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Update module lib/pq to v1.6.0 (#572)

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Update module lib/pq to v1.6.0

Reviewed-on: https://kolaente.dev/vikunja/api/pulls/572
This commit is contained in:
renovate 2020-05-29 17:47:28 +00:00 committed by konrad
parent 5a04f1ecf4
commit 54b18b3c59
161 changed files with 19472 additions and 7 deletions
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2
go.mod
View file

@ -44,7 +44,7 @@ require (
github.com/labstack/echo/v4 v4.1.16
github.com/labstack/gommon v0.3.0
github.com/laurent22/ical-go v0.1.1-0.20181107184520-7e5d6ade8eef
github.com/lib/pq v1.5.2
github.com/lib/pq v1.6.0
github.com/mailru/easyjson v0.7.0 // indirect
github.com/mattn/go-sqlite3 v2.0.3+incompatible
github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect

28
go.sum
View file

@ -47,6 +47,8 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafo
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/alexbrainman/sspi v0.0.0-20180613141037-e580b900e9f5 h1:P5U+E4x5OkVEKQDklVPmzs71WM56RTTRqV4OrDC//Y4=
github.com/alexbrainman/sspi v0.0.0-20180613141037-e580b900e9f5/go.mod h1:976q2ETgjT2snVCf2ZaBnyBbVoPERGjUz+0sofzEfro=
github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
@ -211,6 +213,8 @@ github.com/gordonklaus/ineffassign v0.0.0-20200309095847-7953dde2c7bf h1:vc7Dmrk
github.com/gordonklaus/ineffassign v0.0.0-20200309095847-7953dde2c7bf/go.mod h1:cuNKsD1zp2v6XfE/orVX2QE1LC+i254ceGcVeDT3pTU=
github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
github.com/gorilla/mux v1.6.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
github.com/gorilla/sessions v1.2.0/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
@ -228,6 +232,8 @@ github.com/hashicorp/go-sockaddr v1.0.0/go.mod h1:7Xibr9yA9JjQq1JpNB2Vw7kxv8xerX
github.com/hashicorp/go-syslog v1.0.0/go.mod h1:qPfqrKkXGihmCqbJM2mZgkZGvKG1dFdvsLplgctolz4=
github.com/hashicorp/go-uuid v1.0.0/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
github.com/hashicorp/go-uuid v1.0.1/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
github.com/hashicorp/go-uuid v1.0.2 h1:cfejS+Tpcp13yd5nYHWDI6qVCny6wyX2Mt5SGur2IGE=
github.com/hashicorp/go-uuid v1.0.2/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
github.com/hashicorp/go.net v0.0.1/go.mod h1:hjKkEWcCURg++eb33jQU7oqQcI9XDCnUzHA0oac0k90=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
@ -246,6 +252,18 @@ github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANyt
github.com/jackc/fake v0.0.0-20150926172116-812a484cc733 h1:vr3AYkKovP8uR8AvSGGUK1IDqRa5lAAvEkZG1LKaCRc=
github.com/jackc/fake v0.0.0-20150926172116-812a484cc733/go.mod h1:WrMFNQdiFJ80sQsxDoMokWK1W5TQtxBFNpzWTD84ibQ=
github.com/jackc/pgx v3.6.0+incompatible/go.mod h1:0ZGrqGqkRlliWnWB4zKnWtjbSWbGkVEFm4TeybAXq+I=
github.com/jcmturner/aescts/v2 v2.0.0 h1:9YKLH6ey7H4eDBXW8khjYslgyqG2xZikXP0EQFKrle8=
github.com/jcmturner/aescts/v2 v2.0.0/go.mod h1:AiaICIRyfYg35RUkr8yESTqvSy7csK90qZ5xfvvsoNs=
github.com/jcmturner/dnsutils/v2 v2.0.0 h1:lltnkeZGL0wILNvrNiVCR6Ro5PGU/SeBvVO/8c/iPbo=
github.com/jcmturner/dnsutils/v2 v2.0.0/go.mod h1:b0TnjGOvI/n42bZa+hmXL+kFJZsFT7G4t3HTlQ184QM=
github.com/jcmturner/gofork v1.0.0 h1:J7uCkflzTEhUZ64xqKnkDxq3kzc96ajM1Gli5ktUem8=
github.com/jcmturner/gofork v1.0.0/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
github.com/jcmturner/goidentity/v6 v6.0.1 h1:VKnZd2oEIMorCTsFBnJWbExfNN7yZr3EhJAxwOkZg6o=
github.com/jcmturner/goidentity/v6 v6.0.1/go.mod h1:X1YW3bgtvwAXju7V3LCIMpY0Gbxyjn/mY9zx4tFonSg=
github.com/jcmturner/gokrb5/v8 v8.2.0 h1:lzPl/30ZLkTveYsYZPKMcgXc8MbnE6RsTd4F9KgiLtk=
github.com/jcmturner/gokrb5/v8 v8.2.0/go.mod h1:T1hnNppQsBtxW0tCHMHTkAt8n/sABdzZgZdoFrZaZNM=
github.com/jcmturner/rpc/v2 v2.0.2 h1:gMB4IwRXYsWw4Bc6o/az2HJgFUA1ffSh90i26ZJ6Xl0=
github.com/jcmturner/rpc/v2 v2.0.2/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc=
github.com/jeffbean/tail v1.0.1 h1:mRuCwa9iq5kH1SBFAIWWFsg+NEi5+VVEf2E2ORVkKp8=
github.com/jeffbean/tail v1.0.1/go.mod h1:+MhJ+VPZMpv8Ui6WRzpJFuWFKxBCZgVOo5HAmlw1sFc=
github.com/jgautheron/goconst v0.0.0-20200227150835-cda7ea3bf591 h1:x/BpEhm6aL26o4TLtcU0loJ7B3+69jielrGc70V7Yb4=
@ -296,6 +314,8 @@ github.com/lib/pq v1.3.0 h1:/qkRGz8zljWiDcFvgpwUpwIAPu3r07TDvs3Rws+o/pU=
github.com/lib/pq v1.3.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
github.com/lib/pq v1.5.2 h1:yTSXVswvWUOQ3k1sd7vJfDrbSl8lKuscqFJRqjC0ifw=
github.com/lib/pq v1.5.2/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
github.com/lib/pq v1.6.0 h1:I5DPxhYJChW9KYc66se+oKFFQX6VuQrKiprsX6ivRZc=
github.com/lib/pq v1.6.0/go.mod h1:4vXEAYvW1fRQ2/FhZ78H73A60MHw1geSm145z2mdY1g=
github.com/magiconair/properties v1.8.0 h1:LLgXmsheXeRoUOBOjtwPQCWIYqM/LU1ayDtDePerRcY=
github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
github.com/magiconair/properties v1.8.1 h1:ZC2Vc7/ZFkGmsVC9KvOjumD+G5lXy2RtTKyzRKO2BQ4=
@ -523,7 +543,9 @@ golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8U
golang.org/x/crypto v0.0.0-20190621222207-cc06ce4a13d4 h1:ydJNl0ENAG67pFbB+9tfhiL2pYqLhfoaZFw/cjLhY4A=
golang.org/x/crypto v0.0.0-20190621222207-cc06ce4a13d4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200117160349-530e935923ad/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37 h1:cg5LA/zNPRzIXIWSCxQW10Rvpy94aQh3LT/ShoCpkHw=
golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@ -575,6 +597,7 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwL
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b h1:0mm1VjtFUOIlE1SbDlwjYaDxZVDP2S5ou6y0gSgXHu8=
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e h1:3G+cUijn7XD+S4eJFddp53Pv7+slrESplyjG25HgL+k=
@ -722,6 +745,11 @@ gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df h1:n7WqCuqOuCbNr617RXOY0AW
gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df/go.mod h1:LRQQ+SO6ZHR7tOkpBDuZnXENFzX8qRjMDMyPD6BRkCw=
gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
gopkg.in/jcmturner/aescts.v1 v1.0.1/go.mod h1:nsR8qBOg+OucoIW+WMhB3GspUQXq9XorLnQb9XtvcOo=
gopkg.in/jcmturner/dnsutils.v1 v1.0.1/go.mod h1:m3v+5svpVOhtFAP/wSz+yzh4Mc0Fg7eRhxkJMWSIz9Q=
gopkg.in/jcmturner/goidentity.v3 v3.0.0/go.mod h1:oG2kH0IvSYNIu80dVAyu/yoefjq1mNfM5bm88whjWx4=
gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
gopkg.in/jcmturner/rpc.v1 v1.1.0/go.mod h1:YIdkC4XfD6GXbzje11McwsDuOlZQSb9W4vfLvuNnlv8=
gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=

27
vendor/github.com/alexbrainman/sspi/LICENSE generated vendored Normal file
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@ -0,0 +1,27 @@
Copyright (c) 2012 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

1
vendor/github.com/alexbrainman/sspi/README.md generated vendored Normal file
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@ -0,0 +1 @@
This repository holds Go packages for accessing Security Support Provider Interface on Windows.

57
vendor/github.com/alexbrainman/sspi/buffer.go generated vendored Normal file
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@ -0,0 +1,57 @@
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package sspi
import (
"io"
"unsafe"
)
func (b *SecBuffer) Set(buftype uint32, data []byte) {
b.BufferType = buftype
if len(data) > 0 {
b.Buffer = &data[0]
b.BufferSize = uint32(len(data))
} else {
b.Buffer = nil
b.BufferSize = 0
}
}
func (b *SecBuffer) Free() error {
if b.Buffer == nil {
return nil
}
return FreeContextBuffer((*byte)(unsafe.Pointer(b.Buffer)))
}
func (b *SecBuffer) Bytes() []byte {
if b.Buffer == nil || b.BufferSize <= 0 {
return nil
}
return (*[2 << 20]byte)(unsafe.Pointer(b.Buffer))[:b.BufferSize]
}
func (b *SecBuffer) WriteAll(w io.Writer) (int, error) {
if b.BufferSize == 0 || b.Buffer == nil {
return 0, nil
}
data := b.Bytes()
total := 0
for {
n, err := w.Write(data)
total += n
if err != nil {
return total, err
}
if n >= len(data) {
break
}
data = data[n:]
}
return total, nil
}

7
vendor/github.com/alexbrainman/sspi/mksyscall.go generated vendored Normal file
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@ -0,0 +1,7 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sspi
//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -systemdll=false -output=zsyscall_windows.go syscall.go

462
vendor/github.com/alexbrainman/sspi/negotiate/negotiate.go generated vendored Normal file
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@ -0,0 +1,462 @@
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
// Package negotiate provides access to the Microsoft Negotiate SSP Package.
//
package negotiate
import (
"errors"
"syscall"
"time"
"unsafe"
"github.com/alexbrainman/sspi"
)
// TODO: maybe (if possible) move all winapi related out of sspi and into sspi/internal/winapi
// PackageInfo contains Negotiate SSP package description.
var PackageInfo *sspi.PackageInfo
func init() {
var err error
PackageInfo, err = sspi.QueryPackageInfo(sspi.NEGOSSP_NAME)
if err != nil {
panic("failed to fetch Negotiate package info: " + err.Error())
}
}
func acquireCredentials(principalName string, creduse uint32, ai *sspi.SEC_WINNT_AUTH_IDENTITY) (*sspi.Credentials, error) {
c, err := sspi.AcquireCredentials(principalName, sspi.NEGOSSP_NAME, creduse, (*byte)(unsafe.Pointer(ai)))
if err != nil {
return nil, err
}
return c, nil
}
// AcquireCurrentUserCredentials acquires credentials of currently
// logged on user. These will be used by the client to authenticate
// itself to the server. It will also be used by the server
// to impersonate the user.
func AcquireCurrentUserCredentials() (*sspi.Credentials, error) {
return acquireCredentials("", sspi.SECPKG_CRED_OUTBOUND, nil)
}
// TODO: see if I can share this common ntlm and negotiate code
// AcquireUserCredentials acquires credentials of user described by
// domain, username and password. These will be used by the client to
// authenticate itself to the server. It will also be used by the
// server to impersonate the user.
func AcquireUserCredentials(domain, username, password string) (*sspi.Credentials, error) {
if len(username) == 0 {
return nil, errors.New("username parameter cannot be empty")
}
d, err := syscall.UTF16FromString(domain)
if err != nil {
return nil, err
}
u, err := syscall.UTF16FromString(username)
if err != nil {
return nil, err
}
p, err := syscall.UTF16FromString(password)
if err != nil {
return nil, err
}
ai := sspi.SEC_WINNT_AUTH_IDENTITY{
User: &u[0],
UserLength: uint32(len(u) - 1), // do not count terminating 0
Domain: &d[0],
DomainLength: uint32(len(d) - 1), // do not count terminating 0
Password: &p[0],
PasswordLength: uint32(len(p) - 1), // do not count terminating 0
Flags: sspi.SEC_WINNT_AUTH_IDENTITY_UNICODE,
}
return acquireCredentials("", sspi.SECPKG_CRED_OUTBOUND, &ai)
}
// AcquireServerCredentials acquires server credentials that will
// be used to authenticate clients.
// The principalName parameter is passed to the underlying call to
// the winapi AcquireCredentialsHandle function (and specifies the
// name of the principal whose credentials the underlying handle
// will reference).
// As a special case, using an empty string for the principal name
// will require the credential of the user under whose security context
// the current process is running.
func AcquireServerCredentials(principalName string) (*sspi.Credentials, error) {
return acquireCredentials(principalName, sspi.SECPKG_CRED_INBOUND, nil)
}
func updateContext(c *sspi.Context, dst, src []byte, targetName *uint16) (authCompleted bool, n int, err error) {
var inBuf, outBuf [1]sspi.SecBuffer
inBuf[0].Set(sspi.SECBUFFER_TOKEN, src)
inBufs := &sspi.SecBufferDesc{
Version: sspi.SECBUFFER_VERSION,
BuffersCount: 1,
Buffers: &inBuf[0],
}
outBuf[0].Set(sspi.SECBUFFER_TOKEN, dst)
outBufs := &sspi.SecBufferDesc{
Version: sspi.SECBUFFER_VERSION,
BuffersCount: 1,
Buffers: &outBuf[0],
}
ret := c.Update(targetName, outBufs, inBufs)
switch ret {
case sspi.SEC_E_OK:
// session established -> return success
return true, int(outBuf[0].BufferSize), nil
case sspi.SEC_I_COMPLETE_NEEDED, sspi.SEC_I_COMPLETE_AND_CONTINUE:
ret = sspi.CompleteAuthToken(c.Handle, outBufs)
if ret != sspi.SEC_E_OK {
return false, 0, ret
}
case sspi.SEC_I_CONTINUE_NEEDED:
default:
return false, 0, ret
}
return false, int(outBuf[0].BufferSize), nil
}
func makeSignature(c *sspi.Context, msg []byte, qop, seqno uint32) ([]byte, error) {
_, maxSignature, _, _, err := c.Sizes()
if err != nil {
return nil, err
}
if maxSignature == 0 {
return nil, errors.New("integrity services are not requested or unavailable")
}
var b [2]sspi.SecBuffer
b[0].Set(sspi.SECBUFFER_DATA, msg)
b[1].Set(sspi.SECBUFFER_TOKEN, make([]byte, maxSignature))
ret := sspi.MakeSignature(c.Handle, qop, sspi.NewSecBufferDesc(b[:]), seqno)
if ret != sspi.SEC_E_OK {
return nil, ret
}
return b[1].Bytes(), nil
}
func encryptMessage(c *sspi.Context, msg []byte, qop, seqno uint32) ([]byte, error) {
_ /*maxToken*/, maxSignature, cBlockSize, cSecurityTrailer, err := c.Sizes()
if err != nil {
return nil, err
}
if maxSignature == 0 {
return nil, errors.New("integrity services are not requested or unavailable")
}
var b [3]sspi.SecBuffer
b[0].Set(sspi.SECBUFFER_TOKEN, make([]byte, cSecurityTrailer))
b[1].Set(sspi.SECBUFFER_DATA, msg)
b[2].Set(sspi.SECBUFFER_PADDING, make([]byte, cBlockSize))
ret := sspi.EncryptMessage(c.Handle, qop, sspi.NewSecBufferDesc(b[:]), seqno)
if ret != sspi.SEC_E_OK {
return nil, ret
}
r0, r1, r2 := b[0].Bytes(), b[1].Bytes(), b[2].Bytes()
res := make([]byte, 0, len(r0)+len(r1)+len(r2))
res = append(res, r0...)
res = append(res, r1...)
res = append(res, r2...)
return res, nil
}
func decryptMessage(c *sspi.Context, msg []byte, seqno uint32) (uint32, []byte, error) {
var b [2]sspi.SecBuffer
b[0].Set(sspi.SECBUFFER_STREAM, msg)
b[1].Set(sspi.SECBUFFER_DATA, []byte{})
var qop uint32
ret := sspi.DecryptMessage(c.Handle, sspi.NewSecBufferDesc(b[:]), seqno, &qop)
if ret != sspi.SEC_E_OK {
return qop, nil, ret
}
return qop, b[1].Bytes(), nil
}
func verifySignature(c *sspi.Context, msg, token []byte, seqno uint32) (uint32, error) {
var b [2]sspi.SecBuffer
b[0].Set(sspi.SECBUFFER_DATA, msg)
b[1].Set(sspi.SECBUFFER_TOKEN, token)
var qop uint32
ret := sspi.VerifySignature(c.Handle, sspi.NewSecBufferDesc(b[:]), seqno, &qop)
if ret != sspi.SEC_E_OK {
return 0, ret
}
return qop, nil
}
// ClientContext is used by the client to manage all steps of Negotiate negotiation.
type ClientContext struct {
sctxt *sspi.Context
targetName *uint16
}
// NewClientContext creates a new client context. It uses client
// credentials cred generated by AcquireCurrentUserCredentials or
// AcquireUserCredentials and SPN to start a client Negotiate
// negotiation sequence. targetName is the service principal name
// (SPN) or the security context of the destination server.
// NewClientContext returns a new token to be sent to the server.
func NewClientContext(cred *sspi.Credentials, targetName string) (cc *ClientContext, outputToken []byte, err error) {
return NewClientContextWithFlags(cred, targetName, sspi.ISC_REQ_CONNECTION)
}
// NewClientContextWithFlags creates a new client context. It uses client
// credentials cred generated by AcquireCurrentUserCredentials or
// AcquireUserCredentials and SPN to start a client Negotiate
// negotiation sequence. targetName is the service principal name
// (SPN) or the security context of the destination server.
// The flags parameter is used to indicate requests for the context
// (for example sspi.ISC_REQ_CONFIDENTIALITY|sspi.ISC_REQ_REPLAY_DETECT)
// NewClientContextWithFlags returns a new token to be sent to the server.
func NewClientContextWithFlags(cred *sspi.Credentials, targetName string, flags uint32) (cc *ClientContext, outputToken []byte, err error) {
var tname *uint16
if len(targetName) > 0 {
p, err2 := syscall.UTF16FromString(targetName)
if err2 != nil {
return nil, nil, err2
}
if len(p) > 0 {
tname = &p[0]
}
}
otoken := make([]byte, PackageInfo.MaxToken)
c := sspi.NewClientContext(cred, flags)
authCompleted, n, err2 := updateContext(c, otoken, nil, tname)
if err2 != nil {
return nil, nil, err2
}
if authCompleted {
c.Release()
return nil, nil, errors.New("negotiate authentication should not be completed yet")
}
if n == 0 {
c.Release()
return nil, nil, errors.New("negotiate token should not be empty")
}
otoken = otoken[:n]
return &ClientContext{sctxt: c, targetName: tname}, otoken, nil
}
// Release free up resources associated with client context c.
func (c *ClientContext) Release() error {
if c == nil {
return nil
}
return c.sctxt.Release()
}
// Expiry returns c expiry time.
func (c *ClientContext) Expiry() time.Time {
return c.sctxt.Expiry()
}
// Update advances client part of Negotiate negotiation c. It uses
// token received from the server and returns true if client part
// of authentication is complete. It also returns new token to be
// sent to the server.
func (c *ClientContext) Update(token []byte) (authCompleted bool, outputToken []byte, err error) {
otoken := make([]byte, PackageInfo.MaxToken)
authDone, n, err2 := updateContext(c.sctxt, otoken, token, c.targetName)
if err2 != nil {
return false, nil, err2
}
if n == 0 && !authDone {
return false, nil, errors.New("negotiate token should not be empty")
}
otoken = otoken[:n]
return authDone, otoken, nil
}
// Sizes queries the client context for the sizes used in per-message
// functions. It returns the maximum token size used in authentication
// exchanges, the maximum signature size, the preferred integral size of
// messages, the size of any security trailer, and any error.
func (c *ClientContext) Sizes() (uint32, uint32, uint32, uint32, error) {
return c.sctxt.Sizes()
}
// MakeSignature uses the established client context to create a signature
// for the given message using the provided quality of protection flags and
// sequence number. It returns the signature token in addition to any error.
func (c *ClientContext) MakeSignature(msg []byte, qop, seqno uint32) ([]byte, error) {
return makeSignature(c.sctxt, msg, qop, seqno)
}
// VerifySignature uses the established client context and signature token
// to check that the provided message hasn't been tampered or received out
// of sequence. It returns any quality of protection flags and any error
// that occurred.
func (c *ClientContext) VerifySignature(msg, token []byte, seqno uint32) (uint32, error) {
return verifySignature(c.sctxt, msg, token, seqno)
}
// EncryptMessage uses the established client context to encrypt a message
// using the provided quality of protection flags and sequence number.
// It returns the signature token in addition to any error.
// IMPORTANT: the input msg parameter is updated in place by the low-level windows api
// so must be copied if the initial content should not be modified.
func (c *ClientContext) EncryptMessage(msg []byte, qop, seqno uint32) ([]byte, error) {
return encryptMessage(c.sctxt, msg, qop, seqno)
}
// DecryptMessage uses the established client context to decrypt a message
// using the provided sequence number.
// It returns the quality of protection flag and the decrypted message in addition to any error.
func (c *ClientContext) DecryptMessage(msg []byte, seqno uint32) (uint32, []byte, error) {
return decryptMessage(c.sctxt, msg, seqno)
}
// VerifyFlags determines if all flags used to construct the client context
// were honored (see NewClientContextWithFlags). It should be called after c.Update.
func (c *ClientContext) VerifyFlags() error {
return c.sctxt.VerifyFlags()
}
// VerifySelectiveFlags determines if the given flags were honored (see NewClientContextWithFlags).
// It should be called after c.Update.
func (c *ClientContext) VerifySelectiveFlags(flags uint32) error {
return c.sctxt.VerifySelectiveFlags(flags)
}
// ServerContext is used by the server to manage all steps of Negotiate
// negotiation. Once authentication is completed the context can be
// used to impersonate client.
type ServerContext struct {
sctxt *sspi.Context
}
// NewServerContext creates new server context. It uses server
// credentials created by AcquireServerCredentials and token from
// the client to start server Negotiate negotiation sequence.
// It also returns new token to be sent to the client.
func NewServerContext(cred *sspi.Credentials, token []byte) (sc *ServerContext, authDone bool, outputToken []byte, err error) {
otoken := make([]byte, PackageInfo.MaxToken)
c := sspi.NewServerContext(cred, sspi.ASC_REQ_CONNECTION)
authDone, n, err2 := updateContext(c, otoken, token, nil)
if err2 != nil {
return nil, false, nil, err2
}
otoken = otoken[:n]
return &ServerContext{sctxt: c}, authDone, otoken, nil
}
// Release free up resources associated with server context c.
func (c *ServerContext) Release() error {
if c == nil {
return nil
}
return c.sctxt.Release()
}
// Expiry returns c expiry time.
func (c *ServerContext) Expiry() time.Time {
return c.sctxt.Expiry()
}
// Update advances server part of Negotiate negotiation c. It uses
// token received from the client and returns true if server part
// of authentication is complete. It also returns new token to be
// sent to the client.
func (c *ServerContext) Update(token []byte) (authCompleted bool, outputToken []byte, err error) {
otoken := make([]byte, PackageInfo.MaxToken)
authDone, n, err2 := updateContext(c.sctxt, otoken, token, nil)
if err2 != nil {
return false, nil, err2
}
if n == 0 && !authDone {
return false, nil, errors.New("negotiate token should not be empty")
}
otoken = otoken[:n]
return authDone, otoken, nil
}
const _SECPKG_ATTR_NATIVE_NAMES = 13
type _SecPkgContext_NativeNames struct {
ClientName *uint16
ServerName *uint16
}
// GetUsername returns the username corresponding to the authenticated client
func (c *ServerContext) GetUsername() (string, error) {
var ns _SecPkgContext_NativeNames
ret := sspi.QueryContextAttributes(c.sctxt.Handle, _SECPKG_ATTR_NATIVE_NAMES, (*byte)(unsafe.Pointer(&ns)))
if ret != sspi.SEC_E_OK {
return "", ret
}
sspi.FreeContextBuffer((*byte)(unsafe.Pointer(ns.ServerName)))
defer sspi.FreeContextBuffer((*byte)(unsafe.Pointer(ns.ClientName)))
return syscall.UTF16ToString((*[2 << 20]uint16)(unsafe.Pointer(ns.ClientName))[:]), nil
}
// ImpersonateUser changes current OS thread user. New user is
// the user as specified by client credentials.
func (c *ServerContext) ImpersonateUser() error {
return c.sctxt.ImpersonateUser()
}
// RevertToSelf stops impersonation. It changes current OS thread
// user to what it was before ImpersonateUser was executed.
func (c *ServerContext) RevertToSelf() error {
return c.sctxt.RevertToSelf()
}
// Sizes queries the server context for the sizes used in per-message
// functions. It returns the maximum token size used in authentication
// exchanges, the maximum signature size, the preferred integral size of
// messages, the size of any security trailer, and any error.
func (c *ServerContext) Sizes() (uint32, uint32, uint32, uint32, error) {
return c.sctxt.Sizes()
}
// MakeSignature uses the established server context to create a signature
// for the given message using the provided quality of protection flags and
// sequence number. It returns the signature token in addition to any error.
func (c *ServerContext) MakeSignature(msg []byte, qop, seqno uint32) ([]byte, error) {
return makeSignature(c.sctxt, msg, qop, seqno)
}
// VerifySignature uses the established server context and signature token
// to check that the provided message hasn't been tampered or received out
// of sequence. It returns any quality of protection flags and any error
// that occurred.
func (c *ServerContext) VerifySignature(msg, token []byte, seqno uint32) (uint32, error) {
return verifySignature(c.sctxt, msg, token, seqno)
}
// EncryptMessage uses the established server context to encrypt a message
// using the provided quality of protection flags and sequence number.
// It returns the signature token in addition to any error.
// IMPORTANT: the input msg parameter is updated in place by the low-level windows api
// so must be copied if the initial content should not be modified.
func (c *ServerContext) EncryptMessage(msg []byte, qop, seqno uint32) ([]byte, error) {
return encryptMessage(c.sctxt, msg, qop, seqno)
}
// DecryptMessage uses the established server context to decrypt a message
// using the provided sequence number.
// It returns the quality of protection flag and the decrypted message in addition to any error.
func (c *ServerContext) DecryptMessage(msg []byte, seqno uint32) (uint32, []byte, error) {
return decryptMessage(c.sctxt, msg, seqno)
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package sspi
import (
"fmt"
"syscall"
"time"
"unsafe"
)
// TODO: add documentation
type PackageInfo struct {
Capabilities uint32
Version uint16
RPCID uint16
MaxToken uint32
Name string
Comment string
}
func QueryPackageInfo(pkgname string) (*PackageInfo, error) {
name, err := syscall.UTF16PtrFromString(pkgname)
if err != nil {
return nil, err
}
var pi *SecPkgInfo
ret := QuerySecurityPackageInfo(name, &pi)
if ret != SEC_E_OK {
return nil, ret
}
defer FreeContextBuffer((*byte)(unsafe.Pointer(pi)))
return &PackageInfo{
Capabilities: pi.Capabilities,
Version: pi.Version,
RPCID: pi.RPCID,
MaxToken: pi.MaxToken,
Name: syscall.UTF16ToString((*[2 << 12]uint16)(unsafe.Pointer(pi.Name))[:]),
Comment: syscall.UTF16ToString((*[2 << 12]uint16)(unsafe.Pointer(pi.Comment))[:]),
}, nil
}
type Credentials struct {
Handle CredHandle
expiry syscall.Filetime
}
// AcquireCredentials calls the windows AcquireCredentialsHandle function and
// returns Credentials containing a security handle that can be used for
// InitializeSecurityContext or AcceptSecurityContext operations.
// As a special case, passing an empty string as the principal parameter will
// pass a null string to the underlying function.
func AcquireCredentials(principal string, pkgname string, creduse uint32, authdata *byte) (*Credentials, error) {
var principalName *uint16
if principal != "" {
var err error
principalName, err = syscall.UTF16PtrFromString(principal)
if err != nil {
return nil, err
}
}
name, err := syscall.UTF16PtrFromString(pkgname)
if err != nil {
return nil, err
}
var c Credentials
ret := AcquireCredentialsHandle(principalName, name, creduse, nil, authdata, 0, 0, &c.Handle, &c.expiry)
if ret != SEC_E_OK {
return nil, ret
}
return &c, nil
}
func (c *Credentials) Release() error {
if c == nil {
return nil
}
ret := FreeCredentialsHandle(&c.Handle)
if ret != SEC_E_OK {
return ret
}
return nil
}
func (c *Credentials) Expiry() time.Time {
return time.Unix(0, c.expiry.Nanoseconds())
}
// TODO: add functions to display and manage RequestedFlags and EstablishedFlags fields.
// TODO: maybe get rid of RequestedFlags and EstablishedFlags fields, and replace them with input parameter for New...Context and return value of Update (instead of current bool parameter).
type updateFunc func(c *Context, targname *uint16, h, newh *CtxtHandle, out, in *SecBufferDesc) syscall.Errno
type Context struct {
Cred *Credentials
Handle *CtxtHandle
handle CtxtHandle
updFn updateFunc
expiry syscall.Filetime
RequestedFlags uint32
EstablishedFlags uint32
}
func NewClientContext(cred *Credentials, flags uint32) *Context {
return &Context{
Cred: cred,
updFn: initialize,
RequestedFlags: flags,
}
}
func NewServerContext(cred *Credentials, flags uint32) *Context {
return &Context{
Cred: cred,
updFn: accept,
RequestedFlags: flags,
}
}
func initialize(c *Context, targname *uint16, h, newh *CtxtHandle, out, in *SecBufferDesc) syscall.Errno {
return InitializeSecurityContext(&c.Cred.Handle, h, targname, c.RequestedFlags,
0, SECURITY_NATIVE_DREP, in, 0, newh, out, &c.EstablishedFlags, &c.expiry)
}
func accept(c *Context, targname *uint16, h, newh *CtxtHandle, out, in *SecBufferDesc) syscall.Errno {
return AcceptSecurityContext(&c.Cred.Handle, h, in, c.RequestedFlags,
SECURITY_NATIVE_DREP, newh, out, &c.EstablishedFlags, &c.expiry)
}
func (c *Context) Update(targname *uint16, out, in *SecBufferDesc) syscall.Errno {
h := c.Handle
if c.Handle == nil {
c.Handle = &c.handle
}
return c.updFn(c, targname, h, c.Handle, out, in)
}
func (c *Context) Release() error {
if c == nil {
return nil
}
ret := DeleteSecurityContext(c.Handle)
if ret != SEC_E_OK {
return ret
}
return nil
}
func (c *Context) Expiry() time.Time {
return time.Unix(0, c.expiry.Nanoseconds())
}
// TODO: add comment to function doco that this "impersonation" is applied to current OS thread.
func (c *Context) ImpersonateUser() error {
ret := ImpersonateSecurityContext(c.Handle)
if ret != SEC_E_OK {
return ret
}
return nil
}
func (c *Context) RevertToSelf() error {
ret := RevertSecurityContext(c.Handle)
if ret != SEC_E_OK {
return ret
}
return nil
}
// Sizes queries the context for the sizes used in per-message functions.
// It returns the maximum token size used in authentication exchanges, the
// maximum signature size, the preferred integral size of messages, the
// size of any security trailer, and any error.
func (c *Context) Sizes() (uint32, uint32, uint32, uint32, error) {
var s _SecPkgContext_Sizes
ret := QueryContextAttributes(c.Handle, _SECPKG_ATTR_SIZES, (*byte)(unsafe.Pointer(&s)))
if ret != SEC_E_OK {
return 0, 0, 0, 0, ret
}
return s.MaxToken, s.MaxSignature, s.BlockSize, s.SecurityTrailer, nil
}
// VerifyFlags determines if all flags used to construct the context
// were honored (see NewClientContext). It should be called after c.Update.
func (c *Context) VerifyFlags() error {
return c.VerifySelectiveFlags(c.RequestedFlags)
}
// VerifySelectiveFlags determines if the given flags were honored (see NewClientContext).
// It should be called after c.Update.
func (c *Context) VerifySelectiveFlags(flags uint32) error {
if valid, missing, extra := verifySelectiveFlags(flags, c.RequestedFlags); !valid {
return fmt.Errorf("sspi: invalid flags check: desired=%b requested=%b missing=%b extra=%b", flags, c.RequestedFlags, missing, extra)
}
if valid, missing, extra := verifySelectiveFlags(flags, c.EstablishedFlags); !valid {
return fmt.Errorf("sspi: invalid flags: desired=%b established=%b missing=%b extra=%b", flags, c.EstablishedFlags, missing, extra)
}
return nil
}
// verifySelectiveFlags determines if all bits requested in flags are set in establishedFlags.
// missing represents the bits set in flags that are not set in establishedFlags.
// extra represents the bits set in establishedFlags that are not set in flags.
// valid is true and missing is zero when establishedFlags has all of the requested flags.
func verifySelectiveFlags(flags, establishedFlags uint32) (valid bool, missing, extra uint32) {
missing = flags&establishedFlags ^ flags
extra = flags | establishedFlags ^ flags
valid = missing == 0
return valid, missing, extra
}
// NewSecBufferDesc returns an initialized SecBufferDesc describing the
// provided SecBuffer.
func NewSecBufferDesc(b []SecBuffer) *SecBufferDesc {
return &SecBufferDesc{
Version: SECBUFFER_VERSION,
BuffersCount: uint32(len(b)),
Buffers: &b[0],
}
}

174
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package sspi
import (
"syscall"
)
const (
SEC_E_OK = syscall.Errno(0)
SEC_I_COMPLETE_AND_CONTINUE = syscall.Errno(590612)
SEC_I_COMPLETE_NEEDED = syscall.Errno(590611)
SEC_I_CONTINUE_NEEDED = syscall.Errno(590610)
SEC_E_LOGON_DENIED = syscall.Errno(0x8009030c)
SEC_E_CONTEXT_EXPIRED = syscall.Errno(0x80090317) // not sure if the value is valid
SEC_E_INCOMPLETE_MESSAGE = syscall.Errno(0x80090318)
NTLMSP_NAME = "NTLM"
MICROSOFT_KERBEROS_NAME = "Kerberos"
NEGOSSP_NAME = "Negotiate"
UNISP_NAME = "Microsoft Unified Security Protocol Provider"
_SECPKG_ATTR_SIZES = 0
_SECPKG_ATTR_NAMES = 1
_SECPKG_ATTR_LIFESPAN = 2
_SECPKG_ATTR_DCE_INFO = 3
_SECPKG_ATTR_STREAM_SIZES = 4
_SECPKG_ATTR_KEY_INFO = 5
_SECPKG_ATTR_AUTHORITY = 6
_SECPKG_ATTR_PROTO_INFO = 7
_SECPKG_ATTR_PASSWORD_EXPIRY = 8
_SECPKG_ATTR_SESSION_KEY = 9
_SECPKG_ATTR_PACKAGE_INFO = 10
_SECPKG_ATTR_USER_FLAGS = 11
_SECPKG_ATTR_NEGOTIATION_INFO = 12
_SECPKG_ATTR_NATIVE_NAMES = 13
_SECPKG_ATTR_FLAGS = 14
)
type SecPkgInfo struct {
Capabilities uint32
Version uint16
RPCID uint16
MaxToken uint32
Name *uint16
Comment *uint16
}
type _SecPkgContext_Sizes struct {
MaxToken uint32
MaxSignature uint32
BlockSize uint32
SecurityTrailer uint32
}
//sys QuerySecurityPackageInfo(pkgname *uint16, pkginfo **SecPkgInfo) (ret syscall.Errno) = secur32.QuerySecurityPackageInfoW
//sys FreeContextBuffer(buf *byte) (ret syscall.Errno) = secur32.FreeContextBuffer
const (
SECPKG_CRED_INBOUND = 1
SECPKG_CRED_OUTBOUND = 2
SECPKG_CRED_BOTH = (SECPKG_CRED_OUTBOUND | SECPKG_CRED_INBOUND)
SEC_WINNT_AUTH_IDENTITY_UNICODE = 0x2
)
type SEC_WINNT_AUTH_IDENTITY struct {
User *uint16
UserLength uint32
Domain *uint16
DomainLength uint32
Password *uint16
PasswordLength uint32
Flags uint32
}
type LUID struct {
LowPart uint32
HighPart int32
}
type CredHandle struct {
Lower uintptr
Upper uintptr
}
//sys AcquireCredentialsHandle(principal *uint16, pkgname *uint16, creduse uint32, logonid *LUID, authdata *byte, getkeyfn uintptr, getkeyarg uintptr, handle *CredHandle, expiry *syscall.Filetime) (ret syscall.Errno) = secur32.AcquireCredentialsHandleW
//sys FreeCredentialsHandle(handle *CredHandle) (ret syscall.Errno) = secur32.FreeCredentialsHandle
const (
SECURITY_NATIVE_DREP = 16
SECBUFFER_DATA = 1
SECBUFFER_TOKEN = 2
SECBUFFER_PKG_PARAMS = 3
SECBUFFER_MISSING = 4
SECBUFFER_EXTRA = 5
SECBUFFER_STREAM_TRAILER = 6
SECBUFFER_STREAM_HEADER = 7
SECBUFFER_PADDING = 9
SECBUFFER_STREAM = 10
SECBUFFER_READONLY = 0x80000000
SECBUFFER_ATTRMASK = 0xf0000000
SECBUFFER_VERSION = 0
SECBUFFER_EMPTY = 0
ISC_REQ_DELEGATE = 1
ISC_REQ_MUTUAL_AUTH = 2
ISC_REQ_REPLAY_DETECT = 4
ISC_REQ_SEQUENCE_DETECT = 8
ISC_REQ_CONFIDENTIALITY = 16
ISC_REQ_USE_SESSION_KEY = 32
ISC_REQ_PROMPT_FOR_CREDS = 64
ISC_REQ_USE_SUPPLIED_CREDS = 128
ISC_REQ_ALLOCATE_MEMORY = 256
ISC_REQ_USE_DCE_STYLE = 512
ISC_REQ_DATAGRAM = 1024
ISC_REQ_CONNECTION = 2048
ISC_REQ_EXTENDED_ERROR = 16384
ISC_REQ_STREAM = 32768
ISC_REQ_INTEGRITY = 65536
ISC_REQ_MANUAL_CRED_VALIDATION = 524288
ISC_REQ_HTTP = 268435456
ASC_REQ_DELEGATE = 1
ASC_REQ_MUTUAL_AUTH = 2
ASC_REQ_REPLAY_DETECT = 4
ASC_REQ_SEQUENCE_DETECT = 8
ASC_REQ_CONFIDENTIALITY = 16
ASC_REQ_USE_SESSION_KEY = 32
ASC_REQ_ALLOCATE_MEMORY = 256
ASC_REQ_USE_DCE_STYLE = 512
ASC_REQ_DATAGRAM = 1024
ASC_REQ_CONNECTION = 2048
ASC_REQ_EXTENDED_ERROR = 32768
ASC_REQ_STREAM = 65536
ASC_REQ_INTEGRITY = 131072
)
type CtxtHandle struct {
Lower uintptr
Upper uintptr
}
type SecBuffer struct {
BufferSize uint32
BufferType uint32
Buffer *byte
}
type SecBufferDesc struct {
Version uint32
BuffersCount uint32
Buffers *SecBuffer
}
//sys InitializeSecurityContext(credential *CredHandle, context *CtxtHandle, targname *uint16, contextreq uint32, reserved1 uint32, targdatarep uint32, input *SecBufferDesc, reserved2 uint32, newcontext *CtxtHandle, output *SecBufferDesc, contextattr *uint32, expiry *syscall.Filetime) (ret syscall.Errno) = secur32.InitializeSecurityContextW
//sys AcceptSecurityContext(credential *CredHandle, context *CtxtHandle, input *SecBufferDesc, contextreq uint32, targdatarep uint32, newcontext *CtxtHandle, output *SecBufferDesc, contextattr *uint32, expiry *syscall.Filetime) (ret syscall.Errno) = secur32.AcceptSecurityContext
//sys CompleteAuthToken(context *CtxtHandle, token *SecBufferDesc) (ret syscall.Errno) = secur32.CompleteAuthToken
//sys DeleteSecurityContext(context *CtxtHandle) (ret syscall.Errno) = secur32.DeleteSecurityContext
//sys ImpersonateSecurityContext(context *CtxtHandle) (ret syscall.Errno) = secur32.ImpersonateSecurityContext
//sys RevertSecurityContext(context *CtxtHandle) (ret syscall.Errno) = secur32.RevertSecurityContext
//sys QueryContextAttributes(context *CtxtHandle, attribute uint32, buf *byte) (ret syscall.Errno) = secur32.QueryContextAttributesW
//sys EncryptMessage(context *CtxtHandle, qop uint32, message *SecBufferDesc, messageseqno uint32) (ret syscall.Errno) = secur32.EncryptMessage
//sys DecryptMessage(context *CtxtHandle, message *SecBufferDesc, messageseqno uint32, qop *uint32) (ret syscall.Errno) = secur32.DecryptMessage
//sys ApplyControlToken(context *CtxtHandle, input *SecBufferDesc) (ret syscall.Errno) = secur32.ApplyControlToken
//sys MakeSignature(context *CtxtHandle, qop uint32, message *SecBufferDesc, messageseqno uint32) (ret syscall.Errno) = secur32.MakeSignature
//sys VerifySignature(context *CtxtHandle, message *SecBufferDesc, messageseqno uint32, qop *uint32) (ret syscall.Errno) = secur32.VerifySignature

152
vendor/github.com/alexbrainman/sspi/zsyscall_windows.go generated vendored Normal file
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// MACHINE GENERATED BY 'go generate' COMMAND; DO NOT EDIT
package sspi
import (
"syscall"
"unsafe"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modsecur32 = syscall.NewLazyDLL("secur32.dll")
procQuerySecurityPackageInfoW = modsecur32.NewProc("QuerySecurityPackageInfoW")
procFreeContextBuffer = modsecur32.NewProc("FreeContextBuffer")
procAcquireCredentialsHandleW = modsecur32.NewProc("AcquireCredentialsHandleW")
procFreeCredentialsHandle = modsecur32.NewProc("FreeCredentialsHandle")
procInitializeSecurityContextW = modsecur32.NewProc("InitializeSecurityContextW")
procAcceptSecurityContext = modsecur32.NewProc("AcceptSecurityContext")
procCompleteAuthToken = modsecur32.NewProc("CompleteAuthToken")
procDeleteSecurityContext = modsecur32.NewProc("DeleteSecurityContext")
procImpersonateSecurityContext = modsecur32.NewProc("ImpersonateSecurityContext")
procRevertSecurityContext = modsecur32.NewProc("RevertSecurityContext")
procQueryContextAttributesW = modsecur32.NewProc("QueryContextAttributesW")
procEncryptMessage = modsecur32.NewProc("EncryptMessage")
procDecryptMessage = modsecur32.NewProc("DecryptMessage")
procApplyControlToken = modsecur32.NewProc("ApplyControlToken")
procMakeSignature = modsecur32.NewProc("MakeSignature")
procVerifySignature = modsecur32.NewProc("VerifySignature")
)
func QuerySecurityPackageInfo(pkgname *uint16, pkginfo **SecPkgInfo) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procQuerySecurityPackageInfoW.Addr(), 2, uintptr(unsafe.Pointer(pkgname)), uintptr(unsafe.Pointer(pkginfo)), 0)
ret = syscall.Errno(r0)
return
}
func FreeContextBuffer(buf *byte) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procFreeContextBuffer.Addr(), 1, uintptr(unsafe.Pointer(buf)), 0, 0)
ret = syscall.Errno(r0)
return
}
func AcquireCredentialsHandle(principal *uint16, pkgname *uint16, creduse uint32, logonid *LUID, authdata *byte, getkeyfn uintptr, getkeyarg uintptr, handle *CredHandle, expiry *syscall.Filetime) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall9(procAcquireCredentialsHandleW.Addr(), 9, uintptr(unsafe.Pointer(principal)), uintptr(unsafe.Pointer(pkgname)), uintptr(creduse), uintptr(unsafe.Pointer(logonid)), uintptr(unsafe.Pointer(authdata)), uintptr(getkeyfn), uintptr(getkeyarg), uintptr(unsafe.Pointer(handle)), uintptr(unsafe.Pointer(expiry)))
ret = syscall.Errno(r0)
return
}
func FreeCredentialsHandle(handle *CredHandle) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procFreeCredentialsHandle.Addr(), 1, uintptr(unsafe.Pointer(handle)), 0, 0)
ret = syscall.Errno(r0)
return
}
func InitializeSecurityContext(credential *CredHandle, context *CtxtHandle, targname *uint16, contextreq uint32, reserved1 uint32, targdatarep uint32, input *SecBufferDesc, reserved2 uint32, newcontext *CtxtHandle, output *SecBufferDesc, contextattr *uint32, expiry *syscall.Filetime) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall12(procInitializeSecurityContextW.Addr(), 12, uintptr(unsafe.Pointer(credential)), uintptr(unsafe.Pointer(context)), uintptr(unsafe.Pointer(targname)), uintptr(contextreq), uintptr(reserved1), uintptr(targdatarep), uintptr(unsafe.Pointer(input)), uintptr(reserved2), uintptr(unsafe.Pointer(newcontext)), uintptr(unsafe.Pointer(output)), uintptr(unsafe.Pointer(contextattr)), uintptr(unsafe.Pointer(expiry)))
ret = syscall.Errno(r0)
return
}
func AcceptSecurityContext(credential *CredHandle, context *CtxtHandle, input *SecBufferDesc, contextreq uint32, targdatarep uint32, newcontext *CtxtHandle, output *SecBufferDesc, contextattr *uint32, expiry *syscall.Filetime) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall9(procAcceptSecurityContext.Addr(), 9, uintptr(unsafe.Pointer(credential)), uintptr(unsafe.Pointer(context)), uintptr(unsafe.Pointer(input)), uintptr(contextreq), uintptr(targdatarep), uintptr(unsafe.Pointer(newcontext)), uintptr(unsafe.Pointer(output)), uintptr(unsafe.Pointer(contextattr)), uintptr(unsafe.Pointer(expiry)))
ret = syscall.Errno(r0)
return
}
func CompleteAuthToken(context *CtxtHandle, token *SecBufferDesc) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procCompleteAuthToken.Addr(), 2, uintptr(unsafe.Pointer(context)), uintptr(unsafe.Pointer(token)), 0)
ret = syscall.Errno(r0)
return
}
func DeleteSecurityContext(context *CtxtHandle) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procDeleteSecurityContext.Addr(), 1, uintptr(unsafe.Pointer(context)), 0, 0)
ret = syscall.Errno(r0)
return
}
func ImpersonateSecurityContext(context *CtxtHandle) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procImpersonateSecurityContext.Addr(), 1, uintptr(unsafe.Pointer(context)), 0, 0)
ret = syscall.Errno(r0)
return
}
func RevertSecurityContext(context *CtxtHandle) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procRevertSecurityContext.Addr(), 1, uintptr(unsafe.Pointer(context)), 0, 0)
ret = syscall.Errno(r0)
return
}
func QueryContextAttributes(context *CtxtHandle, attribute uint32, buf *byte) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procQueryContextAttributesW.Addr(), 3, uintptr(unsafe.Pointer(context)), uintptr(attribute), uintptr(unsafe.Pointer(buf)))
ret = syscall.Errno(r0)
return
}
func EncryptMessage(context *CtxtHandle, qop uint32, message *SecBufferDesc, messageseqno uint32) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall6(procEncryptMessage.Addr(), 4, uintptr(unsafe.Pointer(context)), uintptr(qop), uintptr(unsafe.Pointer(message)), uintptr(messageseqno), 0, 0)
ret = syscall.Errno(r0)
return
}
func DecryptMessage(context *CtxtHandle, message *SecBufferDesc, messageseqno uint32, qop *uint32) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall6(procDecryptMessage.Addr(), 4, uintptr(unsafe.Pointer(context)), uintptr(unsafe.Pointer(message)), uintptr(messageseqno), uintptr(unsafe.Pointer(qop)), 0, 0)
ret = syscall.Errno(r0)
return
}
func ApplyControlToken(context *CtxtHandle, input *SecBufferDesc) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall(procApplyControlToken.Addr(), 2, uintptr(unsafe.Pointer(context)), uintptr(unsafe.Pointer(input)), 0)
ret = syscall.Errno(r0)
return
}
func MakeSignature(context *CtxtHandle, qop uint32, message *SecBufferDesc, messageseqno uint32) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall6(procMakeSignature.Addr(), 4, uintptr(unsafe.Pointer(context)), uintptr(qop), uintptr(unsafe.Pointer(message)), uintptr(messageseqno), 0, 0)
ret = syscall.Errno(r0)
return
}
func VerifySignature(context *CtxtHandle, message *SecBufferDesc, messageseqno uint32, qop *uint32) (ret syscall.Errno) {
r0, _, _ := syscall.Syscall6(procVerifySignature.Addr(), 4, uintptr(unsafe.Pointer(context)), uintptr(unsafe.Pointer(message)), uintptr(messageseqno), uintptr(unsafe.Pointer(qop)), 0, 0)
ret = syscall.Errno(r0)
return
}

12
vendor/github.com/hashicorp/go-uuid/.travis.yml generated vendored Normal file
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@ -0,0 +1,12 @@
language: go
sudo: false
go:
- 1.4
- 1.5
- 1.6
- tip
script:
- go test -bench . -benchmem -v ./...

363
vendor/github.com/hashicorp/go-uuid/LICENSE generated vendored Normal file
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Mozilla Public License, version 2.0
1. Definitions
1.1. "Contributor"
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. "Incompatible With Secondary Licenses"
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the terms of
a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in a
separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible, whether
at the time of the initial grant or subsequently, any and all of the
rights conveyed by this License.
1.10. "Modifications"
means any of the following:
a. any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the License,
by the making, using, selling, offering for sale, having made, import,
or transfer of either its Contributions or its Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, "control" means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights to
grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter the
recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty, or
limitations of liability) contained within the Source Code Form of the
Covered Software, except that You may alter any license notices to the
extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute,
judicial order, or regulation then You must: (a) comply with the terms of
this License to the maximum extent possible; and (b) describe the
limitations and the code they affect. Such description must be placed in a
text file included with all distributions of the Covered Software under
this License. Except to the extent prohibited by statute or regulation,
such description must be sufficiently detailed for a recipient of ordinary
skill to be able to understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing
basis, if such Contributor fails to notify You of the non-compliance by
some reasonable means prior to 60 days after You have come back into
compliance. Moreover, Your grants from a particular Contributor are
reinstated on an ongoing basis if such Contributor notifies You of the
non-compliance by some reasonable means, this is the first time You have
received notice of non-compliance with this License from such
Contributor, and You become compliant prior to 30 days after Your receipt
of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an "as is" basis,
without warranty of any kind, either expressed, implied, or statutory,
including, without limitation, warranties that the Covered Software is free
of defects, merchantable, fit for a particular purpose or non-infringing.
The entire risk as to the quality and performance of the Covered Software
is with You. Should any Covered Software prove defective in any respect,
You (not any Contributor) assume the cost of any necessary servicing,
repair, or correction. This disclaimer of warranty constitutes an essential
part of this License. No use of any Covered Software is authorized under
this License except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from
such party's negligence to the extent applicable law prohibits such
limitation. Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages, so this exclusion and limitation may
not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts
of a jurisdiction where the defendant maintains its principal place of
business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions. Nothing
in this Section shall prevent a party's ability to bring cross-claims or
counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
be used to construe this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses If You choose to distribute Source Code Form that is
Incompatible With Secondary Licenses under the terms of this version of
the License, the notice described in Exhibit B of this License must be
attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file,
then You may include the notice in a location (such as a LICENSE file in a
relevant directory) where a recipient would be likely to look for such a
notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
This Source Code Form is "Incompatible
With Secondary Licenses", as defined by
the Mozilla Public License, v. 2.0.

8
vendor/github.com/hashicorp/go-uuid/README.md generated vendored Normal file
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# uuid [![Build Status](https://travis-ci.org/hashicorp/go-uuid.svg?branch=master)](https://travis-ci.org/hashicorp/go-uuid)
Generates UUID-format strings using high quality, _purely random_ bytes. It is **not** intended to be RFC compliant, merely to use a well-understood string representation of a 128-bit value. It can also parse UUID-format strings into their component bytes.
Documentation
=============
The full documentation is available on [Godoc](http://godoc.org/github.com/hashicorp/go-uuid).

1
vendor/github.com/hashicorp/go-uuid/go.mod generated vendored Normal file
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module github.com/hashicorp/go-uuid

83
vendor/github.com/hashicorp/go-uuid/uuid.go generated vendored Normal file
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package uuid
import (
"crypto/rand"
"encoding/hex"
"fmt"
"io"
)
// GenerateRandomBytes is used to generate random bytes of given size.
func GenerateRandomBytes(size int) ([]byte, error) {
return GenerateRandomBytesWithReader(size, rand.Reader)
}
// GenerateRandomBytesWithReader is used to generate random bytes of given size read from a given reader.
func GenerateRandomBytesWithReader(size int, reader io.Reader) ([]byte, error) {
if reader == nil {
return nil, fmt.Errorf("provided reader is nil")
}
buf := make([]byte, size)
if _, err := io.ReadFull(reader, buf); err != nil {
return nil, fmt.Errorf("failed to read random bytes: %v", err)
}
return buf, nil
}
const uuidLen = 16
// GenerateUUID is used to generate a random UUID
func GenerateUUID() (string, error) {
return GenerateUUIDWithReader(rand.Reader)
}
// GenerateUUIDWithReader is used to generate a random UUID with a given Reader
func GenerateUUIDWithReader(reader io.Reader) (string, error) {
if reader == nil {
return "", fmt.Errorf("provided reader is nil")
}
buf, err := GenerateRandomBytesWithReader(uuidLen, reader)
if err != nil {
return "", err
}
return FormatUUID(buf)
}
func FormatUUID(buf []byte) (string, error) {
if buflen := len(buf); buflen != uuidLen {
return "", fmt.Errorf("wrong length byte slice (%d)", buflen)
}
return fmt.Sprintf("%x-%x-%x-%x-%x",
buf[0:4],
buf[4:6],
buf[6:8],
buf[8:10],
buf[10:16]), nil
}
func ParseUUID(uuid string) ([]byte, error) {
if len(uuid) != 2 * uuidLen + 4 {
return nil, fmt.Errorf("uuid string is wrong length")
}
if uuid[8] != '-' ||
uuid[13] != '-' ||
uuid[18] != '-' ||
uuid[23] != '-' {
return nil, fmt.Errorf("uuid is improperly formatted")
}
hexStr := uuid[0:8] + uuid[9:13] + uuid[14:18] + uuid[19:23] + uuid[24:36]
ret, err := hex.DecodeString(hexStr)
if err != nil {
return nil, err
}
if len(ret) != uuidLen {
return nil, fmt.Errorf("decoded hex is the wrong length")
}
return ret, nil
}

201
vendor/github.com/jcmturner/aescts/v2/LICENSE generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright {yyyy} {name of copyright owner}
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

186
vendor/github.com/jcmturner/aescts/v2/aescts.go generated vendored Normal file
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@ -0,0 +1,186 @@
// Package aescts provides AES CBC CipherText Stealing encryption and decryption methods
package aescts
import (
"crypto/aes"
"crypto/cipher"
"errors"
"fmt"
)
// Encrypt the message with the key and the initial vector.
// Returns: next iv, ciphertext bytes, error
func Encrypt(key, iv, plaintext []byte) ([]byte, []byte, error) {
l := len(plaintext)
block, err := aes.NewCipher(key)
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("error creating cipher: %v", err)
}
mode := cipher.NewCBCEncrypter(block, iv)
m := make([]byte, len(plaintext))
copy(m, plaintext)
/*For consistency, ciphertext stealing is always used for the last two
blocks of the data to be encrypted, as in [RC5]. If the data length
is a multiple of the block size, this is equivalent to plain CBC mode
with the last two ciphertext blocks swapped.*/
/*The initial vector carried out from one encryption for use in a
subsequent encryption is the next-to-last block of the encryption
output; this is the encrypted form of the last plaintext block.*/
if l <= aes.BlockSize {
m, _ = zeroPad(m, aes.BlockSize)
mode.CryptBlocks(m, m)
return m, m, nil
}
if l%aes.BlockSize == 0 {
mode.CryptBlocks(m, m)
iv = m[len(m)-aes.BlockSize:]
rb, _ := swapLastTwoBlocks(m, aes.BlockSize)
return iv, rb, nil
}
m, _ = zeroPad(m, aes.BlockSize)
rb, pb, lb, err := tailBlocks(m, aes.BlockSize)
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("error tailing blocks: %v", err)
}
var ct []byte
if rb != nil {
// Encrpt all but the lats 2 blocks and update the rolling iv
mode.CryptBlocks(rb, rb)
iv = rb[len(rb)-aes.BlockSize:]
mode = cipher.NewCBCEncrypter(block, iv)
ct = append(ct, rb...)
}
mode.CryptBlocks(pb, pb)
mode = cipher.NewCBCEncrypter(block, pb)
mode.CryptBlocks(lb, lb)
// Cipher Text Stealing (CTS) - Ref: https://en.wikipedia.org/wiki/Ciphertext_stealing#CBC_ciphertext_stealing
// Swap the last two cipher blocks
// Truncate the ciphertext to the length of the original plaintext
ct = append(ct, lb...)
ct = append(ct, pb...)
return lb, ct[:l], nil
}
// Decrypt the ciphertext with the key and the initial vector.
func Decrypt(key, iv, ciphertext []byte) ([]byte, error) {
// Copy the cipher text as golang slices even when passed by value to this method can result in the backing arrays of the calling code value being updated.
ct := make([]byte, len(ciphertext))
copy(ct, ciphertext)
if len(ct) < aes.BlockSize {
return []byte{}, fmt.Errorf("ciphertext is not large enough. It is less that one block size. Blocksize:%v; Ciphertext:%v", aes.BlockSize, len(ct))
}
// Configure the CBC
block, err := aes.NewCipher(key)
if err != nil {
return nil, fmt.Errorf("error creating cipher: %v", err)
}
var mode cipher.BlockMode
//If ciphertext is multiple of blocksize we just need to swap back the last two blocks and then do CBC
//If the ciphertext is just one block we can't swap so we just decrypt
if len(ct)%aes.BlockSize == 0 {
if len(ct) > aes.BlockSize {
ct, _ = swapLastTwoBlocks(ct, aes.BlockSize)
}
mode = cipher.NewCBCDecrypter(block, iv)
message := make([]byte, len(ct))
mode.CryptBlocks(message, ct)
return message[:len(ct)], nil
}
// Cipher Text Stealing (CTS) using CBC interface. Ref: https://en.wikipedia.org/wiki/Ciphertext_stealing#CBC_ciphertext_stealing
// Get ciphertext of the 2nd to last (penultimate) block (cpb), the last block (clb) and the rest (crb)
crb, cpb, clb, _ := tailBlocks(ct, aes.BlockSize)
v := make([]byte, len(iv), len(iv))
copy(v, iv)
var message []byte
if crb != nil {
//If there is more than just the last and the penultimate block we decrypt it and the last bloc of this becomes the iv for later
rb := make([]byte, len(crb))
mode = cipher.NewCBCDecrypter(block, v)
v = crb[len(crb)-aes.BlockSize:]
mode.CryptBlocks(rb, crb)
message = append(message, rb...)
}
// We need to modify the cipher text
// Decryt the 2nd to last (penultimate) block with a the original iv
pb := make([]byte, aes.BlockSize)
mode = cipher.NewCBCDecrypter(block, iv)
mode.CryptBlocks(pb, cpb)
// number of byte needed to pad
npb := aes.BlockSize - len(ct)%aes.BlockSize
//pad last block using the number of bytes needed from the tail of the plaintext 2nd to last (penultimate) block
clb = append(clb, pb[len(pb)-npb:]...)
// Now decrypt the last block in the penultimate position (iv will be from the crb, if the is no crb it's zeros)
// iv for the penultimate block decrypted in the last position becomes the modified last block
lb := make([]byte, aes.BlockSize)
mode = cipher.NewCBCDecrypter(block, v)
v = clb
mode.CryptBlocks(lb, clb)
message = append(message, lb...)
// Now decrypt the penultimate block in the last position (iv will be from the modified last block)
mode = cipher.NewCBCDecrypter(block, v)
mode.CryptBlocks(cpb, cpb)
message = append(message, cpb...)
// Truncate to the size of the original cipher text
return message[:len(ct)], nil
}
func tailBlocks(b []byte, c int) ([]byte, []byte, []byte, error) {
if len(b) <= c {
return []byte{}, []byte{}, []byte{}, errors.New("bytes slice is not larger than one block so cannot tail")
}
// Get size of last block
var lbs int
if l := len(b) % aes.BlockSize; l == 0 {
lbs = aes.BlockSize
} else {
lbs = l
}
// Get last block
lb := b[len(b)-lbs:]
// Get 2nd to last (penultimate) block
pb := b[len(b)-lbs-c : len(b)-lbs]
if len(b) > 2*c {
rb := b[:len(b)-lbs-c]
return rb, pb, lb, nil
}
return nil, pb, lb, nil
}
func swapLastTwoBlocks(b []byte, c int) ([]byte, error) {
rb, pb, lb, err := tailBlocks(b, c)
if err != nil {
return nil, err
}
var out []byte
if rb != nil {
out = append(out, rb...)
}
out = append(out, lb...)
out = append(out, pb...)
return out, nil
}
// zeroPad pads bytes with zeros to nearest multiple of message size m.
func zeroPad(b []byte, m int) ([]byte, error) {
if m <= 0 {
return nil, errors.New("invalid message block size when padding")
}
if b == nil || len(b) == 0 {
return nil, errors.New("data not valid to pad: Zero size")
}
if l := len(b) % m; l != 0 {
n := m - l
z := make([]byte, n)
b = append(b, z...)
}
return b, nil
}

5
vendor/github.com/jcmturner/aescts/v2/go.mod generated vendored Normal file
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@ -0,0 +1,5 @@
module github.com/jcmturner/aescts/v2
go 1.13
require github.com/stretchr/testify v1.4.0

10
vendor/github.com/jcmturner/aescts/v2/go.sum generated vendored Normal file
View file

@ -0,0 +1,10 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

201
vendor/github.com/jcmturner/dnsutils/v2/LICENSE generated vendored Normal file
View file

@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

5
vendor/github.com/jcmturner/dnsutils/v2/go.mod generated vendored Normal file
View file

@ -0,0 +1,5 @@
module github.com/jcmturner/dnsutils/v2
go 1.13
require github.com/stretchr/testify v1.4.0

10
vendor/github.com/jcmturner/dnsutils/v2/go.sum generated vendored Normal file
View file

@ -0,0 +1,10 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

95
vendor/github.com/jcmturner/dnsutils/v2/srv.go generated vendored Normal file
View file

@ -0,0 +1,95 @@
package dnsutils
import (
"math/rand"
"net"
"sort"
)
// OrderedSRV returns a count of the results and a map keyed on the order they should be used.
// This based on the records' priority and randomised selection based on their relative weighting.
// The function's inputs are the same as those for net.LookupSRV
// To use in the correct order:
//
// count, orderedSRV, err := OrderedSRV(service, proto, name)
// i := 1
// for i <= count {
// srv := orderedSRV[i]
// // Do something such as dial this SRV. If fails move on the the next or break if it succeeds.
// i += 1
// }
func OrderedSRV(service, proto, name string) (int, map[int]*net.SRV, error) {
_, addrs, err := net.LookupSRV(service, proto, name)
if err != nil {
return 0, make(map[int]*net.SRV), err
}
index, osrv := orderSRV(addrs)
return index, osrv, nil
}
func orderSRV(addrs []*net.SRV) (int, map[int]*net.SRV) {
// Initialise the ordered map
var o int
osrv := make(map[int]*net.SRV)
prioMap := make(map[int][]*net.SRV, 0)
for _, srv := range addrs {
prioMap[int(srv.Priority)] = append(prioMap[int(srv.Priority)], srv)
}
priorities := make([]int, 0)
for p := range prioMap {
priorities = append(priorities, p)
}
var count int
sort.Ints(priorities)
for _, p := range priorities {
tos := weightedOrder(prioMap[p])
for i, s := range tos {
count += 1
osrv[o+i] = s
}
o += len(tos)
}
return count, osrv
}
func weightedOrder(srvs []*net.SRV) map[int]*net.SRV {
// Get the total weight
var tw int
for _, s := range srvs {
tw += int(s.Weight)
}
// Initialise the ordered map
o := 1
osrv := make(map[int]*net.SRV)
// Whilst there are still entries to be ordered
l := len(srvs)
for l > 0 {
i := rand.Intn(l)
s := srvs[i]
var rw int
if tw > 0 {
// Greater the weight the more likely this will be zero or less
rw = rand.Intn(tw) - int(s.Weight)
}
if rw <= 0 {
// Put entry in position
osrv[o] = s
if len(srvs) > 1 {
// Remove the entry from the source slice by swapping with the last entry and truncating
srvs[len(srvs)-1], srvs[i] = srvs[i], srvs[len(srvs)-1]
srvs = srvs[:len(srvs)-1]
l = len(srvs)
} else {
l = 0
}
o += 1
tw = tw - int(s.Weight)
}
}
return osrv
}

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Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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This is a temporary repository that will be removed when the issues below are fixed in the core golang code.
## Issues
* [encoding/asn1: cannot marshal into a GeneralString](https://github.com/golang/go/issues/18832)
* [encoding/asn1: cannot marshal into slice of strings and pass stringtype parameter tags to members](https://github.com/golang/go/issues/18834)

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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package asn1
import (
"reflect"
"strconv"
"strings"
)
// ASN.1 objects have metadata preceding them:
// the tag: the type of the object
// a flag denoting if this object is compound or not
// the class type: the namespace of the tag
// the length of the object, in bytes
// Here are some standard tags and classes
// ASN.1 tags represent the type of the following object.
const (
TagBoolean = 1
TagInteger = 2
TagBitString = 3
TagOctetString = 4
TagOID = 6
TagEnum = 10
TagUTF8String = 12
TagSequence = 16
TagSet = 17
TagPrintableString = 19
TagT61String = 20
TagIA5String = 22
TagUTCTime = 23
TagGeneralizedTime = 24
TagGeneralString = 27
)
// ASN.1 class types represent the namespace of the tag.
const (
ClassUniversal = 0
ClassApplication = 1
ClassContextSpecific = 2
ClassPrivate = 3
)
type tagAndLength struct {
class, tag, length int
isCompound bool
}
// ASN.1 has IMPLICIT and EXPLICIT tags, which can be translated as "instead
// of" and "in addition to". When not specified, every primitive type has a
// default tag in the UNIVERSAL class.
//
// For example: a BIT STRING is tagged [UNIVERSAL 3] by default (although ASN.1
// doesn't actually have a UNIVERSAL keyword). However, by saying [IMPLICIT
// CONTEXT-SPECIFIC 42], that means that the tag is replaced by another.
//
// On the other hand, if it said [EXPLICIT CONTEXT-SPECIFIC 10], then an
// /additional/ tag would wrap the default tag. This explicit tag will have the
// compound flag set.
//
// (This is used in order to remove ambiguity with optional elements.)
//
// You can layer EXPLICIT and IMPLICIT tags to an arbitrary depth, however we
// don't support that here. We support a single layer of EXPLICIT or IMPLICIT
// tagging with tag strings on the fields of a structure.
// fieldParameters is the parsed representation of tag string from a structure field.
type fieldParameters struct {
optional bool // true iff the field is OPTIONAL
explicit bool // true iff an EXPLICIT tag is in use.
application bool // true iff an APPLICATION tag is in use.
defaultValue *int64 // a default value for INTEGER typed fields (maybe nil).
tag *int // the EXPLICIT or IMPLICIT tag (maybe nil).
stringType int // the string tag to use when marshaling.
timeType int // the time tag to use when marshaling.
set bool // true iff this should be encoded as a SET
omitEmpty bool // true iff this should be omitted if empty when marshaling.
// Invariants:
// if explicit is set, tag is non-nil.
}
// Given a tag string with the format specified in the package comment,
// parseFieldParameters will parse it into a fieldParameters structure,
// ignoring unknown parts of the string.
func parseFieldParameters(str string) (ret fieldParameters) {
for _, part := range strings.Split(str, ",") {
switch {
case part == "optional":
ret.optional = true
case part == "explicit":
ret.explicit = true
if ret.tag == nil {
ret.tag = new(int)
}
case part == "generalized":
ret.timeType = TagGeneralizedTime
case part == "utc":
ret.timeType = TagUTCTime
case part == "ia5":
ret.stringType = TagIA5String
// jtasn1 case below added
case part == "generalstring":
ret.stringType = TagGeneralString
case part == "printable":
ret.stringType = TagPrintableString
case part == "utf8":
ret.stringType = TagUTF8String
case strings.HasPrefix(part, "default:"):
i, err := strconv.ParseInt(part[8:], 10, 64)
if err == nil {
ret.defaultValue = new(int64)
*ret.defaultValue = i
}
case strings.HasPrefix(part, "tag:"):
i, err := strconv.Atoi(part[4:])
if err == nil {
ret.tag = new(int)
*ret.tag = i
}
case part == "set":
ret.set = true
case part == "application":
ret.application = true
if ret.tag == nil {
ret.tag = new(int)
}
case part == "omitempty":
ret.omitEmpty = true
}
}
return
}
// Given a reflected Go type, getUniversalType returns the default tag number
// and expected compound flag.
func getUniversalType(t reflect.Type) (tagNumber int, isCompound, ok bool) {
switch t {
case objectIdentifierType:
return TagOID, false, true
case bitStringType:
return TagBitString, false, true
case timeType:
return TagUTCTime, false, true
case enumeratedType:
return TagEnum, false, true
case bigIntType:
return TagInteger, false, true
}
switch t.Kind() {
case reflect.Bool:
return TagBoolean, false, true
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return TagInteger, false, true
case reflect.Struct:
return TagSequence, true, true
case reflect.Slice:
if t.Elem().Kind() == reflect.Uint8 {
return TagOctetString, false, true
}
if strings.HasSuffix(t.Name(), "SET") {
return TagSet, true, true
}
return TagSequence, true, true
case reflect.String:
return TagPrintableString, false, true
}
return 0, false, false
}

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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package asn1
import (
"bytes"
"errors"
"fmt"
"io"
"math/big"
"reflect"
"time"
"unicode/utf8"
)
// A forkableWriter is an in-memory buffer that can be
// 'forked' to create new forkableWriters that bracket the
// original. After
// pre, post := w.fork()
// the overall sequence of bytes represented is logically w+pre+post.
type forkableWriter struct {
*bytes.Buffer
pre, post *forkableWriter
}
func newForkableWriter() *forkableWriter {
return &forkableWriter{new(bytes.Buffer), nil, nil}
}
func (f *forkableWriter) fork() (pre, post *forkableWriter) {
if f.pre != nil || f.post != nil {
panic("have already forked")
}
f.pre = newForkableWriter()
f.post = newForkableWriter()
return f.pre, f.post
}
func (f *forkableWriter) Len() (l int) {
l += f.Buffer.Len()
if f.pre != nil {
l += f.pre.Len()
}
if f.post != nil {
l += f.post.Len()
}
return
}
func (f *forkableWriter) writeTo(out io.Writer) (n int, err error) {
n, err = out.Write(f.Bytes())
if err != nil {
return
}
var nn int
if f.pre != nil {
nn, err = f.pre.writeTo(out)
n += nn
if err != nil {
return
}
}
if f.post != nil {
nn, err = f.post.writeTo(out)
n += nn
}
return
}
func marshalBase128Int(out *forkableWriter, n int64) (err error) {
if n == 0 {
err = out.WriteByte(0)
return
}
l := 0
for i := n; i > 0; i >>= 7 {
l++
}
for i := l - 1; i >= 0; i-- {
o := byte(n >> uint(i*7))
o &= 0x7f
if i != 0 {
o |= 0x80
}
err = out.WriteByte(o)
if err != nil {
return
}
}
return nil
}
func marshalInt64(out *forkableWriter, i int64) (err error) {
n := int64Length(i)
for ; n > 0; n-- {
err = out.WriteByte(byte(i >> uint((n-1)*8)))
if err != nil {
return
}
}
return nil
}
func int64Length(i int64) (numBytes int) {
numBytes = 1
for i > 127 {
numBytes++
i >>= 8
}
for i < -128 {
numBytes++
i >>= 8
}
return
}
func marshalBigInt(out *forkableWriter, n *big.Int) (err error) {
if n.Sign() < 0 {
// A negative number has to be converted to two's-complement
// form. So we'll subtract 1 and invert. If the
// most-significant-bit isn't set then we'll need to pad the
// beginning with 0xff in order to keep the number negative.
nMinus1 := new(big.Int).Neg(n)
nMinus1.Sub(nMinus1, bigOne)
bytes := nMinus1.Bytes()
for i := range bytes {
bytes[i] ^= 0xff
}
if len(bytes) == 0 || bytes[0]&0x80 == 0 {
err = out.WriteByte(0xff)
if err != nil {
return
}
}
_, err = out.Write(bytes)
} else if n.Sign() == 0 {
// Zero is written as a single 0 zero rather than no bytes.
err = out.WriteByte(0x00)
} else {
bytes := n.Bytes()
if len(bytes) > 0 && bytes[0]&0x80 != 0 {
// We'll have to pad this with 0x00 in order to stop it
// looking like a negative number.
err = out.WriteByte(0)
if err != nil {
return
}
}
_, err = out.Write(bytes)
}
return
}
func marshalLength(out *forkableWriter, i int) (err error) {
n := lengthLength(i)
for ; n > 0; n-- {
err = out.WriteByte(byte(i >> uint((n-1)*8)))
if err != nil {
return
}
}
return nil
}
func lengthLength(i int) (numBytes int) {
numBytes = 1
for i > 255 {
numBytes++
i >>= 8
}
return
}
func marshalTagAndLength(out *forkableWriter, t tagAndLength) (err error) {
b := uint8(t.class) << 6
if t.isCompound {
b |= 0x20
}
if t.tag >= 31 {
b |= 0x1f
err = out.WriteByte(b)
if err != nil {
return
}
err = marshalBase128Int(out, int64(t.tag))
if err != nil {
return
}
} else {
b |= uint8(t.tag)
err = out.WriteByte(b)
if err != nil {
return
}
}
if t.length >= 128 {
l := lengthLength(t.length)
err = out.WriteByte(0x80 | byte(l))
if err != nil {
return
}
err = marshalLength(out, t.length)
if err != nil {
return
}
} else {
err = out.WriteByte(byte(t.length))
if err != nil {
return
}
}
return nil
}
func marshalBitString(out *forkableWriter, b BitString) (err error) {
paddingBits := byte((8 - b.BitLength%8) % 8)
err = out.WriteByte(paddingBits)
if err != nil {
return
}
_, err = out.Write(b.Bytes)
return
}
func marshalObjectIdentifier(out *forkableWriter, oid []int) (err error) {
if len(oid) < 2 || oid[0] > 2 || (oid[0] < 2 && oid[1] >= 40) {
return StructuralError{"invalid object identifier"}
}
err = marshalBase128Int(out, int64(oid[0]*40+oid[1]))
if err != nil {
return
}
for i := 2; i < len(oid); i++ {
err = marshalBase128Int(out, int64(oid[i]))
if err != nil {
return
}
}
return
}
func marshalPrintableString(out *forkableWriter, s string) (err error) {
b := []byte(s)
for _, c := range b {
if !isPrintable(c) {
return StructuralError{"PrintableString contains invalid character"}
}
}
_, err = out.Write(b)
return
}
func marshalIA5String(out *forkableWriter, s string) (err error) {
b := []byte(s)
for _, c := range b {
if c > 127 {
return StructuralError{"IA5String contains invalid character"}
}
}
_, err = out.Write(b)
return
}
func marshalUTF8String(out *forkableWriter, s string) (err error) {
_, err = out.Write([]byte(s))
return
}
func marshalTwoDigits(out *forkableWriter, v int) (err error) {
err = out.WriteByte(byte('0' + (v/10)%10))
if err != nil {
return
}
return out.WriteByte(byte('0' + v%10))
}
func marshalFourDigits(out *forkableWriter, v int) (err error) {
var bytes [4]byte
for i := range bytes {
bytes[3-i] = '0' + byte(v%10)
v /= 10
}
_, err = out.Write(bytes[:])
return
}
func outsideUTCRange(t time.Time) bool {
year := t.Year()
return year < 1950 || year >= 2050
}
func marshalUTCTime(out *forkableWriter, t time.Time) (err error) {
year := t.Year()
switch {
case 1950 <= year && year < 2000:
err = marshalTwoDigits(out, year-1900)
case 2000 <= year && year < 2050:
err = marshalTwoDigits(out, year-2000)
default:
return StructuralError{"cannot represent time as UTCTime"}
}
if err != nil {
return
}
return marshalTimeCommon(out, t)
}
func marshalGeneralizedTime(out *forkableWriter, t time.Time) (err error) {
year := t.Year()
if year < 0 || year > 9999 {
return StructuralError{"cannot represent time as GeneralizedTime"}
}
if err = marshalFourDigits(out, year); err != nil {
return
}
return marshalTimeCommon(out, t)
}
func marshalTimeCommon(out *forkableWriter, t time.Time) (err error) {
_, month, day := t.Date()
err = marshalTwoDigits(out, int(month))
if err != nil {
return
}
err = marshalTwoDigits(out, day)
if err != nil {
return
}
hour, min, sec := t.Clock()
err = marshalTwoDigits(out, hour)
if err != nil {
return
}
err = marshalTwoDigits(out, min)
if err != nil {
return
}
err = marshalTwoDigits(out, sec)
if err != nil {
return
}
_, offset := t.Zone()
switch {
case offset/60 == 0:
err = out.WriteByte('Z')
return
case offset > 0:
err = out.WriteByte('+')
case offset < 0:
err = out.WriteByte('-')
}
if err != nil {
return
}
offsetMinutes := offset / 60
if offsetMinutes < 0 {
offsetMinutes = -offsetMinutes
}
err = marshalTwoDigits(out, offsetMinutes/60)
if err != nil {
return
}
err = marshalTwoDigits(out, offsetMinutes%60)
return
}
func stripTagAndLength(in []byte) []byte {
_, offset, err := parseTagAndLength(in, 0)
if err != nil {
return in
}
return in[offset:]
}
func marshalBody(out *forkableWriter, value reflect.Value, params fieldParameters) (err error) {
switch value.Type() {
case flagType:
return nil
case timeType:
t := value.Interface().(time.Time)
if params.timeType == TagGeneralizedTime || outsideUTCRange(t) {
return marshalGeneralizedTime(out, t)
} else {
return marshalUTCTime(out, t)
}
case bitStringType:
return marshalBitString(out, value.Interface().(BitString))
case objectIdentifierType:
return marshalObjectIdentifier(out, value.Interface().(ObjectIdentifier))
case bigIntType:
return marshalBigInt(out, value.Interface().(*big.Int))
}
switch v := value; v.Kind() {
case reflect.Bool:
if v.Bool() {
return out.WriteByte(255)
} else {
return out.WriteByte(0)
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return marshalInt64(out, v.Int())
case reflect.Struct:
t := v.Type()
startingField := 0
// If the first element of the structure is a non-empty
// RawContents, then we don't bother serializing the rest.
if t.NumField() > 0 && t.Field(0).Type == rawContentsType {
s := v.Field(0)
if s.Len() > 0 {
bytes := make([]byte, s.Len())
for i := 0; i < s.Len(); i++ {
bytes[i] = uint8(s.Index(i).Uint())
}
/* The RawContents will contain the tag and
* length fields but we'll also be writing
* those ourselves, so we strip them out of
* bytes */
_, err = out.Write(stripTagAndLength(bytes))
return
} else {
startingField = 1
}
}
for i := startingField; i < t.NumField(); i++ {
var pre *forkableWriter
pre, out = out.fork()
err = marshalField(pre, v.Field(i), parseFieldParameters(t.Field(i).Tag.Get("asn1")))
if err != nil {
return
}
}
return
case reflect.Slice:
sliceType := v.Type()
if sliceType.Elem().Kind() == reflect.Uint8 {
bytes := make([]byte, v.Len())
for i := 0; i < v.Len(); i++ {
bytes[i] = uint8(v.Index(i).Uint())
}
_, err = out.Write(bytes)
return
}
// jtasn1 Pass on the tags to the members but need to unset explicit switch and implicit value
//var fp fieldParameters
params.explicit = false
params.tag = nil
for i := 0; i < v.Len(); i++ {
var pre *forkableWriter
pre, out = out.fork()
err = marshalField(pre, v.Index(i), params)
if err != nil {
return
}
}
return
case reflect.String:
switch params.stringType {
case TagIA5String:
return marshalIA5String(out, v.String())
case TagPrintableString:
return marshalPrintableString(out, v.String())
default:
return marshalUTF8String(out, v.String())
}
}
return StructuralError{"unknown Go type"}
}
func marshalField(out *forkableWriter, v reflect.Value, params fieldParameters) (err error) {
if !v.IsValid() {
return fmt.Errorf("asn1: cannot marshal nil value")
}
// If the field is an interface{} then recurse into it.
if v.Kind() == reflect.Interface && v.Type().NumMethod() == 0 {
return marshalField(out, v.Elem(), params)
}
if v.Kind() == reflect.Slice && v.Len() == 0 && params.omitEmpty {
return
}
if params.optional && params.defaultValue != nil && canHaveDefaultValue(v.Kind()) {
defaultValue := reflect.New(v.Type()).Elem()
defaultValue.SetInt(*params.defaultValue)
if reflect.DeepEqual(v.Interface(), defaultValue.Interface()) {
return
}
}
// If no default value is given then the zero value for the type is
// assumed to be the default value. This isn't obviously the correct
// behaviour, but it's what Go has traditionally done.
if params.optional && params.defaultValue == nil {
if reflect.DeepEqual(v.Interface(), reflect.Zero(v.Type()).Interface()) {
return
}
}
if v.Type() == rawValueType {
rv := v.Interface().(RawValue)
if len(rv.FullBytes) != 0 {
_, err = out.Write(rv.FullBytes)
} else {
err = marshalTagAndLength(out, tagAndLength{rv.Class, rv.Tag, len(rv.Bytes), rv.IsCompound})
if err != nil {
return
}
_, err = out.Write(rv.Bytes)
}
return
}
tag, isCompound, ok := getUniversalType(v.Type())
if !ok {
err = StructuralError{fmt.Sprintf("unknown Go type: %v", v.Type())}
return
}
class := ClassUniversal
if params.timeType != 0 && tag != TagUTCTime {
return StructuralError{"explicit time type given to non-time member"}
}
// jtasn1 updated to allow slices of strings
if params.stringType != 0 && !(tag == TagPrintableString || (v.Kind() == reflect.Slice && tag == 16 && v.Type().Elem().Kind() == reflect.String)) {
return StructuralError{"explicit string type given to non-string member"}
}
switch tag {
case TagPrintableString:
if params.stringType == 0 {
// This is a string without an explicit string type. We'll use
// a PrintableString if the character set in the string is
// sufficiently limited, otherwise we'll use a UTF8String.
for _, r := range v.String() {
if r >= utf8.RuneSelf || !isPrintable(byte(r)) {
if !utf8.ValidString(v.String()) {
return errors.New("asn1: string not valid UTF-8")
}
tag = TagUTF8String
break
}
}
} else {
tag = params.stringType
}
case TagUTCTime:
if params.timeType == TagGeneralizedTime || outsideUTCRange(v.Interface().(time.Time)) {
tag = TagGeneralizedTime
}
}
if params.set {
if tag != TagSequence {
return StructuralError{"non sequence tagged as set"}
}
tag = TagSet
}
tags, body := out.fork()
err = marshalBody(body, v, params)
if err != nil {
return
}
bodyLen := body.Len()
var explicitTag *forkableWriter
if params.explicit {
explicitTag, tags = tags.fork()
}
if !params.explicit && params.tag != nil {
// implicit tag.
tag = *params.tag
class = ClassContextSpecific
}
err = marshalTagAndLength(tags, tagAndLength{class, tag, bodyLen, isCompound})
if err != nil {
return
}
if params.explicit {
err = marshalTagAndLength(explicitTag, tagAndLength{
class: ClassContextSpecific,
tag: *params.tag,
length: bodyLen + tags.Len(),
isCompound: true,
})
}
return err
}
// Marshal returns the ASN.1 encoding of val.
//
// In addition to the struct tags recognised by Unmarshal, the following can be
// used:
//
// ia5: causes strings to be marshaled as ASN.1, IA5 strings
// omitempty: causes empty slices to be skipped
// printable: causes strings to be marshaled as ASN.1, PrintableString strings.
// utf8: causes strings to be marshaled as ASN.1, UTF8 strings
func Marshal(val interface{}) ([]byte, error) {
var out bytes.Buffer
v := reflect.ValueOf(val)
f := newForkableWriter()
err := marshalField(f, v, fieldParameters{})
if err != nil {
return nil, err
}
_, err = f.writeTo(&out)
return out.Bytes(), err
}

98
vendor/github.com/jcmturner/gofork/x/crypto/pbkdf2/pbkdf2.go generated vendored Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package pbkdf2 implements the key derivation function PBKDF2 as defined in RFC
2898 / PKCS #5 v2.0.
A key derivation function is useful when encrypting data based on a password
or any other not-fully-random data. It uses a pseudorandom function to derive
a secure encryption key based on the password.
While v2.0 of the standard defines only one pseudorandom function to use,
HMAC-SHA1, the drafted v2.1 specification allows use of all five FIPS Approved
Hash Functions SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 for HMAC. To
choose, you can pass the `New` functions from the different SHA packages to
pbkdf2.Key.
*/
package pbkdf2
import (
"crypto/hmac"
"hash"
)
// Key derives a key from the password, salt and iteration count, returning a
// []byte of length keylen that can be used as cryptographic key. The key is
// derived based on the method described as PBKDF2 with the HMAC variant using
// the supplied hash function.
//
// For example, to use a HMAC-SHA-1 based PBKDF2 key derivation function, you
// can get a derived key for e.g. AES-256 (which needs a 32-byte key) by
// doing:
//
// dk := pbkdf2.Key([]byte("some password"), salt, 4096, 32, sha1.New)
//
// Remember to get a good random salt. At least 8 bytes is recommended by the
// RFC.
//
// Using a higher iteration count will increase the cost of an exhaustive
// search but will also make derivation proportionally slower.
func Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
return Key64(password, salt, int64(iter), int64(keyLen), h)
}
// Key64 derives a key from the password, salt and iteration count, returning a
// []byte of length keylen that can be used as cryptographic key. Key64 uses
// int64 for the iteration count and key length to allow larger values.
// The key is derived based on the method described as PBKDF2 with the HMAC
// variant using the supplied hash function.
//
// For example, to use a HMAC-SHA-1 based PBKDF2 key derivation function, you
// can get a derived key for e.g. AES-256 (which needs a 32-byte key) by
// doing:
//
// dk := pbkdf2.Key([]byte("some password"), salt, 4096, 32, sha1.New)
//
// Remember to get a good random salt. At least 8 bytes is recommended by the
// RFC.
//
// Using a higher iteration count will increase the cost of an exhaustive
// search but will also make derivation proportionally slower.
func Key64(password, salt []byte, iter, keyLen int64, h func() hash.Hash) []byte {
prf := hmac.New(h, password)
hashLen := int64(prf.Size())
numBlocks := (keyLen + hashLen - 1) / hashLen
var buf [4]byte
dk := make([]byte, 0, numBlocks*hashLen)
U := make([]byte, hashLen)
for block := int64(1); block <= numBlocks; block++ {
// N.B.: || means concatenation, ^ means XOR
// for each block T_i = U_1 ^ U_2 ^ ... ^ U_iter
// U_1 = PRF(password, salt || uint(i))
prf.Reset()
prf.Write(salt)
buf[0] = byte(block >> 24)
buf[1] = byte(block >> 16)
buf[2] = byte(block >> 8)
buf[3] = byte(block)
prf.Write(buf[:4])
dk = prf.Sum(dk)
T := dk[int64(len(dk))-hashLen:]
copy(U, T)
// U_n = PRF(password, U_(n-1))
for n := int64(2); n <= iter; n++ {
prf.Reset()
prf.Write(U)
U = U[:0]
U = prf.Sum(U)
for x := range U {
T[x] ^= U[x]
}
}
}
return dk[:keyLen]
}

201
vendor/github.com/jcmturner/goidentity/v6/LICENSE generated vendored Normal file
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@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
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8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright {yyyy} {name of copyright owner}
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

7
vendor/github.com/jcmturner/goidentity/v6/README.md generated vendored Normal file
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@ -0,0 +1,7 @@
# goidentity
[![GoDoc](https://godoc.org/github.com/jcmturner/goidentity/v6?status.svg)](https://godoc.org/github.com/jcmturner/goidentity/v6) [![Go Report Card](https://goreportcard.com/badge/github.com/jcmturner/goidentity/v6)](https://goreportcard.com/report/github.com/jcmturner/goidentity/v6)
Please import as below
```
import "github.com/jcmturner/goidentity/v6"
```

6
vendor/github.com/jcmturner/goidentity/v6/authenticator.go generated vendored Normal file
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package goidentity
type Authenticator interface {
Authenticate() (Identity, bool, error)
Mechanism() string // gives the name of the type of authentication mechanism
}

8
vendor/github.com/jcmturner/goidentity/v6/go.mod generated vendored Normal file
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module github.com/jcmturner/goidentity/v6
go 1.13
require (
github.com/hashicorp/go-uuid v1.0.2
github.com/stretchr/testify v1.4.0
)

12
vendor/github.com/jcmturner/goidentity/v6/go.sum generated vendored Normal file
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@ -0,0 +1,12 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/hashicorp/go-uuid v1.0.2 h1:cfejS+Tpcp13yd5nYHWDI6qVCny6wyX2Mt5SGur2IGE=
github.com/hashicorp/go-uuid v1.0.2/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

52
vendor/github.com/jcmturner/goidentity/v6/identity.go generated vendored Normal file
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@ -0,0 +1,52 @@
package goidentity
import (
"context"
"net/http"
"time"
)
const (
CTXKey = "jcmturner/goidentity"
)
type Identity interface {
UserName() string
SetUserName(s string)
Domain() string
SetDomain(s string)
DisplayName() string
SetDisplayName(s string)
Human() bool
SetHuman(b bool)
AuthTime() time.Time
SetAuthTime(t time.Time)
AuthzAttributes() []string
AddAuthzAttribute(a string)
RemoveAuthzAttribute(a string)
Authenticated() bool
SetAuthenticated(b bool)
Authorized(a string) bool
SessionID() string
Expired() bool
Attributes() map[string]interface{}
SetAttribute(k string, v interface{})
SetAttributes(map[string]interface{})
RemoveAttribute(k string)
Marshal() ([]byte, error)
Unmarshal([]byte) error
}
func AddToHTTPRequestContext(id Identity, r *http.Request) *http.Request {
ctx := r.Context()
ctx = context.WithValue(ctx, CTXKey, id)
return r.WithContext(ctx)
}
func FromHTTPRequestContext(r *http.Request) Identity {
ctx := r.Context()
if id, ok := ctx.Value(CTXKey).(Identity); ok {
return id
}
return nil
}

172
vendor/github.com/jcmturner/goidentity/v6/user.go generated vendored Normal file
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package goidentity
import (
"bytes"
"encoding/gob"
"github.com/hashicorp/go-uuid"
"time"
)
type User struct {
authenticated bool
domain string
userName string
displayName string
email string
human bool
groupMembership map[string]bool
authTime time.Time
sessionID string
expiry time.Time
attributes map[string]interface{}
}
func NewUser(username string) User {
uuid, err := uuid.GenerateUUID()
if err != nil {
uuid = "00unique-sess-ions-uuid-unavailable0"
}
return User{
userName: username,
groupMembership: make(map[string]bool),
sessionID: uuid,
}
}
func (u *User) UserName() string {
return u.userName
}
func (u *User) SetUserName(s string) {
u.userName = s
}
func (u *User) Domain() string {
return u.domain
}
func (u *User) SetDomain(s string) {
u.domain = s
}
func (u *User) DisplayName() string {
if u.displayName == "" {
return u.userName
}
return u.displayName
}
func (u *User) SetDisplayName(s string) {
u.displayName = s
}
func (u *User) Human() bool {
return u.human
}
func (u *User) SetHuman(b bool) {
u.human = b
}
func (u *User) AuthTime() time.Time {
return u.authTime
}
func (u *User) SetAuthTime(t time.Time) {
u.authTime = t
}
func (u *User) AuthzAttributes() []string {
s := make([]string, len(u.groupMembership))
i := 0
for a := range u.groupMembership {
s[i] = a
i++
}
return s
}
func (u *User) Authenticated() bool {
return u.authenticated
}
func (u *User) SetAuthenticated(b bool) {
u.authenticated = b
}
func (u *User) AddAuthzAttribute(a string) {
u.groupMembership[a] = true
}
func (u *User) RemoveAuthzAttribute(a string) {
if _, ok := u.groupMembership[a]; !ok {
return
}
delete(u.groupMembership, a)
}
func (u *User) EnableAuthzAttribute(a string) {
if enabled, ok := u.groupMembership[a]; ok && !enabled {
u.groupMembership[a] = true
}
}
func (u *User) DisableAuthzAttribute(a string) {
if enabled, ok := u.groupMembership[a]; ok && enabled {
u.groupMembership[a] = false
}
}
func (u *User) Authorized(a string) bool {
if enabled, ok := u.groupMembership[a]; ok && enabled {
return true
}
return false
}
func (u *User) SessionID() string {
return u.sessionID
}
func (u *User) SetExpiry(t time.Time) {
u.expiry = t
}
func (u *User) Expired() bool {
if !u.expiry.IsZero() && time.Now().UTC().After(u.expiry) {
return true
}
return false
}
func (u *User) Attributes() map[string]interface{} {
return u.attributes
}
func (u *User) SetAttribute(k string, v interface{}) {
u.attributes[k] = v
}
func (u *User) SetAttributes(a map[string]interface{}) {
u.attributes = a
}
func (u *User) RemoveAttribute(k string) {
delete(u.attributes, k)
}
func (u *User) Marshal() ([]byte, error) {
buf := new(bytes.Buffer)
enc := gob.NewEncoder(buf)
err := enc.Encode(u)
if err != nil {
return []byte{}, err
}
return buf.Bytes(), nil
}
func (u *User) Unmarshal(b []byte) error {
buf := bytes.NewBuffer(b)
dec := gob.NewDecoder(buf)
return dec.Decode(u)
}

201
vendor/github.com/jcmturner/gokrb5/v8/LICENSE generated vendored Normal file
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@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
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the terms of any separate license agreement you may have executed
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
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and charge a fee for, acceptance of support, warranty, indemnity,
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on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
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replaced with your own identifying information. (Don't include
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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86
vendor/github.com/jcmturner/gokrb5/v8/asn1tools/tools.go generated vendored Normal file
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// Package asn1tools provides tools for managing ASN1 marshaled data.
package asn1tools
import (
"github.com/jcmturner/gofork/encoding/asn1"
)
// MarshalLengthBytes returns the ASN1 encoded bytes for the length 'l'
//
// There are two forms: short (for lengths between 0 and 127), and long definite (for lengths between 0 and 2^1008 -1).
//
// Short form: One octet. Bit 8 has value "0" and bits 7-1 give the length.
//
// Long form: Two to 127 octets. Bit 8 of first octet has value "1" and bits 7-1 give the number of additional length octets. Second and following octets give the length, base 256, most significant digit first.
func MarshalLengthBytes(l int) []byte {
if l <= 127 {
return []byte{byte(l)}
}
var b []byte
p := 1
for i := 1; i < 127; {
b = append([]byte{byte((l % (p * 256)) / p)}, b...)
p = p * 256
l = l - l%p
if l <= 0 {
break
}
}
return append([]byte{byte(128 + len(b))}, b...)
}
// GetLengthFromASN returns the length of a slice of ASN1 encoded bytes from the ASN1 length header it contains.
func GetLengthFromASN(b []byte) int {
if int(b[1]) <= 127 {
return int(b[1])
}
// The bytes that indicate the length
lb := b[2 : 2+int(b[1])-128]
base := 1
l := 0
for i := len(lb) - 1; i >= 0; i-- {
l += int(lb[i]) * base
base = base * 256
}
return l
}
// GetNumberBytesInLengthHeader returns the number of bytes in the ASn1 header that indicate the length.
func GetNumberBytesInLengthHeader(b []byte) int {
if int(b[1]) <= 127 {
return 1
}
// The bytes that indicate the length
return 1 + int(b[1]) - 128
}
// AddASNAppTag adds an ASN1 encoding application tag value to the raw bytes provided.
func AddASNAppTag(b []byte, tag int) []byte {
r := asn1.RawValue{
Class: asn1.ClassApplication,
IsCompound: true,
Tag: tag,
Bytes: b,
}
ab, _ := asn1.Marshal(r)
return ab
}
/*
// The Marshal method of golang's asn1 package does not enable you to define wrapping the output in an application tag.
// This method adds that wrapping tag.
func AddASNAppTag(b []byte, tag int) []byte {
// The ASN1 wrapping consists of 2 bytes:
// 1st byte -> Identifier Octet - Application Tag
// 2nd byte -> The length (this will be the size indicated in the input bytes + 2 for the additional bytes we add here.
// Application Tag:
//| Bit: | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
//| Value: | 0 | 1 | 1 | From the RFC spec 4120 |
//| Explanation | Defined by the ASN1 encoding rules for an application tag | A value of 1 indicates a constructed type | The ASN Application tag value |
// Therefore the value of the byte is an integer = ( Application tag value + 96 )
//b = append(MarshalLengthBytes(int(b[1])+2), b...)
b = append(MarshalLengthBytes(len(b)), b...)
b = append([]byte{byte(96 + tag)}, b...)
return b
}
*/

182
vendor/github.com/jcmturner/gokrb5/v8/client/ASExchange.go generated vendored Normal file
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package client
import (
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
"github.com/jcmturner/gokrb5/v8/iana/errorcode"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/iana/patype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
)
// ASExchange performs an AS exchange for the client to retrieve a TGT.
func (cl *Client) ASExchange(realm string, ASReq messages.ASReq, referral int) (messages.ASRep, error) {
if ok, err := cl.IsConfigured(); !ok {
return messages.ASRep{}, krberror.Errorf(err, krberror.ConfigError, "AS Exchange cannot be performed")
}
// Set PAData if required
err := setPAData(cl, nil, &ASReq)
if err != nil {
return messages.ASRep{}, krberror.Errorf(err, krberror.KRBMsgError, "AS Exchange Error: issue with setting PAData on AS_REQ")
}
b, err := ASReq.Marshal()
if err != nil {
return messages.ASRep{}, krberror.Errorf(err, krberror.EncodingError, "AS Exchange Error: failed marshaling AS_REQ")
}
var ASRep messages.ASRep
rb, err := cl.sendToKDC(b, realm)
if err != nil {
if e, ok := err.(messages.KRBError); ok {
switch e.ErrorCode {
case errorcode.KDC_ERR_PREAUTH_REQUIRED, errorcode.KDC_ERR_PREAUTH_FAILED:
// From now on assume this client will need to do this pre-auth and set the PAData
cl.settings.assumePreAuthentication = true
err = setPAData(cl, &e, &ASReq)
if err != nil {
return messages.ASRep{}, krberror.Errorf(err, krberror.KRBMsgError, "AS Exchange Error: failed setting AS_REQ PAData for pre-authentication required")
}
b, err := ASReq.Marshal()
if err != nil {
return messages.ASRep{}, krberror.Errorf(err, krberror.EncodingError, "AS Exchange Error: failed marshaling AS_REQ with PAData")
}
rb, err = cl.sendToKDC(b, realm)
if err != nil {
if _, ok := err.(messages.KRBError); ok {
return messages.ASRep{}, krberror.Errorf(err, krberror.KDCError, "AS Exchange Error: kerberos error response from KDC")
}
return messages.ASRep{}, krberror.Errorf(err, krberror.NetworkingError, "AS Exchange Error: failed sending AS_REQ to KDC")
}
case errorcode.KDC_ERR_WRONG_REALM:
// Client referral https://tools.ietf.org/html/rfc6806.html#section-7
if referral > 5 {
return messages.ASRep{}, krberror.Errorf(err, krberror.KRBMsgError, "maximum number of client referrals exceeded")
}
referral++
return cl.ASExchange(e.CRealm, ASReq, referral)
default:
return messages.ASRep{}, krberror.Errorf(err, krberror.KDCError, "AS Exchange Error: kerberos error response from KDC")
}
} else {
return messages.ASRep{}, krberror.Errorf(err, krberror.NetworkingError, "AS Exchange Error: failed sending AS_REQ to KDC")
}
}
err = ASRep.Unmarshal(rb)
if err != nil {
return messages.ASRep{}, krberror.Errorf(err, krberror.EncodingError, "AS Exchange Error: failed to process the AS_REP")
}
if ok, err := ASRep.Verify(cl.Config, cl.Credentials, ASReq); !ok {
return messages.ASRep{}, krberror.Errorf(err, krberror.KRBMsgError, "AS Exchange Error: AS_REP is not valid or client password/keytab incorrect")
}
return ASRep, nil
}
// setPAData adds pre-authentication data to the AS_REQ.
func setPAData(cl *Client, krberr *messages.KRBError, ASReq *messages.ASReq) error {
if !cl.settings.DisablePAFXFAST() {
pa := types.PAData{PADataType: patype.PA_REQ_ENC_PA_REP}
ASReq.PAData = append(ASReq.PAData, pa)
}
if cl.settings.AssumePreAuthentication() {
// Identify the etype to use to encrypt the PA Data
var et etype.EType
var err error
var key types.EncryptionKey
var kvno int
if krberr == nil {
// This is not in response to an error from the KDC. It is preemptive or renewal
// There is no KRB Error that tells us the etype to use
etn := cl.settings.preAuthEType // Use the etype that may have previously been negotiated
if etn == 0 {
etn = int32(cl.Config.LibDefaults.PreferredPreauthTypes[0]) // Resort to config
}
et, err = crypto.GetEtype(etn)
if err != nil {
return krberror.Errorf(err, krberror.EncryptingError, "error getting etype for pre-auth encryption")
}
key, kvno, err = cl.Key(et, 0, nil)
if err != nil {
return krberror.Errorf(err, krberror.EncryptingError, "error getting key from credentials")
}
} else {
// Get the etype to use from the PA data in the KRBError e-data
et, err = preAuthEType(krberr)
if err != nil {
return krberror.Errorf(err, krberror.EncryptingError, "error getting etype for pre-auth encryption")
}
cl.settings.preAuthEType = et.GetETypeID() // Set the etype that has been defined for potential future use
key, kvno, err = cl.Key(et, 0, krberr)
if err != nil {
return krberror.Errorf(err, krberror.EncryptingError, "error getting key from credentials")
}
}
// Generate the PA data
paTSb, err := types.GetPAEncTSEncAsnMarshalled()
if err != nil {
return krberror.Errorf(err, krberror.KRBMsgError, "error creating PAEncTSEnc for Pre-Authentication")
}
paEncTS, err := crypto.GetEncryptedData(paTSb, key, keyusage.AS_REQ_PA_ENC_TIMESTAMP, kvno)
if err != nil {
return krberror.Errorf(err, krberror.EncryptingError, "error encrypting pre-authentication timestamp")
}
pb, err := paEncTS.Marshal()
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error marshaling the PAEncTSEnc encrypted data")
}
pa := types.PAData{
PADataType: patype.PA_ENC_TIMESTAMP,
PADataValue: pb,
}
// Look for and delete any exiting patype.PA_ENC_TIMESTAMP
for i, pa := range ASReq.PAData {
if pa.PADataType == patype.PA_ENC_TIMESTAMP {
ASReq.PAData[i] = ASReq.PAData[len(ASReq.PAData)-1]
ASReq.PAData = ASReq.PAData[:len(ASReq.PAData)-1]
}
}
ASReq.PAData = append(ASReq.PAData, pa)
}
return nil
}
// preAuthEType establishes what encryption type to use for pre-authentication from the KRBError returned from the KDC.
func preAuthEType(krberr *messages.KRBError) (etype etype.EType, err error) {
//RFC 4120 5.2.7.5 covers the preference order of ETYPE-INFO2 and ETYPE-INFO.
var etypeID int32
var pas types.PADataSequence
e := pas.Unmarshal(krberr.EData)
if e != nil {
err = krberror.Errorf(e, krberror.EncodingError, "error unmashalling KRBError data")
return
}
Loop:
for _, pa := range pas {
switch pa.PADataType {
case patype.PA_ETYPE_INFO2:
info, e := pa.GetETypeInfo2()
if e != nil {
err = krberror.Errorf(e, krberror.EncodingError, "error unmashalling ETYPE-INFO2 data")
return
}
etypeID = info[0].EType
break Loop
case patype.PA_ETYPE_INFO:
info, e := pa.GetETypeInfo()
if e != nil {
err = krberror.Errorf(e, krberror.EncodingError, "error unmashalling ETYPE-INFO data")
return
}
etypeID = info[0].EType
}
}
etype, e = crypto.GetEtype(etypeID)
if e != nil {
err = krberror.Errorf(e, krberror.EncryptingError, "error creating etype")
return
}
return etype, nil
}

103
vendor/github.com/jcmturner/gokrb5/v8/client/TGSExchange.go generated vendored Normal file
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package client
import (
"github.com/jcmturner/gokrb5/v8/iana/flags"
"github.com/jcmturner/gokrb5/v8/iana/nametype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
)
// TGSREQGenerateAndExchange generates the TGS_REQ and performs a TGS exchange to retrieve a ticket to the specified SPN.
func (cl *Client) TGSREQGenerateAndExchange(spn types.PrincipalName, kdcRealm string, tgt messages.Ticket, sessionKey types.EncryptionKey, renewal bool) (tgsReq messages.TGSReq, tgsRep messages.TGSRep, err error) {
tgsReq, err = messages.NewTGSReq(cl.Credentials.CName(), kdcRealm, cl.Config, tgt, sessionKey, spn, renewal)
if err != nil {
return tgsReq, tgsRep, krberror.Errorf(err, krberror.KRBMsgError, "TGS Exchange Error: failed to generate a new TGS_REQ")
}
return cl.TGSExchange(tgsReq, kdcRealm, tgsRep.Ticket, sessionKey, 0)
}
// TGSExchange exchanges the provided TGS_REQ with the KDC to retrieve a TGS_REP.
// Referrals are automatically handled.
// The client's cache is updated with the ticket received.
func (cl *Client) TGSExchange(tgsReq messages.TGSReq, kdcRealm string, tgt messages.Ticket, sessionKey types.EncryptionKey, referral int) (messages.TGSReq, messages.TGSRep, error) {
var tgsRep messages.TGSRep
b, err := tgsReq.Marshal()
if err != nil {
return tgsReq, tgsRep, krberror.Errorf(err, krberror.EncodingError, "TGS Exchange Error: failed to marshal TGS_REQ")
}
r, err := cl.sendToKDC(b, kdcRealm)
if err != nil {
if _, ok := err.(messages.KRBError); ok {
return tgsReq, tgsRep, krberror.Errorf(err, krberror.KDCError, "TGS Exchange Error: kerberos error response from KDC when requesting for %s", tgsReq.ReqBody.SName.PrincipalNameString())
}
return tgsReq, tgsRep, krberror.Errorf(err, krberror.NetworkingError, "TGS Exchange Error: issue sending TGS_REQ to KDC")
}
err = tgsRep.Unmarshal(r)
if err != nil {
return tgsReq, tgsRep, krberror.Errorf(err, krberror.EncodingError, "TGS Exchange Error: failed to process the TGS_REP")
}
err = tgsRep.DecryptEncPart(sessionKey)
if err != nil {
return tgsReq, tgsRep, krberror.Errorf(err, krberror.EncodingError, "TGS Exchange Error: failed to process the TGS_REP")
}
if ok, err := tgsRep.Verify(cl.Config, tgsReq); !ok {
return tgsReq, tgsRep, krberror.Errorf(err, krberror.EncodingError, "TGS Exchange Error: TGS_REP is not valid")
}
if tgsRep.Ticket.SName.NameString[0] == "krbtgt" && !tgsRep.Ticket.SName.Equal(tgsReq.ReqBody.SName) {
if referral > 5 {
return tgsReq, tgsRep, krberror.Errorf(err, krberror.KRBMsgError, "TGS Exchange Error: maximum number of referrals exceeded")
}
// Server referral https://tools.ietf.org/html/rfc6806.html#section-8
// The TGS Rep contains a TGT for another domain as the service resides in that domain.
cl.addSession(tgsRep.Ticket, tgsRep.DecryptedEncPart)
realm := tgsRep.Ticket.SName.NameString[len(tgsRep.Ticket.SName.NameString)-1]
referral++
if types.IsFlagSet(&tgsReq.ReqBody.KDCOptions, flags.EncTktInSkey) && len(tgsReq.ReqBody.AdditionalTickets) > 0 {
tgsReq, err = messages.NewUser2UserTGSReq(cl.Credentials.CName(), kdcRealm, cl.Config, tgt, sessionKey, tgsReq.ReqBody.SName, tgsReq.Renewal, tgsReq.ReqBody.AdditionalTickets[0])
if err != nil {
return tgsReq, tgsRep, err
}
}
tgsReq, err = messages.NewTGSReq(cl.Credentials.CName(), realm, cl.Config, tgsRep.Ticket, tgsRep.DecryptedEncPart.Key, tgsReq.ReqBody.SName, tgsReq.Renewal)
if err != nil {
return tgsReq, tgsRep, err
}
return cl.TGSExchange(tgsReq, realm, tgsRep.Ticket, tgsRep.DecryptedEncPart.Key, referral)
}
cl.cache.addEntry(
tgsRep.Ticket,
tgsRep.DecryptedEncPart.AuthTime,
tgsRep.DecryptedEncPart.StartTime,
tgsRep.DecryptedEncPart.EndTime,
tgsRep.DecryptedEncPart.RenewTill,
tgsRep.DecryptedEncPart.Key,
)
cl.Log("ticket added to cache for %s (EndTime: %v)", tgsRep.Ticket.SName.PrincipalNameString(), tgsRep.DecryptedEncPart.EndTime)
return tgsReq, tgsRep, err
}
// GetServiceTicket makes a request to get a service ticket for the SPN specified
// SPN format: <SERVICE>/<FQDN> Eg. HTTP/www.example.com
// The ticket will be added to the client's ticket cache
func (cl *Client) GetServiceTicket(spn string) (messages.Ticket, types.EncryptionKey, error) {
var tkt messages.Ticket
var skey types.EncryptionKey
if tkt, skey, ok := cl.GetCachedTicket(spn); ok {
// Already a valid ticket in the cache
return tkt, skey, nil
}
princ := types.NewPrincipalName(nametype.KRB_NT_PRINCIPAL, spn)
realm := cl.Config.ResolveRealm(princ.NameString[len(princ.NameString)-1])
tgt, skey, err := cl.sessionTGT(realm)
if err != nil {
return tkt, skey, err
}
_, tgsRep, err := cl.TGSREQGenerateAndExchange(princ, realm, tgt, skey, false)
if err != nil {
return tkt, skey, err
}
return tgsRep.Ticket, tgsRep.DecryptedEncPart.Key, nil
}

134
vendor/github.com/jcmturner/gokrb5/v8/client/cache.go generated vendored Normal file
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package client
import (
"encoding/json"
"errors"
"sort"
"sync"
"time"
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
)
// Cache for service tickets held by the client.
type Cache struct {
Entries map[string]CacheEntry
mux sync.RWMutex
}
// CacheEntry holds details for a cache entry.
type CacheEntry struct {
SPN string
Ticket messages.Ticket `json:"-"`
AuthTime time.Time
StartTime time.Time
EndTime time.Time
RenewTill time.Time
SessionKey types.EncryptionKey `json:"-"`
}
// NewCache creates a new client ticket cache instance.
func NewCache() *Cache {
return &Cache{
Entries: map[string]CacheEntry{},
}
}
// getEntry returns a cache entry that matches the SPN.
func (c *Cache) getEntry(spn string) (CacheEntry, bool) {
c.mux.RLock()
defer c.mux.RUnlock()
e, ok := (*c).Entries[spn]
return e, ok
}
// JSON returns information about the cached service tickets in a JSON format.
func (c *Cache) JSON() (string, error) {
c.mux.RLock()
defer c.mux.RUnlock()
var es []CacheEntry
keys := make([]string, 0, len(c.Entries))
for k := range c.Entries {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
es = append(es, c.Entries[k])
}
b, err := json.MarshalIndent(&es, "", " ")
if err != nil {
return "", err
}
return string(b), nil
}
// addEntry adds a ticket to the cache.
func (c *Cache) addEntry(tkt messages.Ticket, authTime, startTime, endTime, renewTill time.Time, sessionKey types.EncryptionKey) CacheEntry {
spn := tkt.SName.PrincipalNameString()
c.mux.Lock()
defer c.mux.Unlock()
(*c).Entries[spn] = CacheEntry{
SPN: spn,
Ticket: tkt,
AuthTime: authTime,
StartTime: startTime,
EndTime: endTime,
RenewTill: renewTill,
SessionKey: sessionKey,
}
return c.Entries[spn]
}
// clear deletes all the cache entries
func (c *Cache) clear() {
c.mux.Lock()
defer c.mux.Unlock()
for k := range c.Entries {
delete(c.Entries, k)
}
}
// RemoveEntry removes the cache entry for the defined SPN.
func (c *Cache) RemoveEntry(spn string) {
c.mux.Lock()
defer c.mux.Unlock()
delete(c.Entries, spn)
}
// GetCachedTicket returns a ticket from the cache for the SPN.
// Only a ticket that is currently valid will be returned.
func (cl *Client) GetCachedTicket(spn string) (messages.Ticket, types.EncryptionKey, bool) {
if e, ok := cl.cache.getEntry(spn); ok {
//If within time window of ticket return it
if time.Now().UTC().After(e.StartTime) && time.Now().UTC().Before(e.EndTime) {
cl.Log("ticket received from cache for %s", spn)
return e.Ticket, e.SessionKey, true
} else if time.Now().UTC().Before(e.RenewTill) {
e, err := cl.renewTicket(e)
if err != nil {
return e.Ticket, e.SessionKey, false
}
return e.Ticket, e.SessionKey, true
}
}
var tkt messages.Ticket
var key types.EncryptionKey
return tkt, key, false
}
// renewTicket renews a cache entry ticket.
// To renew from outside the client package use GetCachedTicket
func (cl *Client) renewTicket(e CacheEntry) (CacheEntry, error) {
spn := e.Ticket.SName
_, _, err := cl.TGSREQGenerateAndExchange(spn, e.Ticket.Realm, e.Ticket, e.SessionKey, true)
if err != nil {
return e, err
}
e, ok := cl.cache.getEntry(e.Ticket.SName.PrincipalNameString())
if !ok {
return e, errors.New("ticket was not added to cache")
}
cl.Log("ticket renewed for %s (EndTime: %v)", spn.PrincipalNameString(), e.EndTime)
return e, nil
}

329
vendor/github.com/jcmturner/gokrb5/v8/client/client.go generated vendored Normal file
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@ -0,0 +1,329 @@
// Package client provides a client library and methods for Kerberos 5 authentication.
package client
import (
"encoding/json"
"errors"
"fmt"
"io"
"strings"
"time"
"github.com/jcmturner/gokrb5/v8/config"
"github.com/jcmturner/gokrb5/v8/credentials"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
"github.com/jcmturner/gokrb5/v8/iana/errorcode"
"github.com/jcmturner/gokrb5/v8/iana/nametype"
"github.com/jcmturner/gokrb5/v8/keytab"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
)
// Client side configuration and state.
type Client struct {
Credentials *credentials.Credentials
Config *config.Config
settings *Settings
sessions *sessions
cache *Cache
}
// NewWithPassword creates a new client from a password credential.
// Set the realm to empty string to use the default realm from config.
func NewWithPassword(username, realm, password string, krb5conf *config.Config, settings ...func(*Settings)) *Client {
creds := credentials.New(username, realm)
return &Client{
Credentials: creds.WithPassword(password),
Config: krb5conf,
settings: NewSettings(settings...),
sessions: &sessions{
Entries: make(map[string]*session),
},
cache: NewCache(),
}
}
// NewWithKeytab creates a new client from a keytab credential.
func NewWithKeytab(username, realm string, kt *keytab.Keytab, krb5conf *config.Config, settings ...func(*Settings)) *Client {
creds := credentials.New(username, realm)
return &Client{
Credentials: creds.WithKeytab(kt),
Config: krb5conf,
settings: NewSettings(settings...),
sessions: &sessions{
Entries: make(map[string]*session),
},
cache: NewCache(),
}
}
// NewFromCCache create a client from a populated client cache.
//
// WARNING: A client created from CCache does not automatically renew TGTs and a failure will occur after the TGT expires.
func NewFromCCache(c *credentials.CCache, krb5conf *config.Config, settings ...func(*Settings)) (*Client, error) {
cl := &Client{
Credentials: c.GetClientCredentials(),
Config: krb5conf,
settings: NewSettings(settings...),
sessions: &sessions{
Entries: make(map[string]*session),
},
cache: NewCache(),
}
spn := types.PrincipalName{
NameType: nametype.KRB_NT_SRV_INST,
NameString: []string{"krbtgt", c.DefaultPrincipal.Realm},
}
cred, ok := c.GetEntry(spn)
if !ok {
return cl, errors.New("TGT not found in CCache")
}
var tgt messages.Ticket
err := tgt.Unmarshal(cred.Ticket)
if err != nil {
return cl, fmt.Errorf("TGT bytes in cache are not valid: %v", err)
}
cl.sessions.Entries[c.DefaultPrincipal.Realm] = &session{
realm: c.DefaultPrincipal.Realm,
authTime: cred.AuthTime,
endTime: cred.EndTime,
renewTill: cred.RenewTill,
tgt: tgt,
sessionKey: cred.Key,
}
for _, cred := range c.GetEntries() {
var tkt messages.Ticket
err = tkt.Unmarshal(cred.Ticket)
if err != nil {
return cl, fmt.Errorf("cache entry ticket bytes are not valid: %v", err)
}
cl.cache.addEntry(
tkt,
cred.AuthTime,
cred.StartTime,
cred.EndTime,
cred.RenewTill,
cred.Key,
)
}
return cl, nil
}
// Key returns the client's encryption key for the specified encryption type and its kvno (kvno of zero will find latest).
// The key can be retrieved either from the keytab or generated from the client's password.
// If the client has both a keytab and a password defined the keytab is favoured as the source for the key
// A KRBError can be passed in the event the KDC returns one of type KDC_ERR_PREAUTH_REQUIRED and is required to derive
// the key for pre-authentication from the client's password. If a KRBError is not available, pass nil to this argument.
func (cl *Client) Key(etype etype.EType, kvno int, krberr *messages.KRBError) (types.EncryptionKey, int, error) {
if cl.Credentials.HasKeytab() && etype != nil {
return cl.Credentials.Keytab().GetEncryptionKey(cl.Credentials.CName(), cl.Credentials.Domain(), kvno, etype.GetETypeID())
} else if cl.Credentials.HasPassword() {
if krberr != nil && krberr.ErrorCode == errorcode.KDC_ERR_PREAUTH_REQUIRED {
var pas types.PADataSequence
err := pas.Unmarshal(krberr.EData)
if err != nil {
return types.EncryptionKey{}, 0, fmt.Errorf("could not get PAData from KRBError to generate key from password: %v", err)
}
key, _, err := crypto.GetKeyFromPassword(cl.Credentials.Password(), krberr.CName, krberr.CRealm, etype.GetETypeID(), pas)
return key, 0, err
}
key, _, err := crypto.GetKeyFromPassword(cl.Credentials.Password(), cl.Credentials.CName(), cl.Credentials.Domain(), etype.GetETypeID(), types.PADataSequence{})
return key, 0, err
}
return types.EncryptionKey{}, 0, errors.New("credential has neither keytab or password to generate key")
}
// IsConfigured indicates if the client has the values required set.
func (cl *Client) IsConfigured() (bool, error) {
if cl.Credentials.UserName() == "" {
return false, errors.New("client does not have a username")
}
if cl.Credentials.Domain() == "" {
return false, errors.New("client does not have a define realm")
}
// Client needs to have either a password, keytab or a session already (later when loading from CCache)
if !cl.Credentials.HasPassword() && !cl.Credentials.HasKeytab() {
authTime, _, _, _, err := cl.sessionTimes(cl.Credentials.Domain())
if err != nil || authTime.IsZero() {
return false, errors.New("client has neither a keytab nor a password set and no session")
}
}
if !cl.Config.LibDefaults.DNSLookupKDC {
for _, r := range cl.Config.Realms {
if r.Realm == cl.Credentials.Domain() {
if len(r.KDC) > 0 {
return true, nil
}
return false, errors.New("client krb5 config does not have any defined KDCs for the default realm")
}
}
}
return true, nil
}
// Login the client with the KDC via an AS exchange.
func (cl *Client) Login() error {
if ok, err := cl.IsConfigured(); !ok {
return err
}
if !cl.Credentials.HasPassword() && !cl.Credentials.HasKeytab() {
_, endTime, _, _, err := cl.sessionTimes(cl.Credentials.Domain())
if err != nil {
return krberror.Errorf(err, krberror.KRBMsgError, "no user credentials available and error getting any existing session")
}
if time.Now().UTC().After(endTime) {
return krberror.New(krberror.KRBMsgError, "cannot login, no user credentials available and no valid existing session")
}
// no credentials but there is a session with tgt already
return nil
}
ASReq, err := messages.NewASReqForTGT(cl.Credentials.Domain(), cl.Config, cl.Credentials.CName())
if err != nil {
return krberror.Errorf(err, krberror.KRBMsgError, "error generating new AS_REQ")
}
ASRep, err := cl.ASExchange(cl.Credentials.Domain(), ASReq, 0)
if err != nil {
return err
}
cl.addSession(ASRep.Ticket, ASRep.DecryptedEncPart)
return nil
}
// AffirmLogin will only perform an AS exchange with the KDC if the client does not already have a TGT.
func (cl *Client) AffirmLogin() error {
_, endTime, _, _, err := cl.sessionTimes(cl.Credentials.Domain())
if err != nil || time.Now().UTC().After(endTime) {
err := cl.Login()
if err != nil {
return fmt.Errorf("could not get valid TGT for client's realm: %v", err)
}
}
return nil
}
// realmLogin obtains or renews a TGT and establishes a session for the realm specified.
func (cl *Client) realmLogin(realm string) error {
if realm == cl.Credentials.Domain() {
return cl.Login()
}
_, endTime, _, _, err := cl.sessionTimes(cl.Credentials.Domain())
if err != nil || time.Now().UTC().After(endTime) {
err := cl.Login()
if err != nil {
return fmt.Errorf("could not get valid TGT for client's realm: %v", err)
}
}
tgt, skey, err := cl.sessionTGT(cl.Credentials.Domain())
if err != nil {
return err
}
spn := types.PrincipalName{
NameType: nametype.KRB_NT_SRV_INST,
NameString: []string{"krbtgt", realm},
}
_, tgsRep, err := cl.TGSREQGenerateAndExchange(spn, cl.Credentials.Domain(), tgt, skey, false)
if err != nil {
return err
}
cl.addSession(tgsRep.Ticket, tgsRep.DecryptedEncPart)
return nil
}
// Destroy stops the auto-renewal of all sessions and removes the sessions and cache entries from the client.
func (cl *Client) Destroy() {
creds := credentials.New("", "")
cl.sessions.destroy()
cl.cache.clear()
cl.Credentials = creds
cl.Log("client destroyed")
}
// Diagnostics runs a set of checks that the client is properly configured and writes details to the io.Writer provided.
func (cl *Client) Diagnostics(w io.Writer) error {
cl.Print(w)
var errs []string
if cl.Credentials.HasKeytab() {
var loginRealmEncTypes []int32
for _, e := range cl.Credentials.Keytab().Entries {
if e.Principal.Realm == cl.Credentials.Realm() {
loginRealmEncTypes = append(loginRealmEncTypes, e.Key.KeyType)
}
}
for _, et := range cl.Config.LibDefaults.DefaultTktEnctypeIDs {
var etInKt bool
for _, val := range loginRealmEncTypes {
if val == et {
etInKt = true
break
}
}
if !etInKt {
errs = append(errs, fmt.Sprintf("default_tkt_enctypes specifies %d but this enctype is not available in the client's keytab", et))
}
}
for _, et := range cl.Config.LibDefaults.PreferredPreauthTypes {
var etInKt bool
for _, val := range loginRealmEncTypes {
if int(val) == et {
etInKt = true
break
}
}
if !etInKt {
errs = append(errs, fmt.Sprintf("preferred_preauth_types specifies %d but this enctype is not available in the client's keytab", et))
}
}
}
udpCnt, udpKDC, err := cl.Config.GetKDCs(cl.Credentials.Realm(), false)
if err != nil {
errs = append(errs, fmt.Sprintf("error when resolving KDCs for UDP communication: %v", err))
}
if udpCnt < 1 {
errs = append(errs, "no KDCs resolved for communication via UDP.")
} else {
b, _ := json.MarshalIndent(&udpKDC, "", " ")
fmt.Fprintf(w, "UDP KDCs: %s\n", string(b))
}
tcpCnt, tcpKDC, err := cl.Config.GetKDCs(cl.Credentials.Realm(), false)
if err != nil {
errs = append(errs, fmt.Sprintf("error when resolving KDCs for TCP communication: %v", err))
}
if tcpCnt < 1 {
errs = append(errs, "no KDCs resolved for communication via TCP.")
} else {
b, _ := json.MarshalIndent(&tcpKDC, "", " ")
fmt.Fprintf(w, "TCP KDCs: %s\n", string(b))
}
if errs == nil || len(errs) < 1 {
return nil
}
err = fmt.Errorf(strings.Join(errs, "\n"))
return err
}
// Print writes the details of the client to the io.Writer provided.
func (cl *Client) Print(w io.Writer) {
c, _ := cl.Credentials.JSON()
fmt.Fprintf(w, "Credentials:\n%s\n", c)
s, _ := cl.sessions.JSON()
fmt.Fprintf(w, "TGT Sessions:\n%s\n", s)
c, _ = cl.cache.JSON()
fmt.Fprintf(w, "Service ticket cache:\n%s\n", c)
s, _ = cl.settings.JSON()
fmt.Fprintf(w, "Settings:\n%s\n", s)
j, _ := cl.Config.JSON()
fmt.Fprintf(w, "Krb5 config:\n%s\n", j)
k, _ := cl.Credentials.Keytab().JSON()
fmt.Fprintf(w, "Keytab:\n%s\n", k)
}

213
vendor/github.com/jcmturner/gokrb5/v8/client/network.go generated vendored Normal file
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@ -0,0 +1,213 @@
package client
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"io"
"net"
"time"
"github.com/jcmturner/gokrb5/v8/iana/errorcode"
"github.com/jcmturner/gokrb5/v8/messages"
)
// SendToKDC performs network actions to send data to the KDC.
func (cl *Client) sendToKDC(b []byte, realm string) ([]byte, error) {
var rb []byte
if cl.Config.LibDefaults.UDPPreferenceLimit == 1 {
//1 means we should always use TCP
rb, errtcp := cl.sendKDCTCP(realm, b)
if errtcp != nil {
if e, ok := errtcp.(messages.KRBError); ok {
return rb, e
}
return rb, fmt.Errorf("communication error with KDC via TCP: %v", errtcp)
}
return rb, nil
}
if len(b) <= cl.Config.LibDefaults.UDPPreferenceLimit {
//Try UDP first, TCP second
rb, errudp := cl.sendKDCUDP(realm, b)
if errudp != nil {
if e, ok := errudp.(messages.KRBError); ok && e.ErrorCode != errorcode.KRB_ERR_RESPONSE_TOO_BIG {
// Got a KRBError from KDC
// If this is not a KRB_ERR_RESPONSE_TOO_BIG we will return immediately otherwise will try TCP.
return rb, e
}
// Try TCP
r, errtcp := cl.sendKDCTCP(realm, b)
if errtcp != nil {
if e, ok := errtcp.(messages.KRBError); ok {
// Got a KRBError
return r, e
}
return r, fmt.Errorf("failed to communicate with KDC. Attempts made with UDP (%v) and then TCP (%v)", errudp, errtcp)
}
rb = r
}
return rb, nil
}
//Try TCP first, UDP second
rb, errtcp := cl.sendKDCTCP(realm, b)
if errtcp != nil {
if e, ok := errtcp.(messages.KRBError); ok {
// Got a KRBError from KDC so returning and not trying UDP.
return rb, e
}
rb, errudp := cl.sendKDCUDP(realm, b)
if errudp != nil {
if e, ok := errudp.(messages.KRBError); ok {
// Got a KRBError
return rb, e
}
return rb, fmt.Errorf("failed to communicate with KDC. Attempts made with TCP (%v) and then UDP (%v)", errtcp, errudp)
}
}
return rb, nil
}
// dialKDCTCP establishes a UDP connection to a KDC.
func dialKDCUDP(count int, kdcs map[int]string) (*net.UDPConn, error) {
i := 1
for i <= count {
udpAddr, err := net.ResolveUDPAddr("udp", kdcs[i])
if err != nil {
return nil, fmt.Errorf("error resolving KDC address: %v", err)
}
conn, err := net.DialTimeout("udp", udpAddr.String(), 5*time.Second)
if err == nil {
if err := conn.SetDeadline(time.Now().Add(5 * time.Second)); err != nil {
return nil, err
}
// conn is guaranteed to be a UDPConn
return conn.(*net.UDPConn), nil
}
i++
}
return nil, errors.New("error in getting a UDP connection to any of the KDCs")
}
// dialKDCTCP establishes a TCP connection to a KDC.
func dialKDCTCP(count int, kdcs map[int]string) (*net.TCPConn, error) {
i := 1
for i <= count {
tcpAddr, err := net.ResolveTCPAddr("tcp", kdcs[i])
if err != nil {
return nil, fmt.Errorf("error resolving KDC address: %v", err)
}
conn, err := net.DialTimeout("tcp", tcpAddr.String(), 5*time.Second)
if err == nil {
if err := conn.SetDeadline(time.Now().Add(5 * time.Second)); err != nil {
return nil, err
}
// conn is guaranteed to be a TCPConn
return conn.(*net.TCPConn), nil
}
i++
}
return nil, errors.New("error in getting a TCP connection to any of the KDCs")
}
// sendKDCUDP sends bytes to the KDC via UDP.
func (cl *Client) sendKDCUDP(realm string, b []byte) ([]byte, error) {
var r []byte
count, kdcs, err := cl.Config.GetKDCs(realm, false)
if err != nil {
return r, err
}
conn, err := dialKDCUDP(count, kdcs)
if err != nil {
return r, err
}
r, err = cl.sendUDP(conn, b)
if err != nil {
return r, err
}
return checkForKRBError(r)
}
// sendKDCTCP sends bytes to the KDC via TCP.
func (cl *Client) sendKDCTCP(realm string, b []byte) ([]byte, error) {
var r []byte
count, kdcs, err := cl.Config.GetKDCs(realm, true)
if err != nil {
return r, err
}
conn, err := dialKDCTCP(count, kdcs)
if err != nil {
return r, err
}
rb, err := cl.sendTCP(conn, b)
if err != nil {
return r, err
}
return checkForKRBError(rb)
}
// sendUDP sends bytes to connection over UDP.
func (cl *Client) sendUDP(conn *net.UDPConn, b []byte) ([]byte, error) {
var r []byte
defer conn.Close()
_, err := conn.Write(b)
if err != nil {
return r, fmt.Errorf("error sending to (%s): %v", conn.RemoteAddr().String(), err)
}
udpbuf := make([]byte, 4096)
n, _, err := conn.ReadFrom(udpbuf)
r = udpbuf[:n]
if err != nil {
return r, fmt.Errorf("sending over UDP failed to %s: %v", conn.RemoteAddr().String(), err)
}
if len(r) < 1 {
return r, fmt.Errorf("no response data from %s", conn.RemoteAddr().String())
}
return r, nil
}
// sendTCP sends bytes to connection over TCP.
func (cl *Client) sendTCP(conn *net.TCPConn, b []byte) ([]byte, error) {
defer conn.Close()
var r []byte
// RFC 4120 7.2.2 specifies the first 4 bytes indicate the length of the message in big endian order.
var buf bytes.Buffer
err := binary.Write(&buf, binary.BigEndian, uint32(len(b)))
if err != nil {
return r, err
}
b = append(buf.Bytes(), b...)
_, err = conn.Write(b)
if err != nil {
return r, fmt.Errorf("error sending to KDC (%s): %v", conn.RemoteAddr().String(), err)
}
sh := make([]byte, 4, 4)
_, err = conn.Read(sh)
if err != nil {
return r, fmt.Errorf("error reading response size header: %v", err)
}
s := binary.BigEndian.Uint32(sh)
rb := make([]byte, s, s)
_, err = io.ReadFull(conn, rb)
if err != nil {
return r, fmt.Errorf("error reading response: %v", err)
}
if len(rb) < 1 {
return r, fmt.Errorf("no response data from KDC %s", conn.RemoteAddr().String())
}
return rb, nil
}
// checkForKRBError checks if the response bytes from the KDC are a KRBError.
func checkForKRBError(b []byte) ([]byte, error) {
var KRBErr messages.KRBError
if err := KRBErr.Unmarshal(b); err == nil {
return b, KRBErr
}
return b, nil
}

95
vendor/github.com/jcmturner/gokrb5/v8/client/passwd.go generated vendored Normal file
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@ -0,0 +1,95 @@
package client
import (
"fmt"
"net"
"github.com/jcmturner/gokrb5/v8/kadmin"
"github.com/jcmturner/gokrb5/v8/messages"
)
// Kpasswd server response codes.
const (
KRB5_KPASSWD_SUCCESS = 0
KRB5_KPASSWD_MALFORMED = 1
KRB5_KPASSWD_HARDERROR = 2
KRB5_KPASSWD_AUTHERROR = 3
KRB5_KPASSWD_SOFTERROR = 4
KRB5_KPASSWD_ACCESSDENIED = 5
KRB5_KPASSWD_BAD_VERSION = 6
KRB5_KPASSWD_INITIAL_FLAG_NEEDED = 7
)
// ChangePasswd changes the password of the client to the value provided.
func (cl *Client) ChangePasswd(newPasswd string) (bool, error) {
ASReq, err := messages.NewASReqForChgPasswd(cl.Credentials.Domain(), cl.Config, cl.Credentials.CName())
if err != nil {
return false, err
}
ASRep, err := cl.ASExchange(cl.Credentials.Domain(), ASReq, 0)
if err != nil {
return false, err
}
msg, key, err := kadmin.ChangePasswdMsg(cl.Credentials.CName(), cl.Credentials.Domain(), newPasswd, ASRep.Ticket, ASRep.DecryptedEncPart.Key)
if err != nil {
return false, err
}
r, err := cl.sendToKPasswd(msg)
if err != nil {
return false, err
}
err = r.Decrypt(key)
if err != nil {
return false, err
}
if r.ResultCode != KRB5_KPASSWD_SUCCESS {
return false, fmt.Errorf("error response from kadmin: code: %d; result: %s; krberror: %v", r.ResultCode, r.Result, r.KRBError)
}
cl.Credentials.WithPassword(newPasswd)
return true, nil
}
func (cl *Client) sendToKPasswd(msg kadmin.Request) (r kadmin.Reply, err error) {
_, kps, err := cl.Config.GetKpasswdServers(cl.Credentials.Domain(), true)
if err != nil {
return
}
addr := kps[1]
b, err := msg.Marshal()
if err != nil {
return
}
if len(b) <= cl.Config.LibDefaults.UDPPreferenceLimit {
return cl.sendKPasswdUDP(b, addr)
}
return cl.sendKPasswdTCP(b, addr)
}
func (cl *Client) sendKPasswdTCP(b []byte, kadmindAddr string) (r kadmin.Reply, err error) {
tcpAddr, err := net.ResolveTCPAddr("tcp", kadmindAddr)
if err != nil {
return
}
conn, err := net.DialTCP("tcp", nil, tcpAddr)
if err != nil {
return
}
rb, err := cl.sendTCP(conn, b)
err = r.Unmarshal(rb)
return
}
func (cl *Client) sendKPasswdUDP(b []byte, kadmindAddr string) (r kadmin.Reply, err error) {
udpAddr, err := net.ResolveUDPAddr("udp", kadmindAddr)
if err != nil {
return
}
conn, err := net.DialUDP("udp", nil, udpAddr)
if err != nil {
return
}
rb, err := cl.sendUDP(conn, b)
err = r.Unmarshal(rb)
return
}

295
vendor/github.com/jcmturner/gokrb5/v8/client/session.go generated vendored Normal file
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@ -0,0 +1,295 @@
package client
import (
"encoding/json"
"fmt"
"sort"
"strings"
"sync"
"time"
"github.com/jcmturner/gokrb5/v8/iana/nametype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
)
// sessions hold TGTs and are keyed on the realm name
type sessions struct {
Entries map[string]*session
mux sync.RWMutex
}
// destroy erases all sessions
func (s *sessions) destroy() {
s.mux.Lock()
defer s.mux.Unlock()
for k, e := range s.Entries {
e.destroy()
delete(s.Entries, k)
}
}
// update replaces a session with the one provided or adds it as a new one
func (s *sessions) update(sess *session) {
s.mux.Lock()
defer s.mux.Unlock()
// if a session already exists for this, cancel its auto renew.
if i, ok := s.Entries[sess.realm]; ok {
if i != sess {
// Session in the sessions cache is not the same as one provided.
// Cancel the one in the cache and add this one.
i.mux.Lock()
defer i.mux.Unlock()
i.cancel <- true
s.Entries[sess.realm] = sess
return
}
}
// No session for this realm was found so just add it
s.Entries[sess.realm] = sess
}
// get returns the session for the realm specified
func (s *sessions) get(realm string) (*session, bool) {
s.mux.RLock()
defer s.mux.RUnlock()
sess, ok := s.Entries[realm]
return sess, ok
}
// session holds the TGT details for a realm
type session struct {
realm string
authTime time.Time
endTime time.Time
renewTill time.Time
tgt messages.Ticket
sessionKey types.EncryptionKey
sessionKeyExpiration time.Time
cancel chan bool
mux sync.RWMutex
}
// jsonSession is used to enable marshaling some information of a session in a JSON format
type jsonSession struct {
Realm string
AuthTime time.Time
EndTime time.Time
RenewTill time.Time
SessionKeyExpiration time.Time
}
// AddSession adds a session for a realm with a TGT to the client's session cache.
// A goroutine is started to automatically renew the TGT before expiry.
func (cl *Client) addSession(tgt messages.Ticket, dep messages.EncKDCRepPart) {
if strings.ToLower(tgt.SName.NameString[0]) != "krbtgt" {
// Not a TGT
return
}
realm := tgt.SName.NameString[len(tgt.SName.NameString)-1]
s := &session{
realm: realm,
authTime: dep.AuthTime,
endTime: dep.EndTime,
renewTill: dep.RenewTill,
tgt: tgt,
sessionKey: dep.Key,
sessionKeyExpiration: dep.KeyExpiration,
}
cl.sessions.update(s)
cl.enableAutoSessionRenewal(s)
cl.Log("TGT session added for %s (EndTime: %v)", realm, dep.EndTime)
}
// update overwrites the session details with those from the TGT and decrypted encPart
func (s *session) update(tgt messages.Ticket, dep messages.EncKDCRepPart) {
s.mux.Lock()
defer s.mux.Unlock()
s.authTime = dep.AuthTime
s.endTime = dep.EndTime
s.renewTill = dep.RenewTill
s.tgt = tgt
s.sessionKey = dep.Key
s.sessionKeyExpiration = dep.KeyExpiration
}
// destroy will cancel any auto renewal of the session and set the expiration times to the current time
func (s *session) destroy() {
s.mux.Lock()
defer s.mux.Unlock()
if s.cancel != nil {
s.cancel <- true
}
s.endTime = time.Now().UTC()
s.renewTill = s.endTime
s.sessionKeyExpiration = s.endTime
}
// valid informs if the TGT is still within the valid time window
func (s *session) valid() bool {
s.mux.RLock()
defer s.mux.RUnlock()
t := time.Now().UTC()
if t.Before(s.endTime) && s.authTime.Before(t) {
return true
}
return false
}
// tgtDetails is a thread safe way to get the session's realm, TGT and session key values
func (s *session) tgtDetails() (string, messages.Ticket, types.EncryptionKey) {
s.mux.RLock()
defer s.mux.RUnlock()
return s.realm, s.tgt, s.sessionKey
}
// timeDetails is a thread safe way to get the session's validity time values
func (s *session) timeDetails() (string, time.Time, time.Time, time.Time, time.Time) {
s.mux.RLock()
defer s.mux.RUnlock()
return s.realm, s.authTime, s.endTime, s.renewTill, s.sessionKeyExpiration
}
// JSON return information about the held sessions in a JSON format.
func (s *sessions) JSON() (string, error) {
s.mux.RLock()
defer s.mux.RUnlock()
var js []jsonSession
keys := make([]string, 0, len(s.Entries))
for k := range s.Entries {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
r, at, et, rt, kt := s.Entries[k].timeDetails()
j := jsonSession{
Realm: r,
AuthTime: at,
EndTime: et,
RenewTill: rt,
SessionKeyExpiration: kt,
}
js = append(js, j)
}
b, err := json.MarshalIndent(js, "", " ")
if err != nil {
return "", err
}
return string(b), nil
}
// enableAutoSessionRenewal turns on the automatic renewal for the client's TGT session.
func (cl *Client) enableAutoSessionRenewal(s *session) {
var timer *time.Timer
s.mux.Lock()
s.cancel = make(chan bool, 1)
s.mux.Unlock()
go func(s *session) {
for {
s.mux.RLock()
w := (s.endTime.Sub(time.Now().UTC()) * 5) / 6
s.mux.RUnlock()
if w < 0 {
return
}
timer = time.NewTimer(w)
select {
case <-timer.C:
renewal, err := cl.refreshSession(s)
if err != nil {
cl.Log("error refreshing session: %v", err)
}
if !renewal && err == nil {
// end this goroutine as there will have been a new login and new auto renewal goroutine created.
return
}
case <-s.cancel:
// cancel has been called. Stop the timer and exit.
timer.Stop()
return
}
}
}(s)
}
// renewTGT renews the client's TGT session.
func (cl *Client) renewTGT(s *session) error {
realm, tgt, skey := s.tgtDetails()
spn := types.PrincipalName{
NameType: nametype.KRB_NT_SRV_INST,
NameString: []string{"krbtgt", realm},
}
_, tgsRep, err := cl.TGSREQGenerateAndExchange(spn, cl.Credentials.Domain(), tgt, skey, true)
if err != nil {
return krberror.Errorf(err, krberror.KRBMsgError, "error renewing TGT for %s", realm)
}
s.update(tgsRep.Ticket, tgsRep.DecryptedEncPart)
cl.sessions.update(s)
cl.Log("TGT session renewed for %s (EndTime: %v)", realm, tgsRep.DecryptedEncPart.EndTime)
return nil
}
// refreshSession updates either through renewal or creating a new login.
// The boolean indicates if the update was a renewal.
func (cl *Client) refreshSession(s *session) (bool, error) {
s.mux.RLock()
realm := s.realm
renewTill := s.renewTill
s.mux.RUnlock()
cl.Log("refreshing TGT session for %s", realm)
if time.Now().UTC().Before(renewTill) {
err := cl.renewTGT(s)
return true, err
}
err := cl.realmLogin(realm)
return false, err
}
// ensureValidSession makes sure there is a valid session for the realm
func (cl *Client) ensureValidSession(realm string) error {
s, ok := cl.sessions.get(realm)
if ok {
s.mux.RLock()
d := s.endTime.Sub(s.authTime) / 6
if s.endTime.Sub(time.Now().UTC()) > d {
s.mux.RUnlock()
return nil
}
s.mux.RUnlock()
_, err := cl.refreshSession(s)
return err
}
return cl.realmLogin(realm)
}
// sessionTGTDetails is a thread safe way to get the TGT and session key values for a realm
func (cl *Client) sessionTGT(realm string) (tgt messages.Ticket, sessionKey types.EncryptionKey, err error) {
err = cl.ensureValidSession(realm)
if err != nil {
return
}
s, ok := cl.sessions.get(realm)
if !ok {
err = fmt.Errorf("could not find TGT session for %s", realm)
return
}
_, tgt, sessionKey = s.tgtDetails()
return
}
// sessionTimes provides the timing information with regards to a session for the realm specified.
func (cl *Client) sessionTimes(realm string) (authTime, endTime, renewTime, sessionExp time.Time, err error) {
s, ok := cl.sessions.get(realm)
if !ok {
err = fmt.Errorf("could not find TGT session for %s", realm)
return
}
_, authTime, endTime, renewTime, sessionExp = s.timeDetails()
return
}
// spnRealm resolves the realm name of a service principal name
func (cl *Client) spnRealm(spn types.PrincipalName) string {
return cl.Config.ResolveRealm(spn.NameString[len(spn.NameString)-1])
}

93
vendor/github.com/jcmturner/gokrb5/v8/client/settings.go generated vendored Normal file
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package client
import (
"encoding/json"
"fmt"
"log"
)
// Settings holds optional client settings.
type Settings struct {
disablePAFXFast bool
assumePreAuthentication bool
preAuthEType int32
logger *log.Logger
}
// jsonSettings is used when marshaling the Settings details to JSON format.
type jsonSettings struct {
DisablePAFXFast bool
AssumePreAuthentication bool
}
// NewSettings creates a new client settings struct.
func NewSettings(settings ...func(*Settings)) *Settings {
s := new(Settings)
for _, set := range settings {
set(s)
}
return s
}
// DisablePAFXFAST used to configure the client to not use PA_FX_FAST.
//
// s := NewSettings(DisablePAFXFAST(true))
func DisablePAFXFAST(b bool) func(*Settings) {
return func(s *Settings) {
s.disablePAFXFast = b
}
}
// DisablePAFXFAST indicates is the client should disable the use of PA_FX_FAST.
func (s *Settings) DisablePAFXFAST() bool {
return s.disablePAFXFast
}
// AssumePreAuthentication used to configure the client to assume pre-authentication is required.
//
// s := NewSettings(AssumePreAuthentication(true))
func AssumePreAuthentication(b bool) func(*Settings) {
return func(s *Settings) {
s.assumePreAuthentication = b
}
}
// AssumePreAuthentication indicates if the client should proactively assume using pre-authentication.
func (s *Settings) AssumePreAuthentication() bool {
return s.assumePreAuthentication
}
// Logger used to configure client with a logger.
//
// s := NewSettings(kt, Logger(l))
func Logger(l *log.Logger) func(*Settings) {
return func(s *Settings) {
s.logger = l
}
}
// Logger returns the client logger instance.
func (s *Settings) Logger() *log.Logger {
return s.logger
}
// Log will write to the service's logger if it is configured.
func (cl *Client) Log(format string, v ...interface{}) {
if cl.settings.Logger() != nil {
cl.settings.Logger().Output(2, fmt.Sprintf(format, v...))
}
}
// JSON returns a JSON representation of the settings.
func (s *Settings) JSON() (string, error) {
js := jsonSettings{
DisablePAFXFast: s.disablePAFXFast,
AssumePreAuthentication: s.assumePreAuthentication,
}
b, err := json.MarshalIndent(js, "", " ")
if err != nil {
return "", err
}
return string(b), nil
}

30
vendor/github.com/jcmturner/gokrb5/v8/config/error.go generated vendored Normal file
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@ -0,0 +1,30 @@
package config
import "fmt"
// UnsupportedDirective error.
type UnsupportedDirective struct {
text string
}
// Error implements the error interface for unsupported directives.
func (e UnsupportedDirective) Error() string {
return e.text
}
// Invalid config error.
type Invalid struct {
text string
}
// Error implements the error interface for invalid config error.
func (e Invalid) Error() string {
return e.text
}
// InvalidErrorf creates a new Invalid error.
func InvalidErrorf(format string, a ...interface{}) Invalid {
return Invalid{
text: fmt.Sprintf("invalid krb5 config "+format, a...),
}
}

141
vendor/github.com/jcmturner/gokrb5/v8/config/hosts.go generated vendored Normal file
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package config
import (
"fmt"
"math/rand"
"net"
"strconv"
"strings"
"github.com/jcmturner/dnsutils/v2"
)
// GetKDCs returns the count of KDCs available and a map of KDC host names keyed on preference order.
func (c *Config) GetKDCs(realm string, tcp bool) (int, map[int]string, error) {
if realm == "" {
realm = c.LibDefaults.DefaultRealm
}
kdcs := make(map[int]string)
var count int
// Get the KDCs from the krb5.conf.
var ks []string
for _, r := range c.Realms {
if r.Realm != realm {
continue
}
ks = r.KDC
}
count = len(ks)
if count > 0 {
// Order the kdcs randomly for preference.
kdcs = randServOrder(ks)
return count, kdcs, nil
}
if !c.LibDefaults.DNSLookupKDC {
return count, kdcs, fmt.Errorf("no KDCs defined in configuration for realm %s", realm)
}
// Use DNS to resolve kerberos SRV records.
proto := "udp"
if tcp {
proto = "tcp"
}
index, addrs, err := dnsutils.OrderedSRV("kerberos", proto, realm)
if err != nil {
return count, kdcs, err
}
if len(addrs) < 1 {
return count, kdcs, fmt.Errorf("no KDC SRV records found for realm %s", realm)
}
count = index
for k, v := range addrs {
kdcs[k] = strings.TrimRight(v.Target, ".") + ":" + strconv.Itoa(int(v.Port))
}
return count, kdcs, nil
}
// GetKpasswdServers returns the count of kpasswd servers available and a map of kpasswd host names keyed on preference order.
// https://web.mit.edu/kerberos/krb5-latest/doc/admin/conf_files/krb5_conf.html#realms - see kpasswd_server section
func (c *Config) GetKpasswdServers(realm string, tcp bool) (int, map[int]string, error) {
kdcs := make(map[int]string)
var count int
// Use DNS to resolve kerberos SRV records if configured to do so in krb5.conf.
if c.LibDefaults.DNSLookupKDC {
proto := "udp"
if tcp {
proto = "tcp"
}
c, addrs, err := dnsutils.OrderedSRV("kpasswd", proto, realm)
if err != nil {
return count, kdcs, err
}
if c < 1 {
c, addrs, err = dnsutils.OrderedSRV("kerberos-adm", proto, realm)
if err != nil {
return count, kdcs, err
}
}
if len(addrs) < 1 {
return count, kdcs, fmt.Errorf("no kpasswd or kadmin SRV records found for realm %s", realm)
}
count = c
for k, v := range addrs {
kdcs[k] = strings.TrimRight(v.Target, ".") + ":" + strconv.Itoa(int(v.Port))
}
} else {
// Get the KDCs from the krb5.conf an order them randomly for preference.
var ks []string
var ka []string
for _, r := range c.Realms {
if r.Realm == realm {
ks = r.KPasswdServer
ka = r.AdminServer
break
}
}
if len(ks) < 1 {
for _, k := range ka {
h, _, err := net.SplitHostPort(k)
if err != nil {
continue
}
ks = append(ks, h+":464")
}
}
count = len(ks)
if count < 1 {
return count, kdcs, fmt.Errorf("no kpasswd or kadmin defined in configuration for realm %s", realm)
}
kdcs = randServOrder(ks)
}
return count, kdcs, nil
}
func randServOrder(ks []string) map[int]string {
kdcs := make(map[int]string)
count := len(ks)
i := 1
if count > 1 {
l := len(ks)
for l > 0 {
ri := rand.Intn(l)
kdcs[i] = ks[ri]
if l > 1 {
// Remove the entry from the source slice by swapping with the last entry and truncating
ks[len(ks)-1], ks[ri] = ks[ri], ks[len(ks)-1]
ks = ks[:len(ks)-1]
l = len(ks)
} else {
l = 0
}
i++
}
} else {
kdcs[i] = ks[0]
}
return kdcs
}

728
vendor/github.com/jcmturner/gokrb5/v8/config/krb5conf.go generated vendored Normal file
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@ -0,0 +1,728 @@
// Package config implements KRB5 client and service configuration as described at https://web.mit.edu/kerberos/krb5-latest/doc/admin/conf_files/krb5_conf.html
package config
import (
"bufio"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"io"
"net"
"os"
"os/user"
"regexp"
"strconv"
"strings"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
)
// Config represents the KRB5 configuration.
type Config struct {
LibDefaults LibDefaults
Realms []Realm
DomainRealm DomainRealm
//CaPaths
//AppDefaults
//Plugins
}
// WeakETypeList is a list of encryption types that have been deemed weak.
const WeakETypeList = "des-cbc-crc des-cbc-md4 des-cbc-md5 des-cbc-raw des3-cbc-raw des-hmac-sha1 arcfour-hmac-exp rc4-hmac-exp arcfour-hmac-md5-exp des"
// New creates a new config struct instance.
func New() *Config {
d := make(DomainRealm)
return &Config{
LibDefaults: newLibDefaults(),
DomainRealm: d,
}
}
// LibDefaults represents the [libdefaults] section of the configuration.
type LibDefaults struct {
AllowWeakCrypto bool //default false
// ap_req_checksum_type int //unlikely to support this
Canonicalize bool //default false
CCacheType int //default is 4. unlikely to implement older
Clockskew time.Duration //max allowed skew in seconds, default 300
//Default_ccache_name string // default /tmp/krb5cc_%{uid} //Not implementing as will hold in memory
DefaultClientKeytabName string //default /usr/local/var/krb5/user/%{euid}/client.keytab
DefaultKeytabName string //default /etc/krb5.keytab
DefaultRealm string
DefaultTGSEnctypes []string //default aes256-cts-hmac-sha1-96 aes128-cts-hmac-sha1-96 des3-cbc-sha1 arcfour-hmac-md5 camellia256-cts-cmac camellia128-cts-cmac des-cbc-crc des-cbc-md5 des-cbc-md4
DefaultTktEnctypes []string //default aes256-cts-hmac-sha1-96 aes128-cts-hmac-sha1-96 des3-cbc-sha1 arcfour-hmac-md5 camellia256-cts-cmac camellia128-cts-cmac des-cbc-crc des-cbc-md5 des-cbc-md4
DefaultTGSEnctypeIDs []int32 //default aes256-cts-hmac-sha1-96 aes128-cts-hmac-sha1-96 des3-cbc-sha1 arcfour-hmac-md5 camellia256-cts-cmac camellia128-cts-cmac des-cbc-crc des-cbc-md5 des-cbc-md4
DefaultTktEnctypeIDs []int32 //default aes256-cts-hmac-sha1-96 aes128-cts-hmac-sha1-96 des3-cbc-sha1 arcfour-hmac-md5 camellia256-cts-cmac camellia128-cts-cmac des-cbc-crc des-cbc-md5 des-cbc-md4
DNSCanonicalizeHostname bool //default true
DNSLookupKDC bool //default false
DNSLookupRealm bool
ExtraAddresses []net.IP //Not implementing yet
Forwardable bool //default false
IgnoreAcceptorHostname bool //default false
K5LoginAuthoritative bool //default false
K5LoginDirectory string //default user's home directory. Must be owned by the user or root
KDCDefaultOptions asn1.BitString //default 0x00000010 (KDC_OPT_RENEWABLE_OK)
KDCTimeSync int //default 1
//kdc_req_checksum_type int //unlikely to implement as for very old KDCs
NoAddresses bool //default true
PermittedEnctypes []string //default aes256-cts-hmac-sha1-96 aes128-cts-hmac-sha1-96 des3-cbc-sha1 arcfour-hmac-md5 camellia256-cts-cmac camellia128-cts-cmac des-cbc-crc des-cbc-md5 des-cbc-md4
PermittedEnctypeIDs []int32
//plugin_base_dir string //not supporting plugins
PreferredPreauthTypes []int //default “17, 16, 15, 14”, which forces libkrb5 to attempt to use PKINIT if it is supported
Proxiable bool //default false
RDNS bool //default true
RealmTryDomains int //default -1
RenewLifetime time.Duration //default 0
SafeChecksumType int //default 8
TicketLifetime time.Duration //default 1 day
UDPPreferenceLimit int // 1 means to always use tcp. MIT krb5 has a default value of 1465, and it prevents user setting more than 32700.
VerifyAPReqNofail bool //default false
}
// Create a new LibDefaults struct.
func newLibDefaults() LibDefaults {
uid := "0"
var hdir string
usr, _ := user.Current()
if usr != nil {
uid = usr.Uid
hdir = usr.HomeDir
}
opts := asn1.BitString{}
opts.Bytes, _ = hex.DecodeString("00000010")
opts.BitLength = len(opts.Bytes) * 8
return LibDefaults{
CCacheType: 4,
Clockskew: time.Duration(300) * time.Second,
DefaultClientKeytabName: fmt.Sprintf("/usr/local/var/krb5/user/%s/client.keytab", uid),
DefaultKeytabName: "/etc/krb5.keytab",
DefaultTGSEnctypes: []string{"aes256-cts-hmac-sha1-96", "aes128-cts-hmac-sha1-96", "des3-cbc-sha1", "arcfour-hmac-md5", "camellia256-cts-cmac", "camellia128-cts-cmac", "des-cbc-crc", "des-cbc-md5", "des-cbc-md4"},
DefaultTktEnctypes: []string{"aes256-cts-hmac-sha1-96", "aes128-cts-hmac-sha1-96", "des3-cbc-sha1", "arcfour-hmac-md5", "camellia256-cts-cmac", "camellia128-cts-cmac", "des-cbc-crc", "des-cbc-md5", "des-cbc-md4"},
DNSCanonicalizeHostname: true,
K5LoginDirectory: hdir,
KDCDefaultOptions: opts,
KDCTimeSync: 1,
NoAddresses: true,
PermittedEnctypes: []string{"aes256-cts-hmac-sha1-96", "aes128-cts-hmac-sha1-96", "des3-cbc-sha1", "arcfour-hmac-md5", "camellia256-cts-cmac", "camellia128-cts-cmac", "des-cbc-crc", "des-cbc-md5", "des-cbc-md4"},
RDNS: true,
RealmTryDomains: -1,
SafeChecksumType: 8,
TicketLifetime: time.Duration(24) * time.Hour,
UDPPreferenceLimit: 1465,
PreferredPreauthTypes: []int{17, 16, 15, 14},
}
}
// Parse the lines of the [libdefaults] section of the configuration into the LibDefaults struct.
func (l *LibDefaults) parseLines(lines []string) error {
for _, line := range lines {
//Remove comments after the values
if idx := strings.IndexAny(line, "#;"); idx != -1 {
line = line[:idx]
}
line = strings.TrimSpace(line)
if line == "" {
continue
}
if !strings.Contains(line, "=") {
return InvalidErrorf("libdefaults section line (%s)", line)
}
p := strings.Split(line, "=")
key := strings.TrimSpace(strings.ToLower(p[0]))
switch key {
case "allow_weak_crypto":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.AllowWeakCrypto = v
case "canonicalize":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.Canonicalize = v
case "ccache_type":
p[1] = strings.TrimSpace(p[1])
v, err := strconv.ParseUint(p[1], 10, 32)
if err != nil || v < 0 || v > 4 {
return InvalidErrorf("libdefaults section line (%s)", line)
}
l.CCacheType = int(v)
case "clockskew":
d, err := parseDuration(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.Clockskew = d
case "default_client_keytab_name":
l.DefaultClientKeytabName = strings.TrimSpace(p[1])
case "default_keytab_name":
l.DefaultKeytabName = strings.TrimSpace(p[1])
case "default_realm":
l.DefaultRealm = strings.TrimSpace(p[1])
case "default_tgs_enctypes":
l.DefaultTGSEnctypes = strings.Fields(p[1])
case "default_tkt_enctypes":
l.DefaultTktEnctypes = strings.Fields(p[1])
case "dns_canonicalize_hostname":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.DNSCanonicalizeHostname = v
case "dns_lookup_kdc":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.DNSLookupKDC = v
case "dns_lookup_realm":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.DNSLookupRealm = v
case "extra_addresses":
ipStr := strings.TrimSpace(p[1])
for _, ip := range strings.Split(ipStr, ",") {
if eip := net.ParseIP(ip); eip != nil {
l.ExtraAddresses = append(l.ExtraAddresses, eip)
}
}
case "forwardable":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.Forwardable = v
case "ignore_acceptor_hostname":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.IgnoreAcceptorHostname = v
case "k5login_authoritative":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.K5LoginAuthoritative = v
case "k5login_directory":
l.K5LoginDirectory = strings.TrimSpace(p[1])
case "kdc_default_options":
v := strings.TrimSpace(p[1])
v = strings.Replace(v, "0x", "", -1)
b, err := hex.DecodeString(v)
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.KDCDefaultOptions.Bytes = b
l.KDCDefaultOptions.BitLength = len(b) * 8
case "kdc_timesync":
p[1] = strings.TrimSpace(p[1])
v, err := strconv.ParseInt(p[1], 10, 32)
if err != nil || v < 0 {
return InvalidErrorf("libdefaults section line (%s)", line)
}
l.KDCTimeSync = int(v)
case "noaddresses":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.NoAddresses = v
case "permitted_enctypes":
l.PermittedEnctypes = strings.Fields(p[1])
case "preferred_preauth_types":
p[1] = strings.TrimSpace(p[1])
t := strings.Split(p[1], ",")
var v []int
for _, s := range t {
i, err := strconv.ParseInt(s, 10, 32)
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
v = append(v, int(i))
}
l.PreferredPreauthTypes = v
case "proxiable":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.Proxiable = v
case "rdns":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.RDNS = v
case "realm_try_domains":
p[1] = strings.TrimSpace(p[1])
v, err := strconv.ParseInt(p[1], 10, 32)
if err != nil || v < -1 {
return InvalidErrorf("libdefaults section line (%s)", line)
}
l.RealmTryDomains = int(v)
case "renew_lifetime":
d, err := parseDuration(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.RenewLifetime = d
case "safe_checksum_type":
p[1] = strings.TrimSpace(p[1])
v, err := strconv.ParseInt(p[1], 10, 32)
if err != nil || v < 0 {
return InvalidErrorf("libdefaults section line (%s)", line)
}
l.SafeChecksumType = int(v)
case "ticket_lifetime":
d, err := parseDuration(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.TicketLifetime = d
case "udp_preference_limit":
p[1] = strings.TrimSpace(p[1])
v, err := strconv.ParseUint(p[1], 10, 32)
if err != nil || v > 32700 {
return InvalidErrorf("libdefaults section line (%s)", line)
}
l.UDPPreferenceLimit = int(v)
case "verify_ap_req_nofail":
v, err := parseBoolean(p[1])
if err != nil {
return InvalidErrorf("libdefaults section line (%s): %v", line, err)
}
l.VerifyAPReqNofail = v
}
}
l.DefaultTGSEnctypeIDs = parseETypes(l.DefaultTGSEnctypes, l.AllowWeakCrypto)
l.DefaultTktEnctypeIDs = parseETypes(l.DefaultTktEnctypes, l.AllowWeakCrypto)
l.PermittedEnctypeIDs = parseETypes(l.PermittedEnctypes, l.AllowWeakCrypto)
return nil
}
// Realm represents an entry in the [realms] section of the configuration.
type Realm struct {
Realm string
AdminServer []string
//auth_to_local //Not implementing for now
//auth_to_local_names //Not implementing for now
DefaultDomain string
KDC []string
KPasswdServer []string //default admin_server:464
MasterKDC []string
}
// Parse the lines of a [realms] entry into the Realm struct.
func (r *Realm) parseLines(name string, lines []string) (err error) {
r.Realm = name
var adminServerFinal bool
var KDCFinal bool
var kpasswdServerFinal bool
var masterKDCFinal bool
var ignore bool
var c int // counts the depth of blocks within brackets { }
for _, line := range lines {
if ignore && c > 0 && !strings.Contains(line, "{") && !strings.Contains(line, "}") {
continue
}
//Remove comments after the values
if idx := strings.IndexAny(line, "#;"); idx != -1 {
line = line[:idx]
}
line = strings.TrimSpace(line)
if line == "" {
continue
}
if !strings.Contains(line, "=") && !strings.Contains(line, "}") {
return InvalidErrorf("realms section line (%s)", line)
}
if strings.Contains(line, "v4_") {
ignore = true
err = UnsupportedDirective{"v4 configurations are not supported"}
}
if strings.Contains(line, "{") {
c++
if ignore {
continue
}
}
if strings.Contains(line, "}") {
c--
if c < 0 {
return InvalidErrorf("unpaired curly brackets")
}
if ignore {
if c < 1 {
c = 0
ignore = false
}
continue
}
}
p := strings.Split(line, "=")
key := strings.TrimSpace(strings.ToLower(p[0]))
v := strings.TrimSpace(p[1])
switch key {
case "admin_server":
appendUntilFinal(&r.AdminServer, v, &adminServerFinal)
case "default_domain":
r.DefaultDomain = v
case "kdc":
if !strings.Contains(v, ":") {
// No port number specified default to 88
if strings.HasSuffix(v, `*`) {
v = strings.TrimSpace(strings.TrimSuffix(v, `*`)) + ":88*"
} else {
v = strings.TrimSpace(v) + ":88"
}
}
appendUntilFinal(&r.KDC, v, &KDCFinal)
case "kpasswd_server":
appendUntilFinal(&r.KPasswdServer, v, &kpasswdServerFinal)
case "master_kdc":
appendUntilFinal(&r.MasterKDC, v, &masterKDCFinal)
}
}
//default for Kpasswd_server = admin_server:464
if len(r.KPasswdServer) < 1 {
for _, a := range r.AdminServer {
s := strings.Split(a, ":")
r.KPasswdServer = append(r.KPasswdServer, s[0]+":464")
}
}
return
}
// Parse the lines of the [realms] section of the configuration into an slice of Realm structs.
func parseRealms(lines []string) (realms []Realm, err error) {
var name string
var start int
var c int
for i, l := range lines {
//Remove comments after the values
if idx := strings.IndexAny(l, "#;"); idx != -1 {
l = l[:idx]
}
l = strings.TrimSpace(l)
if l == "" {
continue
}
//if strings.Contains(l, "v4_") {
// return nil, errors.New("v4 configurations are not supported in Realms section")
//}
if strings.Contains(l, "{") {
c++
if !strings.Contains(l, "=") {
return nil, fmt.Errorf("realm configuration line invalid: %s", l)
}
if c == 1 {
start = i
p := strings.Split(l, "=")
name = strings.TrimSpace(p[0])
}
}
if strings.Contains(l, "}") {
if c < 1 {
// but not started a block!!!
return nil, errors.New("invalid Realms section in configuration")
}
c--
if c == 0 {
var r Realm
e := r.parseLines(name, lines[start+1:i])
if e != nil {
if _, ok := e.(UnsupportedDirective); !ok {
err = e
return
}
err = e
}
realms = append(realms, r)
}
}
}
return
}
// DomainRealm maps the domains to realms representing the [domain_realm] section of the configuration.
type DomainRealm map[string]string
// Parse the lines of the [domain_realm] section of the configuration and add to the mapping.
func (d *DomainRealm) parseLines(lines []string) error {
for _, line := range lines {
//Remove comments after the values
if idx := strings.IndexAny(line, "#;"); idx != -1 {
line = line[:idx]
}
if strings.TrimSpace(line) == "" {
continue
}
if !strings.Contains(line, "=") {
return InvalidErrorf("realm line (%s)", line)
}
p := strings.Split(line, "=")
domain := strings.TrimSpace(strings.ToLower(p[0]))
realm := strings.TrimSpace(p[1])
d.addMapping(domain, realm)
}
return nil
}
// Add a domain to realm mapping.
func (d *DomainRealm) addMapping(domain, realm string) {
(*d)[domain] = realm
}
// Delete a domain to realm mapping.
func (d *DomainRealm) deleteMapping(domain, realm string) {
delete(*d, domain)
}
// ResolveRealm resolves the kerberos realm for the specified domain name from the domain to realm mapping.
// The most specific mapping is returned.
func (c *Config) ResolveRealm(domainName string) string {
domainName = strings.TrimSuffix(domainName, ".")
// Try to match the entire hostname first
if r, ok := c.DomainRealm[domainName]; ok {
return r
}
// Try to match all DNS domain parts
periods := strings.Count(domainName, ".") + 1
for i := 2; i <= periods; i++ {
z := strings.SplitN(domainName, ".", i)
if r, ok := c.DomainRealm["."+z[len(z)-1]]; ok {
return r
}
}
return c.LibDefaults.DefaultRealm
}
// Load the KRB5 configuration from the specified file path.
func Load(cfgPath string) (*Config, error) {
fh, err := os.Open(cfgPath)
if err != nil {
return nil, errors.New("configuration file could not be opened: " + cfgPath + " " + err.Error())
}
defer fh.Close()
scanner := bufio.NewScanner(fh)
return NewFromScanner(scanner)
}
// NewFromString creates a new Config struct from a string.
func NewFromString(s string) (*Config, error) {
reader := strings.NewReader(s)
return NewFromReader(reader)
}
// NewFromReader creates a new Config struct from an io.Reader.
func NewFromReader(r io.Reader) (*Config, error) {
scanner := bufio.NewScanner(r)
return NewFromScanner(scanner)
}
// NewFromScanner creates a new Config struct from a bufio.Scanner.
func NewFromScanner(scanner *bufio.Scanner) (*Config, error) {
c := New()
var e error
sections := make(map[int]string)
var sectionLineNum []int
var lines []string
for scanner.Scan() {
// Skip comments and blank lines
if matched, _ := regexp.MatchString(`^\s*(#|;|\n)`, scanner.Text()); matched {
continue
}
if matched, _ := regexp.MatchString(`^\s*\[libdefaults\]\s*`, scanner.Text()); matched {
sections[len(lines)] = "libdefaults"
sectionLineNum = append(sectionLineNum, len(lines))
continue
}
if matched, _ := regexp.MatchString(`^\s*\[realms\]\s*`, scanner.Text()); matched {
sections[len(lines)] = "realms"
sectionLineNum = append(sectionLineNum, len(lines))
continue
}
if matched, _ := regexp.MatchString(`^\s*\[domain_realm\]\s*`, scanner.Text()); matched {
sections[len(lines)] = "domain_realm"
sectionLineNum = append(sectionLineNum, len(lines))
continue
}
if matched, _ := regexp.MatchString(`^\s*\[.*\]\s*`, scanner.Text()); matched {
sections[len(lines)] = "unknown_section"
sectionLineNum = append(sectionLineNum, len(lines))
continue
}
lines = append(lines, scanner.Text())
}
for i, start := range sectionLineNum {
var end int
if i+1 >= len(sectionLineNum) {
end = len(lines)
} else {
end = sectionLineNum[i+1]
}
switch section := sections[start]; section {
case "libdefaults":
err := c.LibDefaults.parseLines(lines[start:end])
if err != nil {
if _, ok := err.(UnsupportedDirective); !ok {
return nil, fmt.Errorf("error processing libdefaults section: %v", err)
}
e = err
}
case "realms":
realms, err := parseRealms(lines[start:end])
if err != nil {
if _, ok := err.(UnsupportedDirective); !ok {
return nil, fmt.Errorf("error processing realms section: %v", err)
}
e = err
}
c.Realms = realms
case "domain_realm":
err := c.DomainRealm.parseLines(lines[start:end])
if err != nil {
if _, ok := err.(UnsupportedDirective); !ok {
return nil, fmt.Errorf("error processing domaain_realm section: %v", err)
}
e = err
}
}
}
return c, e
}
// Parse a space delimited list of ETypes into a list of EType numbers optionally filtering out weak ETypes.
func parseETypes(s []string, w bool) []int32 {
var eti []int32
for _, et := range s {
if !w {
var weak bool
for _, wet := range strings.Fields(WeakETypeList) {
if et == wet {
weak = true
break
}
}
if weak {
continue
}
}
i := etypeID.EtypeSupported(et)
if i != 0 {
eti = append(eti, i)
}
}
return eti
}
// Parse a time duration string in the configuration to a golang time.Duration.
func parseDuration(s string) (time.Duration, error) {
s = strings.Replace(strings.TrimSpace(s), " ", "", -1)
// handle Nd[NmNs]
if strings.Contains(s, "d") {
ds := strings.SplitN(s, "d", 2)
dn, err := strconv.ParseUint(ds[0], 10, 32)
if err != nil {
return time.Duration(0), errors.New("invalid time duration")
}
d := time.Duration(dn*24) * time.Hour
if ds[1] != "" {
dp, err := time.ParseDuration(ds[1])
if err != nil {
return time.Duration(0), errors.New("invalid time duration")
}
d = d + dp
}
return d, nil
}
// handle Nm[Ns]
d, err := time.ParseDuration(s)
if err == nil {
return d, nil
}
// handle N
v, err := strconv.ParseUint(s, 10, 32)
if err == nil && v > 0 {
return time.Duration(v) * time.Second, nil
}
// handle h:m[:s]
if strings.Contains(s, ":") {
t := strings.Split(s, ":")
if 2 > len(t) || len(t) > 3 {
return time.Duration(0), errors.New("invalid time duration value")
}
var i []int
for _, n := range t {
j, err := strconv.ParseInt(n, 10, 16)
if err != nil {
return time.Duration(0), errors.New("invalid time duration value")
}
i = append(i, int(j))
}
d := time.Duration(i[0])*time.Hour + time.Duration(i[1])*time.Minute
if len(i) == 3 {
d = d + time.Duration(i[2])*time.Second
}
return d, nil
}
return time.Duration(0), errors.New("invalid time duration value")
}
// Parse possible boolean values to golang bool.
func parseBoolean(s string) (bool, error) {
s = strings.TrimSpace(s)
v, err := strconv.ParseBool(s)
if err == nil {
return v, nil
}
switch strings.ToLower(s) {
case "yes":
return true, nil
case "y":
return true, nil
case "no":
return false, nil
case "n":
return false, nil
}
return false, errors.New("invalid boolean value")
}
// Parse array of strings but stop if an asterisk is placed at the end of a line.
func appendUntilFinal(s *[]string, value string, final *bool) {
if *final {
return
}
if last := len(value) - 1; last >= 0 && value[last] == '*' {
*final = true
value = value[:len(value)-1]
}
*s = append(*s, value)
}
// JSON return details of the config in a JSON format.
func (c *Config) JSON() (string, error) {
b, err := json.MarshalIndent(c, "", " ")
if err != nil {
return "", err
}
return string(b), nil
}

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vendor/github.com/jcmturner/gokrb5/v8/credentials/ccache.go generated vendored Normal file
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package credentials
import (
"bytes"
"encoding/binary"
"errors"
"io/ioutil"
"strings"
"time"
"unsafe"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/types"
)
const (
headerFieldTagKDCOffset = 1
)
// CCache is the file credentials cache as define here: https://web.mit.edu/kerberos/krb5-latest/doc/formats/ccache_file_format.html
type CCache struct {
Version uint8
Header header
DefaultPrincipal principal
Credentials []*Credential
Path string
}
type header struct {
length uint16
fields []headerField
}
type headerField struct {
tag uint16
length uint16
value []byte
}
// Credential cache entry principal struct.
type principal struct {
Realm string
PrincipalName types.PrincipalName
}
// Credential holds a Kerberos client's ccache credential information.
type Credential struct {
Client principal
Server principal
Key types.EncryptionKey
AuthTime time.Time
StartTime time.Time
EndTime time.Time
RenewTill time.Time
IsSKey bool
TicketFlags asn1.BitString
Addresses []types.HostAddress
AuthData []types.AuthorizationDataEntry
Ticket []byte
SecondTicket []byte
}
// LoadCCache loads a credential cache file into a CCache type.
func LoadCCache(cpath string) (*CCache, error) {
c := new(CCache)
b, err := ioutil.ReadFile(cpath)
if err != nil {
return c, err
}
err = c.Unmarshal(b)
return c, err
}
// Unmarshal a byte slice of credential cache data into CCache type.
func (c *CCache) Unmarshal(b []byte) error {
p := 0
//The first byte of the file always has the value 5
if int8(b[p]) != 5 {
return errors.New("Invalid credential cache data. First byte does not equal 5")
}
p++
//Get credential cache version
//The second byte contains the version number (1 to 4)
c.Version = b[p]
if c.Version < 1 || c.Version > 4 {
return errors.New("Invalid credential cache data. Keytab version is not within 1 to 4")
}
p++
//Version 1 or 2 of the file format uses native byte order for integer representations. Versions 3 & 4 always uses big-endian byte order
var endian binary.ByteOrder
endian = binary.BigEndian
if (c.Version == 1 || c.Version == 2) && isNativeEndianLittle() {
endian = binary.LittleEndian
}
if c.Version == 4 {
err := parseHeader(b, &p, c, &endian)
if err != nil {
return err
}
}
c.DefaultPrincipal = parsePrincipal(b, &p, c, &endian)
for p < len(b) {
cred, err := parseCredential(b, &p, c, &endian)
if err != nil {
return err
}
c.Credentials = append(c.Credentials, cred)
}
return nil
}
func parseHeader(b []byte, p *int, c *CCache, e *binary.ByteOrder) error {
if c.Version != 4 {
return errors.New("Credentials cache version is not 4 so there is no header to parse.")
}
h := header{}
h.length = uint16(readInt16(b, p, e))
for *p <= int(h.length) {
f := headerField{}
f.tag = uint16(readInt16(b, p, e))
f.length = uint16(readInt16(b, p, e))
f.value = b[*p : *p+int(f.length)]
*p += int(f.length)
if !f.valid() {
return errors.New("Invalid credential cache header found")
}
h.fields = append(h.fields, f)
}
c.Header = h
return nil
}
// Parse the Keytab bytes of a principal into a Keytab entry's principal.
func parsePrincipal(b []byte, p *int, c *CCache, e *binary.ByteOrder) (princ principal) {
if c.Version != 1 {
//Name Type is omitted in version 1
princ.PrincipalName.NameType = readInt32(b, p, e)
}
nc := int(readInt32(b, p, e))
if c.Version == 1 {
//In version 1 the number of components includes the realm. Minus 1 to make consistent with version 2
nc--
}
lenRealm := readInt32(b, p, e)
princ.Realm = string(readBytes(b, p, int(lenRealm), e))
for i := 0; i < nc; i++ {
l := readInt32(b, p, e)
princ.PrincipalName.NameString = append(princ.PrincipalName.NameString, string(readBytes(b, p, int(l), e)))
}
return princ
}
func parseCredential(b []byte, p *int, c *CCache, e *binary.ByteOrder) (cred *Credential, err error) {
cred = new(Credential)
cred.Client = parsePrincipal(b, p, c, e)
cred.Server = parsePrincipal(b, p, c, e)
key := types.EncryptionKey{}
key.KeyType = int32(readInt16(b, p, e))
if c.Version == 3 {
//repeated twice in version 3
key.KeyType = int32(readInt16(b, p, e))
}
key.KeyValue = readData(b, p, e)
cred.Key = key
cred.AuthTime = readTimestamp(b, p, e)
cred.StartTime = readTimestamp(b, p, e)
cred.EndTime = readTimestamp(b, p, e)
cred.RenewTill = readTimestamp(b, p, e)
if ik := readInt8(b, p, e); ik == 0 {
cred.IsSKey = false
} else {
cred.IsSKey = true
}
cred.TicketFlags = types.NewKrbFlags()
cred.TicketFlags.Bytes = readBytes(b, p, 4, e)
l := int(readInt32(b, p, e))
cred.Addresses = make([]types.HostAddress, l, l)
for i := range cred.Addresses {
cred.Addresses[i] = readAddress(b, p, e)
}
l = int(readInt32(b, p, e))
cred.AuthData = make([]types.AuthorizationDataEntry, l, l)
for i := range cred.AuthData {
cred.AuthData[i] = readAuthDataEntry(b, p, e)
}
cred.Ticket = readData(b, p, e)
cred.SecondTicket = readData(b, p, e)
return
}
// GetClientPrincipalName returns a PrincipalName type for the client the credentials cache is for.
func (c *CCache) GetClientPrincipalName() types.PrincipalName {
return c.DefaultPrincipal.PrincipalName
}
// GetClientRealm returns the reals of the client the credentials cache is for.
func (c *CCache) GetClientRealm() string {
return c.DefaultPrincipal.Realm
}
// GetClientCredentials returns a Credentials object representing the client of the credentials cache.
func (c *CCache) GetClientCredentials() *Credentials {
return &Credentials{
username: c.DefaultPrincipal.PrincipalName.PrincipalNameString(),
realm: c.GetClientRealm(),
cname: c.DefaultPrincipal.PrincipalName,
}
}
// Contains tests if the cache contains a credential for the provided server PrincipalName
func (c *CCache) Contains(p types.PrincipalName) bool {
for _, cred := range c.Credentials {
if cred.Server.PrincipalName.Equal(p) {
return true
}
}
return false
}
// GetEntry returns a specific credential for the PrincipalName provided.
func (c *CCache) GetEntry(p types.PrincipalName) (*Credential, bool) {
cred := new(Credential)
var found bool
for i := range c.Credentials {
if c.Credentials[i].Server.PrincipalName.Equal(p) {
cred = c.Credentials[i]
found = true
break
}
}
if !found {
return cred, false
}
return cred, true
}
// GetEntries filters out configuration entries an returns a slice of credentials.
func (c *CCache) GetEntries() []*Credential {
creds := make([]*Credential, 0)
for _, cred := range c.Credentials {
// Filter out configuration entries
if strings.HasPrefix(cred.Server.Realm, "X-CACHECONF") {
continue
}
creds = append(creds, cred)
}
return creds
}
func (h *headerField) valid() bool {
// See https://web.mit.edu/kerberos/krb5-latest/doc/formats/ccache_file_format.html - Header format
switch h.tag {
case headerFieldTagKDCOffset:
if h.length != 8 || len(h.value) != 8 {
return false
}
return true
}
return false
}
func readData(b []byte, p *int, e *binary.ByteOrder) []byte {
l := readInt32(b, p, e)
return readBytes(b, p, int(l), e)
}
func readAddress(b []byte, p *int, e *binary.ByteOrder) types.HostAddress {
a := types.HostAddress{}
a.AddrType = int32(readInt16(b, p, e))
a.Address = readData(b, p, e)
return a
}
func readAuthDataEntry(b []byte, p *int, e *binary.ByteOrder) types.AuthorizationDataEntry {
a := types.AuthorizationDataEntry{}
a.ADType = int32(readInt16(b, p, e))
a.ADData = readData(b, p, e)
return a
}
// Read bytes representing a timestamp.
func readTimestamp(b []byte, p *int, e *binary.ByteOrder) time.Time {
return time.Unix(int64(readInt32(b, p, e)), 0)
}
// Read bytes representing an eight bit integer.
func readInt8(b []byte, p *int, e *binary.ByteOrder) (i int8) {
buf := bytes.NewBuffer(b[*p : *p+1])
binary.Read(buf, *e, &i)
*p++
return
}
// Read bytes representing a sixteen bit integer.
func readInt16(b []byte, p *int, e *binary.ByteOrder) (i int16) {
buf := bytes.NewBuffer(b[*p : *p+2])
binary.Read(buf, *e, &i)
*p += 2
return
}
// Read bytes representing a thirty two bit integer.
func readInt32(b []byte, p *int, e *binary.ByteOrder) (i int32) {
buf := bytes.NewBuffer(b[*p : *p+4])
binary.Read(buf, *e, &i)
*p += 4
return
}
func readBytes(b []byte, p *int, s int, e *binary.ByteOrder) []byte {
buf := bytes.NewBuffer(b[*p : *p+s])
r := make([]byte, s)
binary.Read(buf, *e, &r)
*p += s
return r
}
func isNativeEndianLittle() bool {
var x = 0x012345678
var p = unsafe.Pointer(&x)
var bp = (*[4]byte)(p)
var endian bool
if 0x01 == bp[0] {
endian = false
} else if (0x78 & 0xff) == (bp[0] & 0xff) {
endian = true
} else {
// Default to big endian
endian = false
}
return endian
}

405
vendor/github.com/jcmturner/gokrb5/v8/credentials/credentials.go generated vendored Normal file
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@ -0,0 +1,405 @@
// Package credentials provides credentials management for Kerberos 5 authentication.
package credentials
import (
"bytes"
"encoding/gob"
"encoding/json"
"time"
"github.com/hashicorp/go-uuid"
"github.com/jcmturner/gokrb5/v8/iana/nametype"
"github.com/jcmturner/gokrb5/v8/keytab"
"github.com/jcmturner/gokrb5/v8/types"
)
const (
// AttributeKeyADCredentials assigned number for AD credentials.
AttributeKeyADCredentials = "gokrb5AttributeKeyADCredentials"
)
// Credentials struct for a user.
// Contains either a keytab, password or both.
// Keytabs are used over passwords if both are defined.
type Credentials struct {
username string
displayName string
realm string
cname types.PrincipalName
keytab *keytab.Keytab
password string
attributes map[string]interface{}
validUntil time.Time
authenticated bool
human bool
authTime time.Time
groupMembership map[string]bool
sessionID string
}
// marshalCredentials is used to enable marshaling and unmarshaling of credentials
// without having exported fields on the Credentials struct
type marshalCredentials struct {
Username string
DisplayName string
Realm string
CName types.PrincipalName `json:"-"`
Keytab bool
Password bool
Attributes map[string]interface{} `json:"-"`
ValidUntil time.Time
Authenticated bool
Human bool
AuthTime time.Time
GroupMembership map[string]bool `json:"-"`
SessionID string
}
// ADCredentials contains information obtained from the PAC.
type ADCredentials struct {
EffectiveName string
FullName string
UserID int
PrimaryGroupID int
LogOnTime time.Time
LogOffTime time.Time
PasswordLastSet time.Time
GroupMembershipSIDs []string
LogonDomainName string
LogonDomainID string
LogonServer string
}
// New creates a new Credentials instance.
func New(username string, realm string) *Credentials {
uid, err := uuid.GenerateUUID()
if err != nil {
uid = "00unique-sess-ions-uuid-unavailable0"
}
return &Credentials{
username: username,
displayName: username,
realm: realm,
cname: types.NewPrincipalName(nametype.KRB_NT_PRINCIPAL, username),
keytab: keytab.New(),
attributes: make(map[string]interface{}),
groupMembership: make(map[string]bool),
sessionID: uid,
human: true,
}
}
// NewFromPrincipalName creates a new Credentials instance with the user details provides as a PrincipalName type.
func NewFromPrincipalName(cname types.PrincipalName, realm string) *Credentials {
c := New(cname.PrincipalNameString(), realm)
c.cname = cname
return c
}
// WithKeytab sets the Keytab in the Credentials struct.
func (c *Credentials) WithKeytab(kt *keytab.Keytab) *Credentials {
c.keytab = kt
c.password = ""
return c
}
// Keytab returns the credential's Keytab.
func (c *Credentials) Keytab() *keytab.Keytab {
return c.keytab
}
// HasKeytab queries if the Credentials has a keytab defined.
func (c *Credentials) HasKeytab() bool {
if c.keytab != nil && len(c.keytab.Entries) > 0 {
return true
}
return false
}
// WithPassword sets the password in the Credentials struct.
func (c *Credentials) WithPassword(password string) *Credentials {
c.password = password
c.keytab = keytab.New() // clear any keytab
return c
}
// Password returns the credential's password.
func (c *Credentials) Password() string {
return c.password
}
// HasPassword queries if the Credentials has a password defined.
func (c *Credentials) HasPassword() bool {
if c.password != "" {
return true
}
return false
}
// SetValidUntil sets the expiry time of the credentials
func (c *Credentials) SetValidUntil(t time.Time) {
c.validUntil = t
}
// SetADCredentials adds ADCredentials attributes to the credentials
func (c *Credentials) SetADCredentials(a ADCredentials) {
c.SetAttribute(AttributeKeyADCredentials, a)
if a.FullName != "" {
c.SetDisplayName(a.FullName)
}
if a.EffectiveName != "" {
c.SetUserName(a.EffectiveName)
}
for i := range a.GroupMembershipSIDs {
c.AddAuthzAttribute(a.GroupMembershipSIDs[i])
}
}
// GetADCredentials returns ADCredentials attributes sorted in the credential
func (c *Credentials) GetADCredentials() ADCredentials {
if a, ok := c.attributes[AttributeKeyADCredentials].(ADCredentials); ok {
return a
}
return ADCredentials{}
}
// Methods to implement goidentity.Identity interface
// UserName returns the credential's username.
func (c *Credentials) UserName() string {
return c.username
}
// SetUserName sets the username value on the credential.
func (c *Credentials) SetUserName(s string) {
c.username = s
}
// CName returns the credential's client principal name.
func (c *Credentials) CName() types.PrincipalName {
return c.cname
}
// SetCName sets the client principal name on the credential.
func (c *Credentials) SetCName(pn types.PrincipalName) {
c.cname = pn
}
// Domain returns the credential's domain.
func (c *Credentials) Domain() string {
return c.realm
}
// SetDomain sets the domain value on the credential.
func (c *Credentials) SetDomain(s string) {
c.realm = s
}
// Realm returns the credential's realm. Same as the domain.
func (c *Credentials) Realm() string {
return c.Domain()
}
// SetRealm sets the realm value on the credential. Same as the domain
func (c *Credentials) SetRealm(s string) {
c.SetDomain(s)
}
// DisplayName returns the credential's display name.
func (c *Credentials) DisplayName() string {
return c.displayName
}
// SetDisplayName sets the display name value on the credential.
func (c *Credentials) SetDisplayName(s string) {
c.displayName = s
}
// Human returns if the credential represents a human or not.
func (c *Credentials) Human() bool {
return c.human
}
// SetHuman sets the credential as human.
func (c *Credentials) SetHuman(b bool) {
c.human = b
}
// AuthTime returns the time the credential was authenticated.
func (c *Credentials) AuthTime() time.Time {
return c.authTime
}
// SetAuthTime sets the time the credential was authenticated.
func (c *Credentials) SetAuthTime(t time.Time) {
c.authTime = t
}
// AuthzAttributes returns the credentials authorizing attributes.
func (c *Credentials) AuthzAttributes() []string {
s := make([]string, len(c.groupMembership))
i := 0
for a := range c.groupMembership {
s[i] = a
i++
}
return s
}
// Authenticated indicates if the credential has been successfully authenticated or not.
func (c *Credentials) Authenticated() bool {
return c.authenticated
}
// SetAuthenticated sets the credential as having been successfully authenticated.
func (c *Credentials) SetAuthenticated(b bool) {
c.authenticated = b
}
// AddAuthzAttribute adds an authorization attribute to the credential.
func (c *Credentials) AddAuthzAttribute(a string) {
c.groupMembership[a] = true
}
// RemoveAuthzAttribute removes an authorization attribute from the credential.
func (c *Credentials) RemoveAuthzAttribute(a string) {
if _, ok := c.groupMembership[a]; !ok {
return
}
delete(c.groupMembership, a)
}
// EnableAuthzAttribute toggles an authorization attribute to an enabled state on the credential.
func (c *Credentials) EnableAuthzAttribute(a string) {
if enabled, ok := c.groupMembership[a]; ok && !enabled {
c.groupMembership[a] = true
}
}
// DisableAuthzAttribute toggles an authorization attribute to a disabled state on the credential.
func (c *Credentials) DisableAuthzAttribute(a string) {
if enabled, ok := c.groupMembership[a]; ok && enabled {
c.groupMembership[a] = false
}
}
// Authorized indicates if the credential has the specified authorizing attribute.
func (c *Credentials) Authorized(a string) bool {
if enabled, ok := c.groupMembership[a]; ok && enabled {
return true
}
return false
}
// SessionID returns the credential's session ID.
func (c *Credentials) SessionID() string {
return c.sessionID
}
// Expired indicates if the credential has expired.
func (c *Credentials) Expired() bool {
if !c.validUntil.IsZero() && time.Now().UTC().After(c.validUntil) {
return true
}
return false
}
// ValidUntil returns the credential's valid until date
func (c *Credentials) ValidUntil() time.Time {
return c.validUntil
}
// Attributes returns the Credentials' attributes map.
func (c *Credentials) Attributes() map[string]interface{} {
return c.attributes
}
// SetAttribute sets the value of an attribute.
func (c *Credentials) SetAttribute(k string, v interface{}) {
c.attributes[k] = v
}
// SetAttributes replaces the attributes map with the one provided.
func (c *Credentials) SetAttributes(a map[string]interface{}) {
c.attributes = a
}
// RemoveAttribute deletes an attribute from the attribute map that has the key provided.
func (c *Credentials) RemoveAttribute(k string) {
delete(c.attributes, k)
}
// Marshal the Credentials into a byte slice
func (c *Credentials) Marshal() ([]byte, error) {
gob.Register(map[string]interface{}{})
gob.Register(ADCredentials{})
buf := new(bytes.Buffer)
enc := gob.NewEncoder(buf)
mc := marshalCredentials{
Username: c.username,
DisplayName: c.displayName,
Realm: c.realm,
CName: c.cname,
Keytab: c.HasKeytab(),
Password: c.HasPassword(),
Attributes: c.attributes,
ValidUntil: c.validUntil,
Authenticated: c.authenticated,
Human: c.human,
AuthTime: c.authTime,
GroupMembership: c.groupMembership,
SessionID: c.sessionID,
}
err := enc.Encode(&mc)
if err != nil {
return []byte{}, err
}
return buf.Bytes(), nil
}
// Unmarshal a byte slice into Credentials
func (c *Credentials) Unmarshal(b []byte) error {
gob.Register(map[string]interface{}{})
gob.Register(ADCredentials{})
mc := new(marshalCredentials)
buf := bytes.NewBuffer(b)
dec := gob.NewDecoder(buf)
err := dec.Decode(mc)
if err != nil {
return err
}
c.username = mc.Username
c.displayName = mc.DisplayName
c.realm = mc.Realm
c.cname = mc.CName
c.attributes = mc.Attributes
c.validUntil = mc.ValidUntil
c.authenticated = mc.Authenticated
c.human = mc.Human
c.authTime = mc.AuthTime
c.groupMembership = mc.GroupMembership
c.sessionID = mc.SessionID
return nil
}
// JSON return details of the Credentials in a JSON format.
func (c *Credentials) JSON() (string, error) {
mc := marshalCredentials{
Username: c.username,
DisplayName: c.displayName,
Realm: c.realm,
CName: c.cname,
Keytab: c.HasKeytab(),
Password: c.HasPassword(),
ValidUntil: c.validUntil,
Authenticated: c.authenticated,
Human: c.human,
AuthTime: c.authTime,
SessionID: c.sessionID,
}
b, err := json.MarshalIndent(mc, "", " ")
if err != nil {
return "", err
}
return string(b), nil
}

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vendor/github.com/jcmturner/gokrb5/v8/crypto/aes128-cts-hmac-sha1-96.go generated vendored Normal file
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package crypto
import (
"crypto/aes"
"crypto/hmac"
"crypto/sha1"
"hash"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/rfc3961"
"github.com/jcmturner/gokrb5/v8/crypto/rfc3962"
"github.com/jcmturner/gokrb5/v8/iana/chksumtype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
)
// RFC 3962
// Aes128CtsHmacSha96 implements Kerberos encryption type aes128-cts-hmac-sha1-96
type Aes128CtsHmacSha96 struct {
}
// GetETypeID returns the EType ID number.
func (e Aes128CtsHmacSha96) GetETypeID() int32 {
return etypeID.AES128_CTS_HMAC_SHA1_96
}
// GetHashID returns the checksum type ID number.
func (e Aes128CtsHmacSha96) GetHashID() int32 {
return chksumtype.HMAC_SHA1_96_AES128
}
// GetKeyByteSize returns the number of bytes for key of this etype.
func (e Aes128CtsHmacSha96) GetKeyByteSize() int {
return 128 / 8
}
// GetKeySeedBitLength returns the number of bits for the seed for key generation.
func (e Aes128CtsHmacSha96) GetKeySeedBitLength() int {
return e.GetKeyByteSize() * 8
}
// GetHashFunc returns the hash function for this etype.
func (e Aes128CtsHmacSha96) GetHashFunc() func() hash.Hash {
return sha1.New
}
// GetMessageBlockByteSize returns the block size for the etype's messages.
func (e Aes128CtsHmacSha96) GetMessageBlockByteSize() int {
return 1
}
// GetDefaultStringToKeyParams returns the default key derivation parameters in string form.
func (e Aes128CtsHmacSha96) GetDefaultStringToKeyParams() string {
return "00001000"
}
// GetConfounderByteSize returns the byte count for confounder to be used during cryptographic operations.
func (e Aes128CtsHmacSha96) GetConfounderByteSize() int {
return aes.BlockSize
}
// GetHMACBitLength returns the bit count size of the integrity hash.
func (e Aes128CtsHmacSha96) GetHMACBitLength() int {
return 96
}
// GetCypherBlockBitLength returns the bit count size of the cypher block.
func (e Aes128CtsHmacSha96) GetCypherBlockBitLength() int {
return aes.BlockSize * 8
}
// StringToKey returns a key derived from the string provided.
func (e Aes128CtsHmacSha96) StringToKey(secret string, salt string, s2kparams string) ([]byte, error) {
return rfc3962.StringToKey(secret, salt, s2kparams, e)
}
// RandomToKey returns a key from the bytes provided.
func (e Aes128CtsHmacSha96) RandomToKey(b []byte) []byte {
return rfc3961.RandomToKey(b)
}
// EncryptData encrypts the data provided.
func (e Aes128CtsHmacSha96) EncryptData(key, data []byte) ([]byte, []byte, error) {
return rfc3962.EncryptData(key, data, e)
}
// EncryptMessage encrypts the message provided and concatenates it with the integrity hash to create an encrypted message.
func (e Aes128CtsHmacSha96) EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error) {
return rfc3962.EncryptMessage(key, message, usage, e)
}
// DecryptData decrypts the data provided.
func (e Aes128CtsHmacSha96) DecryptData(key, data []byte) ([]byte, error) {
return rfc3962.DecryptData(key, data, e)
}
// DecryptMessage decrypts the message provided and verifies the integrity of the message.
func (e Aes128CtsHmacSha96) DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error) {
return rfc3962.DecryptMessage(key, ciphertext, usage, e)
}
// DeriveKey derives a key from the protocol key based on the usage value.
func (e Aes128CtsHmacSha96) DeriveKey(protocolKey, usage []byte) ([]byte, error) {
return rfc3961.DeriveKey(protocolKey, usage, e)
}
// DeriveRandom generates data needed for key generation.
func (e Aes128CtsHmacSha96) DeriveRandom(protocolKey, usage []byte) ([]byte, error) {
return rfc3961.DeriveRandom(protocolKey, usage, e)
}
// VerifyIntegrity checks the integrity of the plaintext message.
func (e Aes128CtsHmacSha96) VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool {
return rfc3961.VerifyIntegrity(protocolKey, ct, pt, usage, e)
}
// GetChecksumHash returns a keyed checksum hash of the bytes provided.
func (e Aes128CtsHmacSha96) GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error) {
return common.GetHash(data, protocolKey, common.GetUsageKc(usage), e)
}
// VerifyChecksum compares the checksum of the message bytes is the same as the checksum provided.
func (e Aes128CtsHmacSha96) VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool {
c, err := e.GetChecksumHash(protocolKey, data, usage)
if err != nil {
return false
}
return hmac.Equal(chksum, c)
}

132
vendor/github.com/jcmturner/gokrb5/v8/crypto/aes128-cts-hmac-sha256-128.go generated vendored Normal file
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package crypto
import (
"crypto/aes"
"crypto/hmac"
"crypto/sha256"
"hash"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/rfc8009"
"github.com/jcmturner/gokrb5/v8/iana/chksumtype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
)
// RFC https://tools.ietf.org/html/rfc8009
// Aes128CtsHmacSha256128 implements Kerberos encryption type aes128-cts-hmac-sha256-128
type Aes128CtsHmacSha256128 struct {
}
// GetETypeID returns the EType ID number.
func (e Aes128CtsHmacSha256128) GetETypeID() int32 {
return etypeID.AES128_CTS_HMAC_SHA256_128
}
// GetHashID returns the checksum type ID number.
func (e Aes128CtsHmacSha256128) GetHashID() int32 {
return chksumtype.HMAC_SHA256_128_AES128
}
// GetKeyByteSize returns the number of bytes for key of this etype.
func (e Aes128CtsHmacSha256128) GetKeyByteSize() int {
return 128 / 8
}
// GetKeySeedBitLength returns the number of bits for the seed for key generation.
func (e Aes128CtsHmacSha256128) GetKeySeedBitLength() int {
return e.GetKeyByteSize() * 8
}
// GetHashFunc returns the hash function for this etype.
func (e Aes128CtsHmacSha256128) GetHashFunc() func() hash.Hash {
return sha256.New
}
// GetMessageBlockByteSize returns the block size for the etype's messages.
func (e Aes128CtsHmacSha256128) GetMessageBlockByteSize() int {
return 1
}
// GetDefaultStringToKeyParams returns the default key derivation parameters in string form.
func (e Aes128CtsHmacSha256128) GetDefaultStringToKeyParams() string {
return "00008000"
}
// GetConfounderByteSize returns the byte count for confounder to be used during cryptographic operations.
func (e Aes128CtsHmacSha256128) GetConfounderByteSize() int {
return aes.BlockSize
}
// GetHMACBitLength returns the bit count size of the integrity hash.
func (e Aes128CtsHmacSha256128) GetHMACBitLength() int {
return 128
}
// GetCypherBlockBitLength returns the bit count size of the cypher block.
func (e Aes128CtsHmacSha256128) GetCypherBlockBitLength() int {
return aes.BlockSize * 8
}
// StringToKey returns a key derived from the string provided.
func (e Aes128CtsHmacSha256128) StringToKey(secret string, salt string, s2kparams string) ([]byte, error) {
saltp := rfc8009.GetSaltP(salt, "aes128-cts-hmac-sha256-128")
return rfc8009.StringToKey(secret, saltp, s2kparams, e)
}
// RandomToKey returns a key from the bytes provided.
func (e Aes128CtsHmacSha256128) RandomToKey(b []byte) []byte {
return rfc8009.RandomToKey(b)
}
// EncryptData encrypts the data provided.
func (e Aes128CtsHmacSha256128) EncryptData(key, data []byte) ([]byte, []byte, error) {
return rfc8009.EncryptData(key, data, e)
}
// EncryptMessage encrypts the message provided and concatenates it with the integrity hash to create an encrypted message.
func (e Aes128CtsHmacSha256128) EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error) {
return rfc8009.EncryptMessage(key, message, usage, e)
}
// DecryptData decrypts the data provided.
func (e Aes128CtsHmacSha256128) DecryptData(key, data []byte) ([]byte, error) {
return rfc8009.DecryptData(key, data, e)
}
// DecryptMessage decrypts the message provided and verifies the integrity of the message.
func (e Aes128CtsHmacSha256128) DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error) {
return rfc8009.DecryptMessage(key, ciphertext, usage, e)
}
// DeriveKey derives a key from the protocol key based on the usage value.
func (e Aes128CtsHmacSha256128) DeriveKey(protocolKey, usage []byte) ([]byte, error) {
return rfc8009.DeriveKey(protocolKey, usage, e), nil
}
// DeriveRandom generates data needed for key generation.
func (e Aes128CtsHmacSha256128) DeriveRandom(protocolKey, usage []byte) ([]byte, error) {
return rfc8009.DeriveRandom(protocolKey, usage, e)
}
// VerifyIntegrity checks the integrity of the ciphertext message.
// As the hash is calculated over the iv concatenated with the AES cipher output not the plaintext the pt value to this
// interface method is not use. Pass any []byte.
func (e Aes128CtsHmacSha256128) VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool {
// We don't need ib just there for the interface
return rfc8009.VerifyIntegrity(protocolKey, ct, usage, e)
}
// GetChecksumHash returns a keyed checksum hash of the bytes provided.
func (e Aes128CtsHmacSha256128) GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error) {
return common.GetHash(data, protocolKey, common.GetUsageKc(usage), e)
}
// VerifyChecksum compares the checksum of the message bytes is the same as the checksum provided.
func (e Aes128CtsHmacSha256128) VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool {
c, err := e.GetChecksumHash(protocolKey, data, usage)
if err != nil {
return false
}
return hmac.Equal(chksum, c)
}

129
vendor/github.com/jcmturner/gokrb5/v8/crypto/aes256-cts-hmac-sha1-96.go generated vendored Normal file
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package crypto
import (
"crypto/aes"
"crypto/hmac"
"crypto/sha1"
"hash"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/rfc3961"
"github.com/jcmturner/gokrb5/v8/crypto/rfc3962"
"github.com/jcmturner/gokrb5/v8/iana/chksumtype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
)
// RFC 3962
// Aes256CtsHmacSha96 implements Kerberos encryption type aes256-cts-hmac-sha1-96
type Aes256CtsHmacSha96 struct {
}
// GetETypeID returns the EType ID number.
func (e Aes256CtsHmacSha96) GetETypeID() int32 {
return etypeID.AES256_CTS_HMAC_SHA1_96
}
// GetHashID returns the checksum type ID number.
func (e Aes256CtsHmacSha96) GetHashID() int32 {
return chksumtype.HMAC_SHA1_96_AES256
}
// GetKeyByteSize returns the number of bytes for key of this etype.
func (e Aes256CtsHmacSha96) GetKeyByteSize() int {
return 256 / 8
}
// GetKeySeedBitLength returns the number of bits for the seed for key generation.
func (e Aes256CtsHmacSha96) GetKeySeedBitLength() int {
return e.GetKeyByteSize() * 8
}
// GetHashFunc returns the hash function for this etype.
func (e Aes256CtsHmacSha96) GetHashFunc() func() hash.Hash {
return sha1.New
}
// GetMessageBlockByteSize returns the block size for the etype's messages.
func (e Aes256CtsHmacSha96) GetMessageBlockByteSize() int {
return 1
}
// GetDefaultStringToKeyParams returns the default key derivation parameters in string form.
func (e Aes256CtsHmacSha96) GetDefaultStringToKeyParams() string {
return "00001000"
}
// GetConfounderByteSize returns the byte count for confounder to be used during cryptographic operations.
func (e Aes256CtsHmacSha96) GetConfounderByteSize() int {
return aes.BlockSize
}
// GetHMACBitLength returns the bit count size of the integrity hash.
func (e Aes256CtsHmacSha96) GetHMACBitLength() int {
return 96
}
// GetCypherBlockBitLength returns the bit count size of the cypher block.
func (e Aes256CtsHmacSha96) GetCypherBlockBitLength() int {
return aes.BlockSize * 8
}
// StringToKey returns a key derived from the string provided.
func (e Aes256CtsHmacSha96) StringToKey(secret string, salt string, s2kparams string) ([]byte, error) {
return rfc3962.StringToKey(secret, salt, s2kparams, e)
}
// RandomToKey returns a key from the bytes provided.
func (e Aes256CtsHmacSha96) RandomToKey(b []byte) []byte {
return rfc3961.RandomToKey(b)
}
// EncryptData encrypts the data provided.
func (e Aes256CtsHmacSha96) EncryptData(key, data []byte) ([]byte, []byte, error) {
return rfc3962.EncryptData(key, data, e)
}
// EncryptMessage encrypts the message provided and concatenates it with the integrity hash to create an encrypted message.
func (e Aes256CtsHmacSha96) EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error) {
return rfc3962.EncryptMessage(key, message, usage, e)
}
// DecryptData decrypts the data provided.
func (e Aes256CtsHmacSha96) DecryptData(key, data []byte) ([]byte, error) {
return rfc3962.DecryptData(key, data, e)
}
// DecryptMessage decrypts the message provided and verifies the integrity of the message.
func (e Aes256CtsHmacSha96) DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error) {
return rfc3962.DecryptMessage(key, ciphertext, usage, e)
}
// DeriveKey derives a key from the protocol key based on the usage value.
func (e Aes256CtsHmacSha96) DeriveKey(protocolKey, usage []byte) ([]byte, error) {
return rfc3961.DeriveKey(protocolKey, usage, e)
}
// DeriveRandom generates data needed for key generation.
func (e Aes256CtsHmacSha96) DeriveRandom(protocolKey, usage []byte) ([]byte, error) {
return rfc3961.DeriveRandom(protocolKey, usage, e)
}
// VerifyIntegrity checks the integrity of the plaintext message.
func (e Aes256CtsHmacSha96) VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool {
return rfc3961.VerifyIntegrity(protocolKey, ct, pt, usage, e)
}
// GetChecksumHash returns a keyed checksum hash of the bytes provided.
func (e Aes256CtsHmacSha96) GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error) {
return common.GetHash(data, protocolKey, common.GetUsageKc(usage), e)
}
// VerifyChecksum compares the checksum of the message bytes is the same as the checksum provided.
func (e Aes256CtsHmacSha96) VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool {
c, err := e.GetChecksumHash(protocolKey, data, usage)
if err != nil {
return false
}
return hmac.Equal(chksum, c)
}

132
vendor/github.com/jcmturner/gokrb5/v8/crypto/aes256-cts-hmac-sha384-192.go generated vendored Normal file
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package crypto
import (
"crypto/aes"
"crypto/hmac"
"crypto/sha512"
"hash"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/rfc8009"
"github.com/jcmturner/gokrb5/v8/iana/chksumtype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
)
// RFC https://tools.ietf.org/html/rfc8009
// Aes256CtsHmacSha384192 implements Kerberos encryption type aes256-cts-hmac-sha384-192
type Aes256CtsHmacSha384192 struct {
}
// GetETypeID returns the EType ID number.
func (e Aes256CtsHmacSha384192) GetETypeID() int32 {
return etypeID.AES256_CTS_HMAC_SHA384_192
}
// GetHashID returns the checksum type ID number.
func (e Aes256CtsHmacSha384192) GetHashID() int32 {
return chksumtype.HMAC_SHA384_192_AES256
}
// GetKeyByteSize returns the number of bytes for key of this etype.
func (e Aes256CtsHmacSha384192) GetKeyByteSize() int {
return 192 / 8
}
// GetKeySeedBitLength returns the number of bits for the seed for key generation.
func (e Aes256CtsHmacSha384192) GetKeySeedBitLength() int {
return e.GetKeyByteSize() * 8
}
// GetHashFunc returns the hash function for this etype.
func (e Aes256CtsHmacSha384192) GetHashFunc() func() hash.Hash {
return sha512.New384
}
// GetMessageBlockByteSize returns the block size for the etype's messages.
func (e Aes256CtsHmacSha384192) GetMessageBlockByteSize() int {
return 1
}
// GetDefaultStringToKeyParams returns the default key derivation parameters in string form.
func (e Aes256CtsHmacSha384192) GetDefaultStringToKeyParams() string {
return "00008000"
}
// GetConfounderByteSize returns the byte count for confounder to be used during cryptographic operations.
func (e Aes256CtsHmacSha384192) GetConfounderByteSize() int {
return aes.BlockSize
}
// GetHMACBitLength returns the bit count size of the integrity hash.
func (e Aes256CtsHmacSha384192) GetHMACBitLength() int {
return 192
}
// GetCypherBlockBitLength returns the bit count size of the cypher block.
func (e Aes256CtsHmacSha384192) GetCypherBlockBitLength() int {
return aes.BlockSize * 8
}
// StringToKey returns a key derived from the string provided.
func (e Aes256CtsHmacSha384192) StringToKey(secret string, salt string, s2kparams string) ([]byte, error) {
saltp := rfc8009.GetSaltP(salt, "aes256-cts-hmac-sha384-192")
return rfc8009.StringToKey(secret, saltp, s2kparams, e)
}
// RandomToKey returns a key from the bytes provided.
func (e Aes256CtsHmacSha384192) RandomToKey(b []byte) []byte {
return rfc8009.RandomToKey(b)
}
// EncryptData encrypts the data provided.
func (e Aes256CtsHmacSha384192) EncryptData(key, data []byte) ([]byte, []byte, error) {
return rfc8009.EncryptData(key, data, e)
}
// EncryptMessage encrypts the message provided and concatenates it with the integrity hash to create an encrypted message.
func (e Aes256CtsHmacSha384192) EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error) {
return rfc8009.EncryptMessage(key, message, usage, e)
}
// DecryptData decrypts the data provided.
func (e Aes256CtsHmacSha384192) DecryptData(key, data []byte) ([]byte, error) {
return rfc8009.DecryptData(key, data, e)
}
// DecryptMessage decrypts the message provided and verifies the integrity of the message.
func (e Aes256CtsHmacSha384192) DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error) {
return rfc8009.DecryptMessage(key, ciphertext, usage, e)
}
// DeriveKey derives a key from the protocol key based on the usage value.
func (e Aes256CtsHmacSha384192) DeriveKey(protocolKey, usage []byte) ([]byte, error) {
return rfc8009.DeriveKey(protocolKey, usage, e), nil
}
// DeriveRandom generates data needed for key generation.
func (e Aes256CtsHmacSha384192) DeriveRandom(protocolKey, usage []byte) ([]byte, error) {
return rfc8009.DeriveRandom(protocolKey, usage, e)
}
// VerifyIntegrity checks the integrity of the ciphertext message.
// As the hash is calculated over the iv concatenated with the AES cipher output not the plaintext the pt value to this
// interface method is not use. Pass any []byte.
func (e Aes256CtsHmacSha384192) VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool {
// We don't need ib just there for the interface
return rfc8009.VerifyIntegrity(protocolKey, ct, usage, e)
}
// GetChecksumHash returns a keyed checksum hash of the bytes provided.
func (e Aes256CtsHmacSha384192) GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error) {
return common.GetHash(data, protocolKey, common.GetUsageKc(usage), e)
}
// VerifyChecksum compares the checksum of the message bytes is the same as the checksum provided.
func (e Aes256CtsHmacSha384192) VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool {
c, err := e.GetChecksumHash(protocolKey, data, usage)
if err != nil {
return false
}
return hmac.Equal(chksum, c)
}

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vendor/github.com/jcmturner/gokrb5/v8/crypto/common/common.go generated vendored Normal file
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// Package common provides encryption methods common across encryption types
package common
import (
"bytes"
"crypto/hmac"
"encoding/binary"
"encoding/hex"
"errors"
"fmt"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
)
// ZeroPad pads bytes with zeros to nearest multiple of message size m.
func ZeroPad(b []byte, m int) ([]byte, error) {
if m <= 0 {
return nil, errors.New("Invalid message block size when padding")
}
if b == nil || len(b) == 0 {
return nil, errors.New("Data not valid to pad: Zero size")
}
if l := len(b) % m; l != 0 {
n := m - l
z := make([]byte, n)
b = append(b, z...)
}
return b, nil
}
// PKCS7Pad pads bytes according to RFC 2315 to nearest multiple of message size m.
func PKCS7Pad(b []byte, m int) ([]byte, error) {
if m <= 0 {
return nil, errors.New("Invalid message block size when padding")
}
if b == nil || len(b) == 0 {
return nil, errors.New("Data not valid to pad: Zero size")
}
n := m - (len(b) % m)
pb := make([]byte, len(b)+n)
copy(pb, b)
copy(pb[len(b):], bytes.Repeat([]byte{byte(n)}, n))
return pb, nil
}
// PKCS7Unpad removes RFC 2315 padding from byes where message size is m.
func PKCS7Unpad(b []byte, m int) ([]byte, error) {
if m <= 0 {
return nil, errors.New("invalid message block size when unpadding")
}
if b == nil || len(b) == 0 {
return nil, errors.New("padded data not valid: Zero size")
}
if len(b)%m != 0 {
return nil, errors.New("padded data not valid: Not multiple of message block size")
}
c := b[len(b)-1]
n := int(c)
if n == 0 || n > len(b) {
return nil, errors.New("padded data not valid: Data may not have been padded")
}
for i := 0; i < n; i++ {
if b[len(b)-n+i] != c {
return nil, errors.New("padded data not valid")
}
}
return b[:len(b)-n], nil
}
// GetHash generates the keyed hash value according to the etype's hash function.
func GetHash(pt, key []byte, usage []byte, etype etype.EType) ([]byte, error) {
k, err := etype.DeriveKey(key, usage)
if err != nil {
return nil, fmt.Errorf("unable to derive key for checksum: %v", err)
}
mac := hmac.New(etype.GetHashFunc(), k)
p := make([]byte, len(pt))
copy(p, pt)
mac.Write(p)
return mac.Sum(nil)[:etype.GetHMACBitLength()/8], nil
}
// GetChecksumHash returns a keyed checksum hash of the bytes provided.
func GetChecksumHash(b, key []byte, usage uint32, etype etype.EType) ([]byte, error) {
return GetHash(b, key, GetUsageKc(usage), etype)
}
// GetIntegrityHash returns a keyed integrity hash of the bytes provided.
func GetIntegrityHash(b, key []byte, usage uint32, etype etype.EType) ([]byte, error) {
return GetHash(b, key, GetUsageKi(usage), etype)
}
// VerifyChecksum compares the checksum of the msg bytes is the same as the checksum provided.
func VerifyChecksum(key, chksum, msg []byte, usage uint32, etype etype.EType) bool {
//The encrypted message is a concatenation of the encrypted output and the hash HMAC.
expectedMAC, _ := GetChecksumHash(msg, key, usage, etype)
return hmac.Equal(chksum, expectedMAC)
}
// GetUsageKc returns the checksum key usage value for the usage number un.
//
// See RFC 3961 5.3 key-derivation function definition.
func GetUsageKc(un uint32) []byte {
return getUsage(un, 0x99)
}
// GetUsageKe returns the encryption key usage value for the usage number un
//
// See RFC 3961 5.3 key-derivation function definition.
func GetUsageKe(un uint32) []byte {
return getUsage(un, 0xAA)
}
// GetUsageKi returns the integrity key usage value for the usage number un
//
// See RFC 3961 5.3 key-derivation function definition.
func GetUsageKi(un uint32) []byte {
return getUsage(un, 0x55)
}
func getUsage(un uint32, o byte) []byte {
var buf bytes.Buffer
binary.Write(&buf, binary.BigEndian, un)
return append(buf.Bytes(), o)
}
// IterationsToS2Kparams converts the number of iterations as an integer to a string representation.
func IterationsToS2Kparams(i uint32) string {
b := make([]byte, 4, 4)
binary.BigEndian.PutUint32(b, i)
return hex.EncodeToString(b)
}

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vendor/github.com/jcmturner/gokrb5/v8/crypto/crypto.go generated vendored Normal file
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// Package crypto implements cryptographic functions for Kerberos 5 implementation.
package crypto
import (
"encoding/hex"
"fmt"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
"github.com/jcmturner/gokrb5/v8/iana/chksumtype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
"github.com/jcmturner/gokrb5/v8/iana/patype"
"github.com/jcmturner/gokrb5/v8/types"
)
// GetEtype returns an instances of the required etype struct for the etype ID.
func GetEtype(id int32) (etype.EType, error) {
switch id {
case etypeID.AES128_CTS_HMAC_SHA1_96:
var et Aes128CtsHmacSha96
return et, nil
case etypeID.AES256_CTS_HMAC_SHA1_96:
var et Aes256CtsHmacSha96
return et, nil
case etypeID.AES128_CTS_HMAC_SHA256_128:
var et Aes128CtsHmacSha256128
return et, nil
case etypeID.AES256_CTS_HMAC_SHA384_192:
var et Aes256CtsHmacSha384192
return et, nil
case etypeID.DES3_CBC_SHA1_KD:
var et Des3CbcSha1Kd
return et, nil
case etypeID.RC4_HMAC:
var et RC4HMAC
return et, nil
default:
return nil, fmt.Errorf("unknown or unsupported EType: %d", id)
}
}
// GetChksumEtype returns an instances of the required etype struct for the checksum ID.
func GetChksumEtype(id int32) (etype.EType, error) {
switch id {
case chksumtype.HMAC_SHA1_96_AES128:
var et Aes128CtsHmacSha96
return et, nil
case chksumtype.HMAC_SHA1_96_AES256:
var et Aes256CtsHmacSha96
return et, nil
case chksumtype.HMAC_SHA256_128_AES128:
var et Aes128CtsHmacSha256128
return et, nil
case chksumtype.HMAC_SHA384_192_AES256:
var et Aes256CtsHmacSha384192
return et, nil
case chksumtype.HMAC_SHA1_DES3_KD:
var et Des3CbcSha1Kd
return et, nil
case chksumtype.KERB_CHECKSUM_HMAC_MD5:
var et RC4HMAC
return et, nil
//case chksumtype.KERB_CHECKSUM_HMAC_MD5_UNSIGNED:
// var et RC4HMAC
// return et, nil
default:
return nil, fmt.Errorf("unknown or unsupported checksum type: %d", id)
}
}
// GetKeyFromPassword generates an encryption key from the principal's password.
func GetKeyFromPassword(passwd string, cname types.PrincipalName, realm string, etypeID int32, pas types.PADataSequence) (types.EncryptionKey, etype.EType, error) {
var key types.EncryptionKey
et, err := GetEtype(etypeID)
if err != nil {
return key, et, fmt.Errorf("error getting encryption type: %v", err)
}
sk2p := et.GetDefaultStringToKeyParams()
var salt string
var paID int32
for _, pa := range pas {
switch pa.PADataType {
case patype.PA_PW_SALT:
if paID > pa.PADataType {
continue
}
salt = string(pa.PADataValue)
case patype.PA_ETYPE_INFO:
if paID > pa.PADataType {
continue
}
var eti types.ETypeInfo
err := eti.Unmarshal(pa.PADataValue)
if err != nil {
return key, et, fmt.Errorf("error unmashaling PA Data to PA-ETYPE-INFO2: %v", err)
}
if etypeID != eti[0].EType {
et, err = GetEtype(eti[0].EType)
if err != nil {
return key, et, fmt.Errorf("error getting encryption type: %v", err)
}
}
salt = string(eti[0].Salt)
case patype.PA_ETYPE_INFO2:
if paID > pa.PADataType {
continue
}
var et2 types.ETypeInfo2
err := et2.Unmarshal(pa.PADataValue)
if err != nil {
return key, et, fmt.Errorf("error unmashalling PA Data to PA-ETYPE-INFO2: %v", err)
}
if etypeID != et2[0].EType {
et, err = GetEtype(et2[0].EType)
if err != nil {
return key, et, fmt.Errorf("error getting encryption type: %v", err)
}
}
if len(et2[0].S2KParams) == 4 {
sk2p = hex.EncodeToString(et2[0].S2KParams)
}
salt = et2[0].Salt
}
}
if salt == "" {
salt = cname.GetSalt(realm)
}
k, err := et.StringToKey(passwd, salt, sk2p)
if err != nil {
return key, et, fmt.Errorf("error deriving key from string: %+v", err)
}
key = types.EncryptionKey{
KeyType: etypeID,
KeyValue: k,
}
return key, et, nil
}
// GetEncryptedData encrypts the data provided and returns and EncryptedData type.
// Pass a usage value of zero to use the key provided directly rather than deriving one.
func GetEncryptedData(plainBytes []byte, key types.EncryptionKey, usage uint32, kvno int) (types.EncryptedData, error) {
var ed types.EncryptedData
et, err := GetEtype(key.KeyType)
if err != nil {
return ed, fmt.Errorf("error getting etype: %v", err)
}
_, b, err := et.EncryptMessage(key.KeyValue, plainBytes, usage)
if err != nil {
return ed, err
}
ed = types.EncryptedData{
EType: key.KeyType,
Cipher: b,
KVNO: kvno,
}
return ed, nil
}
// DecryptEncPart decrypts the EncryptedData.
func DecryptEncPart(ed types.EncryptedData, key types.EncryptionKey, usage uint32) ([]byte, error) {
return DecryptMessage(ed.Cipher, key, usage)
}
// DecryptMessage decrypts the ciphertext and verifies the integrity.
func DecryptMessage(ciphertext []byte, key types.EncryptionKey, usage uint32) ([]byte, error) {
et, err := GetEtype(key.KeyType)
if err != nil {
return []byte{}, fmt.Errorf("error decrypting: %v", err)
}
b, err := et.DecryptMessage(key.KeyValue, ciphertext, usage)
if err != nil {
return nil, fmt.Errorf("error decrypting: %v", err)
}
return b, nil
}

139
vendor/github.com/jcmturner/gokrb5/v8/crypto/des3-cbc-sha1-kd.go generated vendored Normal file
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package crypto
import (
"crypto/des"
"crypto/hmac"
"crypto/sha1"
"errors"
"hash"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/rfc3961"
"github.com/jcmturner/gokrb5/v8/iana/chksumtype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
)
//RFC: 3961 Section 6.3
// Des3CbcSha1Kd implements Kerberos encryption type des3-cbc-hmac-sha1-kd
type Des3CbcSha1Kd struct {
}
// GetETypeID returns the EType ID number.
func (e Des3CbcSha1Kd) GetETypeID() int32 {
return etypeID.DES3_CBC_SHA1_KD
}
// GetHashID returns the checksum type ID number.
func (e Des3CbcSha1Kd) GetHashID() int32 {
return chksumtype.HMAC_SHA1_DES3_KD
}
// GetKeyByteSize returns the number of bytes for key of this etype.
func (e Des3CbcSha1Kd) GetKeyByteSize() int {
return 24
}
// GetKeySeedBitLength returns the number of bits for the seed for key generation.
func (e Des3CbcSha1Kd) GetKeySeedBitLength() int {
return 21 * 8
}
// GetHashFunc returns the hash function for this etype.
func (e Des3CbcSha1Kd) GetHashFunc() func() hash.Hash {
return sha1.New
}
// GetMessageBlockByteSize returns the block size for the etype's messages.
func (e Des3CbcSha1Kd) GetMessageBlockByteSize() int {
//For traditional CBC mode with padding, it would be the underlying cipher's block size
return des.BlockSize
}
// GetDefaultStringToKeyParams returns the default key derivation parameters in string form.
func (e Des3CbcSha1Kd) GetDefaultStringToKeyParams() string {
var s string
return s
}
// GetConfounderByteSize returns the byte count for confounder to be used during cryptographic operations.
func (e Des3CbcSha1Kd) GetConfounderByteSize() int {
return des.BlockSize
}
// GetHMACBitLength returns the bit count size of the integrity hash.
func (e Des3CbcSha1Kd) GetHMACBitLength() int {
return e.GetHashFunc()().Size() * 8
}
// GetCypherBlockBitLength returns the bit count size of the cypher block.
func (e Des3CbcSha1Kd) GetCypherBlockBitLength() int {
return des.BlockSize * 8
}
// StringToKey returns a key derived from the string provided.
func (e Des3CbcSha1Kd) StringToKey(secret string, salt string, s2kparams string) ([]byte, error) {
if s2kparams != "" {
return []byte{}, errors.New("s2kparams must be an empty string")
}
return rfc3961.DES3StringToKey(secret, salt, e)
}
// RandomToKey returns a key from the bytes provided.
func (e Des3CbcSha1Kd) RandomToKey(b []byte) []byte {
return rfc3961.DES3RandomToKey(b)
}
// DeriveRandom generates data needed for key generation.
func (e Des3CbcSha1Kd) DeriveRandom(protocolKey, usage []byte) ([]byte, error) {
r, err := rfc3961.DeriveRandom(protocolKey, usage, e)
return r, err
}
// DeriveKey derives a key from the protocol key based on the usage value.
func (e Des3CbcSha1Kd) DeriveKey(protocolKey, usage []byte) ([]byte, error) {
r, err := e.DeriveRandom(protocolKey, usage)
if err != nil {
return nil, err
}
return e.RandomToKey(r), nil
}
// EncryptData encrypts the data provided.
func (e Des3CbcSha1Kd) EncryptData(key, data []byte) ([]byte, []byte, error) {
return rfc3961.DES3EncryptData(key, data, e)
}
// EncryptMessage encrypts the message provided and concatenates it with the integrity hash to create an encrypted message.
func (e Des3CbcSha1Kd) EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error) {
return rfc3961.DES3EncryptMessage(key, message, usage, e)
}
// DecryptData decrypts the data provided.
func (e Des3CbcSha1Kd) DecryptData(key, data []byte) ([]byte, error) {
return rfc3961.DES3DecryptData(key, data, e)
}
// DecryptMessage decrypts the message provided and verifies the integrity of the message.
func (e Des3CbcSha1Kd) DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error) {
return rfc3961.DES3DecryptMessage(key, ciphertext, usage, e)
}
// VerifyIntegrity checks the integrity of the plaintext message.
func (e Des3CbcSha1Kd) VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool {
return rfc3961.VerifyIntegrity(protocolKey, ct, pt, usage, e)
}
// GetChecksumHash returns a keyed checksum hash of the bytes provided.
func (e Des3CbcSha1Kd) GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error) {
return common.GetHash(data, protocolKey, common.GetUsageKc(usage), e)
}
// VerifyChecksum compares the checksum of the message bytes is the same as the checksum provided.
func (e Des3CbcSha1Kd) VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool {
c, err := e.GetChecksumHash(protocolKey, data, usage)
if err != nil {
return false
}
return hmac.Equal(chksum, c)
}

29
vendor/github.com/jcmturner/gokrb5/v8/crypto/etype/etype.go generated vendored Normal file
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// Package etype provides the Kerberos Encryption Type interface
package etype
import "hash"
// EType is the interface defining the Encryption Type.
type EType interface {
GetETypeID() int32
GetHashID() int32
GetKeyByteSize() int
GetKeySeedBitLength() int
GetDefaultStringToKeyParams() string
StringToKey(string, salt, s2kparams string) ([]byte, error)
RandomToKey(b []byte) []byte
GetHMACBitLength() int
GetMessageBlockByteSize() int
EncryptData(key, data []byte) ([]byte, []byte, error)
EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error)
DecryptData(key, data []byte) ([]byte, error)
DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error)
GetCypherBlockBitLength() int
GetConfounderByteSize() int
DeriveKey(protocolKey, usage []byte) ([]byte, error)
DeriveRandom(protocolKey, usage []byte) ([]byte, error)
VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool
GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error)
VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool
GetHashFunc() func() hash.Hash
}

133
vendor/github.com/jcmturner/gokrb5/v8/crypto/rc4-hmac.go generated vendored Normal file
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package crypto
import (
"bytes"
"crypto/hmac"
"crypto/md5"
"hash"
"io"
"github.com/jcmturner/gokrb5/v8/crypto/rfc3961"
"github.com/jcmturner/gokrb5/v8/crypto/rfc4757"
"github.com/jcmturner/gokrb5/v8/iana/chksumtype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
"golang.org/x/crypto/md4"
)
// RC4HMAC implements Kerberos encryption type rc4-hmac
type RC4HMAC struct {
}
// GetETypeID returns the EType ID number.
func (e RC4HMAC) GetETypeID() int32 {
return etypeID.RC4_HMAC
}
// GetHashID returns the checksum type ID number.
func (e RC4HMAC) GetHashID() int32 {
return chksumtype.KERB_CHECKSUM_HMAC_MD5
}
// GetKeyByteSize returns the number of bytes for key of this etype.
func (e RC4HMAC) GetKeyByteSize() int {
return 16
}
// GetKeySeedBitLength returns the number of bits for the seed for key generation.
func (e RC4HMAC) GetKeySeedBitLength() int {
return e.GetKeyByteSize() * 8
}
// GetHashFunc returns the hash function for this etype.
func (e RC4HMAC) GetHashFunc() func() hash.Hash {
return md5.New
}
// GetMessageBlockByteSize returns the block size for the etype's messages.
func (e RC4HMAC) GetMessageBlockByteSize() int {
return 1
}
// GetDefaultStringToKeyParams returns the default key derivation parameters in string form.
func (e RC4HMAC) GetDefaultStringToKeyParams() string {
return ""
}
// GetConfounderByteSize returns the byte count for confounder to be used during cryptographic operations.
func (e RC4HMAC) GetConfounderByteSize() int {
return 8
}
// GetHMACBitLength returns the bit count size of the integrity hash.
func (e RC4HMAC) GetHMACBitLength() int {
return md5.Size * 8
}
// GetCypherBlockBitLength returns the bit count size of the cypher block.
func (e RC4HMAC) GetCypherBlockBitLength() int {
return 8 // doesn't really apply
}
// StringToKey returns a key derived from the string provided.
func (e RC4HMAC) StringToKey(secret string, salt string, s2kparams string) ([]byte, error) {
return rfc4757.StringToKey(secret)
}
// RandomToKey returns a key from the bytes provided.
func (e RC4HMAC) RandomToKey(b []byte) []byte {
r := bytes.NewReader(b)
h := md4.New()
io.Copy(h, r)
return h.Sum(nil)
}
// EncryptData encrypts the data provided.
func (e RC4HMAC) EncryptData(key, data []byte) ([]byte, []byte, error) {
b, err := rfc4757.EncryptData(key, data, e)
return []byte{}, b, err
}
// EncryptMessage encrypts the message provided and concatenates it with the integrity hash to create an encrypted message.
func (e RC4HMAC) EncryptMessage(key, message []byte, usage uint32) ([]byte, []byte, error) {
b, err := rfc4757.EncryptMessage(key, message, usage, false, e)
return []byte{}, b, err
}
// DecryptData decrypts the data provided.
func (e RC4HMAC) DecryptData(key, data []byte) ([]byte, error) {
return rfc4757.DecryptData(key, data, e)
}
// DecryptMessage decrypts the message provided and verifies the integrity of the message.
func (e RC4HMAC) DecryptMessage(key, ciphertext []byte, usage uint32) ([]byte, error) {
return rfc4757.DecryptMessage(key, ciphertext, usage, false, e)
}
// DeriveKey derives a key from the protocol key based on the usage value.
func (e RC4HMAC) DeriveKey(protocolKey, usage []byte) ([]byte, error) {
return rfc4757.HMAC(protocolKey, usage), nil
}
// DeriveRandom generates data needed for key generation.
func (e RC4HMAC) DeriveRandom(protocolKey, usage []byte) ([]byte, error) {
return rfc3961.DeriveRandom(protocolKey, usage, e)
}
// VerifyIntegrity checks the integrity of the plaintext message.
func (e RC4HMAC) VerifyIntegrity(protocolKey, ct, pt []byte, usage uint32) bool {
return rfc4757.VerifyIntegrity(protocolKey, pt, ct, e)
}
// GetChecksumHash returns a keyed checksum hash of the bytes provided.
func (e RC4HMAC) GetChecksumHash(protocolKey, data []byte, usage uint32) ([]byte, error) {
return rfc4757.Checksum(protocolKey, usage, data)
}
// VerifyChecksum compares the checksum of the message bytes is the same as the checksum provided.
func (e RC4HMAC) VerifyChecksum(protocolKey, data, chksum []byte, usage uint32) bool {
checksum, err := rfc4757.Checksum(protocolKey, usage, data)
if err != nil {
return false
}
return hmac.Equal(checksum, chksum)
}

119
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc3961/encryption.go generated vendored Normal file
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// Package rfc3961 provides encryption and checksum methods as specified in RFC 3961
package rfc3961
import (
"crypto/cipher"
"crypto/des"
"crypto/hmac"
"crypto/rand"
"errors"
"fmt"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
)
// DES3EncryptData encrypts the data provided using DES3 and methods specific to the etype provided.
func DES3EncryptData(key, data []byte, e etype.EType) ([]byte, []byte, error) {
if len(key) != e.GetKeyByteSize() {
return nil, nil, fmt.Errorf("incorrect keysize: expected: %v actual: %v", e.GetKeyByteSize(), len(key))
}
data, _ = common.ZeroPad(data, e.GetMessageBlockByteSize())
block, err := des.NewTripleDESCipher(key)
if err != nil {
return nil, nil, fmt.Errorf("error creating cipher: %v", err)
}
//RFC 3961: initial cipher state All bits zero
ivz := make([]byte, des.BlockSize)
ct := make([]byte, len(data))
mode := cipher.NewCBCEncrypter(block, ivz)
mode.CryptBlocks(ct, data)
return ct[len(ct)-e.GetMessageBlockByteSize():], ct, nil
}
// DES3EncryptMessage encrypts the message provided using DES3 and methods specific to the etype provided.
// The encrypted data is concatenated with its integrity hash to create an encrypted message.
func DES3EncryptMessage(key, message []byte, usage uint32, e etype.EType) ([]byte, []byte, error) {
//confounder
c := make([]byte, e.GetConfounderByteSize())
_, err := rand.Read(c)
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("could not generate random confounder: %v", err)
}
plainBytes := append(c, message...)
plainBytes, _ = common.ZeroPad(plainBytes, e.GetMessageBlockByteSize())
// Derive key for encryption from usage
var k []byte
if usage != 0 {
k, err = e.DeriveKey(key, common.GetUsageKe(usage))
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("error deriving key for encryption: %v", err)
}
}
iv, b, err := e.EncryptData(k, plainBytes)
if err != nil {
return iv, b, fmt.Errorf("error encrypting data: %v", err)
}
// Generate and append integrity hash
ih, err := common.GetIntegrityHash(plainBytes, key, usage, e)
if err != nil {
return iv, b, fmt.Errorf("error encrypting data: %v", err)
}
b = append(b, ih...)
return iv, b, nil
}
// DES3DecryptData decrypts the data provided using DES3 and methods specific to the etype provided.
func DES3DecryptData(key, data []byte, e etype.EType) ([]byte, error) {
if len(key) != e.GetKeyByteSize() {
return []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", e.GetKeyByteSize(), len(key))
}
if len(data) < des.BlockSize || len(data)%des.BlockSize != 0 {
return []byte{}, errors.New("ciphertext is not a multiple of the block size")
}
block, err := des.NewTripleDESCipher(key)
if err != nil {
return []byte{}, fmt.Errorf("error creating cipher: %v", err)
}
pt := make([]byte, len(data))
ivz := make([]byte, des.BlockSize)
mode := cipher.NewCBCDecrypter(block, ivz)
mode.CryptBlocks(pt, data)
return pt, nil
}
// DES3DecryptMessage decrypts the message provided using DES3 and methods specific to the etype provided.
// The integrity of the message is also verified.
func DES3DecryptMessage(key, ciphertext []byte, usage uint32, e etype.EType) ([]byte, error) {
//Derive the key
k, err := e.DeriveKey(key, common.GetUsageKe(usage))
if err != nil {
return nil, fmt.Errorf("error deriving key: %v", err)
}
// Strip off the checksum from the end
b, err := e.DecryptData(k, ciphertext[:len(ciphertext)-e.GetHMACBitLength()/8])
if err != nil {
return nil, fmt.Errorf("error decrypting: %v", err)
}
//Verify checksum
if !e.VerifyIntegrity(key, ciphertext, b, usage) {
return nil, errors.New("error decrypting: integrity verification failed")
}
//Remove the confounder bytes
return b[e.GetConfounderByteSize():], nil
}
// VerifyIntegrity verifies the integrity of cipertext bytes ct.
func VerifyIntegrity(key, ct, pt []byte, usage uint32, etype etype.EType) bool {
h := make([]byte, etype.GetHMACBitLength()/8)
copy(h, ct[len(ct)-etype.GetHMACBitLength()/8:])
expectedMAC, _ := common.GetIntegrityHash(pt, key, usage, etype)
return hmac.Equal(h, expectedMAC)
}

169
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc3961/keyDerivation.go generated vendored Normal file
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package rfc3961
import (
"bytes"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
)
const (
prfconstant = "prf"
)
// DeriveRandom implements the RFC 3961 defined function: DR(Key, Constant) = k-truncate(E(Key, Constant, initial-cipher-state)).
//
// key: base key or protocol key. Likely to be a key from a keytab file.
//
// usage: a constant.
//
// n: block size in bits (not bytes) - note if you use something like aes.BlockSize this is in bytes.
//
// k: key length / key seed length in bits. Eg. for AES256 this value is 256.
//
// e: the encryption etype function to use.
func DeriveRandom(key, usage []byte, e etype.EType) ([]byte, error) {
n := e.GetCypherBlockBitLength()
k := e.GetKeySeedBitLength()
//Ensure the usage constant is at least the size of the cypher block size. Pass it through the nfold algorithm that will "stretch" it if needs be.
nFoldUsage := Nfold(usage, n)
//k-truncate implemented by creating a byte array the size of k (k is in bits hence /8)
out := make([]byte, k/8)
// Keep feeding the output back into the encryption function until it is no longer short than k.
_, K, err := e.EncryptData(key, nFoldUsage)
if err != nil {
return out, err
}
for i := copy(out, K); i < len(out); {
_, K, _ = e.EncryptData(key, K)
i = i + copy(out[i:], K)
}
return out, nil
}
// DeriveKey derives a key from the protocol key based on the usage and the etype's specific methods.
func DeriveKey(protocolKey, usage []byte, e etype.EType) ([]byte, error) {
r, err := e.DeriveRandom(protocolKey, usage)
if err != nil {
return nil, err
}
return e.RandomToKey(r), nil
}
// RandomToKey returns a key from the bytes provided according to the definition in RFC 3961.
func RandomToKey(b []byte) []byte {
return b
}
// DES3RandomToKey returns a key from the bytes provided according to the definition in RFC 3961 for DES3 etypes.
func DES3RandomToKey(b []byte) []byte {
r := fixWeakKey(stretch56Bits(b[:7]))
r2 := fixWeakKey(stretch56Bits(b[7:14]))
r = append(r, r2...)
r3 := fixWeakKey(stretch56Bits(b[14:21]))
r = append(r, r3...)
return r
}
// DES3StringToKey returns a key derived from the string provided according to the definition in RFC 3961 for DES3 etypes.
func DES3StringToKey(secret, salt string, e etype.EType) ([]byte, error) {
s := secret + salt
tkey := e.RandomToKey(Nfold([]byte(s), e.GetKeySeedBitLength()))
return e.DeriveKey(tkey, []byte("kerberos"))
}
// PseudoRandom function as defined in RFC 3961
func PseudoRandom(key, b []byte, e etype.EType) ([]byte, error) {
h := e.GetHashFunc()()
h.Write(b)
tmp := h.Sum(nil)[:e.GetMessageBlockByteSize()]
k, err := e.DeriveKey(key, []byte(prfconstant))
if err != nil {
return []byte{}, err
}
_, prf, err := e.EncryptData(k, tmp)
if err != nil {
return []byte{}, err
}
return prf, nil
}
func stretch56Bits(b []byte) []byte {
d := make([]byte, len(b), len(b))
copy(d, b)
var lb byte
for i, v := range d {
bv, nb := calcEvenParity(v)
d[i] = nb
if bv != 0 {
lb = lb | (1 << uint(i+1))
} else {
lb = lb &^ (1 << uint(i+1))
}
}
_, lb = calcEvenParity(lb)
d = append(d, lb)
return d
}
func calcEvenParity(b byte) (uint8, uint8) {
lowestbit := b & 0x01
// c counter of 1s in the first 7 bits of the byte
var c int
// Iterate over the highest 7 bits (hence p starts at 1 not zero) and count the 1s.
for p := 1; p < 8; p++ {
v := b & (1 << uint(p))
if v != 0 {
c++
}
}
if c%2 == 0 {
//Even number of 1s so set parity to 1
b = b | 1
} else {
//Odd number of 1s so set parity to 0
b = b &^ 1
}
return lowestbit, b
}
func fixWeakKey(b []byte) []byte {
if weak(b) {
b[7] ^= 0xF0
}
return b
}
func weak(b []byte) bool {
// weak keys from https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-67r1.pdf
weakKeys := [4][]byte{
{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
{0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE},
{0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1},
{0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E},
}
semiWeakKeys := [12][]byte{
{0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E},
{0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01},
{0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1},
{0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01},
{0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE},
{0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01},
{0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1},
{0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E},
{0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE},
{0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E},
{0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE},
{0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1},
}
for _, k := range weakKeys {
if bytes.Equal(b, k) {
return true
}
}
for _, k := range semiWeakKeys {
if bytes.Equal(b, k) {
return true
}
}
return false
}

107
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc3961/nfold.go generated vendored Normal file
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package rfc3961
// Implementation of the n-fold algorithm as defined in RFC 3961.
/* Credits
This golang implementation of nfold used the following project for help with implementation detail.
Although their source is in java it was helpful as a reference implementation of the RFC.
You can find the source code of their open source project along with license information below.
We acknowledge and are grateful to these developers for their contributions to open source
Project: Apache Directory (http://http://directory.apache.org/)
https://svn.apache.org/repos/asf/directory/apacheds/tags/1.5.1/kerberos-shared/src/main/java/org/apache/directory/server/kerberos/shared/crypto/encryption/NFold.java
License: http://www.apache.org/licenses/LICENSE-2.0
*/
// Nfold expands the key to ensure it is not smaller than one cipher block.
// Defined in RFC 3961.
//
// m input bytes that will be "stretched" to the least common multiple of n bits and the bit length of m.
func Nfold(m []byte, n int) []byte {
k := len(m) * 8
//Get the lowest common multiple of the two bit sizes
lcm := lcm(n, k)
relicate := lcm / k
var sumBytes []byte
for i := 0; i < relicate; i++ {
rotation := 13 * i
sumBytes = append(sumBytes, rotateRight(m, rotation)...)
}
nfold := make([]byte, n/8)
sum := make([]byte, n/8)
for i := 0; i < lcm/n; i++ {
for j := 0; j < n/8; j++ {
sum[j] = sumBytes[j+(i*len(sum))]
}
nfold = onesComplementAddition(nfold, sum)
}
return nfold
}
func onesComplementAddition(n1, n2 []byte) []byte {
numBits := len(n1) * 8
out := make([]byte, numBits/8)
carry := 0
for i := numBits - 1; i > -1; i-- {
n1b := getBit(&n1, i)
n2b := getBit(&n2, i)
s := n1b + n2b + carry
if s == 0 || s == 1 {
setBit(&out, i, s)
carry = 0
} else if s == 2 {
carry = 1
} else if s == 3 {
setBit(&out, i, 1)
carry = 1
}
}
if carry == 1 {
carryArray := make([]byte, len(n1))
carryArray[len(carryArray)-1] = 1
out = onesComplementAddition(out, carryArray)
}
return out
}
func rotateRight(b []byte, step int) []byte {
out := make([]byte, len(b))
bitLen := len(b) * 8
for i := 0; i < bitLen; i++ {
v := getBit(&b, i)
setBit(&out, (i+step)%bitLen, v)
}
return out
}
func lcm(x, y int) int {
return (x * y) / gcd(x, y)
}
func gcd(x, y int) int {
for y != 0 {
x, y = y, x%y
}
return x
}
func getBit(b *[]byte, p int) int {
pByte := p / 8
pBit := uint(p % 8)
vByte := (*b)[pByte]
vInt := int(vByte >> (8 - (pBit + 1)) & 0x0001)
return vInt
}
func setBit(b *[]byte, p, v int) {
pByte := p / 8
pBit := uint(p % 8)
oldByte := (*b)[pByte]
var newByte byte
newByte = byte(v<<(8-(pBit+1))) | oldByte
(*b)[pByte] = newByte
}

89
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc3962/encryption.go generated vendored Normal file
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// Package rfc3962 provides encryption and checksum methods as specified in RFC 3962
package rfc3962
import (
"crypto/rand"
"errors"
"fmt"
"github.com/jcmturner/aescts/v2"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
)
// EncryptData encrypts the data provided using methods specific to the etype provided as defined in RFC 3962.
func EncryptData(key, data []byte, e etype.EType) ([]byte, []byte, error) {
if len(key) != e.GetKeyByteSize() {
return []byte{}, []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", e.GetKeyByteSize(), len(key))
}
ivz := make([]byte, e.GetCypherBlockBitLength()/8)
return aescts.Encrypt(key, ivz, data)
}
// EncryptMessage encrypts the message provided using the methods specific to the etype provided as defined in RFC 3962.
// The encrypted data is concatenated with its integrity hash to create an encrypted message.
func EncryptMessage(key, message []byte, usage uint32, e etype.EType) ([]byte, []byte, error) {
if len(key) != e.GetKeyByteSize() {
return []byte{}, []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", e.GetKeyByteSize(), len(key))
}
//confounder
c := make([]byte, e.GetConfounderByteSize())
_, err := rand.Read(c)
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("could not generate random confounder: %v", err)
}
plainBytes := append(c, message...)
// Derive key for encryption from usage
var k []byte
if usage != 0 {
k, err = e.DeriveKey(key, common.GetUsageKe(usage))
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("error deriving key for encryption: %v", err)
}
}
// Encrypt the data
iv, b, err := e.EncryptData(k, plainBytes)
if err != nil {
return iv, b, fmt.Errorf("error encrypting data: %v", err)
}
// Generate and append integrity hash
ih, err := common.GetIntegrityHash(plainBytes, key, usage, e)
if err != nil {
return iv, b, fmt.Errorf("error encrypting data: %v", err)
}
b = append(b, ih...)
return iv, b, nil
}
// DecryptData decrypts the data provided using the methods specific to the etype provided as defined in RFC 3962.
func DecryptData(key, data []byte, e etype.EType) ([]byte, error) {
if len(key) != e.GetKeyByteSize() {
return []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", e.GetKeyByteSize(), len(key))
}
ivz := make([]byte, e.GetCypherBlockBitLength()/8)
return aescts.Decrypt(key, ivz, data)
}
// DecryptMessage decrypts the message provided using the methods specific to the etype provided as defined in RFC 3962.
// The integrity of the message is also verified.
func DecryptMessage(key, ciphertext []byte, usage uint32, e etype.EType) ([]byte, error) {
//Derive the key
k, err := e.DeriveKey(key, common.GetUsageKe(usage))
if err != nil {
return nil, fmt.Errorf("error deriving key: %v", err)
}
// Strip off the checksum from the end
b, err := e.DecryptData(k, ciphertext[:len(ciphertext)-e.GetHMACBitLength()/8])
if err != nil {
return nil, err
}
//Verify checksum
if !e.VerifyIntegrity(key, ciphertext, b, usage) {
return nil, errors.New("integrity verification failed")
}
//Remove the confounder bytes
return b[e.GetConfounderByteSize():], nil
}

51
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc3962/keyDerivation.go generated vendored Normal file
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package rfc3962
import (
"encoding/binary"
"encoding/hex"
"errors"
"github.com/jcmturner/gofork/x/crypto/pbkdf2"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
)
const (
s2kParamsZero = 4294967296
)
// StringToKey returns a key derived from the string provided according to the definition in RFC 3961.
func StringToKey(secret, salt, s2kparams string, e etype.EType) ([]byte, error) {
i, err := S2KparamsToItertions(s2kparams)
if err != nil {
return nil, err
}
return StringToKeyIter(secret, salt, i, e)
}
// StringToPBKDF2 generates an encryption key from a pass phrase and salt string using the PBKDF2 function from PKCS #5 v2.0
func StringToPBKDF2(secret, salt string, iterations int64, e etype.EType) []byte {
return pbkdf2.Key64([]byte(secret), []byte(salt), iterations, int64(e.GetKeyByteSize()), e.GetHashFunc())
}
// StringToKeyIter returns a key derived from the string provided according to the definition in RFC 3961.
func StringToKeyIter(secret, salt string, iterations int64, e etype.EType) ([]byte, error) {
tkey := e.RandomToKey(StringToPBKDF2(secret, salt, iterations, e))
return e.DeriveKey(tkey, []byte("kerberos"))
}
// S2KparamsToItertions converts the string representation of iterations to an integer
func S2KparamsToItertions(s2kparams string) (int64, error) {
//The s2kparams string should be hex string representing 4 bytes
//The 4 bytes represent a number in big endian order
//If the value is zero then the number of iterations should be 4,294,967,296 (2^32)
var i uint32
if len(s2kparams) != 8 {
return int64(s2kParamsZero), errors.New("invalid s2kparams length")
}
b, err := hex.DecodeString(s2kparams)
if err != nil {
return int64(s2kParamsZero), errors.New("invalid s2kparams, cannot decode string to bytes")
}
i = binary.BigEndian.Uint32(b)
return int64(i), nil
}

40
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc4757/checksum.go generated vendored Normal file
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package rfc4757
import (
"bytes"
"crypto/hmac"
"crypto/md5"
"io"
)
// Checksum returns a hash of the data in accordance with RFC 4757
func Checksum(key []byte, usage uint32, data []byte) ([]byte, error) {
// Create hashing key
s := append([]byte(`signaturekey`), byte(0x00)) //includes zero octet at end
mac := hmac.New(md5.New, key)
mac.Write(s)
Ksign := mac.Sum(nil)
// Format data
tb := UsageToMSMsgType(usage)
p := append(tb, data...)
h := md5.New()
rb := bytes.NewReader(p)
_, err := io.Copy(h, rb)
if err != nil {
return []byte{}, err
}
tmp := h.Sum(nil)
// Generate HMAC
mac = hmac.New(md5.New, Ksign)
mac.Write(tmp)
return mac.Sum(nil), nil
}
// HMAC returns a keyed MD5 checksum of the data
func HMAC(key []byte, data []byte) []byte {
mac := hmac.New(md5.New, key)
mac.Write(data)
return mac.Sum(nil)
}

80
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc4757/encryption.go generated vendored Normal file
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// Package rfc4757 provides encryption and checksum methods as specified in RFC 4757
package rfc4757
import (
"crypto/hmac"
"crypto/rand"
"crypto/rc4"
"errors"
"fmt"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
)
// EncryptData encrypts the data provided using methods specific to the etype provided as defined in RFC 4757.
func EncryptData(key, data []byte, e etype.EType) ([]byte, error) {
if len(key) != e.GetKeyByteSize() {
return []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", e.GetKeyByteSize(), len(key))
}
rc4Cipher, err := rc4.NewCipher(key)
if err != nil {
return []byte{}, fmt.Errorf("error creating RC4 cipher: %v", err)
}
ed := make([]byte, len(data))
copy(ed, data)
rc4Cipher.XORKeyStream(ed, ed)
rc4Cipher.Reset()
return ed, nil
}
// DecryptData decrypts the data provided using the methods specific to the etype provided as defined in RFC 4757.
func DecryptData(key, data []byte, e etype.EType) ([]byte, error) {
return EncryptData(key, data, e)
}
// EncryptMessage encrypts the message provided using the methods specific to the etype provided as defined in RFC 4757.
// The encrypted data is concatenated with its RC4 header containing integrity checksum and confounder to create an encrypted message.
func EncryptMessage(key, data []byte, usage uint32, export bool, e etype.EType) ([]byte, error) {
confounder := make([]byte, e.GetConfounderByteSize()) // size = 8
_, err := rand.Read(confounder)
if err != nil {
return []byte{}, fmt.Errorf("error generating confounder: %v", err)
}
k1 := key
k2 := HMAC(k1, UsageToMSMsgType(usage))
toenc := append(confounder, data...)
chksum := HMAC(k2, toenc)
k3 := HMAC(k2, chksum)
ed, err := EncryptData(k3, toenc, e)
if err != nil {
return []byte{}, fmt.Errorf("error encrypting data: %v", err)
}
msg := append(chksum, ed...)
return msg, nil
}
// DecryptMessage decrypts the message provided using the methods specific to the etype provided as defined in RFC 4757.
// The integrity of the message is also verified.
func DecryptMessage(key, data []byte, usage uint32, export bool, e etype.EType) ([]byte, error) {
checksum := data[:e.GetHMACBitLength()/8]
ct := data[e.GetHMACBitLength()/8:]
_, k2, k3 := deriveKeys(key, checksum, usage, export)
pt, err := DecryptData(k3, ct, e)
if err != nil {
return []byte{}, fmt.Errorf("error decrypting data: %v", err)
}
if !VerifyIntegrity(k2, pt, data, e) {
return []byte{}, errors.New("integrity checksum incorrect")
}
return pt[e.GetConfounderByteSize():], nil
}
// VerifyIntegrity checks the integrity checksum of the data matches that calculated from the decrypted data.
func VerifyIntegrity(key, pt, data []byte, e etype.EType) bool {
chksum := HMAC(key, pt)
return hmac.Equal(chksum, data[:e.GetHMACBitLength()/8])
}

40
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc4757/keyDerivation.go generated vendored Normal file
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package rfc4757
import (
"bytes"
"encoding/hex"
"errors"
"fmt"
"io"
"golang.org/x/crypto/md4"
)
// StringToKey returns a key derived from the string provided according to the definition in RFC 4757.
func StringToKey(secret string) ([]byte, error) {
b := make([]byte, len(secret)*2, len(secret)*2)
for i, r := range secret {
u := fmt.Sprintf("%04x", r)
c, err := hex.DecodeString(u)
if err != nil {
return []byte{}, errors.New("character could not be encoded")
}
// Swap round the two bytes to make little endian as we put into byte slice
b[2*i] = c[1]
b[2*i+1] = c[0]
}
r := bytes.NewReader(b)
h := md4.New()
_, err := io.Copy(h, r)
if err != nil {
return []byte{}, err
}
return h.Sum(nil), nil
}
func deriveKeys(key, checksum []byte, usage uint32, export bool) (k1, k2, k3 []byte) {
k1 = key
k2 = HMAC(k1, UsageToMSMsgType(usage))
k3 = HMAC(k2, checksum)
return
}

20
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc4757/msgtype.go generated vendored Normal file
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package rfc4757
import "encoding/binary"
// UsageToMSMsgType converts Kerberos key usage numbers to Microsoft message type encoded as a little-endian four byte slice.
func UsageToMSMsgType(usage uint32) []byte {
// Translate usage numbers to the Microsoft T numbers
switch usage {
case 3:
usage = 8
case 9:
usage = 8
case 23:
usage = 13
}
// Now convert to bytes
tb := make([]byte, 4) // We force an int32 input so we can't go over 4 bytes
binary.PutUvarint(tb, uint64(usage))
return tb
}

125
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc8009/encryption.go generated vendored Normal file
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// Package rfc8009 provides encryption and checksum methods as specified in RFC 8009
package rfc8009
import (
"crypto/aes"
"crypto/hmac"
"crypto/rand"
"errors"
"fmt"
"github.com/jcmturner/aescts/v2"
"github.com/jcmturner/gokrb5/v8/crypto/common"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
)
// EncryptData encrypts the data provided using methods specific to the etype provided as defined in RFC 8009.
func EncryptData(key, data []byte, e etype.EType) ([]byte, []byte, error) {
kl := e.GetKeyByteSize()
if e.GetETypeID() == etypeID.AES256_CTS_HMAC_SHA384_192 {
kl = 32
}
if len(key) != kl {
return []byte{}, []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", e.GetKeyByteSize(), len(key))
}
ivz := make([]byte, aes.BlockSize)
return aescts.Encrypt(key, ivz, data)
}
// EncryptMessage encrypts the message provided using the methods specific to the etype provided as defined in RFC 8009.
// The encrypted data is concatenated with its integrity hash to create an encrypted message.
func EncryptMessage(key, message []byte, usage uint32, e etype.EType) ([]byte, []byte, error) {
kl := e.GetKeyByteSize()
if e.GetETypeID() == etypeID.AES256_CTS_HMAC_SHA384_192 {
kl = 32
}
if len(key) != kl {
return []byte{}, []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", kl, len(key))
}
if len(key) != e.GetKeyByteSize() {
}
//confounder
c := make([]byte, e.GetConfounderByteSize())
_, err := rand.Read(c)
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("could not generate random confounder: %v", err)
}
plainBytes := append(c, message...)
// Derive key for encryption from usage
var k []byte
if usage != 0 {
k, err = e.DeriveKey(key, common.GetUsageKe(usage))
if err != nil {
return []byte{}, []byte{}, fmt.Errorf("error deriving key for encryption: %v", err)
}
}
// Encrypt the data
iv, b, err := e.EncryptData(k, plainBytes)
if err != nil {
return iv, b, fmt.Errorf("error encrypting data: %v", err)
}
ivz := make([]byte, e.GetConfounderByteSize())
ih, err := GetIntegityHash(ivz, b, key, usage, e)
if err != nil {
return iv, b, fmt.Errorf("error encrypting data: %v", err)
}
b = append(b, ih...)
return iv, b, nil
}
// DecryptData decrypts the data provided using the methods specific to the etype provided as defined in RFC 8009.
func DecryptData(key, data []byte, e etype.EType) ([]byte, error) {
kl := e.GetKeyByteSize()
if e.GetETypeID() == etypeID.AES256_CTS_HMAC_SHA384_192 {
kl = 32
}
if len(key) != kl {
return []byte{}, fmt.Errorf("incorrect keysize: expected: %v actual: %v", kl, len(key))
}
ivz := make([]byte, aes.BlockSize)
return aescts.Decrypt(key, ivz, data)
}
// DecryptMessage decrypts the message provided using the methods specific to the etype provided as defined in RFC 8009.
// The integrity of the message is also verified.
func DecryptMessage(key, ciphertext []byte, usage uint32, e etype.EType) ([]byte, error) {
//Derive the key
k, err := e.DeriveKey(key, common.GetUsageKe(usage))
if err != nil {
return nil, fmt.Errorf("error deriving key: %v", err)
}
// Strip off the checksum from the end
b, err := e.DecryptData(k, ciphertext[:len(ciphertext)-e.GetHMACBitLength()/8])
if err != nil {
return nil, err
}
//Verify checksum
if !e.VerifyIntegrity(key, ciphertext, b, usage) {
return nil, errors.New("integrity verification failed")
}
//Remove the confounder bytes
return b[e.GetConfounderByteSize():], nil
}
// GetIntegityHash returns a keyed integrity hash of the bytes provided as defined in RFC 8009
func GetIntegityHash(iv, c, key []byte, usage uint32, e etype.EType) ([]byte, error) {
// Generate and append integrity hash
// Rather than calculating the hash over the confounder and plaintext
// it is calculated over the iv concatenated with the AES cipher output.
ib := append(iv, c...)
return common.GetIntegrityHash(ib, key, usage, e)
}
// VerifyIntegrity verifies the integrity of cipertext bytes ct.
func VerifyIntegrity(key, ct []byte, usage uint32, etype etype.EType) bool {
h := make([]byte, etype.GetHMACBitLength()/8)
copy(h, ct[len(ct)-etype.GetHMACBitLength()/8:])
ivz := make([]byte, etype.GetConfounderByteSize())
ib := append(ivz, ct[:len(ct)-(etype.GetHMACBitLength()/8)]...)
expectedMAC, _ := common.GetIntegrityHash(ib, key, usage, etype)
return hmac.Equal(h, expectedMAC)
}

135
vendor/github.com/jcmturner/gokrb5/v8/crypto/rfc8009/keyDerivation.go generated vendored Normal file
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package rfc8009
import (
"crypto/hmac"
"encoding/binary"
"encoding/hex"
"errors"
"github.com/jcmturner/gokrb5/v8/crypto/etype"
"github.com/jcmturner/gokrb5/v8/iana/etypeID"
"golang.org/x/crypto/pbkdf2"
)
const (
s2kParamsZero = 32768
)
// DeriveRandom for key derivation as defined in RFC 8009
func DeriveRandom(protocolKey, usage []byte, e etype.EType) ([]byte, error) {
h := e.GetHashFunc()()
return KDF_HMAC_SHA2(protocolKey, []byte("prf"), usage, h.Size(), e), nil
}
// DeriveKey derives a key from the protocol key based on the usage and the etype's specific methods.
//
// https://tools.ietf.org/html/rfc8009#section-5
func DeriveKey(protocolKey, label []byte, e etype.EType) []byte {
var context []byte
var kl int
// Key length is longer for aes256-cts-hmac-sha384-192 is it is a Ke or from StringToKey (where label is "kerberos")
if e.GetETypeID() == etypeID.AES256_CTS_HMAC_SHA384_192 {
Swtch:
switch label[len(label)-1] {
case 0x73:
// 0x73 is "s" so label could be kerberos meaning StringToKey so now check if the label is "kerberos"
kerblabel := []byte("kerberos")
if len(label) != len(kerblabel) {
break
}
for i, b := range label {
if b != kerblabel[i] {
kl = e.GetKeySeedBitLength()
break Swtch
}
}
if kl == 0 {
// This is StringToKey
kl = 256
}
case 0xAA:
// This is a Ke
kl = 256
}
}
if kl == 0 {
kl = e.GetKeySeedBitLength()
}
return e.RandomToKey(KDF_HMAC_SHA2(protocolKey, label, context, kl, e))
}
// RandomToKey returns a key from the bytes provided according to the definition in RFC 8009.
func RandomToKey(b []byte) []byte {
return b
}
// StringToKey returns a key derived from the string provided according to the definition in RFC 8009.
func StringToKey(secret, salt, s2kparams string, e etype.EType) ([]byte, error) {
i, err := S2KparamsToItertions(s2kparams)
if err != nil {
return nil, err
}
return StringToKeyIter(secret, salt, i, e)
}
// StringToKeyIter returns a key derived from the string provided according to the definition in RFC 8009.
func StringToKeyIter(secret, salt string, iterations int, e etype.EType) ([]byte, error) {
tkey := e.RandomToKey(StringToPBKDF2(secret, salt, iterations, e))
return e.DeriveKey(tkey, []byte("kerberos"))
}
// StringToPBKDF2 generates an encryption key from a pass phrase and salt string using the PBKDF2 function from PKCS #5 v2.0
func StringToPBKDF2(secret, salt string, iterations int, e etype.EType) []byte {
kl := e.GetKeyByteSize()
if e.GetETypeID() == etypeID.AES256_CTS_HMAC_SHA384_192 {
kl = 32
}
return pbkdf2.Key([]byte(secret), []byte(salt), iterations, kl, e.GetHashFunc())
}
// KDF_HMAC_SHA2 key derivation: https://tools.ietf.org/html/rfc8009#section-3
func KDF_HMAC_SHA2(protocolKey, label, context []byte, kl int, e etype.EType) []byte {
//k: Length in bits of the key to be outputted, expressed in big-endian binary representation in 4 bytes.
k := make([]byte, 4, 4)
binary.BigEndian.PutUint32(k, uint32(kl))
c := make([]byte, 4, 4)
binary.BigEndian.PutUint32(c, uint32(1))
c = append(c, label...)
c = append(c, byte(0))
if len(context) > 0 {
c = append(c, context...)
}
c = append(c, k...)
mac := hmac.New(e.GetHashFunc(), protocolKey)
mac.Write(c)
return mac.Sum(nil)[:(kl / 8)]
}
// GetSaltP returns the salt value based on the etype name: https://tools.ietf.org/html/rfc8009#section-4
func GetSaltP(salt, ename string) string {
b := []byte(ename)
b = append(b, byte(0))
b = append(b, []byte(salt)...)
return string(b)
}
// S2KparamsToItertions converts the string representation of iterations to an integer for RFC 8009.
func S2KparamsToItertions(s2kparams string) (int, error) {
var i uint32
if len(s2kparams) != 8 {
return s2kParamsZero, errors.New("Invalid s2kparams length")
}
b, err := hex.DecodeString(s2kparams)
if err != nil {
return s2kParamsZero, errors.New("Invalid s2kparams, cannot decode string to bytes")
}
i = binary.BigEndian.Uint32(b)
//buf := bytes.NewBuffer(b)
//err = binary.Read(buf, binary.BigEndian, &i)
if err != nil {
return s2kParamsZero, errors.New("Invalid s2kparams, cannot convert to big endian int32")
}
return int(i), nil
}

174
vendor/github.com/jcmturner/gokrb5/v8/gssapi/MICToken.go generated vendored Normal file
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package gssapi
import (
"bytes"
"crypto/hmac"
"encoding/binary"
"encoding/hex"
"errors"
"fmt"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/types"
)
// RFC 4121, section 4.2.6.1
const (
// MICTokenFlagSentByAcceptor - this flag indicates the sender is the context acceptor. When not set, it indicates the sender is the context initiator
MICTokenFlagSentByAcceptor = 1 << iota
// MICTokenFlagSealed - this flag indicates confidentiality is provided for. It SHALL NOT be set in MIC tokens
MICTokenFlagSealed
// MICTokenFlagAcceptorSubkey - a subkey asserted by the context acceptor is used to protect the message
MICTokenFlagAcceptorSubkey
)
const (
micHdrLen = 16 // Length of the MIC Token's header
)
// MICToken represents a GSS API MIC token, as defined in RFC 4121.
// It contains the header fields, the payload (this is not transmitted) and
// the checksum, and provides the logic for converting to/from bytes plus
// computing and verifying checksums
type MICToken struct {
// const GSS Token ID: 0x0404
Flags byte // contains three flags: acceptor, sealed, acceptor subkey
// const Filler: 0xFF 0xFF 0xFF 0xFF 0xFF
SndSeqNum uint64 // sender's sequence number. big-endian
Payload []byte // your data! :)
Checksum []byte // checksum of { payload | header }
}
// Return the 2 bytes identifying a GSS API MIC token
func getGSSMICTokenID() *[2]byte {
return &[2]byte{0x04, 0x04}
}
// Return the filler bytes used in header
func fillerBytes() *[5]byte {
return &[5]byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
}
// Marshal the MICToken into a byte slice.
// The payload should have been set and the checksum computed, otherwise an error is returned.
func (mt *MICToken) Marshal() ([]byte, error) {
if mt.Checksum == nil {
return nil, errors.New("checksum has not been set")
}
bytes := make([]byte, micHdrLen+len(mt.Checksum))
copy(bytes[0:micHdrLen], mt.getMICChecksumHeader()[:])
copy(bytes[micHdrLen:], mt.Checksum)
return bytes, nil
}
// SetChecksum uses the passed encryption key and key usage to compute the checksum over the payload and
// the header, and sets the Checksum field of this MICToken.
// If the payload has not been set or the checksum has already been set, an error is returned.
func (mt *MICToken) SetChecksum(key types.EncryptionKey, keyUsage uint32) error {
if mt.Checksum != nil {
return errors.New("checksum has already been computed")
}
checksum, err := mt.checksum(key, keyUsage)
if err != nil {
return err
}
mt.Checksum = checksum
return nil
}
// Compute and return the checksum of this token, computed using the passed key and key usage.
// Note: This will NOT update the struct's Checksum field.
func (mt *MICToken) checksum(key types.EncryptionKey, keyUsage uint32) ([]byte, error) {
if mt.Payload == nil {
return nil, errors.New("cannot compute checksum with uninitialized payload")
}
d := make([]byte, micHdrLen+len(mt.Payload))
copy(d[0:], mt.Payload)
copy(d[len(mt.Payload):], mt.getMICChecksumHeader())
encType, err := crypto.GetEtype(key.KeyType)
if err != nil {
return nil, err
}
return encType.GetChecksumHash(key.KeyValue, d, keyUsage)
}
// Build a header suitable for a checksum computation
func (mt *MICToken) getMICChecksumHeader() []byte {
header := make([]byte, micHdrLen)
copy(header[0:2], getGSSMICTokenID()[:])
header[2] = mt.Flags
copy(header[3:8], fillerBytes()[:])
binary.BigEndian.PutUint64(header[8:16], mt.SndSeqNum)
return header
}
// Verify computes the token's checksum with the provided key and usage,
// and compares it to the checksum present in the token.
// In case of any failure, (false, err) is returned, with err an explanatory error.
func (mt *MICToken) Verify(key types.EncryptionKey, keyUsage uint32) (bool, error) {
computed, err := mt.checksum(key, keyUsage)
if err != nil {
return false, err
}
if !hmac.Equal(computed, mt.Checksum) {
return false, fmt.Errorf(
"checksum mismatch. Computed: %s, Contained in token: %s",
hex.EncodeToString(computed), hex.EncodeToString(mt.Checksum))
}
return true, nil
}
// Unmarshal bytes into the corresponding MICToken.
// If expectFromAcceptor is true we expect the token to have been emitted by the gss acceptor,
// and will check the according flag, returning an error if the token does not match the expectation.
func (mt *MICToken) Unmarshal(b []byte, expectFromAcceptor bool) error {
if len(b) < micHdrLen {
return errors.New("bytes shorter than header length")
}
if !bytes.Equal(getGSSMICTokenID()[:], b[0:2]) {
return fmt.Errorf("wrong Token ID, Expected %s, was %s",
hex.EncodeToString(getGSSMICTokenID()[:]),
hex.EncodeToString(b[0:2]))
}
flags := b[2]
isFromAcceptor := flags&MICTokenFlagSentByAcceptor != 0
if isFromAcceptor && !expectFromAcceptor {
return errors.New("unexpected acceptor flag is set: not expecting a token from the acceptor")
}
if !isFromAcceptor && expectFromAcceptor {
return errors.New("unexpected acceptor flag is not set: expecting a token from the acceptor, not in the initiator")
}
if !bytes.Equal(b[3:8], fillerBytes()[:]) {
return fmt.Errorf("unexpected filler bytes: expecting %s, was %s",
hex.EncodeToString(fillerBytes()[:]),
hex.EncodeToString(b[3:8]))
}
mt.Flags = flags
mt.SndSeqNum = binary.BigEndian.Uint64(b[8:16])
mt.Checksum = b[micHdrLen:]
return nil
}
// NewInitiatorMICToken builds a new initiator token (acceptor flag will be set to 0) and computes the authenticated checksum.
// Other flags are set to 0.
// Note that in certain circumstances you may need to provide a sequence number that has been defined earlier.
// This is currently not supported.
func NewInitiatorMICToken(payload []byte, key types.EncryptionKey) (*MICToken, error) {
token := MICToken{
Flags: 0x00,
SndSeqNum: 0,
Payload: payload,
}
if err := token.SetChecksum(key, keyusage.GSSAPI_INITIATOR_SIGN); err != nil {
return nil, err
}
return &token, nil
}

20
vendor/github.com/jcmturner/gokrb5/v8/gssapi/README.md generated vendored Normal file
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# Notes on GSS-API Negotiation Mechanism
https://tools.ietf.org/html/rfc4178
Client sends an initial negotiation message to the server which specifies the list of mechanisms
the client can support in order of decreasing preference.
This message is generated with the ``NewNegTokenInitKrb5`` method.
The message generated by this function specifies only a kerberos v5 mechanism is supported.
The RFC states that this message can optionally contain the initial mechanism token
for the preferred mechanism (KRB5 in this case) of the client. The ``NewNegTokenInitKrb5``
includes this in the message.
The server side responds to this message with a one of four messages:
| Message Type/State | Description |
|--------------------|-------------|
| accept-completed | indicates that the initiator-selected mechanism was acceptable to the target, and that the security mechanism token embedded in the first negotiation message was sufficient to complete the authentication |
| accept-incomplete | At least one more message is needed from the client to establish security context. |
| reject | Negotiation is being terminated. |
| request-mic | (this state can only be present in the first reply message from the target) indicates that the MIC token exchange is REQUIRED if per-message integrity services are available |

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vendor/github.com/jcmturner/gokrb5/v8/gssapi/contextFlags.go generated vendored Normal file
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package gssapi
import "github.com/jcmturner/gofork/encoding/asn1"
// GSS-API context flags assigned numbers.
const (
ContextFlagDeleg = 1
ContextFlagMutual = 2
ContextFlagReplay = 4
ContextFlagSequence = 8
ContextFlagConf = 16
ContextFlagInteg = 32
ContextFlagAnon = 64
)
// ContextFlags flags for GSSAPI
type ContextFlags asn1.BitString
// NewContextFlags creates a new ContextFlags instance.
func NewContextFlags() ContextFlags {
var c ContextFlags
c.BitLength = 32
c.Bytes = make([]byte, 4)
return c
}

202
vendor/github.com/jcmturner/gokrb5/v8/gssapi/gssapi.go generated vendored Normal file
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// Package gssapi implements Generic Security Services Application Program Interface required for SPNEGO kerberos authentication.
package gssapi
import (
"context"
"fmt"
"github.com/jcmturner/gofork/encoding/asn1"
)
// GSS-API OID names
const (
// GSS-API OID names
OIDKRB5 OIDName = "KRB5" // MechType OID for Kerberos 5
OIDMSLegacyKRB5 OIDName = "MSLegacyKRB5" // MechType OID for Kerberos 5
OIDSPNEGO OIDName = "SPNEGO"
OIDGSSIAKerb OIDName = "GSSIAKerb" // Indicates the client cannot get a service ticket and asks the server to serve as an intermediate to the target KDC. http://k5wiki.kerberos.org/wiki/Projects/IAKERB#IAKERB_mech
)
// GSS-API status values
const (
StatusBadBindings = 1 << iota
StatusBadMech
StatusBadName
StatusBadNameType
StatusBadStatus
StatusBadSig
StatusBadMIC
StatusContextExpired
StatusCredentialsExpired
StatusDefectiveCredential
StatusDefectiveToken
StatusFailure
StatusNoContext
StatusNoCred
StatusBadQOP
StatusUnauthorized
StatusUnavailable
StatusDuplicateElement
StatusNameNotMN
StatusComplete
StatusContinueNeeded
StatusDuplicateToken
StatusOldToken
StatusUnseqToken
StatusGapToken
)
// ContextToken is an interface for a GSS-API context token.
type ContextToken interface {
Marshal() ([]byte, error)
Unmarshal(b []byte) error
Verify() (bool, Status)
Context() context.Context
}
/*
CREDENTIAL MANAGEMENT
GSS_Acquire_cred acquire credentials for use
GSS_Release_cred release credentials after use
GSS_Inquire_cred display information about credentials
GSS_Add_cred construct credentials incrementally
GSS_Inquire_cred_by_mech display per-mechanism credential information
CONTEXT-LEVEL CALLS
GSS_Init_sec_context initiate outbound security context
GSS_Accept_sec_context accept inbound security context
GSS_Delete_sec_context flush context when no longer needed
GSS_Process_context_token process received control token on context
GSS_Context_time indicate validity time remaining on context
GSS_Inquire_context display information about context
GSS_Wrap_size_limit determine GSS_Wrap token size limit
GSS_Export_sec_context transfer context to other process
GSS_Import_sec_context import transferred context
PER-MESSAGE CALLS
GSS_GetMIC apply integrity check, receive as token separate from message
GSS_VerifyMIC validate integrity check token along with message
GSS_Wrap sign, optionally encrypt, encapsulate
GSS_Unwrap decapsulate, decrypt if needed, validate integrity check
SUPPORT CALLS
GSS_Display_status translate status codes to printable form
GSS_Indicate_mechs indicate mech_types supported on local system
GSS_Compare_name compare two names for equality
GSS_Display_name translate name to printable form
GSS_Import_name convert printable name to normalized form
GSS_Release_name free storage of normalized-form name
GSS_Release_buffer free storage of general GSS-allocated object
GSS_Release_OID_set free storage of OID set object
GSS_Create_empty_OID_set create empty OID set
GSS_Add_OID_set_member add member to OID set
GSS_Test_OID_set_member test if OID is member of OID set
GSS_Inquire_names_for_mech indicate name types supported by mechanism
GSS_Inquire_mechs_for_name indicates mechanisms supporting name type
GSS_Canonicalize_name translate name to per-mechanism form
GSS_Export_name externalize per-mechanism name
GSS_Duplicate_name duplicate name object
*/
// Mechanism is the GSS-API interface for authentication mechanisms.
type Mechanism interface {
OID() asn1.ObjectIdentifier
AcquireCred() error // acquire credentials for use (eg. AS exchange for KRB5)
InitSecContext() (ContextToken, error) // initiate outbound security context (eg TGS exchange builds AP_REQ to go into ContextToken to send to service)
AcceptSecContext(ct ContextToken) (bool, context.Context, Status) // service verifies the token server side to establish a context
MIC() MICToken // apply integrity check, receive as token separate from message
VerifyMIC(mt MICToken) (bool, error) // validate integrity check token along with message
Wrap(msg []byte) WrapToken // sign, optionally encrypt, encapsulate
Unwrap(wt WrapToken) []byte // decapsulate, decrypt if needed, validate integrity check
}
// OIDName is the type for defined GSS-API OIDs.
type OIDName string
// OID returns the OID for the provided OID name.
func (o OIDName) OID() asn1.ObjectIdentifier {
switch o {
case OIDSPNEGO:
return asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 2}
case OIDKRB5:
return asn1.ObjectIdentifier{1, 2, 840, 113554, 1, 2, 2}
case OIDMSLegacyKRB5:
return asn1.ObjectIdentifier{1, 2, 840, 48018, 1, 2, 2}
case OIDGSSIAKerb:
return asn1.ObjectIdentifier{1, 3, 6, 1, 5, 2, 5}
}
return asn1.ObjectIdentifier{}
}
// Status is the GSS-API status and implements the error interface.
type Status struct {
Code int
Message string
}
// Error returns the Status description.
func (s Status) Error() string {
var str string
switch s.Code {
case StatusBadBindings:
str = "channel binding mismatch"
case StatusBadMech:
str = "unsupported mechanism requested"
case StatusBadName:
str = "invalid name provided"
case StatusBadNameType:
str = "name of unsupported type provided"
case StatusBadStatus:
str = "invalid input status selector"
case StatusBadSig:
str = "token had invalid integrity check"
case StatusBadMIC:
str = "preferred alias for GSS_S_BAD_SIG"
case StatusContextExpired:
str = "specified security context expired"
case StatusCredentialsExpired:
str = "expired credentials detected"
case StatusDefectiveCredential:
str = "defective credential detected"
case StatusDefectiveToken:
str = "defective token detected"
case StatusFailure:
str = "failure, unspecified at GSS-API level"
case StatusNoContext:
str = "no valid security context specified"
case StatusNoCred:
str = "no valid credentials provided"
case StatusBadQOP:
str = "unsupported QOP valu"
case StatusUnauthorized:
str = "operation unauthorized"
case StatusUnavailable:
str = "operation unavailable"
case StatusDuplicateElement:
str = "duplicate credential element requested"
case StatusNameNotMN:
str = "name contains multi-mechanism elements"
case StatusComplete:
str = "normal completion"
case StatusContinueNeeded:
str = "continuation call to routine required"
case StatusDuplicateToken:
str = "duplicate per-message token detected"
case StatusOldToken:
str = "timed-out per-message token detected"
case StatusUnseqToken:
str = "reordered (early) per-message token detected"
case StatusGapToken:
str = "skipped predecessor token(s) detected"
default:
str = "unknown GSS-API error status"
}
if s.Message != "" {
return fmt.Sprintf("%s: %s", str, s.Message)
}
return str
}

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vendor/github.com/jcmturner/gokrb5/v8/gssapi/wrapToken.go generated vendored Normal file
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package gssapi
import (
"bytes"
"crypto/hmac"
"encoding/binary"
"encoding/hex"
"errors"
"fmt"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/types"
)
// RFC 4121, section 4.2.6.2
const (
HdrLen = 16 // Length of the Wrap Token's header
FillerByte byte = 0xFF
)
// WrapToken represents a GSS API Wrap token, as defined in RFC 4121.
// It contains the header fields, the payload and the checksum, and provides
// the logic for converting to/from bytes plus computing and verifying checksums
type WrapToken struct {
// const GSS Token ID: 0x0504
Flags byte // contains three flags: acceptor, sealed, acceptor subkey
// const Filler: 0xFF
EC uint16 // checksum length. big-endian
RRC uint16 // right rotation count. big-endian
SndSeqNum uint64 // sender's sequence number. big-endian
Payload []byte // your data! :)
CheckSum []byte // authenticated checksum of { payload | header }
}
// Return the 2 bytes identifying a GSS API Wrap token
func getGssWrapTokenId() *[2]byte {
return &[2]byte{0x05, 0x04}
}
// Marshal the WrapToken into a byte slice.
// The payload should have been set and the checksum computed, otherwise an error is returned.
func (wt *WrapToken) Marshal() ([]byte, error) {
if wt.CheckSum == nil {
return nil, errors.New("checksum has not been set")
}
if wt.Payload == nil {
return nil, errors.New("payload has not been set")
}
pldOffset := HdrLen // Offset of the payload in the token
chkSOffset := HdrLen + len(wt.Payload) // Offset of the checksum in the token
bytes := make([]byte, chkSOffset+int(wt.EC))
copy(bytes[0:], getGssWrapTokenId()[:])
bytes[2] = wt.Flags
bytes[3] = FillerByte
binary.BigEndian.PutUint16(bytes[4:6], wt.EC)
binary.BigEndian.PutUint16(bytes[6:8], wt.RRC)
binary.BigEndian.PutUint64(bytes[8:16], wt.SndSeqNum)
copy(bytes[pldOffset:], wt.Payload)
copy(bytes[chkSOffset:], wt.CheckSum)
return bytes, nil
}
// SetCheckSum uses the passed encryption key and key usage to compute the checksum over the payload and
// the header, and sets the CheckSum field of this WrapToken.
// If the payload has not been set or the checksum has already been set, an error is returned.
func (wt *WrapToken) SetCheckSum(key types.EncryptionKey, keyUsage uint32) error {
if wt.Payload == nil {
return errors.New("payload has not been set")
}
if wt.CheckSum != nil {
return errors.New("checksum has already been computed")
}
chkSum, cErr := wt.computeCheckSum(key, keyUsage)
if cErr != nil {
return cErr
}
wt.CheckSum = chkSum
return nil
}
// ComputeCheckSum computes and returns the checksum of this token, computed using the passed key and key usage.
// Note: This will NOT update the struct's Checksum field.
func (wt *WrapToken) computeCheckSum(key types.EncryptionKey, keyUsage uint32) ([]byte, error) {
if wt.Payload == nil {
return nil, errors.New("cannot compute checksum with uninitialized payload")
}
// Build a slice containing { payload | header }
checksumMe := make([]byte, HdrLen+len(wt.Payload))
copy(checksumMe[0:], wt.Payload)
copy(checksumMe[len(wt.Payload):], getChecksumHeader(wt.Flags, wt.SndSeqNum))
encType, err := crypto.GetEtype(key.KeyType)
if err != nil {
return nil, err
}
return encType.GetChecksumHash(key.KeyValue, checksumMe, keyUsage)
}
// Build a header suitable for a checksum computation
func getChecksumHeader(flags byte, senderSeqNum uint64) []byte {
header := make([]byte, 16)
copy(header[0:], []byte{0x05, 0x04, flags, 0xFF, 0x00, 0x00, 0x00, 0x00})
binary.BigEndian.PutUint64(header[8:], senderSeqNum)
return header
}
// Verify computes the token's checksum with the provided key and usage,
// and compares it to the checksum present in the token.
// In case of any failure, (false, Err) is returned, with Err an explanatory error.
func (wt *WrapToken) Verify(key types.EncryptionKey, keyUsage uint32) (bool, error) {
computed, cErr := wt.computeCheckSum(key, keyUsage)
if cErr != nil {
return false, cErr
}
if !hmac.Equal(computed, wt.CheckSum) {
return false, fmt.Errorf(
"checksum mismatch. Computed: %s, Contained in token: %s",
hex.EncodeToString(computed), hex.EncodeToString(wt.CheckSum))
}
return true, nil
}
// Unmarshal bytes into the corresponding WrapToken.
// If expectFromAcceptor is true, we expect the token to have been emitted by the gss acceptor,
// and will check the according flag, returning an error if the token does not match the expectation.
func (wt *WrapToken) Unmarshal(b []byte, expectFromAcceptor bool) error {
// Check if we can read a whole header
if len(b) < 16 {
return errors.New("bytes shorter than header length")
}
// Is the Token ID correct?
if !bytes.Equal(getGssWrapTokenId()[:], b[0:2]) {
return fmt.Errorf("wrong Token ID. Expected %s, was %s",
hex.EncodeToString(getGssWrapTokenId()[:]),
hex.EncodeToString(b[0:2]))
}
// Check the acceptor flag
flags := b[2]
isFromAcceptor := flags&0x01 == 1
if isFromAcceptor && !expectFromAcceptor {
return errors.New("unexpected acceptor flag is set: not expecting a token from the acceptor")
}
if !isFromAcceptor && expectFromAcceptor {
return errors.New("expected acceptor flag is not set: expecting a token from the acceptor, not the initiator")
}
// Check the filler byte
if b[3] != FillerByte {
return fmt.Errorf("unexpected filler byte: expecting 0xFF, was %s ", hex.EncodeToString(b[3:4]))
}
checksumL := binary.BigEndian.Uint16(b[4:6])
// Sanity check on the checksum length
if int(checksumL) > len(b)-HdrLen {
return fmt.Errorf("inconsistent checksum length: %d bytes to parse, checksum length is %d", len(b), checksumL)
}
wt.Flags = flags
wt.EC = checksumL
wt.RRC = binary.BigEndian.Uint16(b[6:8])
wt.SndSeqNum = binary.BigEndian.Uint64(b[8:16])
wt.Payload = b[16 : len(b)-int(checksumL)]
wt.CheckSum = b[len(b)-int(checksumL):]
return nil
}
// NewInitiatorWrapToken builds a new initiator token (acceptor flag will be set to 0) and computes the authenticated checksum.
// Other flags are set to 0, and the RRC and sequence number are initialized to 0.
// Note that in certain circumstances you may need to provide a sequence number that has been defined earlier.
// This is currently not supported.
func NewInitiatorWrapToken(payload []byte, key types.EncryptionKey) (*WrapToken, error) {
encType, err := crypto.GetEtype(key.KeyType)
if err != nil {
return nil, err
}
token := WrapToken{
Flags: 0x00, // all zeroed out (this is a token sent by the initiator)
// Checksum size: length of output of the HMAC function, in bytes.
EC: uint16(encType.GetHMACBitLength() / 8),
RRC: 0,
SndSeqNum: 0,
Payload: payload,
}
if err := token.SetCheckSum(key, keyusage.GSSAPI_INITIATOR_SEAL); err != nil {
return nil, err
}
return &token, nil
}

15
vendor/github.com/jcmturner/gokrb5/v8/iana/addrtype/constants.go generated vendored Normal file
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// Package addrtype provides Address type assigned numbers.
package addrtype
// Address type IDs.
const (
IPv4 int32 = 2
Directional int32 = 3
ChaosNet int32 = 5
XNS int32 = 6
ISO int32 = 7
DECNETPhaseIV int32 = 12
AppleTalkDDP int32 = 16
NetBios int32 = 20
IPv6 int32 = 24
)

23
vendor/github.com/jcmturner/gokrb5/v8/iana/adtype/constants.go generated vendored Normal file
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// Package adtype provides Authenticator type assigned numbers.
package adtype
// Authenticator type IDs.
const (
ADIfRelevant int32 = 1
ADIntendedForServer int32 = 2
ADIntendedForApplicationClass int32 = 3
ADKDCIssued int32 = 4
ADAndOr int32 = 5
ADMandatoryTicketExtensions int32 = 6
ADInTicketExtensions int32 = 7
ADMandatoryForKDC int32 = 8
OSFDCE int32 = 64
SESAME int32 = 65
ADOSFDCEPKICertID int32 = 66
ADAuthenticationStrength int32 = 70
ADFXFastArmor int32 = 71
ADFXFastUsed int32 = 72
ADWin2KPAC int32 = 128
ADEtypeNegotiation int32 = 129
//Reserved values 9-63
)

24
vendor/github.com/jcmturner/gokrb5/v8/iana/asnAppTag/constants.go generated vendored Normal file
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// Package asnAppTag provides ASN1 application tag numbers.
package asnAppTag
// ASN1 application tag numbers.
const (
Ticket = 1
Authenticator = 2
EncTicketPart = 3
ASREQ = 10
TGSREQ = 12
ASREP = 11
TGSREP = 13
APREQ = 14
APREP = 15
KRBSafe = 20
KRBPriv = 21
KRBCred = 22
EncASRepPart = 25
EncTGSRepPart = 26
EncAPRepPart = 27
EncKrbPrivPart = 28
EncKrbCredPart = 29
KRBError = 30
)

32
vendor/github.com/jcmturner/gokrb5/v8/iana/chksumtype/constants.go generated vendored Normal file
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// Package chksumtype provides Kerberos 5 checksum type assigned numbers.
package chksumtype
// Checksum type IDs.
const (
//RESERVED : 0
CRC32 int32 = 1
RSA_MD4 int32 = 2
RSA_MD4_DES int32 = 3
DES_MAC int32 = 4
DES_MAC_K int32 = 5
RSA_MD4_DES_K int32 = 6
RSA_MD5 int32 = 7
RSA_MD5_DES int32 = 8
RSA_MD5_DES3 int32 = 9
SHA1_ID10 int32 = 10
//UNASSIGNED : 11
HMAC_SHA1_DES3_KD int32 = 12
HMAC_SHA1_DES3 int32 = 13
SHA1_ID14 int32 = 14
HMAC_SHA1_96_AES128 int32 = 15
HMAC_SHA1_96_AES256 int32 = 16
CMAC_CAMELLIA128 int32 = 17
CMAC_CAMELLIA256 int32 = 18
HMAC_SHA256_128_AES128 int32 = 19
HMAC_SHA384_192_AES256 int32 = 20
//UNASSIGNED : 21-32770
GSSAPI int32 = 32771
//UNASSIGNED : 32772-2147483647
KERB_CHECKSUM_HMAC_MD5_UNSIGNED uint32 = 4294967158 // 0xFFFFFF76 documentation says this is -138 but in an unsigned int this is 4294967158
KERB_CHECKSUM_HMAC_MD5 int32 = -138
)

5
vendor/github.com/jcmturner/gokrb5/v8/iana/constants.go generated vendored Normal file
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// Package iana provides Kerberos 5 assigned numbers.
package iana
// PVNO is the Protocol Version Number.
const PVNO = 5

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vendor/github.com/jcmturner/gokrb5/v8/iana/errorcode/constants.go generated vendored Normal file
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// Package errorcode provides Kerberos 5 assigned error codes.
package errorcode
import "fmt"
// Kerberos error codes.
const (
KDC_ERR_NONE int32 = 0 //No error
KDC_ERR_NAME_EXP int32 = 1 //Client's entry in database has expired
KDC_ERR_SERVICE_EXP int32 = 2 //Server's entry in database has expired
KDC_ERR_BAD_PVNO int32 = 3 //Requested protocol version number not supported
KDC_ERR_C_OLD_MAST_KVNO int32 = 4 //Client's key encrypted in old master key
KDC_ERR_S_OLD_MAST_KVNO int32 = 5 //Server's key encrypted in old master key
KDC_ERR_C_PRINCIPAL_UNKNOWN int32 = 6 //Client not found in Kerberos database
KDC_ERR_S_PRINCIPAL_UNKNOWN int32 = 7 //Server not found in Kerberos database
KDC_ERR_PRINCIPAL_NOT_UNIQUE int32 = 8 //Multiple principal entries in database
KDC_ERR_NULL_KEY int32 = 9 //The client or server has a null key
KDC_ERR_CANNOT_POSTDATE int32 = 10 //Ticket not eligible for postdating
KDC_ERR_NEVER_VALID int32 = 11 //Requested starttime is later than end time
KDC_ERR_POLICY int32 = 12 //KDC policy rejects request
KDC_ERR_BADOPTION int32 = 13 //KDC cannot accommodate requested option
KDC_ERR_ETYPE_NOSUPP int32 = 14 //KDC has no support for encryption type
KDC_ERR_SUMTYPE_NOSUPP int32 = 15 //KDC has no support for checksum type
KDC_ERR_PADATA_TYPE_NOSUPP int32 = 16 //KDC has no support for padata type
KDC_ERR_TRTYPE_NOSUPP int32 = 17 //KDC has no support for transited type
KDC_ERR_CLIENT_REVOKED int32 = 18 //Clients credentials have been revoked
KDC_ERR_SERVICE_REVOKED int32 = 19 //Credentials for server have been revoked
KDC_ERR_TGT_REVOKED int32 = 20 //TGT has been revoked
KDC_ERR_CLIENT_NOTYET int32 = 21 //Client not yet valid; try again later
KDC_ERR_SERVICE_NOTYET int32 = 22 //Server not yet valid; try again later
KDC_ERR_KEY_EXPIRED int32 = 23 //Password has expired; change password to reset
KDC_ERR_PREAUTH_FAILED int32 = 24 //Pre-authentication information was invalid
KDC_ERR_PREAUTH_REQUIRED int32 = 25 //Additional pre-authentication required
KDC_ERR_SERVER_NOMATCH int32 = 26 //Requested server and ticket don't match
KDC_ERR_MUST_USE_USER2USER int32 = 27 //Server principal valid for user2user only
KDC_ERR_PATH_NOT_ACCEPTED int32 = 28 //KDC Policy rejects transited path
KDC_ERR_SVC_UNAVAILABLE int32 = 29 //A service is not available
KRB_AP_ERR_BAD_INTEGRITY int32 = 31 //Integrity check on decrypted field failed
KRB_AP_ERR_TKT_EXPIRED int32 = 32 //Ticket expired
KRB_AP_ERR_TKT_NYV int32 = 33 //Ticket not yet valid
KRB_AP_ERR_REPEAT int32 = 34 //Request is a replay
KRB_AP_ERR_NOT_US int32 = 35 //The ticket isn't for us
KRB_AP_ERR_BADMATCH int32 = 36 //Ticket and authenticator don't match
KRB_AP_ERR_SKEW int32 = 37 //Clock skew too great
KRB_AP_ERR_BADADDR int32 = 38 //Incorrect net address
KRB_AP_ERR_BADVERSION int32 = 39 //Protocol version mismatch
KRB_AP_ERR_MSG_TYPE int32 = 40 //Invalid msg type
KRB_AP_ERR_MODIFIED int32 = 41 //Message stream modified
KRB_AP_ERR_BADORDER int32 = 42 //Message out of order
KRB_AP_ERR_BADKEYVER int32 = 44 //Specified version of key is not available
KRB_AP_ERR_NOKEY int32 = 45 //Service key not available
KRB_AP_ERR_MUT_FAIL int32 = 46 //Mutual authentication failed
KRB_AP_ERR_BADDIRECTION int32 = 47 //Incorrect message direction
KRB_AP_ERR_METHOD int32 = 48 //Alternative authentication method required
KRB_AP_ERR_BADSEQ int32 = 49 //Incorrect sequence number in message
KRB_AP_ERR_INAPP_CKSUM int32 = 50 //Inappropriate type of checksum in message
KRB_AP_PATH_NOT_ACCEPTED int32 = 51 //Policy rejects transited path
KRB_ERR_RESPONSE_TOO_BIG int32 = 52 //Response too big for UDP; retry with TCP
KRB_ERR_GENERIC int32 = 60 //Generic error (description in e-text)
KRB_ERR_FIELD_TOOLONG int32 = 61 //Field is too long for this implementation
KDC_ERROR_CLIENT_NOT_TRUSTED int32 = 62 //Reserved for PKINIT
KDC_ERROR_KDC_NOT_TRUSTED int32 = 63 //Reserved for PKINIT
KDC_ERROR_INVALID_SIG int32 = 64 //Reserved for PKINIT
KDC_ERR_KEY_TOO_WEAK int32 = 65 //Reserved for PKINIT
KDC_ERR_CERTIFICATE_MISMATCH int32 = 66 //Reserved for PKINIT
KRB_AP_ERR_NO_TGT int32 = 67 //No TGT available to validate USER-TO-USER
KDC_ERR_WRONG_REALM int32 = 68 //Reserved for future use
KRB_AP_ERR_USER_TO_USER_REQUIRED int32 = 69 //Ticket must be for USER-TO-USER
KDC_ERR_CANT_VERIFY_CERTIFICATE int32 = 70 //Reserved for PKINIT
KDC_ERR_INVALID_CERTIFICATE int32 = 71 //Reserved for PKINIT
KDC_ERR_REVOKED_CERTIFICATE int32 = 72 //Reserved for PKINIT
KDC_ERR_REVOCATION_STATUS_UNKNOWN int32 = 73 //Reserved for PKINIT
KDC_ERR_REVOCATION_STATUS_UNAVAILABLE int32 = 74 //Reserved for PKINIT
KDC_ERR_CLIENT_NAME_MISMATCH int32 = 75 //Reserved for PKINIT
KDC_ERR_KDC_NAME_MISMATCH int32 = 76 //Reserved for PKINIT
)
// Lookup an error code description.
func Lookup(i int32) string {
if s, ok := errorcodeLookup[i]; ok {
return fmt.Sprintf("(%d) %s", i, s)
}
return fmt.Sprintf("Unknown ErrorCode %d", i)
}
var errorcodeLookup = map[int32]string{
KDC_ERR_NONE: "KDC_ERR_NONE No error",
KDC_ERR_NAME_EXP: "KDC_ERR_NAME_EXP Client's entry in database has expired",
KDC_ERR_SERVICE_EXP: "KDC_ERR_SERVICE_EXP Server's entry in database has expired",
KDC_ERR_BAD_PVNO: "KDC_ERR_BAD_PVNO Requested protocol version number not supported",
KDC_ERR_C_OLD_MAST_KVNO: "KDC_ERR_C_OLD_MAST_KVNO Client's key encrypted in old master key",
KDC_ERR_S_OLD_MAST_KVNO: "KDC_ERR_S_OLD_MAST_KVNO Server's key encrypted in old master key",
KDC_ERR_C_PRINCIPAL_UNKNOWN: "KDC_ERR_C_PRINCIPAL_UNKNOWN Client not found in Kerberos database",
KDC_ERR_S_PRINCIPAL_UNKNOWN: "KDC_ERR_S_PRINCIPAL_UNKNOWN Server not found in Kerberos database",
KDC_ERR_PRINCIPAL_NOT_UNIQUE: "KDC_ERR_PRINCIPAL_NOT_UNIQUE Multiple principal entries in database",
KDC_ERR_NULL_KEY: "KDC_ERR_NULL_KEY The client or server has a null key",
KDC_ERR_CANNOT_POSTDATE: "KDC_ERR_CANNOT_POSTDATE Ticket not eligible for postdating",
KDC_ERR_NEVER_VALID: "KDC_ERR_NEVER_VALID Requested starttime is later than end time",
KDC_ERR_POLICY: "KDC_ERR_POLICY KDC policy rejects request",
KDC_ERR_BADOPTION: "KDC_ERR_BADOPTION KDC cannot accommodate requested option",
KDC_ERR_ETYPE_NOSUPP: "KDC_ERR_ETYPE_NOSUPP KDC has no support for encryption type",
KDC_ERR_SUMTYPE_NOSUPP: "KDC_ERR_SUMTYPE_NOSUPP KDC has no support for checksum type",
KDC_ERR_PADATA_TYPE_NOSUPP: "KDC_ERR_PADATA_TYPE_NOSUPP KDC has no support for padata type",
KDC_ERR_TRTYPE_NOSUPP: "KDC_ERR_TRTYPE_NOSUPP KDC has no support for transited type",
KDC_ERR_CLIENT_REVOKED: "KDC_ERR_CLIENT_REVOKED Clients credentials have been revoked",
KDC_ERR_SERVICE_REVOKED: "KDC_ERR_SERVICE_REVOKED Credentials for server have been revoked",
KDC_ERR_TGT_REVOKED: "KDC_ERR_TGT_REVOKED TGT has been revoked",
KDC_ERR_CLIENT_NOTYET: "KDC_ERR_CLIENT_NOTYET Client not yet valid; try again later",
KDC_ERR_SERVICE_NOTYET: "KDC_ERR_SERVICE_NOTYET Server not yet valid; try again later",
KDC_ERR_KEY_EXPIRED: "KDC_ERR_KEY_EXPIRED Password has expired; change password to reset",
KDC_ERR_PREAUTH_FAILED: "KDC_ERR_PREAUTH_FAILED Pre-authentication information was invalid",
KDC_ERR_PREAUTH_REQUIRED: "KDC_ERR_PREAUTH_REQUIRED Additional pre-authentication required",
KDC_ERR_SERVER_NOMATCH: "KDC_ERR_SERVER_NOMATCH Requested server and ticket don't match",
KDC_ERR_MUST_USE_USER2USER: "KDC_ERR_MUST_USE_USER2USER Server principal valid for user2user only",
KDC_ERR_PATH_NOT_ACCEPTED: "KDC_ERR_PATH_NOT_ACCEPTED KDC Policy rejects transited path",
KDC_ERR_SVC_UNAVAILABLE: "KDC_ERR_SVC_UNAVAILABLE A service is not available",
KRB_AP_ERR_BAD_INTEGRITY: "KRB_AP_ERR_BAD_INTEGRITY Integrity check on decrypted field failed",
KRB_AP_ERR_TKT_EXPIRED: "KRB_AP_ERR_TKT_EXPIRED Ticket expired",
KRB_AP_ERR_TKT_NYV: "KRB_AP_ERR_TKT_NYV Ticket not yet valid",
KRB_AP_ERR_REPEAT: "KRB_AP_ERR_REPEAT Request is a replay",
KRB_AP_ERR_NOT_US: "KRB_AP_ERR_NOT_US The ticket isn't for us",
KRB_AP_ERR_BADMATCH: "KRB_AP_ERR_BADMATCH Ticket and authenticator don't match",
KRB_AP_ERR_SKEW: "KRB_AP_ERR_SKEW Clock skew too great",
KRB_AP_ERR_BADADDR: "KRB_AP_ERR_BADADDR Incorrect net address",
KRB_AP_ERR_BADVERSION: "KRB_AP_ERR_BADVERSION Protocol version mismatch",
KRB_AP_ERR_MSG_TYPE: "KRB_AP_ERR_MSG_TYPE Invalid msg type",
KRB_AP_ERR_MODIFIED: "KRB_AP_ERR_MODIFIED Message stream modified",
KRB_AP_ERR_BADORDER: "KRB_AP_ERR_BADORDER Message out of order",
KRB_AP_ERR_BADKEYVER: "KRB_AP_ERR_BADKEYVER Specified version of key is not available",
KRB_AP_ERR_NOKEY: "KRB_AP_ERR_NOKEY Service key not available",
KRB_AP_ERR_MUT_FAIL: "KRB_AP_ERR_MUT_FAIL Mutual authentication failed",
KRB_AP_ERR_BADDIRECTION: "KRB_AP_ERR_BADDIRECTION Incorrect message direction",
KRB_AP_ERR_METHOD: "KRB_AP_ERR_METHOD Alternative authentication method required",
KRB_AP_ERR_BADSEQ: "KRB_AP_ERR_BADSEQ Incorrect sequence number in message",
KRB_AP_ERR_INAPP_CKSUM: "KRB_AP_ERR_INAPP_CKSUM Inappropriate type of checksum in message",
KRB_AP_PATH_NOT_ACCEPTED: "KRB_AP_PATH_NOT_ACCEPTED Policy rejects transited path",
KRB_ERR_RESPONSE_TOO_BIG: "KRB_ERR_RESPONSE_TOO_BIG Response too big for UDP; retry with TCP",
KRB_ERR_GENERIC: "KRB_ERR_GENERIC Generic error (description in e-text)",
KRB_ERR_FIELD_TOOLONG: "KRB_ERR_FIELD_TOOLONG Field is too long for this implementation",
KDC_ERROR_CLIENT_NOT_TRUSTED: "KDC_ERROR_CLIENT_NOT_TRUSTED Reserved for PKINIT",
KDC_ERROR_KDC_NOT_TRUSTED: "KDC_ERROR_KDC_NOT_TRUSTED Reserved for PKINIT",
KDC_ERROR_INVALID_SIG: "KDC_ERROR_INVALID_SIG Reserved for PKINIT",
KDC_ERR_KEY_TOO_WEAK: "KDC_ERR_KEY_TOO_WEAK Reserved for PKINIT",
KDC_ERR_CERTIFICATE_MISMATCH: "KDC_ERR_CERTIFICATE_MISMATCH Reserved for PKINIT",
KRB_AP_ERR_NO_TGT: "KRB_AP_ERR_NO_TGT No TGT available to validate USER-TO-USER",
KDC_ERR_WRONG_REALM: "KDC_ERR_WRONG_REALM Reserved for future use",
KRB_AP_ERR_USER_TO_USER_REQUIRED: "KRB_AP_ERR_USER_TO_USER_REQUIRED Ticket must be for USER-TO-USER",
KDC_ERR_CANT_VERIFY_CERTIFICATE: "KDC_ERR_CANT_VERIFY_CERTIFICATE Reserved for PKINIT",
KDC_ERR_INVALID_CERTIFICATE: "KDC_ERR_INVALID_CERTIFICATE Reserved for PKINIT",
KDC_ERR_REVOKED_CERTIFICATE: "KDC_ERR_REVOKED_CERTIFICATE Reserved for PKINIT",
KDC_ERR_REVOCATION_STATUS_UNKNOWN: "KDC_ERR_REVOCATION_STATUS_UNKNOWN Reserved for PKINIT",
KDC_ERR_REVOCATION_STATUS_UNAVAILABLE: "KDC_ERR_REVOCATION_STATUS_UNAVAILABLE Reserved for PKINIT",
KDC_ERR_CLIENT_NAME_MISMATCH: "KDC_ERR_CLIENT_NAME_MISMATCH Reserved for PKINIT",
KDC_ERR_KDC_NAME_MISMATCH: "KDC_ERR_KDC_NAME_MISMATCH Reserved for PKINIT",
}

101
vendor/github.com/jcmturner/gokrb5/v8/iana/etypeID/constants.go generated vendored Normal file
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// Package etypeID provides Kerberos 5 encryption type assigned numbers.
package etypeID
// Kerberos encryption type assigned numbers.
const (
//RESERVED : 0
DES_CBC_CRC int32 = 1
DES_CBC_MD4 int32 = 2
DES_CBC_MD5 int32 = 3
DES_CBC_RAW int32 = 4
DES3_CBC_MD5 int32 = 5
DES3_CBC_RAW int32 = 6
DES3_CBC_SHA1 int32 = 7
DES_HMAC_SHA1 int32 = 8
DSAWITHSHA1_CMSOID int32 = 9
MD5WITHRSAENCRYPTION_CMSOID int32 = 10
SHA1WITHRSAENCRYPTION_CMSOID int32 = 11
RC2CBC_ENVOID int32 = 12
RSAENCRYPTION_ENVOID int32 = 13
RSAES_OAEP_ENV_OID int32 = 14
DES_EDE3_CBC_ENV_OID int32 = 15
DES3_CBC_SHA1_KD int32 = 16
AES128_CTS_HMAC_SHA1_96 int32 = 17
AES256_CTS_HMAC_SHA1_96 int32 = 18
AES128_CTS_HMAC_SHA256_128 int32 = 19
AES256_CTS_HMAC_SHA384_192 int32 = 20
//UNASSIGNED : 21-22
RC4_HMAC int32 = 23
RC4_HMAC_EXP int32 = 24
CAMELLIA128_CTS_CMAC int32 = 25
CAMELLIA256_CTS_CMAC int32 = 26
//UNASSIGNED : 27-64
SUBKEY_KEYMATERIAL int32 = 65
//UNASSIGNED : 66-2147483647
)
// ETypesByName is a map of EncType names to their assigned EncType number.
var ETypesByName = map[string]int32{
"des-cbc-crc": DES_CBC_CRC,
"des-cbc-md4": DES_CBC_MD4,
"des-cbc-md5": DES_CBC_MD5,
"des-cbc-raw": DES_CBC_RAW,
"des3-cbc-md5": DES3_CBC_MD5,
"des3-cbc-raw": DES3_CBC_RAW,
"des3-cbc-sha1": DES3_CBC_SHA1,
"des3-hmac-sha1": DES_HMAC_SHA1,
"des3-cbc-sha1-kd": DES3_CBC_SHA1_KD,
"des-hmac-sha1": DES_HMAC_SHA1,
"dsaWithSHA1-CmsOID": DSAWITHSHA1_CMSOID,
"md5WithRSAEncryption-CmsOID": MD5WITHRSAENCRYPTION_CMSOID,
"sha1WithRSAEncryption-CmsOID": SHA1WITHRSAENCRYPTION_CMSOID,
"rc2CBC-EnvOID": RC2CBC_ENVOID,
"rsaEncryption-EnvOID": RSAENCRYPTION_ENVOID,
"rsaES-OAEP-ENV-OID": RSAES_OAEP_ENV_OID,
"des-ede3-cbc-Env-OID": DES_EDE3_CBC_ENV_OID,
"aes128-cts-hmac-sha1-96": AES128_CTS_HMAC_SHA1_96,
"aes128-cts": AES128_CTS_HMAC_SHA1_96,
"aes128-sha1": AES128_CTS_HMAC_SHA1_96,
"aes256-cts-hmac-sha1-96": AES256_CTS_HMAC_SHA1_96,
"aes256-cts": AES256_CTS_HMAC_SHA1_96,
"aes256-sha1": AES256_CTS_HMAC_SHA1_96,
"aes128-cts-hmac-sha256-128": AES128_CTS_HMAC_SHA256_128,
"aes128-sha2": AES128_CTS_HMAC_SHA256_128,
"aes256-cts-hmac-sha384-192": AES256_CTS_HMAC_SHA384_192,
"aes256-sha2": AES256_CTS_HMAC_SHA384_192,
"arcfour-hmac": RC4_HMAC,
"rc4-hmac": RC4_HMAC,
"arcfour-hmac-md5": RC4_HMAC,
"arcfour-hmac-exp": RC4_HMAC_EXP,
"rc4-hmac-exp": RC4_HMAC_EXP,
"arcfour-hmac-md5-exp": RC4_HMAC_EXP,
"camellia128-cts-cmac": CAMELLIA128_CTS_CMAC,
"camellia128-cts": CAMELLIA128_CTS_CMAC,
"camellia256-cts-cmac": CAMELLIA256_CTS_CMAC,
"camellia256-cts": CAMELLIA256_CTS_CMAC,
"subkey-keymaterial": SUBKEY_KEYMATERIAL,
}
// EtypeSupported resolves the etype name string to the etype ID.
// If zero is returned the etype is not supported by gokrb5.
func EtypeSupported(etype string) int32 {
// Slice of supported enctype IDs
s := []int32{
AES128_CTS_HMAC_SHA1_96,
AES256_CTS_HMAC_SHA1_96,
AES128_CTS_HMAC_SHA256_128,
AES256_CTS_HMAC_SHA384_192,
DES3_CBC_SHA1_KD,
RC4_HMAC,
}
id := ETypesByName[etype]
if id == 0 {
return id
}
for _, sid := range s {
if id == sid {
return id
}
}
return 0
}

36
vendor/github.com/jcmturner/gokrb5/v8/iana/flags/constants.go generated vendored Normal file
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// Package flags provides Kerberos 5 flag assigned numbers.
package flags
// Flag values for KRB5 messages and tickets.
const (
Reserved = 0
Forwardable = 1
Forwarded = 2
Proxiable = 3
Proxy = 4
AllowPostDate = 5
MayPostDate = 5
PostDated = 6
Invalid = 7
Renewable = 8
Initial = 9
PreAuthent = 10
HWAuthent = 11
OptHardwareAuth = 11
RequestAnonymous = 12
TransitedPolicyChecked = 12
OKAsDelegate = 13
EncPARep = 15
Canonicalize = 15
DisableTransitedCheck = 26
RenewableOK = 27
EncTktInSkey = 28
Renew = 30
Validate = 31
// AP Option Flags
// 0 Reserved for future use.
APOptionUseSessionKey = 1
APOptionMutualRequired = 2
// 3-31 Reserved for future use.
)

42
vendor/github.com/jcmturner/gokrb5/v8/iana/keyusage/constants.go generated vendored Normal file
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// Package keyusage provides Kerberos 5 key usage assigned numbers.
package keyusage
// Key usage numbers.
const (
AS_REQ_PA_ENC_TIMESTAMP = 1
KDC_REP_TICKET = 2
AS_REP_ENCPART = 3
TGS_REQ_KDC_REQ_BODY_AUTHDATA_SESSION_KEY = 4
TGS_REQ_KDC_REQ_BODY_AUTHDATA_SUB_KEY = 5
TGS_REQ_PA_TGS_REQ_AP_REQ_AUTHENTICATOR_CHKSUM = 6
TGS_REQ_PA_TGS_REQ_AP_REQ_AUTHENTICATOR = 7
TGS_REP_ENCPART_SESSION_KEY = 8
TGS_REP_ENCPART_AUTHENTICATOR_SUB_KEY = 9
AP_REQ_AUTHENTICATOR_CHKSUM = 10
AP_REQ_AUTHENTICATOR = 11
AP_REP_ENCPART = 12
KRB_PRIV_ENCPART = 13
KRB_CRED_ENCPART = 14
KRB_SAFE_CHKSUM = 15
KERB_NON_KERB_SALT = 16
KERB_NON_KERB_CKSUM_SALT = 17
//18. Reserved for future use in Kerberos and related protocols.
AD_KDC_ISSUED_CHKSUM = 19
//20-21. Reserved for future use in Kerberos and related protocols.
GSSAPI_ACCEPTOR_SEAL = 22
GSSAPI_ACCEPTOR_SIGN = 23
GSSAPI_INITIATOR_SEAL = 24
GSSAPI_INITIATOR_SIGN = 25
KEY_USAGE_FAST_REQ_CHKSUM = 50
KEY_USAGE_FAST_ENC = 51
KEY_USAGE_FAST_REP = 52
KEY_USAGE_FAST_FINISHED = 53
KEY_USAGE_ENC_CHALLENGE_CLIENT = 54
KEY_USAGE_ENC_CHALLENGE_KDC = 55
KEY_USAGE_AS_REQ = 56
//26-511. Reserved for future use in Kerberos and related protocols.
//512-1023. Reserved for uses internal to a Kerberos implementation.
//1024. Encryption for application use in protocols that do not specify key usage values
//1025. Checksums for application use in protocols that do not specify key usage values
//1026-2047. Reserved for application use.
)

18
vendor/github.com/jcmturner/gokrb5/v8/iana/msgtype/constants.go generated vendored Normal file
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// Package msgtype provides Kerberos 5 message type assigned numbers.
package msgtype
// KRB message type IDs.
const (
KRB_AS_REQ = 10 //Request for initial authentication
KRB_AS_REP = 11 //Response to KRB_AS_REQ request
KRB_TGS_REQ = 12 //Request for authentication based on TGT
KRB_TGS_REP = 13 //Response to KRB_TGS_REQ request
KRB_AP_REQ = 14 //Application request to server
KRB_AP_REP = 15 //Response to KRB_AP_REQ_MUTUAL
KRB_RESERVED16 = 16 //Reserved for user-to-user krb_tgt_request
KRB_RESERVED17 = 17 //Reserved for user-to-user krb_tgt_reply
KRB_SAFE = 20 // Safe (checksummed) application message
KRB_PRIV = 21 // Private (encrypted) application message
KRB_CRED = 22 //Private (encrypted) message to forward credentials
KRB_ERROR = 30 //Error response
)

15
vendor/github.com/jcmturner/gokrb5/v8/iana/nametype/constants.go generated vendored Normal file
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// Package nametype provides Kerberos 5 principal name type numbers.
package nametype
// Kerberos name type IDs.
const (
KRB_NT_UNKNOWN int32 = 0 //Name type not known
KRB_NT_PRINCIPAL int32 = 1 //Just the name of the principal as in DCE, or for users
KRB_NT_SRV_INST int32 = 2 //Service and other unique instance (krbtgt)
KRB_NT_SRV_HST int32 = 3 //Service with host name as instance (telnet, rcommands)
KRB_NT_SRV_XHST int32 = 4 //Service with host as remaining components
KRB_NT_UID int32 = 5 //Unique ID
KRB_NT_X500_PRINCIPAL int32 = 6 //Encoded X.509 Distinguished name [RFC2253]
KRB_NT_SMTP_NAME int32 = 7 //Name in form of SMTP email name (e.g., user@example.com)
KRB_NT_ENTERPRISE int32 = 10 //Enterprise name; may be mapped to principal name
)

77
vendor/github.com/jcmturner/gokrb5/v8/iana/patype/constants.go generated vendored Normal file
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// Package patype provides Kerberos 5 pre-authentication type assigned numbers.
package patype
// Kerberos pre-authentication type assigned numbers.
const (
PA_TGS_REQ int32 = 1
PA_ENC_TIMESTAMP int32 = 2
PA_PW_SALT int32 = 3
//RESERVED : 4
PA_ENC_UNIX_TIME int32 = 5
PA_SANDIA_SECUREID int32 = 6
PA_SESAME int32 = 7
PA_OSF_DCE int32 = 8
PA_CYBERSAFE_SECUREID int32 = 9
PA_AFS3_SALT int32 = 10
PA_ETYPE_INFO int32 = 11
PA_SAM_CHALLENGE int32 = 12
PA_SAM_RESPONSE int32 = 13
PA_PK_AS_REQ_OLD int32 = 14
PA_PK_AS_REP_OLD int32 = 15
PA_PK_AS_REQ int32 = 16
PA_PK_AS_REP int32 = 17
PA_PK_OCSP_RESPONSE int32 = 18
PA_ETYPE_INFO2 int32 = 19
PA_USE_SPECIFIED_KVNO int32 = 20
PA_SVR_REFERRAL_INFO int32 = 20
PA_SAM_REDIRECT int32 = 21
PA_GET_FROM_TYPED_DATA int32 = 22
TD_PADATA int32 = 22
PA_SAM_ETYPE_INFO int32 = 23
PA_ALT_PRINC int32 = 24
PA_SERVER_REFERRAL int32 = 25
//UNASSIGNED : 26-29
PA_SAM_CHALLENGE2 int32 = 30
PA_SAM_RESPONSE2 int32 = 31
//UNASSIGNED : 32-40
PA_EXTRA_TGT int32 = 41
//UNASSIGNED : 42-100
TD_PKINIT_CMS_CERTIFICATES int32 = 101
TD_KRB_PRINCIPAL int32 = 102
TD_KRB_REALM int32 = 103
TD_TRUSTED_CERTIFIERS int32 = 104
TD_CERTIFICATE_INDEX int32 = 105
TD_APP_DEFINED_ERROR int32 = 106
TD_REQ_NONCE int32 = 107
TD_REQ_SEQ int32 = 108
TD_DH_PARAMETERS int32 = 109
//UNASSIGNED : 110
TD_CMS_DIGEST_ALGORITHMS int32 = 111
TD_CERT_DIGEST_ALGORITHMS int32 = 112
//UNASSIGNED : 113-127
PA_PAC_REQUEST int32 = 128
PA_FOR_USER int32 = 129
PA_FOR_X509_USER int32 = 130
PA_FOR_CHECK_DUPS int32 = 131
PA_AS_CHECKSUM int32 = 132
PA_FX_COOKIE int32 = 133
PA_AUTHENTICATION_SET int32 = 134
PA_AUTH_SET_SELECTED int32 = 135
PA_FX_FAST int32 = 136
PA_FX_ERROR int32 = 137
PA_ENCRYPTED_CHALLENGE int32 = 138
//UNASSIGNED : 139-140
PA_OTP_CHALLENGE int32 = 141
PA_OTP_REQUEST int32 = 142
PA_OTP_CONFIRM int32 = 143
PA_OTP_PIN_CHANGE int32 = 144
PA_EPAK_AS_REQ int32 = 145
PA_EPAK_AS_REP int32 = 146
PA_PKINIT_KX int32 = 147
PA_PKU2U_NAME int32 = 148
PA_REQ_ENC_PA_REP int32 = 149
PA_AS_FRESHNESS int32 = 150
//UNASSIGNED : 151-164
PA_SUPPORTED_ETYPES int32 = 165
PA_EXTENDED_ERROR int32 = 166
)

23
vendor/github.com/jcmturner/gokrb5/v8/kadmin/changepasswddata.go generated vendored Normal file
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package kadmin
import (
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/types"
)
// ChangePasswdData is the payload to a password change message.
type ChangePasswdData struct {
NewPasswd []byte `asn1:"explicit,tag:0"`
TargName types.PrincipalName `asn1:"explicit,optional,tag:1"`
TargRealm string `asn1:"generalstring,optional,explicit,tag:2"`
}
// Marshal ChangePasswdData into a byte slice.
func (c *ChangePasswdData) Marshal() ([]byte, error) {
b, err := asn1.Marshal(*c)
if err != nil {
return []byte{}, err
}
//b = asn1tools.AddASNAppTag(b, asnAppTag.)
return b, nil
}

114
vendor/github.com/jcmturner/gokrb5/v8/kadmin/message.go generated vendored Normal file
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package kadmin
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"math"
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
)
const (
verisonHex = "ff80"
)
// Request message for changing password.
type Request struct {
APREQ messages.APReq
KRBPriv messages.KRBPriv
}
// Reply message for a password change.
type Reply struct {
MessageLength int
Version int
APREPLength int
APREP messages.APRep
KRBPriv messages.KRBPriv
KRBError messages.KRBError
IsKRBError bool
ResultCode uint16
Result string
}
// Marshal a Request into a byte slice.
func (m *Request) Marshal() (b []byte, err error) {
b = []byte{255, 128} // protocol version number: contains the hex constant 0xff80 (big-endian integer).
ab, e := m.APREQ.Marshal()
if e != nil {
err = fmt.Errorf("error marshaling AP_REQ: %v", e)
return
}
if len(ab) > math.MaxUint16 {
err = errors.New("length of AP_REQ greater then max Uint16 size")
return
}
al := make([]byte, 2)
binary.BigEndian.PutUint16(al, uint16(len(ab)))
b = append(b, al...)
b = append(b, ab...)
pb, e := m.KRBPriv.Marshal()
if e != nil {
err = fmt.Errorf("error marshaling KRB_Priv: %v", e)
return
}
b = append(b, pb...)
if len(b)+2 > math.MaxUint16 {
err = errors.New("length of message greater then max Uint16 size")
return
}
ml := make([]byte, 2)
binary.BigEndian.PutUint16(ml, uint16(len(b)+2))
b = append(ml, b...)
return
}
// Unmarshal a byte slice into a Reply.
func (m *Reply) Unmarshal(b []byte) error {
m.MessageLength = int(binary.BigEndian.Uint16(b[0:2]))
m.Version = int(binary.BigEndian.Uint16(b[2:4]))
if m.Version != 1 {
return fmt.Errorf("kadmin reply has incorrect protocol version number: %d", m.Version)
}
m.APREPLength = int(binary.BigEndian.Uint16(b[4:6]))
if m.APREPLength != 0 {
err := m.APREP.Unmarshal(b[6 : 6+m.APREPLength])
if err != nil {
return err
}
err = m.KRBPriv.Unmarshal(b[6+m.APREPLength : m.MessageLength])
if err != nil {
return err
}
} else {
m.IsKRBError = true
m.KRBError.Unmarshal(b[6:m.MessageLength])
m.ResultCode, m.Result = parseResponse(m.KRBError.EData)
}
return nil
}
func parseResponse(b []byte) (c uint16, s string) {
c = binary.BigEndian.Uint16(b[0:2])
buf := bytes.NewBuffer(b[2:])
m := make([]byte, len(b)-2)
binary.Read(buf, binary.BigEndian, &m)
s = string(m)
return
}
// Decrypt the encrypted part of the KRBError within the change password Reply.
func (m *Reply) Decrypt(key types.EncryptionKey) error {
if m.IsKRBError {
return m.KRBError
}
err := m.KRBPriv.DecryptEncPart(key)
if err != nil {
return err
}
m.ResultCode, m.Result = parseResponse(m.KRBPriv.DecryptedEncPart.UserData)
return nil
}

68
vendor/github.com/jcmturner/gokrb5/v8/kadmin/passwd.go generated vendored Normal file
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// Package kadmin provides Kerberos administration capabilities.
package kadmin
import (
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/messages"
"github.com/jcmturner/gokrb5/v8/types"
)
// ChangePasswdMsg generate a change password request and also return the key needed to decrypt the reply.
func ChangePasswdMsg(cname types.PrincipalName, realm, password string, tkt messages.Ticket, sessionKey types.EncryptionKey) (r Request, k types.EncryptionKey, err error) {
// Create change password data struct and marshal to bytes
chgpasswd := ChangePasswdData{
NewPasswd: []byte(password),
TargName: cname,
TargRealm: realm,
}
chpwdb, err := chgpasswd.Marshal()
if err != nil {
err = krberror.Errorf(err, krberror.KRBMsgError, "error marshaling change passwd data")
return
}
// Generate authenticator
auth, err := types.NewAuthenticator(realm, cname)
if err != nil {
err = krberror.Errorf(err, krberror.KRBMsgError, "error generating new authenticator")
return
}
etype, err := crypto.GetEtype(sessionKey.KeyType)
if err != nil {
err = krberror.Errorf(err, krberror.KRBMsgError, "error generating subkey etype")
return
}
err = auth.GenerateSeqNumberAndSubKey(etype.GetETypeID(), etype.GetKeyByteSize())
if err != nil {
err = krberror.Errorf(err, krberror.KRBMsgError, "error generating subkey")
return
}
k = auth.SubKey
// Generate AP_REQ
APreq, err := messages.NewAPReq(tkt, sessionKey, auth)
if err != nil {
return
}
// Form the KRBPriv encpart data
kp := messages.EncKrbPrivPart{
UserData: chpwdb,
Timestamp: auth.CTime,
Usec: auth.Cusec,
SequenceNumber: auth.SeqNumber,
}
kpriv := messages.NewKRBPriv(kp)
err = kpriv.EncryptEncPart(k)
if err != nil {
err = krberror.Errorf(err, krberror.EncryptingError, "error encrypting change passwd data")
return
}
r = Request{
APREQ: APreq,
KRBPriv: kpriv,
}
return
}

470
vendor/github.com/jcmturner/gokrb5/v8/keytab/keytab.go generated vendored Normal file
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// Package keytab implements Kerberos keytabs: https://web.mit.edu/kerberos/krb5-devel/doc/formats/keytab_file_format.html.
package keytab
import (
"bytes"
"encoding/binary"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"time"
"unsafe"
"github.com/jcmturner/gokrb5/v8/types"
)
const (
keytabFirstByte byte = 05
)
// Keytab struct.
type Keytab struct {
version uint8
Entries []entry
}
// Keytab entry struct.
type entry struct {
Principal principal
Timestamp time.Time
KVNO8 uint8
Key types.EncryptionKey
KVNO uint32
}
// Keytab entry principal struct.
type principal struct {
NumComponents int16 `json:"-"`
Realm string
Components []string
NameType int32
}
// New creates new, empty Keytab type.
func New() *Keytab {
var e []entry
return &Keytab{
version: 0,
Entries: e,
}
}
// GetEncryptionKey returns the EncryptionKey from the Keytab for the newest entry with the required kvno, etype and matching principal.
// If the kvno is zero then the latest kvno will be returned. The kvno is also returned for
func (kt *Keytab) GetEncryptionKey(princName types.PrincipalName, realm string, kvno int, etype int32) (types.EncryptionKey, int, error) {
var key types.EncryptionKey
var t time.Time
for _, k := range kt.Entries {
if k.Principal.Realm == realm && len(k.Principal.Components) == len(princName.NameString) &&
k.Key.KeyType == etype &&
(k.KVNO == uint32(kvno) || kvno == 0) &&
k.Timestamp.After(t) {
p := true
for i, n := range k.Principal.Components {
if princName.NameString[i] != n {
p = false
break
}
}
if p {
key = k.Key
kvno = int(k.KVNO)
t = k.Timestamp
}
}
}
if len(key.KeyValue) < 1 {
return key, 0, fmt.Errorf("matching key not found in keytab. Looking for %v realm: %v kvno: %v etype: %v", princName.NameString, realm, kvno, etype)
}
return key, kvno, nil
}
// Create a new Keytab entry.
func newEntry() entry {
var b []byte
return entry{
Principal: newPrincipal(),
Timestamp: time.Time{},
KVNO8: 0,
Key: types.EncryptionKey{
KeyType: 0,
KeyValue: b,
},
KVNO: 0,
}
}
// Create a new principal.
func newPrincipal() principal {
var c []string
return principal{
NumComponents: 0,
Realm: "",
Components: c,
NameType: 0,
}
}
// Load a Keytab file into a Keytab type.
func Load(ktPath string) (*Keytab, error) {
kt := new(Keytab)
b, err := ioutil.ReadFile(ktPath)
if err != nil {
return kt, err
}
err = kt.Unmarshal(b)
return kt, err
}
// Marshal keytab into byte slice
func (kt *Keytab) Marshal() ([]byte, error) {
b := []byte{keytabFirstByte, kt.version}
for _, e := range kt.Entries {
eb, err := e.marshal(int(kt.version))
if err != nil {
return b, err
}
b = append(b, eb...)
}
return b, nil
}
// Write the keytab bytes to io.Writer.
// Returns the number of bytes written
func (kt *Keytab) Write(w io.Writer) (int, error) {
b, err := kt.Marshal()
if err != nil {
return 0, fmt.Errorf("error marshaling keytab: %v", err)
}
return w.Write(b)
}
// Unmarshal byte slice of Keytab data into Keytab type.
func (kt *Keytab) Unmarshal(b []byte) error {
if len(b) < 2 {
return fmt.Errorf("byte array is less than 2 bytes: %d", len(b))
}
//The first byte of the file always has the value 5
if b[0] != keytabFirstByte {
return errors.New("invalid keytab data. First byte does not equal 5")
}
//Get keytab version
//The 2nd byte contains the version number (1 or 2)
kt.version = b[1]
if kt.version != 1 && kt.version != 2 {
return errors.New("invalid keytab data. Keytab version is neither 1 nor 2")
}
//Version 1 of the file format uses native byte order for integer representations. Version 2 always uses big-endian byte order
var endian binary.ByteOrder
endian = binary.BigEndian
if kt.version == 1 && isNativeEndianLittle() {
endian = binary.LittleEndian
}
// n tracks position in the byte array
n := 2
l, err := readInt32(b, &n, &endian)
if err != nil {
return err
}
for l != 0 {
if l < 0 {
//Zero padded so skip over
l = l * -1
n = n + int(l)
} else {
if n < 0 {
return fmt.Errorf("%d can't be less than zero", n)
}
if n+int(l) > len(b) {
return fmt.Errorf("%s's length is less than %d", b, n+int(l))
}
eb := b[n : n+int(l)]
n = n + int(l)
ke := newEntry()
// p keeps track as to where we are in the byte stream
var p int
var err error
parsePrincipal(eb, &p, kt, &ke, &endian)
ke.Timestamp, err = readTimestamp(eb, &p, &endian)
if err != nil {
return err
}
rei8, err := readInt8(eb, &p, &endian)
if err != nil {
return err
}
ke.KVNO8 = uint8(rei8)
rei16, err := readInt16(eb, &p, &endian)
if err != nil {
return err
}
ke.Key.KeyType = int32(rei16)
rei16, err = readInt16(eb, &p, &endian)
if err != nil {
return err
}
kl := int(rei16)
ke.Key.KeyValue, err = readBytes(eb, &p, kl, &endian)
if err != nil {
return err
}
// The 32-bit key version overrides the 8-bit key version.
// If at least 4 bytes are left after the other fields are read and they are non-zero
// this indicates the 32-bit version is present.
if len(eb)-p >= 4 {
// The 32-bit key may be present
ri32, err := readInt32(eb, &p, &endian)
if err != nil {
return err
}
ke.KVNO = uint32(ri32)
}
if ke.KVNO == 0 {
// Handles if the value from the last 4 bytes was zero and also if there are not the 4 bytes present. Makes sense to put the same value here as KVNO8
ke.KVNO = uint32(ke.KVNO8)
}
// Add the entry to the keytab
kt.Entries = append(kt.Entries, ke)
}
// Check if there are still 4 bytes left to read
// Also check that n is greater than zero
if n < 0 || n > len(b) || len(b[n:]) < 4 {
break
}
// Read the size of the next entry
l, err = readInt32(b, &n, &endian)
if err != nil {
return err
}
}
return nil
}
func (e entry) marshal(v int) ([]byte, error) {
var b []byte
pb, err := e.Principal.marshal(v)
if err != nil {
return b, err
}
b = append(b, pb...)
var endian binary.ByteOrder
endian = binary.BigEndian
if v == 1 && isNativeEndianLittle() {
endian = binary.LittleEndian
}
t := make([]byte, 9)
endian.PutUint32(t[0:4], uint32(e.Timestamp.Unix()))
t[4] = e.KVNO8
endian.PutUint16(t[5:7], uint16(e.Key.KeyType))
endian.PutUint16(t[7:9], uint16(len(e.Key.KeyValue)))
b = append(b, t...)
buf := new(bytes.Buffer)
err = binary.Write(buf, endian, e.Key.KeyValue)
if err != nil {
return b, err
}
b = append(b, buf.Bytes()...)
t = make([]byte, 4)
endian.PutUint32(t, e.KVNO)
b = append(b, t...)
// Add the length header
t = make([]byte, 4)
endian.PutUint32(t, uint32(len(b)))
b = append(t, b...)
return b, nil
}
// Parse the Keytab bytes of a principal into a Keytab entry's principal.
func parsePrincipal(b []byte, p *int, kt *Keytab, ke *entry, e *binary.ByteOrder) error {
var err error
ke.Principal.NumComponents, err = readInt16(b, p, e)
if err != nil {
return err
}
if kt.version == 1 {
//In version 1 the number of components includes the realm. Minus 1 to make consistent with version 2
ke.Principal.NumComponents--
}
lenRealm, err := readInt16(b, p, e)
if err != nil {
return err
}
realmB, err := readBytes(b, p, int(lenRealm), e)
if err != nil {
return err
}
ke.Principal.Realm = string(realmB)
for i := 0; i < int(ke.Principal.NumComponents); i++ {
l, err := readInt16(b, p, e)
if err != nil {
return err
}
compB, err := readBytes(b, p, int(l), e)
if err != nil {
return err
}
ke.Principal.Components = append(ke.Principal.Components, string(compB))
}
if kt.version != 1 {
//Name Type is omitted in version 1
ke.Principal.NameType, err = readInt32(b, p, e)
if err != nil {
return err
}
}
return nil
}
func (p principal) marshal(v int) ([]byte, error) {
//var b []byte
b := make([]byte, 2)
var endian binary.ByteOrder
endian = binary.BigEndian
if v == 1 && isNativeEndianLittle() {
endian = binary.LittleEndian
}
endian.PutUint16(b[0:], uint16(p.NumComponents))
realm, err := marshalString(p.Realm, v)
if err != nil {
return b, err
}
b = append(b, realm...)
for _, c := range p.Components {
cb, err := marshalString(c, v)
if err != nil {
return b, err
}
b = append(b, cb...)
}
if v != 1 {
t := make([]byte, 4)
endian.PutUint32(t, uint32(p.NameType))
b = append(b, t...)
}
return b, nil
}
func marshalString(s string, v int) ([]byte, error) {
sb := []byte(s)
b := make([]byte, 2)
var endian binary.ByteOrder
endian = binary.BigEndian
if v == 1 && isNativeEndianLittle() {
endian = binary.LittleEndian
}
endian.PutUint16(b[0:], uint16(len(sb)))
buf := new(bytes.Buffer)
err := binary.Write(buf, endian, sb)
if err != nil {
return b, err
}
b = append(b, buf.Bytes()...)
return b, err
}
// Read bytes representing a timestamp.
func readTimestamp(b []byte, p *int, e *binary.ByteOrder) (time.Time, error) {
i32, err := readInt32(b, p, e)
if err != nil {
return time.Time{}, err
}
return time.Unix(int64(i32), 0), nil
}
// Read bytes representing an eight bit integer.
func readInt8(b []byte, p *int, e *binary.ByteOrder) (i int8, err error) {
if *p < 0 {
return 0, fmt.Errorf("%d cannot be less than zero", *p)
}
if (*p + 1) > len(b) {
return 0, fmt.Errorf("%s's length is less than %d", b, *p+1)
}
buf := bytes.NewBuffer(b[*p : *p+1])
binary.Read(buf, *e, &i)
*p++
return
}
// Read bytes representing a sixteen bit integer.
func readInt16(b []byte, p *int, e *binary.ByteOrder) (i int16, err error) {
if *p < 0 {
return 0, fmt.Errorf("%d cannot be less than zero", *p)
}
if (*p + 2) > len(b) {
return 0, fmt.Errorf("%s's length is less than %d", b, *p+2)
}
buf := bytes.NewBuffer(b[*p : *p+2])
binary.Read(buf, *e, &i)
*p += 2
return
}
// Read bytes representing a thirty two bit integer.
func readInt32(b []byte, p *int, e *binary.ByteOrder) (i int32, err error) {
if *p < 0 {
return 0, fmt.Errorf("%d cannot be less than zero", *p)
}
if (*p + 4) > len(b) {
return 0, fmt.Errorf("%s's length is less than %d", b, *p+4)
}
buf := bytes.NewBuffer(b[*p : *p+4])
binary.Read(buf, *e, &i)
*p += 4
return
}
func readBytes(b []byte, p *int, s int, e *binary.ByteOrder) ([]byte, error) {
if s < 0 {
return nil, fmt.Errorf("%d cannot be less than zero", s)
}
i := *p + s
if i > len(b) {
return nil, fmt.Errorf("%s's length is greater than %d", b, i)
}
buf := bytes.NewBuffer(b[*p:i])
r := make([]byte, s)
if err := binary.Read(buf, *e, &r); err != nil {
return nil, err
}
*p += s
return r, nil
}
func isNativeEndianLittle() bool {
var x = 0x012345678
var p = unsafe.Pointer(&x)
var bp = (*[4]byte)(p)
var endian bool
if 0x01 == bp[0] {
endian = false
} else if (0x78 & 0xff) == (bp[0] & 0xff) {
endian = true
} else {
// Default to big endian
endian = false
}
return endian
}
// JSON return information about the keys held in the keytab in a JSON format.
func (k *Keytab) JSON() (string, error) {
b, err := json.MarshalIndent(k, "", " ")
if err != nil {
return "", err
}
return string(b), nil
}

67
vendor/github.com/jcmturner/gokrb5/v8/krberror/error.go generated vendored Normal file
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// Package krberror provides error type and functions for gokrb5.
package krberror
import (
"fmt"
"strings"
)
// Error type descriptions.
const (
separator = " < "
EncodingError = "Encoding_Error"
NetworkingError = "Networking_Error"
DecryptingError = "Decrypting_Error"
EncryptingError = "Encrypting_Error"
ChksumError = "Checksum_Error"
KRBMsgError = "KRBMessage_Handling_Error"
ConfigError = "Configuration_Error"
KDCError = "KDC_Error"
)
// Krberror is an error type for gokrb5
type Krberror struct {
RootCause string
EText []string
}
// Error function to implement the error interface.
func (e Krberror) Error() string {
return fmt.Sprintf("[Root cause: %s] ", e.RootCause) + strings.Join(e.EText, separator)
}
// Add another error statement to the error.
func (e *Krberror) Add(et string, s string) {
e.EText = append([]string{fmt.Sprintf("%s: %s", et, s)}, e.EText...)
}
// New creates a new instance of Krberror.
func New(et, s string) Krberror {
return Krberror{
RootCause: et,
EText: []string{s},
}
}
// Errorf appends to or creates a new Krberror.
func Errorf(err error, et, format string, a ...interface{}) Krberror {
if e, ok := err.(Krberror); ok {
e.Add(et, fmt.Sprintf(format, a...))
return e
}
return NewErrorf(et, format+": %s", append(a, err)...)
}
// NewErrorf creates a new Krberror from a formatted string.
func NewErrorf(et, format string, a ...interface{}) Krberror {
var s string
if len(a) > 0 {
s = fmt.Sprintf("%s: %s", et, fmt.Sprintf(format, a...))
} else {
s = fmt.Sprintf("%s: %s", et, format)
}
return Krberror{
RootCause: et,
EText: []string{s},
}
}

49
vendor/github.com/jcmturner/gokrb5/v8/messages/APRep.go generated vendored Normal file
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package messages
import (
"fmt"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
"github.com/jcmturner/gokrb5/v8/iana/msgtype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/types"
)
// APRep implements RFC 4120 KRB_AP_REP: https://tools.ietf.org/html/rfc4120#section-5.5.2.
type APRep struct {
PVNO int `asn1:"explicit,tag:0"`
MsgType int `asn1:"explicit,tag:1"`
EncPart types.EncryptedData `asn1:"explicit,tag:2"`
}
// EncAPRepPart is the encrypted part of KRB_AP_REP.
type EncAPRepPart struct {
CTime time.Time `asn1:"generalized,explicit,tag:0"`
Cusec int `asn1:"explicit,tag:1"`
Subkey types.EncryptionKey `asn1:"optional,explicit,tag:2"`
SequenceNumber int64 `asn1:"optional,explicit,tag:3"`
}
// Unmarshal bytes b into the APRep struct.
func (a *APRep) Unmarshal(b []byte) error {
_, err := asn1.UnmarshalWithParams(b, a, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.APREP))
if err != nil {
return processUnmarshalReplyError(b, err)
}
expectedMsgType := msgtype.KRB_AP_REP
if a.MsgType != expectedMsgType {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate a KRB_AP_REP. Expected: %v; Actual: %v", expectedMsgType, a.MsgType)
}
return nil
}
// Unmarshal bytes b into the APRep encrypted part struct.
func (a *EncAPRepPart) Unmarshal(b []byte) error {
_, err := asn1.UnmarshalWithParams(b, a, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.EncAPRepPart))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "AP_REP unmarshal error")
}
return nil
}

199
vendor/github.com/jcmturner/gokrb5/v8/messages/APReq.go generated vendored Normal file
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package messages
import (
"fmt"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/asn1tools"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/iana"
"github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
"github.com/jcmturner/gokrb5/v8/iana/errorcode"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/iana/msgtype"
"github.com/jcmturner/gokrb5/v8/keytab"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/types"
)
type marshalAPReq struct {
PVNO int `asn1:"explicit,tag:0"`
MsgType int `asn1:"explicit,tag:1"`
APOptions asn1.BitString `asn1:"explicit,tag:2"`
// Ticket needs to be a raw value as it is wrapped in an APPLICATION tag
Ticket asn1.RawValue `asn1:"explicit,tag:3"`
EncryptedAuthenticator types.EncryptedData `asn1:"explicit,tag:4"`
}
// APReq implements RFC 4120 KRB_AP_REQ: https://tools.ietf.org/html/rfc4120#section-5.5.1.
type APReq struct {
PVNO int `asn1:"explicit,tag:0"`
MsgType int `asn1:"explicit,tag:1"`
APOptions asn1.BitString `asn1:"explicit,tag:2"`
Ticket Ticket `asn1:"explicit,tag:3"`
EncryptedAuthenticator types.EncryptedData `asn1:"explicit,tag:4"`
Authenticator types.Authenticator `asn1:"optional"`
}
// NewAPReq generates a new KRB_AP_REQ struct.
func NewAPReq(tkt Ticket, sessionKey types.EncryptionKey, auth types.Authenticator) (APReq, error) {
var a APReq
ed, err := encryptAuthenticator(auth, sessionKey, tkt)
if err != nil {
return a, krberror.Errorf(err, krberror.KRBMsgError, "error creating Authenticator for AP_REQ")
}
a = APReq{
PVNO: iana.PVNO,
MsgType: msgtype.KRB_AP_REQ,
APOptions: types.NewKrbFlags(),
Ticket: tkt,
EncryptedAuthenticator: ed,
}
return a, nil
}
// Encrypt Authenticator
func encryptAuthenticator(a types.Authenticator, sessionKey types.EncryptionKey, tkt Ticket) (types.EncryptedData, error) {
var ed types.EncryptedData
m, err := a.Marshal()
if err != nil {
return ed, krberror.Errorf(err, krberror.EncodingError, "marshaling error of EncryptedData form of Authenticator")
}
usage := authenticatorKeyUsage(tkt.SName)
ed, err = crypto.GetEncryptedData(m, sessionKey, uint32(usage), tkt.EncPart.KVNO)
if err != nil {
return ed, krberror.Errorf(err, krberror.EncryptingError, "error encrypting Authenticator")
}
return ed, nil
}
// DecryptAuthenticator decrypts the Authenticator within the AP_REQ.
// sessionKey may simply be the key within the decrypted EncPart of the ticket within the AP_REQ.
func (a *APReq) DecryptAuthenticator(sessionKey types.EncryptionKey) error {
usage := authenticatorKeyUsage(a.Ticket.SName)
ab, e := crypto.DecryptEncPart(a.EncryptedAuthenticator, sessionKey, uint32(usage))
if e != nil {
return fmt.Errorf("error decrypting authenticator: %v", e)
}
err := a.Authenticator.Unmarshal(ab)
if err != nil {
return fmt.Errorf("error unmarshaling authenticator: %v", err)
}
return nil
}
func authenticatorKeyUsage(pn types.PrincipalName) int {
if pn.NameString[0] == "krbtgt" {
return keyusage.TGS_REQ_PA_TGS_REQ_AP_REQ_AUTHENTICATOR
}
return keyusage.AP_REQ_AUTHENTICATOR
}
// Unmarshal bytes b into the APReq struct.
func (a *APReq) Unmarshal(b []byte) error {
var m marshalAPReq
_, err := asn1.UnmarshalWithParams(b, &m, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.APREQ))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "unmarshal error of AP_REQ")
}
if m.MsgType != msgtype.KRB_AP_REQ {
return NewKRBError(types.PrincipalName{}, "", errorcode.KRB_AP_ERR_MSG_TYPE, errorcode.Lookup(errorcode.KRB_AP_ERR_MSG_TYPE))
}
a.PVNO = m.PVNO
a.MsgType = m.MsgType
a.APOptions = m.APOptions
a.EncryptedAuthenticator = m.EncryptedAuthenticator
a.Ticket, err = unmarshalTicket(m.Ticket.Bytes)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "unmarshaling error of Ticket within AP_REQ")
}
return nil
}
// Marshal APReq struct.
func (a *APReq) Marshal() ([]byte, error) {
m := marshalAPReq{
PVNO: a.PVNO,
MsgType: a.MsgType,
APOptions: a.APOptions,
EncryptedAuthenticator: a.EncryptedAuthenticator,
}
var b []byte
b, err := a.Ticket.Marshal()
if err != nil {
return b, err
}
m.Ticket = asn1.RawValue{
Class: asn1.ClassContextSpecific,
IsCompound: true,
Tag: 3,
Bytes: b,
}
mk, err := asn1.Marshal(m)
if err != nil {
return mk, krberror.Errorf(err, krberror.EncodingError, "marshaling error of AP_REQ")
}
mk = asn1tools.AddASNAppTag(mk, asnAppTag.APREQ)
return mk, nil
}
// Verify an AP_REQ using service's keytab, spn and max acceptable clock skew duration.
// The service ticket encrypted part and authenticator will be decrypted as part of this operation.
func (a *APReq) Verify(kt *keytab.Keytab, d time.Duration, cAddr types.HostAddress, snameOverride *types.PrincipalName) (bool, error) {
// Decrypt ticket's encrypted part with service key
//TODO decrypt with service's session key from its TGT is use-to-user. Need to figure out how to get TGT.
//if types.IsFlagSet(&a.APOptions, flags.APOptionUseSessionKey) {
// err := a.Ticket.Decrypt(tgt.DecryptedEncPart.Key)
// if err != nil {
// return false, krberror.Errorf(err, krberror.DecryptingError, "error decrypting encpart of ticket provided using session key")
// }
//} else {
// err := a.Ticket.DecryptEncPart(*kt, &a.Ticket.SName)
// if err != nil {
// return false, krberror.Errorf(err, krberror.DecryptingError, "error decrypting encpart of service ticket provided")
// }
//}
sname := &a.Ticket.SName
if snameOverride != nil {
sname = snameOverride
}
err := a.Ticket.DecryptEncPart(kt, sname)
if err != nil {
return false, krberror.Errorf(err, krberror.DecryptingError, "error decrypting encpart of service ticket provided")
}
// Check time validity of ticket
ok, err := a.Ticket.Valid(d)
if err != nil || !ok {
return ok, err
}
// Check client's address is listed in the client addresses in the ticket
if len(a.Ticket.DecryptedEncPart.CAddr) > 0 {
//If client addresses are present check if any of them match the source IP that sent the APReq
//If there is no match return KRB_AP_ERR_BADADDR error.
if !types.HostAddressesContains(a.Ticket.DecryptedEncPart.CAddr, cAddr) {
return false, NewKRBError(a.Ticket.SName, a.Ticket.Realm, errorcode.KRB_AP_ERR_BADADDR, "client address not within the list contained in the service ticket")
}
}
// Decrypt authenticator with session key from ticket's encrypted part
err = a.DecryptAuthenticator(a.Ticket.DecryptedEncPart.Key)
if err != nil {
return false, NewKRBError(a.Ticket.SName, a.Ticket.Realm, errorcode.KRB_AP_ERR_BAD_INTEGRITY, "could not decrypt authenticator")
}
// Check CName in authenticator is the same as that in the ticket
if !a.Authenticator.CName.Equal(a.Ticket.DecryptedEncPart.CName) {
return false, NewKRBError(a.Ticket.SName, a.Ticket.Realm, errorcode.KRB_AP_ERR_BADMATCH, "CName in Authenticator does not match that in service ticket")
}
// Check the clock skew between the client and the service server
ct := a.Authenticator.CTime.Add(time.Duration(a.Authenticator.Cusec) * time.Microsecond)
t := time.Now().UTC()
if t.Sub(ct) > d || ct.Sub(t) > d {
return false, NewKRBError(a.Ticket.SName, a.Ticket.Realm, errorcode.KRB_AP_ERR_SKEW, fmt.Sprintf("clock skew with client too large. greater than %v seconds", d))
}
return true, nil
}

308
vendor/github.com/jcmturner/gokrb5/v8/messages/KDCRep.go generated vendored Normal file
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@ -0,0 +1,308 @@
package messages
// Reference: https://www.ietf.org/rfc/rfc4120.txt
// Section: 5.4.2
import (
"fmt"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/config"
"github.com/jcmturner/gokrb5/v8/credentials"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
"github.com/jcmturner/gokrb5/v8/iana/flags"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/iana/msgtype"
"github.com/jcmturner/gokrb5/v8/iana/patype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/types"
)
type marshalKDCRep struct {
PVNO int `asn1:"explicit,tag:0"`
MsgType int `asn1:"explicit,tag:1"`
PAData types.PADataSequence `asn1:"explicit,optional,tag:2"`
CRealm string `asn1:"generalstring,explicit,tag:3"`
CName types.PrincipalName `asn1:"explicit,tag:4"`
// Ticket needs to be a raw value as it is wrapped in an APPLICATION tag
Ticket asn1.RawValue `asn1:"explicit,tag:5"`
EncPart types.EncryptedData `asn1:"explicit,tag:6"`
}
// KDCRepFields represents the KRB_KDC_REP fields.
type KDCRepFields struct {
PVNO int
MsgType int
PAData []types.PAData
CRealm string
CName types.PrincipalName
Ticket Ticket
EncPart types.EncryptedData
DecryptedEncPart EncKDCRepPart
}
// ASRep implements RFC 4120 KRB_AS_REP: https://tools.ietf.org/html/rfc4120#section-5.4.2.
type ASRep struct {
KDCRepFields
}
// TGSRep implements RFC 4120 KRB_TGS_REP: https://tools.ietf.org/html/rfc4120#section-5.4.2.
type TGSRep struct {
KDCRepFields
}
// EncKDCRepPart is the encrypted part of KRB_KDC_REP.
type EncKDCRepPart struct {
Key types.EncryptionKey `asn1:"explicit,tag:0"`
LastReqs []LastReq `asn1:"explicit,tag:1"`
Nonce int `asn1:"explicit,tag:2"`
KeyExpiration time.Time `asn1:"generalized,explicit,optional,tag:3"`
Flags asn1.BitString `asn1:"explicit,tag:4"`
AuthTime time.Time `asn1:"generalized,explicit,tag:5"`
StartTime time.Time `asn1:"generalized,explicit,optional,tag:6"`
EndTime time.Time `asn1:"generalized,explicit,tag:7"`
RenewTill time.Time `asn1:"generalized,explicit,optional,tag:8"`
SRealm string `asn1:"generalstring,explicit,tag:9"`
SName types.PrincipalName `asn1:"explicit,tag:10"`
CAddr []types.HostAddress `asn1:"explicit,optional,tag:11"`
EncPAData types.PADataSequence `asn1:"explicit,optional,tag:12"`
}
// LastReq part of KRB_KDC_REP.
type LastReq struct {
LRType int32 `asn1:"explicit,tag:0"`
LRValue time.Time `asn1:"generalized,explicit,tag:1"`
}
// Unmarshal bytes b into the ASRep struct.
func (k *ASRep) Unmarshal(b []byte) error {
var m marshalKDCRep
_, err := asn1.UnmarshalWithParams(b, &m, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.ASREP))
if err != nil {
return processUnmarshalReplyError(b, err)
}
if m.MsgType != msgtype.KRB_AS_REP {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate an AS_REP. Expected: %v; Actual: %v", msgtype.KRB_AS_REP, m.MsgType)
}
//Process the raw ticket within
tkt, err := unmarshalTicket(m.Ticket.Bytes)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling Ticket within AS_REP")
}
k.KDCRepFields = KDCRepFields{
PVNO: m.PVNO,
MsgType: m.MsgType,
PAData: m.PAData,
CRealm: m.CRealm,
CName: m.CName,
Ticket: tkt,
EncPart: m.EncPart,
}
return nil
}
// Unmarshal bytes b into the TGSRep struct.
func (k *TGSRep) Unmarshal(b []byte) error {
var m marshalKDCRep
_, err := asn1.UnmarshalWithParams(b, &m, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.TGSREP))
if err != nil {
return processUnmarshalReplyError(b, err)
}
if m.MsgType != msgtype.KRB_TGS_REP {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate an TGS_REP. Expected: %v; Actual: %v", msgtype.KRB_TGS_REP, m.MsgType)
}
//Process the raw ticket within
tkt, err := unmarshalTicket(m.Ticket.Bytes)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling Ticket within TGS_REP")
}
k.KDCRepFields = KDCRepFields{
PVNO: m.PVNO,
MsgType: m.MsgType,
PAData: m.PAData,
CRealm: m.CRealm,
CName: m.CName,
Ticket: tkt,
EncPart: m.EncPart,
}
return nil
}
// Unmarshal bytes b into encrypted part of KRB_KDC_REP.
func (e *EncKDCRepPart) Unmarshal(b []byte) error {
_, err := asn1.UnmarshalWithParams(b, e, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.EncASRepPart))
if err != nil {
// Try using tag 26
// Ref: RFC 4120 - mentions that some implementations use application tag number 26 wether or not the reply is
// a AS-REP or a TGS-REP.
_, err = asn1.UnmarshalWithParams(b, e, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.EncTGSRepPart))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling encrypted part within KDC_REP")
}
}
return nil
}
// DecryptEncPart decrypts the encrypted part of an AS_REP.
func (k *ASRep) DecryptEncPart(c *credentials.Credentials) (types.EncryptionKey, error) {
var key types.EncryptionKey
var err error
if c.HasKeytab() {
key, _, err = c.Keytab().GetEncryptionKey(k.CName, k.CRealm, k.EncPart.KVNO, k.EncPart.EType)
if err != nil {
return key, krberror.Errorf(err, krberror.DecryptingError, "error decrypting AS_REP encrypted part")
}
}
if c.HasPassword() {
key, _, err = crypto.GetKeyFromPassword(c.Password(), k.CName, k.CRealm, k.EncPart.EType, k.PAData)
if err != nil {
return key, krberror.Errorf(err, krberror.DecryptingError, "error decrypting AS_REP encrypted part")
}
}
if !c.HasKeytab() && !c.HasPassword() {
return key, krberror.NewErrorf(krberror.DecryptingError, "no secret available in credentials to perform decryption of AS_REP encrypted part")
}
b, err := crypto.DecryptEncPart(k.EncPart, key, keyusage.AS_REP_ENCPART)
if err != nil {
return key, krberror.Errorf(err, krberror.DecryptingError, "error decrypting AS_REP encrypted part")
}
var denc EncKDCRepPart
err = denc.Unmarshal(b)
if err != nil {
return key, krberror.Errorf(err, krberror.EncodingError, "error unmarshaling decrypted encpart of AS_REP")
}
k.DecryptedEncPart = denc
return key, nil
}
// Verify checks the validity of AS_REP message.
func (k *ASRep) Verify(cfg *config.Config, creds *credentials.Credentials, asReq ASReq) (bool, error) {
//Ref RFC 4120 Section 3.1.5
if k.CName.NameType != asReq.ReqBody.CName.NameType || k.CName.NameString == nil {
return false, krberror.NewErrorf(krberror.KRBMsgError, "CName in response does not match what was requested. Requested: %+v; Reply: %+v", asReq.ReqBody.CName, k.CName)
}
for i := range k.CName.NameString {
if k.CName.NameString[i] != asReq.ReqBody.CName.NameString[i] {
return false, krberror.NewErrorf(krberror.KRBMsgError, "CName in response does not match what was requested. Requested: %+v; Reply: %+v", asReq.ReqBody.CName, k.CName)
}
}
if k.CRealm != asReq.ReqBody.Realm {
return false, krberror.NewErrorf(krberror.KRBMsgError, "CRealm in response does not match what was requested. Requested: %s; Reply: %s", asReq.ReqBody.Realm, k.CRealm)
}
key, err := k.DecryptEncPart(creds)
if err != nil {
return false, krberror.Errorf(err, krberror.DecryptingError, "error decrypting EncPart of AS_REP")
}
if k.DecryptedEncPart.Nonce != asReq.ReqBody.Nonce {
return false, krberror.NewErrorf(krberror.KRBMsgError, "possible replay attack, nonce in response does not match that in request")
}
if k.DecryptedEncPart.SName.NameType != asReq.ReqBody.SName.NameType || k.DecryptedEncPart.SName.NameString == nil {
return false, krberror.NewErrorf(krberror.KRBMsgError, "SName in response does not match what was requested. Requested: %v; Reply: %v", asReq.ReqBody.SName, k.DecryptedEncPart.SName)
}
for i := range k.CName.NameString {
if k.DecryptedEncPart.SName.NameString[i] != asReq.ReqBody.SName.NameString[i] {
return false, krberror.NewErrorf(krberror.KRBMsgError, "SName in response does not match what was requested. Requested: %+v; Reply: %+v", asReq.ReqBody.SName, k.DecryptedEncPart.SName)
}
}
if k.DecryptedEncPart.SRealm != asReq.ReqBody.Realm {
return false, krberror.NewErrorf(krberror.KRBMsgError, "SRealm in response does not match what was requested. Requested: %s; Reply: %s", asReq.ReqBody.Realm, k.DecryptedEncPart.SRealm)
}
if len(asReq.ReqBody.Addresses) > 0 {
if !types.HostAddressesEqual(k.DecryptedEncPart.CAddr, asReq.ReqBody.Addresses) {
return false, krberror.NewErrorf(krberror.KRBMsgError, "addresses listed in the AS_REP does not match those listed in the AS_REQ")
}
}
t := time.Now().UTC()
if t.Sub(k.DecryptedEncPart.AuthTime) > cfg.LibDefaults.Clockskew || k.DecryptedEncPart.AuthTime.Sub(t) > cfg.LibDefaults.Clockskew {
return false, krberror.NewErrorf(krberror.KRBMsgError, "clock skew with KDC too large. Greater than %v seconds", cfg.LibDefaults.Clockskew.Seconds())
}
// RFC 6806 https://tools.ietf.org/html/rfc6806.html#section-11
if asReq.PAData.Contains(patype.PA_REQ_ENC_PA_REP) && types.IsFlagSet(&k.DecryptedEncPart.Flags, flags.EncPARep) {
if len(k.DecryptedEncPart.EncPAData) < 2 || !k.DecryptedEncPart.EncPAData.Contains(patype.PA_FX_FAST) {
return false, krberror.NewErrorf(krberror.KRBMsgError, "KDC did not respond appropriately to FAST negotiation")
}
for _, pa := range k.DecryptedEncPart.EncPAData {
if pa.PADataType == patype.PA_REQ_ENC_PA_REP {
var pafast types.PAReqEncPARep
err := pafast.Unmarshal(pa.PADataValue)
if err != nil {
return false, krberror.Errorf(err, krberror.EncodingError, "KDC FAST negotiation response error, could not unmarshal PA_REQ_ENC_PA_REP")
}
etype, err := crypto.GetChksumEtype(pafast.ChksumType)
if err != nil {
return false, krberror.Errorf(err, krberror.ChksumError, "KDC FAST negotiation response error")
}
ab, _ := asReq.Marshal()
if !etype.VerifyChecksum(key.KeyValue, ab, pafast.Chksum, keyusage.KEY_USAGE_AS_REQ) {
return false, krberror.Errorf(err, krberror.ChksumError, "KDC FAST negotiation response checksum invalid")
}
}
}
}
return true, nil
}
// DecryptEncPart decrypts the encrypted part of an TGS_REP.
func (k *TGSRep) DecryptEncPart(key types.EncryptionKey) error {
b, err := crypto.DecryptEncPart(k.EncPart, key, keyusage.TGS_REP_ENCPART_SESSION_KEY)
if err != nil {
return krberror.Errorf(err, krberror.DecryptingError, "error decrypting TGS_REP EncPart")
}
var denc EncKDCRepPart
err = denc.Unmarshal(b)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling encrypted part")
}
k.DecryptedEncPart = denc
return nil
}
// Verify checks the validity of the TGS_REP message.
func (k *TGSRep) Verify(cfg *config.Config, tgsReq TGSReq) (bool, error) {
if k.CName.NameType != tgsReq.ReqBody.CName.NameType || k.CName.NameString == nil {
return false, krberror.NewErrorf(krberror.KRBMsgError, "CName type in response does not match what was requested. Requested: %+v; Reply: %+v", tgsReq.ReqBody.CName, k.CName)
}
for i := range k.CName.NameString {
if k.CName.NameString[i] != tgsReq.ReqBody.CName.NameString[i] {
return false, krberror.NewErrorf(krberror.KRBMsgError, "CName in response does not match what was requested. Requested: %+v; Reply: %+v", tgsReq.ReqBody.CName, k.CName)
}
}
if k.Ticket.Realm != tgsReq.ReqBody.Realm {
return false, krberror.NewErrorf(krberror.KRBMsgError, "realm in response ticket does not match what was requested. Requested: %s; Reply: %s", tgsReq.ReqBody.Realm, k.Ticket.Realm)
}
if k.DecryptedEncPart.Nonce != tgsReq.ReqBody.Nonce {
return false, krberror.NewErrorf(krberror.KRBMsgError, "possible replay attack, nonce in response does not match that in request")
}
//if k.Ticket.SName.NameType != tgsReq.ReqBody.SName.NameType || k.Ticket.SName.NameString == nil {
// return false, krberror.NewErrorf(krberror.KRBMsgError, "SName in response ticket does not match what was requested. Requested: %v; Reply: %v", tgsReq.ReqBody.SName, k.Ticket.SName)
//}
//for i := range k.Ticket.SName.NameString {
// if k.Ticket.SName.NameString[i] != tgsReq.ReqBody.SName.NameString[i] {
// return false, krberror.NewErrorf(krberror.KRBMsgError, "SName in response ticket does not match what was requested. Requested: %+v; Reply: %+v", tgsReq.ReqBody.SName, k.Ticket.SName)
// }
//}
//if k.DecryptedEncPart.SName.NameType != tgsReq.ReqBody.SName.NameType || k.DecryptedEncPart.SName.NameString == nil {
// return false, krberror.NewErrorf(krberror.KRBMsgError, "SName in response does not match what was requested. Requested: %v; Reply: %v", tgsReq.ReqBody.SName, k.DecryptedEncPart.SName)
//}
//for i := range k.DecryptedEncPart.SName.NameString {
// if k.DecryptedEncPart.SName.NameString[i] != tgsReq.ReqBody.SName.NameString[i] {
// return false, krberror.NewErrorf(krberror.KRBMsgError, "SName in response does not match what was requested. Requested: %+v; Reply: %+v", tgsReq.ReqBody.SName, k.DecryptedEncPart.SName)
// }
//}
if k.DecryptedEncPart.SRealm != tgsReq.ReqBody.Realm {
return false, krberror.NewErrorf(krberror.KRBMsgError, "SRealm in response does not match what was requested. Requested: %s; Reply: %s", tgsReq.ReqBody.Realm, k.DecryptedEncPart.SRealm)
}
if len(k.DecryptedEncPart.CAddr) > 0 {
if !types.HostAddressesEqual(k.DecryptedEncPart.CAddr, tgsReq.ReqBody.Addresses) {
return false, krberror.NewErrorf(krberror.KRBMsgError, "addresses listed in the TGS_REP does not match those listed in the TGS_REQ")
}
}
if time.Since(k.DecryptedEncPart.StartTime) > cfg.LibDefaults.Clockskew || k.DecryptedEncPart.StartTime.Sub(time.Now().UTC()) > cfg.LibDefaults.Clockskew {
if time.Since(k.DecryptedEncPart.AuthTime) > cfg.LibDefaults.Clockskew || k.DecryptedEncPart.AuthTime.Sub(time.Now().UTC()) > cfg.LibDefaults.Clockskew {
return false, krberror.NewErrorf(krberror.KRBMsgError, "clock skew with KDC too large. Greater than %v seconds.", cfg.LibDefaults.Clockskew.Seconds())
}
}
return true, nil
}

432
vendor/github.com/jcmturner/gokrb5/v8/messages/KDCReq.go generated vendored Normal file
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@ -0,0 +1,432 @@
package messages
// Reference: https://www.ietf.org/rfc/rfc4120.txt
// Section: 5.4.1
import (
"crypto/rand"
"fmt"
"math"
"math/big"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/asn1tools"
"github.com/jcmturner/gokrb5/v8/config"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/iana"
"github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
"github.com/jcmturner/gokrb5/v8/iana/flags"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/iana/msgtype"
"github.com/jcmturner/gokrb5/v8/iana/nametype"
"github.com/jcmturner/gokrb5/v8/iana/patype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/types"
)
type marshalKDCReq struct {
PVNO int `asn1:"explicit,tag:1"`
MsgType int `asn1:"explicit,tag:2"`
PAData types.PADataSequence `asn1:"explicit,optional,tag:3"`
ReqBody asn1.RawValue `asn1:"explicit,tag:4"`
}
// KDCReqFields represents the KRB_KDC_REQ fields.
type KDCReqFields struct {
PVNO int
MsgType int
PAData types.PADataSequence
ReqBody KDCReqBody
Renewal bool
}
// ASReq implements RFC 4120 KRB_AS_REQ: https://tools.ietf.org/html/rfc4120#section-5.4.1.
type ASReq struct {
KDCReqFields
}
// TGSReq implements RFC 4120 KRB_TGS_REQ: https://tools.ietf.org/html/rfc4120#section-5.4.1.
type TGSReq struct {
KDCReqFields
}
type marshalKDCReqBody struct {
KDCOptions asn1.BitString `asn1:"explicit,tag:0"`
CName types.PrincipalName `asn1:"explicit,optional,tag:1"`
Realm string `asn1:"generalstring,explicit,tag:2"`
SName types.PrincipalName `asn1:"explicit,optional,tag:3"`
From time.Time `asn1:"generalized,explicit,optional,tag:4"`
Till time.Time `asn1:"generalized,explicit,tag:5"`
RTime time.Time `asn1:"generalized,explicit,optional,tag:6"`
Nonce int `asn1:"explicit,tag:7"`
EType []int32 `asn1:"explicit,tag:8"`
Addresses []types.HostAddress `asn1:"explicit,optional,tag:9"`
EncAuthData types.EncryptedData `asn1:"explicit,optional,tag:10"`
// Ticket needs to be a raw value as it is wrapped in an APPLICATION tag
AdditionalTickets asn1.RawValue `asn1:"explicit,optional,tag:11"`
}
// KDCReqBody implements the KRB_KDC_REQ request body.
type KDCReqBody struct {
KDCOptions asn1.BitString `asn1:"explicit,tag:0"`
CName types.PrincipalName `asn1:"explicit,optional,tag:1"`
Realm string `asn1:"generalstring,explicit,tag:2"`
SName types.PrincipalName `asn1:"explicit,optional,tag:3"`
From time.Time `asn1:"generalized,explicit,optional,tag:4"`
Till time.Time `asn1:"generalized,explicit,tag:5"`
RTime time.Time `asn1:"generalized,explicit,optional,tag:6"`
Nonce int `asn1:"explicit,tag:7"`
EType []int32 `asn1:"explicit,tag:8"`
Addresses []types.HostAddress `asn1:"explicit,optional,tag:9"`
EncAuthData types.EncryptedData `asn1:"explicit,optional,tag:10"`
AdditionalTickets []Ticket `asn1:"explicit,optional,tag:11"`
}
// NewASReqForTGT generates a new KRB_AS_REQ struct for a TGT request.
func NewASReqForTGT(realm string, c *config.Config, cname types.PrincipalName) (ASReq, error) {
sname := types.PrincipalName{
NameType: nametype.KRB_NT_SRV_INST,
NameString: []string{"krbtgt", realm},
}
return NewASReq(realm, c, cname, sname)
}
// NewASReqForChgPasswd generates a new KRB_AS_REQ struct for a change password request.
func NewASReqForChgPasswd(realm string, c *config.Config, cname types.PrincipalName) (ASReq, error) {
sname := types.PrincipalName{
NameType: nametype.KRB_NT_PRINCIPAL,
NameString: []string{"kadmin", "changepw"},
}
return NewASReq(realm, c, cname, sname)
}
// NewASReq generates a new KRB_AS_REQ struct for a given SNAME.
func NewASReq(realm string, c *config.Config, cname, sname types.PrincipalName) (ASReq, error) {
nonce, err := rand.Int(rand.Reader, big.NewInt(math.MaxInt32))
if err != nil {
return ASReq{}, err
}
t := time.Now().UTC()
// Copy the default options to make this thread safe
kopts := types.NewKrbFlags()
copy(kopts.Bytes, c.LibDefaults.KDCDefaultOptions.Bytes)
kopts.BitLength = c.LibDefaults.KDCDefaultOptions.BitLength
a := ASReq{
KDCReqFields{
PVNO: iana.PVNO,
MsgType: msgtype.KRB_AS_REQ,
PAData: types.PADataSequence{},
ReqBody: KDCReqBody{
KDCOptions: kopts,
Realm: realm,
CName: cname,
SName: sname,
Till: t.Add(c.LibDefaults.TicketLifetime),
Nonce: int(nonce.Int64()),
EType: c.LibDefaults.DefaultTktEnctypeIDs,
},
},
}
if c.LibDefaults.Forwardable {
types.SetFlag(&a.ReqBody.KDCOptions, flags.Forwardable)
}
if c.LibDefaults.Canonicalize {
types.SetFlag(&a.ReqBody.KDCOptions, flags.Canonicalize)
}
if c.LibDefaults.Proxiable {
types.SetFlag(&a.ReqBody.KDCOptions, flags.Proxiable)
}
if c.LibDefaults.RenewLifetime != 0 {
types.SetFlag(&a.ReqBody.KDCOptions, flags.Renewable)
a.ReqBody.RTime = t.Add(c.LibDefaults.RenewLifetime)
a.ReqBody.RTime = t.Add(time.Duration(48) * time.Hour)
}
if !c.LibDefaults.NoAddresses {
ha, err := types.LocalHostAddresses()
if err != nil {
return a, fmt.Errorf("could not get local addresses: %v", err)
}
ha = append(ha, types.HostAddressesFromNetIPs(c.LibDefaults.ExtraAddresses)...)
a.ReqBody.Addresses = ha
}
return a, nil
}
// NewTGSReq generates a new KRB_TGS_REQ struct.
func NewTGSReq(cname types.PrincipalName, kdcRealm string, c *config.Config, tgt Ticket, sessionKey types.EncryptionKey, sname types.PrincipalName, renewal bool) (TGSReq, error) {
a, err := tgsReq(cname, sname, kdcRealm, renewal, c)
if err != nil {
return a, err
}
err = a.setPAData(tgt, sessionKey)
return a, err
}
// NewUser2UserTGSReq returns a TGS-REQ suitable for user-to-user authentication (https://tools.ietf.org/html/rfc4120#section-3.7)
func NewUser2UserTGSReq(cname types.PrincipalName, kdcRealm string, c *config.Config, clientTGT Ticket, sessionKey types.EncryptionKey, sname types.PrincipalName, renewal bool, verifyingTGT Ticket) (TGSReq, error) {
a, err := tgsReq(cname, sname, kdcRealm, renewal, c)
if err != nil {
return a, err
}
a.ReqBody.AdditionalTickets = []Ticket{verifyingTGT}
types.SetFlag(&a.ReqBody.KDCOptions, flags.EncTktInSkey)
err = a.setPAData(clientTGT, sessionKey)
return a, err
}
// tgsReq populates the fields for a TGS_REQ
func tgsReq(cname, sname types.PrincipalName, kdcRealm string, renewal bool, c *config.Config) (TGSReq, error) {
nonce, err := rand.Int(rand.Reader, big.NewInt(math.MaxInt32))
if err != nil {
return TGSReq{}, err
}
t := time.Now().UTC()
k := KDCReqFields{
PVNO: iana.PVNO,
MsgType: msgtype.KRB_TGS_REQ,
ReqBody: KDCReqBody{
KDCOptions: types.NewKrbFlags(),
Realm: kdcRealm,
CName: cname, // Add the CName to make validation of the reply easier
SName: sname,
Till: t.Add(c.LibDefaults.TicketLifetime),
Nonce: int(nonce.Int64()),
EType: c.LibDefaults.DefaultTGSEnctypeIDs,
},
Renewal: renewal,
}
if c.LibDefaults.Forwardable {
types.SetFlag(&k.ReqBody.KDCOptions, flags.Forwardable)
}
if c.LibDefaults.Canonicalize {
types.SetFlag(&k.ReqBody.KDCOptions, flags.Canonicalize)
}
if c.LibDefaults.Proxiable {
types.SetFlag(&k.ReqBody.KDCOptions, flags.Proxiable)
}
if c.LibDefaults.RenewLifetime > time.Duration(0) {
types.SetFlag(&k.ReqBody.KDCOptions, flags.Renewable)
k.ReqBody.RTime = t.Add(c.LibDefaults.RenewLifetime)
}
if !c.LibDefaults.NoAddresses {
ha, err := types.LocalHostAddresses()
if err != nil {
return TGSReq{}, fmt.Errorf("could not get local addresses: %v", err)
}
ha = append(ha, types.HostAddressesFromNetIPs(c.LibDefaults.ExtraAddresses)...)
k.ReqBody.Addresses = ha
}
if renewal {
types.SetFlag(&k.ReqBody.KDCOptions, flags.Renew)
types.SetFlag(&k.ReqBody.KDCOptions, flags.Renewable)
}
return TGSReq{
k,
}, nil
}
func (k *TGSReq) setPAData(tgt Ticket, sessionKey types.EncryptionKey) error {
// Marshal the request and calculate checksum
b, err := k.ReqBody.Marshal()
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error marshaling TGS_REQ body")
}
etype, err := crypto.GetEtype(sessionKey.KeyType)
if err != nil {
return krberror.Errorf(err, krberror.EncryptingError, "error getting etype to encrypt authenticator")
}
cb, err := etype.GetChecksumHash(sessionKey.KeyValue, b, keyusage.TGS_REQ_PA_TGS_REQ_AP_REQ_AUTHENTICATOR_CHKSUM)
if err != nil {
return krberror.Errorf(err, krberror.ChksumError, "error getting etype checksum hash")
}
// Form PAData for TGS_REQ
// Create authenticator
auth, err := types.NewAuthenticator(tgt.Realm, k.ReqBody.CName)
if err != nil {
return krberror.Errorf(err, krberror.KRBMsgError, "error generating new authenticator")
}
auth.Cksum = types.Checksum{
CksumType: etype.GetHashID(),
Checksum: cb,
}
// Create AP_REQ
apReq, err := NewAPReq(tgt, sessionKey, auth)
if err != nil {
return krberror.Errorf(err, krberror.KRBMsgError, "error generating new AP_REQ")
}
apb, err := apReq.Marshal()
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error marshaling AP_REQ for pre-authentication data")
}
k.PAData = types.PADataSequence{
types.PAData{
PADataType: patype.PA_TGS_REQ,
PADataValue: apb,
},
}
return nil
}
// Unmarshal bytes b into the ASReq struct.
func (k *ASReq) Unmarshal(b []byte) error {
var m marshalKDCReq
_, err := asn1.UnmarshalWithParams(b, &m, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.ASREQ))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling AS_REQ")
}
expectedMsgType := msgtype.KRB_AS_REQ
if m.MsgType != expectedMsgType {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate a AS_REQ. Expected: %v; Actual: %v", expectedMsgType, m.MsgType)
}
var reqb KDCReqBody
err = reqb.Unmarshal(m.ReqBody.Bytes)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error processing AS_REQ body")
}
k.MsgType = m.MsgType
k.PAData = m.PAData
k.PVNO = m.PVNO
k.ReqBody = reqb
return nil
}
// Unmarshal bytes b into the TGSReq struct.
func (k *TGSReq) Unmarshal(b []byte) error {
var m marshalKDCReq
_, err := asn1.UnmarshalWithParams(b, &m, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.TGSREQ))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling TGS_REQ")
}
expectedMsgType := msgtype.KRB_TGS_REQ
if m.MsgType != expectedMsgType {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate a TGS_REQ. Expected: %v; Actual: %v", expectedMsgType, m.MsgType)
}
var reqb KDCReqBody
err = reqb.Unmarshal(m.ReqBody.Bytes)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error processing TGS_REQ body")
}
k.MsgType = m.MsgType
k.PAData = m.PAData
k.PVNO = m.PVNO
k.ReqBody = reqb
return nil
}
// Unmarshal bytes b into the KRB_KDC_REQ body struct.
func (k *KDCReqBody) Unmarshal(b []byte) error {
var m marshalKDCReqBody
_, err := asn1.Unmarshal(b, &m)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling KDC_REQ body")
}
k.KDCOptions = m.KDCOptions
if len(k.KDCOptions.Bytes) < 4 {
tb := make([]byte, 4-len(k.KDCOptions.Bytes))
k.KDCOptions.Bytes = append(tb, k.KDCOptions.Bytes...)
k.KDCOptions.BitLength = len(k.KDCOptions.Bytes) * 8
}
k.CName = m.CName
k.Realm = m.Realm
k.SName = m.SName
k.From = m.From
k.Till = m.Till
k.RTime = m.RTime
k.Nonce = m.Nonce
k.EType = m.EType
k.Addresses = m.Addresses
k.EncAuthData = m.EncAuthData
if len(m.AdditionalTickets.Bytes) > 0 {
k.AdditionalTickets, err = unmarshalTicketsSequence(m.AdditionalTickets)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling additional tickets")
}
}
return nil
}
// Marshal ASReq struct.
func (k *ASReq) Marshal() ([]byte, error) {
m := marshalKDCReq{
PVNO: k.PVNO,
MsgType: k.MsgType,
PAData: k.PAData,
}
b, err := k.ReqBody.Marshal()
if err != nil {
var mk []byte
return mk, err
}
m.ReqBody = asn1.RawValue{
Class: asn1.ClassContextSpecific,
IsCompound: true,
Tag: 4,
Bytes: b,
}
mk, err := asn1.Marshal(m)
if err != nil {
return mk, krberror.Errorf(err, krberror.EncodingError, "error marshaling AS_REQ")
}
mk = asn1tools.AddASNAppTag(mk, asnAppTag.ASREQ)
return mk, nil
}
// Marshal TGSReq struct.
func (k *TGSReq) Marshal() ([]byte, error) {
m := marshalKDCReq{
PVNO: k.PVNO,
MsgType: k.MsgType,
PAData: k.PAData,
}
b, err := k.ReqBody.Marshal()
if err != nil {
var mk []byte
return mk, err
}
m.ReqBody = asn1.RawValue{
Class: asn1.ClassContextSpecific,
IsCompound: true,
Tag: 4,
Bytes: b,
}
mk, err := asn1.Marshal(m)
if err != nil {
return mk, krberror.Errorf(err, krberror.EncodingError, "error marshaling AS_REQ")
}
mk = asn1tools.AddASNAppTag(mk, asnAppTag.TGSREQ)
return mk, nil
}
// Marshal KRB_KDC_REQ body struct.
func (k *KDCReqBody) Marshal() ([]byte, error) {
var b []byte
m := marshalKDCReqBody{
KDCOptions: k.KDCOptions,
CName: k.CName,
Realm: k.Realm,
SName: k.SName,
From: k.From,
Till: k.Till,
RTime: k.RTime,
Nonce: k.Nonce,
EType: k.EType,
Addresses: k.Addresses,
EncAuthData: k.EncAuthData,
}
rawtkts, err := MarshalTicketSequence(k.AdditionalTickets)
if err != nil {
return b, krberror.Errorf(err, krberror.EncodingError, "error in marshaling KDC request body additional tickets")
}
//The asn1.rawValue needs the tag setting on it for where it is in the KDCReqBody
rawtkts.Tag = 11
if len(rawtkts.Bytes) > 0 {
m.AdditionalTickets = rawtkts
}
b, err = asn1.Marshal(m)
if err != nil {
return b, krberror.Errorf(err, krberror.EncodingError, "error in marshaling KDC request body")
}
return b, nil
}

102
vendor/github.com/jcmturner/gokrb5/v8/messages/KRBCred.go generated vendored Normal file
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@ -0,0 +1,102 @@
package messages
import (
"fmt"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/iana/msgtype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/types"
)
type marshalKRBCred struct {
PVNO int `asn1:"explicit,tag:0"`
MsgType int `asn1:"explicit,tag:1"`
Tickets asn1.RawValue `asn1:"explicit,tag:2"`
EncPart types.EncryptedData `asn1:"explicit,tag:3"`
}
// KRBCred implements RFC 4120 KRB_CRED: https://tools.ietf.org/html/rfc4120#section-5.8.1.
type KRBCred struct {
PVNO int
MsgType int
Tickets []Ticket
EncPart types.EncryptedData
DecryptedEncPart EncKrbCredPart
}
// EncKrbCredPart is the encrypted part of KRB_CRED.
type EncKrbCredPart struct {
TicketInfo []KrbCredInfo `asn1:"explicit,tag:0"`
Nouce int `asn1:"optional,explicit,tag:1"`
Timestamp time.Time `asn1:"generalized,optional,explicit,tag:2"`
Usec int `asn1:"optional,explicit,tag:3"`
SAddress types.HostAddress `asn1:"optional,explicit,tag:4"`
RAddress types.HostAddress `asn1:"optional,explicit,tag:5"`
}
// KrbCredInfo is the KRB_CRED_INFO part of KRB_CRED.
type KrbCredInfo struct {
Key types.EncryptionKey `asn1:"explicit,tag:0"`
PRealm string `asn1:"generalstring,optional,explicit,tag:1"`
PName types.PrincipalName `asn1:"optional,explicit,tag:2"`
Flags asn1.BitString `asn1:"optional,explicit,tag:3"`
AuthTime time.Time `asn1:"generalized,optional,explicit,tag:4"`
StartTime time.Time `asn1:"generalized,optional,explicit,tag:5"`
EndTime time.Time `asn1:"generalized,optional,explicit,tag:6"`
RenewTill time.Time `asn1:"generalized,optional,explicit,tag:7"`
SRealm string `asn1:"optional,explicit,ia5,tag:8"`
SName types.PrincipalName `asn1:"optional,explicit,tag:9"`
CAddr types.HostAddresses `asn1:"optional,explicit,tag:10"`
}
// Unmarshal bytes b into the KRBCred struct.
func (k *KRBCred) Unmarshal(b []byte) error {
var m marshalKRBCred
_, err := asn1.UnmarshalWithParams(b, &m, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.KRBCred))
if err != nil {
return processUnmarshalReplyError(b, err)
}
expectedMsgType := msgtype.KRB_CRED
if m.MsgType != expectedMsgType {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate a KRB_CRED. Expected: %v; Actual: %v", expectedMsgType, m.MsgType)
}
k.PVNO = m.PVNO
k.MsgType = m.MsgType
k.EncPart = m.EncPart
if len(m.Tickets.Bytes) > 0 {
k.Tickets, err = unmarshalTicketsSequence(m.Tickets)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling tickets within KRB_CRED")
}
}
return nil
}
// DecryptEncPart decrypts the encrypted part of a KRB_CRED.
func (k *KRBCred) DecryptEncPart(key types.EncryptionKey) error {
b, err := crypto.DecryptEncPart(k.EncPart, key, keyusage.KRB_CRED_ENCPART)
if err != nil {
return krberror.Errorf(err, krberror.DecryptingError, "error decrypting KRB_CRED EncPart")
}
var denc EncKrbCredPart
err = denc.Unmarshal(b)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling encrypted part of KRB_CRED")
}
k.DecryptedEncPart = denc
return nil
}
// Unmarshal bytes b into the encrypted part of KRB_CRED.
func (k *EncKrbCredPart) Unmarshal(b []byte) error {
_, err := asn1.UnmarshalWithParams(b, k, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.EncKrbCredPart))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "error unmarshaling EncKrbCredPart")
}
return nil
}

83
vendor/github.com/jcmturner/gokrb5/v8/messages/KRBError.go generated vendored Normal file
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@ -0,0 +1,83 @@
// Package messages implements Kerberos 5 message types and methods.
package messages
import (
"fmt"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/iana"
"github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
"github.com/jcmturner/gokrb5/v8/iana/errorcode"
"github.com/jcmturner/gokrb5/v8/iana/msgtype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/types"
)
// KRBError implements RFC 4120 KRB_ERROR: https://tools.ietf.org/html/rfc4120#section-5.9.1.
type KRBError struct {
PVNO int `asn1:"explicit,tag:0"`
MsgType int `asn1:"explicit,tag:1"`
CTime time.Time `asn1:"generalized,optional,explicit,tag:2"`
Cusec int `asn1:"optional,explicit,tag:3"`
STime time.Time `asn1:"generalized,explicit,tag:4"`
Susec int `asn1:"explicit,tag:5"`
ErrorCode int32 `asn1:"explicit,tag:6"`
CRealm string `asn1:"generalstring,optional,explicit,tag:7"`
CName types.PrincipalName `asn1:"optional,explicit,tag:8"`
Realm string `asn1:"generalstring,explicit,tag:9"`
SName types.PrincipalName `asn1:"explicit,tag:10"`
EText string `asn1:"generalstring,optional,explicit,tag:11"`
EData []byte `asn1:"optional,explicit,tag:12"`
}
// NewKRBError creates a new KRBError.
func NewKRBError(sname types.PrincipalName, realm string, code int32, etext string) KRBError {
t := time.Now().UTC()
return KRBError{
PVNO: iana.PVNO,
MsgType: msgtype.KRB_ERROR,
STime: t,
Susec: int((t.UnixNano() / int64(time.Microsecond)) - (t.Unix() * 1e6)),
ErrorCode: code,
SName: sname,
Realm: realm,
EText: etext,
}
}
// Unmarshal bytes b into the KRBError struct.
func (k *KRBError) Unmarshal(b []byte) error {
_, err := asn1.UnmarshalWithParams(b, k, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.KRBError))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "KRB_ERROR unmarshal error")
}
expectedMsgType := msgtype.KRB_ERROR
if k.MsgType != expectedMsgType {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate a KRB_ERROR. Expected: %v; Actual: %v", expectedMsgType, k.MsgType)
}
return nil
}
// Error method implementing error interface on KRBError struct.
func (k KRBError) Error() string {
etxt := fmt.Sprintf("KRB Error: %s", errorcode.Lookup(k.ErrorCode))
if k.EText != "" {
etxt = fmt.Sprintf("%s - %s", etxt, k.EText)
}
return etxt
}
func processUnmarshalReplyError(b []byte, err error) error {
switch err.(type) {
case asn1.StructuralError:
var krberr KRBError
tmperr := krberr.Unmarshal(b)
if tmperr != nil {
return krberror.Errorf(err, krberror.EncodingError, "failed to unmarshal KDC's reply")
}
return krberr
default:
return krberror.Errorf(err, krberror.EncodingError, "failed to unmarshal KDC's reply")
}
}

108
vendor/github.com/jcmturner/gokrb5/v8/messages/KRBPriv.go generated vendored Normal file
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@ -0,0 +1,108 @@
package messages
import (
"fmt"
"time"
"github.com/jcmturner/gofork/encoding/asn1"
"github.com/jcmturner/gokrb5/v8/asn1tools"
"github.com/jcmturner/gokrb5/v8/crypto"
"github.com/jcmturner/gokrb5/v8/iana"
"github.com/jcmturner/gokrb5/v8/iana/asnAppTag"
"github.com/jcmturner/gokrb5/v8/iana/keyusage"
"github.com/jcmturner/gokrb5/v8/iana/msgtype"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/jcmturner/gokrb5/v8/types"
)
// KRBPriv implements RFC 4120 type: https://tools.ietf.org/html/rfc4120#section-5.7.1.
type KRBPriv struct {
PVNO int `asn1:"explicit,tag:0"`
MsgType int `asn1:"explicit,tag:1"`
EncPart types.EncryptedData `asn1:"explicit,tag:3"`
DecryptedEncPart EncKrbPrivPart `asn1:"optional,omitempty"` // Not part of ASN1 bytes so marked as optional so unmarshalling works
}
// EncKrbPrivPart is the encrypted part of KRB_PRIV.
type EncKrbPrivPart struct {
UserData []byte `asn1:"explicit,tag:0"`
Timestamp time.Time `asn1:"generalized,optional,explicit,tag:1"`
Usec int `asn1:"optional,explicit,tag:2"`
SequenceNumber int64 `asn1:"optional,explicit,tag:3"`
SAddress types.HostAddress `asn1:"explicit,tag:4"`
RAddress types.HostAddress `asn1:"optional,explicit,tag:5"`
}
// NewKRBPriv returns a new KRBPriv type.
func NewKRBPriv(part EncKrbPrivPart) KRBPriv {
return KRBPriv{
PVNO: iana.PVNO,
MsgType: msgtype.KRB_PRIV,
DecryptedEncPart: part,
}
}
// Unmarshal bytes b into the KRBPriv struct.
func (k *KRBPriv) Unmarshal(b []byte) error {
_, err := asn1.UnmarshalWithParams(b, k, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.KRBPriv))
if err != nil {
return processUnmarshalReplyError(b, err)
}
expectedMsgType := msgtype.KRB_PRIV
if k.MsgType != expectedMsgType {
return krberror.NewErrorf(krberror.KRBMsgError, "message ID does not indicate a KRB_PRIV. Expected: %v; Actual: %v", expectedMsgType, k.MsgType)
}
return nil
}
// Unmarshal bytes b into the EncKrbPrivPart struct.
func (k *EncKrbPrivPart) Unmarshal(b []byte) error {
_, err := asn1.UnmarshalWithParams(b, k, fmt.Sprintf("application,explicit,tag:%v", asnAppTag.EncKrbPrivPart))
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "KRB_PRIV unmarshal error")
}
return nil
}
// Marshal the KRBPriv.
func (k *KRBPriv) Marshal() ([]byte, error) {
tk := KRBPriv{
PVNO: k.PVNO,
MsgType: k.MsgType,
EncPart: k.EncPart,
}
b, err := asn1.Marshal(tk)
if err != nil {
return []byte{}, err
}
b = asn1tools.AddASNAppTag(b, asnAppTag.KRBPriv)
return b, nil
}
// EncryptEncPart encrypts the DecryptedEncPart within the KRBPriv.
// Use to prepare for marshaling.
func (k *KRBPriv) EncryptEncPart(key types.EncryptionKey) error {
b, err := asn1.Marshal(k.DecryptedEncPart)
if err != nil {
return err
}
b = asn1tools.AddASNAppTag(b, asnAppTag.EncKrbPrivPart)
k.EncPart, err = crypto.GetEncryptedData(b, key, keyusage.KRB_PRIV_ENCPART, 1)
if err != nil {
return err
}
return nil
}
// DecryptEncPart decrypts the encrypted part of the KRBPriv message.
func (k *KRBPriv) DecryptEncPart(key types.EncryptionKey) error {
b, err := crypto.DecryptEncPart(k.EncPart, key, keyusage.KRB_PRIV_ENCPART)
if err != nil {
return fmt.Errorf("error decrypting KRBPriv EncPart: %v", err)
}
err = k.DecryptedEncPart.Unmarshal(b)
if err != nil {
return fmt.Errorf("error unmarshaling encrypted part: %v", err)
}
return nil
}

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