vikunja-api/pkg/routes/caldav/handler.go

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// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-2021 Vikunja and contributors. All rights reserved.
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//
// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public Licensee as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
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//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public Licensee for more details.
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//
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// You should have received a copy of the GNU Affero General Public Licensee
// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package caldav
import (
"bytes"
"fmt"
"io/ioutil"
"reflect"
"strconv"
"strings"
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"code.vikunja.io/api/pkg/log"
"code.vikunja.io/api/pkg/models"
"code.vikunja.io/api/pkg/user"
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"code.vikunja.io/web/handler"
"github.com/labstack/echo/v4"
"github.com/samedi/caldav-go"
"github.com/samedi/caldav-go/lib"
)
func getBasicAuthUserFromContext(c echo.Context) (*user.User, error) {
u, is := c.Get("userBasicAuth").(*user.User)
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if !is {
return &user.User{}, fmt.Errorf("user is not user element, is %s", reflect.TypeOf(c.Get("userBasicAuth")))
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}
return u, nil
}
// ListHandler returns all tasks from a list
func ListHandler(c echo.Context) error {
listID, err := getIntParam(c, "list")
if err != nil {
return err
}
u, err := getBasicAuthUserFromContext(c)
if err != nil {
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log.Error(err)
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return echo.ErrInternalServerError
}
storage := &VikunjaCaldavListStorage{
list: &models.List{ID: listID},
user: u,
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}
// Try to parse a task from the request payload
body, _ := ioutil.ReadAll(c.Request().Body)
// Restore the io.ReadCloser to its original state
c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(body))
// Parse it
vtodo := string(body)
if vtodo != "" && strings.HasPrefix(vtodo, `BEGIN:VCALENDAR`) {
storage.task, err = parseTaskFromVTODO(vtodo)
if err != nil {
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log.Error(err)
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return echo.ErrInternalServerError
}
}
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log.Debugf("[CALDAV] Request Body: %v\n", string(body))
log.Debugf("[CALDAV] Request Headers: %v\n", c.Request().Header)
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caldav.SetupStorage(storage)
caldav.SetupUser("dav/lists")
caldav.SetupSupportedComponents([]string{lib.VCALENDAR, lib.VTODO})
response := caldav.HandleRequest(c.Request())
response.Write(c.Response())
return nil
}
// TaskHandler is the handler which manages updating/deleting a single task
func TaskHandler(c echo.Context) error {
listID, err := getIntParam(c, "list")
if err != nil {
return err
}
u, err := getBasicAuthUserFromContext(c)
if err != nil {
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log.Error(err)
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return echo.ErrInternalServerError
}
// Get the task uid
taskUID := strings.TrimSuffix(c.Param("task"), ".ics")
storage := &VikunjaCaldavListStorage{
list: &models.List{ID: listID},
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task: &models.Task{UID: taskUID},
user: u,
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}
caldav.SetupStorage(storage)
response := caldav.HandleRequest(c.Request())
response.Write(c.Response())
return nil
}
// PrincipalHandler handles all request to principal resources
func PrincipalHandler(c echo.Context) error {
u, err := getBasicAuthUserFromContext(c)
if err != nil {
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log.Error(err)
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return echo.ErrInternalServerError
}
storage := &VikunjaCaldavListStorage{
user: u,
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isPrincipal: true,
}
// Try to parse a task from the request payload
body, _ := ioutil.ReadAll(c.Request().Body)
// Restore the io.ReadCloser to its original state
c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(body))
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log.Debugf("[CALDAV] Request Body: %v\n", string(body))
log.Debugf("[CALDAV] Request Headers: %v\n", c.Request().Header)
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caldav.SetupStorage(storage)
caldav.SetupUser("dav/principals/" + u.Username)
caldav.SetupSupportedComponents([]string{lib.VCALENDAR, lib.VTODO})
response := caldav.HandleRequest(c.Request())
response.Write(c.Response())
return nil
}
// EntryHandler handles all request to principal resources
func EntryHandler(c echo.Context) error {
u, err := getBasicAuthUserFromContext(c)
if err != nil {
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log.Error(err)
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return echo.ErrInternalServerError
}
storage := &VikunjaCaldavListStorage{
user: u,
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isEntry: true,
}
// Try to parse a task from the request payload
body, _ := ioutil.ReadAll(c.Request().Body)
// Restore the io.ReadCloser to its original state
c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(body))
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log.Debugf("[CALDAV] Request Body: %v\n", string(body))
log.Debugf("[CALDAV] Request Headers: %v\n", c.Request().Header)
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caldav.SetupStorage(storage)
caldav.SetupUser("dav/principals/" + u.Username)
caldav.SetupSupportedComponents([]string{lib.VCALENDAR, lib.VTODO})
response := caldav.HandleRequest(c.Request())
response.Write(c.Response())
return nil
}
func getIntParam(c echo.Context, paramName string) (intParam int64, err error) {
param := c.Param(paramName)
if param == "" {
return 0, nil
}
intParam, err = strconv.ParseInt(param, 10, 64)
if err != nil {
return 0, handler.HandleHTTPError(err, c)
}
return
}