vikunja-api/pkg/mail/mail.go
2022-09-01 14:19:00 +02:00

133 lines
3.3 KiB
Go

// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-2021 Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// 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.
//
// 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
// GNU Affero General Public Licensee for more details.
//
// 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/>.
package mail
import (
"context"
"crypto/tls"
"time"
"code.vikunja.io/api/pkg/config"
"code.vikunja.io/api/pkg/log"
"github.com/wneessen/go-mail"
)
// Queue is the mail queue
var Queue chan *mail.Msg
func getClient() (*mail.Client, error) {
var authType mail.SMTPAuthType
switch config.MailerAuthType.GetString() {
case "plain":
authType = mail.SMTPAuthPlain
case "login":
authType = mail.SMTPAuthLogin
case "cram-md5":
authType = mail.SMTPAuthCramMD5
}
tlsPolicy := mail.TLSOpportunistic
if config.MailerForceSSL.GetBool() {
tlsPolicy = mail.TLSMandatory
}
opts := []mail.Option{
mail.WithPort(config.MailerPort.GetInt()),
mail.WithTLSPolicy(tlsPolicy),
//#nosec G402
mail.WithTLSConfig(&tls.Config{
InsecureSkipVerify: config.MailerSkipTLSVerify.GetBool(),
ServerName: config.MailerHost.GetString(),
}),
}
if config.MailerUsername.GetString() != "" && config.MailerPassword.GetString() != "" {
opts = append(opts, mail.WithSMTPAuth(authType))
}
if config.MailerUsername.GetString() != "" {
opts = append(opts, mail.WithUsername(config.MailerUsername.GetString()))
}
if config.MailerPassword.GetString() != "" {
opts = append(opts, mail.WithPassword(config.MailerPassword.GetString()))
}
return mail.NewClient(
config.MailerHost.GetString(),
opts...,
)
}
// StartMailDaemon starts the mail daemon
func StartMailDaemon() {
Queue = make(chan *mail.Msg, config.MailerQueuelength.GetInt())
if !config.MailerEnabled.GetBool() {
return
}
if config.MailerHost.GetString() == "" {
log.Warning("Mailer seems to be not configured! Please see the config docs for more details.")
return
}
c, err := getClient()
if err != nil {
log.Errorf("Could not create mail client: %v", err)
return
}
go func() {
var err error
open := false
for {
select {
case m, ok := <-Queue:
if !ok {
return
}
if !open {
err = c.DialWithContext(context.Background())
if err != nil {
log.Errorf("Error during connect to smtp server: %s", err)
break
}
open = true
}
err = c.Send(m)
if err != nil {
log.Errorf("Error when sending mail: %s", err)
break
}
// Close the connection to the SMTP server if no email was sent in
// the last 30 seconds.
case <-time.After(config.MailerQueueTimeout.GetDuration() * time.Second):
if open {
open = false
err = c.Close()
if err != nil {
log.Errorf("Error closing the mail server connection: %s\n", err)
break
}
log.Info("Closed connection to mail server")
}
}
}
}()
}