vikunja-api/pkg/mail/mail.go

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// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-2020 Vikunja and contributors. All rights reserved.
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//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License 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
// GNU General Public License for more details.
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//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package mail
import (
"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/log"
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"crypto/tls"
"gopkg.in/gomail.v2"
"time"
)
// Queue is the mail queue
var Queue chan *gomail.Message
func getDialer() *gomail.Dialer {
d := gomail.NewDialer(config.MailerHost.GetString(), config.MailerPort.GetInt(), config.MailerUsername.GetString(), config.MailerPassword.GetString())
// #nosec
d.TLSConfig = &tls.Config{
InsecureSkipVerify: config.MailerSkipTLSVerify.GetBool(),
ServerName: config.MailerHost.GetString(),
}
return d
}
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// StartMailDaemon starts the mail daemon
func StartMailDaemon() {
Queue = make(chan *gomail.Message, config.MailerQueuelength.GetInt())
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if !config.MailerEnabled.GetBool() {
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return
}
if config.MailerHost.GetString() == "" {
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log.Warning("Mailer seems to be not configured! Please see the config docs for more details.")
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return
}
go func() {
d := getDialer()
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var s gomail.SendCloser
var err error
open := false
for {
select {
case m, ok := <-Queue:
if !ok {
return
}
if !open {
if s, err = d.Dial(); err != nil {
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log.Error("Error during connect to smtp server: %s", err)
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}
open = true
}
if err := gomail.Send(s, m); err != nil {
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log.Error("Error when sending mail: %s", err)
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}
// 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):
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if open {
if err := s.Close(); err != nil {
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log.Error("Error closing the mail server connection: %s\n", err)
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}
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log.Infof("Closed connection to mailserver")
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open = false
}
}
}
}()
}
// StopMailDaemon closes the mail queue channel, aka stops the daemon
func StopMailDaemon() {
close(Queue)
}