forked from vikunja/vikunja
139 lines
3.6 KiB
Go
139 lines
3.6 KiB
Go
// 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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//
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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
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// 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
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package mail
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import (
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"context"
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"crypto/tls"
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"time"
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"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/log"
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"github.com/wneessen/go-mail"
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)
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// Queue is the mail queue
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var Queue chan *mail.Msg
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func getClient() (*mail.Client, error) {
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var authType mail.SMTPAuthType
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switch config.MailerAuthType.GetString() {
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case "plain":
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authType = mail.SMTPAuthPlain
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case "login":
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authType = mail.SMTPAuthLogin
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case "cram-md5":
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authType = mail.SMTPAuthCramMD5
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}
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tlsPolicy := mail.TLSOpportunistic
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if config.MailerForceSSL.GetBool() {
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tlsPolicy = mail.TLSMandatory
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}
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opts := []mail.Option{
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mail.WithPort(config.MailerPort.GetInt()),
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mail.WithTLSPolicy(tlsPolicy),
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//#nosec G402
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mail.WithTLSConfig(&tls.Config{
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InsecureSkipVerify: config.MailerSkipTLSVerify.GetBool(),
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ServerName: config.MailerHost.GetString(),
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}),
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mail.WithTimeout((config.MailerQueueTimeout.GetDuration() + 3) * time.Second), // 3s more for us to close before mail server timeout
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}
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if config.MailerForceSSL.GetBool() {
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opts = append(opts, mail.WithSSL())
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}
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if config.MailerUsername.GetString() != "" && config.MailerPassword.GetString() != "" {
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opts = append(opts, mail.WithSMTPAuth(authType))
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}
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if config.MailerUsername.GetString() != "" {
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opts = append(opts, mail.WithUsername(config.MailerUsername.GetString()))
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}
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if config.MailerPassword.GetString() != "" {
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opts = append(opts, mail.WithPassword(config.MailerPassword.GetString()))
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}
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return mail.NewClient(
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config.MailerHost.GetString(),
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opts...,
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)
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}
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// StartMailDaemon starts the mail daemon
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func StartMailDaemon() {
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Queue = make(chan *mail.Msg, config.MailerQueuelength.GetInt())
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if !config.MailerEnabled.GetBool() {
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return
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}
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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
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}
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c, err := getClient()
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if err != nil {
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log.Errorf("Could not create mail client: %v", err)
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return
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}
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go func() {
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var err error
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open := false
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for {
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select {
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case m, ok := <-Queue:
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if !ok {
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return
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}
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if !open {
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err = c.DialWithContext(context.Background())
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if err != nil {
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log.Errorf("Error during connect to smtp server: %s", err)
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break
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}
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open = true
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}
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err = c.Send(m)
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if err != nil {
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log.Errorf("Error when sending mail: %s", err)
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break
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}
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// Close the connection to the SMTP server if no email was sent in
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// the last 30 seconds.
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case <-time.After(config.MailerQueueTimeout.GetDuration() * time.Second):
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if open {
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open = false
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err = c.Close()
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if err != nil {
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log.Errorf("Error closing the mail server connection: %s\n", err)
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break
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}
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log.Info("Closed connection to mail server")
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}
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}
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}
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}()
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}
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