forgejo-federation/modules/setting/mailer.go
zeripath 1514e13bb8
Add option to convert CRLF to LF line endings for sendmail (#18075)
It appears that several versions of sendmail require that the mail is sent to them with
LF line endings instead of CRLF endings - which of course they will then convert back
to CRLF line endings to comply with the SMTP standard.

This PR adds another setting SENDMAIL_CONVERT_CRLF which will pass the message writer
through a filter. This will filter out and convert CRLFs to LFs before writing them
out to sendmail.

Fix #18024

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-01-06 01:43:45 +01:00

150 lines
4.3 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package setting
import (
"net/mail"
"time"
"code.gitea.io/gitea/modules/log"
shellquote "github.com/kballard/go-shellquote"
)
// Mailer represents mail service.
type Mailer struct {
// Mailer
Name string
From string
EnvelopeFrom string
OverrideEnvelopeFrom bool `ini:"-"`
FromName string
FromEmail string
SendAsPlainText bool
MailerType string
SubjectPrefix string
// SMTP sender
Host string
User, Passwd string
DisableHelo bool
HeloHostname string
SkipVerify bool
UseCertificate bool
CertFile, KeyFile string
IsTLSEnabled bool
// Sendmail sender
SendmailPath string
SendmailArgs []string
SendmailTimeout time.Duration
SendmailConvertCRLF bool
}
var (
// MailService the global mailer
MailService *Mailer
)
func newMailService() {
sec := Cfg.Section("mailer")
// Check mailer setting.
if !sec.Key("ENABLED").MustBool() {
return
}
MailService = &Mailer{
Name: sec.Key("NAME").MustString(AppName),
SendAsPlainText: sec.Key("SEND_AS_PLAIN_TEXT").MustBool(false),
MailerType: sec.Key("MAILER_TYPE").In("", []string{"smtp", "sendmail", "dummy"}),
Host: sec.Key("HOST").String(),
User: sec.Key("USER").String(),
Passwd: sec.Key("PASSWD").String(),
DisableHelo: sec.Key("DISABLE_HELO").MustBool(),
HeloHostname: sec.Key("HELO_HOSTNAME").String(),
SkipVerify: sec.Key("SKIP_VERIFY").MustBool(),
UseCertificate: sec.Key("USE_CERTIFICATE").MustBool(),
CertFile: sec.Key("CERT_FILE").String(),
KeyFile: sec.Key("KEY_FILE").String(),
IsTLSEnabled: sec.Key("IS_TLS_ENABLED").MustBool(),
SubjectPrefix: sec.Key("SUBJECT_PREFIX").MustString(""),
SendmailPath: sec.Key("SENDMAIL_PATH").MustString("sendmail"),
SendmailTimeout: sec.Key("SENDMAIL_TIMEOUT").MustDuration(5 * time.Minute),
SendmailConvertCRLF: sec.Key("SENDMAIL_CONVERT_CRLF").MustBool(true),
}
MailService.From = sec.Key("FROM").MustString(MailService.User)
MailService.EnvelopeFrom = sec.Key("ENVELOPE_FROM").MustString("")
if sec.HasKey("ENABLE_HTML_ALTERNATIVE") {
log.Warn("ENABLE_HTML_ALTERNATIVE is deprecated, use SEND_AS_PLAIN_TEXT")
MailService.SendAsPlainText = !sec.Key("ENABLE_HTML_ALTERNATIVE").MustBool(false)
}
if sec.HasKey("USE_SENDMAIL") {
log.Warn("USE_SENDMAIL is deprecated, use MAILER_TYPE=sendmail")
if MailService.MailerType == "" && sec.Key("USE_SENDMAIL").MustBool(false) {
MailService.MailerType = "sendmail"
}
}
parsed, err := mail.ParseAddress(MailService.From)
if err != nil {
log.Fatal("Invalid mailer.FROM (%s): %v", MailService.From, err)
}
MailService.FromName = parsed.Name
MailService.FromEmail = parsed.Address
switch MailService.EnvelopeFrom {
case "":
MailService.OverrideEnvelopeFrom = false
case "<>":
MailService.EnvelopeFrom = ""
MailService.OverrideEnvelopeFrom = true
default:
parsed, err = mail.ParseAddress(MailService.EnvelopeFrom)
if err != nil {
log.Fatal("Invalid mailer.ENVELOPE_FROM (%s): %v", MailService.EnvelopeFrom, err)
}
MailService.OverrideEnvelopeFrom = true
MailService.EnvelopeFrom = parsed.Address
}
if MailService.MailerType == "" {
MailService.MailerType = "smtp"
}
if MailService.MailerType == "sendmail" {
MailService.SendmailArgs, err = shellquote.Split(sec.Key("SENDMAIL_ARGS").String())
if err != nil {
log.Error("Failed to parse Sendmail args: %s with error %v", CustomConf, err)
}
}
log.Info("Mail Service Enabled")
}
func newRegisterMailService() {
if !Cfg.Section("service").Key("REGISTER_EMAIL_CONFIRM").MustBool() {
return
} else if MailService == nil {
log.Warn("Register Mail Service: Mail Service is not enabled")
return
}
Service.RegisterEmailConfirm = true
log.Info("Register Mail Service Enabled")
}
func newNotifyMailService() {
if !Cfg.Section("service").Key("ENABLE_NOTIFY_MAIL").MustBool() {
return
} else if MailService == nil {
log.Warn("Notify Mail Service: Mail Service is not enabled")
return
}
Service.EnableNotifyMail = true
log.Info("Notify Mail Service Enabled")
}