442 lines
12 KiB
Go
442 lines
12 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
|
|
// Copyright 2017 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package mailer
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"crypto/tls"
|
|
"fmt"
|
|
"hash/fnv"
|
|
"io"
|
|
"net"
|
|
"net/smtp"
|
|
"os"
|
|
"os/exec"
|
|
"strings"
|
|
"time"
|
|
|
|
"code.gitea.io/gitea/modules/base"
|
|
"code.gitea.io/gitea/modules/graceful"
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/process"
|
|
"code.gitea.io/gitea/modules/queue"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"code.gitea.io/gitea/modules/templates"
|
|
|
|
ntlmssp "github.com/Azure/go-ntlmssp"
|
|
"github.com/jaytaylor/html2text"
|
|
"gopkg.in/gomail.v2"
|
|
)
|
|
|
|
// Message mail body and log info
|
|
type Message struct {
|
|
Info string // Message information for log purpose.
|
|
FromAddress string
|
|
FromDisplayName string
|
|
To string // Use only one recipient to prevent leaking of addresses
|
|
ReplyTo string
|
|
Subject string
|
|
Date time.Time
|
|
Body string
|
|
Headers map[string][]string
|
|
}
|
|
|
|
// ToMessage converts a Message to gomail.Message
|
|
func (m *Message) ToMessage() *gomail.Message {
|
|
msg := gomail.NewMessage()
|
|
msg.SetAddressHeader("From", m.FromAddress, m.FromDisplayName)
|
|
msg.SetHeader("To", m.To)
|
|
if m.ReplyTo != "" {
|
|
msg.SetHeader("Reply-To", m.ReplyTo)
|
|
}
|
|
for header := range m.Headers {
|
|
msg.SetHeader(header, m.Headers[header]...)
|
|
}
|
|
|
|
if len(setting.MailService.SubjectPrefix) > 0 {
|
|
msg.SetHeader("Subject", setting.MailService.SubjectPrefix+" "+m.Subject)
|
|
} else {
|
|
msg.SetHeader("Subject", m.Subject)
|
|
}
|
|
msg.SetDateHeader("Date", m.Date)
|
|
msg.SetHeader("X-Auto-Response-Suppress", "All")
|
|
|
|
plainBody, err := html2text.FromString(m.Body)
|
|
if err != nil || setting.MailService.SendAsPlainText {
|
|
if strings.Contains(base.TruncateString(m.Body, 100), "<html>") {
|
|
log.Warn("Mail contains HTML but configured to send as plain text.")
|
|
}
|
|
msg.SetBody("text/plain", plainBody)
|
|
} else {
|
|
msg.SetBody("text/plain", plainBody)
|
|
msg.AddAlternative("text/html", m.Body)
|
|
}
|
|
|
|
if len(msg.GetHeader("Message-ID")) == 0 {
|
|
msg.SetHeader("Message-ID", m.generateAutoMessageID())
|
|
}
|
|
return msg
|
|
}
|
|
|
|
// SetHeader adds additional headers to a message
|
|
func (m *Message) SetHeader(field string, value ...string) {
|
|
m.Headers[field] = value
|
|
}
|
|
|
|
func (m *Message) generateAutoMessageID() string {
|
|
dateMs := m.Date.UnixNano() / 1e6
|
|
h := fnv.New64()
|
|
if len(m.To) > 0 {
|
|
_, _ = h.Write([]byte(m.To))
|
|
}
|
|
_, _ = h.Write([]byte(m.Subject))
|
|
_, _ = h.Write([]byte(m.Body))
|
|
return fmt.Sprintf("<autogen-%d-%016x@%s>", dateMs, h.Sum64(), setting.Domain)
|
|
}
|
|
|
|
// NewMessageFrom creates new mail message object with custom From header.
|
|
func NewMessageFrom(to, fromDisplayName, fromAddress, subject, body string) *Message {
|
|
log.Trace("NewMessageFrom (body):\n%s", body)
|
|
|
|
return &Message{
|
|
FromAddress: fromAddress,
|
|
FromDisplayName: fromDisplayName,
|
|
To: to,
|
|
Subject: subject,
|
|
Date: time.Now(),
|
|
Body: body,
|
|
Headers: map[string][]string{},
|
|
}
|
|
}
|
|
|
|
// NewMessage creates new mail message object with default From header.
|
|
func NewMessage(to, subject, body string) *Message {
|
|
return NewMessageFrom(to, setting.MailService.FromName, setting.MailService.FromEmail, subject, body)
|
|
}
|
|
|
|
type loginAuth struct {
|
|
username, password string
|
|
}
|
|
|
|
// LoginAuth SMTP AUTH LOGIN Auth Handler
|
|
func LoginAuth(username, password string) smtp.Auth {
|
|
return &loginAuth{username, password}
|
|
}
|
|
|
|
// Start start SMTP login auth
|
|
func (a *loginAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
|
|
return "LOGIN", []byte{}, nil
|
|
}
|
|
|
|
// Next next step of SMTP login auth
|
|
func (a *loginAuth) Next(fromServer []byte, more bool) ([]byte, error) {
|
|
if more {
|
|
switch string(fromServer) {
|
|
case "Username:":
|
|
return []byte(a.username), nil
|
|
case "Password:":
|
|
return []byte(a.password), nil
|
|
default:
|
|
return nil, fmt.Errorf("unknown fromServer: %s", string(fromServer))
|
|
}
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
type ntlmAuth struct {
|
|
username, password, domain string
|
|
domainNeeded bool
|
|
}
|
|
|
|
// NtlmAuth SMTP AUTH NTLM Auth Handler
|
|
func NtlmAuth(username, password string) smtp.Auth {
|
|
user, domain, domainNeeded := ntlmssp.GetDomain(username)
|
|
return &ntlmAuth{user, password, domain, domainNeeded}
|
|
}
|
|
|
|
// Start starts SMTP NTLM Auth
|
|
func (a *ntlmAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
|
|
negotiateMessage, err := ntlmssp.NewNegotiateMessage(a.domain, "")
|
|
return "NTLM", negotiateMessage, err
|
|
}
|
|
|
|
// Next next step of SMTP ntlm auth
|
|
func (a *ntlmAuth) Next(fromServer []byte, more bool) ([]byte, error) {
|
|
if more {
|
|
if len(fromServer) == 0 {
|
|
return nil, fmt.Errorf("ntlm ChallengeMessage is empty")
|
|
}
|
|
authenticateMessage, err := ntlmssp.ProcessChallenge(fromServer, a.username, a.password, a.domainNeeded)
|
|
return authenticateMessage, err
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
// Sender SMTP mail sender
|
|
type smtpSender struct{}
|
|
|
|
// Send send email
|
|
func (s *smtpSender) Send(from string, to []string, msg io.WriterTo) error {
|
|
opts := setting.MailService
|
|
|
|
var network string
|
|
var address string
|
|
if opts.Protocol == "smtp+unix" {
|
|
network = "unix"
|
|
address = opts.SMTPAddr
|
|
} else {
|
|
network = "tcp"
|
|
address = net.JoinHostPort(opts.SMTPAddr, opts.SMTPPort)
|
|
}
|
|
|
|
conn, err := net.Dial(network, address)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to establish network connection to SMTP server: %w", err)
|
|
}
|
|
defer conn.Close()
|
|
|
|
var tlsconfig *tls.Config
|
|
if opts.Protocol == "smtps" || opts.Protocol == "smtp+starttls" {
|
|
tlsconfig = &tls.Config{
|
|
InsecureSkipVerify: opts.ForceTrustServerCert,
|
|
ServerName: opts.SMTPAddr,
|
|
}
|
|
|
|
if opts.UseClientCert {
|
|
cert, err := tls.LoadX509KeyPair(opts.ClientCertFile, opts.ClientKeyFile)
|
|
if err != nil {
|
|
return fmt.Errorf("could not load SMTP client certificate: %w", err)
|
|
}
|
|
tlsconfig.Certificates = []tls.Certificate{cert}
|
|
}
|
|
}
|
|
|
|
if opts.Protocol == "smtps" {
|
|
conn = tls.Client(conn, tlsconfig)
|
|
}
|
|
|
|
host := "localhost"
|
|
if opts.Protocol == "smtp+unix" {
|
|
host = opts.SMTPAddr
|
|
}
|
|
client, err := smtp.NewClient(conn, host)
|
|
if err != nil {
|
|
return fmt.Errorf("could not initiate SMTP session: %w", err)
|
|
}
|
|
|
|
if opts.EnableHelo {
|
|
hostname := opts.HeloHostname
|
|
if len(hostname) == 0 {
|
|
hostname, err = os.Hostname()
|
|
if err != nil {
|
|
return fmt.Errorf("could not retrieve system hostname: %w", err)
|
|
}
|
|
}
|
|
|
|
if err = client.Hello(hostname); err != nil {
|
|
return fmt.Errorf("failed to issue HELO command: %w", err)
|
|
}
|
|
}
|
|
|
|
if opts.Protocol == "smtp+starttls" {
|
|
hasStartTLS, _ := client.Extension("STARTTLS")
|
|
if hasStartTLS {
|
|
if err = client.StartTLS(tlsconfig); err != nil {
|
|
return fmt.Errorf("failed to start TLS connection: %w", err)
|
|
}
|
|
} else {
|
|
log.Warn("StartTLS requested, but SMTP server does not support it; falling back to regular SMTP")
|
|
}
|
|
}
|
|
|
|
canAuth, options := client.Extension("AUTH")
|
|
if len(opts.User) > 0 {
|
|
if !canAuth {
|
|
return fmt.Errorf("SMTP server does not support AUTH, but credentials provided")
|
|
}
|
|
|
|
var auth smtp.Auth
|
|
|
|
if strings.Contains(options, "CRAM-MD5") {
|
|
auth = smtp.CRAMMD5Auth(opts.User, opts.Passwd)
|
|
} else if strings.Contains(options, "PLAIN") {
|
|
auth = smtp.PlainAuth("", opts.User, opts.Passwd, host)
|
|
} else if strings.Contains(options, "LOGIN") {
|
|
// Patch for AUTH LOGIN
|
|
auth = LoginAuth(opts.User, opts.Passwd)
|
|
} else if strings.Contains(options, "NTLM") {
|
|
auth = NtlmAuth(opts.User, opts.Passwd)
|
|
}
|
|
|
|
if auth != nil {
|
|
if err = client.Auth(auth); err != nil {
|
|
return fmt.Errorf("failed to authenticate SMTP: %w", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
if opts.OverrideEnvelopeFrom {
|
|
if err = client.Mail(opts.EnvelopeFrom); err != nil {
|
|
return fmt.Errorf("failed to issue MAIL command: %w", err)
|
|
}
|
|
} else {
|
|
if err = client.Mail(from); err != nil {
|
|
return fmt.Errorf("failed to issue MAIL command: %w", err)
|
|
}
|
|
}
|
|
|
|
for _, rec := range to {
|
|
if err = client.Rcpt(rec); err != nil {
|
|
return fmt.Errorf("failed to issue RCPT command: %w", err)
|
|
}
|
|
}
|
|
|
|
w, err := client.Data()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to issue DATA command: %w", err)
|
|
} else if _, err = msg.WriteTo(w); err != nil {
|
|
return fmt.Errorf("SMTP write failed: %w", err)
|
|
} else if err = w.Close(); err != nil {
|
|
return fmt.Errorf("SMTP close failed: %w", err)
|
|
}
|
|
|
|
return client.Quit()
|
|
}
|
|
|
|
// Sender sendmail mail sender
|
|
type sendmailSender struct{}
|
|
|
|
// Send send email
|
|
func (s *sendmailSender) Send(from string, to []string, msg io.WriterTo) error {
|
|
var err error
|
|
var closeError error
|
|
var waitError error
|
|
|
|
envelopeFrom := from
|
|
if setting.MailService.OverrideEnvelopeFrom {
|
|
envelopeFrom = setting.MailService.EnvelopeFrom
|
|
}
|
|
|
|
args := []string{"-f", envelopeFrom, "-i"}
|
|
args = append(args, setting.MailService.SendmailArgs...)
|
|
args = append(args, to...)
|
|
log.Trace("Sending with: %s %v", setting.MailService.SendmailPath, args)
|
|
|
|
desc := fmt.Sprintf("SendMail: %s %v", setting.MailService.SendmailPath, args)
|
|
|
|
ctx, _, finished := process.GetManager().AddContextTimeout(graceful.GetManager().HammerContext(), setting.MailService.SendmailTimeout, desc)
|
|
defer finished()
|
|
|
|
cmd := exec.CommandContext(ctx, setting.MailService.SendmailPath, args...)
|
|
pipe, err := cmd.StdinPipe()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
process.SetSysProcAttribute(cmd)
|
|
|
|
if err = cmd.Start(); err != nil {
|
|
_ = pipe.Close()
|
|
return err
|
|
}
|
|
|
|
if setting.MailService.SendmailConvertCRLF {
|
|
buf := &strings.Builder{}
|
|
_, err = msg.WriteTo(buf)
|
|
if err == nil {
|
|
_, err = strings.NewReplacer("\r\n", "\n").WriteString(pipe, buf.String())
|
|
}
|
|
} else {
|
|
_, err = msg.WriteTo(pipe)
|
|
}
|
|
|
|
// we MUST close the pipe or sendmail will hang waiting for more of the message
|
|
// Also we should wait on our sendmail command even if something fails
|
|
closeError = pipe.Close()
|
|
waitError = cmd.Wait()
|
|
if err != nil {
|
|
return err
|
|
} else if closeError != nil {
|
|
return closeError
|
|
} else {
|
|
return waitError
|
|
}
|
|
}
|
|
|
|
// Sender sendmail mail sender
|
|
type dummySender struct{}
|
|
|
|
// Send send email
|
|
func (s *dummySender) Send(from string, to []string, msg io.WriterTo) error {
|
|
buf := bytes.Buffer{}
|
|
if _, err := msg.WriteTo(&buf); err != nil {
|
|
return err
|
|
}
|
|
log.Info("Mail From: %s To: %v Body: %s", from, to, buf.String())
|
|
return nil
|
|
}
|
|
|
|
var mailQueue *queue.WorkerPoolQueue[*Message]
|
|
|
|
// Sender sender for sending mail synchronously
|
|
var Sender gomail.Sender
|
|
|
|
// NewContext start mail queue service
|
|
func NewContext(ctx context.Context) {
|
|
// Need to check if mailQueue is nil because in during reinstall (user had installed
|
|
// before but switched install lock off), this function will be called again
|
|
// while mail queue is already processing tasks, and produces a race condition.
|
|
if setting.MailService == nil || mailQueue != nil {
|
|
return
|
|
}
|
|
|
|
switch setting.MailService.Protocol {
|
|
case "sendmail":
|
|
Sender = &sendmailSender{}
|
|
case "dummy":
|
|
Sender = &dummySender{}
|
|
default:
|
|
Sender = &smtpSender{}
|
|
}
|
|
|
|
subjectTemplates, bodyTemplates = templates.Mailer(ctx)
|
|
|
|
mailQueue = queue.CreateSimpleQueue(graceful.GetManager().ShutdownContext(), "mail", func(items ...*Message) []*Message {
|
|
for _, msg := range items {
|
|
gomailMsg := msg.ToMessage()
|
|
log.Trace("New e-mail sending request %s: %s", gomailMsg.GetHeader("To"), msg.Info)
|
|
if err := gomail.Send(Sender, gomailMsg); err != nil {
|
|
log.Error("Failed to send emails %s: %s - %v", gomailMsg.GetHeader("To"), msg.Info, err)
|
|
} else {
|
|
log.Trace("E-mails sent %s: %s", gomailMsg.GetHeader("To"), msg.Info)
|
|
}
|
|
}
|
|
return nil
|
|
})
|
|
if mailQueue == nil {
|
|
log.Fatal("Unable to create mail queue")
|
|
}
|
|
go graceful.GetManager().RunWithCancel(mailQueue)
|
|
}
|
|
|
|
// SendAsync send mail asynchronously
|
|
func SendAsync(msg *Message) {
|
|
SendAsyncs([]*Message{msg})
|
|
}
|
|
|
|
// SendAsyncs send mails asynchronously
|
|
func SendAsyncs(msgs []*Message) {
|
|
if setting.MailService == nil {
|
|
log.Error("Mailer: SendAsyncs is being invoked but mail service hasn't been initialized")
|
|
return
|
|
}
|
|
|
|
go func() {
|
|
for _, msg := range msgs {
|
|
_ = mailQueue.Push(msg)
|
|
}
|
|
}()
|
|
}
|