1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
|
// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2017 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 mailer
import (
"bytes"
"crypto/tls"
"fmt"
"io"
"net"
"net/smtp"
"os"
"os/exec"
"strings"
"time"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"github.com/jaytaylor/html2text"
"gopkg.in/gomail.v2"
)
// Message mail body and log info
type Message struct {
Info string // Message information for log purpose.
*gomail.Message
}
// NewMessageFrom creates new mail message object with custom From header.
func NewMessageFrom(to []string, fromDisplayName, fromAddress, subject, body string) *Message {
log.Trace("NewMessageFrom (body):\n%s", body)
msg := gomail.NewMessage()
msg.SetAddressHeader("From", fromAddress, fromDisplayName)
msg.SetHeader("To", to...)
msg.SetHeader("Subject", subject)
msg.SetDateHeader("Date", time.Now())
plainBody, err := html2text.FromString(body)
if err != nil || setting.MailService.SendAsPlainText {
if strings.Contains(base.TruncateString(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", body)
}
return &Message{
Message: msg,
}
}
// NewMessage creates new mail message object with default From header.
func NewMessage(to []string, 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
}
// 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
host, port, err := net.SplitHostPort(opts.Host)
if err != nil {
return err
}
tlsconfig := &tls.Config{
InsecureSkipVerify: opts.SkipVerify,
ServerName: host,
}
if opts.UseCertificate {
cert, err := tls.LoadX509KeyPair(opts.CertFile, opts.KeyFile)
if err != nil {
return err
}
tlsconfig.Certificates = []tls.Certificate{cert}
}
conn, err := net.Dial("tcp", net.JoinHostPort(host, port))
if err != nil {
return err
}
defer conn.Close()
isSecureConn := opts.IsTLSEnabled || (strings.HasSuffix(port, "465"))
// Start TLS directly if the port ends with 465 (SMTPS protocol)
if isSecureConn {
conn = tls.Client(conn, tlsconfig)
}
client, err := smtp.NewClient(conn, host)
if err != nil {
return fmt.Errorf("NewClient: %v", err)
}
if !opts.DisableHelo {
hostname := opts.HeloHostname
if len(hostname) == 0 {
hostname, err = os.Hostname()
if err != nil {
return err
}
}
if err = client.Hello(hostname); err != nil {
return fmt.Errorf("Hello: %v", err)
}
}
// If not using SMTPS, always use STARTTLS if available
hasStartTLS, _ := client.Extension("STARTTLS")
if !isSecureConn && hasStartTLS {
if err = client.StartTLS(tlsconfig); err != nil {
return fmt.Errorf("StartTLS: %v", err)
}
}
canAuth, options := client.Extension("AUTH")
if canAuth && len(opts.User) > 0 {
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)
}
if auth != nil {
if err = client.Auth(auth); err != nil {
return fmt.Errorf("Auth: %v", err)
}
}
}
if err = client.Mail(from); err != nil {
return fmt.Errorf("Mail: %v", err)
}
for _, rec := range to {
if err = client.Rcpt(rec); err != nil {
return fmt.Errorf("Rcpt: %v", err)
}
}
w, err := client.Data()
if err != nil {
return fmt.Errorf("Data: %v", err)
} else if _, err = msg.WriteTo(w); err != nil {
return fmt.Errorf("WriteTo: %v", err)
} else if err = w.Close(); err != nil {
return fmt.Errorf("Close: %v", 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
args := []string{"-F", from, "-i"}
args = append(args, setting.MailService.SendmailArgs...)
args = append(args, to...)
log.Trace("Sending with: %s %v", setting.MailService.SendmailPath, args)
cmd := exec.Command(setting.MailService.SendmailPath, args...)
pipe, err := cmd.StdinPipe()
if err != nil {
return err
}
if err = cmd.Start(); err != nil {
return err
}
_, 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
}
func processMailQueue() {
for {
select {
case msg := <-mailQueue:
log.Trace("New e-mail sending request %s: %s", msg.GetHeader("To"), msg.Info)
if err := gomail.Send(Sender, msg.Message); err != nil {
log.Error("Failed to send emails %s: %s - %v", msg.GetHeader("To"), msg.Info, err)
} else {
log.Trace("E-mails sent %s: %s", msg.GetHeader("To"), msg.Info)
}
}
}
}
var mailQueue chan *Message
// Sender sender for sending mail synchronously
var Sender gomail.Sender
// NewContext start mail queue service
func NewContext() {
// Need to check if mailQueue is nil because in during reinstall (user had installed
// before but swithed 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.MailerType {
case "smtp":
Sender = &smtpSender{}
case "sendmail":
Sender = &sendmailSender{}
case "dummy":
Sender = &dummySender{}
}
mailQueue = make(chan *Message, setting.MailService.QueueLength)
go processMailQueue()
}
// SendAsync send mail asynchronous
func SendAsync(msg *Message) {
go func() {
mailQueue <- msg
}()
}
|
