// newIMAPClient will initiate a new IMAP connection with the given creds.
func newIMAPClient(info MailboxInfo) (*imap.Client, error) {
var client *imap.Client
var err error
if info.TLS {
client, err = imap.DialTLS(info.Host, new(tls.Config))
if err != nil {
return client, err
}
} else {
client, err = imap.Dial(info.Host)
if err != nil {
return client, err
}
}
_, err = client.Login(info.User, info.Pwd)
if err != nil {
return client, err
}
_, err = imap.Wait(client.Select(info.Folder, info.ReadOnly))
if err != nil {
return client, err
}
return client, nil
}
func dialImap(addr string) (c *imap.Client, err error) {
if strings.HasSuffix(addr, ":993") {
c, err = imap.DialTLS(addr, tlsConfig)
} else {
c, err = imap.Dial(addr)
}
if err != nil {
return nil, e.New(err)
}
return c, nil
}
func Dial(addr string) (c *imap.Client) {
var err error
if strings.HasSuffix(addr, ":993") {
c, err = imap.DialTLS(addr, nil)
} else {
c, err = imap.Dial(addr)
}
if err != nil {
panic(err)
}
return c
}
func Dial(addr string) (c *imap.Client) {
var err error
if strings.HasSuffix(addr, ":993") {
log.Println("Dialing with tls: ", addr)
c, err = imap.DialTLS(addr, nil)
} else {
log.Println("Dialing without tls: ", addr)
c, err = imap.Dial(addr)
}
if err != nil {
panic(err)
}
return c
}
// CheckImapConnection if is connected return nil or try to connect
func (m *MatterMail) CheckImapConnection() error {
if m.imapClient != nil && (m.imapClient.State() == imap.Auth || m.imapClient.State() == imap.Selected) {
m.debg.Println("CheckImapConnection: Connection alive")
return nil
}
var err error
//Start connection with server
if strings.HasSuffix(m.cfg.ImapServer, ":993") {
m.debg.Println("CheckImapConnection: DialTLS")
m.imapClient, err = imap.DialTLS(m.cfg.ImapServer, nil)
} else {
m.debg.Println("CheckImapConnection: Dial")
m.imapClient, err = imap.Dial(m.cfg.ImapServer)
}
if err != nil {
m.eror.Println("Unable to connect:", err)
return err
}
if m.cfg.StartTLS && m.imapClient.Caps["STARTTLS"] {
m.debg.Println("CheckImapConnection:StartTLS")
var tconfig tls.Config
if m.cfg.TLSAcceptAllCerts {
tconfig.InsecureSkipVerify = true
}
_, err = m.imapClient.StartTLS(&tconfig)
if err != nil {
return err
}
}
//Check if server support IDLE mode
/*
if !m.imapClient.Caps["IDLE"] {
return fmt.Errorf("The server %q does not support IDLE\n", m.cfg.ImapServer)
}
*/
m.info.Printf("Connected with %q\n", m.cfg.ImapServer)
_, err = m.imapClient.Login(m.cfg.Email, m.cfg.EmailPass)
if err != nil {
m.eror.Println("Unable to login:", m.cfg.Email)
return err
}
return nil
}
// dial open imap socket
func dial(host string) (*imap.Client, error) {
var client *imap.Client
var err error
if strings.HasSuffix(host, ":993") {
client, err = imap.DialTLS(host, nil)
} else {
client, err = imap.Dial(host)
}
if err != nil {
return nil, err
}
return client, nil
}
func (mc *MailCon) dial() (c *imap.Client, err error) {
// Decide what method to use for dialing into the server
var serverAddr string = fmt.Sprintf("%s:%d", mc.conf.Hostname, mc.conf.Port)
if 993 == mc.conf.Port {
c, err = imap.DialTLS(serverAddr, nil)
} else {
c, err = imap.Dial(serverAddr)
}
// If dialing went wrong, return the error
if err != nil {
return nil, err
}
// Check for STARTTLS and use appropriate method and config object if need be
if c.Caps["STARTTLS"] {
_, err = mc.waitFor(c.StartTLS(&tls.Config{
InsecureSkipVerify: mc.conf.SkipCertificateVerification,
}))
}
// Identify this client at the IMAP server
if c.Caps["ID"] {
_, err = mc.waitFor(c.ID("name", "watney"))
}
return c, err
}
//use imap to delete a mail
func (email *Email) DeleteEmail(w rest.ResponseWriter, r *rest.Request) {
log.Printf("delete email...")
addr := r.FormValue("imapAddr")
//port := r.FormValue("smtpPort")
user := r.FormValue("user")
pwd := r.FormValue("pwd")
id := r.FormValue("id")
//check params, return error
//create imap client
var (
c *imap.Client
cmd *imap.Command
rsp *imap.Response
)
// Connect to the server
c, _ = imap.Dial(addr)
// Remember to log out and close the connection when finished
defer c.Logout(30 * time.Second)
// Print server greeting (first response in the unilateral server data queue)
log.Printf("Server says hello:%s", c.Data[0].Info)
c.Data = nil
// Enable encryption, if supported by the server
if c.Caps["STARTTLS"] {
c.StartTLS(nil)
}
// Authenticate
if c.State() == imap.Login {
c.Login(user, pwd)
}
// List all top-level mailboxes, wait for the command to finish
cmd, _ = imap.Wait(c.List("", "%"))
// Print mailbox information
log.Printf("\nTop-level mailboxes:")
for _, rsp = range cmd.Data {
log.Printf("|--%s", rsp.MailboxInfo())
}
// Check for new unilateral server data responses
for _, rsp = range c.Data {
log.Printf("Server data:%s", rsp)
}
c.Data = nil
// Open a mailbox (synchronous command - no need for imap.Wait)
c.Select("INBOX", true)
log.Printf("\nMailbox status:%s\n", c.Mailbox)
if c.Mailbox == nil {
resp := EmailJsonResponse{Success: true}
w.WriteJson(&resp)
return
}
//use Expunge to delete a mail
set, _ := imap.NewSeqSet("")
mid, _ := strconv.Atoi(id)
set.AddNum(uint32(mid))
//delete mail
cmd, err := c.Expunge(set)
if err != nil {
log.Printf("%v ", cmd)
} else {
log.Printf("delete mail ok")
}
}
func (emaill *Email) getEmailContentUseIMAP(w rest.ResponseWriter, r *rest.Request) {
addr := r.FormValue("imapAddr")
port := r.FormValue("imapPort")
user := r.FormValue("user")
pwd := r.FormValue("pwd")
id := r.FormValue("id")
address := addr + ":" + port
log.Printf("get email content use imap %s\n", address)
var (
c *imap.Client
cmd *imap.Command
rsp *imap.Response
)
// Connect to the server
c, err := imap.Dial(addr)
if err != nil {
log.Printf("dial %s error\n", address)
return
}
// Remember to log out and close the connection when finished
defer c.Logout(30 * time.Second)
// Print server greeting (first response in the unilateral server data queue)
log.Printf("Server says hello:%s", c.Data[0].Info)
c.Data = nil
// Enable encryption, if supported by the server
if c.Caps["STARTTLS"] {
c.StartTLS(nil)
}
// Authenticate
if c.State() == imap.Login {
c.Login(user, pwd)
}
// List all top-level mailboxes, wait for the command to finish
cmd, _ = imap.Wait(c.List("", "%"))
// Print mailbox information
log.Printf("\nTop-level mailboxes:")
for _, rsp = range cmd.Data {
log.Printf("|--%s", rsp.MailboxInfo())
}
// Check for new unilateral server data responses
for _, rsp = range c.Data {
log.Printf("Server data:%s", rsp)
}
c.Data = nil
// Open a mailbox (synchronous command - no need for imap.Wait)
c.Select("INBOX", true)
log.Printf("\nMailbox status:%s\n", c.Mailbox)
if c.Mailbox == nil {
resp := EmailJsonResponse{Success: true}
w.WriteJson(&resp)
return
}
// Fetch the headers of the 10 most recent messages
set, _ := imap.NewSeqSet("")
set.Add(id)
// if c.Mailbox.Messages >= 10 {
// set.AddRange(c.Mailbox.Messages-9, c.Mailbox.Messages) //测试只取最新一封邮件
// } else {
// set.Add("1:*")
// }
cmd, _ = c.Fetch(set, "RFC822.HEADER", "RFC822.TEXT") //指定要获取的内容
// Process responses while the command is running
log.Printf("\nget mail [%s] messages:", id)
for cmd.InProgress() {
// Wait for the next response (no timeout)
c.Recv(-1)
// Process command data
for _, rsp = range cmd.Data {
header := imap.AsBytes(rsp.MessageInfo().Attrs["RFC822.HEADER"])
if msg, _ := mail.ReadMessage(bytes.NewReader(header)); msg != nil {
subject := msg.Header.Get("Subject")
log.Printf("|--%s", subject)
realSubject := GetRealSubject(subject)
log.Printf("in rest_email.go: get real subject")
log.Printf(realSubject)
senderAddr := msg.Header.Get("From")
recverAddrList := msg.Header.Get("To")
realSenderAddr := GetRealSubject(senderAddr)
realRecverAddrList := GetRealSubject(recverAddrList)
body := imap.AsBytes(rsp.MessageInfo().Attrs["RFC822.TEXT"])
//log.Printf("email body: %s", body)
//realBody := GetRealBody(string(body))
headerAndBody := make([]byte, len(header)+len(body))
copy(headerAndBody, header)
copy(headerAndBody[len(header):], body)
msg, _ := mail.ReadMessage(bytes.NewReader(headerAndBody))
mime, _ := enmime.ParseMIMEBody(msg)
realBody := mime.Text //如果原始内容为html，会去掉html元素标签
log.Printf("real body: %s", realBody)
//获取MIMEPart所有节点内容
// log.Printf("root ======================")
// root := mime.Root
// if root != nil {
// log.Printf(string(root.Content()))
// log.Printf("child==========")
// if child := root.FirstChild(); child != nil {
// log.Printf(string(child.Content()))
// }
// }
attachments := mime.Attachments
log.Printf("attachments len=%d", len(attachments))
count := len(attachments)
var attachmentList []Attachment = nil
var data EmailContent
if count > 0 {
attachmentList = make([]Attachment, count)
for i := 0; i < len(attachments); i++ {
name := attachments[i].FileName()
content := attachments[i].Content() //todo encode by base64
log.Printf("name===%s", name)
attachmentList[i] = Attachment{Name: name, Body: string(content)}
}
}
data = EmailContent{Subject: realSubject, SenderAddr: realSenderAddr,
RecverAddrList: realRecverAddrList, Content: realBody,
Attachments: attachmentList}
resp := EmailJsonResponse{Success: true, Data: data}
w.WriteJson(resp)
}
}
cmd.Data = nil
// Process unilateral server data
for _, rsp = range c.Data {
log.Printf("Server data:%s", rsp)
}
c.Data = nil
}
// Check command completion status
if rsp, err := cmd.Result(imap.OK); err != nil {
if err == imap.ErrAborted {
log.Printf("Fetch command aborted\n")
} else {
log.Printf("Fetch error:%s\n", rsp.Info)
}
}
}
func main() {
token := flag.String("token", "", "The Telegram bot token")
to := flag.String("to", "", "The mail recipient")
from := flag.String("from", "", "The mail sender")
server := flag.String("server", "", "The mail server")
port := flag.Int("port", 587, "The mail server port")
user := flag.String("user", "", "")
pass := flag.String("pass", "", "")
subject := flag.String("subject", "", "")
flag.Parse()
bot, err := telebot.NewBot(*token)
if err != nil {
return
}
// Fetching Mails and send as Telegram messages
var (
c *imap.Client
cmd *imap.Command
rsp *imap.Response
)
c, _ = imap.Dial(*server)
defer c.Logout(30 * time.Second)
c.Data = nil
if c.Caps["STARTTLS"] {
c.StartTLS(nil)
}
if c.State() == imap.Login {
c.Login(*user, *pass)
}
cmd, _ = imap.Wait(c.List("", "%"))
c.Data = nil
c.Select("INBOX", true)
set, _ := imap.NewSeqSet("")
set.Add("1:*")
cmd, _ = c.Fetch(set, "RFC822.HEADER")
for cmd.InProgress() {
c.Recv(-1)
for _, rsp = range cmd.Data {
header := imap.AsBytes(rsp.MessageInfo().Attrs["RFC822.HEADER"])
if msg, _ := mail.ReadMessage(bytes.NewReader(header)); msg != nil {
fmt.Println("|--", msg.Header.Get("FROM"))
}
}
cmd.Data = nil
c.Data = nil
}
if rsp, err := cmd.Result(imap.OK); err != nil {
if err == imap.ErrAborted {
fmt.Println("Fetch command aborted")
} else {
fmt.Println("Fetch error:", rsp.Info)
}
}
/*
* Listen to Telegram messages and send as mail
*/
messages := make(chan telebot.Message)
bot.Listen(messages, 1*time.Second)
for message := range messages {
m := gomail.NewMessage()
m.SetHeader("From", *from)
m.SetHeader("To", *to)
m.SetHeader("Subject", *subject)
m.SetBody("text/html", message.Text)
d := gomail.NewPlainDialer(*server, *port, *user, *pass)
d.TLSConfig = &tls.Config{InsecureSkipVerify: true}
if err := d.DialAndSend(m); err != nil {
panic(err)
}
}
}
// Fetch email for the specified user and host.
func Fetch(host, user, pass string) {
c, err := imap.Dial(host)
if err != nil {
log.Print(err)
return
}
defer c.Logout(30 * time.Second)
log.Println("Server says hello:", c.Data[0].Info)
c.Data = nil
if c.Caps["STARTTLS"] {
c.StartTLS(nil)
}
if c.State() == imap.Login {
c.Login(user, pass)
}
cmd, err := imap.Wait(c.List("", "%"))
if err != nil {
log.Print(err)
return
}
log.Println("\nTop-level mailboxes:")
for _, rsp := range cmd.Data {
log.Println("|--", rsp.MailboxInfo())
}
for _, rsp := range c.Data {
log.Println("Server data:", rsp)
}
c.Data = nil
c.Select("INBOX", true)
log.Print("\nMailbox status:\n", c.Mailbox)
set, _ := imap.NewSeqSet("")
if c.Mailbox.Messages >= 10 {
set.AddRange(c.Mailbox.Messages-9, c.Mailbox.Messages)
} else {
set.Add("1:*")
}
cmd, _ = c.Fetch(set, "RFC822.HEADER")
log.Println("\nMost recent messages:")
for cmd.InProgress() {
// Wait for the next response (no timeout)
c.Recv(-1)
// Process command data
for _, rsp := range cmd.Data {
header := imap.AsBytes(rsp.MessageInfo().Attrs["RFC822.HEADER"])
if msg, _ := mail.ReadMessage(bytes.NewReader(header)); msg != nil {
log.Println("|--", msg.Header.Get("Subject"))
}
}
cmd.Data = nil
// Process unilateral server data
for _, rsp := range c.Data {
log.Println("Server data:", rsp)
}
c.Data = nil
}
if rsp, err := cmd.Result(imap.OK); err != nil {
if err == imap.ErrAborted {
log.Println("Fetch command aborted")
} else {
log.Println("Fetch error:", rsp.Info)
}
}
}
func ExampleClient() {
//
// Note: most of error handling code is omitted for brevity
//
var (
c *imap.Client
cmd *imap.Command
rsp *imap.Response
)
// Connect to the server
c, _ = imap.Dial("imap.example.com")
// Remember to log out and close the connection when finished
defer c.Logout(30 * time.Second)
// Print server greeting (first response in the unilateral server data queue)
fmt.Println("Server says hello:", c.Data[0].Info)
c.Data = nil
// Enable encryption, if supported by the server
if c.Caps["STARTTLS"] {
c.StartTLS(nil)
}
// Authenticate
if c.State() == imap.Login {
c.Login("*****@*****.**", "mysupersecretpassword")
}
// List all top-level mailboxes, wait for the command to finish
cmd, _ = imap.Wait(c.List("", "%"))
// Print mailbox information
fmt.Println("\nTop-level mailboxes:")
for _, rsp = range cmd.Data {
fmt.Println("|--", rsp.MailboxInfo())
}
// Check for new unilateral server data responses
for _, rsp = range c.Data {
fmt.Println("Server data:", rsp)
}
c.Data = nil
// Open a mailbox (synchronous command - no need for imap.Wait)
c.Select("INBOX", true)
fmt.Print("\nMailbox status:\n", c.Mailbox)
// Fetch the headers of the 10 most recent messages
set, _ := imap.NewSeqSet("")
if c.Mailbox.Messages >= 10 {
set.AddRange(c.Mailbox.Messages-9, c.Mailbox.Messages)
} else {
set.Add("1:*")
}
cmd, _ = c.Fetch(set, "RFC822.HEADER")
// Process responses while the command is running
fmt.Println("\nMost recent messages:")
for cmd.InProgress() {
// Wait for the next response (no timeout)
c.Recv(-1)
// Process command data
for _, rsp = range cmd.Data {
header := imap.AsBytes(rsp.MessageInfo().Attrs["RFC822.HEADER"])
if msg, _ := mail.ReadMessage(bytes.NewReader(header)); msg != nil {
fmt.Println("|--", msg.Header.Get("Subject"))
}
}
cmd.Data = nil
// Process unilateral server data
for _, rsp = range c.Data {
fmt.Println("Server data:", rsp)
}
c.Data = nil
}
// Check command completion status
if rsp, err := cmd.Result(imap.OK); err != nil {
if err == imap.ErrAborted {
fmt.Println("Fetch command aborted")
} else {
fmt.Println("Fetch error:", rsp.Info)
}
}
}