// 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 connect(user, authToken string) (*imap.Client, error) {
c, err := imap.DialTLS("imap.gmail.com:993", nil)
if err != nil {
return nil, err
}
if _, err = c.Auth(oauthSASL{user, authToken}); err != nil {
c.Logout(2 * time.Second)
return nil, err
}
return c, 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
}
// Dial connects to the given address.
func (c *IMAPConnection) Dial(address string) error {
logger.Debugf("connecting to %s", address)
tlsConfig := &tls.Config{}
var err error
c.conn, err = imap.DialTLS(address, tlsConfig)
if err != nil {
logger.Errorf("failed to connect: %s", err)
return err
}
return nil
}
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
}
func imapConnect(server string) *imap.Client {
user, password := getCredentials(server)
c, err := imap.DialTLS(server, nil)
if err != nil {
log.Fatal(err)
}
if c.State() == imap.Login {
if _, err := c.Login(user, password); err != nil {
log.Fatal(err)
}
} else {
log.Fatal("Connection not in Login state. Cannot login.")
}
return c
}
// 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
}
// newIMAPClient will initiate a new IMAP connection with the given creds.
func newIMAPClient(host, username, password, mailbox string) (*imap.Client, error) {
client, err := imap.DialTLS(host, new(tls.Config))
if err != nil {
return client, err
}
_, err = client.Login(username, password)
if err != nil {
return client, err
}
_, err = imap.Wait(client.Select(mailbox, false))
if err != nil {
return client, 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
}
// connect sets up a new IMAPS connection to the given host using the given
// credentials. The name parameter should be a human-readable name for this
// mailbox.
func Connect(notify chan bool,
name string,
address string,
username string,
password string,
folder string,
poll time.Duration) {
// Connect to the server
fmt.Printf("%s: connecting to server...\n", name)
c, err := imap.DialTLS(address, nil)
if err != nil {
fmt.Printf("%s: connection failed, retrying in 3 minutes\n", name)
fmt.Println(" ", err)
Errs[name] = 1
notify <- false
time.Sleep(3 * time.Minute)
go Connect(notify, name, address, username, password, folder, poll)
return
}
// Connected successfully!
Errs[name] = 0
// Remember to log out and close the connection when finished
defer c.Logout(30 * time.Second)
// Authenticate
if c.State() == imap.Login {
fmt.Printf("login %s '%s' '%s'\n", address, username, password)
_, err = c.Login(username, password)
} else {
fmt.Printf("%s: no login presented, exiting...\n", name)
Errs[name] = 3
notify <- false
return
}
if err != nil {
fmt.Printf("%s: login failed (%s), exiting...\n", name, err)
Errs[name] = 4
notify <- false
return
}
// If IDLE isn't supported, we're not going to fall back on polling
// Time to abandon ship!
if !c.Caps["IDLE"] {
fmt.Printf("%s: server does not support IMAP IDLE, exiting...\n", name)
Errs[name] = 2
notify <- false
return
}
_, err = c.Select(folder, true)
if err != nil {
fmt.Printf("%s: could not open folder %s (%s), exiting...\n", name, folder, err)
}
// Get initial unread messages count
fmt.Printf("%s initial state: ", name)
UpdateTray(c, notify, name)
// And go to IMAP IDLE mode
cmd, err := c.Idle()
if err != nil {
// Fast reconnect
fmt.Printf("%s: connection failed, reconnecting...\n", name)
fmt.Println(" ", err)
Errs[name] = 5
go Connect(notify, name, address, username, password, folder, poll)
return
}
// Process responses while idling
for cmd.InProgress() {
// Wait for server messages
// Refresh every `poll` to avoid disconnection
// Defaults to 29 minutes (see spec)
err = c.Recv(poll)
if err == io.EOF {
fmt.Printf("%s: connection closed, reconnecting...\n", name)
fmt.Println(" ", err)
Errs[name] = 5
go Connect(notify, name, address, username, password, folder, poll)
return
}
if err != nil && err != imap.ErrTimeout {
fmt.Printf("%s: error during receive: %s\n", name, err)
}
// We don't really care about the data, just that there *is* data
cmd.Data = nil
c.Data = nil
// Update our view of the inbox
c.IdleTerm()
fmt.Printf("%s state: ", name)
UpdateTray(c, notify, name)
cmd, err = c.Idle()
if err != nil {
fmt.Printf("%s: connection failed (%s), reconnecting...\n", name, err)
fmt.Println(" ", err)
Errs[name] = 5
go Connect(notify, name, address, username, password, folder, poll)
return
}
}
}