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package xmpp
import (
"log"
"time"
//"os"
"strings"
"fmt"
"crypto/tls"
. "git.deuxfleurs.fr/Deuxfleurs/easybridge/connector"
gxmpp "github.com/mattn/go-xmpp"
)
// User id format: username@server (= JID)
// OR: nickname@room_name@muc_server
// Room id format: room_name@muc_server (= MUC ID)
type XMPP struct {
handler Handler
connectorLoopNum int
connected bool
timeout int
server string
port int
ssl bool
jid string
jid_localpart string
password string
nickname string
conn *gxmpp.Client
}
func (xm *XMPP) SetHandler(h Handler) {
xm.handler = h
}
func(xm *XMPP) Protocol() string {
return "xmpp"
}
func (xm *XMPP) Configure(c Configuration) error {
if xm.conn != nil {
xm.Close()
}
// Parse and validate configuration
var err error
xm.server, err = c.GetString("server")
if err != nil {
return err
}
xm.port, err = c.GetInt("port", 5222)
if err != nil {
return err
}
xm.ssl, err = c.GetBool("ssl", true)
if err != nil {
return err
}
xm.jid, err = c.GetString("jid")
if err != nil {
return err
}
jid_parts := strings.Split(xm.jid, "@")
if len(jid_parts) != 2 {
return fmt.Errorf("Invalid JID: %s", xm.jid)
}
if jid_parts[1] != xm.server {
return fmt.Errorf("JID %s not on server %s", xm.jid, xm.server)
}
xm.jid_localpart = jid_parts[0]
xm.nickname = xm.jid_localpart
xm.password, err = c.GetString("password")
if err != nil {
return err
}
// Try to connect
xm.connectorLoopNum += 1
go xm.connectLoop(xm.connectorLoopNum)
for i := 0; i < 42; i++ {
time.Sleep(time.Duration(1)*time.Second)
if xm.connected {
return nil
}
}
return fmt.Errorf("Failed to connect after 42s attempting")
}
func (xm *XMPP) connectLoop(num int) {
xm.timeout = 10
for {
if xm.connectorLoopNum != num {
return
}
tc := &tls.Config{
ServerName: strings.Split(xm.jid, "@")[1],
InsecureSkipVerify: true,
}
options := gxmpp.Options{
Host: xm.server,
User: xm.jid,
Password: xm.password,
NoTLS: true,
StartTLS: xm.ssl,
Session: true,
TLSConfig: tc,
}
var err error
xm.conn, err = options.NewClient()
if err != nil {
xm.connected = false
fmt.Printf("XMPP failed to connect / disconnected: %s\n", err)
fmt.Printf("Retrying in %ds\n", xm.timeout)
time.Sleep(time.Duration(xm.timeout) * time.Second)
xm.timeout *= 2
if xm.timeout > 600 {
xm.timeout = 600
}
} else {
xm.connected = true
xm.timeout = 10
err = xm.handleXMPP()
if err != nil {
xm.connected = false
fmt.Printf("XMPP disconnected: %s\n", err)
fmt.Printf("Reconnecting.\n")
}
}
}
}
func (xm *XMPP) xmppKeepAlive() chan bool {
done := make(chan bool)
go func() {
ticker := time.NewTicker(90 * time.Second)
defer ticker.Stop()
for {
select {
case <-ticker.C:
if err := xm.conn.PingC2S("", ""); err != nil {
log.Printf("PING failed %#v\n", err)
}
case <-done:
return
}
}
}()
return done
}
func (xm *XMPP) handleXMPP() error {
done := xm.xmppKeepAlive()
defer close(done)
for {
m, err := xm.conn.Recv()
if err != nil {
return err
}
switch v := m.(type) {
case gxmpp.Chat:
log.Printf("== Receiving %#v\n", v)
if v.Text == "" || v.Remote == xm.jid {
continue
}
event := &Event{
Type: EVENT_MESSAGE,
Text: v.Text,
}
log.Printf("Remote: %s\n", v.Remote)
if strings.HasPrefix(event.Text, "/me ") {
event.Type = EVENT_ACTION
event.Text = strings.Replace(event.Text, "/me ", "", 1)
}
if v.Type == "chat" {
remote_jid := strings.Split(v.Remote, "/")[0]
event.Author = UserID(remote_jid)
xm.handler.Event(event)
}
if v.Type == "groupchat" {
remote := strings.Split(v.Remote, "/")
if len(remote) != 2 {
log.Printf("Invalid remote: %s\n", v.Remote)
continue
}
event.Room = RoomID(remote[0])
event.Author = UserID(remote[1] + "@" + remote[0])
if strings.Contains(v.Text, "has set the subject to:") {
// TODO
continue
}
xm.handler.Event(event)
}
case gxmpp.Presence:
// Do nothing.
}
}
}
func (xm *XMPP) User() UserID {
return UserID(xm.jid)
}
func (xm *XMPP) SetUserInfo(info *UserInfo) error {
//TODO
return fmt.Errorf("Not implemented")
}
func (xm *XMPP) SetRoomInfo(roomId RoomID, info *RoomInfo) error {
// TODO
return fmt.Errorf("Not implemented")
}
func (xm *XMPP) Join(roomId RoomID) error {
fmt.Printf("Join %s with nick %s\n", roomId, xm.nickname)
_, err := xm.conn.JoinMUCNoHistory(string(roomId), xm.nickname)
return err
}
func (xm *XMPP) Invite(userId UserID, roomId RoomID) error {
// TODO
return fmt.Errorf("Not implemented")
}
func (xm *XMPP) Leave(roomId RoomID) {
// TODO
}
func (xm *XMPP) Send(event *Event) error {
if len(event.Recipient) > 0 {
xm.conn.Send(gxmpp.Chat{
Type: "chat",
Remote: string(event.Recipient),
Text: event.Text,
})
return nil
} else if len(event.Room) > 0 {
xm.conn.Send(gxmpp.Chat{
Type: "groupchat",
Remote: string(event.Room),
Text: event.Text,
})
return nil
} else {
return fmt.Errorf("Invalid event")
}
}
func (xm *XMPP) Close() {
xm.conn.Close()
xm.conn = nil
xm.connectorLoopNum += 1
}
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