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matterbridge/bridge/xmpp/xmpp.go
ValdikSS be04d1a862 Send attached files to XMPP in different message with OOB data and without body (#421)
Conversations can't show inline pictures if there's anything besides URL in the message body.
Workaround this issue by sending one usual message and one message with OOB data and without message body.
The second message should not be shown in the clients without OOB support, so the user won't see the empty message.
2018-05-09 23:04:10 +02:00

247 lines
5.9 KiB
Go

package bxmpp
import (
"crypto/tls"
"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
"github.com/42wim/matterbridge/bridge/helper"
"github.com/jpillora/backoff"
"github.com/matterbridge/go-xmpp"
"strings"
"time"
)
type Bxmpp struct {
xc *xmpp.Client
xmppMap map[string]string
*bridge.Config
}
func New(cfg *bridge.Config) bridge.Bridger {
b := &Bxmpp{Config: cfg}
b.xmppMap = make(map[string]string)
return b
}
func (b *Bxmpp) Connect() error {
var err error
b.Log.Infof("Connecting %s", b.GetString("Server"))
b.xc, err = b.createXMPP()
if err != nil {
b.Log.Debugf("%#v", err)
return err
}
b.Log.Info("Connection succeeded")
go func() {
initial := true
bf := &backoff.Backoff{
Min: time.Second,
Max: 5 * time.Minute,
Jitter: true,
}
for {
if initial {
b.handleXMPP()
initial = false
}
d := bf.Duration()
b.Log.Infof("Disconnected. Reconnecting in %s", d)
time.Sleep(d)
b.xc, err = b.createXMPP()
if err == nil {
b.Remote <- config.Message{Username: "system", Text: "rejoin", Channel: "", Account: b.Account, Event: config.EVENT_REJOIN_CHANNELS}
b.handleXMPP()
bf.Reset()
}
}
}()
return nil
}
func (b *Bxmpp) Disconnect() error {
return nil
}
func (b *Bxmpp) JoinChannel(channel config.ChannelInfo) error {
b.xc.JoinMUCNoHistory(channel.Name+"@"+b.GetString("Muc"), b.GetString("Nick"))
return nil
}
func (b *Bxmpp) Send(msg config.Message) (string, error) {
// ignore delete messages
if msg.Event == config.EVENT_MSG_DELETE {
return "", nil
}
b.Log.Debugf("=> Receiving %#v", msg)
// Upload a file (in xmpp case send the upload URL because xmpp has no native upload support)
if msg.Extra != nil {
for _, rmsg := range helper.HandleExtra(&msg, b.General) {
b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: rmsg.Channel + "@" + b.GetString("Muc"), Text: rmsg.Username + rmsg.Text})
}
if len(msg.Extra["file"]) > 0 {
return b.handleUploadFile(&msg)
}
}
// Post normal message
_, err := b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Text: msg.Username + msg.Text})
if err != nil {
return "", err
}
return "", nil
}
func (b *Bxmpp) createXMPP() (*xmpp.Client, error) {
tc := new(tls.Config)
tc.InsecureSkipVerify = b.GetBool("SkipTLSVerify")
tc.ServerName = strings.Split(b.GetString("Server"), ":")[0]
options := xmpp.Options{
Host: b.GetString("Server"),
User: b.GetString("Jid"),
Password: b.GetString("Password"),
NoTLS: true,
StartTLS: true,
TLSConfig: tc,
Debug: b.GetBool("debug"),
Logger: b.Log.Writer(),
Session: true,
Status: "",
StatusMessage: "",
Resource: "",
InsecureAllowUnencryptedAuth: false,
}
var err error
b.xc, err = options.NewClient()
return b.xc, err
}
func (b *Bxmpp) xmppKeepAlive() chan bool {
done := make(chan bool)
go func() {
ticker := time.NewTicker(90 * time.Second)
defer ticker.Stop()
for {
select {
case <-ticker.C:
b.Log.Debugf("PING")
err := b.xc.PingC2S("", "")
if err != nil {
b.Log.Debugf("PING failed %#v", err)
}
case <-done:
return
}
}
}()
return done
}
func (b *Bxmpp) handleXMPP() error {
var ok bool
done := b.xmppKeepAlive()
defer close(done)
for {
m, err := b.xc.Recv()
if err != nil {
return err
}
switch v := m.(type) {
case xmpp.Chat:
if v.Type == "groupchat" {
b.Log.Debugf("== Receiving %#v", v)
// skip invalid messages
if b.skipMessage(v) {
continue
}
rmsg := config.Message{Username: b.parseNick(v.Remote), Text: v.Text, Channel: b.parseChannel(v.Remote), Account: b.Account, UserID: v.Remote}
// check if we have an action event
rmsg.Text, ok = b.replaceAction(rmsg.Text)
if ok {
rmsg.Event = config.EVENT_USER_ACTION
}
b.Log.Debugf("<= Sending message from %s on %s to gateway", rmsg.Username, b.Account)
b.Log.Debugf("<= Message is %#v", rmsg)
b.Remote <- rmsg
}
case xmpp.Presence:
// do nothing
}
}
}
func (b *Bxmpp) replaceAction(text string) (string, bool) {
if strings.HasPrefix(text, "/me ") {
return strings.Replace(text, "/me ", "", -1), true
}
return text, false
}
// handleUploadFile handles native upload of files
func (b *Bxmpp) handleUploadFile(msg *config.Message) (string, error) {
var urldesc = ""
for _, f := range msg.Extra["file"] {
fi := f.(config.FileInfo)
if fi.Comment != "" {
msg.Text += fi.Comment + ": "
}
if fi.URL != "" {
msg.Text = fi.URL
if fi.Comment != "" {
msg.Text = fi.Comment + ": " + fi.URL
urldesc = fi.Comment
}
}
_, err := b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Text: msg.Username + msg.Text})
if err != nil {
return "", err
}
if fi.URL != "" {
b.xc.SendOOB(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Ooburl: fi.URL, Oobdesc: urldesc})
}
}
return "", nil
}
func (b *Bxmpp) parseNick(remote string) string {
s := strings.Split(remote, "@")
if len(s) > 0 {
s = strings.Split(s[1], "/")
if len(s) == 2 {
return s[1] // nick
}
}
return ""
}
func (b *Bxmpp) parseChannel(remote string) string {
s := strings.Split(remote, "@")
if len(s) >= 2 {
return s[0] // channel
}
return ""
}
// skipMessage skips messages that need to be skipped
func (b *Bxmpp) skipMessage(message xmpp.Chat) bool {
// skip messages from ourselves
if b.parseNick(message.Remote) == b.GetString("Nick") {
return true
}
// skip empty messages
if message.Text == "" {
return true
}
// skip subject messages
if strings.Contains(message.Text, "</subject>") {
return true
}
// skip delayed messages
t := time.Time{}
return message.Stamp != t
}