825 lines
19 KiB
Go
825 lines
19 KiB
Go
package xmpp
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import (
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"bytes"
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"encoding/base64"
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"encoding/xml"
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"fmt"
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"github.com/pkg/errors"
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"io"
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"strconv"
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"strings"
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"dev.narayana.im/narayana/telegabber/persistence"
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"dev.narayana.im/narayana/telegabber/telegram"
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"dev.narayana.im/narayana/telegabber/xmpp/extensions"
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"dev.narayana.im/narayana/telegabber/xmpp/gateway"
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log "github.com/sirupsen/logrus"
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"github.com/soheilhy/args"
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"gosrc.io/xmpp"
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"gosrc.io/xmpp/stanza"
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)
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const (
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TypeVCardTemp byte = iota
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TypeVCard4
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)
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const NodeVCard4 string = "urn:xmpp:vcard4"
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func logPacketType(p stanza.Packet) {
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log.Warnf("Ignoring packet: %T\n", p)
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}
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// HandleIq processes an incoming XMPP iq
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func HandleIq(s xmpp.Sender, p stanza.Packet) {
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iq, ok := p.(*stanza.IQ)
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if !ok {
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logPacketType(p)
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return
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}
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log.Debugf("%#v", iq)
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if iq.Type == "get" {
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_, ok := iq.Payload.(*extensions.IqVcardTemp)
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if ok {
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go handleGetVcardIq(s, iq, TypeVCardTemp)
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return
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}
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pubsub, ok := iq.Payload.(*stanza.PubSubGeneric)
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if ok {
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if pubsub.Items != nil && pubsub.Items.Node == NodeVCard4 {
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go handleGetVcardIq(s, iq, TypeVCard4)
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return
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}
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}
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_, ok = iq.Payload.(*stanza.DiscoInfo)
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if ok {
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go handleGetDiscoInfo(s, iq)
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return
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}
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_, ok = iq.Payload.(*stanza.DiscoItems)
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if ok {
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go handleGetDiscoItems(s, iq)
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return
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}
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_, ok = iq.Payload.(*extensions.QueryRegister)
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if ok {
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go handleGetQueryRegister(s, iq)
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return
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}
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} else if iq.Type == "set" {
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query, ok := iq.Payload.(*extensions.QueryRegister)
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if ok {
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go handleSetQueryRegister(s, iq, query)
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return
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}
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}
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}
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// HandleMessage processes an incoming XMPP message
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func HandleMessage(s xmpp.Sender, p stanza.Packet) {
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msg, ok := p.(stanza.Message)
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if !ok {
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logPacketType(p)
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return
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}
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component, ok := s.(*xmpp.Component)
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if !ok {
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log.Error("Not a component")
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return
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}
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if msg.Type != "error" && msg.Body != "" {
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log.WithFields(log.Fields{
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"from": msg.From,
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"to": msg.To,
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}).Warn("Message")
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log.Debugf("%#v", msg)
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bare, resource, ok := gateway.SplitJID(msg.From)
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if !ok {
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return
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}
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gatewayJid := gateway.Jid.Bare()
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session, ok := sessions[bare]
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if !ok {
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if msg.To == gatewayJid {
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gateway.SubscribeToTransport(component, msg.From)
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} else {
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log.Error("Message from stranger")
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}
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return
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}
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toID, ok := toToID(msg.To)
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if ok {
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var reply extensions.Reply
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var fallback extensions.Fallback
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var replace extensions.Replace
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msg.Get(&reply)
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msg.Get(&fallback)
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msg.Get(&replace)
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log.Debugf("reply: %#v", reply)
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log.Debugf("fallback: %#v", fallback)
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log.Debugf("replace: %#v", replace)
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var replyId int64
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var err error
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text := msg.Body
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if len(reply.Id) > 0 {
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chatId, msgId, err := gateway.IdsDB.GetByXmppId(session.Session.Login, bare, reply.Id)
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if err == nil {
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if chatId != toID {
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log.Warnf("Chat mismatch: %v ≠ %v", chatId, toID)
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} else {
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replyId = msgId
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log.Debugf("replace tg: %#v %#v", chatId, msgId)
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}
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} else {
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id := reply.Id
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if id[0] == 'e' {
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id = id[1:]
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}
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replyId, err = strconv.ParseInt(id, 10, 64)
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if err != nil {
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log.Warn(errors.Wrap(err, "Failed to parse message ID!"))
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}
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}
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if replyId != 0 && fallback.For == "urn:xmpp:reply:0" && len(fallback.Body) > 0 {
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body := fallback.Body[0]
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var start, end int64
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start, err = strconv.ParseInt(body.Start, 10, 64)
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if err != nil {
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log.WithFields(log.Fields{
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"start": body.Start,
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}).Warn(errors.Wrap(err, "Failed to parse fallback start!"))
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}
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end, err = strconv.ParseInt(body.End, 10, 64)
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if err != nil {
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log.WithFields(log.Fields{
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"end": body.End,
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}).Warn(errors.Wrap(err, "Failed to parse fallback end!"))
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}
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fullRunes := []rune(text)
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cutRunes := make([]rune, 0, len(text)-int(end-start))
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cutRunes = append(cutRunes, fullRunes[:start]...)
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cutRunes = append(cutRunes, fullRunes[end:]...)
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text = string(cutRunes)
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}
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}
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var replaceId int64
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if replace.Id != "" {
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chatId, msgId, err := gateway.IdsDB.GetByXmppId(session.Session.Login, bare, replace.Id)
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if err == nil {
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if chatId != toID {
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gateway.SendTextMessage(msg.From, strconv.FormatInt(toID, 10), "<ERROR: Chat mismatch>", component)
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return
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}
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replaceId = msgId
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log.Debugf("replace tg: %#v %#v", chatId, msgId)
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} else {
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gateway.SendTextMessage(msg.From, strconv.FormatInt(toID, 10), "<ERROR: Could not find matching message to edit>", component)
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return
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}
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}
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session.SendMessageLock.Lock()
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defer session.SendMessageLock.Unlock()
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tgMessageId := session.ProcessOutgoingMessage(toID, text, msg.From, replyId, replaceId)
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if tgMessageId != 0 {
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if replaceId != 0 {
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// not needed (is it persistent among clients though?)
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/* err = gateway.IdsDB.ReplaceIdPair(session.Session.Login, bare, replace.Id, msg.Id, tgMessageId)
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if err != nil {
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log.Errorf("Failed to replace id %v with %v %v", replace.Id, msg.Id, tgMessageId)
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} */
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session.AddToEditOutbox(replace.Id, resource)
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} else {
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err = gateway.IdsDB.Set(session.Session.Login, bare, toID, tgMessageId, msg.Id)
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if err == nil {
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session.AddToOutbox(msg.Id, resource)
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} else {
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log.Errorf("Failed to save ids %v/%v %v", toID, tgMessageId, msg.Id)
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}
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}
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} else {
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/*
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// if a message failed to edit on Telegram side, match new XMPP ID with old Telegram ID anyway
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if replaceId != 0 {
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err = gateway.IdsDB.ReplaceXmppId(session.Session.Login, bare, replace.Id, msg.Id)
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if err != nil {
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log.Errorf("Failed to replace id %v with %v", replace.Id, msg.Id)
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}
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} */
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}
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return
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} else {
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toJid, err := stanza.NewJid(msg.To)
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if err == nil && toJid.Bare() == gatewayJid && (strings.HasPrefix(msg.Body, "/") || strings.HasPrefix(msg.Body, "!")) {
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response := session.ProcessTransportCommand(msg.Body, resource)
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if response != "" {
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gateway.SendServiceMessage(msg.From, response, component)
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}
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return
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}
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}
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log.Warn("Unknown purpose of the message, skipping")
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}
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if msg.Body == "" {
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var privilege1 extensions.ComponentPrivilege1
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if ok := msg.Get(&privilege1); ok {
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log.Debugf("privilege1: %#v", privilege1)
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}
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for _, perm := range privilege1.Perms {
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if perm.Access == "message" && perm.Type == "outgoing" {
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gateway.MessageOutgoingPermissionVersion = 1
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}
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}
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var privilege2 extensions.ComponentPrivilege2
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if ok := msg.Get(&privilege2); ok {
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log.Debugf("privilege2: %#v", privilege2)
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}
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for _, perm := range privilege2.Perms {
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if perm.Access == "message" && perm.Type == "outgoing" {
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gateway.MessageOutgoingPermissionVersion = 2
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}
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}
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}
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if msg.Type == "error" {
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log.Errorf("MESSAGE ERROR: %#v", p)
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if msg.XMLName.Space == "jabber:component:accept" && msg.Error.Code == 401 {
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suffix := "@" + msg.From
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for bare := range sessions {
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if strings.HasSuffix(bare, suffix) {
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gateway.SendServiceMessage(bare, "Your server \""+msg.From+"\" does not allow to send carbons", component)
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}
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}
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}
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}
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}
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// HandlePresence processes an incoming XMPP presence
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func HandlePresence(s xmpp.Sender, p stanza.Packet) {
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prs, ok := p.(stanza.Presence)
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if !ok {
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logPacketType(p)
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return
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}
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if prs.Type == "subscribe" {
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handleSubscription(s, prs)
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}
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if prs.To == gateway.Jid.Bare() {
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handlePresence(s, prs)
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}
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}
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func handleSubscription(s xmpp.Sender, p stanza.Presence) {
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log.WithFields(log.Fields{
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"from": p.From,
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"to": p.To,
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}).Warn("Subscription request")
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log.Debugf("%#v", p)
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reply := stanza.Presence{Attrs: stanza.Attrs{
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From: p.To,
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To: p.From,
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Id: p.Id,
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Type: "subscribed",
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}}
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component, ok := s.(*xmpp.Component)
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if !ok {
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log.Error("Not a component")
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return
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}
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_ = gateway.ResumableSend(component, reply)
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toID, ok := toToID(p.To)
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if !ok {
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return
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}
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bare, _, ok := gateway.SplitJID(p.From)
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if !ok {
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return
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}
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session, ok := getTelegramInstance(bare, &persistence.Session{}, component)
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if !ok {
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return
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}
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go session.ProcessStatusUpdate(toID, "", "", gateway.SPImmed(false))
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}
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func handlePresence(s xmpp.Sender, p stanza.Presence) {
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presenceType := p.Type
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if presenceType == "" {
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presenceType = "online"
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}
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component, ok := s.(*xmpp.Component)
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if !ok {
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log.Error("Not a component")
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return
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}
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log.WithFields(log.Fields{
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"type": presenceType,
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"from": p.From,
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"to": p.To,
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}).Warn("Presence")
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log.Debugf("%#v", p)
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// create session
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bare, resource, ok := gateway.SplitJID(p.From)
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if !ok {
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return
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}
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session, ok := getTelegramInstance(bare, &persistence.Session{}, component)
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if !ok {
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return
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}
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switch p.Type {
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// destroy session
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case "unsubscribed", "unsubscribe":
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if session.Disconnect(resource, false) {
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sessionLock.Lock()
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delete(sessions, bare)
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sessionLock.Unlock()
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}
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// go offline
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case "unavailable", "error":
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session.Disconnect(resource, false)
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// go online
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case "probe", "", "online", "subscribe":
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// due to the weird implementation of go-tdlib wrapper, it won't
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// return the client instance until successful authorization
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go func() {
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err := session.Connect(resource)
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if err != nil {
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log.Error(errors.Wrap(err, "TDlib connection failure"))
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} else {
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for status := range session.StatusesRange() {
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show, description, typ := status.Destruct()
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newArgs := []args.V{
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gateway.SPImmed(false),
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}
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if typ != "" {
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newArgs = append(newArgs, gateway.SPType(typ))
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}
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go session.ProcessStatusUpdate(
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status.ID,
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description,
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show,
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newArgs...,
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)
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}
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session.UpdateChatNicknames()
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}
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}()
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}
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}
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func handleGetVcardIq(s xmpp.Sender, iq *stanza.IQ, typ byte) {
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log.WithFields(log.Fields{
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"from": iq.From,
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"to": iq.To,
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}).Warn("VCard request")
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fromJid, err := stanza.NewJid(iq.From)
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if err != nil {
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log.Error("Invalid from JID!")
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return
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}
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session, ok := sessions[fromJid.Bare()]
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if !ok {
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log.Error("IQ from stranger")
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return
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}
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toParts := strings.Split(iq.To, "@")
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toID, err := strconv.ParseInt(toParts[0], 10, 64)
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if err != nil {
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log.Error("Invalid IQ to")
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return
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}
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info, err := session.GetVcardInfo(toID)
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if err != nil {
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log.Error(err)
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return
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}
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answer := stanza.IQ{
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Attrs: stanza.Attrs{
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From: iq.To,
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To: iq.From,
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Id: iq.Id,
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Type: "result",
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},
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Payload: makeVCardPayload(typ, iq.To, info, session),
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}
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log.Debugf("%#v", answer)
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component, ok := s.(*xmpp.Component)
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if !ok {
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log.Error("Not a component")
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return
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}
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_ = gateway.ResumableSend(component, &answer)
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}
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func handleGetDiscoInfo(s xmpp.Sender, iq *stanza.IQ) {
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answer, err := stanza.NewIQ(stanza.Attrs{
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Type: stanza.IQTypeResult,
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From: iq.To,
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To: iq.From,
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Id: iq.Id,
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Lang: "en",
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})
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if err != nil {
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log.Errorf("Failed to create answer IQ: %v", err)
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return
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}
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disco := answer.DiscoInfo()
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_, ok := toToID(iq.To)
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if ok {
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disco.AddIdentity("", "account", "registered")
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disco.AddFeatures(stanza.NSMsgChatMarkers)
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disco.AddFeatures(stanza.NSMsgReceipts)
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} else {
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disco.AddIdentity("Telegram Gateway", "gateway", "telegram")
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disco.AddFeatures("jabber:iq:register")
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}
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answer.Payload = disco
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log.Debugf("%#v", answer)
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component, ok := s.(*xmpp.Component)
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if !ok {
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log.Error("Not a component")
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return
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}
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_ = gateway.ResumableSend(component, answer)
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}
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func handleGetDiscoItems(s xmpp.Sender, iq *stanza.IQ) {
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answer, err := stanza.NewIQ(stanza.Attrs{
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Type: stanza.IQTypeResult,
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From: iq.To,
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To: iq.From,
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Id: iq.Id,
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Lang: "en",
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})
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if err != nil {
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log.Errorf("Failed to create answer IQ: %v", err)
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return
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}
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answer.Payload = answer.DiscoItems()
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component, ok := s.(*xmpp.Component)
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if !ok {
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log.Error("Not a component")
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return
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}
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_ = gateway.ResumableSend(component, answer)
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}
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func handleGetQueryRegister(s xmpp.Sender, iq *stanza.IQ) {
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component, ok := s.(*xmpp.Component)
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if !ok {
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log.Error("Not a component")
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return
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}
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answer, err := stanza.NewIQ(stanza.Attrs{
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Type: stanza.IQTypeResult,
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From: iq.To,
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To: iq.From,
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Id: iq.Id,
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Lang: "en",
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})
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if err != nil {
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log.Errorf("Failed to create answer IQ: %v", err)
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return
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}
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var login string
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bare, _, ok := gateway.SplitJID(iq.From)
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if ok {
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session, ok := sessions[bare]
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if ok {
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login = session.Session.Login
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}
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}
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var query stanza.IQPayload
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if login == "" {
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query = extensions.QueryRegister{
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Instructions: fmt.Sprintf("Authorization in Telegram is a multi-step process, so please accept %v to your contacts and follow further instructions (provide the authentication code there, etc.).\nFor now, please provide your login.", iq.To),
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}
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} else {
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query = extensions.QueryRegister{
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Instructions: "Already logged in",
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Username: login,
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Registered: &extensions.QueryRegisterRegistered{},
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}
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}
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answer.Payload = query
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|
|
|
log.Debugf("%#v", query)
|
|
|
|
_ = gateway.ResumableSend(component, answer)
|
|
|
|
if login == "" {
|
|
gateway.SubscribeToTransport(component, iq.From)
|
|
}
|
|
}
|
|
|
|
func handleSetQueryRegister(s xmpp.Sender, iq *stanza.IQ, query *extensions.QueryRegister) {
|
|
component, ok := s.(*xmpp.Component)
|
|
if !ok {
|
|
log.Error("Not a component")
|
|
return
|
|
}
|
|
|
|
answer, err := stanza.NewIQ(stanza.Attrs{
|
|
Type: stanza.IQTypeResult,
|
|
From: iq.To,
|
|
To: iq.From,
|
|
Id: iq.Id,
|
|
Lang: "en",
|
|
})
|
|
if err != nil {
|
|
log.Errorf("Failed to create answer IQ: %v", err)
|
|
return
|
|
}
|
|
|
|
defer gateway.ResumableSend(component, answer)
|
|
|
|
if query.Remove != nil {
|
|
iqAnswerSetError(answer, query, 405)
|
|
return
|
|
}
|
|
|
|
var login string
|
|
var session *telegram.Client
|
|
bare, resource, ok := gateway.SplitJID(iq.From)
|
|
if ok {
|
|
session, ok = sessions[bare]
|
|
if ok {
|
|
login = session.Session.Login
|
|
}
|
|
}
|
|
|
|
if login == "" {
|
|
if !ok {
|
|
session, ok = getTelegramInstance(bare, &persistence.Session{}, component)
|
|
if !ok {
|
|
iqAnswerSetError(answer, query, 500)
|
|
return
|
|
}
|
|
}
|
|
|
|
err := session.TryLogin(resource, query.Username)
|
|
if err != nil {
|
|
if err.Error() == telegram.TelegramAuthDone {
|
|
iqAnswerSetError(answer, query, 406)
|
|
} else {
|
|
iqAnswerSetError(answer, query, 500)
|
|
}
|
|
return
|
|
}
|
|
|
|
err = session.SetPhoneNumber(query.Username)
|
|
if err != nil {
|
|
iqAnswerSetError(answer, query, 500)
|
|
return
|
|
}
|
|
|
|
// everything okay, the response should be empty with no payload/error at this point
|
|
gateway.SubscribeToTransport(component, iq.From)
|
|
} else {
|
|
iqAnswerSetError(answer, query, 406)
|
|
}
|
|
}
|
|
|
|
func iqAnswerSetError(answer *stanza.IQ, payload *extensions.QueryRegister, code int) {
|
|
answer.Type = stanza.IQTypeError
|
|
answer.Payload = *payload
|
|
switch code {
|
|
case 400:
|
|
answer.Error = &stanza.Err{
|
|
Code: code,
|
|
Type: stanza.ErrorTypeModify,
|
|
Reason: "bad-request",
|
|
}
|
|
case 405:
|
|
answer.Error = &stanza.Err{
|
|
Code: code,
|
|
Type: stanza.ErrorTypeCancel,
|
|
Reason: "not-allowed",
|
|
Text: "Logging out is dangerous. If you are sure you would be able to receive the authentication code again, issue the /logout command to the transport",
|
|
}
|
|
case 406:
|
|
answer.Error = &stanza.Err{
|
|
Code: code,
|
|
Type: stanza.ErrorTypeModify,
|
|
Reason: "not-acceptable",
|
|
Text: "Phone number already provided, chat with the transport for further instruction",
|
|
}
|
|
case 500:
|
|
answer.Error = &stanza.Err{
|
|
Code: code,
|
|
Type: stanza.ErrorTypeWait,
|
|
Reason: "internal-server-error",
|
|
}
|
|
default:
|
|
log.Error("Unknown error code, falling back with empty reason")
|
|
answer.Error = &stanza.Err{
|
|
Code: code,
|
|
Type: stanza.ErrorTypeCancel,
|
|
Reason: "undefined-condition",
|
|
}
|
|
}
|
|
}
|
|
|
|
func toToID(to string) (int64, bool) {
|
|
toParts := strings.Split(to, "@")
|
|
if len(toParts) < 2 {
|
|
return 0, false
|
|
}
|
|
toID, err := strconv.ParseInt(toParts[0], 10, 64)
|
|
if err != nil {
|
|
log.WithFields(log.Fields{
|
|
"to": to,
|
|
}).Error(errors.Wrap(err, "Invalid to JID!"))
|
|
return 0, false
|
|
}
|
|
return toID, true
|
|
}
|
|
|
|
func makeVCardPayload(typ byte, id string, info telegram.VCardInfo, session *telegram.Client) stanza.IQPayload {
|
|
var base64Photo string
|
|
if info.Photo != nil {
|
|
file, path, err := session.ForceOpenFile(info.Photo, 32)
|
|
if err == nil {
|
|
defer file.Close()
|
|
|
|
buf := new(bytes.Buffer)
|
|
binval := base64.NewEncoder(base64.StdEncoding, buf)
|
|
_, err = io.Copy(binval, file)
|
|
binval.Close()
|
|
if err == nil {
|
|
base64Photo = buf.String()
|
|
} else {
|
|
log.Errorf("Error calculating base64: %v", path)
|
|
}
|
|
} else if path != "" {
|
|
log.Errorf("Photo does not exist: %v", path)
|
|
} else {
|
|
log.Errorf("PHOTO: %#v", err.Error())
|
|
}
|
|
}
|
|
|
|
if typ == TypeVCardTemp {
|
|
vcard := &extensions.IqVcardTemp{}
|
|
|
|
vcard.Fn.Text = info.Fn
|
|
if base64Photo != "" {
|
|
vcard.Photo.Type.Text = "image/jpeg"
|
|
vcard.Photo.Binval.Text = base64Photo
|
|
}
|
|
vcard.Nickname.Text = strings.Join(info.Nicknames, ",")
|
|
vcard.N.Given.Text = info.Given
|
|
vcard.N.Family.Text = info.Family
|
|
vcard.Tel.Number.Text = info.Tel
|
|
vcard.Desc.Text = info.Info
|
|
|
|
return vcard
|
|
} else if typ == TypeVCard4 {
|
|
nodes := []stanza.Node{}
|
|
if info.Fn != "" {
|
|
nodes = append(nodes, stanza.Node{
|
|
XMLName: xml.Name{Local: "fn"},
|
|
Nodes: []stanza.Node{
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "text"},
|
|
Content: info.Fn,
|
|
},
|
|
},
|
|
})
|
|
}
|
|
if base64Photo != "" {
|
|
nodes = append(nodes, stanza.Node{
|
|
XMLName: xml.Name{Local: "photo"},
|
|
Nodes: []stanza.Node{
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "uri"},
|
|
Content: "data:image/jpeg;base64," + base64Photo,
|
|
},
|
|
},
|
|
})
|
|
}
|
|
for _, nickname := range info.Nicknames {
|
|
nodes = append(nodes, stanza.Node{
|
|
XMLName: xml.Name{Local: "nickname"},
|
|
Nodes: []stanza.Node{
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "text"},
|
|
Content: nickname,
|
|
},
|
|
},
|
|
}, stanza.Node{
|
|
XMLName: xml.Name{Local: "impp"},
|
|
Nodes: []stanza.Node{
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "uri"},
|
|
Content: "https://t.me/" + nickname,
|
|
},
|
|
},
|
|
})
|
|
}
|
|
if info.Family != "" || info.Given != "" {
|
|
nodes = append(nodes, stanza.Node{
|
|
XMLName: xml.Name{Local: "n"},
|
|
Nodes: []stanza.Node{
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "surname"},
|
|
Content: info.Family,
|
|
},
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "given"},
|
|
Content: info.Given,
|
|
},
|
|
},
|
|
})
|
|
}
|
|
if info.Tel != "" {
|
|
nodes = append(nodes, stanza.Node{
|
|
XMLName: xml.Name{Local: "tel"},
|
|
Nodes: []stanza.Node{
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "uri"},
|
|
Content: "tel:" + info.Tel,
|
|
},
|
|
},
|
|
})
|
|
}
|
|
if info.Info != "" {
|
|
nodes = append(nodes, stanza.Node{
|
|
XMLName: xml.Name{Local: "note"},
|
|
Nodes: []stanza.Node{
|
|
stanza.Node{
|
|
XMLName: xml.Name{Local: "text"},
|
|
Content: info.Info,
|
|
},
|
|
},
|
|
})
|
|
}
|
|
|
|
pubsub := &stanza.PubSubGeneric{
|
|
Items: &stanza.Items{
|
|
Node: NodeVCard4,
|
|
List: []stanza.Item{
|
|
stanza.Item{
|
|
Id: id,
|
|
Any: &stanza.Node{
|
|
XMLName: xml.Name{Local: "vcard"},
|
|
Attrs: []xml.Attr{
|
|
xml.Attr{
|
|
Name: xml.Name{Local: "xmlns"},
|
|
Value: "urn:ietf:params:xml:ns:vcard-4.0",
|
|
},
|
|
},
|
|
Nodes: nodes,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
return pubsub
|
|
}
|
|
|
|
return nil
|
|
}
|