498 lines
10 KiB
Go
498 lines
10 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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"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/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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"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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}
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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 := splitFrom(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.SendPresence(component, msg.From, gateway.SPType("subscribe"))
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gateway.SendPresence(component, msg.From, gateway.SPType("subscribed"))
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} else {
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log.Error("Message from stranger")
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return
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}
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}
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toID, ok := toToID(msg.To)
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if ok {
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session.ProcessOutgoingMessage(toID, msg.Body, msg.From)
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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.SendMessage(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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}
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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 := splitFrom(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 := splitFrom(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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go session.ProcessStatusUpdate(
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status.ID,
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status.Description,
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status.XMPP,
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gateway.SPImmed(false),
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)
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}
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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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chat, user, err := session.GetContactByID(toID, nil)
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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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var fn, photo, nickname, given, family, tel, info string
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if chat != nil {
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fn = chat.Title
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if chat.Photo != nil {
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file, path, err := session.OpenPhotoFile(chat.Photo.Small, 32)
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if err == nil {
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defer file.Close()
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buf := new(bytes.Buffer)
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binval := base64.NewEncoder(base64.StdEncoding, buf)
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_, err = io.Copy(binval, file)
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binval.Close()
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if err == nil {
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photo = buf.String()
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} else {
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log.Errorf("Error calculating base64: %v", path)
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}
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} else if path != "" {
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log.Errorf("Photo does not exist: %v", path)
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} else {
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log.Errorf("PHOTO: %#v", err.Error())
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}
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}
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info = session.GetChatDescription(chat)
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}
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if user != nil {
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nickname = user.Username
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given = user.FirstName
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family = user.LastName
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tel = user.PhoneNumber
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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, fn, photo, nickname, given, family, tel, info),
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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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} else {
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disco.AddIdentity("Telegram Gateway", "gateway", "telegram")
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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 splitFrom(from string) (string, string, bool) {
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fromJid, err := stanza.NewJid(from)
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if err != nil {
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log.WithFields(log.Fields{
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"from": from,
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}).Error(errors.Wrap(err, "Invalid from JID!"))
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return "", "", false
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}
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return fromJid.Bare(), fromJid.Resource, true
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}
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func toToID(to string) (int64, bool) {
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toParts := strings.Split(to, "@")
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if len(toParts) < 2 {
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return 0, false
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}
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toID, err := strconv.ParseInt(toParts[0], 10, 64)
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if err != nil {
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log.WithFields(log.Fields{
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"to": to,
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}).Error(errors.Wrap(err, "Invalid to JID!"))
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return 0, false
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}
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return toID, true
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}
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func makeVCardPayload(typ byte, id, fn, photo, nickname, given, family, tel, info string) stanza.IQPayload {
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if typ == TypeVCardTemp {
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vcard := &extensions.IqVcardTemp{}
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vcard.Fn.Text = fn
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if photo != "" {
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vcard.Photo.Type.Text = "image/jpeg"
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vcard.Photo.Binval.Text = photo
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}
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vcard.Nickname.Text = nickname
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vcard.N.Given.Text = given
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vcard.N.Family.Text = family
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vcard.Tel.Number.Text = tel
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vcard.Desc.Text = info
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return vcard
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} else if typ == TypeVCard4 {
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nodes := []stanza.Node{}
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if fn != "" {
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nodes = append(nodes, stanza.Node{
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XMLName: xml.Name{Local: "fn"},
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Nodes: []stanza.Node{
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stanza.Node{
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XMLName: xml.Name{Local: "text"},
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Content: fn,
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},
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},
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})
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}
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if photo != "" {
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nodes = append(nodes, stanza.Node{
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XMLName: xml.Name{Local: "photo"},
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Nodes: []stanza.Node{
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stanza.Node{
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XMLName: xml.Name{Local: "uri"},
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Content: "data:image/jpeg;base64," + photo,
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},
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},
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})
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}
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if nickname != "" {
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nodes = append(nodes, stanza.Node{
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XMLName: xml.Name{Local: "nickname"},
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Nodes: []stanza.Node{
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stanza.Node{
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XMLName: xml.Name{Local: "text"},
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Content: nickname,
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},
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},
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}, stanza.Node{
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XMLName: xml.Name{Local: "impp"},
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Nodes: []stanza.Node{
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stanza.Node{
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XMLName: xml.Name{Local: "uri"},
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Content: "https://t.me/" + nickname,
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},
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},
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})
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}
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if family != "" || given != "" {
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nodes = append(nodes, stanza.Node{
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XMLName: xml.Name{Local: "n"},
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Nodes: []stanza.Node{
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stanza.Node{
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XMLName: xml.Name{Local: "surname"},
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Content: family,
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},
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stanza.Node{
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XMLName: xml.Name{Local: "given"},
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Content: given,
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},
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},
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})
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}
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if tel != "" {
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nodes = append(nodes, stanza.Node{
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XMLName: xml.Name{Local: "tel"},
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Nodes: []stanza.Node{
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stanza.Node{
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XMLName: xml.Name{Local: "uri"},
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Content: "tel:" + tel,
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},
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},
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})
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}
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if info != "" {
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nodes = append(nodes, stanza.Node{
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XMLName: xml.Name{Local: "note"},
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Nodes: []stanza.Node{
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stanza.Node{
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XMLName: xml.Name{Local: "text"},
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Content: info,
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},
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},
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})
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}
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pubsub := &stanza.PubSubGeneric{
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Items: &stanza.Items{
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Node: NodeVCard4,
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List: []stanza.Item{
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stanza.Item{
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Id: id,
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Any: &stanza.Node{
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XMLName: xml.Name{Local: "vcard"},
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Attrs: []xml.Attr{
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xml.Attr{
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Name: xml.Name{Local: "xmlns"},
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Value: "urn:ietf:params:xml:ns:vcard-4.0",
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},
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},
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Nodes: nodes,
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},
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},
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},
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},
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}
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return pubsub
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}
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return nil
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}
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