/
session.go
450 lines (414 loc) · 12.2 KB
/
session.go
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package main
import (
"bytes"
"encoding/xml"
"errors"
"fmt"
"log"
"strings"
"time"
"github.com/shizeeg/xmpp"
)
// Session represents active XMPP-session
type Session struct {
conn *xmpp.Conn
config *Config
conferences map[string]Conference
pendingSubscribes map[string]string
// timeouts maps from Cookies (from outstanding requests) to the
// absolute time when that request should timeout.
timeouts map[xmpp.Cookie]time.Time
}
// Respond is a wrapper around Say(stanza, msg, true...)
func (s *Session) Respond(stanza interface{}, msg string, private bool) (err error) {
return s.Say(stanza, msg, true, private)
}
// Say sends reply to a request from roster or MUC. You can set private
// (in MUC) or tonick to prefix message with a nick who have sent request
func (s *Session) Say(stanza interface{}, msg string, tonick, private bool) (err error) {
typ := "chat"
var to string
stnza, ok := stanza.(xmpp.Stanza)
if !ok {
msg = "error stanza type!"
}
switch st := stnza.Value.(type) {
case *xmpp.ClientMessage:
typ = st.Type
to = st.From
if !private && typ == "groupchat" {
var nick string
to, nick = SplitJID(st.From)
if tonick {
msg = nick + ": " + msg
}
}
if private {
typ = "chat"
to = st.From
}
default:
fmt.Printf("s.Say: unknown stanza: %#v\nmessage: %q\n", stanza, msg)
}
fmt.Printf("\nOn %#v\nSAY(to=%s, typ=%s, msg=%s)\n", stanza, to, typ, msg)
return s.conn.SendMUC(to, typ, msg)
}
// GetInfoReply returns xmpp.DiscoveryReply with Identity and supported features.
func (s *Session) GetInfoReply() *xmpp.DiscoveryReply {
reply := xmpp.DiscoveryReply{
Node: NODE, // add verification string later
Identities: []xmpp.DiscoveryIdentity{
{
Category: "client",
Type: "pc",
Name: BOTNAME,
},
},
Features: []xmpp.DiscoveryFeature{
{Var: "http://jabber.org/disco#info"},
{Var: "http://jabber.org/protocol/caps"},
{Var: "http://jabber.org/protocol/muc"},
{Var: "jabber:iq:time"},
{Var: "jabber:iq:version"},
{Var: "urn:xmpp:ping"},
{Var: "urn:xmpp:time"},
},
}
if vstr, err := reply.VerificationString(); err == nil {
reply.Node = NODE + "#" + vstr
}
return &reply
}
// readMessages reads stanza from channel and returns it
func (s *Session) readMessages(stanzaChan chan<- xmpp.Stanza) {
defer close(stanzaChan)
for {
stanza, err := s.conn.Next()
if err != nil {
log.SetPrefix("s.readMessages() ")
log.Println(err)
return
}
stanzaChan <- stanza
}
}
// processPresence handle incoming presences
// it also handles MUC (XEP-0045) "onJoin" presences.
func (s *Session) processPresence(stanza *xmpp.MUCPresence) {
// if out, err := xml.Marshal(stanza); err != nil {
// log.SetPrefix("!!!ERROR!!! ")
// log.Printf("PRESENCE: %#v\n", err)
// } else {
// log.SetPrefix("PRESENCE ")
// log.Printf("%#v\n%s\n-- \n", stanza, out)
// }
confJID := xmpp.RemoveResourceFromJid(stanza.From)
switch stanza.Type {
case "unavailable":
if conf, ok := s.conferences[confJID]; ok {
occupant, err := conf.OccupantDel(stanza)
if err != nil {
log.Println(err)
}
s.conferences[confJID] = conf
// We has left conference
if occupant.Nick == conf.Parser.OwnNick {
conf, err := s.ConfDel(stanza)
if err != nil {
fmt.Println(err)
}
fmt.Printf("We're %q has quit %q!\n", occupant.Nick, conf.JID)
}
}
case "": // empty <presence>
if len(stanza.X) <= 0 {
return
}
x := stanza.X[0]
if len(stanza.X) > 1 {
fmt.Printf("SECOND X: %#v\n\n", stanza.X[1])
}
fmt.Printf("%#v", stanza.X)
switch x.XMLName.Space + " " + x.XMLName.Local {
case "http://jabber.org/protocol/muc#user x":
// fromJid := xmpp.RemoveResourceFromJid(stanza.From)
// fromJid = strings.ToLower(fromJid)
// FIXME: need for joined occupant nick catching
fromJid, _ := SplitJID(stanza.From)
for jid, conf := range s.conferences {
if !conf.Joined && conf.JID == fromJid {
conf.Joined = true
s.conferences[jid] = conf
msg := fmt.Sprintf("I have joined to %#v", conf)
fmt.Println(msg) // FIXME: send it to requester
}
}
if conf, ok := s.conferences[fromJid]; ok {
conf.OccupantAdd(stanza)
s.conferences[fromJid] = conf
}
default:
fmt.Println("WTF?: ", stanza)
}
case "subscribe": // http://xmpp.org/rfcs/rfc6121.html#sub-request-gen
jid := xmpp.RemoveResourceFromJid(stanza.From)
if err := s.conn.SendPresence(jid, "subscribed", ""); err != nil {
s.conn.Send(stanza.From, "Subscription error")
}
s.conn.SendPresence(jid, "subscribe", "")
case "subscribed":
s.conn.Send(stanza.From, "Hi!")
case "unsubscribe":
s.conn.Send(stanza.From, "Fuck you, then!")
case "error":
var msg string
conf, err := s.ConfDel(stanza)
if err != nil {
fmt.Println(err)
}
bareJid, nick := SplitJID(stanza.From)
switch stanza.Error.Any.Space + " " + stanza.Error.Any.Local {
case "urn:ietf:params:xml:ns:xmpp-stanzas conflict":
msg = fmt.Sprintf("Can't join %q with nick %q. Error %s: Nickname conflict!",
bareJid, nick, stanza.Error.Code)
case "urn:ietf:params:xml:ns:xmpp-stanzas not-authorized":
msg = fmt.Sprintf("I can't join %q: %#v", conf.JID, stanza.Error)
case "urn:ietf:params:xml:ns:xmpp-stanzas forbidden":
msg = fmt.Sprintf("Can't join %q with nick %q. Error %s: I'm banned in this conference!",
bareJid, nick, stanza.Error.Code)
default:
msg = fmt.Sprintf("We got error presence: type: %q, code %q: %#v",
stanza.Error.Type, stanza.Error.Code, stanza.Error)
}
fmt.Println(msg)
for _, j := range s.config.c.Section("access").Key("owners").Strings("\n") {
if IsValidJID(j) {
s.conn.Send(j, msg)
}
}
default:
log.SetPrefix("WARNING: ")
if out, err := xml.Marshal(stanza); err == nil {
log.Printf("Unknown presence stanza:\n %s\n", out) // FIXME: send it to requester
}
}
}
func (s *Session) awaitVersionReply(ch <-chan xmpp.Stanza, reqFrom xmpp.Stanza) {
stanza, ok := <-ch
reply, ok := stanza.Value.(*xmpp.ClientIQ)
if !ok {
return
}
bareJID, nick := SplitJID(reply.From)
fromUser := reply.From
replyType := "chat"
if len(nick) > 0 {
if conf, ok := s.conferences[bareJID]; ok {
replyType = "groupchat"
if i, ok := conf.NickIndex(nick); ok {
fromUser = conf.Occupants[i].Nick
}
}
}
// fmt.Printf("awaitVersionReply()\nReqFrom: %#v\nReply: %#v\n", reqFrom, reply)
_ = replyType
// if !ok {
// msg := fmt.Sprintf("Version request to %q timed out.", user)
// say(msg, replyType)
// return
// }
// // if !ok {
// msg := fmt.Sprintf("Version request to %q resulted in bad reply type.", user)
// say(msg, replyType)
// return
// }
if reply.Type == "error" {
msg := fmt.Sprintf("%s %s", reply.Error.Code, reply.Error.Any.Local)
if len(reply.Error.Text) > 0 {
msg = fmt.Sprintf("%s %s", reply.Error.Code, reply.Error.Text)
}
s.Respond(reqFrom, msg, false)
return
} else if reply.Type != "result" {
msg := fmt.Sprintf("Version request to %q resulted in response with unknown type: %v", nick, reply.Type)
s.Respond(reqFrom, msg, false)
return
}
buf := bytes.NewBuffer(reply.Query)
var versionReply xmpp.VersionReply
if err := xml.NewDecoder(buf).Decode(&versionReply); err != nil {
msg := fmt.Sprintf("Failed to parse version reply from %q: %v", nick, err)
s.Respond(reqFrom, msg, false)
return
}
var msg string
if len(versionReply.Name) > 0 {
msg += fmt.Sprintf("\nName: %q", versionReply.Name)
}
if len(versionReply.Version) > 0 {
msg += fmt.Sprintf("\nVersion: %q", versionReply.Version)
}
if len(versionReply.OS) > 0 {
msg += fmt.Sprintf("\nOS: %q", versionReply.OS)
}
if len(msg) == 0 {
msg = "no data in reply to iq:version!"
}
msg = fmt.Sprintf("Version reply from %q: %s", fromUser, msg)
fmt.Printf("From: %q\nTo: %q\nMsg: %q", reply.From, reply.To, msg)
s.Respond(reqFrom, msg, false)
}
func (s *Session) awaitTimeReply(ch <-chan xmpp.Stanza, reqFrom xmpp.Stanza) {
stanza, ok := <-ch
reply, ok := stanza.Value.(*xmpp.ClientIQ)
if !ok {
return
}
bareJID, nick := SplitJID(reply.From)
fromUser := reply.From
replyType := "chat"
if len(nick) > 0 {
if conf, ok := s.conferences[bareJID]; ok {
replyType = "groupchat"
if i, ok := conf.NickIndex(nick); ok {
fromUser = conf.Occupants[i].Nick
}
}
}
_ = fromUser
_ = replyType
if reply.Type == "error" {
msg := fmt.Sprintf("%s %s", reply.Error.Code, reply.Error.Any.Local)
if len(reply.Error.Text) > 0 {
msg = fmt.Sprintf("%s %s", reply.Error.Code, reply.Error.Text)
}
s.Respond(reqFrom, msg, false)
return
} else if reply.Type != "result" {
msg := fmt.Sprintf("Version request to %q resulted in response with unknown type: %v", nick, reply.Type)
s.Respond(reqFrom, msg, false)
return
}
buf := bytes.NewBuffer(reply.Query)
var timeReply xmpp.TimeReply
if err := xml.NewDecoder(buf).Decode(&timeReply); err != nil {
msg := fmt.Sprintf("Failed to parse time reply from %q: %v", nick, err)
s.Respond(reqFrom, msg, false)
return
}
msg := fmt.Sprintf("It's %s on %s's clock.", timeReply.String(), fromUser)
s.Respond(reqFrom, msg, false)
}
func (s *Session) processIQ(stanza *xmpp.ClientIQ) interface{} {
buf := bytes.NewBuffer(stanza.Query)
parser := xml.NewDecoder(buf)
token, _ := parser.Token()
if token == nil {
return nil
}
startElem, ok := token.(xml.StartElement)
if !ok {
return nil
}
switch startElem.Name.Space + " " + startElem.Name.Local {
case "urn:xmpp:ping ping":
fmt.Printf("URN:XMPP:PING: %#v", stanza)
return xmpp.EmptyReply{}
case "urn:xmpp:time time":
tzo, utc := GetTimeDate()
fmt.Println("urn:xmpp:time: ", utc, tzo)
return xmpp.TimeReply{TZO: tzo, UTC: utc}
case "http://jabber.org/protocol/disco#items query":
return xmpp.DiscoInfoReply{}
case "http://jabber.org/protocol/disco#info query":
return s.GetInfoReply()
case "jabber:iq:time query":
tz, utc, disp := GetTimeDateOld()
return xmpp.TimeReplyOld{
UTC: utc,
TZ: tz,
Display: disp,
}
case "jabber:iq:version query":
osver, gover := Version()
reply := xmpp.VersionReply{
Name: BOTNAME,
Version: gover,
OS: osver,
}
fmt.Printf("jabber:iq:version %#v\n", reply)
return reply
default:
msg := fmt.Sprintf("Unknown IQ: %s %s\n", startElem.Name.Space, startElem.Name.Local)
fmt.Println(msg)
}
return nil
}
// JoinMUC joins to a conference with nick & optional password
// init & add Conference to the s.conferences map
func (s *Session) JoinMUC(confJID, nick, password string) error {
bareJID := xmpp.RemoveResourceFromJid(confJID)
nick = strings.TrimSpace(nick)
if len(nick) == 0 {
nick = BOTNAME
}
for _, c := range s.conferences {
if c.JID == bareJID {
msg := fmt.Sprintf("I'm already in %q with nick %q", c.JID, c.Parser.OwnNick)
return errors.New(msg)
}
}
if s.conferences == nil {
s.conferences = make(map[string]Conference)
}
// FIXME: fetch settings from database. Separate for each conference.
parser := GluxiParser{
OwnNick: nick,
NickSuffixes: s.config.c.Section("muc").Key("nick_suffixes").String(),
Prefix: s.config.c.Section("muc").Key("prefix").String(),
}
conf := Conference{
JID: bareJID,
Password: password,
Parser: parser,
}
s.conferences[bareJID] = conf
msg := fmt.Sprintf("Conference %q with nick %q added",
conf.JID, parser.OwnNick)
if len(conf.Password) > 0 {
msg += " and password: " + conf.Password
}
fmt.Println(msg)
ver, err := s.GetInfoReply().VerificationString()
if err != nil {
log.Println(err)
}
st := xmpp.MUCPresence{
Lang: s.config.c.Section("account").Key("lang").String(),
To: conf.JID + "/" + parser.OwnNick,
Caps: &xmpp.ClientCaps{
Hash: "sha-1",
Node: NODE,
Ver: ver,
},
X: []*xmpp.X{{
XMLName: xml.Name{Space: "http://jabber.org/protocol/muc", Local: "x"},
Password: conf.Password,
History: &xmpp.History{MaxChars: "0"}}},
}
// fmt.Println("DEBUG: JoinMUC: {")
// PrintXML(st)
// fmt.Println("\n}")
return s.conn.SendStanza(st)
}
// ConfDel deletes conference
func (s *Session) ConfDel(stanza *xmpp.MUCPresence) (deleted Conference, err error) {
bareJID := xmpp.RemoveResourceFromJid(stanza.From)
if conf, ok := s.conferences[bareJID]; ok {
deleted = conf
delete(s.conferences, conf.JID)
log.Printf("Conference %q has been deleted!", conf.JID)
return
}
return Conference{}, errors.New("No such conference! " + bareJID)
}