package client // this file contains the basic set of event handlers // to manage tracking an irc connection etc. import ( "strings" "time" ) // sets up the internal event handlers to do essential IRC protocol things var intHandlers = map[string]HandlerFunc{ REGISTER: (*Conn).h_REGISTER, "001": (*Conn).h_001, "433": (*Conn).h_433, CTCP: (*Conn).h_CTCP, NICK: (*Conn).h_NICK, PING: (*Conn).h_PING, } func (conn *Conn) addIntHandlers() { for n, h := range intHandlers { // internal handlers are essential for the IRC client // to function, so we don't save their Removers here conn.handle(n, h) } } // Basic ping/pong handler func (conn *Conn) h_PING(line *Line) { conn.Pong(line.Args[0]) } // Handler for initial registration with server once tcp connection is made. func (conn *Conn) h_REGISTER(line *Line) { if conn.cfg.Pass != "" { conn.Pass(conn.cfg.Pass) } conn.Nick(conn.cfg.Me.Nick) conn.User(conn.cfg.Me.Ident, conn.cfg.Me.Name) } // Handler to trigger a CONNECTED event on receipt of numeric 001 func (conn *Conn) h_001(line *Line) { // we're connected! conn.dispatch(&Line{Cmd: CONNECTED, Time: time.Now()}) // and we're being given our hostname (from the server's perspective) t := line.Args[len(line.Args)-1] if idx := strings.LastIndex(t, " "); idx != -1 { t = t[idx+1:] if idx = strings.Index(t, "@"); idx != -1 { if conn.st != nil { me := conn.Me() conn.st.NickInfo(me.Nick, me.Ident, t[idx+1:], me.Name) } else { conn.cfg.Me.Host = t[idx+1:] } } } } // XXX: do we need 005 protocol support message parsing here? // probably in the future, but I can't quite be arsed yet. /* :irc.pl0rt.org 005 GoTest CMDS=KNOCK,MAP,DCCALLOW,USERIP UHNAMES NAMESX SAFELIST HCN MAXCHANNELS=20 CHANLIMIT=#:20 MAXLIST=b:60,e:60,I:60 NICKLEN=30 CHANNELLEN=32 TOPICLEN=307 KICKLEN=307 AWAYLEN=307 :are supported by this server :irc.pl0rt.org 005 GoTest MAXTARGETS=20 WALLCHOPS WATCH=128 WATCHOPTS=A SILENCE=15 MODES=12 CHANTYPES=# PREFIX=(qaohv)~&@%+ CHANMODES=beI,kfL,lj,psmntirRcOAQKVCuzNSMT NETWORK=bb101.net CASEMAPPING=ascii EXTBAN=~,cqnr ELIST=MNUCT :are supported by this server :irc.pl0rt.org 005 GoTest STATUSMSG=~&@%+ EXCEPTS INVEX :are supported by this server */ // Handler to deal with "433 :Nickname already in use" func (conn *Conn) h_433(line *Line) { // Args[1] is the new nick we were attempting to acquire me := conn.Me() neu := conn.cfg.NewNick(line.Args[1]) conn.Nick(neu) if !line.argslen(1) { return } // if this is happening before we're properly connected (i.e. the nick // we sent in the initial NICK command is in use) we will not receive // a NICK message to confirm our change of nick, so ReNick here... if line.Args[1] == me.Nick { if conn.st != nil { conn.cfg.Me = conn.st.ReNick(me.Nick, neu) } else { conn.cfg.Me.Nick = neu } } } // Handle VERSION requests and CTCP PING func (conn *Conn) h_CTCP(line *Line) { if line.Args[0] == VERSION { conn.CtcpReply(line.Nick, VERSION, conn.cfg.Version) } else if line.Args[0] == PING && line.argslen(2) { conn.CtcpReply(line.Nick, PING, line.Args[2]) } } // Handle updating our own NICK if we're not using the state tracker func (conn *Conn) h_NICK(line *Line) { if conn.st == nil && line.Nick == conn.cfg.Me.Nick { conn.cfg.Me.Nick = line.Args[0] } }