qwebirc/ircclient.py

   1 import twisted, sys, codecs
   2 from twisted.words.protocols import irc
   3 from twisted.internet import reactor, protocol
   4 from twisted.web import resource, server
   5 from twisted.protocols import basic
   6
   7 import hmac, time, config
   8 from config import HMACTEMPORAL
   9
  10 if config.WEBIRC_MODE == "hmac":
  11   HMACKEY = hmac.HMAC(key=config.HMACKEY)
  12
  13 def hmacfn(*args):
  14   h = HMACKEY.copy()
  15   h.update("%d %s" % (int(time.time() / HMACTEMPORAL), " ".join(args)))
  16   return h.hexdigest()
  17
  18 def utf8_iso8859_1(data, table=dict((x, x.decode("iso-8859-1")) for x in map(chr, range(0, 256)))):
  19   return (table.get(data.object[data.start]), data.start+1)
  20
  21 codecs.register_error("mixed-iso-8859-1", utf8_iso8859_1)
  22
  23 def irc_decode(x):
  24   try:
  25     return x.decode("utf-8", "mixed-iso-8859-1")
  26   except UnicodeDecodeError:
  27     return x.decode("iso-8859-1", "ignore")
  28
  29 class QWebIRCClient(basic.LineReceiver):
  30   delimiter = "\n"
  31   def __init__(self, *args, **kwargs):
  32     self.__nickname = "(unregistered)"
  33
  34   def dataReceived(self, data):
  35     basic.LineReceiver.dataReceived(self, data.replace("\r", ""))
  36
  37   def lineReceived(self, line):
  38     line = irc_decode(irc.lowDequote(line))
  39
  40     try:
  41       prefix, command, params = irc.parsemsg(line)
  42       self.handleCommand(command, prefix, params)
  43     except irc.IRCBadMessage:
  44       self.badMessage(line, *sys.exc_info())
  45
  46     if command == "001":
  47       self.__nickname = params[0]
  48
  49       if self.__perform is not None:
  50         for x in self.__perform:
  51           self.write(x)
  52         self.__perform = None
  53     elif command == "NICK":
  54       nick = prefix.split("!", 1)[0]
  55       if nick == self.__nickname:
  56         self.__nickname = params[0]
  57
  58   def badMessage(self, args):
  59     self("badmessage", args)
  60
  61   def handleCommand(self, command, prefix, params):
  62     self("c", command, prefix, params)
  63
  64   def __call__(self, *args):
  65     self.factory.publisher.event(args)
  66
  67   def write(self, data):
  68     self.transport.write("%s\r\n" % irc.lowQuote(data.encode("utf-8")))
  69
  70   def connectionMade(self):
  71     basic.LineReceiver.connectionMade(self)
  72
  73     self.lastError = None
  74     f = self.factory.ircinit
  75     nick, ident, ip, realname, hostname = f["nick"], f["ident"], f["ip"], f["realname"], f["hostname"]
  76     self.__nickname = nick
  77     self.__perform = f.get("perform")
  78
  79     if config.WEBIRC_MODE == "hmac":
  80       hmac = hmacfn(ident, ip)
  81       self.write("USER %s bleh bleh %s %s :%s" % (ident, ip, hmac, realname))
  82     elif config.WEBIRC_MODE == "cgiirc":
  83       self.write("WEBIRC %s cgiirc %s %s" % (config.WEBIRC_PASSWORD, ip, hostname))
  84       self.write("USER %s bleh %s :%s" % (ident, ip, realname))
  85     else:
  86       if ip == hostname:
  87         dispip = ip
  88       else:
  89         dispip = "%s/%s" % (hostname, ip)
  90
  91       self.write("USER %s bleh bleh :%s -- %s" % (ident, dispip, realname))
  92
  93     self.write("NICK %s" % nick)
  94
  95     self.factory.client = self
  96     self("connect")
  97
  98   def __str__(self):
  99     return "<QWebIRCClient: %s!%s@%s>" % (self.__nickname, self.factory.ircinit["ident"], self.factory.ircinit["ip"])
 100
 101   def connectionLost(self, reason):
 102     if self.lastError:
 103       self.disconnect("Connection to IRC server lost: %s" % self.lastError)
 104     else:
 105       self.disconnect("Connection to IRC server lost.")
 106     self.factory.client = None
 107     basic.LineReceiver.connectionLost(self, reason)
 108
 109   def error(self, message):
 110     self.lastError = message
 111     self.write("QUIT :qwebirc exception: %s" % message)
 112     self.transport.loseConnection()
 113
 114   def disconnect(self, reason):
 115     self("disconnect", reason)
 116     self.factory.publisher.disconnect()
 117
 118 class QWebIRCFactory(protocol.ClientFactory):
 119   protocol = QWebIRCClient
 120   def __init__(self, publisher, **kwargs):
 121     self.client = None
 122     self.publisher = publisher
 123     self.ircinit = kwargs
 124
 125   def write(self, data):
 126     self.client.write(data)
 127
 128   def error(self, reason):
 129     self.client.error(reason)
 130
 131   def clientConnectionFailed(self, connector, reason):
 132     protocol.ClientFactory.clientConnectionFailed(self, connector, reason)
 133     self.publisher.event(["disconnect", "Connection to IRC server failed."])
 134     self.publisher.disconnect()
 135
 136 def createIRC(*args, **kwargs):
 137   f = QWebIRCFactory(*args, **kwargs)
 138   reactor.connectTCP(config.IRCSERVER, config.IRCPORT, f)
 139   return f
 140
 141 if __name__ == "__main__":
 142   e = createIRC(lambda x: 2, nick="slug__moo", ident="mooslug", ip="1.2.3.6", realname="mooooo", hostname="1.2.3.4")
 143   reactor.run()