bot.py

   1 #!/usr/bin/python
   2
   3 # Erebus IRC bot - Author: John Runyon
   4 # "Bot" and "BotConnection" classes (handling a specific "arm")
   5
   6 import socket, sys, time, threading, os, random
   7 from collections import deque
   8
   9 #bots = {'erebus': bot.Bot(nick='Erebus', user='erebus', bind='', server='irc.quakenet.org', port=6667, realname='Erebus')}
  10 class Bot(object):
  11         def __init__(self, parent, nick, user, bind, authname, authpass, server, port, realname):
  12                 self.parent = parent
  13                 self.nick = nick
  14                 self.permnick = nick
  15                 self.user = user
  16                 self.realname = realname
  17
  18                 self.authname = authname
  19                 self.authpass = authpass
  20
  21                 curs = self.parent.db.cursor()
  22                 if curs.execute("SELECT chname FROM chans WHERE bot = %s AND active = 1", (self.nick,)):
  23                         chansres = curs.fetchall()
  24                         curs.close()
  25                         self.chans = [self.parent.newchannel(self, row['chname']) for row in chansres]
  26
  27                 self.conn = BotConnection(self, bind, server, port)
  28
  29                 self.msgqueue = deque()
  30                 self.slowmsgqueue = deque()
  31                 self.makemsgtimer()
  32                 self.msgtimer.start()
  33
  34         def __del__(self):
  35                 curs = self.parent.db.cursor()
  36                 curs.execute("UPDATE bots SET connected = 0 WHERE nick = %s", (self.nick,))
  37                 curs.close()
  38
  39
  40         def log(self, *args, **kwargs):
  41                 self.parent.log(self.nick, *args, **kwargs)
  42
  43         def connect(self):
  44                 if self.conn.connect():
  45                         self.parent.newfd(self, self.conn.socket.fileno())
  46
  47         def getdata(self):
  48                 return self.conn.read()
  49
  50         def _checknick(self): # check if we're using the right nick, try changing
  51                 if self.nick != self.permnick and self.conn.registered():
  52                         self.conn.send("NICK %s" % (self.permnick))
  53
  54         def parse(self, line):
  55                 self.log('I', line)
  56                 pieces = line.split()
  57
  58                 # dispatch dict
  59                 zero = { #things to look for without source
  60                         'NOTICE': self._gotconnected,
  61                         'PING': self._gotping,
  62                         'ERROR': self._goterror,
  63                 }
  64                 one = { #things to look for after source
  65                         '001': self._got001,
  66                         '376': self._gotRegistered,
  67                         '422': self._gotRegistered,
  68                         'PRIVMSG': self._gotprivmsg,
  69                         '353': self._got353, #NAMES
  70                         '354': self._got354, #WHO
  71                         '433': self._got433, #nick in use
  72                         'JOIN': self._gotjoin,
  73                         'PART': self._gotpart,
  74                         'QUIT': self._gotquit,
  75                         'NICK': self._gotnick,
  76                         'MODE': self._gotmode,
  77                 }
  78
  79                 if self.parent.hasnumhook(pieces[1]):
  80                         hooks = self.parent.getnumhook(pieces[1])
  81                         for callback in hooks:
  82                                 try:
  83                                         callback(self, line)
  84                                 except Exception:
  85                                         self.__debug_cbexception("numhook", line)
  86
  87                 if pieces[0] in zero:
  88                         zero[pieces[0]](pieces)
  89                 elif pieces[1] in one:
  90                         one[pieces[1]](pieces)
  91
  92         def _gotconnected(self, pieces):
  93                 if not self.conn.registered():
  94                         self.conn.register()
  95         def _gotping(self, pieces):
  96                 self.conn.send("PONG %s" % (pieces[1]))
  97                 self._checknick()
  98         def _goterror(self, pieces): #TODO handle more gracefully
  99                 curs = self.parent.db.cursor()
 100                 curs.execute("UPDATE bots SET connected = 0")
 101                 curs.close()
 102                 sys.exit(2)
 103                 os._exit(2)
 104         def _got001(self, pieces):
 105                 pass # wait until the end of MOTD instead
 106         def _gotRegistered(self, pieces):
 107                 self.conn.registered(True)
 108
 109                 curs = self.parent.db.cursor()
 110                 curs.execute("UPDATE bots SET connected = 1 WHERE nick = %s", (self.nick,))
 111                 curs.close()
 112
 113                 self.conn.send("MODE %s +x" % (pieces[2]))
 114                 if self.authname is not None and self.authpass is not None:
 115                         self.conn.send("AUTH %s %s" % (self.authname, self.authpass))
 116                 for c in self.chans:
 117                         self.join(c.name)
 118         def _gotprivmsg(self, pieces):
 119                 nick = pieces[0].split('!')[0][1:]
 120                 user = self.parent.user(nick)
 121                 target = pieces[2]
 122                 msg = ' '.join(pieces[3:])[1:]
 123                 self.parsemsg(user, target, msg)
 124         def _got353(self, pieces):
 125                 chan = self.parent.channel(pieces[4])
 126                 names = pieces[5:]
 127                 names[0] = names[0][1:] #remove colon
 128                 for n in names:
 129                         user = self.parent.user(n.lstrip('@+'))
 130                         if n[0] == '@':
 131                                 chan.userjoin(user, 'op')
 132                         elif n[0] == '+':
 133                                 chan.userjoin(user, 'voice')
 134                         else:
 135                                 chan.userjoin(user)
 136                         user.join(chan)
 137         def _got354(self, pieces):
 138                 qt = int(pieces[3])
 139                 if qt < 3:
 140                         nick, auth = pieces[4:6]
 141                         chan = None
 142                 else:
 143                         chan, nick, auth = pieces[4:7]
 144                         chan = self.parent.channel(chan)
 145                 user = self.parent.user(nick)
 146                 user.authed(auth)
 147
 148                 if chan is not None:
 149                         user.join(chan)
 150                         chan.userjoin(user)
 151
 152                 if qt == 2: # triggered by !auth
 153                         if user.isauthed():
 154                                 if user.glevel > 0:
 155                                         self.msg(nick, "You are now known as #%s (access level: %s)" % (auth, user.glevel))
 156                                 else:
 157                                         self.msg(nick, "You are now known as #%s (not staff)" % (auth))
 158                         else:
 159                                 self.msg(nick, "I tried, but you're not authed!")
 160         def _got433(self, pieces):
 161                 if not self.conn.registered(): #we're trying to connect
 162                         newnick = "%s%d" % (self.nick, random.randint(111,999))
 163                         self.conn.send("NICK %s" % (newnick))
 164                         self.nick = newnick
 165         def _gotjoin(self, pieces):
 166                 nick = pieces[0].split('!')[0][1:]
 167                 chan = self.parent.channel(pieces[2])
 168
 169                 if nick == self.nick:
 170                         self.conn.send("WHO %s c%%cant,3" % (chan))
 171                 else:
 172                         user = self.parent.user(nick, justjoined=True)
 173                         chan.userjoin(user)
 174                         user.join(chan)
 175         def _gotpart(self, pieces):
 176                 nick = pieces[0].split('!')[0][1:]
 177                 chan = self.parent.channel(pieces[2])
 178
 179                 if nick != self.nick:
 180                         gone = self.parent.user(nick).part(chan)
 181                         chan.userpart(self.parent.user(nick))
 182                         if gone:
 183                                 self.parent.user(nick).quit()
 184                                 del self.parent.users[nick.lower()]
 185         def _gotquit(self, pieces):
 186                 nick = pieces[0].split('!')[0][1:]
 187                 if nick != self.nick:
 188                         for chan in self.parent.user(nick).chans:
 189                                 chan.userpart(self.parent.user(nick))
 190                         self.parent.user(nick).quit()
 191                         del self.parent.users[nick.lower()]
 192         def _gotnick(self, pieces):
 193                 oldnick = pieces[0].split('!')[0][1:]
 194                 newnick = pieces[2][1:]
 195                 if newnick.lower() != oldnick.lower():
 196                         self.parent.users[newnick.lower()] = self.parent.users[oldnick.lower()]
 197                         del self.parent.users[oldnick.lower()]
 198                 self.parent.users[newnick.lower()].nickchange(newnick)
 199         def _gotmode(self, pieces):
 200                 source = pieces[0].split('!')[0][1:]
 201                 chan = self.parent.channel(pieces[2])
 202                 mode = pieces[3]
 203                 args = pieces[4:]
 204
 205                 adding = True
 206                 for c in mode:
 207                         if c == '+':
 208                                 adding = True
 209                         elif c == '-':
 210                                 adding = False
 211                         elif c == 'o':
 212                                 if adding:
 213                                         chan.userop(self.parent.user(args.pop(0)))
 214                                 else:
 215                                         chan.userdeop(self.parent.user(args.pop(0)))
 216                         elif c == 'v':
 217                                 if adding:
 218                                         chan.uservoice(self.parent.user(args.pop(0)))
 219                                 else:
 220                                         chan.userdevoice(self.parent.user(args.pop(0)))
 221                         else:
 222                                 pass # don't care about other modes
 223
 224         def __debug_cbexception(self, source, *args, **kwargs):
 225                 if int(self.parent.cfg.get('debug', 'cbexc', default=0)) == 1:
 226                         self.conn.send("PRIVMSG %s :%09.3f \ 34\1f!!! CBEXC\1f\ 3 %s" % (self.parent.cfg.get('debug', 'owner'), time.time() % 100000, source))
 227                         __import__('traceback').print_exc()
 228                         self.log('!', "CBEXC %s %r %r" % (source, args, kwargs))
 229 #                       print "%09.3f %s [!] CBEXC %s %r %r" % (time.time() % 100000, self.nick, source, args, kwargs)
 230
 231
 232         def parsemsg(self, user, target, msg):
 233                 chan = None
 234                 if len(msg) == 0:
 235                         return
 236
 237                 triggerused = msg[0] == self.parent.trigger
 238                 if triggerused: msg = msg[1:]
 239                 pieces = msg.split()
 240
 241                 if target == self.nick:
 242                         if msg[0] == "\001": #ctcp
 243                                 msg = msg.strip("\001")
 244                                 if msg == "VERSION":
 245                                         self.msg(user, "\001VERSION Erebus v%d.%d - http://github.com/zonidjan/erebus" % (self.parent.APIVERSION, self.parent.RELEASE))
 246                                 return
 247                         if len(pieces) > 1:
 248                                 chanword = pieces[1]
 249                                 if chanword[0] == '#':
 250                                         chan = self.parent.channel(chanword)
 251                                         if chan is not None: #if chan is still none, there's no bot on "chanword", and chanword is used as a parameter.
 252                                                 pieces.pop(1)
 253
 254                 else: # message was sent to a channel
 255                         chan = self.parent.channel(target)
 256                         try:
 257                                 if msg[0] == '*': # message may be addressed to bot by "*BOTNICK" trigger?
 258                                         if pieces[0][1:].lower() == self.nick.lower():
 259                                                 pieces.pop(0) # command actually starts with next word
 260                                                 msg = ' '.join(pieces) # command actually starts with next word
 261                                 elif not triggerused:
 262                                         if self.parent.haschanhook(target.lower()):
 263                                                 for callback in self.parent.getchanhook(target.lower()):
 264                                                         try:
 265                                                                 cbret = callback(self, user, chan, *pieces)
 266                                                         except NotImplementedError:
 267                                                                 self.msg(user, "Command not implemented.")
 268                                                         except:
 269                                                                 self.msg(user, "Command failed. Code: CBEXC%09.3f" % (time.time() % 100000))
 270                                                                 self.__debug_cbexception("chanhook", user=user, target=target, msg=msg)
 271                                         return # not to bot, don't process!
 272                         except IndexError:
 273                                 return # "message" is empty
 274
 275                 cmd = pieces[0].lower()
 276
 277                 if self.parent.hashook(cmd):
 278                         for callback in self.parent.gethook(cmd):
 279                                 if chan is None and callback.needchan:
 280                                         self.msg(user, "You need to specify a channel for that command.")
 281                                 elif user.glevel >= callback.reqglevel and (not callback.needchan or chan.levelof(user.auth) >= callback.reqclevel):
 282                                         try:
 283                                                 cbret = callback(self, user, chan, target, *pieces[1:])
 284                                         except NotImplementedError:
 285                                                 self.msg(user, "Command not implemented.")
 286                                         except Exception:
 287                                                 self.msg(user, "Command failed. Code: CBEXC%09.3f" % (time.time() % 100000))
 288                                                 self.__debug_cbexception("hook", user=user, target=target, msg=msg)
 289                                         except SystemExit as e:
 290                                                 curs = self.parent.db.cursor()
 291                                                 curs.execute("UPDATE bots SET connected = 0")
 292                                                 curs.close()
 293                                                 raise e
 294
 295         def __debug_nomsg(self, target, msg):
 296                 if int(self.parent.cfg.get('debug', 'nomsg', default=0)) == 1:
 297                         self.conn.send("PRIVMSG %s :%09.3f \ 34\1f!!! NOMSG\1f\ 3 %r, %r" % (self.parent.cfg.get('debug', 'owner'), time.time() % 100000, target, msg))
 298                         self.log('!', "!!! NOMSG")
 299 #                       print "%09.3f %s [!] %s" % (time.time() % 100000, self.nick, "!!! NOMSG")
 300                         __import__('traceback').print_stack()
 301
 302         def msg(self, target, msg):
 303                 cmd = self._formatmsg(target, msg)
 304                 if self.conn.exceeded or self.conn.bytessent+len(cmd) >= self.conn.recvq:
 305                         self.msgqueue.append(cmd)
 306                 else:
 307                         self.conn.send(cmd)
 308                 self.conn.exceeded = True
 309
 310         def slowmsg(self, target, msg):
 311                 cmd = self._formatmsg(target, msg)
 312                 if self.conn.exceeded or self.conn.bytessent+len(cmd) >= self.conn.recvq:
 313                         self.slowmsgqueue.append(cmd)
 314                 else:
 315                         self.conn.send(cmd)
 316                 self.conn.exceeded = True
 317
 318         def fastmsg(self, target, msg):
 319                 self.conn.send(self._formatmsg(target, msg))
 320                 self.conn.exceeded = True
 321
 322         def _formatmsg(self, target, msg):
 323                 if target is None or msg is None:
 324                         return self.__debug_nomsg(target, msg)
 325
 326                 target = str(target)
 327
 328                 if target[0] == '#': command = "PRIVMSG %s :%s" % (target, msg)
 329                 else: command = "NOTICE %s :%s" % (target, msg)
 330
 331                 return command
 332
 333         def _popmsg(self):
 334                 self.makemsgtimer()
 335                 self.conn.bytessent -= self.conn.recvq/3
 336                 if self.conn.bytessent < 0: self.conn.bytessent = 0
 337                 self.conn.exceeded = False
 338
 339                 try:
 340                         cmd = self.msgqueue.popleft()
 341                         if not self.conn.exceeded and self.conn.bytessent+len(cmd) < self.conn.recvq:
 342                                 self.conn.send(cmd)
 343                                 self.conn.exceeded = True
 344                         else: raise IndexError
 345                 except IndexError:
 346                         try:
 347                                 cmd = self.slowmsgqueue.popleft()
 348                                 if not self.conn.exceeded and self.conn.bytessent+len(cmd) < self.conn.recvq:
 349                                         self.conn.send(cmd)
 350                                         self.conn.exceeded = True
 351                         except IndexError:
 352                                 pass
 353                 self.msgtimer.start()
 354
 355         def makemsgtimer(self):
 356                 self.msgtimer = threading.Timer(3, self._popmsg)
 357                 self.msgtimer.daemon = True
 358
 359         def join(self, chan):
 360                 self.conn.send("JOIN %s" % (chan))
 361
 362         def part(self, chan):
 363                 self.conn.send("PART %s" % (chan))
 364
 365         def quit(self, reason="Shutdown"):
 366                 self.conn.send("QUIT :%s" % (reason))
 367
 368         def __str__(self): return self.nick
 369         def __repr__(self): return "<Bot %r>" % (self.nick)
 370
 371 class BotConnection(object):
 372         def __init__(self, parent, bind, server, port):
 373                 self.parent = parent
 374                 self.buffer = ''
 375                 self.socket = None
 376
 377                 self.bind = bind
 378                 self.server = server
 379                 self.port = int(port)
 380
 381                 self.state = 0 # 0=disconnected, 1=registering, 2=connected
 382
 383                 self.bytessent = 0
 384                 self.recvq = 500
 385                 self.exceeded = False
 386
 387         def connect(self):
 388                 self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 389                 self.socket.bind((self.bind, 0))
 390                 self.socket.connect((self.server, self.port))
 391                 return True
 392         def register(self):
 393                 if self.state == 0:
 394                         self.send("NICK %s" % (self.parent.nick))
 395                         self.send("USER %s 0 * :%s" % (self.parent.user, self.parent.realname))
 396                         self.state = 1
 397                 return True
 398
 399         def registered(self, done=False):
 400                 if done: self.state = 2
 401                 return self.state == 2
 402
 403         def send(self, line):
 404                 self.parent.log('O', line)
 405 #               print "%09.3f %s [O] %s" % (time.time() % 100000, self.parent.nick, line)
 406                 self.bytessent += len(line)
 407                 self._write(line)
 408
 409         def _write(self, line):
 410                 self.socket.sendall(line+"\r\n")
 411
 412         def read(self):
 413                 self.buffer += self.socket.recv(8192)
 414                 lines = []
 415
 416                 while "\r\n" in self.buffer:
 417                         pieces = self.buffer.split("\r\n", 1)
 418 #                       self.parent.log('I', pieces[0]) # replaced by statement in Bot.parse()
 419 #                       print "%09.3f %s [I] %s" % (time.time() % 100000, self.parent.nick, pieces[0])
 420                         lines.append(pieces[0])
 421                         self.buffer = pieces[1]
 422
 423                 return lines
 424
 425         def __str__(self): return self.parent.nick
 426         def __repr__(self): return "<BotConnection %r (%r)>" % (self.socket.fileno(), self.parent.nick)