erebus.py

   1 #!/usr/bin/python
   2 # vim: fileencoding=utf-8
   3
   4 # Erebus IRC bot - Author: John Runyon
   5 # main startup code
   6
   7 from __future__ import print_function
   8
   9 import os, sys, select, MySQLdb, MySQLdb.cursors, time, traceback, random, gc
  10 import bot, config, ctlmod
  11
  12 class Erebus(object): #singleton to pass around
  13         APIVERSION = 0
  14         RELEASE = 0
  15
  16         bots = {}
  17         fds = {}
  18         numhandlers = {}
  19         msghandlers = {}
  20         chanhandlers = {}
  21         exceptionhandlers = [] # list of (Exception_class, handler_function) tuples
  22         users = {}
  23         chans = {}
  24
  25         class User(object):
  26                 def __init__(self, nick, auth=None):
  27                         self.nick = nick
  28                         if auth is None:
  29                                 self.auth = None
  30                         else:
  31                                 self.auth = auth.lower()
  32                         self.checklevel()
  33
  34                         self.chans = []
  35
  36                 def msg(self, *args, **kwargs):
  37                         main.randbot().msg(self, *args, **kwargs)
  38                 def slowmsg(self, *args, **kwargs):
  39                         main.randbot().slowmsg(self, *args, **kwargs)
  40                 def fastmsg(self, *args, **kwargs):
  41                         main.randbot().fastmsg(self, *args, **kwargs)
  42
  43                 def isauthed(self):
  44                         return self.auth is not None
  45
  46                 def authed(self, auth):
  47                         if auth == '0': self.auth = None
  48                         else: self.auth = auth.lower()
  49                         self.checklevel()
  50
  51                 def checklevel(self):
  52                         if self.auth is None:
  53                                 self.glevel = -1
  54                         else:
  55                                 c = main.query("SELECT level FROM users WHERE auth = %s", (self.auth,))
  56                                 if c:
  57                                         row = c.fetchone()
  58                                         if row is not None:
  59                                                 self.glevel = row['level']
  60                                         else:
  61                                                 self.glevel = 0
  62                                 else:
  63                                         self.glevel = 0
  64                         return self.glevel
  65
  66                 def setlevel(self, level, savetodb=True):
  67                         if savetodb:
  68                                 if level != 0:
  69                                         c = main.query("REPLACE INTO users (auth, level) VALUES (%s, %s)", (self.auth, level))
  70                                 else:
  71                                         c = main.query("DELETE FROM users WHERE auth = %s", (self.auth,))
  72                                         if c == 0: # no rows affected
  73                                                 c = True # is fine
  74                                 if c:
  75                                         self.glevel = level
  76                                         return True
  77                                 else:
  78                                         return False
  79                         else:
  80                                 self.glevel = level
  81                                 return True
  82
  83                 def join(self, chan):
  84                         if chan not in self.chans: self.chans.append(chan)
  85                 def part(self, chan):
  86                         try:
  87                                 self.chans.remove(chan)
  88                         except: pass
  89                         return len(self.chans) == 0
  90                 def quit(self):
  91                         pass
  92                 def nickchange(self, newnick):
  93                         self.nick = newnick
  94
  95                 def __str__(self): return self.nick
  96                 def __repr__(self): return "<User %r (%d)>" % (self.nick, self.glevel)
  97
  98         class Channel(object):
  99                 def __init__(self, name, bot):
 100                         self.name = name
 101                         self.bot = bot
 102                         self.levels = {}
 103
 104                         self.users = []
 105                         self.voices = []
 106                         self.ops = []
 107
 108                         c = main.query("SELECT user, level FROM chusers WHERE chan = %s", (self.name,))
 109                         if c:
 110                                 row = c.fetchone()
 111                                 while row is not None:
 112                                         self.levels[row['user']] = row['level']
 113                                         row = c.fetchone()
 114
 115
 116                 def msg(self, *args, **kwargs):
 117                         self.bot.msg(self, *args, **kwargs)
 118                 def slowmsg(self, *args, **kwargs):
 119                         self.bot.slowmsg(self, *args, **kwargs)
 120                 def fastmsg(self, *args, **kwargs):
 121                         self.bot.fastmsg(self, *args, **kwargs)
 122
 123                 def levelof(self, auth):
 124                         if auth is None:
 125                                 return 0
 126                         auth = auth.lower()
 127                         if auth in self.levels:
 128                                 return self.levels[auth]
 129                         else:
 130                                 return 0
 131
 132                 def setlevel(self, auth, level, savetodb=True):
 133                         auth = auth.lower()
 134                         if savetodb:
 135                                 c = main.query("REPLACE INTO chusers (chan, user, level) VALUES (%s, %s, %s)", (self.name, auth, level))
 136                                 if c:
 137                                         self.levels[auth] = level
 138                                         return True
 139                                 else:
 140                                         return False
 141                         else:
 142                                 self.levels[auth] = level
 143                                 return True
 144
 145                 def userjoin(self, user, level=None):
 146                         if user not in self.users: self.users.append(user)
 147                         if level == 'op' and user not in self.ops: self.ops.append(user)
 148                         if level == 'voice' and user not in self.voices: self.voices.append(user)
 149                 def userpart(self, user):
 150                         if user in self.ops: self.ops.remove(user)
 151                         if user in self.voices: self.voices.remove(user)
 152                         if user in self.users: self.users.remove(user)
 153
 154                 def userop(self, user):
 155                         if user in self.users and user not in self.ops: self.ops.append(user)
 156                 def uservoice(self, user):
 157                         if user in self.users and user not in self.voices: self.voices.append(user)
 158                 def userdeop(self, user):
 159                         if user in self.ops: self.ops.remove(user)
 160                 def userdevoice(self, user):
 161                         if user in self.voices: self.voices.remove(user)
 162
 163                 def __str__(self): return self.name
 164                 def __repr__(self): return "<Channel %r>" % (self.name)
 165
 166         def __init__(self, cfg):
 167                 self.mustquit = None
 168                 self.starttime = time.time()
 169                 self.cfg = cfg
 170                 self.trigger = cfg.trigger
 171                 if os.name == "posix":
 172                         self.potype = "poll"
 173                         self.po = select.poll()
 174                 else: # f.e. os.name == "nt" (Windows)
 175                         self.potype = "select"
 176                         self.fdlist = []
 177
 178         def query(self, *args, **kwargs):
 179                 if 'noretry' in kwargs:
 180                         noretry = kwargs['noretry']
 181                         del kwargs['noretry']
 182                 else:
 183                         noretry = False
 184
 185                 self.log("[SQL]", "?", "query(%s, %s)" % (', '.join([repr(i) for i in args]), ', '.join([str(key)+"="+repr(kwargs[key]) for key in kwargs])))
 186                 try:
 187                         curs = self.db.cursor()
 188                         res = curs.execute(*args, **kwargs)
 189                         if res:
 190                                 return curs
 191                         else:
 192                                 return res
 193                 except MySQLdb.MySQLError as e:
 194                         self.log("[SQL]", "!", "MySQL error! %r" % (e))
 195                         if not noretry:
 196                                 dbsetup()
 197                                 return self.query(*args, noretry=True, **kwargs)
 198                         else:
 199                                 raise e
 200
 201         def querycb(self, cb, *args, **kwargs):
 202                 def run_query():
 203                         cb(self.query(*args, **kwargs))
 204                 threading.Thread(target=run_query).start()
 205
 206         def newbot(self, nick, user, bind, authname, authpass, server, port, realname):
 207                 if bind is None: bind = ''
 208                 obj = bot.Bot(self, nick, user, bind, authname, authpass, server, port, realname)
 209                 self.bots[nick.lower()] = obj
 210
 211         def newfd(self, obj, fileno):
 212                 self.fds[fileno] = obj
 213                 if self.potype == "poll":
 214                         self.po.register(fileno, select.POLLIN)
 215                 elif self.potype == "select":
 216                         self.fdlist.append(fileno)
 217         def delfd(self, fileno):
 218                 del self.fds[fileno]
 219                 if self.potype == "poll":
 220                         self.po.unregister(fileno)
 221                 elif self.potype == "select":
 222                         self.fdlist.remove(fileno)
 223
 224         def bot(self, name): #get Bot() by name (nick)
 225                 return self.bots[name.lower()]
 226         def fd(self, fileno): #get Bot() by fd/fileno
 227                 return self.fds[fileno]
 228         def randbot(self): #get Bot() randomly
 229                 return self.bots[random.choice(list(self.bots.keys()))]
 230
 231         def user(self, _nick, send_who=False, create=True):
 232                 nick = _nick.lower()
 233
 234                 if send_who and (nick not in self.users or not self.users[nick].isauthed()):
 235                         self.randbot().conn.send("WHO %s n%%ant,1" % (nick))
 236
 237                 if nick in self.users:
 238                         return self.users[nick]
 239                 elif create:
 240                         user = self.User(_nick)
 241                         self.users[nick] = user
 242                         return user
 243                 else:
 244                         return None
 245         def channel(self, name): #get Channel() by name
 246                 if name.lower() in self.chans:
 247                         return self.chans[name.lower()]
 248                 else:
 249                         return None
 250
 251         def newchannel(self, bot, name):
 252                 chan = self.Channel(name.lower(), bot)
 253                 self.chans[name.lower()] = chan
 254                 return chan
 255
 256         def poll(self):
 257                 timeout_seconds = 30
 258                 if self.potype == "poll":
 259                         pollres = self.po.poll(timeout_seconds * 1000)
 260                         return [fd for (fd, ev) in pollres]
 261                 elif self.potype == "select":
 262                         return select.select(self.fdlist, [], [], timeout_seconds)[0]
 263
 264         def connectall(self):
 265                 for bot in self.bots.values():
 266                         if bot.conn.state == 0:
 267                                 bot.connect()
 268
 269         def module(self, name):
 270                 return ctlmod.modules[name]
 271
 272         def log(self, source, level, message):
 273                 print("%09.3f %s [%s] %s" % (time.time() % 100000, source, level, message))
 274
 275         def getuserbyauth(self, auth):
 276                 return [u for u in self.users.values() if u.auth == auth.lower()]
 277
 278         def getdb(self):
 279                 """Get a DB object. The object must be returned to the pool after us, using returndb()."""
 280                 return self.dbs.pop()
 281
 282         def returndb(self, db):
 283                 self.dbs.append(db)
 284
 285         #bind functions
 286         def hook(self, word, handler):
 287                 try:
 288                         self.msghandlers[word].append(handler)
 289                 except:
 290                         self.msghandlers[word] = [handler]
 291         def unhook(self, word, handler):
 292                 if word in self.msghandlers and handler in self.msghandlers[word]:
 293                         self.msghandlers[word].remove(handler)
 294         def hashook(self, word):
 295                 return word in self.msghandlers and len(self.msghandlers[word]) != 0
 296         def gethook(self, word):
 297                 return self.msghandlers[word]
 298
 299         def hooknum(self, word, handler):
 300                 try:
 301                         self.numhandlers[word].append(handler)
 302                 except:
 303                         self.numhandlers[word] = [handler]
 304         def unhooknum(self, word, handler):
 305                 if word in self.numhandlers and handler in self.numhandlers[word]:
 306                         self.numhandlers[word].remove(handler)
 307         def hasnumhook(self, word):
 308                 return word in self.numhandlers and len(self.numhandlers[word]) != 0
 309         def getnumhook(self, word):
 310                 return self.numhandlers[word]
 311
 312         def hookchan(self, chan, handler):
 313                 try:
 314                         self.chanhandlers[chan].append(handler)
 315                 except:
 316                         self.chanhandlers[chan] = [handler]
 317         def unhookchan(self, chan, handler):
 318                 if chan in self.chanhandlers and handler in self.chanhandlers[chan]:
 319                         self.chanhandlers[chan].remove(handler)
 320         def haschanhook(self, chan):
 321                 return chan in self.chanhandlers and len(self.chanhandlers[chan]) != 0
 322         def getchanhook(self, chan):
 323                 return self.chanhandlers[chan]
 324
 325         def hookexception(self, exc, handler):
 326                 self.exceptionhandlers.append((exc, handler))
 327         def unhookexception(self, exc, handler):
 328                 self.exceptionhandlers.remove((exc, handler))
 329         def hasexceptionhook(self, exc):
 330                 return any((True for x,h in self.exceptionhandlers if isinstance(exc, x)))
 331         def getexceptionhook(self, exc):
 332                 return (h for x,h in self.exceptionhandlers if isinstance(exc, x))
 333
 334
 335 def dbsetup():
 336         main.db = None
 337         main.dbs = []
 338         for i in range(cfg.get('erebus', 'num_db_connections', 2)-1):
 339                 main.dbs.append(MySQLdb.connect(host=cfg.dbhost, user=cfg.dbuser, passwd=cfg.dbpass, db=cfg.dbname, cursorclass=MySQLdb.cursors.DictCursor))
 340         main.db = MySQLdb.connect(host=cfg.dbhost, user=cfg.dbuser, passwd=cfg.dbpass, db=cfg.dbname, cursorclass=MySQLdb.cursors.DictCursor)
 341
 342 def setup():
 343         global cfg, main
 344
 345         cfg = config.Config('bot.config')
 346
 347         if cfg.getboolean('debug', 'gc'):
 348                 gc.set_debug(gc.DEBUG_LEAK)
 349
 350         pidfile = open(cfg.pidfile, 'w')
 351         pidfile.write(str(os.getpid()))
 352         pidfile.close()
 353
 354         main = Erebus(cfg)
 355         dbsetup()
 356
 357         autoloads = [mod for mod, yes in cfg.items('autoloads') if int(yes) == 1]
 358         for mod in autoloads:
 359                 ctlmod.load(main, mod)
 360
 361         c = main.query("SELECT nick, user, bind, authname, authpass FROM bots WHERE active = 1")
 362         if c:
 363                 rows = c.fetchall()
 364                 c.close()
 365                 for row in rows:
 366                         main.newbot(row['nick'], row['user'], row['bind'], row['authname'], row['authpass'], cfg.host, cfg.port, cfg.realname)
 367         main.connectall()
 368
 369 def loop():
 370         poready = main.poll()
 371         for fileno in poready:
 372                 try:
 373                         data = main.fd(fileno).getdata()
 374                 except:
 375                         main.log('*', '!', 'Super-mega-emergency: getdata raised exception for socket %d' % (fileno))
 376                         traceback.print_exc()
 377                         data = None
 378                 if data is None:
 379                         main.fd(fileno).close()
 380                 else:
 381                         for line in data:
 382                                 try:
 383                                         main.fd(fileno).parse(line)
 384                                 except:
 385                                         main.log('*', '!', 'Super-mega-emergency: parse raised exception for socket %d data %r' % (fileno, line))
 386                                         traceback.print_exc()
 387         if main.mustquit is not None:
 388                 main.log('*', '!', 'Core exiting due to: %s' % (main.mustquit))
 389                 raise main.mustquit
 390
 391 if __name__ == '__main__':
 392         try: os.rename('logfile', 'oldlogs/%s' % (time.time()))
 393         except: pass
 394         sys.stdout = open('logfile', 'w', 1)
 395         sys.stderr = sys.stdout
 396         setup()
 397         while True: loop()