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