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249 lines
8.2 KiB
Python
249 lines
8.2 KiB
Python
# Twisted/Klein imports
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import util
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# Project imports
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from settings import settings
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from twisted.internet import protocol, reactor, ssl
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from twisted.words.protocols import irc
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from ux.commands import IRCCommands
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class IRCBot(irc.IRCClient):
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def __init__(self, log):
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"""
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Initialise IRC bot.
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:param log: logger instance
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:type log: Logger
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"""
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self.log = log
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self.cmd = IRCCommands()
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# Parse the commands into "commandname": "commandclass"
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self.cmdhash = {
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getattr(self.cmd, x).name: x for x in dir(self.cmd) if not x.startswith("_")
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}
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self.nickname = settings.IRC.Nick
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self.password = settings.IRC.Pass
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self.realname = self.nickname
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self.username = self.nickname
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# Don't give away information about our client
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self.userinfo = None
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self.fingerReply = None
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self.versionName = None
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self.sourceURL = None
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self.lineRate = None # Don't throttle messages, we may need to send a lot
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self.prefix = settings.IRC.Prefix
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self.admins = (settings.IRC.Admins).split("\n")
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self.highlight = (settings.IRC.Highlight).split("\n")
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self.channel = settings.IRC.Channel
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def parse(self, user, host, channel, msg):
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"""
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Simple handler for IRC commands.
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:param user: full user string with host
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:param host: user's hostname
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:param channel: channel the message was received on
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:param msg: the message
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:type user: string
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:type host: string
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:type channel: string
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:type msg: string
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"""
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spl = msg.split()
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# nick = user.split("!")[0]
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cmd = spl[0]
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length = len(spl)
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# Check if user is authenticated
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authed = host in self.admins
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if cmd == "help" and length == 2 and authed:
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if spl[1] in self.cmdhash:
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cmdname = self.cmdhash[spl[1]]
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obj = getattr(self.cmd, cmdname)
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helptext = getattr(obj, "helptext")
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self.msg(channel, helptext)
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return
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else:
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self.msg(channel, f"No such command: {spl[1]}")
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return
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if cmd == "helpall" and authed:
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for command in self.cmdhash:
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cmdname = self.cmdhash[command]
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obj = getattr(self.cmd, cmdname)
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helptext = getattr(obj, "helptext")
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self.msg(channel, f"{cmdname}: {helptext}")
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return
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if cmd in self.cmdhash:
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# Get the class name of the referenced command
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cmdname = self.cmdhash[cmd]
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# Get the class name
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obj = getattr(self.cmd, cmdname)
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def msgl(x):
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self.msg(channel, x)
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# Check if the command required authentication
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if obj.authed:
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if host in self.admins:
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obj.run(
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cmd,
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spl,
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length,
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authed,
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msgl,
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self.agora,
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self.tx,
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self.ux,
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)
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else:
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# Handle authentication here instead of in the command module for security
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self.msg(channel, "Access denied.")
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else:
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# Run an unauthenticated command, without passing through secure library calls
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obj.run(cmd, spl, len(spl), authed, msgl)
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return
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self.msg(channel, "Command not found.")
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if authed:
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# Give user command hints if they are authenticated
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self.msg(channel, f"Commands loaded: {', '.join(self.cmdhash.keys())}")
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def signedOn(self):
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"""
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Called when we have signed on to IRC.
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Join our channel.
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"""
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self.log.info(f"Signed on as {self.nickname}")
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self.join(self.channel)
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def joined(self, channel):
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"""
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Called when we have joined a channel.
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Setup the Agora LoopingCall to get trades.
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This is here to ensure the IRC client is initialised enough to send the trades.
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:param channel: channel we joined
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:type channel: string
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"""
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self.sinks.__irc_started__()
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self.sources.__irc_started__()
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self.log.info(f"Joined channel {channel}")
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def privmsg(self, user, channel, msg):
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"""
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Called on received PRIVMSGs.
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Pass through identified commands to the parse function.
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:param user: full user string with host
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:param channel: channel the message was received on
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:param msg: the message
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:type user: string
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:type channel: string
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:type msg: string
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"""
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nick = user.split("!")[0]
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if channel == self.nickname:
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channel = nick
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host = user.split("!")[1]
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host = host.split("@")[1]
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ident = user.split("!")[1]
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ident = ident.split("@")[0]
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self.log.info(f"({channel}) {user}: {msg}")
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if msg[0] == self.prefix:
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if len(msg) > 1:
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if msg.split()[0] != "!":
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self.parse(user, host, channel, msg[1:])
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elif host in self.admins and channel == nick:
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if len(msg) > 0:
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spl = msg.split()
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if len(spl) > 0:
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if spl[0] != "!":
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self.parse(user, host, channel, msg)
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def noticed(self, user, channel, msg):
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"""
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Called on received NOTICEs.
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:param user: full user string with host
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:param channel: channel the notice was received on
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:param msg: the message
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:type user: string
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:type channel: string
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:type msg: string
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"""
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nick = user.split("!")[0]
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if channel == self.nickname:
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channel = nick
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# self.log.info("[%s] %s: %s" % (channel, user, msg))
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class IRCBotFactory(protocol.ClientFactory):
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def __init__(self):
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self.log = util.get_logger("IRC")
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self.log.info("Class initialised")
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def sendmsg(self, msg):
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"""
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Passthrough function to send a message to the channel.
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"""
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if self.client:
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self.client.msg(self.client.channel, msg)
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else:
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self.log.error(f"Trying to send a message without connected client: {msg}")
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return
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def buildProtocol(self, addr):
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"""
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Custom override for the Twisted buildProtocol so we can access the Protocol instance.
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Passes through the Agora instance to IRC.
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:return: IRCBot Protocol instance
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"""
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# Pass through the logger
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prcol = IRCBot(self.log)
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self.client = prcol
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setattr(self.client, "agora", self.agora)
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setattr(self.client, "sinks", self.sinks)
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setattr(self.client, "sources", self.sources)
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setattr(self.client, "tx", self.tx)
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setattr(self.client, "ux", self.ux)
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return prcol
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def clientConnectionLost(self, connector, reason):
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"""
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Called when connection to IRC server lost. Reconnect.
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:param connector: connector object
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:param reason: reason connection lost
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:type connector: object
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:type reason: string
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"""
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self.log.error(f"Lost connection: {reason}, reconnecting")
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connector.connect()
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def clientConnectionFailed(self, connector, reason):
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"""
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Called when connection to IRC server failed. Reconnect.
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:param connector: connector object
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:param reason: reason connection failed
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:type connector: object
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:type reason: string
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"""
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self.log.error(f"Could not connect: {reason}")
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connector.connect()
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def bot():
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"""
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Load the certificates, start the Bot Factory and connect it to the IRC server.
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:return: Factory instance
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:rtype: Factory
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"""
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# Load the certificates
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context = ssl.DefaultOpenSSLContextFactory(settings.IRC.Cert, settings.IRC.Cert)
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# Define the factory instance
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factory = IRCBotFactory()
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reactor.connectSSL(settings.IRC.Host, int(settings.IRC.Port), factory, context)
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return factory
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