"""Provide the base IRC client bot which other code can latch onto.""" import bisect import collections import copy import importlib import logging import re import socket import ssl import sys import threading import time from xmlrpc.server import SimpleXMLRPCRequestHandler, SimpleXMLRPCServer import irc.client import irc.modes from irc.bot import Channel from irc.connection import Factory from irc.dict import IRCDict from jaraco.stream import buffer import ircbot.lib as ircbotlib from dr_botzo._version import __version__ from ircbot.models import Alias, IrcChannel, IrcPlugin, IrcServer log = logging.getLogger('ircbot.bot') class PrioritizedRegexHandler(collections.namedtuple('Base', ('priority', 'regex', 'callback'))): """Regex handler that still uses the normal handler priority stuff.""" def __lt__(self, other): """When sorting prioritized handlers, only use the priority.""" return self.priority < other.priority class LenientServerConnection(irc.client.ServerConnection): """ An IRC server connection. ServerConnection objects are instantiated by calling the server method on a Reactor object. """ buffer_class = buffer.LenientDecodingLineBuffer server_config = None def _prep_message(self, string): """Override SimpleIRCClient._prep_message to add some logging.""" log.debug("preparing message %s", string) return super(LenientServerConnection, self)._prep_message(string) class DrReactor(irc.client.Reactor): """Customize the basic IRC library's Reactor with more features.""" # used by Reactor.server() to initialize connection_class = LenientServerConnection def __do_nothing(*args, **kwargs): pass def __init__(self, on_connect=__do_nothing, on_disconnect=__do_nothing): """Initialize our custom stuff.""" super(DrReactor, self).__init__(on_connect=on_connect, on_disconnect=on_disconnect) self.regex_handlers = {} def add_global_regex_handler(self, events, regex, handler, priority=0): """Add a global handler function for a specific event type and regex. Arguments: events --- Event type(s) (a list of strings). handler -- Callback function taking connection and event parameters. priority --- A number (the lower the number, the higher priority). The handler function is called whenever the specified event is triggered in any of the connections and the regex matches. See documentation for the Event class. The handler functions are called in priority order (lowest number is highest priority). If a handler function returns "NO MORE", no more handlers will be called. This is basically an extension of add_global_handler(), either may work, though it turns out most modules probably want this one. """ if type(events) != list: events = [events] handler = PrioritizedRegexHandler(priority, regex, handler) for event in events: with self.mutex: log.debug("in add_global_regex_handler") event_regex_handlers = self.regex_handlers.setdefault(event, []) bisect.insort(event_regex_handlers, handler) def remove_global_regex_handler(self, events, handler): """Remove a global regex handler function. Arguments: events -- Event type(s) (a list of strings). handler -- Callback function. Returns 1 on success, otherwise 0. """ ret = 1 if type(events) != list: events = [events] for event in events: with self.mutex: if event not in self.regex_handlers: ret = 0 for h in self.regex_handlers[event]: if handler == h.callback: self.regex_handlers[event].remove(h) return ret def _handle_event(self, connection, event): """Handle an Event event incoming on ServerConnection connection. Also supports regex handlers. """ try: log.debug("EVENT: e[%s] s[%s] t[%s] a[%s]", event.type, event.source, event.target, event.arguments) # set up some default stuff event.recursing = False event.addressed = False event.original_msg = None event.addressed_msg = None sender_nick = irc.client.NickMask(event.source).nick sent_location = ircbotlib.reply_destination_for_event(event) event.sender_nick = sender_nick event.sent_location = sent_location event.in_privmsg = sender_nick == sent_location self.try_recursion(connection, event) if event.type in ['pubmsg', 'privmsg']: what = event.arguments[0] event.original_msg = what # check if we were addressed or not if connection.server_config.additional_addressed_nicks: all_nicks = '|'.join(connection.server_config.additional_addressed_nicks.split('\n') + [connection.get_nickname()]) else: all_nicks = connection.get_nickname() addressed_pattern = r'^(({nicks})[:,]|@({nicks})[:,]?)\s+(?P.*)'.format(nicks=all_nicks) # ignore the first word, a nick, if the speaker is the bridge try: channel = IrcChannel.objects.get(name=sent_location) if sender_nick == channel.discord_bridge: short_what = ' '.join(what.split(' ')[1:]) real_source = re.sub(r'^<(\S+)> .*', r'\1!user@discord-bridge', what) match = re.match(addressed_pattern, short_what, re.IGNORECASE) event.arguments[0] = short_what event.source = real_source sender_nick = irc.client.NickMask(event.source).nick event.sender_nick = sender_nick event.in_privmsg = sender_nick == sent_location else: match = re.match(addressed_pattern, what, re.IGNORECASE) except IrcChannel.DoesNotExist: match = re.match(addressed_pattern, what, re.IGNORECASE) if match: event.addressed = True event.addressed_msg = match.group('addressed_msg') log.debug("all_nicks: %s, addressed: %s", all_nicks, event.addressed) # only do aliasing for pubmsg/privmsg log.debug("checking for alias for %s", event.arguments[0]) for alias in Alias.objects.all(): repl = alias.replace(event.arguments[0]) if repl: # we found an alias for our given string, doing a replace event.arguments[0] = repl # recurse, in case there's another alias in this one return self._handle_event(connection, event) with self.mutex: # doing regex version first as it has the potential to be more specific log.debug("checking regex handlers for %s", event.type) matching_handlers = sorted( self.regex_handlers.get("all_events", []) + self.regex_handlers.get(event.type, []) ) log.debug("got %d", len(matching_handlers)) for handler in matching_handlers: log.debug("checking %s vs. %s", handler, event.arguments) for line in event.arguments: match = re.search(handler.regex, line) if match: log.debug("match!") result = handler.callback(connection, event, match) if result == "NO MORE": return matching_handlers = sorted( self.handlers.get("all_events", []) + self.handlers.get(event.type, []) ) for handler in matching_handlers: log.debug("not-match") result = handler.callback(connection, event) if result == "NO MORE": return except Exception as ex: log.exception("caught exception!") connection.privmsg(event.target, str(ex)) def try_recursion(self, connection, event): """Scan message for subcommands to execute and use as part of this command. Upon seeing a line intended for this module, see if there are subcommands that we should do what is basically a text replacement on. The intent is to allow things like the following: command arg1 [anothercommand arg1 arg2] where the output of anothercommand is command's arg2..n. Args: connection source connection event incoming event """ log.debug("RECURSING EVENT: e[%s] s[%s] t[%s] a[%s]", event.type, event.source, event.target, event.arguments) try: # begin recursion search attempt = event.arguments[0] log.debug("checking it against %s", attempt) start_idx = attempt.find('[') subcmd = attempt[start_idx + 1:] end_idx = subcmd.rfind(']') subcmd = subcmd[:end_idx] if start_idx != -1 and end_idx != -1 and len(subcmd) > 0: log.debug("subcmd: %s", subcmd) # found recursion candidate # copy the event and see if IT has recursion to do newevent = copy.deepcopy(event) newevent.arguments[0] = subcmd newevent.recursing = True log.debug("new event copied") self.try_recursion(connection, newevent) # now that we have a string that has been # recursed all the way deeper into its text, see if any # modules can do something with it. this calls the same # event handlers in the same way as if this were a native # event. replacements = self.try_to_replace_event_text_with_module_text(connection, newevent) if replacements: # we have done all we can do with the sub-event. whatever # the text of that event now is, we should replace the parent # event's [] section with it. oldtext = event.arguments[0] newtext = oldtext.replace('[' + subcmd + ']', newevent.arguments[0]) log.debug("oldtext: '%s' newtext: '%s'", oldtext, newtext) event.arguments[0] = newtext # we have now resolved the []. recursion will unfold, replacing # it further and further, until we eventually get back to the # original irc event in _handle_event, which will do one # last search on the text. else: log.debug("no more recursion here") except IndexError: log.debug("no more recursion here") def try_to_replace_event_text_with_module_text(self, connection, event): """Do something very similar to _handle_event, but for recursion. The intent here is that we replace [text] with whatever a module provides to us. Args: connection source connection event incoming event """ replacement = False replies = [] # only do aliasing for pubmsg/privmsg if event.type in ['pubmsg', 'privmsg']: what = event.arguments[0] log.debug("checking for (recursion) alias for %s", what) for alias in Alias.objects.all(): repl = alias.replace(what) if repl: # we found an alias for our given string, doing a replace event.arguments[0] = repl with self.mutex: # doing regex version first as it has the potential to be more specific log.debug("checking (recursion) regex handlers for %s", event.type) matching_handlers = sorted( self.regex_handlers.get("all_events", []) + self.regex_handlers.get(event.type, []) ) log.debug("got %d", len(matching_handlers)) for handler in matching_handlers: log.debug("checking (recursion) %s vs. %s", handler, event.arguments) for line in event.arguments: match = re.search(handler.regex, line) if match: log.debug("match (recursion)!") result = handler.callback(connection, event, match) log.debug("result: %s", result) if result: log.debug("appending %s to replies", result) replacement = True replies.append(result) matching_handlers = sorted( self.handlers.get("all_events", []) + self.handlers.get(event.type, []) ) for handler in matching_handlers: log.debug("not-match (recursion)") result = handler.callback(connection, event) log.debug("result: %s", result) if result: log.debug("appending %s to replies", result) replacement = True replies.append(result) if len(replies): event.arguments[0] = '\n'.join(replies) return replacement class IRCBot(irc.client.SimpleIRCClient): """A single-server IRC bot class.""" reactor_class = DrReactor splitter = "..." def __init__(self, server_name, reconnection_interval=60): """Initialize bot.""" super(IRCBot, self).__init__() self.channels = IRCDict() self.plugins = [] self.server_config = IrcServer.objects.get(name=server_name) # the reactor made the connection, save the server reference in it since we pass that around self.connection.server_config = self.server_config # set reconnection interval if not reconnection_interval or reconnection_interval < 0: reconnection_interval = 2 ** 31 self.reconnection_interval = reconnection_interval # set basic stuff self._nickname = self.server_config.nickname self._realname = self.server_config.realname # guess at nickmask. hopefully _on_welcome() will set this, but this should be # a pretty good guess if not nick = self._nickname user = self._nickname host = socket.getfqdn() self.nickmask = "{0:s}!~{1:s}@{2:s}".format(nick, user, host) log.debug("guessing at nickmask '{0:s}'".format(self.nickmask)) # handlers for i in ['disconnect', 'join', 'kick', 'mode', 'namreply', 'nick', 'part', 'quit', 'welcome']: self.connection.add_global_handler(i, getattr(self, '_on_' + i), -20) self.connection.reactor.add_global_regex_handler('pubmsg', r'^!load\s+([\S]+)$', getattr(self, 'handle_load'), -20) self.connection.reactor.add_global_regex_handler('privmsg', r'^!load\s+([\S]+)$', getattr(self, 'handle_load'), -20) self.connection.reactor.add_global_regex_handler('pubmsg', r'^!unload\s+([\S]+)$', getattr(self, 'handle_unload'), -20) self.connection.reactor.add_global_regex_handler('privmsg', r'^!unload\s+([\S]+)$', getattr(self, 'handle_unload'), -20) self.connection.reactor.add_global_regex_handler('pubmsg', r'^!reload\s+([\S]+)$', getattr(self, 'handle_reload'), -20) self.connection.reactor.add_global_regex_handler('privmsg', r'^!reload\s+([\S]+)$', getattr(self, 'handle_reload'), -20) # load XML-RPC server self.xmlrpc = SimpleXMLRPCServer((self.server_config.xmlrpc_host, self.server_config.xmlrpc_port), requestHandler=SimpleXMLRPCRequestHandler, allow_none=True) self.xmlrpc.register_introspection_functions() t = threading.Thread(target=self._xmlrpc_listen, args=()) t.daemon = True t.start() # register XML-RPC stuff self.xmlrpc_register_function(self.privmsg, 'privmsg') self.xmlrpc_register_function(self.reply, 'reply') def _connected_checker(self): if not self.connection.is_connected(): self.reactor.scheduler.execute_after(self.reconnection_interval, self._connected_checker) self.jump_server() def _connect(self): try: # build the connection factory as determined by IPV6/SSL settings if self.server_config.use_ssl: connect_factory = Factory(wrapper=ssl.wrap_socket, ipv6=self.server_config.use_ipv6) else: connect_factory = Factory(ipv6=self.server_config.use_ipv6) self.connect(self.server_config.hostname, self.server_config.port, self._nickname, self.server_config.password, ircname=self._realname, connect_factory=connect_factory) except irc.client.ServerConnectionError: pass def _on_disconnect(self, c, e): self.channels = IRCDict() self.reactor.scheduler.execute_after(self.reconnection_interval, self._connected_checker) def _on_join(self, c, e): ch = e.target nick = e.source.nick if nick == c.get_nickname(): self.channels[ch] = Channel() self.channels[ch].add_user(nick) def _on_kick(self, c, e): nick = e.arguments[0] channel = e.target if nick == c.get_nickname(): del self.channels[channel] else: self.channels[channel].remove_user(nick) def _on_mode(self, c, e): modes = irc.modes.parse_channel_modes(" ".join(e.arguments)) t = e.target if irc.client.is_channel(t): ch = self.channels[t] for mode in modes: if mode[0] == "+": f = ch.set_mode else: f = ch.clear_mode f(mode[1], mode[2]) else: # Mode on self... XXX pass def _on_namreply(self, c, e): """Get the list of names in a channel. e.arguments[0] == "@" for secret channels, "*" for private channels, "=" for others (public channels) e.arguments[1] == channel e.arguments[2] == nick list """ ch_type, channel, nick_list = e.arguments if channel == '*': # User is not in any visible channel # http://tools.ietf.org/html/rfc2812#section-3.2.5 return for nick in nick_list.split(): nick_modes = [] if nick[0] in self.connection.features.prefix: nick_modes.append(self.connection.features.prefix[nick[0]]) nick = nick[1:] for mode in nick_modes: self.channels[channel].set_mode(mode, nick) self.channels[channel].add_user(nick) def _on_nick(self, c, e): before = e.source.nick after = e.target for ch in list(self.channels.values()): if ch.has_user(before): ch.change_nick(before, after) def _on_part(self, c, e): nick = e.source.nick channel = e.target if nick == c.get_nickname(): del self.channels[channel] else: self.channels[channel].remove_user(nick) def _on_quit(self, c, e): nick = e.source.nick for ch in list(self.channels.values()): if ch.has_user(nick): ch.remove_user(nick) def _on_welcome(self, connection, event): """Initialize/run a bunch of on-connection stuff. Set the nickmask that the ircd tells us is us, autojoin channels, etc. Args: connection source connection event incoming event """ what = event.arguments[0] log.debug("welcome: %s", what) # run automsg commands if self.server_config.post_connect: for cmd in self.server_config.post_connect.split('\n'): # TODO NOTE: if the bot is sending something that changes the vhost # (like 'hostserv on') we don't pick it up self.connection.privmsg(cmd.split(' ')[0], ' '.join(cmd.split(' ')[1:])) # sleep before doing autojoins time.sleep(self.server_config.delay_before_joins) for chan in IrcChannel.objects.filter(autojoin=True, server=connection.server_config): log.info("autojoining %s", chan.name) self.connection.join(chan.name) for plugin in IrcPlugin.objects.filter(autoload=True): log.info("autoloading %s", plugin.path) self._load_plugin(connection, event, plugin.path, feedback=False) match = re.search(r'(\S+!\S+@\S+)', what) if match: self.nickmask = match.group(1) log.debug("setting nickmask: %s", self.nickmask) def die(self, msg="Bye, cruel world!"): """Let the bot die. Arguments: msg -- Quit message. """ self._xmlrpc_shutdown() self.connection.disconnect(msg) sys.exit(0) def disconnect(self, msg="I'll be back!"): """Disconnect the bot. The bot will try to reconnect after a while. Arguments: msg -- Quit message. """ self.connection.disconnect(msg) def get_version(self): """Return the bot version. Used when answering a CTCP VERSION request. """ return f"dr.botzo {__version__}" def jump_server(self, msg="Changing servers"): """Connect to a new server, potentially disconnecting from the current one.""" if self.connection.is_connected(): self.connection.disconnect(msg) self._connect() def on_ctcp(self, c, e): """Handle for ctcp events. Replies to VERSION and PING requests and relays DCC requests to the on_dccchat method. """ nick = e.source.nick if e.arguments[0] == "VERSION": c.ctcp_reply(nick, "VERSION " + self.get_version()) elif e.arguments[0] == "PING": if len(e.arguments) > 1: c.ctcp_reply(nick, "PING " + e.arguments[1]) elif e.arguments[0] == "DCC" and e.arguments[1].split(" ", 1)[0] == "CHAT": self.on_dccchat(c, e) def on_dccchat(self, c, e): """Do nothing.""" pass def handle_load(self, connection, event, match): """Handle IRC requests to load a plugin. This loads a plugin, as requested, and the interpreter takes care of loading dependencies. :param connection: connection for this load request :type connection: LenientServerConnection :param event: associated irc event object :type event: Event :param match: the matched regex (via add_global_regex_handler) :type match: Match """ has_perm = ircbotlib.has_permission(event.source, 'ircbot.manage_loaded_plugins') log.debug("has permission to load?: %s", str(has_perm)) if has_perm: plugin_path = match.group(1) log.debug("calling _load_plugin on %s", plugin_path) self._load_plugin(connection, event, plugin_path) def _load_plugin(self, connection, event, plugin_path, feedback=True): """Load an IRC plugin. A plugin's init must initialize its hooks and handlers as references to this bot, this is handed off but otherwise nothing is done with that here, this just loads it from a Python sense. :param connection: connection for this load request :type connection: LenientServerConnection :param event: associated irc event object :type event: Event :param plugin_path: path (likely a relative one) of the plugin to attempt to load :type plugin_path: str :param feedback: whether or not to send messages to IRC regarding the load attempt :type feedback: bool """ log.debug("trying to load plugin %s", plugin_path) dest = None if feedback: dest = ircbotlib.reply_destination_for_event(event) # loop over the sys.modules entries, for debugging log.debug("loaded modules:") for module_name, module in sys.modules.items(): log.debug(" %s", module_name) for path, plugin in self.plugins: log.debug("looping already loaded plugin: %s %s", plugin, path) if plugin_path == path: if feedback: self.privmsg(dest, "Plugin '{0:s}' is already loaded.".format(plugin_path)) return # not loaded, let's get to work try: __import__(plugin_path) module = sys.modules[plugin_path] plugin = module.plugin(self, connection, event) plugin.start() self.plugins.append((plugin_path, plugin)) # give it a model plugin_model, c = IrcPlugin.objects.get_or_create(path=plugin_path) if feedback: self.privmsg(dest, "Plugin '{0:s}' loaded.".format(plugin_path)) except ImportError as e: log.error("Error loading '{0:s}'".format(plugin_path)) log.exception(e) # i don't think this would get populated if __import__ failed del sys.modules[plugin_path] if feedback: self.privmsg(dest, "Plugin '{0:s}' could not be loaded: {1:s}".format(plugin_path, str(e))) except AttributeError as e: log.error("Error loading '{0:s}'".format(plugin_path)) log.exception(e) del sys.modules[plugin_path] if feedback: self.privmsg(dest, "Plugin '{0:s}' could not be loaded: {1:s}".format(plugin_path, str(e))) # loop over the sys.modules entries, for debugging log.debug("new list of loaded modules:") for module_name, module in sys.modules.items(): log.debug(" %s", module_name) def handle_reload(self, connection, event, match): """Handle IRC requests to reload a plugin (module or package). This allows code for a plugin (and potentially also its sibling modules in the package) to be reloaded on demand, in the event that changes were made. :param connection: connection for this reload request :type connection: LenientServerConnection :param event: associated irc event object :type event: Event :param match: the matched regex (via add_global_regex_handler) :type match: Match """ has_perm = ircbotlib.has_permission(event.source, 'ircbot.manage_loaded_plugins') log.debug("has permission to reload?: %s", str(has_perm)) if has_perm: plugin_path = match.group(1) log.debug("calling _reload_plugin on %s", plugin_path) self._reload_plugin(connection, event, plugin_path) def _reload_plugin(self, connection, event, plugin_path, feedback=True): """Execute the built-in reload() on a plugin (module) or it and its siblings (package). :param connection: connection for this load request :type connection: LenientServerConnection :param event: associated irc event object :type event: Event :param plugin_path: path (likely a relative one) of the plugin to attempt to reload :type plugin_path: str :param feedback: whether or not to send messages to IRC regarding the reload attempt :type feedback: bool """ log.debug("trying to unload plugin %s", plugin_path) dest = ircbotlib.reply_destination_for_event(event) # loop over the sys.modules entries, for debugging log.debug("loaded modules:") for module_name, module in sys.modules.items(): log.debug(" %s", module_name) # make sure what was provided was a legitimate plugin # (so that we don't go reloading totally arbitrary code) search_path = None for path, plugin in self.plugins: # first check exact path if path == plugin_path: log.debug("requested %s is %s, so we will try to reload %s", plugin_path, path, plugin_path) search_path = plugin_path if plugin_path[-1] == '.' and path.startswith(plugin_path): log.debug("requested %s is substring of %s, so we will try to reload all %s items", plugin_path, path, plugin_path) search_path = plugin_path[:-1] # we need to know the plugin names to do some extra logic with reload plugin_names = [x[0] for x in self.plugins] # do reload(s) if search_path: plugins_to_reload = [] for module_name, module in sys.modules.items(): if module_name.startswith(search_path): if module_name in plugin_names: # we need to take the plugin reload path for this, but not # before all other code is reloaded, so we save this for the end # if we did this here, the ircplugin might still reference the old # version of its dependencies plugins_to_reload.append(module_name) else: log.debug("reloading %s", module_name) importlib.reload(module) if feedback: self.privmsg(dest, "'{0:s}' reloaded.".format(module_name)) # the references to event handlers will be stale (reload() doesn't go that deep) # so we need to tear down and reinitialize plugins for plugin_to_reload in plugins_to_reload: log.debug("unloading plugin %s", plugin_to_reload) self._unload_plugin(event, plugin_to_reload, False) log.debug("loading plugin %s", plugin_to_reload) self._load_plugin(connection, event, plugin_to_reload, False) def handle_unload(self, connection, event, match): """Handle IRC requests to unload a plugin. Unloading includes disconnecting the IRC plugin hooks, so this is the way to "remove" a plugin from the IRC bot. Note that this only removes the module for the specified plugin, not its dependencies, so if you're trying to unload in order to refresh modules, this won't do what you want. :param connection: connection for this unload request :type connection: LenientServerConnection :param event: associated irc event object :type event: Event :param match: the matched regex (via add_global_regex_handler) :type match: Match """ has_perm = ircbotlib.has_permission(event.source, 'ircbot.manage_loaded_plugins') log.debug("has permission to unload?: %s", str(has_perm)) if has_perm: plugin_path = match.group(1) log.debug("calling _unload_plugin on %s", plugin_path) self._unload_plugin(event, plugin_path) def _unload_plugin(self, event, plugin_path, feedback=True): """Attempt to unload and del a module if it's loaded. This stops the plugin, which should (if it's coded properly) disconnect its event handlers and kill threads and whatnot. :param event: associated irc event object :type event: Event :param plugin_path: path (likely a relative one) of the plugin to attempt to unload :type plugin_path: str :param feedback: whether or not to send messages to IRC regarding the unload attempt :type feedback: bool """ log.debug("trying to unload plugin %s", plugin_path) dest = ircbotlib.reply_destination_for_event(event) # loop over the sys.modules entries, for debugging log.debug("loaded modules:") for module_name, module in sys.modules.items(): log.debug(" %s", module_name) unloaded = False for path, plugin in self.plugins: if plugin_path == path: unloaded = True self.plugins.remove((path, plugin)) plugin.stop() del plugin del sys.modules[plugin_path] if feedback: self.privmsg(dest, "Plugin '{0:s}' unloaded.".format(plugin_path)) if not unloaded and feedback: self.privmsg(dest, "Plugin '{0:s}' is not loaded.".format(plugin_path)) # loop over the sys.modules entries, for debugging log.debug("new list of loaded modules:") for module_name, module in sys.modules.items(): log.debug(" %s", module_name) def privmsg(self, target, text): """Send a PRIVMSG command. Args: target the destination nick/channel text the message to send """ if not target: return log.debug("OUTGOING PRIVMSG: t[%s] m[%s]", target, text) self.connection.send_raw("PRIVMSG {0:s} :{1:s}".format(target, text)) def reply(self, event, replystr, stop=False, explicit_target=None): """Reply over IRC to replypath or return a string with the reply. The primary utility for this is to properly handle recursion. The recursion code will set up a couple hints that this method picks up on and will appropriately send an IRC event or return a string. Unless you know what you are doing, the modules you write should use this method rather than send a privmsg reply, as failing to call this method will certainly have recursion do odd things with your module. Args: event incoming event replystr the message to reply with stop whether or not to let other handlers see this explicit_target if event is none, use this for the destination Returns: The replystr if the event is inside recursion, or, potentially, "NO MORE" to stop other event handlers from acting. """ if event: log.debug("in reply for e[%s] r[%s]", event, replystr) replypath = ircbotlib.reply_destination_for_event(event) recursing = getattr(event, 'recursing', False) log.debug("determined recursing to be %s", recursing) elif explicit_target: log.debug("in reply for e[NO EVENT] r[%s]", replystr) replypath = explicit_target recursing = False else: log.warning("reply() called with no event and no explicit target, aborting") return # convert characters that don't make sense for Discord (like ^C^B) if self.connection.server_config.replace_irc_control_with_markdown: log.debug("old replystr: %s", replystr) replystr = replystr.replace('\x02', '**') replystr = replystr.replace('\x0F', '') replystr = re.sub('\x03..', '', replystr) log.debug("new replystr: %s", replystr) log.debug("replypath: %s", replypath) if replystr is not None: if recursing: return replystr else: # try doing outbound recursion log.debug("old replystr: %s", replystr) if event: fake_event = copy.deepcopy(event) fake_event.arguments[0] = copy.deepcopy(replystr).replace('{', '[').replace('}', ']') else: fake_event = irc.client.Event(type='pubmsg', source='fake', target='fake') fake_event.arguments.append(copy.deepcopy(replystr).replace('{', '[').replace('}', ']')) log.debug("hacked replystr: %s", fake_event.arguments[0]) self.connection.reactor.try_recursion(self.connection, fake_event) replystr = fake_event.arguments[0] log.debug("final replystr: %s", replystr) lines = 0 replies = replystr.split('\n') for reply in replies: # split messages that are too long. max length is 512, but we also need to # account for display and that'll show our hostname space = 512 - len(':{0:s} PRIVMSG {1:s} :\r\n'.format(self.nickmask, replypath)) splitspace = space - (len(self.splitter) + 1) while len(reply) > space: # do splitting splitpos = reply.rfind(' ', 0, splitspace) splittext = reply[0:splitpos] + ' ' + self.splitter reply = self.splitter + ' ' + reply[splitpos + 1:] self.privmsg(replypath, splittext) # antiflood lines += 1 time.sleep(int(0.5 * lines)) # done splitting, or it was never necessary self.privmsg(replypath, reply) if stop: return "NO MORE" def xmlrpc_register_function(self, func, name): """Add a method to the XML-RPC interface. :param func: the method to register :type func: a method :param name: the name to expose the method as :type name: str """ if func and self.xmlrpc: if hasattr(func, '__call__'): self.xmlrpc.register_function(func, name) def _xmlrpc_listen(self): """Begin listening. Hopefully this was called in a new thread.""" self.xmlrpc.serve_forever() def _xmlrpc_shutdown(self): """Shut down the XML-RPC server.""" if self.xmlrpc is not None: self.xmlrpc.shutdown() self.xmlrpc.server_close() def start(self): """Start the bot.""" self._connect() super(IRCBot, self).start() def sigint_handler(self, signal, frame): """Cleanly shutdown on SIGINT.""" log.debug("shutting down") for path, plugin in self.plugins: log.debug("trying to shut down %s", path) self.plugins.remove((path, plugin)) plugin.stop() del plugin del sys.modules[path] self.die(msg="Shutting down...")