383 lines
13 KiB
Python
383 lines
13 KiB
Python
"""
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DrBotIRC - customizations of irclib, for dr.botzo
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Copyright (C) 2011 Brian S. Stephan
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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import bisect
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import copy
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from ConfigParser import NoOptionError, NoSectionError
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import re
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import signal
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import socket
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import sys
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from extlib import irclib
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class DrBotServerConnection(irclib.ServerConnection):
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"""Subclass irclib's ServerConnection, in order to expand privmsg."""
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nickmask = None
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def __init__(self, irclibobj):
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irclib.ServerConnection.__init__(self, irclibobj)
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# temporary. hopefully on_welcome() will set this
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self.nickmask = socket.getfqdn()
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self.add_global_handler('welcome', self.on_welcome, 1)
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def on_welcome(self, connection, event):
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"""Set the nickmask that the ircd tells us is us."""
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what = event.arguments()[0]
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match = re.search('(\S+!\S+@\S+)', what)
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if match:
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self.nickmask = match.group(1)
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def privmsg(self, target, text):
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"""Send a PRIVMSG command."""
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splitter = "..."
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# split messages that are too long. Max length is 512.
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# TODO: this does not properly handle when the nickmask has been
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# masked by the ircd
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# is the above still the case?
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space = 512 - len('\r\n') - len(' PRIVMSG ') - len(target) - len(' :') - len(self.nickmask) - len(' :')
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splitspace = space - (len(splitter) + 1)
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if len(text) > space:
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times = 1
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while len(text) > splitspace:
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splitpos = text.rfind(' ', 0, splitspace)
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splittext = text[0:splitpos] + ' ' + splitter
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text = splitter + ' ' + text[splitpos+1:]
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self.send_raw("PRIVMSG %s :%s" % (target, splittext))
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times = times + 1
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if times >= 4:
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return
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# done splitting
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self.send_raw("PRIVMSG %s :%s" % (target, text))
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else:
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self.send_raw("PRIVMSG %s :%s" % (target, text))
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class DrBotIRC(irclib.IRC):
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"""Implement a customized irclib IRC."""
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modlist = []
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config = None
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server = None
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def __init__(self, config):
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irclib.IRC.__init__(self)
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self.config = config
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# handle SIGINT
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signal.signal(signal.SIGINT, self.sigint_handler)
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def server(self):
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"""Create a DrBotServerConnection."""
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self.server = DrBotServerConnection(self)
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self.connections.append(self.server)
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return self.server
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def _handle_event(self, connection, event):
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"""Override event handler to do recursion."""
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self.try_alias_cmds(connection, event)
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self.try_recursion(connection, event)
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self.try_alias(connection, event)
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h = self.handlers
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for handler in h.get("all_events", []) + h.get(event.eventtype(), []):
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if handler[1](connection, event) == "NO MORE":
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return
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def try_to_replace_event_text_with_module_text(self, connection, event):
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"""Do something very similar to _handle_event, but for recursion.
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The intent here is that we replace [text] with whatever a module
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provides to us.
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"""
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h = self.handlers
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replies = []
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event._target = None
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for handler in h.get("all_events", []) + h.get(event.eventtype(), []):
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ret = handler[1](connection, event)
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if ret:
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replies.append(ret)
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if len(replies):
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event.arguments()[0] = '\n'.join(replies)
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def try_alias_cmds(self, connection, event):
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"""See if there is an alias ("!command") in the text, and if so
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do alias manipulation before any other recursion or aliasing.
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"""
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try:
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nick = irclib.nm_to_n(event.source())
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except (IndexError, AttributeError):
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nick = ''
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try:
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userhost = irclib.nm_to_uh(event.source())
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except (IndexError, AttributeError):
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userhost = ''
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replypath = event.target()
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try:
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what = event.arguments()[0]
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except (IndexError, AttributeError):
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what = ''
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admin_unlocked = False
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# privmsg
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if replypath == connection.get_nickname():
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replypath = nick
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try:
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if userhost == self.config.get('dr.botzo', 'admin_userhost'):
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admin_unlocked = True
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except NoOptionError: pass
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# first see if the aliases are being directly manipulated via add/remove
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whats = what.split(' ')
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if len(whats) <= 1:
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return
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try:
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if whats[0] == '!alias' and whats[1] == 'add' and len(whats) >= 4:
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if not self.config.has_section('Alias'):
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self.config.add_section('Alias')
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self.config.set('Alias', whats[2], ' '.join(whats[3:]))
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replystr = 'Added alias ' + whats[2] + '.'
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return self.reply(connection, event, replystr)
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if whats[0] == '!alias' and whats[1] == 'remove' and len(whats) >= 3:
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if not self.config.has_section('Alias'):
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self.config.add_section('Alias')
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if self.config.remove_option('Alias', whats[2]):
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replystr = 'Removed alias ' + whats[2] + '.'
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return self.reply(connection, event, replystr)
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elif whats[0] == '!alias' and whats[1] == 'list':
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try:
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if len(whats) > 2:
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alias = self.config.get('Alias', whats[2])
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return self.reply(connection, event, alias)
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else:
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alist = self.config.options('Alias')
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alist.remove('debug')
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alist.sort()
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liststr = ', '.join(alist)
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return self.reply(connection, event, liststr)
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except NoSectionError: pass
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except NoOptionError: pass
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except NoSectionError: pass
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def try_alias(self, connection, event):
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# try doing alias work
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try:
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what = event.arguments()[0]
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alias_list = self.config.options('Alias')
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for alias in alias_list:
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alias_re = re.compile(alias, re.IGNORECASE)
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if alias_re.search(what) and alias != 'debug':
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# we found an alias for our given string, doing a replace
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command = re.sub(alias, self.config.get('Alias', alias), what, flags=re.IGNORECASE)
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event.arguments()[0] = command
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# now we have to check it for recursions again
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self.try_recursion(connection, event)
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# i guess someone could have an alias of an alias... try again
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return self.try_alias(connection, event)
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except NoOptionError: pass
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except NoSectionError: pass
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except IndexError: pass
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# if we got here, there are no matching aliases, so return what we got
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return event
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def reply(self, connection, event, replystr, stop_responding=False):
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"""Reply over IRC to replypath or return a string with the reply."""
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replypath = event.target()
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if replystr is not None:
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if replypath is None:
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return replystr
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else:
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replies = replystr.split('\n')
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for reply in replies:
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connection.privmsg(replypath, reply)
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if stop_responding:
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return "NO MORE"
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def try_recursion(self, connection, event):
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"""Scan message for subcommands to execute and use as part of this command.
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Upon seeing a line intended for this module, see if there are subcommands
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that we should do what is basically a text replacement on. The intent is to
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allow things like the following:
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command arg1 [anothercommand arg1 arg2]
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where the output of anothercommand is command's arg2..n.
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"""
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try:
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# begin recursion search
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attempt = event.arguments()[0]
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start_idx = attempt.find('[')
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subcmd = attempt[start_idx+1:]
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end_idx = subcmd.rfind(']')
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subcmd = subcmd[:end_idx]
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if start_idx != -1 and end_idx != -1 and len(subcmd) > 0:
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# found recursion candidate
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# copy the event and see if IT has recursion to do
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newevent = copy.deepcopy(event)
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newevent.arguments()[0] = subcmd
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self.try_recursion(connection, newevent)
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# recursion over, check for aliases
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self.try_alias(connection, newevent)
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# now that we have a string that has been de-aliased and
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# recursed all the way deeper into its text, see if any
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# modules can do something with it. this calls the same
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# event handlers in the same way as if this were a native
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# event.
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self.try_to_replace_event_text_with_module_text(connection, newevent)
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# we have done all we can do with the sub-event. whatever
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# the text of that event now is, we should replace the parent
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# event's [] section with it.
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oldtext = event.arguments()[0]
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newtext = oldtext.replace('['+subcmd+']', newevent.arguments()[0])
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event.arguments()[0] = newtext
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# we have now resolved the []. recursion will unfold, replacing
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# it further and further, until we eventually get back to the
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# original irc event in _handle_event, which will do one
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# last search on the text.
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except IndexError: pass
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def quit_irc(self, connection, msg):
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for module in self.modlist:
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module.save()
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module.shutdown()
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connection.quit(msg)
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print(self.save_config())
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sys.exit()
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def save_modules(self):
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for module in self.modlist:
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module.save()
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def save_config(self):
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with open('dr.botzo.cfg', 'w') as cfg:
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self.config.write(cfg)
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return 'Saved config.'
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def load_module(self, modname):
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"""Load a module (in both the python and dr.botzo sense) if not
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already loaded.
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"""
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for module in self.modlist:
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if modname == module.__class__.__name__:
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return 'Module ' + modname + ' is already loaded.'
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# not loaded, let's get to work
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try:
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modstr = 'modules.'+modname
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__import__(modstr)
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module = sys.modules[modstr]
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botmod = eval('module.' + modname + '(self, self.config, self.server)')
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self.modlist.append(botmod)
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botmod.register_handlers()
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# might as well add it to the list
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modset = set(self.config.get('dr.botzo', 'module_list').split(','))
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modset.add(modname)
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self.config.set('dr.botzo', 'module_list', ','.join(modset))
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return 'Module ' + modname + ' loaded.'
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except ImportError:
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return 'Module ' + modname + ' not found.'
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def unload_module(self, modname):
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"""Attempt to unload and del a module if it's loaded."""
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modstr = 'modules.'+modname
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for module in self.modlist:
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if modname == module.__class__.__name__:
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# do anything the module needs to do to clean up
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module.save()
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module.shutdown()
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# remove module references
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self.modlist.remove(module)
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module.unregister_handlers()
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# del it
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del(sys.modules[modstr])
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del(module)
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# might as well remove it from the list
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modset = set(self.config.get('dr.botzo', 'module_list').split(','))
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modset.remove(modname)
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self.config.set('dr.botzo', 'module_list', ','.join(modset))
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return 'Module ' + modname + ' unloaded.'
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# guess it was never loaded
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return 'Module ' + modname + ' is not loaded.'
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def list_modules(self):
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"""List loaded modules."""
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modnames = []
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for module in self.modlist:
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modnames.append(module.__class__.__name__)
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return modnames
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# SIGINT signal handler
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def sigint_handler(self, signal, frame):
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for module in self.modlist:
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module.save()
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module.shutdown()
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print(self.save_config())
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sys.exit()
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# vi:tabstop=4:expandtab:autoindent
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# kate: indent-mode python;indent-width 4;replace-tabs on;
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