mirror of
https://github.com/jlu5/PyLink.git
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189 lines
7.4 KiB
Python
189 lines
7.4 KiB
Python
"""
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service_support.py - Implements handlers for the PyLink ServiceBot API.
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"""
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from pylinkirc import utils, world, conf
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from pylinkirc.log import log
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def spawn_service(irc, source, command, args):
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"""Handles new service bot introductions."""
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if not irc.connected.is_set():
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return
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# Service name
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name = args['name']
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if name != 'pylink' and not irc.has_cap('can-spawn-clients'):
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log.debug("(%s) Not spawning service %s because the server doesn't support spawning clients",
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irc.name, name)
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return
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# Get the ServiceBot object.
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sbot = world.services[name]
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old_userobj = irc.users.get(sbot.uids.get(irc.name))
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if old_userobj and old_userobj.service:
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# A client already exists, so don't respawn it.
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log.debug('(%s) spawn_service: Not respawning service %r as service client %r already exists.', irc.name, name,
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irc.pseudoclient.nick)
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return
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if name == 'pylink' and irc.pseudoclient:
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# irc.pseudoclient already exists, reuse values from it but
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# spawn a new client. This is used for protocols like Clientbot,
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# so that they can override the main service nick, among other things.
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log.debug('(%s) spawn_service: Using existing nick %r for service %r', irc.name, irc.pseudoclient.nick, name)
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userobj = irc.pseudoclient
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userobj.opertype = "PyLink Service"
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userobj.manipulatable = sbot.manipulatable
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else:
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# No client exists, spawn a new one
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nick = sbot.get_nick(irc)
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ident = sbot.get_ident(irc)
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host = sbot.get_host(irc)
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realname = sbot.get_realname(irc)
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# Spawning service clients with these umodes where supported. servprotect usage is a
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# configuration option.
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preferred_modes = ['oper', 'hideoper', 'hidechans', 'invisible', 'bot']
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modes = []
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if conf.conf['pylink'].get('protect_services'):
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preferred_modes.append('servprotect')
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for mode in preferred_modes:
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mode = irc.umodes.get(mode)
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if mode:
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modes.append((mode, None))
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# Track the service's UIDs on each network.
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log.debug('(%s) spawn_service: Spawning new client %s for service %s', irc.name, nick, name)
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userobj = irc.spawn_client(nick, ident, host, modes=modes, opertype="PyLink Service",
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realname=realname, manipulatable=sbot.manipulatable)
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# Store the service name in the User object for easier access.
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userobj.service = name
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sbot.uids[irc.name] = u = userobj.uid
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# Special case: if this is the main PyLink client being spawned,
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# assign this as irc.pseudoclient.
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if name == 'pylink' and not irc.pseudoclient:
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log.debug('(%s) spawn_service: irc.pseudoclient set to UID %s', irc.name, u)
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irc.pseudoclient = userobj
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# Enumerate & join network defined channels.
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sbot.join(irc, sbot.get_persistent_channels(irc))
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utils.add_hook(spawn_service, 'PYLINK_NEW_SERVICE')
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def handle_disconnect(irc, source, command, args):
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"""Handles network disconnections."""
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for name, sbot in world.services.items():
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try:
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del sbot.uids[irc.name]
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log.debug("coremods.service_support: removing uids[%s] from service bot %s", irc.name, sbot.name)
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except KeyError:
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continue
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utils.add_hook(handle_disconnect, 'PYLINK_DISCONNECT')
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def handle_endburst(irc, source, command, args):
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"""Handles network bursts."""
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if source == irc.uplink:
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log.debug('(%s): spawning service bots now.', irc.name)
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# We just connected. Burst all our registered services.
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for name, sbot in world.services.items():
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spawn_service(irc, source, command, {'name': name})
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utils.add_hook(handle_endburst, 'ENDBURST', priority=500)
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def handle_kill(irc, source, command, args):
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"""Handle KILLs to PyLink service bots, respawning them as needed."""
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target = args['target']
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if irc.pseudoclient and target == irc.pseudoclient.uid:
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irc.pseudoclient = None
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userdata = args.get('userdata')
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sbot = irc.get_service_bot(target)
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servicename = None
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if userdata and hasattr(userdata, 'service'): # Look for the target's service name attribute
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servicename = userdata.service
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elif sbot: # Or their service bot instance
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servicename = sbot.name
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if servicename:
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log.info('(%s) Received kill to service %r (nick: %r) from %s (reason: %r).', irc.name, servicename,
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userdata.nick if userdata else irc.users[target].nick, irc.get_hostmask(source), args.get('text'))
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spawn_service(irc, source, command, {'name': servicename})
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utils.add_hook(handle_kill, 'KILL')
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def handle_join(irc, source, command, args):
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"""Monitors channel joins for dynamic service bot joining."""
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if irc.has_cap('visible-state-only'):
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# No-op on bot-only servers.
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return
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channel = args['channel']
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users = irc.channels[channel].users
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for servicename, sbot in world.services.items():
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if channel in sbot.get_persistent_channels(irc) and \
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sbot.uids.get(irc.name) not in users:
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log.debug('(%s) Dynamically joining service %r to channel %r.', irc.name, servicename, channel)
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sbot.join(irc, channel)
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utils.add_hook(handle_join, 'JOIN')
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utils.add_hook(handle_join, 'PYLINK_SERVICE_JOIN')
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def _services_dynamic_part(irc, channel):
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"""Dynamically removes service bots from empty channels."""
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if irc.has_cap('visible-state-only'):
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# No-op on bot-only servers.
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return
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if irc.serverdata.get('join_empty_channels', conf.conf['pylink'].get('join_empty_channels', False)):
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return
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# If all remaining users in the channel are service bots, make them all part.
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if all(irc.get_service_bot(u) for u in irc.channels[channel].users):
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for u in irc.channels[channel].users.copy():
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sbot = irc.get_service_bot(u)
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if sbot:
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log.debug('(%s) Dynamically parting service %r from channel %r.', irc.name, sbot.name, channel)
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irc.part(u, channel)
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return True
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def handle_part(irc, source, command, args):
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"""Monitors channel joins for dynamic service bot joining."""
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for channel in args['channels']:
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_services_dynamic_part(irc, channel)
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utils.add_hook(handle_part, 'PART')
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def handle_kick(irc, source, command, args):
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"""Handle KICKs to the PyLink service bots, rejoining channels as needed."""
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channel = args['channel']
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# Skip autorejoin routines if the channel is now empty.
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if not _services_dynamic_part(irc, channel):
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kicked = args['target']
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sbot = irc.get_service_bot(kicked)
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if sbot and channel in sbot.get_persistent_channels(irc):
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sbot.join(irc, channel)
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utils.add_hook(handle_kick, 'KICK')
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def handle_commands(irc, source, command, args):
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"""Handle commands sent to the PyLink service bots (PRIVMSG)."""
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target = args['target']
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text = args['text']
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sbot = irc.get_service_bot(target)
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if sbot:
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sbot.call_cmd(irc, source, text)
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utils.add_hook(handle_commands, 'PRIVMSG')
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# Register the main PyLink service. All command definitions MUST go after this!
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# TODO: be more specific in description, and possibly allow plugins to modify this to mention
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# their features?
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mydesc = "\x02PyLink\x02 provides extended network services for IRC."
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utils.register_service('pylink', default_nick="PyLink", desc=mydesc, manipulatable=True)
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