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Split IRC-specific code from classes.Protocol into a new IRCCommonProtocol (#454)
This commit is contained in:
James Lu
parent
45ae1dd67e
commit
7ca98eb965
135
classes.py
135
classes.py
@ -14,8 +14,6 @@ import ssl
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import hashlib
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from copy import deepcopy
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import inspect
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import re
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from collections import defaultdict
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import ipaddress
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import queue
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@ -1454,33 +1452,7 @@ class Protocol():
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self.protocol_caps = set()
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def validateServerConf(self):
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"""Validates that the server block given contains the required keys."""
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for k in self.conf_keys:
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assert k in self.irc.serverdata, "Missing option %r in server block for network %s." % (k, self.irc.name)
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port = self.irc.serverdata['port']
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assert type(port) == int and 0 < port < 65535, "Invalid port %r for network %s" % (port, self.irc.name)
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@staticmethod
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def parseArgs(args):
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"""
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Parses a string or list of of RFC1459-style arguments, where ":" may
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be used for multi-word arguments that last until the end of a line.
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"""
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if isinstance(args, str):
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args = args.split(' ')
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real_args = []
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for idx, arg in enumerate(args):
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if arg.startswith(':') and idx != 0:
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# ":" is used to begin multi-word arguments that last until the end of the message.
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# Use list splicing here to join them into one argument, and then add it to our list of args.
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joined_arg = ' '.join(args[idx:])[1:] # Cut off the leading : as well
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real_args.append(joined_arg)
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break
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real_args.append(arg)
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return real_args
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return
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def hasCap(self, capab):
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"""
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@ -1564,7 +1536,7 @@ class Protocol():
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_clear()
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_apply()
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def _getSid(self, sname):
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def _get_SID(self, sname):
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"""Returns the SID of a server with the given name, if present."""
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name = sname.lower()
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for k, v in self.irc.servers.items():
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@ -1572,108 +1544,11 @@ class Protocol():
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return k
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else:
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return sname # Fall back to given text instead of None
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_getSid = _get_SID
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def _getUid(self, target):
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def _get_UID(self, target):
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"""Converts a nick argument to its matching UID. This differs from irc.nick_to_uid()
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in that it returns the original text instead of None, if no matching nick is found."""
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target = self.irc.nick_to_uid(target) or target
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return target
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@classmethod
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def parsePrefixedArgs(cls, args):
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"""Similar to parseArgs(), but stripping leading colons from the first argument
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of a line (usually the sender field)."""
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args = cls.parseArgs(args)
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args[0] = args[0].split(':', 1)[1]
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return args
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def _squit(self, numeric, command, args):
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"""Handles incoming SQUITs."""
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split_server = self._getSid(args[0])
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# Normally we'd only need to check for our SID as the SQUIT target, but Nefarious
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# actually uses the uplink server as the SQUIT target.
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# <- ABAAE SQ nefarious.midnight.vpn 0 :test
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if split_server in (self.irc.sid, self.irc.uplink):
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raise ProtocolError('SQUIT received: (reason: %s)' % args[-1])
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affected_users = []
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affected_nicks = defaultdict(list)
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log.debug('(%s) Splitting server %s (reason: %s)', self.irc.name, split_server, args[-1])
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if split_server not in self.irc.servers:
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log.warning("(%s) Tried to split a server (%s) that didn't exist!", self.irc.name, split_server)
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return
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# Prevent RuntimeError: dictionary changed size during iteration
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old_servers = self.irc.servers.copy()
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old_channels = self.irc.channels.copy()
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# Cycle through our list of servers. If any server's uplink is the one that is being SQUIT,
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# remove them and all their users too.
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for sid, data in old_servers.items():
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if data.uplink == split_server:
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log.debug('Server %s also hosts server %s, removing those users too...', split_server, sid)
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# Recursively run SQUIT on any other hubs this server may have been connected to.
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args = self._squit(sid, 'SQUIT', [sid, "0",
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"PyLink: Automatically splitting leaf servers of %s" % sid])
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affected_users += args['users']
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for user in self.irc.servers[split_server].users.copy():
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affected_users.append(user)
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nick = self.irc.users[user].nick
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# Nicks affected is channel specific for SQUIT:. This makes Clientbot's SQUIT relaying
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# much easier to implement.
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for name, cdata in old_channels.items():
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if user in cdata.users:
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affected_nicks[name].append(nick)
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log.debug('Removing client %s (%s)', user, nick)
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self.removeClient(user)
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serverdata = self.irc.servers[split_server]
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sname = serverdata.name
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uplink = serverdata.uplink
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del self.irc.servers[split_server]
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log.debug('(%s) Netsplit affected users: %s', self.irc.name, affected_users)
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return {'target': split_server, 'users': affected_users, 'name': sname,
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'uplink': uplink, 'nicks': affected_nicks, 'serverdata': serverdata,
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'channeldata': old_channels}
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@staticmethod
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def parseCapabilities(args, fallback=''):
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"""
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Parses a string of capabilities in the 005 / RPL_ISUPPORT format.
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"""
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if type(args) == str:
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args = args.split(' ')
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caps = {}
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for cap in args:
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try:
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# Try to split it as a KEY=VALUE pair.
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key, value = cap.split('=', 1)
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except ValueError:
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key = cap
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value = fallback
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caps[key] = value
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return caps
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@staticmethod
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def parsePrefixes(args):
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"""
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Separates prefixes field like "(qaohv)~&@%+" into a dict mapping mode characters to mode
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prefixes.
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"""
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prefixsearch = re.search(r'\(([A-Za-z]+)\)(.*)', args)
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return dict(zip(prefixsearch.group(1), prefixsearch.group(2)))
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def handle_error(self, numeric, command, args):
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"""Handles ERROR messages - these mean that our uplink has disconnected us!"""
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raise ProtocolError('Received an ERROR, disconnecting!')
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_getUid = _get_UID
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@ -10,7 +10,7 @@ FALLBACK_REALNAME = 'PyLink Relay Mirror Client'
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COMMON_PREFIXMODES = [('h', 'halfop'), ('a', 'admin'), ('q', 'owner'), ('y', 'owner')]
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IRCV3_CAPABILITIES = {'multi-prefix', 'sasl'}
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class ClientbotWrapperProtocol(Protocol):
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class ClientbotWrapperProtocol(IRCCommonProtocol):
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def __init__(self, irc):
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super().__init__(irc)
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@ -3,12 +3,143 @@ ircs2s_common.py: Common base protocol class with functions shared by TS6 and P1
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"""
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import time
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import re
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from collections import defaultdict
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from pylinkirc.classes import Protocol
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from pylinkirc.log import log
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from pylinkirc import utils
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class IRCS2SProtocol(Protocol):
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class IRCCommonProtocol(Protocol):
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def validateServerConf(self):
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"""Validates that the server block given contains the required keys."""
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for k in self.conf_keys:
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assert k in self.irc.serverdata, "Missing option %r in server block for network %s." % (k, self.irc.name)
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port = self.irc.serverdata['port']
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assert type(port) == int and 0 < port < 65535, "Invalid port %r for network %s" % (port, self.irc.name)
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@staticmethod
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def parseArgs(args):
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"""
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Parses a string or list of of RFC1459-style arguments, where ":" may
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be used for multi-word arguments that last until the end of a line.
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"""
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if isinstance(args, str):
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args = args.split(' ')
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real_args = []
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for idx, arg in enumerate(args):
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if arg.startswith(':') and idx != 0:
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# ":" is used to begin multi-word arguments that last until the end of the message.
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# Use list splicing here to join them into one argument, and then add it to our list of args.
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joined_arg = ' '.join(args[idx:])[1:] # Cut off the leading : as well
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real_args.append(joined_arg)
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break
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real_args.append(arg)
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return real_args
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@classmethod
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def parsePrefixedArgs(cls, args):
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"""Similar to parseArgs(), but stripping leading colons from the first argument
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of a line (usually the sender field)."""
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args = cls.parseArgs(args)
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args[0] = args[0].split(':', 1)[1]
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return args
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def _squit(self, numeric, command, args):
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"""Handles incoming SQUITs."""
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split_server = self._getSid(args[0])
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# Normally we'd only need to check for our SID as the SQUIT target, but Nefarious
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# actually uses the uplink server as the SQUIT target.
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# <- ABAAE SQ nefarious.midnight.vpn 0 :test
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if split_server in (self.irc.sid, self.irc.uplink):
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raise ProtocolError('SQUIT received: (reason: %s)' % args[-1])
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affected_users = []
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affected_nicks = defaultdict(list)
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log.debug('(%s) Splitting server %s (reason: %s)', self.irc.name, split_server, args[-1])
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if split_server not in self.irc.servers:
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log.warning("(%s) Tried to split a server (%s) that didn't exist!", self.irc.name, split_server)
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return
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# Prevent RuntimeError: dictionary changed size during iteration
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old_servers = self.irc.servers.copy()
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old_channels = self.irc.channels.copy()
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# Cycle through our list of servers. If any server's uplink is the one that is being SQUIT,
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# remove them and all their users too.
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for sid, data in old_servers.items():
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if data.uplink == split_server:
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log.debug('Server %s also hosts server %s, removing those users too...', split_server, sid)
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# Recursively run SQUIT on any other hubs this server may have been connected to.
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args = self._squit(sid, 'SQUIT', [sid, "0",
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"PyLink: Automatically splitting leaf servers of %s" % sid])
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affected_users += args['users']
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for user in self.irc.servers[split_server].users.copy():
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affected_users.append(user)
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nick = self.irc.users[user].nick
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# Nicks affected is channel specific for SQUIT:. This makes Clientbot's SQUIT relaying
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# much easier to implement.
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for name, cdata in old_channels.items():
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if user in cdata.users:
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affected_nicks[name].append(nick)
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log.debug('Removing client %s (%s)', user, nick)
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self.removeClient(user)
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serverdata = self.irc.servers[split_server]
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sname = serverdata.name
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uplink = serverdata.uplink
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del self.irc.servers[split_server]
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log.debug('(%s) Netsplit affected users: %s', self.irc.name, affected_users)
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return {'target': split_server, 'users': affected_users, 'name': sname,
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'uplink': uplink, 'nicks': affected_nicks, 'serverdata': serverdata,
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'channeldata': old_channels}
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@staticmethod
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def parseCapabilities(args, fallback=''):
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"""
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Parses a string of capabilities in the 005 / RPL_ISUPPORT format.
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"""
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if type(args) == str:
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args = args.split(' ')
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caps = {}
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for cap in args:
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try:
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# Try to split it as a KEY=VALUE pair.
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key, value = cap.split('=', 1)
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except ValueError:
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key = cap
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value = fallback
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caps[key] = value
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return caps
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@staticmethod
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def parsePrefixes(args):
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"""
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Separates prefixes field like "(qaohv)~&@%+" into a dict mapping mode characters to mode
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prefixes.
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"""
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prefixsearch = re.search(r'\(([A-Za-z]+)\)(.*)', args)
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return dict(zip(prefixsearch.group(1), prefixsearch.group(2)))
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def handle_error(self, numeric, command, args):
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"""Handles ERROR messages - these mean that our uplink has disconnected us!"""
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raise ProtocolError('Received an ERROR, disconnecting!')
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class IRCS2SProtocol(IRCCommonProtocol):
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COMMAND_TOKENS = {}
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def __init__(self, irc):
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