mirror of
https://github.com/jlu5/PyLink.git
synced 2024-11-01 09:19:23 +01:00
459 lines
20 KiB
Python
459 lines
20 KiB
Python
import socket
|
|
import time
|
|
import sys
|
|
import os
|
|
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
|
|
import utils
|
|
from copy import copy
|
|
import traceback
|
|
import re
|
|
from classes import *
|
|
|
|
# Raw commands sent from servers vary from protocol to protocol. Here, we map
|
|
# non-standard names to our hook handlers, so plugins get the information they need.
|
|
hook_map = {'FJOIN': 'JOIN', 'SAVE': 'NICK',
|
|
'RSQUIT': 'SQUIT'}
|
|
|
|
def _sendFromServer(irc, sid, msg):
|
|
irc.send(':%s %s' % (sid, msg))
|
|
|
|
def _sendFromUser(irc, numeric, msg):
|
|
irc.send(':%s %s' % (numeric, msg))
|
|
|
|
def spawnClient(irc, nick, ident, host, modes=[], server=None, *args):
|
|
server = server or irc.sid
|
|
if not utils.isInternalServer(irc, server):
|
|
raise ValueError('Server %r is not a PyLink internal PseudoServer!' % server)
|
|
# We need a separate UID generator instance for every PseudoServer
|
|
# we spawn. Otherwise, things won't wrap around properly.
|
|
if server not in irc.uidgen:
|
|
irc.uidgen[server] = utils.TS6UIDGenerator(server)
|
|
uid = irc.uidgen[server].next_uid()
|
|
ts = int(time.time())
|
|
if modes:
|
|
modes = utils.joinModes(modes)
|
|
else:
|
|
modes = '+'
|
|
if not utils.isNick(nick):
|
|
raise ValueError('Invalid nickname %r.' % nick)
|
|
_sendFromServer(irc, server, "UID {uid} {ts} {nick} {host} {host} {ident} 0.0.0.0 "
|
|
"{ts} {modes} + :PyLink Client".format(ts=ts, host=host,
|
|
nick=nick, ident=ident, uid=uid,
|
|
modes=modes))
|
|
u = irc.users[uid] = IrcUser(nick, ts, uid, ident, host, *args)
|
|
irc.servers[server].users.append(uid)
|
|
return u
|
|
|
|
def joinClient(irc, client, channel):
|
|
channel = channel.lower()
|
|
server = utils.isInternalClient(irc, client)
|
|
if not server:
|
|
raise LookupError('No such PyLink PseudoClient exists.')
|
|
if not utils.isChannel(channel):
|
|
raise ValueError('Invalid channel name %r.' % channel)
|
|
# One channel per line here!
|
|
_sendFromServer(irc, server, "FJOIN {channel} {ts} + :,{uid}".format(
|
|
ts=int(time.time()), uid=client, channel=channel))
|
|
irc.channels[channel].users.add(client)
|
|
|
|
def partClient(irc, client, channel, reason=None):
|
|
channel = channel.lower()
|
|
if not utils.isInternalClient(irc, client):
|
|
raise LookupError('No such PyLink PseudoClient exists.')
|
|
msg = "PART %s" % channel
|
|
if not utils.isChannel(channel):
|
|
raise ValueError('Invalid channel name %r.' % channel)
|
|
if reason:
|
|
msg += " :%s" % reason
|
|
_sendFromUser(irc, client, msg)
|
|
handle_part(irc, client, 'PART', [channel])
|
|
|
|
def removeClient(irc, numeric):
|
|
"""<irc object> <client numeric>
|
|
|
|
Removes a client from our internal databases, regardless
|
|
of whether it's one of our pseudoclients or not."""
|
|
for k, v in copy(irc.channels).items():
|
|
irc.channels[k].users.discard(numeric)
|
|
if not irc.channels[k].users:
|
|
# Clear empty channels
|
|
del irc.channels[k]
|
|
sid = numeric[:3]
|
|
print('Removing client %s from irc.users' % numeric)
|
|
del irc.users[numeric]
|
|
print('Removing client %s from irc.servers[%s]' % (numeric, sid))
|
|
irc.servers[sid].users.remove(numeric)
|
|
|
|
def quitClient(irc, numeric, reason):
|
|
"""<irc object> <client numeric>
|
|
|
|
Quits a PyLink PseudoClient."""
|
|
if utils.isInternalClient(irc, numeric):
|
|
_sendFromUser(irc, numeric, "QUIT :%s" % reason)
|
|
removeClient(irc, numeric)
|
|
else:
|
|
raise LookupError("No such PyLink PseudoClient exists. If you're trying to remove "
|
|
"a user that's not a PyLink PseudoClient from "
|
|
"the internal state, use removeClient() instead.")
|
|
|
|
def kickClient(irc, numeric, channel, target, reason=None):
|
|
"""<irc object> <kicker client numeric>
|
|
|
|
Sends a kick from a PyLink PseudoClient."""
|
|
channel = channel.lower()
|
|
if not utils.isInternalClient(irc, numeric):
|
|
raise LookupError('No such PyLink PseudoClient exists.')
|
|
if not reason:
|
|
reason = 'No reason given'
|
|
_sendFromUser(irc, numeric, 'KICK %s %s :%s' % (channel, target, reason))
|
|
# We can pretend the target left by its own will; all we really care about
|
|
# is that the target gets removed from the channel userlist, and calling
|
|
# handle_part() does that just fine.
|
|
handle_part(irc, target, 'KICK', [channel])
|
|
|
|
def nickClient(irc, numeric, newnick):
|
|
"""<irc object> <client numeric> <new nickname>
|
|
|
|
Changes the nick of a PyLink PseudoClient."""
|
|
if not utils.isInternalClient(irc, numeric):
|
|
raise LookupError('No such PyLink PseudoClient exists.')
|
|
if not utils.isNick(newnick):
|
|
raise ValueError('Invalid nickname %r.' % nick)
|
|
_sendFromUser(irc, numeric, 'NICK %s %s' % (newnick, int(time.time())))
|
|
irc.users[numeric].nick = newnick
|
|
|
|
def connect(irc):
|
|
irc.start_ts = ts = int(time.time())
|
|
irc.uidgen = {}
|
|
host = irc.serverdata["hostname"]
|
|
irc.servers[irc.sid] = IrcServer(None, host, internal=True)
|
|
|
|
f = irc.send
|
|
f('CAPAB START 1202')
|
|
f('CAPAB CAPABILITIES :PROTOCOL=1202')
|
|
f('CAPAB END')
|
|
f('SERVER {host} {Pass} 0 {sid} :PyLink Service'.format(host=host,
|
|
Pass=irc.serverdata["sendpass"], sid=irc.sid))
|
|
f(':%s BURST %s' % (irc.sid, ts))
|
|
irc.pseudoclient = spawnClient(irc, 'PyLink', 'pylink', host, modes=set([("+o", None)]))
|
|
f(':%s ENDBURST' % (irc.sid))
|
|
for chan in irc.serverdata['channels']:
|
|
joinClient(irc, irc.pseudoclient.uid, chan)
|
|
|
|
def handle_ping(irc, source, command, args):
|
|
# <- :70M PING 70M 0AL
|
|
# -> :0AL PONG 0AL 70M
|
|
if utils.isInternalServer(irc, args[1]):
|
|
_sendFromServer(irc, args[1], 'PONG %s %s' % (args[1], source))
|
|
|
|
def handle_privmsg(irc, source, command, args):
|
|
prefix = irc.conf['bot']['prefix']
|
|
if args[0] == irc.pseudoclient.uid:
|
|
cmd_args = args[1].split(' ')
|
|
cmd = cmd_args[0].lower()
|
|
try:
|
|
cmd_args = cmd_args[1:]
|
|
except IndexError:
|
|
cmd_args = []
|
|
try:
|
|
func = utils.bot_commands[cmd]
|
|
except KeyError:
|
|
utils.msg(irc, source, 'Unknown command %r.' % cmd)
|
|
return
|
|
try:
|
|
func(irc, source, cmd_args)
|
|
except Exception as e:
|
|
traceback.print_exc()
|
|
utils.msg(irc, source, 'Uncaught exception in command %r: %s: %s' % (cmd, type(e).__name__, str(e)))
|
|
return
|
|
return {'target': args[0], 'text': args[1]}
|
|
|
|
def handle_kill(irc, source, command, args):
|
|
killed = args[0]
|
|
removeClient(irc, killed)
|
|
if killed == irc.pseudoclient.uid:
|
|
irc.pseudoclient = spawnClient(irc, 'PyLink', 'pylink', irc.serverdata["hostname"])
|
|
for chan in irc.serverdata['channels']:
|
|
joinClient(irc, irc.pseudoclient.uid, chan)
|
|
return {'target': killed, 'reason': args[1]}
|
|
|
|
def handle_kick(irc, source, command, args):
|
|
# :70MAAAAAA KICK #endlessvoid 70MAAAAAA :some reason
|
|
channel = args[0].lower()
|
|
kicked = args[1]
|
|
handle_part(irc, kicked, 'KICK', [channel, args[2]])
|
|
if kicked == irc.pseudoclient.uid:
|
|
joinClient(irc, irc.pseudoclient.uid, channel)
|
|
return {'channel': channel, 'target': kicked, 'reason': args[2]}
|
|
|
|
def handle_part(irc, source, command, args):
|
|
channel = args[0].lower()
|
|
# We should only get PART commands for channels that exist, right??
|
|
irc.channels[channel].users.remove(source)
|
|
if not irc.channels[channel].users:
|
|
del irc.channels[channel]
|
|
try:
|
|
reason = args[1]
|
|
except IndexError:
|
|
reason = ''
|
|
return {'channel': channel, 'reason': reason}
|
|
|
|
def handle_error(irc, numeric, command, args):
|
|
irc.connected = False
|
|
raise ProtocolError('Received an ERROR, killing!')
|
|
|
|
def handle_fjoin(irc, servernumeric, command, args):
|
|
# :70M FJOIN #chat 1423790411 +AFPfjnt 6:5 7:5 9:5 :o,1SRAABIT4 v,1IOAAF53R <...>
|
|
channel = args[0].lower()
|
|
# InspIRCd sends each user's channel data in the form of 'modeprefix(es),UID'
|
|
userlist = args[-1].split()
|
|
namelist = []
|
|
for user in userlist:
|
|
modeprefix, user = user.split(',', 1)
|
|
namelist.append(user)
|
|
for mode in modeprefix:
|
|
# Note that a user can have more than one mode prefix (e.g. they have both +o and +v),
|
|
# so they would be added to both lists.
|
|
'''
|
|
# left to right: m_ojoin, m_operprefix, owner (~/+q), admin (&/+a), and op (!/+o)
|
|
if mode in 'Yyqao':
|
|
irc.channels[channel].ops.append(user)
|
|
if mode == 'h':
|
|
irc.channels[channel].halfops.append(user)
|
|
if mode == 'v':
|
|
irc.channels[channel].voices.append(user)
|
|
'''
|
|
irc.channels[channel].users.add(user)
|
|
return {'channel': channel, 'users': namelist}
|
|
|
|
def handle_uid(irc, numeric, command, args):
|
|
# :70M UID 70MAAAAAB 1429934638 GL 0::1 hidden-7j810p.9mdf.lrek.0000.0000.IP gl 0::1 1429934638 +Wioswx +ACGKNOQXacfgklnoqvx :realname
|
|
uid, ts, nick, realhost, host, ident, ip = args[0:7]
|
|
realname = args[-1]
|
|
irc.users[uid] = IrcUser(nick, ts, uid, ident, host, realname, realhost, ip)
|
|
parsedmodes = utils.parseModes(irc, [args[8], args[9]], usermodes=True)
|
|
print('Applying modes %s for %s' % (parsedmodes, uid))
|
|
irc.users[uid].modes = utils.applyModes(irc.users[uid].modes, parsedmodes)
|
|
irc.servers[numeric].users.append(uid)
|
|
return {'uid': uid, 'ts': ts, 'nick': nick, 'realhost': realhost, 'host': host, 'ident': ident, 'ip': ip}
|
|
|
|
def handle_quit(irc, numeric, command, args):
|
|
# <- :1SRAAGB4T QUIT :Quit: quit message goes here
|
|
removeClient(irc, numeric)
|
|
return {'reason': args[0]}
|
|
|
|
def handle_burst(irc, numeric, command, args):
|
|
# BURST is sent by our uplink when we link.
|
|
# <- :70M BURST 1433044587
|
|
|
|
# This is handled in handle_events, since our uplink
|
|
# only sends its name in the initial authentication phase,
|
|
# not in any following BURST commands.
|
|
pass
|
|
|
|
def handle_server(irc, numeric, command, args):
|
|
# SERVER is sent by our uplink or any other server to introduce others.
|
|
# <- :00A SERVER test.server * 1 00C :testing raw message syntax
|
|
# <- :70M SERVER millennium.overdrive.pw * 1 1ML :a relatively long period of time... (Fremont, California)
|
|
servername = args[0].lower()
|
|
sid = args[3]
|
|
irc.servers[sid] = IrcServer(numeric, servername)
|
|
|
|
def handle_nick(irc, numeric, command, args):
|
|
# <- :70MAAAAAA NICK GL-devel 1434744242
|
|
n = irc.users[numeric].nick = args[0]
|
|
return {'target': n, 'ts': args[1]}
|
|
|
|
def handle_save(irc, numeric, command, args):
|
|
# This is used to handle nick collisions. Here, the client Derp_ already exists,
|
|
# so trying to change nick to it will cause a nick collision. On InspIRCd,
|
|
# this will simply set the collided user's nick to its UID.
|
|
|
|
# <- :70MAAAAAA PRIVMSG 0AL000001 :nickclient PyLink Derp_
|
|
# -> :0AL000001 NICK Derp_ 1433728673
|
|
# <- :70M SAVE 0AL000001 1433728673
|
|
user = args[0]
|
|
irc.users[user].nick = user
|
|
return {'target': user, 'ts': args[1]}
|
|
|
|
'''
|
|
def handle_fmode(irc, numeric, command, args):
|
|
# <- :70MAAAAAA FMODE #chat 1433653462 +hhT 70MAAAAAA 70MAAAAAD
|
|
# Oh god, how are we going to handle this?!
|
|
channel = args[0]
|
|
modestrings = args[3:]
|
|
'''
|
|
|
|
def handle_mode(irc, numeric, command, args):
|
|
# In InspIRCd, MODE is used for setting user modes and
|
|
# FMODE is used for channel modes:
|
|
# <- :70MAAAAAA MODE 70MAAAAAA -i+xc
|
|
target = args[0]
|
|
modestrings = args[1:]
|
|
changedmodes = utils.parseModes(irc, modestrings, usermodes=True)
|
|
irc.users[numeric].modes = utils.applyModes(irc.users[numeric].modes, changedmodes)
|
|
return {'target': target, 'modes': changedmodes}
|
|
|
|
def handle_squit(irc, numeric, command, args):
|
|
# :70M SQUIT 1ML :Server quit by GL!gl@0::1
|
|
split_server = args[0]
|
|
print('Netsplit on server %s' % split_server)
|
|
# Prevent RuntimeError: dictionary changed size during iteration
|
|
old_servers = copy(irc.servers)
|
|
for sid, data in old_servers.items():
|
|
if data.uplink == split_server:
|
|
print('Server %s also hosts server %s, removing those users too...' % (split_server, sid))
|
|
handle_squit(irc, sid, 'SQUIT', [sid, "PyLink: Automatically splitting leaf servers of %s" % sid])
|
|
for user in copy(irc.servers[split_server].users):
|
|
print('Removing client %s (%s)' % (user, irc.users[user].nick))
|
|
removeClient(irc, user)
|
|
del irc.servers[split_server]
|
|
return {'target': split_server}
|
|
|
|
def handle_rsquit(irc, numeric, command, args):
|
|
# <- :1MLAAAAIG RSQUIT :ayy.lmao
|
|
# <- :1MLAAAAIG RSQUIT ayy.lmao :some reason
|
|
# RSQUIT is sent by opers to squit remote servers.
|
|
# Strangely, it takes a server name instead of a SID, and is
|
|
# allowed to be ignored entirely.
|
|
# If we receive a remote SQUIT, split the target server
|
|
# ONLY if the sender is identified with us.
|
|
target = args[0]
|
|
for (sid, server) in irc.servers.items():
|
|
if server.name == target:
|
|
target = sid
|
|
if utils.isInternalServer(irc, target):
|
|
if irc.users[numeric].identified:
|
|
uplink = irc.servers[target].uplink
|
|
reason = 'Requested by %s' % irc.users[numeric].nick
|
|
_sendFromServer(irc, uplink, 'SQUIT %s :%s' % (target, reason))
|
|
return handle_squit(irc, numeric, 'SQUIT', [target, reason])
|
|
else:
|
|
utils.msg(irc, numeric, 'Error: you are not authorized to split servers!', notice=True)
|
|
|
|
def handle_idle(irc, numeric, command, args):
|
|
"""Handle the IDLE command, sent between servers in remote WHOIS queries."""
|
|
# <- :70MAAAAAA IDLE 1MLAAAAIG
|
|
# -> :1MLAAAAIG IDLE 70MAAAAAA 1433036797 319
|
|
sourceuser = numeric
|
|
targetuser = args[0]
|
|
_sendFromUser(irc, targetuser, 'IDLE %s %s 0' % (sourceuser, irc.users[targetuser].ts))
|
|
|
|
def handle_events(irc, data):
|
|
# Each server message looks something like this:
|
|
# :70M FJOIN #chat 1423790411 +AFPfjnt 6:5 7:5 9:5 :v,1SRAAESWE
|
|
# :<sid> <command> <argument1> <argument2> ... :final multi word argument
|
|
args = data.split()
|
|
if not args:
|
|
# No data??
|
|
return
|
|
if args[0] == 'SERVER':
|
|
# SERVER whatever.net abcdefgh 0 10X :something
|
|
servername = args[1].lower()
|
|
numeric = args[4]
|
|
if args[2] != irc.serverdata['recvpass']:
|
|
# Check if recvpass is correct
|
|
raise ProtocolError('Error: recvpass from uplink server %s does not match configuration!' % servername)
|
|
irc.servers[numeric] = IrcServer(None, servername)
|
|
return
|
|
elif args[0] == 'CAPAB':
|
|
# Capability negotiation with our uplink
|
|
if args[1] == 'CHANMODES':
|
|
# CAPAB CHANMODES :admin=&a allowinvite=A autoop=w ban=b banexception=e blockcolor=c c_registered=r exemptchanops=X filter=g flood=f halfop=%h history=H invex=I inviteonly=i joinflood=j key=k kicknorejoin=J limit=l moderated=m nickflood=F noctcp=C noextmsg=n nokick=Q noknock=K nonick=N nonotice=T official-join=!Y op=@o operonly=O opmoderated=U owner=~q permanent=P private=p redirect=L reginvite=R regmoderated=M secret=s sslonly=z stripcolor=S topiclock=t voice=+v
|
|
|
|
# Named modes are essential for a cross-protocol IRC service. We
|
|
# can use InspIRCd as a model here and assign their mode map to our cmodes list.
|
|
for modepair in args[2:]:
|
|
name, char = modepair.split('=')
|
|
# We don't really care about mode prefixes; just the mode char
|
|
irc.cmodes[name.lstrip(':')] = char[-1]
|
|
elif args[1] == 'USERMODES':
|
|
# Ditto above.
|
|
for modepair in args[2:]:
|
|
name, char = modepair.split('=')
|
|
irc.umodes[name.lstrip(':')] = char
|
|
elif args[1] == 'CAPABILITIES':
|
|
caps = dict([x.lstrip(':').split('=') for x in args[2:]])
|
|
irc.maxnicklen = caps['NICKMAX']
|
|
irc.maxchanlen = caps['CHANMAX']
|
|
# Modes are divided into A, B, C, and D classes
|
|
# See http://www.irc.org/tech_docs/005.html
|
|
# FIXME: Find a better way to assign/store this.
|
|
irc.cmodes['*A'], irc.cmodes['*B'], irc.cmodes['*C'], irc.cmodes['*D'] \
|
|
= caps['CHANMODES'].split(',')
|
|
irc.umodes['*A'], irc.umodes['*B'], irc.umodes['*C'], irc.umodes['*D'] \
|
|
= caps['USERMODES'].split(',')
|
|
irc.prefixmodes = re.search(r'\((.*?)\)', caps['PREFIX']).group(1)
|
|
try:
|
|
real_args = []
|
|
for arg in args:
|
|
real_args.append(arg)
|
|
# If the argument starts with ':' and ISN'T the first argument.
|
|
# The first argument is used for denoting the source UID/SID.
|
|
if arg.startswith(':') and args.index(arg) != 0:
|
|
# : is used for multi-word arguments that last until the end
|
|
# of the message. We can use list splicing here to turn them all
|
|
# into one argument.
|
|
index = args.index(arg) # Get the array index of the multi-word arg
|
|
# Set the last arg to a joined version of the remaining args
|
|
arg = args[index:]
|
|
arg = ' '.join(arg)[1:]
|
|
# Cut the original argument list right before the multi-word arg,
|
|
# and then append the multi-word arg.
|
|
real_args = args[:index]
|
|
real_args.append(arg)
|
|
break
|
|
real_args[0] = real_args[0].split(':', 1)[1]
|
|
args = real_args
|
|
|
|
numeric = args[0]
|
|
command = args[1]
|
|
args = args[2:]
|
|
except IndexError:
|
|
return
|
|
|
|
# We will do wildcard event handling here. Unhandled events are just ignored.
|
|
try:
|
|
func = globals()['handle_'+command.lower()]
|
|
parsed_args = func(irc, numeric, command, args)
|
|
except KeyError: # unhandled event
|
|
pass
|
|
else:
|
|
# Only call our hooks if there's data to process. Handlers that support
|
|
# hooks will return a dict of parsed arguments, which can be passed on
|
|
# to plugins and the like. For example, the JOIN handler will return
|
|
# something like: {'channel': '#whatever', 'users': ['UID1', 'UID2',
|
|
# 'UID3']}, etc.
|
|
if parsed_args:
|
|
hook_cmd = command
|
|
if command in hook_map:
|
|
hook_cmd = hook_map[command]
|
|
print('Parsed args %r received from %s handler (calling hook %s)' % (parsed_args, command, hook_cmd))
|
|
# Iterate over hooked functions, catching errors accordingly
|
|
for hook_func in utils.command_hooks[hook_cmd]:
|
|
try:
|
|
print('Calling function %s' % hook_func)
|
|
hook_func(irc, numeric, command, parsed_args)
|
|
except Exception:
|
|
# We don't want plugins to crash our servers...
|
|
traceback.print_exc()
|
|
continue
|
|
|
|
def spawnServer(irc, name, sid, uplink=None, desc='PyLink Server'):
|
|
# -> :0AL SERVER test.server * 1 0AM :some silly pseudoserver
|
|
uplink = uplink or irc.sid
|
|
name = name.lower()
|
|
assert len(sid) == 3, "Incorrect SID length"
|
|
if sid in irc.servers:
|
|
raise ValueError('A server with SID %r already exists!' % sid)
|
|
for server in irc.servers.values():
|
|
if name == server.name:
|
|
raise ValueError('A server named %r already exists!' % name)
|
|
if not utils.isInternalServer(irc, uplink):
|
|
raise ValueError('Server %r is not a PyLink internal PseudoServer!' % uplink)
|
|
if not utils.isServerName(name):
|
|
raise ValueError('Invalid server name %r' % name)
|
|
_sendFromServer(irc, uplink, 'SERVER %s * 1 %s :%s' % (name, sid, desc))
|
|
_sendFromServer(irc, sid, 'ENDBURST')
|
|
irc.servers[sid] = IrcServer(uplink, name, internal=True)
|