3
0
mirror of https://github.com/jlu5/PyLink.git synced 2024-11-01 01:09:22 +01:00

Move Irc() from main.py to classes.py

This prevents import loops (main->utils->classes->main) from the changes in the next commit.
This commit is contained in:
James Lu 2015-08-25 20:37:15 -07:00
parent 51389b96e2
commit 090fa85a46
2 changed files with 257 additions and 250 deletions

View File

@ -1,9 +1,261 @@
import threading import threading
from random import randint from random import randint
import time
import socket
import threading
import ssl
from collections import defaultdict
import hashlib
from log import log from log import log
import main import utils
import time
### Exceptions
class NotAuthenticatedError(Exception):
pass
class ProtocolError(Exception):
pass
### Internal classes (users, servers, channels)
class Irc():
def initVars(self):
self.pseudoclient = None
self.connected = threading.Event()
self.lastping = time.time()
# Server, channel, and user indexes to be populated by our protocol module
self.servers = {self.sid: IrcServer(None, self.serverdata['hostname'], internal=True)}
self.users = {}
self.channels = defaultdict(IrcChannel)
# Sets flags such as whether to use halfops, etc. The default RFC1459
# modes are implied.
self.cmodes = {'op': 'o', 'secret': 's', 'private': 'p',
'noextmsg': 'n', 'moderated': 'm', 'inviteonly': 'i',
'topiclock': 't', 'limit': 'l', 'ban': 'b',
'voice': 'v', 'key': 'k',
# Type A, B, and C modes
'*A': 'b',
'*B': 'k',
'*C': 'l',
'*D': 'imnpstr'}
self.umodes = {'invisible': 'i', 'snomask': 's', 'wallops': 'w',
'oper': 'o',
'*A': '', '*B': '', '*C': 's', '*D': 'iow'}
# This max nick length starts off as the config value, but may be
# overwritten later by the protocol module if such information is
# received. Note that only some IRCds (InspIRCd) give us nick length
# during link, so it is still required that the config value be set!
self.maxnicklen = self.serverdata['maxnicklen']
self.prefixmodes = {'o': '@', 'v': '+'}
# Uplink SID (filled in by protocol module)
self.uplink = None
self.start_ts = int(time.time())
# UID generators, for servers that need it
self.uidgen = {}
def __init__(self, netname, proto, conf):
# Initialize some variables
self.name = netname.lower()
self.conf = conf
self.serverdata = conf['servers'][netname]
self.sid = self.serverdata["sid"]
self.botdata = conf['bot']
self.proto = proto
self.pingfreq = self.serverdata.get('pingfreq') or 30
self.pingtimeout = self.pingfreq * 2
self.initVars()
self.connection_thread = threading.Thread(target = self.connect)
self.connection_thread.start()
self.pingTimer = None
def connect(self):
ip = self.serverdata["ip"]
port = self.serverdata["port"]
while True:
self.initVars()
checks_ok = True
try:
self.socket = socket.socket()
self.socket.setblocking(0)
# Initial connection timeout is a lot smaller than the timeout after
# we've connected; this is intentional.
self.socket.settimeout(self.pingfreq)
self.ssl = self.serverdata.get('ssl')
if self.ssl:
log.info('(%s) Attempting SSL for this connection...', self.name)
certfile = self.serverdata.get('ssl_certfile')
keyfile = self.serverdata.get('ssl_keyfile')
if certfile and keyfile:
try:
self.socket = ssl.wrap_socket(self.socket,
certfile=certfile,
keyfile=keyfile)
except OSError:
log.exception('(%s) Caught OSError trying to '
'initialize the SSL connection; '
'are "ssl_certfile" and '
'"ssl_keyfile" set correctly?',
self.name)
checks_ok = False
else:
log.error('(%s) SSL certfile/keyfile was not set '
'correctly, aborting... ', self.name)
checks_ok = False
log.info("Connecting to network %r on %s:%s", self.name, ip, port)
self.socket.connect((ip, port))
self.socket.settimeout(self.pingtimeout)
if self.ssl and checks_ok:
peercert = self.socket.getpeercert(binary_form=True)
sha1fp = hashlib.sha1(peercert).hexdigest()
expected_fp = self.serverdata.get('ssl_fingerprint')
if expected_fp:
if sha1fp != expected_fp:
log.error('(%s) Uplink\'s SSL certificate '
'fingerprint (SHA1) does not match the '
'one configured: expected %r, got %r; '
'disconnecting...', self.name,
expected_fp, sha1fp)
checks_ok = False
else:
log.info('(%s) Uplink SSL certificate fingerprint '
'(SHA1) verified: %r', self.name, sha1fp)
else:
log.info('(%s) Uplink\'s SSL certificate fingerprint '
'is %r. You can enhance the security of your '
'link by specifying this in a "ssl_fingerprint"'
' option in your server block.', self.name,
sha1fp)
if checks_ok:
self.proto.connect(self)
self.spawnMain()
log.info('(%s) Starting ping schedulers....', self.name)
self.schedulePing()
log.info('(%s) Server ready; listening for data.', self.name)
self.run()
else:
log.error('(%s) A configuration error was encountered '
'trying to set up this connection. Please check'
' your configuration file and try again.',
self.name)
except (socket.error, ProtocolError, ConnectionError) as e:
log.warning('(%s) Disconnected from IRC: %s: %s',
self.name, type(e).__name__, str(e))
self.disconnect()
autoconnect = self.serverdata.get('autoconnect')
log.debug('(%s) Autoconnect delay set to %s seconds.', self.name, autoconnect)
if autoconnect is not None and autoconnect >= 0:
log.info('(%s) Going to auto-reconnect in %s seconds.', self.name, autoconnect)
time.sleep(autoconnect)
else:
return
def disconnect(self):
log.debug('(%s) Canceling pingTimer at %s due to disconnect() call', self.name, time.time())
self.connected.clear()
try:
self.socket.close()
self.pingTimer.cancel()
except: # Socket timed out during creation; ignore
pass
# Internal hook signifying that a network has disconnected.
self.callHooks([None, 'PYLINK_DISCONNECT', {}])
def run(self):
buf = b""
data = b""
while True:
data = self.socket.recv(2048)
buf += data
if self.connected.is_set() and not data:
log.warning('(%s) No data received and self.connected is set; disconnecting!', self.name)
return
elif (time.time() - self.lastping) > self.pingtimeout:
log.warning('(%s) Connection timed out.', self.name)
return
while b'\n' in buf:
line, buf = buf.split(b'\n', 1)
line = line.strip(b'\r')
# TODO: respect other encodings?
line = line.decode("utf-8", "replace")
log.debug("(%s) <- %s", self.name, line)
hook_args = None
try:
hook_args = self.proto.handle_events(self, line)
except Exception:
log.exception('(%s) Caught error in handle_events, disconnecting!', self.name)
return
# 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 hook_args is not None:
self.callHooks(hook_args)
def callHooks(self, hook_args):
numeric, command, parsed_args = hook_args
# Always make sure TS is sent.
if 'ts' not in parsed_args:
parsed_args['ts'] = int(time.time())
hook_cmd = command
hook_map = self.proto.hook_map
# Handlers can return a 'parse_as' key to send their payload to a
# different hook. An example of this is "/join 0" being interpreted
# as leaving all channels (PART).
if command in hook_map:
hook_cmd = hook_map[command]
hook_cmd = parsed_args.get('parse_as') or hook_cmd
log.debug('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:
log.debug('Calling function %s', hook_func)
hook_func(self, numeric, command, parsed_args)
except Exception:
# We don't want plugins to crash our servers...
log.exception('Unhandled exception caught in %r' % hook_func)
continue
def send(self, data):
# Safeguard against newlines in input!! Otherwise, each line gets
# treated as a separate command, which is particularly nasty.
data = data.replace('\n', ' ')
data = data.encode("utf-8") + b"\n"
stripped_data = data.decode("utf-8").strip("\n")
log.debug("(%s) -> %s", self.name, stripped_data)
try:
self.socket.send(data)
except (OSError, AttributeError):
log.debug("(%s) Dropping message %r; network isn't connected!", self.name, stripped_data)
def schedulePing(self):
self.proto.pingServer(self)
self.pingTimer = threading.Timer(self.pingfreq, self.schedulePing)
self.pingTimer.daemon = True
self.pingTimer.start()
log.debug('(%s) Ping scheduled at %s', self.name, time.time())
def spawnMain(self):
nick = self.botdata.get('nick') or 'PyLink'
ident = self.botdata.get('ident') or 'pylink'
host = self.serverdata["hostname"]
log.info('(%s) Connected! Spawning main client %s.', self.name, nick)
olduserobj = self.pseudoclient
self.pseudoclient = self.proto.spawnClient(self, nick, ident, host, modes={("+o", None)})
for chan in self.serverdata['channels']:
self.proto.joinClient(self, self.pseudoclient.uid, chan)
# PyLink internal hook called when spawnMain is called and the
# contents of Irc().pseudoclient change.
self.callHooks([self.sid, 'PYLINK_SPAWNMAIN', {'olduser': olduserobj}])
class IrcUser(): class IrcUser():
def __init__(self, nick, ts, uid, ident='null', host='null', def __init__(self, nick, ts, uid, ident='null', host='null',
@ -60,8 +312,7 @@ class IrcChannel():
s.discard(target) s.discard(target)
self.users.discard(target) self.users.discard(target)
class ProtocolError(Exception): ### FakeIRC classes, used for test cases
pass
global testconf global testconf
testconf = {'bot': testconf = {'bot':
@ -86,7 +337,7 @@ testconf = {'bot':
}, },
} }
class FakeIRC(main.Irc): class FakeIRC(Irc):
def connect(self): def connect(self):
self.messages = [] self.messages = []
self.hookargs = [] self.hookargs = []

246
main.py
View File

@ -2,13 +2,7 @@
import imp import imp
import os import os
import socket
import time
import sys import sys
from collections import defaultdict
import threading
import ssl
import hashlib
from log import log from log import log
import conf import conf
@ -16,244 +10,6 @@ import classes
import utils import utils
import coreplugin import coreplugin
class Irc():
def initVars(self):
self.pseudoclient = None
self.connected = threading.Event()
self.lastping = time.time()
# Server, channel, and user indexes to be populated by our protocol module
self.servers = {self.sid: classes.IrcServer(None, self.serverdata['hostname'], internal=True)}
self.users = {}
self.channels = defaultdict(classes.IrcChannel)
# Sets flags such as whether to use halfops, etc. The default RFC1459
# modes are implied.
self.cmodes = {'op': 'o', 'secret': 's', 'private': 'p',
'noextmsg': 'n', 'moderated': 'm', 'inviteonly': 'i',
'topiclock': 't', 'limit': 'l', 'ban': 'b',
'voice': 'v', 'key': 'k',
# Type A, B, and C modes
'*A': 'b',
'*B': 'k',
'*C': 'l',
'*D': 'imnpstr'}
self.umodes = {'invisible': 'i', 'snomask': 's', 'wallops': 'w',
'oper': 'o',
'*A': '', '*B': '', '*C': 's', '*D': 'iow'}
# This max nick length starts off as the config value, but may be
# overwritten later by the protocol module if such information is
# received. Note that only some IRCds (InspIRCd) give us nick length
# during link, so it is still required that the config value be set!
self.maxnicklen = self.serverdata['maxnicklen']
self.prefixmodes = {'o': '@', 'v': '+'}
# Uplink SID (filled in by protocol module)
self.uplink = None
self.start_ts = int(time.time())
# UID generators, for servers that need it
self.uidgen = {}
def __init__(self, netname, proto, conf):
# Initialize some variables
self.name = netname.lower()
self.conf = conf
self.serverdata = conf['servers'][netname]
self.sid = self.serverdata["sid"]
self.botdata = conf['bot']
self.proto = proto
self.pingfreq = self.serverdata.get('pingfreq') or 30
self.pingtimeout = self.pingfreq * 2
self.initVars()
self.connection_thread = threading.Thread(target = self.connect)
self.connection_thread.start()
self.pingTimer = None
def connect(self):
ip = self.serverdata["ip"]
port = self.serverdata["port"]
while True:
self.initVars()
checks_ok = True
try:
self.socket = socket.socket()
self.socket.setblocking(0)
# Initial connection timeout is a lot smaller than the timeout after
# we've connected; this is intentional.
self.socket.settimeout(self.pingfreq)
self.ssl = self.serverdata.get('ssl')
if self.ssl:
log.info('(%s) Attempting SSL for this connection...', self.name)
certfile = self.serverdata.get('ssl_certfile')
keyfile = self.serverdata.get('ssl_keyfile')
if certfile and keyfile:
try:
self.socket = ssl.wrap_socket(self.socket,
certfile=certfile,
keyfile=keyfile)
except OSError:
log.exception('(%s) Caught OSError trying to '
'initialize the SSL connection; '
'are "ssl_certfile" and '
'"ssl_keyfile" set correctly?',
self.name)
checks_ok = False
else:
log.error('(%s) SSL certfile/keyfile was not set '
'correctly, aborting... ', self.name)
checks_ok = False
log.info("Connecting to network %r on %s:%s", self.name, ip, port)
self.socket.connect((ip, port))
self.socket.settimeout(self.pingtimeout)
if self.ssl and checks_ok:
peercert = self.socket.getpeercert(binary_form=True)
sha1fp = hashlib.sha1(peercert).hexdigest()
expected_fp = self.serverdata.get('ssl_fingerprint')
if expected_fp:
if sha1fp != expected_fp:
log.error('(%s) Uplink\'s SSL certificate '
'fingerprint (SHA1) does not match the '
'one configured: expected %r, got %r; '
'disconnecting...', self.name,
expected_fp, sha1fp)
checks_ok = False
else:
log.info('(%s) Uplink SSL certificate fingerprint '
'(SHA1) verified: %r', self.name, sha1fp)
else:
log.info('(%s) Uplink\'s SSL certificate fingerprint '
'is %r. You can enhance the security of your '
'link by specifying this in a "ssl_fingerprint"'
' option in your server block.', self.name,
sha1fp)
if checks_ok:
self.proto.connect(self)
self.spawnMain()
log.info('(%s) Starting ping schedulers....', self.name)
self.schedulePing()
log.info('(%s) Server ready; listening for data.', self.name)
self.run()
else:
log.error('(%s) A configuration error was encountered '
'trying to set up this connection. Please check'
' your configuration file and try again.',
self.name)
except (socket.error, classes.ProtocolError, ConnectionError) as e:
log.warning('(%s) Disconnected from IRC: %s: %s',
self.name, type(e).__name__, str(e))
self.disconnect()
autoconnect = self.serverdata.get('autoconnect')
log.debug('(%s) Autoconnect delay set to %s seconds.', self.name, autoconnect)
if autoconnect is not None and autoconnect >= 0:
log.info('(%s) Going to auto-reconnect in %s seconds.', self.name, autoconnect)
time.sleep(autoconnect)
else:
return
def disconnect(self):
log.debug('(%s) Canceling pingTimer at %s due to disconnect() call', self.name, time.time())
self.connected.clear()
try:
self.socket.close()
self.pingTimer.cancel()
except: # Socket timed out during creation; ignore
pass
# Internal hook signifying that a network has disconnected.
self.callHooks([None, 'PYLINK_DISCONNECT', {}])
def run(self):
buf = b""
data = b""
while True:
data = self.socket.recv(2048)
buf += data
if self.connected.is_set() and not data:
log.warning('(%s) No data received and self.connected is set; disconnecting!', self.name)
return
elif (time.time() - self.lastping) > self.pingtimeout:
log.warning('(%s) Connection timed out.', self.name)
return
while b'\n' in buf:
line, buf = buf.split(b'\n', 1)
line = line.strip(b'\r')
# TODO: respect other encodings?
line = line.decode("utf-8", "replace")
log.debug("(%s) <- %s", self.name, line)
hook_args = None
try:
hook_args = self.proto.handle_events(self, line)
except Exception:
log.exception('(%s) Caught error in handle_events, disconnecting!', self.name)
return
# 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 hook_args is not None:
self.callHooks(hook_args)
def callHooks(self, hook_args):
numeric, command, parsed_args = hook_args
# Always make sure TS is sent.
if 'ts' not in parsed_args:
parsed_args['ts'] = int(time.time())
hook_cmd = command
hook_map = self.proto.hook_map
# Handlers can return a 'parse_as' key to send their payload to a
# different hook. An example of this is "/join 0" being interpreted
# as leaving all channels (PART).
if command in hook_map:
hook_cmd = hook_map[command]
hook_cmd = parsed_args.get('parse_as') or hook_cmd
log.debug('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:
log.debug('Calling function %s', hook_func)
hook_func(self, numeric, command, parsed_args)
except Exception:
# We don't want plugins to crash our servers...
log.exception('Unhandled exception caught in %r' % hook_func)
continue
def send(self, data):
# Safeguard against newlines in input!! Otherwise, each line gets
# treated as a separate command, which is particularly nasty.
data = data.replace('\n', ' ')
data = data.encode("utf-8") + b"\n"
stripped_data = data.decode("utf-8").strip("\n")
log.debug("(%s) -> %s", self.name, stripped_data)
try:
self.socket.send(data)
except (OSError, AttributeError):
log.debug("(%s) Dropping message %r; network isn't connected!", self.name, stripped_data)
def schedulePing(self):
self.proto.pingServer(self)
self.pingTimer = threading.Timer(self.pingfreq, self.schedulePing)
self.pingTimer.daemon = True
self.pingTimer.start()
log.debug('(%s) Ping scheduled at %s', self.name, time.time())
def spawnMain(self):
nick = self.botdata.get('nick') or 'PyLink'
ident = self.botdata.get('ident') or 'pylink'
host = self.serverdata["hostname"]
log.info('(%s) Connected! Spawning main client %s.', self.name, nick)
olduserobj = self.pseudoclient
self.pseudoclient = self.proto.spawnClient(self, nick, ident, host, modes={("+o", None)})
for chan in self.serverdata['channels']:
self.proto.joinClient(self, self.pseudoclient.uid, chan)
# PyLink internal hook called when spawnMain is called and the
# contents of Irc().pseudoclient change.
self.callHooks([self.sid, 'PYLINK_SPAWNMAIN', {'olduser': olduserobj}])
if __name__ == '__main__': if __name__ == '__main__':
log.info('PyLink starting...') log.info('PyLink starting...')
if conf.conf['login']['password'] == 'changeme': if conf.conf['login']['password'] == 'changeme':
@ -299,7 +55,7 @@ if __name__ == '__main__':
log.critical('Failed to load protocol module: ImportError: %s', protoname, str(e)) log.critical('Failed to load protocol module: ImportError: %s', protoname, str(e))
sys.exit(2) sys.exit(2)
else: else:
utils.networkobjects[network] = Irc(network, proto, conf.conf) utils.networkobjects[network] = classes.Irc(network, proto, conf.conf)
utils.started.set() utils.started.set()
log.info("loaded plugins: %s", utils.plugins) log.info("loaded plugins: %s", utils.plugins)