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rstatus.py
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rstatus.py
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# Copyright 2011 (C) Daniel Richman
#
# This file is part of irssi_rstatus
#
# irssi_rstatus is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# irssi_rstatus is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with irssi_rstatus. If not, see <http://www.gnu.org/licenses/>.
import irssi
import os
import string
import traceback
import time
import errno
import socket
import json
import pprint
# Emulate irssi's nick_match_msg
def fuzzymatch_trtbl_gen():
keep = [
string.digits,
string.uppercase,
string.lowercase
]
table = list('.' * 256)
for data in keep:
first = ord(data[0])
table[first:first + len(data)] = string.lower(data)
table = ''.join(table)
return table
def fuzzymatch(msg, nick, other_channel_nicks):
tmsg = '.' + string.translate(msg, fuzzymatch_trtbl) + '.'
tnick = '.' + string.translate(nick, fuzzymatch_trtbl) + '.'
if tnick not in tmsg:
return False
# extract the bit that matched
p = tmsg.find(tnick) - 1 + 1
match = msg[p:p + len(nick)]
if match in other_channel_nicks:
return False
return True
fuzzymatch_trtbl = fuzzymatch_trtbl_gen()
class RStatus:
timeout_txrx = 60
timeout_heartbeat = 60 * 10
timeout_drop_notify = 10
cbuffer_limit = 8192
def __init__(self, debug=False):
self.debug = debug
self.lasts = {}
self.create_settings()
self.load_settings()
self.create_socket()
if self.debug:
irssi.prnt("RStatus loaded. Windows:")
irssi.prnt(pprint.pformat(self.window_all()))
irssi.signal_add("setup changed", self.load_settings)
irssi.signal_add("setup reread", self.load_settings)
irssi.signal_add("window hilight", self.windowhilight)
irssi.signal_add("message private", self.privmsg)
irssi.signal_add("message public", self.pubmsg)
irssi.signal_add("channel destroyed", self.channeldestroyed)
irssi.signal_add("query destroyed", self.querydestroyed)
irssi.command_bind("rstatus", self.status)
def status(self, data, server, window):
irssi.prnt("RStatus: Current Status: ")
irssi.prnt("Connected clients: {0}".format(len(self.clients)))
irssi.prnt("Server Socket OK? {0}".format(self.socket != False))
for key, (info, etime) in self.lasts.items():
etime = time.strftime("%Y/%m/%d %H:%M:%S", time.localtime(etime))
irssi.prnt("Last {0}: {1} at {2}".format(key, info, etime))
def last_set(self, key, info):
self.lasts[key] = (info, time.time())
def update(self, info):
if not self.filter_event(info):
return
if self.debug:
irssi.prnt("RStatus update: " + pprint.pformat(info))
for conn, client_info in self.clients.items():
if info["type"] == "message" and not client_info["send_messages"]:
continue
self.client_send(conn, info)
def windowhilight(self, window):
self.update(self.window_info(window))
def try_unicode(self, text):
for enc in ["ascii", "utf8", "iso-8859-1", "windows-1252"]:
try:
return unicode(text, enc)
except:
pass
return unicode(text, "ascii", "ignore")
def privmsg(self, server, msg, nick, address):
info = {
"nick": nick,
"server": server.tag,
"type": "message",
"wtype": "query",
"message": self.try_unicode(msg)
}
self.update(info)
def pubmsg(self, server, msg, nick, address, target):
channel = server.channel_find(target)
if channel:
nicks = channel.nicks()
else:
nicks = []
if not fuzzymatch(msg, server.nick, nicks):
return
info = {
"channel": target,
"nick": nick,
"server": server.tag,
"type": "message",
"wtype": "channel",
"message": self.try_unicode(msg)
}
self.update(info)
def channeldestroyed(self, channel):
info = {
"channel": channel.name,
"server": channel.server.tag,
"wtype": "channel",
"level": 0,
"type": "window_level"
}
self.update(info)
def querydestroyed(self, query):
info = {
"nick": query.name,
"server": query.server.tag,
"wtype": "query",
"level": 0,
"type": "window_level"
}
self.update(info)
def window_all(self):
return map(self.window_info, irssi.windows())
def window_info(self, window):
if not window.active:
return False
if isinstance(window.active, irssi.IrcChannel):
wtype = "channel"
wprop = "channel"
elif isinstance(window.active, irssi.Query):
wtype = "query"
wprop = "nick"
else:
return False
if len(window.active.name) == 0:
return False
info = {
wprop: window.active.name,
"server": window.active.server.tag,
"level": window.data_level,
"wtype": wtype,
"type": "window_level"
}
return info
def filter_event(self, info):
if info == False:
return False
if info["wtype"] == "channel":
default = self.settings["default_channels"]
name = info["channel"].lower()
elif info["wtype"] == "query":
default = self.settings["default_queries"]
name = info["nick"].lower()
else:
return False
if name in self.settings["override_notify"]:
return True
if name in self.settings["override_ignore"]:
return False
return default
def create_settings(self):
irssi.settings_add_str("rstatus", "socket", "~/.irssi/rstatus_sock")
irssi.settings_add_str("rstatus", "default_channels", "notify")
irssi.settings_add_str("rstatus", "default_queries", "notify")
irssi.settings_add_str("rstatus", "override_notify", "")
irssi.settings_add_str("rstatus", "override_ignore", "")
def load_settings(self, *args):
nikeys = ["default_channels", "default_queries"]
setkeys = ["override_notify", "override_ignore"]
keys = nikeys + setkeys + ["socket"]
settings = {}
for key in keys:
settings[key] = irssi.settings_get_str(key)
for key in setkeys:
settings[key] = set([i.lower() for i in settings[key].split()])
for key in nikeys:
if settings[key] not in ["notify", "ignore"]:
irssi.prnt("RStatus: Warning: option " + key + " is invalid")
settings[key] = (settings[key] == "notify")
settings["socket"] = os.path.expanduser(settings["socket"])
self.settings = settings
def create_socket(self):
self.clients = {}
self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
try:
os.unlink(self.settings["socket"])
except OSError, e:
if e.errno != errno.ENOENT:
raise
self.socket.bind(self.settings["socket"])
self.socket.setblocking(0)
self.socket.listen(5)
irssi.get_script().io_add_watch(self.socket, self.socket_activity,
self.socket)
def socket_activity(self, fd, condition, sock):
if sock != self.socket or sock.fileno() != fd:
return False
try:
(conn, address) = self.socket.accept()
except:
irssi.prnt("RStatus: Socket error:")
irssi.prnt(traceback.format_exc())
self.socket.close()
self.socket = None
return False
if self.debug:
irssi.prnt("RStatus: new client connected")
if address == '':
address = 'UNIX Socket'
self.last_set("connect", address)
conn.setblocking(False)
clientinfo = {
"send_queue": "",
"recv_buffer": "",
"send_messages": False,
"watches": {},
"timeouts": {}
}
clientinfo["watches"]["recv"] = \
irssi.get_script().io_add_watch(conn, self.client_try_recv,
conn, irssi.IO_IN)
clientinfo["watches"]["err"] = \
irssi.get_script().io_add_watch(conn, self.client_drop_ioerror,
conn, irssi.IO_ERR)
clientinfo["watches"]["hup"] = \
irssi.get_script().io_add_watch(conn, self.client_drop_ioerror,
conn, irssi.IO_HUP)
self.clients[conn] = clientinfo
self.client_timeout_set(conn, "recv", self.timeout_heartbeat,
self.client_drop_timeout, (conn, "RECV Timeout (HB, F)"))
self.client_new(conn)
return True
def client_timeout_set(self, conn, name, timeout, func, data=None):
clientinfo = self.clients[conn]
if name in clientinfo["timeouts"]:
irssi.get_script().source_remove(clientinfo["timeouts"][name])
clientinfo["timeouts"][name] = \
irssi.get_script().timeout_add(timeout * 1000, func, data)
def client_sendwatch_add(self, conn, watch):
clientinfo = self.clients[conn]
assert "send" not in clientinfo["watches"]
clientinfo["watches"]["send"] = \
irssi.get_script().io_add_watch(conn, self.client_try_send,
conn, irssi.IO_OUT)
def client_drop_timeout(self, conn, reason):
self.client_drop(conn, reason)
return False
def client_drop_ioerror(self, fd, condition, conn):
if conn not in self.clients or conn.fileno() != fd:
return False
if condition == irssi.IO_HUP:
reason = "IO Hangup"
elif condition == irssi.IO_ERR:
reason = "IO Error"
else:
reason = "IO Error (U)"
self.client_drop(conn, reason)
return False
def client_conn_close(self, conn):
conn.shutdown(socket.SHUT_RDWR)
conn.close()
def client_drop(self, conn, reason, notify=False):
if self.debug:
irssi.prnt("RStatus: Dropping client: '{0}'".format(reason))
self.last_set("drop", reason)
clientinfo = self.clients[conn]
del self.clients[conn]
tags = clientinfo["watches"].values() + clientinfo["timeouts"].values()
for tag in tags:
irssi.get_script().source_remove(tag)
if notify and len(clientinfo["send_queue"]) == 0:
try:
conn.send(json.dumps({"type": "disconnect_notice"}) + "\n")
except:
self.client_conn_close(conn)
else:
irssi.get_script().timeout_add(self.timeout_drop_notify * 1000,
self.client_conn_close, conn)
else:
self.client_conn_close(conn)
def client_try_recv(self, fd, condition, conn):
if conn not in self.clients or conn.fileno() != fd:
return False
try:
data = conn.recv(1024)
except:
if self.debug:
irssi.prnt("RStatus: Client IO error:")
irssi.prnt(traceback.format_exc())
self.client_drop(conn, "RECV IO Error")
return False
if not data:
if self.debug:
irssi.prnt("RStatus: Client read failed")
self.client_drop(conn, "RECV failed (EOF)")
return False
self.clients[conn]["recv_buffer"] += data
if len(self.clients[conn]["recv_buffer"]) > self.cbuffer_limit:
self.client_drop(conn, "RECV Buffer Overflow", notify=True)
return False
if "\n" in self.clients[conn]["recv_buffer"]:
data_parts = self.clients[conn]["recv_buffer"].split("\n")
self.clients[conn]["recv_buffer"] = data_parts[-1]
data_parts = data_parts[:-1]
for data in data_parts:
if data == "":
continue
try:
data = json.loads(data)
assert isinstance(data, dict)
self.client_recv(conn, data)
# Happens when we receive a disconnect request
if conn not in self.clients:
return False
except:
if self.debug:
irssi.prnt("RStatus: Client parse failed")
irssi.prnt(traceback.format_exc())
self.client_drop(conn, "RECV BAD JSON", notify=True)
return False
if len(self.clients[conn]["recv_buffer"]) > 0:
timeout = self.timeout_txrx
reason = "RX"
else:
timeout = self.timeout_heartbeat
reason = "HB"
reason = "RECV Timeout ({0})".format(reason)
self.client_timeout_set(conn, "recv", timeout,
self.client_drop_timeout, (conn, reason))
return True
def client_try_send(self, fd, condition, conn, init=False):
if conn not in self.clients or (not init and conn.fileno() != fd):
return False
try:
sent = conn.send(self.clients[conn]["send_queue"])
if not init:
assert sent > 0
except Exception, e:
if isinstance(e, socket.error) and e.errno == errno.EAGAIN and \
init:
sent = 0
else:
if self.debug:
irssi.prnt("RStatus: Client send failed")
irssi.prnt(traceback.format_exc())
self.client_drop(conn, "SEND IO Error")
return False
self.clients[conn]["send_queue"] = \
self.clients[conn]["send_queue"][sent:]
if len(self.clients[conn]["send_queue"]) > 0:
self.client_timeout_set(conn, "send", self.timeout_txrx,
self.client_drop_timeout, (conn, "SEND Timeout (TX)"))
if "send" not in self.clients[conn]["watches"]:
self.client_sendwatch_add(conn, True)
return True
else:
self.client_timeout_set(conn, "send", self.timeout_heartbeat,
self.client_heartbeat_send, conn)
return False
def client_reset(self, conn):
self.client_send(conn, {"type": "reset"})
self.client_new(conn)
def client_new(self, conn):
for window in filter(self.filter_event, self.window_all()):
self.client_send(conn, window)
def client_recv(self, conn, data):
if data["type"] == "settings":
if data["send_messages"]:
self.clients[conn]["send_messages"] = True
else:
self.clients[conn]["send_messages"] = False
elif data["type"] == "reset_request":
self.client_reset(conn)
elif data["type"] == "disconnect":
self.client_drop(conn, "Graceful Disconnect", notify=True)
def client_send(self, conn, data):
data = json.dumps(data)
assert "\n" not in data and len(data) < self.cbuffer_limit
data += "\n"
if len(self.clients[conn]["send_queue"]) != 0:
self.clients[conn]["send_queue"] += data
if len(self.clients[conn]["send_queue"]) > self.cbuffer_limit:
self.client_drop(conn, "SEND Buffer Overflow")
else:
self.clients[conn]["send_queue"] = data
self.client_try_send(None, None, conn, init=True)
def client_heartbeat_send(self, conn):
clientinfo = self.clients[conn]
assert len(clientinfo["send_queue"]) == 0
clientinfo["send_queue"] = "\n"
self.client_try_send(None, None, conn, init=True)
return False
if not getattr(irssi, "test_mode", False):
rstatus = RStatus()