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# -*- coding: utf-8 -*-
#
# File: portato/gui/gtk/plistener.py
# This file is part of the Portato-Project, a graphical portage-frontend.
#
# Copyright (C) 2007 René 'Necoro' Neumann
# This is free software. You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by René 'Necoro' Neumann <necoro@necoro.net>
import socket, os
from subprocess import Popen
from gettext import lgettext as _
try:
import pynotify
except ImportError:
pynotify = None
from constants import SOCKET, APP
from helper import debug, warning
class PListener (object):
"""This class handles the communication between the "listener" and the GUI.
This listener starts programs as the user while the GUI runs as root.
@ivar _recv: listener socket
@type _recv: socket.socket
@ivar _send: sender socket
@type _send: socket.socket"""
def set_recv (self):
self._recv = socket.socket(socket.AF_UNIX)
try:
self._recv.bind(SOCKET)
except socket.error, e:
if int(e[0]) == 98: # already existing - delete
os.unlink(SOCKET)
self._recv.bind(SOCKET)
else:
raise
self._recv.listen(1)
con, addr = self._recv.accept()
while True:
try:
len = con.recv(4)
string = con.recv(int(len))
data = string.split("\0")
if data[0] == "notify":
self.do_notify(*data[1:])
elif data[0] == "cmd":
self.do_cmd(data[1:])
elif data[0] == "close":
break
except KeyboardInterrupt:
pass
con.close()
self._recv.close()
def do_cmd (self, cmdlist):
"""Starts a command as the user.
@param cmdlist: list of command (options)
@type cmdlist: string[]"""
Popen(cmdlist)
def do_notify(self, base, descr, icon, urgency):
"""Displays a notify.
This will do nothing if pynotify is not present and/or root is running the listener."""
if pynotify and not os.getuid == 0:
if not pynotify.is_initted():
pynotify.init(APP)
n = pynotify.Notification(base, descr, icon)
n.set_urgency(int(urgency))
n.show()
def set_send (self):
self._send = socket.socket(socket.AF_UNIX)
try:
self._send.connect(SOCKET)
except socket.error, e:
if e[0] in [111, 2]: # can't connect
warning(_("Listener has not been started."))
self._send = None
else:
raise
def __send (self, string):
self._send.sendall("%4d" % len(string))
self._send.sendall(string)
def send_notify (self, base = "", descr = "", icon = "", urgency = None):
if self._send is None:
self.do_notify(base, descr, icon, urgency)
else:
string = "\0".join(["notify", base, descr, icon])
if urgency is not None:
string += "\0%d" % urgency
else:
string += "\0"
self.__send(string)
def send_cmd (self, cmdlist):
if self._send is None:
self.do_cmd(cmdlist)
else:
self.__send("\0".join(["cmd"] +cmdlist))
def close (self):
if self._send is not None:
self.__send("close")
self._send.close()
os.unlink(SOCKET)
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