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Rework pylock to behave like xlock

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This commit is contained in:
Matthias Schiffer 2013-03-06 14:16:47 +01:00
parent e342d5c724
commit 4659883ba0
4 changed files with 43 additions and 154 deletions
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71
Idle.py
View file

@ -1,71 +0,0 @@
# Copyright (c) 2012, Matthias Schiffer <mschiffer@universe-factory.net>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import ctypes
import ctypes.util
from gi.repository import GdkX11
class XScreenSaverInfo(ctypes.Structure):
_fields_ = [
('window', ctypes.c_ulong),
('state', ctypes.c_int),
('kind', ctypes.c_int),
('til_or_since', ctypes.c_ulong),
('idle', ctypes.c_ulong),
('eventMask', ctypes.c_ulong)
]
XScreenSaverInfo_p = ctypes.POINTER(XScreenSaverInfo)
display_p = ctypes.c_void_p
xid = ctypes.c_ulong
c_int_p = ctypes.POINTER(ctypes.c_int)
libXsspath = ctypes.util.find_library('Xss')
if libXsspath == None:
raise OSError('libXss could not be found.')
libXss = ctypes.cdll.LoadLibrary(libXsspath)
libXss.XScreenSaverQueryExtension.argtypes = display_p, c_int_p, c_int_p
libXss.XScreenSaverAllocInfo.restype = XScreenSaverInfo_p
libXss.XScreenSaverQueryInfo.argtypes = (display_p, xid, XScreenSaverInfo_p)
dpy_p = hash(GdkX11.x11_get_default_xdisplay())
rootwindow = GdkX11.x11_get_default_root_xwindow()
_event_basep = ctypes.c_int()
_error_basep = ctypes.c_int()
if libXss.XScreenSaverQueryExtension(ctypes.c_void_p(dpy_p), ctypes.byref(_event_basep),
ctypes.byref(_error_basep)) == 0:
raise OSError('XScreenSaver Extension not available on display.')
xss_info_p = libXss.XScreenSaverAllocInfo()
if xss_info_p == None:
raise OSError('XScreenSaverAllocInfo: Out of Memory.')
def getIdleSec():
if libXss.XScreenSaverQueryInfo(dpy_p, rootwindow, xss_info_p) == 0:
return 0
else:
return int(xss_info_p.contents.idle) / 1000

25
Locker.py
View file

@ -24,35 +24,16 @@
from gi.repository import Gtk, GLib
import Idle
class Locker(object):
def __init__(self, lockTimeout, doLock, doUnlock, logoutTimeout = None, doLogout = None, updateLogoutTimeout = None):
def __init__(self, doLock, doUnlock, logoutTimeout = None, doLogout = None, updateLogoutTimeout = None):
self.locked = False
self.lockTimeout = lockTimeout
self.logoutTimeout = logoutTimeout
self.doLock = doLock
self.doUnlock = doUnlock
self.doLogout = doLogout
self.updateLogoutTimeout = updateLogoutTimeout
if self.lockTimeout > 0:
GLib.timeout_add_seconds(1, self._checkLock)
else:
GLib.idle_add(self.lock)
def _checkLock(self):
if self.locked:
return False
idle = Idle.getIdleSec()
if (idle >= self.lockTimeout):
GLib.idle_add(self.lock)
return False
else:
return True
def _checkLogout(self):
if not self.locked:
return False
@ -68,7 +49,7 @@ class Locker(object):
self.locked = True
if not self.doLock(self.logoutTimeout):
self.locked = False
GLib.timeout_add_seconds(1, self._checkLock)
GLib.timeout_add_seconds(1, self.lock)
return False
if self.doLogout is not None:
@ -84,8 +65,6 @@ class Locker(object):
self.doUnlock()
self.locked = False
GLib.timeout_add_seconds(1, self._checkLock)
def _canLogout(self):
return (self.locked and self.doLogout is not None and self.currentLogoutTimeout <= 0)

22
Message.py → Selection.py
View file

@ -1,4 +1,4 @@
# Copyright (c) 2012, Matthias Schiffer <mschiffer@universe-factory.net>
# Copyright (c) 2012-2013, Matthias Schiffer <mschiffer@universe-factory.net>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
@ -41,8 +41,6 @@ if libX11 == None:
raise OSError('libX11 could not be found.')
libX11 = ctypes.cdll.LoadLibrary(libX11)
libX11.XSendEvent.argtypes = display_p, xid, x11_bool, ctypes.c_long, XEvent_p
libX11.XSendEvent.restype = status
libX11.XSetSelectionOwner.argtypes = display_p, xid, xid, x11_time
libX11.XSetSelectionOwner.restype = ctypes.c_int
libX11.XGetSelectionOwner.argtypes = display_p, xid
@ -52,27 +50,17 @@ libX11.XGetSelectionOwner.restype = xid
display = Gdk.Display.get_default()
dpy_p = display_p(hash(GdkX11.X11Display.get_xdisplay(display)))
atomPylockWindow = GdkX11.x11_get_xatom_by_name("PYLOCK_WINDOW")
atomPylockActionLock = GdkX11.x11_get_xatom_by_name("PYLOCK_ACTION_LOCK")
def getSelection():
def get():
return libX11.XGetSelectionOwner(dpy_p, atomPylockWindow)
def sendLockMessage():
window = getSelection()
if window == 0:
return
gdkWindow = GdkX11.X11Window.foreign_new_for_display(display, window)
gdkWindow.show()
display.sync()
def acquireSelection(window):
if getSelection() != 0:
def acquire(window):
if get() != 0:
return False
window.realize()
xid = GdkX11.X11Window.get_xid(window.get_window())
libX11.XSetSelectionOwner(dpy_p, atomPylockWindow, xid, 0)
return (getSelection() == xid)
return (get() == xid)

79
pylock.py
View file

@ -30,33 +30,27 @@ import sys
import os
import pwd
import locale
import argparse
import configparser
from gi.repository import Gtk, Gdk, Gio
from gi.repository import Gtk, GLib
from Locker import Locker
from LockWindow import LockWindow
import Message
import Selection
import pam
CONFIG_FILE = '/etc/pylock.conf'
_ = locale.gettext
def get_username():
return pwd.getpwuid(os.getuid())[0]
configParser = configparser.ConfigParser()
configParser.read_file(open(CONFIG_FILE))
theme = 'UzL-login'
parser = argparse.ArgumentParser(prog='pylock', description=_('GTK-based screen locker.'))
parser.add_argument('-t', '--timeout', type=int, default=0, help=_('Start in daemon mode that will automatically activate after a given time of inactivity.'))
parser.add_argument('-l', '--logout', type=int, default=0, help=_('Allow to logout the current user after a given time.'))
parser.add_argument('-c', '--logout-command', help=_('Specifies the command to be called to log out a user.'))
parser.add_argument('-u', '--username', default=get_username(), help=_('Set the name of the user that is able to unlock the screen.'))
args = parser.parse_args()
config = configParser['pylock']
username = pwd.getpwuid(os.getuid())[0]
def handler(signum, frame):
@ -71,66 +65,65 @@ signal.signal(signal.SIGQUIT, handler)
locale.setlocale(locale.LC_ALL, '')
locale.textdomain('pylock')
Gtk.Settings.get_default().set_property('gtk-theme-name', theme)
Gtk.Settings.get_default().set_property('gtk-theme-name', config['theme'])
if Message.getSelection() != 0:
if args.timeout == 0:
Message.sendLockMessage()
exit(0)
else:
print('There seems to be a Pylock instance already running.', file=sys.stderr)
exit(1)
def waitForSelection():
if Selection.get() != 0:
return True
Gtk.main_quit()
return False
if Selection.get() != 0:
GLib.timeout_add_seconds(1, waitForSelection)
Gtk.main()
exit(0)
window = LockWindow()
if not Message.acquireSelection(window):
print('Unable to register for lock messages', file=sys.stderr)
if not Selection.acquire(window):
print('Unable to register pylock at X server', file=sys.stderr)
exit(1)
def lock(timeLeft):
window.updateLockMessage(args.username, timeLeft)
window.updateLockMessage(username, timeLeft)
return window.lock()
def logout():
try:
os.system(args.logout_command)
os.system(config['logout_command'])
except:
pass
window.reset(False)
def updateTimeout(timeLeft):
window.updateLockMessage(args.username, timeLeft)
window.updateLockMessage(username, timeLeft)
if args.logout_command is None:
locker = Locker(args.timeout, lock, window.unlock)
if not ('logout_timeout' in config and 'logout_command' in config):
locker = Locker(lock, window.unlock)
else:
locker = Locker(args.timeout, lock, window.unlock, args.logout, logout, updateTimeout)
def _triggerLock(w, e):
locker.lock()
window.connect('map-event', _triggerLock)
locker = Locker(lock, window.unlock, int(config['logout_timeout']), logout, updateTimeout)
pamAuth = pam.pam()
def tryUnlock(w, password):
if pamAuth.authenticate(args.username, password):
if pamAuth.authenticate(username, password):
locker.unlock()
if args.timeout == 0:
Gtk.main_quit()
Gtk.main_quit()
else:
window.reset()
window.setAuthMessage(pamAuth.reason)
return True
window.connect('logout', lambda w: locker.logout())
window.connect('tryUnlock', tryUnlock)
GLib.idle_add(lambda: locker.lock())
Gtk.main()