/usr/bin/ubiquity-dm is in ubiquity 2.10.16.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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import os
import sys
import subprocess
import time
import signal
import errno
import imp
import grp
import pwd
import debconf
sys.path.insert(0, '/usr/lib/ubiquity')
import ubiquity.frontend
from ubiquity import osextras
from ubiquity import gsettings
from ubiquity.misc import create_bool
from ubiquity.casper import get_casper
from ubiquity.debconfcommunicator import DebconfCommunicator
def ck_open_session(uid):
import dbus
bus = dbus.SystemBus ()
manager_obj = bus.get_object ('org.freedesktop.ConsoleKit',
'/org/freedesktop/ConsoleKit/Manager')
manager = dbus.Interface (manager_obj, 'org.freedesktop.ConsoleKit.Manager')
params = dbus.Array ([], signature = "(sv)")
params.append(("unix-user", dbus.Int32(uid)))
params.append(("session-type", dbus.String("")))
params.append(("x11-display", dbus.String(os.environ['DISPLAY'])))
params.append(("x11-display-device", dbus.String('/dev/tty7')))
params.append(("is-local", dbus.Boolean(True)))
cookie = manager.OpenSessionWithParameters(params)
os.environ['XDG_SESSION_COOKIE'] = cookie
def set_locale():
db = DebconfCommunicator('ubiquity', cloexec=True)
locale = ''
try:
locale = db.get('debian-installer/locale')
except debconf.DebconfError:
pass
db.shutdown()
if not locale:
return
default_locale = open('/etc/default/locale', 'w')
print >>default_locale, 'LANG="%s"' % locale
default_locale.close()
environment = open('/etc/environment')
environment_lines = environment.readlines()
environment.close()
environment = open('/etc/environment', 'w')
seen_lang = False
for line in environment_lines:
if line.startswith('LANG='):
print >>environment, 'LANG="%s"' % locale
seen_lang = True
else:
print >>environment, line.rstrip('\n')
if not seen_lang:
print >>environment, 'LANG="%s"' % locale
environment.close()
locale_gen = open('/etc/locale.gen', 'w')
print >>locale_gen, '%s UTF-8' % locale
locale_gen.close()
logfile = open('/var/log/installer/dm', 'a')
subprocess.call(['/usr/sbin/locale-gen', locale],
stdout=logfile, stderr=logfile)
logfile.close()
class XStartupError(EnvironmentError):
pass
class MissingProgramError(EnvironmentError):
pass
class DM:
def __init__(self, vt, display, default_username):
self.vt = vt
self.display = display
self.server_started = False
self.username = get_casper('USERNAME', default_username)
try:
self.uid, self.gid = pwd.getpwnam(self.username)[2:4]
except KeyError:
import syslog
syslog.syslog('Could not find %s, falling back to root.' %
self.username)
self.username = 'root'
self.uid, self.gid = 0, 0
os.environ['SUDO_USER'] = self.username
self.homedir = pwd.getpwnam(self.username)[5]
self.uid = int(self.uid)
self.gid = int(self.gid)
self.groups = []
for g in grp.getgrall():
if self.username in g[3] or g[0] == self.username:
self.groups.append(g[2])
# Look for a frontend module; we won't actually use it (yet), but
# this lets us find out which window manager etc. to launch. Be
# careful that importing this here will cause the underlying library
# to try to talk to the X server, which won't go well.
frontend_names = ['gtk_ui', 'kde_ui']
self.frontend = None
for f in frontend_names:
try:
imp.find_module(f, ubiquity.frontend.__path__)
self.frontend = f
break
except ImportError:
pass
else:
raise AttributeError('No frontend available; tried %s' %
', '.join(frontend_names))
db = DebconfCommunicator('ubiquity', cloexec=True)
try:
self.force_failsafe = create_bool(db.get('ubiquity/force_failsafe_graphics'))
except debconf.DebconfError:
self.force_failsafe = False
db.shutdown()
def sigusr1_handler(self, signum, frame):
self.server_started = True
def active_vt(self):
import fcntl
import array
console = os.open('/dev/tty0', os.O_RDONLY | os.O_NOCTTY)
try:
VT_GETSTATE = 0x5603
vt_stat = array.array('H', [0, 0, 0])
fcntl.ioctl(console, VT_GETSTATE, vt_stat)
return vt_stat[0]
finally:
os.close(console)
def drop_privileges(self):
os.setgroups(self.groups)
os.setgid(self.gid)
os.setuid(self.uid)
def server_preexec(self):
signal.signal(signal.SIGUSR1, signal.SIG_IGN)
def run(self, *program):
null = open('/dev/null', 'w')
try:
os.makedirs('/var/log/installer')
except OSError, e:
# be happy if someone already created the path
if e.errno != errno.EEXIST:
raise
logfile = open('/var/log/installer/dm', 'w')
signal.signal(signal.SIGUSR1, self.sigusr1_handler)
signal.signal(signal.SIGTTIN, signal.SIG_IGN)
signal.signal(signal.SIGTTOU, signal.SIG_IGN)
servercommand = ['X', '-br', '-ac', '-noreset', '-nolisten', 'tcp']
try:
plymouth_running = subprocess.call(['plymouth', '--ping']) == 0
except OSError:
plymouth_running = False
if plymouth_running:
subprocess.call(['plymouth', 'deactivate'])
if subprocess.call(['plymouth', '--has-active-vt']) == 0:
self.vt = 'vt%d' % self.active_vt()
servercommand.append('-nr')
else:
subprocess.call(['plymouth', 'quit'])
plymouth_running = False
servercommand.extend([self.vt, self.display])
for attempt in ('main', 'fbdev', 'vesa'):
command = list(servercommand)
if attempt == 'main' and self.force_failsafe:
continue
elif attempt != 'main':
# TODO cjwatson 2010-02-11: This is a bodge. The
# duplication is nasty, but fortunately bullet-proof X
# actually turns out not to be very complicated nowadays.
# Most of the complexity is in the fallback session, which I
# haven't attempted to integrate here, so you won't get
# things like interactive reconfiguration. I believe Evan
# is working on doing that, but is blocked on a couple of
# Upstart bugs; once all that's resolved, we should back
# this out.
if attempt == 'fbdev' and not os.path.exists('/dev/fb0'):
continue
xorg_conf_failsafe = '/etc/X11/xorg.conf.failsafe'
command.extend(['-config', xorg_conf_failsafe])
command.extend(['-logfile', '/var/log/Xorg.%s.log' % attempt])
xorg_conf_failsafe_file = open(xorg_conf_failsafe, 'w')
print >>xorg_conf_failsafe_file, '''\
Section "Device"
Identifier "Configured Video Device"
Driver "%s"
EndSection
Section "Monitor"
Identifier "Configured Monitor"
EndSection
Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
EndSection
''' % attempt
xorg_conf_failsafe_file.close()
server = subprocess.Popen(
command, stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.server_preexec)
# Really we should select on a pipe or something, but it's not
# worth the effort for now.
try:
timeout = 60
while not self.server_started:
status = server.poll()
if type(status) is int and status != 0:
if plymouth_running:
subprocess.call(['plymouth', 'quit'])
raise XStartupError('X server exited with return code '
+ str(status))
if timeout == 0:
if plymouth_running:
subprocess.call(['plymouth', 'quit'])
raise XStartupError('X server failed to start after 60'
' seconds')
time.sleep(1)
timeout -= 1
if plymouth_running:
subprocess.call(['plymouth', 'quit', '--retain-splash'])
except XStartupError:
if attempt == 'vesa':
raise
if self.server_started:
break
os.environ['DISPLAY'] = self.display
os.environ['HOME'] = self.homedir
# Give ubiquity a UID and GID that it can drop privileges to.
os.environ['SUDO_UID'] = str(self.uid)
os.environ['SUDO_GID'] = str(self.gid)
os.environ['GVFS_DISABLE_FUSE' ] = '1'
ck_open_session(self.uid)
# Session bus, apparently needed by most interfaces now
if ('DBUS_SESSION_BUS_ADDRESS' not in os.environ and
osextras.find_on_path('dbus-launch')):
dbus_subp = subprocess.Popen(
['dbus-launch', '--exit-with-session'],
stdin=null, stdout=subprocess.PIPE, stderr=logfile,
preexec_fn=self.drop_privileges)
for line in dbus_subp.stdout:
try:
name, value = line.rstrip('\n').split('=', 1)
os.environ[name] = value
except ValueError:
pass
dbus_subp.stdout.close()
dbus_subp.wait()
gconfd_running = False
if (self.frontend == 'gtk_ui' and
osextras.find_on_path('gconftool-2')):
subprocess.call(['gconftool-2', '--spawn'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
gconfd_running = True
extras = []
if self.frontend == 'gtk_ui':
gconf_dir = ('xml:readwrite:%s' %
os.path.expanduser('~%s/.gconf' %
self.username))
accessibility = False
if (osextras.find_on_path('gconftool-2') and
gsettings._gsettings_exists()):
# Set number of workspaces to 1 in metacity
# (still using gconf, GNOME: #621204)
subprocess.call(
['gconftool-2', '--config-source', gconf_dir,
'--type', 'int', '--set',
'/apps/metacity/general/num_workspaces', '1',],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
# Set gsettings keys
gsettings_keys = [
('org.gnome.desktop.lockdown', 'disable-lock-screen', 'true'),
('org.gnome.desktop.lockdown', 'disable-user-switching', 'true'),
]
for gs_schema, gs_key, gs_value in gsettings_keys:
gsettings.set(gs_schema, gs_key, gs_value, self.username)
accessibility = gsettings.get('org.gnome.desktop.interface',
'toolkit-accessibility', self.username)
# Accessibility infrastructure
with open('/proc/cmdline', 'r') as fp:
if (accessibility == True or 'maybe-ubiquity' in fp.readline()):
if os.path.exists('/usr/lib/at-spi2-core/at-spi-bus-launcher'):
extras.append(subprocess.Popen(
['/usr/lib/at-spi2-core/at-spi-bus-launcher',
'--launch-immediately'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
os.environ['GTK_MODULES'] = 'gail:atk-bridge'
# Set a desktop wallpaper.
with open('/proc/cmdline', 'r') as fp:
for background in ('/usr/share/backgrounds/edubuntu_default.png',
'/usr/share/xfce4/backdrops/macinnis_wallpaper.png',
'/usr/share/xfce4/backdrops/xubuntu-precise-right.png',
'/usr/share/backgrounds/warty-final-ubuntu.png'):
exists = os.access(background, os.R_OK)
if (exists and not 'access=v1' in fp.readline()):
extras.append(subprocess.Popen(['/usr/lib/ubiquity/wallpaper', background],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
break
if self.frontend == 'gtk_ui':
if gconfd_running and osextras.find_on_path('metacity'):
wm_cmd = ['metacity', '--sm-disable']
elif osextras.find_on_path('xfwm4'):
wm_cmd = ['xfwm4']
elif osextras.find_on_path('matchbox-window-manager'):
wm_cmd = ['matchbox-window-manager']
elif osextras.find_on_path('openbox-lubuntu'):
wm_cmd = ['openbox-lubuntu']
elif osextras.find_on_path('openbox'):
wm_cmd = ['openbox']
else:
raise MissingProgramError('No window manager found (tried '
'metacity, xfwm4, matchbox-window-manager, '
'openbox-lubuntu, openbox)')
wm = subprocess.Popen(wm_cmd,
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
if os.path.exists('/usr/lib/gnome-settings-daemon/gnome-settings-daemon'):
proc = subprocess.Popen(
['/usr/lib/gnome-settings-daemon/gnome-settings-daemon'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
extras.append(proc)
if os.path.exists('/usr/bin/xfsettingsd'):
extras.append(subprocess.Popen(
['xsetroot', '-solid', 'black'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
extras.append(subprocess.Popen(
['/usr/bin/xfsettingsd'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
if osextras.find_on_path('lxsession'):
proc = subprocess.Popen(
['lxsession','-s','Lubuntu', '-e', 'LXDE', '-a'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
extras.append(proc)
if os.path.exists('/usr/lib/ubiquity/panel') and "xfwm4" not in wm_cmd:
if "openbox-lubuntu" not in wm_cmd and "openbox" not in wm_cmd:
extras.append(subprocess.Popen(
['/usr/lib/ubiquity/panel'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
if osextras.find_on_path('nm-applet'):
extras.append(subprocess.Popen(
['nm-applet'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
if osextras.find_on_path('ibus-daemon'):
extras.append(subprocess.Popen(
['ibus-daemon'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
# Simply start bluetooth-applet, ubiquity-bluetooth-agent will
# override it from casper to make sure it also covers the regular
# live session
if osextras.find_on_path('bluetooth-applet'):
extras.append(subprocess.Popen(
['bluetooth-applet'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
# Accessibility tools
if accessibility == True:
with open('/proc/cmdline', 'r') as fp:
if 'access=m2' in fp.readline():
if osextras.find_on_path('onboard'):
extras.append(subprocess.Popen(['onboard'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
else:
if osextras.find_on_path('orca'):
time.sleep(15)
extras.append(subprocess.Popen(['orca', '-n'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges))
elif self.frontend == 'kde_ui':
# Don't show the background image in v1 accessibility profile.
os.setegid(self.gid)
os.seteuid(self.uid)
path = '/usr/share/wallpapers/kde-default.png'
with open('/proc/cmdline', 'r') as fp:
if (os.access(path, os.R_OK)
and not 'access=v1' in fp.readline()):
# Draw a background image for the install progress window.
from PyQt4.QtCore import Qt
from PyQt4 import QtGui
a = QtGui.QApplication(sys.argv)
root_win = a.desktop()
wallpaper = QtGui.QPixmap(path)
wallpaper = wallpaper.scaled(root_win.width(),
root_win.height(), Qt.KeepAspectRatioByExpanding,
Qt.SmoothTransformation)
palette = QtGui.QPalette()
palette.setBrush(root_win.backgroundRole(),
QtGui.QBrush(wallpaper))
root_win.setPalette(palette)
root_win.setCursor(Qt.ArrowCursor)
a.processEvents()
# Force garbage collection so we don't end up with stray X
# resources when we kill the X server (LP: #556555).
del a
os.seteuid(0)
os.setegid(0)
subprocess.call(
['kwriteconfig', '--file', 'kwinrc', '--group', 'Compositing',
'--key', 'Enabled', 'false'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
wm = subprocess.Popen('kwin',
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
greeter = subprocess.Popen(program, stdin=null, stdout=logfile, stderr=logfile)
ret = greeter.wait()
reboot = False
if ret != 0:
db = DebconfCommunicator('ubiquity', cloexec=True)
try:
error_cmd = db.get('ubiquity/failure_command')
if error_cmd:
subprocess.call(['sh', '-c', error_cmd])
except debconf.DebconfError:
pass
reboot = False
try:
if '--automatic' in program:
reboot = db.get('ubiquity/reboot_on_failure') == 'true'
except debconf.DebconfError:
pass
if reboot:
question = 'ubiquity/install_failed_reboot'
else:
question = 'ubiquity/install_failed'
title = ''
message = ''
try:
title = unicode(db.metaget(question, 'description'),
'utf-8', 'replace')
message = unicode(db.metaget(question, 'extended_description'),
'utf-8', 'replace')
except debconf.DebconfError:
pass
db.shutdown()
if title and message:
if self.frontend == 'gtk_ui':
cmd = ['zenity', '--error', '--title=%s' % title,
'--text=%s' % message]
subprocess.call(cmd)
elif self.frontend == 'kde_ui':
cmd = ['kdialog', '--title=%s' % title,
'--msgbox=%s' % message]
subprocess.call(cmd)
else:
# Not ideal, but if we cannot let the user know what's
# going on, it's best to drop them into a desktop and let
# them figure it out.
reboot = False
def kill_if_exists(pid, signum):
try:
os.kill(pid, signum)
except OSError, e:
if e.errno != errno.ESRCH:
raise
def sigalrm_handler(signum, frame):
kill_if_exists(wm.pid, signal.SIGKILL)
for extra in extras:
kill_if_exists(extra.pid, signal.SIGKILL)
kill_if_exists(wm.pid, signal.SIGTERM)
for extra in extras:
kill_if_exists(extra.pid, signal.SIGTERM)
if gconfd_running:
subprocess.call(['gconftool-2', '--shutdown'],
stdin=null, stdout=logfile, stderr=logfile,
preexec_fn=self.drop_privileges)
signal.signal(signal.SIGALRM, sigalrm_handler)
signal.alarm(1) # low patience with WMs failing to exit on demand
processes = set(extras)
processes.add(wm)
while processes:
done = set()
for process in processes:
try:
process.wait()
done.add(process)
except OSError, e:
if e.errno == errno.EINTR:
continue
raise
processes -= done
signal.alarm(0)
# Clear the console so we don't see boot-time messages on switch
try:
vthandle = open('/dev/tty' + self.vt[2:], 'r+')
subprocess.call(['clear'], stdin=vthandle, stdout=vthandle)
except IOError:
pass
kill_if_exists(server.pid, signal.SIGTERM)
server.wait()
if reboot:
subprocess.Popen(['reboot'])
if ret is not None and ret >= 0:
return ret
else:
return 1
if len(sys.argv) < 4:
sys.stderr.write('Usage: %s <vt[1-N]> <:[0-N]> <username> <program> '
'[<arguments>]\n' % sys.argv[0])
sys.exit(1)
vt, display, username = sys.argv[1:4]
try:
dm = DM(vt, display, username)
except XStartupError:
sys.exit(1)
ret = dm.run(*sys.argv[4:])
if ret == 0:
set_locale()
sys.exit(ret)
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