debian/lightdm.postinst

   1 #!/bin/sh
   2
   3 set -e
   4
   5 if dpkg-maintscript-helper supports mv_conffile; then
   6   dpkg-maintscript-helper mv_conffile \
   7     /etc/lightdm.conf \
   8     /etc/lightdm/lightdm.conf \
   9     0.3.7-0ubuntu2 -- "$@"
  10 fi
  11
  12 . /usr/share/debconf/confmodule
  13
  14 THIS_PACKAGE=lightdm
  15 DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
  16
  17 # creating lightdm group if he isn't already there
  18 if ! getent group lightdm >/dev/null; then
  19         addgroup --system lightdm
  20 fi
  21
  22 # creating lightdm user if he isn't already there
  23 if ! getent passwd lightdm >/dev/null; then
  24         adduser --system --ingroup lightdm --home /var/lib/lightdm lightdm
  25         usermod -c "Light Display Manager" lightdm
  26         usermod -d "/var/lib/lightdm"      lightdm
  27         usermod -g "lightdm"               lightdm
  28         usermod -s "/bin/false"            lightdm
  29 fi
  30
  31 # Creating nopasswdlogin group if he isn't already there.
  32 # That enables the password-less login feature in the users-admin
  33 # tool of the gnome-system-tools for users that belong to it,
  34 # and which is working thanks to LightDM's PAM policy.
  35 if ! getent group nopasswdlogin >/dev/null; then
  36         addgroup --system nopasswdlogin
  37 fi
  38
  39 if [ -d /var/lib/lightdm ]; then
  40   chown -R lightdm:lightdm /var/lib/lightdm || true
  41   chmod 0750 /var/lib/lightdm
  42 fi
  43
  44 # debconf is not a registry, so we only fiddle with the default file if it
  45 # does not exist
  46 if ! [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
  47   DEFAULT_DISPLAY_MANAGER=
  48   if db_get shared/default-x-display-manager; then
  49     DEFAULT_DISPLAY_MANAGER="$RET"
  50   fi
  51   if [ -n "$DEFAULT_DISPLAY_MANAGER" ]; then
  52     DAEMON_NAME=
  53     if db_get "$DEFAULT_DISPLAY_MANAGER"/daemon_name; then
  54       DAEMON_NAME="$RET"
  55     fi
  56     if [ -z "$DAEMON_NAME" ]; then
  57       # if we were unable to determine the name of the selected daemon (for
  58       # instance, if the selected default display manager doesn't provide a
  59       # daemon_name question), guess
  60       DAEMON_NAME=$(which "$DEFAULT_DISPLAY_MANAGER" 2>/dev/null)
  61     fi
  62     if [ -n "$DAEMON_NAME" ]; then
  63       echo "$DAEMON_NAME" > "$DEFAULT_DISPLAY_MANAGER_FILE"
  64     fi
  65   fi
  66 fi
  67
  68 # Registering the init scripts or starting the daemon may cause output to
  69 # stdout, which can confuse debconf.
  70 db_stop
  71
  72 case "$1" in
  73     configure)
  74         # LP: #1189948
  75         if dpkg --compare-versions "$2" lt "1.7.0-0ubuntu6" ; then
  76             if [ -f /etc/apparmor.d/abstractions/lightdm ]; then
  77                 chmod 0644 /etc/apparmor.d/abstractions/lightdm || true
  78             fi
  79             if [ -f /etc/apparmor.d/abstractions/lightdm_chromium-browser ]; then
  80                 chmod 0644 /etc/apparmor.d/abstractions/lightdm_chromium-browser || true
  81             fi
  82         fi
  83
  84         # set default-display-manager systemd service link according to our config
  85         if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" -a -d /etc/systemd/system/ ]; then
  86             SERVICE=/lib/systemd/system/$(basename $(cat "$DEFAULT_DISPLAY_MANAGER_FILE")).service
  87             if [ -e "$SERVICE" ]; then
  88                 ln -sf "$SERVICE" /etc/systemd/system/display-manager.service
  89             else
  90                 echo "ERROR: $SERVICE is the selected default display manager but does not exist" >&2
  91             fi
  92         fi
  93         ;;
  94 esac
  95
  96 #DEBHELPER#
  97
  98 exit 0