#!/bin/sh
# Debian x11-common package post-installation script
# Copyright 1998--2001, 2003 Branden Robinson.
# Licensed under the GNU General Public License, version 2.  See the file
# /usr/share/common-licenses/GPL or <http://www.gnu.org/copyleft/gpl.txt>.
# Acknowlegements to Stephen Early, Mark Eichin, and Manoj Srivastava.

set -e

. /usr/share/debconf/confmodule

THIS_PACKAGE=x11-common
THIS_SCRIPT=postinst
CONFIG_DIR=/etc/X11
XWRAPPER_CONFIG="$CONFIG_DIR/Xwrapper.config"
CONFIG_AUX_DIR=/var/lib/x11
XWRAPPER_CONFIG_CHECKSUM_BASE="${XWRAPPER_CONFIG##*/}.md5sum"
XWRAPPER_CONFIG_CHECKSUM="$CONFIG_AUX_DIR/$XWRAPPER_CONFIG_CHECKSUM_BASE"
XWRAPPER_CONFIG_ROSTER_BASE="${XWRAPPER_CONFIG##*/}.roster"
XWRAPPER_CONFIG_ROSTER="$CONFIG_AUX_DIR/$XWRAPPER_CONFIG_ROSTER_BASE"

#INCLUDE_SHELL_LIB#

case "$1" in
configure)
  if dpkg --compare-versions "$2" lt-nl "1:7.6+7ubuntu1"; then
    remove_conffile_commit "/etc/gdm/failsafe-xorg.conf"
    remove_conffile_commit "/etc/gdm/failsafeBlacklist"
    remove_conffile_commit "/etc/gdm/failsafeDexconf"
    remove_conffile_commit "/etc/gdm/failsafeDexconf.old"
    remove_conffile_commit "/etc/gdm/failsafeHelpmsg"
    remove_conffile_commit "/etc/gdm/failsafeInstall"
    remove_conffile_commit "/etc/gdm/failsafeXServer"
    remove_conffile_commit "/etc/gdm/failsafeXinit"
  fi
  if dpkg --compare-versions "$2" lt-nl "1:7.6+7ubuntu7"; then
    remove_conffile_commit "/etc/init/failsafe-x.conf"
  fi
esac

# only mess with config file it exists; otherwise, assume that's the way the
# user wants it, but only if upgrading
if [ -e "$XWRAPPER_CONFIG" ] || [ -z "$UPGRADE" ]; then
  ALLOWED_USERS=
  if db_get x11-common/xwrapper/actual_allowed_users; then
    ALLOWED_USERS="$RET"
  fi
  if [ -n "$ALLOWED_USERS" ]; then
    NEW_XWRAPPER_CONFIG=$(tempfile -m 644)
    if ! [ -e "$XWRAPPER_CONFIG" ]; then
      cat >>"$NEW_XWRAPPER_CONFIG" << EOF
# Xwrapper.config (Debian X Window System server wrapper configuration file)
#
# This file was generated by the post-installation script of the x11-common
# package using values from the debconf database.
#
# See the Xwrapper.config(5) manual page for more information.
#
# This file is automatically updated on upgrades of the x11-common package
# *only* if it has not been modified since the last upgrade of that package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command as root:
#   dpkg-reconfigure x11-common
allowed_users=$ALLOWED_USERS
EOF
    else
      sed -e '/^allowed_users.*/d' < "$XWRAPPER_CONFIG" > "$NEW_XWRAPPER_CONFIG"
      echo "allowed_users=$ALLOWED_USERS" >> "$NEW_XWRAPPER_CONFIG"
    fi
    if ! cmp -s "$XWRAPPER_CONFIG" "$NEW_XWRAPPER_CONFIG"; then
      cp "$NEW_XWRAPPER_CONFIG" "$XWRAPPER_CONFIG.dpkg-new"
      mv "$XWRAPPER_CONFIG.dpkg-new" "$XWRAPPER_CONFIG"
    fi
    rm -f "$NEW_XWRAPPER_CONFIG"
  else
    observe "not updating $XWRAPPER_CONFIG; problems communicating" \
      "with debconf database"
  fi
else
  observe "not updating $XWRAPPER_CONFIG; file does not exist"
fi

# get rid of obsolete X server wrapper config roster and checksum
if dpkg --compare-versions "$2" lt-nl 1:7.6~3; then
  rm -f "$XWRAPPER_CONFIG_ROSTER"
  rm -f "$XWRAPPER_CONFIG_CHECKSUM"
  rmdir "$CONFIG_AUX_DIR" 2>/dev/null || :
fi

if dpkg --compare-versions "$2" lt-nl 1:7.4+2; then
  db_unregister x11-common/xwrapper/nice_value || :
  db_unregister x11-common/xwrapper/nice_value/error || :
  db_unregister x11-common/upgrade_issues || :
  db_unregister x11-common/x11r6_bin_not_empty || :
fi

#DEBHELPER#

exit 0

# vim:set ai et sts=2 sw=2 tw=80: