#!/bin/sh
# postinst script for debathena-cluster-login-config
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package


#DEBHELPER#

package=debathena-cluster-login-config
ours=.debathena
theirs=.debathena-orig

undivert_unlink_symlink()
{
    file="$1"
    ourfile="$2"
    theirfile="$3"
    if [ ! -L "$file" ] || \
        [ "$(readlink "$file")" != "$(basename "$ourfile")" -a \
          "$(readlink "$file")" != "$(basename "$theirfile")" ]; then
        echo "*** OMINOUS WARNING ***: $file is not linked to either $(basename "$ourfile") or $(basename "$theirfile")" >&2
    else
        rm -f "$file"
    fi
}

undivert_unlink_divert()
{
    file="$1"
    if [ ! -L "$file" ] && [ ! -e "$file" ]; then
        dpkg-divert --remove --rename --package "$package" "$file"
    else
        echo "Not removing diversion of $file by $package" >&2
    fi
}

undivert_unlink()
{
    prefix=$1
    suffix=$2

    file=$prefix$suffix
    ourfile=$prefix$ours$suffix
    theirfile=$prefix$theirs$suffix

    undivert_unlink_symlink "$file" "$ourfile" "$theirfile"
    undivert_unlink_divert "$file" "$package"
}

cleanup_old_diversion() {
    file="$1"
    if dpkg-divert --list "${file}" | grep -Fxq "diversion of ${file} to ${file}${theirs} by ${package}"; then
        undivert_unlink "$file"
    fi
}

rm_conffile() {
    local PKGNAME="$1" # Unused
    local CONFFILE="$2"
    if [ -f "$CONFFILE".dpkg-del ]; then
        rm -f "$CONFFILE".dpkg-del
    fi
}

case "$1" in
    configure)
	gdm_version="$(dpkg-query -W -f '${Version}' gdm)"
	if dpkg --compare-versions "$gdm_version" ge '2.25.2~'; then
	    cleanup_old_diversion /etc/gdm/gdm.conf.debathena
	    cleanup_old_diversion /etc/gdm/gdm.conf-custom.debathena
	fi

        if dpkg --compare-versions "$2" lt 1.24~; then
            rm_conffile debathena-cluster-login-config "/etc/event.d/ttymsg"
            rm_conffile debathena-cluster-login-config "/etc/init/ttymsg.conf"
        fi

	# Shut down sshd and reload gdm.
	if hash invoke-rc.d; then
	    invoke-rc.d ssh stop
            invoke-rc.d gdm reload || true
	else
	    /etc/init.d/ssh stop
            /etc/init.d/gdm reload || true
	fi

        # Make sure the gettys are running
        initctl stop ttymsg >/dev/null 2>&1 || true
        for i in $(seq 1 6); do
            initctl stop "tty$i" >/dev/null 2>&1 || true
            initctl start "tty$i" >/dev/null 2>&1 || true
        done

	# Configure dns-nameservers if they're not there
	if ! egrep -q '^[[:space:]]+dns-nameservers' /etc/network/interfaces; then
	    echo '  dns-nameservers 18.70.0.160 18.71.0.151 18.72.0.3' >>/etc/network/interfaces
	    /usr/share/update-notifier/notify-reboot-required
	fi

	# Attempt to initially set the root password.
	/usr/sbin/athena-root-password

	# Set mandatory gconf key values.
	gcsrc=xml:readwrite:/etc/gconf/gconf.xml.mandatory
	gc="gconftool-2 --direct --config-source=$gcsrc --set"
	gcunset="gconftool-2 --direct --config-source=$gcsrc --unset"

	# gnome-screensaver
	$gc -t bool /apps/gnome-screensaver/logout_enabled true
	$gc -t int /apps/gnome-screensaver/logout_delay 20
	$gc -t string /apps/gnome-screensaver/logout_command \
	    "/usr/bin/gnome-session-save --force-logout"
	# KLUDGE: gnome-screensaver can overwrite its internal
	# logout_command setting with the embedded_keyboard_command
	# value (http://bugzilla.gnome.org/show_bug.cgi?id=573495).
	# So work around the problem by setting the latter to the same
	# value as the former.  This should be removed after the bug
	# has been fixed.  Also disable the embedded_keyboard to ensure
	# that this value is not used otherwise.
	$gc -t string /apps/gnome-screensaver/embedded_keyboard_command \
	    "/usr/bin/gnome-session-save --force-logout"
	$gc -t bool /apps/gnome-screensaver/embedded_keyboard_enabled false
	$gc -t bool /apps/gnome-screensaver/user_switch_enabled false
	$gc -t bool /apps/gnome-screensaver/lock_enabled true
	$gc -t int /apps/gnome-screensaver/lock_delay 1

	# fast-user-switch-applet
	$gc -t bool /apps/fast-user-switch-applet/show_active_users_only true
	$gc -t bool /apps/fast-user-switch-applet/show_guest_login false

	# gnome-power-manager
	$gc -t bool /apps/gnome-power-manager/general/can_hibernate false
	$gc -t bool /apps/gnome-power-manager/general/can_suspend false

	# We set this true in earlier versions, before settings were
	# undone in the prerm script, but we want it unset now.
	$gcunset /desktop/gnome/lockdown/disable_user_switching

	# Set up gconf defaults.
	gcsrc=xml:readwrite:/etc/gconf/gconf.xml.defaults
	gc="gconftool-2 --direct --config-source=$gcsrc --set"
	$gc -t string \
	    /desktop/gnome/session/required_components/windowmanager \
	    "metacity"

        cat >>/etc/sudoers <<EOF
### BEGIN debathena-cluster-login-config
ALL !ALL=!ALL
%admin ALL=(ALL) ALL
### END debathena-cluster-login-config
EOF

	exit 0
    ;;

    abort-upgrade|abort-remove|abort-deconfigure)
    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac