#!/bin/bash
#
# Copyright (c) 2004-2006 SuSE
# Author: Stanislav Brabec <sbrabec@suse.cz>

type -p cmp  &> /dev/null || {
    echo "${0##*/}: No cmp  in PATH ... skipping"
    exit 0
}

r=$ROOT
DISPLAYMANAGER_PASSWORD_LESS_LOGIN="no"
test -f $r/etc/sysconfig/displaymanager || {
    echo "${0##*/}: No $r/etc/sysconfig/displaymanager found."
    exit 1
}
. $r/etc/sysconfig/displaymanager

# Password-less login is implemented by PAM. Do the required change.
if [ "$DISPLAYMANAGER_PASSWORD_LESS_LOGIN" = "yes" ] ; then
    sed 's/^\(auth[[:space:]][[:space:]]*\)include[[:space:]]\([[:space:]]*\)common-auth/\1required\2pam_permit.so/' <$r/etc/pam.d/gdm >$r/etc/pam.d/gdm.new
else
    sed 's/^\(auth[[:space:]][[:space:]]*\)required\([[:space:]][[:space:]]*\)pam_permit\.so/\1include \2common-auth/' <$r/etc/pam.d/gdm >$r/etc/pam.d/gdm.new
fi
if cmp -s $r/etc/pam.d/gdm $r/etc/pam.d/gdm.new ; then
    rm $r/etc/pam.d/gdm.new
else
    mv $r/etc/pam.d/gdm.new $r/etc/pam.d/gdm
fi