#!/bin/sh
#
#  Copyright (c) 2008 Gideon Romm <ltsp@symbio-technologies.com>
#
#  2008, Vagrant Cascadian <vagrant@freegeek.org>
#
#  This program is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License as
#  published by the Free Software Foundation; either version 2 of the
#  License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, you can find it on the World Wide
#  Web at http://www.gnu.org/copyleft/gpl.html, or write to the Free
#  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
#  MA 02110-1301, USA.
#

# xinit won't allow "--" to be used in the command line of the client:
#   xinit [ [ client ] options ... ] [ -- [ server ] [ display ] options ... ]
# Moreover, the lts.conf SCREEN_XX variables are usually formatted using a
# quoted shell-like syntax, and they require either eval or sourcing in order
# to be properly evaluated.
# For those reasons, screen.d scripts should pass a single argument to
# xinitrc, e.g.:
#   xinit /usr/share/ltsp/xinitrc "$* $LTS_OPTION1 $LTS_OPTION2"
# And that command will then be executed by xinitrc using eval.
# Note though that when xinitrc isn't present, screen scripts should use eval
# themselves instead (while losing the ability to pass "--" to programs), e.g.:
#   eval xinit "$* $LTS_OPTION1 $LTS_OPTION2"
# Quoting the parameters is necessary in both cases to avoid glob expansion.

. /usr/share/ltsp/ltsp-client-functions

XINITRCDIR=/usr/share/ltsp/xinitrc.d

COMMAND=$*

export COMMAND

# use run-parts to source every file in the xinitrc directory; we source
# instead of executing so that the variables and functions defined above
# are available to the scripts, and so that they can pass variables to each
# other
XINITRCFILES=$(run_parts_list $XINITRCDIR)
if [ -n "$XINITRCFILES" ]; then
  set +e
  for XINITRCFILE in $XINITRCFILES; do
    . $XINITRCFILE
  done
  set -e
fi

if boolean_is_true "$XINITRC_DAEMON"; then
    set +e
    # Make the arrow aa bit more presentable.  :)
    xsetroot -cursor_name top_left_arrow
    unset BREAK_LOOP
    while [ -z "$BREAK_LOOP" ]; do
        # Quotes prevent possible glob expansion before the eval call
        eval "$COMMAND"
        ret=$?
        if [ "$ret" != "0" ]; then
            if [ -z "$XINITRC_COMMAND_ON_ERROR" ]; then
                XINITRC_COMMAND_ON_ERROR="ldm-dialog --message \"An error has occured.\"" 
            fi
            if boolean_is_true "$XINITRC_PROMPT_ON_ERROR"; then
                for i in $XINITRC_ERROR_CODES; do
                    if [ "$i" = "$ret" ]; then
                        eval ${XINITRC_COMMAND_ON_ERROR} 2>/dev/null || true
                    fi
                done
            fi
        else
            if boolean_is_true "$XINITRC_PROMPT_ON_EXIT"; then
                ldm-dialog --question "Would you like to start this session?" 2>/dev/null || true
                [ "$?" != 0 ] && BREAK_LOOP=1
            fi
        fi
    done
    [ -n "$XINITRC_COMMAND_ON_EXIT" ] && eval ${XINITRC_COMMAND_ON_EXIT}
    set -e
else
    eval "exec $COMMAND"
fi