# common code to ltsp x screen scripts

# Copyright (c) 2002 by James A. McQuillan (McQuillan Systems, LLC)
# Copyright (c) 2008 by Warren Togami      (Red Hat, Inc.)
# Copyright (c) 2008 by Vagrant Cascadian
#
# This software is licensed under the GNU General Public License version 2,
# the full text of which can be found in the COPYING file.

# Copyright 2005, Canonical Ltd.
#
# 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, 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.

#
# Load ltsp config defaults
#

. /usr/share/ltsp/ltsp_config

# Source ltsp-client-functions if we have not already (needed in some functions)
(PATH="" boolean_is_true True 2>/dev/null) || . /usr/share/ltsp/ltsp-client-functions || true

#
# Compute tty and display
#

TTY=$(tty)
TTY=${TTY#/dev/tty}
DISPLAY=":$TTY"
# set DISP for backwards compatibility with older screen scripts
DISP="$DISPLAY"

error_delay() {
    echo -n -e "\n\rERROR: $1"
    read CMD
}

# XFS handling
# implemented as a function so it could be called on sucessive tries

get_xfs_settings() {
    # set default font path
    # use XFS_SERVER if defined, otherwise
    # attempt to use servers passed on commandline

    if boolean_is_true "$USE_XFS" ; then
        if [ -z "$XFS_SERVER" ]; then
            # attempt to use other servers
            for SRV in $@ ; do
                XFS_SERVER="$XFS_SERVER $SRV"
            done
        fi
        for SRV in $XFS_SERVER ; do
            xfs_line="tcp/${SRV}:7100"
            if [ -z "$(echo $X_ARGS | grep $xfs_line)" ]; then
                if nc -z -w 5 $SRV 7100 >/dev/null ; then
                    X_ARGS="$X_ARGS -fp $xfs_line"
                fi
            fi
        done
    fi
}

# Implemented as a function so it can be called within X screen scripts 
# as needed
run_xk_scripts() {
    # Run files prefixed with XK* in /usr/share/ltsp/screen-session.d/
    if [ -d "/usr/share/ltsp/screen-session.d/" ]; then
        for script in $(run_parts_list /usr/share/ltsp/screen-session.d/ XK); do
            . $script
        done
    fi
}

# Run files prefixed with XS* in /usr/share/ltsp/screen-session.d/
if [ -d "/usr/share/ltsp/screen-session.d/" ]; then
    for script in $(run_parts_list /usr/share/ltsp/screen-session.d/ XS); do
        . $script
    done
fi