#!/bin/sh
# Copyright (C) 1994-2018 Altair Engineering, Inc.
# For more information, contact Altair at www.altair.com.
#
# This file is part of the PBS Professional ("PBS Pro") software.
#
# Open Source License Information:
#
# PBS Pro is free software. You can redistribute it and/or modify it under the
# terms of the GNU Affero General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# PBS Pro 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Commercial License Information:
#
# For a copy of the commercial license terms and conditions,
# go to: (http://www.pbspro.com/UserArea/agreement.html)
# or contact the Altair Legal Department.
#
# Altair’s dual-license business model allows companies, individuals, and
# organizations to create proprietary derivative works of PBS Pro and
# distribute them - whether embedded or bundled with other software -
# under a commercial license agreement.
#
# Use of Altair’s trademarks, including but not limited to "PBS™",
# "PBS Professional®", and "PBS Pro™" and Altair’s logos is subject to Altair's
# trademark licensing policies.
#

if [ $# -eq 1 ] && [ $1 = "--version" ]; then
   echo pbs_version = @PBS_VERSION@
   exit 0
fi

# pbs_remsh might be called in a non-PBS environment causing
# PBS_JOBID and PBS_RSHCOMMAND to not exist. The fix is to pass
# the values to these as arguments to pbs_remsh.

if [ $# -lt 2 ]; then
        echo "Usage: $0 --version"
        echo "Usage: $0 [-j jobid] [-r rshcmd] host [-n] [-l username] command"
        exit 1;
fi

jobid=""
rshcmd=""
while [ $# -gt 1 ]; do
        if [ "XX$1" = "XX-j" ]; then
                shift;
                jobid=$1
                shift;
        elif [ "XX$1" = "XX-r" ]; then
                shift;
                rshcmd=$1
                shift;
        else
                break;
        fi
done

host="$1"
shift

while [ $# -gt 1 ]; do
	if [ "XX$1" = "XX-n" ]; then
		shift;
	elif [ "XX$1" = "XX-l" ]; then
		shift;
		shift;
	else
		break;
	fi
done

if [ ! -z "$jobid" ] ; then
        export PBS_JOBID=$jobid
fi

if [ ! -z "$rshcmd" ] ; then
        export PBS_RSHCOMMAND=$rshcmd
fi

remsh="${PBS_RSHCOMMAND:-rsh} -n"
$remsh "$host" pbs_attach -j "$PBS_JOBID" $*
