#! @PERL@

# 
# Copyright 1999-2006 University of Chicago
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
# http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# 


use strict;
use warnings;

use Getopt::Long;
use English;
use File::Path;

my ($opt_help, $opt_force, $opt_nonroot, $target);
if(!GetOptions("help|h" => \$opt_help, 
               "force|f" => \$opt_force, 
               "nonroot|n" => \$opt_nonroot,
	       "out|o=s" => \$target))
{
    usage(1);
}

if(defined($opt_help))
{
    usage(0);
}

my $GLOBUS_LOCATION = '@prefix@';
if (exists $ENV{GLOBUS_LOCATION}) {
    $GLOBUS_LOCATION = $ENV{GLOBUS_LOCATION};
}

######################################################
my $sshftp = <<EOF;
#!/bin/sh

# 
# Copyright 1999-2006 University of Chicago
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
# http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# 

if [ -z "\$GLOBUS_LOCATION" ]; then
    GLOBUS_LOCATION=$GLOBUS_LOCATION
    export GLOBUS_LOCATION
fi

if [ -f \$GLOBUS_LOCATION/etc/globus-user-env.sh ]; then
    . \$GLOBUS_LOCATION/etc/globus-user-env.sh
elif [ -f \$GLOBUS_LOCATION/share/globus-user-env.sh ]; then
    . \$GLOBUS_LOCATION/share/globus-user-env.sh
elif [ -f \$GLOBUS_LOCATION/share/globus/globus-user-env.sh ]; then
    . \$GLOBUS_LOCATION/share/globus/globus-user-env.sh
fi

#export GLOBUS_TCP_PORT_RANGE=50000,50100

exec \$GLOBUS_LOCATION/sbin/globus-gridftp-server -ssh 
# -data-interface <interface to force data connections>
EOF

######################################################

umask(022);

if(!defined($target))
{
    if(defined($opt_nonroot))
    {
        mkdir "$ENV{HOME}/.globus" unless (-d "$ENV{HOME}/.globus");
        $target = "$ENV{HOME}/.globus/sshftp";
    }  
    else
    {
        mkdir "/etc/grid-security" unless (-d "/etc/grid-security");
        $target = "/etc/grid-security/sshftp"; 
    }
}

if(-e $target && !defined($opt_force))
{
    die("$target exists.  Use option --force to overwrite.\n");
}

open(FILE, "> $target") ||
    die("Error while trying to open $target. Check your permissions.\n");
print FILE $sshftp;
close(FILE);
chmod 0755, $target;
print "Successfully created $target.\n";

 
sub usage
{
    my $ex = shift;
    print "Usage: globus-gridftp-server-enable-sshftp [opts]\n".
          "opts: [-nonroot | -out <path>] [-force] [-help|-h]\n".
          "   Creates gridftp startup script used by sshftp clients.\n".
          "   Default location is /etc/grid-security/sshftp.\n".
          "   -nonroot creates ~/.globus/sshftp.\n";
    exit $ex;
}

