#!/usr/bin/perl -w
# 
# get-paper: script for retrieving scientific articles
# 
# Copyright (C) 2006, 2007 Hendrik Weimer
# 
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA

use strict;

use CGI qw (:standard);
use Net::SSH qw(ssh_cmd);

my $ssh_user = 'foo';
my $ssh_host = 'bar.example.com';

my $url = param("q");

local $SIG{'__DIE__'} = sub {
    die header . "Could not retrieve $url: $_[0]\n"
};

my $document = ssh_cmd("$ssh_user\@$ssh_host", $url);

die("Document is empty") if(!$document);

# workaround for broken Wget versions
    
$document = "Content-Type: application/pdf\n\n$document" 
    if($document !~ /^HTTP\/\d\.\d/); 

print $document;