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unix.php

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<?php
/* $Id: unix.php,v 1.3 2003/10/03 15:28:46 mikko Exp $ */
/*
 * ImaComm - a web based photo album software
 * Copyright (C) 2003, Mikko Kokkonen
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
function fs_find_executable($program)
{
        return fs_int_exec("which", $program, 0);
}

function fs_int_exec($program, $args, $return)
{
        $cmd = "$program ".escapeshellcmd($args);
        // Can we use exec?
        if (function_exists("exec") && strstr(ini_get("disable_functions"), "exec") === false)
        {
                $none = exec($cmd, $output, $ret);
                // If command was successful...
                return implode("\n", $output);
        }
        // No exec, use popen...
        elseif (function_exists("popen") && strstr(ini_get("disable_function"), "popen") === false)
        {
                $fp = popen($cmd, "r");
                while ($data = fread($fp, 2048))
                {
                        $buf .= $data;
                }
                pclose($fp);
                return $buf;
        }
        return "";
}
?>

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