<?php
/**
 * General functions library
 *
 * @author		Roland Haeder <webmaster@ship-simu.org>
 * @version		3.0.0
 * @copyright	Copyright (c) 2009 Cracker Tracker Team
 * @license		GNU GPL 3.0 or any newer version
 * @link		http://www.ship-simu.org
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

if (!function_exists('implode_r')) {
	// Implode recursive a multi-dimension array, taken from www.php.net
	function implode_r ($glue, $array, $array_name = NULL) {
		$return = array();
		while(list($key,$value) = @each($array)) {
			if(is_array($value)) {
				// Is an array again, so call recursive
				$return[] = implode_r($glue, $value, (string) $key);
			} else {
				if($array_name != NULL) {
					$return[] = $array_name . '[' . (string) $key . ']=' . $value . "\n";
				} else {
					$return[] = $key . '=' . $value."\n";
				}
			}
		} // END - while

		// Return resulting array
		return(implode($glue, $return));
	} // END - function
} // END - if

if (!function_exists('implode_secure')) {
	// Implode a simple array with a 'call-back' to our escaper function
	function implode_secure ($array) {
		// Return string
		$return = '';

		// Implode all data
		foreach ($array as $entry) {
			// Don't escape some
			if (in_array($entry, array('NOW()'))) {
				// Add it with non-string glue
				$return .= $entry . ',';
			} elseif (empty($entry)) {
				// Empty strings need no escaping
				$return .= '"",';
			} else {
				// Secure this string and add it
				$return .= '"' . crackerTrackerEscapeString($entry) . '",';
			}
		} // END - foreach

		// Remove last char
		$return = substr($return, 0, -1);

		// Return this string
		return $return;
	} // END - function
} // END - if

// Getter for ctracker_debug
function isCrackerTrackerDebug () {
	// Is it set?
	return ((isset($GLOBALS['ctracker_debug'])) && ($GLOBALS['ctracker_debug'] === true));
}

// Determines the real remote address
function determineRealRemoteAddress () {
	// Is a proxy in use?
	if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
		// Proxy was used
		$address = $_SERVER['HTTP_X_FORWARDED_FOR'];
	} elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
		// Yet, another proxy
		$address = $_SERVER['HTTP_CLIENT_IP'];
	} else {
		// The regular address when no proxy was used
		$address = $_SERVER['REMOTE_ADDR'];
	}

	// This strips out the real address from proxy output
	if (strstr($address, ',')) {
		$addressArray = explode(',', $address);
		$address = $addressArray[0];
	} // END - if

	// Return the result
	return $address;
}

// Determine if a proxy was used
function isProxyUsed () {
	// Check if specific entries are set
	$proxyUsed = ((isset($_SERVER['HTTP_X_FORWARDED_FOR'])) || (isset($_SERVER['HTTP_CLIENT_IP'])));

	// Return result
	return $proxyUsed;
}

// [EOF]
?>