<?php
/************************************************************************
- * MXChange v0.2.1 Start: 09/20/2005 *
- * =============== Last change: 09/20/2005 *
+ * Mailer v0.2.1-FINAL Start: 09/20/2005 *
+ * =================== Last change: 09/20/2005 *
* *
* -------------------------------------------------------------------- *
* File : security_functions.php *
* -------------------------------------------------------------------- *
* Kurzbeschreibung : Alle GET, POST und COOKIE-Daten sichern *
* -------------------------------------------------------------------- *
- * *
+ * $Revision:: $ *
+ * $Date:: $ *
+ * $Tag:: 0.2.1-FINAL $ *
+ * $Author:: $ *
+ * Needs to be in all Files and every File needs "svn propset *
+ * svn:keywords Date Revision" (autoprobset!) at least!!!!!! *
* -------------------------------------------------------------------- *
- * Copyright (c) 2003 - 2008 by Roland Haeder *
+ * Copyright (c) 2003 - 2009 by Roland Haeder *
+ * Copyright (c) 2009, 2010 by Mailer Developer Team *
* For more information visit: http://www.mxchange.org *
* *
* This program is free software; you can redistribute it and/or modify *
* MA 02110-1301 USA *
************************************************************************/
+// Run only once this security check/replacement
+if (defined('__SECURITY')) return;
+
// Some security stuff...
-if (ereg(basename(__FILE__), $_SERVER['PHP_SELF']))
-{
- $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
- require($INC);
-}
+if (strpos($_SERVER['PHP_SELF'], basename(__FILE__)) !== false) {
+ die();
+} // END - if
/**
* Function to secure input strings
*
* @param $str The unsecured string
- * @return $str A (hopefully) secured string against HTML and other things
+ * @param $strip Strip tags
+ * @return $str A (hopefully) secured string against XSS and other bad things
*/
-function secureString ($str) {
- $str = trim(strip_tags($str));
- $str = htmlentities($str, ENT_QUOTES);
+function secureString ($str, $strip = true, $encode = false) {
+ // Shall we strip HTML code?
+ if ($strip === true) $str = strip_tags($str);
+
+ // Trim string
+ $str = trim($str);
+
+ // Encode in entities if requested
+ if ($encode === true) {
+ // Encode in entities (this breakes UTF-8!)
+ $str = htmlentities($str, ENT_QUOTES);
+ } // END - if
+
+ // Return result
return $str;
}
-// Run only once this security check/exchange
-if (defined('__SECURITY')) return;
+/**
+ * Secures $_SERVER['PHP_SELF'] against attacks
+ *
+ * @return void
+ */
+function securePhpSelf () {
+ // Did it run before?
+ if (isset($GLOBALS['php_self_secured'])) {
+ // Please do not call this twice!
+ die('PHP_SELF is already secured. Please do not call ' . __FUNCTION__ . ' for your self.');
+ } // END - if
+
+ // Secure the string
+ $_SERVER['PHP_SELF'] = secureString($_SERVER['PHP_SELF']);
+
+ // Split it up into path and filename
+ $phpSelfDirectory = dirname($_SERVER['PHP_SELF']);
+ $phpSelfFile = basename($_SERVER['PHP_SELF']);
+
+ // Check for a .php inside the $phpSelfDirectory...
+ while (ereg('.php', $phpSelfDirectory)) {
+ // Correct the dirname
+ $phpSelfDirectory = substr($phpSelfDirectory, 0, (strpos($phpSelfDirectory, '.php') + 4));
+ // Rewrite filename...
+ $phpSelfFile = basename($phpSelfDirectory);
+ // ... and dirname
+ $phpSelfDirectory = dirname($phpSelfDirectory);
+ } // END - while
+
+ // Put both together again and let's pray it is secured now...
+ $_SERVER['PHP_SELF'] = $phpSelfDirectory . '/' . $phpSelfFile;
+
+ // Did run...
+ $GLOBALS['php_self_secured'] = true;
+
+ // Remove uneccessary variables
+ unset($phpSelfDirectory);
+ unset($phpSelfFile);
+}
-// Fatal messages goes here
-global $FATAL;
-$FATAL = array();
+/**
+ * Detects caching in PHP
+ *
+ * @return void
+ */
+function detectPhpCaching () {
+ // Activate caching or transparent compressing when it is not already done
+ if (phpversion() >= '4.0.4pl1' && (strstr(getenv('HTTP_USER_AGENT'),'compatible') || (strstr(getenv('HTTP_USER_AGENT'), 'Mozilla')))) {
+ if ((extension_loaded('zlib')) && (function_exists('ob_start'))) {
+ // Start caching
+ $GLOBALS['php_caching'] = 'on';
+ ob_start();
+ } else {
+ // Extension not loaded or required function is missing
+ $GLOBALS['php_caching'] = '404';
+ }
+ } else {
+ // Old PHP version
+ $GLOBALS['php_caching'] = 'old';
+ }
+}
-// Runtime quoting is off now...
+// Runtime/GPC quoting is off now...
set_magic_quotes_runtime(false);
+ini_set('magic_quotes_gpc', false); // This may not work on some systems
// Check if important arrays are found and define them if missing
-if (!isset($_SERVER))
-{
+if (!isset($_SERVER)) {
global $_SERVER;
$_SERVER = $GLOBALS['_SERVER'];
-}
-if (!isset($_GET))
-{
+} // END - if
+
+if (!isset($_GET)) {
global $_GET;
$_GET = $GLOBALS['_GET'];
-}
-if (!isset($_POST))
-{
+} // END - if
+
+if (!isset($_POST)) {
global $_POST;
$_POST = $GLOBALS['_POST'];
-}
-if (!isset($_COOKIE))
-{
- global $_COOKIE;
- $_COOKIE = $GLOBALS['_COOKIE'];
-}
+} // END - if
// Include IP-Filter here
-//require("/usr/share/php/ipfilter.php");
+//include("/usr/share/php/ipfilter.php");
// Generate arrays which holds the relevante chars to replace
-global $SEC_CHARS, $URL_CHARS;
-$SEC_CHARS = array(
+$GLOBALS['security_chars'] = array(
// The chars we are looking for...
- 'from' => array("{", "}", "/", ".", "'", "$", "(", ")", '{--', '--}', "%", ";", "[", "]", ":", "--"),
+ 'from' => array('{', '}', '/', '.', "'", '$', '(', ')', '{--', '--}', '{?', '?}', '%', ';', '[', ']', ':', '--'),
// ... and we will replace to.
'to' => array(
- "{OPEN_ANCHOR2}",
- "{CLOSE_ANCHOR2}",
- "{SLASH}",
- "{DOT}",
+ '{OPEN_ANCHOR2}',
+ '{CLOSE_ANCHOR2}',
+ '{SLASH}',
+ '{DOT}',
'{QUOT}',
- "{DOLLAR}",
- "{OPEN_ANCHOR}",
- "{CLOSE_ANCHOR}",
- "{OPEN_TEMPLATE}",
- "{CLOSE_TEMPLATE}",
- "{PER}",
- "{SEMI}",
- "{OPEN_INDEX}",
- "{CLOSE_INDEX}",
- "{DBL_DOT}",
- "{COMMENT}"
+ '{DOLLAR}',
+ '{OPEN_ANCHOR}',
+ '{CLOSE_ANCHOR}',
+ '{OPEN_TEMPLATE}',
+ '{CLOSE_TEMPLATE}',
+ '{OPEN_CONFIG}',
+ '{CLOSE_CONFIG}',
+ '{PER}',
+ '{SEMI}',
+ '{OPEN_INDEX}',
+ '{CLOSE_INDEX}',
+ '{DBL_DOT}',
+ '{COMMENT}'
),
);
//
// Note: Do not replace 'to' with 'from' and vise-versa! When you do this all booked URLs will be
// rejected because of the {SLASH}, {DOT} and all below listed items inside the URL.
-$URL_CHARS = array(
+$GLOBALS['url_chars'] = array(
// Search for these secured characters
- 'to' => array("{SLASH}", "{DOT}", "{PER}", "{DBL_DOT}", "{COMMENT}"),
+ 'to' => array('{SLASH}', '{DOT}', '{PER}', '{DBL_DOT}', '{COMMENT}'),
// Replace with these characters
- 'from' => array("/", ".", "%", ":", "--")
+ 'from' => array('/', '.', '%', ':', '--')
);
// Overworked security part:
if (is_array($_GET)) {
- foreach ($_GET as $seckey=>$secvalue)
- {
- if (is_array($secvalue))
- {
+ foreach ($_GET as $seckey => $secvalue) {
+ if (is_array($secvalue)) {
// Throw arrays away...
unset($_GET[$seckey]);
- }
- else
- {
- // Only variables are allowed (non-array) but we secure them all!
- foreach ($SEC_CHARS['from'] as $key=>$char)
- {
- // Pass all through
- $_GET[$seckey] = str_replace($char , $SEC_CHARS['to'][$key], $_GET[$seckey]);
- }
-
- // Strip all other out
- $_GET[$seckey] = strip_tags($_GET[$seckey]);
- }
- }
-}
-
-if (basename($_SERVER['PHP_SELF']) != "install.php")
-{
- // And POST data
- foreach ($_POST as $seckey=>$secvalue)
- {
- if (!is_array($secvalue))
- {
- // Only variables are allowed (non-array) to be secured...
- foreach ($SEC_CHARS['from'] as $key=>$char)
- {
- // Pass all through
- $_POST[$seckey] = str_replace($char , $SEC_CHARS['to'][$key], $_POST[$seckey]);
- }
-
- // Strip all other out
- $_POST[$seckey] = strip_tags($_POST[$seckey]);
- }
- }
-
- // ... and finally cookies
- foreach ($_COOKIE as $seckey=>$secvalue)
- {
- if (is_array($secvalue))
- {
- // Throw arrays away...
- unset($_COOKIE[$seckey]);
- }
- else
- {
+ } else {
// Only variables are allowed (non-array) but we secure them all!
- foreach ($SEC_CHARS['from'] as $key=>$char)
- {
+ foreach ($GLOBALS['security_chars']['from'] as $key => $char) {
// Pass all through
- $_COOKIE[$seckey] = str_replace($char , $SEC_CHARS['to'][$key], $_COOKIE[$seckey]);
- }
+ $_GET[$seckey] = str_replace($char , $GLOBALS['security_chars']['to'][$key], $_GET[$seckey]);
+ } // END - foreach
// Strip all other out
- $_COOKIE[$seckey] = strip_tags($_COOKIE[$seckey]);
+ $_GET[$seckey] = secureString($_GET[$seckey]);
}
- }
-}
+ } // END - foreach
+} // END - if
-// Activate caching or transparent compressing when it is not already done
-if (!defined('_OB_CACHING'))
-{
- if (phpversion() >= '4.0.4pl1' && (strstr(getenv('HTTP_USER_AGENT'),'compatible') || (strstr(getenv('HTTP_USER_AGENT'), "Mozilla"))))
- {
- if ((extension_loaded('zlib')) && (function_exists('ob_start')))
- {
- // Start caching
- define('_OB_CACHING', "on");
- ob_start();
- }
- else
- {
- // Extension not loaded or required function is missing
- define('_OB_CACHING', "404");
- }
- }
- else
- {
- // Old PHP version
- define('_OB_CACHING', "old");
- }
-}
+// Detect PHP caching
+detectPhpCaching();
// At last secure the $_SERVER['PHP_SELF'] element
-$_SERVER['PHP_SELF'] = secureString($_SERVER['PHP_SELF']);
-
-// Split it up into path and filename
-$SELF_DIR = dirname($_SERVER['PHP_SELF']);
-$SELF_FILE = basename($_SERVER['PHP_SELF']);
-
-// Check for a .php inside the $SELF_DIR...
-while (ereg(".php", $SELF_DIR))
-{
- // Correct the dirname
- $SELF_DIR = substr($SELF_DIR, 0, (strpos($SELF_DIR, ".php") + 4));
- // Rewrite filename...
- $SELF_FILE = basename($SELF_DIR);
- // ... and dirname
- $SELF_DIR = dirname($SELF_DIR);
-}
-
-// Put both together again and let's pray it is secured now...
-$_SERVER['PHP_SELF'] = $SELF_DIR."/".$SELF_FILE;
-
-// Remove uneccessary variables
-unset($SELF_DIR);
-unset($SELF_FILE);
+securePhpSelf();
// Security system loaded...
-define('__SECURITY', "1");
+define('__SECURITY', 1);
-//
+// [EOF]
?>
projects / mailer.git / blobdiff