X-Git-Url: https://git.mxchange.org/?p=mailer.git;a=blobdiff_plain;f=inc%2Flibs%2Fsecurity_functions.php;h=7309965b5b7b80cd4675122411d3b927afa36333;hp=bb87b1ae36b0925ff1b26bb31d11bbabd5b2c2bd;hb=e995a896255f853ea731a602a6f4902878f16980;hpb=039203d5428c9c6a3bed61fb3a9a16958c6fd44c

diff --git a/inc/libs/security_functions.php b/inc/libs/security_functions.php
index bb87b1ae36..7309965b5b 100644
--- a/inc/libs/security_functions.php
+++ b/inc/libs/security_functions.php
@@ -18,6 +18,7 @@
  * svn:keywords Date Revision" (autoprobset!) at least!!!!!!            *
  * -------------------------------------------------------------------- *
  * 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 *
@@ -36,11 +37,11 @@
  * MA  02110-1301  USA                                                  *
  ************************************************************************/
 
-// Run only once this security check/exchange
+// Run only once this security check/replacement
 if (defined('__SECURITY')) return;
 
 // Some security stuff...
-if (ereg(basename(__FILE__), $_SERVER['PHP_SELF'])) {
+if (strpos($_SERVER['PHP_SELF'], basename(__FILE__)) !== false) {
 	die();
 } // END - if
 
@@ -68,6 +69,68 @@ function secureString ($str, $strip = true, $encode = false) {
 	return $str;
 }
 
+/**
+ * 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);
+}
+
+/**
+ * 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
+		$GLOBALS['php_caching'] = 'old';
+	}
+}
+
 // Runtime/GPC quoting is off now...
 set_magic_quotes_runtime(false);
 ini_set('magic_quotes_gpc', false); // This may not work on some systems
@@ -148,44 +211,11 @@ if (is_array($_GET)) {
 	} // END - foreach
 } // END - if
 
-// 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';
-}
+// Detect PHP caching
+detectPhpCaching();
 
 // At last secure the $_SERVER['PHP_SELF'] element
-$_SERVER['PHP_SELF'] = secureString($_SERVER['PHP_SELF']);
-
-// Split it up into path and filename
-$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 . '/' . $phpSelfFile;
-
-// Remove uneccessary variables
-unset($phpSelfDirectory);
-unset($phpSelfFile);
+securePhpSelf();
 
 // Security system loaded...
 define('__SECURITY', 1);