X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=inc%2Flibs%2Fsecurity_functions.php;h=fa1679ab02bff27f40217711a067204871905276;hb=102d8ff4dc03d13ba12cc5181da83f48feb7a4d6;hp=190a369e5abebcde7f3e28004fbfb23aba3a7d41;hpb=8383fc52cd2340ea1756f9e1808fa3589e27c341;p=mailer.git diff --git a/inc/libs/security_functions.php b/inc/libs/security_functions.php index 190a369e5a..fa1679ab02 100644 --- a/inc/libs/security_functions.php +++ b/inc/libs/security_functions.php @@ -10,7 +10,12 @@ * -------------------------------------------------------------------- * * 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 * * For more information visit: http://www.mxchange.org * @@ -32,9 +37,8 @@ ************************************************************************/ // Some security stuff... -if (ereg(basename(__FILE__), $_SERVER['PHP_SELF'])) -{ - $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php"; +if (ereg(basename(__FILE__), $_SERVER['PHP_SELF'])) { + $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), '/inc') + 4) . '/security.php'; require($INC); } @@ -42,10 +46,17 @@ if (ereg(basename(__FILE__), $_SERVER['PHP_SELF'])) * 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)); +function secureString ($str, $strip=true) { + // Shall we strip HTML code? + if ($strip) $str = strip_tags($str); + + // Trim string + $str = trim($str); + + // Encode in entities $str = htmlentities($str, ENT_QUOTES); return $str; } @@ -53,50 +64,40 @@ function secureString ($str) { // Run only once this security check/exchange if (defined('__SECURITY')) return; -// Fatal messages goes here -global $FATAL; -$FATAL = array(); - -// Runtime quoting is off now... -set_magic_quotes_runtime(false); +// 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)) -{ + +if (!isset($_GET)) { global $_GET; $_GET = $GLOBALS['_GET']; } -if (!isset($_POST)) -{ + +if (!isset($_POST)) { global $_POST; $_POST = $GLOBALS['_POST']; } -if (!isset($_COOKIE)) -{ - global $_COOKIE; - $_COOKIE = $GLOBALS['_COOKIE']; -} // Include IP-Filter here //require("/usr/share/php/ipfilter.php"); // Generate arrays which holds the relevante chars to replace -global $SEC_CHARS, $URL_CHARS; -$SEC_CHARS = array( - // The chars we are looking for... - 'from' => array("{", "}", "/", ".", "'", "$", "(", ")", '{--', '--}', "%", ";", "[", "]", ":", "--"), - // ... and we will replace to. +$GLOBALS['security_chars'] = array( +// The chars we are looking for... + 'from' => array("{", "}", '/', '.', "'", "$", '(', ')', '{--', '--}', "%", ';', "[", "]", ':', "--"), +// ... and we will replace to. 'to' => array( "{OPEN_ANCHOR2}", "{CLOSE_ANCHOR2}", "{SLASH}", "{DOT}", - '{QUOT}', + "{QUOT}", "{DOLLAR}", "{OPEN_ANCHOR}", "{CLOSE_ANCHOR}", @@ -108,137 +109,98 @@ $SEC_CHARS = array( "{CLOSE_INDEX}", "{DBL_DOT}", "{COMMENT}" - ), -); - -// Characters allowed in URLs -// -// Note: Do not replace 'to' with 'from' and vise-versa! When you do this all booked URLs will be -// rejected because of the {SLASH}, {DOT} and all below listed items inside the URL. -$URL_CHARS = array( - // Search for these secured characters + ), + ); + + // Characters allowed in URLs + // + // 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. + $GLOBALS['url_chars'] = array( + // Search for these secured characters 'to' => array("{SLASH}", "{DOT}", "{PER}", "{DBL_DOT}", "{COMMENT}"), - // Replace with these characters - 'from' => array("/", ".", "%", ":", "--") -); - -// Overworked security part: -if (is_array($_GET)) { - 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]); + // Replace with these characters + 'from' => array('/', '.', "%", ':', "--") + ); + + // Overworked security part: + if (is_array($_GET)) { + foreach ($_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 ($GLOBALS['security_chars']['from'] as $key => $char) { + // Pass all through + $_GET[$seckey] = str_replace($char , $GLOBALS['security_chars']['to'][$key], $_GET[$seckey]); + } + + // Strip all other out + $_GET[$seckey] = strip_tags($_GET[$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]); + 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 ($GLOBALS['security_chars']['from'] as $key => $char) { + // Pass all through + $_POST[$seckey] = str_replace($char , $GLOBALS['security_chars']['to'][$key], $_POST[$seckey]); + } + + // Strip all other out + $_POST[$seckey] = strip_tags($_POST[$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[$seckey]); } - else - { - // Only variables are allowed (non-array) but we secure them all! - foreach ($SEC_CHARS['from'] as $key=>$char) - { - // Pass all through - $_COOKIE[$seckey] = str_replace($char , $SEC_CHARS['to'][$key], $_COOKIE[$seckey]); - } - // Strip all other out - $_COOKIE[$seckey] = strip_tags($_COOKIE[$seckey]); + // 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'); + } } - } -} -// 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(); + // 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); } - else - { - // Extension not loaded or required function is missing - define('_OB_CACHING', "404"); - } - } - else - { - // Old PHP version - define('_OB_CACHING', "old"); - } -} - -// 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; + // 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); + // Remove uneccessary variables + unset($SELF_DIR); + unset($SELF_FILE); -// Security system loaded... -define('__SECURITY', "1"); + // Security system loaded... + define('__SECURITY', '1'); -// -?> + // + ?>