X-Git-Url: https://git.mxchange.org/?p=mailer.git;a=blobdiff_plain;f=0.2.1%2Finc%2Flibs%2Fsecurity_functions.php;h=73875e3bcb3d9258d69c80934a0cc5435116aac1;hp=09cf73d349a21de1a94c1dfe01aa7370db8c033b;hb=7bc25dd08431c94ce9edca131d56c1a36b13c28a;hpb=157ee010917df5ca07e6d31b42f67417b2516d74 diff --git a/0.2.1/inc/libs/security_functions.php b/0.2.1/inc/libs/security_functions.php index 09cf73d349..73875e3bcb 100644 --- a/0.2.1/inc/libs/security_functions.php +++ b/0.2.1/inc/libs/security_functions.php @@ -1,42 +1,42 @@ - array("{", "}", "/", ".", "'", "$", "(", ")", "{--", "--}", "%", ";", "[", "]", ":", "--"), - // ... and we will replace to. - 'to' => array( - "{OPEN_ANCHOR2}", - "{CLOSE_ANCHOR2}", - "{SLASH}", - "{DOT}", - "{QUOT}", - "{DOLLAR}", - "{OPEN_ANCHOR}", - "{CLOSE_ANCHOR}", - "{OPEN_TEMPLATE}", - "{CLOSE_TEMPLATE}", - "{PER}", - "{SEMI}", - "{OPEN_INDEX}", - "{CLOSE_INDEX}", - "{DBL_DOT}", - "{COMMENT}" - ), -); - -// Characters allowed in URLs -// -// Note: Do not replace 'to' with 'from' and vise-versa! When you do this all booked URLs will be -// rejected because of the {SLASH}, {DOT} and all below listed items inside the URL. -$URL_CHARS = array( - // Search for these secured characters - '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]); - } - - // 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[$seckey]); - } - else - { - // Only variables are allowed (non-array) but we secure them all! - foreach ($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"); - } -} - -// 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); - -// Security system loaded... -define('__SECURITY', "1"); - -// -?> + +// 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); + +// Unregister all global variables because of vultures and surpress failed attemps +@import_request_variables(''); + +// Error reporting level +@error_reporting(E_ALL | E_STRICT); + +// Check if important arrays are found and define them if missing +if (!isset($_SERVER)) +{ + global $_SERVER; + $_SERVER = $GLOBALS['_SERVER']; +} +if (!isset($_GET)) +{ + global $_GET; + $_GET = $GLOBALS['_GET']; +} +if (!isset($_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("{", "}", "/", ".", "'", "$", "(", ")", "{--", "--}", "%", ";", "[", "]", ":", "--"), + // ... and we will replace to. + 'to' => array( + "{OPEN_ANCHOR2}", + "{CLOSE_ANCHOR2}", + "{SLASH}", + "{DOT}", + "{QUOT}", + "{DOLLAR}", + "{OPEN_ANCHOR}", + "{CLOSE_ANCHOR}", + "{OPEN_TEMPLATE}", + "{CLOSE_TEMPLATE}", + "{PER}", + "{SEMI}", + "{OPEN_INDEX}", + "{CLOSE_INDEX}", + "{DBL_DOT}", + "{COMMENT}" + ), +); + +// Characters allowed in URLs +// +// Note: Do not replace 'to' with 'from' and vise-versa! When you do this all booked URLs will be +// rejected because of the {SLASH}, {DOT} and all below listed items inside the URL. +$URL_CHARS = array( + // Search for these secured characters + '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]); + } + + // 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[$seckey]); + } + else + { + // Only variables are allowed (non-array) but we secure them all! + foreach ($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"); + } +} + +// 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); + +// Security system loaded... +define('__SECURITY', "1"); + +// +?>