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							- <?php
 
- declare(strict_types=1);
 
- namespace PhpMyAdmin;
 
- use PhpMyAdmin\Http\ServerRequest;
 
- use Symfony\Component\Config\FileLocator;
 
- use Symfony\Component\DependencyInjection\ContainerBuilder;
 
- use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
 
- use function __;
 
- use function array_keys;
 
- use function array_pop;
 
- use function array_walk_recursive;
 
- use function chr;
 
- use function count;
 
- use function defined;
 
- use function explode;
 
- use function filter_var;
 
- use function function_exists;
 
- use function getenv;
 
- use function gmdate;
 
- use function hash_equals;
 
- use function hash_hmac;
 
- use function header;
 
- use function header_remove;
 
- use function htmlspecialchars;
 
- use function http_build_query;
 
- use function in_array;
 
- use function intval;
 
- use function is_array;
 
- use function is_string;
 
- use function json_decode;
 
- use function json_encode;
 
- use function mb_strlen;
 
- use function mb_strpos;
 
- use function mb_substr;
 
- use function parse_str;
 
- use function parse_url;
 
- use function preg_match;
 
- use function preg_replace;
 
- use function session_write_close;
 
- use function sprintf;
 
- use function str_replace;
 
- use function strlen;
 
- use function strpos;
 
- use function strtolower;
 
- use function strtr;
 
- use function substr;
 
- use function trigger_error;
 
- use function unserialize;
 
- use function urldecode;
 
- use function vsprintf;
 
- use const DATE_RFC1123;
 
- use const E_USER_ERROR;
 
- use const E_USER_WARNING;
 
- use const FILTER_VALIDATE_IP;
 
- /**
 
-  * Core functions used all over the scripts.
 
-  */
 
- class Core
 
- {
 
-     /**
 
-      * Removes insecure parts in a path; used before include() or
 
-      * require() when a part of the path comes from an insecure source
 
-      * like a cookie or form.
 
-      *
 
-      * @param string $path The path to check
 
-      */
 
-     public static function securePath(string $path): string
 
-     {
 
-         // change .. to .
 
-         return (string) preg_replace('@\.\.*@', '.', $path);
 
-     }
 
-     /**
 
-      * displays the given error message on phpMyAdmin error page in foreign language,
 
-      * ends script execution and closes session
 
-      *
 
-      * loads language file if not loaded already
 
-      *
 
-      * @param string       $error_message the error message or named error message
 
-      * @param string|array $message_args  arguments applied to $error_message
 
-      */
 
-     public static function fatalError(
 
-         string $error_message,
 
-         $message_args = null
 
-     ): void {
 
-         global $dbi;
 
-         /* Use format string if applicable */
 
-         if (is_string($message_args)) {
 
-             $error_message = sprintf($error_message, $message_args);
 
-         } elseif (is_array($message_args)) {
 
-             $error_message = vsprintf($error_message, $message_args);
 
-         }
 
-         /*
 
-          * Avoid using Response class as config does not have to be loaded yet
 
-          * (this can happen on early fatal error)
 
-          */
 
-         if (
 
-             isset($dbi, $GLOBALS['config'])
 
-             && $GLOBALS['config']->get('is_setup') === false
 
-             && ResponseRenderer::getInstance()->isAjax()
 
-         ) {
 
-             $response = ResponseRenderer::getInstance();
 
-             $response->setRequestStatus(false);
 
-             $response->addJSON('message', Message::error($error_message));
 
-             if (! defined('TESTSUITE')) {
 
-                 exit;
 
-             }
 
-             return;
 
-         }
 
-         if (! empty($_REQUEST['ajax_request'])) {
 
-             // Generate JSON manually
 
-             self::headerJSON();
 
-             echo json_encode(
 
-                 [
 
-                     'success' => false,
 
-                     'message' => Message::error($error_message)->getDisplay(),
 
-                 ]
 
-             );
 
-             if (! defined('TESTSUITE')) {
 
-                 exit;
 
-             }
 
-             return;
 
-         }
 
-         $error_message = strtr($error_message, ['<br>' => '[br]']);
 
-         $template = new Template();
 
-         echo $template->render('error/generic', [
 
-             'lang' => $GLOBALS['lang'] ?? 'en',
 
-             'dir' => $GLOBALS['text_dir'] ?? 'ltr',
 
-             'error_message' => Sanitize::sanitizeMessage($error_message),
 
-         ]);
 
-         if (! defined('TESTSUITE')) {
 
-             exit;
 
-         }
 
-     }
 
-     /**
 
-      * Returns a link to the PHP documentation
 
-      *
 
-      * @param string $target anchor in documentation
 
-      *
 
-      * @return string  the URL
 
-      */
 
-     public static function getPHPDocLink(string $target): string
 
-     {
 
-         /* List of PHP documentation translations */
 
-         $php_doc_languages = [
 
-             'pt_BR',
 
-             'zh_CN',
 
-             'fr',
 
-             'de',
 
-             'ja',
 
-             'ru',
 
-             'es',
 
-             'tr',
 
-         ];
 
-         $lang = 'en';
 
-         if (isset($GLOBALS['lang']) && in_array($GLOBALS['lang'], $php_doc_languages)) {
 
-             if ($GLOBALS['lang'] === 'zh_CN') {
 
-                 $lang = 'zh';
 
-             } else {
 
-                 $lang = $GLOBALS['lang'];
 
-             }
 
-         }
 
-         return self::linkURL('https://www.php.net/manual/' . $lang . '/' . $target);
 
-     }
 
-     /**
 
-      * Warn or fail on missing extension.
 
-      *
 
-      * @param string $extension Extension name
 
-      * @param bool   $fatal     Whether the error is fatal.
 
-      * @param string $extra     Extra string to append to message.
 
-      */
 
-     public static function warnMissingExtension(
 
-         string $extension,
 
-         bool $fatal = false,
 
-         string $extra = ''
 
-     ): void {
 
-         global $errorHandler;
 
-         $message = 'The %s extension is missing. Please check your PHP configuration.';
 
-         /* Gettext does not have to be loaded yet here */
 
-         if (function_exists('__')) {
 
-             $message = __('The %s extension is missing. Please check your PHP configuration.');
 
-         }
 
-         $doclink = self::getPHPDocLink('book.' . $extension . '.php');
 
-         $message = sprintf($message, '[a@' . $doclink . '@Documentation][em]' . $extension . '[/em][/a]');
 
-         if ($extra != '') {
 
-             $message .= ' ' . $extra;
 
-         }
 
-         if ($fatal) {
 
-             self::fatalError($message);
 
-             return;
 
-         }
 
-         $errorHandler->addError($message, E_USER_WARNING, '', 0, false);
 
-     }
 
-     /**
 
-      * returns count of tables in given db
 
-      *
 
-      * @param string $db database to count tables for
 
-      *
 
-      * @return int count of tables in $db
 
-      */
 
-     public static function getTableCount(string $db): int
 
-     {
 
-         global $dbi;
 
-         $tables = $dbi->tryQuery('SHOW TABLES FROM ' . Util::backquote($db) . ';');
 
-         if ($tables) {
 
-             return $tables->numRows();
 
-         }
 
-         return 0;
 
-     }
 
-     /**
 
-      * Converts numbers like 10M into bytes
 
-      * Used with permission from Moodle (https://moodle.org) by Martin Dougiamas
 
-      * (renamed with PMA prefix to avoid double definition when embedded
 
-      * in Moodle)
 
-      *
 
-      * @param string|int $size size (Default = 0)
 
-      */
 
-     public static function getRealSize($size = 0): int
 
-     {
 
-         if (! $size) {
 
-             return 0;
 
-         }
 
-         $binaryprefixes = [
 
-             'T' => 1099511627776,
 
-             't' => 1099511627776,
 
-             'G' => 1073741824,
 
-             'g' => 1073741824,
 
-             'M' => 1048576,
 
-             'm' => 1048576,
 
-             'K' => 1024,
 
-             'k' => 1024,
 
-         ];
 
-         if (preg_match('/^([0-9]+)([KMGT])/i', (string) $size, $matches)) {
 
-             return (int) ($matches[1] * $binaryprefixes[$matches[2]]);
 
-         }
 
-         return (int) $size;
 
-     }
 
-     /**
 
-      * Checks given $page against given $allowList and returns true if valid
 
-      * it optionally ignores query parameters in $page (script.php?ignored)
 
-      *
 
-      * @param string $page      page to check
 
-      * @param array  $allowList allow list to check page against
 
-      * @param bool   $include   whether the page is going to be included
 
-      */
 
-     public static function checkPageValidity(&$page, array $allowList = [], $include = false): bool
 
-     {
 
-         if (empty($allowList)) {
 
-             $allowList = ['index.php'];
 
-         }
 
-         if (empty($page)) {
 
-             return false;
 
-         }
 
-         if (in_array($page, $allowList)) {
 
-             return true;
 
-         }
 
-         if ($include) {
 
-             return false;
 
-         }
 
-         $_page = mb_substr(
 
-             $page,
 
-             0,
 
-             (int) mb_strpos($page . '?', '?')
 
-         );
 
-         if (in_array($_page, $allowList)) {
 
-             return true;
 
-         }
 
-         $_page = urldecode($page);
 
-         $_page = mb_substr(
 
-             $_page,
 
-             0,
 
-             (int) mb_strpos($_page . '?', '?')
 
-         );
 
-         return in_array($_page, $allowList);
 
-     }
 
-     /**
 
-      * tries to find the value for the given environment variable name
 
-      *
 
-      * searches in $_SERVER, $_ENV then tries getenv() and apache_getenv()
 
-      * in this order
 
-      *
 
-      * @param string $var_name variable name
 
-      *
 
-      * @return string  value of $var or empty string
 
-      */
 
-     public static function getenv(string $var_name): string
 
-     {
 
-         if (isset($_SERVER[$var_name])) {
 
-             return (string) $_SERVER[$var_name];
 
-         }
 
-         if (isset($_ENV[$var_name])) {
 
-             return (string) $_ENV[$var_name];
 
-         }
 
-         if (getenv($var_name)) {
 
-             return (string) getenv($var_name);
 
-         }
 
-         if (function_exists('apache_getenv') && apache_getenv($var_name, true)) {
 
-             return (string) apache_getenv($var_name, true);
 
-         }
 
-         return '';
 
-     }
 
-     /**
 
-      * Send HTTP header, taking IIS limits into account (600 seems ok)
 
-      *
 
-      * @param string $uri         the header to send
 
-      * @param bool   $use_refresh whether to use Refresh: header when running on IIS
 
-      */
 
-     public static function sendHeaderLocation(string $uri, bool $use_refresh = false): void
 
-     {
 
-         if ($GLOBALS['config']->get('PMA_IS_IIS') && mb_strlen($uri) > 600) {
 
-             ResponseRenderer::getInstance()->disable();
 
-             $template = new Template();
 
-             echo $template->render('header_location', ['uri' => $uri]);
 
-             return;
 
-         }
 
-         /*
 
-          * Avoid relative path redirect problems in case user entered URL
 
-          * like /phpmyadmin/index.php/ which some web servers happily accept.
 
-          */
 
-         if ($uri[0] === '.') {
 
-             $uri = $GLOBALS['config']->getRootPath() . substr($uri, 2);
 
-         }
 
-         $response = ResponseRenderer::getInstance();
 
-         session_write_close();
 
-         if ($response->headersSent()) {
 
-             trigger_error('Core::sendHeaderLocation called when headers are already sent!', E_USER_ERROR);
 
-         }
 
-         // bug #1523784: IE6 does not like 'Refresh: 0', it
 
-         // results in a blank page
 
-         // but we need it when coming from the cookie login panel)
 
-         if ($GLOBALS['config']->get('PMA_IS_IIS') && $use_refresh) {
 
-             $response->header('Refresh: 0; ' . $uri);
 
-             return;
 
-         }
 
-         $response->header('Location: ' . $uri);
 
-     }
 
-     /**
 
-      * Outputs application/json headers. This includes no caching.
 
-      */
 
-     public static function headerJSON(): void
 
-     {
 
-         if (defined('TESTSUITE')) {
 
-             return;
 
-         }
 
-         // No caching
 
-         $headers = self::getNoCacheHeaders();
 
-         // Media type
 
-         $headers['Content-Type'] = 'application/json; charset=UTF-8';
 
-         /**
 
-          * Disable content sniffing in browser.
 
-          * This is needed in case we include HTML in JSON, browser might assume it's html to display.
 
-          */
 
-         $headers['X-Content-Type-Options'] = 'nosniff';
 
-         foreach ($headers as $name => $value) {
 
-             header(sprintf('%s: %s', $name, $value));
 
-         }
 
-     }
 
-     /**
 
-      * Outputs headers to prevent caching in browser (and on the way).
 
-      */
 
-     public static function noCacheHeader(): void
 
-     {
 
-         if (defined('TESTSUITE')) {
 
-             return;
 
-         }
 
-         $headers = self::getNoCacheHeaders();
 
-         foreach ($headers as $name => $value) {
 
-             header(sprintf('%s: %s', $name, $value));
 
-         }
 
-     }
 
-     /**
 
-      * @return array<string, string>
 
-      */
 
-     public static function getNoCacheHeaders(): array
 
-     {
 
-         $headers = [];
 
-         $date = (string) gmdate(DATE_RFC1123);
 
-         // rfc2616 - Section 14.21
 
-         $headers['Expires'] = $date;
 
-         // HTTP/1.1
 
-         $headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0';
 
-         // HTTP/1.0
 
-         $headers['Pragma'] = 'no-cache';
 
-         // test case: exporting a database into a .gz file with Safari
 
-         // would produce files not having the current time
 
-         // (added this header for Safari but should not harm other browsers)
 
-         $headers['Last-Modified'] = $date;
 
-         return $headers;
 
-     }
 
-     /**
 
-      * Sends header indicating file download.
 
-      *
 
-      * @param string $filename Filename to include in headers if empty,
 
-      *                         none Content-Disposition header will be sent.
 
-      * @param string $mimetype MIME type to include in headers.
 
-      * @param int    $length   Length of content (optional)
 
-      * @param bool   $no_cache Whether to include no-caching headers.
 
-      */
 
-     public static function downloadHeader(
 
-         string $filename,
 
-         string $mimetype,
 
-         int $length = 0,
 
-         bool $no_cache = true
 
-     ): void {
 
-         $headers = [];
 
-         if ($no_cache) {
 
-             $headers = self::getNoCacheHeaders();
 
-         }
 
-         /* Replace all possibly dangerous chars in filename */
 
-         $filename = Sanitize::sanitizeFilename($filename);
 
-         if (! empty($filename)) {
 
-             $headers['Content-Description'] = 'File Transfer';
 
-             $headers['Content-Disposition'] = 'attachment; filename="' . $filename . '"';
 
-         }
 
-         $headers['Content-Type'] = $mimetype;
 
-         // The default output in PMA uses gzip,
 
-         // so if we want to output uncompressed file, we should reset the encoding.
 
-         // See PHP bug https://github.com/php/php-src/issues/8218
 
-         header_remove('Content-Encoding');
 
-         $headers['Content-Transfer-Encoding'] = 'binary';
 
-         if ($length > 0) {
 
-             $headers['Content-Length'] = (string) $length;
 
-         }
 
-         foreach ($headers as $name => $value) {
 
-             header(sprintf('%s: %s', $name, $value));
 
-         }
 
-     }
 
-     /**
 
-      * Returns value of an element in $array given by $path.
 
-      * $path is a string describing position of an element in an associative array,
 
-      * eg. Servers/1/host refers to $array[Servers][1][host]
 
-      *
 
-      * @param string $path    path in the array
 
-      * @param array  $array   the array
 
-      * @param mixed  $default default value
 
-      *
 
-      * @return array|mixed|null array element or $default
 
-      */
 
-     public static function arrayRead(string $path, array $array, $default = null)
 
-     {
 
-         $keys = explode('/', $path);
 
-         $value =& $array;
 
-         foreach ($keys as $key) {
 
-             if (! isset($value[$key])) {
 
-                 return $default;
 
-             }
 
-             $value =& $value[$key];
 
-         }
 
-         return $value;
 
-     }
 
-     /**
 
-      * Stores value in an array
 
-      *
 
-      * @param string $path  path in the array
 
-      * @param array  $array the array
 
-      * @param mixed  $value value to store
 
-      */
 
-     public static function arrayWrite(string $path, array &$array, $value): void
 
-     {
 
-         $keys = explode('/', $path);
 
-         $last_key = array_pop($keys);
 
-         $a =& $array;
 
-         foreach ($keys as $key) {
 
-             if (! isset($a[$key])) {
 
-                 $a[$key] = [];
 
-             }
 
-             $a =& $a[$key];
 
-         }
 
-         $a[$last_key] = $value;
 
-     }
 
-     /**
 
-      * Removes value from an array
 
-      *
 
-      * @param string $path  path in the array
 
-      * @param array  $array the array
 
-      */
 
-     public static function arrayRemove(string $path, array &$array): void
 
-     {
 
-         $keys = explode('/', $path);
 
-         $keys_last = array_pop($keys);
 
-         $path = [];
 
-         $depth = 0;
 
-         $path[0] =& $array;
 
-         $found = true;
 
-         // go as deep as required or possible
 
-         foreach ($keys as $key) {
 
-             if (! isset($path[$depth][$key])) {
 
-                 $found = false;
 
-                 break;
 
-             }
 
-             $depth++;
 
-             $path[$depth] =& $path[$depth - 1][$key];
 
-         }
 
-         // if element found, remove it
 
-         if ($found) {
 
-             unset($path[$depth][$keys_last]);
 
-             $depth--;
 
-         }
 
-         // remove empty nested arrays
 
-         for (; $depth >= 0; $depth--) {
 
-             if (isset($path[$depth + 1]) && count($path[$depth + 1]) !== 0) {
 
-                 break;
 
-             }
 
-             unset($path[$depth][$keys[$depth]]);
 
-         }
 
-     }
 
-     /**
 
-      * Returns link to (possibly) external site using defined redirector.
 
-      *
 
-      * @param string $url URL where to go.
 
-      *
 
-      * @return string URL for a link.
 
-      */
 
-     public static function linkURL(string $url): string
 
-     {
 
-         if (! preg_match('#^https?://#', $url)) {
 
-             return $url;
 
-         }
 
-         $params = [];
 
-         $params['url'] = $url;
 
-         $url = Url::getCommon($params);
 
-         //strip off token and such sensitive information. Just keep url.
 
-         $arr = parse_url($url);
 
-         if (! is_array($arr)) {
 
-             $arr = [];
 
-         }
 
-         parse_str($arr['query'] ?? '', $vars);
 
-         $query = http_build_query(['url' => $vars['url']]);
 
-         if ($GLOBALS['config'] !== null && $GLOBALS['config']->get('is_setup')) {
 
-             return '../url.php?' . $query;
 
-         }
 
-         return './url.php?' . $query;
 
-     }
 
-     /**
 
-      * Checks whether domain of URL is an allowed domain or not.
 
-      * Use only for URLs of external sites.
 
-      *
 
-      * @param string $url URL of external site.
 
-      */
 
-     public static function isAllowedDomain(string $url): bool
 
-     {
 
-         $arr = parse_url($url);
 
-         if (! is_array($arr)) {
 
-             $arr = [];
 
-         }
 
-         // We need host to be set
 
-         if (! isset($arr['host']) || strlen($arr['host']) == 0) {
 
-             return false;
 
-         }
 
-         // We do not want these to be present
 
-         $blocked = [
 
-             'user',
 
-             'pass',
 
-             'port',
 
-         ];
 
-         foreach ($blocked as $part) {
 
-             if (isset($arr[$part]) && strlen((string) $arr[$part]) != 0) {
 
-                 return false;
 
-             }
 
-         }
 
-         $domain = $arr['host'];
 
-         $domainAllowList = [
 
-             /* Include current domain */
 
-             $_SERVER['SERVER_NAME'],
 
-             /* phpMyAdmin domains */
 
-             'wiki.phpmyadmin.net',
 
-             'www.phpmyadmin.net',
 
-             'phpmyadmin.net',
 
-             'demo.phpmyadmin.net',
 
-             'docs.phpmyadmin.net',
 
-             /* mysql.com domains */
 
-             'dev.mysql.com',
 
-             'bugs.mysql.com',
 
-             /* mariadb domains */
 
-             'mariadb.org',
 
-             'mariadb.com',
 
-             /* php.net domains */
 
-             'php.net',
 
-             'www.php.net',
 
-             /* Github domains*/
 
-             'github.com',
 
-             'www.github.com',
 
-             /* Percona domains */
 
-             'www.percona.com',
 
-             /* CVE domain */
 
-             'www.cve.org',
 
-             /* Following are doubtful ones. */
 
-             'mysqldatabaseadministration.blogspot.com',
 
-         ];
 
-         return in_array($domain, $domainAllowList);
 
-     }
 
-     /**
 
-      * Replace some html-unfriendly stuff
 
-      *
 
-      * @param string $buffer String to process
 
-      *
 
-      * @return string Escaped and cleaned up text suitable for html
 
-      */
 
-     public static function mimeDefaultFunction(string $buffer): string
 
-     {
 
-         $buffer = htmlspecialchars($buffer);
 
-         $buffer = str_replace('  ', '  ', $buffer);
 
-         return (string) preg_replace("@((\015\012)|(\015)|(\012))@", '<br>' . "\n", $buffer);
 
-     }
 
-     /**
 
-      * Displays SQL query before executing.
 
-      *
 
-      * @param array|string $query_data Array containing queries or query itself
 
-      */
 
-     public static function previewSQL($query_data): void
 
-     {
 
-         $retval = '<div class="preview_sql">';
 
-         if (empty($query_data)) {
 
-             $retval .= __('No change');
 
-         } elseif (is_array($query_data)) {
 
-             foreach ($query_data as $query) {
 
-                 $retval .= Html\Generator::formatSql($query);
 
-             }
 
-         } else {
 
-             $retval .= Html\Generator::formatSql($query_data);
 
-         }
 
-         $retval .= '</div>';
 
-         $response = ResponseRenderer::getInstance();
 
-         $response->addJSON('sql_data', $retval);
 
-     }
 
-     /**
 
-      * recursively check if variable is empty
 
-      *
 
-      * @param mixed $value the variable
 
-      */
 
-     public static function emptyRecursive($value): bool
 
-     {
 
-         if (is_array($value)) {
 
-             $empty = true;
 
-             array_walk_recursive(
 
-                 $value,
 
-                 /**
 
-                  * @param mixed $item
 
-                  */
 
-                 static function ($item) use (&$empty): void {
 
-                     $empty = $empty && empty($item);
 
-                 }
 
-             );
 
-             return $empty;
 
-         }
 
-         return empty($value);
 
-     }
 
-     /**
 
-      * Creates some globals from $_POST variables matching a pattern
 
-      *
 
-      * @param array $post_patterns The patterns to search for
 
-      */
 
-     public static function setPostAsGlobal(array $post_patterns): void
 
-     {
 
-         global $containerBuilder;
 
-         foreach (array_keys($_POST) as $post_key) {
 
-             foreach ($post_patterns as $one_post_pattern) {
 
-                 if (! preg_match($one_post_pattern, $post_key)) {
 
-                     continue;
 
-                 }
 
-                 $GLOBALS[$post_key] = $_POST[$post_key];
 
-                 $containerBuilder->setParameter($post_key, $GLOBALS[$post_key]);
 
-             }
 
-         }
 
-     }
 
-     /**
 
-      * Gets the "true" IP address of the current user
 
-      *
 
-      * @return string|bool the ip of the user
 
-      */
 
-     public static function getIp()
 
-     {
 
-         /* Get the address of user */
 
-         if (empty($_SERVER['REMOTE_ADDR'])) {
 
-             /* We do not know remote IP */
 
-             return false;
 
-         }
 
-         $direct_ip = $_SERVER['REMOTE_ADDR'];
 
-         /* Do we trust this IP as a proxy? If yes we will use it's header. */
 
-         if (! isset($GLOBALS['cfg']['TrustedProxies'][$direct_ip])) {
 
-             /* Return true IP */
 
-             return $direct_ip;
 
-         }
 
-         /**
 
-          * Parse header in form:
 
-          * X-Forwarded-For: client, proxy1, proxy2
 
-          */
 
-         // Get header content
 
-         $value = self::getenv($GLOBALS['cfg']['TrustedProxies'][$direct_ip]);
 
-         // Grab first element what is client adddress
 
-         $value = explode(',', $value)[0];
 
-         // checks that the header contains only one IP address,
 
-         $is_ip = filter_var($value, FILTER_VALIDATE_IP);
 
-         if ($is_ip !== false) {
 
-             // True IP behind a proxy
 
-             return $value;
 
-         }
 
-         // We could not parse header
 
-         return false;
 
-     }
 
-     /**
 
-      * Sanitizes MySQL hostname
 
-      *
 
-      * * strips p: prefix(es)
 
-      *
 
-      * @param string $name User given hostname
 
-      */
 
-     public static function sanitizeMySQLHost(string $name): string
 
-     {
 
-         while (strtolower(substr($name, 0, 2)) === 'p:') {
 
-             $name = substr($name, 2);
 
-         }
 
-         return $name;
 
-     }
 
-     /**
 
-      * Sanitizes MySQL username
 
-      *
 
-      * * strips part behind null byte
 
-      *
 
-      * @param string $name User given username
 
-      */
 
-     public static function sanitizeMySQLUser(string $name): string
 
-     {
 
-         $position = strpos($name, chr(0));
 
-         if ($position !== false) {
 
-             return substr($name, 0, $position);
 
-         }
 
-         return $name;
 
-     }
 
-     /**
 
-      * Safe unserializer wrapper
 
-      *
 
-      * It does not unserialize data containing objects
 
-      *
 
-      * @param string $data Data to unserialize
 
-      *
 
-      * @return mixed|null
 
-      */
 
-     public static function safeUnserialize(string $data)
 
-     {
 
-         /* validate serialized data */
 
-         $length = strlen($data);
 
-         $depth = 0;
 
-         for ($i = 0; $i < $length; $i++) {
 
-             $value = $data[$i];
 
-             switch ($value) {
 
-                 case '}':
 
-                     /* end of array */
 
-                     if ($depth <= 0) {
 
-                         return null;
 
-                     }
 
-                     $depth--;
 
-                     break;
 
-                 case 's':
 
-                     /* string */
 
-                     // parse sting length
 
-                     $strlen = intval(substr($data, $i + 2));
 
-                     // string start
 
-                     $i = strpos($data, ':', $i + 2);
 
-                     if ($i === false) {
 
-                         return null;
 
-                     }
 
-                     // skip string, quotes and ;
 
-                     $i += 2 + $strlen + 1;
 
-                     if ($data[$i] !== ';') {
 
-                         return null;
 
-                     }
 
-                     break;
 
-                 case 'b':
 
-                 case 'i':
 
-                 case 'd':
 
-                     /* bool, integer or double */
 
-                     // skip value to separator
 
-                     $i = strpos($data, ';', $i);
 
-                     if ($i === false) {
 
-                         return null;
 
-                     }
 
-                     break;
 
-                 case 'a':
 
-                     /* array */
 
-                     // find array start
 
-                     $i = strpos($data, '{', $i);
 
-                     if ($i === false) {
 
-                         return null;
 
-                     }
 
-                     // remember nesting
 
-                     $depth++;
 
-                     break;
 
-                 case 'N':
 
-                     /* null */
 
-                     // skip to end
 
-                     $i = strpos($data, ';', $i);
 
-                     if ($i === false) {
 
-                         return null;
 
-                     }
 
-                     break;
 
-                 default:
 
-                     /* any other elements are not wanted */
 
-                     return null;
 
-             }
 
-         }
 
-         // check unterminated arrays
 
-         if ($depth > 0) {
 
-             return null;
 
-         }
 
-         return unserialize($data);
 
-     }
 
-     /**
 
-      * Sign the sql query using hmac using the session token
 
-      *
 
-      * @param string $sqlQuery The sql query
 
-      *
 
-      * @return string
 
-      */
 
-     public static function signSqlQuery($sqlQuery)
 
-     {
 
-         global $cfg;
 
-         $secret = $_SESSION[' HMAC_secret '] ?? '';
 
-         return hash_hmac('sha256', $sqlQuery, $secret . $cfg['blowfish_secret']);
 
-     }
 
-     /**
 
-      * Check that the sql query has a valid hmac signature
 
-      *
 
-      * @param string $sqlQuery  The sql query
 
-      * @param string $signature The Signature to check
 
-      */
 
-     public static function checkSqlQuerySignature($sqlQuery, $signature): bool
 
-     {
 
-         global $cfg;
 
-         $secret = $_SESSION[' HMAC_secret '] ?? '';
 
-         $hmac = hash_hmac('sha256', $sqlQuery, $secret . $cfg['blowfish_secret']);
 
-         return hash_equals($hmac, $signature);
 
-     }
 
-     /**
 
-      * Get the container builder
 
-      */
 
-     public static function getContainerBuilder(): ContainerBuilder
 
-     {
 
-         $containerBuilder = new ContainerBuilder();
 
-         $loader = new PhpFileLoader($containerBuilder, new FileLocator(ROOT_PATH . 'libraries'));
 
-         $loader->load('services_loader.php');
 
-         return $containerBuilder;
 
-     }
 
-     public static function populateRequestWithEncryptedQueryParams(ServerRequest $request): ServerRequest
 
-     {
 
-         $queryParams = $request->getQueryParams();
 
-         $parsedBody = $request->getParsedBody();
 
-         unset($_GET['eq'], $_POST['eq'], $_REQUEST['eq']);
 
-         if (! isset($queryParams['eq']) && (! is_array($parsedBody) || ! isset($parsedBody['eq']))) {
 
-             return $request;
 
-         }
 
-         $encryptedQuery = '';
 
-         if (
 
-             is_array($parsedBody)
 
-             && isset($parsedBody['eq'])
 
-             && is_string($parsedBody['eq'])
 
-             && $parsedBody['eq'] !== ''
 
-         ) {
 
-             $encryptedQuery = $parsedBody['eq'];
 
-             unset($parsedBody['eq'], $queryParams['eq']);
 
-         } elseif (isset($queryParams['eq']) && is_string($queryParams['eq']) && $queryParams['eq'] !== '') {
 
-             $encryptedQuery = $queryParams['eq'];
 
-             unset($queryParams['eq']);
 
-         }
 
-         $decryptedQuery = null;
 
-         if ($encryptedQuery !== '') {
 
-             $decryptedQuery = Url::decryptQuery($encryptedQuery);
 
-         }
 
-         if ($decryptedQuery === null) {
 
-             $request = $request->withQueryParams($queryParams);
 
-             if (is_array($parsedBody)) {
 
-                 $request = $request->withParsedBody($parsedBody);
 
-             }
 
-             return $request;
 
-         }
 
-         $urlQueryParams = (array) json_decode($decryptedQuery);
 
-         foreach ($urlQueryParams as $urlQueryParamKey => $urlQueryParamValue) {
 
-             if (is_array($parsedBody)) {
 
-                 $parsedBody[$urlQueryParamKey] = $urlQueryParamValue;
 
-                 $_POST[$urlQueryParamKey] = $urlQueryParamValue;
 
-             } else {
 
-                 $queryParams[$urlQueryParamKey] = $urlQueryParamValue;
 
-                 $_GET[$urlQueryParamKey] = $urlQueryParamValue;
 
-             }
 
-             $_REQUEST[$urlQueryParamKey] = $urlQueryParamValue;
 
-         }
 
-         $request = $request->withQueryParams($queryParams);
 
-         if (is_array($parsedBody)) {
 
-             $request = $request->withParsedBody($parsedBody);
 
-         }
 
-         return $request;
 
-     }
 
- }
 
 
  |