1044 lines
29 KiB
PHP
1044 lines
29 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace PhpMyAdmin;
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use PhpMyAdmin\Http\ServerRequest;
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use Symfony\Component\Config\FileLocator;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
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use function __;
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use function array_keys;
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use function array_pop;
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use function array_walk_recursive;
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use function chr;
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use function count;
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use function defined;
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use function explode;
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use function filter_var;
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use function function_exists;
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use function getenv;
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use function gmdate;
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use function hash_equals;
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use function hash_hmac;
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use function header;
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use function header_remove;
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use function htmlspecialchars;
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use function http_build_query;
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use function in_array;
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use function intval;
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use function is_array;
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use function is_string;
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use function json_decode;
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use function json_encode;
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use function mb_strlen;
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use function mb_strpos;
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use function mb_substr;
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use function parse_str;
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use function parse_url;
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use function preg_match;
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use function preg_replace;
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use function session_write_close;
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use function sprintf;
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use function str_replace;
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use function strlen;
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use function strpos;
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use function strtolower;
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use function strtr;
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use function substr;
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use function trigger_error;
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use function unserialize;
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use function urldecode;
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use function vsprintf;
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use const DATE_RFC1123;
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use const E_USER_ERROR;
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use const E_USER_WARNING;
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use const FILTER_VALIDATE_IP;
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/**
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* Core functions used all over the scripts.
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*/
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class Core
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{
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/**
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* Removes insecure parts in a path; used before include() or
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* require() when a part of the path comes from an insecure source
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* like a cookie or form.
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*
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* @param string $path The path to check
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*/
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public static function securePath(string $path): string
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{
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// change .. to .
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return (string) preg_replace('@\.\.*@', '.', $path);
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}
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/**
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* displays the given error message on phpMyAdmin error page in foreign language,
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* ends script execution and closes session
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*
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* loads language file if not loaded already
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*
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* @param string $error_message the error message or named error message
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* @param string|array $message_args arguments applied to $error_message
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*/
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public static function fatalError(
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string $error_message,
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$message_args = null
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): void {
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global $dbi;
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/* Use format string if applicable */
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if (is_string($message_args)) {
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$error_message = sprintf($error_message, $message_args);
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} elseif (is_array($message_args)) {
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$error_message = vsprintf($error_message, $message_args);
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}
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/*
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* Avoid using Response class as config does not have to be loaded yet
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* (this can happen on early fatal error)
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*/
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if (
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isset($dbi, $GLOBALS['config'])
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&& $GLOBALS['config']->get('is_setup') === false
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&& ResponseRenderer::getInstance()->isAjax()
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) {
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$response = ResponseRenderer::getInstance();
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$response->setRequestStatus(false);
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$response->addJSON('message', Message::error($error_message));
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if (! defined('TESTSUITE')) {
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exit;
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}
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return;
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}
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if (! empty($_REQUEST['ajax_request'])) {
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// Generate JSON manually
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self::headerJSON();
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echo json_encode(
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[
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'success' => false,
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'message' => Message::error($error_message)->getDisplay(),
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]
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);
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if (! defined('TESTSUITE')) {
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exit;
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}
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return;
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}
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$error_message = strtr($error_message, ['<br>' => '[br]']);
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$template = new Template();
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echo $template->render('error/generic', [
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'lang' => $GLOBALS['lang'] ?? 'en',
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'dir' => $GLOBALS['text_dir'] ?? 'ltr',
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'error_message' => Sanitize::sanitizeMessage($error_message),
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]);
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if (! defined('TESTSUITE')) {
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exit;
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}
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}
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/**
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* Returns a link to the PHP documentation
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*
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* @param string $target anchor in documentation
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*
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* @return string the URL
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*/
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public static function getPHPDocLink(string $target): string
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{
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/* List of PHP documentation translations */
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$php_doc_languages = [
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'pt_BR',
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'zh_CN',
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'fr',
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'de',
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'ja',
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'ru',
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'es',
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'tr',
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];
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$lang = 'en';
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if (isset($GLOBALS['lang']) && in_array($GLOBALS['lang'], $php_doc_languages)) {
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if ($GLOBALS['lang'] === 'zh_CN') {
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$lang = 'zh';
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} else {
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$lang = $GLOBALS['lang'];
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}
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}
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return self::linkURL('https://www.php.net/manual/' . $lang . '/' . $target);
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}
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/**
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* Warn or fail on missing extension.
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*
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* @param string $extension Extension name
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* @param bool $fatal Whether the error is fatal.
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* @param string $extra Extra string to append to message.
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*/
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public static function warnMissingExtension(
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string $extension,
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bool $fatal = false,
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string $extra = ''
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): void {
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global $errorHandler;
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$message = 'The %s extension is missing. Please check your PHP configuration.';
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/* Gettext does not have to be loaded yet here */
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if (function_exists('__')) {
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$message = __('The %s extension is missing. Please check your PHP configuration.');
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}
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$doclink = self::getPHPDocLink('book.' . $extension . '.php');
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$message = sprintf($message, '[a@' . $doclink . '@Documentation][em]' . $extension . '[/em][/a]');
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if ($extra != '') {
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$message .= ' ' . $extra;
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}
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if ($fatal) {
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self::fatalError($message);
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return;
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}
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$errorHandler->addError($message, E_USER_WARNING, '', 0, false);
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}
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/**
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* returns count of tables in given db
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*
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* @param string $db database to count tables for
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*
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* @return int count of tables in $db
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*/
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public static function getTableCount(string $db): int
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{
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global $dbi;
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$tables = $dbi->tryQuery('SHOW TABLES FROM ' . Util::backquote($db) . ';');
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if ($tables) {
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return $tables->numRows();
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}
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return 0;
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}
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/**
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* Converts numbers like 10M into bytes
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* Used with permission from Moodle (https://moodle.org) by Martin Dougiamas
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* (renamed with PMA prefix to avoid double definition when embedded
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* in Moodle)
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*
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* @param string|int $size size (Default = 0)
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*/
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public static function getRealSize($size = 0): int
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{
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if (! $size) {
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return 0;
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}
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$binaryprefixes = [
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'T' => 1099511627776,
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't' => 1099511627776,
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'G' => 1073741824,
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'g' => 1073741824,
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'M' => 1048576,
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'm' => 1048576,
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'K' => 1024,
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'k' => 1024,
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];
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if (preg_match('/^([0-9]+)([KMGT])/i', (string) $size, $matches)) {
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return (int) ($matches[1] * $binaryprefixes[$matches[2]]);
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}
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return (int) $size;
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}
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/**
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* Checks given $page against given $allowList and returns true if valid
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* it optionally ignores query parameters in $page (script.php?ignored)
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*
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* @param string $page page to check
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* @param array $allowList allow list to check page against
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* @param bool $include whether the page is going to be included
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*/
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public static function checkPageValidity(&$page, array $allowList = [], $include = false): bool
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{
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if (empty($allowList)) {
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$allowList = ['index.php'];
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}
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if (empty($page)) {
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return false;
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}
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if (in_array($page, $allowList)) {
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return true;
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}
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if ($include) {
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return false;
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}
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$_page = mb_substr(
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$page,
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0,
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(int) mb_strpos($page . '?', '?')
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);
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if (in_array($_page, $allowList)) {
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return true;
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}
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$_page = urldecode($page);
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$_page = mb_substr(
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$_page,
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0,
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(int) mb_strpos($_page . '?', '?')
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);
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return in_array($_page, $allowList);
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}
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/**
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* tries to find the value for the given environment variable name
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*
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* searches in $_SERVER, $_ENV then tries getenv() and apache_getenv()
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* in this order
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*
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* @param string $var_name variable name
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*
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* @return string value of $var or empty string
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*/
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public static function getenv(string $var_name): string
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{
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if (isset($_SERVER[$var_name])) {
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return (string) $_SERVER[$var_name];
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}
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if (isset($_ENV[$var_name])) {
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return (string) $_ENV[$var_name];
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}
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if (getenv($var_name)) {
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return (string) getenv($var_name);
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}
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if (function_exists('apache_getenv') && apache_getenv($var_name, true)) {
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return (string) apache_getenv($var_name, true);
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}
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return '';
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}
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/**
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* Send HTTP header, taking IIS limits into account (600 seems ok)
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*
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* @param string $uri the header to send
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* @param bool $use_refresh whether to use Refresh: header when running on IIS
|
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*/
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public static function sendHeaderLocation(string $uri, bool $use_refresh = false): void
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{
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if ($GLOBALS['config']->get('PMA_IS_IIS') && mb_strlen($uri) > 600) {
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ResponseRenderer::getInstance()->disable();
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$template = new Template();
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echo $template->render('header_location', ['uri' => $uri]);
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return;
|
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}
|
||
|
|
|
||
|
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/*
|
||
|
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* Avoid relative path redirect problems in case user entered URL
|
||
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* like /phpmyadmin/index.php/ which some web servers happily accept.
|
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*/
|
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if ($uri[0] === '.') {
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$uri = $GLOBALS['config']->getRootPath() . substr($uri, 2);
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}
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$response = ResponseRenderer::getInstance();
|
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session_write_close();
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if ($response->headersSent()) {
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trigger_error('Core::sendHeaderLocation called when headers are already sent!', E_USER_ERROR);
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}
|
||
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|
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// bug #1523784: IE6 does not like 'Refresh: 0', it
|
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|
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// results in a blank page
|
||
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// but we need it when coming from the cookie login panel)
|
||
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if ($GLOBALS['config']->get('PMA_IS_IIS') && $use_refresh) {
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$response->header('Refresh: 0; ' . $uri);
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return;
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}
|
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$response->header('Location: ' . $uri);
|
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}
|
||
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|
||
|
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/**
|
||
|
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* Outputs application/json headers. This includes no caching.
|
||
|
|
*/
|
||
|
|
public static function headerJSON(): void
|
||
|
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{
|
||
|
|
if (defined('TESTSUITE')) {
|
||
|
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return;
|
||
|
|
}
|
||
|
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|
||
|
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// No caching
|
||
|
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$headers = self::getNoCacheHeaders();
|
||
|
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|
||
|
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// Media type
|
||
|
|
$headers['Content-Type'] = 'application/json; charset=UTF-8';
|
||
|
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|
||
|
|
/**
|
||
|
|
* 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 */
|
||
|
|
$_SERVER['SERVER_NAME'],
|
||
|
|
/* phpMyAdmin domains */
|
||
|
|
'wiki.phpmyadmin.net',
|
||
|
|
'www.phpmyadmin.net',
|
||
|
|
'phpmyadmin.net',
|
||
|
|
'demo.phpmyadmin.net',
|
||
|
|
'docs.phpmyadmin.net',
|
||
|
|
/* mysql.com domains */
|
||
|
|
'dev.mysql.com',
|
||
|
|
'bugs.mysql.com',
|
||
|
|
/* mariadb domains */
|
||
|
|
'mariadb.org',
|
||
|
|
'mariadb.com',
|
||
|
|
/* php.net domains */
|
||
|
|
'php.net',
|
||
|
|
'www.php.net',
|
||
|
|
/* Github domains*/
|
||
|
|
'github.com',
|
||
|
|
'www.github.com',
|
||
|
|
/* Percona domains */
|
||
|
|
'www.percona.com',
|
||
|
|
/* Following are doubtful ones. */
|
||
|
|
'mysqldatabaseadministration.blogspot.com',
|
||
|
|
];
|
||
|
|
|
||
|
|
return in_array($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;
|
||
|
|
}
|
||
|
|
}
|