Update website

admin/phpMyAdmin/libraries/classes/DbTableExists.php

@@ -0,0 +1,118 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin;
+
+use PhpMyAdmin\Controllers\Database\SqlController;
+
+use function __;
+use function defined;
+use function strlen;
+
+final class DbTableExists
+{
+    /**
+     * Ensure the database and the table exist (else move to the "parent" script)
+     * and display headers
+     */
+    public static function check(): void
+    {
+        self::checkDatabase();
+        self::checkTable();
+    }
+
+    private static function checkDatabase(): void
+    {
+        global $db, $dbi, $is_db, $message, $show_as_php, $sql_query;
+
+        if (! empty($is_db)) {
+            return;
+        }
+
+        $is_db = false;
+        if (strlen($db) > 0) {
+            $is_db = @$dbi->selectDb($db);
+        }
+
+        if ($is_db || defined('IS_TRANSFORMATION_WRAPPER')) {
+            return;
+        }
+
+        $response = ResponseRenderer::getInstance();
+        if ($response->isAjax()) {
+            $response->setRequestStatus(false);
+            $response->addJSON(
+                'message',
+                Message::error(__('No databases selected.'))
+            );
+
+            exit;
+        }
+
+        $urlParams = ['reload' => 1];
+
+        if (isset($message)) {
+            $urlParams['message'] = $message;
+        }
+
+        if (! empty($sql_query)) {
+            $urlParams['sql_query'] = $sql_query;
+        }
+
+        if (isset($show_as_php)) {
+            $urlParams['show_as_php'] = $show_as_php;
+        }
+
+        Core::sendHeaderLocation('./index.php?route=/' . Url::getCommonRaw($urlParams, '&'));
+
+        exit;
+    }
+
+    private static function checkTable(): void
+    {
+        global $containerBuilder, $db, $table, $dbi, $is_table;
+
+        if (! empty($is_table) || defined('PMA_SUBMIT_MULT') || defined('TABLE_MAY_BE_ABSENT')) {
+            return;
+        }
+
+        $is_table = false;
+        if (strlen($table) > 0) {
+            $is_table = $dbi->getCache()->getCachedTableContent([$db, $table], false);
+            if ($is_table) {
+                return;
+            }
+
+            $result = $dbi->tryQuery('SHOW TABLES LIKE \'' . $dbi->escapeString($table) . '\';');
+            $is_table = $result && $result->numRows();
+        }
+
+        if ($is_table) {
+            return;
+        }
+
+        if (defined('IS_TRANSFORMATION_WRAPPER')) {
+            exit;
+        }
+
+        if (strlen($table) > 0) {
+            /**
+             * SHOW TABLES doesn't show temporary tables, so try select
+             * (as it can happen just in case temporary table, it should be fast):
+             */
+            $result = $dbi->tryQuery('SELECT COUNT(*) FROM ' . Util::backquote($table) . ';');
+            $is_table = $result && $result->numRows();
+        }
+
+        if ($is_table) {
+            return;
+        }
+
+        /** @var SqlController $controller */
+        $controller = $containerBuilder->get(SqlController::class);
+        $controller();
+
+        exit;
+    }
+}