[DATABASE] Switch from PEAR DB to MDB2

plugins/OpenID/lib/openiddbconn.php

@@ -0,0 +1,204 @@
+<?php
+// This file is part of GNU social - https://www.gnu.org/software/social
+//
+// GNU social is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GNU social is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * @package   GNUsocial
+ * @author    Alexei Sorokin <sor.alexei@meowr.ru>
+ * @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
+ * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
+ */
+
+defined('GNUSOCIAL') || die();
+
+require_once 'Auth/OpenID/DatabaseConnection.php';
+
+/**
+ * A DB abstraction error for OpenID's Auth_OpenID_SQLStore
+ *
+ * @package   GNUsocial
+ * @author    Alexei Sorokin <sor.alexei@meowr.ru>
+ * @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
+ * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
+ */
+class SQLStore_DB_Connection extends Auth_OpenID_DatabaseConnection
+{
+    private $conn = null;
+    private $autocommit = true;
+
+    /**
+     * @param string|array $dsn
+     * @param array $options
+     */
+    public function __construct($dsn, array $options = [])
+    {
+        if (!is_array($dsn)) {
+            $dsn = MDB2::parseDSN($dsn);
+        }
+        $dsn['new_link'] = true;
+
+        // To create a new Database connection is an absolute must, because
+        // php-openid code delays its transactions commitment.
+        // Is a must because our Internal Session Handler uses the database
+        // and depends on immediate commitment.
+        $this->conn = MDB2::connect($dsn, $options);
+
+        if (MDB2::isError($this->conn)) {
+            throw new ServerException($this->conn->getMessage());
+        }
+    }
+
+    public function __destruct()
+    {
+        $this->conn->disconnect();
+    }
+
+    /**
+     * Sets auto-commit mode on this database connection.
+     *
+     * @param bool $mode
+     */
+    public function autoCommit($mode)
+    {
+        $this->autocommit = $mode;
+        if ($mode && $this->conn->inTransaction()) {
+            $this->commit();
+        }
+    }
+
+    /**
+     * Run an SQL query with the specified parameters, if any.
+     *
+     * @param string $sql
+     * @param array $params
+     * @param bool $is_manip
+     * @return mixed
+     */
+    private function _query(string $sql, array $params = [], bool $is_manip)
+    {
+        $stmt_type = $is_manip ? MDB2_PREPARE_MANIP : MDB2_PREPARE_RESULT;
+        if ($is_manip && !$this->autocommit) {
+            $this->begin();
+        }
+
+        $split = preg_split(
+            '/((?<!\\\)[&?!]|\'!\')/',
+            $sql,
+            -1,
+            PREG_SPLIT_DELIM_CAPTURE
+        );
+        $sql = '';
+        // '!' has no meaning in MDB2, but MDB2 can detect types like BLOB.
+        $i = 0;
+        foreach ($split as $part) {
+            if (!in_array($part, ['?', '!', "'!'"])) {
+                $sql .= preg_replace('/\\\([!])/', '\\1', $part);
+            } else {
+                ++$i;
+                $sql .= '?';
+            }
+        }
+
+        $stmt = $this->conn->prepare($sql, null, $stmt_type);
+        if (MDB2::isError($stmt)) {
+            // php-openid actually expects PEAR_Error.
+            return $res;
+        }
+        if (count($params) > 0) {
+            $stmt->bindValueArray($params);
+        }
+        $res = $stmt->execute();
+        if (MDB2::isError($res)) {
+            return $res;
+        }
+        return $res;
+    }
+
+    /**
+     * Run an SQL query with the specified parameters, if any.
+     *
+     * @param string $sql
+     * @param array $params
+     * @return mixed
+     */
+    public function query($sql, $params = [])
+    {
+        return $this->_query($sql, $params, true);
+    }
+
+    public function begin()
+    {
+        $this->conn->beginTransaction();
+    }
+
+    public function commit()
+    {
+        $this->conn->commit();
+    }
+
+    public function rollback()
+    {
+        $this->conn->rollback();
+    }
+
+    /**
+     * Run an SQL query and return the first column of the first row of the
+     * result set, if any.
+     *
+     * @param string $sql
+     * @param array $params
+     * @return string|PEAR_Error
+     */
+    public function getOne($sql, $params = [])
+    {
+        $res = $this->_query($sql, $params, false);
+        if (MDB2::isError($res)) {
+            return $res;
+        }
+        return $res->fetchOne() ?? '';
+    }
+
+    /**
+     * Run an SQL query and return the first row of the result set, if any.
+     *
+     * @param string $sql
+     * @param array $params
+     * @return array|PEAR_Error
+     */
+    public function getRow($sql, $params = [])
+    {
+        $res = $this->_query($sql, $params, false);
+        if (MDB2::isError($res)) {
+            return $res;
+        }
+        return $res->fetchRow(MDB2_FETCHMODE_ASSOC);
+    }
+
+    /**
+     * Run an SQL query with the specified parameters, if any.
+     *
+     * @param string $sql
+     * @param array $params
+     * @return array|PEAR_Error
+     */
+    public function getAll($sql, $params = [])
+    {
+        $res = $this->_query($sql, $params, false);
+        if (MDB2::isError($res)) {
+            return $res;
+        }
+        return $res->fetchAll(MDB2_FETCHMODE_ASSOC);
+    }
+}