| | |
| | | |
| | | /** |
| | | +-----------------------------------------------------------------------+ |
| | | | program/include/rcube_db.php | |
| | | | | |
| | | | This file is part of the Roundcube Webmail client | |
| | | | Copyright (C) 2005-2012, The Roundcube Dev Team | |
| | | | | |
| | |
| | | | | |
| | | | PURPOSE: | |
| | | | Database wrapper class that implements PHP PDO functions | |
| | | | | |
| | | +-----------------------------------------------------------------------+ |
| | | | Author: Aleksander Machniak <alec@alec.pl> | |
| | | +-----------------------------------------------------------------------+ |
| | | */ |
| | | |
| | | |
| | | /** |
| | | * Database independent query interface. |
| | | * This is a wrapper for the PHP PDO. |
| | | * |
| | | * @package Framework |
| | | * @sbpackage Database |
| | | * @subpackage Database |
| | | */ |
| | | class rcube_db |
| | | { |
| | |
| | | protected $db_mode; // Connection mode |
| | | protected $dbh; // Connection handle |
| | | |
| | | protected $db_error = false; |
| | | protected $db_error_msg = ''; |
| | | protected $conn_failure = false; |
| | | protected $a_query_results = array('dummy'); |
| | | protected $last_res_id = 0; |
| | | protected $db_index = 0; |
| | | protected $db_error = false; |
| | | protected $db_error_msg = ''; |
| | | protected $conn_failure = false; |
| | | protected $db_index = 0; |
| | | protected $last_result; |
| | | protected $tables; |
| | | protected $variables; |
| | | |
| | |
| | | $driver = isset($driver_map[$driver]) ? $driver_map[$driver] : $driver; |
| | | $class = "rcube_db_$driver"; |
| | | |
| | | if (!class_exists($class)) { |
| | | if (!$driver || !class_exists($class)) { |
| | | rcube::raise_error(array('code' => 600, 'type' => 'db', |
| | | 'line' => __LINE__, 'file' => __FILE__, |
| | | 'message' => "Configuration error. Unsupported database driver: $driver"), |
| | |
| | | $this->db_connected = is_object($this->dbh); |
| | | |
| | | // use write-master when read-only fails |
| | | if (!$this->db_connected && $mode == 'r') { |
| | | if (!$this->db_connected && $mode == 'r' && $this->is_replicated()) { |
| | | $mode = 'w'; |
| | | $this->dbh = $this->dsn_connect($this->db_dsnw_array); |
| | | $this->db_connected = is_object($this->dbh); |
| | |
| | | /** |
| | | * Getter for error state |
| | | * |
| | | * @param int $res_id Optional query result identifier |
| | | * @param mixed $result Optional query result |
| | | * |
| | | * @return string Error message |
| | | */ |
| | | public function is_error($res_id = null) |
| | | public function is_error($result = null) |
| | | { |
| | | if ($res_id !== null) { |
| | | return $this->_get_result($res_id) === false ? $this->db_error_msg : null; |
| | | if ($result !== null) { |
| | | return $result === false ? $this->db_error_msg : null; |
| | | } |
| | | |
| | | return $this->db_error ? $this->db_error_msg : null; |
| | |
| | | * @param int Number of rows for LIMIT statement |
| | | * @param mixed Values to be inserted in query |
| | | * |
| | | * @return int Query handle identifier |
| | | * @return PDOStatement|bool Query handle or False on error |
| | | */ |
| | | public function limitquery() |
| | | { |
| | |
| | | * @param int $numrows Number of rows for LIMIT statement |
| | | * @param array $params Values to be inserted in query |
| | | * |
| | | * @return int Query handle identifier |
| | | * @return PDOStatement|bool Query handle or False on error |
| | | */ |
| | | protected function _query($query, $offset, $numrows, $params) |
| | | { |
| | |
| | | |
| | | // check connection before proceeding |
| | | if (!$this->is_connected()) { |
| | | return null; |
| | | return $this->last_result = false; |
| | | } |
| | | |
| | | if ($numrows || $offset) { |
| | |
| | | |
| | | $this->debug($query); |
| | | |
| | | // destroy reference to previous result, required for SQLite driver (#1488874) |
| | | $this->last_result = null; |
| | | $this->db_error_msg = null; |
| | | |
| | | // send query |
| | | $query = $this->dbh->query($query); |
| | | |
| | | if ($query === false) { |
| | |
| | | 'message' => $this->db_error_msg), true, false); |
| | | } |
| | | |
| | | // add result, even if it's an error |
| | | return $this->_add_result($query); |
| | | $this->last_result = $query; |
| | | |
| | | return $query; |
| | | } |
| | | |
| | | /** |
| | | * Get number of affected rows for the last query |
| | | * |
| | | * @param number $res_id Optional query handle identifier |
| | | * @param mixed $result Optional query handle |
| | | * |
| | | * @return int Number of rows or false on failure |
| | | * @return int Number of (matching) rows |
| | | */ |
| | | public function affected_rows($res_id = null) |
| | | public function affected_rows($result = null) |
| | | { |
| | | if ($result = $this->_get_result($res_id)) { |
| | | if ($result || ($result === null && ($result = $this->last_result))) { |
| | | return $result->rowCount(); |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /** |
| | | * Get number of rows for a SQL query |
| | | * If no query handle is specified, the last query will be taken as reference |
| | | * |
| | | * @param mixed $result Optional query handle |
| | | * @return mixed Number of rows or false on failure |
| | | * @deprecated This method shows very poor performance and should be avoided. |
| | | */ |
| | | public function num_rows($result = null) |
| | | { |
| | | if ($result || ($result === null && ($result = $this->last_result))) { |
| | | // repeat query with SELECT COUNT(*) ... |
| | | if (preg_match('/^SELECT\s+(?:ALL\s+|DISTINCT\s+)?(?:.*?)\s+FROM\s+(.*)$/ims', $result->queryString, $m)) { |
| | | $query = $this->dbh->query('SELECT COUNT(*) FROM ' . $m[1], PDO::FETCH_NUM); |
| | | return $query ? intval($query->fetchColumn(0)) : false; |
| | | } |
| | | else { |
| | | $num = count($result->fetchAll()); |
| | | $result->execute(); // re-execute query because there's no seek(0) |
| | | return $num; |
| | | } |
| | | } |
| | | |
| | | return false; |
| | | } |
| | | |
| | | /** |
| | |
| | | * Get an associative array for one row |
| | | * If no query handle is specified, the last query will be taken as reference |
| | | * |
| | | * @param int $res_id Optional query handle identifier |
| | | * @param mixed $result Optional query handle |
| | | * |
| | | * @return mixed Array with col values or false on failure |
| | | */ |
| | | public function fetch_assoc($res_id = null) |
| | | public function fetch_assoc($result = null) |
| | | { |
| | | $result = $this->_get_result($res_id); |
| | | return $this->_fetch_row($result, PDO::FETCH_ASSOC); |
| | | } |
| | | |
| | |
| | | * Get an index array for one row |
| | | * If no query handle is specified, the last query will be taken as reference |
| | | * |
| | | * @param int $res_id Optional query handle identifier |
| | | * @param mixed $result Optional query handle |
| | | * |
| | | * @return mixed Array with col values or false on failure |
| | | */ |
| | | public function fetch_array($res_id = null) |
| | | public function fetch_array($result = null) |
| | | { |
| | | $result = $this->_get_result($res_id); |
| | | return $this->_fetch_row($result, PDO::FETCH_NUM); |
| | | } |
| | | |
| | | /** |
| | | * Get col values for a result row |
| | | * |
| | | * @param PDOStatement $result Result handle |
| | | * @param int $mode Fetch mode identifier |
| | | * @param mixed $result Optional query handle |
| | | * @param int $mode Fetch mode identifier |
| | | * |
| | | * @return mixed Array with col values or false on failure |
| | | */ |
| | | protected function _fetch_row($result, $mode) |
| | | { |
| | | if (!is_object($result) || !$this->is_connected()) { |
| | | return false; |
| | | if ($result || ($result === null && ($result = $this->last_result))) { |
| | | return $result->fetch($mode); |
| | | } |
| | | |
| | | return $result->fetch($mode); |
| | | return false; |
| | | } |
| | | |
| | | /** |
| | |
| | | if ($this->tables === null) { |
| | | $q = $this->query('SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES ORDER BY TABLE_NAME'); |
| | | |
| | | if ($res = $this->_get_result($q)) { |
| | | $this->tables = $res->fetchAll(PDO::FETCH_COLUMN, 0); |
| | | if ($q) { |
| | | $this->tables = $q->fetchAll(PDO::FETCH_COLUMN, 0); |
| | | } |
| | | else { |
| | | $this->tables = array(); |
| | |
| | | $q = $this->query('SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = ?', |
| | | array($table)); |
| | | |
| | | if ($res = $this->_get_result($q)) { |
| | | return $res->fetchAll(PDO::FETCH_COLUMN, 0); |
| | | if ($q) { |
| | | return $q->fetchAll(PDO::FETCH_COLUMN, 0); |
| | | } |
| | | |
| | | return array(); |
| | |
| | | * Formats input so it can be safely used in a query |
| | | * |
| | | * @param mixed $input Value to quote |
| | | * @param string $type Type of data |
| | | * @param string $type Type of data (integer, bool, ident) |
| | | * |
| | | * @return string Quoted/converted string for use in query |
| | | */ |
| | |
| | | |
| | | if (is_null($input)) { |
| | | return 'NULL'; |
| | | } |
| | | |
| | | if ($type == 'ident') { |
| | | return $this->quote_identifier($input); |
| | | } |
| | | |
| | | // create DB handle if not available |
| | |
| | | * @param string $str Value to quote |
| | | * |
| | | * @return string Quoted string for use in query |
| | | * @deprecated Replaced by rcube_db::quote |
| | | * @see rcube_db::quote |
| | | */ |
| | | public function simpleEscape($str) |
| | | { |
| | | return $this->quote($str); |
| | | } |
| | | |
| | | /** |
| | | * Quotes a string so it can be safely used as a table or column name |
| | | * |
| | | * @param string $str Value to quote |
| | | * |
| | | * @return string Quoted string for use in query |
| | | */ |
| | | public function quote_identifier($str) |
| | | { |
| | |
| | | $name[] = $start . $elem . $end; |
| | | } |
| | | |
| | | return implode($name, '.'); |
| | | return implode($name, '.'); |
| | | } |
| | | |
| | | /** |
| | |
| | | * Return list of elements for use with SQL's IN clause |
| | | * |
| | | * @param array $arr Input array |
| | | * @param string $type Type of data |
| | | * @param string $type Type of data (integer, bool, ident) |
| | | * |
| | | * @return string Comma-separated list of quoted values for use in query |
| | | */ |
| | |
| | | } |
| | | |
| | | return utf8_decode($input); |
| | | } |
| | | |
| | | /** |
| | | * Adds a query result and returns a handle ID |
| | | * |
| | | * @param object $res Query handle |
| | | * |
| | | * @return int Handle ID |
| | | */ |
| | | protected function _add_result($res) |
| | | { |
| | | $this->last_res_id = sizeof($this->a_query_results); |
| | | $this->a_query_results[$this->last_res_id] = $res; |
| | | |
| | | return $this->last_res_id; |
| | | } |
| | | |
| | | /** |
| | | * Resolves a given handle ID and returns the according query handle |
| | | * If no ID is specified, the last resource handle will be returned |
| | | * |
| | | * @param int $res_id Handle ID |
| | | * |
| | | * @return mixed Resource handle or false on failure |
| | | */ |
| | | protected function _get_result($res_id = null) |
| | | { |
| | | if ($res_id == null) { |
| | | $res_id = $this->last_res_id; |
| | | } |
| | | |
| | | if (!empty($this->a_query_results[$res_id])) { |
| | | return $this->a_query_results[$res_id]; |
| | | } |
| | | |
| | | return false; |
| | | } |
| | | |
| | | /** |