diff options
author | Florian Pritz <bluewind@xinu.at> | 2017-09-09 16:05:22 +0200 |
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committer | Florian Pritz <bluewind@xinu.at> | 2017-09-09 16:05:22 +0200 |
commit | 27639d64d06b62f237bbde253c46cd28fdce8884 (patch) | |
tree | 7a2f00cfd44cfcdfe6cb1abc1cfc0675632948c4 /system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php | |
parent | 9c5bfbee5b42ea50a5611c537b8dbf01d7a64f79 (diff) | |
parent | 6c7a4266410070d30f8f6bcdf9c9e67f3d6478e3 (diff) |
Merge tag '3.1.5' into dev-ci3
Signed-off-by: Florian Pritz <bluewind@xinu.at>
Diffstat (limited to 'system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php')
-rw-r--r-- | system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php new file mode 100644 index 000000000..64b13d827 --- /dev/null +++ b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php @@ -0,0 +1,374 @@ +<?php +/** + * CodeIgniter + * + * An open source application development framework for PHP + * + * This content is released under the MIT License (MIT) + * + * Copyright (c) 2014 - 2017, British Columbia Institute of Technology + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * @package CodeIgniter + * @author EllisLab Dev Team + * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) + * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/) + * @license http://opensource.org/licenses/MIT MIT License + * @link https://codeigniter.com + * @since Version 3.0.0 + * @filesource + */ +defined('BASEPATH') OR exit('No direct script access allowed'); + +/** + * PDO MySQL Database Adapter Class + * + * Note: _DB is an extender class that the app controller + * creates dynamically based on whether the query builder + * class is being used or not. + * + * @package CodeIgniter + * @subpackage Drivers + * @category Database + * @author EllisLab Dev Team + * @link https://codeigniter.com/user_guide/database/ + */ +class CI_DB_pdo_mysql_driver extends CI_DB_pdo_driver { + + /** + * Sub-driver + * + * @var string + */ + public $subdriver = 'mysql'; + + /** + * Compression flag + * + * @var bool + */ + public $compress = FALSE; + + /** + * Strict ON flag + * + * Whether we're running in strict SQL mode. + * + * @var bool + */ + public $stricton; + + // -------------------------------------------------------------------- + + /** + * Identifier escape character + * + * @var string + */ + protected $_escape_char = '`'; + + // -------------------------------------------------------------------- + + /** + * Class constructor + * + * Builds the DSN if not already set. + * + * @param array $params + * @return void + */ + public function __construct($params) + { + parent::__construct($params); + + if (empty($this->dsn)) + { + $this->dsn = 'mysql:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname); + + empty($this->port) OR $this->dsn .= ';port='.$this->port; + empty($this->database) OR $this->dsn .= ';dbname='.$this->database; + empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set; + } + elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE) + { + $this->dsn .= ';charset='.$this->char_set; + } + } + + // -------------------------------------------------------------------- + + /** + * Database connection + * + * @param bool $persistent + * @return object + */ + public function db_connect($persistent = FALSE) + { + if (isset($this->stricton)) + { + if ($this->stricton) + { + $sql = 'CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")'; + } + else + { + $sql = 'REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE( + @@sql_mode, + "STRICT_ALL_TABLES,", ""), + ",STRICT_ALL_TABLES", ""), + "STRICT_ALL_TABLES", ""), + "STRICT_TRANS_TABLES,", ""), + ",STRICT_TRANS_TABLES", ""), + "STRICT_TRANS_TABLES", "")'; + } + + if ( ! empty($sql)) + { + if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND])) + { + $this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode = '.$sql; + } + else + { + $this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = '.$sql; + } + } + } + + if ($this->compress === TRUE) + { + $this->options[PDO::MYSQL_ATTR_COMPRESS] = TRUE; + } + + if (is_array($this->encrypt)) + { + $ssl = array(); + empty($this->encrypt['ssl_key']) OR $ssl[PDO::MYSQL_ATTR_SSL_KEY] = $this->encrypt['ssl_key']; + empty($this->encrypt['ssl_cert']) OR $ssl[PDO::MYSQL_ATTR_SSL_CERT] = $this->encrypt['ssl_cert']; + empty($this->encrypt['ssl_ca']) OR $ssl[PDO::MYSQL_ATTR_SSL_CA] = $this->encrypt['ssl_ca']; + empty($this->encrypt['ssl_capath']) OR $ssl[PDO::MYSQL_ATTR_SSL_CAPATH] = $this->encrypt['ssl_capath']; + empty($this->encrypt['ssl_cipher']) OR $ssl[PDO::MYSQL_ATTR_SSL_CIPHER] = $this->encrypt['ssl_cipher']; + + // DO NOT use array_merge() here! + // It re-indexes numeric keys and the PDO_MYSQL_ATTR_SSL_* constants are integers. + empty($ssl) OR $this->options += $ssl; + } + + // Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails + if ( + ($pdo = parent::db_connect($persistent)) !== FALSE + && ! empty($ssl) + && version_compare($pdo->getAttribute(PDO::ATTR_CLIENT_VERSION), '5.7.3', '<=') + && empty($pdo->query("SHOW STATUS LIKE 'ssl_cipher'")->fetchObject()->Value) + ) + { + $message = 'PDO_MYSQL was configured for an SSL connection, but got an unencrypted connection instead!'; + log_message('error', $message); + return ($this->db_debug) ? $this->display_error($message, '', TRUE) : FALSE; + } + + return $pdo; + } + + // -------------------------------------------------------------------- + + /** + * Select the database + * + * @param string $database + * @return bool + */ + public function db_select($database = '') + { + if ($database === '') + { + $database = $this->database; + } + + if (FALSE !== $this->simple_query('USE '.$this->escape_identifiers($database))) + { + $this->database = $database; + $this->data_cache = array(); + return TRUE; + } + + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Begin Transaction + * + * @return bool + */ + protected function _trans_begin() + { + $this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, FALSE); + return $this->conn_id->beginTransaction(); + } + + // -------------------------------------------------------------------- + + /** + * Commit Transaction + * + * @return bool + */ + protected function _trans_commit() + { + if ($this->conn_id->commit()) + { + $this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, TRUE); + return TRUE; + } + + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Rollback Transaction + * + * @return bool + */ + protected function _trans_rollback() + { + if ($this->conn_id->rollBack()) + { + $this->conn_id->setAttribute(PDO::ATTR_AUTOCOMMIT, TRUE); + return TRUE; + } + + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Show table query + * + * Generates a platform-specific query string so that the table names can be fetched + * + * @param bool $prefix_limit + * @return string + */ + protected function _list_tables($prefix_limit = FALSE) + { + $sql = 'SHOW TABLES'; + + if ($prefix_limit === TRUE && $this->dbprefix !== '') + { + return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'"; + } + + return $sql; + } + + // -------------------------------------------------------------------- + + /** + * Show column query + * + * Generates a platform-specific query string so that the column names can be fetched + * + * @param string $table + * @return string + */ + protected function _list_columns($table = '') + { + return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE); + } + + // -------------------------------------------------------------------- + + /** + * Returns an object with field data + * + * @param string $table + * @return array + */ + public function field_data($table) + { + if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE) + { + return FALSE; + } + $query = $query->result_object(); + + $retval = array(); + for ($i = 0, $c = count($query); $i < $c; $i++) + { + $retval[$i] = new stdClass(); + $retval[$i]->name = $query[$i]->Field; + + sscanf($query[$i]->Type, '%[a-z](%d)', + $retval[$i]->type, + $retval[$i]->max_length + ); + + $retval[$i]->default = $query[$i]->Default; + $retval[$i]->primary_key = (int) ($query[$i]->Key === 'PRI'); + } + + return $retval; + } + + // -------------------------------------------------------------------- + + /** + * Truncate statement + * + * Generates a platform-specific truncate string from the supplied data + * + * If the database does not support the TRUNCATE statement, + * then this method maps to 'DELETE FROM table' + * + * @param string $table + * @return string + */ + protected function _truncate($table) + { + return 'TRUNCATE '.$table; + } + + // -------------------------------------------------------------------- + + /** + * FROM tables + * + * Groups tables in FROM clauses if needed, so there is no confusion + * about operator precedence. + * + * @return string + */ + protected function _from_tables() + { + if ( ! empty($this->qb_join) && count($this->qb_from) > 1) + { + return '('.implode(', ', $this->qb_from).')'; + } + + return implode(', ', $this->qb_from); + } + +} |