381 lines
9.9 KiB
PHP
381 lines
9.9 KiB
PHP
<?php
|
|
/**
|
|
* CodeIgniter
|
|
*
|
|
* An open source application development framework for PHP
|
|
*
|
|
* This content is released under the MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2019 - 2022, CodeIgniter Foundation
|
|
*
|
|
* 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 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
|
|
* @copyright Copyright (c) 2019 - 2022, CodeIgniter Foundation (https://codeigniter.com/)
|
|
* @license https://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/userguide3/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] = $this->encrypt['ssl_cipher'];
|
|
|
|
if (defined('PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT') && isset($this->encrypt['ssl_verify']))
|
|
{
|
|
$ssl[PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT] = $this->encrypt['ssl_verify'];
|
|
}
|
|
|
|
// DO NOT use array_merge() here!
|
|
// It re-indexes numeric keys and the PDO_MYSQL_ATTR_SSL_* constants are integers.
|
|
empty($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)
|
|
{
|
|
$sql = 'SHOW TABLES FROM '.$this->_escape_char.$this->database.$this->_escape_char;
|
|
|
|
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);
|
|
}
|
|
|
|
}
|