CI_DB_pdo_mysql_driver::db_connect() - Code Metrics - ci-bonfire/Sprint - Measure and Improve Code Quality continuously with Scrutinizer

CI_DB_pdo_mysql_driver::db_connect() F
last analyzed 2016-08-09 21:23 UTC

↳ Parent: CI_DB_pdo_mysql_driver

Complexity

Conditions	22
Paths	8190

Size

Total Lines	79
Code Lines	33

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	2

Metric	Value
cc	22
eloc	33
nc	8190
nop	1
dl	0
loc	79
rs	2.2578
c	2
b	0
f	2

How to fix Long Method Complexity

<?php

/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2015, 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. (http://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	http://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		http://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 && is_php('5.3.6'))
		{
			$this->dsn .= ';charset='.$this->char_set;
		}
	}

	// --------------------------------------------------------------------

	/**
	 * Database connection
	 *
	 * @param	bool	$persistent
	 * @return	object
	 */
	public function db_connect($persistent = FALSE)
	{
		/* Prior to PHP 5.3.6, even if the charset was supplied in the DSN
		 * on connect - it was ignored. This is a work-around for the issue.
		 *
		 * Reference: http://www.php.net/manual/en/ref.pdo-mysql.connection.php
		 */
		if ( ! is_php('5.3.6') && ! empty($this->char_set))
		{
			$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES '.$this->char_set
				.(empty($this->dbcollat) ? '' : ' COLLATE '.$this->dbcollat);
		}

		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;
		}

		// SSL support was added to PDO_MYSQL in PHP 5.3.7
		if (is_array($this->encrypt) && is_php('5.3.7'))
		{
			$ssl = array();
			empty($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->db_debug) ? $this->db->display_error($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;
			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);
	}

}


1		<?php
		0 ignored issues – show Coding Style Compatibility introduced 2016-02-16 16:43 UTC by Report Bug Copy Issue Report For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 53 and the first side effect is on line 38. The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file. The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place. To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1. Loading history...
2		/**
3		* CodeIgniter
4		*
5		* An open source application development framework for PHP
6		*
7		* This content is released under the MIT License (MIT)
8		*
9		* Copyright (c) 2014 - 2015, British Columbia Institute of Technology
10		*
11		* Permission is hereby granted, free of charge, to any person obtaining a copy
12		* of this software and associated documentation files (the "Software"), to deal
13		* in the Software without restriction, including without limitation the rights
14		* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15		* copies of the Software, and to permit persons to whom the Software is
16		* furnished to do so, subject to the following conditions:
17		*
18		* The above copyright notice and this permission notice shall be included in
19		* all copies or substantial portions of the Software.
20		*
21		* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22		* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23		* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24		* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25		* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26		* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27		* THE SOFTWARE.
28		*
29		* @package CodeIgniter
30		* @author EllisLab Dev Team
31		* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
32		* @copyright Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
33		* @license http://opensource.org/licenses/MIT MIT License
34		* @link http://codeigniter.com
35		* @since Version 3.0.0
36		* @filesource
37		*/
38		defined('BASEPATH') OR exit('No direct script access allowed');
39
40		/**
41		* PDO MySQL Database Adapter Class
42		*
43		* Note: _DB is an extender class that the app controller
44		* creates dynamically based on whether the query builder
45		* class is being used or not.
46		*
47		* @package CodeIgniter
48		* @subpackage Drivers
49		* @category Database
50		* @author EllisLab Dev Team
51		* @link http://codeigniter.com/user_guide/database/
52		*/
53		class CI_DB_pdo_mysql_driver extends CI_DB_pdo_driver {
54
55		/**
56		* Sub-driver
57		*
58		* @var string
59		*/
60		public $subdriver = 'mysql';
61
62		/**
63		* Compression flag
64		*
65		* @var bool
66		*/
67		public $compress = FALSE;
68
69		/**
70		* Strict ON flag
71		*
72		* Whether we're running in strict SQL mode.
73		*
74		* @var bool
75		*/
76		public $stricton;
77
78		// --------------------------------------------------------------------
79
80		/**
81		* Identifier escape character
82		*
83		* @var string
84		*/
85		protected $_escape_char = '`';
86
87		// --------------------------------------------------------------------
88
89		/**
90		* Class constructor
91		*
92		* Builds the DSN if not already set.
93		*
94		* @param array $params
95		* @return void
96		*/
97	View Code Duplication	public function __construct($params)
98		{
99		parent::__construct($params);
100
101		if (empty($this->dsn))
102		{
103		$this->dsn = 'mysql:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
104
105		empty($this->port) OR $this->dsn .= ';port='.$this->port;
106		empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
107		empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
108		}
109		elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE && is_php('5.3.6'))
110		{
111		$this->dsn .= ';charset='.$this->char_set;
112		}
113		}
114
115		// --------------------------------------------------------------------
116
117		/**
118		* Database connection
119		*
120		* @param bool $persistent
121		* @return object
122		*/
123		public function db_connect($persistent = FALSE)
124		{
125		/* Prior to PHP 5.3.6, even if the charset was supplied in the DSN
126		* on connect - it was ignored. This is a work-around for the issue.
127		*
128		* Reference: http://www.php.net/manual/en/ref.pdo-mysql.connection.php
129		*/
130		if ( ! is_php('5.3.6') && ! empty($this->char_set))
131		{
132		$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES '.$this->char_set
133		.(empty($this->dbcollat) ? '' : ' COLLATE '.$this->dbcollat);
134		}
135
136		if (isset($this->stricton))
137		{
138		if ($this->stricton)
139		{
140		$sql = 'CONCAT(@@sql_mode, ",", "STRICT_ALL_TABLES")';
141		}
142		else
143		{
144		$sql = 'REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(
145		@@sql_mode,
146		"STRICT_ALL_TABLES,", ""),
147		",STRICT_ALL_TABLES", ""),
148		"STRICT_ALL_TABLES", ""),
149		"STRICT_TRANS_TABLES,", ""),
150		",STRICT_TRANS_TABLES", ""),
151		"STRICT_TRANS_TABLES", "")';
152		}
153
154		if ( ! empty($sql))
155		{
156		if (empty($this->options[PDO::MYSQL_ATTR_INIT_COMMAND]))
157		{
158		$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET SESSION sql_mode = '.$sql;
159		}
160		else
161		{
162		$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= ', @@session.sql_mode = '.$sql;
163		}
164		}
165		}
166
167		if ($this->compress === TRUE)
168		{
169		$this->options[PDO::MYSQL_ATTR_COMPRESS] = TRUE;
170		}
171
172		// SSL support was added to PDO_MYSQL in PHP 5.3.7
173		if (is_array($this->encrypt) && is_php('5.3.7'))
174		{
175		$ssl = array();
176		empty($this->encrypt['ssl_key']) OR $ssl[PDO::MYSQL_ATTR_SSL_KEY] = $this->encrypt['ssl_key'];
177		empty($this->encrypt['ssl_cert']) OR $ssl[PDO::MYSQL_ATTR_SSL_CERT] = $this->encrypt['ssl_cert'];
178		empty($this->encrypt['ssl_ca']) OR $ssl[PDO::MYSQL_ATTR_SSL_CA] = $this->encrypt['ssl_ca'];
179		empty($this->encrypt['ssl_capath']) OR $ssl[PDO::MYSQL_ATTR_SSL_CAPATH] = $this->encrypt['ssl_capath'];
180		empty($this->encrypt['ssl_cipher']) OR $ssl[PDO::MYSQL_ATTR_SSL_CIPHER] = $this->encrypt['ssl_cipher'];
181
182		// DO NOT use array_merge() here!
		0 ignored issues – show Unused Code Comprehensibility introduced 2016-02-16 16:43 UTC by Report Bug Copy Issue Report `39%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
183		// It re-indexes numeric keys and the PDO_MYSQL_ATTR_SSL_* constants are integers.
184		empty($ssl) OR $this->options += $ssl;
185		}
186
187		// Prior to version 5.7.3, MySQL silently downgrades to an unencrypted connection if SSL setup fails
188		if (
189		($pdo = parent::db_connect($persistent)) !== FALSE
		0 ignored issues – show Comprehensibility Best Practice introduced 2016-02-16 16:43 UTC by Report Bug Copy Issue Report The expression `parent::db_connect($persistent);` of type `PDO\|false` adds `false` to the return on line 200 which is incompatible with the return type documented by `CI_DB_pdo_mysql_driver::db_connect` of type `object`. It seems like you forgot to handle an error condition. Loading history...
190		&& ! empty($ssl)
191		&& version_compare($pdo->getAttribute(PDO::ATTR_CLIENT_VERSION), '5.7.3', '<=')
192		&& empty($pdo->query("SHOW STATUS LIKE 'ssl_cipher'")->fetchObject()->Value)
193		)
194		{
195		$message = 'PDO_MYSQL was configured for an SSL connection, but got an unencrypted connection instead!';
196		log_message('error', $message);
197		return ($this->db->db_debug) ? $this->db->display_error($message, '', TRUE) : FALSE;
198		}
199
200		return $pdo;
201		}
202
203		// --------------------------------------------------------------------
204
205		/**
206		* Select the database
207		*
208		* @param string $database
209		* @return bool
210		*/
211	View Code Duplication	public function db_select($database = '')
212		{
213		if ($database === '')
214		{
215		$database = $this->database;
216		}
217
218		if (FALSE !== $this->simple_query('USE '.$this->escape_identifiers($database)))
219		{
220		$this->database = $database;
221		return TRUE;
222		}
223
224		return FALSE;
225		}
226
227		// --------------------------------------------------------------------
228
229		/**
230		* Show table query
231		*
232		* Generates a platform-specific query string so that the table names can be fetched
233		*
234		* @param bool $prefix_limit
235		* @return string
236		*/
237		protected function _list_tables($prefix_limit = FALSE)
238		{
239		$sql = 'SHOW TABLES';
240
241		if ($prefix_limit === TRUE && $this->dbprefix !== '')
242		{
243		return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
244		}
245
246		return $sql;
247		}
248
249		// --------------------------------------------------------------------
250
251		/**
252		* Show column query
253		*
254		* Generates a platform-specific query string so that the column names can be fetched
255		*
256		* @param string $table
257		* @return string
258		*/
259		protected function _list_columns($table = '')
260		{
261		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
262		}
263
264		// --------------------------------------------------------------------
265
266		/**
267		* Returns an object with field data
268		*
269		* @param string $table
270		* @return array
271		*/
272	View Code Duplication	public function field_data($table)
273		{
274		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
275		{
276		return FALSE;
277		}
278		$query = $query->result_object();
279
280		$retval = array();
281		for ($i = 0, $c = count($query); $i < $c; $i++)
282		{
283		$retval[$i] = new stdClass();
284		$retval[$i]->name = $query[$i]->Field;
285
286		sscanf($query[$i]->Type, '%[a-z](%d)',
287		$retval[$i]->type,
288		$retval[$i]->max_length
289		);
290
291		$retval[$i]->default = $query[$i]->Default;
292		$retval[$i]->primary_key = (int) ($query[$i]->Key === 'PRI');
293		}
294
295		return $retval;
296		}
297
298		// --------------------------------------------------------------------
299
300		/**
301		* Truncate statement
302		*
303		* Generates a platform-specific truncate string from the supplied data
304		*
305		* If the database does not support the TRUNCATE statement,
306		* then this method maps to 'DELETE FROM table'
307		*
308		* @param string $table
309		* @return string
310		*/
311		protected function _truncate($table)
312		{
313		return 'TRUNCATE '.$table;
314		}
315
316		// --------------------------------------------------------------------
317
318		/**
319		* FROM tables
320		*
321		* Groups tables in FROM clauses if needed, so there is no confusion
322		* about operator precedence.
323		*
324		* @return string
325		*/
326	View Code Duplication	protected function _from_tables()
327		{
328		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
329		{
330		return '('.implode(', ', $this->qb_from).')';
331		}
332
333		return implode(', ', $this->qb_from);
334		}
335
336		}
337

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CI_DB_pdo_mysql_driver::db_connect() F last analyzed 2016-08-09 21:23 UTC

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

Long Method

Duplication Side-by-Side

Filter issues like

CI_DB_pdo_mysql_driver::db_connect() F
last analyzed 2016-08-09 21:23 UTC