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joomla.php000064400000036406152346317060006556 0ustar00<?php
/**
 * @package     FrameworkOnFramework
 * @subpackage  database
 * @copyright   Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 * @note        This file has been modified by the Joomla! Project and no longer reflects the original work of its author.
 *
 * This file is adapted from the Joomla! Platform. It is used to iterate a database cursor returning FOFTable objects
 * instead of plain stdClass objects
 */

// Protect from unauthorized access
defined('FOF_INCLUDED') or die;

/**
 * This crazy three line bit is required to convince Joomla! to load JDatabaseInterface which is on the same file as the
 * abstract JDatabaseDriver class for reasons that beat me. It makes no sense. Furthermore, jimport on Joomla! 3.4
 * doesn't seem to actually load the file, merely registering the association in the autoloader. Hence the class_exists
 * in here.
 */
jimport('joomla.database.driver');
jimport('joomla.database.driver.mysqli');
class_exists('JDatabaseDriver', true);

/**
 * Joomla! pass-through database driver.
 */
class FOFDatabaseDriverJoomla extends FOFDatabase implements FOFDatabaseInterface
{
	/** @var FOFDatabase The real database connection object */
	private $dbo;

	/**
	 * @var    string  The character(s) used to quote SQL statement names such as table names or field names,
	 *                 etc.  The child classes should define this as necessary.  If a single character string the
	 *                 same character is used for both sides of the quoted name, else the first character will be
	 *                 used for the opening quote and the second for the closing quote.
	 * @since  11.1
	 */
	protected $nameQuote = '';

	/**
	 * Is this driver supported
	 *
	 * @since  11.2
	 */
	public static function isSupported()
	{
		return true;
	}

	/**
	 * Database object constructor
	 *
	 * @param    array $options List of options used to configure the connection
	 */
	public function __construct($options = array())
	{
		// Get best matching Akeeba Backup driver instance
		$this->dbo = JFactory::getDbo();

		$reflection = new ReflectionClass($this->dbo);

		try
		{
			$refProp = $reflection->getProperty('nameQuote');
			$refProp->setAccessible(true);
			$this->nameQuote = $refProp->getValue($this->dbo);
		}
		catch (Exception $e)
		{
			$this->nameQuote = '`';
		}
	}

	public function close()
	{
		if (method_exists($this->dbo, 'close'))
		{
			$this->dbo->close();
		}
		elseif (method_exists($this->dbo, 'disconnect'))
		{
			$this->dbo->disconnect();
		}
	}

	public function disconnect()
	{
		$this->close();
	}

	public function open()
	{
		if (method_exists($this->dbo, 'open'))
		{
			$this->dbo->open();
		}
		elseif (method_exists($this->dbo, 'connect'))
		{
			$this->dbo->connect();
		}
	}

	public function connect()
	{
		$this->open();
	}

	public function connected()
	{
		if (method_exists($this->dbo, 'connected'))
		{
			return $this->dbo->connected();
		}

		return true;
	}

	public function escape($text, $extra = false)
	{
		return $this->dbo->escape($text, $extra);
	}

	public function execute()
	{
		if (method_exists($this->dbo, 'execute'))
		{
			return $this->dbo->execute();
		}

		return $this->dbo->query();
	}

	public function getAffectedRows()
	{
		if (method_exists($this->dbo, 'getAffectedRows'))
		{
			return $this->dbo->getAffectedRows();
		}

		return 0;
	}

	public function getCollation()
	{
		if (method_exists($this->dbo, 'getCollation'))
		{
			return $this->dbo->getCollation();
		}

		return 'utf8_general_ci';
	}

	public function getConnection()
	{
		if (method_exists($this->dbo, 'getConnection'))
		{
			return $this->dbo->getConnection();
		}

		return null;
	}

	public function getCount()
	{
		if (method_exists($this->dbo, 'getCount'))
		{
			return $this->dbo->getCount();
		}

		return 0;
	}

	public function getDateFormat()
	{
		if (method_exists($this->dbo, 'getDateFormat'))
		{
			return $this->dbo->getDateFormat();
		}

		return 'Y-m-d H:i:s';;
	}

	public function getMinimum()
	{
		if (method_exists($this->dbo, 'getMinimum'))
		{
			return $this->dbo->getMinimum();
		}

		return '5.0.40';
	}

	public function getNullDate()
	{
		if (method_exists($this->dbo, 'getNullDate'))
		{
			return $this->dbo->getNullDate();
		}

		return '0000-00-00 00:00:00';
	}

	public function getNumRows($cursor = null)
	{
		if (method_exists($this->dbo, 'getNumRows'))
		{
			return $this->dbo->getNumRows($cursor);
		}

		return 0;
	}

	public function getQuery($new = false)
	{
		if (method_exists($this->dbo, 'getQuery'))
		{
			return $this->dbo->getQuery($new);
		}

		return null;
	}

	public function getTableColumns($table, $typeOnly = true)
	{
		if (method_exists($this->dbo, 'getTableColumns'))
		{
			return $this->dbo->getTableColumns($table, $typeOnly);
		}

		$result = $this->dbo->getTableFields(array($table), $typeOnly);

		return $result[$table];
	}

	public function getTableKeys($tables)
	{
		if (method_exists($this->dbo, 'getTableKeys'))
		{
			return $this->dbo->getTableKeys($tables);
		}

		return array();
	}

	public function getTableList()
	{
		if (method_exists($this->dbo, 'getTableList'))
		{
			return $this->dbo->getTableList();
		}

		return array();
	}

	public function getVersion()
	{
		if (method_exists($this->dbo, 'getVersion'))
		{
			return $this->dbo->getVersion();
		}

		return '5.0.40';
	}

	public function insertid()
	{
		if (method_exists($this->dbo, 'insertid'))
		{
			return $this->dbo->insertid();
		}

		return null;
	}

	public function insertObject($table, &$object, $key = null)
	{
		if (method_exists($this->dbo, 'insertObject'))
		{
			return $this->dbo->insertObject($table, $object, $key);
		}

		return null;
	}

	public function loadAssoc()
	{
		if (method_exists($this->dbo, 'loadAssoc'))
		{
			return $this->dbo->loadAssoc();
		}

		return null;
	}

	public function loadAssocList($key = null, $column = null)
	{
		if (method_exists($this->dbo, 'loadAssocList'))
		{
			return $this->dbo->loadAssocList($key, $column);
		}

		return null;
	}

	public function loadObject($class = 'stdClass')
	{
		if (method_exists($this->dbo, 'loadObject'))
		{
			return $this->dbo->loadObject($class);
		}

		return null;
	}

	public function loadObjectList($key = '', $class = 'stdClass')
	{
		if (method_exists($this->dbo, 'loadObjectList'))
		{
			return $this->dbo->loadObjectList($key, $class);
		}

		return null;
	}

	public function loadResult()
	{
		if (method_exists($this->dbo, 'loadResult'))
		{
			return $this->dbo->loadResult();
		}

		return null;
	}

	public function loadRow()
	{
		if (method_exists($this->dbo, 'loadRow'))
		{
			return $this->dbo->loadRow();
		}

		return null;
	}

	public function loadRowList($key = null)
	{
		if (method_exists($this->dbo, 'loadRowList'))
		{
			return $this->dbo->loadRowList($key);
		}

		return null;
	}

	public function lockTable($tableName)
	{
		if (method_exists($this->dbo, 'lockTable'))
		{
			return $this->dbo->lockTable($this);
		}

		return $this;
	}

	public function quote($text, $escape = true)
	{
		if (method_exists($this->dbo, 'quote'))
		{
			return $this->dbo->quote($text, $escape);
		}

		return $text;
	}

	public function select($database)
	{
		if (method_exists($this->dbo, 'select'))
		{
			return $this->dbo->select($database);
		}

		return false;
	}

	public function setQuery($query, $offset = 0, $limit = 0)
	{
		if (method_exists($this->dbo, 'setQuery'))
		{
			return $this->dbo->setQuery($query, $offset, $limit);
		}

		return false;
	}

	public function transactionCommit($toSavepoint = false)
	{
		if (method_exists($this->dbo, 'transactionCommit'))
		{
			$this->dbo->transactionCommit($toSavepoint);
		}
	}

	public function transactionRollback($toSavepoint = false)
	{
		if (method_exists($this->dbo, 'transactionRollback'))
		{
			$this->dbo->transactionRollback($toSavepoint);
		}
	}

	public function transactionStart($asSavepoint = false)
	{
		if (method_exists($this->dbo, 'transactionStart'))
		{
			$this->dbo->transactionStart($asSavepoint);
		}
	}

	public function unlockTables()
	{
		if (method_exists($this->dbo, 'unlockTables'))
		{
			return $this->dbo->unlockTables();
		}

		return $this;
	}

	public function updateObject($table, &$object, $key, $nulls = false)
	{
		if (method_exists($this->dbo, 'updateObject'))
		{
			return $this->dbo->updateObject($table, $object, $key, $nulls);
		}

		return false;
	}

	public function getLog()
	{
		if (method_exists($this->dbo, 'getLog'))
		{
			return $this->dbo->getLog();
		}

		return array();
	}

	public function dropTable($table, $ifExists = true)
	{
		if (method_exists($this->dbo, 'dropTable'))
		{
			return $this->dbo->dropTable($table, $ifExists);
		}

		return $this;
	}

	public function getTableCreate($tables)
	{
		if (method_exists($this->dbo, 'getTableCreate'))
		{
			return $this->dbo->getTableCreate($tables);
		}

		return array();
	}

	public function renameTable($oldTable, $newTable, $backup = null, $prefix = null)
	{
		if (method_exists($this->dbo, 'renameTable'))
		{
			return $this->dbo->renameTable($oldTable, $newTable, $backup, $prefix);
		}

		return $this;
	}

	public function setUtf()
	{
		if (method_exists($this->dbo, 'setUtf'))
		{
			return $this->dbo->setUtf();
		}

		return false;
	}


	protected function freeResult($cursor = null)
	{
		return false;
	}

	/**
	 * Method to get an array of values from the <var>$offset</var> field in each row of the result set from
	 * the database query.
	 *
	 * @param   integer  $offset  The row offset to use to build the result array.
	 *
	 * @return  mixed    The return value or null if the query failed.
	 *
	 * @since   11.1
	 * @throws  RuntimeException
	 */
	public function loadColumn($offset = 0)
	{
		if (method_exists($this->dbo, 'loadColumn'))
		{
			return $this->dbo->loadColumn($offset);
		}

		return $this->dbo->loadResultArray($offset);
	}

	/**
	 * Wrap an SQL statement identifier name such as column, table or database names in quotes to prevent injection
	 * risks and reserved word conflicts.
	 *
	 * @param   mixed  $name  The identifier name to wrap in quotes, or an array of identifier names to wrap in quotes.
	 *                        Each type supports dot-notation name.
	 * @param   mixed  $as    The AS query part associated to $name. It can be string or array, in latter case it has to be
	 *                        same length of $name; if is null there will not be any AS part for string or array element.
	 *
	 * @return  mixed  The quote wrapped name, same type of $name.
	 *
	 * @since   11.1
	 */
	public function quoteName($name, $as = null)
	{
		if (is_string($name))
		{
			$quotedName = $this->quoteNameStr(explode('.', $name));

			$quotedAs = '';

			if (!is_null($as))
			{
				settype($as, 'array');
				$quotedAs .= ' AS ' . $this->quoteNameStr($as);
			}

			return $quotedName . $quotedAs;
		}
		else
		{
			$fin = array();

			if (is_null($as))
			{
				foreach ($name as $str)
				{
					$fin[] = $this->quoteName($str);
				}
			}
			elseif (is_array($name) && (count($name) == count($as)))
			{
				$count = count($name);

				for ($i = 0; $i < $count; $i++)
				{
					$fin[] = $this->quoteName($name[$i], $as[$i]);
				}
			}

			return $fin;
		}
	}

	/**
	 * Quote strings coming from quoteName call.
	 *
	 * @param   array  $strArr  Array of strings coming from quoteName dot-explosion.
	 *
	 * @return  string  Dot-imploded string of quoted parts.
	 *
	 * @since 11.3
	 */
	protected function quoteNameStr($strArr)
	{
		$parts = array();
		$q = $this->nameQuote;

		foreach ($strArr as $part)
		{
			if (is_null($part))
			{
				continue;
			}

			if (strlen($q) == 1)
			{
				$parts[] = $q . $part . $q;
			}
			else
			{
				$parts[] = $q[0] . $part . $q[1];
			}
		}

		return implode('.', $parts);
	}

	/**
	 * Gets the error message from the database connection.
	 *
	 * @param   boolean  $escaped  True to escape the message string for use in JavaScript.
	 *
	 * @return  string  The error message for the most recent query.
	 *
	 * @since   11.1
	 */
	public function getErrorMsg($escaped = false)
	{
		if (method_exists($this->dbo, 'getErrorMsg'))
		{
			$errorMessage = $this->dbo->getErrorMsg();
		}
		else
		{
			$errorMessage = $this->errorMsg;
		}

		if ($escaped)
		{
			return addslashes($errorMessage);
		}

		return $errorMessage;
	}

	/**
	 * Gets the error number from the database connection.
	 *
	 * @return      integer  The error number for the most recent query.
	 *
	 * @since       11.1
	 * @deprecated  13.3 (Platform) & 4.0 (CMS)
	 */
	public function getErrorNum()
	{
		if (method_exists($this->dbo, 'getErrorNum'))
		{
			$errorNum = $this->dbo->getErrorNum();
		}
		else
		{
			$errorNum = $this->getErrorNum;
		}

		return $errorNum;
	}

	/**
	 * Return the most recent error message for the database connector.
	 *
	 * @param   boolean  $showSQL  True to display the SQL statement sent to the database as well as the error.
	 *
	 * @return  string  The error message for the most recent query.
	 */
	public function stderr($showSQL = false)
	{
		if (method_exists($this->dbo, 'stderr'))
		{
			return $this->dbo->stderr($showSQL);
		}

		return parent::stderr($showSQL);
	}

	/**
	 * Magic method to proxy all calls to the loaded database driver object
	 */
	public function __call($name, array $arguments)
	{
		if (is_null($this->dbo))
		{
			throw new Exception('FOF database driver is not loaded');
		}

		if (method_exists($this->dbo, $name) || in_array($name, array('q', 'nq', 'qn', 'query')))
		{
			switch ($name)
			{
				case 'execute':
					$name = 'query';
					break;

				case 'q':
					$name = 'quote';
					break;

				case 'qn':
				case 'nq':
					switch (count($arguments))
					{
						case 0 :
							$result = $this->quoteName();
							break;
						case 1 :
							$result = $this->quoteName($arguments[0]);
							break;
						case 2:
						default:
							$result = $this->quoteName($arguments[0], $arguments[1]);
							break;
					}
					return $result;

					break;
			}

			switch (count($arguments))
			{
				case 0 :
					$result = $this->dbo->$name();
					break;
				case 1 :
					$result = $this->dbo->$name($arguments[0]);
					break;
				case 2:
					$result = $this->dbo->$name($arguments[0], $arguments[1]);
					break;
				case 3:
					$result = $this->dbo->$name($arguments[0], $arguments[1], $arguments[2]);
					break;
				case 4:
					$result = $this->dbo->$name($arguments[0], $arguments[1], $arguments[2], $arguments[3]);
					break;
				case 5:
					$result = $this->dbo->$name($arguments[0], $arguments[1], $arguments[2], $arguments[3], $arguments[4]);
					break;
				default:
					// Resort to using call_user_func_array for many segments
					$result = call_user_func_array(array($this->dbo, $name), $arguments);
			}

			if (class_exists('JDatabase') && is_object($result) && ($result instanceof JDatabase))
			{
				return $this;
			}

			return $result;
		}
		else
		{
			throw new \Exception('Method ' . $name . ' not found in FOFDatabase');
		}
	}

	public function __get($name)
	{
		if (isset($this->dbo->$name) || property_exists($this->dbo, $name))
		{
			return $this->dbo->$name;
		}
		else
		{
			$this->dbo->$name = null;
			user_error('Database driver does not support property ' . $name);
		}
	}

	public function __set($name, $value)
	{
		if (isset($this->dbo->name) || property_exists($this->dbo, $name))
		{
			$this->dbo->$name = $value;
		}
		else
		{
			$this->dbo->$name = null;
			user_error('Database driver not support property ' . $name);
		}
	}
}
mysql.php000064400000034116152346317060006436 0ustar00<?php
/**
 * @package     FrameworkOnFramework
 * @subpackage  database
 * @copyright   Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 *
 * This file is adapted from the Joomla! Platform. It is used to iterate a database cursor returning FOFTable objects
 * instead of plain stdClass objects
 */

// Protect from unauthorized access
defined('FOF_INCLUDED') or die;

/**
 * MySQL database driver
 *
 * @see         http://dev.mysql.com/doc/
 * @since       12.1
 * @deprecated  Will be removed when the minimum supported PHP version no longer includes the deprecated PHP `mysql` extension
 */
class FOFDatabaseDriverMysql extends FOFDatabaseDriverMysqli
{
	/**
	 * The name of the database driver.
	 *
	 * @var    string
	 * @since  12.1
	 */
	public $name = 'mysql';

	/**
	 * Constructor.
	 *
	 * @param   array  $options  Array of database options with keys: host, user, password, database, select.
	 *
	 * @since   12.1
	 */
	public function __construct($options)
	{
		// PHP's `mysql` extension is not present in PHP 7, block instantiation in this environment
		if (PHP_MAJOR_VERSION >= 7)
		{
			throw new RuntimeException(
				'This driver is unsupported in PHP 7, please use the MySQLi or PDO MySQL driver instead.'
			);
		}

		// Get some basic values from the options.
		$options['host'] = (isset($options['host'])) ? $options['host'] : 'localhost';
		$options['user'] = (isset($options['user'])) ? $options['user'] : 'root';
		$options['password'] = (isset($options['password'])) ? $options['password'] : '';
		$options['database'] = (isset($options['database'])) ? $options['database'] : '';
		$options['select'] = (isset($options['select'])) ? (bool) $options['select'] : true;

		// Finalize initialisation.
		parent::__construct($options);
	}

	/**
	 * Destructor.
	 *
	 * @since   12.1
	 */
	public function __destruct()
	{
		$this->disconnect();
	}

	/**
	 * Connects to the database if needed.
	 *
	 * @return  void  Returns void if the database connected successfully.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function connect()
	{
		if ($this->connection)
		{
			return;
		}

		// Make sure the MySQL extension for PHP is installed and enabled.
		if (!self::isSupported())
		{
			throw new RuntimeException('Could not connect to MySQL.');
		}

		// Attempt to connect to the server.
		if (!($this->connection = @ mysql_connect($this->options['host'], $this->options['user'], $this->options['password'], true)))
		{
			throw new RuntimeException('Could not connect to MySQL.');
		}

		// Set sql_mode to non_strict mode
		mysql_query("SET @@SESSION.sql_mode = '';", $this->connection);

		// If auto-select is enabled select the given database.
		if ($this->options['select'] && !empty($this->options['database']))
		{
			$this->select($this->options['database']);
		}

		// Pre-populate the UTF-8 Multibyte compatibility flag based on server version
		$this->utf8mb4 = $this->serverClaimsUtf8mb4Support();

		// Set the character set (needed for MySQL 4.1.2+).
		$this->utf = $this->setUtf();

		// Turn MySQL profiling ON in debug mode:
		if ($this->debug && $this->hasProfiling())
		{
			mysql_query("SET profiling = 1;", $this->connection);
		}
	}

	/**
	 * Disconnects the database.
	 *
	 * @return  void
	 *
	 * @since   12.1
	 */
	public function disconnect()
	{
		// Close the connection.
		if (is_resource($this->connection))
		{
			foreach ($this->disconnectHandlers as $h)
			{
				call_user_func_array($h, array( &$this));
			}

			mysql_close($this->connection);
		}

		$this->connection = null;
	}

	/**
	 * Method to escape a string for usage in an SQL statement.
	 *
	 * @param   string   $text   The string to be escaped.
	 * @param   boolean  $extra  Optional parameter to provide extra escaping.
	 *
	 * @return  string  The escaped string.
	 *
	 * @since   12.1
	 */
	public function escape($text, $extra = false)
	{
		$this->connect();

		$result = mysql_real_escape_string($text, $this->getConnection());

		if ($extra)
		{
			$result = addcslashes($result, '%_');
		}

		return $result;
	}

	/**
	 * Test to see if the MySQL connector is available.
	 *
	 * @return  boolean  True on success, false otherwise.
	 *
	 * @since   12.1
	 */
	public static function isSupported()
	{
		return (function_exists('mysql_connect'));
	}

	/**
	 * Determines if the connection to the server is active.
	 *
	 * @return  boolean  True if connected to the database engine.
	 *
	 * @since   12.1
	 */
	public function connected()
	{
		if (is_resource($this->connection))
		{
			return @mysql_ping($this->connection);
		}

		return false;
	}

	/**
	 * Get the number of affected rows by the last INSERT, UPDATE, REPLACE or DELETE for the previous executed SQL statement.
	 *
	 * @return  integer  The number of affected rows.
	 *
	 * @since   12.1
	 */
	public function getAffectedRows()
	{
		$this->connect();

		return mysql_affected_rows($this->connection);
	}

	/**
	 * Get the number of returned rows for the previous executed SQL statement.
	 * This command is only valid for statements like SELECT or SHOW that return an actual result set.
	 * To retrieve the number of rows affected by a INSERT, UPDATE, REPLACE or DELETE query, use getAffectedRows().
	 *
	 * @param   resource  $cursor  An optional database cursor resource to extract the row count from.
	 *
	 * @return  integer   The number of returned rows.
	 *
	 * @since   12.1
	 */
	public function getNumRows($cursor = null)
	{
		$this->connect();

		return mysql_num_rows($cursor ? $cursor : $this->cursor);
	}

	/**
	 * Get the version of the database connector.
	 *
	 * @return  string  The database connector version.
	 *
	 * @since   12.1
	 */
	public function getVersion()
	{
		$this->connect();

		return mysql_get_server_info($this->connection);
	}

	/**
	 * Method to get the auto-incremented value from the last INSERT statement.
	 *
	 * @return  integer  The value of the auto-increment field from the last inserted row.
	 *
	 * @since   12.1
	 */
	public function insertid()
	{
		$this->connect();

		return mysql_insert_id($this->connection);
	}

	/**
	 * Execute the SQL statement.
	 *
	 * @return  mixed  A database cursor resource on success, boolean false on failure.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function execute()
	{
		$this->connect();

		if (!is_resource($this->connection))
		{
			if (class_exists('JLog'))
			{
				JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database');
			}
			throw new RuntimeException($this->errorMsg, $this->errorNum);
		}

		// Take a local copy so that we don't modify the original query and cause issues later
		$query = $this->replacePrefix((string) $this->sql);

		if (!($this->sql instanceof FOFDatabaseQuery) && ($this->limit > 0 || $this->offset > 0))
		{
			$query .= ' LIMIT ' . $this->offset . ', ' . $this->limit;
		}

		// Increment the query counter.
		$this->count++;

		// Reset the error values.
		$this->errorNum = 0;
		$this->errorMsg = '';

		// If debugging is enabled then let's log the query.
		if ($this->debug)
		{
			// Add the query to the object queue.
			$this->log[] = $query;

			if (class_exists('JLog'))
			{
				JLog::add($query, JLog::DEBUG, 'databasequery');
			}

			$this->timings[] = microtime(true);
		}

		// Execute the query. Error suppression is used here to prevent warnings/notices that the connection has been lost.
		$this->cursor = @mysql_query($query, $this->connection);

		if ($this->debug)
		{
			$this->timings[] = microtime(true);

			if (defined('DEBUG_BACKTRACE_IGNORE_ARGS'))
			{
				$this->callStacks[] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
			}
			else
			{
				$this->callStacks[] = debug_backtrace();
			}
		}

		// If an error occurred handle it.
		if (!$this->cursor)
		{
			// Get the error number and message before we execute any more queries.
			$this->errorNum = $this->getErrorNumber();
			$this->errorMsg = $this->getErrorMessage($query);

			// Check if the server was disconnected.
			if (!$this->connected())
			{
				try
				{
					// Attempt to reconnect.
					$this->connection = null;
					$this->connect();
				}
				// If connect fails, ignore that exception and throw the normal exception.
				catch (RuntimeException $e)
				{
					// Get the error number and message.
					$this->errorNum = $this->getErrorNumber();
					$this->errorMsg = $this->getErrorMessage($query);

					// Throw the normal query exception.
					if (class_exists('JLog'))
					{
						JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
					}

					throw new RuntimeException($this->errorMsg, $this->errorNum, $e);
				}

				// Since we were able to reconnect, run the query again.
				return $this->execute();
			}
			// The server was not disconnected.
			else
			{
				// Throw the normal query exception.
				if (class_exists('JLog'))
				{
					JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
				}

				throw new RuntimeException($this->errorMsg, $this->errorNum);
			}
		}

		return $this->cursor;
	}

	/**
	 * Select a database for use.
	 *
	 * @param   string  $database  The name of the database to select for use.
	 *
	 * @return  boolean  True if the database was successfully selected.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function select($database)
	{
		$this->connect();

		if (!$database)
		{
			return false;
		}

		if (!mysql_select_db($database, $this->connection))
		{
			throw new RuntimeException('Could not connect to database');
		}

		return true;
	}

	/**
	 * Set the connection to use UTF-8 character encoding.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   12.1
	 */
	public function setUtf()
	{
		// If UTF is not supported return false immediately
		if (!$this->utf)
		{
			return false;
		}

		// Make sure we're connected to the server
		$this->connect();

		// Which charset should I use, plain utf8 or multibyte utf8mb4?
		$charset = $this->utf8mb4 ? 'utf8mb4' : 'utf8';

		$result = @mysql_set_charset($charset, $this->connection);

		/**
		 * If I could not set the utf8mb4 charset then the server doesn't support utf8mb4 despite claiming otherwise.
		 * This happens on old MySQL server versions (less than 5.5.3) using the mysqlnd PHP driver. Since mysqlnd
		 * masks the server version and reports only its own we can not be sure if the server actually does support
		 * UTF-8 Multibyte (i.e. it's MySQL 5.5.3 or later). Since the utf8mb4 charset is undefined in this case we
		 * catch the error and determine that utf8mb4 is not supported!
		 */
		if (!$result && $this->utf8mb4)
		{
			$this->utf8mb4 = false;
			$result = @mysql_set_charset('utf8', $this->connection);
		}

		return $result;
	}

	/**
	 * Method to fetch a row from the result set cursor as an array.
	 *
	 * @param   mixed  $cursor  The optional result set cursor from which to fetch the row.
	 *
	 * @return  mixed  Either the next row from the result set or false if there are no more rows.
	 *
	 * @since   12.1
	 */
	protected function fetchArray($cursor = null)
	{
		return mysql_fetch_row($cursor ? $cursor : $this->cursor);
	}

	/**
	 * Method to fetch a row from the result set cursor as an associative array.
	 *
	 * @param   mixed  $cursor  The optional result set cursor from which to fetch the row.
	 *
	 * @return  mixed  Either the next row from the result set or false if there are no more rows.
	 *
	 * @since   12.1
	 */
	protected function fetchAssoc($cursor = null)
	{
		return mysql_fetch_assoc($cursor ? $cursor : $this->cursor);
	}

	/**
	 * Method to fetch a row from the result set cursor as an object.
	 *
	 * @param   mixed   $cursor  The optional result set cursor from which to fetch the row.
	 * @param   string  $class   The class name to use for the returned row object.
	 *
	 * @return  mixed   Either the next row from the result set or false if there are no more rows.
	 *
	 * @since   12.1
	 */
	protected function fetchObject($cursor = null, $class = 'stdClass')
	{
		return mysql_fetch_object($cursor ? $cursor : $this->cursor, $class);
	}

	/**
	 * Method to free up the memory used for the result set.
	 *
	 * @param   mixed  $cursor  The optional result set cursor from which to fetch the row.
	 *
	 * @return  void
	 *
	 * @since   12.1
	 */
	protected function freeResult($cursor = null)
	{
		mysql_free_result($cursor ? $cursor : $this->cursor);
	}

	/**
	 * Internal function to check if profiling is available
	 *
	 * @return  boolean
	 *
	 * @since   3.1.3
	 */
	private function hasProfiling()
	{
		try
		{
			$res = mysql_query("SHOW VARIABLES LIKE 'have_profiling'", $this->connection);
			$row = mysql_fetch_assoc($res);

			return isset($row);
		}
		catch (Exception $e)
		{
			return false;
		}
	}

	/**
	 * Does the database server claim to have support for UTF-8 Multibyte (utf8mb4) collation?
	 *
	 * libmysql supports utf8mb4 since 5.5.3 (same version as the MySQL server). mysqlnd supports utf8mb4 since 5.0.9.
	 *
	 * @return  boolean
	 *
	 * @since   CMS 3.5.0
	 */
	private function serverClaimsUtf8mb4Support()
	{
		$client_version = mysql_get_client_info();

		if (strpos($client_version, 'mysqlnd') !== false)
		{
			$client_version = preg_replace('/^\D+([\d.]+).*/', '$1', $client_version);

			return version_compare($client_version, '5.0.9', '>=');
		}
		else
		{
			return version_compare($client_version, '5.5.3', '>=');
		}
	}

	/**
	 * Return the actual SQL Error number
	 *
	 * @return  integer  The SQL Error number
	 *
	 * @since   3.4.6
	 */
	protected function getErrorNumber()
	{
		return (int) mysql_errno($this->connection);
	}

	/**
	 * Return the actual SQL Error message
	 *
	 * @param   string  $query  The SQL Query that fails
	 *
	 * @return  string  The SQL Error message
	 *
	 * @since   3.4.6
	 */
	protected function getErrorMessage($query)
	{
		$errorMessage = (string) mysql_error($this->connection);

		// Replace the Databaseprefix with `#__` if we are not in Debug
		if (!$this->debug)
		{
			$errorMessage = str_replace($this->tablePrefix, '#__', $errorMessage);
			$query        = str_replace($this->tablePrefix, '#__', $query);
		}

		return $errorMessage . ' SQL=' . $query;
	}
}
mysqli.php000064400000060504152346317060006607 0ustar00<?php
/**
 * @package     FrameworkOnFramework
 * @subpackage  database
 * @copyright   Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 *
 * This file is adapted from the Joomla! Platform. It is used to iterate a database cursor returning FOFTable objects
 * instead of plain stdClass objects
 */

// Protect from unauthorized access
defined('FOF_INCLUDED') or die;

/**
 * MySQLi database driver
 *
 * @see    http://php.net/manual/en/book.mysqli.php
 * @since  12.1
 */
class FOFDatabaseDriverMysqli extends FOFDatabaseDriver
{
	/**
	 * The name of the database driver.
	 *
	 * @var    string
	 * @since  12.1
	 */
	public $name = 'mysqli';

	/**
	 * The type of the database server family supported by this driver.
	 *
	 * @var    string
	 * @since  CMS 3.5.0
	 */
	public $serverType = 'mysql';

	/**
	 * @var    mysqli  The database connection resource.
	 * @since  11.1
	 */
	protected $connection;

	/**
	 * The character(s) used to quote SQL statement names such as table names or field names,
	 * etc. The child classes should define this as necessary.  If a single character string the
	 * same character is used for both sides of the quoted name, else the first character will be
	 * used for the opening quote and the second for the closing quote.
	 *
	 * @var    string
	 * @since  12.2
	 */
	protected $nameQuote = '`';

	/**
	 * The null or zero representation of a timestamp for the database driver.  This should be
	 * defined in child classes to hold the appropriate value for the engine.
	 *
	 * @var    string
	 * @since  12.2
	 */
	protected $nullDate = '0000-00-00 00:00:00';

	/**
	 * @var    string  The minimum supported database version.
	 * @since  12.2
	 */
	protected static $dbMinimum = '5.0.4';

	/**
	 * Constructor.
	 *
	 * @param   array  $options  List of options used to configure the connection
	 *
	 * @since   12.1
	 */
	public function __construct($options)
	{
		// Get some basic values from the options.
		$options['host']     = (isset($options['host'])) ? $options['host'] : 'localhost';
		$options['user']     = (isset($options['user'])) ? $options['user'] : 'root';
		$options['password'] = (isset($options['password'])) ? $options['password'] : '';
		$options['database'] = (isset($options['database'])) ? $options['database'] : '';
		$options['select']   = (isset($options['select'])) ? (bool) $options['select'] : true;
		$options['port']     = null;
		$options['socket']   = null;

		// Finalize initialisation.
		parent::__construct($options);
	}

	/**
	 * Destructor.
	 *
	 * @since   12.1
	 */
	public function __destruct()
	{
		$this->disconnect();
	}

	/**
	 * Connects to the database if needed.
	 *
	 * @return  void  Returns void if the database connected successfully.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function connect()
	{
		if ($this->connection)
		{
			return;
		}

		/*
		 * Unlike mysql_connect(), mysqli_connect() takes the port and socket as separate arguments. Therefore, we
		 * have to extract them from the host string.
		 */
		$port = isset($this->options['port']) ? $this->options['port'] : 3306;
		$regex = '/^(?P<host>((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))(:(?P<port>.+))?$/';

		if (preg_match($regex, $this->options['host'], $matches))
		{
			// It's an IPv4 address with ot without port
			$this->options['host'] = $matches['host'];

			if (!empty($matches['port']))
			{
				$port = $matches['port'];
			}
		}
		elseif (preg_match('/^(?P<host>\[.*\])(:(?P<port>.+))?$/', $this->options['host'], $matches))
		{
			// We assume square-bracketed IPv6 address with or without port, e.g. [fe80:102::2%eth1]:3306
			$this->options['host'] = $matches['host'];

			if (!empty($matches['port']))
			{
				$port = $matches['port'];
			}
		}
		elseif (preg_match('/^(?P<host>(\w+:\/{2,3})?[a-z0-9\.\-]+)(:(?P<port>[^:]+))?$/i', $this->options['host'], $matches))
		{
			// Named host (e.g domain.com or localhost) with ot without port
			$this->options['host'] = $matches['host'];

			if (!empty($matches['port']))
			{
				$port = $matches['port'];
			}
		}
		elseif (preg_match('/^:(?P<port>[^:]+)$/', $this->options['host'], $matches))
		{
			// Empty host, just port, e.g. ':3306'
			$this->options['host'] = 'localhost';
			$port = $matches['port'];
		}
		// ... else we assume normal (naked) IPv6 address, so host and port stay as they are or default

		// Get the port number or socket name
		if (is_numeric($port))
		{
			$this->options['port'] = (int) $port;
		}
		else
		{
			$this->options['socket'] = $port;
		}

		// Make sure the MySQLi extension for PHP is installed and enabled.
		if (!function_exists('mysqli_connect'))
		{
			throw new RuntimeException('The MySQL adapter mysqli is not available');
		}

		$this->connection = @mysqli_connect(
			$this->options['host'], $this->options['user'], $this->options['password'], null, $this->options['port'], $this->options['socket']
		);

		// Attempt to connect to the server.
		if (!$this->connection)
		{
			throw new RuntimeException('Could not connect to MySQL.');
		}

		// Set sql_mode to non_strict mode
		mysqli_query($this->connection, "SET @@SESSION.sql_mode = '';");

		// If auto-select is enabled select the given database.
		if ($this->options['select'] && !empty($this->options['database']))
		{
			$this->select($this->options['database']);
		}

		// Pre-populate the UTF-8 Multibyte compatibility flag based on server version
		$this->utf8mb4 = $this->serverClaimsUtf8mb4Support();

		// Set the character set (needed for MySQL 4.1.2+).
		$this->utf = $this->setUtf();

		// Turn MySQL profiling ON in debug mode:
		if ($this->debug && $this->hasProfiling())
		{
			mysqli_query($this->connection, "SET profiling_history_size = 100;");
			mysqli_query($this->connection, "SET profiling = 1;");
		}
	}

	/**
	 * Disconnects the database.
	 *
	 * @return  void
	 *
	 * @since   12.1
	 */
	public function disconnect()
	{
		// Close the connection.
		if ($this->connection)
		{
			foreach ($this->disconnectHandlers as $h)
			{
				call_user_func_array($h, array( &$this));
			}

			mysqli_close($this->connection);
		}

		$this->connection = null;
	}

	/**
	 * Method to escape a string for usage in an SQL statement.
	 *
	 * @param   string   $text   The string to be escaped.
	 * @param   boolean  $extra  Optional parameter to provide extra escaping.
	 *
	 * @return  string  The escaped string.
	 *
	 * @since   12.1
	 */
	public function escape($text, $extra = false)
	{
		$this->connect();

		$result = mysqli_real_escape_string($this->getConnection(), $text);

		if ($extra)
		{
			$result = addcslashes($result, '%_');
		}

		return $result;
	}

	/**
	 * Test to see if the MySQL connector is available.
	 *
	 * @return  boolean  True on success, false otherwise.
	 *
	 * @since   12.1
	 */
	public static function isSupported()
	{
		return (function_exists('mysqli_connect'));
	}

	/**
	 * Determines if the connection to the server is active.
	 *
	 * @return  boolean  True if connected to the database engine.
	 *
	 * @since   12.1
	 */
	public function connected()
	{
		if (is_object($this->connection))
		{
			return mysqli_ping($this->connection);
		}

		return false;
	}

	/**
	 * Drops a table from the database.
	 *
	 * @param   string   $tableName  The name of the database table to drop.
	 * @param   boolean  $ifExists   Optionally specify that the table must exist before it is dropped.
	 *
	 * @return  FOFDatabaseDriverMysqli  Returns this object to support chaining.
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function dropTable($tableName, $ifExists = true)
	{
		$this->connect();

		$query = $this->getQuery(true);

		$this->setQuery('DROP TABLE ' . ($ifExists ? 'IF EXISTS ' : '') . $query->quoteName($tableName));

		$this->execute();

		return $this;
	}

	/**
	 * Get the number of affected rows by the last INSERT, UPDATE, REPLACE or DELETE for the previous executed SQL statement.
	 *
	 * @return  integer  The number of affected rows.
	 *
	 * @since   12.1
	 */
	public function getAffectedRows()
	{
		$this->connect();

		return mysqli_affected_rows($this->connection);
	}

	/**
	 * Method to get the database collation.
	 *
	 * @return  mixed  The collation in use by the database (string) or boolean false if not supported.
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function getCollation()
	{
		$this->connect();

		// Attempt to get the database collation by accessing the server system variable.
		$this->setQuery('SHOW VARIABLES LIKE "collation_database"');
		$result = $this->loadObject();

		if (property_exists($result, 'Value'))
		{
			return $result->Value;
		}
		else
		{
			return false;
		}
	}

	/**
	 * Method to get the database connection collation, as reported by the driver. If the connector doesn't support
	 * reporting this value please return an empty string.
	 *
	 * @return  string
	 */
	public function getConnectionCollation()
	{
		$this->connect();

		// Attempt to get the database collation by accessing the server system variable.
		$this->setQuery('SHOW VARIABLES LIKE "collation_connection"');
		$result = $this->loadObject();

		if (property_exists($result, 'Value'))
		{
			return $result->Value;
		}
		else
		{
			return false;
		}
	}

	/**
	 * Get the number of returned rows for the previous executed SQL statement.
	 * This command is only valid for statements like SELECT or SHOW that return an actual result set.
	 * To retrieve the number of rows affected by a INSERT, UPDATE, REPLACE or DELETE query, use getAffectedRows().
	 *
	 * @param   resource  $cursor  An optional database cursor resource to extract the row count from.
	 *
	 * @return  integer   The number of returned rows.
	 *
	 * @since   12.1
	 */
	public function getNumRows($cursor = null)
	{
		return mysqli_num_rows($cursor ? $cursor : $this->cursor);
	}

	/**
	 * Shows the table CREATE statement that creates the given tables.
	 *
	 * @param   mixed  $tables  A table name or a list of table names.
	 *
	 * @return  array  A list of the create SQL for the tables.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function getTableCreate($tables)
	{
		$this->connect();

		$result = array();

		// Sanitize input to an array and iterate over the list.
		settype($tables, 'array');

		foreach ($tables as $table)
		{
			// Set the query to get the table CREATE statement.
			$this->setQuery('SHOW CREATE table ' . $this->quoteName($this->escape($table)));
			$row = $this->loadRow();

			// Populate the result array based on the create statements.
			$result[$table] = $row[1];
		}

		return $result;
	}

	/**
	 * Retrieves field information about a given table.
	 *
	 * @param   string   $table     The name of the database table.
	 * @param   boolean  $typeOnly  True to only return field types.
	 *
	 * @return  array  An array of fields for the database table.
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function getTableColumns($table, $typeOnly = true)
	{
		$this->connect();

		$result = array();

		// Set the query to get the table fields statement.
		$this->setQuery('SHOW FULL COLUMNS FROM ' . $this->quoteName($this->escape($table)));
		$fields = $this->loadObjectList();

		// If we only want the type as the value add just that to the list.
		if ($typeOnly)
		{
			foreach ($fields as $field)
			{
				$result[$field->Field] = preg_replace("/[(0-9)]/", '', $field->Type);
			}
		}
		// If we want the whole field data object add that to the list.
		else
		{
			foreach ($fields as $field)
			{
				$result[$field->Field] = $field;
			}
		}

		return $result;
	}

	/**
	 * Get the details list of keys for a table.
	 *
	 * @param   string  $table  The name of the table.
	 *
	 * @return  array  An array of the column specification for the table.
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function getTableKeys($table)
	{
		$this->connect();

		// Get the details columns information.
		$this->setQuery('SHOW KEYS FROM ' . $this->quoteName($table));
		$keys = $this->loadObjectList();

		return $keys;
	}

	/**
	 * Method to get an array of all tables in the database.
	 *
	 * @return  array  An array of all the tables in the database.
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function getTableList()
	{
		$this->connect();

		// Set the query to get the tables statement.
		$this->setQuery('SHOW TABLES');
		$tables = $this->loadColumn();

		return $tables;
	}

	/**
	 * Get the version of the database connector.
	 *
	 * @return  string  The database connector version.
	 *
	 * @since   12.1
	 */
	public function getVersion()
	{
		$this->connect();

		return mysqli_get_server_info($this->connection);
	}

	/**
	 * Method to get the auto-incremented value from the last INSERT statement.
	 *
	 * @return  mixed  The value of the auto-increment field from the last inserted row.
	 *                 If the value is greater than maximal int value, it will return a string.
	 *
	 * @since   12.1
	 */
	public function insertid()
	{
		$this->connect();

		return mysqli_insert_id($this->connection);
	}

	/**
	 * Locks a table in the database.
	 *
	 * @param   string  $table  The name of the table to unlock.
	 *
	 * @return  FOFDatabaseDriverMysqli  Returns this object to support chaining.
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function lockTable($table)
	{
		$this->setQuery('LOCK TABLES ' . $this->quoteName($table) . ' WRITE')->execute();

		return $this;
	}

	/**
	 * Execute the SQL statement.
	 *
	 * @return  mixed  A database cursor resource on success, boolean false on failure.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function execute()
	{
		$this->connect();

		if (!is_object($this->connection))
		{
			if (class_exists('JLog'))
			{
				JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database');
			}
			throw new RuntimeException($this->errorMsg, $this->errorNum);
		}

		// Take a local copy so that we don't modify the original query and cause issues later
		$query = $this->replacePrefix((string) $this->sql);

		if (!($this->sql instanceof FOFDatabaseQuery) && ($this->limit > 0 || $this->offset > 0))
		{
			$query .= ' LIMIT ' . $this->offset . ', ' . $this->limit;
		}

		// Increment the query counter.
		$this->count++;

		// Reset the error values.
		$this->errorNum = 0;
		$this->errorMsg = '';
		$memoryBefore   = null;

		// If debugging is enabled then let's log the query.
		if ($this->debug)
		{
			// Add the query to the object queue.
			$this->log[] = $query;

			if (class_exists('JLog'))
			{
				JLog::add($query, JLog::DEBUG, 'databasequery');
			}

			$this->timings[] = microtime(true);

			if (is_object($this->cursor))
			{
				// Avoid warning if result already freed by third-party library
				@$this->freeResult();
			}

			$memoryBefore = memory_get_usage();
		}

		// Execute the query. Error suppression is used here to prevent warnings/notices that the connection has been lost.
		$this->cursor = @mysqli_query($this->connection, $query);

		if ($this->debug)
		{
			$this->timings[] = microtime(true);

			if (defined('DEBUG_BACKTRACE_IGNORE_ARGS'))
			{
				$this->callStacks[] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
			}
			else
			{
				$this->callStacks[] = debug_backtrace();
			}

			$this->callStacks[count($this->callStacks) - 1][0]['memory'] = array(
				$memoryBefore,
				memory_get_usage(),
				is_object($this->cursor) ? $this->getNumRows() : null
			);
		}

		// If an error occurred handle it.
		if (!$this->cursor)
		{
			// Get the error number and message before we execute any more queries.
			$this->errorNum = $this->getErrorNumber();
			$this->errorMsg = $this->getErrorMessage($query);

			// Check if the server was disconnected.
			if (!$this->connected())
			{
				try
				{
					// Attempt to reconnect.
					$this->connection = null;
					$this->connect();
				}
				// If connect fails, ignore that exception and throw the normal exception.
				catch (RuntimeException $e)
				{
					// Get the error number and message.
					$this->errorNum = $this->getErrorNumber();
					$this->errorMsg = $this->getErrorMessage($query);

					if (class_exists('JLog'))
					{
						JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
					}

					throw new RuntimeException($this->errorMsg, $this->errorNum, $e);
				}

				// Since we were able to reconnect, run the query again.
				return $this->execute();
			}
			// The server was not disconnected.
			else
			{
				if (class_exists('JLog'))
				{
					JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
				}

				throw new RuntimeException($this->errorMsg, $this->errorNum);
			}
		}

		return $this->cursor;
	}

	/**
	 * Renames a table in the database.
	 *
	 * @param   string  $oldTable  The name of the table to be renamed
	 * @param   string  $newTable  The new name for the table.
	 * @param   string  $backup    Not used by MySQL.
	 * @param   string  $prefix    Not used by MySQL.
	 *
	 * @return  FOFDatabaseDriverMysqli  Returns this object to support chaining.
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function renameTable($oldTable, $newTable, $backup = null, $prefix = null)
	{
		$this->setQuery('RENAME TABLE ' . $oldTable . ' TO ' . $newTable)->execute();

		return $this;
	}

	/**
	 * Select a database for use.
	 *
	 * @param   string  $database  The name of the database to select for use.
	 *
	 * @return  boolean  True if the database was successfully selected.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function select($database)
	{
		$this->connect();

		if (!$database)
		{
			return false;
		}

		if (!mysqli_select_db($this->connection, $database))
		{
			throw new RuntimeException('Could not connect to database.');
		}

		return true;
	}

	/**
	 * Set the connection to use UTF-8 character encoding.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   12.1
	 */
	public function setUtf()
	{
		// If UTF is not supported return false immediately
		if (!$this->utf)
		{
			return false;
		}

		// Make sure we're connected to the server
		$this->connect();

		// Which charset should I use, plain utf8 or multibyte utf8mb4?
		$charset = $this->utf8mb4 ? 'utf8mb4' : 'utf8';

		$result = @$this->connection->set_charset($charset);

		/**
		 * If I could not set the utf8mb4 charset then the server doesn't support utf8mb4 despite claiming otherwise.
		 * This happens on old MySQL server versions (less than 5.5.3) using the mysqlnd PHP driver. Since mysqlnd
		 * masks the server version and reports only its own we can not be sure if the server actually does support
		 * UTF-8 Multibyte (i.e. it's MySQL 5.5.3 or later). Since the utf8mb4 charset is undefined in this case we
		 * catch the error and determine that utf8mb4 is not supported!
		 */
		if (!$result && $this->utf8mb4)
		{
			$this->utf8mb4 = false;
			$result = @$this->connection->set_charset('utf8');
		}

		return $result;
	}

	/**
	 * Method to commit a transaction.
	 *
	 * @param   boolean  $toSavepoint  If true, commit to the last savepoint.
	 *
	 * @return  void
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function transactionCommit($toSavepoint = false)
	{
		$this->connect();

		if (!$toSavepoint || $this->transactionDepth <= 1)
		{
			if ($this->setQuery('COMMIT')->execute())
			{
				$this->transactionDepth = 0;
			}

			return;
		}

		$this->transactionDepth--;
	}

	/**
	 * Method to roll back a transaction.
	 *
	 * @param   boolean  $toSavepoint  If true, rollback to the last savepoint.
	 *
	 * @return  void
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function transactionRollback($toSavepoint = false)
	{
		$this->connect();

		if (!$toSavepoint || $this->transactionDepth <= 1)
		{
			if ($this->setQuery('ROLLBACK')->execute())
			{
				$this->transactionDepth = 0;
			}

			return;
		}

		$savepoint = 'SP_' . ($this->transactionDepth - 1);
		$this->setQuery('ROLLBACK TO SAVEPOINT ' . $this->quoteName($savepoint));

		if ($this->execute())
		{
			$this->transactionDepth--;
		}
	}

	/**
	 * Method to initialize a transaction.
	 *
	 * @param   boolean  $asSavepoint  If true and a transaction is already active, a savepoint will be created.
	 *
	 * @return  void
	 *
	 * @since   12.2
	 * @throws  RuntimeException
	 */
	public function transactionStart($asSavepoint = false)
	{
		$this->connect();

		if (!$asSavepoint || !$this->transactionDepth)
		{
			if ($this->setQuery('START TRANSACTION')->execute())
			{
				$this->transactionDepth = 1;
			}

			return;
		}

		$savepoint = 'SP_' . $this->transactionDepth;
		$this->setQuery('SAVEPOINT ' . $this->quoteName($savepoint));

		if ($this->execute())
		{
			$this->transactionDepth++;
		}
	}

	/**
	 * Method to fetch a row from the result set cursor as an array.
	 *
	 * @param   mixed  $cursor  The optional result set cursor from which to fetch the row.
	 *
	 * @return  mixed  Either the next row from the result set or false if there are no more rows.
	 *
	 * @since   12.1
	 */
	protected function fetchArray($cursor = null)
	{
		return mysqli_fetch_row($cursor ? $cursor : $this->cursor);
	}

	/**
	 * Method to fetch a row from the result set cursor as an associative array.
	 *
	 * @param   mixed  $cursor  The optional result set cursor from which to fetch the row.
	 *
	 * @return  mixed  Either the next row from the result set or false if there are no more rows.
	 *
	 * @since   12.1
	 */
	protected function fetchAssoc($cursor = null)
	{
		return mysqli_fetch_assoc($cursor ? $cursor : $this->cursor);
	}

	/**
	 * Method to fetch a row from the result set cursor as an object.
	 *
	 * @param   mixed   $cursor  The optional result set cursor from which to fetch the row.
	 * @param   string  $class   The class name to use for the returned row object.
	 *
	 * @return  mixed   Either the next row from the result set or false if there are no more rows.
	 *
	 * @since   12.1
	 */
	protected function fetchObject($cursor = null, $class = 'stdClass')
	{
		return mysqli_fetch_object($cursor ? $cursor : $this->cursor, $class);
	}

	/**
	 * Method to free up the memory used for the result set.
	 *
	 * @param   mixed  $cursor  The optional result set cursor from which to fetch the row.
	 *
	 * @return  void
	 *
	 * @since   12.1
	 */
	protected function freeResult($cursor = null)
	{
		mysqli_free_result($cursor ? $cursor : $this->cursor);

		if ((! $cursor) || ($cursor === $this->cursor))
		{
			$this->cursor = null;
		}
	}

	/**
	 * Unlocks tables in the database.
	 *
	 * @return  FOFDatabaseDriverMysqli  Returns this object to support chaining.
	 *
	 * @since   12.1
	 * @throws  RuntimeException
	 */
	public function unlockTables()
	{
		$this->setQuery('UNLOCK TABLES')->execute();

		return $this;
	}

	/**
	 * Internal function to check if profiling is available
	 *
	 * @return  boolean
	 *
	 * @since   3.1.3
	 */
	private function hasProfiling()
	{
		try
		{
			$res = mysqli_query($this->connection, "SHOW VARIABLES LIKE 'have_profiling'");
			$row = mysqli_fetch_assoc($res);

			return isset($row);
		}
		catch (Exception $e)
		{
			return false;
		}
	}

	/**
	 * Does the database server claim to have support for UTF-8 Multibyte (utf8mb4) collation?
	 *
	 * libmysql supports utf8mb4 since 5.5.3 (same version as the MySQL server). mysqlnd supports utf8mb4 since 5.0.9.
	 *
	 * @return  boolean
	 *
	 * @since   CMS 3.5.0
	 */
	private function serverClaimsUtf8mb4Support()
	{
		$client_version = mysqli_get_client_info();

		if (strpos($client_version, 'mysqlnd') !== false)
		{
			$client_version = preg_replace('/^\D+([\d.]+).*/', '$1', $client_version);

			return version_compare($client_version, '5.0.9', '>=');
		}
		else
		{
			return version_compare($client_version, '5.5.3', '>=');
		}
	}

	/**
	 * Return the actual SQL Error number
	 *
	 * @return  integer  The SQL Error number
	 *
	 * @since   3.4.6
	 */
	protected function getErrorNumber()
	{
		return (int) mysqli_errno($this->connection);
	}

	/**
	 * Return the actual SQL Error message
	 *
	 * @param   string  $query  The SQL Query that fails
	 *
	 * @return  string  The SQL Error message
	 *
	 * @since   3.4.6
	 */
	protected function getErrorMessage($query)
	{
		$errorMessage = (string) mysqli_error($this->connection);

		// Replace the Databaseprefix with `#__` if we are not in Debug
		if (!$this->debug)
		{
			$errorMessage = str_replace($this->tablePrefix, '#__', $errorMessage);
			$query        = str_replace($this->tablePrefix, '#__', $query);
		}

		return $errorMessage . ' SQL=' . $query;
	}
}
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