1 files changed, 463 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/driver/mysqli.php b/phpBB/phpbb/db/driver/mysqli.php
new file mode 100644
index 0000000000..0f7a73ee6e
--- /dev/null
+++ b/phpBB/phpbb/db/driver/mysqli.php
@@ -0,0 +1,463 @@
+<?php
+/**
+*
+* @package dbal
+* @copyright (c) 2005 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* MySQLi Database Abstraction Layer
+* mysqli-extension has to be compiled with:
+* MySQL 4.1+ or MySQL 5.0+
+* @package dbal
+*/
+class phpbb_db_driver_mysqli extends phpbb_db_driver_mysql_base
+{
+	var $multi_insert = true;
+	var $connect_error = '';
+
+	/**
+	* Connect to server
+	*/
+	function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false , $new_link = false)
+	{
+		if (!function_exists('mysqli_connect'))
+		{
+			$this->connect_error = 'mysqli_connect function does not exist, is mysqli extension installed?';
+			return $this->sql_error('');
+		}
+
+		// Mysqli extension supports persistent connection since PHP 5.3.0
+		$this->persistency = (version_compare(PHP_VERSION, '5.3.0', '>=')) ? $persistency : false;
+		$this->user = $sqluser;
+
+		// If persistent connection, set dbhost to localhost when empty and prepend it with 'p:' prefix
+		$this->server = ($this->persistency) ? 'p:' . (($sqlserver) ? $sqlserver : 'localhost') : $sqlserver;
+
+		$this->dbname = $database;
+		$port = (!$port) ? NULL : $port;
+
+		// If port is set and it is not numeric, most likely mysqli socket is set.
+		// Try to map it to the $socket parameter.
+		$socket = NULL;
+		if ($port)
+		{
+			if (is_numeric($port))
+			{
+				$port = (int) $port;
+			}
+			else
+			{
+				$socket = $port;
+				$port = NULL;
+			}
+		}
+
+		$this->db_connect_id = @mysqli_connect($this->server, $this->user, $sqlpassword, $this->dbname, $port, $socket);
+
+		if ($this->db_connect_id && $this->dbname != '')
+		{
+			@mysqli_query($this->db_connect_id, "SET NAMES 'utf8'");
+
+			// enforce strict mode on databases that support it
+			if (version_compare($this->sql_server_info(true), '5.0.2', '>='))
+			{
+				$result = @mysqli_query($this->db_connect_id, 'SELECT @@session.sql_mode AS sql_mode');
+				$row = @mysqli_fetch_assoc($result);
+				@mysqli_free_result($result);
+
+				$modes = array_map('trim', explode(',', $row['sql_mode']));
+
+				// TRADITIONAL includes STRICT_ALL_TABLES and STRICT_TRANS_TABLES
+				if (!in_array('TRADITIONAL', $modes))
+				{
+					if (!in_array('STRICT_ALL_TABLES', $modes))
+					{
+						$modes[] = 'STRICT_ALL_TABLES';
+					}
+
+					if (!in_array('STRICT_TRANS_TABLES', $modes))
+					{
+						$modes[] = 'STRICT_TRANS_TABLES';
+					}
+				}
+
+				$mode = implode(',', $modes);
+				@mysqli_query($this->db_connect_id, "SET SESSION sql_mode='{$mode}'");
+			}
+			return $this->db_connect_id;
+		}
+
+		return $this->sql_error('');
+	}
+
+	/**
+	* Version information about used database
+	* @param bool $raw if true, only return the fetched sql_server_version
+	* @param bool $use_cache If true, it is safe to retrieve the value from the cache
+	* @return string sql server version
+	*/
+	function sql_server_info($raw = false, $use_cache = true)
+	{
+		global $cache;
+
+		if (!$use_cache || empty($cache) || ($this->sql_server_version = $cache->get('mysqli_version')) === false)
+		{
+			$result = @mysqli_query($this->db_connect_id, 'SELECT VERSION() AS version');
+			$row = @mysqli_fetch_assoc($result);
+			@mysqli_free_result($result);
+
+			$this->sql_server_version = $row['version'];
+
+			if (!empty($cache) && $use_cache)
+			{
+				$cache->put('mysqli_version', $this->sql_server_version);
+			}
+		}
+
+		return ($raw) ? $this->sql_server_version : 'MySQL(i) ' . $this->sql_server_version;
+	}
+
+	/**
+	* SQL Transaction
+	* @access private
+	*/
+	function _sql_transaction($status = 'begin')
+	{
+		switch ($status)
+		{
+			case 'begin':
+				return @mysqli_autocommit($this->db_connect_id, false);
+			break;
+
+			case 'commit':
+				$result = @mysqli_commit($this->db_connect_id);
+				@mysqli_autocommit($this->db_connect_id, true);
+				return $result;
+			break;
+
+			case 'rollback':
+				$result = @mysqli_rollback($this->db_connect_id);
+				@mysqli_autocommit($this->db_connect_id, true);
+				return $result;
+			break;
+		}
+
+		return true;
+	}
+
+	/**
+	* Base query method
+	*
+	* @param	string	$query		Contains the SQL query which shall be executed
+	* @param	int		$cache_ttl	Either 0 to avoid caching or the time in seconds which the result shall be kept in cache
+	* @return	mixed				When casted to bool the returned value returns true on success and false on failure
+	*
+	* @access	public
+	*/
+	function sql_query($query = '', $cache_ttl = 0)
+	{
+		if ($query != '')
+		{
+			global $cache;
+
+			// EXPLAIN only in extra debug mode
+			if (defined('DEBUG'))
+			{
+				$this->sql_report('start', $query);
+			}
+
+			$this->query_result = ($cache && $cache_ttl) ? $cache->sql_load($query) : false;
+			$this->sql_add_num_queries($this->query_result);
+
+			if ($this->query_result === false)
+			{
+				if (($this->query_result = @mysqli_query($this->db_connect_id, $query)) === false)
+				{
+					$this->sql_error($query);
+				}
+
+				if (defined('DEBUG'))
+				{
+					$this->sql_report('stop', $query);
+				}
+
+				if ($cache && $cache_ttl)
+				{
+					$this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl);
+				}
+			}
+			else if (defined('DEBUG'))
+			{
+				$this->sql_report('fromcache', $query);
+			}
+		}
+		else
+		{
+			return false;
+		}
+
+		return $this->query_result;
+	}
+
+	/**
+	* Return number of affected rows
+	*/
+	function sql_affectedrows()
+	{
+		return ($this->db_connect_id) ? @mysqli_affected_rows($this->db_connect_id) : false;
+	}
+
+	/**
+	* Fetch current row
+	*/
+	function sql_fetchrow($query_id = false)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && !is_object($query_id) && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_fetchrow($query_id);
+		}
+
+		if ($query_id !== false)
+		{
+			$result = @mysqli_fetch_assoc($query_id);
+			return $result !== null ? $result : false;
+		}
+
+		return false;
+	}
+
+	/**
+	* Seek to given row number
+	* rownum is zero-based
+	*/
+	function sql_rowseek($rownum, &$query_id)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && !is_object($query_id) && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_rowseek($rownum, $query_id);
+		}
+
+		return ($query_id !== false) ? @mysqli_data_seek($query_id, $rownum) : false;
+	}
+
+	/**
+	* Get last inserted id after insert statement
+	*/
+	function sql_nextid()
+	{
+		return ($this->db_connect_id) ? @mysqli_insert_id($this->db_connect_id) : false;
+	}
+
+	/**
+	* Free sql result
+	*/
+	function sql_freeresult($query_id = false)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && !is_object($query_id) && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_freeresult($query_id);
+		}
+
+		return @mysqli_free_result($query_id);
+	}
+
+	/**
+	* Escape string used in sql query
+	*/
+	function sql_escape($msg)
+	{
+		return @mysqli_real_escape_string($this->db_connect_id, $msg);
+	}
+
+	/**
+	* return sql error array
+	* @access private
+	*/
+	function _sql_error()
+	{
+		if ($this->db_connect_id)
+		{
+			$error = array(
+				'message'	=> @mysqli_error($this->db_connect_id),
+				'code'		=> @mysqli_errno($this->db_connect_id)
+			);
+		}
+		else if (function_exists('mysqli_connect_error'))
+		{
+			$error = array(
+				'message'	=> @mysqli_connect_error(),
+				'code'		=> @mysqli_connect_errno(),
+			);
+		}
+		else
+		{
+			$error = array(
+				'message'	=> $this->connect_error,
+				'code'		=> '',
+			);
+		}
+
+		return $error;
+	}
+
+	/**
+	* Close sql connection
+	* @access private
+	*/
+	function _sql_close()
+	{
+		return @mysqli_close($this->db_connect_id);
+	}
+
+	/**
+	* Build db-specific report
+	* @access private
+	*/
+	function _sql_report($mode, $query = '')
+	{
+		static $test_prof;
+
+		// current detection method, might just switch to see the existance of INFORMATION_SCHEMA.PROFILING
+		if ($test_prof === null)
+		{
+			$test_prof = false;
+			if (strpos(mysqli_get_server_info($this->db_connect_id), 'community') !== false)
+			{
+				$ver = mysqli_get_server_version($this->db_connect_id);
+				if ($ver >= 50037 && $ver < 50100)
+				{
+					$test_prof = true;
+				}
+			}
+		}
+
+		switch ($mode)
+		{
+			case 'start':
+
+				$explain_query = $query;
+				if (preg_match('/UPDATE ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))
+				{
+					$explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];
+				}
+				else if (preg_match('/DELETE FROM ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))
+				{
+					$explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];
+				}
+
+				if (preg_match('/^SELECT/', $explain_query))
+				{
+					$html_table = false;
+
+					// begin profiling
+					if ($test_prof)
+					{
+						@mysqli_query($this->db_connect_id, 'SET profiling = 1;');
+					}
+
+					if ($result = @mysqli_query($this->db_connect_id, "EXPLAIN $explain_query"))
+					{
+						while ($row = @mysqli_fetch_assoc($result))
+						{
+							$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
+						}
+					}
+					@mysqli_free_result($result);
+
+					if ($html_table)
+					{
+						$this->html_hold .= '</table>';
+					}
+
+					if ($test_prof)
+					{
+						$html_table = false;
+
+						// get the last profile
+						if ($result = @mysqli_query($this->db_connect_id, 'SHOW PROFILE ALL;'))
+						{
+							$this->html_hold .= '<br />';
+							while ($row = @mysqli_fetch_assoc($result))
+							{
+								// make <unknown> HTML safe
+								if (!empty($row['Source_function']))
+								{
+									$row['Source_function'] = str_replace(array('<', '>'), array('&lt;', '&gt;'), $row['Source_function']);
+								}
+
+								// remove unsupported features
+								foreach ($row as $key => $val)
+								{
+									if ($val === null)
+									{
+										unset($row[$key]);
+									}
+								}
+								$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
+							}
+						}
+						@mysqli_free_result($result);
+
+						if ($html_table)
+						{
+							$this->html_hold .= '</table>';
+						}
+
+						@mysqli_query($this->db_connect_id, 'SET profiling = 0;');
+					}
+				}
+
+			break;
+
+			case 'fromcache':
+				$endtime = explode(' ', microtime());
+				$endtime = $endtime[0] + $endtime[1];
+
+				$result = @mysqli_query($this->db_connect_id, $query);
+				while ($void = @mysqli_fetch_assoc($result))
+				{
+					// Take the time spent on parsing rows into account
+				}
+				@mysqli_free_result($result);
+
+				$splittime = explode(' ', microtime());
+				$splittime = $splittime[0] + $splittime[1];
+
+				$this->sql_report('record_fromcache', $query, $endtime, $splittime);
+
+			break;
+		}
+	}
+}