1 files changed, 439 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/driver/mssqlnative.php b/phpBB/phpbb/db/driver/mssqlnative.php
new file mode 100644
index 0000000000..125db9c8d4
--- /dev/null
+++ b/phpBB/phpbb/db/driver/mssqlnative.php
@@ -0,0 +1,439 @@
+<?php
+/**
+*
+* @package dbal
+* @copyright (c) 2010 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+* This is the MS SQL Server Native database abstraction layer.
+* PHP mssql native driver required.
+* @author Chris Pucci
+*
+*/
+
+namespace phpbb\db\driver;
+
+/**
+* @package dbal
+*/
+class mssqlnative extends \phpbb\db\driver\mssql_base
+{
+	var $m_insert_id = null;
+	var $last_query_text = '';
+	var $query_options = array();
+	var $connect_error = '';
+
+	/**
+	* Connect to server
+	*/
+	function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
+	{
+		// Test for driver support, to avoid suppressed fatal error
+		if (!function_exists('sqlsrv_connect'))
+		{
+			$this->connect_error = 'Native MS SQL Server driver for PHP is missing or needs to be updated. Version 1.1 or later is required to install phpBB3. You can download the driver from: http://www.microsoft.com/sqlserver/2005/en/us/PHP-Driver.aspx';
+			return $this->sql_error('');
+		}
+
+		//set up connection variables
+		$this->persistency = $persistency;
+		$this->user = $sqluser;
+		$this->dbname = $database;
+		$port_delimiter = (defined('PHP_OS') && substr(PHP_OS, 0, 3) === 'WIN') ? ',' : ':';
+		$this->server = $sqlserver . (($port) ? $port_delimiter . $port : '');
+
+		//connect to database
+		$this->db_connect_id = sqlsrv_connect($this->server, array(
+			'Database' => $this->dbname,
+			'UID' => $this->user,
+			'PWD' => $sqlpassword
+		));
+
+		return ($this->db_connect_id) ? $this->db_connect_id : $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('mssql_version')) === false)
+		{
+			$arr_server_info = sqlsrv_server_info($this->db_connect_id);
+			$this->sql_server_version = $arr_server_info['SQLServerVersion'];
+
+			if (!empty($cache) && $use_cache)
+			{
+				$cache->put('mssql_version', $this->sql_server_version);
+			}
+		}
+
+		if ($raw)
+		{
+			return $this->sql_server_version;
+		}
+
+		return ($this->sql_server_version) ? 'MSSQL<br />' . $this->sql_server_version : 'MSSQL';
+	}
+
+	/**
+	* {@inheritDoc}
+	*/
+	function sql_buffer_nested_transactions()
+	{
+		return true;
+	}
+
+	/**
+	* SQL Transaction
+	* @access private
+	*/
+	function _sql_transaction($status = 'begin')
+	{
+		switch ($status)
+		{
+			case 'begin':
+				return sqlsrv_begin_transaction($this->db_connect_id);
+			break;
+
+			case 'commit':
+				return sqlsrv_commit($this->db_connect_id);
+			break;
+
+			case 'rollback':
+				return sqlsrv_rollback($this->db_connect_id);
+			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->last_query_text = $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 = @sqlsrv_query($this->db_connect_id, $query, array(), $this->query_options)) === false)
+				{
+					$this->sql_error($query);
+				}
+				// reset options for next query
+				$this->query_options = array();
+
+				if (defined('DEBUG'))
+				{
+					$this->sql_report('stop', $query);
+				}
+
+				if ($cache && $cache_ttl)
+				{
+					$this->open_queries[(int) $this->query_result] = $this->query_result;
+					$this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl);
+				}
+				else if (strpos($query, 'SELECT') === 0 && $this->query_result)
+				{
+					$this->open_queries[(int) $this->query_result] = $this->query_result;
+				}
+			}
+			else if (defined('DEBUG'))
+			{
+				$this->sql_report('fromcache', $query);
+			}
+		}
+		else
+		{
+			return false;
+		}
+		return $this->query_result;
+	}
+
+	/**
+	* Build LIMIT query
+	*/
+	function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
+	{
+		$this->query_result = false;
+
+		// total == 0 means all results - not zero results
+		if ($offset == 0 && $total !== 0)
+		{
+			if (strpos($query, "SELECT") === false)
+			{
+				$query = "TOP {$total} " . $query;
+			}
+			else
+			{
+				$query = preg_replace('/SELECT(\s*DISTINCT)?/Dsi', 'SELECT$1 TOP '.$total, $query);
+			}
+		}
+		else if ($offset > 0)
+		{
+			$query = preg_replace('/SELECT(\s*DISTINCT)?/Dsi', 'SELECT$1 TOP(10000000) ', $query);
+			$query = 'SELECT *
+					FROM (SELECT sub2.*, ROW_NUMBER() OVER(ORDER BY sub2.line2) AS line3
+					FROM (SELECT 1 AS line2, sub1.* FROM (' . $query . ') AS sub1) as sub2) AS sub3';
+
+			if ($total > 0)
+			{
+				$query .= ' WHERE line3 BETWEEN ' . ($offset+1) . ' AND ' . ($offset + $total);
+			}
+			else
+			{
+				$query .= ' WHERE line3 > ' . $offset;
+			}
+		}
+
+		$result = $this->sql_query($query, $cache_ttl);
+
+		return $result;
+	}
+
+	/**
+	* Return number of affected rows
+	*/
+	function sql_affectedrows()
+	{
+		return ($this->db_connect_id) ? @sqlsrv_rows_affected($this->query_result) : false;
+	}
+
+	/**
+	* Fetch current row
+	*/
+	function sql_fetchrow($query_id = false)
+	{
+		global $cache;
+
+		if ($query_id === false)
+		{
+			$query_id = $this->query_result;
+		}
+
+		if ($cache && $cache->sql_exists($query_id))
+		{
+			return $cache->sql_fetchrow($query_id);
+		}
+
+		if ($query_id === false)
+		{
+			return false;
+		}
+
+		$row = @sqlsrv_fetch_array($query_id, SQLSRV_FETCH_ASSOC);
+
+		if ($row)
+		{
+			foreach ($row as $key => $value)
+			{
+				$row[$key] = ($value === ' ' || $value === null) ? '' : $value;
+			}
+
+			// remove helper values from LIMIT queries
+			if (isset($row['line2']))
+			{
+				unset($row['line2'], $row['line3']);
+			}
+		}
+		return (sizeof($row)) ? $row : false;
+	}
+
+	/**
+	* Get last inserted id after insert statement
+	*/
+	function sql_nextid()
+	{
+		$result_id = @sqlsrv_query($this->db_connect_id, 'SELECT @@IDENTITY');
+
+		if ($result_id !== false)
+		{
+			$row = @sqlsrv_fetch_array($result_id);
+			$id = $row[0];
+			@sqlsrv_free_stmt($result_id);
+			return $id;
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	/**
+	* Free sql result
+	*/
+	function sql_freeresult($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);
+		}
+
+		if (isset($this->open_queries[(int) $query_id]))
+		{
+			unset($this->open_queries[(int) $query_id]);
+			return @sqlsrv_free_stmt($query_id);
+		}
+
+		return false;
+	}
+
+	/**
+	* return sql error array
+	* @access private
+	*/
+	function _sql_error()
+	{
+		if (function_exists('sqlsrv_errors'))
+		{
+			$errors = @sqlsrv_errors(SQLSRV_ERR_ERRORS);
+			$error_message = '';
+			$code = 0;
+
+			if ($errors != null)
+			{
+				foreach ($errors as $error)
+				{
+					$error_message .= "SQLSTATE: " . $error[ 'SQLSTATE'] . "\n";
+					$error_message .= "code: " . $error[ 'code'] . "\n";
+					$code = $error['code'];
+					$error_message .= "message: " . $error[ 'message'] . "\n";
+				}
+				$this->last_error_result = $error_message;
+				$error = $this->last_error_result;
+			}
+			else
+			{
+				$error = (isset($this->last_error_result) && $this->last_error_result) ? $this->last_error_result : array();
+			}
+
+			$error = array(
+				'message'	=> $error,
+				'code'		=> $code,
+			);
+		}
+		else
+		{
+			$error = array(
+				'message'	=> $this->connect_error,
+				'code'		=> '',
+			);
+		}
+
+		return $error;
+	}
+
+	/**
+	* Close sql connection
+	* @access private
+	*/
+	function _sql_close()
+	{
+		return @sqlsrv_close($this->db_connect_id);
+	}
+
+	/**
+	* Build db-specific report
+	* @access private
+	*/
+	function _sql_report($mode, $query = '')
+	{
+		switch ($mode)
+		{
+			case 'start':
+				$html_table = false;
+				@sqlsrv_query($this->db_connect_id, 'SET SHOWPLAN_TEXT ON;');
+				if ($result = @sqlsrv_query($this->db_connect_id, $query))
+				{
+					@sqlsrv_next_result($result);
+					while ($row = @sqlsrv_fetch_array($result))
+					{
+						$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
+					}
+				}
+				@sqlsrv_query($this->db_connect_id, 'SET SHOWPLAN_TEXT OFF;');
+				@sqlsrv_free_stmt($result);
+
+				if ($html_table)
+				{
+					$this->html_hold .= '</table>';
+				}
+			break;
+
+			case 'fromcache':
+				$endtime = explode(' ', microtime());
+				$endtime = $endtime[0] + $endtime[1];
+
+				$result = @sqlsrv_query($this->db_connect_id, $query);
+				while ($void = @sqlsrv_fetch_array($result))
+				{
+					// Take the time spent on parsing rows into account
+				}
+				@sqlsrv_free_stmt($result);
+
+				$splittime = explode(' ', microtime());
+				$splittime = $splittime[0] + $splittime[1];
+
+				$this->sql_report('record_fromcache', $query, $endtime, $splittime);
+
+			break;
+		}
+	}
+
+	/**
+	* Utility method used to retrieve number of rows
+	* Emulates mysql_num_rows
+	* Used in acp_database.php -> write_data_mssqlnative()
+	* Requires a static or keyset cursor to be definde via
+	* mssqlnative_set_query_options()
+	*/
+	function mssqlnative_num_rows($res)
+	{
+		if ($res !== false)
+		{
+			return sqlsrv_num_rows($res);
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	/**
+	* Allows setting mssqlnative specific query options passed to sqlsrv_query as 4th parameter.
+	*/
+	function mssqlnative_set_query_options($options)
+	{
+		$this->query_options = $options;
+	}
+}