+<?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

+*

+*/

+

+/**

+* @ignore

+*/

+if (!defined('IN_PHPBB'))

+{

+ exit;

+}

+

+/**

+ * Prior to version 1.1 the SQL Server Native PHP driver didn't support sqlsrv_num_rows, or cursor based seeking so we recall all rows into an array

+ * and maintain our own cursor index into that array.

+ */

+class result_mssqlnative

+{

+ public function result_mssqlnative($queryresult = false)

+ {

+ $this->m_cursor = 0;

+ $this->m_rows = array();

+ $this->m_num_fields = sqlsrv_num_fields($queryresult);

+ $this->m_field_meta = sqlsrv_field_metadata($queryresult);

+

+ while ($row = sqlsrv_fetch_array($queryresult, SQLSRV_FETCH_ASSOC))

+ {

+ if ($row !== null)

+ {

+ foreach($row as $k => $v)

+ {

+ if (is_object($v) && method_exists($v, 'format'))

+ {

+ $row[$k] = $v->format("Y-m-d\TH:i:s\Z");

+ }

+ }

+ $this->m_rows[] = $row;//read results into memory, cursors are not supported

+ }

+ }

+

+ $this->m_row_count = sizeof($this->m_rows);

+ }

+

+ private function array_to_obj($array, &$obj)

+ {

+ foreach ($array as $key => $value)

+ {

+ if (is_array($value))

+ {

+ $obj->$key = new stdClass();

+ array_to_obj($value, $obj->$key);

+ }

+ else

+ {

+ $obj->$key = $value;

+ }

+ }

+ return $obj;

+ }

+

+ public function fetch($mode = SQLSRV_FETCH_BOTH, $object_class = 'stdClass')

+ {

+ if ($this->m_cursor >= $this->m_row_count || $this->m_row_count == 0)

+ {

+ return false;

+ }

+

+ $ret = false;

+ $arr_num = array();

+

+ if ($mode == SQLSRV_FETCH_NUMERIC || $mode == SQLSRV_FETCH_BOTH)

+ {

+ foreach($this->m_rows[$this->m_cursor] as $key => $value)

+ {

+ $arr_num[] = $value;

+ }

+ }

+

+ switch ($mode)

+ {

+ case SQLSRV_FETCH_ASSOC:

+ $ret = $this->m_rows[$this->m_cursor];

+ break;

+ case SQLSRV_FETCH_NUMERIC:

+ $ret = $arr_num;

+ break;

+ case 'OBJECT':

+ $ret = $this->array_to_obj($this->m_rows[$this->m_cursor], $o = new $object_class);

+ break;

+ case SQLSRV_FETCH_BOTH:

+ default:

+ $ret = $this->m_rows[$this->m_cursor] + $arr_num;

+ break;

+ }

+ $this->m_cursor++;

+ return $ret;

+ }

+

+ public function get($pos, $fld)

+ {

+ return $this->m_rows[$pos][$fld];

+ }

+

+ public function num_rows()

+ {

+ return $this->m_row_count;

+ }

+

+ public function seek($iRow)

+ {

+ $this->m_cursor = min($iRow, $this->m_row_count);

+ }

+

+ public function num_fields()

+ {

+ return $this->m_num_fields;

+ }

+

+ public function field_name($nr)

+ {

+ $arr_keys = array_keys($this->m_rows[0]);

+ return $arr_keys[$nr];

+ }

+

+ public function field_type($nr)

+ {

+ $i = 0;

+ $int_type = -1;

+ $str_type = '';

+

+ foreach ($this->m_field_meta as $meta)

+ {

+ if ($nr == $i)

+ {

+ $int_type = $meta['Type'];

+ break;

+ }

+ $i++;

+ }

+

+ //http://msdn.microsoft.com/en-us/library/cc296183.aspx contains type table

+ switch ($int_type)

+ {

+ case SQLSRV_SQLTYPE_BIGINT: $str_type = 'bigint'; break;

+ case SQLSRV_SQLTYPE_BINARY: $str_type = 'binary'; break;

+ case SQLSRV_SQLTYPE_BIT: $str_type = 'bit'; break;

+ case SQLSRV_SQLTYPE_CHAR: $str_type = 'char'; break;

+ case SQLSRV_SQLTYPE_DATETIME: $str_type = 'datetime'; break;

+ case SQLSRV_SQLTYPE_DECIMAL/*($precision, $scale)*/: $str_type = 'decimal'; break;

+ case SQLSRV_SQLTYPE_FLOAT: $str_type = 'float'; break;

+ case SQLSRV_SQLTYPE_IMAGE: $str_type = 'image'; break;

+ case SQLSRV_SQLTYPE_INT: $str_type = 'int'; break;

+ case SQLSRV_SQLTYPE_MONEY: $str_type = 'money'; break;

+ case SQLSRV_SQLTYPE_NCHAR/*($charCount)*/: $str_type = 'nchar'; break;

+ case SQLSRV_SQLTYPE_NUMERIC/*($precision, $scale)*/: $str_type = 'numeric'; break;

+ case SQLSRV_SQLTYPE_NVARCHAR/*($charCount)*/: $str_type = 'nvarchar'; break;

+ case SQLSRV_SQLTYPE_NTEXT: $str_type = 'ntext'; break;

+ case SQLSRV_SQLTYPE_REAL: $str_type = 'real'; break;

+ case SQLSRV_SQLTYPE_SMALLDATETIME: $str_type = 'smalldatetime'; break;

+ case SQLSRV_SQLTYPE_SMALLINT: $str_type = 'smallint'; break;

+ case SQLSRV_SQLTYPE_SMALLMONEY: $str_type = 'smallmoney'; break;

+ case SQLSRV_SQLTYPE_TEXT: $str_type = 'text'; break;

+ case SQLSRV_SQLTYPE_TIMESTAMP: $str_type = 'timestamp'; break;

+ case SQLSRV_SQLTYPE_TINYINT: $str_type = 'tinyint'; break;

+ case SQLSRV_SQLTYPE_UNIQUEIDENTIFIER: $str_type = 'uniqueidentifier'; break;

+ case SQLSRV_SQLTYPE_UDT: $str_type = 'UDT'; break;

+ case SQLSRV_SQLTYPE_VARBINARY/*($byteCount)*/: $str_type = 'varbinary'; break;

+ case SQLSRV_SQLTYPE_VARCHAR/*($charCount)*/: $str_type = 'varchar'; break;

+ case SQLSRV_SQLTYPE_XML: $str_type = 'xml'; break;

+ default: $str_type = $int_type;

+ }

+ return $str_type;

+ }

+

+ public function free()

+ {

+ unset($this->m_rows);

+ return;

+ }

+}

+

+/**

+* @package dbal

+*/

+class phpbb_db_driver_mssqlnative extends phpbb_db_driver

+{

+ 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}

+ */

+ public function sql_concatenate($expr1, $expr2)

+ {

+ return $expr1 . ' + ' . $expr2;

+ }

+

+ /**

+ * {@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_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_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 (!empty($this->query_result)) ? @sqlsrv_rows_affected($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 ($cache->sql_exists($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 ($cache->sql_exists($query_id))

+ {

+ return $cache->sql_freeresult($query_id);

+ }

+

+ if (isset($this->open_queries[$query_id]))

+ {

+ unset($this->open_queries[$query_id]);

+ return @sqlsrv_free_stmt($query_id);

+ }

+ return false;

+ }

+

+ /**

+ * Escape string used in sql query

+ */

+ function sql_escape($msg)

+ {

+ return str_replace(array("'", "\0"), array("''", ''), $msg);

+ }

+

+ /**

+ * {@inheritDoc}

+ */

+ function sql_lower_text($column_name)

+ {

+ return "LOWER(SUBSTRING($column_name, 1, DATALENGTH($column_name)))";

+ }

+

+ /**

+ * Build LIKE expression

+ * @access private

+ */

+ function _sql_like_expression($expression)

+ {

+ return $expression . " ESCAPE '\\'";

+ }

+

+ /**

+ * 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;

+ }

+

+ /**

+ * Build db-specific query data

+ * @access private

+ */

+ function _sql_custom_build($stage, $data)

+ {

+ return $data;

+ }

+

+ /**

+ * 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;

+ }

+}