mirror of
https://github.com/phpbb/phpbb.git
synced 2025-06-08 20:38:52 +00:00
90a957ad26
PHPBB3-11015 This allows us to just create the object without having to include the driver first. However, it also means that users must specify the full class name in config.php
454 lines
9.6 KiB
PHP
454 lines
9.6 KiB
PHP
<?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;
|
|
}
|
|
|
|
/**
|
|
* MSSQL Database Abstraction Layer
|
|
* Minimum Requirement is MSSQL 2000+
|
|
* @package dbal
|
|
*/
|
|
class phpbb_db_driver_mssql extends phpbb_db_driver
|
|
{
|
|
/**
|
|
* Connect to server
|
|
*/
|
|
function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
|
|
{
|
|
$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 : '');
|
|
|
|
@ini_set('mssql.charset', 'UTF-8');
|
|
@ini_set('mssql.textlimit', 2147483647);
|
|
@ini_set('mssql.textsize', 2147483647);
|
|
|
|
$this->db_connect_id = ($this->persistency) ? @mssql_pconnect($this->server, $this->user, $sqlpassword, $new_link) : @mssql_connect($this->server, $this->user, $sqlpassword, $new_link);
|
|
|
|
if ($this->db_connect_id && $this->dbname != '')
|
|
{
|
|
if (!@mssql_select_db($this->dbname, $this->db_connect_id))
|
|
{
|
|
@mssql_close($this->db_connect_id);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
$result_id = @mssql_query("SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY('productlevel'), SERVERPROPERTY('edition')", $this->db_connect_id);
|
|
|
|
$row = false;
|
|
if ($result_id)
|
|
{
|
|
$row = @mssql_fetch_assoc($result_id);
|
|
@mssql_free_result($result_id);
|
|
}
|
|
|
|
$this->sql_server_version = ($row) ? trim(implode(' ', $row)) : 0;
|
|
|
|
if (!empty($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 . ' + ' . $expr2;
|
|
}
|
|
|
|
/**
|
|
* SQL Transaction
|
|
* @access private
|
|
*/
|
|
function _sql_transaction($status = 'begin')
|
|
{
|
|
switch ($status)
|
|
{
|
|
case 'begin':
|
|
return @mssql_query('BEGIN TRANSACTION', $this->db_connect_id);
|
|
break;
|
|
|
|
case 'commit':
|
|
return @mssql_query('COMMIT TRANSACTION', $this->db_connect_id);
|
|
break;
|
|
|
|
case 'rollback':
|
|
return @mssql_query('ROLLBACK TRANSACTION', $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_EXTRA'))
|
|
{
|
|
$this->sql_report('start', $query);
|
|
}
|
|
|
|
$this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;
|
|
$this->sql_add_num_queries($this->query_result);
|
|
|
|
if ($this->query_result === false)
|
|
{
|
|
if (($this->query_result = @mssql_query($query, $this->db_connect_id)) === false)
|
|
{
|
|
$this->sql_error($query);
|
|
}
|
|
|
|
if (defined('DEBUG_EXTRA'))
|
|
{
|
|
$this->sql_report('stop', $query);
|
|
}
|
|
|
|
if ($cache_ttl && method_exists($cache, 'sql_save'))
|
|
{
|
|
$this->open_queries[(int) $this->query_result] = $this->query_result;
|
|
$cache->sql_save($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_EXTRA'))
|
|
{
|
|
$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)
|
|
{
|
|
$this->query_result = false;
|
|
|
|
// Since TOP is only returning a set number of rows we won't need it if total is set to 0 (return all rows)
|
|
if ($total)
|
|
{
|
|
// We need to grab the total number of rows + the offset number of rows to get the correct result
|
|
if (strpos($query, 'SELECT DISTINCT') === 0)
|
|
{
|
|
$query = 'SELECT DISTINCT TOP ' . ($total + $offset) . ' ' . substr($query, 15);
|
|
}
|
|
else
|
|
{
|
|
$query = 'SELECT TOP ' . ($total + $offset) . ' ' . substr($query, 6);
|
|
}
|
|
}
|
|
|
|
$result = $this->sql_query($query, $cache_ttl);
|
|
|
|
// Seek by $offset rows
|
|
if ($offset)
|
|
{
|
|
$this->sql_rowseek($offset, $result);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Return number of affected rows
|
|
*/
|
|
function sql_affectedrows()
|
|
{
|
|
return ($this->db_connect_id) ? @mssql_rows_affected($this->db_connect_id) : false;
|
|
}
|
|
|
|
/**
|
|
* Fetch current row
|
|
*/
|
|
function sql_fetchrow($query_id = false)
|
|
{
|
|
global $cache;
|
|
|
|
if ($query_id === false)
|
|
{
|
|
$query_id = $this->query_result;
|
|
}
|
|
|
|
if (isset($cache->sql_rowset[$query_id]))
|
|
{
|
|
return $cache->sql_fetchrow($query_id);
|
|
}
|
|
|
|
if ($query_id === false)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
$row = @mssql_fetch_assoc($query_id);
|
|
|
|
// I hope i am able to remove this later... hopefully only a PHP or MSSQL bug
|
|
if ($row)
|
|
{
|
|
foreach ($row as $key => $value)
|
|
{
|
|
$row[$key] = ($value === ' ' || $value === NULL) ? '' : $value;
|
|
}
|
|
}
|
|
|
|
return $row;
|
|
}
|
|
|
|
/**
|
|
* Seek to given row number
|
|
* rownum is zero-based
|
|
*/
|
|
function sql_rowseek($rownum, &$query_id)
|
|
{
|
|
global $cache;
|
|
|
|
if ($query_id === false)
|
|
{
|
|
$query_id = $this->query_result;
|
|
}
|
|
|
|
if (isset($cache->sql_rowset[$query_id]))
|
|
{
|
|
return $cache->sql_rowseek($rownum, $query_id);
|
|
}
|
|
|
|
return ($query_id !== false) ? @mssql_data_seek($query_id, $rownum) : false;
|
|
}
|
|
|
|
/**
|
|
* Get last inserted id after insert statement
|
|
*/
|
|
function sql_nextid()
|
|
{
|
|
$result_id = @mssql_query('SELECT SCOPE_IDENTITY()', $this->db_connect_id);
|
|
if ($result_id)
|
|
{
|
|
if ($row = @mssql_fetch_assoc($result_id))
|
|
{
|
|
@mssql_free_result($result_id);
|
|
return $row['computed'];
|
|
}
|
|
@mssql_free_result($result_id);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Free sql result
|
|
*/
|
|
function sql_freeresult($query_id = false)
|
|
{
|
|
global $cache;
|
|
|
|
if ($query_id === false)
|
|
{
|
|
$query_id = $this->query_result;
|
|
}
|
|
|
|
if (isset($cache->sql_rowset[$query_id]))
|
|
{
|
|
return $cache->sql_freeresult($query_id);
|
|
}
|
|
|
|
if (isset($this->open_queries[$query_id]))
|
|
{
|
|
unset($this->open_queries[$query_id]);
|
|
return @mssql_free_result($query_id);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Escape string used in sql query
|
|
*/
|
|
function sql_escape($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()
|
|
{
|
|
$error = array(
|
|
'message' => @mssql_get_last_message(),
|
|
'code' => ''
|
|
);
|
|
|
|
// Get error code number
|
|
$result_id = @mssql_query('SELECT @@ERROR as code', $this->db_connect_id);
|
|
if ($result_id)
|
|
{
|
|
$row = @mssql_fetch_assoc($result_id);
|
|
$error['code'] = $row['code'];
|
|
@mssql_free_result($result_id);
|
|
}
|
|
|
|
// Get full error message if possible
|
|
$sql = 'SELECT CAST(description as varchar(255)) as message
|
|
FROM master.dbo.sysmessages
|
|
WHERE error = ' . $error['code'];
|
|
$result_id = @mssql_query($sql);
|
|
|
|
if ($result_id)
|
|
{
|
|
$row = @mssql_fetch_assoc($result_id);
|
|
if (!empty($row['message']))
|
|
{
|
|
$error['message'] .= '<br />' . $row['message'];
|
|
}
|
|
@mssql_free_result($result_id);
|
|
}
|
|
|
|
return $error;
|
|
}
|
|
|
|
/**
|
|
* Build db-specific query data
|
|
* @access private
|
|
*/
|
|
function _sql_custom_build($stage, $data)
|
|
{
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Close sql connection
|
|
* @access private
|
|
*/
|
|
function _sql_close()
|
|
{
|
|
return @mssql_close($this->db_connect_id);
|
|
}
|
|
|
|
/**
|
|
* Build db-specific report
|
|
* @access private
|
|
*/
|
|
function _sql_report($mode, $query = '')
|
|
{
|
|
switch ($mode)
|
|
{
|
|
case 'start':
|
|
$html_table = false;
|
|
@mssql_query('SET SHOWPLAN_TEXT ON;', $this->db_connect_id);
|
|
if ($result = @mssql_query($query, $this->db_connect_id))
|
|
{
|
|
@mssql_next_result($result);
|
|
while ($row = @mssql_fetch_row($result))
|
|
{
|
|
$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
|
|
}
|
|
}
|
|
@mssql_query('SET SHOWPLAN_TEXT OFF;', $this->db_connect_id);
|
|
@mssql_free_result($result);
|
|
|
|
if ($html_table)
|
|
{
|
|
$this->html_hold .= '</table>';
|
|
}
|
|
break;
|
|
|
|
case 'fromcache':
|
|
$endtime = explode(' ', microtime());
|
|
$endtime = $endtime[0] + $endtime[1];
|
|
|
|
$result = @mssql_query($query, $this->db_connect_id);
|
|
while ($void = @mssql_fetch_assoc($result))
|
|
{
|
|
// Take the time spent on parsing rows into account
|
|
}
|
|
@mssql_free_result($result);
|
|
|
|
$splittime = explode(' ', microtime());
|
|
$splittime = $splittime[0] + $splittime[1];
|
|
|
|
$this->sql_report('record_fromcache', $query, $endtime, $splittime);
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|