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<?php
/**
* Piwik - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Db\Adapter\Pdo;
use Exception;
use PDO;
use PDOException;
use Piwik\Config;
use Piwik\Db\AdapterInterface;
use Piwik\Piwik;
use Zend_Db;
use Zend_Db_Adapter_Exception;
use Zend_Db_Adapter_Pdo_Mssql;
use Zend_Db_Profiler;
/**
*/
class Mssql extends Zend_Db_Adapter_Pdo_Mssql implements AdapterInterface
{
/**
* Returns connection handle
*
* @throws Zend_Db_Adapter_Exception
* @return resource
*/
public function getConnection()
{
// if we already have a PDO object, no need to re-connect.
if ($this->_connection) {
return $this->_connection;
}
$this->_pdoType = "sqlsrv";
// get the dsn first, because some adapters alter the $_pdoType
//$dsn = $this->_dsn();
// check for PDO extension
if (!extension_loaded('pdo')) {
/**
* @see Zend_Db_Adapter_Exception
*/
throw new \Zend_Db_Adapter_Exception('The PDO extension is required for this adapter but the extension is not loaded');
}
// check the PDO driver is available
if (!in_array($this->_pdoType, PDO::getAvailableDrivers())) {
/**
* @see Zend_Db_Adapter_Exception
*/
throw new \Zend_Db_Adapter_Exception('The ' . $this->_pdoType . ' driver is not currently installed');
}
// create PDO connection
$q = $this->_profiler->queryStart('connect', Zend_Db_Profiler::CONNECT);
// add the persistence flag if we find it in our config array
if (isset($this->_config['persistent']) && ($this->_config['persistent'] == true)) {
$this->_config['driver_options'][PDO::ATTR_PERSISTENT] = true;
}
try {
$serverName = $this->_config["host"];
$database = $this->_config["dbname"];
if (is_null($database)) {
$database = 'master';
}
$uid = $this->_config['username'];
$pwd = $this->_config['password'];
if ($this->_config["port"] != "") {
$serverName = $serverName . "," . $this->_config["port"];
}
$this->_connection = new PDO("sqlsrv:$serverName", $uid, $pwd, array('Database' => $database));
if ($this->_connection === false) {
die(self::FormatErrors(sqlsrv_errors()));
}
/*
$this->_connection = new PDO(
$dsn,
$this->_config['username'],
$this->_config['password'],
$this->_config['driver_options']
);
*/
$this->_profiler->queryEnd($q);
// set the PDO connection to perform case-folding on array keys, or not
$this->_connection->setAttribute(PDO::ATTR_CASE, $this->_caseFolding);
$this->_connection->setAttribute(PDO::SQLSRV_ENCODING_UTF8, true);
// always use exceptions.
$this->_connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
return $this->_connection;
} catch (PDOException $e) {
/**
* @see Zend_Db_Adapter_Exception
*/
throw new \Zend_Db_Adapter_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Reset the configuration variables in this adapter.
*/
public function resetConfig()
{
$this->_config = array();
}
/**
* Return default port.
*
* @return int
*/
public static function getDefaultPort()
{
return 1433;
}
/**
* Check MSSQL version
*
* @throws Exception
*/
public function checkServerVersion()
{
$serverVersion = $this->getServerVersion();
$requiredVersion = Config::getInstance()->General['minimum_mssql_version'];
if (version_compare($serverVersion, $requiredVersion) === -1) {
throw new Exception(Piwik::translate('General_ExceptionDatabaseVersion', array('MSSQL', $serverVersion, $requiredVersion)));
}
}
/**
* Returns the Mssql server version
*
* @return null|string
*/
public function getServerVersion()
{
try {
$stmt = $this->query("SELECT CAST(SERVERPROPERTY('productversion') as VARCHAR) as productversion");
$result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
if (count($result)) {
return $result[0][0];
}
} catch (PDOException $e) {
}
return null;
}
/**
* Check client version compatibility against database server
*
* @throws Exception
*/
public function checkClientVersion()
{
$serverVersion = $this->getServerVersion();
$clientVersion = $this->getClientVersion();
if (version_compare($serverVersion, '10') >= 0
&& version_compare($clientVersion, '10') < 0
) {
throw new Exception(Piwik::translate('General_ExceptionIncompatibleClientServerVersions', array('MSSQL', $clientVersion, $serverVersion)));
}
}
/**
* Returns true if this adapter's required extensions are enabled
*
* @return bool
*/
public static function isEnabled()
{
return extension_loaded('PDO') && extension_loaded('pdo_sqlsrv');
}
/**
* Returns true if this adapter supports blobs as fields
*
* @return bool
*/
public function hasBlobDataType()
{
return true;
}
/**
* Returns true if this adapter supports bulk loading
*
* @return bool
*/
public function hasBulkLoader()
{
/**
* BULK INSERT doesn't have a way to escape a terminator that appears in a value
*
* @link http://msdn.microsoft.com/en-us/library/ms188365.aspx
*/
return false;
}
/**
* Test error number
*
* @param Exception $e
* @param string $errno
* @return bool
*/
public function isErrNo($e, $errno)
{
if (preg_match('/(?:\[|\s)([0-9]{4})(?:\]|\s)/', $e->getMessage(), $match)) {
return $match[1] == $errno;
}
return false;
}
/**
* Is the connection character set equal to utf8?
*
* @return bool
*/
public function isConnectionUTF8()
{
//check the getconnection, it's specified on the connection string.
return true;
}
/**
* Retrieve client version in PHP style
*
* @throws Exception
* @return string
*/
public function getClientVersion()
{
$this->_connect();
try {
$version = $this->_connection->getAttribute(PDO::ATTR_CLIENT_VERSION);
$requiredVersion = Config::getInstance()->General['minimum_mssql_client_version'];
if (version_compare($version['DriverVer'], $requiredVersion) === -1) {
throw new Exception(Piwik::translate('General_ExceptionDatabaseVersion', array('MSSQL', $version['DriverVer'], $requiredVersion)));
} else {
return $version['DriverVer'];
}
} catch (PDOException $e) {
// In case of the driver doesn't support getting attributes
}
return null;
}
}
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