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<?php
/**
* Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
/**
* small wrapper around \Doctrine\DBAL\Driver\Statement to make it behave, more like an MDB2 Statement
*/
class OC_DB_StatementWrapper {
/**
* @var \Doctrine\DBAL\Driver\Statement
*/
private $statement = null;
private $isManipulation = false;
private $lastArguments = array();
/**
* @param boolean $isManipulation
*/
public function __construct($statement, $isManipulation) {
$this->statement = $statement;
$this->isManipulation = $isManipulation;
}
/**
* pass all other function directly to the \Doctrine\DBAL\Driver\Statement
*/
public function __call($name,$arguments) {
return call_user_func_array(array($this->statement,$name), $arguments);
}
/**
* make execute return the result instead of a bool
*
* @param array $input
* @return \OC_DB_StatementWrapper | int
*/
public function execute($input=array()) {
if(OC_Config::getValue( "log_query", false)) {
$params_str = str_replace("\n", " ", var_export($input, true));
OC_Log::write('core', 'DB execute with arguments : '.$params_str, OC_Log::DEBUG);
}
$this->lastArguments = $input;
if (count($input) > 0) {
if (!isset($type)) {
$type = OC_Config::getValue( "dbtype", "sqlite" );
}
if ($type == 'mssql') {
$input = $this->tryFixSubstringLastArgumentDataForMSSQL($input);
}
$result = $this->statement->execute($input);
} else {
$result = $this->statement->execute();
}
if ($result === false) {
return false;
}
if ($this->isManipulation) {
return $this->statement->rowCount();
} else {
return $this;
}
}
private function tryFixSubstringLastArgumentDataForMSSQL($input) {
$query = $this->statement->getWrappedStatement()->queryString;
$pos = stripos ($query, 'SUBSTRING');
if ( $pos === false) {
return $input;
}
try {
$newQuery = '';
$cArg = 0;
$inSubstring = false;
// Create new query
for ($i = 0; $i < strlen ($query); $i++) {
if ($inSubstring == false) {
// Defines when we should start inserting values
if (substr ($query, $i, 9) == 'SUBSTRING') {
$inSubstring = true;
}
} else {
// Defines when we should stop inserting values
if (substr ($query, $i, 1) == ')') {
$inSubstring = false;
}
}
if (substr ($query, $i, 1) == '?') {
// We found a question mark
if ($inSubstring) {
$newQuery .= $input[$cArg];
//
// Remove from input array
//
array_splice ($input, $cArg, 1);
} else {
$newQuery .= substr ($query, $i, 1);
$cArg++;
}
} else {
$newQuery .= substr ($query, $i, 1);
}
}
// The global data we need
$name = OC_Config::getValue( "dbname", "owncloud" );
$host = OC_Config::getValue( "dbhost", "" );
$user = OC_Config::getValue( "dbuser", "" );
$pass = OC_Config::getValue( "dbpassword", "" );
if (strpos($host, ':')) {
list($host, $port) = explode(':', $host, 2);
} else {
$port = false;
}
$opts = array();
if ($port) {
$dsn = 'sqlsrv:Server='.$host.','.$port.';Database='.$name;
} else {
$dsn = 'sqlsrv:Server='.$host.';Database='.$name;
}
$PDO = new PDO($dsn, $user, $pass, $opts);
$PDO->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
$PDO->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$this->statement = $PDO->prepare($newQuery);
$this->lastArguments = $input;
return $input;
} catch (PDOException $e){
$entry = 'PDO DB Error: "'.$e->getMessage().'"<br />';
$entry .= 'Offending command was: '.$this->statement->queryString .'<br />';
$entry .= 'Input parameters: ' .print_r($input, true).'<br />';
$entry .= 'Stack trace: ' .$e->getTraceAsString().'<br />';
OC_Log::write('core', $entry, OC_Log::FATAL);
OC_User::setUserId(null);
// send http status 503
header('HTTP/1.1 503 Service Temporarily Unavailable');
header('Status: 503 Service Temporarily Unavailable');
OC_Template::printErrorPage('Failed to connect to database');
die ($entry);
}
}
/**
* provide an alias for fetch
*/
public function fetchRow() {
return $this->statement->fetch();
}
/**
* Provide a simple fetchOne.
* fetch single column from the next row
* @param int $colnum the column number to fetch
* @return string
*/
public function fetchOne($colnum = 0) {
return $this->statement->fetchColumn($colnum);
}
/**
* Binds a PHP variable to a corresponding named or question mark placeholder in the
* SQL statement that was use to prepare the statement.
*
* @param mixed $column Either the placeholder name or the 1-indexed placeholder index
* @param mixed $variable The variable to bind
* @param integer|null $type one of the PDO::PARAM_* constants
* @param integer|null $length max length when using an OUT bind
* @return boolean
*/
public function bindParam($column, &$variable, $type = null, $length = null){
return $this->statement->bindParam($column, $variable, $type, $length);
}
}
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