899 lines
26 KiB
PHP
899 lines
26 KiB
PHP
<?php
|
|
/**
|
|
* ownCloud
|
|
*
|
|
* @author Frank Karlitschek
|
|
* @copyright 2012 Frank Karlitschek frank@owncloud.org
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
|
|
* License as published by the Free Software Foundation; either
|
|
* version 3 of the License, or any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
class DatabaseException extends Exception{
|
|
private $query;
|
|
|
|
public function __construct($message, $query){
|
|
parent::__construct($message);
|
|
$this->query = $query;
|
|
}
|
|
|
|
public function getQuery(){
|
|
return $this->query;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This class manages the access to the database. It basically is a wrapper for
|
|
* MDB2 with some adaptions.
|
|
*/
|
|
class OC_DB {
|
|
const BACKEND_PDO=0;
|
|
const BACKEND_MDB2=1;
|
|
|
|
static private $preparedQueries = array();
|
|
|
|
/**
|
|
* @var MDB2_Driver_Common
|
|
*/
|
|
static private $connection; //the prefered connection to use, either PDO or MDB2
|
|
static private $backend=null;
|
|
/**
|
|
* @var MDB2_Driver_Common
|
|
*/
|
|
static private $MDB2=null;
|
|
/**
|
|
* @var PDO
|
|
*/
|
|
static private $PDO=null;
|
|
/**
|
|
* @var MDB2_Schema
|
|
*/
|
|
static private $schema=null;
|
|
static private $inTransaction=false;
|
|
static private $prefix=null;
|
|
static private $type=null;
|
|
|
|
/**
|
|
* check which backend we should use
|
|
* @return int BACKEND_MDB2 or BACKEND_PDO
|
|
*/
|
|
private static function getDBBackend() {
|
|
//check if we can use PDO, else use MDB2 (installation always needs to be done my mdb2)
|
|
if(class_exists('PDO') && OC_Config::getValue('installed', false)) {
|
|
$type = OC_Config::getValue( "dbtype", "sqlite" );
|
|
if($type=='oci') { //oracle also always needs mdb2
|
|
return self::BACKEND_MDB2;
|
|
}
|
|
if($type=='sqlite3') $type='sqlite';
|
|
$drivers=PDO::getAvailableDrivers();
|
|
if(array_search($type, $drivers)!==false) {
|
|
return self::BACKEND_PDO;
|
|
}
|
|
}
|
|
return self::BACKEND_MDB2;
|
|
}
|
|
|
|
/**
|
|
* @brief connects to the database
|
|
* @param int $backend
|
|
* @return bool true if connection can be established or false on error
|
|
*
|
|
* Connects to the database as specified in config.php
|
|
*/
|
|
public static function connect($backend=null) {
|
|
if(self::$connection) {
|
|
return true;
|
|
}
|
|
if(is_null($backend)) {
|
|
$backend=self::getDBBackend();
|
|
}
|
|
if($backend==self::BACKEND_PDO) {
|
|
$success = self::connectPDO();
|
|
self::$connection=self::$PDO;
|
|
self::$backend=self::BACKEND_PDO;
|
|
}else{
|
|
$success = self::connectMDB2();
|
|
self::$connection=self::$MDB2;
|
|
self::$backend=self::BACKEND_MDB2;
|
|
}
|
|
return $success;
|
|
}
|
|
|
|
/**
|
|
* connect to the database using pdo
|
|
*
|
|
* @return bool
|
|
*/
|
|
public static function connectPDO() {
|
|
if(self::$connection) {
|
|
if(self::$backend==self::BACKEND_MDB2) {
|
|
self::disconnect();
|
|
}else{
|
|
return true;
|
|
}
|
|
}
|
|
self::$preparedQueries = array();
|
|
// 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", "" );
|
|
$type = OC_Config::getValue( "dbtype", "sqlite" );
|
|
if(strpos($host, ':')) {
|
|
list($host, $port)=explode(':', $host, 2);
|
|
}else{
|
|
$port=false;
|
|
}
|
|
$opts = array();
|
|
$datadir=OC_Config::getValue( "datadirectory", OC::$SERVERROOT.'/data' );
|
|
|
|
// do nothing if the connection already has been established
|
|
if(!self::$PDO) {
|
|
// Add the dsn according to the database type
|
|
switch($type) {
|
|
case 'sqlite':
|
|
$dsn='sqlite2:'.$datadir.'/'.$name.'.db';
|
|
break;
|
|
case 'sqlite3':
|
|
$dsn='sqlite:'.$datadir.'/'.$name.'.db';
|
|
break;
|
|
case 'mysql':
|
|
if($port) {
|
|
$dsn='mysql:dbname='.$name.';host='.$host.';port='.$port;
|
|
}else{
|
|
$dsn='mysql:dbname='.$name.';host='.$host;
|
|
}
|
|
$opts[PDO::MYSQL_ATTR_INIT_COMMAND] = "SET NAMES 'UTF8'";
|
|
break;
|
|
case 'pgsql':
|
|
if($port) {
|
|
$dsn='pgsql:dbname='.$name.';host='.$host.';port='.$port;
|
|
}else{
|
|
$dsn='pgsql:dbname='.$name.';host='.$host;
|
|
}
|
|
/**
|
|
* Ugly fix for pg connections pbm when password use spaces
|
|
*/
|
|
$e_user = addslashes($user);
|
|
$e_password = addslashes($pass);
|
|
$pass = $user = null;
|
|
$dsn .= ";user='$e_user';password='$e_password'";
|
|
/** END OF FIX***/
|
|
break;
|
|
case 'oci': // Oracle with PDO is unsupported
|
|
if ($port) {
|
|
$dsn = 'oci:dbname=//' . $host . ':' . $port . '/' . $name;
|
|
} else {
|
|
$dsn = 'oci:dbname=//' . $host . '/' . $name;
|
|
}
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
try{
|
|
self::$PDO=new PDO($dsn, $user, $pass, $opts);
|
|
}catch(PDOException $e) {
|
|
OC_Log::write('core', $e->getMessage(), OC_Log::FATAL);
|
|
OC_User::setUserId(null);
|
|
|
|
// send http status 503
|
|
header('HTTP/1.1 503 Service Temporarily Unavailable');
|
|
header('Status: 503 Service Temporarily Unavailable');
|
|
OC_Template::printErrorPage('Failed to connect to database');
|
|
die();
|
|
}
|
|
// We always, really always want associative arrays
|
|
self::$PDO->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
|
|
self::$PDO->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* connect to the database using mdb2
|
|
*/
|
|
public static function connectMDB2() {
|
|
if(self::$connection) {
|
|
if(self::$backend==self::BACKEND_PDO) {
|
|
self::disconnect();
|
|
}else{
|
|
return true;
|
|
}
|
|
}
|
|
self::$preparedQueries = array();
|
|
// 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", "" );
|
|
$type = OC_Config::getValue( "dbtype", "sqlite" );
|
|
$SERVERROOT=OC::$SERVERROOT;
|
|
$datadir=OC_Config::getValue( "datadirectory", "$SERVERROOT/data" );
|
|
|
|
// do nothing if the connection already has been established
|
|
if(!self::$MDB2) {
|
|
// Require MDB2.php (not required in the head of the file so we only load it when needed)
|
|
require_once 'MDB2.php';
|
|
|
|
// Prepare options array
|
|
$options = array(
|
|
'portability' => MDB2_PORTABILITY_ALL - MDB2_PORTABILITY_FIX_CASE,
|
|
'log_line_break' => '<br>',
|
|
'idxname_format' => '%s',
|
|
'debug' => true,
|
|
'quote_identifier' => true
|
|
);
|
|
|
|
// Add the dsn according to the database type
|
|
switch($type) {
|
|
case 'sqlite':
|
|
case 'sqlite3':
|
|
$dsn = array(
|
|
'phptype' => $type,
|
|
'database' => "$datadir/$name.db",
|
|
'mode' => '0644'
|
|
);
|
|
break;
|
|
case 'mysql':
|
|
$dsn = array(
|
|
'phptype' => 'mysql',
|
|
'username' => $user,
|
|
'password' => $pass,
|
|
'hostspec' => $host,
|
|
'database' => $name
|
|
);
|
|
break;
|
|
case 'pgsql':
|
|
$dsn = array(
|
|
'phptype' => 'pgsql',
|
|
'username' => $user,
|
|
'password' => $pass,
|
|
'hostspec' => $host,
|
|
'database' => $name
|
|
);
|
|
break;
|
|
case 'oci':
|
|
$dsn = array(
|
|
'phptype' => 'oci8',
|
|
'username' => $user,
|
|
'password' => $pass,
|
|
'charset' => 'AL32UTF8',
|
|
);
|
|
if ($host != '') {
|
|
$dsn['hostspec'] = $host;
|
|
$dsn['database'] = $name;
|
|
} else { // use dbname for hostspec
|
|
$dsn['hostspec'] = $name;
|
|
$dsn['database'] = $user;
|
|
}
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
// Try to establish connection
|
|
self::$MDB2 = MDB2::factory( $dsn, $options );
|
|
|
|
// Die if we could not connect
|
|
if( PEAR::isError( self::$MDB2 )) {
|
|
OC_Log::write('core', self::$MDB2->getUserInfo(), OC_Log::FATAL);
|
|
OC_Log::write('core', self::$MDB2->getMessage(), 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();
|
|
}
|
|
|
|
// We always, really always want associative arrays
|
|
self::$MDB2->setFetchMode(MDB2_FETCHMODE_ASSOC);
|
|
}
|
|
|
|
// we are done. great!
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Prepare a SQL query
|
|
* @param string $query Query string
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return MDB2_Statement_Common prepared SQL query
|
|
*
|
|
* SQL query via MDB2 prepare(), needs to be execute()'d!
|
|
*/
|
|
static public function prepare( $query , $limit=null, $offset=null ) {
|
|
|
|
if (!is_null($limit) && $limit != -1) {
|
|
if (self::$backend == self::BACKEND_MDB2) {
|
|
//MDB2 uses or emulates limits & offset internally
|
|
self::$MDB2->setLimit($limit, $offset);
|
|
} else {
|
|
//PDO does not handle limit and offset.
|
|
//FIXME: check limit notation for other dbs
|
|
//the following sql thus might needs to take into account db ways of representing it
|
|
//(oracle has no LIMIT / OFFSET)
|
|
$limit = (int)$limit;
|
|
$limitsql = ' LIMIT ' . $limit;
|
|
if (!is_null($offset)) {
|
|
$offset = (int)$offset;
|
|
$limitsql .= ' OFFSET ' . $offset;
|
|
}
|
|
//insert limitsql
|
|
if (substr($query, -1) == ';') { //if query ends with ;
|
|
$query = substr($query, 0, -1) . $limitsql . ';';
|
|
} else {
|
|
$query.=$limitsql;
|
|
}
|
|
}
|
|
} else {
|
|
if (isset(self::$preparedQueries[$query])) {
|
|
return self::$preparedQueries[$query];
|
|
}
|
|
}
|
|
$rawQuery = $query;
|
|
|
|
// Optimize the query
|
|
$query = self::processQuery( $query );
|
|
|
|
self::connect();
|
|
// return the result
|
|
if(self::$backend==self::BACKEND_MDB2) {
|
|
$result = self::$connection->prepare( $query );
|
|
|
|
// Die if we have an error (error means: bad query, not 0 results!)
|
|
if( PEAR::isError($result)) {
|
|
throw new DatabaseException($result->getMessage(), $query);
|
|
}
|
|
}else{
|
|
try{
|
|
$result=self::$connection->prepare($query);
|
|
}catch(PDOException $e) {
|
|
throw new DatabaseException($e->getMessage(), $query);
|
|
}
|
|
$result=new PDOStatementWrapper($result);
|
|
}
|
|
if (is_null($limit) || $limit == -1) {
|
|
self::$preparedQueries[$rawQuery] = $result;
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @brief gets last value of autoincrement
|
|
* @param string $table The optional table name (will replace *PREFIX*) and add sequence suffix
|
|
* @return int id
|
|
*
|
|
* MDB2 lastInsertID()
|
|
*
|
|
* Call this method right after the insert command or other functions may
|
|
* cause trouble!
|
|
*/
|
|
public static function insertid($table=null) {
|
|
self::connect();
|
|
$type = OC_Config::getValue( "dbtype", "sqlite" );
|
|
if( $type == 'pgsql' ) {
|
|
$query = self::prepare('SELECT lastval() AS id');
|
|
$row = $query->execute()->fetchRow();
|
|
return $row['id'];
|
|
}else{
|
|
if($table !== null) {
|
|
$prefix = OC_Config::getValue( "dbtableprefix", "oc_" );
|
|
$suffix = OC_Config::getValue( "dbsequencesuffix", "_id_seq" );
|
|
$table = str_replace( '*PREFIX*', $prefix, $table ).$suffix;
|
|
}
|
|
return self::$connection->lastInsertId($table);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Disconnect
|
|
* @return bool
|
|
*
|
|
* This is good bye, good bye, yeah!
|
|
*/
|
|
public static function disconnect() {
|
|
// Cut connection if required
|
|
if(self::$connection) {
|
|
if(self::$backend==self::BACKEND_MDB2) {
|
|
self::$connection->disconnect();
|
|
}
|
|
self::$connection=false;
|
|
self::$MDB2=false;
|
|
self::$PDO=false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief saves database scheme to xml file
|
|
* @param string $file name of file
|
|
* @param int $mode
|
|
* @return bool
|
|
*
|
|
* TODO: write more documentation
|
|
*/
|
|
public static function getDbStructure( $file, $mode=MDB2_SCHEMA_DUMP_STRUCTURE) {
|
|
self::connectScheme();
|
|
|
|
// write the scheme
|
|
$definition = self::$schema->getDefinitionFromDatabase();
|
|
$dump_options = array(
|
|
'output_mode' => 'file',
|
|
'output' => $file,
|
|
'end_of_line' => "\n"
|
|
);
|
|
self::$schema->dumpDatabase( $definition, $dump_options, $mode );
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Creates tables from XML file
|
|
* @param string $file file to read structure from
|
|
* @return bool
|
|
*
|
|
* TODO: write more documentation
|
|
*/
|
|
public static function createDbFromStructure( $file ) {
|
|
$CONFIG_DBNAME = OC_Config::getValue( "dbname", "owncloud" );
|
|
$CONFIG_DBTABLEPREFIX = OC_Config::getValue( "dbtableprefix", "oc_" );
|
|
$CONFIG_DBTYPE = OC_Config::getValue( "dbtype", "sqlite" );
|
|
|
|
// cleanup the cached queries
|
|
self::$preparedQueries = array();
|
|
|
|
self::connectScheme();
|
|
|
|
// read file
|
|
$content = file_get_contents( $file );
|
|
|
|
// Make changes and save them to an in-memory file
|
|
$file2 = 'static://db_scheme';
|
|
$content = str_replace( '*dbname*', $CONFIG_DBNAME, $content );
|
|
$content = str_replace( '*dbprefix*', $CONFIG_DBTABLEPREFIX, $content );
|
|
/* FIXME: use CURRENT_TIMESTAMP for all databases. mysql supports it as a default for DATETIME since 5.6.5 [1]
|
|
* as a fallback we could use <default>0000-01-01 00:00:00</default> everywhere
|
|
* [1] http://bugs.mysql.com/bug.php?id=27645
|
|
* http://dev.mysql.com/doc/refman/5.0/en/timestamp-initialization.html
|
|
* http://www.postgresql.org/docs/8.1/static/functions-datetime.html
|
|
* http://www.sqlite.org/lang_createtable.html
|
|
* http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions037.htm
|
|
*/
|
|
if( $CONFIG_DBTYPE == 'pgsql' ) { //mysql support it too but sqlite doesn't
|
|
$content = str_replace( '<default>0000-00-00 00:00:00</default>',
|
|
'<default>CURRENT_TIMESTAMP</default>', $content );
|
|
}
|
|
|
|
file_put_contents( $file2, $content );
|
|
|
|
// Try to create tables
|
|
$definition = self::$schema->parseDatabaseDefinitionFile( $file2 );
|
|
|
|
//clean up memory
|
|
unlink( $file2 );
|
|
|
|
// Die in case something went wrong
|
|
if( $definition instanceof MDB2_Schema_Error ) {
|
|
OC_Template::printErrorPage( $definition->getMessage().': '.$definition->getUserInfo() );
|
|
}
|
|
if(OC_Config::getValue('dbtype', 'sqlite')==='oci') {
|
|
unset($definition['charset']); //or MDB2 tries SHUTDOWN IMMEDIATE
|
|
$oldname = $definition['name'];
|
|
$definition['name']=OC_Config::getValue( "dbuser", $oldname );
|
|
}
|
|
|
|
$ret=self::$schema->createDatabase( $definition );
|
|
|
|
// Die in case something went wrong
|
|
if( $ret instanceof MDB2_Error ) {
|
|
OC_Template::printErrorPage( self::$MDB2->getDebugOutput().' '.$ret->getMessage() . ': '
|
|
. $ret->getUserInfo() );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief update the database scheme
|
|
* @param string $file file to read structure from
|
|
* @return bool
|
|
*/
|
|
public static function updateDbFromStructure($file) {
|
|
$CONFIG_DBTABLEPREFIX = OC_Config::getValue( "dbtableprefix", "oc_" );
|
|
$CONFIG_DBTYPE = OC_Config::getValue( "dbtype", "sqlite" );
|
|
|
|
self::connectScheme();
|
|
|
|
// read file
|
|
$content = file_get_contents( $file );
|
|
|
|
$previousSchema = self::$schema->getDefinitionFromDatabase();
|
|
if (PEAR::isError($previousSchema)) {
|
|
$error = $previousSchema->getMessage();
|
|
$detail = $previousSchema->getDebugInfo();
|
|
$message = 'Failed to get existing database structure for updating ('.$error.', '.$detail.')';
|
|
OC_Log::write('core', $message, OC_Log::FATAL);
|
|
throw new Exception($message);
|
|
}
|
|
|
|
// Make changes and save them to an in-memory file
|
|
$file2 = 'static://db_scheme';
|
|
$content = str_replace( '*dbname*', $previousSchema['name'], $content );
|
|
$content = str_replace( '*dbprefix*', $CONFIG_DBTABLEPREFIX, $content );
|
|
/* FIXME: use CURRENT_TIMESTAMP for all databases. mysql supports it as a default for DATETIME since 5.6.5 [1]
|
|
* as a fallback we could use <default>0000-01-01 00:00:00</default> everywhere
|
|
* [1] http://bugs.mysql.com/bug.php?id=27645
|
|
* http://dev.mysql.com/doc/refman/5.0/en/timestamp-initialization.html
|
|
* http://www.postgresql.org/docs/8.1/static/functions-datetime.html
|
|
* http://www.sqlite.org/lang_createtable.html
|
|
* http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions037.htm
|
|
*/
|
|
if( $CONFIG_DBTYPE == 'pgsql' ) { //mysql support it too but sqlite doesn't
|
|
$content = str_replace( '<default>0000-00-00 00:00:00</default>',
|
|
'<default>CURRENT_TIMESTAMP</default>', $content );
|
|
}
|
|
file_put_contents( $file2, $content );
|
|
$op = self::$schema->updateDatabase($file2, $previousSchema, array(), false);
|
|
|
|
//clean up memory
|
|
unlink( $file2 );
|
|
|
|
if (PEAR::isError($op)) {
|
|
$error = $op->getMessage();
|
|
$detail = $op->getDebugInfo();
|
|
$message = 'Failed to update database structure ('.$error.', '.$detail.')';
|
|
OC_Log::write('core', $message, OC_Log::FATAL);
|
|
throw new Exception($message);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief connects to a MDB2 database scheme
|
|
* @returns bool
|
|
*
|
|
* Connects to a MDB2 database scheme
|
|
*/
|
|
private static function connectScheme() {
|
|
// We need a mdb2 database connection
|
|
self::connectMDB2();
|
|
self::$MDB2->loadModule('Manager');
|
|
self::$MDB2->loadModule('Reverse');
|
|
|
|
// Connect if this did not happen before
|
|
if(!self::$schema) {
|
|
require_once 'MDB2/Schema.php';
|
|
self::$schema=MDB2_Schema::factory(self::$MDB2);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Insert a row if a matching row doesn't exists.
|
|
* @param string $table. The table to insert into in the form '*PREFIX*tableName'
|
|
* @param array $input. An array of fieldname/value pairs
|
|
* @returns The return value from PDOStatementWrapper->execute()
|
|
*/
|
|
public static function insertIfNotExist($table, $input) {
|
|
self::connect();
|
|
$prefix = OC_Config::getValue( "dbtableprefix", "oc_" );
|
|
$table = str_replace( '*PREFIX*', $prefix, $table );
|
|
|
|
if(is_null(self::$type)) {
|
|
self::$type=OC_Config::getValue( "dbtype", "sqlite" );
|
|
}
|
|
$type = self::$type;
|
|
|
|
$query = '';
|
|
// differences in escaping of table names ('`' for mysql) and getting the current timestamp
|
|
if( $type == 'sqlite' || $type == 'sqlite3' ) {
|
|
// NOTE: For SQLite we have to use this clumsy approach
|
|
// otherwise all fieldnames used must have a unique key.
|
|
$query = 'SELECT * FROM "' . $table . '" WHERE ';
|
|
foreach($input as $key => $value) {
|
|
$query .= $key . " = '" . $value . '\' AND ';
|
|
}
|
|
$query = substr($query, 0, strlen($query) - 5);
|
|
try {
|
|
$stmt = self::prepare($query);
|
|
$result = $stmt->execute();
|
|
} catch(PDOException $e) {
|
|
$entry = 'DB Error: "'.$e->getMessage() . '"<br />';
|
|
$entry .= 'Offending command was: ' . $query . '<br />';
|
|
OC_Log::write('core', $entry, OC_Log::FATAL);
|
|
error_log('DB error: '.$entry);
|
|
OC_Template::printErrorPage( $entry );
|
|
}
|
|
|
|
if($result->numRows() == 0) {
|
|
$query = 'INSERT INTO "' . $table . '" ("'
|
|
. implode('","', array_keys($input)) . '") VALUES("'
|
|
. implode('","', array_values($input)) . '")';
|
|
} else {
|
|
return true;
|
|
}
|
|
} elseif( $type == 'pgsql' || $type == 'oci' || $type == 'mysql') {
|
|
$query = 'INSERT INTO `' .$table . '` ('
|
|
. implode(',', array_keys($input)) . ') SELECT \''
|
|
. implode('\',\'', array_values($input)) . '\' FROM ' . $table . ' WHERE ';
|
|
|
|
foreach($input as $key => $value) {
|
|
$query .= $key . " = '" . $value . '\' AND ';
|
|
}
|
|
$query = substr($query, 0, strlen($query) - 5);
|
|
$query .= ' HAVING COUNT(*) = 0';
|
|
}
|
|
|
|
// TODO: oci should be use " (quote) instead of ` (backtick).
|
|
//OC_Log::write('core', __METHOD__ . ', type: ' . $type . ', query: ' . $query, OC_Log::DEBUG);
|
|
|
|
try {
|
|
$result = self::prepare($query);
|
|
} catch(PDOException $e) {
|
|
$entry = 'DB Error: "'.$e->getMessage() . '"<br />';
|
|
$entry .= 'Offending command was: ' . $query.'<br />';
|
|
OC_Log::write('core', $entry, OC_Log::FATAL);
|
|
error_log('DB error: ' . $entry);
|
|
OC_Template::printErrorPage( $entry );
|
|
}
|
|
|
|
return $result->execute();
|
|
}
|
|
|
|
/**
|
|
* @brief does minor changes to query
|
|
* @param string $query Query string
|
|
* @return string corrected query string
|
|
*
|
|
* This function replaces *PREFIX* with the value of $CONFIG_DBTABLEPREFIX
|
|
* and replaces the ` with ' or " according to the database driver.
|
|
*/
|
|
private static function processQuery( $query ) {
|
|
self::connect();
|
|
// We need Database type and table prefix
|
|
if(is_null(self::$type)) {
|
|
self::$type=OC_Config::getValue( "dbtype", "sqlite" );
|
|
}
|
|
$type = self::$type;
|
|
if(is_null(self::$prefix)) {
|
|
self::$prefix=OC_Config::getValue( "dbtableprefix", "oc_" );
|
|
}
|
|
$prefix = self::$prefix;
|
|
|
|
// differences in escaping of table names ('`' for mysql) and getting the current timestamp
|
|
if( $type == 'sqlite' || $type == 'sqlite3' ) {
|
|
$query = str_replace( '`', '"', $query );
|
|
$query = str_ireplace( 'NOW()', 'datetime(\'now\')', $query );
|
|
$query = str_ireplace( 'UNIX_TIMESTAMP()', 'strftime(\'%s\',\'now\')', $query );
|
|
}elseif( $type == 'pgsql' ) {
|
|
$query = str_replace( '`', '"', $query );
|
|
$query = str_ireplace( 'UNIX_TIMESTAMP()', 'cast(extract(epoch from current_timestamp) as integer)',
|
|
$query );
|
|
}elseif( $type == 'oci' ) {
|
|
$query = str_replace( '`', '"', $query );
|
|
$query = str_ireplace( 'NOW()', 'CURRENT_TIMESTAMP', $query );
|
|
}
|
|
|
|
// replace table name prefix
|
|
$query = str_replace( '*PREFIX*', $prefix, $query );
|
|
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* @brief drop a table
|
|
* @param string $tableName the table to drop
|
|
*/
|
|
public static function dropTable($tableName) {
|
|
self::connectMDB2();
|
|
self::$MDB2->loadModule('Manager');
|
|
self::$MDB2->dropTable($tableName);
|
|
}
|
|
|
|
/**
|
|
* remove all tables defined in a database structure xml file
|
|
* @param string $file the xml file describing the tables
|
|
*/
|
|
public static function removeDBStructure($file) {
|
|
$CONFIG_DBNAME = OC_Config::getValue( "dbname", "owncloud" );
|
|
$CONFIG_DBTABLEPREFIX = OC_Config::getValue( "dbtableprefix", "oc_" );
|
|
self::connectScheme();
|
|
|
|
// read file
|
|
$content = file_get_contents( $file );
|
|
|
|
// Make changes and save them to a temporary file
|
|
$file2 = tempnam( get_temp_dir(), 'oc_db_scheme_' );
|
|
$content = str_replace( '*dbname*', $CONFIG_DBNAME, $content );
|
|
$content = str_replace( '*dbprefix*', $CONFIG_DBTABLEPREFIX, $content );
|
|
file_put_contents( $file2, $content );
|
|
|
|
// get the tables
|
|
$definition = self::$schema->parseDatabaseDefinitionFile( $file2 );
|
|
|
|
// Delete our temporary file
|
|
unlink( $file2 );
|
|
$tables=array_keys($definition['tables']);
|
|
foreach($tables as $table) {
|
|
self::dropTable($table);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief replaces the owncloud tables with a new set
|
|
* @param $file string path to the MDB2 xml db export file
|
|
*/
|
|
public static function replaceDB( $file ) {
|
|
$apps = OC_App::getAllApps();
|
|
self::beginTransaction();
|
|
// Delete the old tables
|
|
self::removeDBStructure( OC::$SERVERROOT . '/db_structure.xml' );
|
|
|
|
foreach($apps as $app) {
|
|
$path = OC_App::getAppPath($app).'/appinfo/database.xml';
|
|
if(file_exists($path)) {
|
|
self::removeDBStructure( $path );
|
|
}
|
|
}
|
|
|
|
// Create new tables
|
|
self::createDBFromStructure( $file );
|
|
self::commit();
|
|
}
|
|
|
|
/**
|
|
* Start a transaction
|
|
* @return bool
|
|
*/
|
|
public static function beginTransaction() {
|
|
self::connect();
|
|
if (self::$backend==self::BACKEND_MDB2 && !self::$connection->supports('transactions')) {
|
|
return false;
|
|
}
|
|
self::$connection->beginTransaction();
|
|
self::$inTransaction=true;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Commit the database changes done during a transaction that is in progress
|
|
* @return bool
|
|
*/
|
|
public static function commit() {
|
|
self::connect();
|
|
if(!self::$inTransaction) {
|
|
return false;
|
|
}
|
|
self::$connection->commit();
|
|
self::$inTransaction=false;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* check if a result is an error, works with MDB2 and PDOException
|
|
* @param mixed $result
|
|
* @return bool
|
|
*/
|
|
public static function isError($result) {
|
|
if(!$result) {
|
|
return true;
|
|
}elseif(self::$backend==self::BACKEND_MDB2 and PEAR::isError($result)) {
|
|
return true;
|
|
}else{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* returns the error code and message as a string for logging
|
|
* works with MDB2 and PDOException
|
|
* @param mixed $error
|
|
* @return string
|
|
*/
|
|
public static function getErrorMessage($error) {
|
|
if ( self::$backend==self::BACKEND_MDB2 and PEAR::isError($error) ) {
|
|
$msg = $error->getCode() . ': ' . $error->getMessage();
|
|
if (defined('DEBUG') && DEBUG) {
|
|
$msg .= '(' . $error->getDebugInfo() . ')';
|
|
}
|
|
} elseif (self::$backend==self::BACKEND_PDO and self::$PDO) {
|
|
$msg = self::$PDO->errorCode() . ': ';
|
|
$errorInfo = self::$PDO->errorInfo();
|
|
if (is_array($errorInfo)) {
|
|
$msg .= 'SQLSTATE = '.$errorInfo[0] . ', ';
|
|
$msg .= 'Driver Code = '.$errorInfo[1] . ', ';
|
|
$msg .= 'Driver Message = '.$errorInfo[2];
|
|
}else{
|
|
$msg = '';
|
|
}
|
|
}else{
|
|
$msg = '';
|
|
}
|
|
return $msg;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* small wrapper around PDOStatement to make it behave ,more like an MDB2 Statement
|
|
*/
|
|
class PDOStatementWrapper{
|
|
/**
|
|
* @var PDOStatement
|
|
*/
|
|
private $statement=null;
|
|
private $lastArguments=array();
|
|
|
|
public function __construct($statement) {
|
|
$this->statement=$statement;
|
|
}
|
|
|
|
/**
|
|
* make execute return the result instead of a bool
|
|
*/
|
|
public function execute($input=array()) {
|
|
$this->lastArguments=$input;
|
|
if(count($input)>0) {
|
|
$result=$this->statement->execute($input);
|
|
}else{
|
|
$result=$this->statement->execute();
|
|
}
|
|
if($result) {
|
|
return $this;
|
|
}else{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* provide numRows
|
|
*/
|
|
public function numRows() {
|
|
$regex = '/^SELECT\s+(?:ALL\s+|DISTINCT\s+)?(?:.*?)\s+FROM\s+(.*)$/i';
|
|
if (preg_match($regex, $this->statement->queryString, $output) > 0) {
|
|
$query = OC_DB::prepare("SELECT COUNT(*) FROM {$output[1]}", PDO::FETCH_NUM);
|
|
return $query->execute($this->lastArguments)->fetchColumn();
|
|
}else{
|
|
return $this->statement->rowCount();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* provide an alias for fetch
|
|
*/
|
|
public function fetchRow() {
|
|
return $this->statement->fetch();
|
|
}
|
|
|
|
/**
|
|
* pass all other function directly to the PDOStatement
|
|
*/
|
|
public function __call($name, $arguments) {
|
|
return call_user_func_array(array($this->statement, $name), $arguments);
|
|
}
|
|
|
|
/**
|
|
* Provide a simple fetchOne.
|
|
* fetch single column from the next row
|
|
* @param int $colnum the column number to fetch
|
|
*/
|
|
public function fetchOne($colnum = 0) {
|
|
return $this->statement->fetchColumn($colnum);
|
|
}
|
|
}
|