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Frank Karlitschek authored
finish the application store feature so that users can download and install ownCloud apps from our website. there is still a small problem with write permissions. will look into this later
Frank Karlitschek authoredfinish the application store feature so that users can download and install ownCloud apps from our website. there is still a small problem with write permissions. will look into this later
api.php 5.73 KiB
<?php
/**
* ownCloud
*
* @author Tom Needham
* @author Michael Gapczynski
* @author Bart Visscher
* @copyright 2012 Tom Needham tom@owncloud.com
* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
* @copyright 2012 Bart Visscher bartv@thisnet.nl
*
* 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 OC_API {
/**
* API authentication levels
*/
const GUEST_AUTH = 0;
const USER_AUTH = 1;
const SUBADMIN_AUTH = 2;
const ADMIN_AUTH = 3;
private static $server;
/**
* initialises the OAuth store and server
*/
private static function init() {
self::$server = new OC_OAuth_Server(new OC_OAuth_Store());
}
/**
* api actions
*/
protected static $actions = array();
/**
* registers an api call
* @param string $method the http method
* @param string $url the url to match
* @param callable $action the function to run
* @param string $app the id of the app registering the call
* @param int $authLevel the level of authentication required for the call
* @param array $defaults
* @param array $requirements
*/
public static function register($method, $url, $action, $app,
$authLevel = OC_API::USER_AUTH,
$defaults = array(),
$requirements = array()) {
$name = strtolower($method).$url;
$name = str_replace(array('/', '{', '}'), '_', $name);
if(!isset(self::$actions[$name])) {
OC::getRouter()->useCollection('ocs');
OC::getRouter()->create($name, $url)
->method($method)
->action('OC_API', 'call');
self::$actions[$name] = array();
}
self::$actions[$name] = array('app' => $app, 'action' => $action, 'authlevel' => $authLevel);
}
/**
* handles an api call
* @param array $parameters
*/
public static function call($parameters) {
// Prepare the request variables
if($_SERVER['REQUEST_METHOD'] == 'PUT') {
parse_str(file_get_contents("php://input"), $parameters['_put']);
} else if($_SERVER['REQUEST_METHOD'] == 'DELETE') {
parse_str(file_get_contents("php://input"), $parameters['_delete']);
}
$name = $parameters['_route'];
// Check authentication and availability
if(self::isAuthorised(self::$actions[$name])) {
if(is_callable(self::$actions[$name]['action'])) {
$response = call_user_func(self::$actions[$name]['action'], $parameters);
if(!($response instanceof OC_OCS_Result)) {
$response = new OC_OCS_Result(null, 996, 'Internal Server Error');
}
} else {
$response = new OC_OCS_Result(null, 998, 'Api method not found');
}
} else {
header('WWW-Authenticate: Basic realm="Authorization Required"');
header('HTTP/1.0 401 Unauthorized');
$response = new OC_OCS_Result(null, 997, 'Unauthorised');
}
// Send the response
$formats = array('json', 'xml');
$format = !empty($_GET['format']) && in_array($_GET['format'], $formats) ? $_GET['format'] : 'xml';
self::respond($response, $format);
// logout the user to be stateless
OC_User::logout();
}
/**
* authenticate the api call
* @param array $action the action details as supplied to OC_API::register()
* @return bool
*/
private static function isAuthorised($action) {
$level = $action['authlevel'];
switch($level) {
case OC_API::GUEST_AUTH:
// Anyone can access
return true;
break;
case OC_API::USER_AUTH:
// User required
return self::loginUser();
break;
case OC_API::SUBADMIN_AUTH:
// Check for subadmin
$user = self::loginUser();
if(!$user) {
return false;
} else {
$subAdmin = OC_SubAdmin::isSubAdmin($user);
if($subAdmin) {
return true;
} else {
return false;
}
}
break;
case OC_API::ADMIN_AUTH:
// Check for admin
$user = self::loginUser();
if(!$user) {
return false;
} else {
return OC_User::isAdminUser($user);
}
break;
default:
// oops looks like invalid level supplied
return false;
break;
}
}
/**
* http basic auth
* @return string|false (username, or false on failure)
*/
private static function loginUser(){
$authUser = isset($_SERVER['PHP_AUTH_USER']) ? $_SERVER['PHP_AUTH_USER'] : '';
$authPw = isset($_SERVER['PHP_AUTH_PW']) ? $_SERVER['PHP_AUTH_PW'] : '';
return OC_User::login($authUser, $authPw) ? $authUser : false;
}
/**
* respond to a call
* @param int|array $result the result from the api method
* @param string $format the format xml|json
*/
private static function respond($result, $format='xml') {
$response = array('ocs' => $result->getResult());
if ($format == 'json') {
OC_JSON::encodedPrint($response);
} else if ($format == 'xml') {
header('Content-type: text/xml; charset=UTF-8');
$writer = new XMLWriter();
$writer->openMemory();
$writer->setIndent( true );
$writer->startDocument();
self::toXML($response, $writer);
$writer->endDocument();
echo $writer->outputMemory(true);
}
}
private static function toXML($array, $writer) {
foreach($array as $k => $v) {
if ($k[0] === '@') {
$writer->writeAttribute(substr($k, 1), $v);
continue;
} else if (is_numeric($k)) {
$k = 'element';
}
if(is_array($v)) {
$writer->startElement($k);
self::toXML($v, $writer);
$writer->endElement();
} else {
$writer->writeElement($k, $v);
}
}
}
}