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adaptersqlite.php

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  • json.php 2.89 KiB
    <?php
    /**
     * Copyright (c) 2011 Bart Visscher <bartv@thisnet.nl>
     * This file is licensed under the Affero General Public License version 3 or
     * later.
     * See the COPYING-README file.
     */
    
    class OC_JSON{
    	static protected $send_content_type_header = false;
    	/**
    	 * set Content-Type header to jsonrequest
    	 */
    	public static function setContentTypeHeader($type='application/json') {
    		if (!self::$send_content_type_header) {
    			// We send json data
    			header( 'Content-Type: '.$type . '; charset=utf-8');
    			self::$send_content_type_header = true;
    		}
    	}
    
    	/**
    	* Check if the app is enabled, send json error msg if not
    	*/
    	public static function checkAppEnabled($app) {
    		if( !OC_App::isEnabled($app)) {
    			$l = OC_L10N::get('lib');
    			self::error(array( 'data' => array( 'message' => $l->t('Application is not enabled') )));
    			exit();
    		}
    	}
    
    	/**
    	* Check if the user is logged in, send json error msg if not
    	*/
    	public static function checkLoggedIn() {
    		if( !OC_User::isLoggedIn()) {
    			$l = OC_L10N::get('lib');
    			self::error(array( 'data' => array( 'message' => $l->t('Authentication error') )));
    			exit();
    		}
    	}
    
    	/**
    	 * @brief Check an ajax get/post call if the request token is valid.
    	 * @return json Error msg if not valid.
    	 */
    	public static function callCheck() {
    		if( !OC_Util::isCallRegistered()) {
    			$l = OC_L10N::get('lib');
    			self::error(array( 'data' => array( 'message' => $l->t('Token expired. Please reload page.') )));
    			exit();
    		}
    	}
    
    	/**
    	* Check if the user is a admin, send json error msg if not
    	*/
    	public static function checkAdminUser() {
    		if( !OC_User::isAdminUser(OC_User::getUser())) {
    			$l = OC_L10N::get('lib');
    			self::error(array( 'data' => array( 'message' => $l->t('Authentication error') )));
    			exit();
    		}
    	}
    
    	/**
    	* Check if the user is a subadmin, send json error msg if not
    	*/
    	public static function checkSubAdminUser() {
    		if(!OC_SubAdmin::isSubAdmin(OC_User::getUser())) {
    			$l = OC_L10N::get('lib');
    			self::error(array( 'data' => array( 'message' => $l->t('Authentication error') )));
    			exit();
    		}
    	}
    
    	/**
    	* Send json error msg
    	*/
    	public static function error($data = array()) {
    		$data['status'] = 'error';
    		self::encodedPrint($data);
    	}
    
    	/**
    	* Send json success msg
    	*/
    	public static function success($data = array()) {
    		$data['status'] = 'success';
    		self::encodedPrint($data);
    	}
    
    	/**
    	 * Convert OC_L10N_String to string, for use in json encodings
    	 */
    	protected static function to_string(&$value) {
    		if ($value instanceof OC_L10N_String) {
    			$value = (string)$value;
    		}
    	}
    
    	/**
    	* Encode and print $data in json format
    	*/
    	public static function encodedPrint($data, $setContentType=true) {
    		// Disable mimesniffing, don't move this to setContentTypeHeader!
    		header( 'X-Content-Type-Options: nosniff' );
    		if($setContentType) {
    			self::setContentTypeHeader();
    		}
    		array_walk_recursive($data, array('OC_JSON', 'to_string'));
    		echo json_encode($data);
    	}
    }