1 files changed, 115 insertions, 0 deletions
diff --git a/lib/private/json.php b/lib/private/json.php
new file mode 100644
index 00000000000..6ba0b13806b
--- /dev/null
+++ b/lib/private/json.php
@@ -0,0 +1,115 @@
+<?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);
+	}
+}