set content-type on ocs exceptions

lib/private/api.php

@@ -116,9 +116,7 @@ class OC_API {
 				);
 		}
 		$response = self::mergeResponses($responses);
-		$formats = array('json', 'xml');
-
-		$format = !empty($_GET['format']) && in_array($_GET['format'], $formats) ? $_GET['format'] : 'xml';
+		$format = self::requestedFormat();
 		if (self::$logoutRequired) {
 			OC_User::logout();
 		}
@@ -350,4 +348,33 @@ class OC_API {
 		}
 	}
 
+	/**
+	 * @return string
+	 */
+	public static function requestedFormat() {
+		$formats = array('json', 'xml');
+
+		$format = !empty($_GET['format']) && in_array($_GET['format'], $formats) ? $_GET['format'] : 'xml';
+		return $format;
+	}
+
+	/**
+	 * Based on the requested format the response content type is set
+	 */
+	public static function setOcsContentType() {
+		$format = \OC_API::requestedFormat();
+		if ($format === 'xml') {
+			header('Content-type: text/xml; charset=UTF-8');
+			return;
+		}
+
+		if ($format === 'json') {
+			header('Content-Type: application/json; charset=utf-8');
+			return;
+		}
+
+		header('Content-Type: application/octet-stream; charset=utf-8');
+	}
+
+
 }

ocs/v1.php

@@ -28,8 +28,11 @@ use Symfony\Component\Routing\Exception\MethodNotAllowedException;
 try {
 	OC::getRouter()->match('/ocs'.OC_Request::getRawPathInfo());
 } catch (ResourceNotFoundException $e) {
+	OC_API::setContentType();
 	OC_OCS::notFound();
 } catch (MethodNotAllowedException $e) {
+	setOcsContentType();
+	OC_API::setContentType();
 	OC_Response::setStatus(405);
 }