Make possible to set the expected status of the well known URL check

The check is based on the HTTP status returned by the URL, and different
URLs may return different status (for example, DAV returns 207, while
a service like WebFinger would return 200), so the expected status needs
to be set depending on the URL.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

core/js/setupchecks.js

@@ -52,9 +52,14 @@
 		 * @param url the URL to test
 		 * @param placeholderUrl the placeholder URL - can be found at oc_defaults.docPlaceholderUrl
 		 * @param {boolean} runCheck if this is set to false the check is skipped and no error is returned
+		 * @param {int} expectedStatus the expected HTTP status to be returned by the URL, 207 by default
 		 * @return $.Deferred object resolved with an array of error messages
 		 */
-		checkWellKnownUrl: function(url, placeholderUrl, runCheck) {
+		checkWellKnownUrl: function(url, placeholderUrl, runCheck, expectedStatus) {
+			if (expectedStatus === undefined) {
+				expectedStatus = 207;
+			}
+
 			var deferred = $.Deferred();
 
 			if(runCheck === false) {
@@ -63,7 +68,7 @@
 			}
 			var afterCall = function(xhr) {
 				var messages = [];
-				if (xhr.status !== 207) {
+				if (xhr.status !== expectedStatus) {
 					var docUrl = placeholderUrl.replace('PLACEHOLDER', 'admin-setup-well-known-URL');
 					messages.push({
 						msg: t('core', 'Your web server is not properly set up to resolve "{url}". Further information can be found in the <a target="_blank" rel="noreferrer noopener" href="{docLink}">documentation</a>.', { docLink: docUrl, url: url }),

core/js/tests/specs/setupchecksSpec.js

@@ -61,8 +61,8 @@ describe('OC.SetupChecks tests', function() {
 	});
 
 	describe('checkWellKnownUrl', function() {
-		it('should fail with another response status code than 207', function(done) {
-			var async = OC.SetupChecks.checkWellKnownUrl('/.well-known/caldav', 'http://example.org/PLACEHOLDER', true);
+		it('should fail with another response status code than the expected one', function(done) {
+			var async = OC.SetupChecks.checkWellKnownUrl('/.well-known/caldav', 'http://example.org/PLACEHOLDER', true, 207);
 
 			suite.server.requests[0].respond(200);
 
@@ -75,7 +75,18 @@ describe('OC.SetupChecks tests', function() {
 			});
 		});
 
-		it('should return no error with a response status code of 207', function(done) {
+		it('should return no error with the expected response status code', function(done) {
+			var async = OC.SetupChecks.checkWellKnownUrl('/.well-known/caldav', 'http://example.org/PLACEHOLDER', true, 207);
+
+			suite.server.requests[0].respond(207);
+
+			async.done(function( data, s, x ){
+				expect(data).toEqual([]);
+				done();
+			});
+		});
+
+		it('should return no error with the default expected response status code', function(done) {
 			var async = OC.SetupChecks.checkWellKnownUrl('/.well-known/caldav', 'http://example.org/PLACEHOLDER', true);
 
 			suite.server.requests[0].respond(207);