Improve URL validation on setup flow

components/app-core/frontend/src/utils/utils.service.js

@@ -64,6 +64,21 @@
       '$', 'i'
     );
 
+    var localUrlValidationExpression = new RegExp(
+      '^' +
+      // protocol identifier
+      'http(s)?://' +
+      // user:pass authentication
+      '(?:\\S+(?::\\S*)?@)?' +
+      // host name
+      '(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)' +
+      // port number
+      '(?::\\d{2,5})?' +
+      // resource path
+      '(?:[/?#]\\S*)?' +
+      '$', 'i'
+    );
+
     var colorCodes = {
       black: 0,
       red: 1,
@@ -88,6 +103,7 @@
       runInSequence: runInSequence,
       sizeUtilization: sizeUtilization,
       urlValidationExpression: urlValidationExpression,
+      localUrlValidationExpression: localUrlValidationExpression,
       extractCloudFoundryError: extractCloudFoundryError,
       extractCodeEngineError: extractCodeEngineError,
       coloredLog: coloredLog,

components/app-core/frontend/src/view/util/directives/stratosUrlValidator.directive.js

@@ -0,0 +1,22 @@
+(function () {
+  'use strict';
+
+  angular
+    .module('app.view')
+    .directive('stratosUrl', stratosUrl);
+
+  function stratosUrl(appUtilsService) {
+    return {
+      restrict: 'A',
+      require: '?ngModel',
+      link: function (scope, elm, attr, ctrl) {
+        if (!ctrl) {
+          return;
+        }
+        ctrl.$validators.pattern = function (modelValue, viewValue) {
+          return ctrl.$isEmpty(viewValue) || appUtilsService.urlValidationExpression.test(viewValue) || appUtilsService.localUrlValidationExpression.test(viewValue);
+        };
+      }
+    };
+  }
+})();

components/app-setup/frontend/src/view/wizard/setup-step-1.html

@@ -21,6 +21,7 @@
              name="uaaUrl"
              ng-model="step.userInput.uaaUrl"
              required
+             stratos-url
              placeholder="{{'app-setup.step-1.uaa-url.placeholder' | translate}}"/>
     </div>
     <div class="form-group form-group-large skip-ssl-validation-checkbox" focusable-input>