1 files changed, 72 insertions, 0 deletions
diff --git a/src/app/guards/has-permissions.guard.ts b/src/app/guards/has-permissions.guard.ts
new file mode 100644
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--- /dev/null
+++ b/src/app/guards/has-permissions.guard.ts
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2022. Deutsche Telekom AG
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+import { Inject, Injectable } from '@angular/core';
+import { ActivatedRouteSnapshot, CanActivate, Router, UrlTree } from '@angular/router';
+import { Observable } from 'rxjs';
+import { HttpClient } from '@angular/common/http';
+import { ACL_CONFIG, AclConfig } from '../modules/auth/injection-tokens';
+import { AuthService } from '../services/auth.service';
+import { TranslateService } from '@ngx-translate/core';
+import { map } from 'rxjs/operators';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class HasPermissionsGuard implements CanActivate {
+  constructor(
+    private readonly authService: AuthService,
+    private readonly httpClient: HttpClient,
+    private readonly router: Router,
+    private readonly translateService: TranslateService,
+    @Inject(ACL_CONFIG) readonly acl: AclConfig,
+  ) {}
+
+  canActivate(
+    next: ActivatedRouteSnapshot,
+  ): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
+    return this.authService.loadCachedUserProfile().pipe(
+      map(userProfile => {
+        // filter out the keys (the onap_ roles) that the user does not have
+        const intersectionOfRoles = Object.keys(this.acl).filter(role => userProfile?.roles.includes(role));
+        return this.hasPermissions(next.data.permission, intersectionOfRoles);
+      }));
+  }
+
+  /**
+   * Check if a user has a given permission.
+   * @param permission the permission, as defined in the acl.json
+   * @param roles the roles that the user possesses
+   * @returns true if the user has the needed permission
+   */
+  private hasPermissions(permission: string, roles: string[]) {
+    for (const role of roles) {
+      if (this.acl[role].includes(permission)) {
+        return true;
+      }
+    }
+    this.router.navigate(['/statusPage'], {
+      state: {
+        header: this.translateService.instant('common.noPermissions.noPermissions'),
+        message: this.translateService.instant('common.noPermissions.support'),
+      },
+    });
+    return false;
+  }
+}