ui: Change Run Job availability based on ACLs (#5944)

This builds on API changes in #6017 and #6021 to conditionally turn off the
“Run Job” button based on the current token’s capabilities, or the capabilities
of the anonymous policy if no token is present.

If you try to visit the job-run route directly, it redirects to the job list.

ui/app/abilities/job.js

@@ -0,0 +1,79 @@
+import { Ability } from 'ember-can';
+import { inject as service } from '@ember/service';
+import { computed, get } from '@ember/object';
+import { equal, or } from '@ember/object/computed';
+
+export default Ability.extend({
+  system: service(),
+  token: service(),
+
+  canRun: or('selfTokenIsManagement', 'policiesSupportRunning'),
+
+  selfTokenIsManagement: equal('token.selfToken.type', 'management'),
+
+  activeNamespace: computed('system.activeNamespace.name', function() {
+    return this.get('system.activeNamespace.name') || 'default';
+  }),
+
+  rulesForActiveNamespace: computed('activeNamespace', 'token.selfTokenPolicies.[]', function() {
+    let activeNamespace = this.activeNamespace;
+
+    return (this.get('token.selfTokenPolicies') || []).toArray().reduce((rules, policy) => {
+      let policyNamespaces = get(policy, 'rulesJSON.Namespaces') || [];
+
+      let matchingNamespace = this._findMatchingNamespace(policyNamespaces, activeNamespace);
+
+      if (matchingNamespace) {
+        rules.push(policyNamespaces.find(namespace => namespace.Name === matchingNamespace));
+      }
+
+      return rules;
+    }, []);
+  }),
+
+  policiesSupportRunning: computed('rulesForActiveNamespace.@each.capabilities', function() {
+    return this.rulesForActiveNamespace.some(rules => {
+      let capabilities = get(rules, 'Capabilities') || [];
+      return capabilities.includes('submit-job');
+    });
+  }),
+
+  // Chooses the closest namespace as described at the bottom here:
+  // https://www.nomadproject.io/guides/security/acl.html#namespace-rules
+  _findMatchingNamespace(policyNamespaces, activeNamespace) {
+    let namespaceNames = policyNamespaces.mapBy('Name');
+
+    if (namespaceNames.includes(activeNamespace)) {
+      return activeNamespace;
+    }
+
+    let globNamespaceNames = namespaceNames.filter(namespaceName => namespaceName.includes('*'));
+
+    let matchingNamespaceName = globNamespaceNames.reduce(
+      (mostMatching, namespaceName) => {
+        // Convert * wildcards to .* for regex matching
+        let namespaceNameRegExp = new RegExp(namespaceName.replace(/\*/g, '.*'));
+        let characterDifference = activeNamespace.length - namespaceName.length;
+
+        if (
+          characterDifference < mostMatching.mostMatchingCharacterDifference &&
+          activeNamespace.match(namespaceNameRegExp)
+        ) {
+          return {
+            mostMatchingNamespaceName: namespaceName,
+            mostMatchingCharacterDifference: characterDifference,
+          };
+        } else {
+          return mostMatching;
+        }
+      },
+      { mostMatchingNamespaceName: null, mostMatchingCharacterDifference: Number.MAX_SAFE_INTEGER }
+    ).mostMatchingNamespaceName;
+
+    if (matchingNamespaceName) {
+      return matchingNamespaceName;
+    } else if (namespaceNames.includes('default')) {
+      return 'default';
+    }
+  },
+});

ui/app/models/policy.js

@@ -5,4 +5,5 @@ export default Model.extend({
   name: attr('string'),
   description: attr('string'),
   rules: attr('string'),
+  rulesJSON: attr(),
 });

ui/app/routes/application.js

@@ -8,6 +8,7 @@ export default Route.extend({
   config: service(),
   system: service(),
   store: service(),
+  token: service(),
 
   queryParams: {
     region: {
@@ -22,28 +23,34 @@ export default Route.extend({
   },
 
   beforeModel(transition) {
-    return RSVP.all([this.get('system.regions'), this.get('system.defaultRegion')]).then(
-      promises => {
-        if (!this.get('system.shouldShowRegions')) return promises;
-
-        const queryParam = transition.to.queryParams.region;
-        const defaultRegion = this.get('system.defaultRegion.region');
-        const currentRegion = this.get('system.activeRegion') || defaultRegion;
-
-        // Only reset the store if the region actually changed
-        if (
-          (queryParam && queryParam !== currentRegion) ||
-          (!queryParam && currentRegion !== defaultRegion)
-        ) {
-          this.system.reset();
-          this.store.unloadAll();
-        }
-
-        this.set('system.activeRegion', queryParam || defaultRegion);
-
-        return promises;
+    const fetchSelfTokenAndPolicies = this.get('token.fetchSelfTokenAndPolicies')
+      .perform()
+      .catch();
+
+    return RSVP.all([
+      this.get('system.regions'),
+      this.get('system.defaultRegion'),
+      fetchSelfTokenAndPolicies,
+    ]).then(promises => {
+      if (!this.get('system.shouldShowRegions')) return promises;
+
+      const queryParam = transition.to.queryParams.region;
+      const defaultRegion = this.get('system.defaultRegion.region');
+      const currentRegion = this.get('system.activeRegion') || defaultRegion;
+
+      // Only reset the store if the region actually changed
+      if (
+        (queryParam && queryParam !== currentRegion) ||
+        (!queryParam && currentRegion !== defaultRegion)
+      ) {
+        this.system.reset();
+        this.store.unloadAll();
       }
-    );
+
+      this.set('system.activeRegion', queryParam || defaultRegion);
+
+      return promises;
+    });
   },
 
   // Model is being used as a way to transfer the provided region

ui/app/routes/jobs/run.js

@@ -2,6 +2,7 @@ import Route from '@ember/routing/route';
 import { inject as service } from '@ember/service';
 
 export default Route.extend({
+  can: service(),
   store: service(),
   system: service(),
 
@@ -12,6 +13,12 @@ export default Route.extend({
     },
   ],
 
+  beforeModel() {
+    if (this.can.cannot('run job')) {
+      this.transitionTo('jobs');
+    }
+  },
+
   model() {
     return this.store.createRecord('job', {
       namespace: this.get('system.activeNamespace'),

ui/app/services/token.js

@@ -1,10 +1,14 @@
 import Service, { inject as service } from '@ember/service';
 import { computed } from '@ember/object';
+import { alias } from '@ember/object/computed';
+import { getOwner } from '@ember/application';
 import { assign } from '@ember/polyfills';
+import { task } from 'ember-concurrency';
 import queryString from 'query-string';
 import fetch from 'nomad-ui/utils/fetch';
 
 export default Service.extend({
+  store: service(),
   system: service(),
 
   secret: computed({
@@ -22,6 +26,37 @@ export default Service.extend({
     },
   }),
 
+  fetchSelfToken: task(function*() {
+    const TokenAdapter = getOwner(this).lookup('adapter:token');
+    try {
+      return yield TokenAdapter.findSelf();
+    } catch (e) {
+      return null;
+    }
+  }),
+
+  selfToken: alias('fetchSelfToken.lastSuccessful.value'),
+
+  fetchSelfTokenPolicies: task(function*() {
+    try {
+      if (this.selfToken) {
+        return yield this.selfToken.get('policies');
+      } else {
+        let policy = yield this.store.findRecord('policy', 'anonymous');
+        return [policy];
+      }
+    } catch (e) {
+      return [];
+    }
+  }),
+
+  selfTokenPolicies: alias('fetchSelfTokenPolicies.lastSuccessful.value'),
+
+  fetchSelfTokenAndPolicies: task(function*() {
+    yield this.fetchSelfToken.perform();
+    yield this.fetchSelfTokenPolicies.perform();
+  }),
+
   // All non Ember Data requests should go through authorizedRequest.
   // However, the request that gets regions falls into that category.
   // This authorizedRawRequest is necessary in order to fetch data

ui/app/styles/components/tooltip.scss

@@ -46,6 +46,10 @@
   transition: top 0.1s ease-in-out;
 }
 
+.tooltip.is-right-aligned::after {
+  transform: translateX(-75%);
+}
+
 .tooltip:hover::after,
 .tooltip.always-active::after {
   opacity: 1;

ui/app/templates/jobs/index.hbs

@@ -15,7 +15,11 @@
       </div>
       {{#if (media "isMobile")}}
         <div class="toolbar-item is-right-aligned">
-          {{#link-to "jobs.run" data-test-run-job class="button is-primary"}}Run Job{{/link-to}}
+          {{#if (can "run job")}}
+            {{#link-to "jobs.run" data-test-run-job class="button is-primary"}}Run Job{{/link-to}}
+          {{else}}
+            <button data-test-run-job class="button tooltip is-right-aligned" aria-label="You don’t have permission to run jobs" disabled>Run Job</button>
+          {{/if}}
         </div>
       {{/if}}
       <div class="toolbar-item is-right-aligned is-mobile-full-width">
@@ -48,7 +52,11 @@
       </div>
       {{#if (not (media "isMobile"))}}
         <div class="toolbar-item is-right-aligned">
-          {{#link-to "jobs.run" data-test-run-job class="button is-primary"}}Run Job{{/link-to}}
+          {{#if (can "run job")}}
+            {{#link-to "jobs.run" data-test-run-job class="button is-primary"}}Run Job{{/link-to}}
+          {{else}}
+            <button data-test-run-job class="button tooltip is-right-aligned" aria-label="You don’t have permission to run jobs" disabled>Run Job</button>
+          {{/if}}
         </div>
       {{/if}}
     </div>

ui/mirage/config.js

@@ -278,6 +278,14 @@ export default function() {
     const secret = req.requestHeaders['X-Nomad-Token'];
     const tokenForSecret = tokens.findBy({ secretId: secret });
 
+    if (req.params.id === 'anonymous') {
+      if (policy) {
+        return this.serialize(policy);
+      } else {
+        return new Response(404, {}, null);
+      }
+    }
+
     // Return the policy only if the token that matches the request header
     // includes the policy or if the token that matches the request header
     // is of type management

ui/package.json

@@ -49,6 +49,7 @@
     "d3-transition": "^1.1.0",
     "ember-ajax": "^5.0.0",
     "ember-auto-import": "^1.2.21",
+    "ember-can": "^2.0.0",
     "ember-cli": "~3.12.0",
     "ember-cli-babel": "^7.7.3",
     "ember-cli-clipboard": "^0.13.0",

ui/tests/acceptance/allocation-detail-test.js

@@ -219,7 +219,9 @@ module('Acceptance | allocation detail', function(hooks) {
     await Allocation.visit({ id: 'not-a-real-allocation' });
 
     assert.equal(
-      server.pretender.handledRequests.findBy('status', 404).url,
+      server.pretender.handledRequests
+        .filter(request => !request.url.includes('policy'))
+        .findBy('status', 404).url,
       '/v1/allocation/not-a-real-allocation',
       'A request to the nonexistent allocation is made'
     );

ui/tests/acceptance/client-detail-test.js

@@ -323,7 +323,9 @@ module('Acceptance | client detail', function(hooks) {
     await ClientDetail.visit({ id: 'not-a-real-node' });
 
     assert.equal(
-      server.pretender.handledRequests.findBy('status', 404).url,
+      server.pretender.handledRequests
+        .filter(request => !request.url.includes('policy'))
+        .findBy('status', 404).url,
       '/v1/node/not-a-real-node',
       'A request to the nonexistent node is made'
     );

ui/tests/acceptance/job-allocations-test.js

@@ -105,7 +105,9 @@ module('Acceptance | job allocations', function(hooks) {
     await Allocations.visit({ id: 'not-a-real-job' });
 
     assert.equal(
-      server.pretender.handledRequests.findBy('status', 404).url,
+      server.pretender.handledRequests
+        .filter(request => !request.url.includes('policy'))
+        .findBy('status', 404).url,
       '/v1/job/not-a-real-job',
       'A request to the nonexistent job is made'
     );

ui/tests/acceptance/job-definition-test.js

@@ -79,7 +79,9 @@ module('Acceptance | job definition', function(hooks) {
     await Definition.visit({ id: 'not-a-real-job' });
 
     assert.equal(
-      server.pretender.handledRequests.findBy('status', 404).url,
+      server.pretender.handledRequests
+        .filter(request => !request.url.includes('policy'))
+        .findBy('status', 404).url,
       '/v1/job/not-a-real-job',
       'A request to the nonexistent job is made'
     );

ui/tests/acceptance/job-deployments-test.js

@@ -220,7 +220,9 @@ module('Acceptance | job deployments', function(hooks) {
     await Deployments.visit({ id: 'not-a-real-job' });
 
     assert.equal(
-      server.pretender.handledRequests.findBy('status', 404).url,
+      server.pretender.handledRequests
+        .filter(request => !request.url.includes('policy'))
+        .findBy('status', 404).url,
       '/v1/job/not-a-real-job',
       'A request to the nonexistent job is made'
     );

ui/tests/acceptance/job-detail-test.js

@@ -47,7 +47,9 @@ moduleForJob(
       await JobDetail.visit({ id: 'not-a-real-job' });
 
       assert.equal(
-        server.pretender.handledRequests.findBy('status', 404).url,
+        server.pretender.handledRequests
+          .filter(request => !request.url.includes('policy'))
+          .findBy('status', 404).url,
         '/v1/job/not-a-real-job',
         'A request to the nonexistent job is made'
       );

ui/tests/acceptance/job-evaluations-test.js

@@ -54,7 +54,9 @@ module('Acceptance | job evaluations', function(hooks) {
     await Evaluations.visit({ id: 'not-a-real-job' });
 
     assert.equal(
-      server.pretender.handledRequests.findBy('status', 404).url,
+      server.pretender.handledRequests
+        .filter(request => !request.url.includes('policy'))
+        .findBy('status', 404).url,
       '/v1/job/not-a-real-job',
       'A request to the nonexistent job is made'
     );

ui/tests/acceptance/job-run-test.js

@@ -9,6 +9,8 @@ import JobRun from 'nomad-ui/tests/pages/jobs/run';
 const newJobName = 'new-job';
 const newJobTaskGroupName = 'redis';
 
+let managementToken, clientToken;
+
 const jsonJob = overrides => {
   return JSON.stringify(
     assign(
@@ -45,6 +47,11 @@ module('Acceptance | job run', function(hooks) {
   hooks.beforeEach(function() {
     // Required for placing allocations (a result of creating jobs)
     server.create('node');
+
+    managementToken = server.create('token');
+    clientToken = server.create('token');
+
+    window.localStorage.nomadTokenSecret = managementToken.secretId;
   });
 
   test('visiting /jobs/run', async function(assert) {
@@ -86,4 +93,11 @@ module('Acceptance | job run', function(hooks) {
       `Redirected to the job overview page for ${newJobName} and switched the namespace to ${newNamespace}`
     );
   });
+
+  test('when the user doesn’t have permission to run a job, redirects to the job overview page', async function(assert) {
+    window.localStorage.nomadTokenSecret = clientToken.secretId;
+
+    await JobRun.visit();
+    assert.equal(currentURL(), '/jobs');
+  });
 });