task(auth): Expose more detailed session status info

Because:
- Just checking the state returned by `/session/status` often isn't enough
- We need more details about the session status

This Commit:
- Updates /session/status adn that exposes details about the session status state.

Author: dschom

packages/fxa-auth-server/lib/routes/session.js

@@ -19,6 +19,7 @@ const { recordSecurityEvent } = require('./utils/security-event');
 const { getOptionalCmsEmailConfig } = require('./utils/account');
 const { Container } = require('typedi');
 const { RelyingPartyConfigurationManager } = require('@fxa/shared/cms');
+const authMethods = require('../authMethods');
 
 module.exports = function (
   log,
@@ -275,15 +276,56 @@ module.exports = function (
           schema: isA.object({
             state: isA.string().required(),
             uid: isA.string().regex(HEX_STRING).required(),
+            details: isA.object({
+              accountEmailVerified: isA.boolean(),
+              sessionVerificationMethod: isA.string().allow(null),
+              sessionVerificationSuccessful: isA.boolean(),
+              sessionVerificationMeetsMinimumAAL: isA.boolean(),
+            }),
           }),
         },
       },
       handler: async function (request) {
         log.begin('Session.status', request);
         const sessionToken = request.auth.credentials;
+        const account = await db.account(sessionToken.uid);
+
+        // Make sure the account still exists
+        if (!account) {
+          throw error.unknownAccount();
+        }
+
+        // Check account assurance level
+        const accountAmr = await authMethods.availableAuthenticationMethods(
+          db,
+          account
+        );
+        const accountAal = authMethods.maximumAssuranceLevel(accountAmr);
+        const sessionAal = sessionToken.authenticatorAssuranceLevel;
+
+        // Build response
+        const accountEmailVerified =
+          account.emails?.primaryEmail?.isVerified || false;
+
+        const sessionVerificationMethod = sessionToken.verificationMethod;
+
+        // See verified-session-token auth strategy
+        const sessionVerificationSuccessful =
+          sessionToken.tokenVerificationId == null &&
+          sessionToken.tokenVerified !== false;
+
+        // Account Assurance Level
+        const sessionVerificationMeetsMinimumAAL = sessionAal >= accountAal;
+
         return {
           state: sessionToken.state,
           uid: sessionToken.uid,
+          details: {
+            accountEmailVerified,
+            sessionVerificationMethod,
+            sessionVerificationSuccessful,
+            sessionVerificationMeetsMinimumAAL,
+          },
         };
       },
     },

packages/fxa-auth-server/test/local/routes/auth-schemes/verified-session-token.js

@@ -8,9 +8,6 @@ const AppError = require('../../../../lib/error');
 const {
   strategy,
 } = require('../../../../lib/routes/auth-schemes/verified-session-token');
-const authMethods = require('../../../../lib/authMethods');
-
-const HAWK_HEADER = 'Hawk id="123", ts="123", nonce="123", mac="123"';
 
 describe('lib/routes/auth-schemes/verified-session-token', () => {
   let config;
@@ -21,10 +18,6 @@ describe('lib/routes/auth-schemes/verified-session-token', () => {
   let request;
   let getCredentialsFunc;
 
-  before(() => {
-    sinon.stub(authMethods, 'availableAuthenticationMethods');
-  });
-
   beforeEach(() => {
     // Default valid state. This state should pass email verified check, session token verified check,
     // and account assurance level check.
@@ -53,12 +46,10 @@ describe('lib/routes/auth-schemes/verified-session-token', () => {
       authenticatorAssuranceLevel: 1,
     };
 
-    authMethods.availableAuthenticationMethods = sinon.fake.resolves(
-      new Set(['pwd', 'email'])
-    );
-
     request = {
-      headers: { authorization: HAWK_HEADER },
+      headers: {
+        authorization: 'Hawk id="123", ts="123", nonce="123", mac="123"',
+      },
       auth: { mode: 'required' },
       route: { path: '/foo/{id}' },
     };
@@ -209,9 +200,10 @@ describe('lib/routes/auth-schemes/verified-session-token', () => {
 
   it('fails when AAL mismatch', async () => {
     // Force account AAL=2 by returning otp along with pwd/email
-    authMethods.availableAuthenticationMethods = sinon.fake.resolves(
-      new Set(['pwd', 'email', 'otp'])
-    );
+    db.totpToken = sinon.fake.resolves({
+      verified: true,
+      enabled: true,
+    });
 
     const authStrategy = strategy(getCredentialsFunc, db, config, statsd)();
     try {
@@ -231,9 +223,10 @@ describe('lib/routes/auth-schemes/verified-session-token', () => {
 
   it('skips AAL check when configured', async () => {
     // Force account AAL=2 by returning otp along with pwd/email
-    authMethods.availableAuthenticationMethods = sinon.fake.resolves(
-      new Set(['pwd', 'email', 'otp'])
-    );
+    db.totpToken = sinon.fake.resolves({
+      enabled: true,
+      verified: true,
+    });
 
     // Skip AAL check for path
     config.authStrategies.verifiedSessionToken.skipAalCheckForRoutes = '/foo.*';