Allow applications to bypass network request for OpenID configuration

lib/msal-core/docs/performance.md

@@ -0,0 +1,28 @@
+# Performance
+
+This document will outline techniques your application can use to improve the performance of acquire tokens using MSAL.js.
+
+## Bypass authority metadata resolution
+
+By default, during the process of retrieving a token MSAL.js will make two network requests to retrieve metadata from the authority configured for the request. If you would like to skip those network requests, you can provide the required metadata in the configuration of `UserAgentApplication`.
+
+**Important:** It is your application's responsibility to ensure it is using correct, up-to-date authority metadata. Failure to do so may result in your application not working correctly.
+
+Instructions:
+
+1. Determine the authorize endpoint for your authority. For example, if you are using `https://login.microsoftonline.com/common/`, the authorize endpoint is `https://login.microsoftonline.com/common/oauth2/v2.0/authorize`.
+2. Determine the instance discovery endpoint for your authority. The instance discovery API is located at `https://login.microsoftonline.com/common/discovery/instance?api-version=1.0&authorization_endpoint={authorizeEndpoint}`. If you are using the `common` endpoint, this url is `https://login.microsoftonline.com/common/discovery/instance?api-version=1.0&authorization_endpoint=https://login.microsoftonline.com/common/oauth2/v2.0/authorize`.
+3. Make a request to the instance discovery endpoint.
+4. Parse the `tenant_discovery_endpoint` property from the response.
+5. Make a request to the url for the `tenant_discovery_endpoint` property.
+6. Take the **entire** response and provide the raw JSON string as the `auth.authorityMetadata` property for `UserAgentApplication`. It can also be passed per-request as a part of `AuthenticationParameters`.
+
+Example:
+
+```js
+const msalInstance = new msal.UserAgentApplication({
+    auth: {
+        authorityMetadata: '{"token_endpoint":"https://login.microsoftonline.com/common/oauth2/v2.0/token","token_endpoint_auth_methods_supported":["client_secret_post","private_key_jwt","client_secret_basic"],"jwks_uri":"https://login.microsoftonline.com/common/discovery/v2.0/keys","response_modes_supported":["query","fragment","form_post"],"subject_types_supported":["pairwise"],"id_token_signing_alg_values_supported":["RS256"],"response_types_supported":["code","id_token","code id_token","id_token token"],"scopes_supported":["openid","profile","email","offline_access"],"issuer":"https://login.microsoftonline.com/{tenantid}/v2.0","request_uri_parameter_supported":false,"userinfo_endpoint":"https://graph.microsoft.com/oidc/userinfo","authorization_endpoint":"https://login.microsoftonline.com/common/oauth2/v2.0/authorize","http_logout_supported":true,"frontchannel_logout_supported":true,"end_session_endpoint":"https://login.microsoftonline.com/common/oauth2/v2.0/logout","claims_supported":["sub","iss","cloud_instance_name","cloud_instance_host_name","cloud_graph_host_name","msgraph_host","aud","exp","iat","auth_time","acr","nonce","preferred_username","name","tid","ver","at_hash","c_hash","email"],"tenant_region_scope":null,"cloud_instance_name":"microsoftonline.com","cloud_graph_host_name":"graph.windows.net","msgraph_host":"graph.microsoft.com","rbac_url":"https://pas.windows.net"}'
+    }
+});
+```

lib/msal-core/src/AuthenticationParameters.ts

@@ -25,6 +25,7 @@ export type AuthenticationParameters = {
     forceRefresh?: boolean;
     redirectUri?: string;
     redirectStartPage?: string;
+    authorityMetadata?: string
 };
 
 export function validateClaimsRequest(request: AuthenticationParameters) {

lib/msal-core/src/Configuration.ts

@@ -27,6 +27,7 @@ const NAVIGATE_FRAME_WAIT = 500;
  *  - clientId                    - Client ID of your app registered with our Application registration portal : https://portal.azure.com/#blade/Microsoft_AAD_IAM/ActiveDirectoryMenuBlade/RegisteredAppsPreview in Microsoft Identity Platform
  *  - authority                   - You can configure a specific authority, defaults to " " or "https://login.microsoftonline.com/common"
  *  - validateAuthority           - Used to turn authority validation on/off. When set to true (default), MSAL will compare the application's authority against well-known URLs templates representing well-formed authorities. It is useful when the authority is obtained at run time to prevent MSAL from displaying authentication prompts from malicious pages.
+ *  - authorityMetadata           - OpenID configuration metadata for the configured authority. Must be passed as a JSON string.
  *  - knownAuthorities            - If validateAuthority is set to True, this will be used to set the Trusted Host list. Defaults to empty array
  *  - redirectUri                 - The redirect URI of the application, this should be same as the value in the application registration portal.Defaults to `window.location.href`.
  *  - postLogoutRedirectUri       - Used to redirect the user to this location after logout. Defaults to `window.location.href`.
@@ -37,6 +38,7 @@ export type AuthOptions = {
     clientId: string;
     authority?: string;
     validateAuthority?: boolean;
+    authorityMetadata?: string;
     knownAuthorities?: Array<string>;
     redirectUri?: string | (() => string);
     postLogoutRedirectUri?: string | (() => string);
@@ -117,6 +119,7 @@ const DEFAULT_AUTH_OPTIONS: AuthOptions = {
     clientId: "",
     authority: null,
     validateAuthority: true,
+    authorityMetadata: "",
     knownAuthorities: [],
     redirectUri: () => UrlUtils.getCurrentUrl(),
     postLogoutRedirectUri: () => UrlUtils.getCurrentUrl(),

lib/msal-core/src/UserAgentApplication.ts

@@ -220,6 +220,7 @@ export class UserAgentApplication {
         this.telemetryManager = this.getTelemetryManagerFromConfig(this.config.system.telemetry, this.clientId);
 
         AuthorityFactory.setKnownAuthorities(this.config.auth.validateAuthority, this.config.auth.knownAuthorities);
+        AuthorityFactory.saveMetadataFromConfig(this.config.auth.authority, this.config.auth.authorityMetadata);
 
         // if no authority is passed, set the default: "https://login.microsoftonline.com/common"
         this.authority = this.config.auth.authority || DEFAULT_AUTHORITY;
@@ -483,13 +484,13 @@ export class UserAgentApplication {
      * Helper function to acquireToken
      *
      */
-    private acquireTokenHelper(account: Account, interactionType: InteractionType, isLoginCall: boolean, request: AuthenticationParameters, resolve?: any, reject?: any): void {
+    private async acquireTokenHelper(account: Account, interactionType: InteractionType, isLoginCall: boolean, request: AuthenticationParameters, resolve?: any, reject?: any): Promise<void> {
         // Track the acquireToken progress
         this.cacheStorage.setItem(TemporaryCacheKeys.INTERACTION_STATUS, Constants.inProgress);
         const scope = request.scopes ? request.scopes.join(" ").toLowerCase() : this.clientId.toLowerCase();
 
         let serverAuthenticationRequest: ServerRequestParameters;
-        const acquireTokenAuthority = (request && request.authority) ? AuthorityFactory.CreateInstance(request.authority, this.config.auth.validateAuthority) : this.authorityInstance;
+        const acquireTokenAuthority = (request && request.authority) ? AuthorityFactory.CreateInstance(request.authority, this.config.auth.validateAuthority, request.authorityMetadata) : this.authorityInstance;
 
         let popUpWindow: Window;
 
@@ -514,7 +515,14 @@ export class UserAgentApplication {
             }
         }
 
-        acquireTokenAuthority.resolveEndpointsAsync(this.telemetryManager, request.correlationId).then(async () => {
+        try {
+            if (!acquireTokenAuthority.hasCachedMetadata()) {
+                this.logger.verbose("No cached metadata for authority");
+                await AuthorityFactory.saveMetadataFromNetwork(acquireTokenAuthority, this.telemetryManager, request.correlationId);
+            } else {
+                this.logger.verbose("Cached metadata found for authority");
+            }
+
             // On Fulfillment
             const responseType: string = isLoginCall ? ResponseTypes.id_token : this.getTokenType(account, request.scopes, false);
 
@@ -586,14 +594,14 @@ export class UserAgentApplication {
                     }
                 }
             }
-        }).catch((err) => {
+        } catch (err) {
             this.logger.error(err);
             this.cacheStorage.resetTempCacheItems(request.state);
             this.authErrorHandler(interactionType, ClientAuthError.createEndpointResolutionError(err.toString), buildResponseStateOnly(request.state), reject);
             if (popUpWindow) {
                 popUpWindow.close();
             }
-        });
+        }
     }
 
     /**
@@ -637,7 +645,7 @@ export class UserAgentApplication {
         const apiEvent: ApiEvent = this.telemetryManager.createAndStartApiEvent(request.correlationId, API_EVENT_IDENTIFIER.AcquireTokenSilent);
         const requestSignature = RequestUtils.createRequestSignature(request);
 
-        return new Promise<AuthResponse>((resolve, reject) => {
+        return new Promise<AuthResponse>(async (resolve, reject) => {
 
             // block the request if made from the hidden iframe
             WindowUtils.blockReloadInHiddenIframes();
@@ -671,7 +679,7 @@ export class UserAgentApplication {
 
             // create a serverAuthenticationRequest populating the `queryParameters` to be sent to the Server
             const serverAuthenticationRequest = new ServerRequestParameters(
-                AuthorityFactory.CreateInstance(request.authority, this.config.auth.validateAuthority),
+                AuthorityFactory.CreateInstance(request.authority, this.config.auth.validateAuthority, request.authorityMetadata),
                 this.clientId,
                 responseType,
                 this.getRedirectUri(request.redirectUri),
@@ -737,46 +745,49 @@ export class UserAgentApplication {
 
                 // Cache result can return null if cache is empty. In that case, set authority to default value if no authority is passed to the API.
                 if (!serverAuthenticationRequest.authorityInstance) {
-                    serverAuthenticationRequest.authorityInstance = request.authority ? AuthorityFactory.CreateInstance(request.authority, this.config.auth.validateAuthority) : this.authorityInstance;
+                    serverAuthenticationRequest.authorityInstance = request.authority ? AuthorityFactory.CreateInstance(request.authority, this.config.auth.validateAuthority, request.authorityMetadata) : this.authorityInstance;
                 }
-                this.logger.verbosePii(`Authority instance: ${serverAuthenticationRequest.authority}`);
-
-                // cache miss
 
-                // start http event
-                return serverAuthenticationRequest.authorityInstance.resolveEndpointsAsync(this.telemetryManager, request.correlationId)
-                    .then(() => {
-                        /*
-                         * refresh attempt with iframe
-                         * Already renewing for this scope, callback when we get the token.
-                         */
+                this.logger.verbosePii(`Authority instance: ${serverAuthenticationRequest.authority}`);
+
+                try {
+                    if (!serverAuthenticationRequest.authorityInstance.hasCachedMetadata()) {
+                        this.logger.verbose("No cached metadata for authority");
+                        await AuthorityFactory.saveMetadataFromNetwork(serverAuthenticationRequest.authorityInstance, this.telemetryManager, request.correlationId);
                         this.logger.verbose("Authority has been updated with endpoint discovery response");
+                    } else {
+                        this.logger.verbose("Cached metadata found for authority");
+                    }
 
-                        if (window.activeRenewals[requestSignature]) {
-                            this.logger.verbose("Renew token for scope and authority: " + requestSignature + " is in progress. Registering callback");
-                            // Active renewals contains the state for each renewal.
-                            this.registerCallback(window.activeRenewals[requestSignature], requestSignature, resolve, reject);
-                        }
-                        else {
-                            if (request.scopes && request.scopes.indexOf(this.clientId) > -1 && request.scopes.length === 1) {
-                                /*
-                                 * App uses idToken to send to api endpoints
-                                 * Default scope is tracked as clientId to store this token
-                                 */
-                                this.logger.verbose("Renewing idToken");
-                                this.silentLogin = true;
-                                this.renewIdToken(requestSignature, resolve, reject, account, serverAuthenticationRequest);
-                            } else {
-                                // renew access token
-                                this.logger.verbose("Renewing access token");
-                                this.renewToken(requestSignature, resolve, reject, account, serverAuthenticationRequest);
-                            }
+                    /*
+                     * refresh attempt with iframe
+                     * Already renewing for this scope, callback when we get the token.
+                     */
+                    if (window.activeRenewals[requestSignature]) {
+                        this.logger.verbose("Renew token for scope and authority: " + requestSignature + " is in progress. Registering callback");
+                        // Active renewals contains the state for each renewal.
+                        this.registerCallback(window.activeRenewals[requestSignature], requestSignature, resolve, reject);
+                    }
+                    else {
+                        if (request.scopes && request.scopes.indexOf(this.clientId) > -1 && request.scopes.length === 1) {
+                            /*
+                             * App uses idToken to send to api endpoints
+                             * Default scope is tracked as clientId to store this token
+                             */
+                            this.logger.verbose("Renewing idToken");
+                            this.silentLogin = true;
+                            this.renewIdToken(requestSignature, resolve, reject, account, serverAuthenticationRequest);
+                        } else {
+                            // renew access token
+                            this.logger.verbose("Renewing accesstoken");
+                            this.renewToken(requestSignature, resolve, reject, account, serverAuthenticationRequest);
                         }
-                    }).catch((err) => {
-                        this.logger.warning("Could not resolve endpoints");
-                        reject(ClientAuthError.createEndpointResolutionError(err.toString()));
-                        return null;
-                    });
+                    }
+                } catch (err) {
+                    this.logger.error(err);
+                    reject(ClientAuthError.createEndpointResolutionError(err.toString()));
+                    return null;
+                }
             }
         })
             .then(res => {
@@ -966,27 +977,43 @@ export class UserAgentApplication {
      * Default behaviour is to redirect the user to `window.location.href`.
      */
     logout(correlationId?: string): void {
-        // TODO this new correlation id passed in, is not appended to logout request, should add
+        this.logoutAsync(correlationId);
+    }
+
+    /**
+     * Async version of logout(). Use to log out the current user.
+     * @param correlationId Request correlationId
+     */
+    private async logoutAsync(correlationId?: string): Promise<void> {
         const requestCorrelationId = correlationId || CryptoUtils.createNewGuid();
         const apiEvent = this.telemetryManager.createAndStartApiEvent(requestCorrelationId, API_EVENT_IDENTIFIER.Logout);
 
         this.clearCache();
         this.account = null;
-        let logout = "";
-        if (this.getPostLogoutRedirectUri()) {
-            logout = "post_logout_redirect_uri=" + encodeURIComponent(this.getPostLogoutRedirectUri());
-        }
-        this.authorityInstance.resolveEndpointsAsync(this.telemetryManager, requestCorrelationId)
-            .then(authority => {
-                const urlNavigate = authority.EndSessionEndpoint
-                    ? `${authority.EndSessionEndpoint}?${logout}`
-                    : `${this.authority}oauth2/v2.0/logout?${logout}`;
-                this.telemetryManager.stopAndFlushApiEvent(requestCorrelationId, apiEvent, true);
-                this.navigateWindow(urlNavigate);
-            })
-            .catch((error: AuthError) => {
-                this.telemetryManager.stopAndFlushApiEvent(requestCorrelationId, apiEvent, false, error.errorCode);
-            });
+
+        try {
+            if (!this.authorityInstance.hasCachedMetadata()) {
+                this.logger.verbose("No cached metadata for authority");
+                await AuthorityFactory.saveMetadataFromNetwork(this.authorityInstance, this.telemetryManager, correlationId);
+            } else {
+                this.logger.verbose("Cached metadata found for authority");
+            }
+
+            const correlationIdParam = `client-request-id=${requestCorrelationId}`;
+
+            const postLogoutQueryParam = this.getPostLogoutRedirectUri()
+                ? `&post_logout_redirect_uri=${encodeURIComponent(this.getPostLogoutRedirectUri())}`
+                : "";
+
+            const urlNavigate = this.authorityInstance.EndSessionEndpoint
+                ? `${this.authorityInstance.EndSessionEndpoint}?${correlationIdParam}${postLogoutQueryParam}`
+                : `${this.authority}oauth2/v2.0/logout?${correlationIdParam}${postLogoutQueryParam}`;
+
+            this.telemetryManager.stopAndFlushApiEvent(requestCorrelationId, apiEvent, true);
+            this.navigateWindow(urlNavigate);
+        } catch (error) {
+            this.telemetryManager.stopAndFlushApiEvent(requestCorrelationId, apiEvent, false, error.errorCode);
+        }
     }
 
     /**

lib/msal-core/src/authority/AadAuthority.ts

@@ -8,6 +8,7 @@ import { XhrClient, XhrResponse } from "../XHRClient";
 import { AADTrustedHostList } from "../utils/Constants";
 import HttpEvent from "../telemetry/HttpEvent";
 import TelemetryManager from "../telemetry/TelemetryManager";
+import { ITenantDiscoveryResponse } from "./ITenantDiscoveryResponse";
 
 /**
  * @hidden
@@ -19,8 +20,8 @@ export class AadAuthority extends Authority {
         return `${AadAuthority.AadInstanceDiscoveryEndpoint}?api-version=1.0&authorization_endpoint=${this.CanonicalAuthority}oauth2/v2.0/authorize`;
     }
 
-    public constructor(authority: string, validateAuthority: boolean) {
-        super(authority, validateAuthority);
+    public constructor(authority: string, validateAuthority: boolean, authorityMetadata?: ITenantDiscoveryResponse) {
+        super(authority, validateAuthority, authorityMetadata);
     }
 
     public get AuthorityType(): AuthorityType {