ba-web-framework/src/oauth/OAuthApp.ts
Alan Bridgeman 90168f0858
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Changes so that I don't have to change the OAuthApp class if I change the custom claims next time (the types should just work automatically)
2026-01-29 11:57:17 -06:00

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15 KiB
TypeScript

import type { Application } from 'express';
import { Scopes } from '@BridgemanAccessible/ba-auth';
import Client from '@BridgemanAccessible/ba-auth/client';
import type { OnAuthCallback } from '@BridgemanAccessible/ba-auth/client';
import { logMessage, LogLevel } from '@BridgemanAccessible/ba-logging';
import { App } from '../App.js';
import { Initializer } from '../Initializer.js';
import { getValueFromEnvironmentVariable } from '../utils/env-vars.js';
import type { BridgemanAccessibleAppClaims } from './types/BridgemanAccessibleAppClaims.js';
import type { AppSubscriptionTier } from './types/AppSubscriptionTier.js';
import type { Addon } from './types/addons/Addon.js';
import type { Webhook } from './types/Webhook.js';
interface BasicOAuthAppOptions {
// ------------------
// Basic app metadata
// ------------------
/** The base URL of the app */
baseAppUrl?: URL,
/** The abbreviation of the app */
//appAbbrv?: string,
/** The (potentially localized) name of the app */
appName?: string | {
/** Localized versions of the app name */
[language: string]: string
},
// -----------------------------------------------------------
// Necessary interconnected details (contacts, scopes, etc...)
// -----------------------------------------------------------
/** The email addresses of the contacts for the app */
contacts?: string[],
/** The "available" scopes (scopes an app token COULD ask for - token scopes would have to ask for this or a subset of this list) */
scopes?: Scopes[],
// -----------------------------------------------------
// Optional Mechanical Details (how the OAuth app works)
// -----------------------------------------------------
/** The type of vault to use for the keystore */
vault_type?: "azure" | "hashicorp" | "file",
/** The default method for authentication */
auth_default_method?: "query" | "form_post" | "PAR",
/** Whether to use JWT as the default authentication method */
auth_default_use_JWT?: boolean,
/** The default response mode for authentication */
auth_default_response_mode?: 'query' | 'fragment' | 'form_post'
// -----------------------------------------------------
// For already registered apps (to stop re-registration)
// -----------------------------------------------------
/** The client secret for the app (if this IS set registration WON'T be done. Because re-registering isn't supported) */
client_secret?: string
// ----------------------------------
// URL stuff (policies, logo, etc...)
// ----------------------------------
/** The URL of the app's logo */
logo_url?: URL,
/** The URL of the app's Terms of Service */
tos_url?: URL,
/** The URL of the app's Privacy Policy */
policy_url?: URL,
// ------------------------------
// Webhooks (async notifications)
// ------------------------------
/** The webhooks supported by the app */
//webhooks?: Webhook[],
// ------------------------------------------
// Purchasable Stuff (Subscriptions + Addons)
// ------------------------------------------
/** If a subscription is required */
//subscriptionRequired?: boolean,
/** The subscription tiers available for the app */
//subscriptionTiers?: AppSubscriptionTier[],
/** Addons offered by the app */
//addons?: Addon[],
};
type OAuthAppOptions<T extends BridgemanAccessibleAppClaims> = T & BasicOAuthAppOptions;
export class OAuthApp<TCustomClaims extends BridgemanAccessibleAppClaims> extends App {
private onAuth: OnAuthCallback;
private saveSecret: (secret: string) => void | Promise<void>;
private options: OAuthAppOptions<TCustomClaims>;
/*private baseAppUrl?: URL;
private appAbbrv?: string;
private appName?: string | { [language: string]: string };
private contacts?: string[];
private scopes?: Scopes[];
private vault_type?: "azure" | "hashicorp" | "file";
private auth_default_method?: "query" | "form_post" | "PAR";
private auth_default_use_JWT?: boolean;
private auth_default_response_mode?: 'query' | 'fragment' | 'form_post';
private client_secret?: string;
private logo_url?: URL;
private tos_url?: URL;
private policy_url?: URL;
private webhooks?: Webhook[];
private subscriptionRequired?: boolean;
private subscriptionTiers?: AppSubscriptionTier[];
private addons?: Addon[];*/
private client: Client<TCustomClaims>;
/**
* Create a new OAuth app
*
* This is a more specialized version of the `App` class that is designed to work with the Bridgeman Accessible OAuth system.
* The only required parameters are the `onAuth` and `saveSecret` callbacks which are called when a user logs in.
* And when the client secret is generated (and is to be saved) respectively.
* The `options` parameter allows for tweaking the OAuth details for the app.
*
* Note, the following table of environment variables that are used to set the OAuth details if they aren't provided in the `options` parameter:
*
* | Environment Variable | Is Required | Description |
* | -------------------- | ------------------------------------------------------- | ---------------------------------------------------------------------------- |
* | BASE_APP_URL | Required if `options.baseAppUrl` isn't provided | The base URL of the client (app) |
* | APP_ABBRV | Required if `options.appAbbrv` isn't provided | The abbreviation of the client (app) |
* | APP_NAME | Required if `options.appName` isn't provided | The name of the client (only a single non-localized name is supported) |
* | CONTACT_EMAIL | Required if `options.contacts` isn't provided | A comma-separated list of email addresses to list as contacts for the client |
* | SCOPES | Required if `options.scopes` isn't provided | A comma-separated list of scopes available to the client |
* | VAULT_TYPE | Required if in production (`NODE_ENV` is `production`) | The type of vault to use for the keystore (one of azure, hashicorp, or file) |
* | APP_SECRET | Optional (Determines if app should register or not) | The client secret for the app (if this IS set registration WON'T be done) |
* | LOGO_URL | Optional (used if `options.logo_url` isn't specified) | The URL of the client's (app's) logo |
* | TOS_URL | Optional (used if `options.tos_url` isn't specified) | The URL of the client's terms of service |
* | POLICY_URL | Optional (used if `options.policy_url` isn't specified) | The URL of the client's privacy policy |
*
* @param onAuth The callback to call when a user logs in
* @param saveSecret The callback to call to save the secret
* @param options The options for the OAuth app
* @param options.baseAppUrl The base URL of the app
* @param options.appAbbrv The abbreviation of the app (used for user properties associated with the app)
* @param options.appName The name of the app
* @param options.contacts The email addresses of the contacts for the app
* @param options.scopes The scopes an app token COULD ask for (token scopes would have to ask for this or a subset of this list)
* @param options.vault_type The type of vault to use for the keystore
* @param options.auth_default_method The default method for authentication
* @param options.auth_default_use_JWT Whether to use JWT as the default authentication method
* @param options.auth_default_response_mode The default response mode for authentication
* @param options.client_secret The client secret for the app (if this IS set registration WON'T be done. Because re-registering isn't supported)
* @param options.logo_url The URL of the app's logo
* @param options.tos_url The URL of the app's terms of service
* @param options.policy_url The URL of the app's privacy policy
* @param options.webhooks The webhooks supported by the app
* @param options.subscriptionRequired If a subscription is required
* @param options.subscriptionTiers The subscription tiers available for the app
* @param options.addons Addons offered by the app
*/
constructor(
onAuth: OnAuthCallback,
saveSecret: (secret: string) => void | Promise<void>,
options?: OAuthAppOptions<TCustomClaims>
) {
super();
this.onAuth = onAuth;
this.saveSecret = saveSecret;
this.options = options ?? {} as OAuthAppOptions<TCustomClaims>;
/*if(typeof options !== 'undefined') {
this.baseAppUrl = options.baseAppUrl;
this.appAbbrv = options.appAbbrv;
this.appName = options.appName;
this.contacts = options.contacts;
this.scopes = options.scopes;
this.vault_type = options.vault_type;
this.auth_default_method = options.auth_default_method;
this.auth_default_use_JWT = options.auth_default_use_JWT;
this.auth_default_response_mode = options.auth_default_response_mode;
this.client_secret = options.client_secret;
this.logo_url = options.logo_url;
this.tos_url = options.tos_url;
this.policy_url = options.policy_url;
this.webhooks = options.webhooks;
this.subscriptionRequired = options.subscriptionRequired;
this.subscriptionTiers = options.subscriptionTiers;
this.addons = options.addons;
}*/
}
/** Returns the OAuthApp's Client instance (which is useful for managing keys, creating resource request, etc...) */
getClient(): Client<TCustomClaims> {
return this.client;
}
/**
* Setup the OAuth client
*
* This is done here because we need the client to be serving/listening for request in order for the auth library stuff to work properly
* (mostly, the server needs to be able to get the client's keys which the client needs to be able to serve)
*
* @param app The app to setup the OAuth client for
*/
private async setupOAuthClient(app: App) {
// If the base URL of the app isn't provided, get it from the environment variable
let baseAppUrl = this.options.baseAppUrl;
if(typeof baseAppUrl === 'undefined') {
baseAppUrl = new URL(getValueFromEnvironmentVariable('BASE_APP_URL', { description: 'app\'s base URL', blank_allowed: false }));
}
// The app abbreviation (used for user properties associated with the app)
let appAbbrv = this.options.client_abbreviation;
if(typeof appAbbrv === 'undefined') {
appAbbrv = getValueFromEnvironmentVariable('APP_ABBRV', { description: 'app abbreviation', blank_allowed: false });
}
logMessage(`Attempting to create/register the app:\n\tApp Base URL: ${baseAppUrl}\n\tApp Abbreviation: ${appAbbrv}\n\tApp Name: ${typeof this.options.appName === 'undefined' ? 'uses APP_NAME environment variable (' + process.env.APP_NAME + ')' : this.options.appName}\n\tScopes: ${typeof this.options.scopes === 'undefined' ? 'uses SCOPES environment variable (' + process.env.SCOPES + ')' : this.options.scopes.join(', ')}`, LogLevel.DEBUG);
// Because we need this for registration to work properly. It make sense to put it here
app.getInitializer()
.getRouter()
.addOutsideFrameworkRoute('/.well-known/jwks.json');
this.client = await Client.setup<TCustomClaims>(
app.getExpressApp(),
baseAppUrl,
this.onAuth,
this.saveSecret,
{
client_abbreviation: appAbbrv,
subscription_required: this.options.subscriptionRequired ?? false,
subscription_tiers: this.options.subscriptionTiers,
addons: this.options.addons,
webhooks: this.options.webhooks
} as TCustomClaims,
this.options.appName,
this.options.scopes,
{
contacts: this.options.contacts,
logo_url: this.options.logo_url,
tos_url: this.options.tos_url,
policy_url: this.options.policy_url,
vault_type: this.options.vault_type,
auth_default_method: this.options.auth_default_method,
auth_default_use_JWT: this.options.auth_default_use_JWT,
auth_default_response_mode: this.options.auth_default_response_mode,
client_secret: this.options.client_secret
}
);
this.client.getSetupRoutes().forEach((route) => {
logMessage(`Adding outside framework route: ${route}`, LogLevel.DEBUG);
app.getInitializer().getRouter().addOutsideFrameworkRoute(route);
});
}
/**
* The wrapper method around the `onStart` callback that differentiates the `OAuthApp` from the `App` class.
* That is, this (the `OAuthApp` class) sets up the OAuth client before calling the client's `onStart` callback.
* As opposed to the `App` class which just calls the `onStart` callback.
*
* It's done this way so that it's almost entirely transparent the difference between apps that have OAuth and those that don't.
*
* @param app The Express app object (that is now listening)
*/
private async onStart(app: App, callback?: (app: OAuthApp<TCustomClaims>) => void | Promise<void>) {
try {
// Setup the OAuth client.
// This is done here because we need the client to be serving/listening for requests for the auth library stuff to work
// (mostly because the server needs to be able to get the client's keys which it needs to be able to serve)
await this.setupOAuthClient(app);
if(typeof callback !== 'undefined') {
await callback(this);
}
}
catch(err) {
logMessage('Error setting up the BA User Auth', LogLevel.ERROR);
logMessage('---------------------------------', LogLevel.ERROR);
logMessage(JSON.stringify(err), LogLevel.ERROR);
}
}
/**
* The main entry point for the app
*
* This largely just wraps the `run` method from the parent class (`App`).
* However, instead of invoking the provided callback immediately when the client starts.
* This initializes the app as an OAuth app first and then calls the callback.
* This lets the app just worry about the `onAuth` callback (what happens when a user logs in) and `saveSecret` callback (that saves the generated client secret, if applicable)
* And doesn't have to worry about the OAuth details to make this work.
* Though it does provide tweaking the OAuth details via options provided to the constructor.
*/
async run<T extends Initializer>(initializer?: T, callback?: (app: OAuthApp<TCustomClaims>) => void | Promise<void>) {
await super.run(initializer, async (app: App) => this.onStart(app, callback));
}
}