{"id":11476,"library":"oauth2orize","title":"OAuth2orize - OAuth 2.0 Authorization Server Toolkit","description":"OAuth2orize is a Node.js toolkit designed for implementing OAuth 2.0 authorization servers. It provides a suite of modular middleware functions that allow developers to construct a server supporting various OAuth 2.0 grant types, such as authorization code, implicit, password, and client credentials, along with refresh token functionality. The library, currently at stable version 1.12.0, integrates seamlessly with Passport.js for user authentication, acting primarily as the authorization layer. Its architecture requires application-specific route handlers and persistent storage for clients, authorization codes, and access tokens, which are not provided out-of-the-box. Due to its long-standing stability and minimal recent updates (last published 2 years ago), it operates under a maintenance release cadence, indicating it's a mature project rather than one undergoing active feature development. A key differentiator is its highly pluggable middleware design, allowing granular control over the OAuth flow, though this also means more boilerplate compared to opinionated, full-stack solutions.","status":"maintenance","version":"1.12.0","language":"javascript","source_language":"en","source_url":"git://github.com/jaredhanson/oauth2orize","tags":["javascript","oauth","oauth2","auth","authz","authorization","connect","express","passport"],"install":[{"cmd":"npm install oauth2orize","lang":"bash","label":"npm"},{"cmd":"yarn add oauth2orize","lang":"bash","label":"yarn"},{"cmd":"pnpm add oauth2orize","lang":"bash","label":"pnpm"}],"dependencies":[{"reason":"Strongly coupled for user authentication; often used with connect-ensure-login for session management.","package":"passport","optional":false},{"reason":"Designed to be used as Express middleware for handling authorization endpoints.","package":"express","optional":true}],"imports":[{"note":"OAuth2orize is a CommonJS module. ESM imports are not supported.","wrong":"import { createServer } from 'oauth2orize';","symbol":"createServer","correct":"const oauth2orize = require('oauth2orize');\nconst server = oauth2orize.createServer();"},{"note":"Grant types are exposed as properties of `oauth2orize.grant`.","wrong":"import { grant } from 'oauth2orize';\nserver.grant(grant.code(...));","symbol":"grant.code","correct":"const oauth2orize = require('oauth2orize');\nserver.grant(oauth2orize.grant.code(...));"},{"note":"Exchange types are exposed as properties of `oauth2orize.exchange`.","wrong":"import { exchange } from 'oauth2orize';\nserver.exchange(exchange.code(...));","symbol":"exchange.code","correct":"const oauth2orize = require('oauth2orize');\nserver.exchange(oauth2orize.exchange.code(...));"}],"quickstart":{"code":"const express = require('express');\nconst oauth2orize = require('oauth2orize');\nconst passport = require('passport');\nconst BasicStrategy = require('passport-http').BasicStrategy;\n\n// Mock database/storage for demonstration\nconst db = {\n  clients: [{ id: 'client1', secret: 'secret1', redirectUri: 'http://localhost:3000/auth/example/callback' }],\n  users: [{ id: 'user1', username: 'testuser', password: 'password' }],\n  authorizationCodes: [],\n  accessTokens: []\n};\n\n// Mock utility for UID generation\nconst utils = {\n  uid: (len) => Math.random().toString(36).substring(2, 2 + len)\n};\n\nconst app = express();\napp.use(express.urlencoded({ extended: true })); // For parsing x-www-form-urlencoded\napp.use(express.json()); // For parsing application/json\napp.use(require('express-session')({ secret: 'keyboard cat', resave: false, saveUninitialized: false }));\napp.use(passport.initialize());\napp.use(passport.session());\n\n// Passport setup (simplified for example)\npassport.use(new BasicStrategy(function(username, password, done) {\n  const user = db.users.find(u => u.username === username && u.password === password);\n  if (!user) { return done(null, false); }\n  return done(null, user);\n}));\n\npassport.serializeUser(function(user, done) { done(null, user.id); });\npassport.deserializeUser(function(id, done) {\n  const user = db.users.find(u => u.id === id);\n  done(null, user);\n});\n\n// Create OAuth 2.0 server\nconst server = oauth2orize.createServer();\n\n// Register authorization code grant type\nserver.grant(oauth2orize.grant.code(function(client, redirectURI, user, ares, done) {\n  const code = utils.uid(16);\n  db.authorizationCodes.push({ code, clientId: client.id, redirectUri, userId: user.id, scope: ares.scope });\n  done(null, code);\n}));\n\n// Register authorization code exchange type\nserver.exchange(oauth2orize.exchange.code(function(client, code, redirectURI, done) {\n  const authCode = db.authorizationCodes.find(ac => ac.code === code && ac.clientId === client.id && ac.redirectUri === redirectURI);\n  if (!authCode) { return done(null, false); }\n  // Remove code after use (one-time use)\n  db.authorizationCodes = db.authorizationCodes.filter(ac => ac.code !== code);\n\n  const token = utils.uid(256);\n  db.accessTokens.push({ token, userId: authCode.userId, clientId: authCode.clientId, scope: authCode.scope });\n  done(null, token);\n}));\n\n// Authorization endpoint\napp.get('/dialog/authorize',\n  passport.authenticate('session'), // Ensure user is logged in via Passport session\n  server.authorize(function(clientId, redirectURI, done) {\n    const client = db.clients.find(c => c.id === clientId);\n    if (!client) { return done(null, false); }\n    if (client.redirectUri !== redirectURI) { return done(new Error('Invalid redirect URI'), false); }\n    done(null, client, client.redirectUri);\n  }),\n  function(req, res) {\n    // Render a consent dialog\n    res.send(`\n      <h1>Authorize ${req.oauth2.client.id} to access your account?</h1>\n      <form action=\"/dialog/authorize/decision\" method=\"POST\">\n        <input type=\"hidden\" name=\"transaction_id\" value=\"${req.oauth2.transactionID}\">\n        <input type=\"submit\" value=\"Allow\" name=\"allow\">\n        <input type=\"submit\" value=\"Deny\" name=\"deny\">\n      </form>\n    `);\n  }\n);\n\n// Decision endpoint\napp.post('/dialog/authorize/decision',\n  passport.authenticate('session'),\n  server.decision()\n);\n\n// Token endpoint\napp.post('/oauth/token',\n  passport.authenticate(['basic', 'oauth2-client-password'], { session: false }),\n  server.token(),\n  server.errorHandler()\n);\n\napp.listen(3000, () => console.log('OAuth2orize server listening on port 3000'));","lang":"javascript","description":"Demonstrates a basic OAuth 2.0 authorization server setup using `oauth2orize` with Express and Passport, including authorization code grant and exchange. It includes mocked storage for clients, users, authorization codes, and access tokens to be runnable."},"warnings":[{"fix":"Review and manually implement modern OAuth 2.1 security best practices, or consider a more actively developed library that natively supports OAuth 2.1. For specific extensions, look for related `oauth2orize-` modules (e.g., `oauth2orize-pkce`).","message":"OAuth2orize is built upon older specifications (OAuth 2.0 RFC 6749) and does not inherently conform to the latest OAuth 2.1 best practices. Key security enhancements like PKCE enforcement for all clients, refresh token rotation, and strict redirect URI matching (now mandatory in OAuth 2.1) are not automatically handled and require manual implementation or external modules.","severity":"breaking","affected_versions":">=1.0.0"},{"fix":"Ensure your project is configured for CommonJS or use `require()` statements for `oauth2orize` and its components. If using in an ESM project, consider dynamic `import()` or a CJS wrapper.","message":"The library is CommonJS-only (`require`) and does not support ES Modules (`import`). Attempting to use `import` statements will result in runtime errors like 'oauth2orize is not a function' or 'Cannot find module'.","severity":"gotcha","affected_versions":">=1.0.0"},{"fix":"Implement custom storage and retrieval functions for all OAuth entities. The library callbacks provide the necessary hooks to interact with your chosen database or data store.","message":"OAuth2orize provides the framework for an OAuth 2.0 server but does not include any persistence layer for clients, users, authorization codes, or access tokens. Developers must implement their own storage mechanisms (e.g., database integrations).","severity":"gotcha","affected_versions":">=1.0.0"},{"fix":"Integrate and configure Passport.js with appropriate strategies (e.g., `passport-local`, `passport-session`) and ensure the user is authenticated (e.g., via `passport.authenticate('session')` or `login.ensureLoggedIn()`) before calling `server.authorize()`.","message":"The library relies heavily on Passport.js for user authentication before authorization. Without a correctly configured Passport setup, the `server.authorize()` middleware will not function as expected for authenticating the end-user.","severity":"gotcha","affected_versions":">=1.0.0"},{"fix":"Avoid implementing or migrate existing applications away from Implicit Grant and ROPC. For user-facing clients, utilize the Authorization Code Flow with PKCE. For machine-to-machine communication, use the Client Credentials Flow.","message":"OAuth 2.1 has officially deprecated and removed the Implicit Grant Flow and the Resource Owner Password Credentials (ROPC) Grant Flow due to security vulnerabilities. While OAuth2orize supports these flows, their use in new applications is strongly discouraged.","severity":"deprecated","affected_versions":">=1.0.0"}],"env_vars":null,"last_verified":"2026-04-19T00:00:00.000Z","next_check":"2026-07-18T00:00:00.000Z","problems":[{"fix":"Use CommonJS `require` syntax: `const oauth2orize = require('oauth2orize'); const server = oauth2orize.createServer();`","cause":"Attempting to use ES Module `import` syntax (`import { createServer } from 'oauth2orize'`) with a CommonJS-only library.","error":"TypeError: oauth2orize.createServer is not a function"},{"fix":"Ensure the `redirectURI` in your client registration (`db.clients` in the example) precisely matches the `redirect_uri` parameter sent by the client in the authorization request.","cause":"The `redirectURI` provided by the client in the authorization request does not exactly match the `redirectUri` registered for that client on your OAuth2orize server.","error":"Error: Invalid redirect URI"},{"fix":"Define these models/utilities (e.g., `AuthorizationCode` and `AccessToken` classes with persistence logic, or a `utils` object with a `uid` function) in your application code.","cause":"The example code in the documentation often uses placeholder models or utility functions (`AuthorizationCode`, `AccessToken`, `utils.uid`) that are not part of `oauth2orize` itself and must be provided by the implementer.","error":"ReferenceError: XXX is not defined (e.g., AuthorizationCode, AccessToken, utils)"}],"ecosystem":"npm"}