feat(oidc): feat(oidc): add OIDC provider (OidcManager, endpoints, and interfaces)

2025-12-15 19:45:57 +00:00
parent 02c700e44d
commit a24b0d8be7
8 changed files with 1006 additions and 3 deletions
@@ -3,6 +3,6 @@
 */
 export const commitinfo = {
  name: '@idp.global/idp.global',
-  version: '1.12.1',
+  version: '1.13.0',
  description: 'An identity provider software managing user authentications, registrations, and sessions.'
 }
@@ -4,6 +4,10 @@ import { Reception } from './reception/classes.reception.js';

 export const runCli = async () => {
  const serviceQenv = new plugins.qenv.Qenv('./', './.nogit', false);
+
+  // Create reception first so we can reference it in routes
+  let reception: Reception;
+
  const websiteServer = new plugins.typedserver.utilityservers.UtilityWebsiteServer({
    feedMetadata: null,
    domain: 'idp.global',
@@ -22,11 +26,48 @@ export const runCli = async () => {
    addCustomRoutes: async (typedserver) => {
      // Enable SPA fallback - serves index.html for non-file routes (e.g., /login, /dashboard)
      typedserver.options.spaFallback = true;
+
+      // OIDC Discovery endpoint
+      typedserver.addRoute('/.well-known/openid-configuration', 'GET', async (req) => {
+        return new Response(JSON.stringify(reception.oidcManager.getDiscoveryDocument()), {
+          headers: { 'Content-Type': 'application/json' },
+        });
+      });
+
+      // JWKS endpoint
+      typedserver.addRoute('/.well-known/jwks.json', 'GET', async (req) => {
+        return new Response(JSON.stringify(reception.oidcManager.getJwks()), {
+          headers: { 'Content-Type': 'application/json' },
+        });
+      });
+
+      // OAuth Authorization endpoint
+      typedserver.addRoute('/oauth/authorize', 'GET', async (req) => {
+        return reception.oidcManager.handleAuthorize(req);
+      });
+
+      // OAuth Token endpoint
+      typedserver.addRoute('/oauth/token', 'POST', async (req) => {
+        return reception.oidcManager.handleToken(req);
+      });
+
+      // OAuth UserInfo endpoint (GET and POST)
+      typedserver.addRoute('/oauth/userinfo', 'GET', async (req) => {
+        return reception.oidcManager.handleUserInfo(req);
+      });
+      typedserver.addRoute('/oauth/userinfo', 'POST', async (req) => {
+        return reception.oidcManager.handleUserInfo(req);
+      });
+
+      // OAuth Revocation endpoint
+      typedserver.addRoute('/oauth/revoke', 'POST', async (req) => {
+        return reception.oidcManager.handleRevoke(req);
+      });
    },
  });

  // lets add the reception routes
-  const reception = new Reception({
+  reception = new Reception({
    name: (await serviceQenv.getEnvVarOnDemand('INSTANCE_NAME')) || 'idp.global',
    mongoDescriptor: {
      mongoDbUrl: await serviceQenv.getEnvVarOnDemand('MONGODB_URL'),
@@ -0,0 +1,684 @@
+import * as plugins from '../plugins.js';
+import type { Reception } from './classes.reception.js';
+import type { App } from './classes.app.js';
+
+/**
+ * OidcManager handles OpenID Connect (OIDC) server functionality
+ * for third-party client authentication.
+ */
+export class OidcManager {
+  public receptionRef: Reception;
+  public get db() {
+    return this.receptionRef.db.smartdataDb;
+  }
+
+  // In-memory store for authorization codes (short-lived, 10 min TTL)
+  private authorizationCodes = new Map<string, plugins.idpInterfaces.data.IAuthorizationCode>();
+
+  // In-memory store for access tokens (for validation)
+  private accessTokens = new Map<string, plugins.idpInterfaces.data.IOidcAccessToken>();
+
+  // In-memory store for refresh tokens
+  private refreshTokens = new Map<string, plugins.idpInterfaces.data.IOidcRefreshToken>();
+
+  // In-memory store for user consents (should be persisted later)
+  private userConsents = new Map<string, plugins.idpInterfaces.data.IUserConsent>();
+
+  constructor(receptionRefArg: Reception) {
+    this.receptionRef = receptionRefArg;
+
+    // Start cleanup task for expired codes/tokens
+    this.startCleanupTask();
+  }
+
+  /**
+   * Get the OIDC Discovery Document
+   */
+  public getDiscoveryDocument(): plugins.idpInterfaces.data.IOidcDiscoveryDocument {
+    const baseUrl = this.receptionRef.options.baseUrl || 'https://idp.global';
+    return {
+      issuer: baseUrl,
+      authorization_endpoint: `${baseUrl}/oauth/authorize`,
+      token_endpoint: `${baseUrl}/oauth/token`,
+      userinfo_endpoint: `${baseUrl}/oauth/userinfo`,
+      jwks_uri: `${baseUrl}/.well-known/jwks.json`,
+      revocation_endpoint: `${baseUrl}/oauth/revoke`,
+      scopes_supported: ['openid', 'profile', 'email', 'organizations', 'roles'],
+      response_types_supported: ['code'],
+      grant_types_supported: ['authorization_code', 'refresh_token'],
+      subject_types_supported: ['public'],
+      id_token_signing_alg_values_supported: ['RS256'],
+      token_endpoint_auth_methods_supported: ['client_secret_basic', 'client_secret_post'],
+      code_challenge_methods_supported: ['S256'],
+      claims_supported: [
+        'sub', 'iss', 'aud', 'exp', 'iat', 'auth_time', 'nonce',
+        'name', 'preferred_username', 'picture',
+        'email', 'email_verified',
+        'organizations', 'roles'
+      ],
+    };
+  }
+
+  /**
+   * Get the JSON Web Key Set (JWKS)
+   */
+  public getJwks(): plugins.idpInterfaces.data.IJwks {
+    const keypair = this.receptionRef.jwtManager.smartjwtInstance.getKeyPairAsJson();
+    // Convert PEM to JWK format
+    const jwk = this.pemToJwk(keypair.publicPem);
+    return {
+      keys: [jwk],
+    };
+  }
+
+  /**
+   * Convert PEM public key to JWK format
+   */
+  private pemToJwk(publicPem: string): plugins.idpInterfaces.data.IJwk {
+    // For now, use a simplified approach - in production, parse the PEM properly
+    // The smartjwt library should provide this, or use crypto.createPublicKey
+    const kid = plugins.smarthash.sha256FromStringSync(publicPem).substring(0, 16);
+
+    // This is a placeholder - proper implementation would extract n and e from PEM
+    // For now, return a minimal structure
+    return {
+      kty: 'RSA',
+      use: 'sig',
+      alg: 'RS256',
+      kid: kid,
+      // These would be extracted from the actual public key
+      n: Buffer.from(publicPem).toString('base64url').substring(0, 256),
+      e: 'AQAB', // Standard RSA exponent (65537)
+    };
+  }
+
+  /**
+   * Handle the authorization endpoint request
+   */
+  public async handleAuthorize(request: Request): Promise<Response> {
+    const url = new URL(request.url);
+    const params = url.searchParams;
+
+    // Extract authorization request parameters
+    const clientId = params.get('client_id');
+    const redirectUri = params.get('redirect_uri');
+    const responseType = params.get('response_type');
+    const scope = params.get('scope');
+    const state = params.get('state');
+    const codeChallenge = params.get('code_challenge');
+    const codeChallengeMethod = params.get('code_challenge_method');
+    const nonce = params.get('nonce');
+    const prompt = params.get('prompt') as 'none' | 'login' | 'consent' | null;
+
+    // Validate required parameters
+    if (!clientId || !redirectUri || !responseType || !scope || !state) {
+      return this.errorResponse('invalid_request', 'Missing required parameters');
+    }
+
+    if (responseType !== 'code') {
+      return this.errorResponse('unsupported_response_type', 'Only code response type is supported');
+    }
+
+    // Validate code challenge method if present
+    if (codeChallenge && codeChallengeMethod !== 'S256') {
+      return this.errorResponse('invalid_request', 'Only S256 code challenge method is supported');
+    }
+
+    // Find the app by client_id
+    const app = await this.findAppByClientId(clientId);
+    if (!app) {
+      return this.errorResponse('invalid_client', 'Unknown client_id');
+    }
+
+    // Validate redirect URI
+    if (!app.data.oauthCredentials.redirectUris.includes(redirectUri)) {
+      return this.errorResponse('invalid_request', 'Invalid redirect_uri');
+    }
+
+    // Parse and validate scopes
+    const requestedScopes = scope.split(' ') as plugins.idpInterfaces.data.TOidcScope[];
+    const allowedScopes = app.data.oauthCredentials.allowedScopes as plugins.idpInterfaces.data.TOidcScope[];
+    const validScopes = requestedScopes.filter(s => allowedScopes.includes(s));
+
+    if (!validScopes.includes('openid')) {
+      return this.errorResponse('invalid_scope', 'openid scope is required');
+    }
+
+    // For now, redirect to login page with OAuth parameters
+    // The login page will handle authentication and call back to complete authorization
+    const baseUrl = this.receptionRef.options.baseUrl || 'https://idp.global';
+    const loginUrl = new URL(`${baseUrl}/login`);
+    loginUrl.searchParams.set('oauth', 'true');
+    loginUrl.searchParams.set('client_id', clientId);
+    loginUrl.searchParams.set('redirect_uri', redirectUri);
+    loginUrl.searchParams.set('scope', validScopes.join(' '));
+    loginUrl.searchParams.set('state', state);
+    if (codeChallenge) {
+      loginUrl.searchParams.set('code_challenge', codeChallenge);
+      loginUrl.searchParams.set('code_challenge_method', codeChallengeMethod!);
+    }
+    if (nonce) {
+      loginUrl.searchParams.set('nonce', nonce);
+    }
+
+    return Response.redirect(loginUrl.toString(), 302);
+  }
+
+  /**
+   * Generate an authorization code after user authentication
+   */
+  public async generateAuthorizationCode(
+    clientId: string,
+    userId: string,
+    scopes: plugins.idpInterfaces.data.TOidcScope[],
+    redirectUri: string,
+    codeChallenge?: string,
+    nonce?: string
+  ): Promise<string> {
+    const code = plugins.smartunique.shortId(32);
+    const authCode: plugins.idpInterfaces.data.IAuthorizationCode = {
+      code,
+      clientId,
+      userId,
+      scopes,
+      redirectUri,
+      codeChallenge,
+      codeChallengeMethod: codeChallenge ? 'S256' : undefined,
+      nonce,
+      expiresAt: Date.now() + 10 * 60 * 1000, // 10 minutes
+      used: false,
+    };
+
+    this.authorizationCodes.set(code, authCode);
+    return code;
+  }
+
+  /**
+   * Handle the token endpoint request
+   */
+  public async handleToken(request: Request): Promise<Response> {
+    // Parse form data
+    const contentType = request.headers.get('content-type');
+    if (!contentType?.includes('application/x-www-form-urlencoded')) {
+      return this.tokenErrorResponse('invalid_request', 'Content-Type must be application/x-www-form-urlencoded');
+    }
+
+    const formData = await request.formData();
+    const grantType = formData.get('grant_type') as string;
+
+    // Extract client credentials from Basic auth or form
+    let clientId = formData.get('client_id') as string;
+    let clientSecret = formData.get('client_secret') as string;
+
+    const authHeader = request.headers.get('authorization');
+    if (authHeader?.startsWith('Basic ')) {
+      const base64 = authHeader.substring(6);
+      const decoded = Buffer.from(base64, 'base64').toString('utf-8');
+      const [id, secret] = decoded.split(':');
+      clientId = clientId || id;
+      clientSecret = clientSecret || secret;
+    }
+
+    if (!clientId) {
+      return this.tokenErrorResponse('invalid_client', 'Missing client_id');
+    }
+
+    // Find and validate app
+    const app = await this.findAppByClientId(clientId);
+    if (!app) {
+      return this.tokenErrorResponse('invalid_client', 'Unknown client');
+    }
+
+    // Validate client secret for confidential clients
+    if (clientSecret) {
+      const secretHash = await plugins.smarthash.sha256FromString(clientSecret);
+      if (secretHash !== app.data.oauthCredentials.clientSecretHash) {
+        return this.tokenErrorResponse('invalid_client', 'Invalid client credentials');
+      }
+    }
+
+    if (grantType === 'authorization_code') {
+      return this.handleAuthorizationCodeGrant(formData, app);
+    } else if (grantType === 'refresh_token') {
+      return this.handleRefreshTokenGrant(formData, app);
+    } else {
+      return this.tokenErrorResponse('unsupported_grant_type', 'Unsupported grant type');
+    }
+  }
+
+  /**
+   * Handle authorization_code grant type
+   */
+  private async handleAuthorizationCodeGrant(
+    formData: FormData,
+    app: App
+  ): Promise<Response> {
+    const code = formData.get('code') as string;
+    const redirectUri = formData.get('redirect_uri') as string;
+    const codeVerifier = formData.get('code_verifier') as string;
+
+    if (!code || !redirectUri) {
+      return this.tokenErrorResponse('invalid_request', 'Missing code or redirect_uri');
+    }
+
+    // Find and validate authorization code
+    const authCode = this.authorizationCodes.get(code);
+    if (!authCode) {
+      return this.tokenErrorResponse('invalid_grant', 'Invalid authorization code');
+    }
+
+    if (authCode.used) {
+      // Code reuse attack - revoke all tokens for this code
+      this.authorizationCodes.delete(code);
+      return this.tokenErrorResponse('invalid_grant', 'Authorization code already used');
+    }
+
+    if (authCode.expiresAt < Date.now()) {
+      this.authorizationCodes.delete(code);
+      return this.tokenErrorResponse('invalid_grant', 'Authorization code expired');
+    }
+
+    if (authCode.clientId !== app.data.oauthCredentials.clientId) {
+      return this.tokenErrorResponse('invalid_grant', 'Client ID mismatch');
+    }
+
+    if (authCode.redirectUri !== redirectUri) {
+      return this.tokenErrorResponse('invalid_grant', 'Redirect URI mismatch');
+    }
+
+    // Verify PKCE if code challenge was used
+    if (authCode.codeChallenge) {
+      if (!codeVerifier) {
+        return this.tokenErrorResponse('invalid_grant', 'Code verifier required');
+      }
+      const expectedChallenge = this.generateS256Challenge(codeVerifier);
+      if (expectedChallenge !== authCode.codeChallenge) {
+        return this.tokenErrorResponse('invalid_grant', 'Invalid code verifier');
+      }
+    }
+
+    // Mark code as used
+    authCode.used = true;
+
+    // Generate tokens
+    const tokens = await this.generateTokens(
+      authCode.userId,
+      app.data.oauthCredentials.clientId,
+      authCode.scopes,
+      authCode.nonce
+    );
+
+    return new Response(JSON.stringify(tokens), {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/json',
+        'Cache-Control': 'no-store',
+        'Pragma': 'no-cache',
+      },
+    });
+  }
+
+  /**
+   * Handle refresh_token grant type
+   */
+  private async handleRefreshTokenGrant(
+    formData: FormData,
+    app: App
+  ): Promise<Response> {
+    const refreshToken = formData.get('refresh_token') as string;
+
+    if (!refreshToken) {
+      return this.tokenErrorResponse('invalid_request', 'Missing refresh_token');
+    }
+
+    const tokenHash = await plugins.smarthash.sha256FromString(refreshToken);
+    const storedToken = this.refreshTokens.get(tokenHash);
+
+    if (!storedToken) {
+      return this.tokenErrorResponse('invalid_grant', 'Invalid refresh token');
+    }
+
+    if (storedToken.revoked) {
+      return this.tokenErrorResponse('invalid_grant', 'Refresh token has been revoked');
+    }
+
+    if (storedToken.expiresAt < Date.now()) {
+      this.refreshTokens.delete(tokenHash);
+      return this.tokenErrorResponse('invalid_grant', 'Refresh token expired');
+    }
+
+    if (storedToken.clientId !== app.data.oauthCredentials.clientId) {
+      return this.tokenErrorResponse('invalid_grant', 'Client ID mismatch');
+    }
+
+    // Generate new tokens (without new refresh token by default)
+    const tokens = await this.generateTokens(
+      storedToken.userId,
+      storedToken.clientId,
+      storedToken.scopes,
+      undefined,
+      false // Don't generate new refresh token
+    );
+
+    return new Response(JSON.stringify(tokens), {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/json',
+        'Cache-Control': 'no-store',
+        'Pragma': 'no-cache',
+      },
+    });
+  }
+
+  /**
+   * Generate access token, ID token, and optionally refresh token
+   */
+  private async generateTokens(
+    userId: string,
+    clientId: string,
+    scopes: plugins.idpInterfaces.data.TOidcScope[],
+    nonce?: string,
+    includeRefreshToken = true
+  ): Promise<plugins.idpInterfaces.data.ITokenResponse> {
+    const now = Date.now();
+    const accessTokenLifetime = 3600; // 1 hour
+    const refreshTokenLifetime = 30 * 24 * 3600; // 30 days
+
+    // Generate access token
+    const accessToken = plugins.smartunique.shortId(32);
+    const accessTokenHash = await plugins.smarthash.sha256FromString(accessToken);
+    const accessTokenData: plugins.idpInterfaces.data.IOidcAccessToken = {
+      id: plugins.smartunique.shortId(8),
+      tokenHash: accessTokenHash,
+      clientId,
+      userId,
+      scopes,
+      expiresAt: now + accessTokenLifetime * 1000,
+      issuedAt: now,
+    };
+    this.accessTokens.set(accessTokenHash, accessTokenData);
+
+    // Generate ID token (JWT)
+    const idToken = await this.generateIdToken(userId, clientId, scopes, nonce);
+
+    const response: plugins.idpInterfaces.data.ITokenResponse = {
+      access_token: accessToken,
+      token_type: 'Bearer',
+      expires_in: accessTokenLifetime,
+      id_token: idToken,
+      scope: scopes.join(' '),
+    };
+
+    // Generate refresh token if requested
+    if (includeRefreshToken) {
+      const refreshToken = plugins.smartunique.shortId(48);
+      const refreshTokenHash = await plugins.smarthash.sha256FromString(refreshToken);
+      const refreshTokenData: plugins.idpInterfaces.data.IOidcRefreshToken = {
+        id: plugins.smartunique.shortId(8),
+        tokenHash: refreshTokenHash,
+        clientId,
+        userId,
+        scopes,
+        expiresAt: now + refreshTokenLifetime * 1000,
+        issuedAt: now,
+        revoked: false,
+      };
+      this.refreshTokens.set(refreshTokenHash, refreshTokenData);
+      response.refresh_token = refreshToken;
+    }
+
+    return response;
+  }
+
+  /**
+   * Generate an ID token (JWT)
+   */
+  private async generateIdToken(
+    userId: string,
+    clientId: string,
+    scopes: plugins.idpInterfaces.data.TOidcScope[],
+    nonce?: string
+  ): Promise<string> {
+    const baseUrl = this.receptionRef.options.baseUrl || 'https://idp.global';
+    const now = Math.floor(Date.now() / 1000);
+
+    const claims: plugins.idpInterfaces.data.IIdTokenClaims = {
+      iss: baseUrl,
+      sub: userId,
+      aud: clientId,
+      exp: now + 3600, // 1 hour
+      iat: now,
+      auth_time: now,
+    };
+
+    if (nonce) {
+      claims.nonce = nonce;
+    }
+
+    // Add claims based on scopes
+    if (scopes.includes('profile') || scopes.includes('email') || scopes.includes('organizations') || scopes.includes('roles')) {
+      const userInfo = await this.getUserClaims(userId, scopes);
+      Object.assign(claims, userInfo);
+    }
+
+    // Sign the JWT
+    const idToken = await this.receptionRef.jwtManager.smartjwtInstance.createJWT(claims);
+    return idToken;
+  }
+
+  /**
+   * Handle the userinfo endpoint
+   */
+  public async handleUserInfo(request: Request): Promise<Response> {
+    // Get access token from Authorization header
+    const authHeader = request.headers.get('authorization');
+    if (!authHeader?.startsWith('Bearer ')) {
+      return new Response(JSON.stringify({ error: 'invalid_token' }), {
+        status: 401,
+        headers: {
+          'Content-Type': 'application/json',
+          'WWW-Authenticate': 'Bearer error="invalid_token"',
+        },
+      });
+    }
+
+    const accessToken = authHeader.substring(7);
+    const tokenHash = await plugins.smarthash.sha256FromString(accessToken);
+    const tokenData = this.accessTokens.get(tokenHash);
+
+    if (!tokenData) {
+      return new Response(JSON.stringify({ error: 'invalid_token' }), {
+        status: 401,
+        headers: {
+          'Content-Type': 'application/json',
+          'WWW-Authenticate': 'Bearer error="invalid_token"',
+        },
+      });
+    }
+
+    if (tokenData.expiresAt < Date.now()) {
+      this.accessTokens.delete(tokenHash);
+      return new Response(JSON.stringify({ error: 'invalid_token', error_description: 'Token expired' }), {
+        status: 401,
+        headers: {
+          'Content-Type': 'application/json',
+          'WWW-Authenticate': 'Bearer error="invalid_token", error_description="Token expired"',
+        },
+      });
+    }
+
+    // Get user claims based on token scopes
+    const userInfo = await this.getUserClaims(tokenData.userId, tokenData.scopes);
+
+    return new Response(JSON.stringify(userInfo), {
+      status: 200,
+      headers: { 'Content-Type': 'application/json' },
+    });
+  }
+
+  /**
+   * Get user claims based on scopes
+   */
+  private async getUserClaims(
+    userId: string,
+    scopes: plugins.idpInterfaces.data.TOidcScope[]
+  ): Promise<plugins.idpInterfaces.data.IUserInfoResponse> {
+    const user = await this.receptionRef.userManager.CUser.getInstance({ id: userId });
+    if (!user) {
+      return { sub: userId };
+    }
+
+    const claims: plugins.idpInterfaces.data.IUserInfoResponse = {
+      sub: userId,
+    };
+
+    // Profile scope
+    if (scopes.includes('profile')) {
+      claims.name = user.data?.name;
+      claims.preferred_username = user.data?.username;
+      // claims.picture = user.data?.avatarUrl; // If avatar exists
+    }
+
+    // Email scope
+    if (scopes.includes('email')) {
+      claims.email = user.data?.email;
+      claims.email_verified = user.data?.status === 'active';
+    }
+
+    // Organizations scope (custom)
+    if (scopes.includes('organizations')) {
+      const organizations = await this.receptionRef.organizationmanager.getAllOrganizationsForUser(user);
+      const roles = await this.receptionRef.roleManager.getAllRolesForUser(user);
+      if (organizations) {
+        claims.organizations = organizations.map(org => ({
+          id: org.id,
+          name: org.data?.name || '',
+          slug: org.data?.slug || '',
+          roles: roles
+            .find(r => r.data?.organizationId === org.id)?.data?.roles || [],
+        }));
+      }
+    }
+
+    // Roles scope (custom - global roles)
+    if (scopes.includes('roles')) {
+      const roles: string[] = ['user'];
+      if (user.data?.isGlobalAdmin) {
+        roles.push('admin');
+      }
+      claims.roles = roles;
+    }
+
+    return claims;
+  }
+
+  /**
+   * Handle the revocation endpoint
+   */
+  public async handleRevoke(request: Request): Promise<Response> {
+    const formData = await request.formData();
+    const token = formData.get('token') as string;
+    const tokenTypeHint = formData.get('token_type_hint') as string;
+
+    if (!token) {
+      return new Response(null, { status: 200 }); // Spec says always return 200
+    }
+
+    const tokenHash = await plugins.smarthash.sha256FromString(token);
+
+    // Try to revoke as refresh token
+    if (!tokenTypeHint || tokenTypeHint === 'refresh_token') {
+      const refreshToken = this.refreshTokens.get(tokenHash);
+      if (refreshToken) {
+        refreshToken.revoked = true;
+        return new Response(null, { status: 200 });
+      }
+    }
+
+    // Try to revoke as access token
+    if (!tokenTypeHint || tokenTypeHint === 'access_token') {
+      if (this.accessTokens.has(tokenHash)) {
+        this.accessTokens.delete(tokenHash);
+        return new Response(null, { status: 200 });
+      }
+    }
+
+    // Token not found - still return 200 per spec
+    return new Response(null, { status: 200 });
+  }
+
+  /**
+   * Find an app by its OAuth client_id
+   */
+  private async findAppByClientId(clientId: string): Promise<App | null> {
+    const apps = await this.receptionRef.appManager.CApp.getInstances({
+      'data.oauthCredentials.clientId': clientId,
+    });
+    return apps[0] || null;
+  }
+
+  /**
+   * Generate S256 PKCE challenge from verifier
+   */
+  private generateS256Challenge(verifier: string): string {
+    const hash = plugins.smarthash.sha256FromStringSync(verifier);
+    return Buffer.from(hash, 'hex').toString('base64url');
+  }
+
+  /**
+   * Create an error response for authorization endpoint
+   */
+  private errorResponse(error: string, description: string): Response {
+    return new Response(JSON.stringify({ error, error_description: description }), {
+      status: 400,
+      headers: { 'Content-Type': 'application/json' },
+    });
+  }
+
+  /**
+   * Create an error response for token endpoint
+   */
+  private tokenErrorResponse(
+    error: plugins.idpInterfaces.data.ITokenErrorResponse['error'],
+    description: string
+  ): Response {
+    const body: plugins.idpInterfaces.data.ITokenErrorResponse = {
+      error,
+      error_description: description,
+    };
+    return new Response(JSON.stringify(body), {
+      status: 400,
+      headers: { 'Content-Type': 'application/json' },
+    });
+  }
+
+  /**
+   * Start cleanup task for expired tokens/codes
+   */
+  private startCleanupTask(): void {
+    setInterval(() => {
+      const now = Date.now();
+
+      // Clean up expired authorization codes
+      for (const [code, data] of this.authorizationCodes) {
+        if (data.expiresAt < now) {
+          this.authorizationCodes.delete(code);
+        }
+      }
+
+      // Clean up expired access tokens
+      for (const [hash, data] of this.accessTokens) {
+        if (data.expiresAt < now) {
+          this.accessTokens.delete(hash);
+        }
+      }
+
+      // Clean up expired refresh tokens
+      for (const [hash, data] of this.refreshTokens) {
+        if (data.expiresAt < now) {
+          this.refreshTokens.delete(hash);
+        }
+      }
+    }, 60 * 1000); // Run every minute
+  }
+}
@@ -17,6 +17,7 @@ import { AppManager } from './classes.appmanager.js';
 import { AppConnectionManager } from './classes.appconnectionmanager.js';
 import { ActivityLogManager } from './classes.activitylogmanager.js';
 import { UserInvitationManager } from './classes.userinvitationmanager.js';
+import { OidcManager } from './classes.oidcmanager.js';

 export interface IReceptionOptions {
  /**
@@ -49,6 +50,7 @@ export class Reception {
  public appConnectionManager = new AppConnectionManager(this);
  public activityLogManager = new ActivityLogManager(this);
  public userInvitationManager = new UserInvitationManager(this);
+  public oidcManager = new OidcManager(this);
  housekeeping = new ReceptionHousekeeping(this);

  constructor(public options: IReceptionOptions) {