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merge authorization validation logic

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This commit is contained in:
Kagami Sascha Rosylight
2023-04-16 15:43:32 +02:00
parent 8e7fc1ed98
commit 94ea15d2d7
2 changed files with 40 additions and 39 deletions
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77
packages/backend/src/server/oauth/OAuth2ProviderService.ts
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@@ -261,15 +261,14 @@ type OmitFirstElement<T extends unknown[]> = T extends [unknown, ...(infer R)]
? R
: [];
interface OAuthRequestQuery {
response_type: string;
client_id: string;
redirect_uri: string;
interface OAuthRequest {
type: string;
clientID: string;
redirectURI: string;
state: string;
code_challenge: string;
code_challenge_method: string;
scope?: string;
me?: string;
codeChallenge: string;
codeChallengeMethod: string;
scope: string[];
}
@Injectable()
@@ -431,37 +430,15 @@ export class OAuth2ProviderService {
// For now only allow the basic OAuth endpoints, to start small and evaluate
// this feature for some time, given that this is security related.
fastify.get<{ Querystring: OAuthRequestQuery }>('/oauth/authorize', async (request, reply) => {
console.log('HIT /oauth/authorize', request.query);
fastify.get('/oauth/authorize', async (request, reply) => {
const oauth2 = (request.raw as any).oauth2 as OAuth2;
console.log(oauth2, request.raw.session);
const scopes = [...new Set(oauth2.req.scope)].filter(s => kinds.includes(s));
try {
if (!scopes.length) {
throw new AuthorizationError('`scope` parameter has no known scope', 'invalid_scope');
}
oauth2.req.scope = scopes;
if (request.query.response_type !== 'code') {
throw new AuthorizationError('`response_type` parameter must be set as "code"', 'invalid_request');
}
if (typeof request.query.code_challenge !== 'string') {
throw new AuthorizationError('`code_challenge` parameter is required', 'invalid_request');
}
if (request.query.code_challenge_method !== 'S256') {
throw new AuthorizationError('`code_challenge_method` parameter must be set as S256', 'invalid_request');
}
} catch (err: any) {
this.#server.errorHandler()(err, request.raw, reply.raw, null as any);
return;
}
console.log('HIT /oauth/authorize', request.query, oauth2, request.raw.session);
reply.header('Cache-Control', 'no-store');
return await reply.view('oauth', {
transactionId: oauth2.transactionID,
clientName: oauth2.client.name,
scope: scopes.join(' '),
scope: (oauth2.req.scope as any as string[]).join(' '),
});
});
fastify.post('/oauth/decision', async () => { });
@@ -479,12 +456,31 @@ export class OAuth2ProviderService {
});
await fastify.register(fastifyExpress);
// TODO: use redis session store to prevent memory leak
fastify.use(expressSession({ secret: 'keyboard cat', resave: false, saveUninitialized: false }) as any);
fastify.use('/oauth/authorize', this.#server.authorization((clientId, redirectUri, done) => {
fastify.use('/oauth/authorize', this.#server.authorization((areq: OAuthRequest, done: (err: Error | null, client?: any, redirectURI?: string) => void) => {
(async (): Promise<OmitFirstElement<Parameters<typeof done>>> => {
console.log('HIT /oauth/authorize validation middleware');
console.log('HIT /oauth/authorize validation middleware', areq);
const clientUrl = validateClientId(clientId);
const { codeChallenge, codeChallengeMethod, clientID, redirectURI, scope, type } = areq;
const scopes = [...new Set(scope)].filter(s => kinds.includes(s));
if (!scopes.length) {
throw new AuthorizationError('`scope` parameter has no known scope', 'invalid_scope');
}
areq.scope = scopes;
if (type !== 'code') {
throw new AuthorizationError('`response_type` parameter must be set as "code"', 'invalid_request');
}
if (typeof codeChallenge !== 'string') {
throw new AuthorizationError('`code_challenge` parameter is required', 'invalid_request');
}
if (codeChallengeMethod !== 'S256') {
throw new AuthorizationError('`code_challenge_method` parameter must be set as S256', 'invalid_request');
}
const clientUrl = validateClientId(clientID);
if (process.env.NODE_ENV !== 'test' || process.env.MISSKEY_TEST_DISALLOW_LOOPBACK === '1') {
const lookup = await dns.lookup(clientUrl.hostname);
@@ -495,14 +491,17 @@ export class OAuth2ProviderService {
// Find client information from the remote.
const clientInfo = await discoverClientInformation(this.httpRequestService, clientUrl.href);
if (!clientInfo.redirectUris.includes(redirectUri)) {
if (!clientInfo.redirectUris.includes(redirectURI)) {
throw new AuthorizationError('Invalid redirect_uri', 'invalid_request');
}
return [clientInfo, redirectUri];
return [clientInfo, redirectURI];
})().then(args => done(null, ...args), err => done(err));
}));
fastify.use('/oauth/authorize', this.#server.errorHandler()); // TODO: use mode: indirect?
// TODO: use mode: indirect
// https://datatracker.ietf.org/doc/html/rfc6749.html#section-4.1.2.1
// But make sure not to redirect to an invalid redirect_uri
fastify.use('/oauth/authorize', this.#server.errorHandler());
// for (const middleware of this.#server.decision()) {
fastify.use('/oauth/decision', bodyParser.urlencoded({ extended: false }));