upd: change oauth
This commit is contained in:
Mar0xy
parent
250beca901
commit
c782085af4
3 changed files with 76 additions and 458 deletions
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@ -167,6 +167,7 @@
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"typeorm": "0.3.17",
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"typescript": "5.2.2",
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"ulid": "2.3.0",
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"uuid": "^9.0.1",
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"vary": "1.1.2",
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"web-push": "3.6.6",
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"ws": "8.14.2",
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@ -212,6 +213,7 @@
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"@types/sinonjs__fake-timers": "8.1.2",
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"@types/tinycolor2": "1.4.4",
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"@types/tmp": "0.2.4",
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"@types/uuid": "^9.0.4",
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"@types/vary": "1.1.0",
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"@types/web-push": "3.6.0",
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"@types/ws": "8.5.5",
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@ -3,359 +3,28 @@
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import dns from 'node:dns/promises';
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import { fileURLToPath } from 'node:url';
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import { Inject, Injectable } from '@nestjs/common';
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import { JSDOM } from 'jsdom';
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import httpLinkHeader from 'http-link-header';
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import ipaddr from 'ipaddr.js';
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import oauth2orize, { type OAuth2, AuthorizationError, ValidateFunctionArity2, OAuth2Req, MiddlewareRequest } from 'oauth2orize';
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import oauth2Pkce from 'oauth2orize-pkce';
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import fastifyView from '@fastify/view';
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import pug from 'pug';
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import bodyParser from 'body-parser';
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import fastifyExpress from '@fastify/express';
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import { verifyChallenge } from 'pkce-challenge';
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import { mf2 } from 'microformats-parser';
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import { secureRndstr } from '@/misc/secure-rndstr.js';
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import { HttpRequestService } from '@/core/HttpRequestService.js';
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import { kinds } from '@/misc/api-permissions.js';
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import megalodon, { MegalodonInterface } from 'megalodon';
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import { v4 as uuid } from 'uuid';
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/* import { kinds } from '@/misc/api-permissions.js';
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import type { Config } from '@/config.js';
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import { DI } from '@/di-symbols.js';
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import { DI } from '@/di-symbols.js'; */
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import { bindThis } from '@/decorators.js';
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import type { AccessTokensRepository, UsersRepository } from '@/models/_.js';
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import { IdService } from '@/core/IdService.js';
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import { CacheService } from '@/core/CacheService.js';
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import type { MiLocalUser } from '@/models/User.js';
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import { MemoryKVCache } from '@/misc/cache.js';
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import { LoggerService } from '@/core/LoggerService.js';
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import Logger from '@/logger.js';
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import { StatusError } from '@/misc/status-error.js';
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import type { ServerResponse } from 'node:http';
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import type { FastifyInstance } from 'fastify';
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const base64regex = /^([0-9a-zA-Z+/]{4})*(([0-9a-zA-Z+/]{2}==)|([0-9a-zA-Z+/]{3}=))?$/;
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// TODO: Consider migrating to @node-oauth/oauth2-server once
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// https://github.com/node-oauth/node-oauth2-server/issues/180 is figured out.
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// Upstream the various validations and RFC9207 implementation in that case.
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// Follows https://indieauth.spec.indieweb.org/#client-identifier
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// This is also mostly similar to https://developers.google.com/identity/protocols/oauth2/web-server#uri-validation
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// although Google has stricter rule.
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function validateClientId(raw: string): URL {
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// "Clients are identified by a [URL]."
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const url = ((): URL => {
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try {
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if (base64regex.test(raw)) return new URL(atob(raw));
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return new URL(raw);
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} catch { throw new AuthorizationError('client_id must be a valid URL', 'invalid_request'); }
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})();
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// "Client identifier URLs MUST have either an https or http scheme"
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// But then again:
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// https://datatracker.ietf.org/doc/html/rfc6749.html#section-3.1.2.1
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// 'The redirection endpoint SHOULD require the use of TLS as described
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// in Section 1.6 when the requested response type is "code" or "token"'
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const allowedProtocols = process.env.NODE_ENV === 'test' ? ['http:', 'https:'] : ['https:'];
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if (!allowedProtocols.includes(url.protocol)) {
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throw new AuthorizationError('client_id must be a valid HTTPS URL', 'invalid_request');
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}
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// "MUST contain a path component (new URL() implicitly adds one)"
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// "MUST NOT contain single-dot or double-dot path segments,"
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const segments = url.pathname.split('/');
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if (segments.includes('.') || segments.includes('..')) {
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throw new AuthorizationError('client_id must not contain dot path segments', 'invalid_request');
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}
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// ("MAY contain a query string component")
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// "MUST NOT contain a fragment component"
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if (url.hash) {
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throw new AuthorizationError('client_id must not contain a fragment component', 'invalid_request');
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}
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// "MUST NOT contain a username or password component"
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if (url.username || url.password) {
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throw new AuthorizationError('client_id must not contain a username or a password', 'invalid_request');
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}
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// ("MAY contain a port")
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// "host names MUST be domain names or a loopback interface and MUST NOT be
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// IPv4 or IPv6 addresses except for IPv4 127.0.0.1 or IPv6 [::1]."
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if (!url.hostname.match(/\.\w+$/) && !['localhost', '127.0.0.1', '[::1]'].includes(url.hostname)) {
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throw new AuthorizationError('client_id must have a domain name as a host name', 'invalid_request');
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}
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return url;
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}
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interface ClientInformation {
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id: string;
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redirectUris: string[];
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name: string;
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}
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// https://indieauth.spec.indieweb.org/#client-information-discovery
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// "Authorization servers SHOULD support parsing the [h-app] Microformat from the client_id,
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// and if there is an [h-app] with a url property matching the client_id URL,
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// then it should use the name and icon and display them on the authorization prompt."
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// (But we don't display any icon for now)
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// https://indieauth.spec.indieweb.org/#redirect-url
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// "The client SHOULD publish one or more <link> tags or Link HTTP headers with a rel attribute
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// of redirect_uri at the client_id URL.
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// Authorization endpoints verifying that a redirect_uri is allowed for use by a client MUST
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// look for an exact match of the given redirect_uri in the request against the list of
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// redirect_uris discovered after resolving any relative URLs."
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async function discoverClientInformation(logger: Logger, httpRequestService: HttpRequestService, id: string): Promise<ClientInformation> {
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try {
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const res = await httpRequestService.send(id);
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const redirectUris: string[] = [];
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const linkHeader = res.headers.get('link');
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if (linkHeader) {
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redirectUris.push(...httpLinkHeader.parse(linkHeader).get('rel', 'redirect_uri').map(r => r.uri));
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}
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const text = await res.text();
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const fragment = JSDOM.fragment(text);
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redirectUris.push(...[...fragment.querySelectorAll<HTMLLinkElement>('link[rel=redirect_uri][href]')].map(el => el.href));
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let name = id;
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if (text) {
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const microformats = mf2(text, { baseUrl: res.url });
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const nameProperty = microformats.items.find(item => item.type?.includes('h-app') && item.properties.url.includes(id))?.properties.name[0];
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if (typeof nameProperty === 'string') {
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name = nameProperty;
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}
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}
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return {
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id,
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redirectUris: redirectUris.map(uri => new URL(uri, res.url).toString()),
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name: typeof name === 'string' ? name : id,
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};
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} catch (err) {
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console.error(err);
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logger.error('Error while fetching client information', { err });
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if (err instanceof StatusError) {
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throw new AuthorizationError('Failed to fetch client information', 'invalid_request');
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} else {
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throw new AuthorizationError('Failed to parse client information', 'server_error');
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}
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}
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}
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type OmitFirstElement<T extends unknown[]> = T extends [unknown, ...(infer R)]
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? R
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: [];
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interface OAuthParsedRequest extends OAuth2Req {
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codeChallenge: string;
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codeChallengeMethod: string;
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}
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interface OAuthHttpResponse extends ServerResponse {
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redirect(location: string): void;
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}
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interface OAuth2DecisionRequest extends MiddlewareRequest {
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body: {
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transaction_id: string;
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cancel: boolean;
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login_token: string;
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}
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}
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function getQueryMode(issuerUrl: string): oauth2orize.grant.Options['modes'] {
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return {
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query: (txn, res, params): void => {
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// https://datatracker.ietf.org/doc/html/rfc9207#name-response-parameter-iss
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// "In authorization responses to the client, including error responses,
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// an authorization server supporting this specification MUST indicate its
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// identity by including the iss parameter in the response."
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params.iss = issuerUrl;
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const parsed = new URL(txn.redirectURI);
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for (const [key, value] of Object.entries(params)) {
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parsed.searchParams.append(key, value as string);
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}
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return (res as OAuthHttpResponse).redirect(parsed.toString());
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},
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};
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}
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/**
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* Maps the transaction ID and the oauth/authorize parameters.
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*
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* Flow:
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* 1. oauth/authorize endpoint will call store() to store the parameters
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* and puts the generated transaction ID to the dialog page
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* 2. oauth/decision will call load() to retrieve the parameters and then remove()
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*/
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class OAuth2Store {
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#cache = new MemoryKVCache<OAuth2>(1000 * 60 * 5); // expires after 5min
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load(req: OAuth2DecisionRequest, cb: (err: Error | null, txn?: OAuth2) => void): void {
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const { transaction_id } = req.body;
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if (!transaction_id) {
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cb(new AuthorizationError('Missing transaction ID', 'invalid_request'));
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return;
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}
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const loaded = this.#cache.get(transaction_id);
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if (!loaded) {
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cb(new AuthorizationError('Invalid or expired transaction ID', 'access_denied'));
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return;
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}
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cb(null, loaded);
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}
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store(req: OAuth2DecisionRequest, oauth2: OAuth2, cb: (err: Error | null, transactionID?: string) => void): void {
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const transactionId = secureRndstr(128);
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this.#cache.set(transactionId, oauth2);
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cb(null, transactionId);
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}
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remove(req: OAuth2DecisionRequest, tid: string, cb: () => void): void {
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this.#cache.delete(tid);
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cb();
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}
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}
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@Injectable()
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export class OAuth2ProviderService {
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#server = oauth2orize.createServer({
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store: new OAuth2Store(),
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});
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#logger: Logger;
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constructor(
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@Inject(DI.config)
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private config: Config,
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private httpRequestService: HttpRequestService,
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@Inject(DI.accessTokensRepository)
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accessTokensRepository: AccessTokensRepository,
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idService: IdService,
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@Inject(DI.usersRepository)
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private usersRepository: UsersRepository,
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private cacheService: CacheService,
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loggerService: LoggerService,
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) {
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this.#logger = loggerService.getLogger('oauth');
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const grantCodeCache = new MemoryKVCache<{
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clientId: string,
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userId: string,
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redirectUri: string,
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codeChallenge: string,
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scopes: string[],
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// fields to prevent multiple code use
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grantedToken?: string,
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revoked?: boolean,
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used?: boolean,
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}>(1000 * 60 * 5); // expires after 5m
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// https://datatracker.ietf.org/doc/html/draft-ietf-oauth-security-topics
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// "Authorization servers MUST support PKCE [RFC7636]."
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this.#server.grant(oauth2Pkce.extensions());
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this.#server.grant(oauth2orize.grant.code({
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modes: getQueryMode(config.url),
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}, (client, redirectUri, token, ares, areq, locals, done) => {
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(async (): Promise<OmitFirstElement<Parameters<typeof done>>> => {
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this.#logger.info(`Checking the user before sending authorization code to ${client.id}`);
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if (!token) {
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throw new AuthorizationError('No user', 'invalid_request');
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}
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const user = await this.cacheService.localUserByNativeTokenCache.fetch(token,
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() => this.usersRepository.findOneBy({ token }) as Promise<MiLocalUser | null>);
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if (!user) {
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throw new AuthorizationError('No such user', 'invalid_request');
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}
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this.#logger.info(`Sending authorization code on behalf of user ${user.id} to ${client.id} through ${redirectUri}, with scope: [${areq.scope}]`);
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const code = secureRndstr(128);
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grantCodeCache.set(code, {
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clientId: client.id,
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userId: user.id,
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redirectUri,
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codeChallenge: (areq as OAuthParsedRequest).codeChallenge,
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scopes: areq.scope,
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});
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return [code];
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})().then(args => done(null, ...args), err => done(err));
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}));
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this.#server.exchange(oauth2orize.exchange.authorizationCode((client, code, redirectUri, body, authInfo, done) => {
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(async (): Promise<OmitFirstElement<Parameters<typeof done>> | undefined> => {
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this.#logger.info('Checking the received authorization code for the exchange');
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const granted = grantCodeCache.get(code);
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if (!granted) {
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return;
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}
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// https://datatracker.ietf.org/doc/html/rfc6749.html#section-4.1.2
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// "If an authorization code is used more than once, the authorization server
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// MUST deny the request and SHOULD revoke (when possible) all tokens
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// previously issued based on that authorization code."
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if (granted.used) {
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this.#logger.info(`Detected multiple code use from ${granted.clientId} for user ${granted.userId}. Revoking the code.`);
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grantCodeCache.delete(code);
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granted.revoked = true;
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if (granted.grantedToken) {
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await accessTokensRepository.delete({ token: granted.grantedToken });
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}
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return;
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}
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granted.used = true;
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// https://datatracker.ietf.org/doc/html/rfc6749.html#section-4.1.3
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if (body.client_id !== granted.clientId) return;
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if (redirectUri !== granted.redirectUri) return;
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// https://datatracker.ietf.org/doc/html/rfc7636.html#section-4.6
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if (!body.code_verifier) return;
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if (!(await verifyChallenge(body.code_verifier as string, granted.codeChallenge))) return;
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const accessToken = secureRndstr(128);
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const now = new Date();
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// NOTE: we don't have a setup for automatic token expiration
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await accessTokensRepository.insert({
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id: idService.genId(),
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createdAt: now,
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lastUsedAt: now,
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userId: granted.userId,
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token: accessToken,
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hash: accessToken,
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name: granted.clientId,
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permission: granted.scopes,
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});
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if (granted.revoked) {
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this.#logger.info('Canceling the token as the authorization code was revoked in parallel during the process.');
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await accessTokensRepository.delete({ token: accessToken });
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return;
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}
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granted.grantedToken = accessToken;
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this.#logger.info(`Generated access token for ${granted.clientId} for user ${granted.userId}, with scope: [${granted.scopes}]`);
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return [accessToken, undefined, { scope: granted.scopes.join(' ') }];
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})().then(args => done(null, ...args ?? []), err => done(err));
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}));
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}
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/* @Inject(DI.config)
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private config: Config, */
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) { }
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@bindThis
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public async createServer(fastify: FastifyInstance): Promise<void> {
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// https://datatracker.ietf.org/doc/html/rfc8414.html
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// https://indieauth.spec.indieweb.org/#indieauth-server-metadata
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fastify.get('/.well-known/oauth-authorization-server', async (_request, reply) => {
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/* fastify.get('/.well-known/oauth-authorization-server', async (_request, reply) => {
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reply.send({
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issuer: this.config.url,
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authorization_endpoint: new URL('/oauth/authorize', this.config.url),
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@ -367,123 +36,68 @@ export class OAuth2ProviderService {
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code_challenge_methods_supported: ['S256'],
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authorization_response_iss_parameter_supported: true,
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});
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});
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}); */
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fastify.get('/oauth/authorize', async (request, reply) => {
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const oauth2 = (request.raw as MiddlewareRequest).oauth2;
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if (!oauth2) {
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throw new Error('Unexpected lack of authorization information');
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const query: any = request.query;
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let param = "mastodon=true";
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if (query.state) param += `&state=${query.state}`;
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if (query.redirect_uri) param += `&redirect_uri=${query.redirect_uri}`;
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const client = query.client_id ? query.client_id : "";
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reply.redirect(
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`${atob(client)}?${param}`,
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);
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});
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fastify.post('/oauth/token', async (request, reply) => {
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const body: any = request.body || request.query;
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if (body.grant_type === "client_credentials") {
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const ret = {
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access_token: uuid(),
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token_type: "Bearer",
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scope: "read",
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created_at: Math.floor(new Date().getTime() / 1000),
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};
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reply.send(ret);
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}
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let client_id: any = body.client_id;
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const BASE_URL = `${request.protocol}://${request.hostname}`;
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const generator = (megalodon as any).default;
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const client = generator(BASE_URL, null) as MegalodonInterface;
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let m = null;
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let token = null;
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if (body.code) {
|
||||
//m = body.code.match(/^([a-zA-Z0-9]{8})([a-zA-Z0-9]{4})([a-zA-Z0-9]{4})([a-zA-Z0-9]{4})([a-zA-Z0-9]{12})/);
|
||||
//if (!m.length) {
|
||||
// ctx.body = { error: "Invalid code" };
|
||||
// return;
|
||||
//}
|
||||
//token = `${m[1]}-${m[2]}-${m[3]}-${m[4]}-${m[5]}`
|
||||
//console.log(body.code, token);
|
||||
token = body.code;
|
||||
}
|
||||
if (client_id instanceof Array) {
|
||||
client_id = client_id.toString();
|
||||
} else if (!client_id) {
|
||||
client_id = null;
|
||||
}
|
||||
try {
|
||||
const atData = await client.fetchAccessToken(
|
||||
client_id,
|
||||
body.client_secret,
|
||||
token ? token : "",
|
||||
);
|
||||
const ret = {
|
||||
access_token: atData.accessToken,
|
||||
token_type: "Bearer",
|
||||
scope: body.scope || "read write follow push",
|
||||
created_at: Math.floor(new Date().getTime() / 1000),
|
||||
};
|
||||
reply.send(ret);
|
||||
} catch (err: any) {
|
||||
/* console.error(err); */
|
||||
reply.code(401).send(err.response);
|
||||
}
|
||||
|
||||
this.#logger.info(`Rendering authorization page for "${oauth2.client.name}"`);
|
||||
|
||||
reply.header('Cache-Control', 'no-store');
|
||||
return await reply.view('oauth', {
|
||||
transactionId: oauth2.transactionID,
|
||||
clientName: oauth2.client.name,
|
||||
scope: oauth2.req.scope.join(' '),
|
||||
});
|
||||
});
|
||||
fastify.post('/oauth/decision', async () => { });
|
||||
fastify.post('/oauth/token', async () => { });
|
||||
|
||||
fastify.register(fastifyView, {
|
||||
root: fileURLToPath(new URL('../web/views', import.meta.url)),
|
||||
engine: { pug },
|
||||
defaultContext: {
|
||||
version: this.config.version,
|
||||
config: this.config,
|
||||
},
|
||||
});
|
||||
|
||||
await fastify.register(fastifyExpress);
|
||||
fastify.use('/oauth/authorize', this.#server.authorize(((areq, done) => {
|
||||
(async (): Promise<Parameters<typeof done>> => {
|
||||
// This should return client/redirectURI AND the error, or
|
||||
// the handler can't send error to the redirection URI
|
||||
|
||||
const { codeChallenge, codeChallengeMethod, clientID, redirectURI, scope } = areq as OAuthParsedRequest;
|
||||
|
||||
this.#logger.info(`Validating authorization parameters, with client_id: ${clientID}, redirect_uri: ${redirectURI}, scope: ${scope}`);
|
||||
|
||||
const clientUrl = validateClientId(clientID);
|
||||
|
||||
// https://indieauth.spec.indieweb.org/#client-information-discovery
|
||||
// "the server may want to resolve the domain name first and avoid fetching the document
|
||||
// if the IP address is within the loopback range defined by [RFC5735]
|
||||
// or any other implementation-specific internal IP address."
|
||||
if (process.env.NODE_ENV !== 'test' || process.env.MISSKEY_TEST_CHECK_IP_RANGE === '1') {
|
||||
const lookup = await dns.lookup(clientUrl.hostname);
|
||||
if (ipaddr.parse(lookup.address).range() !== 'unicast') {
|
||||
throw new AuthorizationError('client_id resolves to disallowed IP range.', 'invalid_request');
|
||||
}
|
||||
}
|
||||
|
||||
// Find client information from the remote.
|
||||
const clientInfo = await discoverClientInformation(this.#logger, this.httpRequestService, clientUrl.href);
|
||||
|
||||
// Require the redirect URI to be included in an explicit list, per
|
||||
// https://datatracker.ietf.org/doc/html/draft-ietf-oauth-security-topics#section-4.1.3
|
||||
/* if (!clientInfo.redirectUris.includes(redirectURI)) {
|
||||
throw new AuthorizationError('Invalid redirect_uri', 'invalid_request');
|
||||
} */
|
||||
|
||||
try {
|
||||
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;
|
||||
|
||||
// Require PKCE parameters.
|
||||
// Recommended by https://indieauth.spec.indieweb.org/#authorization-request, but also prevents downgrade attack:
|
||||
// https://datatracker.ietf.org/doc/html/draft-ietf-oauth-security-topics#name-pkce-downgrade-attack
|
||||
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');
|
||||
}
|
||||
} catch (err) {
|
||||
return [err as Error, clientInfo, redirectURI];
|
||||
}
|
||||
|
||||
return [null, clientInfo, redirectURI];
|
||||
})().then(args => done(...args), err => done(err));
|
||||
}) as ValidateFunctionArity2));
|
||||
fastify.use('/oauth/authorize', this.#server.errorHandler({
|
||||
mode: 'indirect',
|
||||
modes: getQueryMode(this.config.url),
|
||||
}));
|
||||
fastify.use('/oauth/authorize', this.#server.errorHandler());
|
||||
|
||||
fastify.use('/oauth/decision', bodyParser.urlencoded({ extended: false }));
|
||||
fastify.use('/oauth/decision', this.#server.decision((req, done) => {
|
||||
const { body } = req as OAuth2DecisionRequest;
|
||||
this.#logger.info(`Received the decision. Cancel: ${!!body.cancel}`);
|
||||
req.user = body.login_token;
|
||||
done(null, undefined);
|
||||
}));
|
||||
fastify.use('/oauth/decision', this.#server.errorHandler());
|
||||
|
||||
// Clients may use JSON or urlencoded
|
||||
fastify.use('/oauth/token', bodyParser.urlencoded({ extended: false }));
|
||||
fastify.use('/oauth/token', bodyParser.json({ strict: true }));
|
||||
fastify.use('/oauth/token', this.#server.token());
|
||||
fastify.use('/oauth/token', this.#server.errorHandler());
|
||||
|
||||
// Return 404 for any unknown paths under /oauth so that clients can know
|
||||
// whether a certain endpoint is supported or not.
|
||||
fastify.all('/oauth/*', async (_request, reply) => {
|
||||
reply.code(404);
|
||||
reply.send({
|
||||
error: {
|
||||
message: 'Unknown OAuth endpoint.',
|
||||
code: 'UNKNOWN_OAUTH_ENDPOINT',
|
||||
id: 'aa49e620-26cb-4e28-aad6-8cbcb58db147',
|
||||
kind: 'client',
|
||||
},
|
||||
});
|
||||
});
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -389,6 +389,9 @@ importers:
|
|||
ulid:
|
||||
specifier: 2.3.0
|
||||
version: 2.3.0
|
||||
uuid:
|
||||
specifier: ^9.0.1
|
||||
version: 9.0.1
|
||||
vary:
|
||||
specifier: 1.1.2
|
||||
version: 1.1.2
|
||||
|
|
@ -607,6 +610,9 @@ importers:
|
|||
'@types/tmp':
|
||||
specifier: 0.2.4
|
||||
version: 0.2.4
|
||||
'@types/uuid':
|
||||
specifier: ^9.0.4
|
||||
version: 9.0.4
|
||||
'@types/vary':
|
||||
specifier: 1.1.0
|
||||
version: 1.1.0
|
||||
|
|
@ -19184,7 +19190,7 @@ packages:
|
|||
reflect-metadata: 0.1.13
|
||||
sha.js: 2.4.11
|
||||
tslib: 2.5.3
|
||||
uuid: 9.0.0
|
||||
uuid: 9.0.1
|
||||
yargs: 17.6.2
|
||||
transitivePeerDependencies:
|
||||
- supports-color
|
||||
|
|
@ -19453,10 +19459,6 @@ packages:
|
|||
resolution: {integrity: sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==}
|
||||
hasBin: true
|
||||
|
||||
/uuid@9.0.0:
|
||||
resolution: {integrity: sha512-MXcSTerfPa4uqyzStbRoTgt5XIe3x5+42+q1sDuy3R5MDk66URdLMOZe5aPX/SQd+kuYAh0FdP/pO28IkQyTeg==}
|
||||
dev: false
|
||||
|
||||
/uuid@9.0.1:
|
||||
resolution: {integrity: sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==}
|
||||
hasBin: true
|
||||
|
|
|
|||
Loading…
Reference in a new issue