mirror of
https://git.joinsharkey.org/Sharkey/Sharkey.git
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258 lines
7.4 KiB
TypeScript
258 lines
7.4 KiB
TypeScript
import { performance } from 'perf_hooks';
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import { Inject, Injectable } from '@nestjs/common';
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import { DI } from '@/di-symbols.js';
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import { getIpHash } from '@/misc/get-ip-hash.js';
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import type { CacheableLocalUser, User } from '@/models/entities/User.js';
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import type { AccessToken } from '@/models/entities/AccessToken.js';
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import type Logger from '@/logger.js';
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import type { UserIpsRepository } from '@/models/index.js';
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import { MetaService } from '@/core/MetaService.js';
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import { ApiError } from './error.js';
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import { RateLimiterService } from './RateLimiterService.js';
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import { ApiLoggerService } from './ApiLoggerService.js';
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import { AuthenticateService, AuthenticationError } from './AuthenticateService.js';
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import type { OnApplicationShutdown } from '@nestjs/common';
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import type { IEndpointMeta, IEndpoint } from './endpoints.js';
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import type Koa from 'koa';
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const accessDenied = {
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message: 'Access denied.',
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code: 'ACCESS_DENIED',
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id: '56f35758-7dd5-468b-8439-5d6fb8ec9b8e',
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};
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@Injectable()
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export class ApiCallService implements OnApplicationShutdown {
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private logger: Logger;
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private userIpHistories: Map<User['id'], Set<string>>;
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private userIpHistoriesClearIntervalId: NodeJS.Timer;
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constructor(
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@Inject(DI.userIpsRepository)
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private userIpsRepository: UserIpsRepository,
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private metaService: MetaService,
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private authenticateService: AuthenticateService,
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private rateLimiterService: RateLimiterService,
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private apiLoggerService: ApiLoggerService,
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) {
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this.logger = this.apiLoggerService.logger;
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this.userIpHistories = new Map<User['id'], Set<string>>();
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this.userIpHistoriesClearIntervalId = setInterval(() => {
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this.userIpHistories.clear();
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}, 1000 * 60 * 60);
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}
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public handleRequest(endpoint: IEndpoint, exec: any, ctx: Koa.Context) {
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return new Promise<void>((res) => {
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const body = ctx.is('multipart/form-data')
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? (ctx.request as any).body
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: ctx.method === 'GET'
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? ctx.query
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: ctx.request.body;
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const reply = (x?: any, y?: ApiError) => {
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if (x == null) {
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ctx.status = 204;
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} else if (typeof x === 'number' && y) {
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ctx.status = x;
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ctx.body = {
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error: {
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message: y!.message,
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code: y!.code,
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id: y!.id,
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kind: y!.kind,
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...(y!.info ? { info: y!.info } : {}),
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},
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};
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} else {
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// 文字列を返す場合は、JSON.stringify通さないとJSONと認識されない
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ctx.body = typeof x === 'string' ? JSON.stringify(x) : x;
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}
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res();
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};
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// Authentication
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this.authenticateService.authenticate(body['i']).then(([user, app]) => {
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// API invoking
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this.call(endpoint, exec, user, app, body, ctx).then((res: any) => {
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if (ctx.method === 'GET' && endpoint.meta.cacheSec && !body['i'] && !user) {
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ctx.set('Cache-Control', `public, max-age=${endpoint.meta.cacheSec}`);
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}
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reply(res);
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}).catch((e: ApiError) => {
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reply(e.httpStatusCode ? e.httpStatusCode : e.kind === 'client' ? 400 : 500, e);
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});
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// Log IP
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if (user) {
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this.metaService.fetch().then(meta => {
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if (!meta.enableIpLogging) return;
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const ip = ctx.ip;
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const ips = this.userIpHistories.get(user.id);
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if (ips == null || !ips.has(ip)) {
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if (ips == null) {
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this.userIpHistories.set(user.id, new Set([ip]));
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} else {
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ips.add(ip);
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}
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try {
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this.userIpsRepository.createQueryBuilder().insert().values({
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createdAt: new Date(),
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userId: user.id,
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ip: ip,
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}).orIgnore(true).execute();
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} catch {
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}
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}
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});
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}
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}).catch(e => {
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if (e instanceof AuthenticationError) {
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reply(403, new ApiError({
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message: 'Authentication failed. Please ensure your token is correct.',
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code: 'AUTHENTICATION_FAILED',
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id: 'b0a7f5f8-dc2f-4171-b91f-de88ad238e14',
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}));
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} else {
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reply(500, new ApiError());
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}
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});
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});
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}
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private async call(
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ep: IEndpoint,
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exec: any,
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user: CacheableLocalUser | null | undefined,
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token: AccessToken | null | undefined,
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data: any,
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ctx?: Koa.Context,
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) {
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const isSecure = user != null && token == null;
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const isModerator = user != null && (user.isModerator || user.isAdmin);
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if (ep.meta.secure && !isSecure) {
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throw new ApiError(accessDenied);
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}
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if (ep.meta.limit) {
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// koa will automatically load the `X-Forwarded-For` header if `proxy: true` is configured in the app.
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let limitActor: string;
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if (user) {
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limitActor = user.id;
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} else {
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limitActor = getIpHash(ctx!.ip);
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}
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const limit = Object.assign({}, ep.meta.limit);
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if (!limit.key) {
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limit.key = ep.name;
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}
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// Rate limit
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await this.rateLimiterService.limit(limit as IEndpointMeta['limit'] & { key: NonNullable<string> }, limitActor).catch(e => {
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throw new ApiError({
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message: 'Rate limit exceeded. Please try again later.',
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code: 'RATE_LIMIT_EXCEEDED',
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id: 'd5826d14-3982-4d2e-8011-b9e9f02499ef',
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httpStatusCode: 429,
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});
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});
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}
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if (ep.meta.requireCredential && user == null) {
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throw new ApiError({
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message: 'Credential required.',
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code: 'CREDENTIAL_REQUIRED',
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id: '1384574d-a912-4b81-8601-c7b1c4085df1',
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httpStatusCode: 401,
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});
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}
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if (ep.meta.requireCredential && user!.isSuspended) {
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throw new ApiError({
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message: 'Your account has been suspended.',
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code: 'YOUR_ACCOUNT_SUSPENDED',
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id: 'a8c724b3-6e9c-4b46-b1a8-bc3ed6258370',
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httpStatusCode: 403,
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});
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}
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if (ep.meta.requireAdmin && !user!.isAdmin) {
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throw new ApiError(accessDenied, { reason: 'You are not the admin.' });
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}
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if (ep.meta.requireModerator && !isModerator) {
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throw new ApiError(accessDenied, { reason: 'You are not a moderator.' });
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}
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if (token && ep.meta.kind && !token.permission.some(p => p === ep.meta.kind)) {
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throw new ApiError({
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message: 'Your app does not have the necessary permissions to use this endpoint.',
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code: 'PERMISSION_DENIED',
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id: '1370e5b7-d4eb-4566-bb1d-7748ee6a1838',
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});
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}
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// Cast non JSON input
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if ((ep.meta.requireFile || ctx?.method === 'GET') && ep.params.properties) {
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for (const k of Object.keys(ep.params.properties)) {
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const param = ep.params.properties![k];
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if (['boolean', 'number', 'integer'].includes(param.type ?? '') && typeof data[k] === 'string') {
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try {
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data[k] = JSON.parse(data[k]);
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} catch (e) {
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throw new ApiError({
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message: 'Invalid param.',
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code: 'INVALID_PARAM',
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id: '0b5f1631-7c1a-41a6-b399-cce335f34d85',
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}, {
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param: k,
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reason: `cannot cast to ${param.type}`,
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});
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}
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}
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}
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}
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// API invoking
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const before = performance.now();
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return await exec(data, user, token, ctx?.file, ctx?.ip, ctx?.headers).catch((err: Error) => {
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if (err instanceof ApiError) {
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throw err;
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} else {
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this.logger.error(`Internal error occurred in ${ep.name}: ${err.message}`, {
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ep: ep.name,
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ps: data,
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e: {
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message: err.message,
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code: err.name,
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stack: err.stack,
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},
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});
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console.error(err);
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throw new ApiError(null, {
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e: {
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message: err.message,
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code: err.name,
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stack: err.stack,
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},
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});
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}
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}).finally(() => {
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const after = performance.now();
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const time = after - before;
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if (time > 1000) {
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this.logger.warn(`SLOW API CALL DETECTED: ${ep.name} (${time}ms)`);
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}
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});
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}
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public onApplicationShutdown(signal?: string | undefined) {
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clearInterval(this.userIpHistoriesClearIntervalId);
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}
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}
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