mirror of
https://github.com/misskey-dev/misskey
synced 2024-05-29 14:49:47 +02:00
458 lines
14 KiB
TypeScript
458 lines
14 KiB
TypeScript
import * as fs from 'node:fs';
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import { fileURLToPath } from 'node:url';
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import { dirname } from 'node:path';
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import { Inject, Injectable } from '@nestjs/common';
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import fastifyStatic from '@fastify/static';
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import rename from 'rename';
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import type { Config } from '@/config.js';
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import type { DriveFile, DriveFilesRepository } from '@/models/index.js';
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import { DI } from '@/di-symbols.js';
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import { createTemp } from '@/misc/create-temp.js';
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import { FILE_TYPE_BROWSERSAFE } from '@/const.js';
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import { StatusError } from '@/misc/status-error.js';
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import type Logger from '@/logger.js';
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import { DownloadService } from '@/core/DownloadService.js';
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import { IImageStreamable, ImageProcessingService, webpDefault } from '@/core/ImageProcessingService.js';
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import { VideoProcessingService } from '@/core/VideoProcessingService.js';
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import { InternalStorageService } from '@/core/InternalStorageService.js';
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import { contentDisposition } from '@/misc/content-disposition.js';
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import { FileInfoService } from '@/core/FileInfoService.js';
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import { LoggerService } from '@/core/LoggerService.js';
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import { bindThis } from '@/decorators.js';
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import type { FastifyInstance, FastifyRequest, FastifyReply, FastifyPluginOptions } from 'fastify';
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import { isMimeImage } from '@/misc/is-mime-image.js';
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import sharp from 'sharp';
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const _filename = fileURLToPath(import.meta.url);
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const _dirname = dirname(_filename);
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const assets = `${_dirname}/../../server/file/assets/`;
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@Injectable()
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export class FileServerService {
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private 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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@Inject(DI.driveFilesRepository)
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private driveFilesRepository: DriveFilesRepository,
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private fileInfoService: FileInfoService,
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private downloadService: DownloadService,
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private imageProcessingService: ImageProcessingService,
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private videoProcessingService: VideoProcessingService,
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private internalStorageService: InternalStorageService,
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private loggerService: LoggerService,
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) {
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this.logger = this.loggerService.getLogger('server', 'gray', false);
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//this.createServer = this.createServer.bind(this);
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}
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@bindThis
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public commonReadableHandlerGenerator(reply: FastifyReply) {
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return (err: Error): void => {
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this.logger.error(err);
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reply.code(500);
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reply.header('Cache-Control', 'max-age=300');
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};
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}
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@bindThis
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public createServer(fastify: FastifyInstance, options: FastifyPluginOptions, done: (err?: Error) => void) {
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fastify.addHook('onRequest', (request, reply, done) => {
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reply.header('Content-Security-Policy', 'default-src \'none\'; img-src \'self\'; media-src \'self\'; style-src \'unsafe-inline\'');
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done();
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});
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fastify.register(fastifyStatic, {
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root: _dirname,
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serve: false,
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});
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fastify.get('/files/app-default.jpg', (request, reply) => {
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const file = fs.createReadStream(`${_dirname}/assets/dummy.png`);
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reply.header('Content-Type', 'image/jpeg');
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reply.header('Cache-Control', 'max-age=31536000, immutable');
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return reply.send(file);
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});
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fastify.get<{ Params: { key: string; } }>('/files/:key', async (request, reply) => {
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return await this.sendDriveFile(request, reply)
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.catch(err => this.errorHandler(request, reply, err));
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});
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fastify.get<{ Params: { key: string; } }>('/files/:key/*', async (request, reply) => {
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return await this.sendDriveFile(request, reply)
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.catch(err => this.errorHandler(request, reply, err));
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});
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fastify.get<{
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Params: { url: string; };
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Querystring: { url?: string; };
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}>('/proxy/:url*', async (request, reply) => {
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return await this.proxyHandler(request, reply)
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.catch(err => this.errorHandler(request, reply, err));
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});
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done();
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}
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@bindThis
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private async errorHandler(request: FastifyRequest<{ Params?: { [x: string]: any }; Querystring?: { [x: string]: any }; }>, reply: FastifyReply, err?: any) {
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this.logger.error(`${err}`);
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reply.header('Cache-Control', 'max-age=300');
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if (request.query && 'fallback' in request.query) {
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return reply.sendFile('/dummy.png', assets);
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}
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if (err instanceof StatusError && (err.statusCode === 302 || err.isClientError)) {
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reply.code(err.statusCode);
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return;
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}
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reply.code(500);
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return;
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}
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@bindThis
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private async sendDriveFile(request: FastifyRequest<{ Params: { key: string; } }>, reply: FastifyReply) {
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const key = request.params.key;
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const file = await this.getFileFromKey(key).then();
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if (file === '404') {
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reply.code(404);
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reply.header('Cache-Control', 'max-age=86400');
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return reply.sendFile('/dummy.png', assets);
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}
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if (file === '204') {
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reply.code(204);
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reply.header('Cache-Control', 'max-age=86400');
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return;
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}
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try {
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if (file.state === 'remote') {
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let image: IImageStreamable | null = null;
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if (file.fileRole === 'thumbnail') {
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if (isMimeImage(file.mime, 'sharp-convertible-image')) {
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reply.header('Cache-Control', 'max-age=31536000, immutable');
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const url = new URL(`${this.config.mediaProxy}/static.webp`);
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url.searchParams.set('url', file.url);
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url.searchParams.set('static', '1');
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file.cleanup();
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return await reply.redirect(301, url.toString());
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} else if (file.mime.startsWith('video/')) {
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const externalThumbnail = this.videoProcessingService.getExternalVideoThumbnailUrl(file.url);
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if (externalThumbnail) {
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file.cleanup();
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return await reply.redirect(301, externalThumbnail);
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}
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image = await this.videoProcessingService.generateVideoThumbnail(file.path);
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}
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}
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if (file.fileRole === 'webpublic') {
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if (['image/svg+xml'].includes(file.mime)) {
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reply.header('Cache-Control', 'max-age=31536000, immutable');
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const url = new URL(`${this.config.mediaProxy}/svg.webp`);
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url.searchParams.set('url', file.url);
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file.cleanup();
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return await reply.redirect(301, url.toString());
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}
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}
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if (!image) {
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image = {
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data: fs.createReadStream(file.path),
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ext: file.ext,
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type: file.mime,
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};
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}
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if ('pipe' in image.data && typeof image.data.pipe === 'function') {
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// image.dataがstreamなら、stream終了後にcleanup
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image.data.on('end', file.cleanup);
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image.data.on('close', file.cleanup);
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} else {
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// image.dataがstreamでないなら直ちにcleanup
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file.cleanup();
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}
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reply.header('Content-Type', FILE_TYPE_BROWSERSAFE.includes(image.type) ? image.type : 'application/octet-stream');
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return image.data;
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}
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if (file.fileRole !== 'original') {
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const filename = rename(file.file.name, {
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suffix: file.fileRole === 'thumbnail' ? '-thumb' : '-web',
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extname: file.ext ? `.${file.ext}` : undefined,
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}).toString();
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reply.header('Content-Type', FILE_TYPE_BROWSERSAFE.includes(file.mime) ? file.mime : 'application/octet-stream');
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reply.header('Cache-Control', 'max-age=31536000, immutable');
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reply.header('Content-Disposition', contentDisposition('inline', filename));
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return fs.createReadStream(file.path);
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} else {
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const stream = fs.createReadStream(file.path);
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stream.on('error', this.commonReadableHandlerGenerator(reply));
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reply.header('Content-Type', FILE_TYPE_BROWSERSAFE.includes(file.file.type) ? file.file.type : 'application/octet-stream');
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reply.header('Cache-Control', 'max-age=31536000, immutable');
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reply.header('Content-Disposition', contentDisposition('inline', file.file.name));
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return stream;
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}
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} catch (e) {
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if ('cleanup' in file) file.cleanup();
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throw e;
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}
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}
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@bindThis
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private async proxyHandler(request: FastifyRequest<{ Params: { url: string; }; Querystring: { url?: string; }; }>, reply: FastifyReply) {
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const url = 'url' in request.query ? request.query.url : 'https://' + request.params.url;
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if (typeof url !== 'string') {
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reply.code(400);
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return;
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}
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if (this.config.externalMediaProxyEnabled) {
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// 外部のメディアプロキシが有効なら、そちらにリダイレクト
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reply.header('Cache-Control', 'public, max-age=259200'); // 3 days
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const url = new URL(`${this.config.mediaProxy}/${request.params.url || ''}`);
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for (const [key, value] of Object.entries(request.query)) {
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url.searchParams.append(key, value);
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}
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return await reply.redirect(
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301,
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url.toString(),
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);
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}
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// Create temp file
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const file = await this.getStreamAndTypeFromUrl(url);
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if (file === '404') {
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reply.code(404);
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reply.header('Cache-Control', 'max-age=86400');
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return reply.sendFile('/dummy.png', assets);
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}
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if (file === '204') {
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reply.code(204);
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reply.header('Cache-Control', 'max-age=86400');
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return;
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}
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try {
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const isConvertibleImage = isMimeImage(file.mime, 'sharp-convertible-image');
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const isAnimationConvertibleImage = isMimeImage(file.mime, 'sharp-animation-convertible-image');
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if (
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'emoji' in request.query ||
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'avatar' in request.query ||
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'static' in request.query ||
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'preview' in request.query ||
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'badge' in request.query
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) {
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if (!isConvertibleImage) {
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// 画像でないなら404でお茶を濁す
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throw new StatusError('Unexpected mime', 404);
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}
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}
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let image: IImageStreamable | null = null;
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if ('emoji' in request.query || 'avatar' in request.query) {
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if (!isAnimationConvertibleImage && !('static' in request.query)) {
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image = {
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data: fs.createReadStream(file.path),
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ext: file.ext,
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type: file.mime,
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};
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} else {
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const data = sharp(file.path, { animated: !('static' in request.query) })
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.resize({
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height: 'emoji' in request.query ? 128 : 320,
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withoutEnlargement: true,
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})
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.webp(webpDefault);
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image = {
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data,
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ext: 'webp',
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type: 'image/webp',
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};
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}
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} else if ('static' in request.query) {
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image = this.imageProcessingService.convertToWebpStream(file.path, 498, 280);
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} else if ('preview' in request.query) {
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image = this.imageProcessingService.convertToWebpStream(file.path, 200, 200);
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} else if ('badge' in request.query) {
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const mask = sharp(file.path)
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.resize(96, 96, {
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fit: 'inside',
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withoutEnlargement: false,
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})
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.greyscale()
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.normalise()
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.linear(1.75, -(128 * 1.75) + 128) // 1.75x contrast
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.flatten({ background: '#000' })
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.toColorspace('b-w');
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const stats = await mask.clone().stats();
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if (stats.entropy < 0.1) {
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// エントロピーがあまりない場合は404にする
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throw new StatusError('Skip to provide badge', 404);
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}
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const data = sharp({
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create: { width: 96, height: 96, channels: 4, background: { r: 0, g: 0, b: 0, alpha: 0 } },
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})
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.pipelineColorspace('b-w')
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.boolean(await mask.png().toBuffer(), 'eor');
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image = {
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data: await data.png().toBuffer(),
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ext: 'png',
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type: 'image/png',
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};
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} else if (file.mime === 'image/svg+xml') {
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image = this.imageProcessingService.convertToWebpStream(file.path, 2048, 2048);
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} else if (!file.mime.startsWith('image/') || !FILE_TYPE_BROWSERSAFE.includes(file.mime)) {
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throw new StatusError('Rejected type', 403, 'Rejected type');
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}
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if (!image) {
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image = {
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data: fs.createReadStream(file.path),
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ext: file.ext,
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type: file.mime,
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};
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}
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if ('cleanup' in file) {
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if ('pipe' in image.data && typeof image.data.pipe === 'function') {
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// image.dataがstreamなら、stream終了後にcleanup
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image.data.on('end', file.cleanup);
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image.data.on('close', file.cleanup);
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} else {
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// image.dataがstreamでないなら直ちにcleanup
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file.cleanup();
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}
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}
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reply.header('Content-Type', image.type);
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reply.header('Cache-Control', 'max-age=31536000, immutable');
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return image.data;
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} catch (e) {
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if ('cleanup' in file) file.cleanup();
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throw e;
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}
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}
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@bindThis
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private async getStreamAndTypeFromUrl(url: string): Promise<
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{ state: 'remote'; fileRole?: 'thumbnail' | 'webpublic' | 'original'; file?: DriveFile; mime: string; ext: string | null; path: string; cleanup: () => void; }
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| { state: 'stored_internal'; fileRole: 'thumbnail' | 'webpublic' | 'original'; file: DriveFile; mime: string; ext: string | null; path: string; }
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| '404'
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| '204'
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> {
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if (url.startsWith(`${this.config.url}/files/`)) {
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const key = url.replace(`${this.config.url}/files/`, '').split('/').shift();
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if (!key) throw new StatusError('Invalid File Key', 400, 'Invalid File Key');
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return await this.getFileFromKey(key);
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}
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return await this.downloadAndDetectTypeFromUrl(url);
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}
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@bindThis
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private async downloadAndDetectTypeFromUrl(url: string): Promise<
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{ state: 'remote' ; mime: string; ext: string | null; path: string; cleanup: () => void; }
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> {
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const [path, cleanup] = await createTemp();
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try {
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await this.downloadService.downloadUrl(url, path);
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const { mime, ext } = await this.fileInfoService.detectType(path);
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return {
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state: 'remote',
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mime, ext,
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path, cleanup,
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};
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} catch (e) {
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cleanup();
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throw e;
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}
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}
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@bindThis
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private async getFileFromKey(key: string): Promise<
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{ state: 'remote'; fileRole: 'thumbnail' | 'webpublic' | 'original'; file: DriveFile; url: string; mime: string; ext: string | null; path: string; cleanup: () => void; }
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| { state: 'stored_internal'; fileRole: 'thumbnail' | 'webpublic' | 'original'; file: DriveFile; mime: string; ext: string | null; path: string; }
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| '404'
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| '204'
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> {
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// Fetch drive file
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const file = await this.driveFilesRepository.createQueryBuilder('file')
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.where('file.accessKey = :accessKey', { accessKey: key })
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.orWhere('file.thumbnailAccessKey = :thumbnailAccessKey', { thumbnailAccessKey: key })
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.orWhere('file.webpublicAccessKey = :webpublicAccessKey', { webpublicAccessKey: key })
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.getOne();
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if (file == null) return '404';
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const isThumbnail = file.thumbnailAccessKey === key;
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const isWebpublic = file.webpublicAccessKey === key;
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if (!file.storedInternal) {
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if (!(file.isLink && file.uri)) return '204';
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const result = await this.downloadAndDetectTypeFromUrl(file.uri);
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return {
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...result,
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url: file.uri,
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fileRole: isThumbnail ? 'thumbnail' : isWebpublic ? 'webpublic' : 'original',
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file,
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};
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}
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const path = this.internalStorageService.resolvePath(key);
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if (isThumbnail || isWebpublic) {
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const { mime, ext } = await this.fileInfoService.detectType(path);
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return {
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state: 'stored_internal',
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fileRole: isThumbnail ? 'thumbnail' : 'webpublic',
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file,
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mime, ext,
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path,
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};
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}
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return {
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state: 'stored_internal',
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fileRole: 'original',
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file,
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mime: file.type,
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ext: null,
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path,
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};
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}
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}
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