307 lines
7.6 KiB
TypeScript
307 lines
7.6 KiB
TypeScript
import { Buffer } from 'buffer';
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import * as fs from 'fs';
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import * as tmp from 'tmp';
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import * as stream from 'stream';
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import * as mongodb from 'mongodb';
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import * as crypto from 'crypto';
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import * as _gm from 'gm';
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import * as debug from 'debug';
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import fileType = require('file-type');
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import prominence = require('prominence');
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import DriveFile, { getGridFSBucket } from '../models/drive-file';
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import DriveFolder from '../models/drive-folder';
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import { pack } from '../models/drive-file';
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import event, { publishDriveStream } from '../event';
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import config from '../../conf';
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const gm = _gm.subClass({
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imageMagick: true
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});
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const log = debug('misskey:register-drive-file');
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const tmpFile = (): Promise<string> => new Promise((resolve, reject) => {
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tmp.file((e, path) => {
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if (e) return reject(e);
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resolve(path);
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});
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});
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const addToGridFS = (name: string, readable: stream.Readable, type: string, metadata: any): Promise<any> =>
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getGridFSBucket()
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.then(bucket => new Promise((resolve, reject) => {
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const writeStream = bucket.openUploadStream(name, { contentType: type, metadata });
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writeStream.once('finish', (doc) => { resolve(doc); });
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writeStream.on('error', reject);
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readable.pipe(writeStream);
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}));
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const addFile = async (
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user: any,
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path: string,
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name: string = null,
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comment: string = null,
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folderId: mongodb.ObjectID = null,
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force: boolean = false
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) => {
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log(`registering ${name} (user: ${user.username}, path: ${path})`);
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// Calculate hash, get content type and get file size
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const [hash, [mime, ext], size] = await Promise.all([
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// hash
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((): Promise<string> => new Promise((res, rej) => {
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const readable = fs.createReadStream(path);
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const hash = crypto.createHash('md5');
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const chunks = [];
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readable
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.on('error', rej)
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.pipe(hash)
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.on('error', rej)
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.on('data', (chunk) => chunks.push(chunk))
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.on('end', () => {
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const buffer = Buffer.concat(chunks);
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res(buffer.toString('hex'));
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});
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}))(),
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// mime
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((): Promise<[string, string | null]> => new Promise((res, rej) => {
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const readable = fs.createReadStream(path);
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readable
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.on('error', rej)
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.once('data', (buffer: Buffer) => {
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readable.destroy();
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const type = fileType(buffer);
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if (type) {
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return res([type.mime, type.ext]);
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} else {
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// 種類が同定できなかったら application/octet-stream にする
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return res(['application/octet-stream', null]);
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}
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});
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}))(),
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// size
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((): Promise<number> => new Promise((res, rej) => {
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fs.stat(path, (err, stats) => {
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if (err) return rej(err);
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res(stats.size);
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});
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}))()
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]);
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log(`hash: ${hash}, mime: ${mime}, ext: ${ext}, size: ${size}`);
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// detect name
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const detectedName: string = name || (ext ? `untitled.${ext}` : 'untitled');
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if (!force) {
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// Check if there is a file with the same hash
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const much = await DriveFile.findOne({
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md5: hash,
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'metadata.user_id': user._id
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});
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if (much !== null) {
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log('file with same hash is found');
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return much;
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} else {
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log('file with same hash is not found');
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}
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}
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const [wh, averageColor, folder] = await Promise.all([
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// Width and height (when image)
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(async () => {
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// 画像かどうか
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if (!/^image\/.*$/.test(mime)) {
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return null;
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}
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const imageType = mime.split('/')[1];
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// 画像でもPNGかJPEGかGIFでないならスキップ
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if (imageType != 'png' && imageType != 'jpeg' && imageType != 'gif') {
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return null;
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}
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log('calculate image width and height...');
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// Calculate width and height
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const g = gm(fs.createReadStream(path), name);
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const size = await prominence(g).size();
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log(`image width and height is calculated: ${size.width}, ${size.height}`);
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return [size.width, size.height];
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})(),
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// average color (when image)
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(async () => {
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// 画像かどうか
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if (!/^image\/.*$/.test(mime)) {
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return null;
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}
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const imageType = mime.split('/')[1];
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// 画像でもPNGかJPEGでないならスキップ
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if (imageType != 'png' && imageType != 'jpeg') {
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return null;
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}
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log('calculate average color...');
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const buffer = await prominence(gm(fs.createReadStream(path), name)
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.setFormat('ppm')
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.resize(1, 1)) // 1pxのサイズに縮小して平均色を取得するというハック
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.toBuffer();
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const r = buffer.readUInt8(buffer.length - 3);
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const g = buffer.readUInt8(buffer.length - 2);
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const b = buffer.readUInt8(buffer.length - 1);
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log(`average color is calculated: ${r}, ${g}, ${b}`);
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return [r, g, b];
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})(),
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// folder
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(async () => {
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if (!folderId) {
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return null;
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}
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const driveFolder = await DriveFolder.findOne({
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_id: folderId,
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user_id: user._id
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});
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if (!driveFolder) {
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throw 'folder-not-found';
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}
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return driveFolder;
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})(),
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// usage checker
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(async () => {
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// Calculate drive usage
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const usage = await DriveFile
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.aggregate([{
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$match: { 'metadata.user_id': user._id }
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}, {
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$project: {
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length: true
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}
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}, {
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$group: {
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_id: null,
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usage: { $sum: '$length' }
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}
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}])
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.then((aggregates: any[]) => {
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if (aggregates.length > 0) {
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return aggregates[0].usage;
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}
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return 0;
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});
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log(`drive usage is ${usage}`);
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// If usage limit exceeded
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if (usage + size > user.drive_capacity) {
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throw 'no-free-space';
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}
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})()
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]);
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const readable = fs.createReadStream(path);
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const properties = {};
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if (wh) {
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properties['width'] = wh[0];
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properties['height'] = wh[1];
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}
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if (averageColor) {
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properties['average_color'] = averageColor;
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}
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return addToGridFS(detectedName, readable, mime, {
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user_id: user._id,
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folder_id: folder !== null ? folder._id : null,
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comment: comment,
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properties: properties
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});
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};
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/**
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* Add file to drive
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*
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* @param user User who wish to add file
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* @param file File path or readableStream
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* @param comment Comment
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* @param type File type
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* @param folderId Folder ID
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* @param force If set to true, forcibly upload the file even if there is a file with the same hash.
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* @return Object that represents added file
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*/
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export default (user: any, file: string | stream.Readable, ...args) => new Promise<any>((resolve, reject) => {
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// Get file path
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new Promise((res: (v: [string, boolean]) => void, rej) => {
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if (typeof file === 'string') {
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res([file, false]);
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return;
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}
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if (typeof file === 'object' && typeof file.read === 'function') {
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tmpFile()
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.then(path => {
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const readable: stream.Readable = file;
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const writable = fs.createWriteStream(path);
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readable
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.on('error', rej)
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.on('end', () => {
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res([path, true]);
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})
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.pipe(writable)
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.on('error', rej);
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})
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.catch(rej);
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}
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rej(new Error('un-compatible file.'));
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})
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.then(([path, shouldCleanup]): Promise<any> => new Promise((res, rej) => {
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addFile(user, path, ...args)
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.then(file => {
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res(file);
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if (shouldCleanup) {
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fs.unlink(path, (e) => {
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if (e) log(e.stack);
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});
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}
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})
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.catch(rej);
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}))
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.then(file => {
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log(`drive file has been created ${file._id}`);
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resolve(file);
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pack(file).then(serializedFile => {
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// Publish drive_file_created event
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event(user._id, 'drive_file_created', serializedFile);
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publishDriveStream(user._id, 'file_created', serializedFile);
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// Register to search database
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if (config.elasticsearch.enable) {
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const es = require('../../db/elasticsearch');
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es.index({
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index: 'misskey',
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type: 'drive_file',
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id: file._id.toString(),
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body: {
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name: file.name,
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user_id: user._id.toString()
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}
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});
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}
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});
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})
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.catch(reject);
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});
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