88 lines
2.3 KiB
TypeScript
88 lines
2.3 KiB
TypeScript
import * as fs from 'fs';
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import * as stream from 'stream';
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import * as util from 'util';
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import got, * as Got from 'got';
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import { httpAgent, httpsAgent, StatusError } from './fetch';
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import config from '@/config/index';
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import * as chalk from 'chalk';
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import Logger from '@/services/logger';
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import * as IPCIDR from 'ip-cidr';
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const PrivateIp = require('private-ip');
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const pipeline = util.promisify(stream.pipeline);
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export async function downloadUrl(url: string, path: string) {
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const logger = new Logger('download');
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logger.info(`Downloading ${chalk.cyan(url)} ...`);
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const timeout = 30 * 1000;
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const operationTimeout = 60 * 1000;
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const maxSize = config.maxFileSize || 262144000;
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const req = got.stream(url, {
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headers: {
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'User-Agent': config.userAgent
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},
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timeout: {
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lookup: timeout,
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connect: timeout,
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secureConnect: timeout,
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socket: timeout, // read timeout
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response: timeout,
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send: timeout,
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request: operationTimeout, // whole operation timeout
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},
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agent: {
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http: httpAgent,
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https: httpsAgent,
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},
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http2: false, // default
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retry: 0,
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}).on('response', (res: Got.Response) => {
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if ((process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'test') && !config.proxy && res.ip) {
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if (isPrivateIp(res.ip)) {
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logger.warn(`Blocked address: ${res.ip}`);
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req.destroy();
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}
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}
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const contentLength = res.headers['content-length'];
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if (contentLength != null) {
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const size = Number(contentLength);
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if (size > maxSize) {
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logger.warn(`maxSize exceeded (${size} > ${maxSize}) on response`);
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req.destroy();
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}
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}
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}).on('downloadProgress', (progress: Got.Progress) => {
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if (progress.transferred > maxSize) {
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logger.warn(`maxSize exceeded (${progress.transferred} > ${maxSize}) on downloadProgress`);
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req.destroy();
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}
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});
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try {
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await pipeline(req, fs.createWriteStream(path));
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} catch (e) {
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if (e instanceof Got.HTTPError) {
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throw new StatusError(`${e.response.statusCode} ${e.response.statusMessage}`, e.response.statusCode, e.response.statusMessage);
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} else {
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throw e;
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}
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}
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logger.succ(`Download finished: ${chalk.cyan(url)}`);
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}
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function isPrivateIp(ip: string) {
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for (const net of config.allowedPrivateNetworks || []) {
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const cidr = new IPCIDR(net);
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if (cidr.contains(ip)) {
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return false;
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}
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}
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return PrivateIp(ip);
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}
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