urllib
Version:
Help in opening URLs (mostly HTTP) in a complex world — basic and digest authentication, redirections, timeout and more. Base undici API.
229 lines • 19.2 kB
JavaScript
import { randomBytes, createHash } from 'node:crypto';
import { Readable } from 'node:stream';
import { performance } from 'node:perf_hooks';
import { ReadableStream, TransformStream } from 'node:stream/web';
import { Blob } from 'node:buffer';
import symbols from './symbols.js';
const JSONCtlCharsMap = {
'"': '\\"', // \u0022
'\\': '\\\\', // \u005c
'\b': '\\b', // \u0008
'\f': '\\f', // \u000c
'\n': '\\n', // \u000a
'\r': '\\r', // \u000d
'\t': '\\t', // \u0009
};
/* eslint no-control-regex: "off"*/
const JSONCtlCharsRE = /[\u0000-\u001F\u005C]/g;
function replaceOneChar(c) {
return JSONCtlCharsMap[c] || '\\u' + (c.charCodeAt(0) + 0x10000).toString(16).substring(1);
}
function replaceJSONCtlChars(value) {
return value.replace(JSONCtlCharsRE, replaceOneChar);
}
export function parseJSON(data, fixJSONCtlChars) {
if (typeof fixJSONCtlChars === 'function') {
data = fixJSONCtlChars(data);
}
else if (fixJSONCtlChars) {
// https://github.com/node-modules/urllib/pull/77
// remote the control characters (U+0000 through U+001F)
data = replaceJSONCtlChars(data);
}
try {
data = JSON.parse(data);
}
catch (err) {
if (err.name === 'SyntaxError') {
err.name = 'JSONResponseFormatError';
}
if (data.length > 1024) {
// show 0~512 ... -512~end data
err.message += ' (data json format: ' +
JSON.stringify(data.slice(0, 512)) + ' ...skip... ' + JSON.stringify(data.slice(data.length - 512)) + ')';
}
else {
err.message += ' (data json format: ' + JSON.stringify(data) + ')';
}
throw err;
}
return data;
}
function md5(s) {
const sum = createHash('md5');
sum.update(s, 'utf8');
return sum.digest('hex');
}
const AUTH_KEY_VALUE_RE = /(\w{1,100})=["']?([^'"]+)["']?/;
let NC = 0;
const NC_PAD = '00000000';
export function digestAuthHeader(method, uri, wwwAuthenticate, userpass) {
// WWW-Authenticate: Digest realm="testrealm@host.com",
// qop="auth,auth-int",
// nonce="dcd98b7102dd2f0e8b11d0f600bfb0c093",
// opaque="5ccc069c403ebaf9f0171e9517f40e41"
// Authorization: Digest username="Mufasa",
// realm="testrealm@host.com",
// nonce="dcd98b7102dd2f0e8b11d0f600bfb0c093",
// uri="/dir/index.html",
// qop=auth,
// nc=00000001,
// cnonce="0a4f113b",
// response="6629fae49393a05397450978507c4ef1",
// opaque="5ccc069c403ebaf9f0171e9517f40e41"
// HA1 = MD5( "Mufasa:testrealm@host.com:Circle Of Life" )
// = 939e7578ed9e3c518a452acee763bce9
//
// HA2 = MD5( "GET:/dir/index.html" )
// = 39aff3a2bab6126f332b942af96d3366
//
// Response = MD5( "939e7578ed9e3c518a452acee763bce9:\
// dcd98b7102dd2f0e8b11d0f600bfb0c093:\
// 00000001:0a4f113b:auth:\
// 39aff3a2bab6126f332b942af96d3366" )
// = 6629fae49393a05397450978507c4ef1
const parts = wwwAuthenticate.split(',');
const opts = {};
for (const part of parts) {
const m = part.match(AUTH_KEY_VALUE_RE);
if (m) {
opts[m[1]] = m[2].replace(/["']/g, '');
}
}
if (!opts.realm || !opts.nonce) {
return '';
}
let qop = opts.qop || '';
const index = userpass.indexOf(':');
const user = userpass.substring(0, index);
const pass = userpass.substring(index + 1);
let nc = String(++NC);
nc = `${NC_PAD.substring(nc.length)}${nc}`;
const cnonce = randomBytes(8).toString('hex');
const ha1 = md5(`${user}:${opts.realm}:${pass}`);
const ha2 = md5(`${method.toUpperCase()}:${uri}`);
let s = `${ha1}:${opts.nonce}`;
if (qop) {
qop = qop.split(',')[0];
s += `:${nc}:${cnonce}:${qop}`;
}
s += `:${ha2}`;
const response = md5(s);
let authstring = `Digest username="${user}", realm="${opts.realm}", nonce="${opts.nonce}", uri="${uri}", response="${response}"`;
if (opts.opaque) {
authstring += `, opaque="${opts.opaque}"`;
}
if (qop) {
authstring += `, qop=${qop}, nc=${nc}, cnonce="${cnonce}"`;
}
return authstring;
}
const MAX_ID_VALUE = Math.pow(2, 31) - 10;
const globalIds = {};
export function globalId(category) {
if (!globalIds[category] || globalIds[category] >= MAX_ID_VALUE) {
globalIds[category] = 0;
}
return ++globalIds[category];
}
export function performanceTime(startTime, now) {
return Math.floor(((now ?? performance.now()) - startTime) * 1000) / 1000;
}
export function isReadable(stream) {
if (typeof Readable.isReadable === 'function')
return Readable.isReadable(stream);
// patch from node
// https://github.com/nodejs/node/blob/1287530385137dda1d44975063217ccf90759475/lib/internal/streams/utils.js#L119
// simple way https://github.com/sindresorhus/is-stream/blob/main/index.js
return stream !== null
&& typeof stream === 'object'
&& typeof stream.pipe === 'function'
&& stream.readable !== false
&& typeof stream._read === 'function'
&& typeof stream._readableState === 'object';
}
export function updateSocketInfo(socketInfo, internalOpaque, err) {
const socket = internalOpaque[symbols.kRequestSocket] ?? err?.[symbols.kErrorSocket];
if (socket) {
socketInfo.id = socket[symbols.kSocketId];
socketInfo.handledRequests = socket[symbols.kHandledRequests];
socketInfo.handledResponses = socket[symbols.kHandledResponses];
if (socket[symbols.kSocketLocalAddress]) {
socketInfo.localAddress = socket[symbols.kSocketLocalAddress];
socketInfo.localPort = socket[symbols.kSocketLocalPort];
}
if (socket.remoteAddress) {
socketInfo.remoteAddress = socket.remoteAddress;
socketInfo.remotePort = socket.remotePort;
socketInfo.remoteFamily = socket.remoteFamily;
}
if (Array.isArray(socket.autoSelectFamilyAttemptedAddresses)) {
socketInfo.attemptedRemoteAddresses = socket.autoSelectFamilyAttemptedAddresses;
}
socketInfo.bytesRead = socket.bytesRead;
socketInfo.bytesWritten = socket.bytesWritten;
if (socket[symbols.kSocketConnectErrorTime]) {
socketInfo.connectErrorTime = socket[symbols.kSocketConnectErrorTime];
socketInfo.connectProtocol = socket[symbols.kSocketConnectProtocol];
socketInfo.connectHost = socket[symbols.kSocketConnectHost];
socketInfo.connectPort = socket[symbols.kSocketConnectPort];
}
if (socket[symbols.kSocketConnectedTime]) {
socketInfo.connectedTime = socket[symbols.kSocketConnectedTime];
}
if (socket[symbols.kSocketRequestEndTime]) {
socketInfo.lastRequestEndTime = socket[symbols.kSocketRequestEndTime];
}
socket[symbols.kSocketRequestEndTime] = new Date();
}
}
export function convertHeader(headers) {
const res = {};
for (const [key, value] of headers.entries()) {
if (res[key]) {
if (!Array.isArray(res[key])) {
res[key] = [res[key]];
}
res[key].push(value);
}
else {
res[key] = value;
}
}
return res;
}
// support require from Node.js 16
export function patchForNode16() {
if (typeof global.ReadableStream === 'undefined') {
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
global.ReadableStream = ReadableStream;
}
if (typeof global.TransformStream === 'undefined') {
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
global.TransformStream = TransformStream;
}
if (typeof global.Blob === 'undefined') {
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
global.Blob = Blob;
}
if (typeof global.DOMException === 'undefined') {
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
global.DOMException = getDOMExceptionClass();
}
}
// https://github.com/jimmywarting/node-domexception/blob/main/index.js
function getDOMExceptionClass() {
try {
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
atob(0);
}
catch (err) {
return err.constructor;
}
}
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