update
This commit is contained in:
@@ -0,0 +1,197 @@
|
||||
"use strict";
|
||||
var Buffer = require("safer-buffer").Buffer;
|
||||
|
||||
// Note: UTF16-LE (or UCS2) codec is Node.js native. See encodings/internal.js
|
||||
|
||||
// == UTF16-BE codec. ==========================================================
|
||||
|
||||
exports.utf16be = Utf16BECodec;
|
||||
function Utf16BECodec() {
|
||||
}
|
||||
|
||||
Utf16BECodec.prototype.encoder = Utf16BEEncoder;
|
||||
Utf16BECodec.prototype.decoder = Utf16BEDecoder;
|
||||
Utf16BECodec.prototype.bomAware = true;
|
||||
|
||||
|
||||
// -- Encoding
|
||||
|
||||
function Utf16BEEncoder() {
|
||||
}
|
||||
|
||||
Utf16BEEncoder.prototype.write = function(str) {
|
||||
var buf = Buffer.from(str, 'ucs2');
|
||||
for (var i = 0; i < buf.length; i += 2) {
|
||||
var tmp = buf[i]; buf[i] = buf[i+1]; buf[i+1] = tmp;
|
||||
}
|
||||
return buf;
|
||||
}
|
||||
|
||||
Utf16BEEncoder.prototype.end = function() {
|
||||
}
|
||||
|
||||
|
||||
// -- Decoding
|
||||
|
||||
function Utf16BEDecoder() {
|
||||
this.overflowByte = -1;
|
||||
}
|
||||
|
||||
Utf16BEDecoder.prototype.write = function(buf) {
|
||||
if (buf.length == 0)
|
||||
return '';
|
||||
|
||||
var buf2 = Buffer.alloc(buf.length + 1),
|
||||
i = 0, j = 0;
|
||||
|
||||
if (this.overflowByte !== -1) {
|
||||
buf2[0] = buf[0];
|
||||
buf2[1] = this.overflowByte;
|
||||
i = 1; j = 2;
|
||||
}
|
||||
|
||||
for (; i < buf.length-1; i += 2, j+= 2) {
|
||||
buf2[j] = buf[i+1];
|
||||
buf2[j+1] = buf[i];
|
||||
}
|
||||
|
||||
this.overflowByte = (i == buf.length-1) ? buf[buf.length-1] : -1;
|
||||
|
||||
return buf2.slice(0, j).toString('ucs2');
|
||||
}
|
||||
|
||||
Utf16BEDecoder.prototype.end = function() {
|
||||
this.overflowByte = -1;
|
||||
}
|
||||
|
||||
|
||||
// == UTF-16 codec =============================================================
|
||||
// Decoder chooses automatically from UTF-16LE and UTF-16BE using BOM and space-based heuristic.
|
||||
// Defaults to UTF-16LE, as it's prevalent and default in Node.
|
||||
// http://en.wikipedia.org/wiki/UTF-16 and http://encoding.spec.whatwg.org/#utf-16le
|
||||
// Decoder default can be changed: iconv.decode(buf, 'utf16', {defaultEncoding: 'utf-16be'});
|
||||
|
||||
// Encoder uses UTF-16LE and prepends BOM (which can be overridden with addBOM: false).
|
||||
|
||||
exports.utf16 = Utf16Codec;
|
||||
function Utf16Codec(codecOptions, iconv) {
|
||||
this.iconv = iconv;
|
||||
}
|
||||
|
||||
Utf16Codec.prototype.encoder = Utf16Encoder;
|
||||
Utf16Codec.prototype.decoder = Utf16Decoder;
|
||||
|
||||
|
||||
// -- Encoding (pass-through)
|
||||
|
||||
function Utf16Encoder(options, codec) {
|
||||
options = options || {};
|
||||
if (options.addBOM === undefined)
|
||||
options.addBOM = true;
|
||||
this.encoder = codec.iconv.getEncoder('utf-16le', options);
|
||||
}
|
||||
|
||||
Utf16Encoder.prototype.write = function(str) {
|
||||
return this.encoder.write(str);
|
||||
}
|
||||
|
||||
Utf16Encoder.prototype.end = function() {
|
||||
return this.encoder.end();
|
||||
}
|
||||
|
||||
|
||||
// -- Decoding
|
||||
|
||||
function Utf16Decoder(options, codec) {
|
||||
this.decoder = null;
|
||||
this.initialBufs = [];
|
||||
this.initialBufsLen = 0;
|
||||
|
||||
this.options = options || {};
|
||||
this.iconv = codec.iconv;
|
||||
}
|
||||
|
||||
Utf16Decoder.prototype.write = function(buf) {
|
||||
if (!this.decoder) {
|
||||
// Codec is not chosen yet. Accumulate initial bytes.
|
||||
this.initialBufs.push(buf);
|
||||
this.initialBufsLen += buf.length;
|
||||
|
||||
if (this.initialBufsLen < 16) // We need more bytes to use space heuristic (see below)
|
||||
return '';
|
||||
|
||||
// We have enough bytes -> detect endianness.
|
||||
var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
|
||||
this.decoder = this.iconv.getDecoder(encoding, this.options);
|
||||
|
||||
var resStr = '';
|
||||
for (var i = 0; i < this.initialBufs.length; i++)
|
||||
resStr += this.decoder.write(this.initialBufs[i]);
|
||||
|
||||
this.initialBufs.length = this.initialBufsLen = 0;
|
||||
return resStr;
|
||||
}
|
||||
|
||||
return this.decoder.write(buf);
|
||||
}
|
||||
|
||||
Utf16Decoder.prototype.end = function() {
|
||||
if (!this.decoder) {
|
||||
var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
|
||||
this.decoder = this.iconv.getDecoder(encoding, this.options);
|
||||
|
||||
var resStr = '';
|
||||
for (var i = 0; i < this.initialBufs.length; i++)
|
||||
resStr += this.decoder.write(this.initialBufs[i]);
|
||||
|
||||
var trail = this.decoder.end();
|
||||
if (trail)
|
||||
resStr += trail;
|
||||
|
||||
this.initialBufs.length = this.initialBufsLen = 0;
|
||||
return resStr;
|
||||
}
|
||||
return this.decoder.end();
|
||||
}
|
||||
|
||||
function detectEncoding(bufs, defaultEncoding) {
|
||||
var b = [];
|
||||
var charsProcessed = 0;
|
||||
var asciiCharsLE = 0, asciiCharsBE = 0; // Number of ASCII chars when decoded as LE or BE.
|
||||
|
||||
outer_loop:
|
||||
for (var i = 0; i < bufs.length; i++) {
|
||||
var buf = bufs[i];
|
||||
for (var j = 0; j < buf.length; j++) {
|
||||
b.push(buf[j]);
|
||||
if (b.length === 2) {
|
||||
if (charsProcessed === 0) {
|
||||
// Check BOM first.
|
||||
if (b[0] === 0xFF && b[1] === 0xFE) return 'utf-16le';
|
||||
if (b[0] === 0xFE && b[1] === 0xFF) return 'utf-16be';
|
||||
}
|
||||
|
||||
if (b[0] === 0 && b[1] !== 0) asciiCharsBE++;
|
||||
if (b[0] !== 0 && b[1] === 0) asciiCharsLE++;
|
||||
|
||||
b.length = 0;
|
||||
charsProcessed++;
|
||||
|
||||
if (charsProcessed >= 100) {
|
||||
break outer_loop;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Make decisions.
|
||||
// Most of the time, the content has ASCII chars (U+00**), but the opposite (U+**00) is uncommon.
|
||||
// So, we count ASCII as if it was LE or BE, and decide from that.
|
||||
if (asciiCharsBE > asciiCharsLE) return 'utf-16be';
|
||||
if (asciiCharsBE < asciiCharsLE) return 'utf-16le';
|
||||
|
||||
// Couldn't decide (likely all zeros or not enough data).
|
||||
return defaultEncoding || 'utf-16le';
|
||||
}
|
||||
|
||||
|
||||
@@ -0,0 +1,90 @@
|
||||
/*!
|
||||
* forwarded
|
||||
* Copyright(c) 2014-2017 Douglas Christopher Wilson
|
||||
* MIT Licensed
|
||||
*/
|
||||
|
||||
'use strict'
|
||||
|
||||
/**
|
||||
* Module exports.
|
||||
* @public
|
||||
*/
|
||||
|
||||
module.exports = forwarded
|
||||
|
||||
/**
|
||||
* Get all addresses in the request, using the `X-Forwarded-For` header.
|
||||
*
|
||||
* @param {object} req
|
||||
* @return {array}
|
||||
* @public
|
||||
*/
|
||||
|
||||
function forwarded (req) {
|
||||
if (!req) {
|
||||
throw new TypeError('argument req is required')
|
||||
}
|
||||
|
||||
// simple header parsing
|
||||
var proxyAddrs = parse(req.headers['x-forwarded-for'] || '')
|
||||
var socketAddr = getSocketAddr(req)
|
||||
var addrs = [socketAddr].concat(proxyAddrs)
|
||||
|
||||
// return all addresses
|
||||
return addrs
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the socket address for a request.
|
||||
*
|
||||
* @param {object} req
|
||||
* @return {string}
|
||||
* @private
|
||||
*/
|
||||
|
||||
function getSocketAddr (req) {
|
||||
return req.socket
|
||||
? req.socket.remoteAddress
|
||||
: req.connection.remoteAddress
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse the X-Forwarded-For header.
|
||||
*
|
||||
* @param {string} header
|
||||
* @private
|
||||
*/
|
||||
|
||||
function parse (header) {
|
||||
var end = header.length
|
||||
var list = []
|
||||
var start = header.length
|
||||
|
||||
// gather addresses, backwards
|
||||
for (var i = header.length - 1; i >= 0; i--) {
|
||||
switch (header.charCodeAt(i)) {
|
||||
case 0x20: /* */
|
||||
if (start === end) {
|
||||
start = end = i
|
||||
}
|
||||
break
|
||||
case 0x2c: /* , */
|
||||
if (start !== end) {
|
||||
list.push(header.substring(start, end))
|
||||
}
|
||||
start = end = i
|
||||
break
|
||||
default:
|
||||
start = i
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
// final address
|
||||
if (start !== end) {
|
||||
list.push(header.substring(start, end))
|
||||
}
|
||||
|
||||
return list
|
||||
}
|
||||
@@ -0,0 +1,9 @@
|
||||
{
|
||||
"extends": "@ljharb/tsconfig",
|
||||
"compilerOptions": {
|
||||
"target": "es2021",
|
||||
},
|
||||
"exclude": [
|
||||
"coverage",
|
||||
],
|
||||
}
|
||||
@@ -0,0 +1,4 @@
|
||||
'use strict';
|
||||
|
||||
/** @type {import('./functionApply')} */
|
||||
module.exports = Function.prototype.apply;
|
||||
Reference in New Issue
Block a user