这个在线代理不能用了！出现了403Access Denied! You are not authorized to access this GitHub Pages site.！跪求新的代码

Question

这个在线代理不能用了！出现了403Access Denied! You are not authorized to access this GitHub Pages site.！跪求新的代码

lvfeijun opened this issue 4 years ago · 18 comments

'use strict'

/**
*/
const ASSET_URL = 'https://etherdream.github.io/jsproxy'

const JS_VER = 10
const MAX_RETRY = 1

/** @type {RequestInit} /
const PREFLIGHT_INIT = {
status: 204,
headers: new Headers({
'access-control-allow-origin': '',
'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS',
'access-control-max-age': '1728000',
}),
}

/**

@param {any} body
@param {number} status
@param {Object<string, string>} headers
/
function makeRes(body, status = 200, headers = {}) {
headers['--ver'] = JS_VER
headers['access-control-allow-origin'] = ''
return new Response(body, {status, headers})
}

/**

@param {string} urlStr
*/
function newUrl(urlStr) {
try {
return new URL(urlStr)
} catch (err) {
return null
}
}

addEventListener('fetch', e => {
const ret = fetchHandler(e)
.catch(err => makeRes('cfworker error:\n' + err.stack, 502))
e.respondWith(ret)
})

/**

@param {FetchEvent} e
*/
async function fetchHandler(e) {
const req = e.request
const urlStr = req.url
const urlObj = new URL(urlStr)
const path = urlObj.href.substr(urlObj.origin.length)

if (urlObj.protocol === 'http:') {
urlObj.protocol = 'https:'
return makeRes('', 301, {
'strict-transport-security': 'max-age=99999999; includeSubDomains; preload',
'location': urlObj.href,
})
}

if (path.startsWith('/http/')) {
return httpHandler(req, path.substr(6))
}

switch (path) {
case '/http':
return makeRes('请更新 cfworker 到最新版本!')
case '/ws':
return makeRes('not support', 400)
case '/works':
return makeRes('it works')
default:
// static files
return fetch(ASSET_URL + path)
}
}

/**

@param {Request} req
@param {string} pathname
*/
function httpHandler(req, pathname) {
const reqHdrRaw = req.headers
if (reqHdrRaw.has('x-jsproxy')) {
return Response.error()
}

// preflight
if (req.method === 'OPTIONS' &&
reqHdrRaw.has('access-control-request-headers')
) {
return new Response(null, PREFLIGHT_INIT)
}

let acehOld = false
let rawSvr = ''
let rawLen = ''
let rawEtag = ''

const reqHdrNew = new Headers(reqHdrRaw)
reqHdrNew.set('x-jsproxy', '1')

// 此处逻辑和 http-dec-req-hdr.lua 大致相同
// https://github.com/EtherDream/jsproxy/blob/master/lua/http-dec-req-hdr.lua
const refer = reqHdrNew.get('referer')
const query = refer.substr(refer.indexOf('?') + 1)
if (!query) {
return makeRes('missing params', 403)
}
const param = new URLSearchParams(query)

for (const [k, v] of Object.entries(param)) {
if (k.substr(0, 2) === '--') {
// 系统信息
switch (k.substr(2)) {
case 'aceh':
acehOld = true
break
case 'raw-info':
[rawSvr, rawLen, rawEtag] = v.split('|')
break
}
} else {
// 还原 HTTP 请求头
if (v) {
reqHdrNew.set(k, v)
} else {
reqHdrNew.delete(k)
}
}
}
if (!param.has('referer')) {
reqHdrNew.delete('referer')
}

// cfworker 会把路径中的 // 合并成 /
const urlStr = pathname.replace(/^(https?):/+/, '$1://')
const urlObj = newUrl(urlStr)
if (!urlObj) {
return makeRes('invalid proxy url: ' + urlStr, 403)
}

/** @type {RequestInit} */
const reqInit = {
method: req.method,
headers: reqHdrNew,
redirect: 'manual',
}
if (req.method === 'POST') {
reqInit.body = req.body
}
return proxy(urlObj, reqInit, acehOld, rawLen, 0)
}

/**
*

@param {URL} urlObj
@param {RequestInit} reqInit
@param {number} retryTimes
*/
async function proxy(urlObj, reqInit, acehOld, rawLen, retryTimes) {
const res = await fetch(urlObj.href, reqInit)
const resHdrOld = res.headers
const resHdrNew = new Headers(resHdrOld)

let expose = '*'

for (const [k, v] of resHdrOld.entries()) {
if (k === 'access-control-allow-origin' ||
k === 'access-control-expose-headers' ||
k === 'location' ||
k === 'set-cookie'
) {
const x = '--' + k
resHdrNew.set(x, v)
if (acehOld) {
expose = expose + ',' + x
}
resHdrNew.delete(k)
}
else if (acehOld &&
k !== 'cache-control' &&
k !== 'content-language' &&
k !== 'content-type' &&
k !== 'expires' &&
k !== 'last-modified' &&
k !== 'pragma'
) {
expose = expose + ',' + k
}
}

if (acehOld) {
expose = expose + ',--s'
resHdrNew.set('--t', '1')
}

// verify
if (rawLen) {
const newLen = resHdrOld.get('content-length') || ''
const badLen = (rawLen !== newLen)

if (badLen) {
  if (retryTimes < MAX_RETRY) {
    urlObj = await parseYtVideoRedir(urlObj, newLen, res)
    if (urlObj) {
      return proxy(urlObj, reqInit, acehOld, rawLen, retryTimes + 1)
    }
  }
  return makeRes(res.body, 400, {
    '--error': `bad len: ${newLen}, except: ${rawLen}`,
    'access-control-expose-headers': '--error',
  })
}

if (retryTimes > 1) {
  resHdrNew.set('--retry', retryTimes)
}

}

let status = res.status

resHdrNew.set('access-control-expose-headers', expose)
resHdrNew.set('access-control-allow-origin', '*')
resHdrNew.set('--s', status)
resHdrNew.set('--ver', JS_VER)

resHdrNew.delete('content-security-policy')
resHdrNew.delete('content-security-policy-report-only')
resHdrNew.delete('clear-site-data')

if (status === 301 ||
status === 302 ||
status === 303 ||
status === 307 ||
status === 308
) {
status = status + 10
}

return new Response(res.body, {
status,
headers: resHdrNew,
})
}

/**

@param {URL} urlObj
*/
function isYtUrl(urlObj) {
return (
urlObj.host.endsWith('.googlevideo.com') &&
urlObj.pathname.startsWith('/videoplayback')
)
}

/**

@param {URL} urlObj
@param {number} newLen
@param {Response} res
*/
async function parseYtVideoRedir(urlObj, newLen, res) {
if (newLen > 2000) {
return null
}
if (!isYtUrl(urlObj)) {
return null
}
try {
const data = await res.text()
urlObj = new URL(data)
} catch (err) {
return null
}
if (!isYtUrl(urlObj)) {
return null
}
return urlObj

Answer 1 · 2020-12-16T13:57:37.000Z

lvfeijun commented 4 years ago

Answer 2 · 2021-01-11T18:52:43.000Z

可以分享一下你的站的源碼嗎? 很喜歡

Answer 3 · 2021-01-14T10:08:15.000Z

邮件地址给我

Answer 4 · 2021-01-14T16:40:40.000Z

borber.drum@gmail.com 谢谢大佬

Answer 5 · 2021-03-04T15:36:27.000Z

大佬，求个代码 fengzhao1124@gmail.com

Answer 6 · 2021-03-05T14:37:31.000Z

大佬，也求个代码😏 olddriverwang@gmail.com

Answer 7 · 2021-03-07T19:52:00.000Z

求大佬发一下2085883961@qq.com 谢谢

Answer 8 · 2021-03-27T11:11:39.000Z

大佬，跪求代码 2517871772@qq.com，万分感谢

Answer 9 · 2021-05-24T08:31:16.000Z

Answer 10 · 2021-05-24T08:31:32.000Z

cxkjntm007@gmail.com 大佬求一个

Answer 11 · 2021-06-01T11:42:12.000Z

2471507514@qq.com
感谢大佬求一个

Answer 12 · 2021-09-15T17:56:23.000Z

能发一下代码吗，谢谢
2241141629yt@gmail.com

Answer 13 · 2021-09-26T02:48:13.000Z

@Yandexkg 大佬求源码 tliang92@gmail.com

Answer 14 · 2021-09-26T04:35:15.000Z

求源码学习参考，谢谢大佬

letgptten@gmail.com

Answer 15 · 2021-10-24T15:01:37.000Z

求源码学习参考，感谢大佬！
ChouCong912@gmail.com

Answer 16 · 2021-11-29T10:02:47.000Z

大佬，求一份代码，十分感谢！！623409723@qq.com

Answer 17 · 2022-06-22T13:27:23.000Z

求源码学习一下，感谢大佬！！！bigshezhang@gmail.com