mirror of https://github.com/hunshcn/gh-proxy
feat: 新增 ES Modules Workers 脚本
Mankin
parent
9b24915abe
commit
14e45a27ed
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@ -54,6 +54,10 @@ github release、archive以及项目文件的加速项目，支持clone，有Clo
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复制 [index.js](https://cdn.jsdelivr.net/gh/hunshcn/gh-proxy@master/index.js) 到左侧代码框，`Save and deploy`。如果正常，右侧应显示首页。
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> 由于 [JavaScript modules are now supported on Cloudflare Workers](https://blog.cloudflare.com/workers-javascript-modules/)
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> 部署 ES Modules 版本可以使用 [worker.es.js](https://cdn.jsdelivr.net/gh/hunshcn/gh-proxy@master/worker.es.js)
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> 另有 TypeScript 版本：[worker.es.ts](https://cdn.jsdelivr.net/gh/hunshcn/gh-proxy@master/worker.es.ts)
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`ASSET_URL`是静态资源的url（实际上就是现在显示出来的那个输入框单页面）
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`PREFIX`是前缀，默认（根路径情况为"/"），如果自定义路由为example.com/gh/*，请将PREFIX改为 '/gh/'，注意，少一个杠都会错！
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@ -0,0 +1,180 @@
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'use strict'
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// Replace with es modules
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export default {
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async fetch(request) {
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/**
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* static files (404.html, sw.js, conf.js)
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*/
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const ASSET_URL = 'https://hunshcn.github.io/gh-proxy/'
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// 前缀，如果自定义路由为example.com/gh/*，将PREFIX改为 '/gh/'，注意，少一个杠都会错！
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const PREFIX = '/'
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// 分支文件使用jsDelivr镜像的开关，0为关闭，默认关闭
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const Config = {
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jsdelivr: 0
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}
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const whiteList = [] // 白名单，路径里面有包含字符的才会通过，e.g. ['/username/']
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/** @type {ResponseInit} */
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const PREFLIGHT_INIT = {
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status: 204,
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headers: new Headers({
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'access-control-allow-origin': '*',
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'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS',
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'access-control-max-age': '1728000',
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}),
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}
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const exp1 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:releases|archive)\/.*$/i
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const exp2 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:blob|raw)\/.*$/i
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const exp3 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:info|git-).*$/i
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const exp4 = /^(?:https?:\/\/)?raw\.(?:githubusercontent|github)\.com\/.+?\/.+?\/.+?\/.+$/i
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const exp5 = /^(?:https?:\/\/)?gist\.(?:githubusercontent|github)\.com\/.+?\/.+?\/.+$/i
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const exp6 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/tags.*$/i
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/**
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* @param {any} body
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* @param {number} status
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* @param {Object<string, string>} headers
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*/
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function makeRes(body, status = 200, headers = {}) {
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headers['access-control-allow-origin'] = '*'
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return new Response(body, { status, headers })
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}
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/**
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* @param {string} urlStr
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*/
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function newUrl(urlStr) {
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try {
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return new URL(urlStr)
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} catch (err) {
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return null
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}
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}
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function checkUrl(u) {
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for (let i of [exp1, exp2, exp3, exp4, exp5, exp6]) {
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if (u.search(i) === 0) {
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return true
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}
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}
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return false
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}
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/**
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* @param {FetchEvent} e
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*/
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async function fetchHandler(e) {
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const req = e.request
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const urlStr = req.url
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const urlObj = new URL(urlStr)
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let path = urlObj.searchParams.get('q')
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if (path) {
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return Response.redirect('https://' + urlObj.host + PREFIX + path, 301)
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}
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// cfworker 会把路径中的 `//` 合并成 `/`
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path = urlObj.href.substr(urlObj.origin.length + PREFIX.length).replace(/^https?:\/+/, 'https://')
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if (path.search(exp1) === 0 || path.search(exp5) === 0 || path.search(exp6) === 0 || path.search(exp3) === 0 || path.search(exp4) === 0) {
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return httpHandler(req, path)
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} else if (path.search(exp2) === 0) {
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if (Config.jsdelivr) {
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const newUrl = path.replace('/blob/', '@').replace(/^(?:https?:\/\/)?github\.com/, 'https://cdn.jsdelivr.net/gh')
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return Response.redirect(newUrl, 302)
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} else {
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path = path.replace('/blob/', '/raw/')
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return httpHandler(req, path)
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}
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} else if (path.search(exp4) === 0) {
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const newUrl = path.replace(/(?<=com\/.+?\/.+?)\/(.+?\/)/, '@$1').replace(/^(?:https?:\/\/)?raw\.(?:githubusercontent|github)\.com/, 'https://cdn.jsdelivr.net/gh')
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return Response.redirect(newUrl, 302)
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} else {
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return fetch(ASSET_URL + path)
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}
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}
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/**
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* @param {Request} req
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* @param {string} pathname
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*/
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function httpHandler(req, pathname) {
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const reqHdrRaw = req.headers
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// preflight
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if (req.method === 'OPTIONS' &&
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reqHdrRaw.has('access-control-request-headers')
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) {
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return new Response(null, PREFLIGHT_INIT)
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}
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const reqHdrNew = new Headers(reqHdrRaw)
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let urlStr = pathname
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let flag = !Boolean(whiteList.length)
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for (let i of whiteList) {
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if (urlStr.includes(i)) {
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flag = true
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break
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}
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}
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if (!flag) {
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return new Response("blocked", { status: 403 })
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}
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if (urlStr.search(/^https?:\/\//) !== 0) {
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urlStr = 'https://' + urlStr
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}
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const urlObj = newUrl(urlStr)
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/** @type {RequestInit} */
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const reqInit = {
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method: req.method,
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headers: reqHdrNew,
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redirect: 'manual',
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body: req.body
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}
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return proxy(urlObj, reqInit)
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}
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/**
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*
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* @param {URL} urlObj
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* @param {RequestInit} reqInit
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*/
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async function proxy(urlObj, reqInit) {
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const res = await fetch(urlObj.href, reqInit)
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const resHdrOld = res.headers
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const resHdrNew = new Headers(resHdrOld)
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const status = res.status
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if (resHdrNew.has('location')) {
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let _location = resHdrNew.get('location')
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if (checkUrl(_location))
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resHdrNew.set('location', PREFIX + _location)
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else {
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reqInit.redirect = 'follow'
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return proxy(newUrl(_location), reqInit)
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}
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}
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resHdrNew.set('access-control-expose-headers', '*')
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resHdrNew.set('access-control-allow-origin', '*')
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resHdrNew.delete('content-security-policy')
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resHdrNew.delete('content-security-policy-report-only')
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resHdrNew.delete('clear-site-data')
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return new Response(res.body, {
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status,
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headers: resHdrNew,
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})
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}
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return fetchHandler({ request }).catch(err => makeRes('cfworker error:\n' + err.stack, 502))
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}
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}
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@ -0,0 +1,171 @@
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interface Env { }
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export default {
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async fetch(request): Promise<Response> {
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/**
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* static files (404.html, sw.js, conf.js)
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*/
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const ASSET_URL = 'https://hunshcn.github.io/gh-proxy/'
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// 前缀，如果自定义路由为example.com/gh/*，将PREFIX改为 '/gh/'，注意，少一个杠都会错！
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const PREFIX = '/'
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// 分支文件使用jsDelivr镜像的开关，0为关闭，默认关闭
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const Config = {
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jsdelivr: 0
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}
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const whiteList: string[] = [] // 白名单，路径里面有包含字符的才会通过，e.g. ['/username/']
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const PREFLIGHT_INIT: ResponseInit = {
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status: 204,
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headers: new Headers({
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'access-control-allow-origin': '*',
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'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS',
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'access-control-max-age': '1728000',
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}),
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}
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const exp1 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:releases|archive)\/.*$/i
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const exp2 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:blob|raw)\/.*$/i
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const exp3 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:info|git-).*$/i
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const exp4 = /^(?:https?:\/\/)?raw\.(?:githubusercontent|github)\.com\/.+?\/.+?\/.+?\/.+$/i
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const exp5 = /^(?:https?:\/\/)?gist\.(?:githubusercontent|github)\.com\/.+?\/.+?\/.+$/i
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const exp6 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/tags.*$/i
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function makeRes(body: BodyInit | null, status: number = 200, headers: { [s: string]: string } = {}) {
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headers['access-control-allow-origin'] = '*'
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return new Response(body, { status, headers })
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}
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function newUrl(urlStr: string | null) {
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if (!urlStr) return null
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try {
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return new URL(urlStr)
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} catch (err) {
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return null
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}
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}
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function checkUrl(u: string | null) {
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if (!u) return false
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for (let i of [exp1, exp2, exp3, exp4, exp5, exp6]) {
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if (u.search(i) === 0) {
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return true
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}
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}
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return false
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}
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async function fetchHandler(e: Partial<FetchEvent>) {
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const req = e.request
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const urlStr = req.url
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const urlObj = new URL(urlStr)
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let path = urlObj.searchParams.get('q')
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if (path) {
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return Response.redirect('https://' + urlObj.host + PREFIX + path, 301)
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}
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// cfworker 会把路径中的 `//` 合并成 `/`
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path = urlObj.href.substr(urlObj.origin.length + PREFIX.length).replace(/^https?:\/+/, 'https://')
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if (path.search(exp1) === 0 || path.search(exp5) === 0 || path.search(exp6) === 0 || path.search(exp3) === 0 || path.search(exp4) === 0) {
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return httpHandler(req, path)
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} else if (path.search(exp2) === 0) {
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if (Config.jsdelivr) {
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const newUrl = path.replace('/blob/', '@').replace(/^(?:https?:\/\/)?github\.com/, 'https://cdn.jsdelivr.net/gh')
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return Response.redirect(newUrl, 302)
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} else {
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path = path.replace('/blob/', '/raw/')
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return httpHandler(req, path)
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}
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} else if (path.search(exp4) === 0) {
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const newUrl = path.replace(/(?<=com\/.+?\/.+?)\/(.+?\/)/, '@$1').replace(/^(?:https?:\/\/)?raw\.(?:githubusercontent|github)\.com/, 'https://cdn.jsdelivr.net/gh')
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return Response.redirect(newUrl, 302)
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} else {
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return fetch(ASSET_URL + path)
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}
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}
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function httpHandler(req: Request, pathname: string) {
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const reqHdrRaw = req.headers
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// preflight
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if (req.method === 'OPTIONS' &&
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reqHdrRaw.has('access-control-request-headers')
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) {
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return new Response(null, PREFLIGHT_INIT)
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}
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const reqHdrNew = new Headers(reqHdrRaw)
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let urlStr = pathname
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let flag = !Boolean(whiteList.length)
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for (let i of whiteList) {
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if (urlStr.includes(i)) {
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flag = true
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break
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}
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}
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if (!flag) {
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return new Response("blocked", { status: 403 })
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}
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if (urlStr.search(/^https?:\/\//) !== 0) {
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urlStr = 'https://' + urlStr
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}
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const urlObj = newUrl(urlStr)
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if (!urlObj) {
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return new Response("url error", { status: 404 })
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}
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const reqInit: RequestInit = {
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method: req.method,
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headers: reqHdrNew,
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redirect: 'manual',
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body: req.body
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}
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return proxy(urlObj, reqInit)
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}
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async function proxy(urlObj: URL, reqInit: RequestInit) {
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const res = await fetch(urlObj.href, reqInit)
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const resHdrOld = res.headers
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const resHdrNew = new Headers(resHdrOld)
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const status = res.status
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if (resHdrNew.has('location')) {
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let _location = resHdrNew.get('location')
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if (checkUrl(_location))
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resHdrNew.set('location', PREFIX + _location)
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else {
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const newLocation = newUrl(_location)
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if (!newLocation) return new Response("url error", { status: 404 })
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reqInit.redirect = 'follow'
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return proxy(newLocation, reqInit)
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}
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}
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resHdrNew.set('access-control-expose-headers', '*')
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resHdrNew.set('access-control-allow-origin', '*')
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resHdrNew.delete('content-security-policy')
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resHdrNew.delete('content-security-policy-report-only')
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resHdrNew.delete('clear-site-data')
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return new Response(res.body, {
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status,
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headers: resHdrNew,
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})
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}
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return fetchHandler({ request }).catch(err => makeRes('cfworker error:\n' + err.stack, 502))
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}
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} satisfies ExportedHandler<Env>
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