gh-proxy搭建教程

前言

gh-proxy是一个加速github release、archive以及项目文件的项目,支持clone。下面本文介绍两种部署方式

项目地址:https://github.com/hunshcn/gh-proxy

方式一:cf worker版本部署

推荐,无成本可以白嫖,虽然普通用户有限制,限制如下,看不懂别管,反正足够用了

bujj的演示站(请尽量自建):https://iacc.eu.org/,可以点进去填入链接使用,也可以直接跟上你需要下载的链接进行下载

首页:https://workers.cloudflare.com

注册,登陆,Start building,设置一个服务名称 (其下方会显示为:您的服务将被部署到:https://服务名称.iacc.workers.dev ),其他都默认,点创建服务

点快速编辑,复制下方的代码替换左侧代码框里的内容,保存并部署,打开上一步的网址能看到页面,就说明搭建成功了

'use strict'

/**
 * static files (404.html, sw.js, conf.js)
 */
const ASSET_URL = 'https://hunshcn.github.io/gh-proxy/'
// 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!
const PREFIX = '/'
// 分支文件使用jsDelivr镜像的开关,0为关闭,默认开启
const Config = {
    jsdelivr: 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',
    }),
}


const exp1 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:releases|archive)\/.*$/i
const exp2 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:blob|raw)\/.*$/i
const exp3 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/(?:info|git-).*$/i
const exp4 = /^(?:https?:\/\/)?raw\.(?:githubusercontent|github)\.com\/.+?\/.+?\/.+?\/.+$/i
const exp5 = /^(?:https?:\/\/)?gist\.(?:githubusercontent|github)\.com\/.+?\/.+?\/.+$/i
const exp6 = /^(?:https?:\/\/)?github\.com\/.+?\/.+?\/tags.*$/i

/**
 * @param {any} body
 * @param {number} status
 * @param {Object<string, string>} headers
 */
function makeRes(body, status = 200, headers = {}) {
    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)
})


function checkUrl(u) {
    for (let i of [exp1, exp2, exp3, exp4, exp5, exp6]) {
        if (u.search(i) === 0) {
            return true
        }
    }
    return false
}

/**
 * @param {FetchEvent} e
 */
async function fetchHandler(e) {
    const req = e.request
    const urlStr = req.url
    const urlObj = new URL(urlStr)
    let path = urlObj.searchParams.get('q')
    if (path) {
        return Response.redirect('https://' + urlObj.host + PREFIX + path, 301)
    }
    // cfworker 会把路径中的 `//` 合并成 `/`
    path = urlObj.href.substr(urlObj.origin.length + PREFIX.length).replace(/^https?:\/+/, 'https://')
    if (path.search(exp1) === 0 || path.search(exp5) === 0 || path.search(exp6) === 0 || path.search(exp3) === 0 || path.search(exp4) === 0) {
        return httpHandler(req, path)
    } else if (path.search(exp2) === 0) {
        if (Config.jsdelivr) {
            const newUrl = path.replace('/blob/', '@').replace(/^(?:https?:\/\/)?github\.com/, 'https://cdn.jsdelivr.net/gh')
            return Response.redirect(newUrl, 302)
        } else {
            path = path.replace('/blob/', '/raw/')
            return httpHandler(req, path)
        }
    } else if (path.search(exp4) === 0) {
        const newUrl = path.replace(/(?<=com\/.+?\/.+?)\/(.+?\/)/, '@$1').replace(/^(?:https?:\/\/)?raw\.(?:githubusercontent|github)\.com/, 'https://cdn.jsdelivr.net/gh')
        return Response.redirect(newUrl, 302)
    } else {
        return fetch(ASSET_URL + path)
    }
}


/**
 * @param {Request} req
 * @param {string} pathname
 */
function httpHandler(req, pathname) {
    const reqHdrRaw = req.headers

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

    const reqHdrNew = new Headers(reqHdrRaw)

    let urlStr = pathname
    if (urlStr.startsWith('github')) {
        urlStr = 'https://' + urlStr
    }
    const urlObj = newUrl(urlStr)

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


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

    const status = res.status

    if (resHdrNew.has('location')) {
        let _location = resHdrNew.get('location')
        if (checkUrl(_location))
            resHdrNew.set('location', PREFIX + _location)
        else {
            reqInit.redirect = 'follow'
            return proxy(newUrl(_location), reqInit)
        }
    }
    resHdrNew.set('access-control-expose-headers', '*')
    resHdrNew.set('access-control-allow-origin', '*')

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

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

index.js默认配置下项目文件会走jsDelivr,如需走worker,修改Config变量即可

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)

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!

Tips:如果你需要绑定自己的域名,这需要先将域名绑定到cf,然后解析你想要的A记录,开启小云朵,最后去workers里按规则添加路由就完成了,这样就能通过你自己的域名访问了。

方式二:Python版本部署(适合爱发电、引流的人士)

可以选用Docker部署,10086是外部端口,也即访问时候的端口,需要别的端口,修改它就是了

docker run -d --name="gh-proxy-py" \
  -p 0.0.0.0:10086:80 \
  --restart=always \
  hunsh/gh-proxy-py:latest

也可以直接部署,需要具备Python3环境

安装依赖,按需求修改app/main.py的前几项配置即可

pip install flask requests

声 明 1 bujj博客:www.bujj.org
2 原创文章,转载请注明转自bujj博客:www.bujj.org
3 当前页网址:https://www.bujj.org/index.php/2022/04/20/331/
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