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A proxy download cloudflare worker
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| addEventListener("fetch", (event) => { | |
| event.respondWith(handleRequest(event.request).catch(({ stack }) => new Response(stack, { status: 500 }))); | |
| }); | |
| function getQueryParam(url, paramName) { | |
| const queryStartIdx = url.indexOf("?"); | |
| if (queryStartIdx < 0) { | |
| return null; | |
| } | |
| const query = url.slice(queryStartIdx + 1); | |
| const params = new URLSearchParams(query); | |
| const paramValue = params.get(paramName); | |
| if (!paramValue || paramValue === "") { | |
| return null; | |
| } | |
| return paramValue; | |
| } | |
| async function handleRequest(request) { | |
| const url = getUrl(request); | |
| if (!url) { | |
| return new Response(Page, { | |
| headers: { "Content-Type": "text/html" }, | |
| status: 404, | |
| }); | |
| } | |
| let response = await fetch( | |
| new Request(url, { | |
| body: request.body, | |
| headers: request.headers, | |
| method: request.method, | |
| redirect: "follow", | |
| }) | |
| ); | |
| const modType = getQueryParam(request.url, "type"); | |
| const headers = new Headers(response.headers); | |
| if (modType === "reverse") { | |
| const fileType = response.headers.get("Content-Type"); | |
| if (fileType) { | |
| function getHost(str) { | |
| return str.replace(/^(https?:\/\/[^/]+)(\/.*)?$/, "$1"); | |
| } | |
| const cloneBody = await response.clone().text(); | |
| const proxyHost = getHost(request.url); | |
| function processUrl(str, proxy, proxyUrl) { | |
| const addProxy = `${proxy}/?type=reverse&url=`; | |
| if (str.startsWith("http")) { | |
| return addProxy + encodeURIComponent(str); | |
| } else if (str.startsWith("//")) { | |
| return addProxy + encodeURIComponent(`https:${str}`); | |
| } else if (str.startsWith("./")) { | |
| return addProxy + encodeURIComponent(proxyUrl.replace(/^(https?:\/\/.+)\/[^\/]*$/, "$1") + str.substring(1)); | |
| } else if (str.startsWith("/")) { | |
| return addProxy + encodeURIComponent(getHost(proxyUrl) + str); | |
| } else { | |
| return addProxy + encodeURIComponent(proxyUrl.replace(/^(https?:\/\/.+)\/[^\/]*$/, "$1/") + str); | |
| } | |
| } | |
| if (fileType.startsWith("text/html")) { | |
| const regex = /((?:href|src|action)=["'])(.*?)["']/gi; | |
| const replacedBody = cloneBody.replace(regex, (match, p1, p2) => `${p1}${processUrl(p2, proxyHost, url)}"`); | |
| if (headers.get("Content-Security-Policy")) { | |
| headers.set("Content-Security-Policy", `default-src *;`); | |
| } | |
| return new Response(replacedBody, { | |
| headers, | |
| status: response.status, | |
| }); | |
| } else if (fileType.startsWith("text/css")) { | |
| const cssRegex = /url\(["'](.*?)["']\)/gi; | |
| const replacedCss = cloneBody.replace(cssRegex, (match, p1) => `url("${processUrl(p1, proxyHost, url)}")`); | |
| return new Response(replacedCss, { | |
| headers, | |
| status: response.status, | |
| }); | |
| } | |
| } | |
| return new Response(response.body, { | |
| headers, | |
| status: response.status, | |
| }); | |
| } | |
| if (modType) { | |
| headers.set("Content-Type", `${modType}`); | |
| } | |
| if (getQueryParam(request.url, "download")) { | |
| const contentDisposition = headers.get("Content-Disposition"); | |
| if (!contentDisposition) { | |
| const filenameinurl = url.split("/").pop(); | |
| headers.set("Content-Disposition", `attachment; filename="${filenameinurl}"`); | |
| } | |
| } else { | |
| headers.delete("Content-Disposition"); | |
| } | |
| if (getQueryParam(request.url, "fetch")) { | |
| return new Response(response.body, { | |
| headers, | |
| status: response.status, | |
| }); | |
| } else { | |
| let { readable, writable } = new TransformStream(); | |
| response.body.pipeTo(writable); | |
| return new Response(readable, { | |
| headers, | |
| status: response.status, | |
| }); | |
| } | |
| } | |
| const getUrl = ({ url }) => { | |
| const { pathname, searchParams } = new URL(url); | |
| if (pathname.startsWith("/http")) { | |
| return pathname | |
| .slice(1) | |
| .replace(/http:\/(?!\/)/, "http://") | |
| .replace(/https:\/(?!\/)/, "https://"); | |
| } | |
| const searchParamsUrl = searchParams.get("url"); | |
| if (searchParamsUrl?.startsWith("http")) { | |
| return searchParamsUrl; | |
| } | |
| }; | |
| const Page = ` | |
| <!doctype html> | |
| <html> | |
| <head> | |
| <link rel="icon" href="data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-flower1" viewBox="0 0 16 16"><path d="M6.174 1.184a2 2 0 0 1 3.652 0A2 2 0 0 1 12.99 3.01a2 2 0 0 1 1.826 3.164 2 2 0 0 1 0 3.652 2 2 0 0 1-1.826 3.164 2 2 0 0 1-3.164 1.826 2 2 0 0 1-3.652 0A2 2 0 0 1 3.01 12.99a2 2 0 0 1-1.826-3.164 2 2 0 0 1 0-3.652A2 2 0 0 1 3.01 3.01a2 2 0 0 1 3.164-1.826zM8 1a1 1 0 0 0-.998 1.03l.01.091c.012.077.029.176.054.296.049.241.122.542.213.887.182.688.428 1.513.676 2.314L8 5.762l.045-.144c.248-.8.494-1.626.676-2.314.091-.345.164-.646.213-.887a4.997 4.997 0 0 0 .064-.386L9 2a1 1 0 0 0-1-1zM2 9l.03-.002.091-.01a4.99 4.99 0 0 0 .296-.054c.241-.049.542-.122.887-.213a60.59 60.59 0 0 0 2.314-.676L5.762 8l-.144-.045a60.59 60.59 0 0 0-2.314-.676 16.705 16.705 0 0 0-.887-.213 4.99 4.99 0 0 0-.386-.064L2 7a1 1 0 1 0 0 2zm7 5-.002-.03a5.005 5.005 0 0 0-.064-.386 16.398 16.398 0 0 0-.213-.888 60.582 60.582 0 0 0-.676-2.314L8 10.238l-.045.144c-.248.8-.494 1.626-.676 2.314-.091.345-.164.646-.213.887a4.996 4.996 0 0 0-.064.386L7 14a1 1 0 1 0 2 0zm-5.696-2.134.025-.017a5.001 5.001 0 0 0 .303-.248c.184-.164.408-.377.661-.629A60.614 60.614 0 0 0 5.96 9.23l.103-.111-.147.033a60.88 60.88 0 0 0-2.343.572c-.344.093-.64.18-.874.258a5.063 5.063 0 0 0-.367.138l-.027.014a1 1 0 1 0 1 1.732zM4.5 14.062a1 1 0 0 0 1.366-.366l.014-.027c.01-.02.021-.048.036-.084a5.09 5.09 0 0 0 .102-.283c.078-.233.165-.53.258-.874a60.6 60.6 0 0 0 .572-2.343l.033-.147-.11.102a60.848 60.848 0 0 0-1.743 1.667 17.07 17.07 0 0 0-.629.66 5.06 5.06 0 0 0-.248.304l-.017.025a1 1 0 0 0 .366 1.366zm9.196-8.196a1 1 0 0 0-1-1.732l-.025.017a4.951 4.951 0 0 0-.303.248 16.69 16.69 0 0 0-.661.629A60.72 60.72 0 0 0 10.04 6.77l-.102.111.147-.033a60.6 60.6 0 0 0 2.342-.572c.345-.093.642-.18.875-.258a4.993 4.993 0 0 0 .367-.138.53.53 0 0 0 .027-.014zM11.5 1.938a1 1 0 0 0-1.366.366l-.014.027c-.01.02-.021.048-.036.084a5.09 5.09 0 0 0-.102.283c-.078.233-.165.53-.258.875a60.62 60.62 0 0 0-.572 2.342l-.033.147.11-.102a60.848 60.848 0 0 0 1.743-1.667c.252-.253.465-.477.629-.66a5.001 5.001 0 0 0 .248-.304l.017-.025a1 1 0 0 0-.366-1.366zM14 9a1 1 0 0 0 0-2l-.03.002a4.996 4.996 0 0 0-.386.064c-.242.049-.543.122-.888.213-.688.182-1.513.428-2.314.676L10.238 8l.144.045c.8.248 1.626.494 2.314.676.345.091.646.164.887.213a4.996 4.996 0 0 0 .386.064L14 9zM1.938 4.5a1 1 0 0 0 .393 1.38l.084.035c.072.03.166.064.283.103.233.078.53.165.874.258a60.88 60.88 0 0 0 2.343.572l.147.033-.103-.111a60.584 60.584 0 0 0-1.666-1.742 16.705 16.705 0 0 0-.66-.629 4.996 4.996 0 0 0-.304-.248l-.025-.017a1 1 0 0 0-1.366.366zm2.196-1.196.017.025a4.996 4.996 0 0 0 .248.303c.164.184.377.408.629.661A60.597 60.597 0 0 0 6.77 5.96l.111.102-.033-.147a60.602 60.602 0 0 0-.572-2.342c-.093-.345-.18-.642-.258-.875a5.006 5.006 0 0 0-.138-.367l-.014-.027a1 1 0 1 0-1.732 1zm9.928 8.196a1 1 0 0 0-.366-1.366l-.027-.014a5 5 0 0 0-.367-.138c-.233-.078-.53-.165-.875-.258a60.619 60.619 0 0 0-2.342-.572l-.147-.033.102.111a60.73 60.73 0 0 0 1.667 1.742c.253.252.477.465.66.629a4.946 4.946 0 0 0 .304.248l.025.017a1 1 0 0 0 1.366-.366zm-3.928 2.196a1 1 0 0 0 1.732-1l-.017-.025a5.065 5.065 0 0 0-.248-.303 16.705 16.705 0 0 0-.629-.661A60.462 60.462 0 0 0 9.23 10.04l-.111-.102.033.147a60.6 60.6 0 0 0 .572 2.342c.093.345.18.642.258.875a4.985 4.985 0 0 0 .138.367.575.575 0 0 0 .014.027zM8 9.5a1.5 1.5 0 1 0 0-3 1.5 1.5 0 0 0 0 3z"/></svg>"> | |
| <meta charset=UTF-8> | |
| <meta http-equiv=X-UA-Compatible content="IE=edge"> | |
| <meta name=viewport content="width=device-width,initial-scale=1"> | |
| <title>Proxy</title> | |
| <style>body,div,form{display:flex}body,select[name=type]{color:#fff;background-color:#000}body,html{height:100%;overflow:hidden}body{justify-content:center;align-items:center;height:100vh;margin:0;font-family:Arial,'Helvetica Neue',Helvetica,sans-serif}form{flex-direction:column;align-items:center}input[name=url]{margin-right:10px;flex-grow:1;height:30px;font-size:16px;border-radius:5px;border:2px solid #fff;padding:5px;color:#fff;background-color:transparent}button#download,button#fetch{background-color:red;color:#fff;border:none;border-radius:5px;cursor:pointer;height:30px;padding:5px;margin:10px}input#download:checked+button#download,input#fetch:checked+button#fetch{background-color:green;color:#fff}div{align-items:center}button[type=button],button[type=submit]{height:30px;font-size:16px;border-radius:5px;border:none;padding:5px 10px;cursor:pointer}button[type=submit]{background-color:#007bff;color:#fff;margin-right:10px}button[type=button]{background-color:#333;color:#eee}button[type=button]:hover,button[type=submit]:hover{opacity:.8}select[name=type]{margin-top:10px;height:30px;font-size:16px;border-radius:5px;border:2px solid #fff;padding:5px}</style> | |
| </head> | |
| <body> | |
| <form> | |
| <div> | |
| <input name=url type=url required> | |
| <button type=submit>→</button> | |
| <button type=button onclick=clearInput()>Clear</button> | |
| </div> | |
| <br> | |
| <select name=type id=type> | |
| <option value="" selected>As Is</option> | |
| <option value=application/json>application/json</option> | |
| <option value=application/msword>application/msword</option> | |
| <option value=application/octet-stream>application/octet-stream</option> | |
| <option value=application/pdf>application/pdf</option> | |
| <option value=application/xml>application/xml</option> | |
| <option value=application/zip>application/zip</option> | |
| <option value=audio/mp3>audio/mp3</option> | |
| <option value=audio/ogg>audio/ogg</option> | |
| <option value=audio/wav>audio/wav</option> | |
| <option value=audio/webm>audio/webm</option> | |
| <option value=image/avif>image/avif</option> | |
| <option value=image/bmp>image/bmp</option> | |
| <option value=image/gif>image/gif</option> | |
| <option value=image/jpeg>image/jpeg</option> | |
| <option value=image/png>image/png</option> | |
| <option value=image/svg+xml>image/svg+xml</option> | |
| <option value=image/webp>image/webp</option> | |
| <option value=image/webp>image/webp</option> | |
| <option value="text/css;charset=utf8">text/css</option> | |
| <option value="text/html;charset=utf8">text/html</option> | |
| <option value="text/javascript;charset=utf8">text/javascript</option> | |
| <option value="text/plain;charset=utf8">text/plain</option> | |
| <option value=video/mp2t>video/mp2t</option> | |
| <option value=video/mp4>video/mp4</option> | |
| <option value=video/ogg>video/ogg</option> | |
| <option value=video/quicktime>video/quicktime</option> | |
| <option value=video/webm>video/webm</option> | |
| <option value=video/x-msvideo>video/x-msvideo</option> | |
| <option value=reverse>Reverse</option> | |
| </select><br> | |
| <div> | |
| <input type=checkbox id=download name=download value=true style=display:none> | |
| <button type=button id=download onclick=toggleDownload()>As File</button> | |
| <input type=checkbox id=fetch name=fetch value=true style=display:none> | |
| <button type=button id=fetch onclick=toggleFetch()>Use Fetch</button> | |
| </div> | |
| </form> | |
| <script>function clearInput(){document.querySelector("input[name='url']").value=""}function toggleDownload(){var e=document.getElementById("download"),c=document.querySelector("input[name='download']");c.checked?(e.style.backgroundColor="red",c.checked=!1):(e.style.backgroundColor="green",c.checked=!0)}function toggleFetch(){var e=document.getElementById("fetch"),c=document.querySelector("input[name='fetch']");c.checked?(e.style.backgroundColor="red",c.checked=!1):(e.style.backgroundColor="green",c.checked=!0)}</script> | |
| </body> | |
| </html> | |
| `; |
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