Holy-Unblocker/views/uv/sw-blacklist.js

importScripts("uv.bundle.js");
importScripts("uv.config.js");
importScripts(__uv$config.sw || "uv.sw.js");

/*

Workerware does not work yet due to one of the following possibilities:

1. UV or the bare client is not updated to support workerware yet.
2. Workerware is unfinished.
3. We are doofuses and do not know how to use workerware properly.

Going to implement a ghetto domain blacklist for now.

importScripts("./workerware.js");

const ww = new WorkerWare({
  debug: true,
  randomNames: true,
  timing: true
});


ww.use({
  function: event => console.log(event),
  events: ["fetch", "message"]
});

*/


const uv = new UVServiceWorker();

//  Get list of blacklisted domains.
const blacklist = {};
fetch("/assets/json/blacklist.json").then(request => {
  request.json().then(jsonData => {

//  Organize each domain by their tld (top level domain) ending.
    jsonData.forEach(domain => {
      const domainTld = domain.replace(/.+(?=\.\w)/, "");
      if (!blacklist.hasOwnProperty(domainTld))
        blacklist[domainTld] = [];

//    Store each entry in an array. Each tld has its own array, which will
//    later be concatenated into a regular expression.
      blacklist[domainTld].push(
        encodeURIComponent(domain.slice(0, -domainTld.length))
        .replace(/([()])/g, "\\$1")
        .replace(/(\*\.)|\./g, (match, firstExpression) =>
          firstExpression ? "(?:.+\\.)?" : "\\" + match)
      );
    });

//  Turn each domain list into a regular expression and prevent this
//  from being accidentally modified afterward.
    for (let [domainTld, domainList] of Object.entries(blacklist))
      blacklist[domainTld] = new RegExp(`^(?:${domainList.join("|")})$`);
    Object.freeze(blacklist);
  });
});

self.addEventListener("fetch", (event) => {
  event.respondWith(
    (async () => {
      if (uv.route(event)) {
//    The one and only ghetto domain blacklist.
        const domain = new URL(uv.config.decodeUrl(
            new URL(event.request.url).pathname
            .replace(uv.config.prefix, "")
          )).hostname,
          domainTld = domain.replace(/.+(?=\.\w)/, "");

//      If the domain is in the blacklist, return a 406 response code.
        if (blacklist.hasOwnProperty(domainTld) &&
          blacklist[domainTld].test(domain.slice(0, -domainTld.length)))
          return new Response(new Blob(), {status: 406});

        return await uv.fetch(event);
      }
      return await fetch(event.request);
    })()
  );
});