datadome CallSite 



<!doctype html>
<html>
<body>
  <button id="btn">点我打印 CallSite</button>
  <pre id="log"></pre>

  <script>

    
    function capture() {

      // 偷一张堆栈，拿到 CallSite 数组
      let sites;
      const prev = Error.prepareStackTrace;
      Error.prepareStackTrace = (_, s) => (sites = s, s);
      const dummy = new Error().stack;
      Error.prepareStackTrace = prev;

      const first = sites[0];
      const log = document.getElementById('log');

      // 先看方法在不在
      if (typeof first.getScriptHash === 'function') {
        log.textContent = 'getScriptHash 存在 → ' + first.getScriptHash();
      } else {
        log.textContent = 'getScriptHash 不存在';
      }
    }

    document.getElementById('btn').onclick = capture;
  </script>
</body>
</html>






function strToBuf(str) {
  return new TextEncoder().encode(str);   // 返回 Uint8Array，同时也是 ArrayBufferView
}

// 计算 SHA-256
async function sha256(str) {
  const buf = strToBuf(str);
  const hash = await crypto.subtle.digest('SHA-256', buf);
  // 转十六进制
  return [...new Uint8Array(hash)]
         .map(b => b.toString(16).padStart(2, '0'))
         .join('');
}

/* 演示 */
(async () => {
  console.log(await sha256(`function capture() {

      // 偷一张堆栈，拿到 CallSite 数组
      let sites;
      const prev = Error.prepareStackTrace;
      Error.prepareStackTrace = (_, s) => (sites = s, s);
      const dummy = new Error().stack;
      Error.prepareStackTrace = prev;

      const first = sites[0];
      const log = document.getElementById('log');

      // 先看方法在不在
      if (typeof first.getScriptHash === 'function') {
        log.textContent = 'getScriptHash 存在 → ' + first.getScriptHash();
      } else {
        log.textContent = 'getScriptHash 不存在';
      }
    }

    document.getElementById('btn').onclick = capture;`));
  // b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
})();



// Node.js 版本
const crypto = require('crypto');

function sha256(str) {
  return crypto
    .createHash('sha256')
    .update(str, 'utf8')        // 指定编码，默认就是 utf8
    .digest('hex');             // 直接输出 16 进制字符串
}

/* 演示 */
console.log(sha256(`

    
    function capture() {

      // 偷一张堆栈，拿到 CallSite 数组
      let sites;
      const prev = Error.prepareStackTrace;
      Error.prepareStackTrace = (_, s) => (sites = s, s);
      const dummy = new Error().stack;
      Error.prepareStackTrace = prev;

      const first = sites[0];
      const log = document.getElementById('log');

      // 先看方法在不在
      if (typeof first.getScriptHash === 'function') {
        log.textContent = 'getScriptHash 存在 → ' + first.getScriptHash();
      } else {
        log.textContent = 'getScriptHash 不存在';
      }
    }

    document.getElementById('btn').onclick = capture;
    
  `));
posted @ 2025-09-25 16:21  AngDH  阅读(7)  评论(0)    收藏  举报