로그인 페이지에서 Shared Box URL 추출하기

Source: Dev.to

Windows에서 Box 파일 링크를 열면 브라우저가 공유된 콘텐츠로 바로 이동하는 대신 Box 로그인 페이지로 리다이렉트될 수 있습니다. 로그인 페이지 URL에는 원래 목적지 URL을 포함하는 쿼리 파라미터가 들어 있는 경우가 많습니다. 이 스니펫은 해당 목적지 URL을 추출해 클립보드에 복사하여 공유 가능한 링크를 빠르게 복구할 수 있게 해줍니다.

JavaScript snippet

(function () {
  const hostOrig = location.host;

  // Skip if host does not end with box.com
  if (!hostOrig.endsWith('box.com')) return;

  const usp = new URLSearchParams(location.search);
  const path = usp.get('redirect_url');

  // Skip if redirect_url is missing or empty
  if (!path) return;

  const host = hostOrig
    .split('.')
    .filter((part) => part !== 'account')
    .join('.');

  // If redirect_url is an absolute URL, use it as‑is; otherwise build https://{host}{path}
  const url = 'https://' + host + path;

  const tempTextarea = document.createElement('textarea');
  tempTextarea.textContent = url;
  document.body.appendChild(tempTextarea);
  tempTextarea.select();
  document.execCommand('copy');
  document.body.removeChild(tempTextarea);
})();

Bookmarklet

javascript:!function(){const hostOrig=location.host;if(!hostOrig.endsWith("box.com"))return;const path=new URLSearchParams(location.search).get("redirect_url");if(!path)return;const url="https://"+hostOrig.split(".").filter(part=>"account"!==part).join(".")+path;const tempTextarea=document.createElement("textarea");tempTextarea.textContent=url;document.body.appendChild(tempTextarea);tempTextarea.select();document.execCommand("copy");document.body.removeChild(tempTextarea)}();

How it works

• Parse the query string using URLSearchParams to read parameters on the current page.
• Extract redirect_url to obtain the path (or full redirect target) that Box stored when it sent you to the login flow.
• Rebuild the host name by removing the account subdomain (common on Box login pages) so the destination points to the main Box domain.
• Construct the final URL by combining https://, the adjusted host, and the redirect path.
• Copy the result to the clipboard by temporarily creating a <textarea>, selecting its contents, and executing the copy command.
• Clean up by removing the temporary element from the page.

Using this approach, you can recover a share‑ready URL directly from the Box login screen without manually decoding or editing the address bar.