templates/usr/share/jitsi-meet/static/oidc-adapter.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <script>
      async function getToken(code, path, search, hash) {
        try {
          const _path = encodeURIComponent(path);
          const _search = encodeURIComponent(search);
          const _hash = encodeURIComponent(hash);

          const req = `/oidc/tokenize` +
            `?code=${code}` +
            `&path=${_path}` +
            `&search=${_search}` +
            `&hash=${_hash}`;
          const res = await fetch(req, {
            headers: {
              "Accept": "application/json",
            },
          });

          return await res.json();
        } catch {
          return undefined;
        }
      }

      async function adapter() {
        const qs = new URLSearchParams(window.location.search);
        const err = qs.get("error");
        const sessionState = qs.get("session_state");
        const code = qs.get("code");
        const path = qs.get("path");
        const search = qs.get("search") || "";
        const hash = qs.get("hash") || "";

        if (!path.match("^/")) throw new Error("invalid path");

        let target = `${path}?` +
          `${search}${search ? "&" : ""}` +
          `oidc=unauthorized` +
          `${hash ? "#" : ""}${hash}`;

        if (!err) {
          const token = await getToken(code, path, search, hash);

          if (token) {
            target = `${path}?` +
              `${search}${search ? "&" : ""}` +
              `oidc=authorized` +
              `&jwt=${token}` +
              `${hash ? "#" : ""}${hash}`;
          } else {
            target = `${path}?` +
              `${search}${search ? "&" : ""}` +
              `oidc=failed` +
              `${hash ? "#" : ""}${hash}`;
          }
        }

        window.location = target;
      }
    </script>
  </head>
  <body onload="adapter()">
    adapting...
  </body>
</html>