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Comment by nicoburns

4 days ago

I believe they're doing a meta-tag redirect (possibly inside a noscript tag?) in at least some cases. Source: I'm developing a web engine that doesn't have JS support.

6 comments

nicoburns

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ronjouch  4 days ago

That's exactly what they are doing:

    <!DOCTYPE html>
    <html>
      <head><title>Google Search</title>...</head>
      <body>
        <noscript>
          <meta content="0;url=/httpservice/retry/enablejs?sei=..." http-equiv="refresh">
          <div style="display:block">Please click <a href="/httpservice/retry/enablejs?sei=...">here</a> if you are not redirected within a few seconds.</div>
        </noscript>...

superkuh  4 days ago

You're correct.

    <noscript><meta content="0;url=/httpservice/retry/enablejs?sei=a3qIZ42cGcvcp84P5p_mwQI" http-equiv="refresh"><style>table,div,span,p{display:none}</style><div style="display:block">Please click <a href="/httpservice/retry/enablejs?sei=a3qIZ42cGcvcp84P5p_mwQI">here</a> if you are not redirected within a few seconds.</div></noscript></header>

  • superkuh  4 days ago

    Here's a skeleton overlay.js for an old style firefox extension to mitigate the meta-redirect part of the blocking.

        var remover = {
        init: function() {
            var appcontent = document.getElementById("appcontent");
            if(appcontent) {
                appcontent.addEventListener("DOMContentLoaded", 
                    function(e) {
                        var doc = e.originalTarget;
                        if(doc instanceof HTMLDocument) {
                            var noscripts = doc.getElementsByTagName('noscript');
                            for(var i = 0; i < noscripts.length; i++) {
                                //if(noscripts[i].innerHTML.indexOf('meta content="0;url=/httpservice/retry/enablejs?sei=') != -1) {
                                    noscripts[i].parentNode.removeChild(noscripts[i]);
                                //}
                            }
                        }
                    }, true);
            }
        }

    };

    window.addEventListener("load", function() { remover.init(); }, false);