const BinaryOutputStream = Components.Constructor("@mozilla.org/binaryoutputstream;1", "nsIBinaryOutputStream", "setOutputStream"); // this is simply a hex dump of a red square .PNG image const RED_SQUARE = [ 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x08, 0x02, 0x00, 0x00, 0x00, 0xFC, 0x18, 0xED, 0xA3, 0x00, 0x00, 0x00, 0x01, 0x73, 0x52, 0x47, 0x42, 0x00, 0xAE, 0xCE, 0x1C, 0xE9, 0x00, 0x00, 0x00, 0x28, 0x49, 0x44, 0x41, 0x54, 0x48, 0xC7, 0xED, 0xCD, 0x41, 0x0D, 0x00, 0x00, 0x08, 0x04, 0xA0, 0xD3, 0xFE, 0x9D, 0x35, 0x85, 0x0F, 0x37, 0x28, 0x40, 0x4D, 0x6E, 0x75, 0x04, 0x02, 0x81, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0xC1, 0x93, 0x60, 0x01, 0xA3, 0xC4, 0x01, 0x3F, 0x58, 0x1D, 0xEF, 0x27, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82 ]; function handleRequest(request, response) { var query = {}; request.queryString.split('&').forEach(function (val) { var [name, value] = val.split('='); query[name] = unescape(value); }); response.setHeader("Cache-Control", "no-cache"); response.setStatusLine(request.httpVersion, 200, "OK"); response.setHeader("Content-Type", "text/plain", false); var log = getState("bug-879963-request-log") || ""; var stream = new BinaryOutputStream(response.bodyOutputStream); if (query["q"] == "init") { log = "init"; // initialize the log, and return a PNG image response.setHeader("Content-Type", "image/png", false); stream.writeByteArray(RED_SQUARE, RED_SQUARE.length); } else if (query["q"] == "image") { log = log + ";" + query["q"]; response.setHeader("Content-Type", "image/png", false); stream.writeByteArray(RED_SQUARE, RED_SQUARE.length); } else if (query["q"] == "font") { log = log + ";" + query["q"]; // we don't provide a real font; that's ok, OTS will just reject it response.write("Junk"); } else if (query["q"] == "report") { // don't include the actual "report" request in the log we return response.write(log); } else { log = log + ";" + query["q"]; response.setStatusLine(request.httpVersion, 404, "Not Found"); } setState("bug-879963-request-log", log); }