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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
function setGlobalState(data, key) {
x = {
data,
QueryInterface(iid) {
return this;
},
};
x.wrappedJSObject = x;
setObjectState(key, x);
}
function getGlobalState(key) {
var data;
getObjectState(key, function (x) {
data = x && x.wrappedJSObject.data;
});
return data;
}
function finishBlockedRequest(request, response, query) {
response.setStatusLine(request.httpVersion, 200, "OK");
response.setHeader("Cache-Control", "no-cache", false);
response.setHeader("Content-Type", "application/javascript", false);
response.write("scriptLoaded('" + query[1] + "');");
response.finish();
setGlobalState(undefined, query[1]);
}
function handleRequest(request, response) {
var query = request.queryString.split("&");
switch (query[0]) {
case "blocked":
var alreadyUnblocked = getGlobalState(query[1]);
response.processAsync();
if (alreadyUnblocked === true) {
// the unblock request came before the blocked request, just go on and finish synchronously
finishBlockedRequest(request, response, query);
} else {
setGlobalState(response, query[1]);
}
break;
case "unblock":
response.setStatusLine(request.httpVersion, 200, "OK");
response.setHeader("Cache-Control", "no-cache", false);
response.setHeader("Content-Type", "image/png", false);
response.write("\x89PNG"); // just a broken image is enough for our purpose
var blockedResponse = getGlobalState(query[1]);
if (blockedResponse === undefined) {
// the unblock request came before the blocked request, remember to not block it
setGlobalState(true, query[1]);
} else if (typeof blockedResponse == "object") {
finishBlockedRequest(request, blockedResponse, query);
}
break;
default:
response.setStatusLine(request.httpVersion, 400, "Bad request");
break;
}
}
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