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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
const CC = Components.Constructor;
const BinaryInputStream = CC(
"@mozilla.org/binaryinputstream;1",
"nsIBinaryInputStream",
"setInputStream"
);
function DEBUG(str) {
// dump("********** " + str + "\n");
}
function setOurState(data) {
x = {
data,
QueryInterface(iid) {
return this;
},
};
x.wrappedJSObject = x;
setObjectState("beacon-handler", x);
DEBUG("our state is " + data);
}
function getOurState() {
var data;
getObjectState("beacon-handler", function (x) {
// x can be null if no one has set any state yet
if (x) {
data = x.wrappedJSObject.data;
}
});
return data;
}
function handleRequest(request, response) {
DEBUG("Entered request handler");
response.setHeader("Cache-Control", "no-cache", false);
function finishControlResponse(response) {
DEBUG("********* sending out the control GET response");
var data = getState("beaconData");
var mimetype = getState("beaconMimetype");
DEBUG("GET was sending : " + data + "\n");
DEBUG("GET was sending : " + mimetype + "\n");
var result = {
data,
mimetype,
};
response.write(JSON.stringify(result));
setOurState(null);
}
if (request.method == "GET") {
DEBUG(" ------------ GET --------------- ");
response.setHeader("Content-Type", "application/json", false);
switch (request.queryString) {
case "getLastBeaconCors":
// Allow CORS responses of the last beacon
var originHeader = request.getHeader("origin");
response.setHeader(
"Access-Control-Allow-Headers",
"content-type",
false
);
response.setHeader("Access-Control-Allow-Methods", "POST, GET", false);
response.setHeader("Access-Control-Allow-Origin", originHeader, false);
response.setHeader("Access-Control-Allow-Credentials", "true", false);
// fallthrough
case "getLastBeacon":
var state = getOurState();
if (state === "unblocked") {
finishControlResponse(response);
} else {
DEBUG("GET has arrived, but POST has not, blocking response!");
setOurState(response);
response.processAsync();
}
break;
default:
response.setStatusLine(request.httpVersion, 400, "Bad Request");
break;
}
return;
}
if (request.method == "POST") {
DEBUG(" ------------ POST --------------- ");
var body = new BinaryInputStream(request.bodyInputStream);
var avail;
var bytes = [];
while ((avail = body.available()) > 0) {
Array.prototype.push.apply(bytes, body.readByteArray(avail));
}
var data = "";
for (var i = 0; i < bytes.length; i++) {
// We are only passing strings at this point.
if (bytes[i] < 32) {
continue;
}
var charcode = String.fromCharCode(bytes[i]);
data += charcode;
}
var mimetype = "";
if (request.hasHeader("Content-Type")) {
mimetype = request.getHeader("Content-Type");
}
// check to see if this is form data.
if (mimetype.indexOf("multipart/form-data") != -1) {
// trim the mime type to make testing easier.
mimetype = "multipart/form-data";
// Extract only the form-data name.
var pattern = /; name=\"(.+)\";/;
data = data.split(pattern)[1];
}
DEBUG("********** POST was sending : " + data + "\n");
DEBUG("********** POST was sending : " + mimetype + "\n");
setState("beaconData", data);
setState("beaconMimetype", mimetype);
response.setHeader("Content-Type", "text/plain", false);
response.write("ok");
var blockedResponse = getOurState();
if (typeof blockedResponse == "object" && blockedResponse) {
DEBUG("GET is already pending, finishing!");
finishControlResponse(blockedResponse);
blockedResponse.finish();
} else {
DEBUG("GET has not arrived, marking it as unblocked");
setOurState("unblocked");
}
return;
}
response.setStatusLine(request.httpVersion, 402, "Bad Request");
}