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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
var subscriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"]
.getService(Ci.mozIJSSubScriptLoader);
/**
* Start a new RIL worker.
*
* @param custom_ns
* Namespace with symbols to be injected into the new worker
* namespace.
*
* @return an object that represents the worker's namespace.
*
* @note that this does not start an actual worker thread. The worker
* is executed on the main thread, within a separate namespace object.
*/
function newWorker(custom_ns) {
let worker_ns = {
importScripts: function() {
Array.slice(arguments).forEach(function(script) {
if (!script.startsWith("resource:")) {
script = "resource://gre/modules/" + script;
}
subscriptLoader.loadSubScript(script, this);
}, this);
},
postRILMessage: function(message) {
},
postMessage: function(message) {
},
// Define these variables inside the worker scope so ES5 strict mode
// doesn't flip out.
onmessage: undefined,
onerror: undefined,
DEBUG: true
};
// The 'self' variable in a worker points to the worker's own namespace.
worker_ns.self = worker_ns;
// Copy the custom definitions over.
for (let key in custom_ns) {
worker_ns[key] = custom_ns[key];
}
// fake require() for toolkit/components/workerloader/require.js
let require = (function() {
return function require(script) {
worker_ns.module = {};
worker_ns.importScripts(script);
return worker_ns;
}
})();
Object.freeze(require);
Object.defineProperty(worker_ns, "require", {
value: require,
enumerable: true,
configurable: false
});
// Load the RIL worker itself.
worker_ns.importScripts("ril_worker.js");
// Register at least one client.
worker_ns.ContextPool.registerClient({ clientId: 0 });
return worker_ns;
}
/**
* Create a buffered RIL worker.
*
* @return A worker object that stores sending octets in a internal buffer.
*/
function newUint8Worker() {
let worker = newWorker();
let index = 0; // index for read
let buf = [];
let context = worker.ContextPool._contexts[0];
context.Buf.writeUint8 = function(value) {
buf.push(value);
};
context.Buf.readUint8 = function() {
return buf[index++];
};
context.Buf.seekIncoming = function(offset) {
index += offset;
};
context.Buf.getReadAvailable = function() {
return buf.length - index;
};
worker.debug = do_print;
return worker;
}
/**
* Create a worker that keeps posted chrome message.
*/
function newInterceptWorker() {
let postedMessage;
let worker = newWorker({
postRILMessage: function(data) {
},
postMessage: function(message) {
postedMessage = message;
}
});
return {
get postedMessage() {
return postedMessage;
},
get worker() {
return worker;
}
};
}
/**
* Create a parcel suitable for postRILMessage().
*
* @param fakeParcelSize
* Value to be written to parcel size field for testing
* incorrect/incomplete parcel reading. Replaced with correct
* one determined length of data if negative.
* @param response
* Response code of the incoming parcel.
* @param request
* Request code of the incoming parcel.
* @param data
* Extra data to be appended.
*
* @return an Uint8Array carrying all parcel data.
*/
function newIncomingParcel(fakeParcelSize, response, request, data) {
const UINT32_SIZE = 4;
const PARCEL_SIZE_SIZE = 4;
let realParcelSize = data.length + 2 * UINT32_SIZE;
let buffer = new ArrayBuffer(realParcelSize + PARCEL_SIZE_SIZE);
let bytes = new Uint8Array(buffer);
let writeIndex = 0;
function writeUint8(value) {
bytes[writeIndex] = value;
++writeIndex;
}
function writeInt32(value) {
writeUint8(value & 0xff);
writeUint8((value >> 8) & 0xff);
writeUint8((value >> 16) & 0xff);
writeUint8((value >> 24) & 0xff);
}
function writeParcelSize(value) {
writeUint8((value >> 24) & 0xff);
writeUint8((value >> 16) & 0xff);
writeUint8((value >> 8) & 0xff);
writeUint8(value & 0xff);
}
if (fakeParcelSize < 0) {
fakeParcelSize = realParcelSize;
}
writeParcelSize(fakeParcelSize);
writeInt32(response);
writeInt32(request);
// write parcel data
for (let ii = 0; ii < data.length; ++ii) {
writeUint8(data[ii]);
}
return bytes;
}
/**
* Create a parcel buffer which represents the hex string.
*
* @param hexString
* The HEX string to be converted.
*
* @return an Uint8Array carrying all parcel data.
*/
function hexStringToParcelByteArrayData(hexString) {
let length = Math.ceil((hexString.length / 2));
let bytes = new Uint8Array(4 + length);
bytes[0] = length & 0xFF;
bytes[1] = (length >> 8) & 0xFF;
bytes[2] = (length >> 16) & 0xFF;
bytes[3] = (length >> 24) & 0xFF;
for (let i = 0; i < length; i ++) {
bytes[i + 4] = Number.parseInt(hexString.substr(i * 2, 2), 16);
}
return bytes;
}
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