mirror of https://github.com/gchq/CyberChef.git
135 lines
3.1 KiB
JavaScript
135 lines
3.1 KiB
JavaScript
/**
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* Web Worker to handle communications between the front-end and the core.
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*
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2017
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* @license Apache-2.0
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*/
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import "babel-polyfill";
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import Chef from "./Chef.js";
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import OperationConfig from "./config/MetaConfig.js";
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import OpModules from "./config/modules/Default.js";
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// Set up Chef instance
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self.chef = new Chef();
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self.OpModules = OpModules;
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self.OperationConfig = OperationConfig;
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// Tell the app that the worker has loaded and is ready to operate
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self.postMessage({
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action: "workerLoaded",
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data: {}
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});
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/**
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* Respond to message from parent thread.
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*
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* Messages should have the following format:
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* {
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* action: "bake" | "silentBake",
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* data: {
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* input: {string},
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* recipeConfig: {[Object]},
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* options: {Object},
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* progress: {number},
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* step: {boolean}
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* } | undefined
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* }
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*/
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self.addEventListener("message", function(e) {
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// Handle message
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switch (e.data.action) {
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case "bake":
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bake(e.data.data);
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break;
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case "silentBake":
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silentBake(e.data.data);
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break;
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case "docURL":
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// Used to set the URL of the current document so that scripts can be
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// imported into an inline worker.
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self.docURL = e.data.data;
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break;
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default:
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break;
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}
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});
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/**
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* Baking handler
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*
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* @param {Object} data
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*/
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async function bake(data) {
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// Ensure the relevant modules are loaded
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loadRequiredModules(data.recipeConfig);
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try {
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const response = await self.chef.bake(
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data.input, // The user's input
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data.recipeConfig, // The configuration of the recipe
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data.options, // Options set by the user
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data.progress, // The current position in the recipe
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data.step // Whether or not to take one step or execute the whole recipe
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);
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self.postMessage({
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action: "bakeSuccess",
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data: response
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});
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} catch (err) {
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self.postMessage({
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action: "bakeError",
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data: err.message
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});
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}
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}
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/**
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* Silent baking handler
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*/
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function silentBake(data) {
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const duration = self.chef.silentBake(data.recipeConfig);
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self.postMessage({
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action: "silentBakeComplete",
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data: duration
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});
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}
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/**
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* Checks that all required modules are loaded and loads them if not.
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*
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* @param {Object} recipeConfig
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*/
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function loadRequiredModules(recipeConfig) {
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recipeConfig.forEach(op => {
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let module = self.OperationConfig[op.op].module;
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if (!OpModules.hasOwnProperty(module)) {
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console.log("Loading module " + module);
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self.sendStatusMessage("Loading module " + module);
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self.importScripts(self.docURL + "/" + module + ".js");
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}
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});
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}
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/**
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* Send status update to the app.
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*
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* @param {string} msg
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*/
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self.sendStatusMessage = function(msg) {
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self.postMessage({
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action: "statusMessage",
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data: msg
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});
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};
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