680 lines
21 KiB
JavaScript
Executable File
680 lines
21 KiB
JavaScript
Executable File
/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*/
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import Utils from "../core/Utils";
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import {fromBase64} from "../core/lib/Base64";
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import Manager from "./Manager";
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import HTMLCategory from "./HTMLCategory";
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import HTMLOperation from "./HTMLOperation";
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import Split from "split.js";
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/**
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* HTML view for CyberChef responsible for building the web page and dealing with all user
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* interactions.
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*/
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class App {
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/**
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* App constructor.
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*
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* @param {CatConf[]} categories - The list of categories and operations to be populated.
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* @param {Object.<string, OpConf>} operations - The list of operation configuration objects.
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* @param {String[]} defaultFavourites - A list of default favourite operations.
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* @param {Object} options - Default setting for app options.
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*/
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constructor(categories, operations, defaultFavourites, defaultOptions) {
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this.categories = categories;
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this.operations = operations;
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this.dfavourites = defaultFavourites;
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this.doptions = defaultOptions;
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this.options = Object.assign({}, defaultOptions);
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this.manager = new Manager(this);
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this.baking = false;
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this.autoBake_ = false;
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this.autoBakePause = false;
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this.progress = 0;
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this.ingId = 0;
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}
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/**
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* This function sets up the stage and creates listeners for all events.
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*
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* @fires Manager#appstart
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*/
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setup() {
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document.dispatchEvent(this.manager.appstart);
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this.initialiseSplitter();
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this.loadLocalStorage();
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this.populateOperationsList();
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this.manager.setup();
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this.resetLayout();
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this.setCompileMessage();
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log.debug("App loaded");
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this.appLoaded = true;
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this.loadURIParams();
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this.loaded();
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}
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/**
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* Fires once all setup activities have completed.
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*
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* @fires Manager#apploaded
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*/
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loaded() {
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// Check that both the app and the worker have loaded successfully, and that
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// we haven't already loaded before attempting to remove the loading screen.
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if (!this.workerLoaded || !this.appLoaded ||
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!document.getElementById("loader-wrapper")) return;
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// Trigger CSS animations to remove preloader
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document.body.classList.add("loaded");
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// Wait for animations to complete then remove the preloader and loaded style
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// so that the animations for existing elements don't play again.
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setTimeout(function() {
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document.getElementById("loader-wrapper").remove();
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document.body.classList.remove("loaded");
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}, 1000);
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// Clear the loading message interval
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clearInterval(window.loadingMsgsInt);
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// Remove the loading error handler
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window.removeEventListener("error", window.loadingErrorHandler);
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document.dispatchEvent(this.manager.apploaded);
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}
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/**
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* An error handler for displaying the error to the user.
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*
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* @param {Error} err
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* @param {boolean} [logToConsole=false]
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*/
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handleError(err, logToConsole) {
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if (logToConsole) log.error(err);
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const msg = err.displayStr || err.toString();
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this.alert(msg, this.options.errorTimeout, !this.options.showErrors);
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}
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/**
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* Asks the ChefWorker to bake the current input using the current recipe.
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*
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* @param {boolean} [step] - Set to true if we should only execute one operation instead of the
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* whole recipe.
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*/
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bake(step=false) {
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if (this.baking) return;
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// Reset attemptHighlight flag
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this.options.attemptHighlight = true;
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this.manager.worker.bake(
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this.getInput(), // The user's input
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this.getRecipeConfig(), // The configuration of the recipe
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this.options, // Options set by the user
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this.progress, // The current position in the recipe
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step // Whether or not to take one step or execute the whole recipe
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);
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}
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/**
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* Runs Auto Bake if it is set.
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*/
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autoBake() {
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// If autoBakePause is set, we are loading a full recipe (and potentially input), so there is no
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// need to set the staleness indicator. Just exit and wait until auto bake is called after loading
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// has completed.
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if (this.autoBakePause) return false;
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if (this.autoBake_ && !this.baking) {
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log.debug("Auto-baking");
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this.bake();
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} else {
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this.manager.controls.showStaleIndicator();
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}
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}
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/**
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* Runs a silent bake, forcing the browser to load and cache all the relevant JavaScript code needed
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* to do a real bake.
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*
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* The output will not be modified (hence "silent" bake). This will only actually execute the recipe
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* if auto-bake is enabled, otherwise it will just wake up the ChefWorker with an empty recipe.
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*/
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silentBake() {
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let recipeConfig = [];
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if (this.autoBake_) {
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// If auto-bake is not enabled we don't want to actually run the recipe as it may be disabled
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// for a good reason.
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recipeConfig = this.getRecipeConfig();
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}
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this.manager.worker.silentBake(recipeConfig);
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}
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/**
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* Gets the user's input data.
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*
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* @returns {string}
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*/
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getInput() {
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return this.manager.input.get();
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}
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/**
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* Sets the user's input data.
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*
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* @param {string} input - The string to set the input to
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* @param {boolean} [silent=false] - Suppress statechange event
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*/
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setInput(input, silent=false) {
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this.manager.input.set(input, silent);
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}
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/**
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* Populates the operations accordion list with the categories and operations specified in the
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* view constructor.
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*
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* @fires Manager#oplistcreate
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*/
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populateOperationsList() {
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// Move edit button away before we overwrite it
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document.body.appendChild(document.getElementById("edit-favourites"));
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let html = "";
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let i;
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for (i = 0; i < this.categories.length; i++) {
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const catConf = this.categories[i],
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selected = i === 0,
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cat = new HTMLCategory(catConf.name, selected);
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for (let j = 0; j < catConf.ops.length; j++) {
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const opName = catConf.ops[j];
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if (!this.operations.hasOwnProperty(opName)) {
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log.warn(`${opName} could not be found.`);
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continue;
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}
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const op = new HTMLOperation(opName, this.operations[opName], this, this.manager);
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cat.addOperation(op);
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}
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html += cat.toHtml();
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}
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document.getElementById("categories").innerHTML = html;
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const opLists = document.querySelectorAll("#categories .op-list");
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for (i = 0; i < opLists.length; i++) {
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opLists[i].dispatchEvent(this.manager.oplistcreate);
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}
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// Add edit button to first category (Favourites)
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document.querySelector("#categories a").appendChild(document.getElementById("edit-favourites"));
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}
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/**
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* Sets up the adjustable splitter to allow the user to resize areas of the page.
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*/
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initialiseSplitter() {
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this.columnSplitter = Split(["#operations", "#recipe", "#IO"], {
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sizes: [20, 30, 50],
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minSize: [240, 370, 450],
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gutterSize: 4,
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onDrag: function() {
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this.manager.recipe.adjustWidth();
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}.bind(this)
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});
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this.ioSplitter = Split(["#input", "#output"], {
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direction: "vertical",
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gutterSize: 4
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});
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this.resetLayout();
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}
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/**
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* Loads the information previously saved to the HTML5 local storage object so that user options
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* and favourites can be restored.
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*/
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loadLocalStorage() {
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// Load options
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let lOptions;
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if (this.isLocalStorageAvailable() && localStorage.options !== undefined) {
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lOptions = JSON.parse(localStorage.options);
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}
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this.manager.options.load(lOptions);
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// Load favourites
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this.loadFavourites();
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}
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/**
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* Loads the user's favourite operations from the HTML5 local storage object and populates the
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* Favourites category with them.
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* If the user currently has no saved favourites, the defaults from the view constructor are used.
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*/
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loadFavourites() {
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let favourites;
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if (this.isLocalStorageAvailable()) {
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favourites = localStorage.favourites && localStorage.favourites.length > 2 ?
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JSON.parse(localStorage.favourites) :
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this.dfavourites;
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favourites = this.validFavourites(favourites);
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this.saveFavourites(favourites);
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} else {
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favourites = this.dfavourites;
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}
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const favCat = this.categories.filter(function(c) {
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return c.name === "Favourites";
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})[0];
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if (favCat) {
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favCat.ops = favourites;
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} else {
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this.categories.unshift({
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name: "Favourites",
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ops: favourites
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});
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}
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}
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/**
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* Filters the list of favourite operations that the user had stored and removes any that are no
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* longer available. The user is notified if this is the case.
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* @param {string[]} favourites - A list of the user's favourite operations
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* @returns {string[]} A list of the valid favourites
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*/
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validFavourites(favourites) {
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const validFavs = [];
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for (let i = 0; i < favourites.length; i++) {
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if (this.operations.hasOwnProperty(favourites[i])) {
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validFavs.push(favourites[i]);
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} else {
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this.alert(`The operation "${Utils.escapeHtml(favourites[i])}" is no longer available. ` +
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"It has been removed from your favourites.");
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}
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}
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return validFavs;
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}
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/**
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* Saves a list of favourite operations to the HTML5 local storage object.
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*
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* @param {string[]} favourites - A list of the user's favourite operations
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*/
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saveFavourites(favourites) {
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if (!this.isLocalStorageAvailable()) {
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this.alert(
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"Your security settings do not allow access to local storage so your favourites cannot be saved.",
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5000
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);
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return false;
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}
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localStorage.setItem("favourites", JSON.stringify(this.validFavourites(favourites)));
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}
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/**
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* Resets favourite operations back to the default as specified in the view constructor and
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* refreshes the operation list.
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*/
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resetFavourites() {
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this.saveFavourites(this.dfavourites);
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this.loadFavourites();
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this.populateOperationsList();
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this.manager.recipe.initialiseOperationDragNDrop();
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}
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/**
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* Adds an operation to the user's favourites.
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*
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* @param {string} name - The name of the operation
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*/
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addFavourite(name) {
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const favourites = JSON.parse(localStorage.favourites);
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if (favourites.indexOf(name) >= 0) {
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this.alert(`'${name}' is already in your favourites`, 3000);
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return;
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}
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favourites.push(name);
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this.saveFavourites(favourites);
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this.loadFavourites();
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this.populateOperationsList();
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this.manager.recipe.initialiseOperationDragNDrop();
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}
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/**
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* Checks for input and recipe in the URI parameters and loads them if present.
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*/
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loadURIParams() {
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// Load query string or hash from URI (depending on which is populated)
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// We prefer getting the hash by splitting the href rather than referencing
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// location.hash as some browsers (Firefox) automatically URL decode it,
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// which cause issues.
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const params = window.location.search ||
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window.location.href.split("#")[1] ||
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window.location.hash;
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this.uriParams = Utils.parseURIParams(params);
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this.autoBakePause = true;
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// Read in recipe from URI params
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if (this.uriParams.recipe) {
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try {
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const recipeConfig = Utils.parseRecipeConfig(this.uriParams.recipe);
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this.setRecipeConfig(recipeConfig);
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} catch (err) {}
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} else if (this.uriParams.op) {
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// If there's no recipe, look for single operations
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this.manager.recipe.clearRecipe();
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// Search for nearest match and add it
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const matchedOps = this.manager.ops.filterOperations(this.uriParams.op, false);
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if (matchedOps.length) {
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this.manager.recipe.addOperation(matchedOps[0].name);
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}
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// Populate search with the string
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const search = document.getElementById("search");
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search.value = this.uriParams.op;
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search.dispatchEvent(new Event("search"));
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}
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// Read in input data from URI params
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if (this.uriParams.input) {
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try {
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const inputData = fromBase64(this.uriParams.input);
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this.setInput(inputData, true);
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} catch (err) {}
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}
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this.autoBakePause = false;
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window.dispatchEvent(this.manager.statechange);
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}
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/**
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* Returns the next ingredient ID and increments it for next time.
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*
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* @returns {number}
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*/
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nextIngId() {
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return this.ingId++;
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}
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/**
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* Gets the current recipe configuration.
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*
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* @returns {Object[]}
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*/
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getRecipeConfig() {
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return this.manager.recipe.getConfig();
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}
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/**
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* Given a recipe configuration, sets the recipe to that configuration.
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*
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* @fires Manager#statechange
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* @param {Object[]} recipeConfig - The recipe configuration
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*/
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setRecipeConfig(recipeConfig) {
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document.getElementById("rec-list").innerHTML = null;
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// Pause auto-bake while loading but don't modify `this.autoBake_`
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// otherwise `manualBake` cannot trigger.
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this.autoBakePause = true;
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for (let i = 0; i < recipeConfig.length; i++) {
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const item = this.manager.recipe.addOperation(recipeConfig[i].op);
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// Populate arguments
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const args = item.querySelectorAll(".arg");
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for (let j = 0; j < args.length; j++) {
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if (recipeConfig[i].args[j] === undefined) continue;
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if (args[j].getAttribute("type") === "checkbox") {
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// checkbox
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args[j].checked = recipeConfig[i].args[j];
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} else if (args[j].classList.contains("toggle-string")) {
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// toggleString
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args[j].value = recipeConfig[i].args[j].string;
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args[j].parentNode.parentNode.querySelector("button").innerHTML =
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Utils.escapeHtml(recipeConfig[i].args[j].option);
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} else {
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// all others
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args[j].value = recipeConfig[i].args[j];
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}
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}
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// Set disabled and breakpoint
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if (recipeConfig[i].disabled) {
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item.querySelector(".disable-icon").click();
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}
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if (recipeConfig[i].breakpoint) {
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item.querySelector(".breakpoint").click();
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}
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this.progress = 0;
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}
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// Unpause auto bake
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this.autoBakePause = false;
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}
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/**
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* Resets the splitter positions to default.
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*/
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resetLayout() {
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this.columnSplitter.setSizes([20, 30, 50]);
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this.ioSplitter.setSizes([50, 50]);
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this.manager.recipe.adjustWidth();
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}
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/**
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* Sets the compile message.
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*/
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setCompileMessage() {
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// Display time since last build and compile message
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const now = new Date(),
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timeSinceCompile = Utils.fuzzyTime(now.getTime() - window.compileTime);
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// Calculate previous version to compare to
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const prev = PKG_VERSION.split(".").map(n => {
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return parseInt(n, 10);
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});
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if (prev[2] > 0) prev[2]--;
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else if (prev[1] > 0) prev[1]--;
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else prev[0]--;
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//const compareURL = `https://github.com/gchq/CyberChef/compare/v${prev.join(".")}...v${PKG_VERSION}`;
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let compileInfo = `<a href='https://github.com/gchq/CyberChef/blob/master/CHANGELOG.md'>Last build: ${timeSinceCompile.substr(0, 1).toUpperCase() + timeSinceCompile.substr(1)} ago</a>`;
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if (window.compileMessage !== "") {
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compileInfo += " - " + window.compileMessage;
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}
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const notice = document.getElementById("notice");
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notice.innerHTML = compileInfo;
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notice.setAttribute("title", Utils.stripHtmlTags(window.compileMessage));
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}
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/**
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* Determines whether the browser supports Local Storage and if it is accessible.
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*
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* @returns {boolean}
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*/
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isLocalStorageAvailable() {
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try {
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if (!localStorage) return false;
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return true;
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} catch (err) {
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// Access to LocalStorage is denied
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return false;
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}
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}
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/**
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* Pops up a message to the user and writes it to the console log.
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*
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* @param {string} str - The message to display (HTML supported)
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* @param {number} timeout - The number of milliseconds before the alert closes automatically
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* 0 for never (until the user closes it)
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* @param {boolean} [silent=false] - Don't show the message in the popup, only print it to the
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* console
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*
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* @example
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* // Pops up a box with the message "Error: Something has gone wrong!" that will need to be
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* // dismissed by the user.
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* this.alert("Error: Something has gone wrong!", 0);
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*
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* // Pops up a box with the message "Happy Christmas!" that will disappear after 5 seconds.
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|
* this.alert("Happy Christmas!", 5000);
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|
*/
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alert(str, timeout, silent) {
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const time = new Date();
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|
|
|
log.info("[" + time.toLocaleString() + "] " + str);
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if (silent) return;
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|
|
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timeout = timeout || 0;
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|
|
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this.currentSnackbar = $.snackbar({
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content: str,
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|
timeout: timeout,
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|
htmlAllowed: true,
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|
onClose: () => {
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|
this.currentSnackbar.remove();
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|
}
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|
});
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|
}
|
|
|
|
|
|
/**
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|
* Pops up a box asking the user a question and sending the answer to a specified callback function.
|
|
*
|
|
* @param {string} title - The title of the box
|
|
* @param {string} body - The question (HTML supported)
|
|
* @param {function} callback - A function accepting one boolean argument which handles the
|
|
* response e.g. function(answer) {...}
|
|
* @param {Object} [scope=this] - The object to bind to the callback function
|
|
*
|
|
* @example
|
|
* // Pops up a box asking if the user would like a cookie. Prints the answer to the console.
|
|
* this.confirm("Question", "Would you like a cookie?", function(answer) {console.log(answer);});
|
|
*/
|
|
confirm(title, body, callback, scope) {
|
|
scope = scope || this;
|
|
document.getElementById("confirm-title").innerHTML = title;
|
|
document.getElementById("confirm-body").innerHTML = body;
|
|
document.getElementById("confirm-modal").style.display = "block";
|
|
|
|
this.confirmClosed = false;
|
|
$("#confirm-modal").modal()
|
|
.one("show.bs.modal", function(e) {
|
|
this.confirmClosed = false;
|
|
}.bind(this))
|
|
.one("click", "#confirm-yes", function() {
|
|
this.confirmClosed = true;
|
|
callback.bind(scope)(true);
|
|
$("#confirm-modal").modal("hide");
|
|
}.bind(this))
|
|
.one("hide.bs.modal", function(e) {
|
|
if (!this.confirmClosed)
|
|
callback.bind(scope)(false);
|
|
this.confirmClosed = true;
|
|
}.bind(this));
|
|
}
|
|
|
|
|
|
/**
|
|
* Handler for CyerChef statechange events.
|
|
* Fires whenever the input or recipe changes in any way.
|
|
*
|
|
* @listens Manager#statechange
|
|
* @param {event} e
|
|
*/
|
|
stateChange(e) {
|
|
this.progress = 0;
|
|
this.autoBake();
|
|
|
|
// Set title
|
|
const recipeConfig = this.getRecipeConfig();
|
|
let title = "CyberChef";
|
|
if (recipeConfig.length === 1) {
|
|
title = `${recipeConfig[0].op} - ${title}`;
|
|
} else if (recipeConfig.length > 1) {
|
|
// See how long the full recipe is
|
|
const ops = recipeConfig.map(op => op.op).join(", ");
|
|
if (ops.length < 45) {
|
|
title = `${ops} - ${title}`;
|
|
} else {
|
|
// If it's too long, just use the first one and say how many more there are
|
|
title = `${recipeConfig[0].op}, ${recipeConfig.length - 1} more - ${title}`;
|
|
}
|
|
}
|
|
document.title = title;
|
|
|
|
// Update the current history state (not creating a new one)
|
|
if (this.options.updateUrl) {
|
|
this.lastStateUrl = this.manager.controls.generateStateUrl(true, true, recipeConfig);
|
|
window.history.replaceState({}, title, this.lastStateUrl);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Handler for the history popstate event.
|
|
* Reloads parameters from the URL.
|
|
*
|
|
* @param {event} e
|
|
*/
|
|
popState(e) {
|
|
this.loadURIParams();
|
|
}
|
|
|
|
}
|
|
|
|
export default App;
|