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CyberChef/src/js/views/html/HTMLApp.js

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/* globals Split */
/**
* HTML view for CyberChef responsible for building the web page and dealing with all user
* interactions.
*
* @author n1474335 [n1474335@gmail.com]
* @copyright Crown Copyright 2016
* @license Apache-2.0
*
* @constructor
* @param {CatConf[]} categories - The list of categories and operations to be populated.
* @param {Object.<string, OpConf>} operations - The list of operation configuration objects.
* @param {String[]} default_favourites - A list of default favourite operations.
* @param {Object} options - Default setting for app options.
*/
var HTMLApp = function(categories, operations, default_favourites, default_options) {
this.categories = categories;
this.operations = operations;
this.dfavourites = default_favourites;
this.doptions = default_options;
this.options = Utils.extend({}, default_options);
this.chef = new Chef();
this.manager = new Manager(this);
this.auto_bake_ = false;
this.progress = 0;
this.ing_id = 0;
window.chef = this.chef;
};
/**
* This function sets up the stage and creates listeners for all events.
*
* @fires Manager#appstart
*/
HTMLApp.prototype.setup = function() {
document.dispatchEvent(this.manager.appstart);
this.initialise_splitter();
this.load_local_storage();
this.populate_operations_list();
this.manager.setup();
this.reset_layout();
this.set_compile_message();
this.load_URI_params();
};
/**
* An error handler for displaying the error to the user.
*
* @param {Error} err
*/
HTMLApp.prototype.handle_error = function(err) {
console.error(err);
var msg = err.display_str || err.toString();
this.alert(msg, "danger", this.options.error_timeout, !this.options.show_errors);
};
/**
* Calls the Chef to bake the current input using the current recipe.
*
* @param {boolean} [step] - Set to true if we should only execute one operation instead of the
* whole recipe.
*/
HTMLApp.prototype.bake = function(step) {
var response;
try {
response = this.chef.bake(
this.get_input(), // The user's input
this.get_recipe_config(), // The configuration of the recipe
this.options, // Options set by the user
this.progress, // The current position in the recipe
step // Whether or not to take one step or execute the whole recipe
);
} catch (err) {
this.handle_error(err);
}
if (!response) return;
if (response.error) {
this.handle_error(response.error);
}
this.options = response.options;
this.dish_str = response.type === "html" ? Utils.strip_html_tags(response.result, true) : response.result;
this.progress = response.progress;
this.manager.recipe.update_breakpoint_indicator(response.progress);
this.manager.output.set(response.result, response.type, response.duration);
// If baking took too long, disable auto-bake
if (response.duration > this.options.auto_bake_threshold && this.auto_bake_) {
this.manager.controls.set_auto_bake(false);
this.alert("Baking took longer than " + this.options.auto_bake_threshold +
"ms, Auto Bake has been disabled.", "warning", 5000);
}
};
/**
* Runs Auto Bake if it is set.
*/
HTMLApp.prototype.auto_bake = function() {
if (this.auto_bake_) {
this.bake();
}
};
/**
* Runs a silent bake forcing the browser to load and cache all the relevant JavaScript code needed
* to do a real bake.
*
* The output will not be modified (hence "silent" bake). This will only actually execute the
* recipe if auto-bake is enabled, otherwise it will just load the recipe, ingredients and dish.
*
* @returns {number} - The number of miliseconds it took to run the silent bake.
*/
HTMLApp.prototype.silent_bake = function() {
var start_time = new Date().getTime(),
recipe_config = this.get_recipe_config();
if (this.auto_bake_) {
this.chef.silent_bake(recipe_config);
}
return new Date().getTime() - start_time;
};
/**
* Gets the user's input data.
*
* @returns {string}
*/
HTMLApp.prototype.get_input = function() {
var input = this.manager.input.get();
// Save to session storage in case we need to restore it later
sessionStorage.setItem("input_length", input.length);
sessionStorage.setItem("input", input);
return input;
};
/**
* Sets the user's input data.
*
* @param {string} input - The string to set the input to
*/
HTMLApp.prototype.set_input = function(input) {
sessionStorage.setItem("input_length", input.length);
sessionStorage.setItem("input", input);
this.manager.input.set(input);
};
/**
* Populates the operations accordion list with the categories and operations specified in the
* view constructor.
*
* @fires Manager#oplistcreate
*/
HTMLApp.prototype.populate_operations_list = function() {
// Move edit button away before we overwrite it
document.body.appendChild(document.getElementById("edit-favourites"));
var html = "";
for (var i = 0; i < this.categories.length; i++) {
var cat_conf = this.categories[i],
selected = i === 0,
cat = new HTMLCategory(cat_conf.name, selected);
for (var j = 0; j < cat_conf.ops.length; j++) {
var op_name = cat_conf.ops[j],
op = new HTMLOperation(op_name, this.operations[op_name], this, this.manager);
cat.add_operation(op);
}
html += cat.to_html();
}
document.getElementById("categories").innerHTML = html;
var op_lists = document.querySelectorAll("#categories .op_list");
for (i = 0; i < op_lists.length; i++) {
op_lists[i].dispatchEvent(this.manager.oplistcreate);
}
// Add edit button to first category (Favourites)
document.querySelector("#categories a").appendChild(document.getElementById("edit-favourites"));
};
/**
* Sets up the adjustable splitter to allow the user to resize areas of the page.
*/
HTMLApp.prototype.initialise_splitter = function() {
this.column_splitter = Split(["#operations", "#recipe", "#IO"], {
sizes: [20, 30, 50],
minSize: [240, 325, 500],
gutterSize: 4,
onDrag: this.manager.controls.adjust_width.bind(this.manager.controls)
});
this.io_splitter = Split(["#input", "#output"], {
direction: "vertical",
gutterSize: 4,
});
this.reset_layout();
};
/**
* Loads the information previously saved to the HTML5 local storage object so that user options
* and favourites can be restored.
*/
HTMLApp.prototype.load_local_storage = function() {
// Load options
var l_options;
if (localStorage.options !== undefined) {
l_options = JSON.parse(localStorage.options);
}
this.manager.options.load(l_options);
// Load favourites
this.load_favourites();
};
/**
* Loads the user's favourite operations from the HTML5 local storage object and populates the
* Favourites category with them.
* If the user currently has no saved favourites, the defaults from the view constructor are used.
*/
HTMLApp.prototype.load_favourites = function() {
var favourites = localStorage.favourites &&
localStorage.favourites.length > 2 ?
JSON.parse(localStorage.favourites) :
this.dfavourites;
favourites = this.valid_favourites(favourites);
this.save_favourites(favourites);
var fav_cat = this.categories.filter(function(c) {
return c.name === "Favourites";
})[0];
if (fav_cat) {
fav_cat.ops = favourites;
} else {
this.categories.unshift({
name: "Favourites",
ops: favourites
});
}
};
/**
* Filters the list of favourite operations that the user had stored and removes any that are no
* longer available. The user is notified if this is the case.
* @param {string[]} favourites - A list of the user's favourite operations
* @returns {string[]} A list of the valid favourites
*/
HTMLApp.prototype.valid_favourites = function(favourites) {
var valid_favs = [];
for (var i = 0; i < favourites.length; i++) {
if (this.operations.hasOwnProperty(favourites[i])) {
valid_favs.push(favourites[i]);
} else {
this.alert("The operation \"" + Utils.escape_html(favourites[i]) +
"\" is no longer available. It has been removed from your favourites.", "info");
}
}
return valid_favs;
};
/**
* Saves a list of favourite operations to the HTML5 local storage object.
*
* @param {string[]} favourites - A list of the user's favourite operations
*/
HTMLApp.prototype.save_favourites = function(favourites) {
localStorage.setItem("favourites", JSON.stringify(this.valid_favourites(favourites)));
};
/**
* Resets favourite operations back to the default as specified in the view constructor and
* refreshes the operation list.
*/
HTMLApp.prototype.reset_favourites = function() {
this.save_favourites(this.dfavourites);
this.load_favourites();
this.populate_operations_list();
this.manager.recipe.initialise_operation_drag_n_drop();
};
/**
* Adds an operation to the user's favourites.
*
* @param {string} name - The name of the operation
*/
HTMLApp.prototype.add_favourite = function(name) {
var favourites = JSON.parse(localStorage.favourites);
if (favourites.indexOf(name) >= 0) {
this.alert("'" + name + "' is already in your favourites", "info", 2000);
return;
}
favourites.push(name);
this.save_favourites(favourites);
this.load_favourites();
this.populate_operations_list();
this.manager.recipe.initialise_operation_drag_n_drop();
};
/**
* Checks for input and recipe in the URI parameters and loads them if present.
*/
HTMLApp.prototype.load_URI_params = function() {
// Load query string from URI
this.query_string = (function(a) {
if (a === "") return {};
var b = {};
for (var i = 0; i < a.length; i++) {
var p = a[i].split("=");
if (p.length !== 2) {
b[a[i]] = true;
} else {
b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
}
}
return b;
})(window.location.search.substr(1).split("&"));
// Turn off auto-bake while loading
var auto_bake_val = this.auto_bake_;
this.auto_bake_ = false;
// Read in recipe from query string
if (this.query_string.recipe) {
try {
var recipe_config = JSON.parse(this.query_string.recipe);
this.set_recipe_config(recipe_config);
} catch(err) {}
} else if (this.query_string.op) {
// If there's no recipe, look for single operations
this.manager.recipe.clear_recipe();
try {
this.manager.recipe.add_operation(this.query_string.op);
} catch(err) {
// If no exact match, search for nearest match and add that
var matched_ops = this.manager.ops.filter_operations(this.query_string.op, false);
if (matched_ops.length) {
this.manager.recipe.add_operation(matched_ops[0].name);
}
// Populate search with the string
var search = document.getElementById("search");
search.value = this.query_string.op;
search.dispatchEvent(new Event("search"));
}
}
// Read in input data from query string
if (this.query_string.input) {
try {
var input_data = Utils.from_base64(this.query_string.input);
this.set_input(input_data);
} catch(err) {}
}
// Restore auto-bake state
this.auto_bake_ = auto_bake_val;
this.auto_bake();
};
/**
* Returns the next ingredient ID and increments it for next time.
*
* @returns {number}
*/
HTMLApp.prototype.next_ing_id = function() {
return this.ing_id++;
};
/**
* Gets the current recipe configuration.
*
* @returns {Object[]}
*/
HTMLApp.prototype.get_recipe_config = function() {
var recipe_config = this.manager.recipe.get_config();
sessionStorage.setItem("recipe_config", JSON.stringify(recipe_config));
return recipe_config;
};
/**
* Given a recipe configuration, sets the recipe to that configuration.
*
* @param {Object[]} recipe_config - The recipe configuration
*/
HTMLApp.prototype.set_recipe_config = function(recipe_config) {
sessionStorage.setItem("recipe_config", JSON.stringify(recipe_config));
document.getElementById("rec_list").innerHTML = null;
for (var i = 0; i < recipe_config.length; i++) {
var item = this.manager.recipe.add_operation(recipe_config[i].op);
// Populate arguments
var args = item.querySelectorAll(".arg");
for (var j = 0; j < args.length; j++) {
if (args[j].getAttribute("type") === "checkbox") {
// checkbox
args[j].checked = recipe_config[i].args[j];
} else if (args[j].classList.contains("toggle-string")) {
// toggle_string
args[j].value = recipe_config[i].args[j].string;
args[j].previousSibling.children[0].innerHTML =
Utils.escape_html(recipe_config[i].args[j].option) +
" <span class='caret'></span>";
} else {
// all others
args[j].value = recipe_config[i].args[j];
}
}
// Set disabled and breakpoint
if (recipe_config[i].disabled) {
item.querySelector(".disable-icon").click();
}
if (recipe_config[i].breakpoint) {
item.querySelector(".breakpoint").click();
}
this.progress = 0;
}
};
/**
* Resets the splitter positions to default.
*/
HTMLApp.prototype.reset_layout = function() {
this.column_splitter.setSizes([20, 30, 50]);
this.io_splitter.setSizes([50, 50]);
this.manager.controls.adjust_width();
};
/**
* Sets the compile message.
*/
HTMLApp.prototype.set_compile_message = function() {
// Display time since last build and compile message
var now = new Date(),
time_since_compile = Utils.fuzzy_time(now.getTime() - window.compile_time),
compile_info = "<span style=\"font-weight: normal\">Last build: " +
time_since_compile.substr(0, 1).toUpperCase() + time_since_compile.substr(1) + " ago";
if (window.compile_message !== "") {
compile_info += " - " + window.compile_message;
}
compile_info += "</span>";
document.getElementById("notice").innerHTML = compile_info;
};
/**
* Pops up a message to the user and writes it to the console log.
*
* @param {string} str - The message to display (HTML supported)
* @param {string} style - The colour of the popup
* "danger" = red
* "warning" = amber
* "info" = blue
* "success" = green
* @param {number} timeout - The number of milliseconds before the popup closes automatically
* 0 for never (until the user closes it)
* @param {boolean} [silent=false] - Don't show the message in the popup, only print it to the
* console
*
* @example
* // Pops up a red box with the message "[current time] Error: Something has gone wrong!"
* // that will need to be dismissed by the user.
* this.alert("Error: Something has gone wrong!", "danger", 0);
*
* // Pops up a blue information box with the message "[current time] Happy Christmas!"
* // that will disappear after 5 seconds.
* this.alert("Happy Christmas!", "info", 5000);
*/
HTMLApp.prototype.alert = function(str, style, timeout, silent) {
var time = new Date();
console.log("[" + time.toLocaleString() + "] " + str);
if (silent) return;
style = style || "danger";
timeout = timeout || 0;
var alert_el = document.getElementById("alert"),
alert_content = document.getElementById("alert-content");
alert_el.classList.remove("alert-danger");
alert_el.classList.remove("alert-warning");
alert_el.classList.remove("alert-info");
alert_el.classList.remove("alert-success");
alert_el.classList.add("alert-" + style);
// If the box hasn't been closed, append to it rather than replacing
if (alert_el.style.display === "block") {
alert_content.innerHTML +=
"<br><br>[" + time.toLocaleTimeString() + "] " + str;
} else {
alert_content.innerHTML =
"[" + time.toLocaleTimeString() + "] " + str;
}
// Stop the animation if it is in progress
$("#alert").stop();
alert_el.style.display = "block";
alert_el.style.opacity = 1;
if (timeout > 0) {
clearTimeout(this.alert_timeout);
this.alert_timeout = setTimeout(function(){
$("#alert").slideUp(100);
}, timeout);
}
};
/**
* 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);});
*/
HTMLApp.prototype.confirm = function(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.confirm_closed = false;
$("#confirm-modal").modal()
.one("show.bs.modal", function(e) {
this.confirm_closed = false;
}.bind(this))
.one("click", "#confirm-yes", function() {
this.confirm_closed = true;
callback.bind(scope)(true);
$("#confirm-modal").modal("hide");
}.bind(this))
.one("hide.bs.modal", function(e) {
if (!this.confirm_closed)
callback.bind(scope)(false);
this.confirm_closed = true;
}.bind(this));
};
/**
* Handler for the alert close button click event.
* Closes the alert box.
*/
HTMLApp.prototype.alert_close_click = function() {
document.getElementById("alert").style.display = "none";
};
/**
* Handler for CyerChef statechange events.
* Fires whenever the input or recipe changes in any way.
*
* @listens Manager#statechange
* @param {event} e
*/
HTMLApp.prototype.state_change = function(e) {
this.auto_bake();
// Update the current history state (not creating a new one)
if (this.options.update_url) {
this.last_state_url = this.manager.controls.generate_state_url(true, true);
window.history.replaceState({}, "CyberChef", this.last_state_url);
}
};
/**
* Handler for the history popstate event.
* Reloads parameters from the URL.
*
* @param {event} e
*/
HTMLApp.prototype.pop_state = function(e) {
if (window.location.href.split("#")[0] !== this.last_state_url) {
this.load_URI_params();
}
};
/**
* Function to call an external API from this view.
*/
HTMLApp.prototype.call_api = function(url, type, data, data_type, content_type) {
type = type || "POST";
data = data || {};
data_type = data_type || undefined;
content_type = content_type || "application/json";
var response = null,
success = false;
$.ajax({
url: url,
async: false,
type: type,
data: data,
dataType: data_type,
contentType: content_type,
success: function(data) {
success = true;
response = data;
},
error: function(data) {
success = false;
response = data;
},
});
return {
success: success,
response: response
};
};
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