/**
* The main controller for CyberChef.
*
* @author n1474335 [n1474335@gmail.com]
* @copyright Crown Copyright 2016
* @license Apache-2.0
*
* @class
*/
var Chef = function() {
this.dish = new Dish();
};
/**
* Runs the recipe over the input.
*
* @param {string} input_text - The input data as a string
* @param {Object[]} recipe_config - The recipe configuration object
* @param {Object} options - The options object storing various user choices
* @param {boolean} options.attemp_highlight - Whether or not to attempt highlighting
* @param {number} progress - The position in the recipe to start from
* @param {number} [step] - The number of operations to execute
*
* @returns {Object} response
* @returns {string} response.result - The output of the recipe
* @returns {string} response.type - The data type of the result
* @returns {number} response.progress - The position that we have got to in the recipe
* @returns {number} response.options - The app options object (which may have been changed)
* @returns {number} response.duration - The number of ms it took to execute the recipe
* @returns {number} response.error - The error object thrown by a failed operation (false if no error)
*/
Chef.prototype.bake = function(input_text, recipe_config, options, progress, step) {
var start_time = new Date().getTime(),
recipe = new Recipe(recipe_config),
contains_fc = recipe.contains_flow_control(),
error = false;
// Reset attempt_highlight flag
if (options.hasOwnProperty("attempt_highlight")) {
options.attempt_highlight = true;
}
if (contains_fc) options.attempt_highlight = false;
// Clean up progress
if (progress >= recipe_config.length) {
progress = 0;
}
if (step) {
// Unset breakpoint on this step
recipe.set_breakpoint(progress, false);
// Set breakpoint on next step
recipe.set_breakpoint(progress + 1, true);
}
// If stepping with flow control, we have to start from the beginning
// but still want to skip all previous breakpoints
if (progress > 0 && contains_fc) {
recipe.remove_breaks_up_to(progress);
progress = 0;
}
// If starting from scratch, load data
if (progress === 0) {
this.dish.set(input_text, Dish.STRING);
}
try {
progress = recipe.execute(this.dish, progress);
} catch (err) {
// We can't throw the error from here as we will return in the finally block and ignore it
// so we return the error in the result instead.
error = err;
progress = err.progress;
} finally {
return {
result: this.dish.type == Dish.HTML ?
this.dish.get(Dish.HTML) :
this.dish.get(Dish.STRING),
type: Dish.enum_lookup(this.dish.type),
progress: progress,
options: options,
duration: new Date().getTime() - start_time,
error: error
};
}
};
/**
* When a browser tab is unfocused and the browser has to run lots of dynamic content in other tabs,
* it swaps out the memory for that tab. If the CyberChef tab has been unfocused for more than a
* minute, we run a silent bake which will force the browser to load and cache all the relevant
* JavaScript code needed to do a real bake.
*
* This will stop baking taking a long time when the CyberChef browser tab has been unfocused for a
* long time and the browser has swapped out all its memory.
*
* 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.
*
* @param {Object[]} recipe_config - The recipe configuration object
* @returns {number} The time it took to run the silent bake in milliseconds.
*/
Chef.prototype.silent_bake = function(recipe_config) {
var start_time = new Date().getTime(),
recipe = new Recipe(recipe_config),
dish = new Dish("", Dish.STRING);
try {
recipe.execute(dish);
} catch(err) {
// Suppress all errors
}
return new Date().getTime() - start_time;
};
CyberChef