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Added in random-number-csprng, which required using Bluebird and Promisfying a *whole* bunch of code.

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This is the fix to address Bug #7.
This commit is contained in:
Douglas Muth 2017-11-08 23:27:42 -05:00
parent b7f1adb8a2
commit f19dca83dd
2 changed files with 100 additions and 32 deletions
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5
index.html
View file

@ -303,10 +303,7 @@ Feel free to reach out to me if you have any comments, suggestions, or bug repor
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<script src="./main.js"></script>
<script>
Diceware.go();
</script>
<script src="./dist/bundle.js"></script>
</body>
</html>

127
main.js
View file

@ -2,6 +2,14 @@
* Our main Javascript file.
*/
var Promise = require("bluebird");
var randomNumber = require("random-number-csprng");
//
// This "put everything in an object" approach is a holdover from
// before I started using webpack. Yay legacy code.
//
var Diceware = {};
//
@ -16,6 +24,7 @@ Diceware.num_dice_per_roll = 5;
*/
Diceware.i_can_has_good_crypto = function() {
//return(false); // Debugging
if (window.crypto && window.crypto.getRandomValues) {
return(true);
}
@ -26,18 +35,28 @@ Diceware.i_can_has_good_crypto = function() {
/**
* Return a random integer between 1 and max.
* Return a random integer between 0 and max, inclusive.
*/
Diceware.getRandomValue = function(max) {
return new Promise(function(resolve, reject) {
if (max <= 0){
return(NaN);
resolve(NaN);
}
if (Diceware.i_can_has_good_crypto()) {
var a = new Uint32Array(1);
window.crypto.getRandomValues(a);
retval = (a[0] % max);
Promise.try(function() {
return randomNumber(0, max);
}).then(function(number) {
retval = number;
resolve(retval);
}).catch({code: "RandomGenerationError"}, function(err) {
console.log("randomNumber(): Something went wrong!");
});
} else {
//
@ -45,12 +64,11 @@ Diceware.getRandomValue = function(max) {
// been warned.
//
retval = Math.floor(Math.random() * max);
resolve(retval);
}
return(retval);
}); // End of Promise()
} // End of getRandomValue()
@ -170,22 +188,28 @@ Diceware.getNumValuesFromNumDice = function(num_dice) {
*
*/
Diceware.rollDice = function(num_dice) {
return new Promise(function(resolve, reject) {
var retval = {};
var retval = {};
var max = Diceware.getNumValuesFromNumDice(num_dice);
var max = Diceware.getNumValuesFromNumDice(num_dice);
Promise.try(function() {
return(Diceware.getRandomValue(max - 1));
var random = Diceware.getRandomValue(max);
}).then(function(random) {
var base6 = Diceware.getBase6(random, num_dice);
var base6 = Diceware.getBase6(random, num_dice);
var dice = Diceware.convertBase6ToDice(base6, num_dice);
var dice = Diceware.convertBase6ToDice(base6, num_dice);
retval.value = random;
retval.roll = dice;
retval.value = random;
retval.roll = dice;
resolve(retval);
return(retval);
});
}); // End of Promise()
} // End of rollDice()
@ -342,10 +366,9 @@ Diceware.is_mobile = function() {
/**
* Our handler for what to do when the "Roll Dice" button is clicked".
* It generates the passphrase and updates the HTML.
* Do some preliminary work, such as clearing out results and scrolling.
*/
Diceware.rollDiceHandler = function(e) {
Diceware.rollDiceHanlderPre = function() {
//
// Clear out more space when mobile
@ -373,23 +396,65 @@ Diceware.rollDiceHandler = function(e) {
//
jQuery(".results").empty();
} // End of rollDiceHandlerPre()
/**
* Our handler for what to do when the "Roll Dice" button is clicked".
* It generates the passphrase and updates the HTML.
*/
Diceware.rollDiceHandler = function(e) {
Diceware.rollDiceHanlderPre();
//
// Make our dice rolls
//
var num_dice = jQuery(".dice_button.active").html();
var num_passwords = Number(Math.pow(6, (Diceware.num_dice_per_roll * num_dice)));
var passphrase = new Array();
var rolls = new Array();
for (var i=0; i<num_dice; i++) {
var roll = {};
roll.dice = Diceware.rollDice(Diceware.num_dice_per_roll);
roll.word = Diceware.get_word(wordlist, roll.dice.value);
rolls.push(roll);
passphrase.push(roll.word);
//
// Create an array of empty items, since this is the only way I can
// figure out to do a loop in Bluebird at this time. Ugh.
//
var items = [];
for (i=0; i<num_dice; i++) { items.push(null); }
}
Promise.map(items, function(element) {
//
// Do our dice rolls all at once.
//
return(Diceware.rollDice(Diceware.num_dice_per_roll));
}).then(function(data) {
//
// Now that we have the results, get the word for each roll,
// save the roll, and push the word onto the passphrase.
//
data.forEach(function(row) {
var roll = {};
roll.dice = row;
roll.word = Diceware.get_word(wordlist, roll.dice.value);
rolls.push(roll);
passphrase.push(roll.word);
});
Diceware.rollDiceHanlderPost(rolls, passphrase, num_passwords);
});
} // End of rollDiceHandler()
/**
* Our post work, of displaying the results of our dice rolls.
*/
Diceware.rollDiceHanlderPost = function(rolls, passphrase, num_passwords) {
//
// Populate our results by cloning the hidden base rows which
@ -457,7 +522,7 @@ Diceware.rollDiceHandler = function(e) {
});
} // End of rollDiceHandler()
} // End of rollDiceHandlerPost()
/**
@ -585,3 +650,9 @@ Diceware.go = function() {
} // End of go()
//
// Run go() automatically, as that is the webpack way.
//
Diceware.go();