From 4105d2b5ad27708d317a3e9fd5915b31a05d18ca Mon Sep 17 00:00:00 2001
From: Kyle Spearrin <kyle.spearrin@gmail.com>
Date: Sat, 17 Sep 2016 18:30:57 -0400
Subject: [PATCH] password generation service

---
 src/manifest.json                           |   1 +
 src/popup/app/services/backgroundService.js |   3 +
 src/services/passwordGenerationService.js   | 102 ++++++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 src/services/passwordGenerationService.js

diff --git a/src/manifest.json b/src/manifest.json
index 49c89f0a..0033d1a9 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -39,6 +39,7 @@
       "services/siteService.js",
       "services/syncService.js",
       "services/autofillService.js",
+      "services/passwordGenerationService.js",
       "background.js"
     ]
   },
diff --git a/src/popup/app/services/backgroundService.js b/src/popup/app/services/backgroundService.js
index ce1b96ca..ac4235f8 100644
--- a/src/popup/app/services/backgroundService.js
+++ b/src/popup/app/services/backgroundService.js
@@ -27,4 +27,7 @@
     })
     .factory('autofillService', function () {
         return chrome.extension.getBackgroundPage().autofillService;
+    })
+    .factory('passwordGenerationService', function () {
+        return chrome.extension.getBackgroundPage().passwordGenerationService;
     });
diff --git a/src/services/passwordGenerationService.js b/src/services/passwordGenerationService.js
new file mode 100644
index 00000000..b90f43cd
--- /dev/null
+++ b/src/services/passwordGenerationService.js
@@ -0,0 +1,102 @@
+function PasswordGenerationService() {
+    initPasswordGenerationService();
+};
+
+function initPasswordGenerationService() {
+    PasswordGenerationService.prototype.generatePassword = function (options) {
+        var defaults = {
+            length: 10,
+            ambiguous: false,
+            number: true,
+            minNumber: 1,
+            uppercase: true,
+            minUppercase: 1,
+            lowercase: true,
+            minLowercase: 1,
+            special: false,
+            minSpecial: 1
+        };
+
+        // overload defaults with given options
+        var o = angular.extend({}, defaults, options);
+
+        // sanitize
+        if (o.uppercase && o.minUppercase < 0) o.minUppercase = 1;
+        if (o.lowercase && o.minLowercase < 0) o.minLowercase = 1;
+        if (o.number && o.minNumber < 0) o.minNumber = 1;
+        if (o.special && o.minSpecial < 0) o.minSpecial = 1;
+
+        if (!o.length || o.length < 1) o.length = 10;
+        var minLength = o.minUppercase + o.minLowercase + o.minNumber + o.minSpecial;
+        if (o.length < minLength) o.length = minLength;
+
+        var positions = [];
+        if (o.lowercase && o.minLowercase > 0) {
+            for (var i = 0; i < o.minLowercase; i++) {
+                positions.push('l');
+            }
+        }
+        if (o.uppercase && o.minUppercase > 0) {
+            for (var j = 0; j < o.minUppercase; j++) {
+                positions.push('u');
+            }
+        }
+        if (o.number && o.minNumber > 0) {
+            for (var k = 0; k < o.minNumber; k++) {
+                positions.push('n');
+            }
+        }
+        if (o.special && o.minSpecial > 0) {
+            for (var l = 0; l < o.minSpecial; l++) {
+                positions.push('s');
+            }
+        }
+        while (positions.length < o.length) {
+            positions.push('a');
+        }
+
+        // shuffle
+        positions.sort(function () {
+            return randomInt(0, 1) * 2 - 1;
+        });
+
+        // build out the char sets
+        var allCharSet = '';
+
+        var lowercaseCharSet = 'abcdefghijkmnopqrstuvwxyz';
+        if (o.ambiguous) lowercaseCharSet += 'l';
+        if (o.lowercase) allCharSet += lowercaseCharSet;
+
+        var uppercaseCharSet = 'ABCDEFGHIJKLMNPQRSTUVWXYZ';
+        if (o.ambiguous) uppercaseCharSet += 'O';
+        if (o.uppercase) allCharSet += uppercaseCharSet;
+
+        var numberCharSet = '23456789';
+        if (o.ambiguous) numberCharSet += '01';
+        if (o.number) allCharSet += numberCharSet;
+
+        var specialCharSet = '!@#$%^&*';
+        if (o.special) allCharSet += specialCharSet;
+
+        var password = '';
+        for (var m = 0; m < o.length; m++) {
+            var positionChars;
+            switch (positions[m]) {
+                case 'l': positionChars = lowercaseCharSet; break;
+                case 'u': positionChars = uppercaseCharSet; break;
+                case 'n': positionChars = numberCharSet; break;
+                case 's': positionChars = specialCharSet; break;
+                case 'a': positionChars = allCharSet; break;
+            }
+
+            var randomCharIndex = randomInt(0, positionChars.length - 1);
+            password += positionChars.charAt(randomCharIndex);
+        }
+
+        return password;
+    };
+
+    function randomInt(min, max) {
+        return Math.floor(Math.random() * (max - min + 1)) + min;
+    }
+};