From 20bea94ab6b91c85b171dcf86baba0a64169d508 Mon Sep 17 00:00:00 2001
From: Giulio Cesare Solaroli <giulio.cesare@clipperz.com>
Date: Fri, 30 Aug 2013 15:56:53 +0000
Subject: First release of /delta version

---
(limited to 'frontend/delta/js/Clipperz/PM/PIN.js')

diff --git a/frontend/delta/js/Clipperz/PM/PIN.js b/frontend/delta/js/Clipperz/PM/PIN.js
new file mode 100644
index 0000000..a32889a
--- a/dev/null
+++ b/frontend/delta/js/Clipperz/PM/PIN.js
@@ -0,0 +1,132 @@
+/*
+
+Copyright 2008-2013 Clipperz Srl
+
+This file is part of Clipperz, the online password manager.
+For further information about its features and functionalities please
+refer to http://www.clipperz.com.
+
+* Clipperz is free software: you can redistribute it and/or modify it
+  under the terms of the GNU Affero General Public License as published
+  by the Free Software Foundation, either version 3 of the License, or 
+  (at your option) any later version.
+
+* Clipperz is distributed in the hope that it will be useful, but 
+  WITHOUT ANY WARRANTY; without even the implied warranty of 
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Affero General Public License for more details.
+
+* You should have received a copy of the GNU Affero General Public
+  License along with Clipperz. If not, see http://www.gnu.org/licenses/.
+
+*/
+
+if (typeof(Clipperz) == 'undefined') { Clipperz = {}; }
+if (typeof(Clipperz.PM) == 'undefined') { Clipperz.PM = {}; }
+if (typeof(Clipperz.PM.PIN) == 'undefined') { Clipperz.PM.PIN = {}; }
+
+MochiKit.Base.update(Clipperz.PM.PIN, {
+
+	//-------------------------------------------------------------------------
+
+	'__repr__': function () {
+		return "[" + this.NAME + " " + this.VERSION + "]";
+	},
+
+	//-------------------------------------------------------------------------
+
+	'toString': function () {
+		return this.__repr__();
+	},
+
+	'CREDENTIALS':   'CLIPPERZ.CREDENTIALS',
+	'FAILURE_COUNT': 'CLIPPERZ.FAILED_LOGIN_COUNT',
+	'ALLOWED_RETRY': 3,
+
+	//-------------------------------------------------------------------------
+
+	'isSet': function () {
+		return (this.storedCredentials() != null);
+	},
+
+	'storedCredentials': function () {
+		return localStorage[this.CREDENTIALS];
+	},
+
+	//-------------------------------------------------------------------------
+
+	'recordFailedAttempt': function () {
+		var	failureCount;
+		var	result;
+
+		failureCount = localStorage[this.FAILURE_COUNT];
+
+		if (failureCount == null) {
+			failureCount = 0
+		}
+
+		failureCount ++;
+
+		if (failureCount < this.ALLOWED_RETRY) {
+			localStorage[this.FAILURE_COUNT] = failureCount;
+			result = failureCount;
+		} else {
+			this.removeLocalCredentials();
+			result = -1;
+		}
+
+		return result;
+	},
+
+	'resetFailedAttemptCount': function () {
+		localStorage.removeItem(this.FAILURE_COUNT);
+	},
+
+	'failureCount': function () {
+		return localStorage[this.FAILURE_COUNT];
+	},
+
+	//-------------------------------------------------------------------------
+
+	'deriveKeyFromPin': function (aPIN) {
+		return Clipperz.Crypto.SHA.sha256(new Clipperz.ByteArray(aPIN));
+	},
+
+	'credentialsWithPIN': function (aPIN) {
+		var	byteArrayValue;
+		var decryptedValue;
+		var	result;
+
+		byteArrayValue = (new Clipperz.ByteArray()).appendBase64String(localStorage[this.CREDENTIALS]);
+		decryptedValue = Clipperz.Crypto.AES.decrypt(this.deriveKeyFromPin(aPIN), byteArrayValue).asString();
+		try {
+			result = Clipperz.Base.evalJSON(decryptedValue);
+		} catch (error) {
+			result = {'username':'fakeusername', 'passphrase':'fakepassphrase'};
+		}
+
+		return result;
+	},
+
+	'setCredentialsWithPIN': function (aPIN, someCredentials) {
+		var	encodedValue;
+		var	byteArrayValue;
+		var encryptedValue;
+
+		encodedValue = Clipperz.Base.serializeJSON(someCredentials);
+		byteArrayValue = new Clipperz.ByteArray(encodedValue);
+		encryptedValue = Clipperz.Crypto.AES.encrypt(this.deriveKeyFromPin(aPIN), byteArrayValue).toBase64String();
+
+		localStorage[this.CREDENTIALS] = encryptedValue;
+	},
+
+	'removeLocalCredentials': function () {
+		localStorage.removeItem(this.CREDENTIALS);
+		localStorage.removeItem(this.FAILURE_COUNT);
+	},
+
+	//-------------------------------------------------------------------------
+	__syntaxFix__: "syntax fix"
+
+});
+
--
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