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/*
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 = {}; }
//=============================================================================
Clipperz.PM.Toll = function(args) {
this._requestType = args.requestType;
this._targetValue = args.targetValue;
this._cost = args.cost;
this._toll = null;
return this;
}
Clipperz.PM.Toll.prototype = MochiKit.Base.update(null, {
'toString': function() {
return "Clipperz.PM.Toll (" + this.requestType() + ": " + this.cost() + " - " + ((this.toll() == null)? 'UNPAID' : 'PAID') + ")";
},
//-------------------------------------------------------------------------
'requestType': function() {
return this._requestType;
},
//-------------------------------------------------------------------------
'targetValue': function() {
return this._targetValue;
},
//-------------------------------------------------------------------------
'cost': function() {
return this._cost;
},
//-------------------------------------------------------------------------
'toll': function() {
return this._toll;
},
//=========================================================================
'prefixMatchingBits': function(aValue1, aValue2) {
var result;
var i,c;
result = 0;
c = Math.min(aValue1.length(), aValue2.length());
i = 0;
while (i<c && (aValue1.byteAtIndex(i) == aValue2.byteAtIndex(i))) {
result += 8;
i++;
}
if (i<c) {
var xorValue;
xorValue = (aValue1.byteAtIndex(i) ^ aValue2.byteAtIndex(i));
if (xorValue >= 128) {
result += 0;
} else if (xorValue >= 64) {
result += 1;
} else if (xorValue >= 32) {
result += 2;
} else if (xorValue >= 16) {
result += 3;
} else if (xorValue >= 8) {
result += 4;
} else if (xorValue >= 4) {
result += 5;
} else if (xorValue >= 2) {
result += 6;
} else if (xorValue >= 1) {
result += 7;
}
}
return result;
},
//=========================================================================
'pay': function() {
var result;
var targetData;
var targetMatchSize;
var prefixMatchingBits;
var payment;
var i;
//MochiKit.Logging.logDebug(">>> Toll.pay");
if (this.toll() == null) {
i = 0;
//MochiKit.Logging.logDebug("--- Proxy.payToll - 1");
targetData = new Clipperz.ByteArray("0x" + this.targetValue());
//MochiKit.Logging.logDebug("--- Proxy.payToll - 2");
targetMatchSize = this.cost();
//MochiKit.Logging.logDebug("--- Proxy.payToll - 3");
payment = Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32);
//MochiKit.Logging.logDebug("--- Proxy.payToll - 4");
do {
var paymentData;
//MochiKit.Logging.logDebug("--- Proxy.payToll - 5");
//payment = Clipperz.Crypto.PRNG.defaultRandomGenerator().getRandomBytes(32);
payment.increment();
//MochiKit.Logging.logDebug("--- Proxy.payToll - 6");
paymentData = Clipperz.Crypto.SHA.sha256(payment);
//MochiKit.Logging.logDebug("--- Proxy.payToll - 7");
prefixMatchingBits = this.prefixMatchingBits(targetData, paymentData);
//MochiKit.Logging.logDebug("--- Proxy.payToll - 8");
i++;
//MochiKit.Logging.logDebug("--- Proxy.payToll - 9");
} while (prefixMatchingBits < targetMatchSize);
//MochiKit.Logging.logDebug("--- Proxy.payToll - 10");
this._toll = payment.toHexString().substring(2)
}
//MochiKit.Logging.logDebug("<<< Toll.pay");
return this;
},
//-------------------------------------------------------------------------
'deferredPay': function() {
var deferredResult;
var toll;
//MochiKit.Logging.logDebug(">>> Toll.deferredPay");
toll = this;
deferredResult = new MochiKit.Async.Deferred();
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("y.1 - Proxy.deferredPayToll - 1: " + res); return res;});
deferredResult.addCallback(MochiKit.Base.method(toll, 'pay'));
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("y.2 - Proxy.deferredPayToll - 2: " + res); return res;});
deferredResult.addCallback(function(aToll) {
var result;
result = {
targetValue:aToll.targetValue(),
toll:aToll.toll()
};
return result;
});
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("y.3 - Proxy.deferredPayToll - 3: " + res); return res;});
deferredResult.callback();
//MochiKit.Logging.logDebug("<<< Toll.deferredPay");
return deferredResult;
},
//=========================================================================
__syntaxFix__: "syntax fix"
});
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