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/*
Copyright 2008-2011 Clipperz Srl
This file is part of Clipperz Community Edition.
Clipperz Community Edition is an online password manager.
For further information about its features and functionalities please
refer to http://www.clipperz.com.
* Clipperz Community Edition 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 Community Edition 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 Community Edition. 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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