Diffstat (limited to 'frontend/beta/js/Clipperz/PM/Toll.js') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | frontend/beta/js/Clipperz/PM/Toll.js | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/frontend/beta/js/Clipperz/PM/Toll.js b/frontend/beta/js/Clipperz/PM/Toll.js new file mode 100644 index 0000000..6d412c1 --- a/dev/null +++ b/frontend/beta/js/Clipperz/PM/Toll.js @@ -0,0 +1,193 @@ +/* + +Copyright 2008-2011 Clipperz Srl + +This file is part of Clipperz's Javascript Crypto Library. +Javascript Crypto Library provides web developers with an extensive +and efficient set of cryptographic functions. The library aims to +obtain maximum execution speed while preserving modularity and +reusability. +For further information about its features and functionalities please +refer to http://www.clipperz.com + +* Javascript Crypto Library 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. + +* Javascript Crypto Library 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 Javascript Crypto Library. 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" + +}); + |