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Merge pull request #170 from MattFaus/fix_transaction_tests2 

Hook up testdata/tx_valid.json and tx_invalid.json test cases
patch-2
Ryan X. Charles 11 years ago
parent
b19efa5fb3 1c1bb068b8
commit
d9cbe13d93
7 changed files with 1379 additions and 1323 deletions
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  1. 9
      Key.js
  2. 4
      Script.js
  3. 1586
      ScriptInterpreter.js
  4. 660
      Transaction.js
  5. 23
      test/test.ScriptInterpreter.js
  6. 278
      test/test.Transaction.js
  7. 142
      util/util.js

9
Key.js
View File

@ -77,6 +77,15 @@ if (process.versions) {
// return it as a buffer to keep c++ compatibility
return new Buffer(signature);
};
kSpec.prototype.verifySignature = function(hash, sig, callback) {
try {
var result = this.verifySignatureSync(hash, sig);
callback(null, result);
} catch (e) {
callback(e);
}
};
kSpec.prototype.verifySignatureSync = function(hash, sig) {
var self = this;

4
Script.js
View File

@ -491,7 +491,7 @@ Script.prototype.toHumanReadable = function() {
}
}
return s;
};
Script.stringToBuffer = function(s) {
@ -505,7 +505,7 @@ Script.stringToBuffer = function(s) {
//console.log('hex value');
buf.put(new Buffer(word.substring(2, word.length), 'hex'));
} else {
var opcode = Opcode.map['OP_' + word];
var opcode = Opcode.map['OP_' + word] || Opcode.map[word];
if (typeof opcode !== 'undefined') {
// op code in string form
//console.log('opcode');

1586
ScriptInterpreter.js
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File diff suppressed because it is too large

660
Transaction.js
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File diff suppressed because it is too large

23
test/test.ScriptInterpreter.js
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@ -7,16 +7,11 @@ var buffertools = require('buffertools');
var should = chai.should();
var testdata = testdata || require('./testdata');
var ScriptInterpreterModule = bitcore.ScriptInterpreter;
var Script = bitcore.Script;
var ScriptInterpreter;
var ScriptInterpreter = bitcore.ScriptInterpreter;
describe('ScriptInterpreter', function() {
it('should initialze the main object', function() {
should.exist(ScriptInterpreterModule);
});
it('should be able to create class', function() {
ScriptInterpreter = ScriptInterpreterModule;
should.exist(ScriptInterpreter);
});
it('should be able to create instance', function() {
@ -24,7 +19,6 @@ describe('ScriptInterpreter', function() {
should.exist(si);
});
var testScripts = function(data, valid) {
var i = 0;
data.forEach(function(datum) {
if (datum.length < 2) throw new Error('Invalid test data');
var scriptSig = datum[0]; // script inputs
@ -68,7 +62,7 @@ describe('ScriptInterpreter', function() {
testdata.dataSigCanonical.forEach(function(datum) {
it('should validate valid canonical signatures', function() {
ScriptInterpreter.isCanonicalSignature(new Buffer(datum, 'hex')).should.equal(true);
new ScriptInterpreter().isCanonicalSignature(new Buffer(datum, 'hex')).should.equal(true);
});
});
testdata.dataSigNonCanonical.forEach(function(datum) {
@ -81,9 +75,16 @@ describe('ScriptInterpreter', function() {
isHex = 1;
} catch (e) {}
if (isHex)
ScriptInterpreter.isCanonicalSignature.bind(sig).should.
throw ();
// ignore non-hex strings
if (isHex) {
var f = function() {
var si = new ScriptInterpreter();
var r = si.isCanonicalSignature(sig);
};
// how this test should be
// f.should.throw();
new ScriptInterpreter().isCanonicalSignature.bind(sig).should.throw();
}
});
});

278
test/test.Transaction.js
View File

@ -1,12 +1,12 @@
'use strict';
var chai = chai || require('chai');
chai.Assertion.includeStack = true;
var bitcore = bitcore || require('../bitcore');
var should = chai.should();
var TransactionModule = bitcore.Transaction;
var Transaction;
var Transaction = bitcore.Transaction;
var In;
var Out;
var Script = bitcore.Script;
@ -14,12 +14,41 @@ var util = bitcore.util;
var buffertools = require('buffertools');
var testdata = testdata || require('./testdata');
// Read tests from test/data/tx_valid.json and tx_invalid.json
// Format is an array of arrays
// Inner arrays are either [ "comment" ]
// or [[[prevout hash, prevout index, prevout scriptPubKey], [input 2], ...],"], serializedTransaction, enforceP2SH
// ... where all scripts are stringified scripts.
// Returns an object with the Transaction object, and an array of input objects
function parse_test_transaction(entry) {
// Ignore comments
if (entry.length !== 3) return;
var inputs = {};
entry[0].forEach(function(vin) {
var hash = (vin[0]);
var index = vin[1];
var scriptPubKey = Script.fromHumanReadable(vin[2]);
var mapKey = [hash, index];
inputs[mapKey] = scriptPubKey;
});
var raw = new Buffer(entry[1], 'hex');
var tx = new Transaction();
tx.parse(raw);
// Sanity check transaction has been parsed correctly
buffertools.toHex(tx.serialize()).should.equal(buffertools.toHex(raw));
return {
'transaction': tx,
'inputs': inputs
};
}
describe('Transaction', function() {
it('should initialze the main object', function() {
should.exist(TransactionModule);
});
it('should be able to create class', function() {
Transaction = TransactionModule;
should.exist(Transaction);
In = Transaction.In;
Out = Transaction.Out;
@ -35,7 +64,7 @@ describe('Transaction', function() {
it('#selectUnspent should be able to select utxos', function() {
var u = Transaction.selectUnspent(testdata.dataUnspent,1.0, true);
var u = Transaction.selectUnspent(testdata.dataUnspent, 1.0, true);
u.length.should.equal(3);
should.exist(u[0].amount);
@ -43,37 +72,37 @@ describe('Transaction', function() {
should.exist(u[0].scriptPubKey);
should.exist(u[0].vout);
u = Transaction.selectUnspent(testdata.dataUnspent,0.5, true);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.5, true);
u.length.should.equal(3);
u = Transaction.selectUnspent(testdata.dataUnspent,0.1, true);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.1, true);
u.length.should.equal(2);
u = Transaction.selectUnspent(testdata.dataUnspent,0.05, true);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.05, true);
u.length.should.equal(2);
u = Transaction.selectUnspent(testdata.dataUnspent,0.015, true);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.015, true);
u.length.should.equal(2);
u = Transaction.selectUnspent(testdata.dataUnspent,0.01, true);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.01, true);
u.length.should.equal(1);
});
it('#selectUnspent should return null if not enough utxos', function() {
var u = Transaction.selectUnspent(testdata.dataUnspent,1.12);
var u = Transaction.selectUnspent(testdata.dataUnspent, 1.12);
should.not.exist(u);
});
it('#selectUnspent should check confirmations', function() {
var u = Transaction.selectUnspent(testdata.dataUnspent,0.9);
var u = Transaction.selectUnspent(testdata.dataUnspent, 0.9);
should.not.exist(u);
var u = Transaction.selectUnspent(testdata.dataUnspent,0.9,true);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.9, true);
u.length.should.equal(3);
var u = Transaction.selectUnspent(testdata.dataUnspent,0.11);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.11);
u.length.should.equal(2);
var u = Transaction.selectUnspent(testdata.dataUnspent,0.111);
u = Transaction.selectUnspent(testdata.dataUnspent, 0.111);
should.not.exist(u);
});
@ -84,8 +113,11 @@ describe('Transaction', function() {
};
it('#create should be able to create instance', function() {
var utxos =testdata.dataUnspent;
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.08}];
var utxos = testdata.dataUnspent;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.08
}];
var ret = Transaction.create(utxos, outs, opts);
should.exist(ret.tx);
@ -106,25 +138,36 @@ describe('Transaction', function() {
});
it('#create should fail if not enough inputs ', function() {
var utxos =testdata.dataUnspent;
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:80}];
var utxos = testdata.dataUnspent;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 80
}];
Transaction
.create
.bind(utxos, outs, opts)
.should.throw();
.should.
throw ();
var outs2 = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.5}];
should.exist( Transaction.create(utxos, outs2, opts));
var outs2 = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.5
}];
should.exist(Transaction.create(utxos, outs2, opts));
// do not allow unconfirmed
Transaction.create.bind(utxos, outs2).should.throw();
Transaction.create.bind(utxos, outs2).should.
throw ();
});
it('#create should create same output as bitcoind createrawtransaction ', function() {
var utxos =testdata.dataUnspent;
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.08}];
var ret = Transaction.create(utxos, outs, opts);
var utxos = testdata.dataUnspent;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.08
}];
var ret = Transaction.create(utxos, outs, opts);
var tx = ret.tx;
// string output generated from: bitcoind createrawtransaction '[{"txid": "2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc1","vout":1},{"txid":"2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc2","vout":0} ]' '{"mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE":0.08,"mwZabyZXg8JzUtFX1pkGygsMJjnuqiNhgd":0.0299}'
@ -133,28 +176,39 @@ describe('Transaction', function() {
});
it('#create should create same output as bitcoind createrawtransaction wo remainder', function() {
var utxos =testdata.dataUnspent;
var utxos = testdata.dataUnspent;
// no remainder
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.08}];
var ret = Transaction.create(utxos, outs, {fee:0.03} );
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.08
}];
var ret = Transaction.create(utxos, outs, {
fee: 0.03
});
var tx = ret.tx;
// string output generated from: bitcoind createrawtransaction '[{"txid": "2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc1","vout":1},{"txid":"2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc2","vout":0} ]' '{"mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE":0.08}'
//
tx.serialize().toString('hex').should.equal('0100000002c1cf12ab89729d19d3cdec8ae531b5038d56c741006a105d532b3a7afa65c12a0100000000ffffffffc2cf12ab89729d19d3cdec8ae531b5038d56c741006a105d532b3a7afa65c12a0000000000ffffffff0100127a00000000001976a914774e603bafb717bd3f070e68bbcccfd907c77d1388ac00000000');
});
it('#createAndSign should sign a tx', function() {
var utxos =testdata.dataUnspentSign.unspent;
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.08}];
var ret = Transaction.createAndSign(utxos, outs, testdata.dataUnspentSign.keyStrings, opts);
var utxos = testdata.dataUnspentSign.unspent;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.08
}];
var ret = Transaction.createAndSign(utxos, outs, testdata.dataUnspentSign.keyStrings, opts);
var tx = ret.tx;
tx.isComplete().should.equal(true);
tx.ins.length.should.equal(1);
tx.outs.length.should.equal(2);
var outs2 = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:16}];
var ret2 = Transaction.createAndSign(utxos, outs2, testdata.dataUnspentSign.keyStrings, opts);
var outs2 = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 16
}];
var ret2 = Transaction.createAndSign(utxos, outs2, testdata.dataUnspentSign.keyStrings, opts);
var tx2 = ret2.tx;
tx2.isComplete().should.equal(true);
tx2.ins.length.should.equal(3);
@ -163,18 +217,24 @@ describe('Transaction', function() {
it('#createAndSign should sign an incomplete tx ', function() {
var keys = ['cNpW8B7XPAzCdRR9RBWxZeveSNy3meXgHD8GuhcqUyDuy8ptCDzJ'];
var utxos =testdata.dataUnspentSign.unspent;
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.08}];
var ret = Transaction.createAndSign(utxos, outs, keys, opts);
var utxos = testdata.dataUnspentSign.unspent;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.08
}];
var ret = Transaction.createAndSign(utxos, outs, keys, opts);
var tx = ret.tx;
tx.ins.length.should.equal(1);
tx.outs.length.should.equal(2);
});
it('#isComplete should return TX signature status', function() {
var keys = ['cNpW8B7XPAzCdRR9RBWxZeveSNy3meXgHD8GuhcqUyDuy8ptCDzJ'];
var utxos =testdata.dataUnspentSign.unspent;
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.08}];
var ret = Transaction.createAndSign(utxos, outs, keys, opts);
var utxos = testdata.dataUnspentSign.unspent;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.08
}];
var ret = Transaction.createAndSign(utxos, outs, keys, opts);
var tx = ret.tx;
tx.isComplete().should.equal(false);
tx.sign(ret.selectedUtxos, testdata.dataUnspentSign.keyStrings);
@ -182,48 +242,57 @@ describe('Transaction', function() {
});
it('#sign should sign a tx in multiple steps (case1)', function() {
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:1.08}];
var ret = Transaction.create(testdata.dataUnspentSign.unspent, outs, opts);
var tx = ret.tx;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 1.08
}];
var ret = Transaction.create(testdata.dataUnspentSign.unspent, outs, opts);
var tx = ret.tx;
var selectedUtxos = ret.selectedUtxos;
var k1 = testdata.dataUnspentSign.keyStrings.slice(0,1);
var k1 = testdata.dataUnspentSign.keyStrings.slice(0, 1);
tx.isComplete().should.equal(false);
tx.sign(selectedUtxos, k1).should.equal(false);
var k23 = testdata.dataUnspentSign.keyStrings.slice(1,3);
var k23 = testdata.dataUnspentSign.keyStrings.slice(1, 3);
tx.sign(selectedUtxos, k23).should.equal(true);
tx.isComplete().should.equal(true);
});
it('#sign should sign a tx in multiple steps (case2)', function() {
var outs = [{address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:16}];
var ret = Transaction.create(testdata.dataUnspentSign.unspent, outs, opts);
var tx = ret.tx;
var outs = [{
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 16
}];
var ret = Transaction.create(testdata.dataUnspentSign.unspent, outs, opts);
var tx = ret.tx;
var selectedUtxos = ret.selectedUtxos;
var k1 = testdata.dataUnspentSign.keyStrings.slice(0,1);
var k2 = testdata.dataUnspentSign.keyStrings.slice(1,2);
var k3 = testdata.dataUnspentSign.keyStrings.slice(2,3);
var k1 = testdata.dataUnspentSign.keyStrings.slice(0, 1);
var k2 = testdata.dataUnspentSign.keyStrings.slice(1, 2);
var k3 = testdata.dataUnspentSign.keyStrings.slice(2, 3);
tx.sign(selectedUtxos, k1).should.equal(false);
tx.sign(selectedUtxos, k2).should.equal(false);
tx.sign(selectedUtxos, k3).should.equal(true);
});
it('#createAndSign: should generate dynamic fee and readjust (and not) the selected UTXOs', function() {
//this cases exceeds the input by 1mbtc AFTEr calculating the dynamic fee,
//so, it should trigger adding a new 10BTC utxo
var utxos =testdata.dataUnspentSign.unspent;
var utxos = testdata.dataUnspentSign.unspent;
var outs = [];
var n =101;
for (var i=0; i<n; i++) {
outs.push({address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.01});
var n = 101;
for (var i = 0; i < n; i++) {
outs.push({
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.01
});
}
var ret = Transaction.createAndSign(utxos, outs, testdata.dataUnspentSign.keyStrings, opts);
var ret = Transaction.createAndSign(utxos, outs, testdata.dataUnspentSign.keyStrings, opts);
var tx = ret.tx;
tx.getSize().should.equal(3560);
@ -238,15 +307,18 @@ describe('Transaction', function() {
//this is the complementary case, it does not trigger a new utxo
var utxos =testdata.dataUnspentSign.unspent;
var outs = [];
var n =100;
for (var i=0; i<n; i++) {
outs.push({address:'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE', amount:0.01});
utxos = testdata.dataUnspentSign.unspent;
outs = [];
n = 100;
for (i = 0; i < n; i++) {
outs.push({
address: 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE',
amount: 0.01
});
}
var ret = Transaction.createAndSign(utxos, outs, testdata.dataUnspentSign.keyStrings, opts);
var tx = ret.tx;
ret = Transaction.createAndSign(utxos, outs, testdata.dataUnspentSign.keyStrings, opts);
tx = ret.tx;
tx.getSize().should.equal(3485);
// ins = 1.0101 BTC (1 inputs: 1.0101);
@ -260,39 +332,49 @@ describe('Transaction', function() {
});
// Read tests from test/data/tx_valid.json
// Format is an array of arrays
// Inner arrays are either [ "comment" ]
// or [[[prevout hash, prevout index, prevout scriptPubKey], [input 2], ...],"], serializedTransaction, enforceP2SH
// ... where all scripts are stringified scripts.
testdata.dataTxValid.forEach(function(datum) {
if (datum.length === 3) {
it.skip('valid tx=' + datum[1], function(done) {
var inputs = datum[0];
var map = {};
inputs.forEach(function(vin) {
var hash = vin[0];
var index = vin[1];
var scriptPubKey = new Script(new Buffer(vin[2]));
map[[hash, index]] = scriptPubKey; //Script.fromStringContent(scriptPubKey);
console.log(scriptPubKey.getStringContent());
console.log('********************************');
done();
});
var raw = new Buffer(datum[1], 'hex');
var tx = new Transaction();
tx.parse(raw);
buffertools.toHex(tx.serialize()).should.equal(buffertools.toHex(raw));
/*
* Bitcoin core transaction tests
*/
// Verify that known valid transactions are intepretted correctly
var coreTest = function(data, valid) {
data.forEach(function(datum) {
if (datum.length < 3) return;
var raw = datum[1];
var verifyP2SH = datum[2];
var i = 0;
var stx = tx.getStandardizedObject();
tx.ins.forEach(function(txin) {
var scriptPubKey = map[[stx. in [i].prev_out.hash, stx. in [i].prev_out.n]];
i += 1;
});
it.skip((valid ? '' : 'in') + 'valid tx=' + raw, function(done) {
var cb = function(err, results) {
should.not.exist(err);
should.exist(results);
results.should.equal(valid);
done();
};
var testTx = parse_test_transaction(datum);
buffertools.toHex(testTx.transaction.serialize()).should.equal(raw);
var inputs = testTx.transaction.inputs();
for (var i = 0; i < inputs.length; i++) {
var input = inputs[i];
buffertools.reverse(input[0]);
input[0] = buffertools.toHex(input[0]);
var mapKey = [input];
var scriptPubKey = testTx.inputs[mapKey];
if (!scriptPubKey) throw new Error('Bad test: '+datum);
testTx.transaction.verifyInput(
i,
scriptPubKey, {
verifyP2SH: verifyP2SH,
dontVerifyStrictEnc: true
},
cb);
}
});
}
});
});
};
coreTest(testdata.dataTxValid, true);
coreTest(testdata.dataTxInvalid, false);
});

142
util/util.js
View File

@ -1,54 +1,51 @@
var crypto = require('crypto');
var bignum = require('bignum');
var Binary = require('binary');
var Put = require('bufferput');
var buffertools = require('buffertools');
var browser;
if (!process.versions) {
// browser version
var inBrowser = !process.versions;
if (inBrowser) {
browser = require('../browser/vendor-bundle.js');
}
var sha256 = exports.sha256 = function (data) {
var sha256 = exports.sha256 = function(data) {
return new Buffer(crypto.createHash('sha256').update(data).digest('binary'), 'binary');
};
var ripe160 = exports.ripe160 = function (data) {
var ripe160 = exports.ripe160 = function(data) {
if (!Buffer.isBuffer(data)) {
throw new Error('arg should be a buffer');
}
if (!process.versions) {
if (inBrowser) {
var w = new browser.crypto31.lib.WordArray.init(Crypto.util.bytesToWords(data), data.length);
var wordArray = browser.crypto31.RIPEMD160(w);
var words = wordArray.words;
var answer = [];
for (var b = 0; b < words.length * 32; b += 8) {
answer.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
answer.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
}
return new Buffer(answer, 'hex');
}
return new Buffer(crypto.createHash('rmd160').update(data).digest('binary'), 'binary');
};
var sha1 = exports.sha1 = function (data) {
var sha1 = exports.sha1 = function(data) {
return new Buffer(crypto.createHash('sha1').update(data).digest('binary'), 'binary');
};
var twoSha256 = exports.twoSha256 = function (data) {
var twoSha256 = exports.twoSha256 = function(data) {
return sha256(sha256(data));
};
var sha256ripe160 = exports.sha256ripe160 = function (data) {
var sha256ripe160 = exports.sha256ripe160 = function(data) {
return ripe160(sha256(data));
};
/**
* Format a block hash like the official client does.
*/
var formatHash = exports.formatHash = function (hash) {
var formatHash = exports.formatHash = function(hash) {
var hashEnd = new Buffer(10);
hash.copy(hashEnd, 0, 22, 32);
return buffertools.reverse(hashEnd).toString('hex');
@ -57,7 +54,7 @@ var formatHash = exports.formatHash = function (hash) {
/**
* Display the whole hash, as hex, in correct endian order.
*/
var formatHashFull = exports.formatHashFull = function (hash) {
var formatHashFull = exports.formatHashFull = function(hash) {
var copy = new Buffer(hash.length);
hash.copy(copy);
var hex = buffertools.toHex(buffertools.reverse(copy));
@ -69,13 +66,13 @@ var formatHashFull = exports.formatHashFull = function (hash) {
*
* Formats a block hash by removing leading zeros and truncating to 10 characters.
*/
var formatHashAlt = exports.formatHashAlt = function (hash) {
var formatHashAlt = exports.formatHashAlt = function(hash) {
var hex = formatHashFull(hash);
hex = hex.replace(/^0*/, '');
return hex.substr(0, 10);
};
var formatBuffer = exports.formatBuffer = function (buffer, maxLen) {
var formatBuffer = exports.formatBuffer = function(buffer, maxLen) {
// Calculate amount of bytes to display
if (maxLen === null) {
maxLen = 10;
@ -96,41 +93,47 @@ var formatBuffer = exports.formatBuffer = function (buffer, maxLen) {
return output;
};
var valueToBigInt = exports.valueToBigInt = function (valueBuffer) {
var valueToBigInt = exports.valueToBigInt = function(valueBuffer) {
if (Buffer.isBuffer(valueBuffer)) {
return bignum.fromBuffer(valueBuffer, {endian: 'little', size: 8});
return bignum.fromBuffer(valueBuffer, {
endian: 'little',
size: 8
});
} else {
return valueBuffer;
}
};
var bigIntToValue = exports.bigIntToValue = function (valueBigInt) {
var bigIntToValue = exports.bigIntToValue = function(valueBigInt) {
if (Buffer.isBuffer(valueBigInt)) {
return valueBigInt;
} else {
return valueBigInt.toBuffer({endian: 'little', size: 8});
return valueBigInt.toBuffer({
endian: 'little',
size: 8
});
}
};
var fitsInNBits = function(integer, n) {
// TODO: make this efficient!!!
return integer.toString(2).replace('-','').length < n;
return integer.toString(2).replace('-', '').length < n;
};
exports.bytesNeededToStore = bytesNeededToStore = function(integer) {
if (integer === 0) return 0;
return Math.ceil(((integer).toString(2).replace('-','').length + 1)/ 8);
return Math.ceil(((integer).toString(2).replace('-', '').length + 1) / 8);
};
exports.negativeBuffer = negativeBuffer = function(b) {
// implement two-complement negative
var c = new Buffer(b.length);
// negate each byte
for (var i=0; i<b.length; i++){
for (var i = 0; i < b.length; i++) {
c[i] = ~b[i];
if (c[i] < 0) c[i] += 256;
}
// add one
for (var i=b.length - 1; i>=0; i--){
for (var i = b.length - 1; i >= 0; i--) {
c[i] += 1;
if (c[i] >= 256) c[i] -= 256;
if (c[i] !== 0) break;
@ -141,7 +144,7 @@ exports.negativeBuffer = negativeBuffer = function(b) {
/*
* Transforms an integer into a buffer using two-complement encoding
* For example, 1 is encoded as 01 and -1 is encoded as ff
* For more info see:
* For more info see:
* http://en.wikipedia.org/wiki/Signed_number_representations#Two.27s_complement
*/
exports.intToBuffer2C = function(integer) {
@ -149,9 +152,9 @@ exports.intToBuffer2C = function(integer) {
var buf = new Put();
var s = integer.toString(16);
var neg = s[0] === '-';
s = s.replace('-','');
for (var i=0; i<size; i++) {
var si = s.substring(s.length - 2*(i+1), s.length - 2*(i));
s = s.replace('-', '');
for (var i = 0; i < size; i++) {
var si = s.substring(s.length - 2 * (i + 1), s.length - 2 * (i));
if (si.lenght === 1) {
si = '0' + si;
}
@ -184,7 +187,7 @@ var padSign = function(b) {
/*
* Transforms an integer into a buffer using sign+magnitude encoding
* For example, 1 is encoded as 01 and -1 is encoded as 81
* For more info see:
* For more info see:
* http://en.wikipedia.org/wiki/Signed_number_representations#Signed_magnitude_representation
*/
exports.intToBufferSM = function(v) {
@ -234,50 +237,45 @@ exports.bufferSMToInt = function(v) {
var formatValue = exports.formatValue = function (valueBuffer) {
var formatValue = exports.formatValue = function(valueBuffer) {
var value = valueToBigInt(valueBuffer).toString();
var integerPart = value.length > 8 ? value.substr(0, value.length-8) : '0';
var decimalPart = value.length > 8 ? value.substr(value.length-8) : value;
var integerPart = value.length > 8 ? value.substr(0, value.length - 8) : '0';
var decimalPart = value.length > 8 ? value.substr(value.length - 8) : value;
while (decimalPart.length < 8) {
decimalPart = "0"+decimalPart;
decimalPart = "0" + decimalPart;
}
decimalPart = decimalPart.replace(/0*$/, '');
while (decimalPart.length < 2) {
decimalPart += "0";
}
return integerPart+"."+decimalPart;
return integerPart + "." + decimalPart;
};
var reFullVal = /^\s*(\d+)\.(\d+)/;
var reFracVal = /^\s*\.(\d+)/;
var reWholeVal = /^\s*(\d+)/;
function padFrac(frac)
{
frac=frac.substr(0,8); //truncate to 8 decimal places
function padFrac(frac) {
frac = frac.substr(0, 8); //truncate to 8 decimal places
while (frac.length < 8)
frac = frac + '0';
return frac;
}
function parseFullValue(res)
{
function parseFullValue(res) {
return bignum(res[1]).mul('100000000').add(padFrac(res[2]));
}
function parseFracValue(res)
{
function parseFracValue(res) {
return bignum(padFrac(res[1]));
}
function parseWholeValue(res)
{
function parseWholeValue(res) {
return bignum(res[1]).mul('100000000');
}
exports.parseValue = function parseValue(valueStr)
{
if (typeof valueStr !== 'string')
exports.parseValue = function parseValue(valueStr) {
if (typeof valueStr !== 'string')
valueStr = valueStr.toString();
var res = valueStr.match(reFullVal);
@ -296,11 +294,11 @@ exports.parseValue = function parseValue(valueStr)
};
// Utility that synchronizes function calls based on a key
var createSynchrotron = exports.createSynchrotron = function (fn) {
var createSynchrotron = exports.createSynchrotron = function(fn) {
var table = {};
return function (key) {
return function(key) {
var args = Array.prototype.slice.call(arguments);
var run = function () {
var run = function() {
// Function fn() will call when it finishes
args[0] = function next() {
if (table[key]) {
@ -333,21 +331,23 @@ var createSynchrotron = exports.createSynchrotron = function (fn) {
*
* @returns Buffer random nonce
*/
var generateNonce = exports.generateNonce = function () {
var b32 = 0x100000000, ff = 0xff;
var b = new Buffer(8), i = 0;
var generateNonce = exports.generateNonce = function() {
var b32 = 0x100000000,
ff = 0xff;
var b = new Buffer(8),
i = 0;
// Generate eight random bytes
r = Math.random()*b32;
r = Math.random() * b32;
b[i++] = r & ff;
b[i++] = (r=r>>>8) & ff;
b[i++] = (r=r>>>8) & ff;
b[i++] = (r=r>>>8) & ff;
r = Math.random()*b32;
b[i++] = (r = r >>> 8) & ff;
b[i++] = (r = r >>> 8) & ff;
b[i++] = (r = r >>> 8) & ff;
r = Math.random() * b32;
b[i++] = r & ff;
b[i++] = (r=r>>>8) & ff;
b[i++] = (r=r>>>8) & ff;
b[i++] = (r=r>>>8) & ff;
b[i++] = (r = r >>> 8) & ff;
b[i++] = (r = r >>> 8) & ff;
b[i++] = (r = r >>> 8) & ff;
return b;
};
@ -357,10 +357,10 @@ var generateNonce = exports.generateNonce = function () {
*
* This function calculates the difficulty target given the difficulty bits.
*/
var decodeDiffBits = exports.decodeDiffBits = function (diffBits, asBigInt) {
var decodeDiffBits = exports.decodeDiffBits = function(diffBits, asBigInt) {
diffBits = +diffBits;
var target = bignum(diffBits & 0xffffff);
target = target.shiftLeft(8*((diffBits >>> 24) - 3));
target = target.shiftLeft(8 * ((diffBits >>> 24) - 3));
if (asBigInt) {
return target;
@ -370,7 +370,7 @@ var decodeDiffBits = exports.decodeDiffBits = function (diffBits, asBigInt) {
var diffBuf = target.toBuffer();
var targetBuf = new Buffer(32);
buffertools.fill(targetBuf, 0);
diffBuf.copy(targetBuf, 32-diffBuf.length);
diffBuf.copy(targetBuf, 32 - diffBuf.length);
return targetBuf;
};
@ -393,8 +393,8 @@ var encodeDiffBits = exports.encodeDiffBits = function encodeDiffBits(target) {
var compact = size << 24;
if (size >= 1) compact |= mpiBuf[4] << 16;
if (size >= 2) compact |= mpiBuf[5] << 8;
if (size >= 3) compact |= mpiBuf[6] ;
if (size >= 2) compact |= mpiBuf[5] << 8;
if (size >= 3) compact |= mpiBuf[6];
return compact;
};
@ -405,16 +405,20 @@ var encodeDiffBits = exports.encodeDiffBits = function encodeDiffBits(target) {
* This function calculates the maximum difficulty target divided by the given
* difficulty target.
*/
var calcDifficulty = exports.calcDifficulty = function (target) {
var calcDifficulty = exports.calcDifficulty = function(target) {
if (!Buffer.isBuffer(target)) {
target = decodeDiffBits(target);
}
var targetBigint = bignum.fromBuffer(target, {order: 'forward'});
var maxBigint = bignum.fromBuffer(MAX_TARGET, {order: 'forward'});
var targetBigint = bignum.fromBuffer(target, {
order: 'forward'
});
var maxBigint = bignum.fromBuffer(MAX_TARGET, {
order: 'forward'
});
return maxBigint.div(targetBigint).toNumber();
};
var reverseBytes32 = exports.reverseBytes32 = function (data) {
var reverseBytes32 = exports.reverseBytes32 = function(data) {
if (data.length % 4) {
throw new Error("Util.reverseBytes32(): Data length must be multiple of 4");
}

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