110 lines
3.1 KiB
JavaScript
110 lines
3.1 KiB
JavaScript
var binpack = require('binpack');
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var buffertools = require('buffertools');
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var util = require('./util.js');
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function Transaction(params){
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var version = params.version || 1,
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inputs = params.inputs || [],
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outputs = params.outputs || [],
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lockTime = params.lockTime || 0;
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this.toBuffer = function(){
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return Buffer.concat([
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binpack.packUInt32(version, 'little'),
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util.varIntBuffer(inputs.length),
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Buffer.concat(inputs.map(function(i){ return i.toBuffer() })),
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util.varIntBuffer(outputs.length),
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Buffer.concat(outputs.map(function(o){ return o.toBuffer() })),
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binpack.packUInt32(lockTime, 'little')
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]);
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};
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this.inputs = inputs;
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this.outputs = outputs;
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}
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function TransactionInput(params){
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var prevOutHash = params.prevOutHash || 0,
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prevOutIndex = params.prevOutIndex,
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sigScript = params.sigScript,
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sequence = params.sequence || 0;
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this.toBuffer = function(){
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sigScriptBuffer = sigScript.toBuffer();
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return Buffer.concat([
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util.uint256BufferFromHash(prevOutHash),
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binpack.packUInt32(prevOutIndex, 'little'),
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util.varIntBuffer(sigScriptBuffer.length),
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sigScriptBuffer,
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binpack.packUInt32(sequence)
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]);
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};
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}
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function TransactionOutput(params){
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var value = params.value,
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pkScriptBuffer = params.pkScriptBuffer;
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this.toBuffer = function(){
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return Buffer.concat([
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binpack.packInt64(value, 'little'),
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util.varIntBuffer(pkScriptBuffer.length),
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pkScriptBuffer
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]);
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};
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}
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function ScriptSig(params){
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var height = params.height,
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flags = params.flags,
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extraNoncePlaceholder = params.extraNoncePlaceholder;
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this.toBuffer = function(){
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return Buffer.concat([
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util.serializeNumber(height),
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new Buffer(flags, 'hex'),
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util.serializeNumber(Date.now() / 1000 | 0),
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new Buffer([extraNoncePlaceholder.length]),
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extraNoncePlaceholder,
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util.serializeString('/nodeStratum/')
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]);
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}
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};
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var Generation = exports.Generation = function Generation(rpcData, publicKey, extraNoncePlaceholder){
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var tx = new Transaction({
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inputs: [new TransactionInput({
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prevOutIndex: Math.pow(2, 32) - 1,
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sigScript: new ScriptSig({
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height: rpcData.height,
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flags: rpcData.coinbaseaux.flags,
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extraNoncePlaceholder: extraNoncePlaceholder
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})
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})],
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outputs: [new TransactionOutput({
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value: rpcData.coinbasevalue,
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pkScriptBuffer: publicKey
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})]
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});
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var txBuffer = tx.toBuffer();
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var epIndex = buffertools.indexOf(txBuffer, extraNoncePlaceholder);
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var p1 = txBuffer.slice(0, epIndex);
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var p2 = txBuffer.slice(epIndex + extraNoncePlaceholder.length);
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this.transaction = tx;
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this.coinbase = [p1, p2];
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}; |