1281 lines
29 KiB
JavaScript
1281 lines
29 KiB
JavaScript
/**
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* tx.js - transaction object for bcoin
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* Copyright (c) 2014-2015, Fedor Indutny (MIT License)
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* https://github.com/indutny/bcoin
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*/
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var bn = require('bn.js');
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var bcoin = require('../bcoin');
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var utils = require('./utils');
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var assert = utils.assert;
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var constants = bcoin.protocol.constants;
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var Script = bcoin.script;
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var BufferReader = require('./reader');
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var BufferWriter = require('./writer');
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/**
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* TX
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*/
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function TX(data, block, index) {
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if (!(this instanceof TX))
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return new TX(data, block, index);
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if (!data)
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data = {};
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this.type = 'tx';
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this.version = data.version || 1;
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this.flag = data.flag || 1;
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this.inputs = [];
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this.outputs = [];
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this.locktime = data.locktime || 0;
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this.ts = data.ts || 0;
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this.block = data.block || null;
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this.index = data.index != null ? data.index : -1;
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this.ps = this.ts === 0 ? utils.now() : 0;
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this._hash = null;
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this._whash = null;
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this._raw = data._raw || null;
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this._size = data._size || 0;
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this._witnessSize = data._witnessSize || 0;
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this.height = data.height != null ? data.height : -1;
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this._chain = data.chain;
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// assert(data.inputs.length !== 0);
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// assert(data.outputs.length !== 0);
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data.inputs.forEach(function(input) {
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this.inputs.push(new bcoin.input(input, this));
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}, this);
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data.outputs.forEach(function(output) {
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this.outputs.push(new bcoin.output(output, this));
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}, this);
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if (block && this.ts === 0) {
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if (block.type === 'merkleblock') {
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if (block.hasTX(this.hash('hex')))
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this.setBlock(block, index);
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} else {
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this.setBlock(block, index);
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}
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}
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}
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TX.prototype.setBlock = function setBlock(block, index) {
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this.ts = block.ts;
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this.block = block.hash('hex');
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this.height = block.height;
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this.index = index;
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};
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TX.prototype.hash = function hash(enc) {
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if (!this._hash)
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this._hash = utils.dsha256(this.renderNormal());
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return enc === 'hex' ? utils.toHex(this._hash) : this._hash;
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};
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TX.prototype.witnessHash = function witnessHash(enc) {
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if (this.isCoinbase()) {
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return enc === 'hex'
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? utils.toHex(constants.zeroHash)
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: utils.slice(constants.zeroHash);
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}
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if (!this.hasWitness())
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return this.hash(enc);
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if (!this._whash)
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this._whash = utils.dsha256(this.renderWitness());
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return enc === 'hex' ? utils.toHex(this._whash) : this._whash;
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};
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TX.prototype.render = function render() {
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return this.getRaw();
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};
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TX.prototype.renderNormal = function renderNormal() {
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var raw = this.getRaw();
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if (!bcoin.protocol.parser.isWitnessTX(raw))
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return raw;
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return bcoin.protocol.framer.tx(this);
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};
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TX.prototype.renderWitness = function renderWitness() {
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var raw = this.getRaw();
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if (bcoin.protocol.parser.isWitnessTX(raw))
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return raw;
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return bcoin.protocol.framer.witnessTX(this);
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};
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TX.prototype.getRaw = function getRaw() {
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var raw;
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if (this._raw) {
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assert(this._size > 0);
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assert(this._witnessSize >= 0);
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return this._raw;
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}
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if (this.hasWitness())
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raw = bcoin.protocol.framer.witnessTX(this);
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else
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raw = bcoin.protocol.framer.tx(this);
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// this._raw = raw;
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this._size = raw.length;
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this._witnessSize = raw._witnessSize;
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return raw;
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};
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TX.prototype.getVirtualSize = function getVirtualSize() {
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var size, witnessSize, base;
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this.getRaw();
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size = this._size;
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witnessSize = this._witnessSize;
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base = size - witnessSize;
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return (base * 4 + witnessSize + 3) / 4 | 0;
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};
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TX.prototype.getSize = function getSize() {
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return this.getRaw().length;
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};
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TX.prototype.hasWitness = function hasWitness() {
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var i;
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for (i = 0; i < this.inputs.length; i++) {
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if (this.inputs[i].witness.items.length > 0)
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return true;
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}
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return false;
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};
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TX.prototype._inputIndex = function _inputIndex(hash, index) {
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var i, ex;
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for (i = 0; i < this.inputs.length; i++) {
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ex = this.inputs[i];
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if (ex.prevout.hash === hash && ex.prevout.index === index)
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return i;
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}
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return -1;
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};
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TX.prototype.signatureHash = function signatureHash(index, prev, type, version) {
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assert(version >= 0 && version <= 1);
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// Traditional sighashing
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if (version === 0)
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return this.signatureHashV0(index, prev, type);
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// Segwit sighashing
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if (version === 1)
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return this.signatureHashV1(index, prev, type);
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};
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TX.prototype.signatureHashV0 = function signatureHashV0(index, prev, type) {
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var p = new BufferWriter();
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var i, copy;
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if (typeof index !== 'number')
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index = this.inputs.indexOf(index);
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if (typeof type === 'string')
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type = constants.hashType[type];
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assert(index >= 0 && index < this.inputs.length);
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assert(prev instanceof bcoin.script);
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// Clone the transaction.
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copy = {
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version: this.version,
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inputs: [],
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outputs: [],
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locktime: this.locktime
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};
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for (i = 0; i < this.inputs.length; i++) {
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copy.inputs.push({
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prevout: this.inputs[i].prevout,
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script: this.inputs[i].script.clone(),
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witness: this.inputs[i].witness.clone(),
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sequence: this.inputs[i].sequence
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});
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}
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for (i = 0; i < this.outputs.length; i++) {
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copy.outputs.push({
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value: this.outputs[i].value,
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script: this.outputs[i].script.clone()
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});
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}
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// Remove all signatures.
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for (i = 0; i < copy.inputs.length; i++)
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copy.inputs[i].script = new Script([]);
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// Set our input to previous output's script
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copy.inputs[index].script = prev;
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if ((type & 0x1f) === constants.hashType.none) {
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// Drop all outputs. We don't want to sign them.
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copy.outputs.length = 0;
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// Allow input sequence updates for other inputs.
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for (i = 0; i < copy.inputs.length; i++) {
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if (i !== index)
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copy.inputs[i].sequence = 0;
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}
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} else if ((type & 0x1f) === constants.hashType.single) {
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// Bitcoind used to return 1 as an error code:
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// it ended up being treated like a hash.
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if (index >= copy.outputs.length)
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return utils.slice(constants.oneHash);
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// Drop all the outputs after the input index.
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copy.outputs.length = index + 1;
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// Null outputs that are not the at current input index.
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for (i = 0; i < copy.outputs.length; i++) {
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if (i !== index) {
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copy.outputs[i].script = new Script([]);
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copy.outputs[i].value = new bn('ffffffffffffffff', 'hex');
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}
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}
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// Allow input sequence updates for other inputs.
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for (i = 0; i < copy.inputs.length; i++) {
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if (i !== index)
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copy.inputs[i].sequence = 0;
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}
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}
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// Only sign our input. Allows anyone to add inputs.
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if (type & constants.hashType.anyonecanpay) {
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copy.inputs[0] = copy.inputs[index];
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copy.inputs.length = 1;
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}
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// Render the copy and append the hashtype.
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bcoin.protocol.framer.tx(copy, p);
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p.writeU32(type);
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return utils.dsha256(p.render());
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};
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TX.prototype.signatureHashV1 = function signatureHashV1(index, prev, type) {
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var p = new BufferWriter();
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var i, prevout, hashPrevouts, hashSequence, hashOutputs;
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if (typeof index !== 'number')
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index = this.inputs.indexOf(index);
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if (typeof type === 'string')
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type = constants.hashType[type];
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assert(index >= 0 && index < this.inputs.length);
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assert(prev instanceof bcoin.script);
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if (!(type & constants.hashType.anyonecanpay)) {
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hashPrevouts = new BufferWriter();
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for (i = 0; i < this.inputs.length; i++) {
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prevout = this.inputs[i].prevout;
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hashPrevouts.writeHash(prevout.hash);
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hashPrevouts.writeU32(prevout.index);
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}
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hashPrevouts = utils.dsha256(hashPrevouts.render());
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} else {
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hashPrevouts = utils.slice(constants.zeroHash);
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}
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if (!(type & constants.hashType.anyonecanpay)
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&& (type & 0x1f) !== constants.hashType.single
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&& (type & 0x1f) !== constants.hashType.none) {
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hashSequence = new BufferWriter();
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for (i = 0; i < this.inputs.length; i++)
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hashSequence.writeU32(this.inputs[i].sequence);
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hashSequence = utils.dsha256(hashSequence.render());
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} else {
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hashSequence = utils.slice(constants.zeroHash);
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}
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if ((type & 0x1f) !== constants.hashType.single
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&& (type & 0x1f) !== constants.hashType.none) {
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hashOutputs = new BufferWriter();
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for (i = 0; i < this.outputs.length; i++)
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bcoin.protocol.framer.output(this.outputs[i], hashOutputs);
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hashOutputs = utils.dsha256(hashOutputs.render());
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} else if ((type & 0x1f) === constants.hashType.single && index < this.outputs.length) {
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hashOutputs = bcoin.protocol.framer.output(this.outputs[index]);
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hashOutputs = utils.dsha256(hashOutputs);
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} else {
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hashOutputs = utils.slice(constants.zeroHash);
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}
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p.write32(this.version);
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p.writeBytes(hashPrevouts);
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p.writeBytes(hashSequence);
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p.writeHash(this.inputs[index].prevout.hash);
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p.writeU32(this.inputs[index].prevout.index);
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p.writeVarBytes(prev.encode());
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p.write64(this.inputs[index].output.value);
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p.writeU32(this.inputs[index].sequence);
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p.writeBytes(hashOutputs);
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p.writeU32(this.locktime);
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p.writeU32(type);
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return utils.dsha256(p.render());
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};
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TX.prototype.verify = function verify(index, force, flags) {
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// Valid if included in block
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if (!force && this.ts !== 0)
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return true;
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if (this.inputs.length === 0)
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return false;
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if (index && typeof index === 'object')
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index = this.inputs.indexOf(index);
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if (index != null)
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assert(this.inputs[index]);
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if (this.isCoinbase())
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return true;
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return this.inputs.every(function(input, i) {
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if (index != null && i !== index)
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return true;
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if (!input.output) {
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utils.debug('Warning: Not all outputs available for tx.verify().');
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return false;
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}
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return bcoin.script.verify(
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input.script,
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input.witness,
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input.output.script,
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this,
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i,
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flags
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);
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}, this);
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};
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TX.prototype.verifyAsync = function verifyAsync(index, force, flags, callback) {
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var self = this;
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utils.nextTick(function() {
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var res;
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try {
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res = self.verify(index, force, flags);
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} catch (e) {
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return callback(e);
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}
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return callback(null, res);
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});
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};
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TX.prototype.isCoinbase = function isCoinbase() {
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return this.inputs.length === 1 && +this.inputs[0].prevout.hash === 0;
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};
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TX.prototype.getFee = function getFee() {
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if (!this.hasPrevout())
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return new bn(0);
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return this.getInputValue().sub(this.getOutputValue());
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};
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TX.prototype.getInputValue = function getInputValue() {
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var acc = new bn(0);
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if (this.inputs.length === 0)
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return acc;
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if (!this.hasPrevout())
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return acc;
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return this.inputs.reduce(function(acc, input) {
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return acc.iadd(input.output.value);
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}, acc);
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};
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TX.prototype.getOutputValue = function getOutputValue() {
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var acc = new bn(0);
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if (this.outputs.length === 0)
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return acc;
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return this.outputs.reduce(function(acc, output) {
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return acc.iadd(output.value);
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}, acc);
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};
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TX.prototype.getFunds = function getFunds(side) {
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if (side === 'in' || side === 'input')
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return this.getInputValue();
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return this.getOutputValue();
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};
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TX.prototype.getInputAddresses = function getInputAddresses() {
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var table = {};
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var addresses = [];
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var i, address;
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for (i = 0; i < this.inputs.length; i++) {
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address = this.inputs[i].getAddress();
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if (address && !table[address]) {
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table[address] = true;
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addresses.push(address);
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}
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}
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addresses.table = table;
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return addresses;
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};
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TX.prototype.getOutputAddresses = function getOutputAddresses() {
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var table = {};
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var addresses = [];
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var i, address;
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for (i = 0; i < this.outputs.length; i++) {
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address = this.outputs[i].getAddress();
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if (address && !table[address]) {
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table[address] = true;
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addresses.push(address);
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}
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}
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addresses.table = table;
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return addresses;
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};
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TX.prototype.getAddresses = function getAddresses() {
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var input = this.getInputAddresses();
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var output = this.getOutputAddresses();
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var i;
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for (i = 0; i < output.length; i++) {
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if (!input.table[output[i]]) {
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input.table[output[i]] = true;
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input.push(output[i]);
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}
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}
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return input;
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};
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TX.prototype.testInputs = function testInputs(addressTable, index) {
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var i, input;
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if (typeof addressTable === 'string')
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addressTable = [addressTable];
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if (Array.isArray(addressTable)) {
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addressTable = addressTable.reduce(function(out, address) {
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out[address] = true;
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return out;
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}, {});
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}
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if (index && typeof index === 'object')
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index = this.inputs.indexOf(index);
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if (index != null)
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assert(this.inputs[index]);
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for (i = 0; i < this.inputs.length; i++) {
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if (index != null && i !== index)
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continue;
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input = this.inputs[i];
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if (input.test(addressTable))
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return true;
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}
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return false;
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};
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TX.prototype.testOutputs = function testOutputs(addressTable, index) {
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var i, output;
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if (typeof addressTable === 'string')
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addressTable = [addressTable];
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if (Array.isArray(addressTable)) {
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addressTable = addressTable.reduce(function(out, address) {
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out[address] = true;
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return out;
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}, {});
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}
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if (index && typeof index === 'object')
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index = this.outputs.indexOf(index);
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if (index != null)
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assert(this.outputs[index]);
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for (i = 0; i < this.outputs.length; i++) {
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if (index != null && i !== index)
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continue;
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output = this.outputs[i];
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if (output.test(addressTable))
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return true;
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}
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return false;
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};
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|
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TX.prototype.hasPrevout = function hasPrevout() {
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if (this.inputs.length === 0)
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return false;
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return this.inputs.every(function(input) {
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return !!input.output;
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});
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};
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TX.prototype.fillPrevout = function fillPrevout(txs, unspent) {
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var inputs;
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if (txs instanceof TX) {
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txs = [txs];
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unspent = null;
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} else if (txs instanceof bcoin.coin) {
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unspent = [txs];
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txs = null;
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} else if (txs instanceof bcoin.txpool) {
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unspent = txs._unspent;
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|
txs = txs._all;
|
|
} else if (txs instanceof bcoin.wallet && txs.tx) {
|
|
unspent = txs.tx._unspent;
|
|
txs = txs.tx._all;
|
|
}
|
|
|
|
if (Array.isArray(txs)) {
|
|
txs = txs.reduce(function(out, tx) {
|
|
out[tx.hash('hex')] = tx;
|
|
return out;
|
|
}, {});
|
|
}
|
|
|
|
if (Array.isArray(unspent)) {
|
|
unspent = unspent.reduce(function(out, coin) {
|
|
out[coin.hash + '/' + coin.index] = coin;
|
|
return out;
|
|
}, {});
|
|
}
|
|
|
|
inputs = this.inputs.filter(function(input) {
|
|
var key;
|
|
|
|
if (!input.output) {
|
|
key = input.prevout.hash + '/' + input.prevout.index;
|
|
if (unspent && unspent[key])
|
|
input.output = unspent[key];
|
|
else if (txs && txs[input.prevout.hash])
|
|
input.output = bcoin.coin(txs[input.prevout.hash], input.prevout.index);
|
|
}
|
|
|
|
return !!input.output;
|
|
}, this);
|
|
|
|
return inputs.length === this.inputs.length;
|
|
};
|
|
|
|
TX.prototype.isFinal = function isFinal(height, ts) {
|
|
var threshold = constants.locktimeThreshold;
|
|
var i;
|
|
|
|
if (this.locktime === 0)
|
|
return true;
|
|
|
|
if (this.locktime < (this.locktime < threshold ? height : ts))
|
|
return true;
|
|
|
|
for (i = 0; i < this.inputs.length; i++) {
|
|
if (this.inputs[i].sequence !== 0xffffffff)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
TX.prototype._getSigops = function _getSigops(scriptHash, accurate) {
|
|
var total = 0;
|
|
|
|
this.inputs.forEach(function(input) {
|
|
var prev;
|
|
|
|
if (!input.output)
|
|
return;
|
|
|
|
prev = input.output.script;
|
|
|
|
total += input.script.getSigops(accurate);
|
|
|
|
if (scriptHash && !this.isCoinbase()) {
|
|
if (!prev.isScripthash())
|
|
return;
|
|
|
|
if (!input.script.isPushOnly())
|
|
return;
|
|
|
|
prev = input.script.getRedeem();
|
|
|
|
if (!prev)
|
|
return;
|
|
|
|
total += prev.getSigops(true);
|
|
}
|
|
}, this);
|
|
|
|
this.outputs.forEach(function(output) {
|
|
total += output.script.getSigops(accurate);
|
|
}, this);
|
|
|
|
return total;
|
|
};
|
|
|
|
TX.prototype.getSigops = function getSigops(scriptHash, accurate) {
|
|
var cost = this._getSigops(scriptHash, accurate) * 4;
|
|
|
|
this.inputs.forEach(function(input) {
|
|
var prev;
|
|
|
|
if (!input.output)
|
|
return;
|
|
|
|
prev = input.output.script;
|
|
|
|
if (prev.isScripthash())
|
|
prev = input.script.getRedeem();
|
|
|
|
if (prev && prev.isWitnessScripthash()) {
|
|
prev = input.witness.getRedeem();
|
|
cost += prev.getSigops(true);
|
|
} else {
|
|
cost += 0;
|
|
}
|
|
}, this);
|
|
|
|
this.outputs.forEach(function(output) {
|
|
if (output.script.isWitnessPubkeyhash())
|
|
cost += 1;
|
|
else
|
|
cost += 0;
|
|
}, this);
|
|
|
|
return (cost + 3) / 4 | 0;
|
|
};
|
|
|
|
// IsStandardTx
|
|
TX.prototype.isStandard = function isStandard(flags, ts, height, ret) {
|
|
var i, input, output, type;
|
|
var nulldata = 0;
|
|
var maxVersion = constants.tx.version;
|
|
|
|
if (!ret)
|
|
ret = { reason: null };
|
|
|
|
if (flags == null)
|
|
flags = constants.flags.STANDARD_VERIFY_FLAGS;
|
|
|
|
if (flags & constants.flags.VERIFY_CHECKSEQUENCEVERIFY)
|
|
maxVersion = Math.max(maxVersion, 2);
|
|
|
|
if (this.version < 1 || this.version > maxVersion) {
|
|
ret.reason = 'version';
|
|
return false;
|
|
}
|
|
|
|
if (ts != null) {
|
|
if (!this.isFinal(ts, height)) {
|
|
ret.reason = 'non-final';
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (this.getVirtualSize() > constants.tx.maxSize) {
|
|
ret.reason = 'tx-size';
|
|
return false;
|
|
}
|
|
|
|
for (i = 0; i < this.inputs.length; i++) {
|
|
input = this.inputs[i];
|
|
|
|
if (input.script.getSize() > 1650) {
|
|
ret.reason = 'scriptsig-size';
|
|
return false;
|
|
}
|
|
|
|
// XXX Not accurate
|
|
if (this.isCoinbase())
|
|
continue;
|
|
|
|
if (flags & constants.flags.VERIFY_SIGPUSHONLY) {
|
|
if (!input.script.isPushOnly()) {
|
|
ret.reason = 'scriptsig-not-pushonly';
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < this.outputs.length; i++) {
|
|
output = this.outputs[i];
|
|
type = output.script.getType();
|
|
|
|
if (!output.script.isStandard()) {
|
|
ret.reason = 'scriptpubkey';
|
|
return false;
|
|
}
|
|
|
|
if (type === 'nulldata') {
|
|
nulldata++;
|
|
continue;
|
|
}
|
|
|
|
if (type === 'multisig' && !constants.tx.bareMultisig) {
|
|
ret.reason = 'bare-multisig';
|
|
return false;
|
|
}
|
|
|
|
if (output.value.cmpn(constants.tx.dustThreshold) < 0) {
|
|
ret.reason = 'dust';
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (nulldata > 1) {
|
|
ret.reason = 'multi-op-return';
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
// AreInputsStandard
|
|
TX.prototype.isStandardInputs = function isStandardInputs(flags) {
|
|
var i, input, args, stack, res, redeem, targs, hadWitness;
|
|
var maxSigops = constants.script.maxScripthashSigops;
|
|
|
|
if (flags == null)
|
|
flags = constants.flags.STANDARD_VERIFY_FLAGS;
|
|
|
|
if (this.isCoinbase())
|
|
return true;
|
|
|
|
for (i = 0; i < this.inputs.length; i++) {
|
|
input = this.inputs[i];
|
|
|
|
if (!input.output)
|
|
return false;
|
|
|
|
args = input.output.script.getArgs();
|
|
|
|
if (args < 0)
|
|
return false;
|
|
|
|
stack = new bcoin.script.stack([]);
|
|
|
|
// XXX Not accurate:
|
|
// Failsafe to avoid getting dos'd in case we ever
|
|
// call isStandardInputs before isStandard.
|
|
if (!input.script.isPushOnly())
|
|
return false;
|
|
|
|
res = input.script.execute(stack, this, i, flags, 0);
|
|
|
|
if (!res)
|
|
return false;
|
|
|
|
if ((flags & constants.flags.VERIFY_WITNESS)
|
|
&& input.output.isWitnessProgram()) {
|
|
hadWitness = true;
|
|
|
|
// Input script must be empty.
|
|
if (input.script.code.length !== 0)
|
|
return false;
|
|
|
|
// Verify the program in the output script
|
|
if (!this.isStandardProgram(input.witness, input.output.script, flags))
|
|
return false;
|
|
}
|
|
|
|
if ((flags & constants.flags.VERIFY_P2SH)
|
|
&& input.output.script.isScripthash()) {
|
|
if (stack.length === 0)
|
|
return false;
|
|
|
|
redeem = bcoin.script.getRedeem(stack);
|
|
|
|
if (!redeem)
|
|
return false;
|
|
|
|
// Not accurate?
|
|
if (redeem.getSize() > 520)
|
|
return false;
|
|
|
|
// Also consider scripthash "unknown"?
|
|
if (redeem.getType() === 'unknown') {
|
|
if (redeem.getSigops(true) > maxSigops)
|
|
return false;
|
|
continue;
|
|
}
|
|
|
|
targs = redeem.getArgs();
|
|
if (targs < 0)
|
|
return false;
|
|
args += targs;
|
|
|
|
if ((flags & constants.flags.VERIFY_WITNESS)
|
|
&& redeem.isWitnessProgram()) {
|
|
hasWitness = true;
|
|
|
|
// Input script must be exactly one push of the redeem script.
|
|
if (!(input.script.code.length === 1
|
|
&& utils.isEqual(input.script.code[0], redeem.raw))) {
|
|
return false;
|
|
}
|
|
|
|
// Verify the program in the redeem script
|
|
if (!this.isStandardProgram(input.witness, redeem, flags))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (hadWitness)
|
|
continue;
|
|
|
|
if (stack.length !== args)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
TX.prototype.isStandardProgram = function isStandardProgram(witness, output, flags) {
|
|
var program, witnessScript, j;
|
|
|
|
assert((flags & constants.flags.VERIFY_WITNESS) !== 0);
|
|
assert(output.isWitnessProgram());
|
|
|
|
program = output.getWitnessProgram();
|
|
|
|
if (!program.type)
|
|
return false;
|
|
|
|
if (program.version > 0) {
|
|
if (flags & constants.flags.VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
if (program.type === 'witnesspubkeyhash') {
|
|
if (witness.items.length !== 2)
|
|
return false;
|
|
} else if (program.type === 'witnessscripthash') {
|
|
if (witness.items.length === 0)
|
|
return false;
|
|
} else {
|
|
assert(false);
|
|
}
|
|
|
|
for (j = 0; j < witness.items.length; j++) {
|
|
if (witness.items[j].length > constants.script.maxSize)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
TX.prototype.maxSize = function maxSize() {
|
|
return this.getVirtualSize();
|
|
};
|
|
|
|
TX.prototype.getPriority = function getPriority(height, size) {
|
|
var sum, i, input, age;
|
|
|
|
if (height == null)
|
|
height = this.height;
|
|
|
|
if (height === -1)
|
|
height = null;
|
|
|
|
if (!this.hasPrevout())
|
|
return new bn(0);
|
|
|
|
if (size == null)
|
|
size = this.maxSize();
|
|
|
|
sum = new bn(0);
|
|
|
|
for (i = 0; i < this.inputs.length; i++) {
|
|
input = this.inputs[i];
|
|
|
|
if (!input.output)
|
|
return new bn(0);
|
|
|
|
age = input.output.getConfirmations(height);
|
|
|
|
if (age === -1)
|
|
age = 0;
|
|
|
|
if (age !== 0)
|
|
age += 1;
|
|
|
|
sum.iadd(input.output.value.muln(age));
|
|
}
|
|
|
|
return sum.divn(size);
|
|
};
|
|
|
|
TX.prototype.isFree = function isFree(height, size) {
|
|
var priority;
|
|
|
|
if (!this.hasPrevout())
|
|
return false;
|
|
|
|
if (height == null)
|
|
height = this.height;
|
|
|
|
if (size == null)
|
|
size = this.maxSize();
|
|
|
|
if (size >= constants.tx.maxFreeSize)
|
|
return false;
|
|
|
|
priority = this.getPriority(height, size);
|
|
|
|
return priority.cmp(constants.tx.freeThreshold) > 0;
|
|
};
|
|
|
|
TX.prototype.getMinFee = function getMinFee(size) {
|
|
var fee;
|
|
|
|
if (size == null)
|
|
size = this.maxSize();
|
|
|
|
fee = new bn(constants.tx.minFee).muln(size).divn(1000);
|
|
|
|
if (fee.cmpn(0) === 0 && constants.tx.minFee.cmpn(0) > 0)
|
|
fee = new bn(constants.tx.minFee);
|
|
|
|
return fee;
|
|
};
|
|
|
|
TX.prototype.getHeight = function getHeight() {
|
|
if (this.height !== -1)
|
|
return this.height;
|
|
|
|
if (!this.chain)
|
|
return -1;
|
|
|
|
return this.block ? this.chain.getHeight(this.block) : -1;
|
|
};
|
|
|
|
TX.prototype.getConfirmations = function getConfirmations(height) {
|
|
var top;
|
|
|
|
if (height == null) {
|
|
if (!this.chain)
|
|
return 0;
|
|
|
|
top = this.chain.height;
|
|
} else {
|
|
top = height;
|
|
}
|
|
|
|
height = this.height;
|
|
|
|
if (height === -1)
|
|
return 0;
|
|
|
|
if (top < height)
|
|
return 1;
|
|
|
|
return top - height + 1;
|
|
};
|
|
|
|
TX.prototype.getValue = function getValue() {
|
|
return this.getOutputValue();
|
|
};
|
|
|
|
TX.prototype.hasType = function hasType(type) {
|
|
var i;
|
|
|
|
for (i = 0; i < this.inputs.length; i++) {
|
|
if (this.inputs[i].getType() === type)
|
|
return true;
|
|
}
|
|
|
|
for (i = 0; i < this.outputs.length; i++) {
|
|
if (this.outputs[i].getType() === type)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
};
|
|
|
|
TX.prototype.__defineGetter__('chain', function() {
|
|
return this._chain || bcoin.chain.global;
|
|
});
|
|
|
|
TX.prototype.__defineGetter__('rblock', function() {
|
|
return this.block
|
|
? utils.revHex(this.block)
|
|
: null;
|
|
});
|
|
|
|
TX.prototype.__defineGetter__('rhash', function() {
|
|
return utils.revHex(this.hash('hex'));
|
|
});
|
|
|
|
TX.prototype.__defineGetter__('fee', function() {
|
|
return this.getFee();
|
|
});
|
|
|
|
TX.prototype.__defineGetter__('value', function() {
|
|
return this.getValue();
|
|
});
|
|
|
|
TX.prototype.__defineGetter__('confirmations', function() {
|
|
return this.getConfirmations();
|
|
});
|
|
|
|
TX.prototype.__defineGetter__('priority', function() {
|
|
return this.getPriority();
|
|
});
|
|
|
|
TX.prototype.getPrevout = function getPrevout() {
|
|
var prevout = {};
|
|
|
|
if (this.isCoinbase())
|
|
return [];
|
|
|
|
this.inputs.forEach(function(input) {
|
|
prevout[input.prevout.hash] = true;
|
|
});
|
|
|
|
return Object.keys(prevout);
|
|
};
|
|
|
|
TX.prototype.inspect = function inspect() {
|
|
return {
|
|
type: this.type,
|
|
hash: utils.revHex(this.hash('hex')),
|
|
witnessHash: utils.revHex(this.witnessHash('hex')),
|
|
size: this.getSize(),
|
|
virtualSize: this.getVirtualSize(),
|
|
height: this.height,
|
|
value: utils.btc(this.getValue()),
|
|
fee: utils.btc(this.getFee()),
|
|
confirmations: this.getConfirmations(),
|
|
priority: this.getPriority().toString(10),
|
|
date: new Date(this.ts * 1000).toISOString(),
|
|
block: this.block ? utils.revHex(this.block) : null,
|
|
ts: this.ts,
|
|
index: this.index,
|
|
version: this.version,
|
|
inputs: this.inputs,
|
|
outputs: this.outputs,
|
|
locktime: this.locktime,
|
|
hint: this.hint
|
|
};
|
|
};
|
|
|
|
TX.prototype.toJSON = function toJSON() {
|
|
return {
|
|
type: 'tx',
|
|
hash: utils.revHex(this.hash('hex')),
|
|
witnessHash: utils.revHex(this.witnessHash('hex')),
|
|
height: this.height,
|
|
block: this.block ? utils.revHex(this.block) : null,
|
|
ts: this.ts,
|
|
ps: this.ps,
|
|
index: this.index,
|
|
changeIndex: this.changeIndex || -1,
|
|
version: this.version,
|
|
inputs: this.inputs.map(function(input) {
|
|
return input.toJSON();
|
|
}),
|
|
outputs: this.outputs.map(function(output) {
|
|
return output.toJSON();
|
|
}),
|
|
locktime: this.locktime
|
|
};
|
|
};
|
|
|
|
TX._fromJSON = function fromJSON(json) {
|
|
assert.equal(json.type, 'tx');
|
|
return {
|
|
block: json.block ? utils.revHex(json.block) : null,
|
|
height: json.height,
|
|
ts: json.ts,
|
|
ps: json.ps,
|
|
index: json.index,
|
|
changeIndex: json.changeIndex || -1,
|
|
version: json.version,
|
|
inputs: json.inputs.map(function(input) {
|
|
return bcoin.input._fromJSON(input);
|
|
}),
|
|
outputs: json.outputs.map(function(output) {
|
|
return bcoin.output._fromJSON(output);
|
|
}),
|
|
locktime: json.locktime
|
|
};
|
|
};
|
|
|
|
TX.fromJSON = function fromJSON(json) {
|
|
assert.equal(json.type, 'tx');
|
|
return new TX(TX._fromJSON(json));
|
|
};
|
|
|
|
TX.prototype.toRaw = function toRaw(enc) {
|
|
var data = this.render();
|
|
|
|
if (enc === 'hex')
|
|
data = utils.toHex(data);
|
|
|
|
return data;
|
|
};
|
|
|
|
TX._fromRaw = function _fromRaw(data, enc) {
|
|
if (enc === 'hex')
|
|
data = new Buffer(data, 'hex');
|
|
|
|
return bcoin.protocol.parser.parseTX(data);
|
|
};
|
|
|
|
TX.fromRaw = function fromRaw(data, enc) {
|
|
return new bcoin.tx(TX._fromRaw(data, enc));
|
|
};
|
|
|
|
TX.prototype.toExtended = function toExtended(saveCoins) {
|
|
var height = this.height;
|
|
var index = this.index;
|
|
var changeIndex = this.changeIndex != null ? this.changeIndex : -1;
|
|
var p = new BufferWriter();
|
|
|
|
if (height === -1)
|
|
height = 0x7fffffff;
|
|
|
|
if (index === -1)
|
|
index = 0x7fffffff;
|
|
|
|
if (changeIndex === -1)
|
|
changeIndex = 0x7fffffff;
|
|
|
|
bcoin.protocol.framer.renderTX(this, true, p);
|
|
p.writeU32(height);
|
|
p.writeHash(this.block || constants.zeroHash);
|
|
p.writeU32(this.index);
|
|
p.writeU32(this.ts);
|
|
p.writeU32(this.ps);
|
|
// p.writeU32(changeIndex);
|
|
|
|
if (saveCoins) {
|
|
p.writeVarint(this.inputs.length);
|
|
this.inputs.forEach(function(input) {
|
|
if (!input.output) {
|
|
p.writeVarint(0);
|
|
return;
|
|
}
|
|
|
|
p.writeVarBytes(bcoin.protocol.framer.coin(input.output, false));
|
|
});
|
|
}
|
|
|
|
return p.render();
|
|
};
|
|
|
|
TX._fromExtended = function _fromExtended(buf, saveCoins) {
|
|
var p = new BufferReader(buf);
|
|
var tx, coinCount, coin, i;
|
|
|
|
p.start();
|
|
|
|
tx = bcoin.protocol.parser.parseTX(p);
|
|
|
|
tx.height = p.readU32();
|
|
tx.block = p.readHash('hex');
|
|
tx.index = p.readU32();
|
|
tx.ts = p.readU32();
|
|
tx.ps = p.readU32();
|
|
// tx.changeIndex = p.readU32();
|
|
|
|
if (+tx.block === 0)
|
|
tx.block = null;
|
|
|
|
if (tx.height === 0x7fffffff)
|
|
tx.height = -1;
|
|
|
|
if (tx.index === 0x7fffffff)
|
|
tx.index = -1;
|
|
|
|
if (tx.changeIndex === 0x7fffffff)
|
|
tx.changeIndex = -1;
|
|
|
|
if (saveCoins) {
|
|
coinCount = p.readVarint();
|
|
for (i = 0; i < coinCount; i++) {
|
|
coin = p.readVarBytes();
|
|
if (coin.length === 0)
|
|
continue;
|
|
coin = bcoin.protocol.parser.parseCoin(coin, false);
|
|
coin.hash = tx.inputs[i].prevout.hash;
|
|
coin.index = tx.inputs[i].prevout.index;
|
|
coin.coinbase = false;
|
|
tx.inputs[i].output = new bcoin.coin(coin);
|
|
}
|
|
}
|
|
|
|
p.end();
|
|
|
|
return tx;
|
|
};
|
|
|
|
TX.fromExtended = function fromExtended(buf, saveCoins) {
|
|
return new TX(TX._fromExtended(buf, saveCoins));
|
|
};
|
|
|
|
TX.prototype.toCoins = function toCoins() {
|
|
return bcoin.coins.fromTX(this);
|
|
};
|
|
|
|
TX.isTX = function isTX(obj) {
|
|
return obj
|
|
&& Array.isArray(obj.inputs)
|
|
&& typeof obj.ps === 'number'
|
|
&& typeof obj.getVirtualSize === 'function';
|
|
};
|
|
|
|
/**
|
|
* Expose
|
|
*/
|
|
|
|
module.exports = TX;
|