583 lines
16 KiB
JavaScript
583 lines
16 KiB
JavaScript
var imports = require('soop').imports();
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var config = imports.config || require('./config');
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var log = imports.log || require('./util/log');
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var Address = imports.Address || require('./Address');
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var Script = imports.Script || require('./Script');
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var ScriptInterpreter = imports.ScriptInterpreter || require('./ScriptInterpreter');
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var util = imports.util || require('./util/util');
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var bignum = imports.bignum || require('bignum');
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var Put = imports.Put || require('bufferput');
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var Parser = imports.Parser || require('./util/BinaryParser');
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var Step = imports.Step || require('step');
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var buffertools = imports.buffertools || require('buffertools');
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var error = imports.error || require('./util/error');
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var networks = imports.networks || require('./networks');
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var WalletKey = imports.WalletKey || require('./WalletKey');
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var PrivateKey = imports.PrivateKey || require('./PrivateKey');
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var COINBASE_OP = Buffer.concat([util.NULL_HASH, new Buffer('FFFFFFFF', 'hex')]);
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var FEE_PER_1000B_SAT = parseInt(0.0001 * util.COIN);
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Transaction.COINBASE_OP = COINBASE_OP;
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function TransactionIn(data) {
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if ("object" !== typeof data) {
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data = {};
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}
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if (data.o) {
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this.o = data.o;
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} else {
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if (data.oTxHash && typeof data.oIndex !== 'undefined' && data.oIndex >= 0) {
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var hash = new Buffer(data.oTxHash, 'hex');
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hash = buffertools.reverse(hash);
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var voutBuf = new Buffer(4);
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voutBuf.writeUInt32LE(data.oIndex, 0);
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this.o = Buffer.concat([hash, voutBuf]);
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}
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}
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this.s = Buffer.isBuffer(data.s) ? data.s :
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Buffer.isBuffer(data.script) ? data.script : util.EMPTY_BUFFER;
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this.q = data.q ? data.q : data.sequence;
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}
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TransactionIn.prototype.getScript = function getScript() {
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return new Script(this.s);
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};
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TransactionIn.prototype.isCoinBase = function isCoinBase() {
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if (!this.o) return false;
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//The new Buffer is for Firefox compatibility
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return buffertools.compare(new Buffer(this.o), COINBASE_OP) === 0;
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};
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TransactionIn.prototype.serialize = function serialize() {
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var slen = util.varIntBuf(this.s.length);
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var qbuf = new Buffer(4);
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qbuf.writeUInt32LE(this.q, 0);
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var ret = Buffer.concat([this.o, slen, this.s, qbuf]);
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return ret;
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};
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TransactionIn.prototype.getOutpointHash = function getOutpointHash() {
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if ("undefined" !== typeof this.o.outHashCache) {
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return this.o.outHashCache;
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}
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return this.o.outHashCache = this.o.slice(0, 32);
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};
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TransactionIn.prototype.getOutpointIndex = function getOutpointIndex() {
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return (this.o[32]) +
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(this.o[33] << 8) +
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(this.o[34] << 16) +
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(this.o[35] << 24);
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};
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TransactionIn.prototype.setOutpointIndex = function setOutpointIndex(n) {
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this.o[32] = n & 0xff;
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this.o[33] = n >> 8 & 0xff;
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this.o[34] = n >> 16 & 0xff;
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this.o[35] = n >> 24 & 0xff;
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};
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function TransactionOut(data) {
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if ("object" !== typeof data) {
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data = {};
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}
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this.v = data.v ? data.v : data.value;
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this.s = data.s ? data.s : data.script;
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};
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TransactionOut.prototype.getValue = function getValue() {
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return new Parser(this.v).word64lu();
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};
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TransactionOut.prototype.getScript = function getScript() {
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return new Script(this.s);
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};
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TransactionOut.prototype.serialize = function serialize() {
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var slen = util.varIntBuf(this.s.length);
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return Buffer.concat([this.v, slen, this.s]);
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};
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function Transaction(data) {
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if ("object" !== typeof data) {
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data = {};
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}
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this.hash = data.hash || null;
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this.version = data.version;
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this.lock_time = data.lock_time;
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this.ins = Array.isArray(data.ins) ? data.ins.map(function(data) {
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var txin = new TransactionIn();
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txin.s = data.s;
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txin.q = data.q;
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txin.o = data.o;
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return txin;
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}) : [];
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this.outs = Array.isArray(data.outs) ? data.outs.map(function(data) {
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var txout = new TransactionOut();
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txout.v = data.v;
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txout.s = data.s;
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return txout;
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}) : [];
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if (data.buffer) this._buffer = data.buffer;
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};
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this.class = Transaction;
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Transaction.In = TransactionIn;
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Transaction.Out = TransactionOut;
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Transaction.prototype.isCoinBase = function() {
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return this.ins.length == 1 && this.ins[0].isCoinBase();
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};
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Transaction.prototype.isStandard = function isStandard() {
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var i;
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for (i = 0; i < this.ins.length; i++) {
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if (this.ins[i].getScript().getInType() == "Strange") {
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return false;
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}
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}
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for (i = 0; i < this.outs.length; i++) {
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if (this.outs[i].getScript().getOutType() == "Strange") {
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return false;
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}
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}
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return true;
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};
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Transaction.prototype.serialize = function serialize() {
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var bufs = [];
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var buf = new Buffer(4);
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buf.writeUInt32LE(this.version, 0);
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bufs.push(buf);
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bufs.push(util.varIntBuf(this.ins.length));
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this.ins.forEach(function(txin) {
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bufs.push(txin.serialize());
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});
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bufs.push(util.varIntBuf(this.outs.length));
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this.outs.forEach(function(txout) {
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bufs.push(txout.serialize());
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});
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var buf = new Buffer(4);
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buf.writeUInt32LE(this.lock_time, 0);
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bufs.push(buf);
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this._buffer = Buffer.concat(bufs);
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return this._buffer;
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};
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Transaction.prototype.getBuffer = function getBuffer() {
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if (this._buffer) return this._buffer;
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return this.serialize();
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};
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Transaction.prototype.calcHash = function calcHash() {
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this.hash = util.twoSha256(this.getBuffer());
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return this.hash;
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};
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Transaction.prototype.checkHash = function checkHash() {
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if (!this.hash || !this.hash.length) return false;
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return buffertools.compare(this.calcHash(), this.hash) === 0;
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};
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Transaction.prototype.getHash = function getHash() {
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if (!this.hash || !this.hash.length) {
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this.hash = this.calcHash();
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}
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return this.hash;
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};
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// convert encoded list of inputs to easy-to-use JS list-of-lists
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Transaction.prototype.inputs = function inputs() {
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var res = [];
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for (var i = 0; i < this.ins.length; i++) {
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var txin = this.ins[i];
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var outHash = txin.getOutpointHash();
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var outIndex = txin.getOutpointIndex();
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res.push([outHash, outIndex]);
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}
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return res;
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};
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Transaction.prototype.verifyInput = function verifyInput(n, scriptPubKey, opts, callback) {
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var scriptSig = this.ins[n].getScript();
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return ScriptInterpreter.verifyFull(
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scriptSig,
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scriptPubKey,
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this, n, 0,
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opts,
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callback);
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};
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/**
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* Returns an object containing all pubkey hashes affected by this transaction.
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*
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* The return object contains the base64-encoded pubKeyHash values as keys
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* and the original pubKeyHash buffers as values.
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*/
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Transaction.prototype.getAffectedKeys = function getAffectedKeys(txCache) {
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// TODO: Function won't consider results cached if there are no affected
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// accounts.
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if (!(this.affects && this.affects.length)) {
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this.affects = [];
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// Index any pubkeys affected by the outputs of this transaction
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for (var i = 0, l = this.outs.length; i < l; i++) {
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var txout = this.outs[i];
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var script = txout.getScript();
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var outPubKey = script.simpleOutPubKeyHash();
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if (outPubKey) {
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this.affects.push(outPubKey);
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}
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};
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// Index any pubkeys affected by the inputs of this transaction
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var txIndex = txCache.txIndex;
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for (var i = 0, l = this.ins.length; i < l; i++) {
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var txin = this.ins[i];
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if (txin.isCoinBase()) continue;
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// In the case of coinbase or IP transactions, the txin doesn't
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// actually contain the pubkey, so we look at the referenced txout
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// instead.
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var outHash = txin.getOutpointHash();
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var outIndex = txin.getOutpointIndex();
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var outHashBase64 = outHash.toString('base64');
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var fromTxOuts = txIndex[outHashBase64];
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if (!fromTxOuts) {
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throw new Error("Input not found!");
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}
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var txout = fromTxOuts[outIndex];
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var script = txout.getScript();
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var outPubKey = script.simpleOutPubKeyHash();
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if (outPubKey) {
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this.affects.push(outPubKey);
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}
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}
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}
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var affectedKeys = {};
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this.affects.forEach(function(pubKeyHash) {
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affectedKeys[pubKeyHash.toString('base64')] = pubKeyHash;
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});
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return affectedKeys;
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};
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var OP_CODESEPARATOR = 171;
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var SIGHASH_ALL = 1;
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var SIGHASH_NONE = 2;
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var SIGHASH_SINGLE = 3;
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var SIGHASH_ANYONECANPAY = 80;
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Transaction.SIGHASH_ALL = SIGHASH_ALL;
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Transaction.SIGHASH_NONE = SIGHASH_NONE;
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Transaction.SIGHASH_SINGLE = SIGHASH_SINGLE;
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Transaction.SIGHASH_ANYONECANPAY = SIGHASH_ANYONECANPAY;
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Transaction.prototype.hashForSignature =
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function hashForSignature(script, inIndex, hashType) {
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if (+inIndex !== inIndex ||
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inIndex < 0 || inIndex >= this.ins.length) {
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throw new Error("Input index '" + inIndex + "' invalid or out of bounds " +
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"(" + this.ins.length + " inputs)");
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}
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// In case concatenating two scripts ends up with two codeseparators,
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// or an extra one at the end, this prevents all those possible
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// incompatibilities.
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script.findAndDelete(OP_CODESEPARATOR);
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// Get mode portion of hashtype
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var hashTypeMode = hashType & 0x1f;
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// Generate modified transaction data for hash
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var bytes = (new Put());
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bytes.word32le(this.version);
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// Serialize inputs
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if (hashType & SIGHASH_ANYONECANPAY) {
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// Blank out all inputs except current one, not recommended for open
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// transactions.
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bytes.varint(1);
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bytes.put(this.ins[inIndex].o);
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bytes.varint(script.buffer.length);
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bytes.put(script.buffer);
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bytes.word32le(this.ins[inIndex].q);
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} else {
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bytes.varint(this.ins.length);
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for (var i = 0, l = this.ins.length; i < l; i++) {
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var txin = this.ins[i];
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bytes.put(this.ins[i].o);
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// Current input's script gets set to the script to be signed, all others
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// get blanked.
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if (inIndex === i) {
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bytes.varint(script.buffer.length);
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bytes.put(script.buffer);
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} else {
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bytes.varint(0);
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}
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if (hashTypeMode === SIGHASH_NONE && inIndex !== i) {
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bytes.word32le(0);
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} else {
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bytes.word32le(this.ins[i].q);
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}
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}
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}
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// Serialize outputs
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if (hashTypeMode === SIGHASH_NONE) {
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bytes.varint(0);
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} else {
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var outsLen;
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if (hashTypeMode === SIGHASH_SINGLE) {
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if (inIndex >= this.outs.length) {
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// bug present in bitcoind which must be also present in bitcore
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// see https://bitcointalk.org/index.php?topic=260595
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// Transaction.hashForSignature(): SIGHASH_SINGLE
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// no corresponding txout found - out of bounds
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var ret = new Buffer(1);
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ret.writeUInt8(1, 0);
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return ret; // return 1 bug
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}
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outsLen = inIndex + 1;
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} else {
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outsLen = this.outs.length;
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}
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// TODO: If hashTypeMode !== SIGHASH_SINGLE, we could memcpy this whole
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// section from the original transaction as is.
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bytes.varint(outsLen);
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for (var i = 0; i < outsLen; i++) {
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if (hashTypeMode === SIGHASH_SINGLE && i !== inIndex) {
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// Zero all outs except the one we want to keep
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bytes.put(util.INT64_MAX);
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bytes.varint(0);
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} else {
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bytes.put(this.outs[i].v);
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bytes.varint(this.outs[i].s.length);
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bytes.put(this.outs[i].s);
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}
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}
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}
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bytes.word32le(this.lock_time);
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var buffer = bytes.buffer();
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// Append hashType
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buffer = Buffer.concat([buffer, new Buffer([parseInt(hashType), 0, 0, 0])]);
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return util.twoSha256(buffer);
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};
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/**
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* Returns an object with the same field names as jgarzik's getblock patch.
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*/
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Transaction.prototype.getStandardizedObject = function getStandardizedObject() {
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var tx = {
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hash: util.formatHashFull(this.getHash()),
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version: this.version,
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lock_time: this.lock_time
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};
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var totalSize = 8; // version + lock_time
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totalSize += util.getVarIntSize(this.ins.length); // tx_in count
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var ins = this.ins.map(function(txin) {
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var txinObj = {
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prev_out: {
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hash: buffertools.reverse(new Buffer(txin.getOutpointHash())).toString('hex'),
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n: txin.getOutpointIndex()
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}
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};
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if (txin.isCoinBase()) {
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txinObj.coinbase = txin.s.toString('hex');
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} else {
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txinObj.scriptSig = new Script(txin.s).getStringContent(false, 0);
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}
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totalSize += 36 + util.getVarIntSize(txin.s.length) +
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txin.s.length + 4; // outpoint + script_len + script + sequence
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return txinObj;
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});
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totalSize += util.getVarIntSize(this.outs.length);
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var outs = this.outs.map(function(txout) {
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totalSize += util.getVarIntSize(txout.s.length) +
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txout.s.length + 8; // script_len + script + value
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return {
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value: util.formatValue(txout.v),
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scriptPubKey: new Script(txout.s).getStringContent(false, 0)
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};
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});
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tx.size = totalSize;
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tx["in"] = ins;
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tx["out"] = outs;
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return tx;
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};
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// Add some Mongoose compatibility functions to the plain object
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Transaction.prototype.toObject = function toObject() {
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return this;
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};
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Transaction.prototype.fromObj = function fromObj(obj) {
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var txobj = {};
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txobj.version = obj.version || 1;
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txobj.lock_time = obj.lock_time || 0;
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txobj.ins = [];
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txobj.outs = [];
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obj.inputs.forEach(function(inputobj) {
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var txin = new TransactionIn();
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txin.s = util.EMPTY_BUFFER;
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txin.q = 0xffffffff;
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var hash = new Buffer(inputobj.txid, 'hex');
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hash = buffertools.reverse(hash);
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var vout = parseInt(inputobj.vout);
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var voutBuf = new Buffer(4);
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voutBuf.writeUInt32LE(vout, 0);
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txin.o = Buffer.concat([hash, voutBuf]);
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txobj.ins.push(txin);
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});
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var keys = Object.keys(obj.outputs);
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keys.forEach(function(addrStr) {
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var addr = new Address(addrStr);
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var script = Script.createPubKeyHashOut(addr.payload());
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var valueNum = bignum(obj.outputs[addrStr]);
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var value = util.bigIntToValue(valueNum);
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var txout = new TransactionOut();
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txout.v = value;
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txout.s = script.getBuffer();
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txobj.outs.push(txout);
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});
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this.lock_time = txobj.lock_time;
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this.version = txobj.version;
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this.ins = txobj.ins;
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this.outs = txobj.outs;
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}
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Transaction.prototype.parse = function(parser) {
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if (Buffer.isBuffer(parser)) {
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this._buffer = parser;
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parser = new Parser(parser);
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}
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var i, sLen, startPos = parser.pos;
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this.version = parser.word32le();
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var txinCount = parser.varInt();
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this.ins = [];
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for (j = 0; j < txinCount; j++) {
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var txin = new TransactionIn();
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txin.o = parser.buffer(36); // outpoint
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sLen = parser.varInt(); // script_len
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txin.s = parser.buffer(sLen); // script
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txin.q = parser.word32le(); // sequence
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this.ins.push(txin);
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}
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var txoutCount = parser.varInt();
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this.outs = [];
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for (j = 0; j < txoutCount; j++) {
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var txout = new TransactionOut();
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txout.v = parser.buffer(8); // value
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sLen = parser.varInt(); // script_len
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txout.s = parser.buffer(sLen); // script
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this.outs.push(txout);
|
|
}
|
|
|
|
this.lock_time = parser.word32le();
|
|
this.calcHash();
|
|
};
|
|
|
|
|
|
|
|
|
|
Transaction.prototype.calcSize = function() {
|
|
var totalSize = 8; // version + lock_time
|
|
totalSize += util.getVarIntSize(this.ins.length); // tx_in count
|
|
this.ins.forEach(function(txin) {
|
|
totalSize += 36 + util.getVarIntSize(txin.s.length) +
|
|
txin.s.length + 4; // outpoint + script_len + script + sequence
|
|
});
|
|
|
|
totalSize += util.getVarIntSize(this.outs.length);
|
|
this.outs.forEach(function(txout) {
|
|
totalSize += util.getVarIntSize(txout.s.length) +
|
|
txout.s.length + 8; // script_len + script + value
|
|
});
|
|
this.size = totalSize;
|
|
return totalSize;
|
|
};
|
|
|
|
Transaction.prototype.getSize = function getHash() {
|
|
if (!this.size) {
|
|
this.size = this.calcSize();
|
|
}
|
|
return this.size;
|
|
};
|
|
|
|
|
|
Transaction.prototype.countInputMissingSignatures = function(index) {
|
|
var ret = 0;
|
|
var script = new Script(this.ins[index].s);
|
|
return script.countMissingSignatures();
|
|
};
|
|
|
|
|
|
Transaction.prototype.isInputComplete = function(index) {
|
|
return this.countInputMissingSignatures(index)===0;
|
|
};
|
|
|
|
Transaction.prototype.isComplete = function() {
|
|
var ret = true;
|
|
var l = this.ins.length;
|
|
|
|
for (var i = 0; i < l; i++) {
|
|
if (!this.isInputComplete(i)){
|
|
ret = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
};
|
|
|
|
|
|
module.exports = require('soop')(Transaction);
|