817 lines
24 KiB
JavaScript
817 lines
24 KiB
JavaScript
require('classtool');
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function spec(b) {
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var config = b.config || require('./config');
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var log = b.log || require('./util/log');
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var Address = b.Address || require('./Address').class();
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var Script = b.Script || require('./Script').class();
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var ScriptInterpreter = b.ScriptInterpreter || require('./ScriptInterpreter').class();
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var util = b.util || require('./util/util');
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var bignum = b.bignum || require('bignum');
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var Put = b.Put || require('bufferput');
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var Parser = b.Parser || require('./util/BinaryParser').class();
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var Step = b.Step || require('step');
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var buffertools = b.buffertools || require('buffertools');
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var error = b.error || require('./util/error');
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var VerificationError = error.VerificationError;
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var MissingSourceError = error.MissingSourceError;
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var COINBASE_OP = Buffer.concat([util.NULL_HASH, new Buffer('FFFFFFFF', 'hex')]);
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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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}
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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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return buffertools.compare(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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return Buffer.concat([this.o, slen, this.s, qbuf]);
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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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/**
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* Load and cache transaction inputs.
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*
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* This function will try to load the inputs for a transaction.
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*
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* @param {BlockChain} blockChain A reference to the BlockChain object.
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* @param {TransactionMap|null} txStore Additional transactions to consider.
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* @param {Boolean} wait Whether to keep trying until the dependencies are
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* met (or a timeout occurs.)
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* @param {Function} callback Function to call on completion.
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*/
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Transaction.prototype.cacheInputs =
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function cacheInputs(blockChain, txStore, wait, callback) {
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var self = this;
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var txCache = new TransactionInputsCache(this);
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txCache.buffer(blockChain, txStore, wait, callback);
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};
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Transaction.prototype.verify = function verify(txCache, blockChain, callback) {
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var self = this;
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var txIndex = txCache.txIndex;
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var outpoints = [];
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var valueIn = bignum(0);
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var valueOut = bignum(0);
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function getTxOut(txin, n) {
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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 MissingSourceError(
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"Source tx " + util.formatHash(outHash) +
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" for inputs " + n + " not found",
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// We store the hash of the missing tx in the error
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// so that the txStore can watch out for it.
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outHash.toString('base64')
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);
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}
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var txout = fromTxOuts[outIndex];
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if (!txout) {
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throw new Error("Source output index "+outIndex+
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" for input "+n+" out of bounds");
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}
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return txout;
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};
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Step(
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function verifyInputs() {
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var group = this.group();
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if (self.isCoinBase()) {
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throw new Error("Coinbase tx are invalid unless part of a block");
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}
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self.ins.forEach(function (txin, n) {
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var txout = getTxOut(txin, n);
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// TODO: Verify coinbase maturity
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valueIn = valueIn.add(util.valueToBigInt(txout.v));
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outpoints.push(txin.o);
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self.verifyInput(n, txout.getScript(), group());
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});
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},
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function verifyInputsResults(err, results) {
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if (err) throw err;
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for (var i = 0, l = results.length; i < l; i++) {
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if (!results[i]) {
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var txout = getTxOut(self.ins[i]);
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log.debug('Script evaluated to false');
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log.debug('|- scriptSig', ""+self.ins[i].getScript());
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log.debug('`- scriptPubKey', ""+txout.getScript());
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throw new VerificationError('Script for input '+i+' evaluated to false');
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}
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}
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this();
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},
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function queryConflicts(err) {
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if (err) throw err;
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// Make sure there are no other transactions spending the same outs
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blockChain.countConflictingTransactions(outpoints, this);
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},
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function checkConflicts(err, count) {
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if (err) throw err;
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self.outs.forEach(function (txout) {
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valueOut = valueOut.add(util.valueToBigInt(txout.v));
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});
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if (valueIn.cmp(valueOut) < 0) {
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var outValue = util.formatValue(valueOut);
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var inValue = util.formatValue(valueIn);
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throw new Error("Tx output value (BTC "+outValue+") "+
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"exceeds input value (BTC "+inValue+")");
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}
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var fees = valueIn.sub(valueOut);
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if (count) {
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// Spent output detected, retrieve transaction that spends it
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blockChain.getConflictingTransactions(outpoints, function (err, results) {
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if (results.length) {
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if (buffertools.compare(results[0].getHash(), self.getHash()) === 0) {
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log.warn("Detected tx re-add (recoverable db corruption): "
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+ util.formatHashAlt(results[0].getHash()));
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// TODO: Needs to return an error for the memory pool case?
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callback(null, fees);
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} else {
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callback(new Error("At least one referenced output has"
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+ " already been spent in tx "
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+ util.formatHashAlt(results[0].getHash())));
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}
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} else {
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callback(new Error("Outputs of this transaction are spent, but "+
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"the transaction(s) that spend them are not "+
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"available. This probably means you need to "+
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"reset your database."));
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}
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});
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return;
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}
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// Success
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this(null, fees);
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},
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callback
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);
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};
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Transaction.prototype.verifyInput = function verifyInput(n, scriptPubKey, callback) {
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return ScriptInterpreter.verify(this.ins[n].getScript(),
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scriptPubKey,
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this, n, 0,
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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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try {
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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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} catch (err) {
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// It's not our job to validate, so we just ignore any errors and issue
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// a very low level log message.
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log.debug("Unable to determine affected pubkeys: " +
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(err.stack ? err.stack : ""+err));
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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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try {
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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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} catch (err) {
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// It's not our job to validate, so we just ignore any errors and issue
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// a very low level log message.
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log.debug("Unable to determine affected pubkeys: " +
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(err.stack ? err.stack : ""+err));
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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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// Clone transaction
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var txTmp = new Transaction();
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this.ins.forEach(function (txin, i) {
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txTmp.ins.push(new TransactionIn(txin));
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});
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this.outs.forEach(function (txout) {
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txTmp.outs.push(new TransactionOut(txout));
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});
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txTmp.version = this.version;
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txTmp.lock_time = this.lock_time;
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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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// TODO: Untested
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if (inIndex >= txTmp.outs.length) {
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throw new Error("Transaction.hashForSignature(): SIGHASH_SINGLE " +
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"no corresponding txout found - out of bounds");
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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);
|
|
bytes.put(this.outs[i].s);
|
|
}
|
|
}
|
|
}
|
|
|
|
bytes.word32le(this.lock_time);
|
|
|
|
var buffer = bytes.buffer();
|
|
|
|
// Append hashType
|
|
buffer = Buffer.concat([buffer, new Buffer([parseInt(hashType), 0, 0, 0])]);
|
|
|
|
return util.twoSha256(buffer);
|
|
};
|
|
|
|
/**
|
|
* Returns an object with the same field names as jgarzik's getblock patch.
|
|
*/
|
|
Transaction.prototype.getStandardizedObject = function getStandardizedObject() {
|
|
var tx = {
|
|
hash: util.formatHashFull(this.getHash()),
|
|
version: this.version,
|
|
lock_time: this.lock_time
|
|
};
|
|
|
|
var totalSize = 8; // version + lock_time
|
|
totalSize += util.getVarIntSize(this.ins.length); // tx_in count
|
|
var ins = this.ins.map(function (txin) {
|
|
var txinObj = {
|
|
prev_out: {
|
|
hash: buffertools.reverse(new Buffer(txin.getOutpointHash())).toString('hex'),
|
|
n: txin.getOutpointIndex()
|
|
}
|
|
};
|
|
if (txin.isCoinBase()) {
|
|
txinObj.coinbase = txin.s.toString('hex');
|
|
} else {
|
|
txinObj.scriptSig = new Script(txin.s).getStringContent(false, 0);
|
|
}
|
|
totalSize += 36 + util.getVarIntSize(txin.s.length) +
|
|
txin.s.length + 4; // outpoint + script_len + script + sequence
|
|
return txinObj;
|
|
});
|
|
|
|
totalSize += util.getVarIntSize(this.outs.length);
|
|
var outs = this.outs.map(function (txout) {
|
|
totalSize += util.getVarIntSize(txout.s.length) +
|
|
txout.s.length + 8; // script_len + script + value
|
|
return {
|
|
value: util.formatValue(txout.v),
|
|
scriptPubKey: new Script(txout.s).getStringContent(false, 0)
|
|
};
|
|
});
|
|
|
|
tx.size = totalSize;
|
|
|
|
tx["in"] = ins;
|
|
tx["out"] = outs;
|
|
|
|
return tx;
|
|
};
|
|
|
|
// Add some Mongoose compatibility functions to the plain object
|
|
Transaction.prototype.toObject = function toObject() {
|
|
return this;
|
|
};
|
|
|
|
Transaction.prototype.fromObj = function fromObj(obj) {
|
|
var txobj = {};
|
|
txobj.version = obj.version || 1;
|
|
txobj.lock_time = obj.lock_time || 0;
|
|
txobj.ins = [];
|
|
txobj.outs = [];
|
|
|
|
obj.inputs.forEach(function(inputobj) {
|
|
var txin = new TransactionIn();
|
|
txin.s = util.EMPTY_BUFFER;
|
|
txin.q = 0xffffffff;
|
|
|
|
var hash = new Buffer(inputobj.txid, 'hex');
|
|
hash = buffertools.reverse(hash);
|
|
var vout = parseInt(inputobj.vout);
|
|
var voutBuf = new Buffer(4);
|
|
voutBuf.writeUInt32LE(vout, 0);
|
|
|
|
txin.o = Buffer.concat([hash, voutBuf]);
|
|
|
|
txobj.ins.push(txin);
|
|
});
|
|
|
|
var keys = Object.keys(obj.outputs);
|
|
keys.forEach(function(addrStr) {
|
|
var addr = new Address(addrStr);
|
|
var script = Script.createPubKeyHashOut(addr.payload());
|
|
|
|
var valueNum = bignum(obj.outputs[addrStr]);
|
|
var value = util.bigIntToValue(valueNum);
|
|
|
|
var txout = new TransactionOut();
|
|
txout.v = value;
|
|
txout.s = script.getBuffer();
|
|
|
|
txobj.outs.push(txout);
|
|
});
|
|
|
|
this.lock_time = txobj.lock_time;
|
|
this.version = txobj.version;
|
|
this.ins = txobj.ins;
|
|
this.outs = txobj.outs;
|
|
}
|
|
|
|
Transaction.prototype.parse = function (parser) {
|
|
if (Buffer.isBuffer(parser)) {
|
|
parser = new Parser(parser);
|
|
}
|
|
|
|
var i, sLen, startPos = parser.pos;
|
|
|
|
this.version = parser.word32le();
|
|
|
|
var txinCount = parser.varInt();
|
|
|
|
this.ins = [];
|
|
for (j = 0; j < txinCount; j++) {
|
|
var txin = new TransactionIn();
|
|
txin.o = parser.buffer(36); // outpoint
|
|
sLen = parser.varInt(); // script_len
|
|
txin.s = parser.buffer(sLen); // script
|
|
txin.q = parser.word32le(); // sequence
|
|
this.ins.push(txin);
|
|
}
|
|
|
|
var txoutCount = parser.varInt();
|
|
|
|
this.outs = [];
|
|
for (j = 0; j < txoutCount; j++) {
|
|
var txout = new TransactionOut();
|
|
txout.v = parser.buffer(8); // value
|
|
sLen = parser.varInt(); // script_len
|
|
txout.s = parser.buffer(sLen); // script
|
|
this.outs.push(txout);
|
|
}
|
|
|
|
this.lock_time = parser.word32le();
|
|
this.calcHash();
|
|
};
|
|
|
|
var TransactionInputsCache = exports.TransactionInputsCache =
|
|
function TransactionInputsCache(tx)
|
|
{
|
|
var txList = [];
|
|
var txList64 = [];
|
|
var reqOuts = {};
|
|
|
|
// Get list of transactions required for verification
|
|
tx.ins.forEach(function (txin) {
|
|
if (txin.isCoinBase()) return;
|
|
|
|
var hash = txin.o.slice(0, 32);
|
|
var hash64 = hash.toString('base64');
|
|
if (txList64.indexOf(hash64) == -1) {
|
|
txList.push(hash);
|
|
txList64.push(hash64);
|
|
}
|
|
if (!reqOuts[hash64]) {
|
|
reqOuts[hash64] = [];
|
|
}
|
|
reqOuts[hash64][txin.getOutpointIndex()] = true;
|
|
});
|
|
|
|
this.tx = tx;
|
|
this.txList = txList;
|
|
this.txList64 = txList64;
|
|
this.txIndex = {};
|
|
this.requiredOuts = reqOuts;
|
|
this.callbacks = [];
|
|
};
|
|
|
|
TransactionInputsCache.prototype.buffer = function buffer(blockChain, txStore, wait, callback)
|
|
{
|
|
var self = this;
|
|
|
|
var complete = false;
|
|
|
|
if ("function" === typeof callback) {
|
|
self.callbacks.push(callback);
|
|
}
|
|
|
|
var missingTx = {};
|
|
self.txList64.forEach(function (hash64) {
|
|
missingTx[hash64] = true;
|
|
});
|
|
|
|
// A utility function to create the index object from the txs result lists
|
|
function indexTxs(err, txs) {
|
|
if (err) throw err;
|
|
|
|
// Index memory transactions
|
|
txs.forEach(function (tx) {
|
|
var hash64 = tx.getHash().toString('base64');
|
|
var obj = {};
|
|
Object.keys(self.requiredOuts[hash64]).forEach(function (o) {
|
|
obj[+o] = tx.outs[+o];
|
|
});
|
|
self.txIndex[hash64] = obj;
|
|
delete missingTx[hash64];
|
|
});
|
|
|
|
this(null);
|
|
};
|
|
|
|
Step(
|
|
// First find and index memory transactions (if a txStore was provided)
|
|
function findMemTx() {
|
|
if (txStore) {
|
|
txStore.find(self.txList64, this);
|
|
} else {
|
|
this(null, []);
|
|
}
|
|
},
|
|
indexTxs,
|
|
// Second find and index persistent transactions
|
|
function findBlockChainTx(err) {
|
|
if (err) throw err;
|
|
|
|
// TODO: Major speedup should be possible if we load only the outs and not
|
|
// whole transactions.
|
|
var callback = this;
|
|
blockChain.getOutputsByHashes(self.txList, function (err, result) {
|
|
callback(err, result);
|
|
});
|
|
},
|
|
indexTxs,
|
|
function saveTxCache(err) {
|
|
if (err) throw err;
|
|
|
|
var missingTxDbg = '';
|
|
if (Object.keys(missingTx).length) {
|
|
missingTxDbg = Object.keys(missingTx).map(function (hash64) {
|
|
return util.formatHash(new Buffer(hash64, 'base64'));
|
|
}).join(',');
|
|
}
|
|
|
|
if (wait && Object.keys(missingTx).length) {
|
|
// TODO: This might no longer be needed now that saveTransactions uses
|
|
// the safe=true option.
|
|
setTimeout(function () {
|
|
var missingHashes = Object.keys(missingTx);
|
|
if (missingHashes.length) {
|
|
self.callback(new Error('Missing inputs (timeout while searching): '
|
|
+ missingTxDbg));
|
|
} else if (!complete) {
|
|
self.callback(new Error('Callback failed to trigger'));
|
|
}
|
|
}, 10000);
|
|
} else {
|
|
complete = true;
|
|
this(null, self);
|
|
}
|
|
},
|
|
self.callback.bind(self)
|
|
);
|
|
};
|
|
|
|
|
|
TransactionInputsCache.prototype.callback = function callback(err)
|
|
{
|
|
var args = Array.prototype.slice.apply(arguments);
|
|
|
|
// Empty the callback array first (because downstream functions could add new
|
|
// callbacks or otherwise interfere if were not in a consistent state.)
|
|
var cbs = this.callbacks;
|
|
this.callbacks = [];
|
|
|
|
try {
|
|
cbs.forEach(function (cb) {
|
|
cb.apply(null, args);
|
|
});
|
|
} catch (err) {
|
|
log.err("Callback error after connecting tx inputs: "+
|
|
(err.stack ? err.stack : err.toString()));
|
|
}
|
|
};
|
|
|
|
return Transaction;
|
|
};
|
|
module.defineClass(spec);
|