290 lines
7.1 KiB
JavaScript
290 lines
7.1 KiB
JavaScript
'use strict';
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/**
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* Module dependencies.
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*/
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var mongoose = require('mongoose'),
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Schema = mongoose.Schema,
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async = require('async'),
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RpcClient = require('bitcore/RpcClient').class(),
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Transaction = require('bitcore/Transaction').class(),
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Address = require('bitcore/Address').class(),
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networks = require('bitcore/networks'),
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util = require('bitcore/util/util'),
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bignum = require('bignum'),
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config = require('../../config/config'),
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TransactionItem = require('./TransactionItem');
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/**
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*/
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var TransactionSchema = new Schema({
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// For now we keep this as short as possible
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// More fields will be propably added as we move
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// forward with the UX
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txid: {
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type: String,
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index: true,
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unique: true,
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},
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processed: {
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type: Boolean,
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default: false,
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index: true,
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},
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orphaned: {
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type: Boolean,
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default: false,
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},
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});
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/**
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* Statics
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*/
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TransactionSchema.statics.load = function(id, cb) {
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this.findOne({
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_id: id
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}).exec(cb);
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};
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TransactionSchema.statics.fromId = function(txid, cb) {
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this.findOne({
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txid: txid,
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}).exec(cb);
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};
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TransactionSchema.statics.fromIdWithInfo = function(txid, cb) {
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// TODO Should we go to mongoDB first? Now, no extra information is stored at mongo.
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this.fromId(txid, function(err, tx) {
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if (err) return cb(err);
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if (!tx) { return cb(new Error('TX not found')); }
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tx.queryInfo(function(err) { return cb(err,tx); } );
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});
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};
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TransactionSchema.statics.createFromArray = function(txs, next) {
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var that = this;
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if (!txs) return next();
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async.forEach( txs,
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function(tx, callback) {
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that.create({ txid: tx }, function(err) {
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if (err && ! err.toString().match(/E11000/)) {
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return callback(err);
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}
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return callback();
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});
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},
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function(err) {
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return next(err);
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}
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);
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};
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TransactionSchema.statics.explodeTransactionItems = function(txid, cb) {
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this.fromIdWithInfo(txid, function(err, t) {
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if (err || !t) return cb(err);
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var index=0;
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async.each(t.info.vin, function(i, next_in) {
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/*
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* TODO Support multisigs???
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*/
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if (i.addr && i.value) {
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TransactionItem.create({
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txid : t.txid,
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value : -1 * i.value,
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addr : i.addr,
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index : index++,
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}, next_in);
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}
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else {
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if ( !i.coinbase ) {
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console.log ("TX: %s seems to be multisig IN. Skipping... ", t.txid);
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}
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return next_in();
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}
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},
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function (err) {
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if (err) console.log (err);
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async.each(t.info.vout, function(o, next_out) {
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/*
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* TODO Support multisigs
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*/
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if (o.value && o.scriptPubKey
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&& o.scriptPubKey.addresses
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&& o.scriptPubKey.addresses[0]
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) {
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TransactionItem.create({
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txid : t.txid,
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value : o.value,
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addr : o.scriptPubKey.addresses[0],
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index : o.n,
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}, next_out);
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}
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else {
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console.log ("TX: %s,%d seems to be multisig OUT. Skipping... ", t.txid, o.n);
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return next_out();
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}
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},
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function (err) {
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return cb(err);
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});
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});
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});
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};
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TransactionSchema.methods.fillInputValues = function (tx, next) {
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if (tx.isCoinBase()) return next();
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if (! this.rpc) this.rpc = new RpcClient(config.bitcoind);
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var network = ( config.network === 'testnet') ? networks.testnet : networks.livenet ;
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var that = this;
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async.each(tx.ins, function(i, cb) {
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var outHash = i.getOutpointHash();
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var outIndex = i.getOutpointIndex();
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var outHashBase64 = outHash.reverse().toString('hex');
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var c=0;
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that.rpc.getRawTransaction(outHashBase64, function(err, txdata) {
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var txin = new Transaction();
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if (err || ! txdata.result) return cb( new Error('Input TX '+outHashBase64+' not found'));
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var b = new Buffer(txdata.result,'hex');
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txin.parse(b);
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/*
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*We have to parse it anyways. It will have outputs even it is a coinbase tx
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if ( txin.isCoinBase() ) {
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return cb();
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}
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*/
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txin.outs.forEach( function(j) {
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// console.log( c + ': ' + util.formatValue(j.v) );
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if (c === outIndex) {
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i.value = j.v;
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// This is used for pay-to-pubkey transaction in which
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// the pubkey is not provided on the input
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var scriptPubKey = j.getScript();
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var txType = scriptPubKey.classify();
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var hash = scriptPubKey.simpleOutHash();
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if (hash) {
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var addr = new Address(network.addressPubkey, hash);
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i.addrFromOutput = addr.toString();
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}
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}
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c++;
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});
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return cb();
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});
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},
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function(err) {
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return next(err);
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}
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);
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};
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TransactionSchema.methods.queryInfo = function (next) {
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var that = this;
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var network = ( config.network === 'testnet') ? networks.testnet : networks.livenet ;
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this.rpc = new RpcClient(config.bitcoind);
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this.rpc.getRawTransaction(this.txid, 1, function(err, txInfo) {
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if (err) return next(err);
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that.info = txInfo.result;
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// Transaction parsing
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var b = new Buffer(txInfo.result.hex,'hex');
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var tx = new Transaction();
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tx.parse(b);
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that.fillInputValues(tx, function(err) {
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// Copy TX relevant values to .info
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var c = 0;
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var valueIn = bignum(0);
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var valueOut = bignum(0);
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if ( tx.isCoinBase() ) {
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that.info.isCoinBase = true;
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}
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else {
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tx.ins.forEach(function(i) {
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if (i.value) {
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that.info.vin[c].value = util.formatValue(i.value);
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var n = util.valueToBigInt(i.value).toNumber();
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valueIn = valueIn.add( n );
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var scriptSig = i.getScript();
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var pubKey = scriptSig.simpleInPubKey();
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// We check for pubKey in case a broken / strange TX.
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if (pubKey) {
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var pubKeyHash = util.sha256ripe160(pubKey);
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var addr = new Address(network.addressPubkey, pubKeyHash);
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var addrStr = addr.toString();
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that.info.vin[c].addr = addrStr;
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}
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else {
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if (i.addrFromOutput)
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that.info.vin[c].addr = i.addrFromOutput;
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}
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}
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else {
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console.log("TX could not be parsed: %s,%d",txInfo.result.txid, c);
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}
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c++;
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});
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}
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tx.outs.forEach( function(i) {
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var n = util.valueToBigInt(i.v).toNumber();
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valueOut = valueOut.add(n);
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});
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that.info.valueOut = valueOut / util.COIN;
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if ( !tx.isCoinBase() ) {
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that.info.valueIn = valueIn / util.COIN;
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that.info.feeds = (valueIn - valueOut) / util.COIN;
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}
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that.info.size = b.length;
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return next(err, that.info);
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});
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});
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};
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module.exports = mongoose.model('Transaction', TransactionSchema);
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