362 lines
9.0 KiB
JavaScript
362 lines
9.0 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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BitcoreBlock = require('bitcore/Block').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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sockets = require('../controllers/socket.js'),
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TransactionItem = require('./TransactionItem');
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var CONCURRENCY = 5;
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// TODO: use bitcore networks module
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var genesisTXID = '4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b';
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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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/* TODO?
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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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time: Number,
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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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var That = this;
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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) {
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// No in mongo...but maybe in bitcoind... lets query it
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tx = new That();
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tx.txid = txid;
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tx.fillInfo(function(err, txInfo) {
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if (err) return cb(err);
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if (!txInfo) return cb();
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tx.save(function(err) {
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return cb(err,tx);
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});
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});
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}
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else {
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tx.fillInfo(function(err) {
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return cb(err,tx);
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});
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}
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});
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};
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TransactionSchema.statics.createFromArray = function(txs, time, next) {
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var that = this;
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if (!txs) return next();
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var mongo_txs = [];
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async.forEachLimit(txs, CONCURRENCY, function(txid, cb) {
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that.explodeTransactionItems( txid, time, function(err, addrs) {
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if (err) return next(err);
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if (addrs) {
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async.each(addrs, function(addr){
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sockets.broadcast_address_tx(addr, {'txid': txid});
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});
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}
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that.create({txid: txid, time: time}, function(err, new_tx) {
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if (err && ! err.toString().match(/E11000/)) return cb(err);
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if (new_tx) {
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mongo_txs.push(new_tx);
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}
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return cb();
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});
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});
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},
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function(err) {
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return next(err, mongo_txs);
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});
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};
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TransactionSchema.statics.explodeTransactionItems = function(txid, time, cb) {
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var addrs = [];
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// Is it from genesis block? (testnet==livenet)
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// TODO: parse it from networks.genesisTX
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if (txid === genesisTXID) return cb();
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this.queryInfo(txid, function(err, info) {
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if (err || !info) return cb(err);
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var index = 0;
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info.vin.forEach( function(i){
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i.n = index++;
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});
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async.forEachLimit(info.vin, CONCURRENCY, function(i, next_in) {
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if (i.addr && i.value) {
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TransactionItem.create({
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txid : txid,
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value_sat : -1 * i.valueSat,
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addr : i.addr,
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index : i.n,
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ts : time,
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}, next_in);
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if (addrs.indexOf(i.addr) === -1) {
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addrs.push(i.addr);
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}
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}
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else {
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if ( !i.coinbase ) {
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console.log ('WARN in TX: %s: could not parse INPUT %d', txid, i.n);
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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 && !err.message.match(/E11000/) ) console.log (err);
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async.forEachLimit(info.vout, CONCURRENCY, 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 && o.scriptPubKey.addresses && o.scriptPubKey.addresses[0]) {
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TransactionItem.create({
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txid : txid,
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value_sat : o.valueSat,
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addr : o.scriptPubKey.addresses[0], // TODO: only address 0?
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index : o.n,
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ts : time,
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}, next_out);
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if (addrs.indexOf(o.scriptPubKey.addresses[0]) === -1) {
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addrs.push(o.scriptPubKey.addresses[0]);
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}
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}
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else {
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console.log ('WARN in TX: %s could not parse OUTPUT %d', 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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if (err && ! err.toString().match(/E11000/)) return cb(err);
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return cb(null, addrs);
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});
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});
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});
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};
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TransactionSchema.statics.getOutpoints = function (tx, next) {
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if (tx.isCoinBase()) return next();
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var rpc = new RpcClient(config.bitcoind);
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var network = ( config.network === 'testnet') ? networks.testnet : networks.livenet ;
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async.forEachLimit(tx.ins, CONCURRENCY, 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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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 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.statics.queryInfo = function(txid, cb) {
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var that = this;
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var network = ( config.network === 'testnet') ? networks.testnet : networks.livenet ;
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var rpc = new RpcClient(config.bitcoind);
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rpc.getRawTransaction(txid, 1, function(err, txInfo) {
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// Not found?
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if (err && err.code === -5) return cb();
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if (err) return cb(err);
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var 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.getOutpoints(tx, function(err) {
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if (err) return cb(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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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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info.vin[c].value = parseFloat(util.formatValue(i.value));
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var n = util.valueToBigInt(i.value).toNumber();
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info.vin[c].valueSat = n;
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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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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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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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c=0;
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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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info.vout[c].valueSat = n;
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c++;
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});
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info.valueOut = valueOut / util.COIN;
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if ( !tx.isCoinBase() ) {
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info.valueIn = valueIn / util.COIN;
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info.feeds = (valueIn - valueOut) / util.COIN;
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}
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else {
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var reward = BitcoreBlock.getBlockValue(info.height) / util.COIN;
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info.vin[0].reward = reward;
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info.valueIn = reward;
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}
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info.size = b.length;
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return cb(null, info);
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});
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});
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};
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TransactionSchema.methods.fillInfo = function(next) {
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var that = this;
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mongoose.model('Transaction', TransactionSchema).queryInfo(that.txid, function(err, info) {
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if (err) return next(err);
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that.info = info;
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if (! that.info) {
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return next();
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}
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else {
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that.info.time = that.time;
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return next();
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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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