672 lines
15 KiB
JavaScript
672 lines
15 KiB
JavaScript
/**
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* bitcoind.js
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* Copyright (c) 2014, BitPay (MIT License)
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* A bitcoind node.js binding.
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*/
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var net = require('net');
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var EventEmitter = require('events').EventEmitter;
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var bitcoindjs = require('../build/Release/bitcoindjs.node');
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var util = require('util');
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var net = require('net');
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var bn = require('bn.js');
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/**
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* Bitcoin
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*/
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var bitcoin = Bitcoin;
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function Bitcoin(options) {
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var self = this;
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if (Bitcoin.global) {
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throw new Error('bitcoindjs cannot be instantiated more than once.');
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}
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if (!(this instanceof Bitcoin)) {
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return new Bitcoin(options);
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}
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EventEmitter.call(this);
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this.options = options;
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Bitcoin.global = this;
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this.on('newListener', function(name) {
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if (name === 'open') {
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self.start();
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}
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});
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}
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Bitcoin.prototype.__proto__ = EventEmitter.prototype;
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Bitcoin.prototype.start = function(callback) {
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var self = this;
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if (this._started) return;
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this._started = true;
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var none = {};
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var isSignal = {};
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var sigint = { name: 'SIGINT', signal: isSignal };
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var sighup = { name: 'SIGHUP', signal: isSignal };
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var sigquit = { name: 'SIGQUIT', signal: isSignal };
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var exitCaught = none;
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var errorCaught = none;
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this.log_pipe = bitcoindjs.start(function(err, status) {
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[sigint, sighup, sigquit].forEach(function(signal) {
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process.on(signal.name, signal.listener = function() {
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if (process.listeners(signal.name).length > 1) {
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return;
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}
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if (!self._shutdown) {
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process.exit(0);
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} else {
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self.stop();
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exitCaught = signal;
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}
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});
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});
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var exit = process.exit;
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self._exit = function() {
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return exit.apply(process, arguments);
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};
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process.exit = function(code) {
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exitCaught = code || 0;
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if (!self._shutdown) {
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return self._exit(code);
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}
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self.stop();
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};
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process.on('uncaughtException', function(err) {
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if (process.listeners('uncaughtException').length > 1) {
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return;
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}
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errorCaught = err;
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self.error('Uncaught error: shutting down safely before throwing...');
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if (!self._shutdown) {
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if (err && err.stack) {
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console.error(err.stack);
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}
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self._exit(1);
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return;
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}
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self.stop();
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});
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if (callback) {
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callback(err);
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callback = null;
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}
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if (err) {
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self.emit('error', err);
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} else {
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self.emit('open', status);
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}
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});
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// bitcoind's boost threads aren't in the thread pool
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// or on node's event loop, so we need to keep node open.
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this._shutdown = setInterval(function() {
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if (!self._stoppingSaid && bitcoindjs.stopping()) {
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self._stoppingSaid = true;
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self.log('shutting down...');
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}
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if (bitcoindjs.stopped()) {
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self.log('shut down.');
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clearInterval(self._shutdown);
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delete self._shutdown;
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if (exitCaught !== none) {
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if (exitCaught.signal === isSignal) {
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process.removeListener(exitCaught.name, exitCaught.listener);
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setImmediate(function() {
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process.kill(process.pid, exitCaught.name);
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});
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return;
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}
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return self._exit(exitCaught);
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}
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if (errorCaught !== none) {
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if (errorCaught && errorCaught.stack) {
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console.error(errorCaught.stack);
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}
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return self._exit(0);
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}
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}
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}, 1000);
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this.pollInterval = 300;
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this._emitted = {};
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this.on('newListener', function(name) {
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if (name === 'block') {
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self._pollBlocks();
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return;
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}
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if (name === 'tx') {
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self._pollBlocks();
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self._pollMempool();
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return;
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}
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if (name === 'mptx') {
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self._pollMempool();
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return;
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}
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});
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if (this.log_pipe !== -1) {
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this.log('log pipe opened: %d', this.log_pipe);
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this._pipe = new net.Socket(this.log_pipe);
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this._pipe.on('data', function(data) {
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return process.stdout.write('bitcoind: ' + data + '\n');
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});
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this._pipe.on('error', function(err) {
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; // ignore for now
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});
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this._pipe.resume();
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}
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};
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Bitcoin.prototype._pollBlocks = function() {
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var self = this;
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if (this._pollingBlocks) return;
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this._pollingBlocks = true;
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(function next() {
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return bitcoindjs.pollBlocks(function(err, blocks) {
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if (err) return setTimeout(next, self.pollInterval);
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return utils.forEach(blocks, function(block, nextBlock) {
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block = bitcoin.block(block);
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// XXX Bad workaround
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if (self._emitted[block.hash]) {
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return setImmediate(function() {
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return nextBlock();
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});
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}
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self._emitted[block.hash] = true;
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self.emit('block', block);
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return utils.forEach(block.tx, function(tx, nextTx) {
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tx = bitcoin.tx(tx);
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self.emit('tx', tx);
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return setImmediate(function() {
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return nextTx();
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});
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}, function() {
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return setImmediate(function() {
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return nextBlock();
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});
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});
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}, function() {
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return setTimeout(next, self.pollInterval);
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});
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});
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})();
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};
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Bitcoin.prototype._pollMempool = function() {
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var self = this;
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if (this._pollingMempool) return;
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this._pollingMempool = true;
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(function next() {
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return bitcoindjs.pollMempool(function(err, txs) {
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if (err) return setTimeout(next, self.pollInterval);
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return utils.forEach(txs, function(tx, nextTx) {
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tx = bitcoin.tx(tx);
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// XXX Bad workaround
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if (self._emitted[tx.hash]) {
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return setImmediate(function() {
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return nextTx();
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});
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}
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self._emitted[tx.hash] = true;
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self.emit('mptx', tx);
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self.emit('tx', tx);
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return setImmediate(function() {
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return nextTx();
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});
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}, function() {
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return setTimeout(next, self.pollInterval);
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});
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});
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})();
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};
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Bitcoin.prototype.getBlock = function(blockHash, callback) {
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return bitcoindjs.getBlock(blockHash, function(err, block) {
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if (err) return callback(err);
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return callback(null, bitcoind.block(block));
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});
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};
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Bitcoin.prototype.getTx = function(txHash, blockHash, callback) {
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if (!callback) {
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callback = blockHash;
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blockHash = '';
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}
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return bitcoindjs.getTx(txHash, blockHash, function(err, tx) {
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if (err) return callback(err);
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return callback(null, bitcoind.tx(tx));
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});
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};
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Bitcoin.prototype.log =
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Bitcoin.prototype.info = function() {
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if (typeof arguments[0] !== 'string') {
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var out = util.inspect(arguments[0], null, 20, true);
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return process.stdout.write('bitcoind.js: ' + out + '\n');
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}
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var out = util.format.apply(util, arguments);
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return process.stdout.write('bitcoind.js: ' + out + '\n');
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};
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Bitcoin.prototype.error = function() {
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if (typeof arguments[0] !== 'string') {
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var out = util.inspect(arguments[0], null, 20, true);
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return process.stderr.write('bitcoind.js: ' + out + '\n');
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}
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var out = util.format.apply(util, arguments);
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return process.stderr.write('bitcoind.js: ' + out + '\n');
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};
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Bitcoin.prototype.stop =
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Bitcoin.prototype.close = function(callback) {
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var self = this;
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return bitcoindjs.stop(function(err, status) {
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if (err) {
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self.error(err.message);
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} else {
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self.log(status);
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}
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if (!callback) return;
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return callback(err, status);
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});
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};
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/**
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* Block
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*/
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function Block(data) {
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if (!(this instanceof Block)) {
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return new Block(data);
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}
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if (data instanceof Block) {
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return data;
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}
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var self = this;
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Object.keys(data).forEach(function(key) {
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if (!self[key]) {
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self[key] = data[key];
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}
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});
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}
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/**
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* Transaction
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*/
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function Transaction(data) {
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if (!(this instanceof Transaction)) {
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return new Transaction(data);
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}
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if (data instanceof Transaction) {
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return data;
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}
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var self = this;
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this.nMinTxFee = data.nMinTxFee || data.minTxFee || 1000;
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this.nMinRelayTxFee = data.nMinRelayTxFee || data.minRelayTxFee || 1000;
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this.CURRENT_VERSION = 1;
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this.nVersion = data.nVersion || data.version || this.CURRENT_VERSION;
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this.vin = data.vin || [];
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this.vout = data.vout || [];
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this.nLockTime = data.nLockTime || data.locktime || 0;
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Object.keys(data).forEach(function(key) {
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if (!self[key]) {
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self[key] = data[key];
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}
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});
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if (this.isCoinbase()) {
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this.vin[0].txid = Array(64 + 1).join('0');
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this.vin[0].vout = 0;
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this.vin[0].scriptSig = {
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asm: null,
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hex: this.vin[0].coinbase
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};
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}
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this.toHex();
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}
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Transaction.prototype.getSerializeSize = function() {
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;
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};
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Transaction.prototype.serialize = function() {
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;
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};
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Transaction.prototype.unserialize = function() {
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;
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};
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Transaction.prototype.setNull = function() {
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;
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};
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Transaction.prototype.isNull = function() {
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;
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};
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Transaction.prototype.getHash = function() {
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;
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};
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Transaction.prototype.getValueOut = function() {
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;
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};
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Transaction.prototype.computePriority = function() {
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;
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};
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Transaction.prototype.isCoinbase = function() {
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return this.vin.length === 1 && this.vin[0].coinbase;
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};
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Transaction.prototype.equal = function() {
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;
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};
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Transaction.prototype.notEqual = function() {
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;
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};
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Transaction.prototype.toString = function() {
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;
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};
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Transaction.prototype.print = function() {
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;
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};
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Transaction.prototype.toHex = function() {
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return this.hex = this.hex || Transaction.toHex(this);
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};
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Transaction.toHex = function(tx) {
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return new bn(Transaction.toBinary(tx)).toString('hex');
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};
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Transaction.toBinary = function(tx) {
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var p = [];
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var off = utils.writeU32(p, tx.nVersion || tx.version, 0);
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off += utils.varint(p, tx.vin.length, off);
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for (var i = 0; i < tx.vin.length; i++) {
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var input = tx.vin[i];
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if (input.coinbase) {
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off += utils.copy(new bn(Array(64 + 1).join('0'), 'hex').toArray(), p, off, true);
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off += utils.writeU32(p, 0, off);
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var s = script.encode(new bn(input.coinbase, 'hex').toArray());
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off += utils.varint(p, s.length, off);
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off += utils.copy(s, p, off, true);
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off += utils.writeU32(p, input.sequence, off);
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} else {
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off += utils.copy(new bn(input.txid, 'hex').toArray(), p, off, true);
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off += utils.writeU32(p, input.vout, off);
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var s = script.encode(new bn(input.scriptSig.hex, 'hex').toArray());
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off += utils.varint(p, s.length, off);
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off += utils.copy(s, p, off, true);
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off += utils.writeU32(p, input.sequence, off);
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}
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}
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off += utils.varint(p, tx.vout.length, off);
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for (var i = 0; i < tx.vout.length; i++) {
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var output = tx.vout[i];
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// Put LE value
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var value = new bn(output.value).toArray().slice().reverse();
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assert(value.length <= 8);
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off += utils.copy(value, p, off, true);
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for (var j = value.length; j < 8; j++, off++) {
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p[off] = 0;
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}
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var s = script.encode(new bn(output.scriptPubKey.hex, 'hex').toArray());
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off += utils.varint(p, s.length, off);
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off += utils.copy(s, p, off, true);
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}
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off += utils.writeU32(p, tx.nLockTime || tx.locktime, off);
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return p;
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};
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Transaction.prototype.toBinary = function() {
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return Transaction.toBinary(this);
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};
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Transaction.broadcast = function(tx, options, callback) {
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if (typeof tx === 'string') {
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tx = { hex: tx };
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}
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if (!callback) {
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callback = options;
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options = null;
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}
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if (!options) {
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options = {};
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}
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var fee = options.overrideFees = options.overrideFees || false;
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var own = options.ownOnly = options.ownOnly || false;
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if (!callback) {
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callback = utils.NOOP;
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}
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if (!tx.hex) {
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tx = bitcoin.tx(tx);
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tx.toHex();
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}
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return bitcoindjs.broadcastTx(tx, fee, own, function(err, hash, tx) {
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if (err) {
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if (callback === utils.NOOP) {
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bitcoin.global.emit('error', err);
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}
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return callback(err);
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}
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tx = bitcoin.tx(tx);
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bitcoin.global.emit('broadcast', tx);
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return callback(null, hash, tx);
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});
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};
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Transaction.prototype.broadcast = function(options, callback) {
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if (!callback) {
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callback = options;
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options = null;
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}
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return Transaction.broadcast(this, options, callback);
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};
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/**
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* Script
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*/
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var script = {};
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script.encode = function encode(s) {
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if (!s) {
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return [];
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}
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var res = [];
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for (var i = 0; i < s.length; i++) {
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var instr = s[i];
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// Push value to stack
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if (Array.isArray(instr)) {
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if (instr.length === 0) {
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res.push(0);
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} else if (instr.length === 1 && 0 < instr[0] && instr[0] <= 16) {
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res.push(0x50 + instr[0]);
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} else if (1 <= instr.length && instr.length <= 0x4b) {
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res = res.concat(instr.length, instr);
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} else if (instr.length <= 0xff) {
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res = res.concat(0x4c, instr.length, instr);
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} else if (instr.length <= 0xffff) {
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res.push(0x4d);
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utils.writeU16(res, instr.length, res.length);
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res = res.concat(instr);
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} else {
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res.push(0x4e);
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utils.writeU32(res, instr.length, res.length);
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res = res.concat(instr);
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}
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continue;
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}
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res.push(instr);
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}
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return res;
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};
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/**
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* Utils
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*/
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var utils = {};
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utils.revHex = function revHex(s) {
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var r = '';
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for (var i = 0; i < s.length; i += 2) {
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r = s.slice(i, i + 2) + r;
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}
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return r;
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};
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utils.forEach = function(obj, iter, done) {
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var pending = obj.length;
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if (!pending) return done();
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var next = function() {
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if (!--pending) done();
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};
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obj.forEach(function(item) {
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iter(item, next);
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});
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|
};
|
|
|
|
utils.writeU16 = function writeU16(dst, num, off) {
|
|
if (!off)
|
|
off = 0;
|
|
dst[off] = num & 0xff;
|
|
dst[off + 1] = (num >>> 8) & 0xff;
|
|
return 2;
|
|
};
|
|
|
|
utils.writeU32 = function writeU32(dst, num, off) {
|
|
if (!off)
|
|
off = 0;
|
|
dst[off] = num & 0xff;
|
|
dst[off + 1] = (num >>> 8) & 0xff;
|
|
dst[off + 2] = (num >>> 16) & 0xff;
|
|
dst[off + 3] = (num >>> 24) & 0xff;
|
|
return 4;
|
|
};
|
|
|
|
utils.varint = function(arr, value, off) {
|
|
if (!off)
|
|
off = 0;
|
|
if (value < 0xfd) {
|
|
arr[off] = value;
|
|
return 1;
|
|
} else if (value <= 0xffff) {
|
|
arr[off] = 0xfd;
|
|
arr[off + 1] = value & 0xff;
|
|
arr[off + 2] = value >>> 8;
|
|
return 3;
|
|
} else if (value <= 0xffffffff) {
|
|
arr[off] = 0xfe;
|
|
arr[off + 1] = value & 0xff;
|
|
arr[off + 2] = (value >>> 8) & 0xff;
|
|
arr[off + 3] = (value >>> 16) & 0xff;
|
|
arr[off + 4] = value >>> 24;
|
|
return 5;
|
|
} else {
|
|
arr[off] = 0xff;
|
|
utils.writeU64(arr, value, off + 1);
|
|
return 9;
|
|
}
|
|
};
|
|
|
|
utils.copy = function copy(src, dst, off, force) {
|
|
var len = src.length;
|
|
if (!force)
|
|
len = Math.min(dst.length - off, len);
|
|
for (var i = 0; i < len; i++)
|
|
dst[i + off] = src[i];
|
|
return i;
|
|
};
|
|
|
|
utils.NOOP = function() {};
|
|
|
|
/**
|
|
* Expose
|
|
*/
|
|
|
|
module.exports = exports = bitcoin;
|
|
|
|
exports.Bitcoin = bitcoin;
|
|
exports.bitcoin = bitcoin;
|
|
exports.bitcoind = bitcoin;
|
|
|
|
exports.native = bitcoindjs;
|
|
exports.bitcoindjs = bitcoindjs;
|
|
|
|
exports.Block = Block;
|
|
exports.block = Block;
|
|
|
|
exports.Transaction = Transaction;
|
|
exports.transaction = Transaction;
|
|
exports.tx = Transaction;
|
|
|
|
exports.script = script;
|
|
|
|
exports.utils = utils;
|