Moved block and version messages and shared utils into seperate files.
This commit is contained in:
Braydon Fuller
parent
608e41de07
commit
6ca2f6982c
@ -2,7 +2,7 @@
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var Message = require('./message');
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var BloomFilter = require('../bloomfilter');
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var packageInfo = require('../../package.json');
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var inherits = require('util').inherits;
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var bitcore = require('bitcore');
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var BN = bitcore.crypto.BN;
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@ -11,6 +11,7 @@ var BufferWriter = bitcore.encoding.BufferWriter;
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var BufferUtil = bitcore.util.buffer;
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var $ = bitcore.util.preconditions;
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var _ = bitcore.deps._;
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var utils = require('./utils');
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function builder(options) {
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/* jshint maxstatements: 150 */
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@ -46,192 +47,7 @@ function builder(options) {
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commands: commands
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};
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/* shared */
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function checkFinished(parser) {
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if(!parser.finished()) {
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throw new Error('Data still available after parsing');
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}
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}
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function getNonce() {
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return bitcore.crypto.Random.getRandomBuffer(8);
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}
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function writeIP(ip, bw) {
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var words = ip.v6.split(':').map(function(s) {
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return new Buffer(s, 'hex');
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});
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for (var i = 0; i < words.length; i++) {
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var word = words[i];
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bw.write(word);
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}
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}
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function writeAddr(addr, bw) {
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if (_.isUndefined(addr)) {
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var pad = new Buffer(Array(26));
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bw.write(pad);
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return;
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}
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bw.writeUInt64LEBN(addr.services);
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writeIP(addr.ip, bw);
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bw.writeUInt16BE(addr.port);
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}
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function writeInventory(inventory, bw) {
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bw.writeVarintNum(inventory.length);
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inventory.forEach(function(value) {
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bw.writeUInt32LE(value.type);
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bw.write(value.hash);
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});
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}
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function parseIP(parser) {
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var ipv6 = [];
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var ipv4 = [];
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for (var a = 0; a < 8; a++) {
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var word = parser.read(2);
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ipv6.push(word.toString('hex'));
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if (a >= 6) {
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ipv4.push(word[0]);
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ipv4.push(word[1]);
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}
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}
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ipv6 = ipv6.join(':');
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ipv4 = ipv4.join('.');
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return {
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v6: ipv6,
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v4: ipv4
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};
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}
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function parseAddr(parser) {
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var services = parser.readUInt64LEBN();
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var ip = parseIP(parser);
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var port = parser.readUInt16BE();
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return {
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services: services,
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ip: ip,
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port: port
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};
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}
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function sanitizeStartStop(obj) {
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/* jshint maxcomplexity: 10 */
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$.checkArgument(_.isUndefined(options.starts) || _.isArray(options.starts));
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var starts = obj.starts;
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var stop = obj.stop;
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if (starts) {
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starts = starts.map(function(hash) {
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if (_.isString(hash)) {
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return BufferUtil.reverse(new Buffer(hash, 'hex'));
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} else {
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return hash;
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}
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});
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} else {
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starts = [];
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}
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for (var i = 0; i < starts.length; i++) {
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if (starts[i].length !== 32) {
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throw new Error('Invalid hash ' + i + ' length: ' + starts[i].length);
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}
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}
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stop = obj.stop;
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if (_.isString(stop)) {
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stop = BufferUtil.reverse(new Buffer(stop, 'hex'));
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}
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if (!stop) {
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stop = BufferUtil.NULL_HASH;
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}
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obj.starts = starts;
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obj.stop = stop;
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return obj;
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}
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/**
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* The version message is used on connection creation to advertise
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* the type of node. The remote node will respond with its version, and no
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* communication is possible until both peers have exchanged their versions.
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* By default, bitcore advertises itself as named `bitcore:0.8`.
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*
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* @param{Object} obj - properties for the version
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* @param{String} obj.subversion - version of the client
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* @param{Buffer} obj.nonce - a random 8 byte buffer
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*/
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commands.version = function(obj) {
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Message.call(this, obj);
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this.command = 'version';
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_.assign(this, obj);
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this.magicNumber = magicNumber;
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this.nonce = this.nonce || getNonce();
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this.services = this.services || new BN(1, 10);
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this.timestamp = this.timestamp || new Date();
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this.version = this.version || protocolVersion;
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this.subversion = this.subversion || '/bitcore:' + packageInfo.version + '/';
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this.startHeight = this.startHeight || 0;
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};
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inherits(commands.version, Message);
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commands.version.fromObject = function(obj) {
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return new commands.version(obj);
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};
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commands.version.fromBuffer = function(payload) {
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var parser = new BufferReader(payload);
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var obj = {};
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obj.version = parser.readUInt32LE();
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obj.services = parser.readUInt64LEBN();
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obj.timestamp = new Date(parser.readUInt64LEBN().toNumber() * 1000);
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obj.addrMe = {
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services: parser.readUInt64LEBN(),
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ip: parseIP(parser),
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port: parser.readUInt16BE()
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};
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obj.addrYou = {
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services: parser.readUInt64LEBN(),
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ip: parseIP(parser),
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port: parser.readUInt16BE()
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};
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obj.nonce = parser.read(8);
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obj.subversion = parser.readVarLengthBuffer().toString();
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obj.startHeight = parser.readUInt32LE();
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if(parser.finished()) {
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obj.relay = true;
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} else {
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obj.relay = !!parser.readUInt8();
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}
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checkFinished(parser);
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return commands.version.fromObject(obj);
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};
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commands.version.prototype.getPayload = function() {
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var bw = new BufferWriter();
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bw.writeUInt32LE(this.version);
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bw.writeUInt64LEBN(this.services);
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var timestampBuffer = new Buffer(Array(8));
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timestampBuffer.writeUInt32LE(Math.round(this.timestamp.getTime() / 1000), 0);
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bw.write(timestampBuffer);
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writeAddr(this.addrMe, bw);
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writeAddr(this.addrYou, bw);
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bw.write(this.nonce);
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bw.writeVarintNum(this.subversion.length);
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bw.write(new Buffer(this.subversion, 'ascii'));
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bw.writeUInt32LE(this.startHeight);
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bw.writeUInt8(this.relay);
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return bw.concat();
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};
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commands.version = require('./commands/version')({magicNumber: magicNumber});
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/* verack */
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@ -263,7 +79,7 @@ function builder(options) {
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Message.call(this, options);
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this.command = 'ping';
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this.magicNumber = magicNumber;
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this.nonce = options.nonce || getNonce();
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this.nonce = options.nonce || utils.getNonce();
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};
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inherits(commands.ping, Message);
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@ -280,7 +96,7 @@ function builder(options) {
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var parser = new BufferReader(payload);
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obj.nonce = parser.read(8);
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.ping.fromObject(obj);
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};
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@ -303,7 +119,7 @@ function builder(options) {
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var parser = new BufferReader(payload);
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obj.nonce = parser.read(8);
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.pong.fromObject(obj);
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};
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@ -311,28 +127,7 @@ function builder(options) {
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return this.nonce;
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};
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/* block */
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commands.block = function(options) {
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Message.call(this, options);
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this.command = 'block';
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this.magicNumber = magicNumber;
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this.block = options.block;
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};
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inherits(commands.block, Message);
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commands.block.fromObject = function(options) {
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return new commands.block(options);
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};
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commands.block.fromBuffer = function(payload) {
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var block = Block.fromBuffer(payload);
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return commands.block.fromObject({block: block});
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};
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commands.block.prototype.getPayload = function() {
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return this.block.toBuffer();
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};
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commands.block = require('./commands/block')({Block: Block, magicNumber: magicNumber});
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/* tx */
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@ -390,13 +185,13 @@ function builder(options) {
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obj.inventory.push({type: type, hash: hash});
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}
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.getdata.fromObject(obj);
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};
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commands.getdata.prototype.getPayload = function() {
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var bw = new BufferWriter();
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writeInventory(this.inventory, bw);
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utils.writeInventory(this.inventory, bw);
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return bw.concat();
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};
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@ -433,7 +228,7 @@ function builder(options) {
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$.checkState(txn_count === 0, 'txn_count should always be 0');
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}
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.headers.fromObject(obj);
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};
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@ -476,14 +271,14 @@ function builder(options) {
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obj.inventory.push({type: type, hash: hash});
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}
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.notfound.fromObject(obj);
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};
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commands.notfound.prototype.getPayload = function() {
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var bw = new BufferWriter();
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writeInventory(this.inventory, bw);
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utils.writeInventory(this.inventory, bw);
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return bw.concat();
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};
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@ -504,7 +299,7 @@ function builder(options) {
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commands.inv.prototype.getPayload = function() {
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var bw = new BufferWriter();
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writeInventory(this.inventory, bw);
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utils.writeInventory(this.inventory, bw);
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return bw.concat();
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};
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@ -521,7 +316,7 @@ function builder(options) {
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obj.inventory.push({type: type, hash: hash});
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}
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.inv.fromObject(obj);
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};
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@ -550,12 +345,12 @@ function builder(options) {
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// todo: time only available on versions >=31402
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var time = new Date(parser.readUInt32LE() * 1000);
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var addr = parseAddr(parser);
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var addr = utils.parseAddr(parser);
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addr.time = time;
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obj.addresses.push(addr);
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}
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.addr.fromObject(obj);
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};
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@ -566,7 +361,7 @@ function builder(options) {
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for (var i = 0; i < this.addresses.length; i++) {
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var addr = this.addresses[i];
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bw.writeUInt32LE(addr.time.getTime() / 1000);
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writeAddr(addr, bw);
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utils.writeAddr(addr, bw);
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}
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return bw.concat();
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@ -594,7 +389,7 @@ function builder(options) {
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var parser = new BufferReader(payload);
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obj.payload = parser.readVarLengthBuffer();
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obj.signature = parser.readVarLengthBuffer();
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.alert.fromObject(obj);
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};
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@ -717,7 +512,7 @@ function builder(options) {
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$.checkArgument(payload);
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var parser = new BufferReader(payload);
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obj.data = parser.readVarLengthBuffer();
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.filteradd.fromObject(obj);
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};
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@ -763,7 +558,7 @@ function builder(options) {
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this.version = protocolVersion;
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this.magicNumber = magicNumber;
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options = sanitizeStartStop(options);
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options = utils.sanitizeStartStop(options);
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this.starts = options.starts;
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this.stop = options.stop;
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@ -787,7 +582,7 @@ function builder(options) {
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obj.starts.push(parser.read(32));
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}
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obj.stop = parser.read(32);
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.getblocks.fromObject(obj);
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};
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@ -818,7 +613,7 @@ function builder(options) {
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this.version = protocolVersion;
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this.magicNumber = magicNumber;
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options = sanitizeStartStop(options);
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options = utils.sanitizeStartStop(options);
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this.starts = options.starts;
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this.stop = options.stop;
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@ -842,7 +637,7 @@ function builder(options) {
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obj.starts.push(parser.read(32));
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}
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obj.stop = parser.read(32);
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checkFinished(parser);
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utils.checkFinished(parser);
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return commands.getheaders.fromObject(obj);
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};
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@ -881,7 +676,6 @@ function builder(options) {
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};
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/* getaddr */
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//todo: need test data
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commands.getaddr = function(options) {
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Message.call(this, options);
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this.magicNumber = magicNumber;
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35
lib/messages/commands/block.js
Normal file
35
lib/messages/commands/block.js
Normal file
@ -0,0 +1,35 @@
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'use strict';
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var Message = require('../message');
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var inherits = require('util').inherits;
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var bitcore = require('bitcore');
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var Block = bitcore.Block;
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var magicNumber = bitcore.Networks.defaultNetwork.networkMagic.readUInt32LE(0);
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function BlockMessage(options) {
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Message.call(this, options);
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this.command = 'block';
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this.magicNumber = magicNumber;
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this.block = options.block;
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}
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inherits(BlockMessage, Message);
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BlockMessage.fromObject = function(options) {
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return new BlockMessage(options);
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};
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BlockMessage.fromBuffer = function(payload) {
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var block = Block.fromBuffer(payload);
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return BlockMessage.fromObject({block: block});
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};
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BlockMessage.prototype.getPayload = function() {
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return this.block.toBuffer();
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};
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module.exports = function(options) {
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Block = options.Block;
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magicNumber = options.magicNumber;
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return BlockMessage;
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};
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100
lib/messages/commands/version.js
Normal file
100
lib/messages/commands/version.js
Normal file
@ -0,0 +1,100 @@
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'use strict';
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var Message = require('../message');
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var inherits = require('util').inherits;
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var bitcore = require('bitcore');
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var BufferWriter = bitcore.encoding.BufferWriter;
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var BufferReader = bitcore.encoding.BufferReader;
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var _ = bitcore.deps._;
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var BN = bitcore.crypto.BN;
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var utils = require('../utils');
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var magicNumber = bitcore.Networks.defaultNetwork.networkMagic.readUInt32LE(0);
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var protocolVersion = 70000;
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var packageInfo = require('../../../package.json');
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/**
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* The version message is used on connection creation to advertise
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* the type of node. The remote node will respond with its version, and no
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* communication is possible until both peers have exchanged their versions.
|
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* By default, bitcore advertises itself as named `bitcore:0.8`.
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*
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* @param{Object} obj - properties for the version
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* @param{String} obj.subversion - version of the client
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* @param{Buffer} obj.nonce - a random 8 byte buffer
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*/
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function VersionMessage(obj) {
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/* jshint maxcomplexity: 10 */
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Message.call(this, obj);
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this.command = 'version';
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_.assign(this, obj);
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this.magicNumber = magicNumber;
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this.nonce = this.nonce || utils.getNonce();
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this.services = this.services || new BN(1, 10);
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this.timestamp = this.timestamp || new Date();
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this.version = this.version || protocolVersion;
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this.subversion = this.subversion || '/bitcore:' + packageInfo.version + '/';
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this.startHeight = this.startHeight || 0;
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};
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inherits(VersionMessage, Message);
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VersionMessage.fromObject = function(obj) {
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return new VersionMessage(obj);
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};
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VersionMessage.fromBuffer = function(payload) {
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var parser = new BufferReader(payload);
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var obj = {};
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obj.version = parser.readUInt32LE();
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obj.services = parser.readUInt64LEBN();
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obj.timestamp = new Date(parser.readUInt64LEBN().toNumber() * 1000);
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obj.addrMe = {
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services: parser.readUInt64LEBN(),
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ip: utils.parseIP(parser),
|
||||
port: parser.readUInt16BE()
|
||||
};
|
||||
obj.addrYou = {
|
||||
services: parser.readUInt64LEBN(),
|
||||
ip: utils.parseIP(parser),
|
||||
port: parser.readUInt16BE()
|
||||
};
|
||||
obj.nonce = parser.read(8);
|
||||
obj.subversion = parser.readVarLengthBuffer().toString();
|
||||
obj.startHeight = parser.readUInt32LE();
|
||||
|
||||
if(parser.finished()) {
|
||||
obj.relay = true;
|
||||
} else {
|
||||
obj.relay = !!parser.readUInt8();
|
||||
}
|
||||
utils.checkFinished(parser);
|
||||
|
||||
return VersionMessage.fromObject(obj);
|
||||
};
|
||||
|
||||
VersionMessage.prototype.getPayload = function() {
|
||||
var bw = new BufferWriter();
|
||||
bw.writeUInt32LE(this.version);
|
||||
bw.writeUInt64LEBN(this.services);
|
||||
|
||||
var timestampBuffer = new Buffer(Array(8));
|
||||
timestampBuffer.writeUInt32LE(Math.round(this.timestamp.getTime() / 1000), 0);
|
||||
bw.write(timestampBuffer);
|
||||
|
||||
utils.writeAddr(this.addrMe, bw);
|
||||
utils.writeAddr(this.addrYou, bw);
|
||||
bw.write(this.nonce);
|
||||
bw.writeVarintNum(this.subversion.length);
|
||||
bw.write(new Buffer(this.subversion, 'ascii'));
|
||||
bw.writeUInt32LE(this.startHeight);
|
||||
bw.writeUInt8(this.relay);
|
||||
|
||||
return bw.concat();
|
||||
};
|
||||
|
||||
module.exports = function(options) {
|
||||
magicNumber = options.magicNumber || magicNumber;
|
||||
protocolVersion = options.protocolVersion || protocolVersion;
|
||||
return VersionMessage;
|
||||
};
|
||||
109
lib/messages/utils.js
Normal file
109
lib/messages/utils.js
Normal file
@ -0,0 +1,109 @@
|
||||
'use strict';
|
||||
|
||||
var bitcore = require('bitcore');
|
||||
var BufferUtil = bitcore.util.buffer;
|
||||
var $ = bitcore.util.preconditions;
|
||||
var _ = bitcore.deps._;
|
||||
var utils;
|
||||
|
||||
module.exports = utils = {
|
||||
checkFinished: function checkFinished(parser) {
|
||||
if(!parser.finished()) {
|
||||
throw new Error('Data still available after parsing');
|
||||
}
|
||||
},
|
||||
getNonce: function getNonce() {
|
||||
return bitcore.crypto.Random.getRandomBuffer(8);
|
||||
},
|
||||
writeIP: function writeIP(ip, bw) {
|
||||
var words = ip.v6.split(':').map(function(s) {
|
||||
return new Buffer(s, 'hex');
|
||||
});
|
||||
for (var i = 0; i < words.length; i++) {
|
||||
var word = words[i];
|
||||
bw.write(word);
|
||||
}
|
||||
},
|
||||
writeAddr: function writeAddr(addr, bw) {
|
||||
if (_.isUndefined(addr)) {
|
||||
var pad = new Buffer(Array(26));
|
||||
bw.write(pad);
|
||||
return;
|
||||
}
|
||||
|
||||
bw.writeUInt64LEBN(addr.services);
|
||||
utils.writeIP(addr.ip, bw);
|
||||
bw.writeUInt16BE(addr.port);
|
||||
},
|
||||
writeInventory: function writeInventory(inventory, bw) {
|
||||
bw.writeVarintNum(inventory.length);
|
||||
inventory.forEach(function(value) {
|
||||
bw.writeUInt32LE(value.type);
|
||||
bw.write(value.hash);
|
||||
});
|
||||
},
|
||||
parseIP: function parseIP(parser) {
|
||||
var ipv6 = [];
|
||||
var ipv4 = [];
|
||||
for (var a = 0; a < 8; a++) {
|
||||
var word = parser.read(2);
|
||||
ipv6.push(word.toString('hex'));
|
||||
if (a >= 6) {
|
||||
ipv4.push(word[0]);
|
||||
ipv4.push(word[1]);
|
||||
}
|
||||
}
|
||||
ipv6 = ipv6.join(':');
|
||||
ipv4 = ipv4.join('.');
|
||||
return {
|
||||
v6: ipv6,
|
||||
v4: ipv4
|
||||
};
|
||||
},
|
||||
parseAddr: function parseAddr(parser) {
|
||||
var services = parser.readUInt64LEBN();
|
||||
var ip = utils.parseIP(parser);
|
||||
var port = parser.readUInt16BE();
|
||||
return {
|
||||
services: services,
|
||||
ip: ip,
|
||||
port: port
|
||||
};
|
||||
},
|
||||
sanitizeStartStop: function sanitizeStartStop(obj) {
|
||||
/* jshint maxcomplexity: 10 */
|
||||
/* jshint maxstatements: 20 */
|
||||
$.checkArgument(_.isUndefined(obj.starts) || _.isArray(obj.starts));
|
||||
var starts = obj.starts;
|
||||
var stop = obj.stop;
|
||||
if (starts) {
|
||||
starts = starts.map(function(hash) {
|
||||
if (_.isString(hash)) {
|
||||
return BufferUtil.reverse(new Buffer(hash, 'hex'));
|
||||
} else {
|
||||
return hash;
|
||||
}
|
||||
});
|
||||
} else {
|
||||
starts = [];
|
||||
}
|
||||
|
||||
for (var i = 0; i < starts.length; i++) {
|
||||
if (starts[i].length !== 32) {
|
||||
throw new Error('Invalid hash ' + i + ' length: ' + starts[i].length);
|
||||
}
|
||||
}
|
||||
|
||||
stop = obj.stop;
|
||||
if (_.isString(stop)) {
|
||||
stop = BufferUtil.reverse(new Buffer(stop, 'hex'));
|
||||
}
|
||||
if (!stop) {
|
||||
stop = BufferUtil.NULL_HASH;
|
||||
}
|
||||
obj.starts = starts;
|
||||
obj.stop = stop;
|
||||
|
||||
return obj;
|
||||
}
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user