557 lines
13 KiB
JavaScript
557 lines
13 KiB
JavaScript
var bcoin = require('../bcoin');
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var hash = require('hash.js');
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var bn = require('bn.js');
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var inherits = require('inherits');
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var EventEmitter = require('events').EventEmitter;
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var utils = bcoin.utils;
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var assert = utils.assert;
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var constants = bcoin.protocol.constants;
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var network = bcoin.protocol.network;
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function Wallet(options, passphrase) {
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if (!(this instanceof Wallet))
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return new Wallet(options, passphrase);
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EventEmitter.call(this);
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// bcoin.wallet('scope', 'password')
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if (typeof options === 'string' && typeof passphrase === 'string') {
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options = {
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scope: options,
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passphrase: passphrase
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};
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}
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if (!options)
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options = {};
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this.options = options;
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this.compressed = typeof options.compressed !== 'undefined' ?
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options.compressed : true;
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this.storage = options.storage;
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this.label = options.label || '';
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this.key = null;
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this.loaded = false;
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this.lastTs = 0;
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if (options.priv instanceof bcoin.hd.priv) {
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this.hd = options.priv;
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this.key = this.hd;
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} else if (options.pub instanceof bcoin.hd.pub) {
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this.hd = options.pub;
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this.key = this.hd;
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} else if (options.hd) {
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this.hd = bcoin.hd.priv(options);
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this.key = this.hd;
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} else if (options.key) {
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if ((options.key instanceof bcoin.hd.priv)
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|| (options.key instanceof bcoin.hd.pub)) {
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this.hd = options.key;
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this.key = options.key;
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} else {
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this.key = options.key;
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}
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} else if (options.passphrase) {
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this.key = bcoin.ecdsa.genKeyPair({
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pers: options.scope,
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entropy: hash.sha256().update(options.passphrase).digest()
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});
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} else if (options.priv || options.pub) {
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this.key = bcoin.ecdsa.keyPair({
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priv: options.priv,
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pub: options.pub
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});
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} else {
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this.key = bcoin.ecdsa.genKeyPair();
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}
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this.type = 'pubkey';
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this.keys = [];
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this.m = 1;
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this.n = 1;
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this.multisig(options.multisig || {});
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this.prefix = 'bt/' + this.getOwnAddress() + '/';
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this.tx = new bcoin.txPool(this);
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// Just a constants, actually
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this.fee = 10000;
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this.dust = 5460;
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this._init();
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}
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inherits(Wallet, EventEmitter);
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module.exports = Wallet;
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Wallet.prototype._init = function init() {
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if (this.tx._loaded) {
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this.loaded = true;
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return;
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}
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// Notify owners about new accepted transactions
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var self = this;
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var prevBalance = null;
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this.tx.on('update', function(lastTs, tx) {
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var b = this.balance();
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if (prevBalance && prevBalance.cmp(b) !== 0)
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self.emit('balance', b);
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self.emit('update', tx);
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prevBalance = b;
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});
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this.tx.on('tx', function(tx) {
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self.emit('tx', tx);
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});
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this.tx.once('load', function(ts) {
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self.loaded = true;
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self.lastTs = ts;
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self.emit('load', ts);
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});
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this.tx.on('error', function(err) {
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self.emit('error', err);
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});
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};
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Wallet.prototype.multisig = function multisig(options) {
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var pub = this.getOwnPublicKey();
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options.type = options.type || options.prefix;
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options.keys = options.keys || options.pubkeys || [];
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this.type = options.type || 'pubkey';
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// this.keys = (options.keys || []).map(utils.toKeyArray);
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this.keys = [];
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this.m = options.m || 1;
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this.n = options.n || 1;
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this.nmax = this.type === 'script'
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? (this.compressed ? 15 : 7)
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: 3;
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this.addKey(pub);
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options.keys.forEach(function(key) {
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this.addKey(key);
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}, this);
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// Use p2sh multisig by default
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if (!options.type && this.keys.length > 1)
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this.type = 'script';
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if (this.m < 1 || this.m > this.n)
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throw new Error('m ranges between 1 and n');
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if (this.n < 1 || this.n > this.nmax)
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throw new Error('n ranges between 1 and ' + this.nmax);
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if (this.keys.length > this.n)
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throw new Error('No more than ' + this.n + ' are necessary');
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// if (this.keys.length < this.m)
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// throw new Error(this.m + ' public keys required');
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};
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Wallet.prototype.addKey = function addKey(key) {
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key = utils.toKeyArray(key);
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var has = this.keys.some(function(k) {
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return utils.isEqual(k, key);
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});
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if (has)
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return;
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this.keys.push(key);
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// Keys need to be in a predictable order.
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this.keys = this.keys.sort(function(a, b) {
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return new bn(a).cmp(new bn(b)) > 0;
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});
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};
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Wallet.prototype.removeKey = function removeKey(key) {
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key = utils.toKeyArray(key);
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var index = this.keys.map(function(key, i) {
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return utils.isEqual(key, pub) ? i : null;
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}).filter(function(i) {
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return i !== null;
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})[0];
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if (index == null)
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return;
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this.keys.splice(index, 1);
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// Keys need to be in a predictable order.
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this.keys = this.keys.sort(function(a, b) {
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return new bn(a).cmp(new bn(b)) > 0;
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});
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};
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Wallet.prototype.derive = function derive() {
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var options = this.options;
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if (!this.hd)
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throw new Error('Wallet is not HD');
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options.priv = this.hd.derive.apply(this.hd, arguments);
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return bcoin.wallet(options);
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};
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Wallet.prototype.getPrivateKey = function getPrivateKey(enc) {
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var priv = this.key.getPrivate();
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if (priv)
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priv = priv.toArray();
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else
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return;
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if (!enc)
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return priv;
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if (enc === 'base58') {
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// We'll be using ncompressed public key as an address
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var arr = [ network.prefixes.privkey ];
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// 0-pad key
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while (arr.length + priv.length < 33)
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arr.push(0);
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arr = arr.concat(priv);
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if (this.compressed)
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arr.push(1);
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var chk = utils.checksum(arr);
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return utils.toBase58(arr.concat(chk));
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} else {
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return priv;
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}
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};
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Wallet.prototype.getFullPublicKey = function getFullPublicKey(enc) {
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var pub = this.getOwnPublicKey();
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if (this.type === 'script') {
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var keys = this.getPublicKeys();
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pub = bcoin.script.encode(bcoin.script.multisig(keys, this.m, this.n));
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}
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if (enc === 'base58')
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return utils.toBase58(pub);
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else if (enc === 'hex')
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return utils.toHex(pub);
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else
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return pub;
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};
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Wallet.prototype.getOwnPublicKey = function getOwnPublicKey(enc) {
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var pub = this.key.getPublic(this.compressed, 'array');
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if (enc === 'base58')
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return utils.toBase58(pub);
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else if (enc === 'hex')
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return utils.toHex(pub);
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else
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return pub;
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};
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Wallet.prototype.getPublicKey = function getPublicKey(enc) {
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return this.getFullPublicKey(enc);
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};
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Wallet.prototype.getPublicKeys = function() {
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var keys = this.keys.slice().map(utils.toKeyArray);
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// Keys need to be in a predictable order.
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keys = keys.sort(function(a, b) {
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return new bn(a).cmp(new bn(b)) > 0;
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});
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return keys;
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};
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Wallet.prototype.getFullHash = function getFullHash() {
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return utils.ripesha(this.getFullPublicKey());
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};
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Wallet.prototype.getFullAddress = function getFullAddress() {
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return Wallet.hash2addr(this.getFullHash(), this.type);
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};
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Wallet.prototype.getOwnHash = function getOwnHash() {
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return utils.ripesha(this.getOwnPublicKey());
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};
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Wallet.prototype.getOwnAddress = function getOwnAddress() {
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return Wallet.hash2addr(this.getOwnHash(), this.type);
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};
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Wallet.prototype.getHash = function getHash() {
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return utils.ripesha(this.getFullPublicKey());
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};
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Wallet.prototype.getAddress = function getAddress() {
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return Wallet.hash2addr(this.getFullHash(), this.type);
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};
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Wallet.hash2addr = function hash2addr(hash, prefix) {
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hash = utils.toArray(hash, 'hex');
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prefix = network.prefixes[prefix || 'pubkey'];
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hash = [ prefix ].concat(hash);
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var addr = hash.concat(utils.checksum(hash));
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return utils.toBase58(addr);
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};
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Wallet.__defineGetter__('prefixes', function() {
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if (Wallet._prefixes) return Wallet._prefixes;
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Wallet._prefixes = ['pubkey', 'script'].reduce(function(out, prefix) {
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var ch = Wallet.hash2addr(bcoin.utils.ripesha([]), prefix)[0];
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out[ch] = prefix;
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return out;
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}, {});
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return Wallet._prefixes;
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});
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Wallet.addr2hash = function addr2hash(addr, prefix) {
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if (prefix == null && typeof addr === 'string')
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prefix = Wallet.prefixes[addr[0]];
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if (!Array.isArray(addr))
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addr = utils.fromBase58(addr);
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prefix = network.prefixes[prefix || 'pubkey'];
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if (addr.length !== 25)
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return [];
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if (addr[0] !== prefix)
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return [];
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var chk = utils.checksum(addr.slice(0, -4));
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if (utils.readU32(chk, 0) !== utils.readU32(addr, 21))
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return [];
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return addr.slice(1, -4);
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};
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Wallet.prototype.validateAddress = function validateAddress(addr, prefix) {
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if (!addr)
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return false;
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var p = Wallet.addr2hash(addr, prefix);
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return p.length !== 0;
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};
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Wallet.validateAddress = Wallet.prototype.validateAddress;
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Wallet.prototype.ownOutput = function ownOutput(tx, index) {
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var scriptHash = this.getFullHash();
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var hash = this.getOwnHash();
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var key = this.getOwnPublicKey();
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var outputs = tx.outputs.filter(function(output, i) {
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if (index !== undefined && index !== i)
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return false;
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var s = output.script;
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if (bcoin.script.isPubkeyhash(s, hash))
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return true;
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if (bcoin.script.isSimplePubkeyhash(s, hash))
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return true;
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if (bcoin.script.isMultisig(s, key))
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return true;
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if (bcoin.script.isScripthash(s, scriptHash))
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return true;
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return false;
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}, this);
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if (outputs.length === 0)
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return false;
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return outputs;
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};
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Wallet.prototype.ownInput = function ownInput(tx, index) {
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var scriptHash = this.getFullHash();
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var hash = this.getOwnHash();
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var key = this.getOwnPublicKey();
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var inputs = tx.inputs.filter(function(input, i) {
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if (index !== undefined && index !== i)
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return false;
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if (bcoin.script.isPubkeyhashInput(input.script) &&
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utils.isEqual(input.script[1], key))
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return true;
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if (!input.out.tx)
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return false;
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var s = input.out.tx.outputs[input.out.index].script;
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if (bcoin.script.isPubkeyhash(s, hash))
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return true;
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if (bcoin.script.isMultisig(s, key))
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return true;
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if (bcoin.script.isScripthash(s, scriptHash))
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return true;
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return false;
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}, this);
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if (inputs.length === 0)
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return false;
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return inputs;
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};
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Wallet.prototype.sign = function sign(tx, type, inputs) {
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if (!type)
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type = 'all';
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var pub = this.getFullPublicKey();
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var key = this.key;
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inputs = inputs || tx.inputs;
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// Add signature script to each input
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inputs = inputs.filter(function(input) {
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// Filter inputs that this wallet own
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if (!input.out.tx || !this.ownOutput(input.out.tx))
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return false;
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tx.scriptSig(input, key, pub, type);
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return true;
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}, this);
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return inputs.length;
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};
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Wallet.prototype.addTX = function addTX(tx, block) {
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return this.tx.add(tx);
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};
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Wallet.prototype.all = function all() {
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return this.tx.all();
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};
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Wallet.prototype.unspent = function unspent() {
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return this.tx.unspent();
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};
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Wallet.prototype.pending = function pending() {
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return this.tx.pending();
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};
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Wallet.prototype.balance = function balance() {
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return this.tx.balance();
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};
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Wallet.prototype.fill = function fill(tx, cb) {
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cb = utils.asyncify(cb);
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var result = tx.fillUnspent(this.unspent(), this.getAddress());
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if (!result) {
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var err = new Error('Not enough funds');
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err.minBalance = tx.total;
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cb(err);
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return null;
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}
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this.sign(tx);
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cb(null, tx);
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return tx;
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};
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Wallet.prototype.toJSON = function toJSON(encrypt) {
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encrypt = encrypt || function(msg) {
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return msg;
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};
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return {
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v: 1,
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type: 'wallet',
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network: network.type,
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encrypted: encrypt ? true : false,
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label: this.label,
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address: this.getAddress(),
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balance: utils.toBTC(this.balance()),
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pub: this.getOwnPublicKey('base58'),
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priv: encrypt
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? encrypt(this.getPrivateKey('base58'))
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: this.getPrivateKey('base58'),
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tx: this.tx.toJSON(),
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ntx: this.tx.all().length,
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hd: this.hd ? {
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// seed: this.hd.seed ? {
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// mnemonic: this.hd.seed.mnemonic,
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// passphrase: this.hd.seed.passphrase
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// } : undefined,
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depth: this.hd.data.depth,
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parentFingerPrint: utils.toHex(this.hd.data.parentFingerPrint),
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childIndex: this.hd.data.childIndex,
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chainCode: utils.toHex(this.hd.data.chainCode)
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} : undefined,
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multisig: this.n > 1 ? {
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type: this.type,
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keys: this.keys.map(utils.toHex),
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m: this.m,
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n: this.n
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} : undefined
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};
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};
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Wallet.fromJSON = function fromJSON(json, decrypt) {
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assert.equal(json.v, 1);
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assert.equal(json.type, 'wallet');
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if (json.network)
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assert.equal(json.network, network.type);
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if (decrypt)
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json.priv = decrypt(json.priv);
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var priv;
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var pub;
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var compressed;
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if (json.priv) {
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var key = bcoin.utils.fromBase58(json.priv);
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assert(utils.isEqual(key.slice(-4), utils.checksum(key.slice(0, -4))));
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assert.equal(key[0], network.prefixes.privkey);
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key = key.slice(0, -4);
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if (key.length === 34) {
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assert.equal(key[33], 1);
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priv = key.slice(1, -1);
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compressed = true;
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} else {
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priv = key.slice(1);
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compressed = false;
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}
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} else {
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pub = bcoin.utils.fromBase58(json.pub);
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compressed = pub[0] !== 0x04;
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}
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if (json.multisig)
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json.multisig.keys = json.multisig.keys.map(utils.toKeyArray);
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if (json.hd) {
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json.hd.privateKey = priv;
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priv = new hd.priv(json.hd);
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}
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var w = new Wallet({
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label: json.label,
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priv: priv,
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pub: pub,
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compressed: compressed,
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multisig: json.multisig
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});
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w.tx.fromJSON(json.tx);
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return w;
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};
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