144 lines
3.3 KiB
JavaScript
144 lines
3.3 KiB
JavaScript
'use strict';
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var _ = require('lodash');
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var util = require('util');
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var $ = require('preconditions').singleton();
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var Bitcore = require('bitcore');
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var BitcoreAddress = Bitcore.Address;
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var Uuid = require('uuid');
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var Address = require('./address');
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var Copayer = require('./copayer');
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var AddressManager = require('./addressmanager');
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var VERSION = '1.0.0';
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function Wallet(opts) {
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opts = opts || {};
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this.version = VERSION;
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this.createdOn = Math.floor(Date.now() / 1000);
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this.id = Uuid.v4();
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this.name = opts.name;
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this.m = opts.m;
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this.n = opts.n;
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this.status = 'pending';
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this.publicKeyRing = [];
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this.addressIndex = 0;
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this.copayers = [];
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this.pubKey = opts.pubKey;
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this.isTestnet = opts.isTestnet;
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this.addressManager = new AddressManager();
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};
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/* For compressed keys, m*73 + n*34 <= 496 */
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Wallet.COPAYER_PAIR_LIMITS = {
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1: 1,
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2: 2,
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3: 3,
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4: 4,
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5: 4,
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6: 4,
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7: 3,
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8: 3,
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9: 2,
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10: 2,
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11: 1,
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12: 1,
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};
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/**
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* Get the maximum allowed number of required copayers.
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* This is a limit imposed by the maximum allowed size of the scriptSig.
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* @param {number} totalCopayers - the total number of copayers
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* @return {number}
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*/
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Wallet.getMaxRequiredCopayers = function(totalCopayers) {
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return Wallet.COPAYER_PAIR_LIMITS[totalCopayers];
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};
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Wallet.verifyCopayerLimits = function(m, n) {
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return (n >= 1 && n <= 12) && (m >= 1 && m <= Wallet.COPAYER_PAIR_LIMITS[n]);
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};
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Wallet.fromObj = function(obj) {
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var x = new Wallet();
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x.createdOn = obj.createdOn;
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x.id = obj.id;
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x.name = obj.name;
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x.m = obj.m;
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x.n = obj.n;
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x.status = obj.status;
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x.publicKeyRing = obj.publicKeyRing;
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x.copayers = _.map(obj.copayers, function(copayer) {
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return Copayer.fromObj(copayer);
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});
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x.pubKey = obj.pubKey;
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x.isTestnet = obj.isTestnet;
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x.addressManager = AddressManager.fromObj(obj.addressManager);
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return x;
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};
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Wallet.prototype.isShared = function() {
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return this.n > 1;
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};
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Wallet.prototype.addCopayer = function(copayer) {
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this.copayers.push(copayer);
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if (this.copayers.length < this.n) return;
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this.status = 'complete';
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this.publicKeyRing = _.pluck(this.copayers, 'xPubKey');
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};
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Wallet.prototype.getCopayer = function(copayerId) {
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return _.find(this.copayers, {
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id: copayerId
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});
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};
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Wallet.prototype.getNetworkName = function() {
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return this.isTestnet ? 'testnet' : 'livenet';
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};
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Wallet.prototype._getBitcoreNetwork = function() {
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return this.isTestnet ? Bitcore.Networks.testnet : Bitcore.Networks.livenet;
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};
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Wallet.prototype.getPublicKey = function(copayerId, path) {
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var copayer = this.getCopayer(copayerId);
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return copayer.getPublicKey(path);
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};
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Wallet.prototype.isComplete = function() {
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return this.status == 'complete';
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};
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Wallet.prototype.createAddress = function(isChange) {
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$.checkState(this.isComplete());
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var path = this.addressManager.getNewAddressPath(isChange);
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var publicKeys = _.map(this.copayers, function(copayer) {
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var xpub = new Bitcore.HDPublicKey(copayer.xPubKey);
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return xpub.derive(path).publicKey;
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});
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var bitcoreAddress = BitcoreAddress.createMultisig(publicKeys, this.m, this._getBitcoreNetwork());
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return new Address({
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address: bitcoreAddress.toString(),
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path: path,
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publicKeys: _.invoke(publicKeys, 'toString'),
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});
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};
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module.exports = Wallet;
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