433 lines
8.9 KiB
JavaScript
433 lines
8.9 KiB
JavaScript
/**
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* walletdb.js - storage for wallets
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* Copyright (c) 2014-2015, Fedor Indutny (MIT License)
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* https://github.com/indutny/bcoin
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*/
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var EventEmitter = require('events').EventEmitter;
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var bcoin = require('../bcoin');
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var levelup = require('levelup');
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var bn = require('bn.js');
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var constants = bcoin.protocol.constants;
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var network = bcoin.protocol.network;
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var utils = bcoin.utils;
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var assert = utils.assert;
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var fs = bcoin.fs;
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/**
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* WalletDB
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*/
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function WalletDB(node, options) {
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if (!(this instanceof WalletDB))
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return new WalletDB(node, options);
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if (WalletDB.global)
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return WalletDB.global;
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if (!options)
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options = {};
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EventEmitter.call(this);
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this.node = node;
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this.options = options;
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this.file = options.file;
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bcoin.ensurePrefix();
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if (!this.file)
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this.file = bcoin.prefix + '/wallet-' + network.type + '.db';
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WalletDB.global = this;
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this._init();
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}
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utils.inherits(WalletDB, EventEmitter);
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WalletDB._db = {};
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WalletDB.prototype._init = function _init() {
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var levelup;
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if (!WalletDB._db[this.file]) {
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// Some lazy loading
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levelup = require('levelup');
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WalletDB._db[this.file] = new levelup(this.file, {
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keyEncoding: 'ascii',
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valueEncoding: 'binary',
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createIfMissing: true,
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errorIfExists: false,
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compression: true,
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cacheSize: 1 * 1024 * 1024,
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writeBufferSize: 1 * 1024 * 1024,
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// blockSize: 4 * 1024,
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maxOpenFiles: 1024,
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// blockRestartInterval: 16,
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db: bcoin.isBrowser
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? require('level-js')
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: require('level' + 'down')
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});
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}
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this.db = WalletDB._db[this.file];
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};
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WalletDB.prototype.getJSON = function getJSON(id, callback) {
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if (typeof id === 'object')
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id = id.id;
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callback = utils.ensure(callback);
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return this._getDB(id, callback);
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};
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WalletDB.prototype.saveJSON = function saveJSON(id, json, callback) {
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var self = this;
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callback = utils.ensure(callback);
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if (json instanceof bcoin.wallet) {
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json = json.toJSON();
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} else {
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if (typeof json.v !== 'number') {
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json = utils.merge({}, json);
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delete json.store;
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delete json.db;
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json = new bcoin.wallet(json).toJSON();
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}
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}
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function cb(err, json) {
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var batch;
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if (err)
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return callback(err);
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if (json && self.type === 'leveldb') {
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batch = self.db.batch();
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Object.keys(json.addressMap).forEach(function(address) {
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batch.put('w/a/' + address + '/' + json.id, new Buffer([]));
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});
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return batch.write(function(err) {
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if (err)
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return callback(err);
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return callback(null, json);
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});
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}
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return callback(null, json);
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}
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return this._saveDB(id, json, cb);
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};
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WalletDB.prototype.removeJSON = function removeJSON(id, callback) {
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var self = this;
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callback = utils.ensure(callback);
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if (typeof id === 'object')
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id = id.id;
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function cb(err, json) {
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var batch;
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if (err)
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return callback(err);
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if (json && self.type === 'leveldb') {
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batch = self.db.batch();
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Object.keys(json.addressMap).forEach(function(address) {
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batch.del('w/a/' + address + '/' + json.id);
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});
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return batch.write(function(err) {
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if (err)
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return callback(err);
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return callback(null, json);
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});
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}
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return callback(null, json);
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}
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return this._removeDB(id, cb);
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};
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WalletDB.prototype.createJSON = function createJSON(id, options, callback) {
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var self = this;
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callback = utils.ensure(callback);
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return this.getJSON(id, function(err, json) {
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if (err)
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return callback(err);
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if (!json)
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return self.saveJSON(options.id, options, callback);
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return callback(null, json);
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});
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};
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WalletDB.prototype._getDB = function _getDB(id, callback) {
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var self = this;
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var key;
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callback = utils.ensure(callback);
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key = 'w/w/' + id;
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this.db.get(key, function(err, json) {
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if (err && err.type === 'NotFoundError')
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return callback();
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if (err)
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return callback(err);
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try {
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json = JSON.parse(json.toString('utf8'));
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} catch (e) {
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return callback(e);
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}
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return callback(null, json);
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});
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};
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WalletDB.prototype._saveDB = function _saveDB(id, json, callback) {
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var key = 'w/w/' + id;
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var data;
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callback = utils.ensure(callback);
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data = new Buffer(JSON.stringify(json), 'utf8');
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this.db.put(key, data, function(err) {
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if (err)
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return callback(err);
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return callback(null, json);
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});
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};
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WalletDB.prototype._removeDB = function _removeDB(id, callback) {
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var self = this;
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var key = 'w/w/' + id;
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callback = utils.ensure(callback);
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this._getDB(id, function(err, json) {
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if (err)
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return callback(err);
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self.db.del(key, function(err) {
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if (err && err.type !== 'NotFoundError')
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return callback(err);
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return callback(null, json);
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});
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});
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};
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WalletDB.prototype.get = function get(id, passphrase, callback) {
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if (typeof passphrase === 'function') {
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callback = passphrase;
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passphrase = null;
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}
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callback = utils.ensure(callback);
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return this.getJSON(id, function(err, options) {
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var wallet;
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if (err)
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return callback(err);
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if (!options)
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return callback();
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wallet = bcoin.wallet.fromJSON(options, passphrase);
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wallet.store = true;
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wallet.db = self;
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return callback(null, wallet);
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});
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};
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WalletDB.prototype.save = function save(options, callback) {
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var self = this;
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var passphrase = options.passphrase;
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callback = utils.ensure(callback);
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return this.saveJSON(options.id, options, callback);
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};
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WalletDB.prototype.remove = function save(id, callback) {
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var self = this;
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callback = utils.ensure(callback);
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if (id instanceof bcoin.wallet) {
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id.store = false;
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id.db = null;
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id = id.id;
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}
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return this.removeJSON(id, callback);
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};
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WalletDB.prototype.create = function create(options, callback) {
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var self = this;
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var passphrase = options.passphrase;
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callback = utils.ensure(callback);
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if (options instanceof bcoin.wallet) {
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options.store = true;
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options.db = this;
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}
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return this.createJSON(options.id, options, function(err, json) {
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var wallet;
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if (err)
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return callback(err);
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wallet = bcoin.wallet.fromJSON(json, options.passphrase);
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wallet.store = true;
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wallet.db = self;
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return callback(null, wallet);
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});
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};
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WalletDB.prototype.saveAddress = function saveAddress(id, address, callback) {
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callback = utils.ensure(callback);
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this.db.put('w/a/' + address + '/' + id, new Buffer([]), callback);
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};
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WalletDB.prototype.removeAddress = function removeAddress(id, address, callback) {
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callback = utils.ensure(callback);
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this.db.del('w/a/' + address + '/' + id, callback);
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};
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WalletDB.prototype._getIDs = function _getIDs(address, callback) {
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var self = this;
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var ids = [];
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var iter = this.db.db.iterator({
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gte: 'w/a/' + address,
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lte: 'w/a/' + address + '~',
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keys: true,
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values: false,
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fillCache: false,
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keyAsBuffer: false
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});
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callback = utils.ensure(callback);
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(function next() {
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iter.next(function(err, key, value) {
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if (err) {
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return iter.end(function() {
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callback(err);
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});
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}
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if (key === undefined) {
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return iter.end(function(err) {
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if (err)
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return callback(err);
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return callback(null, ids);
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});
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}
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ids.push(key.split('/')[2]);
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next();
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});
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})();
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};
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WalletDB.prototype.test = function test(addresses, callback) {
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var self = this;
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utils.forEachSerial(addresses, function(address, next) {
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self._getIDs(address, function(err, ids) {
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if (err)
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return next(err);
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if (ids.length > 0)
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return callback(null, ids);
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next();
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});
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}, function(err) {
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if (err)
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return callback(err);
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return callback();
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});
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};
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WalletDB.prototype.ownInput = function ownInput(tx, callback) {
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var self = this;
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var addresses;
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if (tx.getAddress) {
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assert(tx instanceof bcoin.input);
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addresses = tx.getAddress();
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if (addresses)
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addresses = [addresses];
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else
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addresses = [];
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} else {
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addresses = tx.getInputAddresses();
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}
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return this.test(addresses, callback);
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};
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WalletDB.prototype.ownOutput = function ownOutput(tx, callback) {
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var self = this;
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var addresses;
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if (tx.getAddress) {
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assert(tx instanceof bcoin.output);
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addresses = tx.getAddress();
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if (addresses)
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addresses = [addresses];
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else
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addresses = [];
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} else {
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addresses = tx.getOutputAddresses();
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}
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return this.test(addresses, callback);
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};
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WalletDB.prototype.ownTX = function ownTX(tx, callback) {
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var self = this;
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return this.ownInput(tx, function(err, input) {
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if (err)
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return callback(err);
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return self.ownOutput(tx, function(err, output) {
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if (err)
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return callback(err);
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if (input || output)
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return callback(null, input, output);
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return callback();
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});
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});
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};
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/**
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* Expose
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*/
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module.exports = WalletDB;
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