114 lines
2.2 KiB
JavaScript
114 lines
2.2 KiB
JavaScript
/*!
|
|
* client.js - http client for wallets
|
|
* Copyright (c) 2014-2015, Fedor Indutny (MIT License)
|
|
* Copyright (c) 2014-2017, Christopher Jeffrey (MIT License).
|
|
* https://github.com/bcoin-org/bcoin
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
const assert = require('assert');
|
|
const {NodeClient} = require('bclient');
|
|
const TX = require('../primitives/tx');
|
|
const hash256 = require('bcrypto/lib/hash256');
|
|
const encoding = require('bufio/lib/encoding');
|
|
|
|
const parsers = {
|
|
'block connect': (entry, txs) => parseBlock(entry, txs),
|
|
'block disconnect': entry => [parseEntry(entry)],
|
|
'block rescan': (entry, txs) => parseBlock(entry, txs),
|
|
'chain reset': entry => [parseEntry(entry)],
|
|
'tx': tx => [TX.fromRaw(tx)]
|
|
};
|
|
|
|
class WalletClient extends NodeClient {
|
|
constructor(options) {
|
|
super(options);
|
|
}
|
|
|
|
bind(event, handler) {
|
|
const parser = parsers[event];
|
|
|
|
if (!parser) {
|
|
super.bind(event, handler);
|
|
return;
|
|
}
|
|
|
|
super.bind(event, (...args) => {
|
|
return handler(...parser(...args));
|
|
});
|
|
}
|
|
|
|
hook(event, handler) {
|
|
const parser = parsers[event];
|
|
|
|
if (!parser) {
|
|
super.hook(event, handler);
|
|
return;
|
|
}
|
|
|
|
super.hook(event, (...args) => {
|
|
return handler(...parser(...args));
|
|
});
|
|
}
|
|
|
|
async getTip() {
|
|
return parseEntry(await super.getTip());
|
|
}
|
|
|
|
async getEntry(block) {
|
|
if (typeof block === 'string')
|
|
block = encoding.revHex(block);
|
|
|
|
return parseEntry(await super.getEntry(block));
|
|
}
|
|
|
|
async send(tx) {
|
|
return super.send(tx.toRaw());
|
|
}
|
|
|
|
async setFilter(filter) {
|
|
return super.setFilter(filter.toRaw());
|
|
}
|
|
|
|
async rescan(start) {
|
|
if (typeof start === 'string')
|
|
start = encoding.revHex(start);
|
|
|
|
return super.rescan(start);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Helpers
|
|
*/
|
|
|
|
function parseEntry(data) {
|
|
assert(Buffer.isBuffer(data));
|
|
assert(data.length >= 84);
|
|
|
|
const h = hash256.digest(data.slice(0, 80));
|
|
|
|
return {
|
|
hash: h.toString('hex'),
|
|
height: data.readUInt32LE(80, true),
|
|
time: data.readUInt32LE(68, true)
|
|
};
|
|
}
|
|
|
|
function parseBlock(entry, txs) {
|
|
const block = parseEntry(entry);
|
|
const out = [];
|
|
|
|
for (const tx of txs)
|
|
out.push(TX.fromRaw(tx));
|
|
|
|
return [block, out];
|
|
}
|
|
|
|
/*
|
|
* Expose
|
|
*/
|
|
|
|
module.exports = WalletClient;
|