142 lines
3.6 KiB
JavaScript
142 lines
3.6 KiB
JavaScript
// JSON-RPC for bitcoind-like interfaces
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const axios = require('axios')
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const uuid = require('uuid')
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const fs = require('fs')
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const _ = require('lodash/fp')
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const request = require('request-promise')
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const { utils: coinUtils } = require('@lamassu/coins')
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const logger = require('../../logger')
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const { isRemoteNode, isRemoteWallet } = require('../../environment-helper')
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const { isEnvironmentValid } = require('../../blockchain/install')
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const BLOCKCHAIN_DIR = process.env.BLOCKCHAIN_DIR
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module.exports = {
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fetch, fetchDigest, parseConf, rpcConfig
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}
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function fetch (account = {}, method, params) {
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params = _.defaultTo([], params)
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return Promise.resolve(true)
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.then(() => {
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const data = {
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method,
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params,
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id: uuid.v4()
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}
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if (_.isNil(account.port)) throw new Error('port attribute required for jsonRpc')
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const url = _.defaultTo(`http://${account.host}:${account.port}`, account.url)
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return axios({
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method: 'post',
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auth: {username: account.username, password: account.password},
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url,
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data
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})
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})
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.then(r => {
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if (r.error) throw r.error
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return r.data.result
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})
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.catch(err => {
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throw new Error(JSON.stringify({
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responseMessage: _.get('message', err),
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message: _.get('response.data.error.message', err),
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code: _.get('response.data.error.code', err)
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}))
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})
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}
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function generateDigestOptions (account = {}, method, params) {
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const headers = {
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'Content-Type': 'application/json'
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}
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const dataString = `{"jsonrpc":"2.0","id":"${uuid.v4()}","method":"${method}","params":${JSON.stringify(params)}}`
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const options = {
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url: `http://localhost:${account.port}/json_rpc`,
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method: 'POST',
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headers,
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body: dataString,
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forever: true,
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auth: {
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user: account.username,
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pass: account.password,
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sendImmediately: false
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}
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}
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return options
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}
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function fetchDigest(account = {}, method, params = []) {
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return Promise.resolve(true)
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.then(() => {
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if (_.isNil(account.port))
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throw new Error('port attribute required for jsonRpc')
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const options = generateDigestOptions(account, method, params)
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return request(options)
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})
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}
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function split (str) {
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const i = str.indexOf('=')
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if (i === -1) return []
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return [str.slice(0, i), str.slice(i + 1)]
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}
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function parseConf (confPath) {
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const conf = fs.readFileSync(confPath)
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const lines = conf.toString().split('\n')
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const res = {}
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for (let i = 0; i < lines.length; i++) {
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const keyVal = split(lines[i])
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// skip when value is empty
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if (!keyVal[1]) continue
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res[keyVal[0]] = keyVal[1]
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}
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return res
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}
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function rpcConfig (cryptoRec) {
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try {
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if (isRemoteWallet(cryptoRec) && isEnvironmentValid(cryptoRec)) {
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return {
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username: process.env[`${cryptoRec.cryptoCode}_NODE_USER`],
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password: process.env[`${cryptoRec.cryptoCode}_NODE_PASSWORD`],
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host: process.env[`${cryptoRec.cryptoCode}_NODE_RPC_HOST`],
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port: process.env[`${cryptoRec.cryptoCode}_NODE_RPC_PORT`]
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}
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}
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const configPath = coinUtils.configPath(cryptoRec, BLOCKCHAIN_DIR)
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const config = parseConf(configPath)
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return {
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username: config.rpcuser,
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password: config.rpcpassword,
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host: 'localhost',
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port: config.rpcport || cryptoRec.defaultPort
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}
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} catch (err) {
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if (!isEnvironmentValid(cryptoRec)) {
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logger.error('Environment is not correctly setup for remote wallet usage!')
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} else {
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logger.error('Wallet is currently not installed!')
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}
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return {
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port: cryptoRec.defaultPort
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}
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}
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}
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