lamassu-server/lib/blockchain/common.js
2021-10-04 07:31:17 +01:00

123 lines
3.1 KiB
JavaScript

const crypto = require('crypto')
const os = require('os')
const path = require('path')
const cp = require('child_process')
const fs = require('fs')
const _ = require('lodash/fp')
const logger = require('console-log-level')({level: 'info'})
module.exports = {
es,
writeSupervisorConfig,
firewall,
randomPass,
fetchAndInstall,
logger,
isInstalledSoftware,
writeFile
}
const BINARIES = {
BTC: {
url: 'https://bitcoincore.org/bin/bitcoin-core-0.20.1/bitcoin-0.20.1-x86_64-linux-gnu.tar.gz',
dir: 'bitcoin-0.20.1/bin'
},
ETH: {
url: 'https://gethstore.blob.core.windows.net/builds/geth-linux-amd64-1.10.6-576681f2.tar.gz',
dir: 'geth-linux-amd64-1.10.6-576681f2'
},
ZEC: {
url: 'https://z.cash/downloads/zcash-4.4.1-linux64-debian-stretch.tar.gz',
dir: 'zcash-4.4.1/bin'
},
DASH: {
url: 'https://github.com/dashpay/dash/releases/download/v0.17.0.3/dashcore-0.17.0.3-x86_64-linux-gnu.tar.gz',
dir: 'dashcore-0.17.0/bin'
},
LTC: {
url: 'https://download.litecoin.org/litecoin-0.18.1/linux/litecoin-0.18.1-x86_64-linux-gnu.tar.gz',
dir: 'litecoin-0.18.1/bin'
},
BCH: {
url: 'https://github.com/bitcoin-cash-node/bitcoin-cash-node/releases/download/v23.0.0/bitcoin-cash-node-23.0.0-x86_64-linux-gnu.tar.gz',
dir: 'bitcoin-cash-node-23.0.0/bin',
files: [['bitcoind', 'bitcoincashd'], ['bitcoin-cli', 'bitcoincash-cli']]
}
}
function firewall (ports) {
if (!ports || ports.length === 0) throw new Error('No ports supplied')
const portsString = ports.join(',')
es(`sudo ufw allow ${portsString}`)
}
function randomPass () {
return crypto.randomBytes(32).toString('hex')
}
function es (cmd) {
const env = {HOME: os.userInfo().homedir}
const options = {encoding: 'utf8', env}
const res = cp.execSync(cmd, options)
logger.debug(res)
return res.toString()
}
function writeSupervisorConfig (coinRec, cmd) {
if (isInstalledSoftware(coinRec)) return
const blockchain = coinRec.code
const supervisorConfig = `[program:${blockchain}]
command=nice ${cmd}
autostart=true
autorestart=true
stderr_logfile=/var/log/supervisor/${blockchain}.err.log
stdout_logfile=/var/log/supervisor/${blockchain}.out.log
environment=HOME="/root"
`
writeFile(`/etc/supervisor/conf.d/${coinRec.code}.conf`, supervisorConfig)
}
function isInstalledSoftware (coinRec) {
return fs.existsSync(`/etc/supervisor/conf.d/${coinRec.code}.conf`)
}
function fetchAndInstall (coinRec) {
if (isInstalledSoftware(coinRec)) return
const binaries = BINARIES[coinRec.cryptoCode]
if (!binaries) throw new Error(`No such coin: ${coinRec.code}`)
const url = binaries.url
const downloadFile = path.basename(url)
const binDir = binaries.dir
es(`wget -q ${url}`)
es(`tar -xzf ${downloadFile}`)
if (_.isEmpty(binaries.files)) {
es(`sudo cp ${binDir}/* /usr/local/bin`)
return
}
_.forEach(([source, target]) => {
es(`sudo cp ${binDir}/${source} /usr/local/bin/${target}`)
}, binaries.files)
}
function writeFile (path, content) {
try {
fs.writeFileSync(path, content)
} catch (err) {
if (err.code === 'EEXIST') {
logger.info(`${path} exists, skipping.`)
return
}
throw err
}
}