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import express from 'express'
import bodyParser from 'body-parser'
import logger from 'winston'
import { SubdomainServer } from './server'
import { createMiddleware as createPrometheusMiddleware } from '@promster/express'
import { createServer } from '@promster/server'
const HEADERS = { 'Content-Type': 'application/json' }
export function makeHTTPServer(config) {
const app = express()
const server = new SubdomainServer(config)
if (config.prometheus && config.prometheus.start && config.prometheus.port) {
app.use(
createPrometheusMiddleware({
app,
options: {
normalizePath: (path) => {
if (path.startsWith('/v1/names')) {
return '/v1/names'
}
if (path.startsWith('/status')) {
return '/status'
}
if (path.startsWith('/v1/names')) {
return '/list'
}
return path
}
}
})
)
const port = config.prometheus.port
// Create `/metrics` endpoint on separate server
createServer({ port }).then(() =>
console.log(`@promster/server started on port ${port}.`)
)
}
app.use(cors())
app.use(bodyParser.json())
app.get('/index', (req, res) => {
res.writeHead(200, HEADERS)
res.write(
JSON.stringify({
status: true,
domainName: config.domainName
})
)
res.end()
})
app.post('/register', (req, res) => {
const requestJSON = req.body
if (!requestJSON) {
res.writeHead(400, HEADERS)
res.write(
JSON.stringify({
status: false,
message: 'Failed to parse your registration request: expected JSON'
})
)
res.end()
return
}
// note: x-real-ip is *only* trust-worthy when running behind a
// proxy that the registrar controls!
const ipAddress = req.headers['x-real-ip'] || req.connection.remoteAddress
const authorization = req.headers.authorization || ''
server
.queueRegistration(
requestJSON.name,
requestJSON.owner_address,
0,
requestJSON.zonefile,
ipAddress,
authorization
)
.then(() => {
res.writeHead(202, HEADERS)
res.write(
JSON.stringify({
status: true,
message:
'Your subdomain registration was received, and will ' +
'be included in the blockchain soon.'
})
)
res.end()
})
.catch((err) => {
logger.error(err)
let message =
'Failed to validate your registration request. ' + err.message
let code = 409
if (err.message.startsWith('Proof')) {
message = err.message
}
if (err.message.startsWith('NameLength:')) {
code = 400
}
res.writeHead(code, HEADERS)
res.write(
JSON.stringify({
status: false,
message
})
)
res.end()
})
})
app.post('/transfer', (req, res) => {
const requestJSON = req.body
if (!requestJSON) {
res.writeHead(400, HEADERS)
res.write(
JSON.stringify({
status: false,
message: 'Failed to parse your transfer request: expected JSON'
})
)
res.end()
return
}
// note: x-real-ip is *only* trust-worthy when running behind a
// proxy that the registrar controls!
const ipAddress = req.headers['x-real-ip'] || req.connection.remoteAddress
const authorization = req.headers.authorization || ''
const subdomainsList = requestJSON.subdomains_list
if (!subdomainsList || !Array.isArray(subdomainsList)) {
res.writeHead(400, HEADERS)
res.write(
JSON.stringify({
status: false,
message: 'Failed to get subdomains_list'
})
)
res.end()
return
}
//verify array has valid objects
for(let i=0; i< subdomainsList.length; i++){
if(!subdomainsList[i].subdomainName || !subdomainsList[i].owner || !subdomainsList[i].signature){
res.writeHead(400, HEADERS)
res.write(
JSON.stringify({
status: false,
message: 'Failed to get subdomains detail'
})
)
res.end()
return
}
}
const reqestedSubdomains = subdomainsList.map((subdomain) => {
return {
subdomainName: subdomain.subdomainName,
new_owner: subdomain.owner,
signature: subdomain.signature
}
})
server
.transferSubdomain(reqestedSubdomains, ipAddress, authorization)
.then((txHash) => {
res.writeHead(202, HEADERS)
res.write(
JSON.stringify({
status: true,
message: `Your subdomains transfer was received, and will
be included in the blockchain soon with txId: ${txHash}`
})
)
res.end()
})
.catch((err) => {
logger.error(err)
const message =
'Failed to validate your transfer request: ' + err.message
let code = 400
if (err.message.includes('not found')) {
code = 404
}
res.writeHead(code, HEADERS)
res.write(
JSON.stringify({
status: false,
message
})
)
res.end()
})
})
app.post('/issue_batch/', (req, res) => {
const authHeader = req.headers.authorization
if (!authHeader || authHeader !== `bearer ${config.adminPassword}`) {
res.writeHead(401, HEADERS)
res.write(
JSON.stringify({
status: false,
message: 'Unauthorized'
})
)
res.end()
} else {
server
.submitBatch()
.catch(() => logger.error('Failed to broadcast batch.'))
res.writeHead(202, HEADERS)
res.write(
JSON.stringify({
status: true,
message: 'Starting batch.'
})
)
res.end()
}
})
app.post('/check_zonefiles/', (req, res) => {
const authHeader = req.headers.authorization
if (!authHeader || authHeader !== `bearer ${config.adminPassword}`) {
res.writeHead(401, HEADERS)
res.write(
JSON.stringify({
status: false,
message: 'Unauthorized'
})
)
res.end()
} else {
server
.checkZonefiles()
.catch(() => logger.error('Failed to check our zonefiles.'))
res.writeHead(202, HEADERS)
res.write(
JSON.stringify({
status: true,
message: 'Checking zonefiles.'
})
)
res.end()
}
})
app.get('/status/:subdomain', (req, res) => {
server
.getSubdomainStatus(req.params.subdomain)
.then((status) => {
if (status.statusCode) {
res.writeHead(status.statusCode, HEADERS)
} else {
res.writeHead(200, HEADERS)
}
res.write(JSON.stringify(status))
res.end()
})
.catch(() => {
res.writeHead(501, HEADERS)
res.write(
JSON.stringify({
status: false,
message: 'There was an error processing your request.'
})
)
res.end()
})
})
app.get('/v1/names/:fullyQualified', (req, res) => {
server
.getSubdomainInfo(req.params.fullyQualified)
.catch((error) => {
logger.error(error)
return {
message: {
error: 'Error processing request',
status: false
},
statusCode: 400
}
})
.then((infoResponse) => {
res.writeHead(infoResponse.statusCode, HEADERS)
res.write(JSON.stringify(infoResponse.message))
res.end()
})
})
app.get('/list/:iterator', (req, res) => {
// iterator must be a reasonably-sized finite positive integer
return Promise.resolve()
.then(() => {
const iterator = req.params.iterator
if (!iterator.match(/^[0-9]{1,10}$/)) {
logger.warn(
'List iteratotr must be a reasonably-sized positive integer'
)
return {
message: {
error: 'Iterator must be a reasonably-sized positive integer'
},
statusCode: 400
}
}
return server.listSubdomainRecords(parseInt(iterator))
})
.catch((e) => {
logger.error(e)
return {
message: {
error: 'Error processing request',
status: false
},
statusCode: 400
}
})
.then((response) => {
res.writeHead(response.statusCode, HEADERS)
res.write(JSON.stringify(response.message))
res.end()
})
})
const zonefileDelay = Math.min(
2147483647,
Math.floor(60000 * config.checkTransactionPeriod)
)
const batchDelay = Math.min(
2147483647,
Math.floor(60000 * config.batchDelayPeriod)
)
return server
.initializeServer()
.then(() => {
// schedule timers
setInterval(() => {
logger.debug('Waking up to broadcast a batch (UPDATE tx).')
server
.submitBatch()
.catch(() => logger.error('Failed to broadcast batch.'))
}, batchDelay)
setInterval(() => {
logger.debug('Waking up to check transaction statuses.')
server
.checkZonefiles()
.catch(() =>
logger.error('Failed to check zonefile transaction status.')
)
}, zonefileDelay)
})
.then(() => app)
}
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