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import { pathExists, writeFile } from 'fs-extra'
import maxmind, { CountryResponse, Reader } from 'maxmind'
import { join } from 'path'
import { CONFIG } from '@server/initializers/config'
import { logger, loggerTagsFactory } from './logger'
import { isBinaryResponse, peertubeGot } from './requests'
const lTags = loggerTagsFactory('geo-ip')
const mmbdFilename = 'dbip-country-lite-latest.mmdb'
const mmdbPath = join(CONFIG.STORAGE.BIN_DIR, mmbdFilename)
export class GeoIP {
private static instance: GeoIP
private reader: Reader<CountryResponse>
private constructor () {
}
async safeCountryISOLookup (ip: string): Promise<string> {
if (CONFIG.GEO_IP.ENABLED === false) return null
await this.initReaderIfNeeded()
try {
const result = this.reader.get(ip)
if (!result) return null
return result.country.iso_code
} catch (err) {
logger.error('Cannot get country from IP.', { err })
return null
}
}
async updateDatabase () {
if (CONFIG.GEO_IP.ENABLED === false) return
const url = CONFIG.GEO_IP.COUNTRY.DATABASE_URL
logger.info('Updating GeoIP database from %s.', url, lTags())
const gotOptions = { context: { bodyKBLimit: 200_000 }, responseType: 'buffer' as 'buffer' }
try {
const gotResult = await peertubeGot(url, gotOptions)
if (!isBinaryResponse(gotResult)) {
throw new Error('Not a binary response')
}
await writeFile(mmdbPath, gotResult.body)
// Reini reader
this.reader = undefined
logger.info('GeoIP database updated %s.', mmdbPath, lTags())
} catch (err) {
logger.error('Cannot update GeoIP database from %s.', url, { err, ...lTags() })
}
}
private async initReaderIfNeeded () {
if (!this.reader) {
if (!await pathExists(mmdbPath)) {
await this.updateDatabase()
}
this.reader = await maxmind.open(mmdbPath)
}
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
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