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| # This workflow uses actions that are not certified by GitHub. | ||
| # They are provided by a third-party and are governed by | ||
| # separate terms of service, privacy policy, and support | ||
| # documentation. | ||
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| name: Scala CI | ||
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| on: | ||
| push: | ||
| branches: [ "master" ] | ||
| pull_request: | ||
| branches: [ "master" ] | ||
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| permissions: | ||
| contents: read | ||
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| jobs: | ||
| build: | ||
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| runs-on: ubuntu-latest | ||
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| steps: | ||
| - uses: actions/checkout@v3 | ||
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| - name: Set up JDK 11 | ||
| uses: actions/setup-java@v3 | ||
| with: | ||
| java-version: 11 | ||
| distribution: 'adopt' | ||
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| - name: Cache Maven dependencies | ||
| uses: actions/cache@v3 | ||
| with: | ||
| path: ~/.m2 | ||
| key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }} | ||
| restore-keys: ${{ runner.os }}-m2 | ||
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| - name: Build Ecalir | ||
| run: git clone https://github.com/ACINQ/eclair.git; cd eclair/; git checkout v0.10.0; mvn install -DskipTests=true | ||
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| - name: Run tests | ||
| run: mvn test |
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129 changes: 129 additions & 0 deletions
129
src/main/scala/io/github/rorp/bolt12addressplugin/OfferFetcher.scala
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| package io.github.rorp.bolt12addressplugin | ||
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| import fr.acinq.eclair.randomBytes | ||
| import fr.acinq.eclair.tor.Socks5ProxyParams | ||
| import fr.acinq.eclair.wire.protocol.OfferTypes.Offer | ||
| import org.minidns.hla.{DnssecResolverApi, ResolverResult} | ||
| import org.minidns.record.TXT | ||
| import sttp.client3.okhttp.OkHttpFutureBackend | ||
| import sttp.client3.{SttpBackend, SttpBackendOptions, UriContext, basicRequest} | ||
| import sttp.model.{HeaderNames, Uri} | ||
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| import java.net.InetSocketAddress | ||
| import scala.concurrent.duration.{Duration, DurationInt, FiniteDuration} | ||
| import scala.concurrent.{Await, ExecutionContext, Future} | ||
| import scala.util.Try | ||
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| trait OfferFetcher { | ||
| def fetchOffer(bolt12Address: Bolt12Address): Future[Offer] | ||
| } | ||
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| object OfferFetcher { | ||
| def create(kind: String, socksProxy_opt: Option[Socks5ProxyParams])(implicit ec: ExecutionContext): Try[OfferFetcher] = Try { | ||
| kind.toLowerCase() match { | ||
| case "dns" => new Dns | ||
| case "doh" => new DnsOverHttps(socksProxy_opt) | ||
| } | ||
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| } | ||
| } | ||
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| class Dns extends OfferFetcher { | ||
| override def fetchOffer(bolt12Address: Bolt12Address): Future[Offer] = { | ||
| Future.fromTry( | ||
| for { | ||
| domainName <- bolt12Address.toDomainName | ||
| dnsResponse <- Try(DnssecResolverApi.INSTANCE.resolve(domainName, classOf[TXT])) | ||
| offerStr <- extractOfferString(dnsResponse) | ||
| offer <- Offer.decode(offerStr) | ||
| } yield offer) | ||
| } | ||
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| private def extractOfferString(resolverResult: ResolverResult[TXT]): Try[String] = Try { | ||
| val answers = resolverResult.getAnswers | ||
| if (answers.isEmpty) throw new RuntimeException("DNS response was empty") | ||
| if (answers.size > 1) throw new RuntimeException("too many DNS records") | ||
| val txt = answers.iterator().next().getText | ||
| if (!txt.startsWith(Bolt12Address.Prefix)) throw new RuntimeException(s"invalid DNS data: `$txt`") | ||
| txt.substring(Bolt12Address.Prefix.length) | ||
| } | ||
| } | ||
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| class DnsOverHttps(socksProxy_opt: Option[Socks5ProxyParams])(implicit ec: ExecutionContext) extends OfferFetcher { | ||
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| val BaseUri: Uri = uri"https://1.1.1.1/dns-query" | ||
| val ReadTimeout: FiniteDuration = 10.seconds | ||
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| private val sttp = createSttpBackend(socksProxy_opt) | ||
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| private def extractOfferString(body: String): Try[String] = Try { | ||
| import io.github.rorp.bolt12addressplugin.DnsOverHttps.DnsResponse | ||
| val serialization = org.json4s.jackson.Serialization | ||
| implicit val formats = org.json4s.DefaultFormats | ||
| val json = serialization.read[DnsResponse](body) | ||
| val txt = { | ||
| val data = json.Answer.headOption.getOrElse(throw new RuntimeException(s"invalid DNS response: $json")).data | ||
| val data1 = if (data.startsWith("\"")) data.tail else data | ||
| if (data1.endsWith("\"")) data1.init else data1 | ||
| } | ||
| if (!txt.startsWith(Bolt12Address.Prefix)) throw new RuntimeException(s"invalid DNS data: `$txt`") | ||
| txt.substring(Bolt12Address.Prefix.length) | ||
| } | ||
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| override def fetchOffer(bolt12Address: Bolt12Address): Future[Offer] = { | ||
| val parametrizedUri = BaseUri.addParam("name", bolt12Address.toDomainName.get).addParam("type", "TXT") | ||
| val request = basicRequest | ||
| .header(HeaderNames.Accept, "application/dns-json", replaceExisting = true) | ||
| .readTimeout(ReadTimeout).get(parametrizedUri) | ||
| for { | ||
| response <- sttp.send(request) | ||
| } yield { | ||
| if (!response.code.isSuccess) throw new RuntimeException(s"Error performing DNS query: status code ${response.code}") | ||
| val body = response.body.getOrElse(throw new RuntimeException(s"Error performing DNS query: invalid body ${response.body}")) | ||
| val offer = extractOfferString(body).flatMap(Offer.decode) | ||
| offer.get | ||
| } | ||
| } | ||
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| private def createSttpBackend(socksProxy_opt: Option[Socks5ProxyParams]): SttpBackend[Future, _] = { | ||
| val options = SttpBackendOptions(connectionTimeout = 30.seconds, proxy = None) | ||
| val sttpBackendOptions: SttpBackendOptions = socksProxy_opt match { | ||
| case Some(proxy) => | ||
| val proxyOptions = options.connectionTimeout(120.seconds) | ||
| val host = proxy.address.getHostString | ||
| val port = proxy.address.getPort | ||
| if (proxy.randomizeCredentials) | ||
| proxyOptions.socksProxy(host, port, username = randomBytes(16).toHex, password = randomBytes(16).toHex) | ||
| else | ||
| proxyOptions.socksProxy(host, port) | ||
| case _ => options | ||
| } | ||
| OkHttpFutureBackend(sttpBackendOptions) | ||
| } | ||
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| } | ||
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| object DnsOverHttps { | ||
| case class DnsRecord(name: String, `type`: Int, TTL: Int, data: String) | ||
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| case class DnsResponse(Answer: Seq[DnsRecord]) | ||
| } | ||
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| object Main { | ||
| def main(args: Array[String]): Unit = { | ||
| import scala.concurrent.ExecutionContext.Implicits.global | ||
| println(Await.result(new DnsOverHttps(Some(Socks5ProxyParams( | ||
| address = InetSocketAddress.createUnresolved("localhost", 9050), | ||
| credentials_opt = None, | ||
| randomizeCredentials = true, | ||
| useForIPv4 = true, | ||
| useForIPv6 = true, | ||
| useForTor = true, | ||
| useForWatchdogs = true, | ||
| useForDnsHostnames = true | ||
| ))).fetchOffer(Bolt12Address("satoshi@twelve.cash")), Duration.Inf)) | ||
| } | ||
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| } |
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