io.github.hapjava.server.impl.pairing.PairingUpdateController Maven / Gradle / Ivy

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Homekit Accessory Protocol for Java

There is a newer version: 2.0.7

package io.github.hapjava.server.impl.pairing;

import io.github.hapjava.server.HomekitAuthInfo;
import io.github.hapjava.server.impl.http.HttpRequest;
import io.github.hapjava.server.impl.http.HttpResponse;
import io.github.hapjava.server.impl.jmdns.JmdnsHomekitAdvertiser;
import io.github.hapjava.server.impl.pairing.TypeLengthValueUtils.DecodeResult;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

public class PairingUpdateController {

  private final HomekitAuthInfo authInfo;
  private final JmdnsHomekitAdvertiser advertiser;

  public PairingUpdateController(HomekitAuthInfo authInfo, JmdnsHomekitAdvertiser advertiser) {
    this.authInfo = authInfo;
    this.advertiser = advertiser;
  }

  public HttpResponse handle(HttpRequest request) throws IOException {
    DecodeResult d = TypeLengthValueUtils.decode(request.getBody());

    int method = d.getByte(MessageType.METHOD);
    if (method == 3) { // Add pairing
      byte[] username = d.getBytes(MessageType.USERNAME);
      byte[] ltpk = d.getBytes(MessageType.PUBLIC_KEY);
      authInfo.createUser(authInfo.getMac() + new String(username, StandardCharsets.UTF_8), ltpk);
    } else if (method == 4) { // Remove pairing
      byte[] username = d.getBytes(MessageType.USERNAME);
      authInfo.removeUser(authInfo.getMac() + new String(username, StandardCharsets.UTF_8));
      if (!authInfo.hasUser()) {
        advertiser.setDiscoverable(true);
      }
    } else {
      throw new RuntimeException("Unrecognized method: " + method);
    }
    return new PairingResponse(new byte[] {0x06, 0x01, 0x02});
  }
}