content: /*
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
   ~                                                                               ~
   ~ The MIT License (MIT)                                                         ~
   ~                                                                               ~
   ~ Copyright (c) 2015-2025 miaixz.org OSHI and other contributors.               ~
   ~                                                                               ~
   ~ Permission is hereby granted, free of charge, to any person obtaining a copy  ~
   ~ of this software and associated documentation files (the "Software"), to deal ~
   ~ in the Software without restriction, including without limitation the rights  ~
   ~ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell     ~
   ~ copies of the Software, and to permit persons to whom the Software is         ~
   ~ furnished to do so, subject to the following conditions:                      ~
   ~                                                                               ~
   ~ The above copyright notice and this permission notice shall be included in    ~
   ~ all copies or substantial portions of the Software.                           ~
   ~                                                                               ~
   ~ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    ~
   ~ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      ~
   ~ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   ~
   ~ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        ~
   ~ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, ~
   ~ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN     ~
   ~ THE SOFTWARE.                                                                 ~
   ~                                                                               ~
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
  */
  package org.miaixz.bus.health.mac.software;
  
  import java.net.InetAddress;
  import java.net.UnknownHostException;
  import java.util.List;
  
  import org.miaixz.bus.core.center.regex.Pattern;
  import org.miaixz.bus.core.lang.Normal;
  import org.miaixz.bus.core.lang.Symbol;
  import org.miaixz.bus.core.lang.annotation.ThreadSafe;
  import org.miaixz.bus.health.Executor;
  import org.miaixz.bus.health.builtin.jna.ByRef;
  import org.miaixz.bus.health.builtin.software.common.AbstractNetworkParams;
  import org.miaixz.bus.health.mac.jna.SystemB;
  import org.miaixz.bus.health.unix.jna.CLibrary;
  import org.miaixz.bus.logger.Logger;
  
  import com.sun.jna.Native;
  import com.sun.jna.platform.unix.LibCAPI;
  
  /**
   * MacNetworkParams class.
   *
   * @author Kimi Liu
   * @since Java 17+
   */
  @ThreadSafe
  final class MacNetworkParams extends AbstractNetworkParams {
  
      private static final SystemB SYS = SystemB.INSTANCE;
  
      private static final String IPV6_ROUTE_HEADER = "Internet6:";
  
      private static final String DEFAULT_GATEWAY = "default";
  
      @Override
      public String getDomainName() {
          String hostname;
          try {
              hostname = InetAddress.getLocalHost().getHostName();
              if (hostname == null || hostname.isEmpty()) {
                  Logger.debug("Could not determine hostname");
                  return Normal.EMPTY;
              }
          } catch (UnknownHostException e) {
              Logger.debug("Unknown host exception when getting address of local host: {}", e.getMessage());
              return Normal.EMPTY;
          }
          try (CLibrary.Addrinfo hint = new CLibrary.Addrinfo();
                  ByRef.CloseablePointerByReference ptr = new ByRef.CloseablePointerByReference()) {
              hint.ai_flags = CLibrary.AI_CANONNAME;
              int res = SYS.getaddrinfo(hostname, null, hint, ptr);
              if (res != 0) {
                  if (Logger.isDebugEnabled()) {
                      Logger.debug("Failed getaddrinfo(): {}", SYS.gai_strerror(res));
                  }
                  return Normal.EMPTY;
              }
              try (CLibrary.Addrinfo info = new CLibrary.Addrinfo(ptr.getValue())) {
                  String canonname = info.ai_canonname.trim();
                  SYS.freeaddrinfo(ptr.getValue());
                  return canonname;
              }
          }
      }
  
      @Override
      public String getHostName() {
          byte[] hostnameBuffer = new byte[LibCAPI.HOST_NAME_MAX + 1];
          if (0 != SYS.gethostname(hostnameBuffer, hostnameBuffer.length)) {
              return super.getHostName();
          }
          return Native.toString(hostnameBuffer);
      }
  
      @Override
      public String getIpv4DefaultGateway() {
          return searchGateway(Executor.runNative("route -n get default"));
      }
  
      @Override
      public String getIpv6DefaultGateway() {
          List<String> lines = Executor.runNative("netstat -nr");
          boolean v6Table = false;
          for (String line : lines) {
              if (v6Table && line.startsWith(DEFAULT_GATEWAY)) {
                  String[] fields = Pattern.SPACES_PATTERN.split(line);
                  if (fields.length > 2 && fields[2].contains("G")) {
                      return fields[1].split(Symbol.PERCENT)[0];
                  }
              } else if (line.startsWith(IPV6_ROUTE_HEADER)) {
                  v6Table = true;
              }
          }
          return Normal.EMPTY;
      }
  
  }
  