class="kw">package com.hypixel.hytale.lib.quiche;

class="kw">import java.lang.foreign.MemorySegment;
class="kw">import java.lang.foreign.ValueLayout;
class="kw">import java.lang.foreign.ValueLayout.OfShort;
class="kw">import java.net.Inet6Address;
class="kw">import java.net.InetAddress;
class="kw">import java.net.InetSocketAddress;
class="kw">import java.net.UnknownHostException;
class="kw">import java.nio.ByteOrder;
class="kw">import javax.annotation.Nonnull;

class="kw">public class QuicheUtil {
   class="kw">private class="kw">static class="kw">final OfShort NET_SHORT = ValueLayout.JAVA_SHORT_UNALIGNED.withOrder(ByteOrder.BIG_ENDIAN);
   class="kw">private class="kw">static class="kw">final int AF_INET = 2;
   class="kw">private class="kw">static class="kw">final int AF_INET6;

   class="kw">public QuicheUtil() {
   }

   class="kw">public class="kw">static int toSocketAddrStorage(@Nonnull MemorySegment var0, @Nonnull InetSocketAddress var1) {
      byte[] var2 = var1.getAddress().getAddress();
      int var3;
      int var4;
      if (var1.getAddress() class="kw">instanceof Inet6Address) {
         QuicheNative.setSockaddrStorageFamily(var0, AF_INET6);
         var3 = 28;
         var4 = 6;
         var0.set(ValueLayout.JAVA_INT_UNALIGNED, QuicheNative.SOCKADDR_STORAGE_DATA_OFFSET + 2L, 0);
      } else {
         QuicheNative.setSockaddrStorageFamily(var0, 2);
         var3 = 16;
         var4 = 2;
      }

      QuicheNative.setSockaddrLen(var0, (byte)var3);
      var0.set(NET_SHORT, QuicheNative.SOCKADDR_STORAGE_DATA_OFFSET, (short)var1.getPort());
      MemorySegment.copy(var2, 0, var0, ValueLayout.JAVA_BYTE, QuicheNative.SOCKADDR_STORAGE_DATA_OFFSET + var4, var2.length);
      class="kw">return var3;
   }

   class="kw">public class="kw">static InetSocketAddress fromSocketAddr(@Nonnull MemorySegment var0, int var1) {
      int var2 = QuicheNative.getSockaddrStorageFamily(var0);
      int var3 = Short.toUnsignedInt(var0.get(NET_SHORT, QuicheNative.SOCKADDR_STORAGE_DATA_OFFSET));
      byte[] var4;
      if (var2 == 2) {
         var4 = new byte[4];
         MemorySegment.copy(var0, ValueLayout.JAVA_BYTE, QuicheNative.SOCKADDR_STORAGE_DATA_OFFSET + 2L, var4, 0, 4);
      } else {
         if (var2 != AF_INET6) {
            throw new IllegalArgumentException("Unknown address family: " + var2);
         }

         var4 = new byte[16];
         MemorySegment.copy(var0, ValueLayout.JAVA_BYTE, QuicheNative.SOCKADDR_STORAGE_DATA_OFFSET + 6L, var4, 0, 16);
      }

      try {
         InetAddress var5 = InetAddress.getByAddress(var4);
         if (var5 class="kw">instanceof Inet6Address && isIPv4Mapped(var4)) {
            var5 = InetAddress.getByAddress(new byte[]{var4[12], var4[13], var4[14], var4[15]});
         }

         class="kw">return new InetSocketAddress(var5, var3);
      } catch (UnknownHostException var6) {
         throw new IllegalArgumentException("Invalid address bytes", var6);
      }
   }

   class="kw">private class="kw">static boolean isIPv4Mapped(byte[] var0) {
      if (var0.length != 16) {
         class="kw">return false;
      }

      for (int var1 = 0; var1 < 10; var1++) {
         if (var0[var1] != 0) {
            class="kw">return false;
         }
      }

      class="kw">return var0[10] == -1 && var0[11] == -1;
   }

   class="kw">static {
      AF_INET6 = class="kw">switch (QuicheNative.PLATFORM) {
         case LINUX -> 10;
         case MACOS -> 30;
         case WINDOWS -> 23;
      };
   }
}