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/* Copyright (C) 2003, 2006 Free Software Foundation

   This file is part of libgcj.

This software is copyrighted work licensed under the terms of the

Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for

details.  */

#include <config.h>

#include <platform.h>

#undef STRICT

#include <java/net/VMInetAddress.h>

#include <java/net/UnknownHostException.h>

jstring

java::net::VMInetAddress::getLocalHostname ()

{

  char buffer[400];

  if (gethostname (buffer, sizeof(buffer)))

    return NULL;

  // It is admittedly non-optimal to convert the hostname to Unicode

  // only to convert it back in getByName, but simplicity wins.

  return JvNewStringUTF (buffer);

}

jbyteArray

java::net::VMInetAddress::lookupInaddrAny ()

{

  unsigned long laddr = INADDR_ANY;

  char *bytes = (char *) &laddr;

  int blen = sizeof (laddr);

  jbyteArray result = JvNewByteArray (blen);

  memcpy (elements (result), bytes, blen);

  return result;

}

jstring

java::net::VMInetAddress::getHostByAddr (jbyteArray addr)

{

  struct hostent *hptr = NULL;

  char *bytes = (char*) elements (addr);

  int len = addr->length;

  int type;

  char *val;

  if (len == 4)

    {

      val = bytes;

      type = AF_INET;

    }

#ifdef HAVE_INET6

  else if (len == 16)

    {

      val = (char *) &bytes;

      type = AF_INET6;

    }

#endif /* HAVE_INET6 */

  else

    JvFail ("unrecognized size");

  // FIXME: this is insufficient if some other piece of code calls

  // this gethostbyaddr.

  JvSynchronize sync (&java::net::VMInetAddress::class$);

  hptr = gethostbyaddr (val, len, type);

  if (hptr == NULL)

    throw new java::net::UnknownHostException ();

  return JvNewStringUTF (hptr->h_name);

}

JArray<jbyteArray> *

java::net::VMInetAddress::getHostByName (jstring host)

{

  struct hostent *hptr = NULL;

  JV_TEMP_UTF_STRING (hostname, host);

  // FIXME: this is insufficient if some other piece of code calls

  // this gethostbyname.

  JvSynchronize sync (&java::net::VMInetAddress::class$);

  hptr = gethostbyname (hostname);

  if (hptr == NULL)

    throw new java::net::UnknownHostException (host);

  int count = 0;

  char ** ptr = hptr->h_addr_list;

  while (*ptr++)  count++;

  JArray<jbyteArray> *result =

    (JArray<jbyteArray> *) _Jv_NewObjectArray (

      count, _Jv_GetArrayClass(JvPrimClass(byte), NULL), NULL);

  jbyteArray* addrs = elements (result);

  for (int i = 0; i < count; i++)

    {

      addrs[i] = JvNewByteArray (hptr->h_length);

      memcpy (elements (addrs[i]), hptr->h_addr_list[i], hptr->h_length);

    }

  return result;

}

jbyteArray

java::net::VMInetAddress::aton (jstring host)

{

  JV_TEMP_UTF_STRING (hostname, host);

  char* bytes = NULL;

  int blen = 0;

  unsigned long laddr = inet_addr (hostname);

  if (laddr != INADDR_NONE)

    {

      bytes = (char *) &laddr;

      blen = 4;

    }

  if (blen == 0)

    return NULL;

  jbyteArray result = JvNewByteArray (blen);

  memcpy (elements (result), bytes, blen);

  return result;

}