gcc/libjava/java/net/natNetworkInterface.cc
Adam Megacz e662e109a1 natNetworkInterface.cc (getRealNetworkInterfaces): ifdef out some functionality that isn't supported yet on WIN32.
2002-10-03  Adam Megacz <adam@xwt.org>

	    * natNetworkInterface.cc (getRealNetworkInterfaces): ifdef out
	    some functionality that isn't supported yet on WIN32.

From-SVN: r57794
2002-10-03 22:54:04 +00:00

146 lines
3.3 KiB
C++

// natNetworkInterface.cc
/* Copyright (C) 2002 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>
#ifdef WIN32
#include <windows.h>
#include <winsock.h>
#undef STRICT
#else /* WIN32 */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/param.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#define BSD_COMP /* Get FIONREAD on Solaris2. */
#include <sys/ioctl.h>
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
#endif
#endif /* WIN32 */
#include <gcj/cni.h>
#include <jvm.h>
#include <java/net/NetworkInterface.h>
#include <java/net/InetAddress.h>
#include <java/net/SocketException.h>
#include <java/util/Vector.h>
#ifdef DISABLE_JAVA_NET
::java::util::Vector*
java::net::NetworkInterface::getRealNetworkInterfaces ()
{
::java::util::Vector* ht = new ::java::util::Vector();
return ht;
}
#else /* DISABLE_JAVA_NET */
::java::util::Vector*
java::net::NetworkInterface::getRealNetworkInterfaces ()
{
#ifdef WIN32
throw new ::java::net::SocketException;
#else
int fd;
int num_interfaces = 0;
struct ifconf if_data;
struct ifreq* if_record;
::java::util::Vector* ht = new ::java::util::Vector ();
if_data.ifc_len = 0;
if_data.ifc_buf = NULL;
// Open a (random) socket to have a file descriptor for the ioctl calls.
fd = ::socket (PF_INET, SOCK_DGRAM, htons (IPPROTO_IP));
if (fd < 0)
throw new ::java::net::SocketException;
// Get all interfaces. If not enough buffers are available try it
// with a bigger buffer size.
do
{
num_interfaces += 16;
if_data.ifc_len = sizeof (struct ifreq) * num_interfaces;
if_data.ifc_buf =
(char*) _Jv_Realloc (if_data.ifc_buf, if_data.ifc_len);
// Try to get all local interfaces.
if (::ioctl (fd, SIOCGIFCONF, &if_data) < 0)
throw new java::net::SocketException;
}
while (if_data.ifc_len >= (sizeof (struct ifreq) * num_interfaces));
// Get addresses of all interfaces.
if_record = if_data.ifc_req;
for (int n = 0; n < if_data.ifc_len; n += sizeof (struct ifreq))
{
struct ifreq ifr;
memset (&ifr, 0, sizeof (ifr));
strcpy (ifr.ifr_name, if_record->ifr_name);
// Try to get the IPv4-address of the local interface
if (::ioctl (fd, SIOCGIFADDR, &ifr) < 0)
throw new java::net::SocketException;
int len = 4;
struct sockaddr_in sa = *((sockaddr_in*) &(ifr.ifr_addr));
jbyteArray baddr = JvNewByteArray (len);
memcpy (elements (baddr), &(sa.sin_addr), len);
jstring if_name = JvNewStringLatin1 (if_record->ifr_name);
InetAddress* address =
new java::net::InetAddress (baddr, JvNewStringLatin1 (""));
ht->add (new NetworkInterface (if_name, address));
if_record++;
}
#ifdef HAVE_INET6
// FIXME: read /proc/net/if_inet6 (on Linux 2.4)
#endif
_Jv_Free (if_data.ifc_buf);
if (fd >= 0)
::close (fd);
return ht;
#endif /* WIN32 */
}
#endif // DISABLE_JAVA_NET //