InetAddress.java: Mostly merged with Classpath.

2006-09-20  Gary Benson  <gbenson@redhat.com>

	* java/net/InetAddress.java: Mostly merged with Classpath.
	* java/net/VMInetAddress.java: New file.
	* sources.am, Makefile.in: Rebuilt.

	* java/net/natVMNetworkInterfacePosix.cc
	(getInterfaces): Create InetAddress objects using
	InetAddress.getByAddress.
	* gnu/java/net/natPlainSocketImplPosix.cc
	(accept, getOption): Likewise.
	* gnu/java/net/natPlainDatagramSocketImplPosix.cc
	(peekData, receive, getLocalAddress): Likewise.

From-SVN: r117075

libjava/java/net/VMInetAddress.java

@@ -0,0 +1,117 @@
+/* VMInetAddress.java -- Class to model an Internet address
+   Copyright (C) 2005  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.net;
+
+import gnu.classpath.Configuration;
+
+import java.io.Serializable;
+
+class VMInetAddress implements Serializable
+{
+  static
+  {
+    if (Configuration.INIT_LOAD_LIBRARY)
+      System.loadLibrary("javanet");
+  }
+
+  /**
+   * This method looks up the hostname of the local machine
+   * we are on.  If the actual hostname cannot be determined, then the
+   * value "localhost" will be used.  This native method wrappers the
+   * "gethostname" function.
+   *
+   * @return The local hostname.
+   */
+  public static String getLocalHostname()
+  {
+    return InetAddress.getLocalHostname();
+  }
+
+  /**
+   * Returns the value of the special address INADDR_ANY
+   */
+  public static byte[] lookupInaddrAny() throws UnknownHostException
+  {
+    return new byte[] {0, 0, 0, 0};
+  }
+
+  /**
+   * This method returns the hostname for a given IP address.  It will
+   * throw an UnknownHostException if the hostname cannot be determined.
+   *
+   * @param ip The IP address as a byte array
+   *
+   * @return The hostname
+   *
+   * @exception UnknownHostException If the reverse lookup fails
+   */
+  public static String getHostByAddr(byte[] ip) throws UnknownHostException
+  {
+    InetAddress addr = InetAddress.getByAddress(ip);
+    InetAddress.lookup(null, addr, false);
+    return addr.getHostName();
+  }
+
+  /**
+   * Returns a list of all IP addresses for a given hostname.  Will throw
+   * an UnknownHostException if the hostname cannot be resolved.
+   */
+  public static byte[][] getHostByName(String hostname)
+    throws UnknownHostException
+  {
+    InetAddress[] iaddrs = InetAddress.lookup(hostname, null, true);
+    byte[][] addrs = new byte[iaddrs.length][];
+    for (int i = 0; i < iaddrs.length; i++)
+      addrs[i] = iaddrs[i].getAddress();
+    return addrs;
+  }
+
+  /**
+   * Return the IP address represented by a literal address.
+   * Will return null if the literal address is not valid.
+   *
+   * @param address the name of the host
+   *
+   * @return The IP address as a byte array
+   */
+  public static byte[] aton(String address)
+  {
+    return InetAddress.aton(address);
+  }
+}