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downloading a git-generated archive based on the 'upstream' tag
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1 files changed, 316 insertions, 0 deletions

diff --git a/libjava/classpath/java/net/NetworkInterface.java b/libjava/classpath/java/net/NetworkInterface.java
new file mode 100644
index 000000000..127dfba78
--- /dev/null
+++ b/libjava/classpath/java/net/NetworkInterface.java
@@ -0,0 +1,316 @@
+/* NetworkInterface.java --
+   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2008 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.SystemProperties;
+
+import gnu.java.lang.CPStringBuilder;
+
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.Vector;
+
+/**
+ * This class models a network interface on the host computer.  A network
+ * interface contains a name (typically associated with a specific
+ * hardware adapter) and a list of addresses that are bound to it.
+ * For example, an ethernet interface may be named "eth0" and have the
+ * address 192.168.1.101 assigned to it.
+ *
+ * @author Michael Koch (konqueror@gmx.de)
+ * @since 1.4
+ */
+public final class NetworkInterface
+{
+  private final VMNetworkInterface netif;
+
+  private NetworkInterface(VMNetworkInterface netif)
+    {
+    this.netif = netif;
+    }
+
+  /** Creates an NetworkInterface instance which
+   * represents any interface in the system. Its only
+   * address is <code>0.0.0.0/0.0.0.0</code>. This
+   * method is needed by {@link MulticastSocket#getNetworkInterface}
+   */
+  static NetworkInterface createAnyInterface()
+  {
+    return new NetworkInterface(new VMNetworkInterface());
+  }
+
+  /**
+   * Returns the name of the network interface
+   *
+   * @return The name of the interface.
+   */
+  public String getName()
+  {
+    return netif.name;
+  }
+
+  /**
+   * Returns all available addresses of the network interface
+   *
+   * If a @see SecurityManager is available all addresses are checked
+   * with @see SecurityManager::checkConnect() if they are available.
+   * Only <code>InetAddresses</code> are returned where the security manager
+   * doesn't throw an exception.
+   *
+   * @return An enumeration of all addresses.
+   */
+  public Enumeration<InetAddress> getInetAddresses()
+  {
+    SecurityManager s = System.getSecurityManager();
+    Vector<InetAddress> inetAddresses
+      = new Vector<InetAddress>(netif.addresses);
+
+    if (s == null)
+      return inetAddresses.elements();
+
+    Vector<InetAddress> tmpInetAddresses = new Vector<InetAddress>(1, 1);
+
+    for (Enumeration<InetAddress> addresses = inetAddresses.elements();
+         addresses.hasMoreElements();)
+      {
+        InetAddress addr = addresses.nextElement();
+        try
+          {
+            s.checkConnect(addr.getHostAddress(), -1);
+            tmpInetAddresses.add(addr);
+          }
+        catch (SecurityException e)
+          {
+            // Ignore.
+          }
+      }
+
+    return tmpInetAddresses.elements();
+  }
+
+  /**
+   * Returns the display name of the interface
+   *
+   * @return The display name of the interface
+   */
+  public String getDisplayName()
+  {
+    return netif.name;
+  }
+
+  /**
+   * Returns an network interface by name
+   *
+   * @param name The name of the interface to return
+   *
+   * @return a <code>NetworkInterface</code> object representing the interface,
+   * or null if there is no interface with that name.
+   *
+   * @exception SocketException If an error occurs
+   * @exception NullPointerException If the specified name is null
+   */
+  public static NetworkInterface getByName(String name)
+    throws SocketException
+  {
+    if (name == null)
+      throw new NullPointerException();
+    VMNetworkInterface[] netifs = VMNetworkInterface.getVMInterfaces();
+    for (int i = 0; i < netifs.length; i++)
+      {
+        if (netifs[i].name.equals(name))
+          return new NetworkInterface(netifs[i]);
+      }
+    return null;
+  }
+
+  /**
+   * Return a network interface by its address
+   *
+   * @param addr The address of the interface to return
+   *
+   * @return the interface, or <code>null</code> if none found
+   *
+   * @exception SocketException If an error occurs
+   * @exception NullPointerException If the specified addess is null
+   */
+  public static NetworkInterface getByInetAddress(InetAddress addr)
+    throws SocketException
+  {
+    if (addr == null)
+      throw new NullPointerException();
+    VMNetworkInterface[] netifs = VMNetworkInterface.getVMInterfaces();
+    for (int i = 0; i < netifs.length; i++)
+      {
+        if (netifs[i].addresses.contains(addr))
+          return new NetworkInterface(netifs[i]);
+      }
+    return null;
+  }
+
+  /**
+   * Return an <code>Enumeration</code> of all available network interfaces
+   *
+   * @return all interfaces
+   *
+   * @exception SocketException If an error occurs
+   */
+  public static Enumeration<NetworkInterface> getNetworkInterfaces()
+    throws SocketException
+  {
+    VMNetworkInterface[] netifs = VMNetworkInterface.getVMInterfaces();
+    Vector<NetworkInterface> networkInterfaces =
+      new Vector<NetworkInterface>(netifs.length);
+    for (int i = 0; i < netifs.length; i++)
+      {
+        if (!netifs[i].addresses.isEmpty())
+          networkInterfaces.add(new NetworkInterface(netifs[i]));
+      }
+    return networkInterfaces.elements();
+  }
+
+  /**
+   * Checks if the current instance is equal to obj
+   *
+   * @param obj The object to compare with
+   *
+   * @return <code>true</code> if equal, <code>false</code> otherwise
+   */
+  public boolean equals(Object obj)
+  {
+    if (! (obj instanceof NetworkInterface))
+      return false;
+
+    NetworkInterface tmp = (NetworkInterface) obj;
+
+    if (netif.name == null)
+      return tmp.netif.name == null;
+
+    return (netif.name.equals(tmp.netif.name)
+            && (netif.addresses.equals(tmp.netif.addresses)));
+  }
+
+  /**
+   * Returns the hashcode of the current instance
+   *
+   * @return the hashcode
+   */
+  public int hashCode()
+  {
+    // FIXME: hash correctly
+    int hc = netif.addresses.hashCode();
+
+    if (netif.name != null)
+      hc += netif.name.hashCode();
+
+    return hc;
+  }
+
+  /**
+   * Returns a string representation of the interface
+   *
+   * @return the string
+   */
+  public String toString()
+  {
+    // FIXME: check if this is correct
+    CPStringBuilder result;
+    String separator = SystemProperties.getProperty("line.separator");
+
+    result = new CPStringBuilder();
+
+    result.append("name: ");
+    result.append(getDisplayName());
+    result.append(" (").append(getName()).append(") addresses:");
+    result.append(separator);
+
+    for (Iterator it = netif.addresses.iterator(); it.hasNext(); )
+      {
+        InetAddress address = (InetAddress) it.next();
+        result.append(address.toString()).append(";").append(separator);
+      }
+
+    return result.toString();
+  }
+
+  /**
+   * Determines whether this interface is ready to transfer data.
+   *
+   * @return whether the interface is up
+  */
+  public boolean isUp()
+    throws SocketException
+  {
+    return VMNetworkInterface.isUp(netif.name);
+  }
+
+  /**
+   * Determines whether this interface does point to point
+   * transmission.
+   *
+   * @return whether the interface does point to point transmission
+  */
+  public boolean isPointToPoint()
+    throws SocketException
+  {
+    return VMNetworkInterface.isPointToPoint(netif.name);
+  }
+
+  /**
+   * Determines whether this interface is the loopback interface.
+   *
+   * @return whether the interface is the loopback interface
+  */
+  public boolean isLoopback()
+    throws SocketException
+  {
+    return VMNetworkInterface.isLoopback(netif.name);
+  }
+
+  /**
+   * Determines whether this interface supports multicast transmission.
+   *
+   * @return whether the interface supports multicast transmission.
+  */
+  public boolean supportsMulticast()
+    throws SocketException
+  {
+    return VMNetworkInterface.supportsMulticast(netif.name);
+  }
+
+}