From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/java/net/NetworkInterface.java | 316 +++++++++++++++++++++++ 1 file changed, 316 insertions(+) create mode 100644 libjava/classpath/java/net/NetworkInterface.java (limited to 'libjava/classpath/java/net/NetworkInterface.java') 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 0.0.0.0/0.0.0.0. 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 InetAddresses are returned where the security manager + * doesn't throw an exception. + * + * @return An enumeration of all addresses. + */ + public Enumeration getInetAddresses() + { + SecurityManager s = System.getSecurityManager(); + Vector inetAddresses + = new Vector(netif.addresses); + + if (s == null) + return inetAddresses.elements(); + + Vector tmpInetAddresses = new Vector(1, 1); + + for (Enumeration 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 NetworkInterface 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 null 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 Enumeration of all available network interfaces + * + * @return all interfaces + * + * @exception SocketException If an error occurs + */ + public static Enumeration getNetworkInterfaces() + throws SocketException + { + VMNetworkInterface[] netifs = VMNetworkInterface.getVMInterfaces(); + Vector networkInterfaces = + new Vector(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 true if equal, false 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); + } + +} -- cgit v1.2.3