Example #1
0
 /**
  * Returns the NetworkInterface corresponding to the given interface index, or null if no
  * interface has this index.
  *
  * @throws SocketException if an error occurs.
  * @since 1.7
  */
 public static NetworkInterface getByIndex(int index) throws SocketException {
   String name = Libcore.os.if_indextoname(index);
   if (name == null) {
     return null;
   }
   return NetworkInterface.getByName(name);
 }
Example #2
0
  private static List<NetworkInterface> getNetworkInterfacesList() throws SocketException {
    String[] interfaceNames = getInterfaceNames();
    NetworkInterface[] interfaces = new NetworkInterface[interfaceNames.length];
    boolean[] done = new boolean[interfaces.length];
    for (int i = 0; i < interfaceNames.length; ++i) {
      interfaces[i] = NetworkInterface.getByName(interfaceNames[i]);
      // readdir(2) and our stat(2), so mark interfaces that disappeared as 'done'.
      if (interfaces[i] == null) {
        done[i] = true;
      }
    }

    List<NetworkInterface> result = new ArrayList<NetworkInterface>();
    for (int counter = 0; counter < interfaces.length; counter++) {
      // If this interface has been dealt with already, continue.
      if (done[counter]) {
        continue;
      }
      int counter2 = counter;
      // Checks whether the following interfaces are children.
      for (; counter2 < interfaces.length; counter2++) {
        if (done[counter2]) {
          continue;
        }
        if (interfaces[counter2].name.startsWith(interfaces[counter].name + ":")) {
          interfaces[counter].children.add(interfaces[counter2]);
          interfaces[counter2].parent = interfaces[counter];
          interfaces[counter].addresses.addAll(interfaces[counter2].addresses);
          done[counter2] = true;
        }
      }
      result.add(interfaces[counter]);
      done[counter] = true;
    }
    return result;
  }