/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) 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 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) 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 OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
* http://www.opennms.com/
*******************************************************************************/
package org.opennms.jicmp.jna;
import java.net.InetAddress;
import java.net.UnknownHostException;
import com.sun.jna.Structure;
public class bsd_sockaddr_in extends Structure {
public byte sin_len;
public byte sin_family;
/* we use an array of bytes rather than int16 to avoid jna byte reordering */
public byte[] sin_port;
/* we use an array of bytes rather than the tradition int32
* to avoid having jna to byte-order swapping.. They are already in
* network byte order in java
*/
public byte[] sin_addr;
public byte[] sin_zero = new byte[8];
public bsd_sockaddr_in(int family, byte[] addr, byte[] port) {
sin_family = (byte)(0xff & family);
assertLen("port", port, 2);
sin_port = port;
assertLen("address", addr, 4);
sin_addr = addr;
sin_len = (byte)(0xff & size());
}
public bsd_sockaddr_in() {
this((byte)0, new byte[4], new byte[2]);
}
public bsd_sockaddr_in(InetAddress address, int port) {
this(NativeDatagramSocket.AF_INET,
address.getAddress(),
new byte[] {(byte)(0xff & (port >> 8)), (byte)(0xff & port)});
}
private void assertLen(String field, byte[] addr, int len) {
if (addr.length != len) {
throw new IllegalArgumentException(field+" length must be "+len+" bytes");
}
}
public InetAddress getAddress() {
try {
return InetAddress.getByAddress(sin_addr);
} catch (UnknownHostException e) {
// this can't happen because we ensure the sin_addr always has length 4
return null;
}
}
public void setAddress(InetAddress address) {
byte[] addr = address.getAddress();
assertLen("address", addr, 4);
sin_addr = addr;
}
public int getPort() {
int port = 0;
for(int i = 0; i < 2; i++) {
port = ((port << 8) | (sin_port[i] & 0xff));
}
return port;
}
public void setPort(int port) {
byte[] p = new byte[] {(byte)(0xff & (port >> 8)), (byte)(0xff & port)};
assertLen("port", p, 2);
sin_port = p;
}
}