net.schmizz.sshj.common.SSHPacket Maven / Gradle / Ivy
/*
* Copyright (C)2009 - SSHJ Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.schmizz.sshj.common;
import java.util.Arrays;
public final class SSHPacket
extends Buffer {
public SSHPacket() {
super();
}
public SSHPacket(int size) {
super(size);
}
public SSHPacket(byte[] data) {
super(data);
}
/**
* Constructs new buffer for the specified SSH packet and reserves the needed space (5 bytes) for the packet
* header.
*
* @param msg the SSH command
*/
public SSHPacket(Message msg) {
super();
rpos = wpos = 5;
putMessageID(msg);
}
public SSHPacket(SSHPacket p) {
this.data = Arrays.copyOf(p.data, p.wpos);
this.rpos = p.rpos;
this.wpos = p.wpos;
}
/**
* Reads an SSH byte and returns it as {@link Message}
*
* @return the message identifier
*/
public Message readMessageID()
throws BufferException {
return Message.fromByte(readByte());
}
/**
* Writes a byte indicating the SSH message identifier
*
* @param msg the identifier as a {@link Message} type
*
* @return this
*/
public SSHPacket putMessageID(Message msg) {
return putByte(msg.toByte());
}
}