/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.sshd.client.channel;
import java.util.HashMap;
import java.util.Map;
import org.apache.sshd.common.PtyMode;
import org.apache.sshd.common.SshConstants;
import org.apache.sshd.common.util.Buffer;
import org.apache.sshd.common.util.OsUtils;
import org.apache.sshd.common.util.SttySupport;
/**
* TODO Add javadoc
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class ChannelShell extends ChannelSession {
private boolean agentForwarding;
private String ptyType;
private int ptyColumns;
private int ptyLines;
private int ptyWidth;
private int ptyHeight;
private Map<PtyMode, Integer> ptyModes;
public ChannelShell() {
ptyType = System.getenv("TERM");
if (ptyType == null) {
ptyType = "dummy";
}
ptyColumns = 80;
ptyLines = 24;
ptyWidth = 640;
ptyHeight = 480;
// Set up default pty modes
ptyModes = new HashMap<PtyMode, Integer>();
ptyModes.put(PtyMode.ISIG, 1);
ptyModes.put(PtyMode.ICANON, 1);
ptyModes.put(PtyMode.ECHO, 1);
ptyModes.put(PtyMode.ECHOE, 1);
ptyModes.put(PtyMode.ECHOK, 1);
ptyModes.put(PtyMode.ECHONL, 0);
ptyModes.put(PtyMode.NOFLSH, 0);
}
public void setupSensibleDefaultPty() {
try {
if (OsUtils.isUNIX()) {
ptyModes = SttySupport.getUnixPtyModes();
ptyColumns = SttySupport.getTerminalWidth();
ptyLines = SttySupport.getTerminalHeight();
} else {
ptyType = "windows";
}
} catch (Throwable t) {
// Ignore exceptions
}
}
public boolean isAgentForwarding() {
return agentForwarding;
}
public void setAgentForwarding(boolean agentForwarding) {
this.agentForwarding = agentForwarding;
}
public String getPtyType() {
return ptyType;
}
public void setPtyType(String ptyType) {
this.ptyType = ptyType;
}
public int getPtyColumns() {
return ptyColumns;
}
public void setPtyColumns(int ptyColumns) {
this.ptyColumns = ptyColumns;
}
public int getPtyLines() {
return ptyLines;
}
public void setPtyLines(int ptyLines) {
this.ptyLines = ptyLines;
}
public int getPtyWidth() {
return ptyWidth;
}
public void setPtyWidth(int ptyWidth) {
this.ptyWidth = ptyWidth;
}
public int getPtyHeight() {
return ptyHeight;
}
public void setPtyHeight(int ptyHeight) {
this.ptyHeight = ptyHeight;
}
public Map<PtyMode, Integer> getPtyModes() {
return ptyModes;
}
public void setPtyModes(Map<PtyMode, Integer> ptyModes) {
this.ptyModes = ptyModes;
}
protected void doOpen() throws Exception {
super.doOpen();
Buffer buffer;
if (agentForwarding) {
log.info("Send agent forwarding request");
buffer = session.createBuffer(SshConstants.Message.SSH_MSG_CHANNEL_REQUEST, 0);
buffer.putInt(recipient);
buffer.putString("auth-agent-req@openssh.com");
buffer.putBoolean(false);
session.writePacket(buffer);
}
log.info("Send SSH_MSG_CHANNEL_REQUEST pty-req");
buffer = session.createBuffer(SshConstants.Message.SSH_MSG_CHANNEL_REQUEST, 0);
buffer.putInt(recipient);
buffer.putString("pty-req");
buffer.putBoolean(false);
buffer.putString(ptyType);
buffer.putInt(ptyColumns);
buffer.putInt(ptyLines);
buffer.putInt(ptyHeight);
buffer.putInt(ptyWidth);
Buffer modes = new Buffer();
for (PtyMode mode : ptyModes.keySet()) {
modes.putByte((byte) mode.toInt());
modes.putInt(ptyModes.get(mode));
}
modes.putByte((byte) 0);
buffer.putBytes(modes.getCompactData());
session.writePacket(buffer);
// log.info("Send SSH_MSG_CHANNEL_REQUEST env");
// buffer = session.createBuffer(SshConstants.Message.SSH_MSG_CHANNEL_REQUEST);
// buffer.putInt(recipient);
// buffer.putString("env");
// session.writePacket(buffer);
log.info("Send SSH_MSG_CHANNEL_REQUEST shell");
buffer = session.createBuffer(SshConstants.Message.SSH_MSG_CHANNEL_REQUEST, 0);
buffer.putInt(recipient);
buffer.putString("shell");
buffer.putBoolean(false);
session.writePacket(buffer);
}
}