/*
* 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.server.command;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.apache.sshd.common.file.FileSystemAware;
import org.apache.sshd.common.file.FileSystemView;
import org.apache.sshd.common.scp.ScpHelper;
import org.apache.sshd.server.Command;
import org.apache.sshd.server.Environment;
import org.apache.sshd.server.ExitCallback;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This commands provide SCP support on both server and client side.
* Permissions and preservation of access / modification times on files
* are not supported.
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class ScpCommand implements Command, Runnable, FileSystemAware {
protected static final Logger log = LoggerFactory.getLogger(ScpCommand.class);
protected String name;
protected boolean optR;
protected boolean optT;
protected boolean optF;
protected boolean optD;
protected boolean optP; // TODO: handle modification times
protected FileSystemView root;
protected String path;
protected InputStream in;
protected OutputStream out;
protected OutputStream err;
protected ExitCallback callback;
protected IOException error;
public ScpCommand(String command) {
this.name = command;
log.debug("Executing command {}", command);
String[] args = command.split(" ");
for (int i = 1; i < args.length; i++) {
if (args[i].charAt(0) == '-') {
for (int j = 1; j < args[i].length(); j++) {
switch (args[i].charAt(j)) {
case 'f':
optF = true;
break;
case 'p':
optP = true;
break;
case 'r':
optR = true;
break;
case 't':
optT = true;
break;
case 'd':
optD = true;
break;
// default:
// error = new IOException("Unsupported option: " + args[i].charAt(j));
// return;
}
}
} else {
path = command.substring(command.indexOf(args[i-1]) + args[i-1].length() + 1);
if (path.startsWith("\"") && path.endsWith("\"") || path.startsWith("'") && path.endsWith("'")) {
path = path.substring(1, path.length() - 1);
}
break;
}
}
if (!optF && !optT) {
error = new IOException("Either -f or -t option should be set");
}
}
public void setInputStream(InputStream in) {
this.in = in;
}
public void setOutputStream(OutputStream out) {
this.out = out;
}
public void setErrorStream(OutputStream err) {
this.err = err;
}
public void setExitCallback(ExitCallback callback) {
this.callback = callback;
}
public void setFileSystemView(FileSystemView view) {
this.root = view;
}
public void start(Environment env) throws IOException {
if (error != null) {
throw error;
}
new Thread(this, "ScpCommand: " + name).start();
}
public void destroy() {
}
public void run() {
int exitValue = ScpHelper.OK;
String exitMessage = null;
ScpHelper helper = new ScpHelper(in, out, root);
try {
if (optT) {
helper.receive(root.getFile(path), optR, optD, optP);
} else if (optF) {
helper.send(Collections.singletonList(path), optR, optP);
} else {
throw new IOException("Unsupported mode");
}
} catch (IOException e) {
try {
exitValue = ScpHelper.ERROR;
exitMessage = e.getMessage() == null ? "" : e.getMessage();
out.write(exitValue);
out.write(exitMessage.getBytes());
out.write('\n');
out.flush();
} catch (IOException e2) {
// Ignore
}
log.info("Error in scp command", e);
} finally {
if (callback != null) {
callback.onExit(exitValue, exitMessage);
}
}
}
}