/*
* 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.tools.ant.taskdefs.optional.ssh;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.JSchException;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.util.List;
import java.util.Iterator;
/**
* Utility class to carry out an upload scp transfer.
*/
public class ScpToMessage extends AbstractSshMessage {
private static final int HUNDRED_KILOBYTES = 102400;
private static final int BUFFER_SIZE = 1024;
private File localFile;
private String remotePath;
private List directoryList;
/**
* Constructor for ScpToMessage
* @param session the ssh session to use
*/
public ScpToMessage(Session session) {
super(session);
}
/**
* Constructor for ScpToMessage
* @param verbose if true do verbose logging
* @param session the ssh session to use
* @since Ant 1.7
*/
public ScpToMessage(boolean verbose, Session session) {
super(verbose, session);
}
/**
* Constructor for a local file to remote.
* @param verbose if true do verbose logging
* @param session the scp session to use
* @param aLocalFile the local file
* @param aRemotePath the remote path
* @since Ant 1.6.2
*/
public ScpToMessage(boolean verbose,
Session session,
File aLocalFile,
String aRemotePath) {
this(verbose, session, aRemotePath);
this.localFile = aLocalFile;
}
/**
* Constructor for a local directories to remote.
* @param verbose if true do verbose logging
* @param session the scp session to use
* @param aDirectoryList a list of directories
* @param aRemotePath the remote path
* @since Ant 1.6.2
*/
public ScpToMessage(boolean verbose,
Session session,
List aDirectoryList,
String aRemotePath) {
this(verbose, session, aRemotePath);
this.directoryList = aDirectoryList;
}
/**
* Constructor for ScpToMessage.
* @param verbose if true do verbose logging
* @param session the scp session to use
* @param aRemotePath the remote path
* @since Ant 1.6.2
*/
private ScpToMessage(boolean verbose,
Session session,
String aRemotePath) {
super(verbose, session);
this.remotePath = aRemotePath;
}
/**
* Constructor for ScpToMessage.
* @param session the scp session to use
* @param aLocalFile the local file
* @param aRemotePath the remote path
*/
public ScpToMessage(Session session,
File aLocalFile,
String aRemotePath) {
this(false, session, aLocalFile, aRemotePath);
}
/**
* Constructor for ScpToMessage.
* @param session the scp session to use
* @param aDirectoryList a list of directories
* @param aRemotePath the remote path
*/
public ScpToMessage(Session session,
List aDirectoryList,
String aRemotePath) {
this(false, session, aDirectoryList, aRemotePath);
}
/**
* Carry out the transfer.
* @throws IOException on i/o errors
* @throws JSchException on errors detected by scp
*/
public void execute() throws IOException, JSchException {
if (directoryList != null) {
doMultipleTransfer();
}
if (localFile != null) {
doSingleTransfer();
}
log("done.\n");
}
private void doSingleTransfer() throws IOException, JSchException {
String cmd = "scp -t " + remotePath;
Channel channel = openExecChannel(cmd);
try {
OutputStream out = channel.getOutputStream();
InputStream in = channel.getInputStream();
channel.connect();
waitForAck(in);
sendFileToRemote(localFile, in, out);
} finally {
if (channel != null) {
channel.disconnect();
}
}
}
private void doMultipleTransfer() throws IOException, JSchException {
Channel channel = openExecChannel("scp -r -d -t " + remotePath);
try {
OutputStream out = channel.getOutputStream();
InputStream in = channel.getInputStream();
channel.connect();
waitForAck(in);
for (Iterator i = directoryList.iterator(); i.hasNext();) {
Directory current = (Directory) i.next();
sendDirectory(current, in, out);
}
} finally {
if (channel != null) {
channel.disconnect();
}
}
}
private void sendDirectory(Directory current,
InputStream in,
OutputStream out) throws IOException {
for (Iterator fileIt = current.filesIterator(); fileIt.hasNext();) {
sendFileToRemote((File) fileIt.next(), in, out);
}
for (Iterator dirIt = current.directoryIterator(); dirIt.hasNext();) {
Directory dir = (Directory) dirIt.next();
sendDirectoryToRemote(dir, in, out);
}
}
private void sendDirectoryToRemote(Directory directory,
InputStream in,
OutputStream out) throws IOException {
String command = "D0755 0 ";
command += directory.getDirectory().getName();
command += "\n";
out.write(command.getBytes());
out.flush();
waitForAck(in);
sendDirectory(directory, in, out);
out.write("E\n".getBytes());
out.flush();
waitForAck(in);
}
private void sendFileToRemote(File localFile,
InputStream in,
OutputStream out) throws IOException {
// send "C0644 filesize filename", where filename should not include '/'
long filesize = localFile.length();
String command = "C0644 " + filesize + " ";
command += localFile.getName();
command += "\n";
out.write(command.getBytes());
out.flush();
waitForAck(in);
// send a content of lfile
FileInputStream fis = new FileInputStream(localFile);
byte[] buf = new byte[BUFFER_SIZE];
long startTime = System.currentTimeMillis();
long totalLength = 0;
// only track progress for files larger than 100kb in verbose mode
boolean trackProgress = getVerbose() && filesize > HUNDRED_KILOBYTES;
// since filesize keeps on decreasing we have to store the
// initial filesize
long initFilesize = filesize;
int percentTransmitted = 0;
try {
if (this.getVerbose()) {
log("Sending: " + localFile.getName() + " : " + localFile.length());
}
while (true) {
int len = fis.read(buf, 0, buf.length);
if (len <= 0) {
break;
}
out.write(buf, 0, len);
totalLength += len;
if (trackProgress) {
percentTransmitted = trackProgress(initFilesize,
totalLength,
percentTransmitted);
}
}
out.flush();
sendAck(out);
waitForAck(in);
} finally {
if (this.getVerbose()) {
long endTime = System.currentTimeMillis();
logStats(startTime, endTime, totalLength);
}
fis.close();
}
}
/**
* Get the local file
* @return the local file
*/
public File getLocalFile() {
return localFile;
}
/**
* Get the remote path
* @return the remote path
*/
public String getRemotePath() {
return remotePath;
}
}