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Micro Distribution of the Payara Project
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.glassfish.cluster.ssh.sftp;
import com.trilead.ssh2.Connection;
import com.trilead.ssh2.SFTPException;
import com.trilead.ssh2.SFTPv3Client;
import com.trilead.ssh2.SFTPv3FileAttributes;
import com.trilead.ssh2.SFTPv3FileHandle;
import com.trilead.ssh2.sftp.ErrorCodes;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import org.glassfish.cluster.ssh.util.SSHUtil;
public class SFTPClient extends SFTPv3Client {
private Connection connection = null;
public SFTPClient(Connection conn) throws IOException {
super(conn);
this.connection = conn;
SSHUtil.register(connection);
}
/**
* Close the SFTP connection and free any resources associated with it.
* close() should be called when you are done using the SFTPClient
*/
@Override
public void close() {
if (connection != null) {
SSHUtil.unregister(connection);
connection = null;
}
super.close();
}
/**
* Checks if the given path exists.
*/
public boolean exists(String path) throws IOException {
return _stat(normalizePath(path))!=null;
}
/**
* Graceful {@link #stat(String)} that returns null if the path doesn't exist.
*/
public SFTPv3FileAttributes _stat(String path) throws IOException {
try {
return stat(normalizePath(path));
} catch (SFTPException e) {
int c = e.getServerErrorCode();
if (c== ErrorCodes.SSH_FX_NO_SUCH_FILE || c==ErrorCodes.SSH_FX_NO_SUCH_PATH)
return null;
else
throw e;
}
}
/**
* Makes sure that the directory exists, by creating it if necessary.
*/
public void mkdirs(String path, int posixPermission) throws IOException {
path =normalizePath(path);
SFTPv3FileAttributes atts = _stat(path);
if (atts!=null && atts.isDirectory())
return;
int idx = path.lastIndexOf("/");
if (idx>0)
mkdirs(path.substring(0,idx), posixPermission);
try {
mkdir(path, posixPermission);
} catch (IOException e) {
throw new IOException("Failed to mkdir "+path,e);
}
}
/**
* Creates a new file and writes to it.
*/
public OutputStream writeToFile(String path) throws IOException {
path =normalizePath(path);
final SFTPv3FileHandle h = createFile(path);
return new OutputStream() {
private long offset = 0;
public void write(int b) throws IOException {
write(new byte[]{(byte)b});
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
SFTPClient.this.write(h,offset,b,off,len);
offset += len;
}
@Override
public void close() throws IOException {
closeFile(h);
}
};
}
public InputStream read(String file) throws IOException {
file =normalizePath(file);
final SFTPv3FileHandle h = openFileRO(file);
return new InputStream() {
private long offset = 0;
public int read() throws IOException {
byte[] b = new byte[1];
if(read(b)<0)
return -1;
return b[0];
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
int r = SFTPClient.this.read(h,offset,b,off,len);
if (r<0) return -1;
offset += r;
return r;
}
@Override
public long skip(long n) throws IOException {
offset += n;
return n;
}
@Override
public void close() throws IOException {
closeFile(h);
}
};
}
public void chmod(String path, int permissions) throws IOException {
path =normalizePath(path);
SFTPv3FileAttributes atts = new SFTPv3FileAttributes();
atts.permissions = permissions;
setstat(path, atts);
}
// Commands run in a shell on Windows need to have forward slashes.
public static String normalizePath(String path){
return path.replaceAll("\\\\","/");
}
}