/*
* Copyright 2014 gitblit.com.
*
* 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 com.gitblit.servlet;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import org.apache.commons.compress.compressors.CompressorOutputStream;
import org.apache.commons.compress.compressors.CompressorStreamFactory;
import org.eclipse.jgit.lib.FileMode;
import com.gitblit.dagger.DaggerServlet;
import com.gitblit.manager.IRuntimeManager;
import dagger.ObjectGraph;
/**
* Handles requests for the Barnum pt (patchset tool).
*
* The user-agent determines the content and compression format.
*
* @author James Moger
*
*/
public class PtServlet extends DaggerServlet {
private static final long serialVersionUID = 1L;
private static final long lastModified = System.currentTimeMillis();
private IRuntimeManager runtimeManager;
@Override
protected void inject(ObjectGraph dagger) {
this.runtimeManager = dagger.get(IRuntimeManager.class);
}
@Override
protected long getLastModified(HttpServletRequest req) {
File file = runtimeManager.getFileOrFolder("tickets.pt", "${baseFolder}/pt.py");
if (file.exists()) {
return Math.max(lastModified, file.lastModified());
} else {
return lastModified;
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
response.setContentType("application/octet-stream");
response.setDateHeader("Last-Modified", lastModified);
response.setHeader("Cache-Control", "none");
response.setHeader("Pragma", "no-cache");
response.setDateHeader("Expires", 0);
boolean windows = false;
try {
String useragent = request.getHeader("user-agent").toString();
windows = useragent.toLowerCase().contains("windows");
} catch (Exception e) {
}
byte[] pyBytes;
File file = runtimeManager.getFileOrFolder("tickets.pt", "${baseFolder}/pt.py");
if (file.exists()) {
// custom script
pyBytes = readAll(new FileInputStream(file));
} else {
// default script
pyBytes = readAll(getClass().getResourceAsStream("/pt.py"));
}
if (windows) {
// windows: download zip file with pt.py and pt.cmd
response.setHeader("Content-Disposition", "attachment; filename=\"pt.zip\"");
OutputStream os = response.getOutputStream();
ZipArchiveOutputStream zos = new ZipArchiveOutputStream(os);
// add the Python script
ZipArchiveEntry pyEntry = new ZipArchiveEntry("pt.py");
pyEntry.setSize(pyBytes.length);
pyEntry.setUnixMode(FileMode.EXECUTABLE_FILE.getBits());
pyEntry.setTime(lastModified);
zos.putArchiveEntry(pyEntry);
zos.write(pyBytes);
zos.closeArchiveEntry();
// add a Python launch cmd file
byte [] cmdBytes = readAll(getClass().getResourceAsStream("/pt.cmd"));
ZipArchiveEntry cmdEntry = new ZipArchiveEntry("pt.cmd");
cmdEntry.setSize(cmdBytes.length);
cmdEntry.setUnixMode(FileMode.REGULAR_FILE.getBits());
cmdEntry.setTime(lastModified);
zos.putArchiveEntry(cmdEntry);
zos.write(cmdBytes);
zos.closeArchiveEntry();
// add a brief readme
byte [] txtBytes = readAll(getClass().getResourceAsStream("/pt.txt"));
ZipArchiveEntry txtEntry = new ZipArchiveEntry("readme.txt");
txtEntry.setSize(txtBytes.length);
txtEntry.setUnixMode(FileMode.REGULAR_FILE.getBits());
txtEntry.setTime(lastModified);
zos.putArchiveEntry(txtEntry);
zos.write(txtBytes);
zos.closeArchiveEntry();
// cleanup
zos.finish();
zos.close();
os.flush();
} else {
// unix: download a tar.gz file with pt.py set with execute permissions
response.setHeader("Content-Disposition", "attachment; filename=\"pt.tar.gz\"");
OutputStream os = response.getOutputStream();
CompressorOutputStream cos = new CompressorStreamFactory().createCompressorOutputStream(CompressorStreamFactory.GZIP, os);
TarArchiveOutputStream tos = new TarArchiveOutputStream(cos);
tos.setAddPaxHeadersForNonAsciiNames(true);
tos.setLongFileMode(TarArchiveOutputStream.LONGFILE_POSIX);
// add the Python script
TarArchiveEntry pyEntry = new TarArchiveEntry("pt");
pyEntry.setMode(FileMode.EXECUTABLE_FILE.getBits());
pyEntry.setModTime(lastModified);
pyEntry.setSize(pyBytes.length);
tos.putArchiveEntry(pyEntry);
tos.write(pyBytes);
tos.closeArchiveEntry();
// add a brief readme
byte [] txtBytes = readAll(getClass().getResourceAsStream("/pt.txt"));
TarArchiveEntry txtEntry = new TarArchiveEntry("README");
txtEntry.setMode(FileMode.REGULAR_FILE.getBits());
txtEntry.setModTime(lastModified);
txtEntry.setSize(txtBytes.length);
tos.putArchiveEntry(txtEntry);
tos.write(txtBytes);
tos.closeArchiveEntry();
// cleanup
tos.finish();
tos.close();
cos.close();
os.flush();
}
} catch (Exception e) {
e.printStackTrace();
}
}
byte [] readAll(InputStream is) {
ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
byte [] buffer = new byte[4096];
int len = 0;
while ((len = is.read(buffer)) > -1) {
os.write(buffer, 0, len);
}
return os.toByteArray();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
os.close();
is.close();
} catch (Exception e) {
// ignore
}
}
return new byte[0];
}
}