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package com.sun.enterprise.ee.synchronization.http;
import java.util.List;
import java.util.ArrayList;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.CheckedInputStream;
import com.sun.enterprise.ee.util.zip.Unzipper;
import com.sun.enterprise.ee.synchronization.SynchronizationResponse;
import com.sun.enterprise.ee.synchronization.processor.ServletProcessor;
import java.io.IOException;
/**
* Explodes a zip file under the target directory.
*/
class HttpUnzipper extends Unzipper {
/**
* Constructor.
*
* @param targetDirectory name of base directory where the zip content
* will be exploded
*/
HttpUnzipper(String targetDirectory) {
super(targetDirectory);
}
/**
* Explodes a zip file from the given input stream under the target
* directory. This method handles special case for HTTP processing.
* It deserializes the synchronization response from the input stream
* while processing the zip entries from input stream.
*
* @param in input stream from zip file
* @return synchronization response
*
* @throws IOException if an i/o error
*/
public SynchronizationResponse writeZip(InputStream in, String resEntry)
throws IOException, ClassNotFoundException {
SynchronizationResponse response = null;
ZipInputStream zin = null;
CheckedInputStream cis = null;
ZipEntry entry = null;
ObjectInputStream oin = null;
try {
cis = new CheckedInputStream(in, new CRC32());
zin = new ZipInputStream(cis);
entry = zin.getNextEntry();
while (entry != null) {
String eName = entry.getName();
if (isIgnoredEntry(eName)) {
// do nothing, skip this entry
} else if (ServletProcessor.RESPONSE_ENTRY_NAME.equals(eName)) {
oin = new ObjectInputStream(zin);
response = (SynchronizationResponse) oin.readObject();
} else {
writeZipEntry(entry, zin);
}
// next entry
zin.closeEntry();
entry = zin.getNextEntry();
}
zin.close();
zin = null;
return response;
} finally {
if (cis != null) {
try { cis.close(); } catch (Exception ex) { }
}
if (zin != null) {
try { zin.close(); } catch (Exception ex) { }
}
if (oin != null) {
try { oin.close(); } catch (Exception ex) { }
}
}
}
}