net.java.truevfs.comp.zipdriver.CheckedZipDriver Maven / Gradle / Ivy
/*
* Copyright (C) 2005-2015 Schlichtherle IT Services.
* All rights reserved. Use is subject to license terms.
*/
package net.java.truevfs.comp.zipdriver;
import javax.annotation.concurrent.Immutable;
/**
* An archive driver for ZIP files which checks the CRC32 values for all
* ZIP entries in input archives.
* The additional CRC32 computation makes this class slower than its super
* class.
*
* If there is a mismatch of the CRC32 values for a ZIP entry in an input
* archive, the {@link java.io.InputStream#close} method of the corresponding
* stream for the archive entry will throw a
* {@link net.java.truevfs.comp.zip.Crc32Exception}.
* Other than this, the archive entry will be processed normally.
* So if just the CRC32 value for the entry in the archive file has been
* modified, you can still read its entire contents.
*
* Subclasses must be thread-safe and should be immutable!
*
* @author Christian Schlichtherle
*/
@Immutable
public class CheckedZipDriver extends ZipDriver {
/**
* {@inheritDoc}
*
* @return {@code true}
*/
@Override
public boolean check(ZipDriverEntry local, ZipInputService input) {
return true;
}
}