org.apache.poi.poifs.crypt.temp

Class AesZipFileZipEntrySource

java.lang.Object

org.apache.poi.poifs.crypt.temp.AesZipFileZipEntrySource

All Implemented Interfaces:

Closeable, AutoCloseable, ZipEntrySource

@Beta
public final class AesZipFileZipEntrySource
extends Object
implements ZipEntrySource

An example ZipEntrySource that has encrypted temp files to ensure that sensitive data is not stored in raw format on disk.

Method Summary

Modifier and Type	Method and Description
void	close() Indicates we are done with reading, and resources may be freed
static AesZipFileZipEntrySource	createZipEntrySource(InputStream is)
Enumeration<? extends org.apache.commons.compress.archivers.zip.ZipArchiveEntry>	getEntries() Note: the file sizes are rounded up to the next cipher block size, so don't rely on file sizes of these custom encrypted zip file entries!
org.apache.commons.compress.archivers.zip.ZipArchiveEntry	getEntry(String path) Return an entry by its path
InputStream	getInputStream(org.apache.commons.compress.archivers.zip.ZipArchiveEntry entry) Returns an InputStream of the decompressed data that makes up the entry
boolean	isClosed() Has close been called already?

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getEntries

public Enumeration<? extends org.apache.commons.compress.archivers.zip.ZipArchiveEntry> getEntries()

Note: the file sizes are rounded up to the next cipher block size, so don't rely on file sizes of these custom encrypted zip file entries!

Specified by:

getEntries in interface ZipEntrySource

getEntry

public org.apache.commons.compress.archivers.zip.ZipArchiveEntry getEntry(String path)

Description copied from interface: ZipEntrySource

Return an entry by its path

Specified by:

getEntry in interface ZipEntrySource

Parameters:

path - the path in unix-notation

Returns:

the entry or null if not found

getInputStream

public InputStream getInputStream(org.apache.commons.compress.archivers.zip.ZipArchiveEntry entry)
                           throws IOException

Description copied from interface: ZipEntrySource

Returns an InputStream of the decompressed data that makes up the entry

Specified by:

getInputStream in interface ZipEntrySource

Throws:

IOException

close

public void close()
           throws IOException

Description copied from interface: ZipEntrySource

Indicates we are done with reading, and resources may be freed

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ZipEntrySource

Throws:

IOException

isClosed

public boolean isClosed()

Description copied from interface: ZipEntrySource

Has close been called already?

Specified by:

isClosed in interface ZipEntrySource

createZipEntrySource

public static AesZipFileZipEntrySource createZipEntrySource(InputStream is)
                                                     throws IOException

Throws:

IOException