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https://issues.apache.org/jira/browse/COMPRESS-316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Burch updated COMPRESS-316:
--------------------------------
Attachment: zlib-header-detection.patch
Proposed patch which adds zlib header signature detection to
DeflateCompressorInputStream, uses that in CompressorStreamFactory, and adds a
test to DetectCompressorTestCase using an existing test file
> CompressorStreamFactory doesn't handle deflate streams with a zlib header
> -------------------------------------------------------------------------
>
> Key: COMPRESS-316
> URL: https://issues.apache.org/jira/browse/COMPRESS-316
> Project: Commons Compress
> Issue Type: Bug
> Components: Compressors
> Affects Versions: 1.9
> Reporter: Nick Burch
> Attachments: zlib-header-detection.patch
>
>
> If you take a zlib / deflate compressed file, with the zlib header (eg the
> test file bla.tar.deflatez) and pass it to
> CompressorStreamFactory.createCompressorInputStream, it won't be detected and
> you'll get a CompressorException("No Compressor found for the stream
> signature.")
> While detecting header-less zlib files is probably too tricky to manage,
> those with the header ought to be possible to spot and handle
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