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Posted to issues@commons.apache.org by "Sebastian Schuberth (Jira)" <ji...@apache.org> on 2023/06/14 14:20:00 UTC

[jira] [Created] (COMPRESS-645) TarArchiveInputStream accepts any files

Sebastian Schuberth created COMPRESS-645:
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             Summary: TarArchiveInputStream accepts any files
                 Key: COMPRESS-645
                 URL: https://issues.apache.org/jira/browse/COMPRESS-645
             Project: Commons Compress
          Issue Type: Bug
          Components: Archivers
    Affects Versions: 1.23.0
            Reporter: Sebastian Schuberth


I realized that iterating over a {{TarArchiveInputStream}} via {{getNextEntry}} does not throw if an arbitrary non-TAR file (or a compressed TAR, like {{.tar.gz}}) feeds the stream. Instead, simply the first call to {{getNextEntry}} return null. This means one cannot distinguish between an empty TAR file and a non-TAR file this way. And this behavior is in contrast to the other {{*ArchiveInputStream}} implementations which *do* throw if the file behind the stream is not of the supported type.



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