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Posted to issues@commons.apache.org by "Daniel Lowe (Updated) (JIRA)" <ji...@apache.org> on 2012/01/20 19:02:40 UTC
[jira] [Updated] (COMPRESS-171) createArchiveInputStream detects
text files less than 100 bytes as tar archives
[ https://issues.apache.org/jira/browse/COMPRESS-171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Lowe updated COMPRESS-171:
---------------------------------
Fix Version/s: (was: 1.1)
1.4
> createArchiveInputStream detects text files less than 100 bytes as tar archives
> -------------------------------------------------------------------------------
>
> Key: COMPRESS-171
> URL: https://issues.apache.org/jira/browse/COMPRESS-171
> Project: Commons Compress
> Issue Type: Bug
> Components: Archivers
> Affects Versions: 1.2, 1.3
> Environment: Windows 7/JDK 1.6
> Reporter: Daniel Lowe
> Labels: detection, tar
> Fix For: 1.4
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> The fix for COMPRESS-117 which modified ArchiveStreamFactory().createArchiveInputStream(inputstream) results in short text files (empirically seems to be those <= 100 bytes) being detected as tar archives which obviously is not desirable if one wants to know whether or not the files are archives.
> I'm not an expert on compressed archives but perhaps the heuristic that if a stream is interpretable as a tar file without an exception being thrown should only be applied on archives greater than 100 bytes?
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