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From "Robin Schimpf (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COMPRESS-479) Unable to extract Zip with unknown UniCode path extra data version
Date Tue, 16 Apr 2019 12:17:00 GMT

    [ https://issues.apache.org/jira/browse/COMPRESS-479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16818944#comment-16818944
] 

Robin Schimpf commented on COMPRESS-479:
----------------------------------------

I have seen a simliar file in our production environment. The attached file is artificial
but with the same version as the originial problematic file. I also was unable to find out
with which archiver the original file was created.

> Unable to extract Zip with unknown UniCode path extra data version
> ------------------------------------------------------------------
>
>                 Key: COMPRESS-479
>                 URL: https://issues.apache.org/jira/browse/COMPRESS-479
>             Project: Commons Compress
>          Issue Type: Bug
>    Affects Versions: 1.18
>            Reporter: Robin Schimpf
>            Priority: Major
>             Fix For: 1.19
>
>         Attachments: unicode-test10509149899131946592.zip
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> The following exception is thrown when the version of the UniCode path extra data version
is not 1. 7-Zip and Windows Explorer will extract the attached file. The version in the file
was changed via a Hex editor to provoke the error.
> {code:java}
> java.lang.RuntimeException: Error parsing extra fields for entry: %U20AC_for_Dollar.txt
- Unsupported version [116] for UniCode path extra data.
> 	at org.apache.commons.compress.archivers.zip.ZipArchiveEntry.setExtra(ZipArchiveEntry.java:626)
> 	at org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.getNextZipEntry(ZipArchiveInputStream.java:315)
> 	at org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.getNextEntry(ZipArchiveInputStream.java:408)
> 	at org.apache.commons.compress.archivers.zip.UTF8ZipFilesTest.testZipFileReadsUnicodeFields(UTF8ZipFilesTest.java:186)
> ...
> Caused by: java.util.zip.ZipException: Unsupported version [116] for UniCode path extra
data.
> 	at org.apache.commons.compress.archivers.zip.AbstractUnicodeExtraField.parseFromLocalFileData(AbstractUnicodeExtraField.java:172)
> 	at org.apache.commons.compress.archivers.zip.ExtraFieldUtils.parse(ExtraFieldUtils.java:180)
> 	at org.apache.commons.compress.archivers.zip.ZipArchiveEntry.setExtra(ZipArchiveEntry.java:620)
> {code}
> As I understand the specification in Section 4.6.8 and 4.6.9 when the version is unknown
the information shoule be ignored.
> Changes MAY NOT be backward compatible so this extra field *SHOULD NOT be used if the
version is not recognized*.



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