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https://issues.apache.org/jira/browse/TIKA-1399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14102389#comment-14102389
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Nick Burch commented on TIKA-1399:
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Having read a few likely looking bits of the source, and created a test file, I
think that this magic will normally but not always be correct. I've added a
slightly tweaked magic in r1618890, which skips the length field but still
checks for the first header block (type=2), along with a unit test
> [Patch] add support for AxCrypt file type detection
> ---------------------------------------------------
>
> Key: TIKA-1399
> URL: https://issues.apache.org/jira/browse/TIKA-1399
> Project: Tika
> Issue Type: Improvement
> Components: detector, mime
> Affects Versions: 1.3, 1.4, 1.5
> Reporter: Florent Angebault
> Labels: patch
> Fix For: 1.7
>
>
> Please include the following mime declaration in
> {{tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml}}.
> It makes possible to detect AxCrypt file type with extension {{*.axx}}.
> {code}
> <mime-info>
> <mime-type type="application/x-axcrypt">
> <glob pattern="*.axx" />
> <magic priority="50">
> <match
> value="\xc0\xb9\x07\x2e\x4f\x93\xf1\x46\xa0\x15\x79\x2c\xa1\xd9\xe8\x21\x15\x00\x00\x00\x02"
> type="string" offset="0" />
> </magic>
> </mime-type>
> </mime-info>
> {code}
> The magic value is taken from the Aperture project:
> http://sourceforge.net/p/aperture/code/2493/tree/aperture/trunk/core/src/main/resources/org/semanticdesktop/aperture/mime/identifier/magic/mimetypes.xml#l1225
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