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From "Andrew Jackson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TIKA-900) Tika fails to detect ISO9660 disk images
Date Mon, 23 Apr 2012 14:09:35 GMT

     [ https://issues.apache.org/jira/browse/TIKA-900?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Jackson updated TIKA-900:
--------------------------------

    Description: I have been testing Tika's ability to identify ISO9660 disk image file systems,
and discovered two problems. Firstly, the offset match matcher was wrong (37633 instead of
32769). Secondly, and more seriously, it was impossible for that signaure to ever match, because
the default buffer size was far too small. It is currently set to 8KB, and as this signature
is some 36KB into the file, Tika could never find the match. The attached patch fixes the
magic, and extends the buffer to 64KB.  (was: I have been testing Tika's ability to identify
ISO9660 disk image file systems, and discovered two problems. Firstly, the offset match matcher
was wrong (37633 instead of 32769). Secondly, and more seriously, it was impossible for that
signaure to ever match, because the default buffer size was far to small. It is currently
set to 8KB, and as this signature is some 36KB into the file, Tika could never find the match.
The attached patch fixes the magic, and extends the buffer to 64KB.)
    
> Tika fails to detect ISO9660 disk images
> ----------------------------------------
>
>                 Key: TIKA-900
>                 URL: https://issues.apache.org/jira/browse/TIKA-900
>             Project: Tika
>          Issue Type: Bug
>          Components: mime
>    Affects Versions: 1.1
>         Environment: Any.
>            Reporter: Andrew Jackson
>            Priority: Minor
>         Attachments: iso-image-detection.patch
>
>
> I have been testing Tika's ability to identify ISO9660 disk image file systems, and discovered
two problems. Firstly, the offset match matcher was wrong (37633 instead of 32769). Secondly,
and more seriously, it was impossible for that signaure to ever match, because the default
buffer size was far too small. It is currently set to 8KB, and as this signature is some 36KB
into the file, Tika could never find the match. The attached patch fixes the magic, and extends
the buffer to 64KB.

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