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Posted to dev@tika.apache.org by "Maxim Valyanskiy (JIRA)" <ji...@apache.org> on 2009/07/01 13:24:47 UTC

[jira] Created: (TIKA-257) Uncorrect mime-type detection for ooxml

Uncorrect mime-type detection for ooxml
---------------------------------------

                 Key: TIKA-257
                 URL: https://issues.apache.org/jira/browse/TIKA-257
             Project: Tika
          Issue Type: Bug
          Components: general
    Affects Versions: 0.4
            Reporter: Maxim Valyanskiy


MimeTypes detects docx (and other office XML documents) as 'application/zip' when file does not have proper extension:

$ java -jar tika-app/target/tika-app-0.4-SNAPSHOT.jar -m /home/maxcom/download-tmp/proto.docx
Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
resourceName: proto.docx

$ cat /home/maxcom/download-tmp/proto.docx | java -jar tika-app/target/tika-app-0.4-SNAPSHOT.jar -m 
Content-Type: application/zip

This breaks text extraction when filename is not known

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[jira] Resolved: (TIKA-257) Uncorrect mime-type detection for ooxml

Posted by "Jukka Zitting (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/TIKA-257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jukka Zitting resolved TIKA-257.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 0.4
         Assignee: Jukka Zitting

I found a pretty accurate magic byte pattern (the file name string [Content_Types].xml at offset 30) for OOXML files. This still doesn't tell whether the document is a spreadsheet, a presentation or something different, but at least it's enough to allow Tika to correctly send the document to OOXMLParser for more detailed processing with POI.

I added the byte pattern and made some related adjustments in revision 793696. The above test case now passes.

Resolving as Fixed.

> Uncorrect mime-type detection for ooxml
> ---------------------------------------
>
>                 Key: TIKA-257
>                 URL: https://issues.apache.org/jira/browse/TIKA-257
>             Project: Tika
>          Issue Type: Bug
>          Components: general
>    Affects Versions: 0.4
>            Reporter: Maxim Valyanskiy
>            Assignee: Jukka Zitting
>             Fix For: 0.4
>
>
> MimeTypes detects docx (and other office XML documents) as 'application/zip' when file does not have proper extension:
> $ java -jar tika-app/target/tika-app-0.4-SNAPSHOT.jar -m /home/maxcom/download-tmp/proto.docx
> Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
> resourceName: proto.docx
> $ cat /home/maxcom/download-tmp/proto.docx | java -jar tika-app/target/tika-app-0.4-SNAPSHOT.jar -m 
> Content-Type: application/zip
> This breaks text extraction when filename is not known

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