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https://issues.apache.org/jira/browse/TIKA-1489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Allison updated TIKA-1489:
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Attachment: testPDF_no_extract_yes_accessibility_owner_user.pdf
testPDF_no_extract_yes_accessibility_owner_empty.pdf
testPDF_no_extract_no_accessibility_owner_user.pdf
testPDF_no_extract_no_accessibility_owner_empty.pdf
TIKA-1489_v1.patch
This patch keeps Tika's default behavior. Users who want to check permissions
can configure that via {{PDFParserConfig}}.
I created a {{core}} level metadata object {{AccessPermissions}} to capture the
AccessPermission metadata. This is primarily derived from the model for PDFs,
but we can add a few more once we start extracting this information from
MSOffice documents.
If we find other document formats that allow "don't extract content", we can
move {{AccessChecker}} to core and perhaps move that configuration to
{{TikaConfig}}, but until we find other formats that require this, I think it
is better to keep it closely tied to PDFs. I'm open to other ideas, though.
If there are no objections, I'll commit this in a few days.
I am extremely grateful to [~tilman] for opening this issue and for his great
patience in helping me to understand PDF's access permission model.
> PDF Text extraction without permission
> --------------------------------------
>
> Key: TIKA-1489
> URL: https://issues.apache.org/jira/browse/TIKA-1489
> Project: Tika
> Issue Type: Bug
> Affects Versions: 1.7
> Reporter: Tilman Hausherr
> Attachments: TIKA-1489_v1.patch,
> testPDF_no_extract_no_accessibility_owner_empty.pdf,
> testPDF_no_extract_no_accessibility_owner_user.pdf,
> testPDF_no_extract_yes_accessibility_owner_empty.pdf,
> testPDF_no_extract_yes_accessibility_owner_user.pdf
>
>
> In TIKA-1442 text extraction from files like 717226.pdf that don't have text
> extraction permission works. The permissions in PDF files are only enforced
> by the application (i.e. PDFBox), i.e. the text information isn't stored
> separately in encrypted form.
> PDFBox ExtractText command line does throw an exception.
> So I wonder why TIKA is able to extract text. Either TIKA or the PDFBox call
> used bypasses the permission checking.
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