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vikings.pdf: Cross-reference stream has invalid W key. #46

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kleuter opened this issue Oct 6, 2023 · 3 comments
Closed

vikings.pdf: Cross-reference stream has invalid W key. #46

kleuter opened this issue Oct 6, 2023 · 3 comments
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@kleuter
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kleuter commented Oct 6, 2023

The pdfiototext tool fails to parse the file:
https://www.dropbox.com/scl/fi/xpktv4rrozm22sxjuyarp/vikings.pdf?rlkey=e6rdkbbgjg45d2mfypdrjwd8a&dl=0

System Information:

  • OS: Windows 10, Visual Studio 2019
@michaelrsweet
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OK, so this file, generated by some sort of Microsoft project, contains a cross reference stream with a W value of [1 4 3]. The third value specifies the size of the "generation number" field in bytes, where the generation number is an integer between 0 and 65535. Normally this field should be 1 or 2 bytes in length (1 allows generation numbers from 0 to 255, 2 allows the full range of 0 to 65535). Having anything larger is puzzling, but since other PDF consuming applications seem to deal with this OK I'll just allow it and peg values > 65535 as required by the PDF standards.

@michaelrsweet michaelrsweet self-assigned this Oct 6, 2023
@michaelrsweet michaelrsweet added bug Something isn't working priority-low labels Oct 6, 2023
@michaelrsweet michaelrsweet added this to the Stable milestone Oct 6, 2023
michaelrsweet added a commit that referenced this issue Oct 6, 2023
@michaelrsweet
Fix a couple issues with parsing PDF files produced by Microsoft Repo…
7f6ffcd 
…rting

Services (Issue #46)

- Odd cross-reference stream containing 3-byte generation number field for this
  16-bit value
- Odd empty hex strings
@michaelrsweet
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This file also has empty binary (hex) strings...

[master 7f6ffcd] Fix a couple issues with parsing PDF files produced by Microsoft Reporting Services (Issue #46)

@kleuter
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kleuter commented Oct 6, 2023

thanks, Michael!

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