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https://issues.apache.org/jira/browse/PDFBOX-4925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adomas Birštunas updated PDFBOX-4925:
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Attachment: StreamValidationProcessFixedBugPdfBox_4925.java
Description:
org.apache.pdfbox.preflight.process.StreamValidationProcess Length of the
stream validation is invalid.
If Stream dictionray contains "\nstream", it find wrong stream start position.
Therefore, it reports an error for the wrong stream length, despite stream
length is correct.
PdfWithEmbeddedFileStream.pdf - is an example of PDF containing stream for
embedded file stream, which raises an error
"ERROR_SYNTAX_STREAM_LENGTH_INVALID: Body Syntax error, Stream length is
invalid [cObj=COSObject\{18, 0}; defined length=372; buffer2= V6 t ".
The problem was caused by the "/Subtype /application#2Foctet-stream" which
contains "stream\n".
Trying to find stream start position it is not enough to search for the
"stream".
As a fix I suggest first to skip dictionary bytes.
The fixing code may be find in StreamValidationProcessFixedBugPdfBox_4925.java.
was:
org.apache.pdfbox.preflight.process.StreamValidationProcess Length of the
stream validation is invalid.
If Stream dictionray contains "\nstream", it find wrong stream start position.
Therefore, it reports an error for the wrong stream length, despite stream
length is correct.
PdfWithEmbeddedFileStream.pdf - is an example of PDF containing stream for
embedded file stream, which raises an error
"ERROR_SYNTAX_STREAM_LENGTH_INVALID: Body Syntax error, Stream length is
invalid [cObj=COSObject\{18, 0}; defined length=372; buffer2= V6 t ".
The problem was caused by the "/Subtype /application#2Foctet-stream" which
contains "stream\n".
Trying to find stream start position it is not enough to search for the
"stream".
As a fix I suggest first to skip dictionary bytes.
The fixing code may be find in StreamValidationProcessFixedBug.java.
> Invalid stream Length validation in StreamValidationProcess
> -----------------------------------------------------------
>
> Key: PDFBOX-4925
> URL: https://issues.apache.org/jira/browse/PDFBOX-4925
> Project: PDFBox
> Issue Type: Bug
> Components: Preflight
> Affects Versions: 2.0.19
> Reporter: Adomas Birštunas
> Priority: Major
> Attachments: PdfWithEmbeddedFileStream.pdf,
> StreamValidationProcessFixedBugPdfBox_4925.java
>
>
> org.apache.pdfbox.preflight.process.StreamValidationProcess Length of the
> stream validation is invalid.
> If Stream dictionray contains "\nstream", it find wrong stream start position.
> Therefore, it reports an error for the wrong stream length, despite stream
> length is correct.
> PdfWithEmbeddedFileStream.pdf - is an example of PDF containing stream for
> embedded file stream, which raises an error
> "ERROR_SYNTAX_STREAM_LENGTH_INVALID: Body Syntax error, Stream length is
> invalid [cObj=COSObject\{18, 0}; defined length=372; buffer2= V6 t ".
> The problem was caused by the "/Subtype /application#2Foctet-stream" which
> contains "stream\n".
> Trying to find stream start position it is not enough to search for the
> "stream".
> As a fix I suggest first to skip dictionary bytes.
> The fixing code may be find in
> StreamValidationProcessFixedBugPdfBox_4925.java.
>
>
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