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Provide a convenient way of accessing rectangles.
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This fixes CVE-2018-9918.
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Remove calls to assertPageObject(). All cases in the library that called assertPageObject() work fine if you don't call assertPageObject() because nothing assumes anything that was being checked by that call. Removing the calls enables more files to be successfully processed.
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Prior to this fix, if there was a loop detected in following /Prev pointers in xref streams/tables, it would cause qpdf to lose data. Note that this condition causes many PDF readers to hang or fail.
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The QPDF_String::getUTF8Val() method was not treating strings that weren't explicitly Unicode as PDF Doc Encoded. This only affects characters in the range 0x80 through 0xa0.
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Too many test cases were "miscellaneous".
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Give objects descriptions and context so it is possible to issue warnings instead of fatal errors for attempts to access objects of the wrong type.
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Sometimes it's an offset in an object stream or a content stream, so file position is confusing in some cases.
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Expose Pl_QPDFTokenizer, and have it do more of the work of managing the token filter's pipeline.
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Implement a TokenFilter class and refactor Pl_QPDFTokenizer to use a TokenFilter class called ContentNormalizer. Pl_QPDFTokenizer is now a general filter that passes data through a TokenFilter.
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Adding a trailing newline in content normalization damages files whose contents are split across streams in the middle of tokens. Let QPDFWriter add the newline with the indicator to ignore the newline, which it already does. This changes the way some qdf files look.
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Significant enhancements to the lexer to improve EOF handling and to support comments and spaces as tokens. Various other minor issues were fixed as well.
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This tokenizes outer parts of the file, page content streams, and object streams. It is for exercising the tokenizer in isolation and is being introduced before reworking the lexical layer of qpdf.
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This is useful only for debugging the linearization code.
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Add options to enable the raw encryption key to be directly shown or specified. Thanks to Didier Stevens <didier.stevens@gmail.com> for the idea and contribution of one implementation of this idea.
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Make sure to link from the source tree before linking from the system. In many environments, this is necessary to allow a newly built qpdf to link properly instead of trying to link or resolve libraries from an older installed version.
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If the stream isn't filterable but we call getStreamData, throw a regular exception instead of a logic error so that normal error handling and reporting mechanisms will be used.