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This makes all integer type conversions that have potential data loss explicit with calls that do range checks and raise an exception. After this commit, qpdf builds with no warnings when -Wsign-conversion -Wconversion is used with gcc or clang or when -W3 -Wd4800 is used with MSVC. This significantly reduces the likelihood of potential crashes from bogus integer values. There are some parts of the code that take int when they should take size_t or an offset. Such places would make qpdf not support files with more than 2^31 of something that usually wouldn't be so large. In the event that such a file shows up and is valid, at least qpdf would raise an error in the right spot so the issue could be legitimately addressed rather than failing in some weird way because of a silent overflow condition.
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This is the type we need for the underlying zlib implementation.
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Change from unsigned long to int since we pass enumerated type values to this field.
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Fix C++ exception handling when -fvisibility=hidden Ensure that QPDFExc and QPDFSystemError are marked visible, so that their typeinfo will not be suppressed when -fvisibility=hidden. Details: https://gcc.gnu.org/wiki/Visibility -
Full parser context QPDF.cc(2): #include ..\..\..\..\src\include\qpdf\QPDF.hh QPDF.hh(48): class QPDF QPDF.hh(1380): decision to instantiate: QPDF::ResolveRecorder::ResolveRecorder(QPDF *,const QPDFObjGen &) --- Resetting parser context for instantiation... QPDF.hh(799): parsing: QPDF::ResolveRecorder::ResolveRecorder(QPDF *,const QPDFObjGen &) -
Full parser context Pl_QPDFTokenizer.cc(1): #include ..\..\..\..\src\include\qpdf\Pl_QPDFTokenizer.hh Pl_QPDFTokenizer.hh(29): #include ..\..\..\..\src\include\qpdf/QPDFObjectHandle.hh QPDFObjectHandle.hh(51): class QPDFObjectHandle QPDFObjectHandle.hh(1052): decision to instantiate: PointerHolder<QPDFObject> QPDFObjectHandle::ObjAccessor::getObject(QPDFObjectHandle &) --- Resetting parser context for instantiation... QPDFObjectHandle.hh(909): parsing: PointerHolder<QPDFObject> QPDFObjectHandle::ObjAccessor::getObject(QPDFObjectHandle &) -
Full parser context QPDF.cc(2): #include ..\..\..\..\src\include\qpdf\QPDF.hh QPDF.hh(47): class QPDF -
Full parser context QPDF.cc(2): #include ..\..\..\..\src\include\qpdf\QPDF.hh QPDF.hh(46): class QPDF
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Do not include the trailing EI, and handle cases where EI is not preceded by a delimiter. Such cases have been seen in the wild.
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We've actually seen a PDF file in the wild that contained EI surrounded by delimiters inside the image data, which confused qpdf's naive code. This significantly improves EI detection.
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Add a version of expectInlineImage that takes an input source and searches for EI. This is in preparation for improving the way EI is found. This commit just refactors the code without changing the functionality and adds tests to make sure the old and new code behave identically.
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Make explicit that copyForeignObject can be used on page objects and will copy them properly but not update the pages tree.
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When linearizing a file or getting the list of all pages in a file, detect if the pages tree contains a duplicated page object and, if so, shallow copy it. This makes it possible to have a one to one mapping of page positions to page objects.
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Support conversion of pages to form XObjects and placement of form XObjects on pages.
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Add getAttribute for handling inheritable page attributes, and fix getPageImages and annotation flattening code to use it.
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mingw doesn't like it when you don't inline empty virtual destructors.
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Setting encryption permissions for R >= 3 set permission bits in groups corresponding to menu options in Acrobat 5. The new API allows the bits to be set individually.
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The original QPDF is only required now when the source QPDFObjectHandle is a stream that gets its stream data from a QPDFObjectHandle::StreamDataProvider.