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Table 8.93 "Entries in a signature dictionary" in PDF 1.5 reference describes that the value of Contents entry is a hexadecimal string representation when ByteRange is specified. This commit makes QPDF always uses hexadecimal strings representation instead of literal strings for it.
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Use destructors to pop the pipeline stack, and ensure that code that pops the stack is actually popping the intended thing.
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Just because we know an indirect reference is null, doesn't mean we shouldn't keep it indirect.
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This change works around STL problems with Embarcadero C++ Builder version 10.2, but std::vector is more common than std::list in qpdf, and this is a relatively new API, so an API change is tolerable. Thanks to Thorsten Schöning <6223655+ams-tschoening@users.noreply.github.com> for the fix.
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This also reverts the addition of a new checkLinearization that distinguishes errors from warnings. There's no practical distinction between what was considered an error and what was considered a warning.
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Use PointerHolder in several places where manually memory allocation and deallocation were being used. This helps to protect against memory leaks when exceptions are thrown in surprising places.
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This code was essentially duplicated between test_driver and standalone_fuzz_target_runner.
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In a small number of cases, it makes sense to replace an overloaded function with a function that takes a default argument. We can do this now because we've already broken binary compatibility since the last release.
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Have classes contain only a single private member of type PointerHolder<Members>. This makes it safe to change the structure of the Members class without breaking binary compatibility. Many of the classes already follow this pattern quite successfully. This brings in the rest of the class that are part of the public API.
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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
