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2021-02-21QPDFObjectHandle::copyStreamJay Berkenbilt
2021-02-21Refactor: separate copyStreamData from replaceForeignIndirectObjectsJay Berkenbilt
2021-02-06Remove erroneous handling of /EFF for stream decryptionJay Berkenbilt
I thought /EFF was supposed to be used as a default for decrypting embedded file streams, but actually it's supposed to be advice to a conforming writer about handling new ones. This makes sense since the findAttachmentStreams code, which is not actually needed, was never right.
2021-02-06Make wrong object stream type a warningJay Berkenbilt
2021-01-26NNTree: rework iterators to be more memory efficientJay Berkenbilt
Keep a std::pair internal to the iterators so that operator* can return a reference and operator-> can work, and each can work without copying pairs of objects around.
2021-01-24Use new QPDF{Name,Number}TreeObjectHelper APIJay Berkenbilt
2021-01-24Use QPDFNameTreeObjectHelper's iterator directlyJay Berkenbilt
2021-01-11Treat /EmbeddedFiles as a proper name treeJay Berkenbilt
If we ever had an encrypted file with different filters for attachments and either the /EmbeddedFiles name tree was deep or some of the file specs didn't have /Type, we would have overlooked those as attachment streams. The code now properly handles /EmbeddedFiles as a name tree.
2021-01-06Warn rather than segv on access after closing input source (fixes #495)Jay Berkenbilt
2021-01-04Prepare version 10.1.0release-qpdf-10.1.0Jay Berkenbilt
2020-12-28Implement user-provided stream filtersJay Berkenbilt
Refactor QPDF_Stream to use stream filter classes to handle supported stream filters as well.
2020-11-21Prepare 10.0.4 releaserelease-qpdf-10.0.4Jay Berkenbilt
2020-11-04Ignore unused field in xref entry, avoiding range error (fixes #482)Jay Berkenbilt
2020-10-31Prepare 10.0.3 releaserelease-qpdf-10.0.3Jay Berkenbilt
2020-10-31Add comments explaining the foreign object copying codeJay Berkenbilt
These are the comments I would have liked to have been able to read while fixing #449 and #478.
2020-10-31Fix foreign stream copying bug (fixes #478)Jay Berkenbilt
This reverts an incorrect fix to #449 and codes it properly. The real problem was that we were looking at the local dictionaries rather than the foreign dictionaries when saving the foreign stream data. In the case of direct objects, these happened to be the same, but in the case of indirect objects, the object references could be pointing anywhere since object numbers don't match up between the old and new files.
2020-10-27Prepare 10.0.2 releaserelease-qpdf-10.0.2Jay Berkenbilt
2020-10-27Revert removal of unreadCh change for performanceJay Berkenbilt
Turns out unreadCh is much more efficient than seek(-1, SEEK_CUR). Update comments and code to reflect this.
2020-10-22Avoid leak by resolving object streams more than once (fuzz issue 23642)Jay Berkenbilt
2020-10-22Minor code cleanupJay Berkenbilt
* Return rather than exiting from realmain in qpdf.cc * Remove extraneous blank line * Don't assign temporary to const reference
2020-10-22Obscure bug fix copying foreign streams in special cases (fixes #449)Jay Berkenbilt
Specifically, if a stream had its stream data replaced and had indirect /Filter or /DecodeParms, it would result in non-silent loss of data and/or internal error.
2020-10-21Protect numeric conversion against user's locale (fixes #459)Jay Berkenbilt
2020-10-18Stop using InputSource::unreadChJay Berkenbilt
2020-10-17Check integer overflow in resolveObjectsInStreamDean Scarff
Fixes a crash found by fuzzing.
2020-04-09Prepare 10.0.1 releaserelease-qpdf-10.0.1Jay Berkenbilt
2020-04-06Prepare 10.0.0 releaseJay Berkenbilt
2020-04-06Allow propagation of errors and retry through StreamDataProviderJay Berkenbilt
StreamDataProvider::provideStreamData now has a rich enough API for it to effectively proxy to pipeStreamData.
2020-04-04Use deterministic assignments for unique_idDean Scarff
Fixes qpdf/qpdf#419
2020-01-27Prepare 9.1.1 releaserelease-qpdf-9.1.1Jay Berkenbilt
2019-11-17Prepare 9.1.0 releaserelease-qpdf-9.1.0Jay Berkenbilt
2019-11-10Prepare 9.1.rc1 releaseJay Berkenbilt
2019-11-04Fix two additional fuzz test casesJay Berkenbilt
2019-10-22Add QPDF::getXRefTable()Masamichi Hosoda
2019-10-22Exclude signature dictionary from compressible objectsMasamichi Hosoda
It seems better not to compress signature dictionaries. Various PDF digital signing tools, including Adobe Acrobat Reader DC, do not compress signature dictionaries. Table 8.93 "Entries in a signature dictionary" in PDF 1.5 reference describes that /ByteRange in the signature dictionary shall be used to describe a digest that does not include the signature value (/Contents) itself. The byte ranges cannot be determined if the dictionary is compressed.
2019-10-13Prepare 9.0.2 releaserelease-qpdf-9.0.2Jay Berkenbilt
2019-09-20Prepare 9.0.1 releaseJay Berkenbilt
2019-09-18Fix fuzz issue 16953 (overflow checking in xref stream index)Jay Berkenbilt
2019-09-01Prepare 9.0.0 releaserelease-qpdf-9.0.0Jay Berkenbilt
2019-08-31Add methods QPDF::anyWarnings and QPDF::closeInputSourceJay Berkenbilt
2019-08-28Fix fuzz issues 15316 and 15390Jay Berkenbilt
2019-08-27Seek in two stages to avoid overflowJay Berkenbilt
When seeing to a position based on a value read from the input, we are prone to integer overflow (fuzz issue 15442). Seek in two stages to move the overflow check into the input source code.
2019-08-27Fix fuzz issue 15387 (overflow checking xref size)Jay Berkenbilt
2019-08-24Track separately whether password was user/owner (fixes #159)Jay Berkenbilt
2019-08-22Protect against coding error of re-entrant parsingJay Berkenbilt
2019-08-20Accept extraneous space before xref (fixes #341)Jay Berkenbilt
2019-08-20Accept extraneous space after stream keyword (fixes #329)Jay Berkenbilt
2019-08-20Handle invalid name tokens symmetrically for PDF < 1.2 (fixes #332)Jay Berkenbilt
2019-08-18Improve efficiency of fixDanglingReferencesJay Berkenbilt
2019-06-22Remove QPDF::copyForeignObject with unused parameterJay Berkenbilt
2019-06-21Fix sign and conversion warnings (major)Jay Berkenbilt
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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