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2019-01-06Move encryption parameters into a classJay Berkenbilt
2019-01-04Don't call assert while checking linearization data (fixes #209, #231)Jay Berkenbilt
Instead of calling assert for problems found during checking linearization data, throw an exception which is later caught and issued as an error. Ideally we would handle errors more robustly, but this is still a significant improvement.
2019-01-04Fix dangling references (fixes #240)Jay Berkenbilt
On certain operations, such as iterating through all objects and adding new indirect objects, walk through the entire object structure and explicitly resolve any indirect references to non-existent objects. That prevents new objects from springing into existence and causing the previously dangling references to point to them.
2019-01-03Fix seg fault on empty xref stream (fixes #263)Jay Berkenbilt
Thanks to @p-cher for supplying a patch.
2018-08-18Prepare 8.2.1 releaserelease-qpdf-8.2.1Jay Berkenbilt
2018-08-16Prepare 8.2.0 releaserelease-qpdf-8.2.0Jay Berkenbilt
2018-06-23Prepare 8.1.0 releaserelease-qpdf-8.1.0Jay Berkenbilt
2018-06-22Add method to get count of objects in QPDFJay Berkenbilt
2018-03-06Prepare 8.0.2 releaserelease-qpdf-8.0.2Jay Berkenbilt
2018-03-05Treat loop in xref tables as damage (fixes #192)Jay Berkenbilt
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.
2018-03-04Prepare 8.0.1 releaserelease-qpdf-8.0.1Jay Berkenbilt
2018-02-25Release 8.0.0release-qpdf-8.0.0Jay Berkenbilt
2018-02-258.0.rc3release-qpdf-8.0.rc3Jay Berkenbilt
2018-02-258.0.rc2release-qpdf-8.0.rc2Jay Berkenbilt
2018-02-25Update version to 8.0.rc1release-qpdf-8.0.rc1Jay Berkenbilt
This is for testing the release process, particularly as it pertains to AppImage creation.
2018-02-21Bump version number and sonameJay Berkenbilt
Bump to an alpha release. This version is not being widely released but is being used to push the new shared library version through the debian packaging system and to test out github releases.
2018-02-19More robust handling of type errorsJay Berkenbilt
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.
2018-02-19Include omitted object description in error messageJay Berkenbilt
2018-02-19Include filename in object stream parse errorJay Berkenbilt
2018-02-05Prepare 7.1.1 releaserelease-qpdf-7.1.1Jay Berkenbilt
2018-02-04Fix offset in error messageJay Berkenbilt
2018-01-15Update version numbers for 7.1.0release-qpdf-7.1.0Jay Berkenbilt
2018-01-14Allow raw encryption key to be specifiedJay Berkenbilt
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.
2017-12-25Correct errors in PNG filters and make use from libraryJay Berkenbilt
2017-09-16Prepare 7.0.0 releaserelease-qpdf-7.0.0Jay Berkenbilt
2017-09-12Improve message for stream decoding errorJay Berkenbilt
Tweak the message so that we inform the user that we are mitigating data loss.
2017-08-29Replace all atoi calls with QUtil::string_to_intJay Berkenbilt
The latter catches underflow/overflow.
2017-08-26Detect xref pointer infinite loop (fixes #149)Jay Berkenbilt
2017-08-22Bump soname to 18 and version to 7.0.b1release-qpdf-7.0.b1Jay Berkenbilt
2017-08-22Limit token length during xref recoveryJay Berkenbilt
While scanning the file looking for objects, limit the length of tokens we allow. This prevents us from getting caught up in reading a file character by character while digging through large streams.
2017-08-22Fix logic error in recoveryJay Berkenbilt
A stray semicolon caused a condition to be incorrectly applied during stream length recovery.
2017-08-22Push QPDF member variables into a nested classJay Berkenbilt
Pushing member variables into a nested class enables addition of new member variables without breaking binary compatibility.
2017-08-21Enable finer grained control of stream decodingJay Berkenbilt
This commit adds several API methods that enable control over which types of filters QPDF will attempt to decode. It also adds support for /RunLengthDecode and /DCTDecode filters for both encoding and decoding.
2017-08-12Prevent a division by zero error (fixes #141)Jay Berkenbilt
Bad /W in an xref stream could cause a division by zero error. Now this is handled as a special case.
2017-08-11Read xref table without PCREJay Berkenbilt
Also accept more errors than before.
2017-08-11Reconstruct xref without PCREJay Berkenbilt
2017-08-11Improve stream length recoveryJay Berkenbilt
Eliminate PCRE and find endobj not preceded by endstream. Be more lax about placement of endstream and endobj.
2017-08-11Find xref without PCREJay Berkenbilt
2017-08-11Find starxref without PCREJay Berkenbilt
2017-08-11Find header without PCREJay Berkenbilt
2017-08-11Allow QPDFTokenizer::readToken to return bad tokensJay Berkenbilt
Sometimes we want to ignore bad tokens rather than having them throw an exception. A coverage case is commented out here and added in a later commit.
2017-07-30Catch more exceptions while resolving objectsJay Berkenbilt
2017-07-30When recover stream length, indicate the length (fixes #44)Jay Berkenbilt
2017-07-29Handle zlib data errors better (fixes #106)Jay Berkenbilt
2017-07-29Better recovery of bad stream start (fixes #104)Jay Berkenbilt
2017-07-29Use 1.2 as the version if we can't read it from the headerJay Berkenbilt
The code was using 1.0, but we use /FlateDecode, which didn't appear until 1.2.
2017-07-29Add option to preserve unreferenced objectsJay Berkenbilt
2017-07-29Explicitly check root dictionary typeJay Berkenbilt
Very badly corrupted files may not have a retrievable root dictionary. Handle that as a special case so that a more helpful error message can be provided.
2017-07-28Add precheck streams capabilityJay Berkenbilt
When requested, QPDFWriter will do more aggress prechecking of streams to make sure it can actually succeed in decoding them before attempting to do so. This will allow preservation of raw data even when the raw data is corrupted relative to the specified filters.
2017-07-28Convert many more errors to warningsJay Berkenbilt
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