m-holger
c1cd3ec8a0
In QPDF::processXRefIndex check number of objects in subsection is > 0
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Fixes oss-fuzz 70055
2024-07-06 16:09:50 +01:00
m-holger
f0ded6bca8
Add test case for self-referential object streams
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Previous test case was lost in #1221 . Test file was created from
object-stream.pdf by adding a reference to itself into object stream 1 0.
2024-07-04 20:40:47 +01:00
m-holger
edf3509b78
Treat corrupt JPEG streams as unfilterable
2024-07-04 17:06:42 +01:00
Jay Berkenbilt
598268f6ad
Add setMaxWarnings rather than using conditional compilation
2024-07-03 15:44:44 +01:00
Jay Berkenbilt
65bd8bc57d
Add DCT decompression config methods in favor of compile-time changes
...
As a rule, we should avoid conditional compilation is it always causes
code paths that are sometimes not even seen lexically by the compiler.
Also, we want the actual code being fuzzed to be as close as possible
to the real code. Conditional compilation is suitable to handle
underlying system differences.
Instead, favor configuration using callbacks or other methods that can
be triggered in the places where they need to be exercised.
2024-07-03 15:43:38 +01:00
m-holger
a367e56afc
In QPDF::resolveObjectsInStream avoid creating xref table entries
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Invalid entries are created when objects in the stream do not have
an existing xref entry.
2024-07-02 01:16:23 +01:00
m-holger
6d640c569a
Add additional object id sanity checks
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Ensure objects with impossibly large ids are ignored.
2024-07-02 01:16:23 +01:00
m-holger
42c511198b
Suppress excessive warnings while fuzzing
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Add extra fuzz test case and amend memory limit for Pl_DCT.
2024-07-02 01:16:23 +01:00
m-holger
9081ac69cd
Merge pull request #1227 from m-holger/fuzz6
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Refine #1225
2024-06-30 01:50:36 +01:00
m-holger
18c52640cc
Refine #1225
2024-06-29 14:47:03 +01:00
m-holger
0a081e1f09
In QPDFOutlineObjectHelper detect loops in direct children
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Also, add diagnostic messages in qpdf_fuzzer and additional fuzz test case.
2024-06-29 12:38:07 +01:00
m-holger
c93b149b4d
Limit memory used for JPEG decompression during fuzzing
2024-06-28 21:15:45 +01:00
m-holger
6ed2880405
Merge pull request #1224 from m-holger/fuzz3
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Fix #1170
2024-06-27 08:47:42 +01:00
m-holger
732aab8610
Merge pull request #1222 from m-holger/fuzz2
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In PL_DCT add option to limit the size of uncompressed corrupt data
2024-06-27 08:20:01 +01:00
m-holger
8ae3ef28ac
Fix #1170
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In QPDF::read_xrefEntry add buffer overflow test for first eol character.
Overlong f1 or f2 entries consisting only of zeros could cause a buffer
overflow.
Add fuzz testcase 69913.
2024-06-27 08:17:58 +01:00
m-holger
3d569e2171
Merge pull request #1221 from m-holger/fuzz
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Refine handling of severely damaged files
2024-06-27 01:18:37 +01:00
m-holger
d83cf43811
In PL_DCT add option to limit the size of uncompressed corrupt data
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Also, apply limit in dct_fuzzer
2024-06-26 11:57:29 +01:00
m-holger
4a8c821e3e
In QPDF::reconstruct_xref add sanity check for object ids
2024-06-25 15:46:47 +01:00
m-holger
e62973d277
In QPDF check for page tree after reading xref table
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Also add new fuzz test case.
2024-06-25 15:18:54 +01:00
m-holger
295f62f041
Merge pull request #1170 from m-holger/readxref
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Refactor QPDF::parse_xrefEntry
2024-06-19 20:08:44 +01:00
m-holger
ce5b864c53
Merge pull request #1201 from m-holger/xref_stream
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QPDF::processXRefStream
2024-06-18 20:21:39 +01:00
Jay Berkenbilt
5e121c9690
Handle null form field from annotation ( fixes #1189 )
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A file that has Widget annotations that can't be mapped back to form
fields would crash qpdf json.
2024-06-18 08:51:15 -04:00
Jay Berkenbilt
167057411e
Format code
2024-06-07 08:07:51 -04:00
Jay Berkenbilt
d17f11e721
Make QPDF::updateObjectMaps iterative
2024-06-06 15:22:14 -04:00
m-holger
2b0c2da720
Refactor QPDF::processXRefStream
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Change the processed Index array to a vector of <first object, number of
entries> pairs.
2024-05-22 18:53:30 +01:00
m-holger
7477ea7828
Add new private method QPDF::processXRefSize
2024-05-22 17:07:42 +01:00
m-holger
f74b28f0d1
Add new private method QPDF::processXRefW
2024-05-22 17:07:37 +01:00
m-holger
0186d60dcf
Add new private method QPDF::processXRefIndex
2024-05-22 17:07:28 +01:00
m-holger
7aa5027bf8
Refactor QPDF::procesXRefStream
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Add closure damaged to create damagedPDF exceptions.
2024-05-22 17:07:16 +01:00
m-holger
1737902a5e
Refactor QPDF::processXRefStream
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Tune processing of subsections.
2024-05-21 20:31:52 +01:00
m-holger
f1c774f13f
Refactor QPDF::processXRefStream
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Tune pointer arithmetic.
2024-05-21 20:31:40 +01:00
m-holger
8cd50e0e3e
Fix QPDF::tableSize
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Apply temporary fix to deal with fuzz case 68915.
(Error is an integer overflow which would immediately cause a runtime error
as a result of a call to QInitCQIntC::to_size.)
2024-05-21 12:50:19 +01:00
m-holger
6f09069f43
Further refactor QUtil::call_main_from_wmain
2024-05-17 10:31:50 +01:00
m-holger
602d5eb61d
Refactor QUtil::call_main_from_wmain
2024-05-16 23:10:28 +01:00
m-holger
02e89bbe47
Fix bug in QPDFWriter::preserveObjectStreams
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Code failed to allow for QPDF::getCompressibleObjSet deleting objects
from the object cache in case of multiple entries for the same object id.
Add fuzz test case 68668.
2024-05-04 10:55:30 +01:00
m-holger
e85b98b7e8
Guard against object id == std::numeric_limits<int> in QPDF::insertReconstructedXrefEntry
2024-04-30 12:38:02 +01:00
m-holger
60c7d594b8
In QPDF::filterCompressedObjects ignore objects not in QPDFWriter tables
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Add fuzz case 68377.
2024-04-30 10:46:06 +01:00
m-holger
972cbf103d
In QPDF::processXRefStream avoid inserting objed id 0 into the xref table
2024-04-30 10:38:59 +01:00
Jay Berkenbilt
0bb1458f38
Merge pull request #1161 from m-holger/writer
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Tune QPDFWriter
2024-04-28 14:44:06 -04:00
m-holger
aa2e0d23f0
In QPDFWriter::writeLinearized use object table obj in call to getLinearizedParts
2024-03-08 10:41:24 +00:00
m-holger
97d78c75ff
In QPDFWriter::writeLinearized use object table obj in call to optimize
2024-03-08 10:33:42 +00:00
m-holger
0df0d00c58
Add method QPDF::Writer::getCompressibleObjSet
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Create set without creation of an intermediate vector.
2024-03-08 10:20:12 +00:00
m-holger
ae00ee6119
Replace QPDF::Writer::getObjectStreamData with getXRefTable
2024-03-08 10:10:31 +00:00
m-holger
ef3a8025fb
In QPDFWriter replace map lenghts with ObjTable new_obj
2024-03-08 10:06:14 +00:00
m-holger
ccad589f7d
In QPDFWriter replace map xref with new ObjTable new_obj
2024-03-08 10:05:57 +00:00
m-holger
47cf4e3a50
In QPDFWriter change object_stream_to_objects to a map of vectors.
2024-03-08 10:04:54 +00:00
m-holger
2fa93e79b4
In QPDFWriter replace map object_to_object_stream with ObjTable obj
2024-03-08 09:59:56 +00:00
m-holger
84e25919cb
In QPDFWriter replace map obj_renumber_no_gen with ObjTable obj
2024-03-08 09:36:47 +00:00
m-holger
8791b5f8d0
In QPDFWriter replace map obj_renumber with a new object table obj
2024-03-08 09:36:22 +00:00
m-holger
72bd486337
Refactor QPDF::parse_xrefEntry
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Move reading of the entry from read_xrefTable to parse_xrefEntry.
Split parse_xrefEntry into two new methods read_xrefEntry and
read_bad_xrefEntry. read_xrefEntry is optimised for reading
correct entries. To handle incorrect entries it calls read_bad_xrefEntry,
which is largely unchanged from parse_xrefEntry.
2024-03-07 15:33:27 +00:00
