m-holger
0198ff7e48
Merge pull request #1291 from m-holger/fuzz
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In QPDFWordTokenFinder::check limit the token length
2024-09-24 01:55:36 +01:00
m-holger
0aa6b67eea
In QPDFWordTokenFinder::check limit the token length
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Tokens longer than the target cannot be a match and therefore there is no
need to read to the end of token.
2024-09-24 01:32:32 +01:00
m-holger
0e92cf6bf3
Merge pull request #1289 from m-holger/fuzz
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Fix bugs found during fuzzing
2024-09-20 15:52:14 +01:00
m-holger
477fbd9839
Add additional fuzz test cases
2024-09-20 15:28:53 +01:00
m-holger
21f176d374
Add sanity check on trailer /Size entry
2024-09-20 15:28:49 +01:00
m-holger
44a1395194
Refactor QPDF::Xref_table::read_entry and read_bad_entry
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Return results rather than using reference parameters.
Fixes bug in #1272 where parameters were not reinitialized when calling
read_bad_entry from read_entry.
2024-09-20 15:28:34 +01:00
m-holger
7d34b89a69
Merge pull request #1288 from m-holger/fuzz
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In QPDFParser add a limit on total number of errors in one object
2024-09-19 23:58:26 +01:00
m-holger
06a2d955fc
In QPDFParser add a limit on total number of errors in one object
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Currently, QPDFParser gives up attempting to parse an object if 5
near-consecutive bad tokens are encountered. Add a limit of a total of 15
bad tokens in a single object before giving up.
2024-09-19 17:28:26 +01:00
m-holger
ff2a78f579
Merge pull request #1272 from m-holger/xref_table
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Refactor QPDF xref table
2024-09-19 07:58:48 +01:00
m-holger
cb7180b1ba
Move QPDF::ObjCache::end_before_space etc to Xref_table
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Also, delay adjustments for compressed objects until needed by
linearization checks.
2024-09-18 10:25:38 +01:00
m-holger
28c13f5492
Refactor Xref_table::subsections
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Optimistically read subsection headers without reading individual object
entries, assuming that they are 20 bytes long as per the PDF spec. If
problems are encountered, fall back to calling bad_subsections.
2024-09-18 10:25:38 +01:00
m-holger
ad10fa3006
Rename Xref_table::subsections to bad_subsections
2024-09-18 10:25:38 +01:00
m-holger
0f0747b3ae
Refactor QPDF::getXRefTable
2024-09-18 10:25:38 +01:00
m-holger
965f0fcd63
Refactor QPDF::recoverStreamLength
2024-09-18 10:25:38 +01:00
m-holger
98c14e7740
Refactor QPDF::checkLinearizationInternal
2024-09-18 10:25:38 +01:00
m-holger
7775aec33e
Refactor QPDFWriter::preserveObjectStreams
2024-09-18 10:25:38 +01:00
m-holger
a1b646fcca
Refactor Xref_table::Entry
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Replace QPDFXRefEntry with a std::variant of structs.
2024-09-18 10:25:38 +01:00
m-holger
6b9eb14c76
Remove Xref_table::deleted_objects
2024-09-18 10:25:38 +01:00
m-holger
c0020cb17d
Change Xref_table::table to std::vector
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Temporarily disable 3 specific-bugs tests. Remove 'xref size mismatch'
test.
2024-09-18 10:25:38 +01:00
m-holger
91822ae6a1
Refactor Xref_table::reconstruct
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Split reconstruction into two passes - scanning of input for objects and
insertion of objects into the xref table. This allows insertion to take
place in the usual reverse order and removes the need for a separate
insert_reconstructed method.
2024-09-18 10:25:38 +01:00
m-holger
39df5936fe
Refactor Xref_table::read_table
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Rename to Xref_table::process_section.
Process trailer processing subsection entries.
2024-09-18 10:25:38 +01:00
m-holger
ed65619428
Add new methods Xref_table::subsections
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Calculate all subsections before reading subsection entries.
Duplicates some warnings for the time being.
2024-09-18 10:25:38 +01:00
m-holger
cee8d5c92d
Refactor Xref_table::parse_first
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Rename to Xref_table::subsection.
Return results instead of using out parameters.
Take on responsibility for throwing exception and calculation of offset of
first subsection entry.
2024-09-18 10:25:38 +01:00
m-holger
0c56cec6c3
Refactor QPDF::createFromJSON
2024-09-18 10:25:38 +01:00
m-holger
88fd7ca99a
Refactor QPDF::emptyPDF
2024-09-18 10:25:38 +01:00
m-holger
39abb11376
Make all QPDF::Xref_table data members private
2024-09-18 10:25:38 +01:00
m-holger
82419ca013
Add new data member QPDF::Xref_table::table
2024-09-18 10:25:38 +01:00
m-holger
742cc7d87b
Add temporary methods QPDF::Xref_table::size and as_map
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Also, remove redundant clearing of the xref tabl during QPDF destruction.
2024-09-18 10:25:38 +01:00
m-holger
fa03ed3891
Refactor QPDF::removeObject
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Do not remove object from xref table as this is only required when the
the method is called from within QPDF::Xref_table.
2024-09-18 10:25:38 +01:00
m-holger
5fc257f0f7
Add QPDF::Xref_table methods type, offset, stream_number and stream_index
2024-09-18 10:25:38 +01:00
m-holger
d64b14912d
Move QPDF::readTrailer to QPDF::Xref_table
2024-09-18 10:25:38 +01:00
m-holger
3ddc51a9dc
Move QPDF::resolveXRefTable to QPDF::Xref_table
2024-09-18 10:25:38 +01:00
m-holger
ad4688866d
Add new method QPDF::Xref_table::show
2024-09-18 10:25:38 +01:00
m-holger
1e2dcbf03e
Add QPDF::Xref_table members file and tokenizer
2024-09-18 10:25:38 +01:00
m-holger
b1d845e708
Split QPDF member file into file and file_sp to facilitate aliasing
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To be encapsulated later.
2024-09-18 10:25:37 +01:00
m-holger
db06e075ea
Move xref table initialisation from QPDF::parse to QPDF::Xref_table
2024-09-18 10:25:37 +01:00
m-holger
a4db9b3149
Move QPDF::read_xref to QPDF::Xref_table
2024-09-18 10:25:37 +01:00
m-holger
f30a5eb05a
Move QPDF::read_xrefStream to QPDF::Xref_table
2024-09-18 10:25:37 +01:00
m-holger
253d3aee8f
Move QPDF::read_xrefEntry to QPDF::Xref_table
2024-09-18 10:25:37 +01:00
m-holger
3fbff84594
Move QPDF::reconstruct_xref to QPDF::Xref_table
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Also, when recovering trailer from xref streams, pick the last valid
trailer encountered rather than the first.
2024-09-18 10:25:37 +01:00
m-holger
1e072e223a
Move QPDF::insertXrefEntry etc to QPDF::Xref_table
2024-09-18 10:25:37 +01:00
m-holger
0ac37bc956
Add new class QPDF::Xref_table
2024-09-18 10:25:37 +01:00
m-holger
f8e6274a2e
Move QPDF inner class definitions to new QPDF_private.hh
2024-09-18 10:25:37 +01:00
m-holger
d42fda60d5
Amend "recover file with xref stream" test
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Change first xref stream dictionary to point to an invalid root in order
to detect failure to recover the last valid trailer.
2024-09-18 10:25:37 +01:00
m-holger
8f54319f7a
Merge pull request #1179 from m-holger/null
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In FUTURE, treat uninitialized object handles as null
2024-09-18 10:22:04 +01:00
m-holger
4b245364ca
Merge pull request #1285 from m-holger/fuzz
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Adjust fuzzer Pl_Flate memory limits
2024-09-18 00:56:25 +01:00
m-holger
68c2489b80
For qpdf fuzzers adjust the memory limit for Flate filtered streams
2024-09-18 00:13:24 +01:00
m-holger
dcf111a9bc
Apply fuzzer Pl_Flate memory limit only when inflating
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Fixes fuzz issue 71689.
2024-09-18 00:12:44 +01:00
m-holger
266d479735
Refactor QPDF_Array::at
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Change the return type to a std::pair<bool, QPDFObjectHandle> in order to
allow a default constructed object handle (which is currently returned to
indicate failure) to become a valid object.
2024-09-17 09:59:00 +01:00
m-holger
0afaaea22a
Deprecate QPDFObjectHandle::isInitialized and remove from library
2024-09-17 09:59:00 +01:00
