m-holger
bcf56e5333
Merge pull request #1269 from m-holger/hybrid
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Fix handling of hybrid reference files in QPDF::read_xrefTable
2024-09-17 09:50:59 +01:00
m-holger
61f7d97b20
Merge pull request #1283 from m-holger/fuzz
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Fix #1242
2024-09-17 00:19:52 +01:00
m-holger
54ac92eb1d
Merge pull request #1271 from m-holger/rsl
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Fix QPDF::recoverStreamLength
2024-09-16 20:38:14 +01:00
m-holger
75091093fe
Merge pull request #1280 from m-holger/streams
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Tidy QPDF_Stream
2024-09-16 19:52:24 +01:00
m-holger
ddfa3a24f0
Merge pull request #1281 from m-holger/input
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Replace some std::shared_ptr parameters with reference parameters
2024-09-16 17:59:53 +01:00
m-holger
9ba6e070a1
Fix #1242
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Ensure QPDF m->all_pages and invalid_page_found are reset if
getAllPagesInternal throws an exception.
Fixes fuzz case 71624.
2024-09-16 16:04:43 +01:00
m-holger
5d25aac6c7
In QPDFParser constructor change input parameter to InputSource&
2024-09-05 15:30:32 +01:00
m-holger
258343fcc9
In QPDF::readToken change input parameter to InputSource&
2024-09-05 15:23:28 +01:00
m-holger
20edfb3f91
In QPDF::damagedPDF change input parameter to InputSource&
2024-09-05 15:13:30 +01:00
m-holger
83e0f8da88
Tidy QPDF_Stream
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1. Make class final
2. Pass og parameter by value
3. Properly initialize qpdf and og
Also, tweak QPDF::replaceObject to allow stream replacement without
violating the requirement that streams must always be indirect objects.
Also, remove QPDF::reserveStream as it does not do what the name implies
and having this as a separate methods does not aid code readability.
2024-09-04 16:00:57 +01:00
m-holger
7777ea84e7
Add new method ObjTable::emplace_back
2024-08-31 21:03:37 +01:00
m-holger
4badc78aea
Remove methods ObjTable::initialize
2024-08-31 15:01:45 +01:00
m-holger
0d08f65cb8
Add new method ObjTable::resize
2024-08-31 14:20:16 +01:00
m-holger
68ac2179bd
In ObjTable change maximum allowable object id to std::vector<T>::max_size()
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Given that the PDF spec requires the xref table to contain entries for all
object ids <= the maximum id present in a PDF document, max_size is a
qpdf implementation limitation for legitimate object ids.
2024-08-31 12:55:53 +01:00
m-holger
64f9b7b242
Refactor QPDFObjectHandle::getTypeName
2024-08-27 10:39:33 +01:00
m-holger
8ed10d71ea
In qpdf_fuzzer and dct_fuzzer add a scan limit for Pl_DCT
2024-08-25 17:03:26 +01:00
m-holger
ef49291682
In QPDF::readObjectAtOffset fail early on 'expect n n obj'
2024-08-23 14:09:20 +01:00
m-holger
0b3debaf86
Merge pull request #1253 from m-holger/pl_t
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Refactor Pl_QPDFTokenizer
2024-08-21 18:29:55 +01:00
m-holger
c02cb9a720
Fix QPDF::recoverStreamLength
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Ensure the the recovered stream end is not part of a different object.
Test file is bad24.pdf with stream 4 'endstream' corrupted.
2024-08-20 15:14:01 +01:00
m-holger
42cd7a98ad
In QPDF::recoverStreamLength mark unreachable code
2024-08-20 12:52:33 +01:00
m-holger
f2228b1f88
Fix handling of hybrid reference files in QPDF::read_xrefTable
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QPDF::read_xrefTable ignores type 0 entries for objects in a section if an
associates XRefStm has an entry for the same object.
The spec states:
When the conforming reader searches for an object, if an entry is not
found in any given standard cross-reference section, the search shall
proceed to a cross-reference stream specified by the XRefStm entry
before looking in the previous cross-reference section,
If a deleted entry is found in a section, the XRefStm is not searched
according to the standard.
2024-08-16 15:58:55 +01:00
m-holger
0eb29c7357
If Pl_Flate memory limit is exceeded do not attempt 'finish' processing
2024-08-09 11:08:30 +01:00
m-holger
0663f1f8db
Guard against 0 byte writes in Pl_Buffer and Pl_String
2024-08-07 16:19:16 +01:00
m-holger
06001ed25b
Refactor the creation of unresolved objects
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Create unresolved objects only for objects in the xref table (except during
parsing of the xref table). Do not add indirect nulls into the the object
cache as the result of a cache miss during a call to getObject except
during parsing or creation/updating from JSON. To support this behaviour,
add new private methods getObjectForParser and getObjectForJSON.
As a result of this change, dangling references are treated as direct nulls
rather than indirect nulls.
2024-08-06 12:22:09 +01:00
m-holger
87ee8ad071
In QPDFParser constructor add add parameter parse_pdf
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Prepare for treating indirect references differently depending on whether
we are parsing a PDF file (in which case reference to objects not in the
xref table are null even if they are in the object cache) or whether parse
from user code (in which case an indirect reference can refer to a user
created object).
2024-08-06 10:02:07 +01:00
m-holger
7a1ec75ee1
Fix writing reals with trailing '.' as JSON ( fixes #1261 )
2024-08-06 01:09:48 +01:00
m-holger
3bab4cf394
Refactor Pl_RunLength::decode
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Buffer output locally.
Add qpdf_fuzzer test case.
2024-08-03 15:52:45 +01:00
m-holger
99f3a7b5a3
In QPDFWriter::writeLinearized remember whether streams are filtered
2024-08-02 21:05:17 +01:00
m-holger
634d924986
In QPDFWriter::willFilterStream remember unfilterable streams
2024-08-02 19:23:17 +01:00
m-holger
2bb9e06d1e
In qpdf_fuzzer add a memory limit for Pl_Flate
2024-07-28 19:54:38 +01:00
m-holger
aa4f288291
Refactor xref reconstruction
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Avoid unnecessary rescanning of lines and repositioning of input file.
Limit max size of tokens.
2024-07-28 18:03:59 +01:00
m-holger
1536a76071
Refactor Pl_QPDFTokenizer::finish
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Remove unnecessary use of shared pointers and avoid unnecessary string
creation.
2024-07-27 18:55:43 +01:00
m-holger
986a253cdd
Overload QPDFTokenizer::findEI to take a InputSource&
2024-07-27 18:27:49 +01:00
m-holger
4783b22312
In ContentNormalizer::handleToken refactor handling of space tokens
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Avoid writing each space char individually.
2024-07-27 18:06:12 +01:00
m-holger
ffe462e67e
In ContentNormalizer::handleToken refactor handling of string and name tokens
2024-07-27 16:49:27 +01:00
m-holger
959ae4b4da
Avoid unnecessary string copies in ContentNormalizer::handleToken
2024-07-27 16:33:17 +01:00
m-holger
4f16961052
In MD5_native::transform disable sanitizer unsigned integer overflow checks
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Wrap-around is intentional and generates false positives
2024-07-22 13:11:07 +01:00
m-holger
9ce18e41f4
Merge pull request #979 from m-holger/const
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In FUTURE make various QPDFObjectHandle methods const
2024-07-19 10:50:08 +01:00
m-holger
5be057caf0
Merge pull request #1247 from m-holger/fuzz
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Adjust fuzzer warning and memory limits
2024-07-18 22:24:54 +01:00
m-holger
9ac506509b
Merge pull request #1240 from m-holger/i1238
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Fix QPDFOutlineDocumentHelper::resolveNamedDest (fixes #1238 )
2024-07-18 22:24:16 +01:00
m-holger
34729e37e0
Limit memory used by Pl_PNGFilter and Pl_TIFFPredictor during fuzzing
2024-07-18 16:50:30 +01:00
m-holger
fe1fffe8db
Change QPDF max_warnings into a hard limit
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Throw damagedFile if max_warnings is exceeded. Change qpdf_fuzzer warnings limit to
limit to 500.
2024-07-18 16:50:08 +01:00
m-holger
992b7911ce
Limit the number of warnings in json_fuzzer before giving up
2024-07-16 15:36:58 +01:00
m-holger
25e11a444a
Throw an exception if the root of the pages tree misses the /Kids array
2024-07-16 14:44:47 +01:00
m-holger
7f2d76b78d
Remove non-dictionary objects from pages tree
2024-07-16 14:35:32 +01:00
m-holger
f3cbaafcac
Fix QPDFOutlineDocumentHelper::resolveNamedDest ( fixes #1238 )
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Handle case where named destination is a dictionary with /D entry.
Test case is hand-edited outlines-with-old-root-dests.pdf with modified
object 107.
2024-07-14 12:15:45 +01:00
m-holger
186fca6d8d
Add further sanity checks to QPDF::reconstruct_xref
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Run getAllPages as sanity check and throw an exception if too many
warnings are generated or no pages are found.
2024-07-13 14:51:14 +01:00
m-holger
963574f27f
Refactor QPDFOutlineDocumentHelper::resolveNamedDest
2024-07-13 11:34:02 +01:00
m-holger
722148de3d
Further limit size of uncompressed JPEG for fuzzing
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Try a limit of 50MB. For very large limits processing time before
damage is encountered may exceed oss-fuzz limits.
Add further test cases.
2024-07-11 14:32:22 +01:00
m-holger
e914bbbbbc
Add further sanity check to QPDF::reconstruct_xref
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If reconstruct_xref generates more than 1000 warnings give up because the
file is so severely damaged that there is very little point continuing.
2024-07-11 13:25:07 +01:00
