Jay Berkenbilt
f2ffb6968a
Fix Windows compilation errors
2017-09-15 21:44:57 -04:00
Jay Berkenbilt
d31a7b76e7
Improve message for stream decoding error
...
Tweak the message so that we inform the user that we are mitigating
data loss.
2017-09-12 16:03:48 -04:00
Jay Berkenbilt
eaacf94005
Update C API with new QPDFWriter methods
2017-09-12 14:30:39 -04:00
Jay Berkenbilt
40ecba4172
Pl_DCT: Use custom source and destination managers ( fixes #153 )
...
Avoid calling jpeg_mem_src and jpeg_mem_dest. The custom destination
manager writes to the pipeline in smaller chunks to avoid having the
whole image in memory at once. The source manager works directly with
the Buffer object. Using customer managers avoids use of memory source
and destination managers, which are not present in older versions of
libjpeg still in use by some Linux distributions.
2017-09-07 22:59:11 -04:00
Jay Berkenbilt
3ef1be9783
PNGFilter: Better range checking for columns
2017-08-31 07:26:58 -04:00
Jay Berkenbilt
1868a10f8b
Replace all atoi calls with QUtil::string_to_int
...
The latter catches underflow/overflow.
2017-08-29 12:28:32 -04:00
Jay Berkenbilt
742190bd98
Pl_PNGFilter: disallow columns = 0
2017-08-29 12:28:32 -04:00
Jay Berkenbilt
6d46346eb9
Detect integer overflow/underflow
2017-08-29 12:28:32 -04:00
Jay Berkenbilt
e999bbae43
Fix memory leak with bad jpeg data
2017-08-28 22:16:45 -04:00
Jay Berkenbilt
c6872d2c70
Clean up circular references in QPDF_Stream
2017-08-28 22:16:31 -04:00
Jay Berkenbilt
728dc9e6d8
Fix error caught by clang
2017-08-26 21:51:17 -04:00
Jay Berkenbilt
dea704f0ab
Pad keys to avoid memory errors ( fixes #147 )
2017-08-26 21:35:59 -04:00
Jay Berkenbilt
021c229331
Fix Pl_Flate memory leak on error ( fixes #148 )
2017-08-25 22:26:53 -04:00
Jay Berkenbilt
ad527a64f9
Parse iteratively to avoid stack overflow ( fixes #146 )
2017-08-25 21:56:45 -04:00
Jay Berkenbilt
85f05cc57f
Detect xref pointer infinite loop ( fixes #149 )
2017-08-25 19:58:31 -04:00
Jay Berkenbilt
1e52d33822
Bump soname to 18 and version to 7.0.b1
2017-08-22 16:50:48 -04:00
Jay Berkenbilt
e452d9dca6
Spell check
2017-08-22 14:22:20 -04:00
Jay Berkenbilt
6219111ed7
Update references to README files
...
Most of the README files have been renamed. Refer to the new names.
2017-08-22 14:13:10 -04:00
Jay Berkenbilt
83ec09f66c
Do memory checks
...
Slightly improve memory cleanup in Pl_DCT
Make it easier to test with valgrind
2017-08-22 14:13:10 -04:00
Jay Berkenbilt
fabff0f3ec
Limit token length during xref recovery
...
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.
2017-08-22 14:13:10 -04:00
Jay Berkenbilt
caf5e39c2e
Fix compiler warnings for clang/mac OS X
2017-08-22 14:13:10 -04:00
Jay Berkenbilt
6884ad2ead
Fix logic error in recovery
...
A stray semicolon caused a condition to be incorrectly applied during
stream length recovery.
2017-08-22 07:19:41 -04:00
Jay Berkenbilt
ce435222b2
Push QPDFWriter member variables into a nested class
2017-08-21 22:04:07 -04:00
Jay Berkenbilt
a8c93bd324
Push QPDF member variables into a nested class
...
Pushing member variables into a nested class enables addition of new
member variables without breaking binary compatibility.
2017-08-21 21:35:11 -04:00
Jay Berkenbilt
198856a825
Improve pclm parameter settings
2017-08-21 21:05:48 -04:00
Jay Berkenbilt
8ab52fa558
Combine writePCLm with writeStandard
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Reduce code duplication
2017-08-21 21:05:48 -04:00
Jay Berkenbilt
9f60a864a0
Combine PCLm header into writeHeader
2017-08-21 21:05:47 -04:00
Jay Berkenbilt
adbcfcff2d
Remove duplicated coverage cases
...
Remove duplicated coverage cases from Sahil's code so existing test
suite passes.
2017-08-21 18:55:02 -04:00
Sahil Arora
b19210fa7d
QPDFWriter: Add setPCLm() and writePCLm() methods
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* Add support for PCLm using setPCLm() and writePCLm() methods in
QPDFWriter.hh and QPDFWriter.cc
* Add a function writePCLmHeader() for PCLm header in QPDFWriter
2017-08-21 18:55:02 -04:00
Jay Berkenbilt
ddc6cf0cf6
Precheck streams by default
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There is no need for a --precheck-streams option. We can do the
precheck without imposing any penalty, only re-encoding the stream if
it fails the first time.
2017-08-21 17:44:22 -04:00
Jay Berkenbilt
9744414c66
Enable finer grained control of stream decoding
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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.
2017-08-21 17:44:22 -04:00
Jay Berkenbilt
ae90d2c485
Implement Pl_DCT pipeline
...
Additional testing is added in later commits to be supported by
additional changes in the library.
2017-08-21 17:44:02 -04:00
Jay Berkenbilt
2d2f619665
Implement Pl_RunLength pipeline
2017-08-19 14:50:55 -04:00
Jay Berkenbilt
cfa2eb97fb
Add page rotation ( fixes #132 )
2017-08-12 22:57:38 -04:00
Jay Berkenbilt
8249a26d69
Fix infinite loop in QPDFWriter ( fixes #143 )
2017-08-12 08:36:36 -04:00
Jay Berkenbilt
36b3fe5af7
Fix --newline-before-endstream option ( fixes #133 )
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Add a newline unconditionally before endstream even if a newline was
already written as part of the stream data.
2017-08-11 20:57:05 -04:00
Jay Berkenbilt
46611f0710
Prevent a division by zero error ( fixes #141 )
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Bad /W in an xref stream could cause a division by zero error. Now
this is handled as a special case.
2017-08-11 20:11:19 -04:00
Jay Berkenbilt
8fe0b06cd8
Pad encryption parameters that are too short ( fixes #96 )
2017-08-11 19:53:56 -04:00
Jay Berkenbilt
e7d0019bf4
Generate libqpdf.map from autoconf
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Rather than checking consistency of libqpdf.map, generate it.
2017-08-11 04:56:22 -04:00
Jay Berkenbilt
6247aaa57c
Fix libqpdf.map and prevent future breakage
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The build now checks to make sure libqpdf.map has the right library
version number in it.
2017-08-10 21:53:19 -04:00
Jay Berkenbilt
9a96e233b0
Remove PCRE
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
30f109e244
Read xref table without PCRE
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Also accept more errors than before.
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
98a843c2a2
Reconstruct xref without PCRE
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
ca5b1d267a
Improve stream length recovery
...
Eliminate PCRE and find endobj not preceded by endstream. Be more lax
about placement of endstream and endobj.
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
3082e4e606
Find xref without PCRE
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
90840be594
Find lindict without PCRE
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
03aa9679ac
Find starxref without PCRE
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
1765c6ec20
Find header without PCRE
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
296b679d6e
Implement findFirst and findLast in InputSource
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Preparing to refactor some pattern searching code to use these instead
of their own memchr loops. This should simplify the code that replaces
PCRE.
2017-08-10 21:30:32 -04:00
Jay Berkenbilt
ef8ae5449d
Allow QPDFTokenizer::readToken to return bad tokens
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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.
2017-08-10 19:01:41 -04:00
