Jay Berkenbilt
3e306ae64c
Add QUtil::hex_decode
2018-01-14 09:04:13 -05:00
Jay Berkenbilt
68572df2bf
Update copyright to 2018
2018-01-13 20:25:58 -05:00
Jay Berkenbilt
07c8bb2843
Additionally license under Apache License version 2.0
...
The Apache License version 2.0 is now the primary license for qpdf.
However, users may, at their option, continue to use Artistic version
2.0.
2017-09-14 12:59:25 -04:00
Jay Berkenbilt
d31a7b76e7
Improve message for stream decoding error
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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
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
ad527a64f9
Parse iteratively to avoid stack overflow ( fixes #146 )
2017-08-25 21:56:45 -04:00
Jay Berkenbilt
e452d9dca6
Spell check
2017-08-22 14:22:20 -04:00
Jay Berkenbilt
fabff0f3ec
Limit token length during xref recovery
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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
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
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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
8288a4eb3a
Update copyright to 2017
2017-08-21 21:18:47 -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
4b908ade70
Update header documentation and ChangeLog entry for PCLm
2017-08-21 21:05:44 -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
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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
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
ca5b1d267a
Improve stream length recovery
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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
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
Jay Berkenbilt
c5dc6d8067
Remove unused PointerHolder interface
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Also fix a bug resulting from incorrect use of PointerHolder because
of this unused parameter.
2017-08-10 19:01:38 -04:00
Jay Berkenbilt
8fe261d8b4
QUtil::strcasecmp
2017-08-05 10:22:33 -04:00
Jay Berkenbilt
2d5b854468
Allow reading command-line args from files ( fixes #16 )
2017-07-29 22:23:21 -04:00
Jay Berkenbilt
5993c3e83c
Detect input file = output file ( fixes #29 )
2017-07-29 20:58:01 -04:00
Jay Berkenbilt
f37d399d82
Add newline-before-endstream option ( fixes #103 )
2017-07-29 12:21:38 -04:00
Jay Berkenbilt
b389268f16
Better handle split content streams ( fixes #73 )
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When parsing content streams, allow content to be split arbitrarily
across stream boundaries.
2017-07-29 12:19:04 -04:00
Jay Berkenbilt
4647acbe3c
Clarify documentation on copyForeignObject ( fixes #69 )
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Be explicit about the need to keep the source QPDF object around.
2017-07-29 12:19:04 -04:00
Jay Berkenbilt
3a1ff5ded9
Add option to preserve unreferenced objects
2017-07-28 19:19:11 -04:00
Jay Berkenbilt
7f8892525f
Add precheck streams capability
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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.
2017-07-27 23:42:27 -04:00
Jay Berkenbilt
a4fd4b91c6
Convert stream filtering errors to warnings
2017-07-27 18:43:07 -04:00
Jay Berkenbilt
40f00122b8
Convert object parsing errors to warnings
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QPDFObjectHandle::parseInternal now issues warnings instead of
throwing exceptions for all error conditions that it finds (except
internal logic errors) and has stronger recovery for things like
invalid tokens and malformed dictionaries. This should improve qpdf's
ability to recover from a wide range of broken files that currently
cause it to fail.
2017-07-27 18:20:31 -04:00
Jay Berkenbilt
dd8dad74f4
Move lexer helper functions to QUtil
2017-07-27 13:59:56 -04:00
Jay Berkenbilt
701b518d5c
Detect recursion loops resolving objects ( fixes #51 )
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During parsing of an object, sometimes parts of the object have to be
resolved. An example is stream lengths. If such an object directly or
indirectly points to the object being parsed, it can cause an infinite
loop. Guard against all cases of re-entrant resolution of objects.
2017-07-26 06:24:07 -04:00
Jay Berkenbilt
315092dd98
Avoid xref reconstruction infinite loop ( fixes #100 )
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This is CVE-2017-9209.
2017-07-26 06:24:07 -04:00
Jay Berkenbilt
bd6c845619
Fix typo in comment
2017-07-26 06:24:07 -04:00
Thorsten Schöning
7c08aa4280
Include QPDFExc.hh for use in std::list
2016-01-24 12:07:03 -05:00
Thorsten Schöning
e0201c12cc
Include QPDFObjectHandle for use in std::list
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QPDFObjectHandle was used as forward declaration, but C++-Builder 10
Seattle can't use it in std::list in such cases because the type is
undefined.
2016-01-24 12:04:25 -05:00
Jay Berkenbilt
e0e9d64674
Remove some ABI compatibility private methods
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Since we have to bump soname, remove some private methods that were
just there for binary compatibility
2015-11-10 12:22:40 -05:00
Jay Berkenbilt
0496ab1a6e
Fix spelling errors
2015-10-31 18:56:43 -04:00
Jay Berkenbilt
b8bdef0ad1
Implement deterministic ID
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For non-encrypted files, determinstic ID generation uses file contents
instead of timestamp and file name. At a small runtime cost, this
enables generation of the same /ID if the same inputs are converted in
the same way multiple times.
2015-10-31 18:56:42 -04:00
