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924 Commits 16 Branches 95 Tags 40 MiB
2699ecf13e
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215 Commits

Author SHA1 Message Date
Jay Berkenbilt
2699ecf13e Push QPDFTokenizer members into a nested structure 
This is for protection against future ABI breaking changes.
 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
d97474868d Lexer enhancements: EOF, comment, space 
Significant enhancements to the lexer to improve EOF handling and to
support comments and spaces as tokens. Various other minor issues were
fixed as well.
 2018-02-18 20:18:40 -05:00
Jay Berkenbilt
ebd5ed63de Add option to save pass 1 of lineariziation 
This is useful only for debugging the linearization code.
 2018-02-18 20:18:40 -05:00
Jay Berkenbilt
e3167c1a60 Fix linearization for files with nonstandard ID length 2018-02-04 18:16:23 -05:00
Jay Berkenbilt
aa2cfad61a Clarify some comments 2018-01-28 18:29:47 -05:00
Jay Berkenbilt
569d74d36b Allow raw encryption key to be specified 
Add options to enable the raw encryption key to be directly shown or
specified. Thanks to Didier Stevens <didier.stevens@gmail.com> for the
idea and contribution of one implementation of this idea.
 2018-01-14 10:21:05 -05:00
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 
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 
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 
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 
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 
* 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 
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 
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
30f109e244 Read xref table without PCRE 
Also accept more errors than before.
 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
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 
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 
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 
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) 
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) 
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 
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 
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) 
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) 
This is CVE-2017-9209.
 2017-07-26 06:24:07 -04:00