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170 Commits

Author SHA1 Message Date
Jay Berkenbilt
c3cee5f154 Exercise out of scope original pdf for copyForeignObject 2019-01-07 07:38:03 -05:00
Jay Berkenbilt
fddbcab0e7 Mostly don't require original QPDF for copyForeignObject (fixes #219) 
The original QPDF is only required now when the source
QPDFObjectHandle is a stream that gets its stream data from a
QPDFObjectHandle::StreamDataProvider.
 2019-01-07 00:11:15 -05:00
Jay Berkenbilt
fbbb0ee016 Make a static version of QPDF::pipeStreamData 
This is in preparation of being able to pipe a stream's data without
keeping a copy of its containing qpdf object.
 2019-01-07 00:11:15 -05:00
Jay Berkenbilt
7588cac295 Create an application-scope unique ID for each QPDF object 
Use this instead of QPDF* as a map key for object_copiers.
 2019-01-07 00:11:15 -05:00
Jay Berkenbilt
e27ac682e0 Move encryption parameters into a class 2019-01-06 09:58:16 -05:00
Jay Berkenbilt
837dcf8fc2 Don't call assert while checking linearization data (fixes #209, #231) 
Instead of calling assert for problems found during checking
linearization data, throw an exception which is later caught and
issued as an error. Ideally we would handle errors more robustly, but
this is still a significant improvement.
 2019-01-04 11:55:42 -05:00
Jay Berkenbilt
a01359189b Fix dangling references (fixes #240) 
On certain operations, such as iterating through all objects and
adding new indirect objects, walk through the entire object structure
and explicitly resolve any indirect references to non-existent
objects. That prevents new objects from springing into existence and
causing the previously dangling references to point to them.
 2019-01-04 10:29:29 -05:00
Jay Berkenbilt
3e74916c5a Fix seg fault on empty xref stream (fixes #263) 
Thanks to @p-cher for supplying a patch.
 2019-01-03 09:17:43 -05:00
Jay Berkenbilt
6ee761fc86 Prepare 8.2.1 release 2018-08-18 10:56:19 -04:00
Jay Berkenbilt
5e9e17e62a Prepare 8.2.0 release 2018-08-16 11:53:10 -04:00
Jay Berkenbilt
1bd2a2e79b Prepare 8.1.0 release 2018-06-23 07:50:11 -04:00
Jay Berkenbilt
2a82f6e1e0 Add method to get count of objects in QPDF 2018-06-22 15:53:40 -04:00
Jay Berkenbilt
f8c8e4dcc0 Prepare 8.0.2 release 2018-03-06 11:34:07 -05:00
Jay Berkenbilt
ee44aef8d0 Treat loop in xref tables as damage (fixes #192) 
Prior to this fix, if there was a loop detected in following /Prev
pointers in xref streams/tables, it would cause qpdf to lose data.
Note that this condition causes many PDF readers to hang or fail.
 2018-03-05 14:26:58 -05:00
Jay Berkenbilt
6fe1e9de40 Prepare 8.0.1 release 2018-03-04 07:16:20 -05:00
Jay Berkenbilt
3e8b643ae3 Release 8.0.0 2018-02-25 16:00:11 -05:00
Jay Berkenbilt
111ec50950 8.0.rc3 2018-02-25 14:17:59 -05:00
Jay Berkenbilt
d3d3970cf6 8.0.rc2 2018-02-25 13:50:22 -05:00
Jay Berkenbilt
a16d703f4d Update version to 8.0.rc1 
This is for testing the release process, particularly as it pertains
to AppImage creation.
 2018-02-25 09:03:27 -05:00
Jay Berkenbilt
82cae01a76 Bump version number and soname 
Bump to an alpha release. This version is not being widely released
but is being used to push the new shared library version through the
debian packaging system and to test out github releases.
 2018-02-20 21:31:38 -05:00
Jay Berkenbilt
d0e99f195a More robust handling of type errors 
Give objects descriptions and context so it is possible to issue
warnings instead of fatal errors for attempts to access objects of the
wrong type.
 2018-02-18 21:06:27 -05:00
Jay Berkenbilt
52e024f701 Include omitted object description in error message 2018-02-18 21:06:27 -05:00
Jay Berkenbilt
cb3b705cf9 Include filename in object stream parse error 2018-02-18 21:06:27 -05:00
Jay Berkenbilt
2ebdd6929e Prepare 7.1.1 release 2018-02-04 18:31:42 -05:00
Jay Berkenbilt
7e5e1a7158 Fix offset in error message 2018-02-04 14:19:00 -05:00
Jay Berkenbilt
2e4ca7ecf4 Update version numbers for 7.1.0 2018-01-14 20:09:20 -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
a3a55be9cd Correct errors in PNG filters and make use from library 2017-12-25 14:24:48 -05:00
Jay Berkenbilt
0f1ce8e646 Prepare 7.0.0 release 2017-09-16 13:22:15 -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
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
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
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
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
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
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
46611f0710 Prevent a division by zero error (fixes #141) 
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
30f109e244 Read xref table without PCRE 
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
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
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
570db9b60b Catch more exceptions while resolving objects 2017-07-29 19:31:12 -04:00
Jay Berkenbilt
b43a0ac237 When recover stream length, indicate the length (fixes #44) 2017-07-29 19:15:06 -04:00
Jay Berkenbilt
6a7d53ad2b Handle zlib data errors better (fixes #106) 2017-07-29 12:19:04 -04:00
Jay Berkenbilt
07d6f770b2 Better recovery of bad stream start (fixes #104) 2017-07-29 12:19:04 -04:00
Jay Berkenbilt
ba2bae4acc Use 1.2 as the version if we can't read it from the header 
The code was using 1.0, but we use /FlateDecode, which didn't appear
until 1.2.
 2017-07-29 12:19:04 -04:00