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68 Commits

Author SHA1 Message Date
Jay Berkenbilt
212812d837 Fix errors reported by Coverity 
Thanks to Jiri Popelka from Red Hat for sending the output of a
Coverity run over qpdf.
 2013-07-07 15:36:51 -04:00
Jay Berkenbilt
eae8370cd9 Add optional /Length key in crypt filter dictionary 2013-06-14 20:42:39 -04:00
Jay Berkenbilt
a3576a7359 Bug fix: handle generation > 0 when generating object streams 
Rework QPDFWriter to always track old object IDs and QPDFObjGen
instead of int, thus not discarding the generation number.  Switch to
QPDF::getCompressibleObjGen() to properly handle the case of an old
object eligible for compression that has a generation of other than
zero.
 2013-06-14 14:58:09 -04:00
Jay Berkenbilt
690d6031db Remove duplicated comment 2013-06-08 18:58:31 -04:00
Jay Berkenbilt
ac4deac187 Call QUtil::safe_fopen in place of fopen 
fopen was previuosly called wrapped by QUtil::fopen_wrapper, but
QUtil::safe_fopen does this itself, which is less cumbersome.
 2013-03-05 13:35:46 -05:00
Jay Berkenbilt
6b9297882e Mark secure CRT warnings with comment 
Put a specific comment marker next to every piece of code that MSVC
gives warning 4996 for.  This warning is generated for calls to
functions that Microsoft considers insecure or deprecated.  This
change is in preparation for fixing all these cases even though none
of them are actually incorrect or insecure as used in qpdf.  The
comment marker makes them easier to find so they can be fixed in
subsequent commits.
 2013-03-05 13:33:32 -05:00
Jay Berkenbilt
30027481f7 Remove all old-style casts from C++ code 2013-03-04 16:45:16 -05:00
Jay Berkenbilt
9eb5982fa3 Avoid modifying trailer when writing 
When preparing the trailer for writing to the new file, trim a copy of
the trailer instead of the original file's trailer.
 2012-12-31 10:32:32 -05:00
Jay Berkenbilt
9a23c3dcb6 Remove /Crypt from stream filters unconditionally 
When writing a new stream, always remove /Crypt even if we are not
otherwise able to filter the stream.
 2012-12-31 10:32:32 -05:00
Jay Berkenbilt
4237a29c94 Refactor Dictionary writing code 
Original code was written before we could shallow copy objects, so all
the filtering was done by suppressing the output of certain keys and
replacing them with other keys.  Now we can simplify the code greatly
by modifying shallow copies of dictionaries in place.
 2012-12-31 10:32:32 -05:00
Jay Berkenbilt
e57c25814e Support for encryption with /V=5 and /R=5 and /R=6 
Read and write support is implemented for /V=5 with /R=5 as well as
/R=6.  /R=5 is the deprecated encryption method used by Acrobat IX.
/R=6 is the encryption method used by PDF 2.0 from ISO 32000-2.
 2012-12-31 10:32:32 -05:00
Jay Berkenbilt
93ac1695a4 Support files with only attachments encrypted 
Test cases added in a future commit since they depend on /R=6 support.
 2012-12-31 10:32:32 -05:00
Jay Berkenbilt
9b42f526df Update AES classes to work with 256-bit keys 2012-12-31 05:36:50 -05:00
Jay Berkenbilt
774584163f Add ExtensionLevel support to version handling 
All version operations are now fully aware of extension levels.
 2012-12-31 05:36:50 -05:00
Jay Berkenbilt
3101955ac0 Add V5 parameters to EncryptionData 2012-12-31 05:36:50 -05:00
Jay Berkenbilt
04c203ae06 Eliminate flattenScalarReferences 2012-12-31 05:36:48 -05:00
Jay Berkenbilt
041397fdab Allow reading from InputSource and writing to Pipeline 
Allowing users to subclass InputSource and Pipeline to read and write
from/to arbitrary sources provides the maximum flexibility for users
who want to read and write from other than files or memory.
 2012-09-23 17:42:26 -04:00
Jay Berkenbilt
c1627d0438 Add QPDFWriter::setExtraHeaderText 2012-09-06 15:31:12 -04:00
Jay Berkenbilt
8d2b29ef98 Fix segmentation fault with use of QPDFWriter::setOutputMemory 2012-09-06 14:39:06 -04:00
Jay Berkenbilt
b26ce88ea1 Minor fixes to copyEncryptionParameters 
This fixes were to code added yesterday; the problems would not have
impacted any previously released code.  These are all changes related
to the possibility that copyEncryptionParameters may be called on
behalf a different QPDF than the one being written.
 2012-07-15 21:14:02 -04:00
Jay Berkenbilt
db95960ac1 Bug fix: preserve AES when copying encryption parameters 2012-07-15 19:07:59 -04:00
Jay Berkenbilt
0575d77d77 Add public QPDFWriter::copyEncryptionParameters 
Method to copy encryption parameters from another file.  Adapted from
existing code to copy encryption parameters from the original file.
 2012-07-14 09:14:41 -04:00
Jay Berkenbilt
1c944e4c89 Have QPDFWriter detect foreign objects while writing 
Throw an exception that directs the user to QPDF::copyForeignObject.
 2012-07-14 08:07:23 -04:00
Jay Berkenbilt
8705e2e8fc Add QPDFWriter method to output to FILE* 2012-07-05 21:24:04 -04:00
Jay Berkenbilt
1a3e88ca09 Fix large file support for 32-bit Linux 2012-06-25 10:51:44 -04:00
Jay Berkenbilt
c16db4106c Increase padding in linearized files 
With QPDF allowing integers to contain 64-bit quantities, this change
is necessary to be able to linearize files whose sizes might be larger
than 10 digits.
 2012-06-24 15:56:59 -04:00
Jay Berkenbilt
8318d81ada Fix and test support for files >= 4 GB 2012-06-24 15:56:50 -04:00
Jay Berkenbilt
781c313058 Change QPDF_Integer from int to long long 
This makes it possible to store offsets that are larger than 2 GB in
the trailer dictionary.
 2012-06-24 15:20:01 -04:00
Jay Berkenbilt
bf059a6001 Replace the 8-bit characters with \x.. in QPDFWriter.cc 
This just makes it safer to pull up this file in an editor.
 2012-06-23 09:05:06 -04:00
Jay Berkenbilt
81e8752362 Use qpdf_offset_t in place of off_t in public APIs. 
off_t is used internally only when needed to talk to standard
libraries.  This requires that the "long long" type be supported by
the compiler.
 2012-06-21 21:23:24 -04:00
Jay Berkenbilt
11d33a45fa Iterate of /Info's keys, not trailer's keys, to seed /ID 
Thanks Tobias Hoffmann for noticing the error.
 2012-06-21 15:52:53 -04:00
Jay Berkenbilt
5d4cad9c02 ABI change: fix use of off_t, size_t, and integer types 
Significantly improve the code's use of off_t for file offsets, size_t
for memory sizes, and integer types in cases where there has to be
compatibility with external interfaces.  Rework sections of the code
that would have prevented qpdf from working on files larger than 2 (or
maybe 4) GB in size.
 2012-06-20 15:20:26 -04:00
Jay Berkenbilt
24e2b2b76f Fix gcc 4.7 warnings about C++11 2012-06-20 15:18:14 -04:00
Jay Berkenbilt
788f6f7769 fix small logic error surrounding adding newlines; in practice, the logic error would probably never manifest itself without other code changes 2011-08-11 15:22:59 -04:00
Jay Berkenbilt
0abdf5381c fix memory error caught by valgrind 2011-08-11 14:11:27 -04:00
Jay Berkenbilt
ce358f103e remove stray XXX comment 2011-08-11 10:17:24 -04:00
Jay Berkenbilt
a42a4068b5 preserve /EncryptMetadata when copying encryption parameters 2011-08-10 19:47:18 -04:00
Jay Berkenbilt
759c56e1fe implement ability to save PDF to memory, also update ChangeLog 2011-08-10 16:34:29 -04:00
Jay Berkenbilt
7dc197ef88 implement replace and swap 2011-08-10 12:42:48 -04:00
Jay Berkenbilt
a7e269537d update code to new PointerHolder, and reintroduce change that was accidentally backed out 
git-svn-id: svn+q:///qpdf/trunk@1031 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-09-24 20:45:18 +00:00
Jay Berkenbilt
b1e0dcff16 handle stream filter abbreviations from table H.1 
git-svn-id: svn+q:///qpdf/trunk@1025 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-09-05 15:00:44 +00:00
Jay Berkenbilt
cd1e46616a typo 
git-svn-id: svn+q:///qpdf/trunk@985 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-08-02 16:26:08 +00:00
Jay Berkenbilt
00ed5af502 remove use of float for version comparison 
git-svn-id: svn+q:///qpdf/trunk@984 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-08-02 16:18:46 +00:00
Jay Berkenbilt
b71cef856b fix linearization padding bug for second xref stream as well as first, which was previously fixed 
git-svn-id: svn+q:///qpdf/trunk@957 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-04-18 23:19:54 +00:00
Jay Berkenbilt
84353451a3 refactor to isolate pad calculation 
git-svn-id: svn+q:///qpdf/trunk@956 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-04-18 23:01:31 +00:00
Jay Berkenbilt
028f106bee comment about flattenScalarReferences 
git-svn-id: svn+q:///qpdf/trunk@945 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-03-27 14:50:11 +00:00
Jay Berkenbilt
05a6d9669d redo padding calculation for first half xref stream; old calculation 
failed to consider the effect of compressing the strema


git-svn-id: svn+q:///qpdf/trunk@932 71b93d88-0707-0410-a8cf-f5a4172ac649
 2010-01-24 22:05:16 +00:00
Jay Berkenbilt
b67a3c15e7 DLL.hh -> DLL.h, move public enumerated types into Constants.h and use them both for C and C++ interfaces 
git-svn-id: svn+q:///qpdf/trunk@828 71b93d88-0707-0410-a8cf-f5a4172ac649
 2009-10-19 20:17:14 +00:00
Jay Berkenbilt
a8715c495b add C API for R4 encryption 
git-svn-id: svn+q:///qpdf/trunk@825 71b93d88-0707-0410-a8cf-f5a4172ac649
 2009-10-19 00:36:51 +00:00
Jay Berkenbilt
09175e4578 more testing, bug fix for linearized aes encrypted files 
git-svn-id: svn+q:///qpdf/trunk@824 71b93d88-0707-0410-a8cf-f5a4172ac649
 2009-10-19 00:17:11 +00:00