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534 Commits

Author SHA1 Message Date
Jay Berkenbilt
4a4736c695 Fix EOL handling inside strings (fixes #226) 
CR, CRLF, and LF are all supposed to be treated as LF; only one EOL is
to be ignored after backslash.
 2018-08-05 20:48:35 -04:00
Jay Berkenbilt
1619cad1e8 Return correct method for string encryption (fixes #227) 2018-08-05 16:58:21 -04:00
Jay Berkenbilt
e1cd5891af Fix infinite loop on small files with progress reporting (fixes #230) 
Turns out you can keep adding zero to a number over and over again and
it just doesn't get any bigger. Who would have known?
 2018-08-05 15:43:34 -04:00
Jay Berkenbilt
4f4c627b77 ClosedFileInputSource: add method to keep file open 
During periods of intensive operation on a specific file, this method
can reduce the overhead of repeated open/close operations.
 2018-08-04 19:52:46 -04:00
Jay Berkenbilt
1bd2a2e79b Prepare 8.1.0 release 2018-06-23 07:50:11 -04:00
Jay Berkenbilt
3aad28aed0 Bug fix: honor encryption key length with R=3 (fixes #212) 2018-06-22 19:24:26 -04:00
Jay Berkenbilt
a433ed24f9 Add progress reporting for QPDFWriter (fixes #200) 2018-06-22 16:14:54 -04:00
Jay Berkenbilt
2a82f6e1e0 Add method to get count of objects in QPDF 2018-06-22 15:53:40 -04:00
Jay Berkenbilt
c81836076f Correct incorrect comment 2018-06-22 13:13:09 -04:00
Jay Berkenbilt
4ccc8b1a44 Add ClosedFileInputSource 
ClosedFileInputSource is an input source that keeps the file closed
when not reading it.
 2018-06-22 12:52:45 -04:00
Jay Berkenbilt
c71dc6888c Don't prune resource dictionaries on errors or by request 
If we are unable to filter a page's content streams, don't attempt to
remove objects from the page's resource dictionary. Also provide a
command line option to suppress resource removal in case we ever need
this as a workaround for some bug or broken PDF files.
 2018-06-22 10:45:31 -04:00
Jay Berkenbilt
38c9ed23c3 Treat content stream parsing errors as an error, not a warning 
If parsing content streams is treated as a warning, there is no way
for a caller to know if a parsing operation has failed. This is very
dangerous and will likely result in data loss when token filters are
parser callbacks are in use.
 2018-06-22 10:44:08 -04:00
Jay Berkenbilt
6c89d4b35b When splitting files, remove unreferenced objects (fixes #203) 2018-06-21 21:03:30 -04:00
Jay Berkenbilt
ddd78c1b7f Fix QPDFObjectHandle::shallowCopy 
It's not really a shallow copy. It just doesn't cross indirect object
boundaries. The old implementation had a bug that would cause multiple
shallow copies of the same object to share memory, which was not the
intention.
 2018-06-21 20:34:45 -04:00
Jay Berkenbilt
397b097c46 Allow setting a form field's value 2018-06-21 15:57:13 -04:00
Jay Berkenbilt
952a665a4e Better support for creating Unicode strings 2018-06-21 15:57:13 -04:00
Jay Berkenbilt
e44c395c51 QUtil::toUTF16 2018-06-21 15:57:13 -04:00
Jay Berkenbilt
0b05111db8 Implement helper class for interactive forms 2018-06-21 15:57:13 -04:00
Jay Berkenbilt
2e7ee23bf6 Add QPDFPageDocumentHelper and QPDFPageObjectHelper 
This is the beginning of higher-level API support using helper
classes. The goal is to be able to add more helpers without continuing
to pollute QPDF's and QPDFObjectHandle's public interfaces.
 2018-06-21 15:57:13 -04:00
Jay Berkenbilt
4cded10821 Add QPDFObjectHandle::Rectangle type 
Provide a convenient way of accessing rectangles.
 2018-06-21 15:57:13 -04:00
Jay Berkenbilt
078cf9bf90 newline before endstream fix for object streams (fixes #205) 2018-05-12 13:17:43 -04:00
Jay Berkenbilt
15ed9f8565 Fix small logic error in Token construct (fixes #206) 
The special case around name token was not reachable. This would only
affect constructors of name tokens that were represented in
non-canonical form such as with a hex substitution for a printable
character. The error was harmless but still a bug.
 2018-05-05 17:47:56 -04:00
Jay Berkenbilt
b4d6cf6836 Limit depth of nesting in direct objects (fixes #202) 
This fixes CVE-2018-9918.
 2018-04-15 16:11:22 -04:00
Jay Berkenbilt
f8c8e4dcc0 Prepare 8.0.2 release 2018-03-06 11:34:07 -05:00
Jay Berkenbilt
e4e2e26d99 Properly handle pages with no contents (fixes #194) 
Remove calls to assertPageObject(). All cases in the library that
called assertPageObject() work fine if you don't call
assertPageObject() because nothing assumes anything that was being
checked by that call. Removing the calls enables more files to be
successfully processed.
 2018-03-06 11:34:07 -05:00
Jay Berkenbilt
1a4dcb4aaf Pl_Buffer starts in a ready state 2018-03-06 11:31:03 -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
7b9f23a99a Ignore zlib data check errors (fixes #191) 2018-03-03 11:35:01 -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
4bb3046f0b Properly handle strings with PDF Doc Encoding (fixes #179) 
The QPDF_String::getUTF8Val() method was not treating strings that
weren't explicitly Unicode as PDF Doc Encoded. This only affects
characters in the range 0x80 through 0xa0.
 2018-02-18 21:06:27 -05:00
Jay Berkenbilt
2780a1871d Add C API for checking PDF files 2018-02-18 21:06:27 -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
c2e16827b6 Replace "file position" with "offset" in error messages 
Sometimes it's an offset in an object stream or a content stream, so
file position is confusing in some cases.
 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
21b7481b0e Push members of QPDFObjectHandle into a Members object 
As in other cases, this is to enable adding new member variables in
the future without breaking ABI compatibility.
 2018-02-18 21:06:27 -05:00
Jay Berkenbilt
e410b0fe0d Simplify TokenFilter interface 
Expose Pl_QPDFTokenizer, and have it do more of the work of managing
the token filter's pipeline.
 2018-02-18 21:05:47 -05:00
Jay Berkenbilt
1fdd86a049 Move Pl_QPDFTokenizer to public interface 2018-02-18 21:05:47 -05:00
Jay Berkenbilt
5708b5d0aa Add additional interface for filtering page contents 2018-02-18 21:05:47 -05:00
Jay Berkenbilt
fd02944e19 Clean up comment 2018-02-18 21:05:47 -05:00
Jay Berkenbilt
5136238f2a Detect and report bad tokens in content normalization 2018-02-18 21:05:47 -05:00
Jay Berkenbilt
9910104442 Implement TokenFilter and refactor Pl_QPDFTokenizer 
Implement a TokenFilter class and refactor Pl_QPDFTokenizer to use a
TokenFilter class called ContentNormalizer. Pl_QPDFTokenizer is now a
general filter that passes data through a TokenFilter.
 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
b8723e97f4 Add coalesce contents capability 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
25988e8d10 Bug fix: content normalizer should not add trailing newline 
Adding a trailing newline in content normalization damages files whose
contents are split across streams in the middle of tokens. Let
QPDFWriter add the newline with the indicator to ignore the newline,
which it already does. This changes the way some qdf files look.
 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
fcd611b61e Refactor parseContentStream 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
05ff619b09 Remove redundant method 
Remove a redundant method that was equal to another one with
additional arguments. This breaks binary compatibility, but there are
other ABI breaking changes in the upcoming release, so now is the time
to do it.
 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
55ee55394c Use inline image token in content parser 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
ba453ba4ff Use space tokens in tokenizer filter 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
ec538792fa Use inline image token type in tokenizer filter 2018-02-18 21:05:46 -05:00
Jay Berkenbilt
fefe25030e Inline image token type 2018-02-18 21:05:46 -05:00
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
2ebdd6929e Prepare 7.1.1 release 2018-02-04 18:31:42 -05:00
Jay Berkenbilt
e3167c1a60 Fix linearization for files with nonstandard ID length 2018-02-04 18:16:23 -05:00
Jay Berkenbilt
3b2a3cdd77 Fix setLineBuf for bsd (fixes #177) 
Use 0 instead of NULL in a cast.
 2018-02-04 14:19:00 -05:00
Jay Berkenbilt
d5bfd49cb2 Remove use of std::abs (fixes #172) 
Different compilers want different choices of headers for std::abs.
It's easier to just to not use it.
 2018-02-04 14:19:00 -05:00
Jay Berkenbilt
34a9b835b0 Fix indentation 2018-02-04 14:19:00 -05:00
Jay Berkenbilt
7e5e1a7158 Fix offset in error message 2018-02-04 14:19:00 -05:00
Jay Berkenbilt
633fb414af Pl_QPDFTokenizer: Use unsigned_char_pointer instead of copy 2018-01-28 18:34:43 -05:00
Jay Berkenbilt
13d9756a45 Minor fixes to tokenizer 2018-01-28 18:34:43 -05:00
Jay Berkenbilt
2e4ca7ecf4 Update version numbers for 7.1.0 2018-01-14 20:09:20 -05:00
Jay Berkenbilt
04e47deaf9 Fixes for clang 2018-01-14 19:18:04 -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
791e0db762 Allow trailing . in numeric token (fixes #165) 2018-01-13 20:05:40 -05:00
Jay Berkenbilt
ec0087e3ce Support TIFF Predictor (fixes #171) 2018-01-13 19:49:42 -05:00
Jay Berkenbilt
53971d50be Add Pl_TIFFPredictor 2018-01-13 19:49:42 -05:00
Jay Berkenbilt
d9c9049708 Add signed support to BitStream and BitWriter 2018-01-13 19:49:42 -05:00
Jay Berkenbilt
661ed1d28e Minor fixes to Pl_PNGFilter 
Fix comment, remove restriction that doesn't actually matter.
 2018-01-13 19:49:42 -05:00
Jay Berkenbilt
be27d47bdc Use better error for getStreamData failure 
If the stream isn't filterable but we call getStreamData, throw a
regular exception instead of a logic error so that normal error
handling and reporting mechanisms will be used.
 2018-01-13 19:49:42 -05:00
Jay Berkenbilt
4edfe1f41d Add tests for new PNG filters 2017-12-25 18:20:52 -05:00
Jay Berkenbilt
a3a55be9cd Correct errors in PNG filters and make use from library 2017-12-25 14:24:48 -05:00
Casey Rojas
9a48720246 Initial implementation of other PNG decode filters 
Initial implementation provided by Casey Rojas <crojas@infotechfl.com>
Some problems are fixed in a subsequent commit.
 2017-12-24 22:59:51 -05:00
Jay Berkenbilt
0f1ce8e646 Prepare 7.0.0 release 2017-09-16 13:22:15 -04:00
Jay Berkenbilt
249e95f608 Fix test failure on MSVC 2017-09-15 23:09:04 -04:00
Jay Berkenbilt
6898bc8d98 Spell check 2017-09-15 23:09:04 -04:00
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