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611 Commits

Author SHA1 Message Date
Jay Berkenbilt
9ad6cfd45b Clarify qpdf_register_progress_reporter's comment 2021-01-19 08:55:23 -05:00
Jay Berkenbilt
6226b69dba Add warn() to QPDF's public API 2021-01-16 18:41:53 -05:00
Jay Berkenbilt
18340b8835 Spell check 2021-01-04 16:26:58 -05:00
Jay Berkenbilt
bf8fd41fee Update copyright to 2021 2021-01-04 16:26:58 -05:00
Jay Berkenbilt
3be58f49e5 Make more QPDFPageObjectHelper methods work with form XObject 2021-01-02 14:08:53 -05:00
Jay Berkenbilt
98da4fd835 Externalize inline images now includes form XObjects 2021-01-02 14:08:17 -05:00
Jay Berkenbilt
bedf35d6a5 Bug fix: avoid extraneous pipeline finish calls with multiple contents 
Avoid calling finish() multiple times on the pipeline passed to
pipeContentStreams. This commit also fixes a bug in which qpdf was not
exiting with the proper exit status if warnings found while splitting
pages; this was exposed by a test case that changed.
 2021-01-02 14:08:17 -05:00
Jay Berkenbilt
a139d2b36d Add several methods for working with form XObjects (fixes #436) 
Make some more methods in QPDFPageObjectHelper work with form
XObjects, provide forEach methods to walk through nested form
XObjects, possibly recursively. This should make it easier to work
with form XObjects from user code.
 2021-01-02 12:29:31 -05:00
Jay Berkenbilt
afb48d23a9 QPDFPageObjectHelper::removeUnreferencedResources works with form XObjects 2021-01-02 11:33:36 -05:00
Jay Berkenbilt
6154221edb QPDFPageObjectHelper: filterPageContents -> filterContents + form XObject 2021-01-02 11:33:36 -05:00
Jay Berkenbilt
63ea46193d QPDFPageObjectHelper: getPageImages -> getImages 2021-01-02 11:33:36 -05:00
Jay Berkenbilt
e7a8554563 QPDFPageObjectHelper::getPageImages: support form XObjects 2021-01-02 11:33:36 -05:00
Jay Berkenbilt
1562d34c09 Add QPDFObjectHandle::isFormXObject 2021-01-01 07:36:10 -05:00
Jay Berkenbilt
4cbf32bfdb Fix typo in comment 2020-12-30 13:20:42 -05:00
Jay Berkenbilt
c9271335fa Add QPDFPageObjectHelper::flattenRotation and --flatten-rotation 2020-12-30 13:03:55 -05:00
Jay Berkenbilt
d4d7630cf5 Add pdf-custom-filter example 2020-12-28 13:03:04 -05:00
Jay Berkenbilt
ac042d16cf Add Pipeline::getNext() to DLL 2020-12-28 13:03:04 -05:00
Jay Berkenbilt
12ecd2019a Add QPDFObjectHandle::setFilterOnWrite 2020-12-28 12:58:19 -05:00
Jay Berkenbilt
3f9191a344 Add ostream << for QPDFObjGen 2020-12-28 12:58:19 -05:00
Jay Berkenbilt
1a62cce940 Restructure optimize to allow skipping parameters of filtered streams 2020-12-28 12:58:19 -05:00
Jay Berkenbilt
09027344b9 Refactor: separate code that determines whether to filter a stream 2020-12-28 12:58:19 -05:00
Jay Berkenbilt
39bfa01307 Implement user-provided stream filters 
Refactor QPDF_Stream to use stream filter classes to handle supported
stream filters as well.
 2020-12-28 12:58:19 -05:00
Jay Berkenbilt
1fb26f08ad Fix typo in comment and whitespace issue 2020-12-28 12:57:59 -05:00
Jay Berkenbilt
0675a3f61a Decide not to allow stream data providers to modify dictionary 2020-12-26 08:48:20 -05:00
Jay Berkenbilt
cc8895078a Add QPDFObjectHandle::makeDirect(bool allow_streams) 2020-12-26 08:48:18 -05:00
Jay Berkenbilt
573b6eb8b1 Provide qpdf write progress reporting from C API (fixes #487) 2020-12-20 14:43:24 -05:00
Jay Berkenbilt
2050977099 Add QPDFObjectHandle manipulation to C API 2020-11-28 19:48:07 -05:00
Jay Berkenbilt
9d64481571 Handle negative numbers in QIntC::range_check (fuzz issue 26994) 2020-11-21 13:43:04 -05:00
Jay Berkenbilt
bcea54fcaa Revert removal of unreadCh change for performance 
Turns out unreadCh is much more efficient than seek(-1, SEEK_CUR).
Update comments and code to reflect this.
 2020-10-27 11:57:48 -04:00
Jay Berkenbilt
fd13fe74ef TODO and comments item for pipeContentStreams 2020-10-23 16:53:58 -04:00
Jay Berkenbilt
802de87c30 Fix outdated comment in QPDFTokenizer.hh 2020-10-23 06:39:42 -04:00
Jay Berkenbilt
8a11feacc3 Avoid leak by resolving object streams more than once (fuzz issue 23642) 2020-10-22 15:39:36 -04:00
Jay Berkenbilt
7f4a4df919 Add range_check method to QIntC 2020-10-22 05:48:40 -04:00
Jay Berkenbilt
24196c08cb Fix loop detection error (fuzz issue 23172) 2020-10-22 05:48:35 -04:00
Jay Berkenbilt
98f6c00dad Protect numeric conversion against user's locale (fixes #459) 2020-10-21 16:42:51 -04:00
Jay Berkenbilt
bed165c9fc Stop using InputSource::unreadCh 2020-10-18 07:43:05 -04:00
Jay Berkenbilt
18b34a5649 InputSource::unreadCh -- only unread most recently read character 
This is all that ever worked. The test suite was trying to do
something different from ClosedFileInputSource.
 2020-10-16 17:15:39 -04:00
Jay Berkenbilt
496aacd34a Add missing QPDF_DLL_CLASS for QPDFObject (fixes #424) 
This is needed for some compilers on some platforms, notably current
versions of clang.
 2020-04-07 10:35:03 -04:00
Jay Berkenbilt
77198d5310 Delegate random number generation to crypto provider (fixes #418) 2020-04-06 11:23:02 -04:00
Jay Berkenbilt
619d294e9d Remove QUtil::srandom 2020-04-06 09:49:02 -04:00
Jay Berkenbilt
893d38b87e Allow propagation of errors and retry through StreamDataProvider 
StreamDataProvider::provideStreamData now has a rich enough API for it
to effectively proxy to pipeStreamData.
 2020-04-05 20:07:13 -04:00
Jay Berkenbilt
2100b4ce15 Allow qpdf to be built on systems without wchar_t (fixes #406) 2020-04-03 21:39:44 -04:00
Jay Berkenbilt
4f3b89991b placeFormXObject: allow control of shrink/expand (fixes #409) 2020-04-03 21:39:17 -04:00
Jay Berkenbilt
54726930df Remove redundant methods in QUtil 
This was being saved until we had to break ABI.
 2020-04-03 12:17:57 -04:00
Jay Berkenbilt
8a87a2fbee Use C++11 features to simplify QIntC 2020-04-03 12:17:57 -04:00
Jay Berkenbilt
a6f1f829db Use deleted copy/assignment (C++11) 2020-04-03 12:17:57 -04:00
Jay Berkenbilt
5806e5c60c QPDFPageObjectHelper::placeFormXObject: use std::string const& (fixes #374) 2020-04-03 12:17:57 -04:00
Jay Berkenbilt
97de12343b Performance: remove Members indirection for Pipeline 2020-04-03 12:17:57 -04:00
Jay Berkenbilt
e9eac2a245 Remove extraneous set of braces 2020-04-03 12:16:24 -04:00
Jay Berkenbilt
38afdcea7b Add QPDFObjectHandle::unsafeShallowCopy 2020-04-03 12:16:24 -04:00
Jay Berkenbilt
07afb668b1 Performance: remove indirection through Members for QPDFObject 2020-04-03 12:16:24 -04:00
Jay Berkenbilt
89f19b7099 Performance: remove Members indirection for QPDFObjectHandle 2020-04-03 12:16:24 -04:00
Jay Berkenbilt
278710fbe8 Refactor QPDFPageObjectHelper::removeUnreferencedResources() 
Refactor removeUnreferencedResources to prepare for filtering form
XObjects.
 2020-03-31 17:39:20 -04:00
Jay Berkenbilt
e5cc065598 Update copyright to 2020 2020-01-26 16:57:27 -05:00
Jay Berkenbilt
a44b5a34a0 Pull wmain -> main code from qpdf.cc into QUtil.cc 2020-01-14 11:40:51 -05:00
Jay Berkenbilt
9a398504ca Refactor QUtil::read_lines_from_file 
This commit adds the preserve_eol flags but doesn't implement EOL
preservation yet.
 2020-01-13 09:19:53 -05:00
Jay Berkenbilt
127a957aee Allow runtime inspection/override of crypto provider 2019-11-09 09:53:42 -05:00
Jay Berkenbilt
d1ffe46c04 AES_PDF: move CBC logic from pipeline to AES_PDF implementation 2019-11-09 08:18:02 -05:00
Jay Berkenbilt
c8cda4f965 AES_PDF: switch to pluggable crypto 2019-11-09 08:18:02 -05:00
Jay Berkenbilt
bb427bd117 SHA2: switch to pluggable crypto 2019-11-09 08:18:02 -05:00
Jay Berkenbilt
4287fcc002 RC4: switch to pluggable crypto 2019-11-09 08:18:02 -05:00
Jay Berkenbilt
ce8f9b6608 MD5: switch to pluggable crypto 2019-11-09 08:18:02 -05:00
Jay Berkenbilt
2de41856a0 QPDFCryptoProvider: initial implementation 2019-11-09 08:18:02 -05:00
Masamichi Hosoda
5a842792b6 Parse Contents in signature dictionary without encryption 
Various PDF digital signing tools do not encrypt /Contents value in
signature dictionary. Adobe Acrobat Reader DC can handle a PDF with
the /Contents value not encrypted.

Write Contents in signature dictionary without encryption

Tests ensure that string /Contents are not handled specially when not
found in sig dicts.
 2019-10-22 16:20:21 -04:00
Masamichi Hosoda
cdc46d78f4 Add QPDFObject::getParsedOffset() 2019-10-22 16:19:06 -04:00
Masamichi Hosoda
50b329ee9f Add QPDFWriter::getWrittenXRefTable() 2019-10-22 16:16:16 -04:00
Masamichi Hosoda
5cf4090aee Add QPDFWriter::getRenumberedObjGen() 2019-10-22 16:16:16 -04:00
Masamichi Hosoda
46ac3e21b3 Add QPDF::getXRefTable() 2019-10-22 16:16:16 -04:00
Masamichi Hosoda
5e0ba12687 Fix /Contents value representation in a signature dictionary 
Table 8.93 "Entries in a signature dictionary" in PDF 1.5 reference
describes that the value of Contents entry is a hexadecimal string
representation when ByteRange is specified.

This commit makes QPDF always uses hexadecimal strings representation
instead of literal strings for it.
 2019-10-22 16:16:16 -04:00
Jay Berkenbilt
6d81f01476 Don't assume char is signed in int conversion tests (fixes #361) 2019-09-17 12:18:09 -04:00
Jay Berkenbilt
babd12c9b2 Add methods QPDF::anyWarnings and QPDF::closeInputSource 2019-08-31 15:51:20 -04:00
Jay Berkenbilt
4fa7b1eb60 Add remove_file and rename_file to QUtil 2019-08-31 15:51:04 -04:00
Jay Berkenbilt
0787ec9620 spell check 2019-08-31 08:43:18 -04:00
Jay Berkenbilt
ba5fb69164 Make popping pipeline stack safer 
Use destructors to pop the pipeline stack, and ensure that code that
pops the stack is actually popping the intended thing.
 2019-08-27 22:27:47 -04:00
Jay Berkenbilt
ad8081daf5 Fix fuzz issue 15442 (overflow checking in BufferInputSource) 2019-08-27 11:26:25 -04:00
Jay Berkenbilt
5da146c8b5 Track separately whether password was user/owner (fixes #159) 2019-08-24 11:01:19 -04:00
Jay Berkenbilt
2794bfb1a6 Add flags to control zlib compression level (fixes #113) 2019-08-23 20:34:21 -04:00
Jay Berkenbilt
dac0598b94 Add ability to set zlib compression level globally 2019-08-23 20:34:21 -04:00
Jay Berkenbilt
3f1ab64066 Pass offset and length to ParserCallbacks::handleObject 2019-08-22 22:54:29 -04:00
Jay Berkenbilt
4b2e72c4cd Test for direct, rather than resolved nulls in parser 
Just because we know an indirect reference is null, doesn't mean we
shouldn't keep it indirect.
 2019-08-22 17:55:16 -04:00
Jay Berkenbilt
4b674b42e4 Mention name tokens in TokenFilter comments 2019-08-22 17:55:16 -04:00
Jay Berkenbilt
225cd9dac2 Protect against coding error of re-entrant parsing 2019-08-22 17:55:16 -04:00
Jay Berkenbilt
42d396f1dd Handle invalid name tokens symmetrically for PDF < 1.2 (fixes #332) 2019-08-19 19:48:27 -04:00
Jay Berkenbilt
e5f504b6c5 Use SparseOHArray in QPDF_Array 2019-08-17 23:02:41 -04:00
Jay Berkenbilt
e83f3308fb SparseOHArray 2019-08-17 23:02:41 -04:00
Jay Berkenbilt
88c1956705 Update comment in PointerHolder 2019-07-13 21:34:46 -04:00
Thorsten Schöning
8f06da7534 Change list to vector for outline helpers (fixes #297) 
This change works around STL problems with Embarcadero C++ Builder
version 10.2, but std::vector is more common than std::list in qpdf,
and this is a relatively new API, so an API change is tolerable.

Thanks to Thorsten Schöning <6223655+ams-tschoening@users.noreply.github.com>
for the fix.
 2019-07-03 20:08:47 -04:00
Jay Berkenbilt
04f45cf652 Treat all linearization errors as warnings 
This also reverts the addition of a new checkLinearization that
distinguishes errors from warnings. There's no practical distinction
between what was considered an error and what was considered a
warning.
 2019-06-23 13:45:45 -04:00
Jay Berkenbilt
6c39aa8763 In shippable code, favor smart pointers (fixes #235) 
Use PointerHolder in several places where manually memory allocation
and deallocation were being used. This helps to protect against memory
leaks when exceptions are thrown in surprising places.
 2019-06-22 16:57:52 -04:00
Jay Berkenbilt
85a3f95a89 qpdf: exit 3 for linearization warnings without errors (fixes #50) 2019-06-22 16:57:51 -04:00
Jay Berkenbilt
1bde5c68a3 Add QUtil::read_file_into_memory 
This code was essentially duplicated between test_driver and
standalone_fuzz_target_runner.
 2019-06-22 10:14:25 -04:00
Jay Berkenbilt
658b5bb3be QPDFWriter: clean up overloaded functions 
In a small number of cases, it makes sense to replace an overloaded
function with a function that takes a default argument. We can do this
now because we've already broken binary compatibility since the last
release.
 2019-06-22 10:13:27 -04:00
Jay Berkenbilt
79f6b4823b Convert remaining public classes to use Members pattern 
Have classes contain only a single private member of type
PointerHolder<Members>. This makes it safe to change the structure of
the Members class without breaking binary compatibility. Many of the
classes already follow this pattern quite successfully. This brings in
the rest of the class that are part of the public API.
 2019-06-22 10:13:27 -04:00
Jay Berkenbilt
864a546af6 Build with -fvisibility=hidden when supported 2019-06-21 22:29:31 -04:00
Jay Berkenbilt
45dac410b5 Remove broken QPDFTokenizer::expectInlineImage 2019-06-21 22:29:31 -04:00
Jay Berkenbilt
25dd3c6750 Remove QPDF::copyForeignObject with unused parameter 2019-06-21 22:29:31 -04:00
Jay Berkenbilt
c6cfd64503 Rename QUtil::strcasecmp to QUtil::str_compare_nocase (fixes #242) 2019-06-21 22:29:31 -04:00
Jay Berkenbilt
d71f05ca07 Fix sign and conversion warnings (major) 
This makes all integer type conversions that have potential data loss
explicit with calls that do range checks and raise an exception. After
this commit, qpdf builds with no warnings when -Wsign-conversion
-Wconversion is used with gcc or clang or when -W3 -Wd4800 is used
with MSVC. This significantly reduces the likelihood of potential
crashes from bogus integer values.

There are some parts of the code that take int when they should take
size_t or an offset. Such places would make qpdf not support files
with more than 2^31 of something that usually wouldn't be so large. In
the event that such a file shows up and is valid, at least qpdf would
raise an error in the right spot so the issue could be legitimately
addressed rather than failing in some weird way because of a silent
overflow condition.
 2019-06-21 13:17:21 -04:00
Jay Berkenbilt
f40ffc9d63 Pl_Flate: constructor's out_bufsize is now unsigned int 
This is the type we need for the underlying zlib implementation.
 2019-06-21 13:17:21 -04:00
Jay Berkenbilt
da30764bce Change QPDFObjectHandle::pipeStreamData's encode_flags type 
Change from unsigned long to int since we pass enumerated type values
to this field.
 2019-06-21 13:17:21 -04:00
Jay Berkenbilt
3608afd5c5 Add new integer accessors to QPDFObjectHandle 2019-06-21 13:17:21 -04:00
Jay Berkenbilt
42306e2ff8 QUtil: add unsigned int/string functions 2019-06-21 13:17:21 -04:00
Jay Berkenbilt
a66828caff New safe type converters in QIntC 2019-06-21 13:17:21 -04:00
Marco Scarpetta
b405e5e1c9 Fix typo (#334) 2019-06-12 14:21:33 -04:00
jbarlow83
2efec4ce7b Fix C++ exception handling when -fvisibility=hidden (#302) 
Fix C++ exception handling when -fvisibility=hidden

Ensure that QPDFExc and QPDFSystemError are marked visible, so that their typeinfo will not be
suppressed when -fvisibility=hidden.

Details:
    https://gcc.gnu.org/wiki/Visibility
 2019-03-11 18:28:29 -04:00
Thorsten Schöning
2a852f08b6 [bcc32 Error] QPDF.hh(803): E2247 'QPDF::Members::resolving' is not accessible 
Full parser context
    QPDF.cc(2): #include ..\..\..\..\src\include\qpdf\QPDF.hh
    QPDF.hh(48): class QPDF
    QPDF.hh(1380): decision to instantiate:  QPDF::ResolveRecorder::ResolveRecorder(QPDF *,const QPDFObjGen &)
    --- Resetting parser context for instantiation...
    QPDF.hh(799): parsing:  QPDF::ResolveRecorder::ResolveRecorder(QPDF *,const QPDFObjGen &)
 2019-03-11 17:07:01 -04:00
Thorsten Schöning
1449d82ae4 [bcc32 Error] QPDFObjectHandle.hh(911): E2247 'QPDFObjectHandle::Members::obj' is not accessible 
Full parser context
    Pl_QPDFTokenizer.cc(1): #include ..\..\..\..\src\include\qpdf\Pl_QPDFTokenizer.hh
    Pl_QPDFTokenizer.hh(29): #include ..\..\..\..\src\include\qpdf/QPDFObjectHandle.hh
    QPDFObjectHandle.hh(51): class QPDFObjectHandle
    QPDFObjectHandle.hh(1052): decision to instantiate: PointerHolder<QPDFObject> QPDFObjectHandle::ObjAccessor::getObject(QPDFObjectHandle &)
    --- Resetting parser context for instantiation...
    QPDFObjectHandle.hh(909): parsing: PointerHolder<QPDFObject> QPDFObjectHandle::ObjAccessor::getObject(QPDFObjectHandle &)
 2019-03-11 17:07:01 -04:00
Thorsten Schöning
86287acfd9 [bcc32 Error] QPDF.hh(223): E2303 Type name expected 
Full parser context
    QPDF.cc(2): #include ..\..\..\..\src\include\qpdf\QPDF.hh
    QPDF.hh(47): class QPDF
 2019-03-11 16:57:16 -04:00
Thorsten Schöning
9b3314042a [bcc32 Error] QPDF.hh(203): E2316 'vector' is not a member of 'std' 
Full parser context
    QPDF.cc(2): #include ..\..\..\..\src\include\qpdf\QPDF.hh
    QPDF.hh(46): class QPDF
 2019-03-11 16:57:16 -04:00
Jay Berkenbilt
fec5bb124c Spell check 2019-01-31 21:41:29 -05:00
Jay Berkenbilt
eb49e07c0a Make inline image token exactly contain the image data 
Do not include the trailing EI, and handle cases where EI is not
preceded by a delimiter. Such cases have been seen in the wild.
 2019-01-31 20:28:44 -05:00
Jay Berkenbilt
5211bcb5ea Externalize inline images (fixes #278) 2019-01-31 10:38:13 -05:00
Jay Berkenbilt
1eb35a355f Exclude space after ID in image data 2019-01-31 10:38:10 -05:00
Jay Berkenbilt
2b6c79bcae Improve locating inline image's EI 
We've actually seen a PDF file in the wild that contained EI
surrounded by delimiters inside the image data, which confused qpdf's
naive code. This significantly improves EI detection.
 2019-01-31 09:26:37 -05:00
Jay Berkenbilt
ec9e310c9e Refactor QPDFTokenizer's inline image handling 
Add a version of expectInlineImage that takes an input source and
searches for EI. This is in preparation for improving the way EI is
found. This commit just refactors the code without changing the
functionality and adds tests to make sure the old and new code behave
identically.
 2019-01-31 09:26:37 -05:00
Jay Berkenbilt
b776dcd2d3 Clean up some private functions 2019-01-29 22:14:20 -05:00
Jay Berkenbilt
2d0885bc11 Clarify documentation for copyForeignObject regarding pages 
Make explicit that copyForeignObject can be used on page objects and
will copy them properly but not update the pages tree.
 2019-01-28 21:53:55 -05:00
Jay Berkenbilt
52f9d326a5 Resolve duplicated page objects (fixes #268) 
When linearizing a file or getting the list of all pages in a file,
detect if the pages tree contains a duplicated page object and, if so,
shallow copy it. This makes it possible to have a one to one mapping
of page positions to page objects.
 2019-01-28 20:29:58 -05:00
Jay Berkenbilt
623f5b664e Convert pages to form XObjects 
Support conversion of pages to form XObjects and placement of form
XObjects on pages.
 2019-01-27 07:50:30 -05:00
Jay Berkenbilt
8cb245739c Add QPDFObjectHandle::getUniqueResourceName 2019-01-27 07:50:30 -05:00
Jay Berkenbilt
009767d97a Handle inheritable page attributes 
Add getAttribute for handling inheritable page attributes, and fix
getPageImages and annotation flattening code to use it.
 2019-01-25 22:30:05 -05:00
Jay Berkenbilt
e1271361c5 Add documentation for features since 8.3.0 2019-01-19 15:58:51 -05:00
Jay Berkenbilt
c18ee440a3 mingw workaround for QPDFExc destructor 
mingw doesn't like it when you don't inline empty virtual destructors.
 2019-01-19 10:14:07 -05:00
Jay Berkenbilt
e87d149918 Add QUtil::possible_repaired_encodings 2019-01-17 11:43:56 -05:00
Jay Berkenbilt
6ec22f117d Modernize encryption API for more granularity 
Setting encryption permissions for R >= 3 set permission bits in
groups corresponding to menu options in Acrobat 5. The new API allows
the bits to be set individually.
 2019-01-17 11:43:56 -05:00
Jay Berkenbilt
4630377731 Add status-reporting transcoders to QUtil 2019-01-17 11:43:56 -05:00
Jay Berkenbilt
8f389f14c0 QUtil::analyze_encoding 2019-01-17 11:43:56 -05:00
Jay Berkenbilt
698485468a Move remaining existing transcoding to QUtil 2019-01-17 11:43:56 -05:00
Jay Berkenbilt
654c0e8caf Allow adding the same page more than once in --pages (fixes #272) 2019-01-12 10:01:47 -05:00
Jay Berkenbilt
5f128b9a27 Fix version number in comment 2019-01-11 07:46:53 -05:00
Jay Berkenbilt
d24a120c7f Add QPDF::setImmediateCopyFrom 2019-01-10 22:35:08 -05:00
Jay Berkenbilt
3472f6c984 Update copyrights for 2019 2019-01-07 07:54:55 -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
a70fbaaf50 Honor other base encodings when generating appearances 2019-01-05 23:01:59 -05:00
Jay Berkenbilt
b341d742db Add WinAnsi and MacRoman encoding 2019-01-05 23:01:44 -05:00
Jay Berkenbilt
089ce5902e Move utf8_to_utf16 into QUtil 2019-01-05 22:59:27 -05:00
Jay Berkenbilt
2e342ee5bb Spell check 2019-01-04 21:33:14 -05:00
Jay Berkenbilt
ee2aad4381 Add CLI flags for image optimization 2019-01-04 21:33:14 -05:00
Jay Berkenbilt
16fd6e64f9 Add QPDFWriter::getFinalVersion (fixes #266) 2019-01-04 12:37:22 -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
158156d506 Add basic appearance stream generation 2019-01-04 08:00:19 -05:00
Jay Berkenbilt
02281632cc Add QUtil::utf8_to_ascii 2019-01-03 23:18:13 -05:00
Jay Berkenbilt
b55567a0fa Add special case setV code for button fields 2019-01-03 23:18:13 -05:00
Jay Berkenbilt
e3144ac417 Add form fields to json output 
Also add some additional methods for detecting form field types to
assist in the json creation and for later use.
 2019-01-03 23:18:13 -05:00
Jay Berkenbilt
ca94ac68d9 Honor flags when flattening annotations 2019-01-03 11:59:55 -05:00
Jay Berkenbilt
f78ea057ca Switch annotation flattening to use the form xobjects 
Instead of directly putting the contents of the annotation appearance
streams into the page's content stream, add commands to render the
form xobjects directly. This is a more robust way to do it than the
original solution as it works properly with patterns and avoids
problems with resource name clashes between the pages and the form
xobjects.
 2019-01-02 21:49:47 -05:00
Jay Berkenbilt
3b8ce4f12a Annotation flattening including form fields 
Flatten annotations by integrating their appearance streams into the
content stream of the containing page. In the case of form fields,
only flatten if /NeedAppearance is false (or equivalently absent). If
flattening form fields, also remove /AcroForm from the document
catalog.
 2019-01-01 08:14:15 -05:00
Jay Berkenbilt
95d6b17a89 Add QPDFObjectHandle::mergeDictionary() 2019-01-01 08:12:56 -05:00
Jay Berkenbilt
104fd6da52 Add matrix and annotation appearance stream handling 
Generate page content fragment for rendering appearance streams
including all matrix calculation.
 2019-01-01 08:07:21 -05:00
Jay Berkenbilt
5059ec0d35 Add Matrix class under QPDFObjectHandle 2018-12-31 23:02:43 -05:00
Jay Berkenbilt
3440ea7d3c JSON::serialize -> unparse 
Unparse is admittedly strange, but I'd rather be strange and
consistent, and everything else in the qpdf library uses unparse to
serialize. (If you're reading this, the convention of using "unparse"
comes from the "clu" programming language.)
 2018-12-25 11:52:21 -05:00
Jay Berkenbilt
fa3664357b Move numrange code from qpdf.cc to QUtil.cc 
Also move tests to libtests.
 2018-12-21 19:11:57 -05:00
Jay Berkenbilt
d5d179f441 Add document and object helpers for outlines (bookmarks) 2018-12-21 19:11:57 -05:00
Jay Berkenbilt
30a0c070e4 Add QPDFObjectHandle::getJSON() 2018-12-21 18:34:56 -05:00
Jay Berkenbilt
651179b5da Add simple JSON serializer 2018-12-21 18:34:56 -05:00
Jay Berkenbilt
0776c00129 Add QPDFNameTreeObjectHelper 2018-12-21 18:34:56 -05:00
Jay Berkenbilt
d2f3975948 Add missing virtual destructors to all helper classes 2018-12-21 18:34:56 -05:00
Jay Berkenbilt
6ef9e31233 Add QPDFPageLabelDocumentHelper 2018-12-18 16:59:24 -05:00
Jay Berkenbilt
f38df27aa3 Add QPDFNumberTreeObjectHelper 2018-12-18 16:46:10 -05:00
Jay Berkenbilt
077d3d4512 Add QPDFObjectHandle::wrapInArray() 
Wrap an object in an array if it is not already an array.
 2018-12-18 16:45:48 -05:00
Jay Berkenbilt
9caf005d89 Fix typo in header file 2018-12-18 16:27:36 -05:00
Jay Berkenbilt
b4bdc42b4f New exception class QPDFSystemError (fixes #221) 2018-08-13 20:01:51 -04:00
Jay Berkenbilt
3873f5fd9b Protect headers with compliant identifiers (fixes #233) 2018-08-12 14:10:32 -04:00
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
651b51f056 Add QPDF_DLL to public destructors (fixes #220) 
A few public destructors were missing QPDF_DLL, which could cause some
Windows applications to fail to link.
 2018-08-04 20:08:06 -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
5db39a681a Windows fixes 2018-06-22 17:01:18 -04:00
Jay Berkenbilt
d34ab8a936 spell check 2018-06-22 16:14:54 -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
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
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
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
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
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
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
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
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
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
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 
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 
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