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344 Commits

Author SHA1 Message Date
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