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189 Commits

Author SHA1 Message Date
Jay Berkenbilt 750aca5b94 First increment of improving handling of weak crypto (fixes #358) 2021-11-11 12:24:15 -05:00
Jay Berkenbilt 9b28933647 Check object ownership when adding 
When adding a QPDFObjectHandle to an array or dictionary, if possible,
check if the new object belongs to the same QPDF. This makes it much
easier to find incorrect code than waiting for the situation to be
detected when the file is written.
 2021-11-04 12:29:42 -04:00
Jay Berkenbilt 73752683c9 Fix overlay/underlay on page with no resources (fixes #527) 2021-11-03 16:00:05 -04:00
Jay Berkenbilt 33a47d5c3c Make QPDF::findPage public (fixes #516) 
This was originally not public because I wanted to get rid fo the
pages cache, but I recently realized there were deep reasons not to do
that, and the author of pikepdf wanted this, so I decided to make it
public.
 2021-11-03 09:43:17 -04:00
Jay Berkenbilt 7ed991343b Better diagnostics when --pages is not closed (fixes #555) 2021-11-02 16:22:37 -04:00
Jay Berkenbilt 30ac51bc78 Exclude unreferenced objects in object streams (fixes #520) 2021-05-08 09:42:09 -04:00
Jay Berkenbilt 8971443e46 QPDF::addPage*: handle duplicate pages more robustly 2021-04-05 10:58:10 -04:00
Jay Berkenbilt addc0672d1 Tweak form copying to avoid gratuitous field renames 
When copying a page from the original file to the output in --pages,
don't alter the fields or annotations for the first copy of each page.
 2021-03-05 05:31:15 -05:00
Jay Berkenbilt 9fb174b9e9 Major rework of handling form fields when copying pages (fixes #509) 2021-03-04 15:08:37 -05:00
Jay Berkenbilt 887f35efaa When resolving font from /DR, copy it into resources 2021-03-04 15:08:36 -05:00
Jay Berkenbilt d7ffdfa994 Add optional conflict detection to mergeResources 
Also improve behavior around direct vs. indirect resources.
 2021-03-04 15:08:36 -05:00
Jay Berkenbilt b444ab3352 Fix typos in coverage cases 2021-03-03 17:05:49 -05:00
Jay Berkenbilt fa2516df71 Fix behavior for finding /Q, /DA, and /DR for form fields 
If not found in the field hierarchy, /Q and /DA are supposed to be
looked up in the document-level form dictionary. /DR is supposed to
only come from the document dictionary.
 2021-03-03 17:05:19 -05:00
Jay Berkenbilt be3a8c0e7a Keep only referenced form fields in --pages 2021-02-23 08:26:21 -05:00
Jay Berkenbilt 83216e640c Preserve form fields when splitting pages (fixes #340) 2021-02-22 18:42:06 -05:00
Jay Berkenbilt 61d41e2e88 Add copyAnnotations, use with overlay/underlay (fixes #395) 2021-02-22 18:42:06 -05:00
Jay Berkenbilt a9ae8cadc6 Add transformAnnotations and fix flattenRotations to use it 2021-02-21 17:13:09 -05:00
Jay Berkenbilt 7540d2082a Explicitly override inherited rotate in flattenRotations 2021-02-21 14:58:45 -05:00
Jay Berkenbilt ad34b9c278 Implement helpers for file attachments 2021-02-10 06:57:37 -05:00
Jay Berkenbilt e076c9bf08 Remove erroneous handling of /EFF for stream decryption 
I thought /EFF was supposed to be used as a default for decrypting
embedded file streams, but actually it's supposed to be advice to a
conforming writer about handling new ones. This makes sense since the
findAttachmentStreams code, which is not actually needed, was never
right.
 2021-02-06 17:08:41 -05:00
Jay Berkenbilt 63158cf546 Add --password-file=filename option (fixes #499) 2021-02-04 16:48:53 -05:00
Jay Berkenbilt faa2e3ddfd Handle older PDFs whose form XObjects inherit resources (fixes #494) 
When removing unreferenced resources, notice if a page (recursively)
contains a form XObject with unreferenced resources, and count any
such resources as referenced by the page.
 2021-02-02 18:06:05 -05:00
Jay Berkenbilt e7e20772ed name/number trees: remove 2021-01-26 09:12:23 -05:00
Jay Berkenbilt 5816fb44b8 name/number trees: insertAfter 2021-01-25 15:39:10 -05:00
Jay Berkenbilt 16a9bb3f6f name/number trees: newEmpty, increment/decrement end() 2021-01-25 15:39:10 -05:00
Jay Berkenbilt b5614f611d Implement repair and insert for name/number trees 2021-01-24 19:31:45 -05:00
Jay Berkenbilt d61ffb65d0 Add new constructors for name/number tree helpers 
Add constructors that take a QPDF object so we can issue warnings and
create new indirect objects.
 2021-01-24 03:27:26 -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 e7a8554563 QPDFPageObjectHelper::getPageImages: support form XObjects 2021-01-02 11:33:36 -05:00
Jay Berkenbilt 12ecd2019a Add QPDFObjectHandle::setFilterOnWrite 2020-12-28 12:58:19 -05:00
Jay Berkenbilt 858c7b89bc Let optimize filter stream parameters instead of making them direct 
Also removes preclusion of stream references in stream parameters of
filterable streams and reduces write times by about 8% by eliminating
an extra traversal of the objects.
 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 cc8895078a Add QPDFObjectHandle::makeDirect(bool allow_streams) 2020-12-26 08:48:18 -05:00
Jay Berkenbilt 2050977099 Add QPDFObjectHandle manipulation to C API 2020-11-28 19:48:07 -05:00
Jay Berkenbilt a7ef572c84 Small enhancement to --pages argument parsing 2020-11-09 11:12:34 -05:00
Jay Berkenbilt b30deaeeab Avoid merging adjacent tokens when concatenating contents (fixes #444) 2020-10-23 08:00:04 -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 67d5ed3a64 Implement remove-unreferenced-resources=auto 2020-04-04 13:19:49 -04:00
Jay Berkenbilt dac65a21fb Look in form XObjects when removing unreferenced resources (fixes #373) 
If a page contains a form XObject, also filter the form XObject and
remove its unreferenced resources.
 2020-03-31 17:39:20 -04:00
Jay Berkenbilt 57c01ef81f In qdf mode, don't write extra XRef streams (fixes #386) 
fix-qdf assumes there is exactly one XRef stream and that it is at the
end of the file.
 2020-01-26 16:50:57 -05:00
Jay Berkenbilt bbc2f8ffae Bug fix: handle ColorSpace lookup for inline images (fixes #392) 
If the value of /CS in the inline image dictionary was is key in the
page's /Resource -> /ColorSpace dictionary, properly resolve it by
referencing the proper colorspace, and not just the name, in the
external image dictionary.
 2020-01-26 15:29:10 -05:00
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 8b1e307741 Warn for duplicated dictionary keys (fixes #345) 2019-09-19 20:22:34 -04:00
Jay Berkenbilt 47a38a942d Detect stream in object stream, fixing fuzz 16214 
It's detected in QPDFWriter instead of at parse time because I can't
figure out how to construct a test case in a reasonable time. This
commit moves the fuzz file into the regular test suite for a QTC
coverage case.
 2019-08-28 12:49:04 -04:00
Jay Berkenbilt 5da146c8b5 Track separately whether password was user/owner (fixes #159) 2019-08-24 11:01:19 -04:00
Jay Berkenbilt 3f3dbe22ea Remove array null flattening 
For some reason, qpdf from the beginning was replacing indirect
references to null with literal null in arrays even after removing the
old behavior of flattening scalar references. This seems like a bad
idea.
 2019-08-22 17:55:16 -04:00
Jay Berkenbilt ae5bd7102d Accept extraneous space before xref (fixes #341) 2019-08-19 22:24:53 -04:00
Jay Berkenbilt 8a9086a689 Accept extraneous space after stream keyword (fixes #329) 2019-08-19 21:43:44 -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 45dac410b5 Remove broken QPDFTokenizer::expectInlineImage 2019-06-21 22:29:31 -04:00