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2186 lines
85 KiB
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2186 lines
85 KiB
Plaintext
2019-01-07 Jay Berkenbilt <ejb@ql.org>
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* 8.3.0: release
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* Add sample completion files in completions. These can be used by
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packagers to install on the system wherever bash and zsh keep
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their vendor-supplied completions.
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* Add configure flag --enable-check-autofiles, which is on by
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default. Packagers whose packaging systems automatically refresh
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autoconf or libtool files should pass --disable-check-autofiles to
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./configure to suppress warnings about automatically generated
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files being outdated.
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2019-01-06 Jay Berkenbilt <ejb@ql.org>
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* Remove the restriction in most cases that the source QPDF used
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in a copyForeignObject call has to stick around until the
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destination QPDF is written. The exceptional case is when the
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source stream gets is data using a
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QPDFObjectHandle::StreamDataProvider. For a more in-depth
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discussion, see comments around copyForeignObject in QPDF.hh.
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Fixes #219.
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2019-01-05 Jay Berkenbilt <ejb@ql.org>
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* When generating appearances, if the font uses one of the
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standard, built-in encodings, restrict the character set to that
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rather than just to ASCII. This will allow most appearances to
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contain characters from the ISO-Latin-1 range plus a few
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additional characters.
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* Add methods QUtil::utf8_to_win_ansi and
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QUtil::utf8_to_mac_roman.
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* Add method QUtil::utf8_to_utf16.
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2019-01-04 Jay Berkenbilt <ejb@ql.org>
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* Add new option --optimize-images, which recompresses every image
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using DCT (JPEG) compression as long as the image is not already
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compressed with lossy compression and recompressing the image
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reduces its size. The additional options --oi-min-width,
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--oi-min-height, and --oi-min-area prevent recompression of images
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whose width, height, or pixel area (width * height) are below a
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specified threshold.
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* Add new option --collate. When specified, the semantics of
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--pages change from concatenation to collation. See the manual for
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a more detailed discussion. Fixes #259.
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* Add new method QPDFWriter::getFinalVersion, which returns the
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PDF version that will ultimately be written to the final file. See
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comments in QPDFWriter.hh for some restrictions on its use. Fixes
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#266.
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* When unexpected errors are found while checking linearization
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data, print an error message instead of calling assert, which
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cause the program to crash. Fixes #209, #231.
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* Detect and recover from dangling references. If a PDF file
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contained an indirect reference to a non-existent object (which is
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valid), when adding a new object to the file, it was possible for
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the new object to take the object ID of the dangling reference,
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thereby causing the dangling reference to point to the new object.
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This case is now prevented. Fixes #240.
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2019-01-03 Jay Berkenbilt <ejb@ql.org>
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* Add --generate-appearances flag to the qpdf command-line tool to
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trigger generation of appearance streams.
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* Fix behavior of form field value setting to handle the following
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cases:
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- Strings are always written as UTF-16
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- Check boxes and radio buttons are handled properly with
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synchronization of values and appearance states
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* Define constants in qpdf/Constants.h for interpretation of
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annotation and form field flags
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* Add QPDFAnnotationObjectHelper::getFlags
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* Add many new methods to QPDFFormFieldObjectHelper for querying
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flags and field types
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* Add new methods for appearance stream generation. See comments
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in QPDFFormFieldObjectHelper.hh for generateAppearance() for a
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description of limitations.
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- QPDFAcroFormDocumentHelper::generateAppearancesIfNeeded
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- QPDFFormFieldObjectHelper::generateAppearance
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* Bug fix: when writing form field values, always write string
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values encoded as UTF-16.
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* Add method QUtil::utf8_to_ascii, which returns an ASCII string
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for a UTF-8 string, replacing out-of-range characters with a
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specified substitute.
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2019-01-02 Jay Berkenbilt <ejb@ql.org>
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* Add method QPDFObjectHandle::getResourceNames that returns a set
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of strings representing all second-level keys in a dictionary
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(i.e. all keys of all direct dictionary members).
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2018-12-31 Jay Berkenbilt <ejb@ql.org>
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* Add --flatten-annotations flag to the qpdf command-line tool for
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annotation flattening.
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* Add methods for flattening form fields and annotations:
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- QPDFPageDocumentHelper::flattenAnnotations - integrate
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annotation appearance streams into page contents with special
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handling for form fields: if appearance streams are up to date
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(/NeedAppearances is false in /AcroForm), the /AcroForm key of
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the document catalog is removed. Otherwise, a warning is
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issued, and form fields are ignored. Non-form-field
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annotations are always flattened if an appearance stream can
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be found.
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- QPDFAnnotationObjectHelper::getPageContentForAppearance -
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generate the content stream fragment to render an appearance
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stream in a page's content stream as a form xobject. Called by
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flattenAnnotations.
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* Add method QPDFObjectHandle::mergeResources(), which merges
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resource dictionaries. See detailed description in
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QPDFObjectHandle.hh.
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* Add QPDFObjectHandle::Matrix, similar to
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QPDFObjectHandle::Rectangle, as a convenience class for
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six-element arrays that are used as matrices.
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2018-12-23 Jay Berkenbilt <ejb@ql.org>
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* When specifying @arg on the command line, if the file "arg" does
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not exist, just treat this is a normal argument. This makes it
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easier to deal with files whose names start with the @ character.
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Fixes #265.
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* Tweak completion so it works with zsh as well using
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bashcompinit.
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2018-12-22 Jay Berkenbilt <ejb@ql.org>
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* Add new options --json, --json-key, and --json-object to
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generate a json representation of the PDF file. This is described
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in more depth in the manual. You can also run qpdf --json-help to
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get a description of the json format.
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2018-12-21 Jay Berkenbilt <ejb@ql.org>
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* Allow --show-object=trailer for showing the document trailer.
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* You can now use eval $(qpdf --completion-bash) to enable bash
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completion for qpdf. It's not perfect, but it works pretty well.
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2018-12-19 Jay Berkenbilt <ejb@ql.org>
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* When splitting pages using --split-pages, the outlines
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dictionary and some supporting metadata are copied into the split
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files. The result is that all bookmarks from the original file
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appear, and those that point to pages that are preserved work
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while those that point to pages that are not preserved don't do
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anything. This is an interim step toward proper support for
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bookmark preservation in split files.
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* Add QPDFOutlineDocumentHelper and QPDFOutlineObjectHelper for
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handling outlines (bookmarks) including bidirectionally mapping
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between bookmarks and pages. Initially there is no support for
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modifying the outlines hierarchy.
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2018-12-18 Jay Berkenbilt <ejb@ql.org>
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* New method QPDFObjectHandle::getJSON() returns a JSON object
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with a partial representation of the object. See
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QPDFObjectHandle.hh for a detailed description.
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* Add a simple JSON serializer. This is not a complete or
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general-purpose JSON library. It allows assembly and serialization
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of JSON structures with some restrictions, which are described in
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the header file.
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* Add QPDFNameTreeObjectHelper class. This class provides useful
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methods for dealing with name trees, which are discussed in
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section 7.9.6 of the PDF spec (ISO-32000).
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* Preserve page labels when merging and splitting files. Prior
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versions of qpdf simply preserved the page label information from
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the first file, which usually wouldn't make any sense in the
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merged file. Now any page that had a page number in any original
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file will have the same page number after merging or splitting.
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* Add QPDFPageLabelDocumentHelper class. This is a document helper
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class that provides useful methods for dealing with page labels.
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It abstracts the fact that they are stored as number trees and
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deals with interpolating intermediate values that are not in the
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tree. It also has helper functions used by the qpdf command line
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tool to preserve page labels when merging and splitting files.
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* Add QPDFNumberTreeObjectHelper class. This class provides useful
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methods for dealing with number trees, which are discussed in
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section 7.9.7 of the PDF spec (ISO-32000). Page label dictionaries
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are represented as number trees.
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* New method QPDFObjectHandle::wrapInArray returns the object
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itself if it is an array. Otherwise, it returns an array
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containing the object. This is useful for dealing with PDF data
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that is sometimes expressed as a single element and sometimes
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expressed as an array, which is a somewhat common PDF idiom.
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2018-10-11 Jay Berkenbilt <ejb@ql.org>
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* Files generated by autogen.sh are now committed so that it is
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possible to build on platforms without autoconf directly from a
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clean checkout of the repository. The configure script detects if
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the files are out of date when it also determines that the tools
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are present to regenerate them.
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* Add build in Azure Pipelines, now that it is free for open
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source projects.
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2018-08-18 Jay Berkenbilt <ejb@ql.org>
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* 8.2.1: release
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* Add new option --keep-files-open=[yn] to control whether qpdf
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keeps files open when merging. Prior to version 8.1.0, qpdf always
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kept all files open, but this meant that the number of files that
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could be merged was limited by the operating system's open file
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limit. Version 8.1.0 opened files as they were referenced, but
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this caused a major performance impact. Version 8.2.0 optimized
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the performance but did so in a way that, for local file systems,
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there was a small but unavoidable performance hit, but for
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networked file systems, the performance impact could be very high.
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Starting with version 8.2.1, the default behavior is that files
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are kept open if no more than 200 files are specified, but that
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the behavior can be explicitly overridden with the
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--keep-files-open flag. If you are merging more than 200 files but
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less than the operating system's max open files limit, you may
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want to use --keep-files-open=y. If you are using a local file
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system where the overhead is low and you might sometimes merge
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more than the OS limit's number of files, you may want to specify
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--keep-files-open=n. Fixes #237.
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2018-08-16 Jay Berkenbilt <ejb@ql.org>
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* 8.2.0: release
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2018-08-14 Jay Berkenbilt <ejb@ql.org>
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* For the mingw builds, change the name of the DLL import library
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from libqpdf.a to libqpdf.dll.a to avoid confusing it with a
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static library. This potentially clears the way for supporting a
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static library in the future, though presently, the qpdf Windows
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build only builds the DLL and executables. Fixes #225.
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2018-08-13 Jay Berkenbilt <ejb@ql.org>
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* Add new class QPDFSystemError, derived from std::runtime_error,
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which is now thrown by QUtil::throw_system_error. This enables the
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triggering errno value to be retrieved. Fixes #221.
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2018-08-12 Jay Berkenbilt <ejb@ql.org>
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* qpdf command line: add --no-warn option to suppress issuing
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warning messages. If there are any conditions that would have
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caused warnings to be issued, the exit status is still 3.
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* Rewrite the internals of Pl_Buffer to be much more efficient in
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use of memory at a very slight performance cost. The old
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implementation could cause memory usage to go out of control for
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files with large images compressed using the TIFF predictor.
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Fixes #228.
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2018-08-05 Jay Berkenbilt <ejb@ql.org>
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* Bug fix: end of line characters were not properly handled inside
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strings in some cases. Fixes #226.
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* Bug fix: infinite loop on progress reporting for very small
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files. Fixes #230.
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2018-08-04 Jay Berkenbilt <ejb@ql.org>
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* Performance fix: optimize page merging operation to avoid
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unnecessary open/close calls on files being merged. Fixes #217.
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* Add ClosedFileInputSource::stayOpen method, enabling a
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ClosedFileInputSource to stay open during manually indicated
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periods of high activity, thus reducing the overhead of frequent
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open/close operations.
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2018-06-23 Jay Berkenbilt <ejb@ql.org>
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* 8.1.0: release
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2018-06-22 Jay Berkenbilt <ejb@ql.org>
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* Bug fix: properly decrypt files with 40-bit keys that use
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revision 3 of the security handler. Prior to this, qpdf was
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reporting "invalid password" in this case. Fixes #212.
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* With --verbose, print information about each input file when
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merging files.
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* Add progress reporting to QPDFWriter. Programmatically, you can
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register a progress reporter with registerProgressReporter(). From
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the command line, passing --progress will give progress indicators
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in increments of no less than 1% as output files are written.
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Fixes #200.
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* Add new method QPDF::getObjectCount(). This gives an approximate
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(upper bound) account of objects in the QPDF object.
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* Don't leave files open when merging. This makes it possible
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merge more files at once than the operating system's open file
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limit. Fixes #154.
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* Add ClosedFileInputSource class, and input source that keeps its
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input file closed when not reading it. At the expense of some
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performance, this allows you to operate on many files without
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opening too many files at the operating system level.
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* Add new option --preserve-unreferenced-resources, which
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suppresses removal of unreferenced objects from page resource
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dictionaries during page splitting operations.
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2018-06-21 Jay Berkenbilt <ejb@ql.org>
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* Add method QPDFPageObjectHelper::removeUnreferencedResources and
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also QPDFPageDocumentHelper::removeUnreferencedResources that
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calls the former on every page. This method removes any XObject or
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Font references from the page's resource dictionary if they are
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not referenced anywhere in any of the content streams. This
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significantly reduces the size of split files whose pages
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internally share resource dictionaries. Fixes #203.
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* The --rotate option to qpdf no longer requires an explicit page
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range. You can now rotate all pages of a document with
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qpdf --rotate=angle in.pdf out.pdf. Fixes #211.
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* Create examples/pdf-set-form-values.cc to illustrate use of
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interactive form helpers.
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* Added methods QPDFAcroFormDocumentHelper::setNeedAppearances and
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added methods to QPDFFormFieldObjectHelper to set a field's value,
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optionally updating the document to indicate that appearance
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streams need to be regenerated.
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* Added QPDFObject::newUnicodeString and QPDFObject::unparseBinary
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to allow for more convenient creation of strings that are
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explicitly encoded in UTF-16 BE. This is useful for creating
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Unicode strings that appear outside of content streams, such as in
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page labels, outlines, form field values, etc.
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2018-06-20 Jay Berkenbilt <ejb@ql.org>
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* Added new classes QPDFAcroFormDocumentHelper,
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QPDFFormFieldObjectHelper, and QPDFAnnotationObjectHelper to
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assist with working with interactive forms in PDF files. At
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present, API methods for reading forms, form fields, and widget
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annotations have been added. It is likely that some additional
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methods for modifying forms will be added in the future. Note that
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qpdf remains a library whose function is primarily focused around
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document structure and metadata rather than content. As such, it
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is not expected that qpdf will have higher level APIs for
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generating form contents, but qpdf will hopefully gain the
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capability to deal with the bookkeeping aspects of wiring up all
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the objects, which could make it a useful library for other
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software that works with PDF interactive forms. PDF forms are
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complex, and the terminology around them is confusing. Please see
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comments at the top of QPDFAcroFormDocumentHelper.hh for
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additional discussion.
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* Added new classes QPDFPageDocumentHelper and QPDFPageObjectHelper
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for page-level API functions. These classes introduce a new API
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pattern of document helpers and object helpers in qpdf. The helper
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classes provide a higher level API for working with certain types
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of structural features of PDF while still staying true to qpdf's
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philosophy of not isolating the user from the underlying
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structure. Please see the chapter in the documentation entitled
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"Design and Library Notes" for additional discussion. The examples
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have also been updated to use QPDFPageDocumentHelper and
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QPDFPageObjectHelper when performing page-level operations.
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2018-06-19 Jay Berkenbilt <ejb@ql.org>
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* New QPDFObject::Rectangle class will convert to and from arrays
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of four numerical values. Rectangles are used in various places
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within the PDF file format and are called out as a specific data
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type in the PDF specification.
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2018-05-12 Jay Berkenbilt <ejb@ql.org>
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* In newline before endstream mode, an extra newline was not
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inserted prior to the endstream that ends object streams.
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Fixes #205.
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2018-04-15 Jay Berkenbilt <ejb@ql.org>
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* Arbitrarily limit the depth of data structures represented by
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direct object. This is CVE-2018-9918. Fixes #202.
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2018-03-06 Jay Berkenbilt <ejb@ql.org>
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* 8.0.2: release
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* Properly handle pages with no contents. Fixes #194.
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2018-03-05 Jay Berkenbilt <ejb@ql.org>
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* Improve handling of loops while following cross reference
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tables. Fixes #192.
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2018-03-04 Jay Berkenbilt <ejb@ql.org>
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* 8.0.1: release
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* On the command line when specifying page ranges, support
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preceding a page number by "r" to indicate that it should be
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counted from the end. For example, the range r3-r1 would indicate
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the last three pages of a document.
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2018-03-03 Jay Berkenbilt <ejb@ql.org>
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* Ignore zlib data check errors while uncompressing streams. This
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is consistent with behaviors of other readers and enables handling
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of some incorrectly written zlib streams. Fixes #191.
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2018-02-25 Jay Berkenbilt <ejb@ql.org>
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* 8.0.0: release
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2018-02-17 Jay Berkenbilt <ejb@ql.org>
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* Fix QPDFObjectHandle::getUTF8Val() to properly handle strings
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that are encoded with PDF Doc Encoding. Fixes #179.
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* Add qpdf_check_pdf to the "C" API. This method just attempts to
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read the entire file and produce no output, making possible to
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assess whether the file has any errors that qpdf can detect.
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* Major enhancements to handling of type errors within the qpdf
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library. This fix is intended to eliminate those annoying cases
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where qpdf would exit with a message like "operation for
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dictionary object attempted on object of wrong type" without
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providing any context. Now qpdf keeps enough context to be able to
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issue a proper warning and to handle such conditions in a sensible
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way. This should greatly increase the number of bad files that
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qpdf can recover, and it should make it much easier to figure out
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what's broken when a file contains errors.
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* Error message fix: replace "file position" with "offset" in
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error messages that report lexical or parsing errors. Sometimes
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it's an offset in an object stream or a content stream rather than
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a file position, so this makes the error message less confusing in
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those cases. It still requires some knowledge to find the exact
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position of the error, since when it's not a file offset, it's
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probably an offset into a stream after uncompressing it.
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* Error message fix: correct some cases in which the object that
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contained a lexical error was omitted from the error message.
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* Error message fix: improve file name in the error message when
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there is a parser error inside an object stream.
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2018-02-11 Jay Berkenbilt <ejb@ql.org>
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* Add QPDFObjectHandle::filterPageContents method to provide a
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different interface for applying token filters to page contents
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without modifying the ultimate output.
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2018-02-04 Jay Berkenbilt <ejb@ql.org>
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* Changes listed on today's date are numerous and reflect
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significant enhancements to qpdf's lexical layer. While many
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nuances are discussed and a handful of small bugs were fixed, it
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should be emphasized that none of these issues have any impact on
|
|
any output or behavior of qpdf under "normal" operation. There are
|
|
some changes that have an effect on content stream normalization
|
|
as with qdf mode or on code that interacts with PDF files
|
|
lexically using QPDFTokenizer. There are no incompatible changes
|
|
for normal operation. There are a few changes that will affect the
|
|
exact error messages issued on certain bad files, and there is a
|
|
small non-compatible enhancement regarding the behavior of
|
|
manually constructed QPDFTokenizer::Token objects. Users of the
|
|
qpdf command line tool will see no changes other than the addition
|
|
of a new command-line flag and possibly some improved error
|
|
messages.
|
|
|
|
* Significant lexer (tokenizer) enhancements. These are changes to
|
|
the QPDFTokenizer class. These changes are of concern only to
|
|
people who are operating with PDF files at the lexical layer using
|
|
qpdf. They have little or no impact on most high-level interfaces
|
|
or the command-line tool.
|
|
|
|
New token types tt_space and tt_comment to recognize whitespace
|
|
and comments. this makes it possible to tokenize a PDF file or
|
|
stream and preserve everything about it.
|
|
|
|
For backward compatibility, space and comment tokens are not
|
|
returned by the tokenizer unless QPDFTokenizer.includeIgnorable()
|
|
is called.
|
|
|
|
Better handling of null bytes. These are now included in space
|
|
tokens rather than being their own "tt_word" tokens. This should
|
|
have no impact on any correct PDF file and has no impact on
|
|
output, but it may change offsets in some error messages when
|
|
trying to parse contents of bad files. Under default operation,
|
|
qpdf does not attempt to parse content streams, so this change is
|
|
mostly invisible.
|
|
|
|
Bug fix to handling of bad tokens at ends of streams. Now, when
|
|
allowEOF() has been called, these are treated as bad tokens
|
|
(tt_bad or an exception, depending on invocation), and a
|
|
separate tt_eof token is returned. Before the bad token
|
|
contents were returned as the value of a tt_eof token. tt_eof
|
|
tokens are always empty now.
|
|
|
|
Fix a bug that would, on rare occasions, report the offset in an
|
|
error message in the wrong space because of spaces or comments
|
|
adjacent to a bad token.
|
|
|
|
Clarify in comments exactly where the input source is positioned
|
|
surrounding calls to readToken and getToken.
|
|
|
|
* Add a new token type for inline images. This token type is only
|
|
returned by QPDFTokenizer immediately following a call to
|
|
expectInlineImage(). This change includes internal refactoring of
|
|
a handful of places that all separately handled inline images, The
|
|
logic of detecting inline images in content streams is now handled
|
|
in one place in the code. Also we are more flexible about what
|
|
characters may surround the EI operator that marks the end of an
|
|
inline image.
|
|
|
|
* New method QPDFObjectHandle::parsePageContents() to improve upon
|
|
QPDFObjectHandle::parseContentStream(). The parseContentStream
|
|
method used to operate on a single content stream, but was fixed
|
|
to properly handle pages with contents split across multiple
|
|
streams in an earlier release. The new method parsePageContents()
|
|
can be called on the page object rather than the value of the
|
|
page dictionary's /Contents key. This removes a few lines of
|
|
boiler-plate code from any code that uses parseContentStream, and
|
|
it also enables creation of more helpful error messages if
|
|
problems are encountered as the error messages can include
|
|
information about which page the streams come from.
|
|
|
|
* Update content stream parsing example
|
|
(examples/pdf-parse-content.cc) to use new
|
|
QPDFObjectHandle::parsePageContents() method in favor of the older
|
|
QPDFObjectHandle::parseContentStream() method.
|
|
|
|
* Bug fix: change where the trailing newline is added to a stream
|
|
in QDF mode when content normalization is enabled (the default for
|
|
QDF mode). Before, the content normalizer ensured that the output
|
|
ended with a trailing newline, but this had the undesired side
|
|
effect of including the newline in the stream data for purposes of
|
|
length computation. QPDFWriter already appends a newline without
|
|
counting in length for better readability. Ordinarily this makes
|
|
no difference, but in the rare case of a page's contents being
|
|
split in the middle of a token, the old behavior could cause the
|
|
extra newline to be interpreted as part of the token. This bug
|
|
could only be triggered in qdf mode, which is a mode intended for
|
|
manual inspection of PDF files' contents, so it is very unlikely
|
|
to have caused any actual problems for people using qpdf for
|
|
production use. Even if it did, it would be very unusual for a PDF
|
|
file to actually be adversely affected by this issue.
|
|
|
|
* Add support for coalescing a page's contents into a single
|
|
stream if they are represented as an array of streams. This can be
|
|
performed from the command line using the --coalesce-contents
|
|
option. Coalescing content streams can simplify things for
|
|
software that wants to operate on a page's content streams without
|
|
having to handle weird edge cases like content streams split in
|
|
the middle of tokens. Note that
|
|
QPDFObjectHandle::parsePageContents and
|
|
QPDFObjectHandle::parseContentStream already handled split content
|
|
streams. This is mainly to set the stage for new methods of
|
|
operating on page contents. The new method
|
|
QPDFObjectHandle::pipeContentStreams will pipe all of a page's
|
|
content streams though a single pipeline. The new method
|
|
QPDFObjectHandle.coalesceContentStreams, when called on a page
|
|
object, will do nothing if the page's contents are a single
|
|
stream, but if they are an array of streams, it will replace the
|
|
page's contents with a single stream whose contents are the
|
|
concatenation of the original streams.
|
|
|
|
* A few library routines throw exceptions if called on non-page
|
|
objects. These constraints have been relaxed somewhat to make qpdf
|
|
more tolerant of files whose page dictionaries are not properly
|
|
marked as such. Mostly exceptions about page operations being
|
|
called on non page objects will only be thrown in cases where the
|
|
operation had no chance of succeeding anyway. This change has no
|
|
impact on any default mode operations, but it could allow
|
|
applications that use page-level APIs in QPDFObjectHandle to be
|
|
more tolerant of certain types of damaged files.
|
|
|
|
* Add QPDFObjectHandle::TokenFilter class and methods to use it to
|
|
perform lexical filtering on content streams. You can call
|
|
QPDFObjectHandle::addTokenFilter on stream object, or you can call
|
|
the higher level QPDFObjectHandle::addContentTokenFilter on a page
|
|
object to cause the stream's contents to passed through a token
|
|
filter while being retrieved by QPDFWriter or any other consumer.
|
|
For details on using TokenFilter, please see comments in
|
|
QPDFObjectHandle.hh.
|
|
|
|
* Enhance the string, type QPDFTokenizer::Token constructor to
|
|
initialize a raw value in addition to a value. Tokens have a
|
|
value, which is a canonical representation, and a raw value. For
|
|
all tokens except strings and names, the raw value and the value
|
|
are the same. For strings, the value excludes the outer delimiters
|
|
and has non-printing characters normalized. For names, the value
|
|
resolves non-printing characters. In order to better facilitate
|
|
token filters that mostly preserve contents and to enable
|
|
developers to be mostly unconcerned about the nuances of token
|
|
values and raw values, creating string and name tokens now
|
|
properly handles this subtlety of values and raw values. When
|
|
constructing string tokens, take care to avoid passing in the
|
|
outer delimiters. This has always been the case, but it is now
|
|
clarified in comments in QPDFObjectHandle.hh::TokenFilter. This
|
|
has no impact on any existing code unless there's some code
|
|
somewhere that was relying on Token::getRawValue() returning an
|
|
empty string for a manually constructed token. The token class's
|
|
operator== method still only looks at type and value, not raw
|
|
value. For example, string tokens for <41> and (A) would still be
|
|
equal because both are representations of the string "A".
|
|
|
|
* Add QPDFObjectHandle::isDataModified method. This method just
|
|
returns true if addTokenFilter has been called on the stream. It
|
|
enables a caller to determine whether it is safe to optimize away
|
|
piping of stream data in cases where the input and output are
|
|
expected to be the same. QPDFWriter uses this internally to skip
|
|
the optimization of not re-compressing already compressed streams
|
|
if addTokenFilter has been called. Most developers will not have
|
|
to worry about this as it is used internally in the library in the
|
|
places that need it. If you are manually retrieving stream data
|
|
with QPDFObjectHandle::getStreamData or
|
|
QPDFObjectHandle::pipeStreamData, you don't need to worry about
|
|
this at all.
|
|
|
|
* Provide heavily annotated examples/pdf-filter-tokens.cc example
|
|
that illustrates use of some simple token filters.
|
|
|
|
* When normalizing content streams, as in qdf mode, issue warning
|
|
about bad tokens. Content streams are only normalized when this is
|
|
explicitly requested, so this has no impact on normal operation.
|
|
However, in qdf mode, if qpdf detects a bad token, it means that
|
|
either there's a bug in qpdf's lexer, that the file is damaged, or
|
|
that the page's contents are split in a weird way. In any of those
|
|
cases, qpdf could potentially damage the stream's contents by
|
|
replacing carriage returns with newlines or otherwise messing with
|
|
spaces. The mostly likely case of this would be an inline image's
|
|
compressed data being divided across two streams and having the
|
|
compressed data in the second stream contain a carriage return as
|
|
part of its binary data. If you are using qdf mode just to look at
|
|
PDF files in text editors, this usually doesn't matter. In cases
|
|
of contents split across multiple streams, coalescing streams
|
|
would eliminate the problem, so the warning mentions this. Prior
|
|
to this enhancement, the chances of qdf mode writing incorrect
|
|
data were already very low. This change should make it nearly
|
|
impossible for qdf mode to unknowingly write invalid data.
|
|
|
|
2018-02-04 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFWriter::setLinearizationPass1Filename method and
|
|
--linearize-pass1 command line option to allow specification of a
|
|
file into which QPDFWriter will write its intermediate
|
|
linearization pass 1 file. This is useful only for debugging qpdf.
|
|
qpdf creates linearized files by computing the output in two
|
|
passes. Ordinarily the first pass is discarded and not written
|
|
anywhere. This option allows it to be inspected.
|
|
|
|
2018-02-04 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 7.1.1: release
|
|
|
|
* Bug fix: properly linearize files whose /ID has a length of
|
|
other than 16 bytes.
|
|
|
|
* Rename some test files to avoid files with three dots in their
|
|
names. Fixes #173.
|
|
|
|
* Fix various build and compilation issues on some platforms and
|
|
compilers. Fixes #176, #172, #177
|
|
|
|
* Fix a few typos and clarify a few comments in header files.
|
|
|
|
2018-01-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 7.1.0: release
|
|
|
|
* Allow raw encryption key to be specified in library and command
|
|
line with the QPDF::setPasswordIsHexKey method and
|
|
--password-is-hex-key option. Allow encryption key to be displayed
|
|
with --show-encryption-key option. Thanks to Didier Stevens
|
|
<didier.stevens@gmail.com> for the idea and contribution of one
|
|
implementation of this idea. See his blog post at
|
|
https://blog.didierstevens.com/2017/12/28/cracking-encrypted-pdfs-part-3/
|
|
for a discussion of using this for cracking encrypted PDFs. I hope
|
|
that a future release of qpdf will include some additional
|
|
recovery options that may also make use of this capability.
|
|
|
|
2018-01-13 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix lexical error: the PDF specification allows floating point
|
|
numbers to end with ".". Fixes #165.
|
|
|
|
* Fix link order in the build to avoid conflicts when building
|
|
from source while an older version of qpdf is installed. Fixes #158.
|
|
|
|
* Add support for TIFF predictor for LZW and Flate streams. Now
|
|
all predictor functions are supported. Fixes #171.
|
|
|
|
2017-12-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Clarify documentation around options that control parsing but
|
|
not output creation. Two options: --suppress-recovery and
|
|
--ignore-xref-streams, were documented in the "Advanced
|
|
Transformation Options" section of the manual and --help output
|
|
even though they are not related to output. These are now
|
|
described in a separate section called "Advanced Parsing Options."
|
|
|
|
* Implement remaining PNG filters for decode. Prior versions could
|
|
decode only the "up" filter. Now all PNG filters (sub, up,
|
|
average, Paeth, optimal) are supported for decoding. Thanks to
|
|
Tobias Hoffmann for providing a test PDF file that has images with
|
|
all PNG filters along with different numbers of bits per sample
|
|
and samples per pixel, and thanks to Casey Rojas for providing
|
|
implementations of the remaining PNG filters.
|
|
|
|
The implementation of the remaining PNG filters changed the
|
|
interface to the private Pl_PNGFilter class, but this class's
|
|
header file is not in the installation, and there is no public
|
|
interface to the class. Within the library, the class is never
|
|
allocated on the stack; it is only ever dynamically allocated. As
|
|
such, this does not actually break binary compatibility of the
|
|
library.
|
|
|
|
2017-09-15 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 7.0.0: release
|
|
|
|
2017-09-12 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Relicense qpdf under version 2.0 of the Apache License rather
|
|
than version 2.0 of the Artistic License. Both are fine, but the
|
|
Apache License is in more widespread use, and I like it a little
|
|
better than Artistic-2.0. It is my intention that there be no
|
|
change in what you can or can't do with qpdf. Versions of qpdf
|
|
prior to version 7 were released under the terms of version 2.0 of
|
|
the Artistic License. At your option, you may continue to consider
|
|
qpdf to be licensed under those terms. Please see the manual for
|
|
additional information.
|
|
|
|
* Improve the error message that is issued when QPDFWriter
|
|
encounters a stream that can't be decoded. In particular, mention
|
|
that the stream will be copied without filtering to avoid data
|
|
loss.
|
|
|
|
* Add new methods to the C API to correspond to new additions to
|
|
QPDFWriter:
|
|
- qpdf_set_compress_streams
|
|
- qpdf_set_decode_level
|
|
- qpdf_set_preserve_unreferenced_objects
|
|
- qpdf_set_newline_before_endstream
|
|
|
|
2017-08-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Re-implement parser iteratively to avoid stack overflow on very
|
|
deeply nested arrays and dictionaries. Fixes #146.
|
|
|
|
* Detect infinite loop while finding additional xref tables. Fixes
|
|
#149.
|
|
|
|
2017-08-22 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 7.0.b1: release
|
|
|
|
* Convert all README files to markdown. Names changed as follows:
|
|
- README --> README.md
|
|
- README.hardening --> README-hardening.md
|
|
- README.maintainer --> README-maintainer.md
|
|
- README-what-to-download.txt --> README-what-to-download.md
|
|
- README-windows.txt --> README-windows.md
|
|
The file README-windows-install.txt remains a text file.
|
|
|
|
2017-08-21 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add support for writing PCLm files. Most of the work was done by
|
|
Sahil Arora <sahilarora.535@gmail.com> as part of a Google Summer
|
|
of Code project in 2017. PCLm support is useful only for clients
|
|
that specifically know how to create PCLm files. Support in qpdf
|
|
is just for ensuring that objects are written in the correct order
|
|
and for including some additional material in the output that is
|
|
required by the PCLm standard.
|
|
|
|
2017-08-19 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Remove --precheck-streams. This is enabled by default now
|
|
without any efficiency cost. This feature was never released.
|
|
|
|
* Update pdf-create example to illustrate use of additional image
|
|
compression filters.
|
|
|
|
* Add support for /RunLengthDecode and /DCTDecode:
|
|
- New pipeline types Pl_RunLength and Pl_DCT
|
|
- New command-line flags --compress-streams and --decode-level
|
|
to replace/enhance --stream-data
|
|
- New QPDFWriter::setCompressStreams and
|
|
QPDFWriter::setDecodeLevel methods
|
|
Please see documentation, header files, and help messages for
|
|
details on these new features.
|
|
|
|
2017-08-12 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFObjectHandle::rotatePage to apply rotation to a page
|
|
object. Add --rotate option to qpdf to specify page rotation from
|
|
the command line.
|
|
|
|
* Provide --verbose option that causes qpdf to print an indication
|
|
of what files it is writing.
|
|
|
|
* Change --single-pages to --split-pages and make it take an
|
|
optional argument specifying the number of pages per file.
|
|
|
|
2017-08-11 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix --newline-before-endstream to always add a newline before
|
|
endstream even if the last character was already a newline. This
|
|
is actually what's required by PDF/A. Fixes #133.
|
|
|
|
* Handle encrypted files whose encryption parameters are too
|
|
short. Fixes #96.
|
|
|
|
2017-08-10 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Remove dependency on libpcre.
|
|
|
|
* Be more forgiving of certain types of errors in the xref table
|
|
that don't interfere with interpreting the table.
|
|
|
|
* Remove unused "tracing" parameter from PointerHolder's
|
|
(T*, bool) constructor. This change breaks source code
|
|
compatibility, but since this argument to PointerHolder has not
|
|
used for a long time and the presence of a boolean parameter in
|
|
the primary constructor makes it too easy to use that by mistake
|
|
when trying to use PointerHolder for arrays, it seems like it's
|
|
finally time to take it out. If you have a compile error because
|
|
of this change, please check to see whether you intended to use
|
|
the (bool, T*) version of the constructor instead. If not, just
|
|
remove the second parameter.
|
|
|
|
2017-08-09 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* When recovering stream length, find endobj without endstream as
|
|
well as just looking for endstream. Be a little more lax about
|
|
where we allow it to be found.
|
|
|
|
2017-08-05 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add --single-pages option to cause output to be written to a
|
|
separate file for each page rather than one big file.
|
|
|
|
* Process --pages options earlier so that certain inspection
|
|
options, like --show-pages, can show the state after the merging
|
|
operations.
|
|
|
|
2017-08-02 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix off-by-one error in parsing pages options. Fixes #129.
|
|
|
|
2017-07-29 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Support @filename and @- in the qpdf command-line tool to read
|
|
command-line arguments, one per line, from the named file. @-
|
|
reads from standard input. Fixes #16.
|
|
|
|
* Detect when input file and output file are the same and exit to
|
|
avoid overwriting and losing input file. Fixes #29.
|
|
|
|
* When passing multiple inspection arguments, run --check first,
|
|
and defer exit until after all the checks have been run. This
|
|
makes it possible to force operations such as --show-xref to be
|
|
delayed until after recovery attempts have been made. For example,
|
|
if you have a file with a syntactically valid xref table that has
|
|
some offsets that are incorrect, running qpdf --check --show-xref
|
|
on that file will first recover the xref and the dump the
|
|
recovered xref, while just running qpdf --show-xref will show the
|
|
xref table as present in the file. Fixes #42.
|
|
|
|
* When recovering stream length, indicate the recovered length.
|
|
Fixes #44.
|
|
|
|
* Add --newline-before-endstream command-line option and
|
|
setNewlineBeforeEndstream method to QPDFWriter. This forces qpdf
|
|
to always add a newline before the endstream keyword. It is a
|
|
necessary but not sufficient condition for PDF/A compliance. Fixes
|
|
#103.
|
|
|
|
* Handle zlib data errors when decoding streams. Fixes #106.
|
|
|
|
* Improve handling of files where the "stream" keyword is not
|
|
followed by proper line terminators. Fixes #104.
|
|
|
|
* Fix content stream parsing to handle cases of structures within
|
|
the stream split across stream boundaries. Fixes #73.
|
|
|
|
2017-07-28 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add --preserve-unreferenced command-line option and
|
|
setPreserveUnreferencedObjects method to QPDFWriter. This option
|
|
causes QPDFWriter to write all objects from the input file to the
|
|
output file regardless of whether the objects are referenced.
|
|
Objects are written to the output file in numerical order from the
|
|
input file. This option has no effect for linearized files.
|
|
|
|
2017-07-27 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add --precheck-streams command-line option and setStreamPrecheck
|
|
method to QPDFWriter to tell QPDFWriter to attempt decoding a
|
|
stream fully before deciding whether to filter it or not.
|
|
|
|
* Recover gracefully from streams that aren't filterable because
|
|
the filter parameters are invalid in the stream dictionary or the
|
|
dictionary itself is invalid.
|
|
|
|
* Significantly improve recoverability from invalid qpdf objects.
|
|
Most conditions in basic object parsing that used to cause qpdf to
|
|
exit are now warnings. There are still many more opportunities for
|
|
improvements of this sort beyond just object parsing.
|
|
|
|
2017-07-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fixes to infinite loops below also fix problems reported in
|
|
other issues and cover CVE-2017-11624, CVE-2017-11625,
|
|
CVE-2017-11626, and CVE-2017-11627.
|
|
|
|
* Don't attempt to interpret syntactic keywords (like R and
|
|
endobj) found while parsing content streams.
|
|
|
|
* Detect infinite loops while resolving objects. This could happen
|
|
if something inside an object that had to be resolved during
|
|
parsing, such as a stream length, recursively referenced the
|
|
object being resolved.
|
|
|
|
* CVE-2017-9208: Handle references to and appearance of object 0
|
|
as a special case. Object 0 is not allowed, and qpdf was using it
|
|
internally to represent direct objects.
|
|
|
|
* CVE-2017-9209: Fix infinite loop caused by attempting to
|
|
reconstruct the xref table while already in the process of
|
|
reconstructing the xref table.
|
|
|
|
* CVE-2017-9210: Fix infinite loop caused by attempting to unparse
|
|
an object for inclusion in the text of an exception.
|
|
|
|
2015-11-10 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 6.0.0: release
|
|
|
|
* No changes from 5.2.0. The 5.2.0 release broke binary
|
|
compatibility and was withdrawn.
|
|
|
|
2015-10-31 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 5.2.0: release
|
|
|
|
* libqpdf/QPDF.cc (read_xrefTable): Be tolerant of some malformed
|
|
xref tables that don't have the required trailing space after each
|
|
line.
|
|
|
|
2015-10-29 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Implement QPDFWriter::setDeterministicID and --deterministic-id
|
|
commandline-flag to qpdf to request generation of a deterministic
|
|
/ID for non-encrypted files.
|
|
|
|
2015-05-24 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 5.1.3: release
|
|
|
|
* Bug fix: fix-qdf was not handling object streams with more than
|
|
255 objects in them.
|
|
|
|
* Handle Microsoft crypt provider initialization properly for case
|
|
where no keys have been previously created, such as in a fresh
|
|
Windows installation.
|
|
|
|
* Include time.h in QUtil.hh for time_t
|
|
|
|
2015-02-21 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Detect loops in Pages structure. Thanks to Gynvael Coldwind and
|
|
Mateusz Jurczyk of the Google Security Team for providing a sample
|
|
file with this problem.
|
|
|
|
* Prevent buffer overrun when converting a password to an
|
|
encryption key. Thanks to Gynvael Coldwind and Mateusz Jurczyk of
|
|
the Google Security Team for providing a sample file with this
|
|
problem.
|
|
|
|
* Ensure that arguments to "R" when parsing the file are direct
|
|
objects before trying to resolve them. This prevents specially
|
|
crafted files from causing qpdf to crash with a stack overflow.
|
|
Thanks to Gynvael Coldwind and Mateusz Jurczyk of the Google
|
|
Security Team for providing a sample file with this problem.
|
|
|
|
2014-12-01 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Some broken PDF files lack the required /Type key for /Page and
|
|
/Pages nodes in the page dictionary. QPDF now uses other methods
|
|
to figure out what kind of node it is looking at so that it can
|
|
handle those files. Original reported at
|
|
https://bugs.launchpad.net/ubuntu/+source/qpdf/+bug/1397413
|
|
|
|
2014-11-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Bug fix: QPDFObjectHandle::getPageContents() no longer throws an
|
|
exception when called on a page that has no /Contents key in its
|
|
dictionary. This is allowed by the spec, and some software
|
|
packages generate files like this for pages that are blank in the
|
|
original.
|
|
|
|
2014-06-07 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 5.1.2: release
|
|
|
|
* MS Visual C++ build: explicitly target Windows 5.0.1 (XP)
|
|
|
|
* New example program: pdf-split-pages: efficiently split PDF
|
|
files into individual pages.
|
|
|
|
* Bug fix: don't fail on files that contain streams where /Filter
|
|
or /DecodeParms references a stream. Before, qpdf would try to
|
|
convert these to direct objects, which would fail because of the
|
|
stream.
|
|
|
|
2014-02-22 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Bug fix: if the last object in the first part of a linearized
|
|
file had an offset that was below 65536 by less than the size of
|
|
the hint stream, the xref stream was invalid and the resulting file
|
|
is not usable. This is now fixed.
|
|
|
|
2014-01-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 5.1.1: release
|
|
|
|
2013-12-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Bug fix: when copying foreign objects (which occurs during page
|
|
splitting among other cases), avoid traversing the same object
|
|
more than once if it appears more than once in the same direct
|
|
object. This bug is performance-only and does not affect the
|
|
actual output.
|
|
|
|
2013-12-17 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 5.1.0: release
|
|
|
|
2013-12-16 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Document and make explicit that passing null to
|
|
QUtil::setRandomDataProvider() resets the random data provider.
|
|
|
|
* Provide QUtil::getRandomDataProvider().
|
|
|
|
2013-12-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Allow any space rather than just newline to follow xref header.
|
|
This allows qpdf to read a wider range of damaged files.
|
|
|
|
2013-11-30 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Allow user-supplied random data provider to be used in place of
|
|
OS-provided or insecure random number generation. See
|
|
documentation for 5.1.0 for details.
|
|
|
|
* Add configure option --enable-os-secure-random (enabled by
|
|
default). Pass --disable-os-secure-random or define
|
|
SKIP_OS_SECURE_RANDOM to avoid attempts to use the operating
|
|
system-provided secure random number generation. This can be
|
|
especially useful on Windows if you wish to avoid any dependency
|
|
on Microsoft's cryptography system.
|
|
|
|
2013-11-29 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* If NO_GET_ENVIRONMENT is #defined, for Windows only,
|
|
QUtil::get_env will always return false. This was added to
|
|
support a user who needs to avoid calling GetEnvironmentVariable
|
|
from the Windows API. QUtil::get_env is not used for any
|
|
functionality in qpdf and exists only to support the test suite
|
|
including test coverage support with QTC (part of qtest).
|
|
|
|
* Add /FS to msvc builds to allow parallel builds to work with
|
|
Visual C++ 2013.
|
|
|
|
* Add missing #include <algorithm> in some files that use std::min
|
|
and std::max.
|
|
|
|
2013-11-21 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Change image comparison tests, which are disabled by default, to
|
|
use tiff files with 8 bits per sample rather than 4. This works
|
|
around a bug in tiffcmp but also increases time and disk space for
|
|
image comparison tests.
|
|
|
|
2013-10-28 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix MacOS compilation errors by adding a missing #include
|
|
<string> in a header file.
|
|
|
|
2013-10-18 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 5.0.1: release
|
|
|
|
* Warn when -accessibility=n is specified with a modern encryption
|
|
format (R > 3). Also, accept this flag (and ignore with warning)
|
|
with 256-bit encryption. qpdf has always ignored the
|
|
accessibility setting with R > 3, but it previously did so
|
|
silently.
|
|
|
|
2013-10-05 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Replace operator[] in std::string and std::vector with "at" in
|
|
order to get bounds checking. This reduces the chances that
|
|
incorrect code will result in data exposure or buffer overruns.
|
|
See README.hardening for additional notes.
|
|
|
|
* Use cryptographically secure random number generation when
|
|
available. See additional notes in README.
|
|
|
|
* Replace some assert() calls with std::logic_error exceptions.
|
|
Ideally there shouldn't be assert() calls outside of testing.
|
|
This change may make a few more potential code errors in handling
|
|
invalid data recoverable.
|
|
|
|
* Security fix: In places where std::vector<T>(size_t) was used,
|
|
either validate that the size parameter is sane or refactor code
|
|
to avoid the need to pre-allocate the vector. This reduces the
|
|
likelihood of allocating a lot of memory in response to invalid
|
|
data in linearization hint streams.
|
|
|
|
* Security fix: sanitize /W array in cross reference stream to
|
|
avoid a potential integer overflow in a multiplication. It is
|
|
unlikely that any exploits were possible from this bug as
|
|
additional checks were also performed.
|
|
|
|
* Security fix: avoid buffer overrun that could be caused by bogus
|
|
data in linearization hint streams. The incorrect code could only
|
|
be triggered when checking linearization data, which must be
|
|
invoked explicitly. qpdf does not check linearization data when
|
|
reading or writing linearized files, but the qpdf --check command
|
|
does check linearization data.
|
|
|
|
* Security fix: properly handle empty strings in
|
|
QPDF_Name::normalizeName. The empty string is not a valid name
|
|
and would never be parsed as a name, so there were no known
|
|
conditions where this method could be called with an empty string.
|
|
|
|
* Security fix: perform additional argument sanity checks when
|
|
reading bit streams.
|
|
|
|
* Security fix: in QUtil::toUTF8, change bounds checking to avoid
|
|
having a pointer point temporarily outside the bounds of an
|
|
array. Some compiler optimizations could have made the original
|
|
code unsafe.
|
|
|
|
2013-07-10 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 5.0.0: release
|
|
|
|
* 4.2.0 turned out to be binary incompatible on some platforms
|
|
even though there were no changes to the public API. Therefore
|
|
the 4.2.0 release has been withdrawn, and is being replaced with a
|
|
5.0.0 release that acknowledges the ABI change and also removes
|
|
some problematic methods from the public API.
|
|
|
|
* Remove methods from public API that were only intended to be
|
|
used by QPDFWriter and really didn't make sense to call from
|
|
anywhere else as they required internal knowledge that only
|
|
QPDFWriter had:
|
|
- QPDF::getLinearizedParts
|
|
- QPDF::generateHintStream
|
|
- QPDF::getObjectStreamData
|
|
- QPDF::getCompressibleObjGens
|
|
- QPDF::getCompressibleObjects
|
|
|
|
2013-07-07 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 4.2.0: release [withdrawn]
|
|
|
|
* Ignore error case of a stream's decode parameters having invalid
|
|
length when there are no stream filters.
|
|
|
|
* qpdf: add --show-npages command-line option, which causes the
|
|
number of pages in the input file to be printed on a line by
|
|
itself.
|
|
|
|
* qpdf: allow omission of range in --pages. If range is omitted
|
|
such that an argument that is supposed to be a range is an invalid
|
|
range and a valid file name, the range of 1-z is assumed. This
|
|
makes it possible to merge a bunch of files with something like
|
|
qpdf --empty out.pdf --pages *.pdf --
|
|
|
|
2013-06-15 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Handle some additional broken files with missing /ID in trailer
|
|
for encrypted files and with space rather than newline after xref.
|
|
|
|
2013-06-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Detect and correct /Outlines dictionary being a direct object
|
|
when linearizing files. This is not allowed by the spec but has
|
|
been seen in the wild. Prior to this change, such a file would
|
|
cause an internal error in the linearization code, which assumed
|
|
/Outlines was indirect.
|
|
|
|
* Add /Length key to crypt filter dictionary for encrypted files.
|
|
This key is optional, but some version of MacOS reportedly fail to
|
|
open encrypted PDF files without this key.
|
|
|
|
* Bug fix: properly handle object stream generation when the
|
|
original file has some compressible objects with generation != 0.
|
|
|
|
* Add QPDF::getCompressibleObjGens() and deprecate
|
|
QPDF::getCompressibleObjects(), which had a flaw in its logic.
|
|
|
|
* Add new QPDFObjectHandle::getObjGen() method and indicate in
|
|
comments that its use is favored over getObjectID() and
|
|
getGeneration() for most cases.
|
|
|
|
* Add new QPDFObjGen object to represent an object ID/generation
|
|
pair.
|
|
|
|
2013-04-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 4.1.0: release
|
|
|
|
2013-03-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* manual/qpdf-manual.xml: Document the casting policy that is
|
|
followed in qpdf's implementation.
|
|
|
|
2013-03-11 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* When creating Windows binary distributions, make sure to only
|
|
copy DLLs of the correct type. The ensures that the 32-bit
|
|
distributions contain 32-bit DLLs and the 64-bit distributions
|
|
contain 64-bit DLLs.
|
|
|
|
2013-03-07 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Use ./install-sh (already present) instead of "install -c" to
|
|
install executables to fix portability problems against different
|
|
UNIX variants.
|
|
|
|
2013-03-03 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add protected terminateParsing method to
|
|
QPDFObjectHandle::ParserCallbacks that implementor can call to
|
|
terminate parsing of a content stream.
|
|
|
|
2013-02-28 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Favor fopen_s and strerror_s on MSVC to avoid CRT security
|
|
warnings. This is useful for people who may want to use qpdf in
|
|
an application that is Windows 8 certified.
|
|
|
|
* New method QUtil::safe_fopen to wrap calls to fopen. This is
|
|
less cumbersome than calling QUtil::fopen_wrapper.
|
|
|
|
* Remove all calls to sprintf
|
|
|
|
* New method QUtil::int_to_string_base to convert to octal or
|
|
hexadecimal (or decimal) strings without using sprintf
|
|
|
|
2013-02-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Rewrite QUtil::int_to_string and QUtil::double_to_string to
|
|
remove internal length limits but to remain backward compatible
|
|
with the old versions for valid inputs.
|
|
|
|
2013-02-23 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Bug fix: properly handle overridden compressed objects. When
|
|
caching objects from an object stream, only cache objects that,
|
|
based on the xref table, would actually be resolved into this
|
|
stream. Prior to this fix, if an object stream A contained an
|
|
object B that was overridden by an appended section of the file,
|
|
qpdf would cache the old value of B if any non-overridden member
|
|
of A was accessed before B. This commit fixes that bug.
|
|
|
|
2013-01-31 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Do not remove libtool's .la file during the make install step.
|
|
Note to packagers: if your distribution wants to you remove the
|
|
.la file, you will have to do that yourself now.
|
|
|
|
2013-01-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* New method QUtil::hex_encode to encode binary data as a
|
|
hexadecimal string
|
|
|
|
* qpdf --check was exiting with status 0 in some rare cases even
|
|
when errors were found. It now always exits with one of the
|
|
document error codes (0 for success, 2 for errors, 3 or warnings).
|
|
|
|
2013-01-24 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Make --enable-werror work for MSVC, and generally handle warning
|
|
options better for that compiler. Warning flags for that compiler
|
|
were previous hard-coded into the build with /WX enabled
|
|
unconditionally.
|
|
|
|
* Split warning flags into WFLAGS in autoconf.mk to make them
|
|
easier to override. Before they were repeated in CFLAGS and
|
|
CXXFLAGS and were commingled with other compiler flags.
|
|
|
|
* qpdf --check now does syntactic checks all pages' content
|
|
streams as well as checking overall document structure. Semantic
|
|
errors are still not checked, and there are no plans to add
|
|
semantic checks.
|
|
|
|
2013-01-22 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFObjectHandle::getTypeCode(). This method returns a
|
|
unique integer (enumerated type) value corresponding to the object
|
|
type of the QPDFObjectHandle. It can be used as an alternative to
|
|
the QPDFObjectHandle::is* methods for type testing, particularly
|
|
where there is a desire to use a switch statement or optimize for
|
|
performance when testing object types.
|
|
|
|
* Add QPDFObjectHandle::getTypeName(). This method returns a
|
|
string literal describing the object type. It is useful for
|
|
testing and debugging.
|
|
|
|
2013-01-20 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFObjectHandle::parseContentStream, which parses the
|
|
objects in a content stream and calls handlers in a callback
|
|
class. The example pdf-parse-content illustrates it use.
|
|
|
|
* Add QPDF_Operator and QPDF_InlineImage types along with
|
|
appropriate wrapper methods in QPDFObjectHandle. These new object
|
|
types are to facilitate content stream parsing.
|
|
|
|
2013-01-17 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 4.0.1: release
|
|
|
|
* Add clarifying comment in QPDF.hh for methods that return the
|
|
user password to state that it is no longer possible with newer
|
|
encryption formats to recover the user password knowing the owner
|
|
password.
|
|
|
|
* Fix detection of binary attachments in the test suite. This
|
|
resolves false test failures on some platforms. No changes to the
|
|
actual QPDF code were made.
|
|
|
|
2012-12-31 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 4.0.0: release
|
|
|
|
* Add new methods qpdf_get_pdf_extension_level,
|
|
qpdf_set_r5_encryption_parameters,
|
|
qpdf_set_r6_encryption_parameters,
|
|
qpdf_set_minimum_pdf_version_and_extension, and
|
|
qpdf_force_pdf_version_and_extension to support new functionality
|
|
from the C API.
|
|
|
|
2012-12-30 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix long-standing bug that could theoretically have resulted in
|
|
possible misinterpretation of decode parameters in streams. As
|
|
far as I can tell, it is extremely unlikely that files with the
|
|
characteristics that would have triggered the bug actually exist
|
|
in cases that qpdf versions prior to 4.0.0 could have read.
|
|
Unencrypted files with encrypted attachments would have triggered
|
|
this bug, but qpdf versions prior to 4.0.0 already refused to open
|
|
such files.
|
|
|
|
* Fix long-standing bug in which a stream that used a crypt
|
|
filter and was otherwise not filterable by qpdf would be decrypted
|
|
properly but would retain the crypt filter indication in the
|
|
file. There are no known ways to create files like this, so it is
|
|
unlikely that anyone ever hit this bug.
|
|
|
|
2012-12-29 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add read/write support for both the deprecated Acrobat IX
|
|
encryption format and the Acrobat X/PDF 2.0 encryption format
|
|
using 256-bit AES keys. Using the Acrobat IX format (R=5) forces
|
|
the version of the file to 1.7 with extension level 3. Using the
|
|
PDF 2.0 format (R=6) forces it to 1.7 extension level 8.
|
|
|
|
* Add new method QPDF::getEncryptionKey to return the actual
|
|
encryption key used for encryption of data in the file. The key
|
|
is returned as a std::string.
|
|
|
|
* Non-compatible API change: change signature of
|
|
QPDF::compute_data_key to take the R and V values from the
|
|
encryption dictionary. There is no reason for any application
|
|
code to call this method since handling of encryption is done
|
|
automatically by the qpdf library. It is used internally by
|
|
QPDFWriter.
|
|
|
|
* Support reading and decryption of files whose main text is not
|
|
encrypted but whose attachments are. More generally, support the
|
|
case of files and streams encrypted differently with some
|
|
limitations, described in the documentation. This was not
|
|
previously supported due to lack of test files, but I created test
|
|
files using a trial version of Acrobat XI to fully implement this
|
|
case.
|
|
|
|
* Incorporate sha2 code from sphlib 3.0. See README for
|
|
licensing. Create private pipeline class for computing hashes
|
|
with sha256, sha384, and sha512.
|
|
|
|
* Allow specification of initialization vector when using AES
|
|
filtering. This is required to compute the hash used in /R=6 (PDF
|
|
2.0) encryption.
|
|
|
|
2012-12-28 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add random number generation functions to QUtil.
|
|
|
|
* Fix old bug that could cause an infinite loop if user password
|
|
recovery methods were called and a password contained the "("
|
|
character (which happens to be the first byte of padding used by
|
|
older PDF encryption formats). This bug was noticed while reading
|
|
code and would not happen under ordinary usage patterns even if
|
|
the password contained that character.
|
|
|
|
2012-12-27 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add awareness of extension level to PDF Version methods for both
|
|
reading and writing. This includes adding method
|
|
QPDF::getExtensionLevel and new versions of
|
|
QPDFWriter::setMinimumPDFVersion and QPDFWriter::forcePDFVersion
|
|
that support extension levels. The qpdf command-line tool
|
|
interprets version numbers of the form x.y.z as version x.y at
|
|
extension level z.
|
|
|
|
* Update AES classes to support use of 256-bit keys.
|
|
|
|
* Non-compatible API change: Removed public method
|
|
QPDF::flattenScalarReferences. Instead, just flatten the scalar
|
|
references we actually need to flatten. Flattening scalar
|
|
references was a wrong decision years ago and has occasionally
|
|
caused other problems, among which were that it caused qpdf to
|
|
visit otherwise unreferenced and possibly erroneous objects in the
|
|
file when it didn't have to. There's no reason that any
|
|
non-internal code would have had to call this.
|
|
|
|
* Non-compatible API change: Removed public method
|
|
QPDF::decodeStreams which was previously used by qpdf --check but
|
|
is no longer used. The decodeStreams method could generate false
|
|
positives since it would attempt to access all objects in the file
|
|
including those that were not referenced. There's no reason that
|
|
any non-internal code would have had to call this.
|
|
|
|
* Non-compatible API change: Removed public method
|
|
QPDF::trimTrailerForWrite, which was only intended for use by
|
|
QPDFWriter and which is no longer used.
|
|
|
|
2012-12-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add new fields to QPDF::EncryptionData to support newer
|
|
encryption formats (V=5, R=5 and R=6)
|
|
|
|
* Non-compatible API change: Change public nested class
|
|
QPDF::EncryptionData to make all member fields private and to add
|
|
method calls. This is a non-compatible API change, but changing
|
|
EncryptionData is necessary to support newer encryption formats,
|
|
and making this change will prevent the need from making a
|
|
non-compatible change in the future if new fields are added. A
|
|
public nested class should never have had public members to begin
|
|
with.
|
|
|
|
2012-12-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Allow PDF header to appear anywhere in the first 1024 bytes of
|
|
the file as recommended in the implementation notes of the Adobe
|
|
version of the PDF spec.
|
|
|
|
2012-11-20 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add zlib and libpcre to Requires.private in the pkg-config file
|
|
to support static linking. Thanks Tobias Hoffmann for pointing
|
|
out the omission.
|
|
|
|
* Ignore (with warning) non-freed objects in the xref table whose
|
|
offset is 0. Some PDF producers (incorrectly) do this. See
|
|
https://bugs.linuxfoundation.org/show_bug.cgi?id=1081.
|
|
|
|
2012-09-23 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add public methods QPDF::processInputSource and
|
|
QPDFWriter::setOutputPipeline to allow users to read from custom
|
|
input sources and to write to custom pipelines. This allows the
|
|
maximum flexibility in sources for reading and writing PDF files.
|
|
|
|
2012-09-06 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 3.0.2: release
|
|
|
|
* Add new method QPDFWriter::setExtraHeaderText to add extra text,
|
|
such as application-specific comments, to near the beginning of a
|
|
PDF file. For linearized files, this appears after the
|
|
linearization parameter dictionary. For non-linearized files, it
|
|
appears right after the PDF header and non-ASCII comment.
|
|
|
|
* Make it possible to write the same QPDF object with two
|
|
different QPDFWriter objects that have both called
|
|
setLinearization(true) by making private method
|
|
QPDF::calculateLinearizationData() properly initialize its state.
|
|
|
|
* Bug fix: Writing after calling QPDFWriter::setOutputMemory()
|
|
would cause a segmentation fault because of an internal field not
|
|
being initialized, rendering that method useless. This has been
|
|
corrected.
|
|
|
|
2012-08-11 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 3.0.1: release
|
|
|
|
* Bug fix: let EOF terminate a literal token as well as
|
|
whitespace or comments.
|
|
|
|
2012-07-31 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 3.0.0: release
|
|
|
|
2012-07-29 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 3.0.rc1: release
|
|
|
|
2012-07-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* From Tobias: add QPDFObjectHandle::replaceStreamData that takes
|
|
a std::string analogous to the QPDFObjectHandle::newStream that
|
|
takes a string that was added earlier.
|
|
|
|
2012-07-21 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Change configure to have image comparison tests disabled by
|
|
default. Update README and README.maintainer with information
|
|
about running them.
|
|
|
|
* Add --pages command-line option to qpdf to enable page-based
|
|
merging and splitting.
|
|
|
|
* Add new method QPDFObjectHandle::replaceDict to replace a
|
|
stream's dictionary. Use with caution; see comments in
|
|
QPDFObjectHandle.hh.
|
|
|
|
* Add new method QPDFObjectHandle::parse for creation of
|
|
QPDFObjectHandle objects from string representations of the
|
|
objects. Thanks to Tobias Hoffmann for the idea.
|
|
|
|
2012-07-15 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* add new QPDF::isEncrypted method that returns some additional
|
|
information beyond other versions.
|
|
|
|
* libqpdf/QPDFWriter.cc: fix copyEncryptionParameters to fix the
|
|
minimum PDF version based on other file's encryption needs. This
|
|
is a fix to code added on 2012-07-14 and did not impact previously
|
|
released code.
|
|
|
|
* libqpdf/QPDFWriter.cc (copyEncryptionParameters): Bug fix: qpdf
|
|
was not preserving whether or not AES encryption was being used
|
|
when copying encryption parameters. The file would still have
|
|
been properly encrypted, but a file that started off encrypted
|
|
with AES could have become encrypted with RC4.
|
|
|
|
2012-07-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* QPDFWriter: add public copyEncryptionParameters to allow copying
|
|
encryption parameters from another file.
|
|
|
|
* QPDFWriter: detect if the user has inserted an indirect object
|
|
from another QPDF object and throw an exception directing the user
|
|
to copyForeignObject.
|
|
|
|
2012-07-11 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Added new APIs to copy objects from one QPDF to another. This
|
|
includes letting QPDF::addPage() (and QPDF::addPageAt()) accept a
|
|
page object from another QPDF and adding
|
|
QPDF::copyForeignObject(). See QPDF.hh for details.
|
|
|
|
* Add method QPDFObjectHandle::getOwningQPDF() to return the QPDF
|
|
object associated with an indirect QPDFObjectHandle.
|
|
|
|
* Add convenience methods to QPDFObjectHandle: assertIndirect(),
|
|
isPageObject(), isPagesObject()
|
|
|
|
* Cache when QPDF::pushInheritedAttributesToPage() has been called
|
|
to avoid traversing the pages trees multiple times. This state is
|
|
cleared by QPDF::updateAllPagesCache() and ignored by
|
|
QPDF::flattenPagesTree().
|
|
|
|
2012-07-08 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFObjectHandle::newReserved to create a reserved object
|
|
and QPDF::replaceReserved to replace it with a real object.
|
|
QPDFObjectHandle::newReserved reserves an object ID in a QPDF
|
|
object and ensures that any references to it remain unresolved.
|
|
When QPDF::replaceReserved is later called, previous references to
|
|
the reserved object will properly resolve to the replaced object.
|
|
|
|
2012-07-07 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* NOTE: BREAKING API CHANGE. Remove previously required length
|
|
parameter from the version QPDFObjectHandle::replaceStreamData
|
|
that uses a stream data provider. Prior to qpdf 3.0.0, you had to
|
|
compute the stream length in advance so that qpdf could internally
|
|
verify that the stream data had the same length every time the
|
|
provider was invoked. Now this requirement is enforced a
|
|
different way, and the length parameter is no longer required.
|
|
Note that I take API-breaking changes very seriously and only did
|
|
it in this case since the lack of need to know length in advance
|
|
could significantly simplify people's code. If you were
|
|
previously going to a lot of trouble to compute the length of the
|
|
new stream data in advance, you now no longer have to do that.
|
|
You can just drop the length parameter and remove any code that
|
|
was previously computing the length. Thanks to Tobias Hoffmann
|
|
for pointing out how annoying the original interface was.
|
|
|
|
2012-07-05 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFWriter methods to write to an already open stdio FILE*.
|
|
Implementation and idea area based on contributions from Tobias
|
|
Hoffmann.
|
|
|
|
2012-07-04 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Accept changes from Tobias Hoffmann: add public method
|
|
QPDF::pushInheritedAttributesToPage including warnings for
|
|
non-inherited keys that may be discarded from /Pages by
|
|
non-conformant PDF files when the /Pages tree is flattened.
|
|
|
|
2012-06-27 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add Pl_Concatenate pipeline for stream concatenation also
|
|
implemented by Tobias Hoffmann. Also added test code
|
|
(libtests/concatenate.cc).
|
|
|
|
* Add new methods implemented by Tobias Hoffmann:
|
|
QPDFObjectHandle::newReal(double) and
|
|
QPDFObjectHandle::newStream(QPDF*, std::string const&).
|
|
|
|
2012-06-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Minor changes so that support for PDF files larger than 4GB
|
|
works well with 32-bit and 64-bit Linux and also with 32-bit and
|
|
64-bit Windows with both MSVC and mingw.
|
|
|
|
* Rework internal methods for doing recovery of the cross
|
|
reference tables for much greater efficiency both in terms of time
|
|
and memory usage.
|
|
|
|
2012-06-24 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Support PDF files larger than 4 GB. This involved many changes
|
|
to the ABI to increase the size of integer types used in various
|
|
places as well as increasing the amount of padding used when
|
|
creating linearized files. Automated tests for large files are
|
|
disabled by default. Run ./configure --help for information on
|
|
enabling them. Running the tests requires 11 GB of free disk
|
|
space and takes several minutes.
|
|
|
|
2012-06-22 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* examples/pdf-create.cc: Provide an example of creating a PDF
|
|
from scratch. This simple PDF has a single page with some text
|
|
and an image.
|
|
|
|
* Add empty QPDFObjectHandle factories for array and dictionary.
|
|
With PDF-from-scratch capability, it is useful to be able to
|
|
create empty arrays and dictionaries and add keys to them.
|
|
Updated pdf_from_scratch.cc to use these interfaces.
|
|
|
|
2012-06-21 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDF::emptyPDF() to create an empty QPDF object suitable for
|
|
adding pages and other objects to. pdf_from_scratch.cc is test
|
|
code that exercises it.
|
|
|
|
* make/libtool.mk: Place user-specified CPPFLAGS and LDFLAGS later
|
|
in the compilation so that if a user installs things in a
|
|
non-standard place that they have to tell the build about, earlier
|
|
versions of qpdf installed there won't break the build. Thanks to
|
|
Macports for reporting this. (Fixes bug 3468860.)
|
|
|
|
* Instead of using off_t in the public APIs, use qpdf_offset_t
|
|
instead. This is defined as long long in qpdf/Types.h. If your
|
|
system doesn't support long long, you can redefine it.
|
|
|
|
* Add pkg-config files
|
|
|
|
* QPDFObjectHandle: add shallowCopy() method
|
|
|
|
* QPDF: add new APIs for adding and removing pages. This includes
|
|
addPage(), addPageAt(), and removePage(). Also a method
|
|
updateAllPagesCache() is now available to force update of the
|
|
internal pages cache if you should modify the pages structure
|
|
manually.
|
|
|
|
* QPDF: new processFile method that takes an open FILE*
|
|
instead of a filename.
|
|
|
|
2012-06-20 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add new array mutation routines to QPDFObjectHandle.
|
|
Implemented by Tobias Hoffmann.
|
|
|
|
* Rework APIs that use size_t, off_t, and primitive integer types
|
|
so that size_t is used for sizes of memory and off_t is used for
|
|
file offsets. Also set _FILE_OFFSET_BITS so that large files can
|
|
be supported on 32-bit UNIX/Linux platforms. The code assumes in
|
|
places that sizeof(off_t) >= sizeof(size_t). This resulted in
|
|
non-compatible ABI changes and hopefully clears the way for QPDF
|
|
to work with files that are larger than 4 GiB in size.
|
|
|
|
* Add support for versioned symbols on ELF platforms.
|
|
|
|
* Various fixes for gcc 4.7
|
|
|
|
2011-04-06 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix PCRE to stop using deprecated (and now dropped) interfaces.
|
|
|
|
2011-12-28 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.3.1: release
|
|
|
|
* include <stdint.h> if available to support MSVC 2010
|
|
|
|
* Since PCRE is not necessarily thread safe, don't declare any
|
|
PCRE objects to be static.
|
|
|
|
* Disregard stderr output from ghostscript when using it to
|
|
compare images in the test suite; see comments in qpdf.test for
|
|
details.
|
|
|
|
* Fixed a few documentation errors.
|
|
|
|
2011-08-11 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.3.0: release
|
|
|
|
* include/qpdf/qpdf-c.h ("C"): add new methods
|
|
qpdf_init_write_memory, qpdf_get_buffer_length, and
|
|
qpdf_get_buffer to support writing to memory from the C API.
|
|
|
|
* include/qpdf/qpdf-c.h ("C"): add new methods qpdf_get_info_key
|
|
and qpdf_set_info_key for manipulating text fields of the /Info
|
|
dictionary.
|
|
|
|
2011-08-10 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/QPDFWriter.cc (copyEncryptionParameters): preserve
|
|
whether metadata is encryption. This fixes part of bug 3173659:
|
|
the password becomes invalid if qpdf copies an encrypted file with
|
|
cleartext-metadata.
|
|
|
|
* include/qpdf/QPDFWriter.hh: add a new constructor that takes
|
|
only a QPDF reference and leaves specification of output for
|
|
later. Add methods setOutputFilename() to set the output to a
|
|
filename or stdout, and setOutputMemory() to indicate that output
|
|
should go to a memory buffer. Add method getBuffer() to retrieve
|
|
the buffer used if output was saved to a memory buffer.
|
|
|
|
* include/qpdf/QPDF.hh: add methods replaceObject() and
|
|
swapObjects() to allow replacement of an object and swapping of
|
|
two objects by object ID.
|
|
|
|
* include/qpdf/QPDFObjectHandle.hh: add new methods getDictAsMap()
|
|
and getArrayAsVector() for returning the elements of a dictionary
|
|
or an array as a map or vector.
|
|
|
|
2011-06-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.2.4: release
|
|
|
|
2011-06-23 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* make/libtool.mk (install): Do not strip executables and shared
|
|
libraries during installation. Leave that up to the packager.
|
|
|
|
* configure.ac: disable -Werror by default.
|
|
|
|
2011-05-07 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/QPDF_linearization.cc (isLinearized): remove unused
|
|
offset variable, found by a gcc 4.6 warning.
|
|
|
|
2011-04-30 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.2.3: release
|
|
|
|
* libqpdf/QPDF.cc (readObjectInternal): Accept the case of the
|
|
stream keyword being followed by carriage return by itself. While
|
|
this is not permitted by the specification, there are PDF files
|
|
that do this, and other readers can read them.
|
|
|
|
* libqpdf/Pl_QPDFTokenizer.cc (processChar): When an inline image
|
|
is detected, suspend normalization only up to the end of the
|
|
inline image rather than for the remainder of the content stream.
|
|
(Fixes qpdf-Bugs 3152169.)
|
|
|
|
2011-01-31 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/QPDF.cc (readObjectAtOffset): use -1 rather than 0 when
|
|
reading an object at a given to indicate that no object number is
|
|
expected. This allows xref recovery to proceed even if a file
|
|
uses the invalid object number 0 as a regular object.
|
|
|
|
* libqpdf/QPDF_linearization.cc (isLinearized): use -1 rather than
|
|
0 as a sentinel for not having found the first object in the
|
|
file. Since -1 can never match the regular expression, this
|
|
prevents an infinite loop when checking a file that starts with
|
|
(erroneous) 0 0 obj. (Fixes qpdf-Bugs-3159950.)
|
|
|
|
2010-10-04 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.2.2: release
|
|
|
|
* include/qpdf/qpdf-c.h: Add qpdf_read_memory to C API to call
|
|
QPDF::processMemoryFile.
|
|
|
|
2010-10-01 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.2.1: release
|
|
|
|
* include/qpdf/QPDF.hh: Add setOutputStreams method to allow
|
|
redirection of library-generated output/error to alternative
|
|
streams.
|
|
|
|
* include/qpdf/QPDF.hh: Add processMemoryFile method for
|
|
processing a PDF file from a memory buffer instead of a file.
|
|
|
|
2010-09-24 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/QPDF.cc: change private "file" method to be a
|
|
PointerHolder<InputSource> to prepare qpdf for being able to work
|
|
with PDF files loaded into memory in addition to working with
|
|
files on disk.
|
|
|
|
* include/qpdf/PointerHolder.hh: add operator* and operator->
|
|
methods so that PointerHolder objects can be used like pointers.
|
|
This is consistent with the smart pointer objects in the next
|
|
revision of C++.
|
|
|
|
2010-09-05 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/QPDF.cc (readObjectInternal): Recognize empty objects
|
|
and treat them as null.
|
|
|
|
* libqpdf/QPDF_Stream.cc (filterable): Handle inline image filter
|
|
abbreviations as stream filter abbreviations. Although this is
|
|
not technically allowed by the PDF specification, table H.1 in the
|
|
pre-ISO spec indicates that Adobe's readers accept them. Thanks
|
|
to Jian Ma <stronghorse@tom.com> for bringing this to my
|
|
attention.
|
|
|
|
2010-08-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.2.0: release
|
|
|
|
* Rename README.windows to README-windows.txt and convert its line
|
|
endings to Windows-style line endings. Also mention Jian Ma's VC6
|
|
port in the manual and README-windows.txt.
|
|
|
|
2010-08-09 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFObjectHandle::getRawStreamData to return raw
|
|
(unfiltered) stream data.
|
|
|
|
2010-08-08 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.2.rc1: release
|
|
|
|
2010-08-05 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add QPDFObjectHandle::addPageContents, a convenience routine for
|
|
appending or prepending new streams to a page's content streams.
|
|
The "pdf-double-page-size" example illustrates its use.
|
|
|
|
* Add new methods to QPDFObjectHandle: replaceStreamData and
|
|
newStream. These methods allow users of the qpdf library to add
|
|
new streams and to replace data of existing streams. The
|
|
"pdf-double-page-size" and "pdf-invert-images" examples illustrate
|
|
their use.
|
|
|
|
2010-06-06 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix memory leak for QPDF objects whose underlying PDF objects
|
|
contain circular references. Thanks to Jian Ma
|
|
<stronghorse@tom.com> for calling my attention to the memory leak.
|
|
|
|
2010-04-25 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.1.5: release
|
|
|
|
* libqpdf/QPDF_encryption.cc (compute_encryption_key): remove
|
|
restrictions on length of file identifier string. (Fixes
|
|
qpdf-Bugs-2991412.)
|
|
|
|
2010-04-18 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.1.4: release
|
|
|
|
* libqpdf/QPDFWriter.cc (writeLinearized): the padding calculation
|
|
fix in 2.1.2 was applied in only one place but it was needed in
|
|
two places since there are actually two cross reference streams in
|
|
a linearized file. The new padding calculation is now used for
|
|
both streams. Hopefully this should put an end to linearization
|
|
padding problems. (Fixes qpdf-Bugs-2979219.)
|
|
|
|
2010-04-10 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* qpdf/qpdf.cc (main): Since qpdf --check only checks syntax and
|
|
stream encoding without doing any semantic checks, make the output
|
|
clearer when no errors around found. This is inspired by
|
|
qpdf-Bugs-2983225.
|
|
|
|
2010-03-27 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.1.3: release
|
|
|
|
* libqpdf/QPDF_optimization.cc (flattenScalarReferences): Flatten
|
|
scalar references for unreferenced objects as well as those seen
|
|
during traversal of the file. This matters when preserving object
|
|
streams that contain unreferenced objects with indirect scalars.
|
|
(Fixes qpdf-Bugs-2974522.) Updated TODO with a description of a
|
|
possibly better fix involving removal of flattenScalarReferences.
|
|
|
|
* libqpdf/Pl_AES_PDF.cc (finish): Don't complain if an AES input
|
|
buffer is not a multiple of 16 bytes. Instead, just pad with
|
|
nulls and hope for the best. PDF files have been encountered "in
|
|
the wild" that contain AES buffers that aren't a multiple of 16
|
|
bytes.
|
|
|
|
2010-01-24 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.1.2: release
|
|
|
|
* libqpdf/QPDFWriter.cc: fix logic error in padding calculation.
|
|
When writing linearized files with cross reference streams, the
|
|
padding calculation failed to take differences in sizes of
|
|
compressed data between pass 1 and pass 2 into consideration.
|
|
|
|
2009-12-14 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.1.1: release
|
|
|
|
* qpdf/qtest/qpdf.test: improve test for acroread to make sure it
|
|
actually works and is not just present in the path.
|
|
|
|
2009-12-13 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/qpdf/Pl_AES_PDF.hh: include <stdint.h>, if available, so
|
|
we have valid definitions of uint32_t.
|
|
|
|
2009-10-30 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.1: release
|
|
|
|
* libqpdf/QPDF.cc: be more forgiving of extraneous whitespace in
|
|
the xref table and while recovering from error conditions.
|
|
|
|
2009-10-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Work around failure of PCRE test case; this test case exercises
|
|
an aspect of PCRE that qpdf does not use, and the test fails with
|
|
the version of PCRE on Red Hat Enterprise Linux 5, so we ignore
|
|
failure on this particular test case.
|
|
|
|
* Fix RPM .spec file to include "C" examples
|
|
|
|
2009-10-24 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.1.rc1: release
|
|
|
|
* Provide interfaces for getting qpdf's own version number
|
|
|
|
2009-10-19 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* include/qpdf/QPDF.hh (QPDF): getWarnings now returns a list of
|
|
QPDFExc rather than a list of strings. This way, warnings may be
|
|
inspected in more detail.
|
|
|
|
* Include information about the last object read in most error
|
|
messages. Most of the time, this will provide a good hint as to
|
|
which object contains the error, but it's possible that the last
|
|
object read may not necessarily be the one that has the error if
|
|
the erroneous object was previously read and cached.
|
|
|
|
2009-10-18 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* If forcing version, disable object stream creation and/or
|
|
encryption if previous specifications are incompatible with new
|
|
version. It is still possible that PDF content, compression
|
|
schemes, etc., may be incompatible with the new version, but at
|
|
least this way, older viewers will at least have a chance.
|
|
|
|
* libqpdf/QPDFWriter.cc (unparseObject): avoid compressing
|
|
Metadata streams if possible.
|
|
|
|
2009-10-13 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Upgrade embedded qtest to version 1.4, which allows the test
|
|
suite to be run in Windows with MSYS and ActiveState Perl rather
|
|
than requiring Cygwin perl.
|
|
|
|
2009-10-04 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Implement support AES encrypt and crypt filters. Implementation
|
|
is not fully tested due to lack of test data but has been tested
|
|
for several cases.
|
|
|
|
2009-10-04 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add methods to QPDFWriter and corresponding command line
|
|
arguments to qpdf to set the minimum output PDF version and also
|
|
to force the version to a particular value.
|
|
|
|
* libqpdf/QPDF.cc (processXRefStream): warn and ignore extra xref
|
|
stream entries when stream is larger than reported size. This
|
|
used to be a fatal error. (Fixes qpdf-Bugs-2872265.)
|
|
|
|
2009-09-27 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Add several methods to query permissions controlled by the
|
|
encryption dictionary. Note that qpdf does not enforce these
|
|
permissions even though it allows the user to query them.
|
|
|
|
* The function QPDF::getUserPassword returned the user password
|
|
with the required padding as specified by the PDF specification.
|
|
This is seldom useful to users. This function has been replaced
|
|
by QPDF::getPaddedUserPassword. Call the new
|
|
QPDF::getTrimmedUserPassword to retrieve the user password in a
|
|
human-readable format.
|
|
|
|
* qpdf/qpdf.cc (main): qpdf --check now prints the PDF version
|
|
number in addition to its other output.
|
|
|
|
2009-09-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Removed all references to QEXC; now using std::runtime_error and
|
|
std::logic_error and their subclasses for all exceptions.
|
|
|
|
2009-05-03 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.0.6: release
|
|
|
|
* libqpdf/QPDF_Stream.cc (filterable): ignore /DecodeParms if it's
|
|
not a type we recognize. (Fixes qpdf-Bugs-2779746.)
|
|
|
|
2009-03-10 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.0.5: release
|
|
|
|
2009-03-09 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/Pl_LZWDecoder.cc: adjust LZWDecoder full table
|
|
detection, now having been able to adequately test boundary
|
|
conditions both and with and without early code change. Also
|
|
compared implementation with other LZW decoders.
|
|
|
|
2009-03-08 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* qpdf/fix-qdf (write_ostream): Adjust offsets while writing
|
|
object streams to account for changes in the length of the
|
|
dictionary and offset tables.
|
|
|
|
* qpdf/qpdf.cc (main): In check mode, in addition to checking
|
|
structure of file, attempt to decode all stream data.
|
|
|
|
* libqpdf/QPDFWriter.cc (QPDFWriter::writeObject): In QDF mode,
|
|
write a comment to the QDF file before each object that indicates
|
|
the object ID of the corresponding object from the original file.
|
|
Add --no-original-object-ids flag to qpdf and
|
|
setSuppressOriginalObjectIDs() method to QPDFWriter to turn this
|
|
behavior off.
|
|
|
|
* libqpdf/QPDF.cc (QPDF::pipeStreamData): Issue a warning instead
|
|
of failing if there is a problem found while decoding stream.
|
|
|
|
* qpdf/qpdf.cc: Exit with a status of 3 if warnings were found
|
|
regardless of what mode we're in.
|
|
|
|
2009-02-21 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.0.4: release
|
|
|
|
2009-02-20 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Fix many typos in comments and strings.
|
|
|
|
* qpdf/qpdf.cc: in --check mode, if there are warnings but no
|
|
errors, exit with a status of 3.
|
|
|
|
* libqpdf/QPDF.cc (QPDF::insertXrefEntry): when recovering the
|
|
cross-reference table, have objects we encounter later in the file
|
|
supersede those we found earlier. This improves the chances of
|
|
being able to recover appended files with damaged cross-reference
|
|
tables.
|
|
|
|
2009-02-19 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/Pl_LZWDecoder.cc: correct logic error for previously
|
|
untested case of running the LZW decoder without the "early code
|
|
change" flag. Thanks to a bug report from "Atom Smasher", I
|
|
finally was able to obtain an input stream compressed in this way.
|
|
|
|
2009-02-15 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.0.3: release
|
|
|
|
2008-12-11 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* qpdf/qpdf.cc (main): Accept -help and -version as well as --help
|
|
and --version
|
|
|
|
2008-11-23 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* Include stdio.h in a few files for proper compilation with (yet
|
|
to be released) gcc 4.4
|
|
|
|
* updated embedded qtest to version 1.3
|
|
|
|
* libqpdf/QPDF_String.cc (QPDF_String::getUTF8Val): handle
|
|
UTF-16BE properly rather than just treating the string as a string
|
|
of 16-bit characters.
|
|
|
|
2008-06-30 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.0.2: release
|
|
|
|
* updated embedded qtest to version 1.2 (includes previous
|
|
changes)
|
|
|
|
2008-06-07 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* qpdf/qtest/qpdf/diff-encrypted: change == to = so that the test
|
|
suite passes when /bin/sh is not bash
|
|
|
|
2008-05-07 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* qtest/bin/qtest-driver (run_test): increase timeout for qtest to
|
|
be more tolerant of slow machines
|
|
|
|
2008-05-06 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.0.1: release
|
|
|
|
* make/rules.mk: fix logic with .dep generation for .lo files so
|
|
that dependencies work properly with libtool
|
|
|
|
2008-05-05 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/qpdf/MD5.hh: fix header to be 64-bit clean
|
|
|
|
* configure.ac: add tests for sized integer types
|
|
|
|
2008-05-04 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* libqpdf/QPDF_encryption.cc: do not assume size_t is unsigned int
|
|
|
|
* qpdf/qtest/qpdf.test: removed locale-specific tests. These were
|
|
really to check bugs in perl 5.8.0 and are obsolete now. They
|
|
also make the test suite fail in some environments that don't have
|
|
all the locales fully configured.
|
|
|
|
* various: updated several files for gcc 4.3 by adding missing
|
|
includes (string.h, stdlib.h)
|
|
|
|
2008-04-26 Jay Berkenbilt <ejb@ql.org>
|
|
|
|
* 2.0: initial public release
|