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Start 9.0.0 release notes
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Jay Berkenbilt
parent
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commit
557bd3c261
@ -4276,6 +4276,164 @@ print "\n";
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<filename>ChangeLog</filename> in the source distribution.
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</para>
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<variablelist>
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<varlistentry>
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<term>9.0.0: XXX</term>
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<listitem>
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<itemizedlist>
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<listitem>
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<para>
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Incompatible API (source-level) Changes (minor)
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</para>
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<itemizedlist>
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<listitem>
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<para>
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The method <function>QUtil::strcasecmp</function> has been
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renamed to <function>QUtil::str_compare_nocase</function>.
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This incompatible change is necessary to enable qpdf to
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build on platforms that define
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<function>strcasecmp</function> as a macro.
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</para>
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</listitem>
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<listitem>
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<para>
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The <function>QPDF::copyForeignObject</function> method has
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an overloaded version that took a boolean parameter that was
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not used. If you were using this version, just omit the
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extra parameter.
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</para>
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</listitem>
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<listitem>
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<para>
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There was a version
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<function>QPDFTokenizer::expectInlineImage</function> that
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took no arguments. This version has been removed since it
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caused the tokenizer to return incorrect inline images. A
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new version was added some time ago that produces correct
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output. This is a very low level method that doesn't make
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sense to call outside of qpdf's lexical engine. There are
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higher level methods for tokenizing content streams.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Bug Fixes
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</para>
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<itemizedlist>
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<listitem>
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<para>
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A small handful of memory issues, assertion failures, and
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unhandled exceptions that could occur on badly mangled input
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files have been fixed. Most of these problems were found by
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Google's OSS-Fuzz project.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Build Changes
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</para>
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<itemizedlist>
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<listitem>
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<para>
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On platforms that support it, qpdf now builds with
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<option>-fvisibility=hidden</option>. If you build qpdf with
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your own build system, this is now safe to use. This
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prevents methods that are not part of the public API from
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being exported by the shared library, and makes qpdf's ELF
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shared libraries (used on Linux, MacOS, and most other UNIX
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flavors) behave more like the Windows DLL. Since the DLL
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already behaves in much this way, it is unlikely that there
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are any methods that were accidentally not exported.
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However, with ELF shared libraries, typeinfo for some
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classes has to be explicitly exported. If there are problems
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in dynamically linked code catching exceptions or
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subclassing, this could be the reason. If you see this,
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please report a bug at <ulink
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url="https://github.com/qpdf/qpdf/issues/">pikepdf</ulink>.
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</para>
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</listitem>
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<listitem>
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<para>
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QPDF is now compiled with integer conversion and sign
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conversion warnings enabled. Numerous changes were made to
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the library to make this safe.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Library Enhancements
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</para>
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<itemizedlist>
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<listitem>
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<para>
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A new namespace <classname>QIntC</classname>, provided by
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<filename>qpdf/QIntC.hh</filename>, provides safe conversion
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methods between different integer types. These conversion
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methods do range checking to ensure that the cast can be
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performed with no loss of information. Every use of
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<function>static_cast</function> in the library was
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inspected to see if it could use one of these safe
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converters instead. See <xref linkend="ref.casting"/> for
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additional details.
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</para>
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</listitem>
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<listitem>
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<para>
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New methods have been added to <classname>QUtil</classname>
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for converting back and forth between strings and unsigned
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integers: <function>uint_to_string</function>,
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<function>uint_to_string_base</function>,
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<function>string_to_uint</function>, and
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<function>string_to_ull</function>.
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</para>
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</listitem>
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<listitem>
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<para>
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New methods have been added to
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<classname>QPDFObjectHandle</classname> that return the
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value of <classname>Integer</classname> objects as
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<type>int</type> or <type>unsigned int</type> with range
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checking and sensible fallback values, and a new method was
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added to return an unsigned value. This makes it easier to
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write code that is safe from unintentional data loss.
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Functions: <function>getUIntValue</function>,
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<function>getIntVauleAsInt</function>,
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<function>getUIntValueAsUInt</function>.
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</para>
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</listitem>
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<listitem>
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<para>
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A new helper method
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<function>QUtil::read_file_into_memory</function> was added.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>
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Other Notes
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</para>
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<itemizedlist>
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<listitem>
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<para>
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QPDF has been fully integrated into <ulink
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url="https://github.com/google/oss-fuzz">Google's OSS-Fuzz
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project</ulink>. This project exercises code with randomly
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mutated inputs and is great for discovering hidden security
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crashes and security issues. Several bugs found by oss-fuzz
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have already been fixed in qpdf.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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</itemizedlist>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>8.4.2: May 18, 2019</term>
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<listitem>
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