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Ben Wagner 13983b058e [base] Fix leak of internal stream marked external. 
`open_face_from_buffer` allocates a new `FT_Stream` to pass to
`ft_open_face_internal`.  Because this is an `FT_OPEN_STREAM`,
`ft_open_face_internal` will mark this as an 'external stream', which the
caller must free.  However, `open_face_from_buffer` cannot directly free it
because the stream must last as long as the face.  There is currently an
attempt at this by clearing the 'external stream' bit after
`open_face_from_buffer` returns successfully.  However, this is too late as
the original stream may have already been closed and the stream on the face
may not be the same stream as originally passed.

It is tempting to use `FT_OPEN_MEMORY` and let `ft_open_face_internal`
create the stream internally.  However, with this method there is no means
to pass through a 'close' function to the created stream to free the
underlying data, which must be owned by the stream.

A possibility is to check on success if the stream of the face is the same
as the original stream.  If it is then unset the external flag.  If not,
then free the original stream.  Unfortunately, while no current
implementation does so, it is possible that the face still has the original
stream somewhere other than as the `FT_FaceRec::stream`.  The stream needs
to remain available for the life of the face or until it is closed,
whichever comes earlier.

The approach taken here is to let the stream own itself.  When the stream is
closed it will free itself.

* src/base/ftobjs.c (memory_stream_close): Free `stream`.
(open_face_from_buffer): Simplify error handling, since
`ft_open_face_internal` always closes `args.stream` on any error.

Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54930
2023-01-17 08:48:33 +01:00
builds * builds/unix/configure.raw: Don't check for memcpy and memmove. 2022-12-14 09:19:26 +01:00
devel Add TT_CONFIG_OPTION_NO_BORING_EXPANSION configuration macro. 2022-11-12 17:11:36 +01:00
docs docs/CHANGES: Updated. 2022-11-08 08:27:52 +01:00
include [sfnt] Remove temporary runtime flag for variable 'COLR' v1. 2023-01-16 14:02:36 +01:00
objs * builds/windows/vc2010/freetype.vcxproj: AfterBuild copy. 2017-12-16 22:00:40 -05:00
src [base] Fix leak of internal stream marked external. 2023-01-17 08:48:33 +01:00
subprojects * subprojects/zlib.wrap: Micro-update from upstream. 2022-12-07 17:05:17 +01:00
tests * tests/issue-1063/main.c: s/PATH_MAX/FILENAME_MAX/. 2021-10-20 11:27:03 -04:00
.clang-format Add .clang-format file 2020-07-16 15:51:06 +02:00
.gitignore [meson] Add first regression test to FreeType 2021-06-16 10:28:47 +02:00
.gitlab-ci.yml ci: bump windows image and use newer runner and vs2019 2022-08-06 11:52:32 +00:00
.gitmodules Move 'dlg' submodule to subprojects directory. 2021-02-16 14:07:18 +01:00
.mailmap .mailmap: Typo. 2022-01-24 07:57:20 +01:00
autogen.sh autogen.sh: Fix building when freetype is itself a git submodule. 2022-04-26 16:07:42 -07:00
CMakeLists.txt CMakeLists.txt (FT_ENABLE_ERROR_STRINGS): New configuration option. 2022-08-21 19:58:35 +02:00
configure * configure: s/egrep/grep -E/ 2022-07-24 19:49:56 +02:00
LICENSE.TXT [autofit] Don't depend on 'hb-ft'. 2023-01-06 12:54:17 +01:00
Makefile Update all copyright notices. 2022-01-11 10:54:10 +01:00
meson_options.txt Update all copyright notices. 2022-01-11 10:54:10 +01:00
meson.build [meson] Use generated ftmodule.h 2022-11-14 14:43:04 +01:00
modules.cfg Add 'svg' module for OT-SVG rendering. 2022-01-20 16:45:18 +00:00
README REAMDE: Mention that gitlab's 'download' button doesn't work. 2022-05-18 07:06:58 +02:00
README.git Update all copyright notices. 2022-01-11 10:54:10 +01:00
vms_make.com Update all copyright notices. 2022-01-11 10:54:10 +01:00

README 

FreeType 2.12.1
===============

Homepage: https://www.freetype.org

FreeType is a freely available software library to render fonts.

It  is  written  in  C,   designed  to  be  small,  efficient,  highly
customizable,  and portable  while capable  of producing  high-quality
output (glyph images) of most vector and bitmap font formats.

Please   read  the   `docs/CHANGES`   file,   it  contains   IMPORTANT
INFORMATION.

Read the files `docs/INSTALL*`  for installation instructions; see the
file `docs/LICENSE.TXT` for the available licenses.

For using FreeType's git repository  instead of a distribution bundle,
please read file  `README.git`.  Note that you have  to actually clone
the repository; using a snapshot will  not work (in other words, don't
use gitlab's 'Download' button).

The FreeType 2 API reference is located in directory `docs/reference`;
use the file  `index.html` as the top entry point.   [Please note that
currently  the search  function  for  locally installed  documentation
doesn't work due to cross-site scripting issues.]

Additional documentation is  available as a separate  package from our
sites.  Go to

  https://download.savannah.gnu.org/releases/freetype/

and download one of the following files.

  freetype-doc-2.12.1.tar.xz
  freetype-doc-2.12.1.tar.gz
  ftdoc2121.zip

To view the documentation online, go to

  https://www.freetype.org/freetype2/docs/


Mailing Lists
-------------

The preferred  way of  communication with the  FreeType team  is using
e-mail lists.

  general use and discussion:      freetype@nongnu.org
  engine internals, porting, etc.: freetype-devel@nongnu.org
  announcements:                   freetype-announce@nongnu.org
  git repository tracker:          freetype-commit@nongnu.org

The lists are moderated; see

  https://www.freetype.org/contact.html

how to subscribe.


Bugs
----

Please submit bug reports at

  https://gitlab.freedesktop.org/freetype/freetype/-/issues

Alternatively,    you    might    report    bugs    by    e-mail    to
`freetype-devel@nongnu.org`.    Don't  forget   to  send   a  detailed
explanation of the problem -- there  is nothing worse than receiving a
terse message that only says 'it doesn't work'.


Patches
-------

For larger changes please provide merge requests at

  https://gitlab.freedesktop.org/freetype/freetype/-/merge_requests

Alternatively, you can send patches to the `freetype-devel@nongnu.org`
mailing list  -- and thank you  in advance for your  work on improving
FreeType!

Details on the process can be found here:

  https://www.freetype.org/developer.html#patches


Enjoy!

  The FreeType Team

----------------------------------------------------------------------

Copyright (C) 2006-2022 by
David Turner, Robert Wilhelm, and Werner Lemberg.

This  file is  part of  the FreeType  project, and  may only  be used,
modified,  and distributed  under the  terms of  the  FreeType project
license,  LICENSE.TXT.  By  continuing to  use, modify,  or distribute
this file you  indicate that you have read  the license and understand
and accept it fully.


--- end of README ---