Commit Graph

7888 Commits

Author SHA1 Message Date
Werner Lemberg
646cc8ef8d * src/cff/cffgload.c (cff_slot_load): Avoid memory leak.
Fixes issue #1204.
2023-02-02 10:51:39 +01:00
Werner Lemberg
9508811a3a * src/truetype/ttgxvar.c (tt_var_get_item_delta): Check face->blend.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55581
2023-02-01 12:01:58 +01:00
Werner Lemberg
aec87c0955 * docs/CHANGES: Add news for 'freetype-demos'. 2023-02-01 11:52:26 +01:00
Werner Lemberg
9c23b89d54 * subprojects/harfbuzz.wrap, subprojects/libpng.wrap: Updated. 2023-01-30 17:16:34 +01:00
Werner Lemberg
e97544a739 Minor changes.
Comment fixes, typos, removing of unnecessary parentheses.
2023-01-28 17:04:38 +01:00
Werner Lemberg
bacc48e616 Whitespace. 2023-01-28 17:04:11 +01:00
Behdad Esfahbod
bea675cde6 [ttgxvar] Fix crash in COLRv1.
This is a stopgap until issue #1202 is properly fixed.

* src/truetype/ttxgvar.c (tt_var_get_item_delta): Check `normalizedcoords`.
2023-01-27 06:53:46 +01:00
Werner Lemberg
82ce172669 The 'COLR' v1 API will no longer be experimental in the next release. 2023-01-19 07:17:14 +01:00
Alexei Podtelezhnikov
0982d3ecc6 * docs/oldlogs/ChangeLog.210: Typos. 2023-01-18 18:31:27 +00:00
Ben Wagner
d680908af2 [base] Fix typo.
* src/base/ftobjs.c (open_face_PS_from_sfnt_stream): Request module 't1cid',
not 'cid'.
2023-01-18 09:00:21 +01:00
Ben Wagner
188019eb70 [base] Return error if requested driver is not found.
In `open_face_from_buffer` it is possible that a driver is requested but
FreeType was built without the requested module.  Return an error in this
case to indicate that the request could not be satisfied, rather than trying
all existing driver modules.

* src/base/ftobjs.c (open_face_from_buffer): Return `FT_Err_Missing_Module`
if a driver is specified but not found.
2023-01-18 08:37:51 +01:00
Dominik Röttsches
a297feab0e [sfnt] Avoid nullptr dereference in reading malformed 'COLR' v1 table.
Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=1408044.

* src/sfnt/ttcolr.c (tt_face_load_colr): When the 'COLR' v1 table header is
too small, don't deallocate delta set index map structures.
2023-01-18 08:22:53 +01:00
Werner Lemberg
f80be4e959 * src/tools/update-copyright: Allow execution from other repositories.
We use this for `freetype-demos`.
2023-01-17 19:03:45 +01:00
Werner Lemberg
65f8523706 Update all copyright notices. 2023-01-17 09:18:25 +01:00
Werner Lemberg
6c1bd0f2b2 * src/tools/no-copyright: Updated. 2023-01-17 09:15:36 +01:00
Ben Wagner
29f83d1dd5 [base] 'close' callback may not use stream->memory.
The documentation for `FT_StreamRec::memory` states that it 'shouldn't be
touched by stream implementations'.  This is true even for internal
implementations of the 'close' callback, since it is not guaranteed that
`memory` will even be set when the 'close' callback occurs.

* src/base/ftobjs.c (new_memory_stream): stash current `memory` in
`stream->descriptor`.
(memory_stream_close): Use it.
2023-01-17 08:59:25 +01:00
Ben Wagner
0d4f887c79 [base] Always close user-provided stream.
The `FT_Open_Face` documentation states

> If `FT_OPEN_STREAM` is set in `args->flags`, the stream in `args->stream`
> is automatically closed before this function returns any error (including
> `FT_Err_Invalid_Argument`).

However, if the user provides a stream in `args.stream` with
`FT_OPEN_STREAM` set and a `close` function, but then for some reason passes
NULL for `aface` and a non-negative `face_index`, the error
`Invalid_Argument` is returned but the `close` callback will not be called
on the user-provided stream.  This may cause resource leaks if the caller is
depending on the `close` callback to free resources.

The difficulty is that a user may fill out a `FT_StreamRec` and pass its
address as `args.stream`, but the stream isn't really 'live' until
`FT_Stream_New` is called on it (and `memory` is set).  In particular, it
cannot really be cleaned up properly in `ft_open_face_internal` until the
stream pointer has been copied into the `stream` local variable.

* src/base/ftobj.c (ft_open_face_internal): Ensure that user-provided
`args.stream.close` is called even with early errors.
2023-01-17 08:54:11 +01:00
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
Werner Lemberg
6a179ff7d5 sr/*.c: Various minor fixes.
* src/autofit/ft-hb.c (_hb_ft_reference_table): Call `FT_UNUSED` after
variable declarations.

* src/gxvalid/gxvjust.c (gxv_just_widthDeltaClusters_validate): Eliminate
unused variable.

* src/gzip/ftgzip.c: Don't call GCC '-Wstrict-prototypes' pragma for C++
compiler.

* src/sfnt/ttcolr.c (ENSURE_READ_BYTES): Remove final semicolon to avoid
compiler warning.

* src/sfnt/ttsvg.c (tt_face_load_svg_doc): Fix signedness warning.
2023-01-16 16:38:56 +01:00
Dominik Röttsches
2692b3215b [sfnt] Remove temporary runtime flag for variable 'COLR' v1.
Fixes #1187.

* src/sfnt/ttcolr.c (top level, read_paint, tt_face_load_colr,
tt_face_free_colr, get_deltas_for_var_index_base,
tt_face_get_color_glyph_clipbox, tt_face_get_colorline_stops): Remove macro
definition `VARIABLE_COLRV1_ENABLED` and its usage.

* src/truetype/ttdriver.c (tt_property_set): Remove parsing of
'TEMPORARY-enable-variable-colrv1' property name.

* src/truetype/ttobjs.h (TT_DriverRec): Remove `enable_variable_colrv1`
flag.
2023-01-16 14:02:36 +01:00
Werner Lemberg
b1c90733ee * src/autofit/ft-hb.c (_hb_ft_reference_table): Minor integration fixes. 2023-01-07 07:41:31 +01:00
Ben Wagner
3481b15443 [truetype] Reset cvt and storage in context load.
Currently the cvt and storage are saved and restored in `TT_RunIns`.
However, this is too granular as the cvt and storage area should be set to
the original cvt and storage area only when setting up the hinting context.
This allows for the cvt and storage area to be modified while parsing
multiple glyphs, as is the case with composite glyphs.

* src/truetype/ttinterp.h (TT_ExecContextRec): Remove `origCvt` and
`origStorage`.

* src/truetype/ttinterp.c (TT_RunIns): Don't save and restore the cvt and
storage area.
(Modify_CVT_Check, Ins_WS): Switch from "if in glyph and using original data
do copy on write" to "if in glyph and not using glyph specific data do copy
on write".
2023-01-07 07:28:04 +01:00
Matthias Clasen
ebe7e9128c [autofit] Don't depend on 'hb-ft'.
The circular dependency is still there, but at least we no longer depend on
the HarfBuzz API that is only present if HarfBuzz has been built with
FreeType support, making the bootstrapping a bit easier.

* src/autofit/ft-hb.c, src/autofit/ft-hb.h: New files, providing
`_hb_ft_font_create`, which is more or less a verbatim copy of the
corresponding HarfBuzz code from file `hb-ft.cc`.

* src/autofit/afglobal.c (af_face_globals_new): Use it.
* src/autofit/afshaper.h: Don't include `hb-ft.h` but `ft-hb.h`.
* src/autofit/autofit.c: Include `ft-hb.c`.

* LICENSE.TXT: Updated.
2023-01-06 12:54:17 +01:00
Ben Wagner
262b47ac5a [truetype] Keep variation store consistent.
`tt_var_load_item_variation_store` fills out a `GX_ItemVarStore`.  While it
may return an error, the item store must be left in a consistent state so
that any use or destruction of the item store can properly use or free the
data in it.  Before this change the counts from the font data were read
directly into the item store before the actual allocation of the arrays to
which they referred.  There exist many opportunities between the time the
counts are read and the arrays are allocated to return early due to invalid
data.  When this happened the item store claimed to have entires it actually
did not, leading to crashes later when it was used.

Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54449

* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Read the counts
into local variables and store them in the item store only after the related
arrays are actually created on the item store.
2023-01-06 07:11:41 +01:00
Ben Wagner
15afb55458 [base] Report used stream's external status.
In `open_face` the initial stream is set on the face, along with the
information about if FreeType is the owner of the stream object itself.  The
loaders may in the course of their work replace this stream with a new
stream (as is the case for 'woff' and 'woff2'), which may have a different
ownership than the initial stream object (likely the original stream object
is owned by the user and is external, while the new stream object is created
internally to FreeType and is internal).  When the stream is replaced, the
face's flags are updated with the new ownership status.

However, `open_face` cannot itself free this stream as its caller
`ft_open_face_internal` is responsible for this.  In addition, in the case
of an error `open_face` cannot return an actual face with the new stream and
its ownership status to the caller.  As a result, it must pass this
information back to the caller as a sort of "failed face" so that the caller
can clean up.

`open_face` was already passing back the new stream but was not passing back
the stream ownership information.  As a result the stream may not have been
free'd when needed.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54700

* src/base/ftobjs.c (open_face): Pass back the ownership information as
well.
(ft_open_face_internal): Updated.
2023-01-05 22:05:02 +01:00
Noah Cabral
c0b4f6a862 fix spelling err in LICENSE.txt 2023-01-05 14:58:51 +01:00
Dominik Röttsches
63f371367a [sfnt] Fix color stop bounds check calculation at table end.
Fixes https://bugs.chromium.org/p/skia/issues/detail?id=14021

* src/sfnt/ttcolr.c (VAR_IDX_BASE_SIZE): New macro.
(tt_face_get_colorline_stops): Fix off-by-one bounds check calculation, take
`VarColorStop` into account, and hopefully make it easier to read.
2023-01-05 09:35:32 +01:00
Alexei Podtelezhnikov
81a456b28f * src/base/ftobjs.c (FT_Request_Metrics): Avoid division by zero.
The division-by-zero might happen in broken fonts (see #1194).
Instead of returning a huge number from FT_DivFix and failing
to scale later, we now bail immediately.
2023-01-04 22:41:34 -05:00
Alexei Podtelezhnikov
0bcb664de8 [psaux] Delay the upem validity assertion.
Fixes #1194.

* src/psaux/psft.c (cf2_getUnitsPerEm): Remove the upem assert.
(cf2_checkTransform): Assert the upem validity after checking the scale.
2022-12-20 16:38:39 +00:00
David Vanderson
ace97a02a4 [gzip] Make static compilation not leak global symbols.
* src/gzip/ftgzip.c (HAVE_HIDDEN): Do not define; it is no longer needed
because everything is static.
(HAVE_MEMCPY): Define.
(zcalloc, zcfree): Remove no longer needed definitions (because `Z_SOLO` is
active).

* src/gzip/patches/freetype-zlib.diff: Regenerated.

Fixes #1146.

Co-authored-by: Werner Lemberg <wl@gnu.org>
2022-12-14 10:44:03 +01:00
Werner Lemberg
bc3aa767a7 * src/gzip/ftzconf.h: Updated to zlib 1.2.13.
I forgot to copy that file.
2022-12-14 10:32:53 +01:00
Werner Lemberg
30d4863781 * builds/unix/configure.raw: Don't check for memcpy and memmove.
We expect a C99 compiler, and both functions are part of this standard.
2022-12-14 09:19:26 +01:00
Werner Lemberg
26e9028f10 [sdf, sfnt] Handle minor compiler warnings.
* src/sdf/ftsdf.c (get_min_distance_conic): Initialize `nearest_point`.

* src/sfnt/ttsvg.c (find_doc): Initialize `mid_doc`.

Fixes #1195.
2022-12-13 09:53:26 +01:00
Werner Lemberg
b405fc5c1d * subprojects/zlib.wrap: Micro-update from upstream. 2022-12-07 17:05:17 +01:00
Jiří Malák
34c1bb66e4 * include/freetype/internal/ftcalc.h (FT_MSB): Support Open Watcom 2.0.
Closes !232.
2022-12-06 10:21:53 -05:00
Luca Bacci
aca4ec5907 * src/base/ftdbgmem.c (ft_mem_source_compare): Add FT_COMPARE_DEF.
Closes !230.
2022-11-22 22:34:41 -05:00
Alexei Podtelezhnikov
1c44de209c * src/autofit/afloader.c (af_loader_load_glyph): Remove size check.
This is done by `FT_Load_Glyph`.
2022-11-20 22:37:08 -05:00
Alexei Podtelezhnikov
4e6906cc5d Comments added. 2022-11-18 14:03:19 +00:00
Johan Matsson
0f43a0e7eb * src/autofit/afloader.c (af_loader_load_glyph): Fix dereference.
This must happen after the NULL check.

Taken from

  https://github.com/freetype/freetype/pull/2
2022-11-16 07:54:39 +01:00
Alexei Podtelezhnikov
47e61d02e6 * src/pcf/pcfutil.c ({Two,Four}ByteSwap): Use builtins or shifts.
We trust glibc which uses shifts or builtins to swap bytes.  This
must be more efficient.
2022-11-14 22:53:14 -05:00
Werner Lemberg
e6fda039ad * src/truetype/ttgxvar.c (tt_hvadvance_adjust): Integer overflow.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50462
2022-11-14 19:18:19 +01:00
Loïc Yhuel
63ccaef07a [meson] Use generated ftmodule.h
ftmodule.h is generated at the root of the build directory, but FT_CONFIG_MODULES_H
(freetype/config/ftmodule.h) is used instead.
This makes the build fail when disabling modules in modules.cfg.

* meson.build (harfbuzz_dep): Add '-DFT_CONFIG_MODULES_H=<ftmodule.h>'.
2022-11-14 14:43:04 +01:00
Loïc Yhuel
b37b8d2a70 [meson] Fix generated ftmodule.h
The sdf module wasn't recognized, so the generated ftmodule.h had "None_renderer_class".

* builds/meson/parse_modules_cfg.py: Handle sdf in RASTER_MODULES.
2022-11-14 14:43:04 +01:00
Dominik Röttsches
ba4bd5b994 Add TT_CONFIG_OPTION_NO_BORING_EXPANSION configuration macro.
This gives users a possibility to deactivate new features not (yet) in the
OpenType standard.

* include/freetype/config/ftoption.h, devel/ftoption.h
(TT_CONFIG_OPTION_NO_BORING_EXPANSION): New macro.

* src/truetype/ttgxvar.c (ft_var_load_avar): Use it to disable 'avar'
version 2.0 support.
2022-11-12 17:11:36 +01:00
Behdad Esfahbod
e97cb9e8da [truetype] Improve bounds checks for ItemVariationStore.
* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Move bounds check ...
(tt_var_get_item_delta): ...  to this function, because it is safer.  For
example, the 'avar' table 2.0 codepath was not performing a bounds check at
all.
2022-11-12 16:45:44 +01:00
Behdad Esfahbod
9be958ca39 [truetype] In ItemVariationStore, value 0xFFFF for dataCount is valid.
It corresponds to outer indices of 0 to 0xFFFE.

* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Remove invalid
code.
2022-11-12 16:41:20 +01:00
Alexei Podtelezhnikov
109179c70e [pcf] Improve CMap efficiency and readability.
* src/pcf/pcfdrivr.c (pcf_cmap_char_{index,next}): Check and walk
the encoding array indexes.
2022-11-10 23:25:48 -05:00
Sam James
e82371bf6e Fix -Wstrict-prototypes.
* builds/unix/configure.raw: Fix `-Wstrict-prototypes`.
Clang 16 warns on these and they will be dropped in C23.

* builds/unix/freetype2.m4: Ditto.

Signed-off-by: Sam James <sam@gentoo.org>
2022-11-10 05:38:55 +01:00
Ben Wagner
9154707f6b [truetype] Check avar_segment before access
* src/truetype/ttgxvar.c (tt_done_blend): check `avar_segment` before
accessing to free its `correspondence`.

Reported as:

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53062
2022-11-09 19:15:26 +00:00
Ben Wagner
d38407f79e [truetype] Restore behavior of ft_var_load_hvvar
* src/truetype/ttgcvar.c (ft_var_load_hvvar): restore previous behavior

In a previous change [0] the behavior of `ft_var_load_hvvar` was changed
to not load the item variation store if it was at offset 0, but not
return an error when this happened. This broke any users, like
`tt_hvadvance_adjust`, that rely on successful completion of
`ft_var_load_hvvar` to imply that returned table's `itemStore` had been
initialized. This lead such users to dereference NULL.

This change appears to have been unintentional and unrelated to the
actual avar2 changes. As a result, fix these NULL dereferences by
restoring the code to always attempt to initialize the `itemStore`.

[0] ae4eb996 "[truetype] Add support for `avar` table 2.0 format."

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53061
2022-11-09 19:02:22 +00:00