Commit Graph

7893 Commits

Author SHA1 Message Date
anuj 515bdfef7e [sdf] Use 32-bit integers internally.
* src/sdf/ftsdfcommon.h (FT_16D16, FT_26D6): Use 32-bit integers
  instead of `FT_Fixed` for internal data types. `FT_Fixed` i.e.
  `signed long` is 64-bit on some architectures.
2023-02-07 23:03:23 +00:00
Werner Lemberg d3582e3f8d docs/CHANGES: Updated. 2023-02-07 05:56:12 +01:00
Alexei Podtelezhnikov beb2272949 Comment on optional ascender and descender. 2023-02-04 09:47:44 -05:00
Alexei Podtelezhnikov 1bbec9e993 * src/type1/t1afm.c (T1_Read_Metrics): Reaffirm ascender and descender. 2023-02-04 08:34:58 -05:00
Alexei Podtelezhnikov 82c131accb * src/type1/t1afm.c (T1_Read_Metrics): Validate ascender and descender.
The ascender and descender are optional in the AFM specifications.
They could be omitted or even set to zero, e.g., in the current release
of URW++ base 35 fonts.
2023-02-04 03:20:25 +00:00
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