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ChangeLog.28
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2017-09-16 Werner Lemberg <wl@gnu.org>
* Version 2.8.1 released.
=========================
Tag sources with `VER-2-8-1'.
* docs/VERSION.TXT: Add entry for version 2.8.1.
* docs/CHANGES: Updated.
* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.8/2.8.1/, s/28/281/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.
* builds/unix/configure.raw (version_info): Set to 21:0:15.
* CMakeLists.txt (VERSION_PATCH): Set to 1.
2017-09-13 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[sfnt] lowest gcc for vectors (e1d0249e) is changed to 4.7.
__builtin_shuffle() was introduced in gcc-4.7. The lowest
gcc to enable vector operation is delayed from 4.6 to 4.7.
* src/sfnt/pngshim.c (premultiply_data): Fix cpp-macro to
enable the vector operation, to change the lowest gcc version
from 4.6 to 4.7.
2017-09-13 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[cache] Fix a possible overflow by signed integer comparison.
Improve the code by 5d3ff05615dda6d1325ed612381a17a0df04c975 ,
issues are found by Behdad Esfahbod and Werner Lemberg.
* src/cache/ftcbasic.c (FTC_ImageCache_Lookup): Replace
a subtraction to check higher bit by a bit operation,
and cpp-conditionalize for appropriate systems. Add better
documentation to the comment.
(FTC_ImageCache_LookupScaler): Ditto.
(FTC_SBitCache_Lookup): Ditto.
(FTC_SBitCache_LookupScaler): Ditto.
2017-09-13 Werner Lemberg <wl@gnu.org>
[autofit] Really fix #41334 (#52000).
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Set
`segment->delta' everywhere.
2017-09-12 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[autofit, sfnt] Fix for `make multi'.
* src/autofit/afshaper.c: Include FT_ADVANCE_H, to use
FT_Get_Advance() in it.
* src/sfnt/ttcmap.c: Include FT_SERVICE_POSTSCRIPT_CMAPS_H
to use PS_Unicodes in it, also include `ttpost.h' to use
tt_face_get_ps_name() in it.
2017-09-11 Azzuro <azzuro@team-mediaportal.com>
[build] Improve builds with different MS Visual Studio versions.
* builds/windows/vc2010/freetype.vcxproj: Switch platform toolset
according to the Visual Studio version.
2017-09-11 Werner Lemberg <wl@gnu.org>
* src/sfnt/ttkern.c (tt_face_load_kern): Reject format 2 tables.
Reported by Behdad.
2017-09-09 Werner Lemberg <wl@gnu.org>
[autofit] Improve communication with ftgrid.
* src/autofit/afhints.c (af_glyph_hints_get_segment_offset):
Provide values in font units.
2017-09-08 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[base] Remove a check for resource ID in the resource fork driver.
LastResort.dfont has a marginal resource ID 0xFFFF for sfnt
resource. Inside Macintosh: More Macintosh Toolbox, `Resource IDs'
(1-46), tells that some IDs are reserved and should not be used.
FreeType2 just uses resource ID to sort the fragmented resource.
To accept the marginal fonts, the checking is removed.
* src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Remove res_id
validity check, fix a trace message format.
2017-09-08 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[sfnt, truetype] Register the tags for marginal fonts.
The first 32bit of standard TrueType variants is 0x00010000,
`OTTO', `ttcf', `true' or `typ1'. 2 marginal dfonts on legacy Mac
OS X, Keyboard.dfont and LastResort.dfont, have the sfnt resources
starting 0xA5 followed by `kbd' or `lst'. Considering the following
data could be parsed as conventional TrueType fonts, the header
checking is updated to allow these tags. It seems that recent Mac
OS X has already switched to normal TTF for these fonts.
See the discussion at
http://u88.n24.queensu.ca/exiftool/forum/index.php?topic=3931.0
* include/freetype/tttags.h (TTAG_0xA5kbd, TTAG_0xA5lst): New header
tags for Keyboard.dfont and LastResort.dfont.
* src/sfnt/sfobjs.c (sfnt_open_font): Accept the sfnt resource
starts with TTAG_0xA5kbd or TTAG_0xA5lst.
* src/truetype/ttobjs.c (tt_face_init): Accept the face with the
format tag is TTAG_0xA5kbd or TTAG_0xA5lst.
2017-09-05 Werner Lemberg <wl@gnu.org>
Fix multiple calls of `FT_Bitmap_Convert'.
The documentation of `FT_Bitmap_Convert' says that multiple calls do
proper reallocation of the target FT_Bitmap object. However, this
failed for the sequence
non-empty bitmap
empty bitmap
non-empty bitmap
Reason was that `FT_Bitmap_Convert' only reallocated the bitmap
buffer if it became too small; it didn't make the buffer smaller.
For an empty bitmap following a non-empty one, only the buffer
dimension got set to zero, without deallocation. If the next call
was a non-empty buffer again, an assertion in `ft_mem_qrealloc' was
triggered.
* src/base/ftbitmap.c (FT_Bitmap_Convert): Always reallocate target
buffer to the correct size.
* docs/CHANGES: Document it.
2017-09-05 Werner Lemberg <wl@gnu.org>
[bdf] Fix size and resolution handling.
* src/bdf/bdfdrivr.c (BDF_Face_Init): Use `SIZE' values if
`POINT_SIZE', `RESOLUTION_X', or `RESOLUTION_Y' properties are
missing.
* docs/CHANGES: Document it.
2017-08-25 Alexei Podtelezhnikov <apodtele@gmail.com>
Swap `ALLOC_MULT' arguments (#51833).
* src/base/ftbitmap.c (ft_bitmap_assure_buffer): Updated.
* src/winfonts/winfnt.c (FNT_Load_Glyph): Updated.
* src/raster/ftrend1.c (ft_raster1_render): Updated.
2017-08-23 Werner Lemberg <wl@gnu.org>
[sfnt] Fix clang compilation (#51788).
* src/sfnt/pngshim.c (premultiply_data): Use vectors instead of
scalars.
(vector_shuffle): New macro to take care of a different built-in
function name on clang.
2017-08-22 Werner Lemberg <wl@gnu.org>
[base] Don't zero out allocated memory twice (#51816).
Patch applied from bug report.
* src/base/ftutil.c (ft_mem_qrealloc): Use low-level allocation to
avoid unnecessary overhead.
2017-08-22 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflow.
Changes triggered by
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3107
* src/truetype/ttinterp.c (Ins_MDRP, Ins_MIRP, Ins_ALIGNPTS): Use
NEG_LONG.
2017-08-17 Alexei Podtelezhnikov <apodtele@gmail.com>
[sfnt] Avoid synthetic unicode for symbol fonts with PUA.
Reported as
https://bugs.chromium.org/p/chromium/issues/detail?id=754574
* src/sfnt/sfobjs.c (sfnt_load_face): Check for FT_ENCODING_MS_SYMBOL.
2017-08-16 Werner Lemberg <wl@gnu.org>
* src/sfnt/pngshim.c (premultiply_data): Fix compiler warnings.
2017-08-15 Behdad Esfahbod <behdad@behdad.org>
[sfnt] Speed up PNG image loading.
This reduces the overhead of `premultiply_data' by 60%.
* src/sfnt/pngshim.c (premultiply_data): Provide code which uses
gcc's (and clang's) `vector_byte' attribute to process 4 pixels at a
time.
2017-08-11 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Improve handling of missing sbits.
Requested by Behdad.
Modern bitmap-only SFNTs like `NotoColorEmoji.ttf' don't contain
entries in the bitmap strike(s) for empty glyphs. Instead, they
rely that a space glyph gets created from the font's metrics data.
This commit makes FreeType behave accordingly.
* include/freetype/fterrdef.h (FT_Err_Missing_Bitmap): New error
code.
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_image): Change error codes
to make a distinction between a missing bitmap in a composite and a
simple missing bitmap.
* src/truetype/ttgload.c (TT_Load_Glyph): For a missing bitmap (in a
bitmap-only font), synthesize an empty bitmap glyph if metrics are
available.
2017-08-10 Werner Lemberg <wl@gnu.org>
[base] Minor API improvement for default variation axis setting.
* src/base/ftmm.c (FT_Set_MM_Design_Coordinates,
FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
FT_Set_Var_Blend_Coordinates): Allow coords==NULL if num_coords==0.
* docs/CHANGES: Updated.
2017-08-08 Werner Lemberg <wl@gnu.org>
[psnames] Really fix issue #49949.
We now use a separate preprocessor macro to handle both definition
and declaration of the glyph name arrays.
* src/psnames/psmodule.c (DEFINE_PS_TABLE_DATA): New macro.
* src/tools/glnames.py (StringTable::dump,
StringTable::dump_sublist): Use `DEFINE_PS_TABLE_DATA'.
(dump_encoding): Ditto.
(main): Use `wb' mode for writing the output file, which works on
Windows also.
* src/psnames/pstables.h: Regenerated.
2017-08-08 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Harmony LCD rendering.
This is a new technology for LCD-optimized rendering. It capitalizes
on the fact that each color channel grid is shifted by a third of a
pixel. Therefore it is logical to render 3 separate monochrome
bitmaps shifting the outline by 1/3 pixel, and then combine them.
Importantly, the resulting output does not require additional LCD
filtering.
* src/smooth/ftsmooth.c (ft_smooth_render_generic)
[!FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Implement new LCD-optimized
rendering.
* include/freetype/ftlcdfil.h, include/freetype/freetype.h,
include/freetype/config/ftoption.h, devel/ftoption.h: Updated
documentation.
2017-08-08 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Clean up.
2017-08-08 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/sfnt/ttpost.c (format): Use otspec-compliant versions.
2017-08-05 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2868
* src/truetype/ttinterp.c (Ins_ALIGNRP): Use NEG_LONG.
2017-08-05 Werner Lemberg <wl@gnu.org>
[base, truetype] New function `FT_Get_Var_Axis_Flags'.
The reserved `flags' field got a value in OpenType version 1.8.2;
unfortunately, the public `FT_Var_Axis' structure misses the
corresponding element. Since we can't add a new field, we add an
access function.
* src/base/ftmm.c (FT_Get_Var_Axis_Flags): New function.
* include/freetype/ftmm.h (FT_VAR_AXIS_FLAG_HIDDEN): New macro.
Updated.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Increase allocated memory
of `mmvar' to hold axis flags.
Fill the axis flags array.
* docs/CHANGES: Updated.
2017-08-03 Nikolaus Waxweiler <madigens@gmail.com>
[truetype] Fix metrics of B/W hinting in v40 mode.
Phantom points are now saved outside v40 backwards compatibility
mode. This fixes the jumping glyphs when switching between v35 and
v40 monochrome mode.
* src/truetype/ttgload.c (TT_Hint_Glyph): Fix inversed bool logic.
2017-08-03 Nikolaus Waxweiler <madigens@gmail.com>
[truetype] Do not set any ClearType flags in v40 monochrome mode.
This fixes weird behavior of instructions that resulted in rendering
differences between v35 and v40 in monochrome mode, e.g., in
`timesbi.ttf'.
* src/truetype/ttinterp.c (Ins_GETINFO)
[TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL]: Check
`subpixel_hinting_lean'.
2017-08-01 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Fix thinko.
2017-08-01 Behdad Esfahbod <behdad@behdad.org>
[truetype] Fix loading of named instances.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Preserve file position
while loading the `avar' table.
2017-08-01 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Minor adjustments for OpenType 1.8.2.
* src/sfnt/sfobjs.c (sfnt_load_face): The units per EM value has now
(tighter) limits.
* src/truetype/ttgload.c (load_truetype_glyph): The new OpenType
version explicitly allows all negative values for the number of
contours if we have a composite glyph (this is for better backwards
compatibility I guess), but it still recommends value -1.
2017-07-26 Werner Lemberg <wl@gnu.org>
[cff] Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2738
* src/cff/cf2hints.c (cf2_glyphpath_computeOffset,
cf2_glyphpath_curveTo): Use ADD_INT32.
2017-07-13 Werner Lemberg <wl@gnu.org>
[base] Fix memory leak.
Reported as
https://bugs.chromium.org/p/chromium/issues/detail?id=738362
* src/base/ftglyph.c (FT_Get_Glyph): Do proper deallocation in case
of error.
2017-07-12 Werner Lemberg <wl@gnu.org>
[base] Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2573
* src/base/ftobjs.c (ft_glyphslot_grid_fit_metrics): Use
FT_PIX_CEIL_LONG and FT_PIX_ROUND_LONG.
2017-07-12 Werner Lemberg <wl@gnu.org>
* src/truetype/ttpload.c (tt_face_get_location): Off-by-one typo.
Also improve tracing message.
Problem reported as
https://bugs.chromium.org/p/chromium/issues/detail?id=738919
2017-07-07 Werner Lemberg <wl@gnu.org>
[cff] Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2517
* src/cff/cf2blues.c (cf2_blues_capture): Use SUB_INT32.
2017-07-05 Werner Lemberg <wl@gnu.org>
* src/sfnt/ttcmap.c (tt_cmap_unicode_class_rec): Fix warning.
2017-07-05 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (FT_Stream_SeekSet): Fix warning (#51395).
2017-07-04 Werner Lemberg <wl@gnu.org>
[truetype] Prevent address overflow (#51365).
* src/truetype/ttgxvar.c (FT_Stream_SeekSet): Add guard.
2017-07-03 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftlcdfil.c (ft_lcd_filter_fir): Improve code.
2017-07-03 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2455
* src/truetype/ttinterp.c (Ins_SCFS): Use SUB_LONG.
2017-07-01 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/sfnt/sfobjs.c (sfnt_load_face): Ignore No_Unicode_Glyph_Name.
2017-06-28 Ben Wagner <bungeman@google.com>
Avoid Microsoft compiler warnings (#51331).
While clang's sanitizer recommends a cast to unsigned for safe
negation (to handle -INT_MIN), both MSVC and Visualc emit warning
C4146 if an unsigned value gets negated.
* include/freetype/internal/ftcalc.h (NEG_LONG, NEG_INT32),
src/base/ftcalc.c (FT_MOVE_SIGN): Replace negation with a
subtraction.
2017-06-27 Werner Lemberg <wl@gnu.org>
* src/cff/cffparse.c (do_fixed): Fix typo.
Spotted by chris <chris@gcjd.org>.
2017-06-27 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2384
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2391
* src/base/ftcalc.c (FT_MulDiv, FT_MulDiv_No_Round, FT_DivFix): Use
NEG_LONG.
* src/truetype/ttinterp.c (Ins_SxVTL): Use NEG_LONG.
2017-06-24 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2364
* src/truetype/ttinterp.c (Ins_ISECT): Use NEG_LONG.
2017-06-22 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2323
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2328
* src/cff/cf2blues.c (cf2_blues_capture): Use ADD_INT32 and
SUB_INT32.
* src/truetype/ttinterp.c (Ins_SDPVTL): Use SUB_LONG and NEG_LONG.
2017-06-21 Alexei Podtelezhnikov <apodtele@gmail.com>
[sfnt] Synthesize a Unicode charmap if one is missing.
* src/sfnt/ttcmap.h (tt_cmap_unicode_class_rec): Declare it.
* src/sfnt/ttcmap.c (tt_get_glyph_name, tt_cmap_unicode_init,
tt_cmap_unicode_done, tt_cmap_unicode_char_index,
tt_cmap_unicode_char_next, tt_cmap_unicode_class_rec): Implement
synthetic Unicode charmap class.
(tt_get_cmap_info): Make sure the callback is available.
* src/sfnt/sfobjs.c (sfnt_load_face)
[FT_CONFIG_OPTION_POSTSCRIPT_NAMES]: If Unicode charmap is missing,
synthesize one.
* include/freetype/config/ftoption.h: Document it.
* devel/ftoption.h: Ditto.
2017-06-20 Tony Theodore <tonyt@logyst.com>
Fix pkg-config in freetype-config for cross-compiling (#51274).
* builds/unix/unix-def.in (PKG_CONFIG): New variable.
(freetype-config): Use it in sed expression.
* builds/unix/freetype-config.in: s/pkg-config/%PKG_CONFIG%/.
2017-06-20 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2300
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2313
* src/cff/cf2hints.c (cf2_hintmap_adjustHints): Use ADD_INT32.
* src/truetype/ttinterp.c (Ins_ABS): Avoid FT_ABS.
2017-06-17 Alexei Podtelezhnikov <apodtele@gmail.com>
[base, smooth] LCD filtering cleanups.
* src/base/ftlcdfil.c (ft_lcd_filter_fir, _ft_lcd_filter_legacy):
Clean up, start filtering from the bottom-left origin.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Updated.
2017-06-16 Werner Lemberg <wl@gnu.org>
[truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2270
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2276
* src/truetype/ttinterp.c (Ins_MDRP, _iup_worker_interpolate): Use
ADD_LONG and SUB_LONG.
2017-06-15 Werner Lemberg <wl@gnu.org>
[bdf, cff] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2244
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2261
* src/bdf/bdfdrivr.c (BDF_Face_Init): Replace calls to FT_ABS with
direct code to avoid value negation.
* src/cff/cf2blues.c (cf2_blues_capture): Use SUB_INT32 and
ADD_INT32.
2017-06-13 Werner Lemberg <wl@gnu.org>
* src/winfonts/winfnt.c (FNT_Face_Init): Don't set active encoding.
FreeType only sets a default active encoding for Unicode.
2017-06-13 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2216
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2218
* src/cff/cf2fixed.h (cf2_fixedAbs): Use NEG_INT32.
* src/truetype/ttinterp.c (Ins_IP): Use SUB_LONG.
2017-06-11 Werner Lemberg <wl@gnu.org>
[cff] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2200
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2210
* src/cff/cf2hints.c (cf2_hintmap_insertHint): Use SUB_INT32 and
ADD_INT32.
* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdVMOVETO>: Use
ADD_INT32.
2017-06-10 Werner Lemberg <wl@gnu.org>
[truetype] Fix TT_Set_Var_Design.
Reported by Nikolaus Waxweiler <madigens@gmail.com>.
* src/truetype/ttgxvar.c (TT_Set_Var_Design): Correctly handle the
case where we have less input coordinates than axes.
2017-06-10 Werner Lemberg <wl@gnu.org>
* src/base/ftcalc.c (FT_DivFix): Fix embarrassing typo.
Bug introduced 2017-05-28.
2017-06-09 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2144
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2151
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2153
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2173
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2186
* src/cff/cf2blues.c (cf2_blues_init): Use SUB_INT32.
* src/truetype/ttinterp.c (Round_None, Round_To_Grid,
Round_To_Half_Grid, Round_Down_To_Grid, Round_Up_To_Grid,
Round_To_Double_Grid, Round_Super, Round_Super_45): Use ADD_LONG,
SUB_LONG, NEG_LONG, FT_PIX_ROUND_LONG, FT_PIX_CEIL_LONG,
FT_PAD_ROUND_LONG
(Ins_SxVTL, Ins_MIRP): Use SUB_LONG.
(_iup_worker_shift): Use SUB_LONG and ADD_LONG.
2017-06-09 Werner Lemberg <wl@gnu.org>
Provide more macros for flooring, ceiling, and rounding.
These versions don't produce run-time errors due to integer
overflow.
* include/freetype/internal/ftobjs.h: Include FT_INTERNAL_CALC_H.
(FT_PAD_ROUND_LONG, FT_PAD_CEIL_LONG, FT_PIX_ROUND_LONG,
FT_PIX_CEIL_LONG): New macros.
(FT_PAD_ROUND_INT32, FT_PAD_CEIL_INT32, FT_PIX_ROUND_INT32,
FT_PIX_CEIL_INT32): New macros.
2017-06-09 Werner Lemberg <wl@gnu.org>
Remove unused macros.
* include/freetype/internal/ftcalc.h (ADD_INT, SUB_INT, MUL_INT,
NEG_INT): Deleted.
2017-06-09 Werner Lemberg <wl@gnu.org>
*/*: Remove `OVERFLOW_' prefix.
This increases readability.
2017-06-07 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2133
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2137
* src/cff/cf2hints.c (cf2_hint_init): Use OVERFLOW_SUB_INT32.
* src/truetype/ttinterp.c (PROJECT, DUALPROJ): Use
OVERFLOW_SUB_LONG.
2017-06-06 Werner Lemberg <wl@gnu.org>
[cff] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2109
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2110
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2122
* src/cff/cf2blues.c (cf2_blues_init): Use OVERFLOW_SUB_INT32.
* src/cff/cf2hints.c (cf2_hintmap_map): Synchronize if-else
branches.
2017-06-05 Werner Lemberg <wl@gnu.org>
[cff] Integer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2089
* src/cff/cffload.c (cff_blend_doBlend): User OVERFLOW_ADD_INT32.
2017-06-04 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2075
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2088
* src/cff/cf2font.c (cf2_font_setup): Use OVERFLOW_MUL_INT32.
* src/truetype/ttinterp.c (Ins_ISECT): Use OVERFLOW_MUL_LONG,
OVERFLOW_ADD_LONG, and OVERFLOW_SUB_LONG.
2017-06-03 Werner Lemberg <wl@gnu.org>
[base, cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2060
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2062
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2063
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2068
* src/base/ftobjs.c (ft_glyphslot_grid_fit_metrics): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG.
* src/cff/cf2blues.c (cf2_blues_capture), src/cff/cf2hints.c
(cf2_hintmap_adjustHints): Use OVERFLOW_SUB_INT32.
* src/truetype/ttgload.c (compute_glyph_metrics): User
OVERFLOW_SUB_LONG.
* src/truetype/ttinterp.c (Direct_Move, Direct_Move_Orig,
Direct_Move_X, Direct_Move_Y, Direct_Move_Orig_X,
Direct_Move_Orig_Y, Move_Zp2_Point, Ins_MSIRP): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG.
2017-06-03 Werner Lemberg <wl@gnu.org>
* builds/unix/freetype-config.in: Fix pkg-config test (#51162).
Patch directly taken from bug report.
2017-06-03 Werner Lemberg <wl@gnu.org>
[bdf] Synchronize sanity checks with pcf driver.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2054
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2058
* src/bdf/bdfdrivr.c (BDF_Face_Init): Check font ascent and descent.
Check AVERAGE_WIDTH, POINT_SIZE, PIXEL_SIZE, RESOLUTION_X, and
RESOLUTION_Y properties.
2017-06-03 Werner Lemberg <wl@gnu.org>
[cff, truetype] Integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2047
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2057
* src/cff/cf2hints.c (cf2_hintmap_map): Use OVERFLOW_SUB_INT32.
* src/truetype/ttinterp.c (Ins_ADD): Use OVERFLOW_ADD_LONG.
(Ins_SUB): Use OVERFLOW_SUB_LONG.
(Ins_NEG): Use NEG_LONG.
2017-06-03 Werner Lemberg <wl@gnu.org>
ftcalc.h: Avoid left-shift of negative numbers.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2055
* include/freetype/internal/ftcalc.h (INT_TO_F26DOT6,
INT_TO_F2DOT14, INT_TO_FIXED, F2DOT14_TO_FIXED): Use multiplication.
2017-06-02 Werner Lemberg <wl@gnu.org>
[cff] Even more integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2046
* src/cff/cf2intrp.c (cf2_doStems, cf2_interpT2CharString): Use
OVERFLOW_ADD_INT32.
2017-06-02 Werner Lemberg <wl@gnu.org>
[cff] More integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2032
* src/cff/cf2blues.c (cf2_blues_init): Use OVERFLOW_SUB_INT32.
2017-06-02 Werner Lemberg <wl@gnu.org>
[bdf] Don't left-shift negative numbers.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2031
* src/bdf/bdfdrivr.c (BDF_Face_Init): Use multiplication.
2017-06-02 Werner Lemberg <wl@gnu.org>
[bdf] Fix integer scanning routines.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2029
* src/bdf/bdflib.c (_bdf_atoul, _bdf_atol, _bdf_atous, _bdf_atos):
Stop scanning if result would overflow.
2017-06-02 Werner Lemberg <wl@gnu.org>
[cff] Fix integer overflows.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2027
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2028
* src/cff/cf2hints.c (cf2_hintmap_insertHint), src/cff/cf2intrp.c
(cf2_doFlex): Use OVERFLOW_ADD_INT32 and OVERFLOW_SUB_INT32.
2017-06-01 Werner Lemberg <wl@gnu.org>
[smooth] Some 32bit integer overflow run-time errors.
* src/smooth/ftgrays.c [STANDALONE] (OVERFLOW_ADD_LONG,
OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG, NEG_LONG): New macros.
[!STANDALONE]: Include FT_INTERNAL_CALC_H.
(gray_render_cubic): Use those macros where appropriate.
2017-06-01 Werner Lemberg <wl@gnu.org>
* src/base/ftglyph.c (FT_Get_Glyph): Check `slot->advance'.
2017-06-01 Werner Lemberg <wl@gnu.org>
[psaux] 32bit integer overflow tun-time errors (#46149).
* src/psaux/t1decode.c (t1_decoder_parse_charstrings): Use
OVERFLOW_ADD_LONG and OVERFLOW_SUB_LONG where appropriate.
2017-06-01 Werner Lemberg <wl@gnu.org>
* src/truetype/ttinterp.c (TT_RunIns): Adjust loop counter again.
Problem reported by Marek Kašík <mkasik@redhat.com>.
The problematic font that exceeds the old limit is Padauk-Bold,
version 3.002, containing bytecode generated by a buggy version of
ttfautohint.
2017-05-31 Werner Lemberg <wl@gnu.org>
[cff] 32bit integer overflow run-time errors 2/2 (#46149).
This commit handles the new engine.
* include/freetype/internal/ftcalc.h (OVERFLOW_ADD_INT32,
OVERFLOW_SUB_INT32, OVERFLOW_MUL_INT32, NEG_INT, NEG_LONG,
NEG_INT32): New macros.
* src/cff/cf2ft.c (cf2_getScaleAndHintFlag): Use OVERFLOW_ADD_INT32.
* src/cff/cf2hints.c (cf2_getWindingMomentum, cf2_hint_init,
cf2_hintmap_map, cf2_glyphpath_hintPoint,
cf2_glyphpath_computeIntersection, cf2_glyphpath_computeOffset,
cf2_glyphpath_lineTo, cf2_glyphpath_curveTo): Use
OVERFLOW_ADD_INT32, OVERFLOW_SUB_INT32, OVERFLOW_MUL_INT32, and
NEG_INT32 where appropriate.
* src/cff/cf2intrp.c (cf2_doFlex, cf2_doBlend,
cf2_interpT2CharString): Ditto.
Also add some other code where needed to avoid overflow.
2017-05-30 Werner Lemberg <wl@gnu.org>
[cff] 32bit integer overflow run-time errors 1/2 (#46149).
This commit handles the old engine.
* src/cff/cffgload.c: Include FT_INTERNAL_CALC_H.
(cff_decoder_parse_charstrings): Use OVERFLOW_ADD_LONG and
OVERFLOW_SUB_LONG where needed.
* src/cff/cffparse.c: Include FT_INTERNAL_CALC_H.
(power_ten_limits): New static array.
(do_fixed): Use it to prevent multiplication overflow.
(cff_parser_run): Use OVERFLOW_ADD_LONG.
2017-05-30 Werner Lemberg <wl@gnu.org>
[psaux] Correctly handle sequences of multiple number signs.
* src/psaux/psconv.c (PS_Conv_Strtol, PS_Conv_ToFixed): Return zero
if we encounter more than a single sign.
2017-05-29 Werner Lemberg <wl@gnu.org>
[pcf] 32bit integer overflow run-time errors (#46149).
* src/pcf/pcfread.c (pcf_get_accel): Add sanity checks for
`fontAscent' and `fontDescent'.
(pcf_load_font): Add sanity checks for global height.
Add sanity checks for AVERAGE_WIDTH, POINT_SIZE, PIXEL_SIZE,
RESOLUTION_X, and RESOLUTION_Y properties.
2017-05-29 Werner Lemberg <wl@gnu.org>
Handle some integer overflow run-time errors (#46149, #48979).
This commit (mainly for 32bit CPUs) is the first of a series of
similar commits to handle known integer overflows. Basically, all
of them are harmless, since they affect rendering of glyphs only,
not posing security threats. It is expected that fuzzying will show
up more overflows, to be fixed in due course.
The idea is to mark places where overflows can occur, using macros
that simply cast to unsigned integers, because overflow arithmetic
is well defined in this case. Doing so suppresses run-time errors
of sanitizers without adding computational overhead.
* include/freetype/internal/ftcalc.h (OVERFLOW_ADD_INT,
OVERFLOW_SUB_INT, OVERFLOW_MUL_INT, OVERFLOW_ADD_LONG,
OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG): New macros.
* src/base/ftcalc.c (FT_RoundFix, FT_CeilFix, FT_Matrix_Multiply,
FT_Matrix_Multiply_Scaled, FT_Vector_Transform_Scaled,
ft_corner_orientation): Use new macros.
* src/base/ftoutln.c (FT_Outline_Get_Orientation): Use new macros.
2017-05-28 Werner Lemberg <wl@gnu.org>
* include/freetype/internal/ftcalc.h (FLOAT_TO_FIXED): Remove.
This macro is not used.
2017-05-28 Werner Lemberg <wl@gnu.org>
[cff] s/cf2_floatToFixed/cf2_doubleToFixed/.
The new name better describes what the macro actually does;
additionally, we don't need a trailing `f' for literals (there was
only a single such instance in the code, but this caused a clang
warning because the macro itself uses `double' literals).
* src/cff/cf2blues.c, src/cff/cf2blues.h, src/cff/cf2fixed.h,
src/cff/cf2font.c, src/cff/cf2hints.c: Updated.
2017-05-28 Werner Lemberg <wl@gnu.org>
Fix negation of INT_MIN and LONG_MIN (#46149).