Commit Graph

3726 Commits

Author SHA1 Message Date
Nikolaus Waxweiler 01ce1c6a99 Change default LCD filter to be normalized and color-balanced.
Update documentation.

* src/base/ftlcdfil.c (FT_Library_SetLcdFilter): Update
`default_filter'.
2015-11-28 12:04:28 +01:00
Werner Lemberg 98afe3f5c8 [docmaker] Allow references to section names.
In the reference, we show the section's title enclosed in single
quotes.

* src/tools/docmaker/formatter.py (Formatter::__init__): Collect
section names as identifiers.

* src/tools/docmaker/tohtml.py (section_title_header): Split into...
(section_title_header1, section_title_header2): ... these two
strings.
(HtmlFormatter::make_block_url, make_html_word, html_source_quote):
Handle sections.
(HtmlFormatter::section_enter): Updated to add `id' HTML attribute.
2015-11-28 11:58:49 +01:00
Werner Lemberg 97b808fdad [docmaker] Allow `foo[bar]' as identifier.
We need this to handle equally named properties in different
modules.

* src/tools/docmaker/content.py (re_identifier),
src/tools/docmaker/sources.py (re_crossref): Allow `foo[bar]'.

* src/tools/docmaker/tohtml.py (HtmlFormatter::make_html_word,
HtmlFormatter::index_exit, HtmlFormatter::section_enter,
HtmlFormatter::block_enter): Handle `foo[bar]'.
2015-11-26 14:29:17 +01:00
Werner Lemberg 4a15013a29 * src/bdf/bdflib.c (bdf_load_font): Fix small memory leak (#46480).
(_bdf_parse_glyphs): Always reset `p->glyph_name' after moving its
contents.
2015-11-25 07:53:49 +01:00
Werner Lemberg b96af12eb6 Add `FT_LCD_FILTER_LEGACY1' enum value.
This does the same as `FT_LCD_FILTER_LEGACY'.

See

  https://bugs.freedesktop.org/show_bug.cgi?id=92981

for the reasoning.

* include/freetype/ftlcdfil.h (FT_LcdFilter): New value
`FT_LCD_FILTER_LEGACY1'.

* src/base/ftlcdfil.c (FT_Library_SetLcdFilter): Use it.
2015-11-20 16:03:09 +01:00
Werner Lemberg 68fb4789a5 * src/autofit/afhints.c (af_get_segment_index): Fix it.
The old code was too simple, returning invalid values in most cases
where a segment crosses the contour start.
2015-11-15 13:06:48 +01:00
Werner Lemberg 94cacac594 * src/bdf/bdflib.c (bdf_load_font): Fix small memory leak (#46439). 2015-11-15 04:45:42 +01:00
Werner Lemberg 75722f8929 [cff, autofit] Switch off stem darkening by default.
* src/autofit/afmodule.c (af_autofitter_init), src/cff/cffobjs.c
(cff_driver_init): Do it.
2015-11-11 09:55:16 +01:00
Jan Alexander Steffens (heftig) ccd3188af1 Allow native CFF hinter in FT_RENDER_MODE_LIGHT.
Both the native CFF hinter and the auto-hinter now have a very
similar rendering style.

* include/freetype/freetype.h: Mention that FT_LOAD_TARGET_LIGHT no
longer implies FT_LOAD_FORCE_AUTOHINT.

* include/freetype/ftmodapi.h (FT_MODULE_DRIVER_HINTS_LIGHTLY): New
macro.

* include/freetype/internal/ftobjs.h (FT_DRIVER_HINTS_LIGHTLY): New
macro.

* src/cff/cffdrivr.c (cff_driver_class): Use it.

* src/base/ftobjs.c (FT_Load_Glyph): Update auto-hinter selection
logic.
2015-11-10 22:33:45 +01:00
Werner Lemberg 2985e4fa30 * src/cid/cidload.c (cid_face_open): Fix GDBytes guard (#46408). 2015-11-09 21:37:40 +01:00
Werner Lemberg 837285e407 [truetype] Remove integer to pointer conversion compiler warning.
Problem reported by Alexei.

* src/truetype/ttgload.c (load_truetype_glyph): Use a solution found
in the glib library to fix the issue.
2015-11-09 09:20:08 +01:00
Behdad Esfahbod abb33121ee [sfnt] Accept version 3 of `EBLC' and `CBLC' tables also.
* src/sfnt/ttsbit.c (tt_face_load_sbit): Implement it.
2015-11-08 10:00:34 +01:00
Philipp Knechtges be32b168ac [autofit] Don't distort (latin) glyphs too much (#46195).
* src/autofit/aflatin.h (AF_LatinBlueRec): Add `ascender' and
`descender' fields.

* src/autofit/aflatin.c (af_latin_metrics_init_blues): Collect
ascender and descender data for blue zones.
(af_latin_metrics_scale_dim): Reject vertical scaling values that
change the result by more than two pixels.
2015-11-08 08:37:51 +01:00
Werner Lemberg 7363414b9d [ftfuzzer] Add copyright notices; do some formatting. 2015-11-07 06:32:46 +01:00
Werner Lemberg 0f0a6bb8aa [sfnt] Ignore embedded bitmaps with zero size (#46379).
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Implement
it.
2015-11-05 13:48:11 +01:00
Werner Lemberg 758d55e522 [truetype] Catch infinite recursion in subglyphs (#46372).
* include/freetype/internal/tttypes.h (TT_LoaderRec): New field
`composites'.

* src/truetype/ttgload.c: Include FT_LIST_H.
(load_truetype_glyph): Add composite subglyph index to a list;
abort if index is already in list.
(tt_loader_init): Updated.
(tt_loader_done): New function.
(TT_Load_Glyph): Call `tt_loader_done'.
2015-11-04 11:44:47 +01:00
Werner Lemberg 040edaf5fb [truetype] Better tracing of composite glyphs.
* src/truetype/ttgload.c (TT_Load_Composite_Glyph,
load_truetype_glyph): Implement it.
2015-11-04 07:35:51 +01:00
Werner Lemberg aae8808780 [sfnt] Protect against zero-size bitmaps (#46345).
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bitmap): Check
`glyph_size'.
2015-11-03 17:30:36 +01:00
Nikolaus Waxweiler b6fd5bc06c * src/autofit/afloader.c (af_loader_load_g): Implement emboldening. 2015-11-03 10:40:58 +01:00
Nikolaus Waxweiler bf2ba9e3d4 [autofit] Implement darkening computation function.
This is a crude adaption of the original `cf2_computeDarkening'
function.

* src/autofit/afloader.c (af_intToFixed, af_fixedToInt,
af_floatToFixed): New macros, taken from `cf2fixed.h'.
(af_loader_compute_darkening): New function.
* src/autofit/afloader.h: Updated.
2015-11-02 13:12:34 +01:00
Nikolaus Waxweiler 37c401ac0a [autofit] Add functions to get standard widths for writing systems.
We need the computed standard horizontal and vertical widths for the
emboldening calculation.  This method provides a convenient way to
extract it from writing-system-specific metrics structures, which
all script definitions must implement.

* src/autofit/aftypes.h (AF_WritingSystem_GetStdWidthsFunc): New
function type.
(AF_WritingSystemClassRec): New member `style_metrics_getstdw'.
(AF_DEFINE_WRITING_SYSTEM_CLASS): Updated.

* src/autofit/afcjk.c (af_cjk_get_standard_width): New function.
(af_cjk_writing_system_class): Updated.
* src/autofit/afdummy.c	(af_dummy_writing_system_class): Updated.
* src/autofit/afindic.c (af_cjk_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
* src/autofit/aflatin.c (af_latin_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
* src/autofit/aflatin.c (af_latin_get_standard_width): New function.
(af_indic_writing_system_class): Updated.
2015-11-02 09:32:26 +01:00
Nikolaus Waxweiler b2a85ad32b [autofit] Extend `AF_FaceGlobalsRec' to hold emboldening data.
* src/autofit/afglobal.h (AF_FaceGlobalsRec): Add fields.

* src/autofit/afglobal.c (af_face_globals_new): Initialize new
fields.
(af_face_globals_free): Reset new fields.
2015-11-02 09:20:32 +01:00
Nikolaus Waxweiler d682e51062 [autofit] Add stem-darkening properties.
Actual code follows in a later commit.

* include/freetype/ftautoh.h: Document `no-stem-darkening' and
`darkening-parameters'.

* src/autofit/afmodule.h: New fields `no_stem_darkening' and
`darken_params'.

* src/autofit/afmodule.c (af_property_set, af_property_get):
Handle them.
(af_autofitter_init): Initialize them.
2015-11-02 09:06:36 +01:00
Werner Lemberg 6bda921da0 [ftfuzzer] Update README file. 2015-11-02 06:53:48 +01:00
Werner Lemberg bcf618b256 [ftfuzzer] Add support for multiple files (patch #8779).
Currently, libFuzzer only supports mutation of a single file.  We
circumvent this problem by using an uncompressed tar archive as
multiple-file input for the fuzzer.

This patch enables tests of `FT_Attach_Stream' and AFM/PFM parsing;
a constructed tarball should contain a font file as the first
element, and files to be attached as further elements.

* src/tools/ftfuzzer/ftfuzzer.cc: Include libarchive headers.
(archive_read_entry_data, parse_data): New functions.
(LLVMFuzzerTestOneInput): Updated.

* src/tools/ftfuzzer/ftmutator.cc: New file, providing a custom
mutator for libFuzzer that can mutate tarballs in a sensible way.
2015-11-02 06:50:49 +01:00
Werner Lemberg 40cb1dc3ac Formatting. 2015-10-31 19:08:27 +01:00
Werner Lemberg 57cbb8c148 [sfnt] Fix cmap 14 validation (#46346).
* src/sfnt/ttcmap.c (tt_cmap14_validate): Check limit before
accessing `numRanges' and `numMappings'.
Fix size check for non-default UVS table.
2015-10-31 18:47:26 +01:00
Werner Lemberg 009cc15035 [sfnt] Handle infinite recursion in bitmap strikes (#46344).
* src/sfnt/ttsbit.c (TT_SBitDecoder_LoadFunc,
tt_sbit_decoder_load_bitmap, tt_sbit_decoder_load_byte_aligned,
tt_sbit_decoder_load_bit_aligned, tt_sbit_decoder_load_png): Add
argument for recursion depth.
(tt_sbit_decoder_load_compound): Add argument for recursion depth.
Increase recursion counter for recursive call.
(tt_sbit_decoder_load_image): Add argument for recursion depth.
Check recurse depth.
(tt_face_load_sbit_image): Updated.
2015-10-31 17:52:56 +01:00
Werner Lemberg 4188deacf3 Comments. 2015-10-30 08:07:56 +01:00
Werner Lemberg 02cfd71498 * src/autofit/afhints.c (af_glyph_hints_dump_points): Minor. 2015-10-29 20:50:57 +01:00
Werner Lemberg fba29fabb3 [pfr] Add some safety guards (#46302).
* src/pfr/pfrload.h (PFR_CHECK): Rename to...
(PFR_CHECK_SIZE): ... this.
(PFR_SIZE): [!PFR_CONFIG_NO_CHECKS]: Define to PFR_CHECK_SIZE.

* src/pfr/pfrload.c (pfr_log_font_count): Check `count'.
(pfr_extra_item_load_kerning_pairs): Remove tracing message.
(pfr_phy_font_load): Use PFR_CHECK_SIZE where appropriate.
Allocate `chars' after doing a size checks.

* src/pfr/pfrsbit.c (pfr_load_bitmap_bits): Move test for invalid
bitmap format to...
(pfr_slot_load_bitmap): ... this function.
Check bitmap size.
2015-10-27 21:04:48 +01:00
Werner Lemberg 4a3fce93c2 [pfr] Formatting, improving comments. 2015-10-27 19:27:39 +01:00
Werner Lemberg 6a19a7d332 [truetype] Fix sanitizing logic for `loca' (#46223).
* src/truetype/ttpload.c (tt_face_load_loca): A thinko caused an
incorrect adjustment of the number of glyphs, most often using far
too large values.
2015-10-26 15:40:22 +01:00
Werner Lemberg 7f00fa6462 [autofit] Improve tracing.
* src/autofit/afhints.c (af_print_idx, af_get_segment_index,
af_get_edge_index): New functions.

(af_glyph_hints_dump_points): Remove unnecessary `|', `[', and `]'.
Add segment and edge index for each point.
Slightly change printing order of some elements.
Don't print `-1' but `--' for missing elements.

(af_glyph_hints_dump_segments, af_glyph_hints_dump_edges): Remove
unnecessary `|', `[', and `]'.
Don't print `-1' but `--' for missing elements.
2015-10-25 10:59:59 +01:00
Werner Lemberg 07f27e1e43 Thinkos and omissions. 2015-10-24 15:22:13 +02:00
Werner Lemberg 6f09011fe6 [sfnt] Sanitize bitmap strike glyph height.
Problem reported by Nikolay Sivov <bunglehead@gmail.com>.

* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Avoid zero value
for `metrics->height' by applying some heuristics.
2015-10-24 10:10:22 +02:00
Werner Lemberg e93d326c8b [sfnt, type42] Fix clang compiler warnings.
* src/sfnt/sfobjs.c (sfnt_init_face): Initialize `offset'.

* src/type42/t42parse.c (t42_parse_sfnts): Use proper cast.
2015-10-22 10:17:20 +02:00
Werner Lemberg f1c93439b9 [cff] Avoid overflow/module arithmetic.
This modifies the addition of subroutine number to subroutine bias
from unsigned to signed, but does not change any results.

* src/cff/cf2ft.c (cf2_initGlobalRegionBuffer,
cf2_initLocalRegionBuffer): Change variable names from (unsigned)
`idx' to (signed) `subrNum', since it is not an index until after
the bias is added.
* src/cff/cf2ft.h: Updated.

* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdCALLSUBR>:
Updated similarly.
2015-10-22 10:11:23 +02:00
Werner Lemberg 59ae73fe16 [cid] Better check of `SubrCount' dictionary entry (#46272).
* src/cid/cidload.c (cid_face_open): Add more sanity tests for
`fd_bytes', `gd_bytes', `sd_bytes', and `num_subrs'.
2015-10-22 09:26:00 +02:00
Werner Lemberg e484d36b2b [base] Pacify compiler (#46266).
* src/base/ftoutln.c (FT_Outline_EmboldenXY): Initialize `in' and
`anchor'.
2015-10-21 20:48:27 +02:00
Werner Lemberg 87fefc594e [type42] Fix heap buffer overflow (#46269).
* src/type42/t42parse.c (t42_parse_sfnts): Fix off-by-one error in
bounds checking.
2015-10-21 20:29:12 +02:00
Dave Arnold 3cfd51233c [cff] Fix limit in assert for max hints.
* src/cff/cf2interp.c (cf2_hintmask_setAll): Allow mask equal to the
limit (96 bits).
2015-10-21 14:07:25 +02:00
Werner Lemberg 3066f5f53d Revert erroneously applied commits. 2015-10-21 14:05:41 +02:00
Dave Arnold 748e368173 [cff] Remove an assert (#46107).
* src/cff/cf2hints.c (cf2_hintmap_insertHint): Ignore paired edges
in wrong order.
2015-10-21 13:58:43 +02:00
Werner Lemberg e6593389cf [sfnt] Avoid unnecessarily large allocation for WOFFs (#46257).
* src/sfnt/sfobjs.c (woff_open_font): Use WOFF's `totalSfntSize'
only after thorough checks.
Add tracing messages.
2015-10-21 08:04:29 +02:00
Werner Lemberg 649ca5562d [type42] Better check invalid `sfnts' array data (#46255).
* src/type42/t42parse.c (t42_parse_sfnts): Table lengths must be
checked individually against available data size.
2015-10-21 07:01:45 +02:00
Werner Lemberg 3eccc3a3f8 [cid] Add a bunch of safety checks.
* src/cid/cidload.c (parse_fd_array): Check `num_dicts' against
stream size.
(cid_read_subrs): Check largest offset against stream size.
(cid_parse_dict): Move safety check to ...
(cid_face_open): ... this function.
Also test length of binary data and values of `SDBytes',
`SubrMapOffset', `SubrCount', `CIDMapOffset', and `CIDCount'.
2015-10-20 22:31:57 +02:00
Werner Lemberg d47d372c96 [cid] Avoid segfault with malformed input (#46250).
* src/cid/cidload.c (cid_read_subrs): Return a proper error code for
unsorted offsets.
2015-10-20 12:24:36 +02:00
Werner Lemberg 3c582060b2 * src/type1/t1afm.c (T1_Read_Metrics): Fix memory leak (#46229). 2015-10-20 06:57:28 +02:00
Bungeman ba8a528b19 [cid] Better handle invalid glyph stream offsets (#46221).
* src/cid/cidgload.c (cid_load_glyph): Check minimum size of glyph
length.
2015-10-19 23:27:06 +02:00
Werner Lemberg 24cee3a8a3 [psaux] Fix tracing of negative numbers.
Due to incorrect casting negative numbers were shown as very large
(positive) integers on 64bit systems.

* src/psaux/t1decode.c (t1_decoder_parse_charstrings) <op_none>:
Use division instead of shift.
2015-10-19 23:00:28 +02:00
Werner Lemberg 5179c89f61 Comments. 2015-10-19 08:49:25 +02:00
Werner Lemberg dcfc4d9c21 [truetype] Better protection against malformed `fpgm' (#46223).
* src/truetype/ttobjs.c (tt_size_init_bytecode): Don't execute a
malformed `fpgm' table more than once.
2015-10-18 16:47:06 +02:00
Werner Lemberg 7643b5839b * src/cid/cidgload.c (cid_load_glyph): Fix memory leak.
Reported by Kostya Serebryany <kcc@google.com>.
2015-10-17 15:51:29 +02:00
Werner Lemberg b185747dd6 [bdf] Prevent memory leak (#46217).
* src/bdf/bdflib.c (_bdf_parse_glyphs) <STARTCHAR>: Check
_BDF_GLYPH_BITS.
2015-10-17 14:21:41 +02:00
Werner Lemberg 797ca5acb5 Typo. 2015-10-17 11:57:16 +02:00
Werner Lemberg e1ca18d449 [bdf] Use stream size to adjust number of glyphs.
* src/bdf/bdflib.c (ACMSG17): New message macro.
(_bdf_parse_t): Add member `size'.
(bdf_load_font): Set `size'.
(_bdf_parse_glyphs): Adjust `cnt' if necessary.
2015-10-17 11:51:27 +02:00
Werner Lemberg 0af21dcf13 * src/cid/cidload.c (cid_parse_dict): Check `[FG]DBytes' size. 2015-10-17 09:29:52 +02:00
Werner Lemberg 38a3dd5566 Typo. 2015-10-17 09:15:37 +02:00
Werner Lemberg 0ba98da472 * src/cid/cidgload.c (cid_glyph_load): Check file offsets (#46222). 2015-10-17 09:11:02 +02:00
Werner Lemberg 8edfcbed53 [psaux] Fix heap buffer overflow (#46221).
* src/psaux/t1decode.c (t1_decoder_parse_charstring) <operator 12>:
Fix limit check.
2015-10-17 08:11:16 +02:00
Werner Lemberg a5ecfb4ce6 * src/cid/cidload.c (cid_parse_dict): Handle invalid input (#46220). 2015-10-17 06:15:55 +02:00
Kostya Serebryany 266976b163 add src/tools/ftfuzzer/README 2015-10-15 22:15:53 -07:00
Bungeman 65d8980491 [bdf] Fix memory leak (#46213).
* src/bdf/bdflib.c (bdf_load_font): Always go to label `Fail' in
case of error.
2015-10-15 23:50:16 +02:00
Werner Lemberg 24a1fcdfce [truetype] Add TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES (#46208).
* devel/ftoption.h, include/freetype/config/ftoption.h
(TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES): New configuration macro.

* src/truetype/ttinterp.c (MAX_RUNNABLE_OPCODES): Removed.
(TT_RunIns): Updated.
2015-10-15 21:50:15 +02:00
Werner Lemberg 837ad9d411 * src/truetype/ttinterp.c (TT_RunIns): Fix bytecode stack tracing.
The used indices were off by 1.
2015-10-15 21:15:45 +02:00
Werner Lemberg 8b76eaf092 * src/tools/ftfuzzer/ftfuzzer.cc: Handle fixed sizes (#46211). 2015-10-15 18:28:43 +02:00
Werner Lemberg e03214e166 [base] Compute MD5 checksums only if explicitly requested.
This improves profiling accuracy.

* src/base/ftobjs.c (FT_Render_Glyph_Internal): Implement it.
2015-10-15 16:58:13 +02:00
Werner Lemberg 6de2a355ff Minor. 2015-10-15 08:40:12 +02:00
Werner Lemberg 2a20c92c4b [base] Use `FT_' namespace for MD5 functions (#42366).
* src/base/ftobjs.c (MD5_*): Define as `FT_MD5_*'.
Undefine HAVE_OPENSSL.
2015-10-14 15:23:15 +02:00
Werner Lemberg 8539915d18 [type1] Correctly handle missing MM axis names (#46202).
* src/type1/t1load.c (T1_Get_MM_Var): Implement it.
2015-10-13 20:43:19 +02:00
Werner Lemberg 58b61b6e05 [pcf] Quickly exit if font index < 0.
Similar to other font formats, this commit makes the parser no
longer check the whole PCF file but only the header and the TOC if
we just want to get the number of available faces (and a proper
recognition of the font format).

* src/pcf/pcfdrivr.c (PCF_Face_Init): Updated.
Exit quickly if face_index < 0.

* src/pcfread.c (pcf_load_font): Add `face_index' argument.
Exit quickly if face_index < 0.

* src/pcf/pcf.h: Updated.
2015-10-13 18:26:18 +02:00
Werner Lemberg bdb56bba86 [ftfuzzer] Handle TTCs and MM/GX variations.
This patch also contains various other improvements.

* src/tools/ftfuzzer/ftfuzzer.cc: Add preprocessor guard to reject
pre-C++11 compilers.
(FT_Global): New class.  Use it to provide a global constructor and
destructor for the `FT_Library' object.
(setIntermediateAxis): New function to select an (arbitrary)
instance.
(LLVMFuzzerTestOneInput): Loop over all faces and named instances.
Also call `FT_Set_Char_Size'.
2015-10-13 11:51:13 +02:00
Werner Lemberg 43a96eb26f [truetype] Refine some GX sanity tests.
Use the `gvar' table size instead of the remaining bytes in the
stream.

* src/truetype/ttgxvar.h (GX_BlendRec): New field `gvar_size'.

* src/truetype/ttgxvar.c (ft_var_load_gvar): Set `gvar_size'.
(ft_var_readpackedpoints, ft_var_readpackeddeltas: New argument
`size'.
(tt_face_vary_cvt, TT_Vary_Apply_Glyph_Deltas): Updated.
2015-10-13 11:18:55 +02:00
Werner Lemberg 052f6c5649 [truetype] Another GX sanity test.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Check
`tupleCount'.
Add tracing message.
2015-10-13 08:24:32 +02:00
Werner Lemberg 7ef0d8661a [truetype] Fix memory leak for broken GX fonts (#46188).
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix scope of
deallocation.
2015-10-13 08:14:20 +02:00
Werner Lemberg f96094eef0 [truetype] Fix commit from 2015-10-10.
* src/truetype/ttgxvar.c (ft_var_load_gvar): Add missing error
handling body to condition.
2015-10-13 07:13:56 +02:00
Werner Lemberg 4f7f6f6e47 [sfnt] Improve extraction of number of named instances.
* src/sfnt/sfobjs.c (sfnt_init_face)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Check number of instances against
`fvar' table size.
2015-10-11 07:55:25 +02:00
Alexei Podtelezhnikov c14ae9c5fd * src/base/ftoutln.c (FT_Outline_Get_Orientation): Fix overflow (#46149). 2015-10-10 22:28:26 -04:00
Werner Lemberg 8de39a7919 [sfnt] Fix infinite loops with broken cmaps (#46167).
* src/sfnt/ttcmap.c (tt_cmap8_char_next, tt_cmap12_next): Take care
of border condidions (i.e., if the loops exit naturally).
2015-10-10 13:34:11 +02:00
Werner Lemberg da34673e54 [truetype] More sanity tests for GX handling.
These tests should mainly help avoid unnecessarily large memory
allocations in case of malformed fonts.

* src/truetype/ttgxvar.c (ft_var_readpackedpoints,
ft_var_readpackeddeltas): Check number of points against stream
size.
(ft_var_load_avar): Check `pairCount' against table length.
(ft_var_load_gvar): Check `globalCoordCount' and `glyphCount'
against table length.
(tt_face_vary_cvt): Check `tupleCount' and `offsetToData'.
Fix trace.
(TT_Vary_Apply_Glyph_Deltas): Fix trace.
Free `sharedpoints' to avoid memory leak.
2015-10-10 10:21:27 +02:00
Werner Lemberg c220d8b498 [truetype] Better protection against malformed GX data (#46166).
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Correctly
handle empty `localpoints' array.
2015-10-10 08:13:04 +02:00
Werner Lemberg d353f6e012 * src/pcf/pcfread.c (pcf_read_TOC): Check stream size (#46162). 2015-10-10 06:54:46 +02:00
Werner Lemberg c12956e700 * src/gzip/ftgzip.c (FT_Stream_OpenGzip): Use real stream size. 2015-10-09 09:38:32 +02:00
Werner Lemberg d98053c997 [pcf] Protect against invalid number of TOC entries (#46159).
* src/pcf/pcfread.c (pcf_read_TOC): Check number of TOC entries
against size of data stream.
2015-10-08 23:17:41 +02:00
Werner Lemberg 06c2d3324e [type42] Protect against invalid number of glyphs (#46159).
* src/type42/t42parse.c (t42_parse_charstrings): Check number of
`CharStrings' dictionary entries against size of data stream.
2015-10-08 21:31:57 +02:00
Werner Lemberg 983b00ec86 [sfnt] Fix some signed overflows (#46149).
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics)
<TT_SBIT_TABLE_TYPE_SBIX>: Use `FT_MulDiv'.
2015-10-08 18:44:45 +02:00
Werner Lemberg 121122416d [type1] Protect against invalid number of subroutines (#46150).
* src/type1/t1load.c (parse_subrs): Check number of
`Subrs' dictionary entries against size of data stream.
2015-10-08 08:55:15 +02:00
Kostya Serebryany dde84f2539 [ftfuzzer] Add support for LLVM's LibFuzzer.
* src/tools/ftfuzzer/ftfuzzer.cc, src/tools/runinput.cc: New files.
2015-10-07 22:18:22 +02:00
Alexei Podtelezhnikov 6eb6158dd7 [smooth] Faster alternative line renderer.
This implementation renders the entire line segment at once without
subdividing it into scanlines.  The main speed improvement comes from
reducing the number of divisions to just two per line segment, which
is a bare minimum to calculate cell coverage in a smooth rasterizer.
Notably, the progression from cell to cell does not itself require any
divisions at all.  The speed improvement is more noticeable at larger
sizes.

* src/smooth/ftgrays.c (gray_render_line): New implementation.
2015-10-06 22:39:54 -04:00
Werner Lemberg 066a49139b [cff] Return correct PS names from pure CFF (#46130).
* src/cff/cffdrivr.c (cff_get_ps_name): Use SFNT service only for
SFNT.
2015-10-06 07:55:32 +02:00
Werner Lemberg 30fe5e762e [base] Replace left shifts with multiplication (#46118).
* src/base/ftglyph.c (ft_bitmap_glyph_bbox, FT_Get_Glyph): Do it.
2015-10-04 13:08:08 +02:00
Werner Lemberg 8cabd919ca * Version 2.6.1 released.
=========================

Tag sources with `VER-2-6-1'.

* docs/VERSION.DLL: Update documentation and bump version number to
2.6.1.

* 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/2.6/2.6.1/, s/26/261/.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.

* builds/unix/configure.raw (version_info): Set to 18:1:12.
* CMakeLists.txt (VERSION_PATCH): Set to 1.

* src/autofit/afmodule.c [AF_DEBUG_AUTOFIT]: Ensure C linking for
dumping functions.
2015-10-04 08:18:01 +02:00
Werner Lemberg b260dc9fab [bzip2, gzip] Avoid access of unitialized memory (#46109).
* src/bzip2/ftbzip2.c (ft_bzip2_file_fill_input), src/gzip/ftgzip.c
(ft_gzip_file_fill_input): In case of an error, adjust the limit to
avoid copying uninitialized memory.
2015-10-04 07:39:22 +02:00
Werner Lemberg 53838ce016 [bzip2, gzip] Avoid access of unitialized memory (#46109).
* src/bzip2/ftbzip2.c (ft_bzip2_file_fill_output), src/gzip/ftgzip.c
(ft_gzip_file_fill_output): In case of an error, adjust the limit to
avoid copying uninitialized memory.
2015-10-03 21:12:25 +02:00
Alexei Podtelezhnikov e2dae8fead [smooth] Clean up worker.
* src/smooth/ftgrays.c (gray_TWorker): Remove never used fields.
2015-10-01 22:03:34 -04:00
Werner Lemberg 90e437e3cd [sfnt] Make `tt_cmap4_char_map_linear' more robust (#46078).
* src/sfnt/ttcmap.c (tt_cmap4_char_map_linear): Take care of
border conditions (i.e., if the loop exits naturally).
2015-10-01 20:00:27 +02:00
Werner Lemberg fab67b85ec * src/autofit/afranges.c (af_deva_nonbase_uniranges): Fix ranges.
They should be a subset of `af_deva_uniranges'.
2015-10-01 16:47:05 +02:00
Werner Lemberg f68bd40836 afranges.c: Add some comments. 2015-10-01 16:43:45 +02:00
Werner Lemberg 5f8f44d218 [sfnt] Make `tt_cmap4_char_map_linear' faster (#46078).
* src/sfnt/ttcmap.c (tt_cmap4_char_map_linear): Use inner loop to
reject too large glyph indices.
2015-10-01 14:16:03 +02:00