AuroraMiddleware/harfbuzz
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446d1e3bbc
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1491 Commits

Author SHA1 Message Date
Ebrahim Byagowi
446d1e3bbc [fuzz] Add more of fixed cases 2020-03-05 00:49:03 +03:30
Ebrahim Byagowi
99b5b3f1b1 [gvar] Make sure TupleVarHeader has the needed size 
Fixes https://crbug.com/oss-fuzz/21026
 2020-03-04 12:43:26 +03:30
Ebrahim Byagowi
558f922788 [fuzz] Avoid empty memcpy and ubsan complain by length checking before memcpy 2020-03-03 21:39:22 +03:30
Ebrahim Byagowi
6543d166fd [fuzz] Remove the not yet fixed timeout, going to investigate 2020-03-03 21:39:22 +03:30
Ebrahim Byagowi
2bbf1c8673 [fuzz] Add more of supposed to already be fixed cases from Chromium bug tracker 2020-03-03 21:39:22 +03:30
Ebrahim Byagowi
f253f06cf3 [fuzz] Add another fixed case 
https://crbug.com/oss-fuzz/14626

another numerous subtables count which is fixed by d38360397
 2020-03-03 19:12:04 +03:30
Ebrahim Byagowi
d383603976
Limit OT::Lookup subtables (#2219) 
Fixes https://crbug.com/oss-fuzz/13943
 2020-03-02 22:41:08 +03:30
Ebrahim Byagowi
29efd964f2
[fuzz] Add cases that marked as wontfix 
Let's see if they were really false alarms, if so, let's just have them.
 2020-03-02 14:22:29 +03:30
Ebrahim Byagowi
cb65150fec
[draw] minor 2020-02-29 16:12:54 +03:30
Ebrahim Byagowi
44169f3396
[draw] Fix invalid rendering of some glyph on Estedad-VF 
Basically reverts 11f3fca so I can do the same tested and better later

Fixes #2215
 2020-02-29 16:04:03 +03:30
Ebrahim Byagowi
86c40b3a1d [fuzz/draw] Call _get_glyph_extents 
Other render related APIs also may be added also later such
as ot-color and future rendering things.
 2020-02-29 14:53:34 +03:30
Michiharu Ariza
5ab50eebd7
collect_unicodes() with clamp, calling add_range() 
Use add_range instead an inner loop, clamp its input number by
number of glyphs a face has.

Even the face cmap12 and 13 have 32-bit hb_codepoint_t, which is here
used to make timeout, face's maxp has 16-bit gid limitation at least for now,
using that makes sure we both fix and the timeout and don't need to change
much things here also in order to support 32-bit gids also someday.

Fixes #2204
 2020-02-29 13:02:29 +03:30
Garret Rieger
410b4881d0 [subset] Add fuzzer timeout testcase. 2020-02-28 16:10:14 -08:00
Ebrahim Byagowi
e57ced5fc0
[gvar] Add other possibly fixed fuzzer case 
Speculatively should've been fixed by 61208401

https://crbug.com/oss-fuzz/20924 related
 2020-02-28 23:29:05 +03:30
Ebrahim Byagowi
758fda728b
[glyf] Don't accept gids higher than maxp's glyphs number 
This specially becomes concerning on sub-components where a gvar table
that is sanitized using maxp's glyphs number overflows when a high gid
accepted here goes to it, maybe an additional check can be put there
also, this however feels to be enough.

Fixes https://crbug.com/oss-fuzz/20944
 2020-02-28 23:19:06 +03:30
Ebrahim Byagowi
e90213868b Revert "collect_unicodes() to check gid < num_glyphs with cmap 12" 
Didn't fix the case actually, making bots to fail.

This reverts commit 15b43a4104.
 2020-02-28 21:24:51 +03:30
Ebrahim Byagowi
61208401f4
[gvar] Use hb_bytes_t.check_range instead having in house one 
And use TupleVarHeader calculated size for validity check.

Fixes https://crbug.com/oss-fuzz/20919 and possibly other gvar related issues
 2020-02-28 21:09:07 +03:30
Michiharu Ariza
15b43a4104
collect_unicodes() to check gid < num_glyphs with cmap 12 
fixes #2204
 2020-02-28 20:15:39 +03:30
Ebrahim Byagowi
868ecf7b26 [draw] Add fuzzer runner 2020-02-28 19:57:56 +03:30
Ebrahim Byagowi
8eba66c1c6 [gvar] Fix invalid memory access by refactoring GlyphVarData fetch logic 
Fixes https://crbug.com/oss-fuzz/20906
 2020-02-27 20:26:54 +03:30
Qunxin Liu
5ad761b943 [subset] GDEF MarkGlyphSets subsetting support 2020-02-26 15:15:21 -08:00
Qunxin Liu
fcd7f33bbb [subset] GDEF glyphClassDef subsetting support 
glyphClassDef uses the same ClassDef format. However, glyphClassDef table
uses predefined class values so we do not remap class values.
 2020-02-26 11:10:31 -08:00
ariza
a99134c5be add oss-fuzz 20886 test file 2020-02-26 09:58:03 -08:00
Ebrahim Byagowi
1b8b863898 minor 2020-02-26 16:36:48 +03:30
Ebrahim Byagowi
132fcfbc47 [fuzz] minor don't abort main.cc when the file was empty or not found 2020-02-26 16:15:17 +03:30
Ebrahim Byagowi
84163c83d3 [draw] Skip commands and paths not contributing anything 
They aren't contributing to rendering and making issue for stroking, let's skip them
ourselves as Skia does also https://skia-review.googlesource.com/c/skia/+/268166

They are useful for extracting extents and so which that functionality won't be effected by this change.
 2020-02-26 16:09:28 +03:30
Michiharu Ariza
c400cb8863
Re-implement hb_set_t::del_range (#2194) 
* optimize hb_set_del_range()

fix issue #2193

* fixed bug & added tests

* coding & comment tweaks
 2020-02-25 16:06:03 -08:00
ariza
4081439d2a tweak reflecting review & add test cases 2020-02-25 15:03:12 -08:00
Ebrahim Byagowi
152000d9c7 [fuzz] Practice variations on font object 2020-02-25 21:16:57 +03:30
Ebrahim Byagowi
036d868913 [draw] Add a fuzzer 
Specially checks correctness of the API semantics:
* no move happens when a path is already opened with move-to.
* no path will be left open and close-path will happen at the end of opened paths.
* no path opens with a move-to and will be closed with no length.
* paths start and ending points matches.
* no line/quadratic/cubic command will be issued when no path is started.
 2020-02-25 19:09:44 +03:30
ariza
173b745da8 fixed bug & added tests 2020-02-24 22:56:57 -08:00
ariza
a5012e97c4 optimize hb_set_del_range() 
fix issue #2193
 2020-02-24 17:09:48 -08:00
Ebrahim Byagowi
96b71e802f [fuzz] make the custom loader to handle multiple files 
Actually this was the way it used to work :)
 2020-02-24 23:01:02 +03:30
Ebrahim Byagowi
1f5a54c768 [gvar] fix infinite loop introduced by 11f3fca 
The attempt on removing end_points had made the code unreadable
and has intrdouced infinite, fixed by making the code clear what
it tries to achieve.
 2020-02-24 14:30:07 +03:30
Ebrahim Byagowi
e17fd0d91c [tools] More on py3 compatibility 2020-02-24 00:10:11 +03:30
Ebrahim Byagowi
0cf050a7b1 [draw] Merge consequent move-to commands of CFF/CFF2 2020-02-23 23:23:50 +03:30
Ebrahim Byagowi
86bd5a0ba1 [draw] End CFF paths with a line-to 
Issue a line-to command when start and end point of a path isn't same, matches freetype also.
 2020-02-23 23:23:50 +03:30
Garret Rieger
411225426f Fix glyph closure for alternate substitution. 
It was not filtering on the glyphs to be retained.
 2020-02-21 13:01:23 +03:30
Ebrahim Byagowi
8c652f72fc Minor, switch to https links where possible 2020-02-19 16:32:44 +03:30
Ebrahim Byagowi
8d19907704 Remove python2 support from tests/utils scripts 2020-02-19 16:17:45 +03:30
Qunxin Liu
493e40ff78 [subset] add one empty byte to glyf table 
if it's going to end up empty after subsetting
This will make OTS happy and match what fontTools is doing now.
 2020-02-19 12:24:38 +03:30
Ebrahim Byagowi
60f8f384f9 [glyf] Switch to ttf-parser's glyf to path algorithm 
It consumes each point at a time and doesn't need to know contour size before hand
 2020-02-18 00:49:09 +03:30
Ebrahim Byagowi
a94d1af193 [fuzz] minor style fixes 2020-02-12 19:30:31 +03:30
Ebrahim Byagowi
1c015d3e9f [fuzz] minor fuzzer case move, oops 2020-02-12 19:19:37 +03:30
Ebrahim Byagowi
49341faee2 [fuzz] minor, move two fuzzer cases to their correct place 2020-02-12 19:17:18 +03:30
Ebrahim Byagowi
97229244eb [fuzzer] Fix hb-set-fuzzer minor overflow issue 
Size shouldn't be smaller than the struct not its pointer size.

Fixes https://crbug.com/oss-fuzz/20655
 2020-02-12 15:41:51 +03:30
Garret Rieger
7b42403c1c Add explicit values to the set fuzzer enums. 2020-02-11 13:25:44 -08:00
Garret Rieger
e805923310 Add a few basic seeds for the set fuzzer. 2020-02-11 13:25:44 -08:00
Ebrahim Byagowi
ff984ed3cd Use multiplication to avoid undefined behaviour per clang 
Newer versions of MSVC with /we4146 don't like putting negative sign behind a
unsigned number as https://github.com/harfbuzz/harfbuzz/pull/2069
That however have made https://crbug.com/1050424 this complain:
  src/hb-ot-color-sbix-table.hh:304:28: runtime error: negation of -2147483648 cannot be represented in type 'int';
                                        cast to an unsigned type to negate this value to itself
which apparently can be fixed using this change.

Let's see if this won't make another ubsan complain!
 2020-02-11 19:51:52 +03:30
Garret Rieger
bca9bc6b92 Add hb-set-fuzzer. 
It fuzzes all of the hb_set process methods (intersection, subtraction, union, and symmetric difference).
 2020-02-11 03:08:39 +03:30