AuroraMiddleware/harfbuzz
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75622b0d24
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Author SHA1 Message Date
Garret Rieger
75622b0d24 [subset] Limit the number of features processed in the feature closure. 2020-02-28 16:10:14 -08:00
Garret Rieger
410b4881d0 [subset] Add fuzzer timeout testcase. 2020-02-28 16:10:14 -08:00
Garret Rieger
c66ee213b7 Limit the number of feature indices processed during feature collection. 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
e642aab116
[subset] Add source_blob as a hb_subset_context_t field (#2203) 
So no more double sanitizing source table.
 2020-02-28 22:24:25 +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
Qunxin Liu
b0749bfaa5 [subset] GDEF LigCaretList subsetting support 2020-02-28 14:51:52 +03:30
ariza
002f0e20c4 reimplment serialize_int using check_assign() 2020-02-28 14:21:58 +03:30
Ebrahim Byagowi
14b134379d [gvar] Minor, check whether sub_array result also have enough room 2020-02-27 21:01:48 +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
Evgeniy Reizner
f44e1dc07d Fix spelling. 2020-02-27 13:33:56 +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
Garret Rieger
50129b03a1 Add a reverse () call to hb_array_t. 2020-02-26 11:09:54 -08:00
Garret Rieger
38c6598c1c Switch to C style comments. 2020-02-26 11:09:54 -08:00
Garret Rieger
52b6e0baa0 When serializing cmap14 order the offsets from smallest to largest. 
Current versions of OTS fail fonts with cmap 14's who's last offset does not point to the a block at the end of the table.
 2020-02-26 11:09:54 -08:00
ariza
a99134c5be add oss-fuzz 20886 test file 2020-02-26 09:58:03 -08:00
ariza
d0aaba5c50 fixes oss-fuzz 20886 
hb_set_t::resize () is needed after compact()
 2020-02-26 09:35:32 -08:00
Ebrahim Byagowi
05a25c1a5b
[cff] minor, remove unused fields 2020-02-26 19:35:27 +03:30
Ebrahim Byagowi
9fe0dc3464 [draw] Pass draw_helper_t itself around instead recreating it 
Specially helpful if we want to change the design
 2020-02-26 17:40:46 +03:30
Ebrahim Byagowi
1b8b863898 minor 2020-02-26 16:36:48 +03:30
Ebrahim Byagowi
4cdaa9d1f4 [glyf] Simplify contour end logic 
So no need for infinite loop here
 2020-02-26 16:29:14 +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
Ebrahim Byagowi
073d4954e0 [draw] Port glyf path extract to draw_helper_t 2020-02-26 15:40:40 +03:30
Ebrahim Byagowi
0ebf3a4e62 [draw] Move common CFF path building logic to draw_helper_t 2020-02-26 15:15:22 +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
Ebrahim Byagowi
c21eb86bfd
Merge pull request #2163 from harfbuzz/absolute-link 
added add_link_abs()
 2020-02-26 02:54:38 +03:30
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
de896278f7 coding & comment tweaks 2020-02-25 07:12:20 -08:00
Ebrahim Byagowi
2f97aa65e5 [cff] Make sure previous is ended on processing a seac 2020-02-25 18:07:44 +03:30
Ebrahim Byagowi
acc2d4738e [cff] Make path extract easier to read and more defensive 2020-02-25 18:05:48 +03:30
Ebrahim Byagowi
b59eb54f70 [glyf] Refactor, move get_points inside Glyph 2020-02-25 12:56:32 +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
f00eb4ebfa [gvar] Don't compare against Null address 2020-02-24 09:25:19 +03:30
Ebrahim Byagowi
19b78d56cd [gvar] Accept coord_count even if is higher than gvar's axisCount 2020-02-24 09:25:18 +03:30
Ebrahim Byagowi
197e2e929b [gvar] Return gracefully even if gvar wasn't used at all 2020-02-24 08:55:35 +03:30
Ebrahim Byagowi
346ab9884b [gvar] Return gracefully even if coords_count != gvar's axis count 
It shouldn't be that common to have the situation, even so, no need to
reject entire a glyph even if gvar isn't used.
 2020-02-24 08:48:54 +03:30
Ebrahim Byagowi
5f23a76e99 [cff] Don't remove coords const qualification 
We should find some way to audit all the const removals, perhaps by
enabling -Wold-style-cast warning on the project and turning all the
implicit const removals to const_cast.
 2020-02-24 08:23:25 +03:30
Michiharu Ariza
ff5223ba60
remove invalid glyphs from closure (#2188) 
fix issue #2186
 2020-02-23 15:53:21 -08:00
Ebrahim Byagowi
e17fd0d91c [tools] More on py3 compatibility 2020-02-24 00:10:11 +03:30