22f7c61acf
implement SID to glyph ID mapping with predefined Charset
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Also fixes oss-fuzz 21769
2020-04-18 15:42:30 +04:30
0d5695983e
[subset] fixes dangling object_t issue in FeatureVariationRecord
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Fixes https://crbug.com/oss-fuzz/21560
revert () does not clean up useless object_t. Adjust the order of
subsetting substitutions and conditions to avoid dangling object_t.
2020-04-06 13:41:33 +04:30
57b7de032f
[subset] Fail ClassDefFormat1 serialization if no space available
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Fixes https://crbug.com/oss-fuzz/21580
2020-04-05 17:38:04 +04:30
014e038b2c
[subset] Bail out of context lookup expansion once the lookup limit is encountered.
2020-04-01 11:14:41 +04:30
5d345d0cd1
[subset] Limit the number of lookup indices processed subsetting Feature.
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> Also, remove two unnessecary full iterations of the lookup index iterator during serialization of the index array. Fixes fuzzer found timeout.
2020-04-01 11:13:05 +04:30
96d792ae80
[avar] Prevent mul overflow
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Fixes https://crbug.com/oss-fuzz/21350
2020-03-26 15:01:14 +00:00
4ad686b9c0
[subset] fix fuzzer timeout in layout closure
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Bail out of chain context lookup expansion once the lookup limit is encountered.
2020-03-26 06:32:28 +00:00
7054b12206
[meson] Mark rest of non-install executables explicitly
2020-03-24 19:06:09 +00:00
600bf21fbc
[meson] Add draw-fuzzer runner
2020-03-24 19:06:09 +00:00
28deb6b718
[meson] test/fuzzing simplify
2020-03-24 19:06:09 +00:00
78622231ac
[meson] More comment on tests are causing timeout failure
2020-03-24 19:06:09 +00:00
d57fc627e9
[meson] raise timeout value of subset fuzzer
2020-03-24 19:06:09 +00:00
761695264b
[tests] Remove py2 workaround for lack of timeout in subprocess
2020-03-19 10:32:46 +00:00
b5526a09ff
[tools] Remove in-house 'which' now that we have py3
2020-03-19 10:32:46 +00:00
430bf69653
Add potentially crashing font as a fuzzer seed.
2020-03-14 00:55:47 +03:30
755a77d660
Move outline draw API behind HB_EXPERIMENTAL_API directive
2020-03-13 08:25:53 +03:30
834a224a50
[subset] Put a limit on the number of lookup indices that can be visited during closures
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Fixes https://crbug.com/oss-fuzz/21025
2020-03-12 13:32:36 +03:30
c494d7abcd
Remove cmake testing and add meson build bot
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CMake tests are broken anyway as py3 changes so let's get rid of them
2020-03-11 20:15:10 +03:30
1c3f80ba13
[meson] Minor updates
2020-03-11 20:15:10 +03:30
04438554c8
meson: Update build files after rebase
2020-03-11 19:18:57 +03:30
618584e923
meson: rename incbase to incconfig
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Makes it clearer what it's for: config.h. See #4 .
2020-03-11 19:18:57 +03:30
d4a7237327
meson: all tests passing on Windows / MSVC
2020-03-11 19:18:57 +03:30
7ee650b173
meson: refactor fuzzing test
2020-03-11 19:18:57 +03:30
920efc0ef7
Add Meson build definitions
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Fixes #490
http://mesonbuild.com
2020-03-11 19:18:57 +03:30
0d729b4b72
[avar] Fix out-of-bound read when input is bigger than all the coords
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'i' shouldn't become equal to array's length which as the increament
is happened at end of the loop, if the input is bigger than all the
table coords, it will be equal to array's length.
Fixes https://crbug.com/oss-fuzz/21092
2020-03-07 13:20:41 +03:30
446d1e3bbc
[fuzz] Add more of fixed cases
2020-03-05 00:49:03 +03:30
99b5b3f1b1
[gvar] Make sure TupleVarHeader has the needed size
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Fixes https://crbug.com/oss-fuzz/21026
2020-03-04 12:43:26 +03:30
558f922788
[fuzz] Avoid empty memcpy and ubsan complain by length checking before memcpy
2020-03-03 21:39:22 +03:30
6543d166fd
[fuzz] Remove the not yet fixed timeout, going to investigate
2020-03-03 21:39:22 +03:30
2bbf1c8673
[fuzz] Add more of supposed to already be fixed cases from Chromium bug tracker
2020-03-03 21:39:22 +03:30
f253f06cf3
[fuzz] Add another fixed case
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https://crbug.com/oss-fuzz/14626
another numerous subtables count which is fixed by d38360397
2020-03-03 19:12:04 +03:30
d383603976
Limit OT::Lookup subtables ( #2219 )
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Fixes https://crbug.com/oss-fuzz/13943
2020-03-02 22:41:08 +03:30
29efd964f2
[fuzz] Add cases that marked as wontfix
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Let's see if they were really false alarms, if so, let's just have them.
2020-03-02 14:22:29 +03:30
cb65150fec
[draw] minor
2020-02-29 16:12:54 +03:30
86c40b3a1d
[fuzz/draw] Call _get_glyph_extents
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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
5ab50eebd7
collect_unicodes() with clamp, calling add_range()
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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
410b4881d0
[subset] Add fuzzer timeout testcase.
2020-02-28 16:10:14 -08:00
e57ced5fc0
[gvar] Add other possibly fixed fuzzer case
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Speculatively should've been fixed by 61208401https://crbug.com/oss-fuzz/20924 related
2020-02-28 23:29:05 +03:30
758fda728b
[glyf] Don't accept gids higher than maxp's glyphs number
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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
e90213868b
Revert "collect_unicodes() to check gid < num_glyphs with cmap 12"
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Didn't fix the case actually, making bots to fail.
This reverts commit 15b43a4104
2020-02-28 21:24:51 +03:30
61208401f4
[gvar] Use hb_bytes_t.check_range instead having in house one
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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
15b43a4104
collect_unicodes() to check gid < num_glyphs with cmap 12
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fixes #2204
2020-02-28 20:15:39 +03:30
868ecf7b26
[draw] Add fuzzer runner
2020-02-28 19:57:56 +03:30
8eba66c1c6
[gvar] Fix invalid memory access by refactoring GlyphVarData fetch logic
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Fixes https://crbug.com/oss-fuzz/20906
2020-02-27 20:26:54 +03:30
a99134c5be
add oss-fuzz 20886 test file
2020-02-26 09:58:03 -08:00
1b8b863898
minor
2020-02-26 16:36:48 +03:30
132fcfbc47
[fuzz] minor don't abort main.cc when the file was empty or not found
2020-02-26 16:15:17 +03:30
84163c83d3
[draw] Skip commands and paths not contributing anything
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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
152000d9c7
[fuzz] Practice variations on font object
2020-02-25 21:16:57 +03:30
036d868913
[draw] Add a fuzzer
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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
Qunxin Liu
Ebrahim Byagowi
Garret Rieger
Khaled Hosny
Tim-Philipp Müller
Mathieu Duponchelle