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12016 Commits

Author SHA1 Message Date
Garret Rieger 8b686afeb5 [subset] add unlikely(). 2021-04-06 12:34:44 -06:00
Garret Rieger 64122b5a44 [subset] don't visit lookup if covered glyph set has failed. 
If covered glyph set is in error then the same lookup can be recursed into repeatedly potentially causing a fuzzer timeout. Fixes: https://oss-fuzz.com/testcase-detail/5416421032067072.
 2021-04-06 12:34:44 -06:00
Garret Rieger 4ec18c85e6 [subset] add subsetting tests with drop hints and layout subsetting enabled. 2021-04-06 11:50:44 -06:00
Garret Rieger 6f98a8ed46 [subset] Anchor should only use format 1 when hints are dropped. 
Refactor Anchor to have a subset method instead of copy. This also allows
use to use serialize_subset in several places which simplifies calculating
offset bases.
 2021-04-06 11:50:44 -06:00
Garret Rieger 71d6d15600 [subset] clamp distance to prevent shifting outside of the limits of int64. 
Fixes https://oss-fuzz.com/testcase-detail/4961171477233664.
 2021-04-06 11:48:39 -06:00
Khaled Hosny fcacd17748 [ot] Update _hb_glyph_info_is_default_ignorable_and_not_hidden() 
Used _hb_glyph_info_substituted() similar to the change made to
_hb_glyph_info_is_default_ignorable() in
7686ff854b.
 2021-04-06 11:47:06 -06:00
Garret Rieger 596f4258d0 [subset] copy Lookup::markFilteringSet when subseting. 2021-04-02 15:33:52 -06:00
Behdad Esfahbod d3a2f999e4 Fix up build 
This was left out; oops.
 2021-04-02 08:33:03 -06:00
Garret Rieger c35d786397 [subset] never drop the 'pref' feature. 
Never ever drop feature 'pref', even if it's empty. Harfbuzz uses it to choose the shaper for Khmer.
 2021-04-01 16:27:35 -06:00
Behdad Esfahbod 092094f705 Use as_array() and range loops in a few places 2021-04-01 16:02:54 -06:00
Garret Rieger 55e7f3fe32 [subset] Match FeatureVariationRecord dropping from fontTools. 
Only drop records with no matching features that are at the end of the list. See: cab7d13dc0
 2021-04-01 15:26:02 -06:00
Garret Rieger f0c78e0282 [subset] don't drop features referenced in a feature variation substitution. 2021-04-01 15:26:02 -06:00
Garret Rieger dae99b7769 [subset] don't keep FeatureVariationRecord's with no subsittutions. 2021-04-01 15:26:02 -06:00
Garret Rieger 85b0728783 Add full variable font subsetting test. 2021-04-01 15:26:02 -06:00
Behdad Esfahbod c4b49075f6 Update CMakeLists.txt 
Keep the warning.
 2021-04-01 11:47:33 -06:00
Timo Suoranta 9945f32746 Test fix to export target include directories 2021-04-01 11:47:33 -06:00
Garret Rieger b10741ca7f [subset] when closing glyphs in context lookups don't use a current glyph set if a lookup is already applied. 2021-03-31 21:03:33 -06:00
Garret Rieger 2773d05740 [subset] Add a test case using NotoNastaliqUrdu. 2021-03-31 21:03:33 -06:00
Garret Rieger 8ef4257dc8 [sanitize] change max ops to track number of bytes processed. 
Counting bytes as the operations is likely to be a better proxy for how
much work processing the table will cost vs. the current approach of
counting the number of sub-objects.

This should allow checks for max features, max scripts, etc. to be removed.

I tested this change against the full collection of fonts at https://github.com/google/fonts
and a max ops factor of 3 was sufficient to successfully sanitize all of them.
 2021-03-31 19:03:30 -06:00
Behdad Esfahbod 70110f6aaa Modify OffsetTo<>::sanitize() overflow check 
The code in question was introduced in 70eb2ff682.
Rewrite it to not call sanitizer check_range() as we want to use
check_range() for byte accounting.

Part of https://github.com/harfbuzz/harfbuzz/pull/2923
 2021-03-31 17:04:02 -06:00
Behdad Esfahbod 4dba749d83 Add SortedArray{16,32}Of<> 2021-03-31 16:09:39 -06:00
Behdad Esfahbod 5639e253f9 Add Array16Of<> 2021-03-31 16:04:43 -06:00
Behdad Esfahbod 2520a82df9 s/LArrayOf/Array32Of/g 2021-03-31 15:41:54 -06:00
Behdad Esfahbod 5efe360986 Rename (Unsized)OffsetListOf 2021-03-31 15:33:22 -06:00
Behdad Esfahbod 6c4e0491d7 s/OffsetArrayOf/Array16OfOffset16To/g 2021-03-31 15:31:32 -06:00
Behdad Esfahbod 1fc6b69aed s/UnsizedOffsetArrayOf/UnsizedArray16OfOffsetTo/g 2021-03-31 15:30:35 -06:00
Behdad Esfahbod 2a54c9f744 . 2021-03-31 15:26:42 -06:00
Behdad Esfahbod c539afb08b [CFF] Use NNOffsetTo<> instead of OffsetTo<> 
I'm pretty sure that's what is intended.
 2021-03-31 13:28:25 -06:00
Behdad Esfahbod 9b4b58493b Fixup for recent OffsetTo<> changes 2021-03-31 13:27:21 -06:00
Behdad Esfahbod ad28f973f3 Rename offset types to be explicit about their size 
Add Offset16To<>, Offset24To<>, and Offset32To<> for most use-cases.
 2021-03-31 13:00:07 -06:00
Garret Rieger c5c13006a1 [subset] fix memory leaks found in https://oss-fuzz.com/testcase-detail/5179935334465536 2021-03-31 12:37:45 -06:00
Behdad Esfahbod bd2950b393 Make VariationStore::get_delta(outer, inner) private 2021-03-31 11:36:36 -06:00
Behdad Esfahbod 934675a429 Use VarIdx in VariationDevice 2021-03-31 11:34:41 -06:00
Behdad Esfahbod 0f7f7536b9 [hvar] Change variation-index types from "unsigned int" to uint32_t 2021-03-31 11:31:49 -06:00
Behdad Esfahbod 9ffc46b8ff Add VarIdx 2021-03-31 11:26:18 -06:00
Behdad Esfahbod 2179281c40 Add Offset24 2021-03-31 11:20:21 -06:00
Behdad Esfahbod b3159ed8d2 [util] Silence compiler warning 2021-03-30 20:52:56 -06:00
Andrzej Perczak cab9d5a57d hb-config: Include config-override earlier 
Currently config-override.h is included at the end of this file. This caused a problem for me while undefing HB_DISABLE_DEPRECATED, namely HB_IF_NOT_DEPRECATED was defined before actual undef took place and broke the whole build. I believe it would break builds for some other defines, too. Moving config-override.h include right after predefined configs is more sane and fixes all potential problems with includes.
 2021-03-30 20:50:02 -06:00
Garret Rieger adca4ce071 [subset] fixes https://oss-fuzz.com/testcase-detail/6173520787800064. 
Caused by incorrect bounds check in glyph closure for context lookups.
 2021-03-30 15:44:41 -06:00
Garret Rieger 9f77a0c1ff [subset] use hb_set_clear to avoid calling clear() on null pool set. 2021-03-30 15:12:52 -06:00
Garret Rieger 752e393ad2 [subset] avoid calling clear on null pool set. 2021-03-30 15:12:52 -06:00
Behdad Esfahbod 9ed5f04a70 [subset] Simplify recent out-of-memory fixes 
By checking return status of map->set().
 2021-03-29 18:14:30 -06:00
Behdad Esfahbod a8f9f85a91 [map] Return success from ->set() 2021-03-29 18:13:22 -06:00
Garret Rieger 8741914a80 [subset] fix memory leak when map insert fails. 2021-03-29 18:02:32 -06:00
Behdad Esfahbod 2397689387 Remove hb_success_t 
Was not rolled-out yet.  So just expand.
 2021-03-29 17:49:16 -06:00
Behdad Esfahbod 7a2eda7817 Move code around 2021-03-29 17:49:12 -06:00
Behdad Esfahbod bcb57dccaa [sanitize] Add short-circuit to ArrayOfM1 
Like the sibling ArrayOf types.
 2021-03-29 17:49:08 -06:00
Garret Rieger 5b6da6d2f0 [subset] add fuzzer test case. 2021-03-29 17:41:07 -06:00
Garret Rieger 52df6b9fd8 [subset] check for set insertion success. 2021-03-29 17:41:07 -06:00
Garret Rieger c6adb90a27 [subset] fix nullptr deref. 2021-03-29 17:41:07 -06:00