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Fix bugs impacting fuzzing coverage

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- Update ConvertDataToValidEnum to not use FuzzedDataProvider since it
  causes unexpected parsing results.
- Add OEMCryptoLicenseAPIFuzz::LoadLicenseWithGenericCryptoKeys so that
  generic crypto fuzz tests can load appropriate keys.
- Remove custom mutator from oemcrypto_generic_verify_fuzz because it
  provides minimal additional coverage.
- Refresh affected corpus files.

Merged from https://widevine-internal-review.googlesource.com/168557
Merged from https://widevine-internal-review.googlesource.com/171191
Merged from https://widevine-internal-review.googlesource.com/172170
Merged from https://widevine-internal-review.googlesource.com/172250

Change-Id: Ie676a36cbf4c12bdda9566fad3590a7b69168d9c
This commit is contained in:
Ian Benz
2023-03-21 01:45:50 +00:00
committed by Robert Shih
parent 55ef762c08
commit 57b391c8b9
300 changed files with 81 additions and 139 deletions
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2
libwvdrmengine/oemcrypto/test/fuzz_tests/oemcrypto_copy_buffer_fuzz.cc
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@@ -33,7 +33,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider fuzzed_data(data, size);
fuzzed_data.ConsumeData(&fuzzed_structure, sizeof(fuzzed_structure));
wvoec::ConvertDataToValidEnum(OEMCrypto_BufferType_MaxValue,
&fuzzed_structure.dest_buffer_desc.type);
fuzzed_structure.dest_buffer_desc.type);
fuzzed_structure.dest_buffer_desc.buffer_config %=
wvoec::MAX_FUZZ_OUTPUT_LENGTH + 1;
const std::vector<OEMCrypto_SharedMemory> input_buffer =