c7e237eb00
Several updates to fuzz tests, including http://go/wvgerrit/124043 Add documentation for partners to run fuzzing http://go/wvgerrit/128224 Fix generic verify fuzz script http://go/wvgerrit/120507 Fuzzing: Add fuzzer for reportusage API http://go/wvgerrit/120503 Fuzzing: Add fuzzer for deactivate usageentry API http://go/wvgerrit/120463 Fuzzing: Add logic to exit fuzzer script http://go/wvgerrit/120444 Fuzzing: Add fuzzer for loadusageentry API Bug: 183154879 Bug: 202994773 Bug: 186785830 Test: test only code Change-Id: I877681461824c51bc82f0766a9973378aafadba7
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
// Copyright 2020 Google LLC. All Rights Reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine
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// License Agreement.
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#include "FuzzedDataProvider.h"
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#include "OEMCryptoCENC.h"
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#include "log.h"
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#include "oemcrypto_fuzz_helper.h"
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#include "oemcrypto_fuzz_structs.h"
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#include "oemcrypto_types.h"
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namespace wvoec {
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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// Redirect printf and log statements from oemcrypto functions to a file to
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// reduce noise
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RedirectStdoutToFile();
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// Split data using separator.
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auto inputs = SplitInput(data, size);
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if (inputs.size() < 2) {
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return 0;
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}
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OEMCrypto_Generic_Api_Fuzz fuzzed_structure;
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if (inputs[0].size() < sizeof(fuzzed_structure)) {
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return 0;
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}
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// Copy OEMCrypto_Generic_Api_Fuzz from input data.
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memcpy(&fuzzed_structure, data, sizeof(fuzzed_structure));
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ConvertDataToValidEnum(OEMCrypto_CipherMode_MaxValue,
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&fuzzed_structure.cipher_mode);
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ConvertDataToValidEnum(OEMCrypto_Algorithm_MaxValue,
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&fuzzed_structure.algorithm);
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// Copy iv from input data.
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size_t iv_size = inputs[0].size() - sizeof(fuzzed_structure);
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if (iv_size == 0) {
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return 0;
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}
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vector<uint8_t> iv(iv_size);
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memcpy(iv.data(), data + sizeof(fuzzed_structure), iv_size);
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// Copy clear buffer from input data.
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vector<uint8_t> encrypted_buffer(inputs[1].size());
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vector<uint8_t> clear_buffer(inputs[1].size());
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memcpy(encrypted_buffer.data(), inputs[1].data(), inputs[1].size());
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OEMCryptoLicenseAPIFuzz license_api_fuzz;
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Session* session = license_api_fuzz.session();
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// Load license and call generic_decrypt API.
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license_api_fuzz.LoadLicense();
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OEMCryptoResult sts = OEMCrypto_SelectKey(
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session->session_id(), session->license().keys[0].key_id,
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session->license().keys[0].key_id_length, fuzzed_structure.cipher_mode);
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CheckStatusAndExitFuzzerOnFailure(sts, OEMCrypto_SUCCESS);
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OEMCrypto_Generic_Decrypt(session->session_id(), encrypted_buffer.data(),
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encrypted_buffer.size(), iv.data(),
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fuzzed_structure.algorithm, clear_buffer.data());
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return 0;
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}
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} // namespace wvoec
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