11255b7426
No-Typo-Check: From a third party header file Bug: 260918793 Test: unit tests Test: atp v2/widevine-eng/drm_compliance Change-Id: I36effd6a10a99bdb2399ab1f4a0fad026d607c70
84 lines
2.9 KiB
C++
84 lines
2.9 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 Master
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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 "oemcrypto_fuzz_helper.h"
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#include "oemcrypto_fuzz_structs.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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// OEMCrypto_DestBufferDesc and a buffer from which data needs to be copied
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// are expected as inputs to copy buffer API.
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// Input fuzzed data is interpreted as:
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// (OEMCrypto_DestBufferDesc | subsample_flags | input_buffer)
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OEMCrypto_Copy_Buffer_Fuzz fuzzed_structure;
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if (size < sizeof(fuzzed_structure)) {
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return 0;
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}
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FuzzedDataProvider fuzzed_data(data, size);
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fuzzed_data.ConsumeData(&fuzzed_structure, sizeof(fuzzed_structure));
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ConvertDataToValidEnum(OEMCrypto_BufferType_MaxValue,
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&fuzzed_structure.dest_buffer_desc.type);
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fuzzed_structure.dest_buffer_desc.buffer_config %= MAX_FUZZ_OUTPUT_LENGTH + 1;
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const std::vector<OEMCrypto_SharedMemory> input_buffer =
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fuzzed_data.ConsumeRemainingBytes<OEMCrypto_SharedMemory>();
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OEMCryptoLicenseAPIFuzz license_api_fuzz;
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const uint32_t session_id = license_api_fuzz.session()->session_id();
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// Initialize output buffer.
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OEMCrypto_DestBufferDesc dest_buffer_desc;
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int secure_fd = 0;
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dest_buffer_desc.type = fuzzed_structure.dest_buffer_desc.type;
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switch (dest_buffer_desc.type) {
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case OEMCrypto_BufferType_Clear:
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dest_buffer_desc.buffer.clear.clear_buffer =
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new OEMCrypto_SharedMemory[fuzzed_structure.dest_buffer_desc
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.buffer_config];
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dest_buffer_desc.buffer.clear.clear_buffer_length =
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fuzzed_structure.dest_buffer_desc.buffer_config;
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break;
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case OEMCrypto_BufferType_Secure:
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if (OEMCrypto_AllocateSecureBuffer(
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session_id, fuzzed_structure.dest_buffer_desc.buffer_config,
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&dest_buffer_desc, &secure_fd) != OEMCrypto_SUCCESS) {
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return 0;
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}
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break;
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case OEMCrypto_BufferType_Direct:
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dest_buffer_desc.buffer.direct.is_video =
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fuzzed_structure.dest_buffer_desc.buffer_config & 1;
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break;
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}
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OEMCrypto_CopyBuffer(session_id, input_buffer.data(), input_buffer.size(),
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&dest_buffer_desc, fuzzed_structure.subsample_flags);
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// Free output buffer.
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switch (dest_buffer_desc.type) {
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case OEMCrypto_BufferType_Clear:
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delete[] dest_buffer_desc.buffer.clear.clear_buffer;
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break;
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case OEMCrypto_BufferType_Secure:
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OEMCrypto_FreeSecureBuffer(session_id, &dest_buffer_desc, secure_fd);
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break;
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case OEMCrypto_BufferType_Direct:
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break;
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}
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return 0;
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}
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} // namespace wvoec
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