1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "hksupdate_fuzzer.h"
17
18 #include <securec.h>
19
20 #include "hks_api.h"
21 #include "hks_mem.h"
22 #include "hks_param.h"
23 #include "hks_type.h"
24
25 #include "hks_fuzz_util.h"
26
27 namespace OHOS {
28 namespace Security {
29 namespace Hks {
30
DoSomethingInterestingWithMyAPI(uint8_t * data,size_t size)31 int DoSomethingInterestingWithMyAPI(uint8_t *data, size_t size)
32 {
33 if (data == nullptr || size < (sizeof(uint64_t) + sizeof(uint32_t))) {
34 return -1;
35 }
36
37 struct HksBlob handle = { sizeof(uint64_t), ReadData<uint8_t *>(data, size, sizeof(uint64_t)) };
38 uint32_t inDataSize = *ReadData<uint32_t *>(data, size, sizeof(uint32_t));
39 if (size < inDataSize) {
40 return -1;
41 }
42 struct HksBlob inData = { inDataSize, ReadData<uint8_t *>(data, size, inDataSize) };
43 std::vector<uint8_t> outDataBuffer(inDataSize);
44 struct HksBlob outData = { outDataBuffer.size(), outDataBuffer.data() };
45
46 WrapParamSet ps = ConstructHksParamSetFromFuzz(data, size);
47
48 [[maybe_unused]] int ret = HksUpdate(&handle, ps.s, &inData, &outData);
49
50 return 0;
51 }
52 }}}
53
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)54 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
55 {
56 std::vector<uint8_t> v(data, data + size);
57 return OHOS::Security::Hks::DoSomethingInterestingWithMyAPI(v.data(), v.size());
58 }
59