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 #include "hksfinish_fuzzer.h"
16
17 #include <securec.h>
18
19 #include "hks_api.h"
20 #include "hks_mem.h"
21 #include "hks_param.h"
22 #include "hks_type.h"
23
24 const int BLOB_SIZE = 10;
25 const int DOUBLE_BLOB_SIZE = 20;
26 const int TRIPLE_BLOB_SIZE = 30;
27
28 namespace OHOS {
DoSomethingInterestingWithMyAPI(const uint8_t * data,size_t size)29 bool DoSomethingInterestingWithMyAPI(const uint8_t *data, size_t size)
30 {
31 if (data == nullptr || size <= (sizeof(struct HksParamSet) + TRIPLE_BLOB_SIZE)) {
32 return false;
33 }
34
35 uint8_t *myData = static_cast<uint8_t *>(HksMalloc(sizeof(uint8_t) * size));
36 if (myData == nullptr) {
37 return false;
38 }
39
40 (void)memcpy_s(myData, size, data, size);
41
42 struct HksBlob handle = { BLOB_SIZE, myData };
43 struct HksBlob inData = { BLOB_SIZE, static_cast<uint8_t *>(myData + BLOB_SIZE) };
44 struct HksBlob outData = { BLOB_SIZE, static_cast<uint8_t *>(myData + DOUBLE_BLOB_SIZE) };
45
46 struct HksParamSet *paramSet = reinterpret_cast<struct HksParamSet *>(myData + TRIPLE_BLOB_SIZE);
47 paramSet->paramSetSize = size - TRIPLE_BLOB_SIZE;
48
49 (void)HksFinish(&handle, paramSet, &inData, &outData);
50
51 HksFree(myData);
52 return true;
53 }
54 }
55
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)56 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
57 {
58 OHOS::DoSomethingInterestingWithMyAPI(data, size);
59 return 0;
60 }
61