1 /*
2 * Copyright (c) 2022-2023 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 "cmsendrequest_fuzzer.h"
17
18 #include "cm_fuzz_test_common.h"
19 #include "cm_param.h"
20 #include "cm_request.h"
21
22 using namespace CmFuzzTest;
23 namespace OHOS {
DoSomethingInterestingWithMyAPI(const uint8_t * data,size_t size)24 bool DoSomethingInterestingWithMyAPI(const uint8_t* data, size_t size)
25 {
26 uint32_t minSize = sizeof(CertManagerInterfaceCode) + sizeof(struct CmParamSet) + sizeof(struct CmBlob);
27 uint8_t *myData = nullptr;
28 if (!CopyMyData(data, size, minSize, &myData)) {
29 return false;
30 }
31
32 uint32_t remainSize = static_cast<uint32_t>(size);
33 uint32_t offset = 0;
34
35 CertManagerInterfaceCode type;
36 (void)memcpy_s(&type, sizeof(CertManagerInterfaceCode), myData, sizeof(CertManagerInterfaceCode));
37 type = static_cast<CertManagerInterfaceCode>(static_cast<uint32_t>(type) %
38 (static_cast<uint32_t>(CM_MSG_MAX) - static_cast<uint32_t>(CM_MSG_BASE)) +
39 static_cast<uint32_t>(CM_MSG_BASE));
40 offset += sizeof(uint32_t);
41 remainSize -= sizeof(uint32_t);
42
43 struct CmParamSet *sendParamSet = nullptr;
44 if (ConstructParamSet(myData, &remainSize, &offset, type, &sendParamSet) == false) {
45 CmFree(myData);
46 return false;
47 }
48
49 struct CmBlob inBlob = { sendParamSet->paramSetSize, reinterpret_cast<uint8_t *>(sendParamSet) };
50
51 struct CmBlob outBlob = { 0, nullptr };
52 if (!GetCmBlobFromBuffer(myData, &remainSize, &offset, &outBlob)) {
53 CmFree(myData);
54 CmFreeParamSet(&sendParamSet);
55 return false;
56 }
57
58 SetATPermission();
59 (void)SendRequest(type, &inBlob, &outBlob);
60
61 CmFree(myData);
62 CmFreeParamSet(&sendParamSet);
63 return true;
64 }
65 }
66
67 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)68 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
69 {
70 /* Run your code on data */
71 OHOS::DoSomethingInterestingWithMyAPI(data, size);
72 return 0;
73 }
74