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 "stopusercallbackstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <iostream>
21
22 #include "stop_user_callback_stub.h"
23 #include "message_parcel.h"
24 #include "securec.h"
25
26 using namespace OHOS::AAFwk;
27
28 namespace OHOS {
29 namespace {
30 constexpr size_t FOO_MAX_LEN = 1024;
31 constexpr size_t U32_AT_SIZE = 4;
32 const std::u16string ABILITYMGR_INTERFACE_TOKEN = u"ohos.aafwk.StopUserCallback";
33 }
34
35 class StopUserCallbackStubFuzzTest : public StopUserCallbackStub {
36 public:
37 StopUserCallbackStubFuzzTest() = default;
~StopUserCallbackStubFuzzTest()38 virtual ~StopUserCallbackStubFuzzTest()
39 {}
OnStopUserDone(int userId,int errcode)40 void OnStopUserDone(int userId, int errcode) override
41 {}
42 };
43
GetU32Data(const char * ptr)44 uint32_t GetU32Data(const char* ptr)
45 {
46 // convert fuzz input data to an integer
47 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
48 }
49
DoSomethingInterestingWithMyAPI(const char * data,size_t size)50 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
51 {
52 uint32_t code = GetU32Data(data);
53
54 MessageParcel parcel;
55 parcel.WriteInterfaceToken(ABILITYMGR_INTERFACE_TOKEN);
56 parcel.WriteBuffer(data, size);
57 parcel.RewindRead(0);
58 MessageParcel reply;
59 MessageOption option;
60
61 std::shared_ptr<StopUserCallbackStub> stopusercallbackstub = std::make_shared<StopUserCallbackStubFuzzTest>();
62
63 stopusercallbackstub->OnRemoteRequest(code, parcel, reply, option);
64
65 return true;
66 }
67 }
68
69 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)70 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
71 {
72 /* Run your code on data */
73 if (data == nullptr) {
74 std::cout << "invalid data" << std::endl;
75 return 0;
76 }
77
78 /* Validate the length of size */
79 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
80 return 0;
81 }
82
83 char* ch = (char *)malloc(size + 1);
84 if (ch == nullptr) {
85 std::cout << "malloc failed." << std::endl;
86 return 0;
87 }
88
89 (void)memset_s(ch, size + 1, 0x00, size + 1);
90 if (memcpy_s(ch, size, data, size) != EOK) {
91 std::cout << "copy failed." << std::endl;
92 free(ch);
93 ch = nullptr;
94 return 0;
95 }
96
97 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
98 free(ch);
99 ch = nullptr;
100 return 0;
101 }
102
103