1 /*
2 * Copyright (c) 2024 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 "renderstateobserverproxy_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "render_state_observer_proxy.h"
23 #undef private
24
25 #include "ability_record.h"
26 #include "parcel.h"
27 #include "securec.h"
28 #include "want.h"
29
30 using namespace OHOS::AAFwk;
31 using namespace OHOS::AppExecFwk;
32
33 namespace OHOS {
34 namespace {
35 constexpr int INPUT_ZERO = 0;
36 constexpr int INPUT_ONE = 1;
37 constexpr int INPUT_THREE = 3;
38 constexpr size_t U32_AT_SIZE = 4;
39 constexpr uint8_t ENABLE = 2;
40 constexpr size_t OFFSET_ZERO = 24;
41 constexpr size_t OFFSET_ONE = 16;
42 constexpr size_t OFFSET_TWO = 8;
43 }
44
45 const std::u16string APPMGR_INTERFACE_TOKEN = u"ohos.aafwk.AppManager";
GetU32Data(const char * ptr)46 uint32_t GetU32Data(const char* ptr)
47 {
48 // convert fuzz input data to an integer
49 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[ENABLE] << OFFSET_TWO) |
50 ptr[INPUT_THREE];
51 }
52
DoSomethingInterestingWithMyAPI(const char * data,size_t size)53 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
54 {
55 sptr<IRemoteObject> impl;
56 auto renderStateObserverProxy = std::make_shared<RenderStateObserverProxy>(impl);
57 std::string bundle(data, size);
58 int32_t uid = static_cast<int32_t>(GetU32Data(data));
59 RenderStateData renderStateData;
60 MessageParcel dataParcel;
61 dataParcel.WriteInterfaceToken(APPMGR_INTERFACE_TOKEN);
62 dataParcel.WriteBuffer(data, size);
63 dataParcel.RewindRead(0);
64 MessageParcel reply;
65 MessageOption option;
66 renderStateObserverProxy->OnRenderStateChanged(renderStateData);
67 renderStateObserverProxy->WriteInterfaceToken(dataParcel);
68 uint32_t code = static_cast<uint32_t>(GetU32Data(data));
69 renderStateObserverProxy->SendTransactCmd(code, dataParcel, reply, option);
70
71 return true;
72 }
73 }
74
75 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)76 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
77 {
78 /* Run your code on data */
79 if (data == nullptr) {
80 std::cout << "invalid data" << std::endl;
81 return 0;
82 }
83
84 /* Validate the length of size */
85 if (size < OHOS::U32_AT_SIZE) {
86 return 0;
87 }
88
89 char* ch = static_cast<char*>(malloc(size + 1));
90 if (ch == nullptr) {
91 std::cout << "malloc failed." << std::endl;
92 return 0;
93 }
94
95 (void)memset_s(ch, size + 1, 0x00, size + 1);
96 if (memcpy_s(ch, size + 1, data, size) != EOK) {
97 std::cout << "copy failed." << std::endl;
98 free(ch);
99 ch = nullptr;
100 return 0;
101 }
102
103 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
104 free(ch);
105 ch = nullptr;
106 return 0;
107 }
108