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 "appmgrstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "app_mgr_stub.h"
23 #include "app_mgr_service.h"
24 #undef private
25
26 #include "ability_record.h"
27 #include "parcel.h"
28 #include "securec.h"
29 #include "want.h"
30
31 using namespace OHOS::AAFwk;
32 using namespace OHOS::AppExecFwk;
33
34 namespace OHOS {
35 namespace {
36 constexpr int INPUT_ZERO = 0;
37 constexpr int INPUT_ONE = 1;
38 constexpr int INPUT_THREE = 3;
39 constexpr size_t U32_AT_SIZE = 4;
40 constexpr uint8_t ENABLE = 2;
41 constexpr size_t OFFSET_ZERO = 24;
42 constexpr size_t OFFSET_ONE = 16;
43 constexpr size_t OFFSET_TWO = 8;
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 auto appMgrStub = std::make_shared<AppMgrService>();
56 MessageParcel dataParcel;
57 MessageParcel reply;
58 dataParcel.WriteInterfaceToken(APPMGR_INTERFACE_TOKEN);
59 dataParcel.WriteBuffer(data, size);
60 dataParcel.RewindRead(0);
61 appMgrStub->HandleApplicationForegrounded(dataParcel, reply);
62 appMgrStub->HandleApplicationTerminated(dataParcel, reply);
63 appMgrStub->HandleClearUpApplicationData(dataParcel, reply);
64 appMgrStub->HandleGetProcessRunningInfosByUserId(dataParcel, reply);
65 appMgrStub->HandleAddAbilityStageDone(dataParcel, reply);
66 appMgrStub->HandleUnregisterApplicationStateObserver(dataParcel, reply);
67 appMgrStub->HandleGetForegroundApplications(dataParcel, reply);
68 appMgrStub->HandleAttachRenderProcess(dataParcel, reply);
69 appMgrStub->HandleJudgeSandboxByPid(dataParcel, reply);
70 appMgrStub->HandleDumpHeapMemory(dataParcel, reply);
71 appMgrStub->HandleRegisterNativeChildExitNotify(dataParcel, reply);
72 appMgrStub->HandleUnregisterNativeChildExitNotify(dataParcel, reply);
73 return true;
74 }
75 }
76
77 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)78 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
79 {
80 /* Run your code on data */
81 if (data == nullptr) {
82 std::cout << "invalid data" << std::endl;
83 return 0;
84 }
85
86 /* Validate the length of size */
87 if (size < OHOS::U32_AT_SIZE) {
88 return 0;
89 }
90
91 char* ch = static_cast<char*>(malloc(size + 1));
92 if (ch == nullptr) {
93 std::cout << "malloc failed." << std::endl;
94 return 0;
95 }
96
97 (void)memset_s(ch, size + 1, 0x00, size + 1);
98 if (memcpy_s(ch, size + 1, data, size) != EOK) {
99 std::cout << "copy failed." << std::endl;
100 free(ch);
101 ch = nullptr;
102 return 0;
103 }
104
105 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
106 free(ch);
107 ch = nullptr;
108 return 0;
109 }
110