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 "abilitymgrcontrolinterceptor_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "interceptor/control_interceptor.h"
23 #undef private
24
25 #include "securec.h"
26 #include "ability_record.h"
27
28 using namespace OHOS::AAFwk;
29 using namespace OHOS::AppExecFwk;
30
31 namespace OHOS {
32 namespace {
33 constexpr int INPUT_ZERO = 0;
34 constexpr int INPUT_ONE = 1;
35 constexpr int INPUT_TWO = 2;
36 constexpr int INPUT_THREE = 3;
37 constexpr size_t U32_AT_SIZE = 4;
38 constexpr size_t OFFSET_ZERO = 24;
39 constexpr size_t OFFSET_ONE = 16;
40 constexpr size_t OFFSET_TWO = 8;
41 constexpr uint8_t ENABLE = 2;
42 }
GetU32Data(const char * ptr)43 uint32_t GetU32Data(const char* ptr)
44 {
45 // convert fuzz input data to an integer
46 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
47 ptr[INPUT_THREE];
48 }
49
GetFuzzAbilityToken()50 sptr<Token> GetFuzzAbilityToken()
51 {
52 sptr<Token> token = nullptr;
53 AbilityRequest abilityRequest;
54 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
55 abilityRequest.abilityInfo.name = "MainAbility";
56 abilityRequest.abilityInfo.type = AbilityType::DATA;
57 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
58 if (abilityRecord) {
59 token = abilityRecord->GetToken();
60 }
61 return token;
62 }
63
DoSomethingInterestingWithMyAPI(const char * data,size_t size)64 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
65 {
66 std::shared_ptr<ControlInterceptor> executer = std::make_shared<ControlInterceptor>();
67 Want want;
68 ElementName element("", "com.test.control", "MainAbility");
69 want.SetElement(element);
70 int requestCode = static_cast<int>(GetU32Data(data));
71 int32_t userId = static_cast<int32_t>(GetU32Data(data));
72 bool boolParam = *data % ENABLE;
73 sptr<IRemoteObject> callerToken = GetFuzzAbilityToken();
74 auto shouldBlockFunc = []() { return false; };
75 AbilityInterceptorParam param(want, requestCode, userId, boolParam, callerToken, shouldBlockFunc);
76 executer->DoProcess(param);
77 AppExecFwk::AppRunningControlRuleResult controlRule;
78 executer->CheckControl(want, userId, controlRule);
79 return true;
80 }
81 }
82
83 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)84 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
85 {
86 /* Run your code on data */
87 if (data == nullptr) {
88 std::cout << "invalid data" << std::endl;
89 return 0;
90 }
91
92 /* Validate the length of size */
93 if (size < OHOS::U32_AT_SIZE) {
94 return 0;
95 }
96
97 char* ch = static_cast<char*>(malloc(size + 1));
98 if (ch == nullptr) {
99 std::cout << "malloc failed." << std::endl;
100 return 0;
101 }
102
103 (void)memset_s(ch, size + 1, 0x00, size + 1);
104 if (memcpy_s(ch, size + 1, data, size) != EOK) {
105 std::cout << "copy failed." << std::endl;
106 free(ch);
107 ch = nullptr;
108 return 0;
109 }
110
111 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
112 free(ch);
113 ch = nullptr;
114 return 0;
115 }
116
117