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 "abilitymgrdisposedruleinterceptor_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_record.h"
22 #include "securec.h"
23
24 #define private public
25 #include "disposed_rule_interceptor.h"
26 #undef private
27
28 using namespace OHOS::AAFwk;
29 using namespace OHOS::AppExecFwk;
30
31 #define DISABLE_FUZZ
32 namespace OHOS {
33 namespace {
34 constexpr int INPUT_ZERO = 0;
35 constexpr int INPUT_ONE = 1;
36 constexpr int INPUT_TWO = 2;
37 constexpr int INPUT_THREE = 3;
38 constexpr size_t FOO_MAX_LEN = 1024;
39 constexpr size_t U32_AT_SIZE = 4;
40 constexpr size_t OFFSET_ZERO = 24;
41 constexpr size_t OFFSET_ONE = 16;
42 constexpr size_t OFFSET_TWO = 8;
43 constexpr uint8_t ENABLE = 2;
44 }
45
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[INPUT_TWO] << OFFSET_TWO) |
50 ptr[INPUT_THREE];
51 }
52
GetFuzzAbilityToken()53 sptr<Token> GetFuzzAbilityToken()
54 {
55 sptr<Token> token = nullptr;
56 AbilityRequest abilityRequest;
57 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
58 abilityRequest.abilityInfo.name = "MainAbility";
59 abilityRequest.abilityInfo.type = AbilityType::DATA;
60 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
61 if (abilityRecord) {
62 token = abilityRecord->GetToken();
63 }
64 return token;
65 }
66
DoSomethingInterestingWithMyAPI(const char* data, size_t size)67 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
68 {
69 std::shared_ptr<DisposedRuleInterceptor> executer = std::make_shared<DisposedRuleInterceptor>();
70 Want want;
71 AppExecFwk::DisposedRule disposedRule;
72 std::string stringParam(data, size);
73 int requestCode = static_cast<int>(GetU32Data(data));
74 int32_t userId = static_cast<int32_t>(GetU32Data(data));
75 bool isWithUI = *data % ENABLE;
76 sptr<IRemoteObject> token = GetFuzzAbilityToken();
77 auto shouldBlockFunc = []() { return false; };
78 AbilityInterceptorParam param = AbilityInterceptorParam(want, requestCode, userId, isWithUI, token,
79 shouldBlockFunc);
80 const std::shared_ptr<AppExecFwk::AbilityInfo> abilityInfo;
81 int32_t bundleType = static_cast<int32_t>(GetU32Data(data));
82
83 executer-> DoProcess(param);
84 executer-> CheckControl(want, userId, disposedRule, 0);
85 executer-> CheckDisposedRule(want, disposedRule);
86 executer-> StartNonBlockRule(want, disposedRule);
87 executer-> GetAppMgr();
88 executer-> UnregisterObserver(stringParam);
89 executer-> CreateModalUIExtension(want, token);
90 executer-> SetInterceptInfo(want, disposedRule);
91
92 return true;
93 }
94 }
95
96 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)97 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
98 {
99 /* Run your code on data */
100 if (data == nullptr) {
101 return 0;
102 }
103
104 /* Validate the length of size */
105 if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
106 return 0;
107 }
108
109 char* ch = (char*)malloc(size + 1);
110 if (ch == nullptr) {
111 std::cout << "malloc failed." << std::endl;
112 return 0;
113 }
114
115 (void)memset_s(ch, size + 1, 0x00, size + 1);
116 if (memcpy_s(ch, size + 1, data, size) != EOK) {
117 std::cout << "copy failed." << std::endl;
118 free(ch);
119 ch = nullptr;
120 return 0;
121 }
122
123 #ifndef DISABLE_FUZZ
124 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
125 #endif
126 free(ch);
127 ch = nullptr;
128 return 0;
129 }
130
131