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 "stopserviceability_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_client.h"
22 #include "parcel.h"
23 #include "securec.h"
24 #include "want.h"
25
26 using namespace OHOS::AAFwk;
27 using namespace OHOS::AppExecFwk;
28
29 namespace OHOS {
30 namespace {
31 constexpr size_t FOO_MAX_LEN = 1024;
32 constexpr size_t U32_AT_SIZE = 4;
33 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)34 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
35 {
36 auto abilityMgr = AbilityManagerClient::GetInstance();
37 if (!abilityMgr) {
38 return false;
39 }
40
41 // fuzz for want
42 Parcel wantParcel;
43 Want* want = nullptr;
44 if (wantParcel.WriteBuffer(data, size)) {
45 want = Want::Unmarshalling(wantParcel);
46 if (want) {
47 abilityMgr->StopServiceAbility(*want);
48 }
49 }
50
51 if (want) {
52 delete want;
53 want = nullptr;
54 }
55
56 return true;
57 }
58 }
59
60 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)61 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
62 {
63 /* Run your code on data */
64 if (data == nullptr) {
65 std::cout << "invalid data" << std::endl;
66 return 0;
67 }
68
69 /* Validate the length of size */
70 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
71 return 0;
72 }
73
74 char* ch = static_cast<char*>(malloc(size + 1));
75 if (ch == nullptr) {
76 std::cout << "malloc failed." << std::endl;
77 return 0;
78 }
79
80 (void)memset_s(ch, size + 1, 0x00, size + 1);
81 if (memcpy_s(ch, size, data, size) != EOK) {
82 std::cout << "copy failed." << std::endl;
83 free(ch);
84 ch = nullptr;
85 return 0;
86 }
87
88 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
89 free(ch);
90 ch = nullptr;
91 return 0;
92 }