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 "startspecifiedability_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_record.h"
22 #include "app_mgr_client.h"
23 #include "configuration.h"
24 #include "parcel.h"
25 #include "securec.h"
26
27 using namespace OHOS::AAFwk;
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 namespace {
32 constexpr size_t FOO_MAX_LEN = 1024;
33 constexpr size_t U32_AT_SIZE = 4;
34 }
35
DoSomethingInterestingWithMyAPI(const char * data,size_t size)36 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
37 {
38 std::shared_ptr<AppMgrClient> appMgrClient = std::make_shared<AppMgrClient>();
39 if (!appMgrClient) {
40 return false;
41 }
42
43 // fuzz for want
44 Parcel wantParcel;
45 Want* want = nullptr;
46 if (wantParcel.WriteBuffer(data, size)) {
47 want = Want::Unmarshalling(wantParcel);
48 if (want) {
49 return false;
50 }
51 }
52 AbilityInfo abilityInfo;
53
54 appMgrClient->StartSpecifiedAbility(*want, abilityInfo);
55
56 if (want) {
57 delete want;
58 want = nullptr;
59 }
60
61 return true;
62 }
63 }
64
65 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)66 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
67 {
68 /* Run your code on data */
69 if (data == nullptr) {
70 std::cout << "invalid data" << std::endl;
71 return 0;
72 }
73
74 /* Validate the length of size */
75 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
76 return 0;
77 }
78
79 char* ch = static_cast<char*>(malloc(size + 1));
80 if (ch == nullptr) {
81 std::cout << "malloc failed." << std::endl;
82 return 0;
83 }
84
85 (void)memset_s(ch, size + 1, 0x00, size + 1);
86 if (memcpy_s(ch, size, data, size) != EOK) {
87 std::cout << "copy failed." << std::endl;
88 free(ch);
89 ch = nullptr;
90 return 0;
91 }
92
93 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
94 free(ch);
95 ch = nullptr;
96 return 0;
97 }
98
99