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 "startserviceextensionability_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_context_impl.h"
22 #include "parcel.h"
23 #include "want.h"
24 #include "securec.h"
25
26 using namespace OHOS::AAFwk;
27 using namespace OHOS::AppExecFwk;
28
29 namespace OHOS {
30 namespace {
31 constexpr size_t U32_AT_SIZE = 4;
32 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)33 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
34 {
35 std::shared_ptr<AbilityRuntime::AbilityContextImpl> context =
36 std::make_shared<AbilityRuntime::AbilityContextImpl>();
37
38 int32_t accountId = 100;
39 if (!context) {
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 context->StartServiceExtensionAbility(*want);
50 context->StartServiceExtensionAbility(*want, accountId);
51 }
52 }
53
54 if (want) {
55 delete want;
56 want = nullptr;
57 }
58
59 return true;
60 }
61 }
62
63 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)64 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
65 {
66 /* Run your code on data */
67 if (data == nullptr) {
68 std::cout << "invalid data" << std::endl;
69 return 0;
70 }
71
72 /* Validate the length of size */
73 if (size < OHOS::U32_AT_SIZE) {
74 return 0;
75 }
76
77 char* ch = static_cast<char*>(malloc(size + 1));
78 if (ch == nullptr) {
79 std::cout << "malloc failed." << std::endl;
80 return 0;
81 }
82
83 (void)memset_s(ch, size + 1, 0x00, size + 1);
84 if (memcpy_s(ch, size, data, size) != EOK) {
85 std::cout << "copy failed." << std::endl;
86 free(ch);
87 ch = nullptr;
88 return 0;
89 }
90
91 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
92 free(ch);
93 ch = nullptr;
94 return 0;
95 }
96
97