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 "handledlpapp_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "ability_manager_client.h"
23 #undef private
24 #include "ability_record.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 #ifdef WITH_DLP
48 abilitymgr->HandleDlpApp(*want);
49 #endif // WITH_DLP
50 delete want;
51 want = nullptr;
52 }
53 }
54
55 return true;
56 }
57 }
58
59 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)60 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
61 {
62 /* Run your code on data */
63 if (data == nullptr) {
64 std::cout << "invalid data" << std::endl;
65 return 0;
66 }
67
68 /* Validate the length of size */
69 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
70 return 0;
71 }
72
73 char* ch = static_cast<char*>(malloc(size + 1));
74 if (ch == nullptr) {
75 std::cout << "malloc failed." << std::endl;
76 return 0;
77 }
78
79 (void)memset_s(ch, size + 1, 0x00, size + 1);
80 if (memcpy_s(ch, size, data, size) != EOK) {
81 std::cout << "copy failed." << std::endl;
82 free(ch);
83 ch = nullptr;
84 return 0;
85 }
86
87 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
88 free(ch);
89 ch = nullptr;
90 return 0;
91 }
92
93