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 "sendresulttoability_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_manager_client.h"
22 #include "ability_record.h"
23
24 using namespace OHOS::AAFwk;
25 using namespace OHOS::AppExecFwk;
26
27 namespace OHOS {
28 namespace {
29 constexpr size_t FOO_MAX_LEN = 1024;
30 constexpr size_t U32_AT_SIZE = 4;
31 }
32
GetU32Data(const char * ptr)33 uint32_t GetU32Data(const char* ptr)
34 {
35 // convert fuzz input data to an integer
36 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
37 }
38
DoSomethingInterestingWithMyAPI(const char * data,size_t size)39 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
40 {
41 int intParam = static_cast<int>(GetU32Data(data));
42 auto abilitymgr = AbilityManagerClient::GetInstance();
43
44 // fuzz for want
45 Parcel wantParcel;
46 Want* resultWant = nullptr;
47 if (wantParcel.WriteBuffer(data, size)) {
48 resultWant = Want::Unmarshalling(wantParcel);
49 if (!resultWant) {
50 return false;
51 }
52 }
53 abilitymgr->SendResultToAbility(intParam, intParam, *resultWant);
54 if (resultWant) {
55 delete resultWant;
56 resultWant = nullptr;
57 }
58 return true;
59 }
60 }
61
62 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)63 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
64 {
65 /* Run your code on data */
66 if (data == nullptr) {
67 std::cout << "invalid data" << std::endl;
68 return 0;
69 }
70
71 /* Validate the length of size */
72 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
73 return 0;
74 }
75
76 char* ch = static_cast<char*>(malloc(size + 1));
77 if (ch == nullptr) {
78 std::cout << "malloc failed." << std::endl;
79 return 0;
80 }
81
82 (void)memset_s(ch, size + 1, 0x00, size + 1);
83 if (memcpy_s(ch, size, data, size) != EOK) {
84 std::cout << "copy failed." << std::endl;
85 free(ch);
86 ch = nullptr;
87 return 0;
88 }
89
90 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
91 free(ch);
92 ch = nullptr;
93 return 0;
94 }
95
96