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 "cancelwantsender_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "parcel.h"
22 #include "securec.h"
23 #include "sender_info.h"
24 #include "want_agent_client.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 Parcel parcel;
36 sptr<IWantSender> sender = nullptr;
37 if (parcel.WriteBuffer(data, size)) {
38 sender = iface_cast<AAFwk::IWantSender>((static_cast<MessageParcel*>(&parcel))->ReadRemoteObject());
39 }
40 if (sender) {
41 WantAgentClient::GetInstance().CancelWantSender(sender);
42 }
43
44 return true;
45 }
46 }
47
48 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)49 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
50 {
51 /* Run your code on data */
52 if (data == nullptr) {
53 std::cout << "invalid data" << std::endl;
54 return 0;
55 }
56
57 /* Validate the length of size */
58 if (size < OHOS::U32_AT_SIZE) {
59 return 0;
60 }
61
62 char* ch = static_cast<char*>(malloc(size + 1));
63 if (ch == nullptr) {
64 std::cout << "malloc failed." << std::endl;
65 return 0;
66 }
67
68 (void)memset_s(ch, size + 1, 0x00, size + 1);
69 if (memcpy_s(ch, size, data, size) != EOK) {
70 std::cout << "copy failed." << std::endl;
71 free(ch);
72 ch = nullptr;
73 return 0;
74 }
75
76 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
77 free(ch);
78 ch = nullptr;
79 return 0;
80 }
81
82