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 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 Parcel parcel;
37 sptr<IWantSender> sender = nullptr;
38 if (parcel.WriteBuffer(data, size)) {
39 sender = iface_cast<AAFwk::IWantSender>((static_cast<MessageParcel*>(&parcel))->ReadRemoteObject());
40 }
41 if (sender) {
42 WantAgentClient::GetInstance().CancelWantSender(sender);
43 }
44
45 return true;
46 }
47 }
48
49 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)50 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
51 {
52 /* Run your code on data */
53 if (data == nullptr) {
54 std::cout << "invalid data" << std::endl;
55 return 0;
56 }
57
58 /* Validate the length of size */
59 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
60 return 0;
61 }
62
63 char* ch = static_cast<char*>(malloc(size + 1));
64 if (ch == nullptr) {
65 std::cout << "malloc failed." << std::endl;
66 return 0;
67 }
68
69 (void)memset_s(ch, size + 1, 0x00, size + 1);
70 if (memcpy_s(ch, size, data, size) != EOK) {
71 std::cout << "copy failed." << std::endl;
72 free(ch);
73 ch = nullptr;
74 return 0;
75 }
76
77 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
78 free(ch);
79 ch = nullptr;
80 return 0;
81 }
82
83