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 "defaultappproxy_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "default_app_proxy.h"
23 #include "securec.h"
24
25 using Want = OHOS::AAFwk::Want;
26 using namespace OHOS::AppExecFwk;
27 namespace OHOS {
28 constexpr size_t U32_AT_SIZE = 4;
29 constexpr size_t MESSAGE_SIZE = 4;
30 constexpr size_t DCAMERA_SHIFT_24 = 24;
31 constexpr size_t DCAMERA_SHIFT_16 = 16;
32 constexpr size_t DCAMERA_SHIFT_8 = 8;
33
GetU32Data(const char * ptr)34 uint32_t GetU32Data(const char* ptr)
35 {
36 return (ptr[0] << DCAMERA_SHIFT_24) | (ptr[1] << DCAMERA_SHIFT_16) | (ptr[2] << DCAMERA_SHIFT_8) | (ptr[3]);
37 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)38 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
39 {
40 Want want;
41 std::string type(data, size);
42 bool isDefaultApp = true;
43 int32_t userId = reinterpret_cast<uintptr_t>(data);
44 MessageParcel datas;
45 std::u16string descriptor = DefaultAppProxy::GetDescriptor();
46 datas.WriteInterfaceToken(descriptor);
47 datas.WriteBuffer(data, size);
48 datas.RewindRead(0);
49 BundleInfo bundleInfo;
50 MessageParcel reply;
51 sptr<IRemoteObject> object;
52 DefaultAppProxy defaultAppProxy(object);
53 defaultAppProxy.IsDefaultApplication(type, isDefaultApp);
54 defaultAppProxy.GetDefaultApplication(userId, type, bundleInfo);
55 defaultAppProxy.SetDefaultApplication(userId, type, want);
56 defaultAppProxy.ResetDefaultApplication(userId, type);
57 return true;
58 }
59 }
60
61 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)62 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
63 {
64 /* Run your code on data */
65 if (data == nullptr) {
66 return 0;
67 }
68
69 if (size < OHOS::U32_AT_SIZE) {
70 return 0;
71 }
72
73 char* ch = static_cast<char*>(malloc(size + 1));
74 if (ch == nullptr) {
75 return 0;
76 }
77
78 (void)memset_s(ch, size + 1, 0x00, size + 1);
79 if (memcpy_s(ch, size, data, size) != EOK) {
80 free(ch);
81 ch = nullptr;
82 return 0;
83 }
84 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
85 free(ch);
86 ch = nullptr;
87 return 0;
88 }