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 "formhostdelegatestub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "form_host_delegate_stub.h"
22 #include "securec.h"
23
24 using namespace OHOS::AppExecFwk;
25
26 namespace OHOS {
27 constexpr size_t U32_AT_SIZE = 4;
28 const std::u16string FORMMGR_INTERFACE_TOKEN = u"ohos.appexecfwk.FormMgr";
29 class FormHostDelegateStubFuzzTest : public FormHostDelegateStub {
30 public:
31 FormHostDelegateStubFuzzTest() = default;
32 virtual ~FormHostDelegateStubFuzzTest() = default;
RouterEvent(const int64_t formId,const Want & want)33 int32_t RouterEvent(const int64_t formId, const Want &want) override
34 {
35 return 0;
36 }
RequestOverflow(const int64_t formId,const OverflowInfo & overflowInfo,bool isOverflow)37 ErrCode RequestOverflow(const int64_t formId, const OverflowInfo &overflowInfo, bool isOverflow) override
38 {
39 return ERR_OK;
40 }
ChangeSceneAnimationState(const int64_t formId,int32_t state)41 ErrCode ChangeSceneAnimationState(const int64_t formId, int32_t state) override
42 {
43 return ERR_OK;
44 }
GetFormRect(const int64_t formId,Rect & rect)45 ErrCode GetFormRect(const int64_t formId, Rect &rect) override
46 {
47 return ERR_OK;
48 }
GetLiveFormStatus(std::unordered_map<std::string,std::string> & liveFormStatusMap)49 ErrCode GetLiveFormStatus(std::unordered_map<std::string, std::string> &liveFormStatusMap) override
50 {
51 return ERR_OK;
52 }
53 };
GetU32Data(const char * ptr)54 uint32_t GetU32Data(const char* ptr)
55 {
56 // convert fuzz input data to an integer
57 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
58 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)59 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
60 {
61 FormHostDelegateStubFuzzTest formHostDelegateStub;
62 uint32_t code = GetU32Data(data);
63 MessageParcel datas;
64 datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
65 datas.WriteBuffer(data, size);
66 datas.RewindRead(0);
67 MessageParcel reply;
68 MessageOption option;
69 formHostDelegateStub.OnRemoteRequest(code, datas, reply, option);
70 return true;
71 }
72 }
73
74 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)75 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
76 {
77 /* Run your code on data */
78 if (data == nullptr) {
79 return 0;
80 }
81
82 if (size < OHOS::U32_AT_SIZE) {
83 return 0;
84 }
85
86 char* ch = static_cast<char*>(malloc(size + 1));
87 if (ch == nullptr) {
88 return 0;
89 }
90
91 (void)memset_s(ch, size + 1, 0x00, size + 1);
92 if (memcpy_s(ch, size + 1, data, size) != EOK) {
93 free(ch);
94 ch = nullptr;
95 return 0;
96 }
97
98 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
99 free(ch);
100 ch = nullptr;
101 return 0;
102 }
103
104