1 /*
2 * Copyright (c) 2023 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 "formrenderproxy_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_render_proxy.h"
24 #undef private
25 #undef protected
26 #include "message_parcel.h"
27 #include "securec.h"
28
29 using namespace OHOS::AppExecFwk;
30
31 namespace OHOS {
32 constexpr size_t U32_AT_SIZE = 4;
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 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)38 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
39 {
40 sptr<IRemoteObject> impl = nullptr;
41 FormRenderProxy formRenderProxy(impl);
42 FormJsInfo formJsInfo;
43 Want want;
44 sptr<IRemoteObject> callerToken = nullptr;
45 formRenderProxy.RenderForm(formJsInfo, want, callerToken);
46 formRenderProxy.StopRenderingForm(formJsInfo, want, callerToken);
47 sptr<IRemoteObject> hostToken = nullptr;
48 formRenderProxy.CleanFormHost(hostToken);
49 MessageParcel datas;
50 formRenderProxy.WriteInterfaceToken(datas);
51 int64_t formId = static_cast<int64_t>(GetU32Data(data));
52 std::vector<FormJsInfo> formJsInfos;
53 formJsInfo.formId = formId;
54 formJsInfos.emplace_back(formJsInfo);
55 formRenderProxy.ReloadForm(std::move(formJsInfos), want);
56 return true;
57 }
58 }
59
60 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)61 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
62 {
63 /* Run your code on data */
64 if (data == nullptr) {
65 return 0;
66 }
67
68 if (size < OHOS::U32_AT_SIZE) {
69 return 0;
70 }
71
72 char* ch = static_cast<char*>(malloc(size + 1));
73 if (ch == nullptr) {
74 return 0;
75 }
76
77 (void)memset_s(ch, size + 1, 0x00, size + 1);
78 if (memcpy_s(ch, size + 1, data, size) != EOK) {
79 free(ch);
80 ch = nullptr;
81 return 0;
82 }
83
84 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
85 free(ch);
86 ch = nullptr;
87 return 0;
88 }
89
90