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 "formrendermgr_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_render_mgr.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 FOO_MAX_LEN = 1024;
33 constexpr size_t U32_AT_SIZE = 4;
34 constexpr int32_t MAIN_CALLING_USER_ID = 100 * 200000;
35 constexpr uint8_t ENABLE = 2;
GetU32Data(const char * ptr)36 uint32_t GetU32Data(const char* ptr)
37 {
38 // convert fuzz input data to an integer
39 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
40 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)41 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
42 {
43 FormRenderMgr formRenderMgr;
44 FormRecord formRecord;
45 WantParams wantParams;
46 sptr<IRemoteObject> hostToken = nullptr;
47 formRenderMgr.RenderForm(formRecord, wantParams, hostToken);
48 int64_t formId = static_cast<int64_t>(GetU32Data(data));
49 FormProviderData formProviderData;
50 bool mergeData = *data % ENABLE;
51 formRenderMgr.UpdateRenderingForm(formId, formProviderData, wantParams, mergeData);
52 std::vector<FormRecord> formRecords;
53 formRecords.emplace_back(formRecord);
54 std::string bundleName(data, size);
55 int32_t userId = static_cast<int32_t>(GetU32Data(data));
56 formRenderMgr.ReloadForm(std::move(formRecords), bundleName, userId);
57 std::string compId(data, size);
58 formRenderMgr.StopRenderingForm(formId, formRecord, compId);
59 Want want;
60 formRenderMgr.RenderFormCallback(formId, want);
61 formRenderMgr.StopRenderingFormCallback(formId, want);
62 sptr<FormRenderConnection> connection = new (std::nothrow) FormRenderConnection(formRecord, wantParams);
63 formRenderMgr.AddConnection(formId, connection, formRecord);
64 sptr<IRemoteObject> host = nullptr;
65 formRenderMgr.CleanFormHost(host, OHOS::MAIN_CALLING_USER_ID);
66 sptr<IRemoteObject> remoteObject = nullptr;
67 formRenderMgr.AddRenderDeathRecipient(remoteObject, formRecord);
68 formRenderMgr.IsNeedRender(formId);
69 int32_t errorCode = static_cast<int32_t>(GetU32Data(data));
70 formRenderMgr.HandleConnectFailed(formId, errorCode);
71 formRenderMgr.IsRerenderForRenderServiceDied(formId);
72 return true;
73 }
74 }
75
76 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)77 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
78 {
79 /* Run your code on data */
80 if (data == nullptr) {
81 return 0;
82 }
83
84 if (size < OHOS::U32_AT_SIZE) {
85 return 0;
86 }
87
88 /* Validate the length of size */
89 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
90 return 0;
91 }
92
93 char* ch = static_cast<char*>(malloc(size + 1));
94 if (ch == nullptr) {
95 return 0;
96 }
97
98 (void)memset_s(ch, size + 1, 0x00, size + 1);
99 if (memcpy_s(ch, size + 1, data, size) != EOK) {
100 free(ch);
101 ch = nullptr;
102 return 0;
103 }
104
105 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
106 free(ch);
107 ch = nullptr;
108 return 0;
109 }
110
111