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 uint8_t ENABLE = 2;
GetU32Data(const char * ptr)35 uint32_t GetU32Data(const char* ptr)
36 {
37 // convert fuzz input data to an integer
38 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
39 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)40 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
41 {
42 FormRenderMgr formRenderMgr;
43 FormRecord formRecord;
44 WantParams wantParams;
45 sptr<IRemoteObject> hostToken = nullptr;
46 formRenderMgr.RenderForm(formRecord, wantParams, hostToken);
47 int64_t formId = static_cast<int64_t>(GetU32Data(data));
48 FormProviderData formProviderData;
49 bool mergeData = *data % ENABLE;
50 formRenderMgr.UpdateRenderingForm(formId, formProviderData, wantParams, mergeData);
51 std::vector<int64_t> formIds;
52 formIds.emplace_back(formId);
53 std::string bundleName(data, size);
54 int32_t userId = static_cast<int32_t>(GetU32Data(data));
55 formRenderMgr.ReloadForm(std::move(formIds), bundleName, userId);
56 std::string compId(data, size);
57 formRenderMgr.StopRenderingForm(formId, formRecord, compId);
58 Want want;
59 formRenderMgr.RenderFormCallback(formId, want);
60 formRenderMgr.StopRenderingFormCallback(formId, want);
61 sptr<FormRenderConnection> connection = new (std::nothrow) FormRenderConnection(formRecord, wantParams);
62 formRenderMgr.AddConnection(formId, connection);
63 formRenderMgr.RerenderAllForms();
64 sptr<IRemoteObject> host = nullptr;
65 formRenderMgr.CleanFormHost(host);
66 sptr<IRemoteObject> remoteObject = nullptr;
67 formRenderMgr.AddRenderDeathRecipient(remoteObject);
68 formRenderMgr.IsNeedRender(formId);
69 formRenderMgr.RemoveHostToken(host);
70 formRenderMgr.NotifyHostRenderServiceIsDead();
71 int32_t errorCode = static_cast<int32_t>(GetU32Data(data));
72 formRenderMgr.HandleConnectFailed(formId, errorCode);
73 formRenderMgr.IsRerenderForRenderServiceDied(formId);
74 return true;
75 }
76 }
77
78 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)79 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
80 {
81 /* Run your code on data */
82 if (data == nullptr) {
83 return 0;
84 }
85
86 if (size < OHOS::U32_AT_SIZE) {
87 return 0;
88 }
89
90 /* Validate the length of size */
91 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
92 return 0;
93 }
94
95 char* ch = (char *)malloc(size + 1);
96 if (ch == nullptr) {
97 return 0;
98 }
99
100 (void)memset_s(ch, size + 1, 0x00, size + 1);
101 if (memcpy_s(ch, size, data, size) != EOK) {
102 free(ch);
103 ch = nullptr;
104 return 0;
105 }
106
107 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
108 free(ch);
109 ch = nullptr;
110 return 0;
111 }
112
113