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 "formrendermgrinner_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_render_mgr_inner.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 FormRenderMgrInner formRenderMgrInner;
43 FormRecord formRecord;
44 Want want;
45 sptr<IRemoteObject> hostToken = nullptr;
46 formRenderMgrInner.RenderForm(formRecord, want, hostToken);
47 WantParams wantParams;
48 bool mergeData = *data % ENABLE;
49 FormProviderData formProviderData;
50 formRenderMgrInner.UpdateRenderingForm(formRecord, formProviderData, wantParams, mergeData);
51 int64_t formId = static_cast<int64_t>(GetU32Data(data));
52 std::string compId(data, size);
53 formRenderMgrInner.StopRenderingForm(formId, formRecord, compId);
54 std::vector<FormRecord> formRecords;
55 formRecords.emplace_back(formRecord);
56 std::string bundleName(data, size);
57 int32_t userId = static_cast<int32_t>(GetU32Data(data));
58 formRenderMgrInner.ReloadForm(std::move(formRecords), bundleName, userId);
59 formRenderMgrInner.StopRenderingFormCallback(formId, want);
60 sptr<FormRenderConnection> connection = new (std::nothrow) FormRenderConnection(formRecord, wantParams);
61 formRenderMgrInner.AddConnection(formId, connection);
62 formRenderMgrInner.RemoveConnection(formId);
63 sptr<IRemoteObject> renderRemoteObj = nullptr;
64 formRenderMgrInner.AddRenderDeathRecipient(renderRemoteObj);
65 formRenderMgrInner.RerenderAllForms();
66 sptr<IRemoteObject> host = nullptr;
67 formRenderMgrInner.CleanFormHost(host);
68 formRenderMgrInner.OnRenderingBlock(bundleName);
69 formRenderMgrInner.ReleaseRenderer(formId, formRecord, compId);
70 formRenderMgrInner.PostOnUnlockTask();
71 formRenderMgrInner.PostSetVisibleChangeTask(formId, true);
72 formRenderMgrInner.GetReRenderCount();
73 formRenderMgrInner.GetRenderRemoteObj();
74 sptr<IFormRender> remoteObject = nullptr;
75 formRenderMgrInner.SetRenderRemoteObj(remoteObject);
76 std::vector<int64_t> formIds;
77 sptr<IRemoteObject> remoteObjectOfHost = nullptr;
78 formRenderMgrInner.RecycleForms(formIds, want, remoteObjectOfHost);
79 formRenderMgrInner.RecoverForms(formIds, wantParams);
80 formRenderMgrInner.DisconnectRenderService(connection, size);
81 formRenderMgrInner.RemoveHostToken(host);
82 formRenderMgrInner.NotifyHostRenderServiceIsDead();
83 formRenderMgrInner.FillBundleInfo(want, bundleName);
84 formRenderMgrInner.CheckIfFormRecycled(formRecord, want);
85 formRenderMgrInner.GetConnectionAndRenderForm(formRecord, want);
86 sptr<IRemoteObject> renderObj = nullptr;
87 formRenderMgrInner.GetRenderObject(renderObj);
88 return true;
89 }
90 }
91
92 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)93 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
94 {
95 /* Run your code on data */
96 if (data == nullptr) {
97 return 0;
98 }
99
100 if (size < OHOS::U32_AT_SIZE) {
101 return 0;
102 }
103
104 /* Validate the length of size */
105 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
106 return 0;
107 }
108
109 char* ch = (char *)malloc(size + 1);
110 if (ch == nullptr) {
111 return 0;
112 }
113
114 (void)memset_s(ch, size + 1, 0x00, size + 1);
115 if (memcpy_s(ch, size + 1, data, size) != EOK) {
116 free(ch);
117 ch = nullptr;
118 return 0;
119 }
120
121 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
122 free(ch);
123 ch = nullptr;
124 return 0;
125 }
126
127