1 /*
2 * Copyright (c) 2022 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 "pointerstyle_fuzzer.h"
17
18 #include "ipc_skeleton.h"
19 #include "securec.h"
20
21 #include "input_manager.h"
22
23 namespace OHOS {
24 namespace MMI {
GetObject(const uint8_t * data,size_t size,T & object)25 template <class T> size_t GetObject(const uint8_t *data, size_t size, T &object)
26 {
27 size_t objectSize = sizeof(object);
28 if (objectSize > size) {
29 return 0;
30 }
31 errno_t ret = memcpy_s(&object, objectSize, data, objectSize);
32 if (ret != EOK) {
33 return 0;
34 }
35 return objectSize;
36 }
37
GetString(const uint8_t * data,size_t size,char * object,size_t objectSize)38 size_t GetString(const uint8_t *data, size_t size, char *object, size_t objectSize)
39 {
40 if (objectSize > size) {
41 return 0;
42 }
43 errno_t ret = memcpy_s(&object, objectSize, data, objectSize);
44 if (ret != EOK) {
45 return 0;
46 }
47 return objectSize;
48 }
49
UpdateHotAreas(const uint8_t * data,size_t size,WindowInfo & windowInfo)50 void UpdateHotAreas(const uint8_t *data, size_t size, WindowInfo &windowInfo)
51 {
52 size_t startPos = 0;
53 std::vector<Rect> defaultHotAreasInfo;
54 std::vector<Rect> pointerHotAreasInfo;
55 for (size_t j = 0; j < WindowInfo::MAX_HOTAREA_COUNT; ++j) {
56 Rect defaultRect;
57 startPos += GetObject<int32_t>(data + startPos, size - startPos, defaultRect.height);
58 startPos += GetObject<int32_t>(data + startPos, size - startPos, defaultRect.width);
59 startPos += GetObject<int32_t>(data + startPos, size - startPos, defaultRect.x);
60 startPos += GetObject<int32_t>(data + startPos, size - startPos, defaultRect.y);
61 defaultHotAreasInfo.push_back(defaultRect);
62 Rect pointerRect;
63 startPos += GetObject<int32_t>(data + startPos, size - startPos, pointerRect.height);
64 startPos += GetObject<int32_t>(data + startPos, size - startPos, pointerRect.width);
65 startPos += GetObject<int32_t>(data + startPos, size - startPos, pointerRect.x);
66 startPos += GetObject<int32_t>(data + startPos, size - startPos, pointerRect.y);
67 pointerHotAreasInfo.push_back(pointerRect);
68 }
69 windowInfo.defaultHotAreas = defaultHotAreasInfo;
70 windowInfo.pointerHotAreas = pointerHotAreasInfo;
71 }
72
UpdateDisplayInfo(const uint8_t * data,size_t size,int32_t windowId)73 void UpdateDisplayInfo(const uint8_t *data, size_t size, int32_t windowId)
74 {
75 DisplayGroupInfo displayGroupInfo;
76 size_t startPos = 0;
77 size_t stringSize = 4;
78 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayGroupInfo.width);
79 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayGroupInfo.height);
80 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayGroupInfo.focusWindowId);
81 std::vector<WindowInfo> windowsInfo;
82 std::vector<DisplayInfo> displaysInfo;
83 WindowInfo windowInfo;
84 windowInfo.id = windowId;
85 windowInfo.pid = IPCSkeleton::GetCallingPid();
86 startPos += GetObject<int32_t>(data + startPos, size - startPos, windowInfo.uid);
87 startPos += GetObject<int32_t>(data + startPos, size - startPos, windowInfo.area.x);
88 startPos += GetObject<int32_t>(data + startPos, size - startPos, windowInfo.area.y);
89 startPos += GetObject<int32_t>(data + startPos, size - startPos, windowInfo.area.width);
90 startPos += GetObject<int32_t>(data + startPos, size - startPos, windowInfo.area.height);
91 UpdateHotAreas(data, size, windowInfo);
92 windowsInfo.push_back(windowInfo);
93
94 DisplayInfo displayInfo;
95 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayInfo.id);
96 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayInfo.x);
97 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayInfo.y);
98 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayInfo.width);
99 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayInfo.height);
100 startPos += GetObject<int32_t>(data + startPos, size - startPos, displayInfo.dpi);
101 char name[] = "name";
102 startPos += GetString(data + startPos, size - startPos, name, stringSize);
103 displayInfo.name = name;
104 char uniq[] = "uniq";
105 GetString(data + startPos, size - startPos, uniq, stringSize);
106 displayInfo.uniq = uniq;
107 displaysInfo.push_back(displayInfo);
108 displayGroupInfo.windowsInfo = windowsInfo;
109 displayGroupInfo.displaysInfo = displaysInfo;
110 InputManager::GetInstance()->UpdateDisplayInfo(displayGroupInfo);
111 }
112
PointerStyleFuzzTest(const uint8_t * data,size_t size)113 void PointerStyleFuzzTest(const uint8_t *data, size_t size)
114 {
115 int32_t windowId;
116 size_t startPos = 0;
117 startPos += GetObject<int32_t>(data + startPos, size - startPos, windowId);
118 UpdateDisplayInfo(data, size, windowId);
119 PointerStyle pointerStyle;
120 GetObject<int32_t>(data + startPos, size - startPos, pointerStyle.id);
121 InputManager::GetInstance()->SetPointerStyle(windowId, pointerStyle);
122 InputManager::GetInstance()->GetPointerStyle(windowId, pointerStyle);
123 }
124 } // MMI
125 } // OHOS
126
127 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)128 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
129 {
130 /* Run your code on data */
131 OHOS::MMI::PointerStyleFuzzTest(data, size);
132 return 0;
133 }