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1 /*
2  * Copyright (c) 2021-2023 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 "input_event_transmission/input_event_serialization.h"
17 
18 #include "extra_data.h"
19 #ifdef OHOS_BUILD_ENABLE_SECURITY_PART
20 #include "sec_comp_enhance_kit.h"
21 #endif // OHOS_BUILD_ENABLE_SECURITY_PART
22 
23 #include "devicestatus_define.h"
24 
25 #undef LOG_TAG
26 #define LOG_TAG "InputEventSerialization"
27 
28 namespace OHOS {
29 namespace Msdp {
30 namespace DeviceStatus {
31 namespace Cooperate {
32 namespace {
33 constexpr int32_t MAX_KEY_SIZE { 395 };
34 } // namespace
35 
KeyEventToNetPacket(const std::shared_ptr<MMI::KeyEvent> key,NetPacket & pkt)36 int32_t InputEventSerialization::KeyEventToNetPacket(
37     const std::shared_ptr<MMI::KeyEvent> key, NetPacket &pkt)
38 {
39     CHKPR(key, RET_ERR);
40     if (SerializeInputEvent(key, pkt) != RET_OK) {
41         FI_HILOGE("Serialize input event failed");
42         return RET_ERR;
43     }
44     pkt << key->GetKeyCode() << key->GetKeyAction() << key->GetKeyIntention();
45     auto keys = key->GetKeyItems();
46     int32_t size = static_cast<int32_t>(keys.size());
47     if (size > MAX_KEY_SIZE) {
48         FI_HILOGE("Key exceeds the max range");
49         return RET_ERR;
50     }
51     pkt << size;
52     for (const auto &item : keys) {
53         pkt << item.GetKeyCode() << item.GetDownTime()
54             << item.GetDeviceId() << item.IsPressed() << item.GetUnicode();
55     }
56     pkt << key->GetFunctionKey(MMI::KeyEvent::NUM_LOCK_FUNCTION_KEY)
57         << key->GetFunctionKey(MMI::KeyEvent::CAPS_LOCK_FUNCTION_KEY)
58         << key->GetFunctionKey(MMI::KeyEvent::SCROLL_LOCK_FUNCTION_KEY);
59     if (pkt.ChkRWError()) {
60         FI_HILOGE("Packet write key event failed");
61         return RET_ERR;
62     }
63     return RET_OK;
64 }
65 
NetPacketToKeyEvent(NetPacket & pkt,std::shared_ptr<MMI::KeyEvent> key)66 int32_t InputEventSerialization::NetPacketToKeyEvent(NetPacket &pkt, std::shared_ptr<MMI::KeyEvent> key)
67 {
68     CHKPR(key, RET_ERR);
69     if (DeserializeInputEvent(pkt, key) != RET_OK) {
70         FI_HILOGE("Deserialize input event failed");
71         return RET_ERR;
72     }
73     int32_t data = 0;
74     pkt >> data;
75     key->SetKeyCode(data);
76     pkt >> data;
77     key->SetKeyAction(data);
78     pkt >> data;
79     key->SetKeyIntention(data);
80     int32_t size = 0;
81     pkt >> size;
82     if (size > MAX_KEY_SIZE) {
83         FI_HILOGE("Key exceeds the max range");
84         return RET_ERR;
85     }
86     if (pkt.ChkRWError()) {
87         FI_HILOGE("Packet read size failed");
88         return RET_ERR;
89     }
90     bool isPressed = false;
91     for (int32_t i = 0; i < size; i++) {
92         MMI::KeyEvent::KeyItem keyItem;
93         pkt >> data;
94         keyItem.SetKeyCode(data);
95         int64_t datatime = 0;
96         pkt >> datatime;
97         keyItem.SetDownTime(datatime);
98         pkt >> data;
99         keyItem.SetDeviceId(data);
100         pkt >> isPressed;
101         if (pkt.ChkRWError()) {
102             FI_HILOGE("Packet read item isPressed failed");
103             return RET_ERR;
104         }
105         keyItem.SetPressed(isPressed);
106         uint32_t unicode;
107         pkt >> unicode;
108         keyItem.SetUnicode(unicode);
109         key->AddKeyItem(keyItem);
110     }
111     ReadFunctionKeys(pkt, key);
112     return RET_OK;
113 }
114 
ReadFunctionKeys(NetPacket & pkt,std::shared_ptr<MMI::KeyEvent> key)115 void InputEventSerialization::ReadFunctionKeys(NetPacket &pkt, std::shared_ptr<MMI::KeyEvent> key)
116 {
117     CHKPV(key);
118     bool state = false;
119     pkt >> state;
120     key->SetFunctionKey(MMI::KeyEvent::NUM_LOCK_FUNCTION_KEY, state);
121     pkt >> state;
122     key->SetFunctionKey(MMI::KeyEvent::CAPS_LOCK_FUNCTION_KEY, state);
123     pkt >> state;
124     key->SetFunctionKey(MMI::KeyEvent::SCROLL_LOCK_FUNCTION_KEY, state);
125 }
126 
SwitchEventToNetPacket(const std::shared_ptr<MMI::SwitchEvent> swEvent,NetPacket & pkt)127 int32_t InputEventSerialization::SwitchEventToNetPacket(
128     const std::shared_ptr<MMI::SwitchEvent> swEvent, NetPacket &pkt)
129 {
130     if (SerializeInputEvent(swEvent, pkt) != RET_OK) {
131         FI_HILOGE("Serialize input event failed");
132         return RET_ERR;
133     }
134     pkt << swEvent->GetSwitchValue() << swEvent->GetSwitchMask();
135     if (pkt.ChkRWError()) {
136         FI_HILOGE("Packet write key event failed");
137         return RET_ERR;
138     }
139     return RET_OK;
140 }
141 
NetPacketToSwitchEvent(NetPacket & pkt,std::shared_ptr<MMI::SwitchEvent> swEvent)142 int32_t InputEventSerialization::NetPacketToSwitchEvent(NetPacket &pkt, std::shared_ptr<MMI::SwitchEvent> swEvent)
143 {
144     if (DeserializeInputEvent(pkt, swEvent) != RET_OK) {
145         FI_HILOGE("Deserialize input event failed");
146         return RET_ERR;
147     }
148     int32_t data = 0;
149     pkt >> data;
150     swEvent->SetSwitchValue(data);
151     pkt >> data;
152     swEvent->SetSwitchMask(data);
153     return RET_OK;
154 }
155 
SerializeInputEvent(std::shared_ptr<MMI::InputEvent> event,NetPacket & pkt)156 int32_t InputEventSerialization::SerializeInputEvent(std::shared_ptr<MMI::InputEvent> event, NetPacket &pkt)
157 {
158     CHKPR(event, ERROR_NULL_POINTER);
159     pkt << event->GetEventType() << event->GetId() << event->GetActionTime()
160         << event->GetAction() << event->GetActionStartTime() << event->GetSensorInputTime() << event->GetDeviceId()
161         << event->GetTargetDisplayId() << event->GetTargetWindowId()
162         << event->GetAgentWindowId() << event->GetFlag();
163     if (pkt.ChkRWError()) {
164         FI_HILOGE("Serialize packet is failed");
165         return RET_ERR;
166     }
167     return RET_OK;
168 }
169 
DeserializeInputEvent(NetPacket & pkt,std::shared_ptr<MMI::InputEvent> event)170 int32_t InputEventSerialization::DeserializeInputEvent(NetPacket &pkt, std::shared_ptr<MMI::InputEvent> event)
171 {
172     CHKPR(event, ERROR_NULL_POINTER);
173     int32_t tField = 0;
174     pkt >> tField;
175     pkt >> tField;
176     event->SetId(tField);
177     int64_t rField = 0;
178     pkt >> rField;
179     event->SetActionTime(rField);
180     pkt >> tField;
181     event->SetAction(tField);
182     pkt >> rField;
183     event->SetActionStartTime(rField);
184     uint64_t sensorTime;
185     pkt >> sensorTime;
186     event->SetSensorInputTime(sensorTime);
187     pkt >> tField;
188     event->SetDeviceId(tField);
189     pkt >> tField;
190     event->SetTargetDisplayId(tField);
191     pkt >> tField;
192     event->SetTargetWindowId(tField);
193     pkt >> tField;
194     event->SetAgentWindowId(tField);
195     uint32_t tFlag = MMI::InputEvent::EVENT_FLAG_NONE;
196     pkt >> tFlag;
197     if (pkt.ChkRWError()) {
198         FI_HILOGE("Deserialize packet is failed");
199         return RET_ERR;
200     }
201     event->AddFlag(tFlag);
202     return RET_OK;
203 }
204 
SerializeBaseInfo(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)205 int32_t InputEventSerialization::SerializeBaseInfo(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
206 {
207     int32_t pointerAction = event->GetPointerAction();
208     int32_t pointerId = event->GetPointerId();
209     int32_t sourceType = event->GetSourceType();
210     int32_t btnId = event->GetButtonId();
211     int32_t fingerCnt = event->GetFingerCount();
212     float zOrder = event->GetZOrder();
213 
214     pkt << pointerAction << pointerId << sourceType << btnId << fingerCnt << zOrder;
215     if (pkt.ChkRWError()) {
216         FI_HILOGE("Failed to serialize base information of pointer event");
217         return RET_ERR;
218     }
219     return RET_OK;
220 }
221 
DeserializeBaseInfo(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)222 int32_t InputEventSerialization::DeserializeBaseInfo(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
223 {
224     int32_t pointerAction {};
225     int32_t pointerId {};
226     int32_t sourceType {};
227     int32_t btnId {};
228     int32_t fingerCnt {};
229     float zOrder {};
230 
231     pkt >> pointerAction >> pointerId >> sourceType >> btnId >> fingerCnt >> zOrder;
232     if (pkt.ChkRWError()) {
233         FI_HILOGE("Failed to deserialize base information of pointer event");
234         return RET_ERR;
235     }
236     event->SetPointerAction(pointerAction);
237     event->SetPointerId(pointerId);
238     event->SetSourceType(sourceType);
239     event->SetButtonId(btnId);
240     event->SetFingerCount(fingerCnt);
241     event->SetZOrder(zOrder);
242     return RET_OK;
243 }
244 
SerializeAxes(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)245 int32_t InputEventSerialization::SerializeAxes(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
246 {
247     uint32_t axes = event->GetAxes();
248     pkt << axes;
249 
250     for (int32_t i = MMI::PointerEvent::AXIS_TYPE_UNKNOWN; i < MMI::PointerEvent::AXIS_TYPE_MAX; ++i) {
251         if (event->HasAxis(static_cast<MMI::PointerEvent::AxisType>(i))) {
252             double axisValue = event->GetAxisValue(static_cast<MMI::PointerEvent::AxisType>(i));
253             pkt << axisValue;
254         }
255     }
256     if (pkt.ChkRWError()) {
257         FI_HILOGE("Failed to serialize axes");
258         return RET_ERR;
259     }
260     return RET_OK;
261 }
262 
DeserializeAxes(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)263 int32_t InputEventSerialization::DeserializeAxes(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
264 {
265     uint32_t axes {};
266     double axisValue {};
267 
268     pkt >> axes;
269 
270     for (int32_t i = MMI::PointerEvent::AXIS_TYPE_UNKNOWN; i < MMI::PointerEvent::AXIS_TYPE_MAX; ++i) {
271         if (MMI::PointerEvent::HasAxis(axes, static_cast<MMI::PointerEvent::AxisType>(i))) {
272             pkt >> axisValue;
273             event->SetAxisValue(static_cast<MMI::PointerEvent::AxisType>(i), axisValue);
274         }
275     }
276     if (pkt.ChkRWError()) {
277         FI_HILOGE("Failed to deserialize axes");
278         return RET_ERR;
279     }
280     return RET_OK;
281 }
282 
SerializePressedButtons(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)283 int32_t InputEventSerialization::SerializePressedButtons(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
284 {
285     std::set<int32_t> pressedBtns = event->GetPressedButtons();
286     std::set<int32_t>::size_type nPressed = pressedBtns.size();
287 
288     pkt << nPressed;
289 
290     for (int32_t btnId : pressedBtns) {
291         pkt << btnId;
292     }
293     if (pkt.ChkRWError()) {
294         FI_HILOGE("Failed to serialize pressed buttons");
295         return RET_ERR;
296     }
297     return RET_OK;
298 }
299 
DeserializePressedButtons(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)300 int32_t InputEventSerialization::DeserializePressedButtons(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
301 {
302     std::set<int32_t>::size_type nPressed;
303     int32_t btnId {};
304 
305     pkt >> nPressed;
306 
307     for (; nPressed > 0; --nPressed) {
308         pkt >> btnId;
309         event->SetButtonPressed(btnId);
310     }
311     if (pkt.ChkRWError()) {
312         FI_HILOGE("Failed to deserialize pressed buttons");
313         return RET_ERR;
314     }
315     return RET_OK;
316 }
317 
SerializePointerItem(NetPacket & pkt,MMI::PointerEvent::PointerItem & item)318 int32_t InputEventSerialization::SerializePointerItem(NetPacket &pkt, MMI::PointerEvent::PointerItem &item)
319 {
320     pkt << item;
321     if (pkt.ChkRWError()) {
322         FI_HILOGE("Failed to serialize pointer item");
323         return RET_ERR;
324     }
325     return RET_OK;
326 }
327 
DeserializePointerItem(NetPacket & pkt,MMI::PointerEvent::PointerItem & item)328 int32_t InputEventSerialization::DeserializePointerItem(NetPacket &pkt, MMI::PointerEvent::PointerItem &item)
329 {
330     pkt >> item;
331     if (pkt.ChkRWError()) {
332         FI_HILOGE("Failed to deserialize pointer item");
333         return RET_ERR;
334     }
335     return RET_OK;
336 }
337 
SerializePointers(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)338 int32_t InputEventSerialization::SerializePointers(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
339 {
340     std::vector<int32_t> pointerIds = event->GetPointerIds();
341     std::vector<int32_t>::size_type nPointers = pointerIds.size();
342 
343     pkt << nPointers;
344 
345     for (const auto &pointerId : pointerIds) {
346         MMI::PointerEvent::PointerItem item;
347 
348         if (!event->GetPointerItem(pointerId, item)) {
349             FI_HILOGE("Get pointer item failed");
350             return RET_ERR;
351         }
352         if (SerializePointerItem(pkt, item) != RET_OK) {
353             FI_HILOGE("Failed to serialize one pointer item");
354             return RET_ERR;
355         }
356     }
357     if (pkt.ChkRWError()) {
358         FI_HILOGE("Failed to serialize pointers");
359         return RET_ERR;
360     }
361     return RET_OK;
362 }
363 
DeserializePointers(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)364 int32_t InputEventSerialization::DeserializePointers(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
365 {
366     std::vector<int32_t>::size_type nPointers;
367     pkt >> nPointers;
368 
369     for (; nPointers > 0; --nPointers) {
370         MMI::PointerEvent::PointerItem item;
371 
372         if (DeserializePointerItem(pkt, item) != RET_OK) {
373             FI_HILOGE("Failed to deserialize one pointer item");
374             return RET_ERR;
375         }
376         event->AddPointerItem(item);
377     }
378     if (pkt.ChkRWError()) {
379         FI_HILOGE("Failed to deserialize pointers");
380         return RET_ERR;
381     }
382     return RET_OK;
383 }
384 
SerializePressedKeys(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)385 int32_t InputEventSerialization::SerializePressedKeys(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
386 {
387     std::vector<int32_t> pressedKeys = event->GetPressedKeys();
388     std::vector<int32_t>::size_type nPressed = pressedKeys.size();
389 
390     pkt << nPressed;
391 
392     for (std::vector<int32_t>::size_type i = 0; i < nPressed; ++i) {
393         int32_t keyCode = pressedKeys[i];
394         pkt << keyCode;
395     }
396     if (pkt.ChkRWError()) {
397         FI_HILOGE("Failed to serialize pressed keys");
398         return RET_ERR;
399     }
400     return RET_OK;
401 }
402 
DeserializePressedKeys(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)403 int32_t InputEventSerialization::DeserializePressedKeys(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
404 {
405     std::vector<int32_t>::size_type nPressed {};
406     pkt >> nPressed;
407 
408     std::vector<int32_t> pressedKeys;
409     int32_t keyCode {};
410 
411     for (; nPressed > 0; --nPressed) {
412         pkt >> keyCode;
413         pressedKeys.push_back(keyCode);
414     }
415     if (pkt.ChkRWError()) {
416         FI_HILOGE("Failed to deserialize pressed keys");
417         return RET_ERR;
418     }
419     event->SetPressedKeys(pressedKeys);
420     return RET_OK;
421 }
422 
SerializeBuffer(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)423 int32_t InputEventSerialization::SerializeBuffer(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
424 {
425     std::vector<uint8_t> buffer = event->GetBuffer();
426     if (buffer.size() > MMI::ExtraData::MAX_BUFFER_SIZE) {
427         FI_HILOGE("buffer is oversize:%{public}zu", buffer.size());
428         return RET_ERR;
429     }
430     std::vector<uint8_t>::size_type bufSize = buffer.size();
431     pkt << bufSize;
432 
433     for (std::vector<uint8_t>::size_type i = 0; i < bufSize; ++i) {
434         uint8_t item = buffer[i];
435         pkt << item;
436     }
437     if (pkt.ChkRWError()) {
438         FI_HILOGE("Failed to serialize buffer");
439         return RET_ERR;
440     }
441     return RET_OK;
442 }
443 
DeserializeBuffer(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)444 int32_t InputEventSerialization::DeserializeBuffer(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
445 {
446     std::vector<uint8_t>::size_type bufSize {};
447     pkt >> bufSize;
448 
449     std::vector<uint8_t> buffer;
450     uint8_t item {};
451 
452     for (; bufSize > 0; --bufSize) {
453         pkt >> item;
454         buffer.push_back(item);
455     }
456     if (pkt.ChkRWError()) {
457         FI_HILOGE("Failed to deserialize buffer");
458         return RET_ERR;
459     }
460     event->SetBuffer(buffer);
461     return RET_OK;
462 }
463 
Marshalling(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)464 int32_t InputEventSerialization::Marshalling(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
465 {
466     CALL_DEBUG_ENTER;
467     CHKPR(event, ERROR_NULL_POINTER);
468 
469     if (SerializeInputEvent(event, pkt) != RET_OK) {
470         FI_HILOGE("Serialize input event failed");
471         return RET_ERR;
472     }
473     if (SerializeBaseInfo(event, pkt) != RET_OK) {
474         FI_HILOGE("Failed to serialize base information of pointer event");
475         return RET_ERR;
476     }
477     if (SerializeAxes(event, pkt) != RET_OK) {
478         FI_HILOGE("Failed to serialize axes");
479         return RET_ERR;
480     }
481     if (SerializePressedButtons(event, pkt) != RET_OK) {
482         FI_HILOGE("Failed to serialize pressed buttons");
483         return RET_ERR;
484     }
485     if (SerializePointers(event, pkt) != RET_OK) {
486         FI_HILOGE("Failed to serialize pointers");
487         return RET_ERR;
488     }
489     if (SerializePressedKeys(event, pkt) != RET_OK) {
490         FI_HILOGE("Failed to serialize pressed keys");
491         return RET_ERR;
492     }
493     if (SerializeBuffer(event, pkt) != RET_OK) {
494         FI_HILOGE("Failed to serialize buffer");
495         return RET_ERR;
496     }
497     return RET_OK;
498 }
499 
Unmarshalling(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)500 int32_t InputEventSerialization::Unmarshalling(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
501 {
502     CALL_DEBUG_ENTER;
503     CHKPR(event, ERROR_NULL_POINTER);
504 
505     if (DeserializeInputEvent(pkt, event) != RET_OK) {
506         FI_HILOGE("Failed to deserialize input event");
507         return RET_ERR;
508     }
509     if (DeserializeBaseInfo(pkt, event) != RET_OK) {
510         FI_HILOGE("Failed to deserialize base information of pointer event");
511         return RET_ERR;
512     }
513     if (DeserializeAxes(pkt, event) != RET_OK) {
514         FI_HILOGE("Failed to deserialize axes");
515         return RET_ERR;
516     }
517     if (DeserializePressedButtons(pkt, event) != RET_OK) {
518         FI_HILOGE("Failed to deserialize pressed buttons");
519         return RET_ERR;
520     }
521     if (DeserializePointers(pkt, event) != RET_OK) {
522         FI_HILOGE("Failed to deserialize pointers");
523         return RET_ERR;
524     }
525     if (DeserializePressedKeys(pkt, event) != RET_OK) {
526         FI_HILOGE("Failed to deserialize pressed keys");
527         return RET_ERR;
528     }
529     if (DeserializeBuffer(pkt, event) != RET_OK) {
530         FI_HILOGE("Failed to deserialize buffer");
531         return RET_ERR;
532     }
533     return RET_OK;
534 }
535 
536 #ifdef OHOS_BUILD_ENABLE_SECURITY_PART
MarshallingEnhanceData(std::shared_ptr<MMI::PointerEvent> event,NetPacket & pkt)537 int32_t InputEventSerialization::MarshallingEnhanceData(std::shared_ptr<MMI::PointerEvent> event, NetPacket &pkt)
538 {
539     CHKPR(event, ERROR_NULL_POINTER);
540     int32_t pointerId = event->GetPointerId();
541     MMI::PointerEvent::PointerItem pointerItem;
542     if (!event->GetPointerItem(pointerId, pointerItem)) {
543         FI_HILOGE("Can't find pointer item, pointer:%{public}d", pointerId);
544         return RET_ERR;
545     }
546     SecCompPointEvent *secCompPointEvent = static_cast<SecCompPointEvent*>(malloc(sizeof(SecCompPointEvent)));
547     if (secCompPointEvent == NULL) {
548         FI_HILOGE("Malloc failed");
549         return RET_ERR;
550     }
551     secCompPointEvent->touchX = pointerItem.GetDisplayX();
552     secCompPointEvent->touchY = pointerItem.GetDisplayY();
553     secCompPointEvent->timeStamp = event->GetActionTime();
554     uint32_t dataLen = sizeof(*secCompPointEvent);
555     uint8_t outBuf[MAX_HMAC_SIZE] = { 0 };
556     uint8_t* enHanceData = reinterpret_cast<uint8_t *>(&outBuf[0]);
557     uint32_t enHanceDataLen = MAX_HMAC_SIZE;
558     int32_t result = Security::SecurityComponent::SecCompEnhanceKit::GetPointerEventEnhanceData(secCompPointEvent,
559         dataLen, enHanceData, enHanceDataLen);
560     if (result != 0 || enHanceDataLen > MAX_HMAC_SIZE) {
561         pkt << 0;
562         free(secCompPointEvent);
563         secCompPointEvent = nullptr;
564         FI_HILOGD("GetPointerEventEnhanceData failed!");
565         return RET_ERR;
566     }
567     pkt << enHanceDataLen;
568     std::vector<uint8_t> realBuf;
569     for (size_t i = 0; i < enHanceDataLen; i++) {
570         realBuf.push_back(enHanceData[i]);
571         pkt << realBuf[i];
572     }
573     free(secCompPointEvent);
574     secCompPointEvent = nullptr;
575     if (pkt.ChkRWError()) {
576         FI_HILOGE("Marshalling enhanceData failed");
577         return RET_ERR;
578     }
579     return RET_OK;
580 }
581 
UnmarshallingEnhanceData(NetPacket & pkt,std::shared_ptr<MMI::PointerEvent> event)582 int32_t InputEventSerialization::UnmarshallingEnhanceData(NetPacket &pkt, std::shared_ptr<MMI::PointerEvent> event)
583 {
584     uint32_t enHanceDataLen;
585     pkt >> enHanceDataLen;
586     if (enHanceDataLen == 0) {
587         return RET_OK;
588     }
589     uint8_t enhanceDataBuf[enHanceDataLen];
590     std::vector<uint8_t> enhanceData;
591     for (size_t i = 0; i < enHanceDataLen; i++) {
592         pkt >> enhanceDataBuf[i];
593         enhanceData.push_back(enhanceDataBuf[i]);
594     }
595     if (pkt.ChkRWError()) {
596         FI_HILOGE("UnmarshallingEnhanceData pointer event failed");
597         return RET_ERR;
598     }
599     event->SetEnhanceData(enhanceData);
600     return RET_OK;
601 }
602 
603 struct keyEventEnhanceData {
604     int64_t timestamp;
605     int32_t keyCode;
606 };
607 
MarshallingEnhanceData(std::shared_ptr<MMI::KeyEvent> event,NetPacket & pkt)608 int32_t InputEventSerialization::MarshallingEnhanceData(std::shared_ptr<MMI::KeyEvent> event, NetPacket &pkt)
609 {
610     CHKPR(event, ERROR_NULL_POINTER);
611     struct keyEventEnhanceData secCompKeyEvent;
612     secCompKeyEvent.timestamp = event->GetActionTime();
613     secCompKeyEvent.keyCode = event->GetKeyCode();
614     uint32_t dataLen = sizeof(secCompKeyEvent);
615     uint8_t outBuf[MAX_HMAC_SIZE] = { 0 };
616     uint8_t* enHanceData = reinterpret_cast<uint8_t *>(&outBuf[0]);
617     uint32_t enHanceDataLen = MAX_HMAC_SIZE;
618     int32_t result = Security::SecurityComponent::SecCompEnhanceKit::GetPointerEventEnhanceData(&secCompKeyEvent,
619         dataLen, enHanceData, enHanceDataLen);
620     if (result != 0 || enHanceDataLen > MAX_HMAC_SIZE) {
621         pkt << 0;
622         FI_HILOGD("GetKeyEventEnhanceData failed!");
623         return RET_ERR;
624     }
625     pkt << enHanceDataLen;
626     std::vector<uint8_t> realBuf;
627     for (size_t i = 0; i < enHanceDataLen; i++) {
628         realBuf.push_back(enHanceData[i]);
629         pkt << realBuf[i];
630     }
631     if (pkt.ChkRWError()) {
632         FI_HILOGE("Marshalling enhanceData failed");
633         return RET_ERR;
634     }
635     return RET_OK;
636 }
637 
UnmarshallingEnhanceData(NetPacket & pkt,std::shared_ptr<MMI::KeyEvent> event)638 int32_t InputEventSerialization::UnmarshallingEnhanceData(NetPacket &pkt, std::shared_ptr<MMI::KeyEvent> event)
639 {
640     uint32_t enHanceDataLen;
641     pkt >> enHanceDataLen;
642     if (enHanceDataLen == 0 || enHanceDataLen > MAX_HMAC_SIZE) {
643         return RET_OK;
644     }
645     uint8_t enhanceDataBuf[enHanceDataLen];
646     std::vector<uint8_t> enhanceData;
647     for (size_t i = 0; i < enHanceDataLen; i++) {
648         pkt >> enhanceDataBuf[i];
649         enhanceData.push_back(enhanceDataBuf[i]);
650     }
651     if (pkt.ChkRWError()) {
652         FI_HILOGE("UnmarshallingEnhanceData key event failed");
653         return RET_ERR;
654     }
655     event->SetEnhanceData(enhanceData);
656     return RET_OK;
657 }
658 #endif // OHOS_BUILD_ENABLE_SECURITY_PART
659 } // namespace Cooperate
660 } // namespace DeviceStatus
661 } // namespace Msdp
662 } // namespace OHOS
663