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 #include "key_session_service_callback_stub.h"
16 #include "remote_request_code.h"
17 #include "drm_log.h"
18 #include "drm_error_code.h"
19
20 namespace OHOS {
21 namespace DrmStandard {
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)22 int32_t MediaKeySessionServiceCallbackStub::OnRemoteRequest(uint32_t code, MessageParcel &data, MessageParcel &reply,
23 MessageOption &option)
24 {
25 int32_t ret = DRM_INNER_ERR_BASE;
26 if (data.ReadInterfaceToken() != GetDescriptor()) {
27 return ret;
28 }
29 switch (code) {
30 case MEDIA_KEY_SESSION_SERVICE_CALLBACK_SEND_EVENT:
31 ret = MediaKeySessionServiceCallbackStub::HandleSendEvent(data);
32 break;
33 case MEDIA_KEY_SESSION_SERVICE_CALLBACK_SEND_EVENT_KEY_CHANGED:
34 ret = MediaKeySessionServiceCallbackStub::HandleSendEventKeyChanged(data);
35 break;
36 default:
37 DRM_ERR_LOG("request code %{public}u not handled", code);
38 ret = IPCObjectStub::OnRemoteRequest(code, data, reply, option);
39 break;
40 }
41 return ret;
42 }
43
HandleSendEvent(MessageParcel & data)44 int32_t MediaKeySessionServiceCallbackStub::HandleSendEvent(MessageParcel &data)
45 {
46 DRM_INFO_LOG("HandleSendEvent enter.");
47 int32_t event = data.ReadInt32();
48 int32_t extra = data.ReadInt32();
49 uint32_t dataSize = data.ReadUint32();
50 DRM_CHECK_AND_RETURN_RET_LOG(dataSize < MAX_EVENT_NAME_LEN, DRM_INNER_ERR_MEMORY_ERROR,
51 "The size of event name is too large.");
52 std::vector<uint8_t> customizedData;
53 if (dataSize != 0) {
54 const uint8_t *dataBuf = static_cast<const uint8_t *>(data.ReadUnpadBuffer(dataSize));
55 if (dataBuf == nullptr) {
56 DRM_ERR_LOG("HandleSendEvent read data failed.");
57 return IPC_STUB_WRITE_PARCEL_ERR;
58 }
59 customizedData.assign(dataBuf, dataBuf + dataSize);
60 }
61
62 DrmEventType eventType = static_cast<DrmEventType>(event);
63 return SendEvent(eventType, extra, customizedData);
64 }
65
HandleSendEventKeyChanged(MessageParcel & data)66 int32_t MediaKeySessionServiceCallbackStub::HandleSendEventKeyChanged(MessageParcel &data)
67 {
68 DRM_INFO_LOG("HandleSendEventKeyChanged enter.");
69 std::map<std::vector<uint8_t>, MediaKeySessionKeyStatus> statusTable;
70 uint32_t mapSize = data.ReadUint32();
71 DRM_CHECK_AND_RETURN_RET_LOG(mapSize < DATA_MAX_LEN, DRM_INNER_ERR_MEMORY_ERROR,
72 "The size of event data is too large.");
73 for (uint32_t index = 0; index < mapSize; index++) {
74 std::vector<uint8_t> item;
75 uint32_t idSize = data.ReadUint32();
76 if (idSize > 0 && idSize <= MAX_KEY_ID_LEN) {
77 const uint8_t *idBuf = static_cast<const uint8_t *>(data.ReadUnpadBuffer(idSize));
78 if (idBuf == nullptr) {
79 DRM_ERR_LOG("HandleSendEventKeyChanged read data failed.");
80 return IPC_STUB_WRITE_PARCEL_ERR;
81 }
82 item.assign(idBuf, idBuf + idSize);
83 }
84 MediaKeySessionKeyStatus licenseStatus = static_cast<MediaKeySessionKeyStatus>(data.ReadInt32());
85 statusTable[item] = licenseStatus;
86 }
87
88 bool hasNewGoodLicense = data.ReadBool();
89 return SendEventKeyChanged(statusTable, hasNewGoodLicense);
90 }
91 } // namespace DrmStandard
92 } // namespace OHOS