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 "observer_callback_stub.h"
17
18 #include <string>
19 #include <memory>
20 #include "user_access_tracer.h"
21 #include "accesstoken_kit.h"
22 #include "file_access_framework_errno.h"
23 #include "hilog_wrapper.h"
24 #include "hitrace_meter.h"
25 #include "ipc_object_stub.h"
26 #include "ipc_skeleton.h"
27 #include "ipc_types.h"
28 #include "message_parcel.h"
29
30 namespace OHOS {
31 namespace FileAccessFwk {
~ObserverCallbackStub()32 ObserverCallbackStub::~ObserverCallbackStub()
33 {
34 stubFuncMap_.clear();
35 }
36
InitStubFuncMap()37 void ObserverCallbackStub::InitStubFuncMap()
38 {
39 if (stubFuncMap_.size() == 0) {
40 stubFuncMap_[CMD_ONCHANGE] = &ObserverCallbackStub::OnChangeStub;
41 }
42 }
43
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)44 int32_t ObserverCallbackStub::OnRemoteRequest(uint32_t code, MessageParcel& data, MessageParcel& reply,
45 MessageOption& option)
46 {
47 UserAccessTracer trace;
48 trace.Start("OnRemoteRequest");
49 InitStubFuncMap();
50 std::u16string descriptor = ObserverCallbackStub::GetDescriptor();
51 std::u16string remoteDescriptor = data.ReadInterfaceToken();
52 if (descriptor != remoteDescriptor) {
53 return ERR_INVALID_STATE;
54 }
55
56 const auto &itFunc = stubFuncMap_.find(code);
57 if (itFunc != stubFuncMap_.end()) {
58 return (this->*(itFunc->second))(data, reply);
59 }
60
61 return IPCObjectStub::OnRemoteRequest(code, data, reply, option);
62 }
63
OnChangeStub(MessageParcel & data,MessageParcel & reply)64 int32_t ObserverCallbackStub::OnChangeStub(MessageParcel &data, MessageParcel &reply)
65 {
66 UserAccessTracer trace;
67 trace.Start("OnChangeStub");
68 std::shared_ptr<NotifyMessage> notifyMessage(data.ReadParcelable<NotifyMessage>());
69 if (notifyMessage == nullptr) {
70 HILOG_ERROR("OnChange uri is nullptr");
71 return E_URIS;
72 }
73
74 OnChange(*notifyMessage);
75 int ret = ERR_OK;
76 if (!reply.WriteInt32(ret)) {
77 HILOG_ERROR("Parameter OnChangeStub fail to WriteInt32 ret");
78 return E_IPCS;
79 }
80 return ERR_OK;
81 }
82 }
83 }