1 /*
2 * Copyright (c) 2021-2024 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 "data_ability_observer_stub.h"
17
18 #include "hilog_tag_wrapper.h"
19 #include "ipc_skeleton.h"
20 #include "common_utils.h"
21 #include "string_ex.h"
22
23 namespace OHOS {
24 namespace AAFwk {
25
26 const DataAbilityObserverStub::RequestFuncType DataAbilityObserverStub::HANDLES[TRANS_BUTT] = {
27 &DataAbilityObserverStub::OnChangeInner,
28 &DataAbilityObserverStub::OnChangeExtInner,
29 &DataAbilityObserverStub::OnChangePreferencesInner,
30 };
31
DataAbilityObserverStub()32 DataAbilityObserverStub::DataAbilityObserverStub() {}
33
~DataAbilityObserverStub()34 DataAbilityObserverStub::~DataAbilityObserverStub() {}
35
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)36 int DataAbilityObserverStub::OnRemoteRequest(uint32_t code, MessageParcel &data, MessageParcel &reply,
37 MessageOption &option)
38 {
39 TAG_LOGD(AAFwkTag::DBOBSMGR, "code: %{public}d, flags: %{public}d, callingPid:%{public}d", code, option.GetFlags(),
40 IPCSkeleton::GetCallingPid());
41 std::u16string descriptor = DataAbilityObserverStub::GetDescriptor();
42 std::u16string remoteDescriptor = data.ReadInterfaceToken();
43 if (descriptor != remoteDescriptor) {
44 TAG_LOGE(AAFwkTag::DBOBSMGR,
45 "local descriptor≠remote, descriptor:%{public}s, remoteDescriptor:%{public}s",
46 CommonUtils::Anonymous(Str16ToStr8(descriptor)).c_str(),
47 CommonUtils::Anonymous(Str16ToStr8(remoteDescriptor)).c_str());
48 return ERR_INVALID_STATE;
49 }
50
51 if (code < TRANS_HEAD || code >= TRANS_BUTT || HANDLES[code] == nullptr) {
52 TAG_LOGE(AAFwkTag::DBOBSMGR, "invalid code:%u, BUTT:%d", code, TRANS_BUTT);
53 return IPCObjectStub::OnRemoteRequest(code, data, reply, option);
54 }
55 return (this->*HANDLES[code])(data, reply);
56 }
57
58 /**
59 * @brief Called back to notify that the data being observed has changed.
60 *
61 * @return Returns 0 on success, others on failure.
62 */
OnChangeInner(MessageParcel & data,MessageParcel & reply)63 int32_t DataAbilityObserverStub::OnChangeInner(MessageParcel &data, MessageParcel &reply)
64 {
65 OnChange();
66 return ERR_NONE;
67 }
68
69 /**
70 * @brief Called back to notify that the data being observed has changed.
71 *
72 * @return Returns 0 on success, others on failure.
73 */
OnChangeExtInner(MessageParcel & data,MessageParcel & reply)74 int32_t DataAbilityObserverStub::OnChangeExtInner(MessageParcel &data, MessageParcel &reply)
75 {
76 ChangeInfo changeInfo;
77 if (!ChangeInfo::Unmarshalling(changeInfo, data)) {
78 return IPC_STUB_INVALID_DATA_ERR;
79 }
80 OnChangeExt(changeInfo);
81 return ERR_NONE;
82 }
83
84 /**
85 * @brief Called back to notify that the data being observed has changed.
86 *
87 * @return Returns 0 on success, others on failure.
88 */
OnChangePreferencesInner(MessageParcel & data,MessageParcel & reply)89 int32_t DataAbilityObserverStub::OnChangePreferencesInner(MessageParcel &data, MessageParcel &reply)
90 {
91 std::string key = data.ReadString();
92 if (key.empty()) {
93 return IPC_STUB_INVALID_DATA_ERR;
94 }
95 OnChangePreferences(key);
96 return ERR_NONE;
97 }
98
OnRemoteDied(const wptr<IRemoteObject> & remote)99 void DataObsCallbackRecipient::OnRemoteDied(const wptr<IRemoteObject> &remote)
100 {
101 if (handler_) {
102 handler_(remote);
103 }
104 }
105
DataObsCallbackRecipient(RemoteDiedHandler handler)106 DataObsCallbackRecipient::DataObsCallbackRecipient(RemoteDiedHandler handler) : handler_(handler) {}
107
~DataObsCallbackRecipient()108 DataObsCallbackRecipient::~DataObsCallbackRecipient() {}
109 } // namespace AAFwk
110 } // namespace OHOS
111