1 /*
2  * Copyright (C) 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 #include "gnss_status_callback_napi.h"
16 
17 #include "napi/native_common.h"
18 
19 #include "common_utils.h"
20 #include "ipc_skeleton.h"
21 #include "location_log.h"
22 #include "napi_util.h"
23 #include "common_utils.h"
24 #include "constant_definition.h"
25 
26 namespace OHOS {
27 namespace Location {
28 static std::mutex g_regCallbackMutex;
29 static std::vector<napi_ref> g_registerCallbacks;
GnssStatusCallbackNapi()30 GnssStatusCallbackNapi::GnssStatusCallbackNapi()
31 {
32     env_ = nullptr;
33     handlerCb_ = nullptr;
34     remoteDied_ = false;
35 }
36 
~GnssStatusCallbackNapi()37 GnssStatusCallbackNapi::~GnssStatusCallbackNapi()
38 {
39 }
40 
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)41 int GnssStatusCallbackNapi::OnRemoteRequest(
42     uint32_t code, MessageParcel& data, MessageParcel& reply, MessageOption& option)
43 {
44     LBSLOGD(GNSS_STATUS_CALLBACK, "GnssStatusCallbackNapi::OnRemoteRequest!");
45     if (data.ReadInterfaceToken() != GetDescriptor()) {
46         LBSLOGE(GNSS_STATUS_CALLBACK, "invalid token.");
47         return -1;
48     }
49     if (remoteDied_) {
50         LBSLOGD(GNSS_STATUS_CALLBACK, "Failed to `%{public}s`,Remote service is died!", __func__);
51         return -1;
52     }
53 
54     switch (code) {
55         case RECEIVE_STATUS_INFO_EVENT: {
56             std::unique_ptr<SatelliteStatus> statusInfo = SatelliteStatus::Unmarshalling(data);
57             Send(statusInfo);
58             break;
59         }
60         default: {
61             IPCObjectStub::OnRemoteRequest(code, data, reply, option);
62             break;
63         }
64     }
65     return 0;
66 }
67 
GetEnv()68 napi_env GnssStatusCallbackNapi::GetEnv()
69 {
70     std::unique_lock<std::mutex> guard(mutex_);
71     return env_;
72 }
73 
SetEnv(const napi_env & env)74 void GnssStatusCallbackNapi::SetEnv(const napi_env& env)
75 {
76     std::unique_lock<std::mutex> guard(mutex_);
77     env_ = env;
78 }
79 
GetHandleCb()80 napi_ref GnssStatusCallbackNapi::GetHandleCb()
81 {
82     std::unique_lock<std::mutex> guard(mutex_);
83     return handlerCb_;
84 }
85 
SetHandleCb(const napi_ref & handlerCb)86 void GnssStatusCallbackNapi::SetHandleCb(const napi_ref& handlerCb)
87 {
88     {
89         std::unique_lock<std::mutex> guard(mutex_);
90         handlerCb_ = handlerCb;
91     }
92     std::unique_lock<std::mutex> guard(g_regCallbackMutex);
93     g_registerCallbacks.emplace_back(handlerCb);
94 }
95 
FindGnssStatusCallback(napi_ref cb)96 bool FindGnssStatusCallback(napi_ref cb)
97 {
98     std::unique_lock<std::mutex> guard(g_regCallbackMutex);
99     auto iter = std::find(g_registerCallbacks.begin(), g_registerCallbacks.end(), cb);
100     if (iter == g_registerCallbacks.end()) {
101         return false;
102     }
103     return true;
104 }
105 
DeleteGnssStatusCallback(napi_ref cb)106 void DeleteGnssStatusCallback(napi_ref cb)
107 {
108     std::unique_lock<std::mutex> guard(g_regCallbackMutex);
109     for (auto iter = g_registerCallbacks.begin(); iter != g_registerCallbacks.end(); iter++) {
110         if (*iter == cb) {
111             iter = g_registerCallbacks.erase(iter);
112             break;
113         }
114     }
115 }
116 
IsRemoteDied()117 bool GnssStatusCallbackNapi::IsRemoteDied()
118 {
119     return remoteDied_;
120 }
121 
Send(std::unique_ptr<SatelliteStatus> & statusInfo)122 bool GnssStatusCallbackNapi::Send(std::unique_ptr<SatelliteStatus>& statusInfo)
123 {
124     std::unique_lock<std::mutex> guard(mutex_);
125     uv_loop_s *loop = nullptr;
126     NAPI_CALL_BASE(env_, napi_get_uv_event_loop(env_, &loop), false);
127     if (loop == nullptr) {
128         LBSLOGE(GNSS_STATUS_CALLBACK, "loop == nullptr.");
129         return false;
130     }
131     if (handlerCb_ == nullptr) {
132         LBSLOGE(GNSS_STATUS_CALLBACK, "handler is nullptr.");
133         return false;
134     }
135     uv_work_t *work = new (std::nothrow) uv_work_t;
136     if (work == nullptr) {
137         LBSLOGE(GNSS_STATUS_CALLBACK, "work == nullptr.");
138         return false;
139     }
140     GnssStatusAsyncContext *context = new (std::nothrow) GnssStatusAsyncContext(env_);
141     if (context == nullptr) {
142         LBSLOGE(GNSS_STATUS_CALLBACK, "context == nullptr.");
143         delete work;
144         return false;
145     }
146     if (!InitContext(context)) {
147         LBSLOGE(GNSS_STATUS_CALLBACK, "InitContext fail");
148         return false;
149     }
150     context->statusInfo = std::move(statusInfo);
151     work->data = context;
152     UvQueueWork(loop, work);
153     return true;
154 }
155 
UvQueueWork(uv_loop_s * loop,uv_work_t * work)156 void GnssStatusCallbackNapi::UvQueueWork(uv_loop_s* loop, uv_work_t* work)
157 {
158     uv_queue_work(
159         loop,
160         work,
161         [](uv_work_t *work) {},
162         [](uv_work_t *work, int status) {
163             GnssStatusAsyncContext *context = nullptr;
164             napi_handle_scope scope = nullptr;
165             if (work == nullptr) {
166                 LBSLOGE(LOCATOR_CALLBACK, "work is nullptr!");
167                 return;
168             }
169             context = static_cast<GnssStatusAsyncContext *>(work->data);
170             if (context == nullptr || context->env == nullptr) {
171                 LBSLOGE(LOCATOR_CALLBACK, "context is nullptr!");
172                 delete work;
173                 return;
174             }
175             if (!FindGnssStatusCallback(context->callback[0])) {
176                 LBSLOGE(GNSS_STATUS_CALLBACK, "no valid callback");
177                 delete context;
178                 delete work;
179                 return;
180             }
181             NAPI_CALL_RETURN_VOID(context->env, napi_open_handle_scope(context->env, &scope));
182             if (scope == nullptr) {
183                 LBSLOGE(GNSS_STATUS_CALLBACK, "scope is nullptr");
184                 delete context;
185                 delete work;
186                 return;
187             }
188             napi_value jsEvent = nullptr;
189             if (context->statusInfo != nullptr) {
190                 CHK_NAPI_ERR_CLOSE_SCOPE(context->env, napi_create_object(context->env, &jsEvent),
191                     scope, context, work);
192                 SatelliteStatusToJs(context->env, context->statusInfo, jsEvent);
193             }
194             if (context->callback[0] != nullptr) {
195                 napi_value undefine;
196                 napi_value handler = nullptr;
197                 CHK_NAPI_ERR_CLOSE_SCOPE(context->env, napi_get_undefined(context->env, &undefine),
198                     scope, context, work);
199                 CHK_NAPI_ERR_CLOSE_SCOPE(context->env,
200                     napi_get_reference_value(context->env, context->callback[0], &handler), scope, context, work);
201                 if (napi_call_function(context->env, nullptr, handler, 1, &jsEvent, &undefine) != napi_ok) {
202                     LBSLOGE(GNSS_STATUS_CALLBACK, "Report event failed");
203                 }
204             }
205             NAPI_CALL_RETURN_VOID(context->env, napi_close_handle_scope(context->env, scope));
206             delete context;
207             delete work;
208     });
209 }
210 
OnStatusChange(const std::unique_ptr<SatelliteStatus> & statusInfo)211 void GnssStatusCallbackNapi::OnStatusChange(const std::unique_ptr<SatelliteStatus>& statusInfo)
212 {
213     LBSLOGD(GNSS_STATUS_CALLBACK, "GnssStatusCallbackNapi::OnStatusChange");
214 }
215 
DeleteHandler()216 void GnssStatusCallbackNapi::DeleteHandler()
217 {
218     std::unique_lock<std::mutex> guard(mutex_);
219     if (handlerCb_ == nullptr || env_ == nullptr) {
220         LBSLOGE(GNSS_STATUS_CALLBACK, "handler or env is nullptr.");
221         return;
222     }
223     DeleteGnssStatusCallback(handlerCb_);
224     NAPI_CALL_RETURN_VOID(env_, napi_delete_reference(env_, handlerCb_));
225     handlerCb_ = nullptr;
226 }
227 }  // namespace Location
228 }  // namespace OHOS
229