2 * Copyright (c) 2017 TOYOTA MOTOR CORPORATION
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <sys/socket.h>
29 #include <libhomescreen.hpp>
30 #include "hmi-debug.h"
34 static bool has_verb(const string& verb);
35 static const char API[] = "homescreen";
37 const std::vector<std::string> LibHomeScreen::api_list {
38 std::string("ping"), // debug do not use
39 std::string("tap_shortcut"), // HomeScreen Application only
40 std::string("on_screen_message"),
41 std::string("on_screen_reply"),
42 std::string("subscribe"),
43 std::string("unsubscribe")
46 const std::vector<std::string> LibHomeScreen::event_list {
47 std::string("tap_shortcut"),
48 std::string("on_screen_message"),
49 std::string("on_screen_reply"),
58 static void _on_hangup_static(void *closure, struct afb_wsj1 *wsj)
60 static_cast<LibHomeScreen*>(closure)->on_hangup(NULL,wsj);
63 static void _on_call_static(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
65 /* LibHomeScreen is not called from other process */
68 static void _on_event_static(void* closure, const char* event, struct afb_wsj1_msg *msg)
70 static_cast<LibHomeScreen*>(closure)->on_event(NULL,event,msg);
73 static void _on_reply_static(void *closure, struct afb_wsj1_msg *msg)
75 static_cast<LibHomeScreen*>(closure)->on_reply(NULL,msg);
82 LibHomeScreen::LibHomeScreen()
89 LibHomeScreen::~LibHomeScreen()
93 sd_event_unref(mploop);
95 if(sp_websock != NULL)
97 afb_wsj1_unref(sp_websock);
102 * This function is initializer
105 * - port [in] : This argument should be specified to the port number to be used for websocket
106 * - token [in] : This argument should be specified to the token to be used for websocket
112 * Use this constructor
115 int LibHomeScreen::init(const int port, const string& token)
119 if(port > 0 && token.size() > 0)
126 HMI_ERROR("libhomescreen","port and token should be > 0, Initial port and token uses.");
129 ret = initialize_websocket();
132 HMI_ERROR("libhomescreen","Failed to initialize websocket");
135 HMI_DEBUG("libhomescreen","Initialized");
138 mapp_id = std::getenv("AFM_ID");
140 mapp_id.erase(mapp_id.find('@'));
141 HMI_DEBUG("libhomescreen","My application id is: %s.", mapp_id);
145 HMI_ERROR("libhomescreen","Failed to get my application id");
152 * This function register callback function for reply/event message from home screen
155 * - event_cb [in] : This argument should be specified to the callback for subscribed event
156 * - reply_cb [in] : This argument should be specified to the reply callback for call function
162 * Event callback is invoked by home screen for event you subscribed.
163 * If you would like to get event, please call subscribe function before/after this function
165 void LibHomeScreen::registerCallback(
166 void (*event_cb)(const std::string& event, struct json_object* event_contents),
167 void (*reply_cb)(struct json_object* reply_contents),
168 void (*hangup_cb)(void))
172 onHangup = hangup_cb;
175 int LibHomeScreen::initialize_websocket()
180 int ret = sd_event_default(&mploop);
183 HMI_ERROR("libhomescreen","Failed to create event loop");
187 /* Initialize interface from websocket */
188 minterface.on_hangup = _on_hangup_static;
189 minterface.on_call = _on_call_static;
190 minterface.on_event = _on_event_static;
191 muri += "ws://localhost:" + to_string(mport) + "/api?token=" + mtoken; /*To be modified*/
192 sp_websock = afb_ws_client_connect_wsj1(mploop, muri.c_str(), &minterface, this);
193 if(sp_websock == NULL)
195 HMI_ERROR("libhomescreen","Failed to create websocket connection");
199 /* creates the evsrc */
200 //ret = sd_event_add_io(mploop,&mevent_src, sp_websock->fd, EPOLLIN, event_callback, NULL);
206 sd_event_unref(mploop);
212 * Sending ShortCut Icon tapped event
214 * When HomeScreen shortcut area is tapped, sending a event
217 * - application_id [in] : Tapped application id
220 * - Returns 0 on success or -1 in case of error.
222 int LibHomeScreen::tapShortcut(const char* application_id)
229 struct json_object* j_obj = json_object_new_object();
230 struct json_object* val = json_object_new_string(application_id);
231 json_object_object_add(j_obj, "application_id", val);
232 return this->call("tap_shortcut", j_obj);
236 * Sending onScreen message event
238 * Sending OnScreen message event to HomeScreen from applications
241 * - display_message [in] : message for display
244 * - Returns 0 on success or -1 in case of error.
246 int LibHomeScreen::onScreenMessage(const char* display_message)
253 struct json_object* j_obj = json_object_new_object();
254 struct json_object* val = json_object_new_string(display_message);
255 json_object_object_add(j_obj, "display_message", val);
256 return this->call("on_screen_message", j_obj);
260 * Sending onScreen reply event
262 * Sending OnScreen reply event to applications from HomeScreen
265 * - reply_message [in] : message for reply
268 * - Returns 0 on success or -1 in case of error.
270 int LibHomeScreen::onScreenReply(const char* reply_message)
277 struct json_object* j_obj = json_object_new_object();
278 struct json_object* val = json_object_new_string(reply_message);
279 json_object_object_add(j_obj, "reply_message", val);
280 return this->call("on_screen_reply", j_obj);
284 * Setting Event Handler
286 * Setting event handler for Homescreen
289 * - et [in] : event name
290 * - f [in] : event handler
296 * Don't release json_object by json_object_put in handler_func.
297 * The resource is released by libafbwsc library.
299 void LibHomeScreen::set_event_handler(enum EventType et, handler_func f)
301 if (et >= 1 && et <= 3) {
303 case Event_TapShortcut:
304 this->subscribe(LibHomeScreen::event_list[0]);
306 case Event_OnScreenMessage:
307 this->subscribe(LibHomeScreen::event_list[1]);
309 case Event_OnScreenReply:
310 this->subscribe(LibHomeScreen::event_list[2]);
314 this->handlers[et] = std::move(f);
319 * This function calls the API of HomeScreen via WebSocket
322 * - verb [in] : This argument should be specified to the API name (e.g. "tap_shortcut")
323 * - arg [in] : This argument should be specified to the argument of API. And this argument expects JSON object
326 * - Returns 0 on success or -1 in case of error.
329 * To call HomeScreen's APIs, the application should set its function name, arguments to JSON format.
332 int LibHomeScreen::call(const string& verb, struct json_object* arg)
341 HMI_ERROR("libhomescreen","verb doesn't exit");
344 ret = afb_wsj1_call_j(sp_websock, API, verb.c_str(), arg, _on_reply_static, this);
346 HMI_ERROR("libhomescreen","Failed to call verb:%s",verb.c_str());
352 * This function calls the API of HomeScreen via WebSocket
353 * This function is overload function of "call"
356 * - verb [in] : This argument should be specified to the API name (e.g. "tap_shortcut")
357 * - arg [in] : This argument should be specified to the argument of API. And this argument expects JSON object
360 * - Returns 0 on success or -1 in case of error.
363 * To call HomeScreen's APIs, the application should set its function name, arguments to JSON format.
366 int LibHomeScreen::call(const char* verb, struct json_object* arg)
373 if (!has_verb(string(verb)))
375 HMI_ERROR("libhomescreen","verb doesn't exit");
378 ret = afb_wsj1_call_j(sp_websock, API, verb, arg, _on_reply_static, this);
380 HMI_ERROR("libhomescreen","Failed to call verb:%s",verb);
386 * Register callback function for each event
389 * - event_name [in] : This argument should be specified to the event name
392 * - Returns 0 on success or -1 in case of error.
395 * This function enables to get an event to your callback function.
398 int LibHomeScreen::subscribe(const string& event_name)
404 struct json_object* j_obj = json_object_new_object();
405 json_object_object_add(j_obj, "event", json_object_new_string(event_name.c_str()));
407 int ret = afb_wsj1_call_j(sp_websock, API, "subscribe", j_obj, _on_reply_static, this);
409 HMI_ERROR("libhomescreen","Failed to call verb");
415 * Unregister callback function for each event
418 * - event_name [in] : This argument should be specified to the event name
421 * - Returns 0 on success or -1 in case of error.
424 * This function disables to get an event to your callback function.
427 int LibHomeScreen::unsubscribe(const string& event_name)
433 struct json_object* j_obj = json_object_new_object();
434 json_object_object_add(j_obj, "event", json_object_new_string(event_name.c_str()));
436 int ret = afb_wsj1_call_j(sp_websock, API, "unsubscribe", j_obj, _on_reply_static, this);
438 HMI_ERROR("libhomescreen","Failed to call verb");
443 /************* Callback Function *************/
445 void LibHomeScreen::on_hangup(void *closure, struct afb_wsj1 *wsj)
447 HMI_DEBUG("libhomescreen","called");
448 if(onHangup != nullptr)
454 void LibHomeScreen::on_call(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
459 * event is like "homescreen/tap_shortcut"
460 * msg is like {"event":"homescreen\/tap_shortcut","data":{"application_id":"hoge"},"jtype":"afb-event"}
462 event name : struct json_object obj = json_object_object_get(msg,"event")
464 void LibHomeScreen::on_event(void *closure, const char *event, struct afb_wsj1_msg *msg)
466 if (strstr(event, API) == NULL) {
470 struct json_object* ev_contents = afb_wsj1_msg_object_j(msg);
471 struct json_object *json_data = json_object_object_get(ev_contents, "data");
473 if(onEvent != nullptr)
475 const string ev(event);
476 onEvent(ev, ev_contents);
479 const char* event_only = strchr(event, '/');
480 if (event_only != nullptr) {
481 event_only = event_only + 1;
483 HMI_WARNING("libhomescreen","event_only is null.");
487 if (strcasecmp(event_only, LibHomeScreen::event_list[0].c_str()) == 0) {
488 struct json_object *j_id;
489 json_object_object_get_ex(json_data, "application_id", &j_id);
490 const char* app_id = json_object_get_string(j_id);
492 if(!strcasecmp(app_id, mapp_id.c_str())) {
493 HMI_DEBUG("libhomescreen","send Event_TapShortcut to: (%s).", mapp_id.c_str());
494 auto i = this->handlers.find(Event_TapShortcut);
495 if ( i != this->handlers.end() ) {
496 i->second(json_data);
500 else if (strcasecmp(event_only, LibHomeScreen::event_list[1].c_str()) == 0) {
501 auto i = this->handlers.find(Event_OnScreenMessage);
502 if ( i != this->handlers.end() ) {
503 i->second(json_data);
506 else if (strcasecmp(event_only, LibHomeScreen::event_list[2].c_str()) == 0) {
507 auto i = this->handlers.find(Event_OnScreenReply);
508 if ( i != this->handlers.end() ) {
509 i->second(json_data);
515 * msg is like ({"response":{"verb":"subscribe","error":0},"jtype":"afb-reply","request":{"status":"success","info":"homescreen binder subscribe event name [on_screen_message]"}})
516 * msg is like ({"response":{"verb":"tap_shortcut","error":0},"jtype":"afb-reply","request":{"status":"success","info":"afb_event_push event [tap_shortcut]"}})
518 void LibHomeScreen::on_reply(void *closure, struct afb_wsj1_msg *msg)
520 HMI_DEBUG("libhomescreen","msg: (%s)", afb_wsj1_msg_object_s(msg));
521 if(onReply != nullptr)
523 struct json_object* reply = afb_wsj1_msg_object_j(msg);
528 static bool has_verb(const string& verb)
530 HMI_DEBUG("libhomescreen","verb is %s", verb.c_str());
531 if(find(LibHomeScreen::api_list.begin(), LibHomeScreen::api_list.end(), verb) != LibHomeScreen::api_list.end())