notifier: Remove unused technology notifiers
[platform/upstream/connman.git] / src / notifier.c
1 /*
2  *
3  *  Connection Manager
4  *
5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License version 2 as
9  *  published by the Free Software Foundation.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
19  *
20  */
21
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25
26 #include <gdbus.h>
27
28 #include "connman.h"
29
30 static DBusConnection *connection = NULL;
31
32 static GSList *notifier_list = NULL;
33 static GHashTable *service_hash = NULL;
34
35 static gint compare_priority(gconstpointer a, gconstpointer b)
36 {
37         const struct connman_notifier *notifier1 = a;
38         const struct connman_notifier *notifier2 = b;
39
40         return notifier2->priority - notifier1->priority;
41 }
42
43 /**
44  * connman_notifier_register:
45  * @notifier: notifier module
46  *
47  * Register a new notifier module
48  *
49  * Returns: %0 on success
50  */
51 int connman_notifier_register(struct connman_notifier *notifier)
52 {
53         DBG("notifier %p name %s", notifier, notifier->name);
54
55         notifier_list = g_slist_insert_sorted(notifier_list, notifier,
56                                                         compare_priority);
57
58         return 0;
59 }
60
61 /**
62  * connman_notifier_unregister:
63  * @notifier: notifier module
64  *
65  * Remove a previously registered notifier module
66  */
67 void connman_notifier_unregister(struct connman_notifier *notifier)
68 {
69         DBG("notifier %p name %s", notifier, notifier->name);
70
71         notifier_list = g_slist_remove(notifier_list, notifier);
72 }
73
74 #define MAX_TECHNOLOGIES 10
75
76 static volatile int connected[MAX_TECHNOLOGIES];
77
78 unsigned int __connman_notifier_count_connected(void)
79 {
80         unsigned int i, count = 0;
81
82         __sync_synchronize();
83         for (i = 0; i < MAX_TECHNOLOGIES; i++) {
84                 if (connected[i] > 0)
85                         count++;
86         }
87
88         return count;
89 }
90
91 const char *__connman_notifier_get_state(void)
92 {
93         unsigned int count = __connman_notifier_count_connected();
94
95         if (count > 0)
96                 return "online";
97
98         return "offline";
99 }
100
101 static void state_changed(connman_bool_t connected)
102 {
103         unsigned int count = __connman_notifier_count_connected();
104         char *state = "offline";
105
106         if (count > 1)
107                 return;
108
109         if (count == 1) {
110                 if (connected == FALSE)
111                         return;
112
113                 state = "online";
114         }
115
116         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
117                                 CONNMAN_MANAGER_INTERFACE, "State",
118                                                 DBUS_TYPE_STRING, &state);
119 }
120
121 static void technology_connected(enum connman_service_type type,
122                                                 connman_bool_t connected)
123 {
124         DBG("type %d connected %d", type, connected);
125
126         state_changed(connected);
127 }
128
129 void __connman_notifier_connect(enum connman_service_type type)
130 {
131         DBG("type %d", type);
132
133         switch (type) {
134         case CONNMAN_SERVICE_TYPE_UNKNOWN:
135         case CONNMAN_SERVICE_TYPE_SYSTEM:
136         case CONNMAN_SERVICE_TYPE_GPS:
137         case CONNMAN_SERVICE_TYPE_VPN:
138         case CONNMAN_SERVICE_TYPE_GADGET:
139                 return;
140         case CONNMAN_SERVICE_TYPE_ETHERNET:
141         case CONNMAN_SERVICE_TYPE_WIFI:
142         case CONNMAN_SERVICE_TYPE_WIMAX:
143         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
144         case CONNMAN_SERVICE_TYPE_CELLULAR:
145                 break;
146         }
147
148         if (__sync_fetch_and_add(&connected[type], 1) == 0)
149                 technology_connected(type, TRUE);
150 }
151
152 void __connman_notifier_disconnect(enum connman_service_type type)
153 {
154         DBG("type %d", type);
155
156         __sync_synchronize();
157         if (connected[type] == 0) {
158                 connman_error("notifier disconnect underflow");
159                 return;
160         }
161
162         switch (type) {
163         case CONNMAN_SERVICE_TYPE_UNKNOWN:
164         case CONNMAN_SERVICE_TYPE_SYSTEM:
165         case CONNMAN_SERVICE_TYPE_GPS:
166         case CONNMAN_SERVICE_TYPE_VPN:
167         case CONNMAN_SERVICE_TYPE_GADGET:
168                 return;
169         case CONNMAN_SERVICE_TYPE_ETHERNET:
170         case CONNMAN_SERVICE_TYPE_WIFI:
171         case CONNMAN_SERVICE_TYPE_WIMAX:
172         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
173         case CONNMAN_SERVICE_TYPE_CELLULAR:
174                 break;
175         }
176
177         if (__sync_fetch_and_sub(&connected[type], 1) != 1)
178                 return;
179
180         technology_connected(type, FALSE);
181 }
182
183 static void technology_default(enum connman_service_type type)
184 {
185         const char *str;
186
187         str = __connman_service_type2string(type);
188         if (str == NULL)
189                 str = "";
190
191         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
192                         CONNMAN_MANAGER_INTERFACE, "DefaultTechnology",
193                                                 DBUS_TYPE_STRING, &str);
194 }
195
196 void __connman_notifier_default_changed(struct connman_service *service)
197 {
198         enum connman_service_type type = connman_service_get_type(service);
199         char *interface;
200         GSList *list;
201
202         technology_default(type);
203
204         interface = connman_service_get_interface(service);
205         __connman_tethering_update_interface(interface);
206         g_free(interface);
207
208         for (list = notifier_list; list; list = list->next) {
209                 struct connman_notifier *notifier = list->data;
210
211                 if (notifier->default_changed)
212                         notifier->default_changed(service);
213         }
214 }
215
216 void __connman_notifier_service_add(struct connman_service *service,
217                                         const char *name)
218 {
219         GSList *list;
220
221         for (list = notifier_list; list; list = list->next) {
222                 struct connman_notifier *notifier = list->data;
223
224                 if (notifier->service_add)
225                         notifier->service_add(service, name);
226         }
227 }
228
229 void __connman_notifier_service_remove(struct connman_service *service)
230 {
231         GSList *list;
232
233         if (g_hash_table_lookup(service_hash, service) != NULL) {
234                 /*
235                  * This is a tempory check for consistency. It can be
236                  * removed when there are no reports for the following
237                  * error message.
238                  */
239                 connman_error("Service state machine inconsistency detected.");
240
241                 g_hash_table_remove(service_hash, service);
242         }
243
244         for (list = notifier_list; list; list = list->next) {
245                 struct connman_notifier *notifier = list->data;
246
247                 if (notifier->service_remove)
248                         notifier->service_remove(service);
249         }
250 }
251
252 void __connman_notifier_proxy_changed(struct connman_service *service)
253 {
254         GSList *list;
255
256         for (list = notifier_list; list; list = list->next) {
257                 struct connman_notifier *notifier = list->data;
258
259                 if (notifier->proxy_changed)
260                         notifier->proxy_changed(service);
261         }
262 }
263
264 static void offlinemode_changed(dbus_bool_t enabled)
265 {
266         DBG("enabled %d", enabled);
267
268         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
269                                 CONNMAN_MANAGER_INTERFACE, "OfflineMode",
270                                                 DBUS_TYPE_BOOLEAN, &enabled);
271 }
272
273 void __connman_notifier_offlinemode(connman_bool_t enabled)
274 {
275         GSList *list;
276
277         DBG("enabled %d", enabled);
278
279         offlinemode_changed(enabled);
280
281         for (list = notifier_list; list; list = list->next) {
282                 struct connman_notifier *notifier = list->data;
283
284                 if (notifier->offline_mode)
285                         notifier->offline_mode(enabled);
286         }
287 }
288
289 static void notify_idle_state(connman_bool_t idle)
290 {
291         GSList *list;
292
293         DBG("idle %d", idle);
294
295         for (list = notifier_list; list; list = list->next) {
296                 struct connman_notifier *notifier = list->data;
297
298                 if (notifier->idle_state)
299                         notifier->idle_state(idle);
300         }
301 }
302
303 void __connman_notifier_service_state_changed(struct connman_service *service,
304                                         enum connman_service_state state)
305 {
306         GSList *list;
307         unsigned int old_size;
308         connman_bool_t found;
309
310         for (list = notifier_list; list; list = list->next) {
311                 struct connman_notifier *notifier = list->data;
312
313                 if (notifier->service_state_changed)
314                         notifier->service_state_changed(service, state);
315         }
316
317         old_size = g_hash_table_size(service_hash);
318         found = g_hash_table_lookup(service_hash, service) != NULL;
319
320         switch (state) {
321         case CONNMAN_SERVICE_STATE_UNKNOWN:
322         case CONNMAN_SERVICE_STATE_FAILURE:
323         case CONNMAN_SERVICE_STATE_DISCONNECT:
324         case CONNMAN_SERVICE_STATE_IDLE:
325                 if (found == FALSE)
326                         break;
327
328                 g_hash_table_remove(service_hash, service);
329                 if (old_size == 1)
330                         notify_idle_state(TRUE);
331
332                 break;
333         case CONNMAN_SERVICE_STATE_ASSOCIATION:
334         case CONNMAN_SERVICE_STATE_CONFIGURATION:
335         case CONNMAN_SERVICE_STATE_READY:
336         case CONNMAN_SERVICE_STATE_ONLINE:
337                 if (found == TRUE)
338                         break;
339
340                 g_hash_table_insert(service_hash, service, service);
341                 if (old_size == 0)
342                         notify_idle_state(FALSE);
343
344                 break;
345         }
346 }
347
348 void __connman_notifier_ipconfig_changed(struct connman_service *service,
349                                         struct connman_ipconfig *ipconfig)
350 {
351         GSList *list;
352
353         for (list = notifier_list; list; list = list->next) {
354                 struct connman_notifier *notifier = list->data;
355
356                 if (notifier->ipconfig_changed)
357                         notifier->ipconfig_changed(service, ipconfig);
358         }
359 }
360
361 int __connman_notifier_init(void)
362 {
363         DBG("");
364
365         connection = connman_dbus_get_connection();
366
367         service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
368                                                 NULL, NULL);
369
370
371         return 0;
372 }
373
374 void __connman_notifier_cleanup(void)
375 {
376         DBG("");
377
378         g_hash_table_destroy(service_hash);
379         service_hash = NULL;
380
381         dbus_connection_unref(connection);
382 }