src/clock.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2013  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 <sys/time.h>
  27
  28 #include <gdbus.h>
  29
  30 #include "connman.h"
  31
  32 enum timezone_updates {
  33         TIMEZONE_UPDATES_UNKNOWN = 0,
  34         TIMEZONE_UPDATES_MANUAL  = 1,
  35         TIMEZONE_UPDATES_AUTO    = 2,
  36 };
  37
  38 static enum time_updates time_updates_config = TIME_UPDATES_AUTO;
  39 static enum timezone_updates timezone_updates_config = TIMEZONE_UPDATES_AUTO;
  40
  41 static char *timezone_config = NULL;
  42
  43 static const char *time_updates2string(enum time_updates value)
  44 {
  45         switch (value) {
  46         case TIME_UPDATES_UNKNOWN:
  47                 break;
  48         case TIME_UPDATES_MANUAL:
  49                 return "manual";
  50         case TIME_UPDATES_AUTO:
  51                 return "auto";
  52         }
  53
  54         return NULL;
  55 }
  56
  57 static enum time_updates string2time_updates(const char *value)
  58 {
  59         if (g_strcmp0(value, "manual") == 0)
  60                 return TIME_UPDATES_MANUAL;
  61         else if (g_strcmp0(value, "auto") == 0)
  62                 return TIME_UPDATES_AUTO;
  63
  64         return TIME_UPDATES_UNKNOWN;
  65 }
  66
  67 static const char *timezone_updates2string(enum timezone_updates value)
  68 {
  69         switch (value) {
  70         case TIMEZONE_UPDATES_UNKNOWN:
  71                 break;
  72         case TIMEZONE_UPDATES_MANUAL:
  73                 return "manual";
  74         case TIMEZONE_UPDATES_AUTO:
  75                 return "auto";
  76         }
  77
  78         return NULL;
  79 }
  80
  81 static enum timezone_updates string2timezone_updates(const char *value)
  82 {
  83         if (g_strcmp0(value, "manual") == 0)
  84                 return TIMEZONE_UPDATES_MANUAL;
  85         else if (g_strcmp0(value, "auto") == 0)
  86                 return TIMEZONE_UPDATES_AUTO;
  87
  88         return TIMEZONE_UPDATES_UNKNOWN;
  89 }
  90
  91 static void clock_properties_load(void)
  92 {
  93         GKeyFile *keyfile;
  94         char *str;
  95         enum time_updates time_value;
  96         enum timezone_updates timezone_value;
  97
  98         keyfile = __connman_storage_load_global();
  99         if (!keyfile)
 100                 return;
 101
 102         str = g_key_file_get_string(keyfile, "global", "TimeUpdates", NULL);
 103
 104         time_value = string2time_updates(str);
 105         if (time_value != TIME_UPDATES_UNKNOWN)
 106                 time_updates_config = time_value;
 107
 108         g_free(str);
 109
 110         str = g_key_file_get_string(keyfile, "global", "TimezoneUpdates",
 111                         NULL);
 112
 113         timezone_value = string2timezone_updates(str);
 114         if (timezone_value != TIMEZONE_UPDATES_UNKNOWN)
 115                 timezone_updates_config = timezone_value;
 116
 117         g_free(str);
 118
 119         g_key_file_free(keyfile);
 120 }
 121
 122 static void clock_properties_save(void)
 123 {
 124         GKeyFile *keyfile;
 125         const char *str;
 126
 127         keyfile = __connman_storage_load_global();
 128         if (!keyfile)
 129                 keyfile = g_key_file_new();
 130
 131         str = time_updates2string(time_updates_config);
 132         if (str)
 133                 g_key_file_set_string(keyfile, "global", "TimeUpdates", str);
 134         else
 135                 g_key_file_remove_key(keyfile, "global", "TimeUpdates", NULL);
 136
 137         str = timezone_updates2string(timezone_updates_config);
 138         if (str)
 139                 g_key_file_set_string(keyfile, "global", "TimezoneUpdates",
 140                                 str);
 141         else
 142                 g_key_file_remove_key(keyfile, "global", "TimezoneUpdates",
 143                                 NULL);
 144
 145         __connman_storage_save_global(keyfile);
 146
 147         g_key_file_free(keyfile);
 148 }
 149
 150 enum time_updates __connman_clock_timeupdates(void)
 151 {
 152         return time_updates_config;
 153 }
 154
 155 static void append_timeservers(DBusMessageIter *iter, void *user_data)
 156 {
 157         int i;
 158         char **timeservers = __connman_timeserver_system_get();
 159
 160         if (!timeservers)
 161                 return;
 162
 163         for (i = 0; timeservers[i]; i++) {
 164                 dbus_message_iter_append_basic(iter,
 165                                 DBUS_TYPE_STRING, &timeservers[i]);
 166         }
 167
 168         g_strfreev(timeservers);
 169 }
 170
 171 static DBusMessage *get_properties(DBusConnection *conn,
 172                                         DBusMessage *msg, void *data)
 173 {
 174         DBusMessage *reply;
 175         DBusMessageIter array, dict;
 176         struct timeval tv;
 177         const char *str;
 178
 179         DBG("conn %p", conn);
 180
 181         reply = dbus_message_new_method_return(msg);
 182         if (!reply)
 183                 return NULL;
 184
 185         dbus_message_iter_init_append(reply, &array);
 186
 187         connman_dbus_dict_open(&array, &dict);
 188
 189         if (gettimeofday(&tv, NULL) == 0) {
 190                 dbus_uint64_t val = tv.tv_sec;
 191
 192                 connman_dbus_dict_append_basic(&dict, "Time",
 193                                                 DBUS_TYPE_UINT64, &val);
 194         }
 195
 196         str = time_updates2string(time_updates_config);
 197         if (str)
 198                 connman_dbus_dict_append_basic(&dict, "TimeUpdates",
 199                                                 DBUS_TYPE_STRING, &str);
 200
 201         if (timezone_config)
 202                 connman_dbus_dict_append_basic(&dict, "Timezone",
 203                                         DBUS_TYPE_STRING, &timezone_config);
 204
 205         str = timezone_updates2string(timezone_updates_config);
 206         if (str)
 207                 connman_dbus_dict_append_basic(&dict, "TimezoneUpdates",
 208                                                 DBUS_TYPE_STRING, &str);
 209
 210         connman_dbus_dict_append_array(&dict, "Timeservers",
 211                                 DBUS_TYPE_STRING, append_timeservers, NULL);
 212
 213         connman_dbus_dict_close(&array, &dict);
 214
 215         return reply;
 216 }
 217
 218 static DBusMessage *set_property(DBusConnection *conn,
 219                                         DBusMessage *msg, void *data)
 220 {
 221         DBusMessageIter iter, value;
 222         const char *name;
 223         int type;
 224
 225         DBG("conn %p", conn);
 226
 227         if (!dbus_message_iter_init(msg, &iter))
 228                 return __connman_error_invalid_arguments(msg);
 229
 230         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 231                 return __connman_error_invalid_arguments(msg);
 232
 233         dbus_message_iter_get_basic(&iter, &name);
 234         dbus_message_iter_next(&iter);
 235
 236         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 237                 return __connman_error_invalid_arguments(msg);
 238
 239         dbus_message_iter_recurse(&iter, &value);
 240
 241         type = dbus_message_iter_get_arg_type(&value);
 242
 243         if (g_str_equal(name, "Time")) {
 244                 struct timeval tv;
 245                 dbus_uint64_t newval;
 246
 247                 if (type != DBUS_TYPE_UINT64)
 248                         return __connman_error_invalid_arguments(msg);
 249
 250                 if (time_updates_config != TIME_UPDATES_MANUAL)
 251                         return __connman_error_permission_denied(msg);
 252
 253                 dbus_message_iter_get_basic(&value, &newval);
 254
 255                 tv.tv_sec = newval;
 256                 tv.tv_usec = 0;
 257
 258                 if (settimeofday(&tv, NULL) < 0)
 259                         return __connman_error_invalid_arguments(msg);
 260
 261                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 262                                 CONNMAN_CLOCK_INTERFACE, "Time",
 263                                 DBUS_TYPE_UINT64, &newval);
 264         } else if (g_str_equal(name, "TimeUpdates")) {
 265                 const char *strval;
 266                 enum time_updates newval;
 267
 268                 if (type != DBUS_TYPE_STRING)
 269                         return __connman_error_invalid_arguments(msg);
 270
 271                 dbus_message_iter_get_basic(&value, &strval);
 272                 newval = string2time_updates(strval);
 273
 274                 if (newval == TIME_UPDATES_UNKNOWN)
 275                         return __connman_error_invalid_arguments(msg);
 276
 277                 if (newval == time_updates_config)
 278                         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 279
 280                 time_updates_config = newval;
 281
 282                 clock_properties_save();
 283                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 284                                 CONNMAN_CLOCK_INTERFACE, "TimeUpdates",
 285                                 DBUS_TYPE_STRING, &strval);
 286         } else if (g_str_equal(name, "Timezone")) {
 287                 const char *strval;
 288
 289                 if (type != DBUS_TYPE_STRING)
 290                         return __connman_error_invalid_arguments(msg);
 291
 292                 if (timezone_updates_config != TIMEZONE_UPDATES_MANUAL)
 293                         return __connman_error_permission_denied(msg);
 294
 295                 dbus_message_iter_get_basic(&value, &strval);
 296
 297                 if (__connman_timezone_change(strval) < 0)
 298                         return __connman_error_invalid_arguments(msg);
 299         } else if (g_str_equal(name, "TimezoneUpdates")) {
 300                 const char *strval;
 301                 enum timezone_updates newval;
 302
 303                 if (type != DBUS_TYPE_STRING)
 304                         return __connman_error_invalid_arguments(msg);
 305
 306                 dbus_message_iter_get_basic(&value, &strval);
 307                 newval = string2timezone_updates(strval);
 308
 309                 if (newval == TIMEZONE_UPDATES_UNKNOWN)
 310                         return __connman_error_invalid_arguments(msg);
 311
 312                 if (newval == timezone_updates_config)
 313                         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 314
 315                 timezone_updates_config = newval;
 316
 317                 clock_properties_save();
 318                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 319                                 CONNMAN_CLOCK_INTERFACE, "TimezoneUpdates",
 320                                 DBUS_TYPE_STRING, &strval);
 321         } else if (g_str_equal(name, "Timeservers")) {
 322                 DBusMessageIter entry;
 323                 char **str = NULL;
 324                 GSList *list = NULL;
 325                 int count = 0;
 326
 327                 if (type != DBUS_TYPE_ARRAY)
 328                         return __connman_error_invalid_arguments(msg);
 329
 330                 dbus_message_iter_recurse(&value, &entry);
 331
 332                 while (dbus_message_iter_get_arg_type(&entry) == DBUS_TYPE_STRING) {
 333                         const char *val;
 334                         GSList *new_head;
 335
 336                         dbus_message_iter_get_basic(&entry, &val);
 337
 338                         new_head = __connman_timeserver_add_list(list, val);
 339                         if (list != new_head) {
 340                                 count++;
 341                                 list = new_head;
 342                         }
 343
 344                         dbus_message_iter_next(&entry);
 345                 }
 346
 347                 if (list) {
 348                         str = g_new0(char *, count+1);
 349
 350                         while (list) {
 351                                 count--;
 352                                 str[count] = list->data;
 353                                 list = g_slist_delete_link(list, list);
 354                         };
 355                 }
 356
 357                 __connman_timeserver_system_set(str);
 358
 359                 if (str)
 360                         g_strfreev(str);
 361
 362                 connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
 363                                 CONNMAN_CLOCK_INTERFACE, "Timeservers",
 364                                 DBUS_TYPE_STRING, append_timeservers, NULL);
 365         } else
 366                 return __connman_error_invalid_property(msg);
 367
 368         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 369 }
 370
 371 static const GDBusMethodTable clock_methods[] = {
 372         { GDBUS_METHOD("GetProperties",
 373                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 374                         get_properties) },
 375         { GDBUS_METHOD("SetProperty",
 376                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }), NULL,
 377                         set_property)   },
 378         { },
 379 };
 380
 381 static const GDBusSignalTable clock_signals[] = {
 382         { GDBUS_SIGNAL("PropertyChanged",
 383                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 384         { },
 385 };
 386
 387 static DBusConnection *connection = NULL;
 388
 389 void __connman_clock_update_timezone(void)
 390 {
 391         DBG("");
 392
 393         g_free(timezone_config);
 394         timezone_config = __connman_timezone_lookup();
 395
 396         if (!timezone_config)
 397                 return;
 398
 399         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 400                                 CONNMAN_CLOCK_INTERFACE, "Timezone",
 401                                 DBUS_TYPE_STRING, &timezone_config);
 402 }
 403
 404 int __connman_clock_init(void)
 405 {
 406         DBG("");
 407
 408         connection = connman_dbus_get_connection();
 409         if (!connection)
 410                 return -1;
 411
 412         __connman_timezone_init();
 413
 414         timezone_config = __connman_timezone_lookup();
 415
 416         g_dbus_register_interface(connection, CONNMAN_MANAGER_PATH,
 417                                                 CONNMAN_CLOCK_INTERFACE,
 418                                                 clock_methods, clock_signals,
 419                                                 NULL, NULL, NULL);
 420
 421         clock_properties_load();
 422         return 0;
 423 }
 424
 425 void __connman_clock_cleanup(void)
 426 {
 427         DBG("");
 428
 429         if (!connection)
 430                 return;
 431
 432         g_dbus_unregister_interface(connection, CONNMAN_MANAGER_PATH,
 433                                                 CONNMAN_CLOCK_INTERFACE);
 434
 435         dbus_connection_unref(connection);
 436
 437         __connman_timezone_cleanup();
 438
 439         g_free(timezone_config);
 440 }