src/clock.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  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 time_updates {
  33         TIME_UPDATES_UNKNOWN = 0,
  34         TIME_UPDATES_MANUAL  = 1,
  35         TIME_UPDATES_AUTO    = 2,
  36 };
  37
  38 enum timezone_updates {
  39         TIMEZONE_UPDATES_UNKNOWN = 0,
  40         TIMEZONE_UPDATES_MANUAL  = 1,
  41         TIMEZONE_UPDATES_AUTO    = 2,
  42 };
  43
  44 static enum time_updates time_updates_config = TIME_UPDATES_AUTO;
  45 static enum timezone_updates timezone_updates_config = TIMEZONE_UPDATES_AUTO;
  46
  47 static char *timezone_config = NULL;
  48
  49 static const char *time_updates2string(enum time_updates value)
  50 {
  51         switch (value) {
  52         case TIME_UPDATES_UNKNOWN:
  53                 break;
  54         case TIME_UPDATES_MANUAL:
  55                 return "manual";
  56         case TIME_UPDATES_AUTO:
  57                 return "auto";
  58         }
  59
  60         return NULL;
  61 }
  62
  63 static enum time_updates string2time_updates(const char *value)
  64 {
  65         if (g_strcmp0(value, "manual") == 0)
  66                 return TIME_UPDATES_MANUAL;
  67         else if (g_strcmp0(value, "auto") == 0)
  68                 return TIME_UPDATES_AUTO;
  69
  70         return TIME_UPDATES_UNKNOWN;
  71 }
  72
  73 static const char *timezone_updates2string(enum timezone_updates value)
  74 {
  75         switch (value) {
  76         case TIMEZONE_UPDATES_UNKNOWN:
  77                 break;
  78         case TIMEZONE_UPDATES_MANUAL:
  79                 return "manual";
  80         case TIMEZONE_UPDATES_AUTO:
  81                 return "auto";
  82         }
  83
  84         return NULL;
  85 }
  86
  87 static enum timezone_updates string2timezone_updates(const char *value)
  88 {
  89         if (g_strcmp0(value, "manual") == 0)
  90                 return TIMEZONE_UPDATES_MANUAL;
  91         else if (g_strcmp0(value, "auto") == 0)
  92                 return TIMEZONE_UPDATES_AUTO;
  93
  94         return TIMEZONE_UPDATES_UNKNOWN;
  95 }
  96
  97 static void append_timeservers(DBusMessageIter *iter, void *user_data)
  98 {
  99         int i;
 100         char **timeservers = __connman_timeserver_system_get();
 101
 102         if (timeservers == NULL)
 103                 return;
 104
 105         for (i = 0; timeservers[i] != NULL; i++) {
 106                 dbus_message_iter_append_basic(iter,
 107                                 DBUS_TYPE_STRING, &timeservers[i]);
 108         }
 109
 110         g_strfreev(timeservers);
 111 }
 112
 113 static DBusMessage *get_properties(DBusConnection *conn,
 114                                         DBusMessage *msg, void *data)
 115 {
 116         DBusMessage *reply;
 117         DBusMessageIter array, dict;
 118         struct timeval tv;
 119         const char *str;
 120
 121         DBG("conn %p", conn);
 122
 123         reply = dbus_message_new_method_return(msg);
 124         if (reply == NULL)
 125                 return NULL;
 126
 127         dbus_message_iter_init_append(reply, &array);
 128
 129         connman_dbus_dict_open(&array, &dict);
 130
 131         if (gettimeofday(&tv, NULL) == 0) {
 132                 dbus_uint64_t val = tv.tv_sec;
 133
 134                 connman_dbus_dict_append_basic(&dict, "Time",
 135                                                 DBUS_TYPE_UINT64, &val);
 136         }
 137
 138         str = time_updates2string(time_updates_config);
 139         if (str != NULL)
 140                 connman_dbus_dict_append_basic(&dict, "TimeUpdates",
 141                                                 DBUS_TYPE_STRING, &str);
 142
 143         if (timezone_config != NULL)
 144                 connman_dbus_dict_append_basic(&dict, "Timezone",
 145                                         DBUS_TYPE_STRING, &timezone_config);
 146
 147         str = timezone_updates2string(timezone_updates_config);
 148         if (str != NULL)
 149                 connman_dbus_dict_append_basic(&dict, "TimezoneUpdates",
 150                                                 DBUS_TYPE_STRING, &str);
 151
 152         connman_dbus_dict_append_array(&dict, "Timeservers",
 153                                 DBUS_TYPE_STRING, append_timeservers, NULL);
 154
 155         connman_dbus_dict_close(&array, &dict);
 156
 157         return reply;
 158 }
 159
 160 static DBusMessage *set_property(DBusConnection *conn,
 161                                         DBusMessage *msg, void *data)
 162 {
 163         DBusMessageIter iter, value;
 164         const char *name;
 165         int type;
 166
 167         DBG("conn %p", conn);
 168
 169         if (dbus_message_iter_init(msg, &iter) == FALSE)
 170                 return __connman_error_invalid_arguments(msg);
 171
 172         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 173                 return __connman_error_invalid_arguments(msg);
 174
 175         dbus_message_iter_get_basic(&iter, &name);
 176         dbus_message_iter_next(&iter);
 177
 178         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 179                 return __connman_error_invalid_arguments(msg);
 180
 181         dbus_message_iter_recurse(&iter, &value);
 182
 183         type = dbus_message_iter_get_arg_type(&value);
 184
 185         if (g_str_equal(name, "Time") == TRUE) {
 186                 struct timeval tv;
 187                 dbus_uint64_t newval;
 188
 189                 if (type != DBUS_TYPE_UINT64)
 190                         return __connman_error_invalid_arguments(msg);
 191
 192                 if (time_updates_config != TIME_UPDATES_MANUAL)
 193                         return __connman_error_permission_denied(msg);
 194
 195                 dbus_message_iter_get_basic(&value, &newval);
 196
 197                 tv.tv_sec = newval;
 198                 tv.tv_usec = 0;
 199
 200                 if (settimeofday(&tv, NULL) < 0)
 201                         return __connman_error_invalid_arguments(msg);
 202
 203                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 204                                 CONNMAN_CLOCK_INTERFACE, "Time",
 205                                 DBUS_TYPE_UINT64, &newval);
 206         } else if (g_str_equal(name, "TimeUpdates") == TRUE) {
 207                 const char *strval;
 208                 enum time_updates newval;
 209
 210                 if (type != DBUS_TYPE_STRING)
 211                         return __connman_error_invalid_arguments(msg);
 212
 213                 dbus_message_iter_get_basic(&value, &strval);
 214                 newval = string2time_updates(strval);
 215
 216                 if (newval == TIME_UPDATES_UNKNOWN)
 217                         return __connman_error_invalid_arguments(msg);
 218
 219                 if (newval == time_updates_config)
 220                         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 221
 222                 time_updates_config = newval;
 223
 224                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 225                                 CONNMAN_CLOCK_INTERFACE, "TimeUpdates",
 226                                 DBUS_TYPE_STRING, &strval);
 227         } else if (g_str_equal(name, "Timezone") == TRUE) {
 228                 const char *strval;
 229
 230                 if (type != DBUS_TYPE_STRING)
 231                         return __connman_error_invalid_arguments(msg);
 232
 233                 if (timezone_updates_config != TIMEZONE_UPDATES_MANUAL)
 234                         return __connman_error_permission_denied(msg);
 235
 236                 dbus_message_iter_get_basic(&value, &strval);
 237
 238                 if (__connman_timezone_change(strval) < 0)
 239                         return __connman_error_invalid_arguments(msg);
 240         } else if (g_str_equal(name, "TimezoneUpdates") == TRUE) {
 241                 const char *strval;
 242                 enum timezone_updates newval;
 243
 244                 if (type != DBUS_TYPE_STRING)
 245                         return __connman_error_invalid_arguments(msg);
 246
 247                 dbus_message_iter_get_basic(&value, &strval);
 248                 newval = string2timezone_updates(strval);
 249
 250                 if (newval == TIMEZONE_UPDATES_UNKNOWN)
 251                         return __connman_error_invalid_arguments(msg);
 252
 253                 if (newval == timezone_updates_config)
 254                         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 255
 256                 timezone_updates_config = newval;
 257
 258                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 259                                 CONNMAN_CLOCK_INTERFACE, "TimezoneUpdates",
 260                                 DBUS_TYPE_STRING, &strval);
 261         } else if (g_str_equal(name, "Timeservers") == TRUE) {
 262                 DBusMessageIter entry;
 263                 char **str = NULL;
 264                 GSList *list = NULL;
 265                 int count = 0;
 266
 267                 if (type != DBUS_TYPE_ARRAY)
 268                         return __connman_error_invalid_arguments(msg);
 269
 270                 dbus_message_iter_recurse(&value, &entry);
 271
 272                 while (dbus_message_iter_get_arg_type(&entry) == DBUS_TYPE_STRING) {
 273                         const char *val;
 274                         GSList *new_head;
 275
 276                         dbus_message_iter_get_basic(&entry, &val);
 277
 278                         new_head = __connman_timeserver_add_list(list, val);
 279                         if (list != new_head) {
 280                                 count++;
 281                                 list = new_head;
 282                         }
 283
 284                         dbus_message_iter_next(&entry);
 285                 }
 286
 287                 if (list != NULL) {
 288                         str = g_new0(char *, count+1);
 289
 290                         while (list != NULL) {
 291                                 count--;
 292                                 str[count] = list->data;
 293                                 list = g_slist_delete_link(list, list);
 294                         };
 295                 }
 296
 297                 __connman_timeserver_system_set(str);
 298
 299                 if (str != NULL)
 300                         g_strfreev(str);
 301
 302                 connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
 303                                 CONNMAN_CLOCK_INTERFACE, "Timeservers",
 304                                 DBUS_TYPE_STRING, append_timeservers, NULL);
 305         } else
 306                 return __connman_error_invalid_property(msg);
 307
 308         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 309 }
 310
 311 static const GDBusMethodTable clock_methods[] = {
 312         { GDBUS_METHOD("GetProperties",
 313                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 314                         get_properties) },
 315         { GDBUS_METHOD("SetProperty",
 316                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }), NULL,
 317                         set_property)   },
 318         { },
 319 };
 320
 321 static const GDBusSignalTable clock_signals[] = {
 322         { GDBUS_SIGNAL("PropertyChanged",
 323                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 324         { },
 325 };
 326
 327 static DBusConnection *connection = NULL;
 328
 329 void __connman_clock_update_timezone(void)
 330 {
 331         DBG("");
 332
 333         g_free(timezone_config);
 334         timezone_config = __connman_timezone_lookup();
 335
 336         if (timezone_config == NULL)
 337                 return;
 338
 339         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 340                                 CONNMAN_CLOCK_INTERFACE, "Timezone",
 341                                 DBUS_TYPE_STRING, &timezone_config);
 342 }
 343
 344 int __connman_clock_init(void)
 345 {
 346         DBG("");
 347
 348         connection = connman_dbus_get_connection();
 349         if (connection == NULL)
 350                 return -1;
 351
 352         __connman_timezone_init();
 353
 354         timezone_config = __connman_timezone_lookup();
 355
 356         g_dbus_register_interface(connection, CONNMAN_MANAGER_PATH,
 357                                                 CONNMAN_CLOCK_INTERFACE,
 358                                                 clock_methods, clock_signals,
 359                                                 NULL, NULL, NULL);
 360
 361         return 0;
 362 }
 363
 364 void __connman_clock_cleanup(void)
 365 {
 366         DBG("");
 367
 368         if (connection == NULL)
 369                 return;
 370
 371         g_dbus_unregister_interface(connection, CONNMAN_MANAGER_PATH,
 372                                                 CONNMAN_CLOCK_INTERFACE);
 373
 374         dbus_connection_unref(connection);
 375
 376         __connman_timezone_cleanup();
 377
 378         g_free(timezone_config);
 379 }