src/session.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2011  BWM CarIT GmbH. All rights reserved.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <gdbus.h>
  28
  29 #include "connman.h"
  30
  31 static DBusConnection *connection;
  32 static GHashTable *session_hash;
  33 static connman_bool_t sessionmode;
  34 static struct connman_session *ecall_session;
  35
  36 enum connman_session_trigger {
  37         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  38         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  39         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  40         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  41         CONNMAN_SESSION_TRIGGER_PERIODIC        = 4,
  42         CONNMAN_SESSION_TRIGGER_SERVICE         = 5,
  43         CONNMAN_SESSION_TRIGGER_ECALL           = 6,
  44 };
  45
  46 enum connman_session_roaming_policy {
  47         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  48         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  49         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  50         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  51         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  52         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  53 };
  54
  55 struct session_info {
  56         char *bearer;
  57         const char *name;
  58         char *ifname;
  59         connman_bool_t online;
  60         connman_bool_t priority;
  61         GSList *allowed_bearers;
  62         connman_bool_t avoid_handover;
  63         connman_bool_t stay_connected;
  64         unsigned int periodic_connect;
  65         unsigned int idle_timeout;
  66         connman_bool_t ecall;
  67         enum connman_session_roaming_policy roaming_policy;
  68         unsigned int marker;
  69
  70         struct connman_service *service;
  71 };
  72
  73 struct connman_session {
  74         char *owner;
  75         char *session_path;
  76         char *notify_path;
  77         guint notify_watch;
  78
  79         connman_bool_t append_all;
  80         connman_bool_t info_dirty;
  81         struct session_info info;
  82         struct session_info info_last;
  83
  84         GSequence *service_list;
  85 };
  86
  87 struct bearer_info {
  88         char *name;
  89         connman_bool_t match_all;
  90         enum connman_service_type service_type;
  91 };
  92
  93 static const char *trigger2string(enum connman_session_trigger trigger)
  94 {
  95         switch (trigger) {
  96         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
  97                 break;
  98         case CONNMAN_SESSION_TRIGGER_SETTING:
  99                 return "setting";
 100         case CONNMAN_SESSION_TRIGGER_CONNECT:
 101                 return "connect";
 102         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 103                 return "disconnect";
 104         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 105                 return "periodic";
 106         case CONNMAN_SESSION_TRIGGER_SERVICE:
 107                 return "service";
 108         case CONNMAN_SESSION_TRIGGER_ECALL:
 109                 return "ecall";
 110         }
 111
 112         return NULL;
 113 }
 114
 115 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 116 {
 117         switch (policy) {
 118         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 119                 break;
 120         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 121                 return "default";
 122         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 123                 return "always";
 124         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 125                 return "forbidden";
 126         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 127                 return "national";
 128         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 129                 return "international";
 130         }
 131
 132         return NULL;
 133 }
 134
 135 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 136 {
 137         if (g_strcmp0(policy, "default") == 0)
 138                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 139         else if (g_strcmp0(policy, "always") == 0)
 140                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 141         else if (g_strcmp0(policy, "forbidden") == 0)
 142                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 143         else if (g_strcmp0(policy, "national") == 0)
 144                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 145         else if (g_strcmp0(policy, "international") == 0)
 146                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 147         else
 148                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 149 }
 150
 151 static enum connman_service_type bearer2service(const char *bearer)
 152 {
 153         if (bearer == NULL)
 154                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 155
 156         if (g_strcmp0(bearer, "ethernet") == 0)
 157                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 158         else if (g_strcmp0(bearer, "wifi") == 0)
 159                 return CONNMAN_SERVICE_TYPE_WIFI;
 160         else if (g_strcmp0(bearer, "wimax") == 0)
 161                 return CONNMAN_SERVICE_TYPE_WIMAX;
 162         else if (g_strcmp0(bearer, "bluetooth") == 0)
 163                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 164         else if (g_strcmp0(bearer, "3g") == 0)
 165                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 166         else
 167                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 168 }
 169
 170 static char *service2bearer(enum connman_service_type type)
 171 {
 172         switch (type) {
 173         case CONNMAN_SERVICE_TYPE_ETHERNET:
 174                 return "ethernet";
 175         case CONNMAN_SERVICE_TYPE_WIFI:
 176                 return "wifi";
 177         case CONNMAN_SERVICE_TYPE_WIMAX:
 178                 return "wimax";
 179         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 180                 return "bluetooth";
 181         case CONNMAN_SERVICE_TYPE_CELLULAR:
 182                 return "3g";
 183         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 184         case CONNMAN_SERVICE_TYPE_SYSTEM:
 185         case CONNMAN_SERVICE_TYPE_GPS:
 186         case CONNMAN_SERVICE_TYPE_VPN:
 187         case CONNMAN_SERVICE_TYPE_GADGET:
 188                 return "";
 189         }
 190
 191         return "";
 192 }
 193
 194 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 195 {
 196         struct bearer_info *info = data;
 197
 198         g_free(info->name);
 199         g_free(info);
 200 }
 201
 202 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 203 {
 204         struct bearer_info *info;
 205         DBusMessageIter array;
 206         GSList *list = NULL;
 207
 208         dbus_message_iter_recurse(iter, &array);
 209
 210         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 211                 char *bearer = NULL;
 212
 213                 dbus_message_iter_get_basic(&array, &bearer);
 214
 215                 info = g_try_new0(struct bearer_info, 1);
 216                 if (info == NULL) {
 217                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 218                         g_slist_free(list);
 219
 220                         return NULL;
 221                 }
 222
 223                 info->name = g_strdup(bearer);
 224                 info->service_type = bearer2service(info->name);
 225
 226                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 227                                 g_strcmp0(info->name, "*") == 0) {
 228                         info->match_all = TRUE;
 229                 } else {
 230                         info->match_all = FALSE;
 231                 }
 232
 233                 list = g_slist_append(list, info);
 234
 235                 dbus_message_iter_next(&array);
 236         }
 237
 238         return list;
 239 }
 240
 241 static GSList *session_allowed_bearers_any(void)
 242 {
 243         struct bearer_info *info;
 244         GSList *list = NULL;
 245
 246         info = g_try_new0(struct bearer_info, 1);
 247         if (info == NULL) {
 248                 g_slist_free(list);
 249
 250                 return NULL;
 251         }
 252
 253         info->name = g_strdup("");
 254         info->match_all = TRUE;
 255         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 256
 257         list = g_slist_append(list, info);
 258
 259         return list;
 260 }
 261
 262 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 263 {
 264         struct session_info *info = user_data;
 265         GSList *list;
 266
 267         for (list = info->allowed_bearers;
 268                         list != NULL; list = list->next) {
 269                 struct bearer_info *info = list->data;
 270
 271                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 272                                                 &info->name);
 273         }
 274 }
 275
 276 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 277 {
 278         struct connman_service *service = user_data;
 279         struct connman_ipconfig *ipconfig_ipv4;
 280
 281         if (service == NULL)
 282                 return;
 283
 284         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 285         if (ipconfig_ipv4 == NULL)
 286                 return;
 287
 288         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 289 }
 290
 291 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 292 {
 293         struct connman_service *service = user_data;
 294         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 295
 296         if (service == NULL)
 297                 return;
 298
 299         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 300         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 301         if (ipconfig_ipv6 == NULL)
 302                 return;
 303
 304         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 305 }
 306
 307 static void append_notify(DBusMessageIter *dict,
 308                                         struct connman_session *session)
 309 {
 310         struct session_info *info = &session->info;
 311         struct session_info *info_last = &session->info_last;
 312         const char *policy;
 313
 314         if (session->append_all == TRUE ||
 315                         info->bearer != info_last->bearer) {
 316                 connman_dbus_dict_append_basic(dict, "Bearer",
 317                                                 DBUS_TYPE_STRING,
 318                                                 &info->bearer);
 319                 info_last->bearer = info->bearer;
 320         }
 321
 322         if (session->append_all == TRUE ||
 323                         info->online != info_last->online) {
 324                 connman_dbus_dict_append_basic(dict, "Online",
 325                                                 DBUS_TYPE_BOOLEAN,
 326                                                 &info->online);
 327                 info_last->online = info->online;
 328         }
 329
 330         if (session->append_all == TRUE ||
 331                         info->name != info_last->name) {
 332                 connman_dbus_dict_append_basic(dict, "Name",
 333                                                 DBUS_TYPE_STRING,
 334                                                 &info->name);
 335                 info_last->name = info->name;
 336         }
 337
 338         if (session->append_all == TRUE ||
 339                         info->service != info_last->service) {
 340                 connman_dbus_dict_append_dict(dict, "IPv4",
 341                                                 append_ipconfig_ipv4,
 342                                                 info->service);
 343
 344                 connman_dbus_dict_append_dict(dict, "IPv6",
 345                                                 append_ipconfig_ipv6,
 346                                                 info->service);
 347
 348                 connman_dbus_dict_append_basic(dict, "Interface",
 349                                                 DBUS_TYPE_STRING,
 350                                                 &info->ifname);
 351
 352                 info_last->ifname = info->ifname;
 353                 info_last->service = info->service;
 354         }
 355
 356
 357         if (session->append_all == TRUE ||
 358                         info->priority != info_last->priority) {
 359                 connman_dbus_dict_append_basic(dict, "Priority",
 360                                                 DBUS_TYPE_BOOLEAN,
 361                                                 &info->priority);
 362                 info_last->priority = info->priority;
 363         }
 364
 365         if (session->append_all == TRUE ||
 366                         info->allowed_bearers != info_last->allowed_bearers) {
 367                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 368                                                 DBUS_TYPE_STRING,
 369                                                 append_allowed_bearers,
 370                                                 info);
 371                 info_last->allowed_bearers = info->allowed_bearers;
 372         }
 373
 374         if (session->append_all == TRUE ||
 375                         info->avoid_handover != info_last->avoid_handover) {
 376                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 377                                                 DBUS_TYPE_BOOLEAN,
 378                                                 &info->avoid_handover);
 379                 info_last->avoid_handover = info->avoid_handover;
 380         }
 381
 382         if (session->append_all == TRUE ||
 383                         info->stay_connected != info_last->stay_connected) {
 384                 connman_dbus_dict_append_basic(dict, "StayConnected",
 385                                                 DBUS_TYPE_BOOLEAN,
 386                                                 &info->stay_connected);
 387                 info_last->stay_connected = info->stay_connected;
 388         }
 389
 390         if (session->append_all == TRUE ||
 391                         info->periodic_connect != info_last->periodic_connect) {
 392                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 393                                                 DBUS_TYPE_UINT32,
 394                                                 &info->periodic_connect);
 395                 info_last->periodic_connect = info->periodic_connect;
 396         }
 397
 398         if (session->append_all == TRUE ||
 399                         info->idle_timeout != info_last->idle_timeout) {
 400                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 401                                                 DBUS_TYPE_UINT32,
 402                                                 &info->idle_timeout);
 403                 info_last->idle_timeout = info->idle_timeout;
 404         }
 405
 406         if (session->append_all == TRUE ||
 407                         info->ecall != info_last->ecall) {
 408                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 409                                                 DBUS_TYPE_BOOLEAN,
 410                                                 &info->ecall);
 411                 info_last->ecall = info->ecall;
 412         }
 413
 414         if (session->append_all == TRUE ||
 415                         info->roaming_policy != info_last->roaming_policy) {
 416                 policy = roamingpolicy2string(info->roaming_policy);
 417                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 418                                                 DBUS_TYPE_STRING,
 419                                                 &policy);
 420                 info_last->roaming_policy = info->roaming_policy;
 421         }
 422
 423         if (session->append_all == TRUE ||
 424                         info->marker != info_last->marker) {
 425                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 426                                                 DBUS_TYPE_UINT32,
 427                                                 &info->marker);
 428                 info_last->marker = info->marker;
 429         }
 430
 431         session->append_all = FALSE;
 432         session->info_dirty = FALSE;
 433 }
 434
 435 static gboolean session_notify(gpointer user_data)
 436 {
 437         struct connman_session *session = user_data;
 438         DBusMessage *msg;
 439         DBusMessageIter array, dict;
 440
 441         if (session->info_dirty == FALSE)
 442                 return 0;
 443
 444         DBG("session %p owner %s notify_path %s", session,
 445                 session->owner, session->notify_path);
 446
 447         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 448                                                 CONNMAN_NOTIFICATION_INTERFACE,
 449                                                 "Update");
 450         if (msg == NULL)
 451                 return FALSE;
 452
 453         dbus_message_iter_init_append(msg, &array);
 454         connman_dbus_dict_open(&array, &dict);
 455
 456         append_notify(&dict, session);
 457
 458         connman_dbus_dict_close(&array, &dict);
 459
 460         g_dbus_send_message(connection, msg);
 461
 462         session->info_dirty = FALSE;
 463
 464         return FALSE;
 465 }
 466
 467 static void ipconfig_ipv4_changed(struct connman_session *session)
 468 {
 469         struct session_info *info = &session->info;
 470
 471         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 472                                                 "IPv4", append_ipconfig_ipv4,
 473                                                 info->service);
 474 }
 475
 476 static void ipconfig_ipv6_changed(struct connman_session *session)
 477 {
 478         struct session_info *info = &session->info;
 479
 480         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 481                                                 "IPv6", append_ipconfig_ipv6,
 482                                                 info->service);
 483 }
 484
 485 static GSequenceIter *lookup_service(struct connman_session *session,
 486                                         struct connman_service *service)
 487 {
 488         GSequenceIter *iter;
 489
 490         if (service == NULL)
 491                 return NULL;
 492
 493         iter = g_sequence_get_begin_iter(session->service_list);
 494
 495         while (g_sequence_iter_is_end(iter) == FALSE) {
 496                 struct connman_service *service_iter = g_sequence_get(iter);
 497
 498                 if (service_iter == service)
 499                         return iter;
 500
 501                 iter = g_sequence_iter_next(iter);
 502         }
 503
 504         return NULL;
 505 }
 506
 507 static connman_bool_t service_type_match(struct connman_session *session,
 508                                         struct connman_service *service)
 509 {
 510         struct session_info *info = &session->info;
 511         GSList *list;
 512
 513         for (list = info->allowed_bearers;
 514                         list != NULL; list = list->next) {
 515                 struct bearer_info *info = list->data;
 516                 enum connman_service_type service_type;
 517
 518                 if (info->match_all == TRUE)
 519                         return TRUE;
 520
 521                 service_type = connman_service_get_type(service);
 522                 if (info->service_type == service_type)
 523                         return TRUE;
 524         }
 525
 526         return FALSE;
 527 }
 528
 529 static connman_bool_t service_match(struct connman_session *session,
 530                                         struct connman_service *service)
 531 {
 532         if (service_type_match(session, service) == FALSE)
 533                 return FALSE;
 534
 535         return TRUE;
 536 }
 537
 538 static int service_type_weight(enum connman_service_type type)
 539 {
 540         /*
 541          * The session doesn't care which service
 542          * to use. Nevertheless we have to sort them
 543          * according their type. The ordering is
 544          *
 545          * 1. Ethernet
 546          * 2. Bluetooth
 547          * 3. WiFi/WiMAX
 548          * 4. GSM/UTMS/3G
 549          */
 550
 551         switch (type) {
 552         case CONNMAN_SERVICE_TYPE_ETHERNET:
 553                 return 4;
 554         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 555                 return 3;
 556         case CONNMAN_SERVICE_TYPE_WIFI:
 557         case CONNMAN_SERVICE_TYPE_WIMAX:
 558                 return 2;
 559         case CONNMAN_SERVICE_TYPE_CELLULAR:
 560                 return 1;
 561         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 562         case CONNMAN_SERVICE_TYPE_SYSTEM:
 563         case CONNMAN_SERVICE_TYPE_GPS:
 564         case CONNMAN_SERVICE_TYPE_VPN:
 565         case CONNMAN_SERVICE_TYPE_GADGET:
 566                 break;
 567         }
 568
 569         return 0;
 570 }
 571
 572 static gint sort_allowed_bearers(struct connman_service *service_a,
 573                                         struct connman_service *service_b,
 574                                         struct connman_session *session)
 575 {
 576         struct session_info *info = &session->info;
 577         GSList *list;
 578         enum connman_service_type type_a, type_b;
 579         int weight_a, weight_b;
 580
 581         type_a = connman_service_get_type(service_a);
 582         type_b = connman_service_get_type(service_b);
 583
 584         for (list = info->allowed_bearers;
 585                         list != NULL; list = list->next) {
 586                 struct bearer_info *info = list->data;
 587
 588                 if (info->match_all == TRUE) {
 589                         if (type_a != type_b) {
 590                                 weight_a = service_type_weight(type_a);
 591                                 weight_b = service_type_weight(type_b);
 592
 593                                 if (weight_a > weight_b)
 594                                         return -1;
 595
 596                                 if (weight_a < weight_b)
 597                                         return 1;
 598
 599                                 return 0;
 600                         }
 601                 }
 602
 603                 if (type_a == info->service_type &&
 604                                 type_b == info->service_type) {
 605                         return 0;
 606                 }
 607
 608                 if (type_a == info->service_type &&
 609                                 type_b != info->service_type) {
 610                         return -1;
 611                 }
 612
 613                 if (type_a != info->service_type &&
 614                                 type_b == info->service_type) {
 615                         return 1;
 616                 }
 617         }
 618
 619         return 0;
 620 }
 621
 622 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 623 {
 624         struct connman_service *service_a = (void *)a;
 625         struct connman_service *service_b = (void *)b;
 626         struct connman_session *session = user_data;
 627
 628         return sort_allowed_bearers(service_a, service_b, session);
 629 }
 630
 631 static void cleanup_session(gpointer user_data)
 632 {
 633         struct connman_session *session = user_data;
 634         struct session_info *info = &session->info;
 635
 636         DBG("remove %s", session->session_path);
 637
 638         g_sequence_free(session->service_list);
 639
 640         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 641         g_slist_free(info->allowed_bearers);
 642
 643         g_free(session->owner);
 644         g_free(session->session_path);
 645         g_free(session->notify_path);
 646
 647         g_free(session);
 648 }
 649
 650 static void release_session(gpointer key, gpointer value, gpointer user_data)
 651 {
 652         struct connman_session *session = value;
 653         DBusMessage *message;
 654
 655         DBG("owner %s path %s", session->owner, session->notify_path);
 656
 657         if (session->notify_watch > 0)
 658                 g_dbus_remove_watch(connection, session->notify_watch);
 659
 660         g_dbus_unregister_interface(connection, session->session_path,
 661                                                 CONNMAN_SESSION_INTERFACE);
 662
 663         message = dbus_message_new_method_call(session->owner,
 664                                                 session->notify_path,
 665                                                 CONNMAN_NOTIFICATION_INTERFACE,
 666                                                 "Release");
 667         if (message == NULL)
 668                 return;
 669
 670         dbus_message_set_no_reply(message, TRUE);
 671
 672         g_dbus_send_message(connection, message);
 673 }
 674
 675 static int session_disconnect(struct connman_session *session)
 676 {
 677         DBG("session %p, %s", session, session->owner);
 678
 679         if (session->notify_watch > 0)
 680                 g_dbus_remove_watch(connection, session->notify_watch);
 681
 682         g_dbus_unregister_interface(connection, session->session_path,
 683                                                 CONNMAN_SESSION_INTERFACE);
 684
 685         g_hash_table_remove(session_hash, session->session_path);
 686
 687         return 0;
 688 }
 689
 690 static void owner_disconnect(DBusConnection *conn, void *user_data)
 691 {
 692         struct connman_session *session = user_data;
 693
 694         DBG("session %p, %s died", session, session->owner);
 695
 696         session_disconnect(session);
 697 }
 698
 699 static DBusMessage *destroy_session(DBusConnection *conn,
 700                                         DBusMessage *msg, void *user_data)
 701 {
 702         struct connman_session *session = user_data;
 703
 704         DBG("session %p", session);
 705
 706         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 707 }
 708
 709 static void update_info(struct session_info *info)
 710 {
 711         enum connman_service_type type;
 712         int idx;
 713
 714         if (info->service != NULL) {
 715                 type = connman_service_get_type(info->service);
 716                 info->bearer = service2bearer(type);
 717
 718                 info->online = __connman_service_is_connected(info->service);
 719                 info->name = __connman_service_get_name(info->service);
 720                 if (info->name == NULL)
 721                         info->name = "";
 722
 723                 idx = __connman_service_get_index(info->service);
 724                 info->ifname = connman_inet_ifname(idx);
 725                 if (info->ifname == NULL)
 726                         info->ifname = "";
 727         } else {
 728                 info->bearer = "";
 729                 info->online = FALSE;
 730                 info->name = "";
 731                 info->ifname = "";
 732         }
 733 }
 734
 735 static void select_and_connect(struct connman_session *session,
 736                                 connman_bool_t do_connect)
 737 {
 738         struct session_info *info = &session->info;
 739         struct connman_service *service = NULL;
 740         GSequenceIter *iter;
 741
 742         DBG("session %p connect %d", session, do_connect);
 743
 744         iter = g_sequence_get_begin_iter(session->service_list);
 745
 746         while (g_sequence_iter_is_end(iter) == FALSE) {
 747                 service = g_sequence_get(iter);
 748
 749                 if (__connman_service_is_connecting(service) == TRUE ||
 750                                 __connman_service_is_connected(service) == TRUE) {
 751                         break;
 752                 }
 753
 754                 if (__connman_service_is_idle(service) == TRUE &&
 755                                 do_connect == TRUE) {
 756                         break;
 757                 }
 758
 759                 service = NULL;
 760
 761                 iter = g_sequence_iter_next(iter);
 762         }
 763
 764         if (info->service != NULL && info->service != service) {
 765                 __connman_service_disconnect(info->service);
 766                 info->service = NULL;
 767         }
 768
 769         if (service != NULL) {
 770                 info->service = service;
 771
 772                 if (do_connect == TRUE)
 773                         __connman_service_connect(info->service);
 774         }
 775 }
 776
 777 static void session_changed(struct connman_session *session,
 778                                 enum connman_session_trigger trigger)
 779 {
 780         struct session_info *info = &session->info;
 781         struct session_info *info_last = &session->info_last;
 782         GSequenceIter *iter;
 783
 784         /*
 785          * TODO: This only a placeholder for the 'real' algorithm to
 786          * play a bit around. So we are going to improve it step by step.
 787          */
 788
 789         DBG("session %p trigger %s", session, trigger2string(trigger));
 790
 791         switch (trigger) {
 792         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 793                 DBG("ignore session changed event");
 794                 return;
 795         case CONNMAN_SESSION_TRIGGER_SETTING:
 796                 if (info->service != NULL) {
 797                         iter = lookup_service(session, info->service);
 798                         if (iter == NULL) {
 799                                 /*
 800                                  * This service is not part of this
 801                                  * session anymore.
 802                                  */
 803
 804                                 __connman_service_disconnect(info->service);
 805                                 info->service = NULL;
 806                         }
 807                 }
 808
 809                 /* Try to free ride */
 810                 if (info->online == FALSE)
 811                         select_and_connect(session, FALSE);
 812
 813                 break;
 814         case CONNMAN_SESSION_TRIGGER_CONNECT:
 815                 if (info->online == TRUE)
 816                         break;
 817
 818                 select_and_connect(session, TRUE);
 819
 820                 break;
 821         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 822                 if (info->online == FALSE)
 823                         break;
 824
 825                 if (info->service != NULL)
 826                         __connman_service_disconnect(info->service);
 827
 828                 info->service = NULL;
 829
 830                 break;
 831         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 832                 select_and_connect(session, TRUE);
 833
 834                 break;
 835         case CONNMAN_SESSION_TRIGGER_SERVICE:
 836                 if (info->online == TRUE)
 837                         break;
 838
 839                 if (info->stay_connected == TRUE) {
 840                         DBG("StayConnected");
 841                         select_and_connect(session, TRUE);
 842
 843                         break;
 844                 }
 845
 846                 /* Try to free ride */
 847                 select_and_connect(session, FALSE);
 848
 849                 break;
 850         case CONNMAN_SESSION_TRIGGER_ECALL:
 851                 if (info->online == FALSE && info->service != NULL)
 852                         info->service = NULL;
 853
 854                 break;
 855         }
 856
 857         if (info->service != info_last->service) {
 858                 update_info(info);
 859                 session->info_dirty = TRUE;
 860         }
 861
 862         session_notify(session);
 863 }
 864
 865 static DBusMessage *connect_session(DBusConnection *conn,
 866                                         DBusMessage *msg, void *user_data)
 867 {
 868         struct connman_session *session = user_data;
 869
 870         DBG("session %p", session);
 871
 872         if (ecall_session != NULL && ecall_session != session)
 873                 return __connman_error_failed(msg, EBUSY);
 874
 875         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 876
 877         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 878 }
 879
 880 static DBusMessage *disconnect_session(DBusConnection *conn,
 881                                         DBusMessage *msg, void *user_data)
 882 {
 883         struct connman_session *session = user_data;
 884
 885         DBG("session %p", session);
 886
 887         if (ecall_session != NULL && ecall_session != session)
 888                 return __connman_error_failed(msg, EBUSY);
 889
 890         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 891
 892         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 893 }
 894
 895 static void print_name(gpointer data, gpointer user_data)
 896 {
 897         struct connman_service *service = data;
 898
 899         DBG("service %p type %s name %s", service,
 900                 service2bearer(connman_service_get_type(service)),
 901                 __connman_service_get_name(service));
 902 }
 903
 904 static void update_allowed_bearers(struct connman_session *session)
 905 {
 906         if (session->service_list != NULL)
 907                 g_sequence_free(session->service_list);
 908
 909         session->service_list = __connman_service_get_list(session,
 910                                                                 service_match);
 911         g_sequence_sort(session->service_list, sort_services, session);
 912         g_sequence_foreach(session->service_list, print_name, NULL);
 913
 914         session->info_dirty = TRUE;
 915 }
 916
 917 static void update_ecall_sessions(struct connman_session *session)
 918 {
 919         struct session_info *info = &session->info;
 920         struct connman_session *session_iter;
 921         GHashTableIter iter;
 922         gpointer key, value;
 923
 924         g_hash_table_iter_init(&iter, session_hash);
 925
 926         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 927                 session_iter = value;
 928
 929                 if (session_iter == session)
 930                         continue;
 931
 932                 session_iter->info.ecall = info->ecall;
 933                 session_iter->info_dirty = TRUE;
 934
 935                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
 936         }
 937 }
 938
 939 static void update_ecall(struct connman_session *session)
 940 {
 941         struct session_info *info = &session->info;
 942         struct session_info *info_last = &session->info_last;
 943
 944         DBG("session %p ecall_session %p ecall %d -> %d", session,
 945                 ecall_session, info_last->ecall, info->ecall);
 946
 947         if (ecall_session == NULL) {
 948                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
 949                         goto err;
 950
 951                 ecall_session = session;
 952         } else if (ecall_session == session) {
 953                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
 954                         goto err;
 955
 956                 ecall_session = NULL;
 957         } else {
 958                 goto err;
 959         }
 960
 961         update_ecall_sessions(session);
 962
 963         session->info_dirty = TRUE;
 964         return;
 965
 966 err:
 967         /* not a valid transition */
 968         info->ecall = info_last->ecall;
 969 }
 970
 971 static DBusMessage *change_session(DBusConnection *conn,
 972                                         DBusMessage *msg, void *user_data)
 973 {
 974         struct connman_session *session = user_data;
 975         struct session_info *info = &session->info;
 976         struct session_info *info_last = &session->info_last;
 977         DBusMessageIter iter, value;
 978         const char *name;
 979         GSList *allowed_bearers;
 980
 981         DBG("session %p", session);
 982         if (dbus_message_iter_init(msg, &iter) == FALSE)
 983                 return __connman_error_invalid_arguments(msg);
 984
 985         dbus_message_iter_get_basic(&iter, &name);
 986         dbus_message_iter_next(&iter);
 987         dbus_message_iter_recurse(&iter, &value);
 988
 989         switch (dbus_message_iter_get_arg_type(&value)) {
 990         case DBUS_TYPE_ARRAY:
 991                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
 992                         allowed_bearers = session_parse_allowed_bearers(&value);
 993
 994                         g_slist_foreach(info->allowed_bearers,
 995                                         cleanup_bearer_info, NULL);
 996                         g_slist_free(info->allowed_bearers);
 997
 998                         if (allowed_bearers == NULL) {
 999                                 allowed_bearers = session_allowed_bearers_any();
1000
1001                                 if (allowed_bearers == NULL)
1002                                         return __connman_error_failed(msg, ENOMEM);
1003                         }
1004
1005                         info->allowed_bearers = allowed_bearers;
1006
1007                         update_allowed_bearers(session);
1008                 } else {
1009                         goto err;
1010                 }
1011                 break;
1012         case DBUS_TYPE_BOOLEAN:
1013                 if (g_str_equal(name, "Priority") == TRUE) {
1014                         dbus_message_iter_get_basic(&value,
1015                                         &info->priority);
1016
1017                         if (info_last->priority != info->priority)
1018                                 session->info_dirty = TRUE;
1019                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1020                         dbus_message_iter_get_basic(&value,
1021                                         &info->avoid_handover);
1022
1023                         if (info_last->avoid_handover != info->avoid_handover)
1024                                 session->info_dirty = TRUE;
1025                         } else if (g_str_equal(name, "StayConnected") == TRUE) {
1026                         dbus_message_iter_get_basic(&value,
1027                                         &info->stay_connected);
1028
1029                         if (info_last->stay_connected != info->stay_connected)
1030                                 session->info_dirty = TRUE;
1031                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1032                         dbus_message_iter_get_basic(&value,
1033                                         &info->ecall);
1034
1035                         update_ecall(session);
1036                 } else {
1037                         goto err;
1038                 }
1039                 break;
1040         case DBUS_TYPE_UINT32:
1041                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1042                         dbus_message_iter_get_basic(&value,
1043                                         &info->periodic_connect);
1044
1045                         if (info_last->periodic_connect != info->periodic_connect)
1046                                 session->info_dirty = TRUE;
1047                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1048                         dbus_message_iter_get_basic(&value,
1049                                         &info->idle_timeout);
1050
1051                         if (info_last->idle_timeout != info->idle_timeout)
1052                                 session->info_dirty = TRUE;
1053                 } else {
1054                         goto err;
1055                 }
1056                 break;
1057         case DBUS_TYPE_STRING:
1058                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1059                         const char *val;
1060                         dbus_message_iter_get_basic(&value, &val);
1061                         info->roaming_policy =
1062                                         string2roamingpolicy(val);
1063
1064                         if (info_last->roaming_policy != info->roaming_policy)
1065                                 session->info_dirty = TRUE;
1066                 } else {
1067                         goto err;
1068                 }
1069                 break;
1070         default:
1071                 goto err;
1072         }
1073
1074         if (session->info_dirty == TRUE)
1075                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1076
1077         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1078
1079 err:
1080         return __connman_error_invalid_arguments(msg);
1081 }
1082
1083 static GDBusMethodTable session_methods[] = {
1084         { "Destroy",    "",   "", destroy_session    },
1085         { "Connect",    "",   "", connect_session    },
1086         { "Disconnect", "",   "", disconnect_session },
1087         { "Change",     "sv", "", change_session     },
1088         { },
1089 };
1090
1091 int __connman_session_create(DBusMessage *msg)
1092 {
1093         const char *owner, *notify_path;
1094         char *session_path = NULL;
1095         DBusMessageIter iter, array;
1096         struct connman_session *session;
1097         struct session_info *info, *info_last;
1098
1099         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1100         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1101         enum connman_session_roaming_policy roaming_policy =
1102                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1103         GSList *allowed_bearers = NULL;
1104         unsigned int periodic_connect = 0;
1105         unsigned int idle_timeout = 0;
1106
1107         int err;
1108
1109         owner = dbus_message_get_sender(msg);
1110
1111         DBG("owner %s", owner);
1112
1113         if (ecall_session != NULL) {
1114                 /*
1115                  * If there is an emergency call already going on,
1116                  * ignore session creation attempt
1117                  */
1118                 err = -EBUSY;
1119                 goto err;
1120         }
1121
1122         dbus_message_iter_init(msg, &iter);
1123         dbus_message_iter_recurse(&iter, &array);
1124
1125         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1126                 DBusMessageIter entry, value;
1127                 const char *key, *val;
1128
1129                 dbus_message_iter_recurse(&array, &entry);
1130                 dbus_message_iter_get_basic(&entry, &key);
1131
1132                 dbus_message_iter_next(&entry);
1133                 dbus_message_iter_recurse(&entry, &value);
1134
1135                 switch (dbus_message_iter_get_arg_type(&value)) {
1136                 case DBUS_TYPE_ARRAY:
1137                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1138                                 allowed_bearers =
1139                                         session_parse_allowed_bearers(&value);
1140                         } else {
1141                                 return -EINVAL;
1142                         }
1143                         break;
1144                 case DBUS_TYPE_BOOLEAN:
1145                         if (g_str_equal(key, "Priority") == TRUE) {
1146                                 dbus_message_iter_get_basic(&value,
1147                                                         &priority);
1148                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1149                                 dbus_message_iter_get_basic(&value,
1150                                                         &avoid_handover);
1151                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1152                                 dbus_message_iter_get_basic(&value,
1153                                                         &stay_connected);
1154                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1155                                 dbus_message_iter_get_basic(&value,
1156                                                         &ecall);
1157                         } else {
1158                                 return -EINVAL;
1159                         }
1160                         break;
1161                 case DBUS_TYPE_UINT32:
1162                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1163                                 dbus_message_iter_get_basic(&value,
1164                                                         &periodic_connect);
1165                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1166                                 dbus_message_iter_get_basic(&value,
1167                                                         &idle_timeout);
1168                         } else {
1169                                 return -EINVAL;
1170                         }
1171                         break;
1172                 case DBUS_TYPE_STRING:
1173                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1174                                 dbus_message_iter_get_basic(&value, &val);
1175                                 roaming_policy = string2roamingpolicy(val);
1176                         } else {
1177                                 return -EINVAL;
1178                         }
1179                 }
1180                 dbus_message_iter_next(&array);
1181         }
1182
1183         dbus_message_iter_next(&iter);
1184         dbus_message_iter_get_basic(&iter, &notify_path);
1185
1186         if (notify_path == NULL) {
1187                 err = -EINVAL;
1188                 goto err;
1189         }
1190
1191         session_path = g_strdup_printf("/sessions%s", notify_path);
1192         if (session_path == NULL) {
1193                 err = -ENOMEM;
1194                 goto err;
1195         }
1196
1197         session = g_hash_table_lookup(session_hash, session_path);
1198         if (session != NULL) {
1199                 err = -EEXIST;
1200                 goto err;
1201         }
1202
1203         session = g_try_new0(struct connman_session, 1);
1204         if (session == NULL) {
1205                 err = -ENOMEM;
1206                 goto err;
1207         }
1208
1209         info = &session->info;
1210         info_last = &session->info_last;
1211
1212         session->owner = g_strdup(owner);
1213         session->session_path = session_path;
1214         session->notify_path = g_strdup(notify_path);
1215         session->notify_watch =
1216                 g_dbus_add_disconnect_watch(connection, session->owner,
1217                                         owner_disconnect, session, NULL);
1218
1219         info->bearer = "";
1220         info->online = FALSE;
1221         info->priority = priority;
1222         info->avoid_handover = avoid_handover;
1223         info->stay_connected = stay_connected;
1224         info->periodic_connect = periodic_connect;
1225         info->idle_timeout = idle_timeout;
1226         info->ecall = ecall;
1227         info->roaming_policy = roaming_policy;
1228         info->service = NULL;
1229         info->marker = 0;
1230
1231         if (allowed_bearers == NULL) {
1232                 info->allowed_bearers =
1233                                 session_allowed_bearers_any();
1234
1235                 if (info->allowed_bearers == NULL) {
1236                         err = -ENOMEM;
1237                         goto err;
1238                 }
1239         } else {
1240                 info->allowed_bearers = allowed_bearers;
1241         }
1242
1243         g_hash_table_replace(session_hash, session->session_path, session);
1244
1245         DBG("add %s", session->session_path);
1246
1247         if (g_dbus_register_interface(connection, session->session_path,
1248                                         CONNMAN_SESSION_INTERFACE,
1249                                         session_methods, NULL,
1250                                         NULL, session, NULL) == FALSE) {
1251                 connman_error("Failed to register %s", session->session_path);
1252                 g_hash_table_remove(session_hash, session->session_path);
1253                 session = NULL;
1254
1255                 err = -EINVAL;
1256                 goto err;
1257         }
1258
1259         g_dbus_send_reply(connection, msg,
1260                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1261                                 DBUS_TYPE_INVALID);
1262
1263
1264         update_allowed_bearers(session);
1265         update_info(info);
1266         if (info->ecall == TRUE) {
1267                 ecall_session = session;
1268                 update_ecall_sessions(session);
1269         }
1270
1271         info_last->bearer = info->bearer;
1272         info_last->online = info->online;
1273         info_last->priority = info->priority;
1274         info_last->avoid_handover = info->avoid_handover;
1275         info_last->stay_connected = info->stay_connected;
1276         info_last->periodic_connect = info->periodic_connect;
1277         info_last->idle_timeout = info->idle_timeout;
1278         info_last->ecall = info->ecall;
1279         info_last->roaming_policy = info->roaming_policy;
1280         info_last->service = info->service;
1281         info_last->marker = info->marker;
1282         info_last->allowed_bearers = info->allowed_bearers;
1283         update_info(info_last);
1284
1285         session->info_dirty = TRUE;
1286         session->append_all = TRUE;
1287
1288         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1289
1290         return 0;
1291
1292 err:
1293         connman_error("Failed to create session");
1294         g_free(session_path);
1295
1296         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1297         g_slist_free(allowed_bearers);
1298
1299         return err;
1300 }
1301
1302 int __connman_session_destroy(DBusMessage *msg)
1303 {
1304         const char *owner, *session_path;
1305         struct connman_session *session;
1306
1307         owner = dbus_message_get_sender(msg);
1308
1309         DBG("owner %s", owner);
1310
1311         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1312                                                         DBUS_TYPE_INVALID);
1313         if (session_path == NULL)
1314                 return -EINVAL;
1315
1316         session = g_hash_table_lookup(session_hash, session_path);
1317         if (session == NULL)
1318                 return -EINVAL;
1319
1320         if (g_strcmp0(owner, session->owner) != 0)
1321                 return -EACCES;
1322
1323         session_disconnect(session);
1324
1325         return 0;
1326 }
1327
1328 connman_bool_t __connman_session_mode()
1329 {
1330         return sessionmode;
1331 }
1332
1333 void __connman_session_set_mode(connman_bool_t enable)
1334 {
1335         DBG("enable %d", enable);
1336
1337         if (sessionmode == enable)
1338                 return;
1339
1340         sessionmode = enable;
1341
1342         if (sessionmode == TRUE)
1343                 __connman_service_disconnect_all();
1344 }
1345
1346 static void service_add(struct connman_service *service)
1347 {
1348         GHashTableIter iter;
1349         gpointer key, value;
1350         struct connman_session *session;
1351
1352         DBG("service %p", service);
1353
1354         g_hash_table_iter_init(&iter, session_hash);
1355
1356         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1357                 session = value;
1358
1359                 if (service_match(session, service) == FALSE)
1360                         continue;
1361
1362                 g_sequence_insert_sorted(session->service_list, service,
1363                                                 sort_services, session);
1364
1365                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1366         }
1367 }
1368
1369 static int service_remove_from_session(struct connman_session *session,
1370                                         struct connman_service *service)
1371 {
1372         GSequenceIter *iter;
1373
1374         iter = lookup_service(session, service);
1375         if (iter == NULL)
1376                 return -ENOENT;
1377
1378         session->info.online = FALSE;
1379         g_sequence_remove(iter);
1380
1381         return 0;
1382 }
1383
1384 static void service_remove(struct connman_service *service)
1385 {
1386
1387         GHashTableIter iter;
1388         gpointer key, value;
1389         struct connman_session *session;
1390         struct session_info *info;
1391
1392         DBG("service %p", service);
1393
1394         g_hash_table_iter_init(&iter, session_hash);
1395
1396         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1397                 session = value;
1398                 info = &session->info;
1399
1400                 if (service_remove_from_session(session, service) != 0)
1401                         continue;
1402
1403                 info->service = NULL;
1404                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1405         }
1406 }
1407
1408 static void service_state_changed(struct connman_service *service,
1409                                         enum connman_service_state state)
1410 {
1411         GHashTableIter iter;
1412         gpointer key, value;
1413         struct connman_session *session;
1414         struct session_info *info;
1415         connman_bool_t online;
1416
1417         DBG("service %p state %d", service, state);
1418
1419         g_hash_table_iter_init(&iter, session_hash);
1420
1421         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1422                 session = value;
1423                 info = &session->info;
1424
1425                 if (info->service == service) {
1426                         online = __connman_service_is_connected(service);
1427                         if (info->online == online)
1428                                 continue;
1429
1430                         info->online = online;
1431                         session->info_dirty = TRUE;
1432                         session_changed(session,
1433                                         CONNMAN_SESSION_TRIGGER_SERVICE);
1434                 }
1435         }
1436 }
1437
1438 static void ipconfig_changed(struct connman_service *service,
1439                                 struct connman_ipconfig *ipconfig)
1440 {
1441         GHashTableIter iter;
1442         gpointer key, value;
1443         struct connman_session *session;
1444         struct session_info *info;
1445         enum connman_ipconfig_type type;
1446
1447         DBG("service %p ipconfig %p", service, ipconfig);
1448
1449         type = __connman_ipconfig_get_config_type(ipconfig);
1450
1451         g_hash_table_iter_init(&iter, session_hash);
1452
1453         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1454                 session = value;
1455                 info = &session->info;
1456
1457                 if (info->service == service) {
1458                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1459                                 ipconfig_ipv4_changed(session);
1460                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1461                                 ipconfig_ipv6_changed(session);
1462                 }
1463         }
1464 }
1465
1466 static struct connman_notifier session_notifier = {
1467         .name                   = "session",
1468         .service_add            = service_add,
1469         .service_remove         = service_remove,
1470         .service_state_changed  = service_state_changed,
1471         .ipconfig_changed       = ipconfig_changed,
1472 };
1473
1474 int __connman_session_init(void)
1475 {
1476         int err;
1477
1478         DBG("");
1479
1480         connection = connman_dbus_get_connection();
1481         if (connection == NULL)
1482                 return -1;
1483
1484         err = connman_notifier_register(&session_notifier);
1485         if (err < 0) {
1486                 dbus_connection_unref(connection);
1487                 return err;
1488         }
1489
1490         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1491                                                 NULL, cleanup_session);
1492
1493         sessionmode = FALSE;
1494         return 0;
1495 }
1496
1497 void __connman_session_cleanup(void)
1498 {
1499         DBG("");
1500
1501         if (connection == NULL)
1502                 return;
1503
1504         connman_notifier_unregister(&session_notifier);
1505
1506         g_hash_table_foreach(session_hash, release_session, NULL);
1507         g_hash_table_destroy(session_hash);
1508
1509         dbus_connection_unref(connection);
1510 }