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 notify_service_changes(struct connman_session *session)
 736 {
 737         struct session_info *info = &session->info;
 738         struct session_info *info_last = &session->info_last;
 739
 740         if (info->service == info_last->service)
 741                 return;
 742
 743         update_info(info);
 744         session->info_dirty = TRUE;
 745 }
 746
 747 static void select_and_connect(struct connman_session *session,
 748                                 connman_bool_t do_connect)
 749 {
 750         struct session_info *info = &session->info;
 751         struct connman_service *service = NULL;
 752         GSequenceIter *iter;
 753
 754         DBG("session %p connect %d", session, do_connect);
 755
 756         iter = g_sequence_get_begin_iter(session->service_list);
 757
 758         while (g_sequence_iter_is_end(iter) == FALSE) {
 759                 service = g_sequence_get(iter);
 760
 761                 if (__connman_service_is_connecting(service) == TRUE ||
 762                                 __connman_service_is_connected(service) == TRUE) {
 763                         break;
 764                 }
 765
 766                 if (__connman_service_is_idle(service) == TRUE &&
 767                                 do_connect == TRUE) {
 768                         break;
 769                 }
 770
 771                 service = NULL;
 772
 773                 iter = g_sequence_iter_next(iter);
 774         }
 775
 776         if (info->service != NULL && info->service != service) {
 777                 __connman_service_disconnect(info->service);
 778                 info->service = NULL;
 779         }
 780
 781         if (service != NULL) {
 782                 info->service = service;
 783
 784                 if (do_connect == TRUE)
 785                         __connman_service_connect(info->service);
 786         }
 787
 788         notify_service_changes(session);
 789 }
 790
 791 static void session_changed(struct connman_session *session,
 792                                 enum connman_session_trigger trigger)
 793 {
 794         struct session_info *info = &session->info;
 795         GSequenceIter *iter;
 796
 797         /*
 798          * TODO: This only a placeholder for the 'real' algorithm to
 799          * play a bit around. So we are going to improve it step by step.
 800          */
 801
 802         DBG("session %p trigger %s", session, trigger2string(trigger));
 803
 804         switch (trigger) {
 805         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 806                 DBG("ignore session changed event");
 807                 return;
 808         case CONNMAN_SESSION_TRIGGER_SETTING:
 809                 if (info->service != NULL) {
 810                         iter = lookup_service(session, info->service);
 811                         if (iter == NULL) {
 812                                 /*
 813                                  * This service is not part of this
 814                                  * session anymore.
 815                                  */
 816
 817                                 __connman_service_disconnect(info->service);
 818                                 info->service = NULL;
 819                         }
 820
 821                         notify_service_changes(session);
 822                 }
 823
 824                 /* Try to free ride */
 825                 if (info->online == FALSE)
 826                         select_and_connect(session, FALSE);
 827
 828                 break;
 829         case CONNMAN_SESSION_TRIGGER_CONNECT:
 830                 if (info->online == TRUE)
 831                         break;
 832
 833                 select_and_connect(session, TRUE);
 834
 835                 break;
 836         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 837                 if (info->online == FALSE)
 838                         break;
 839
 840                 if (info->service != NULL)
 841                         __connman_service_disconnect(info->service);
 842
 843                 info->service = NULL;
 844                 notify_service_changes(session);
 845
 846                 break;
 847         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 848                 select_and_connect(session, TRUE);
 849
 850                 break;
 851         case CONNMAN_SESSION_TRIGGER_SERVICE:
 852                 if (info->online == TRUE)
 853                         break;
 854
 855                 if (info->stay_connected == TRUE) {
 856                         DBG("StayConnected");
 857                         select_and_connect(session, TRUE);
 858
 859                         break;
 860                 }
 861
 862                 /* Try to free ride */
 863                 select_and_connect(session, FALSE);
 864
 865                 break;
 866         case CONNMAN_SESSION_TRIGGER_ECALL:
 867                 if (info->online == FALSE && info->service != NULL)
 868                         info->service = NULL;
 869
 870                 notify_service_changes(session);
 871
 872                 break;
 873         }
 874
 875         switch (trigger) {
 876         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 877                 break;
 878         case CONNMAN_SESSION_TRIGGER_CONNECT:
 879         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 880         case CONNMAN_SESSION_TRIGGER_ECALL:
 881                 g_timeout_add_seconds(0, session_notify, session);
 882                 break;
 883         case CONNMAN_SESSION_TRIGGER_SETTING:
 884         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 885         case CONNMAN_SESSION_TRIGGER_SERVICE:
 886                 session_notify(session);
 887                 break;
 888         }
 889 }
 890
 891 static DBusMessage *connect_session(DBusConnection *conn,
 892                                         DBusMessage *msg, void *user_data)
 893 {
 894         struct connman_session *session = user_data;
 895
 896         DBG("session %p", session);
 897
 898         if (ecall_session != NULL && ecall_session != session)
 899                 return __connman_error_failed(msg, EBUSY);
 900
 901         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 902
 903         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 904 }
 905
 906 static DBusMessage *disconnect_session(DBusConnection *conn,
 907                                         DBusMessage *msg, void *user_data)
 908 {
 909         struct connman_session *session = user_data;
 910
 911         DBG("session %p", session);
 912
 913         if (ecall_session != NULL && ecall_session != session)
 914                 return __connman_error_failed(msg, EBUSY);
 915
 916         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 917
 918         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 919 }
 920
 921 static void print_name(gpointer data, gpointer user_data)
 922 {
 923         struct connman_service *service = data;
 924
 925         DBG("service %p type %s name %s", service,
 926                 service2bearer(connman_service_get_type(service)),
 927                 __connman_service_get_name(service));
 928 }
 929
 930 static void update_allowed_bearers(struct connman_session *session)
 931 {
 932         if (session->service_list != NULL)
 933                 g_sequence_free(session->service_list);
 934
 935         session->service_list = __connman_service_get_list(session,
 936                                                                 service_match);
 937         g_sequence_sort(session->service_list, sort_services, session);
 938         g_sequence_foreach(session->service_list, print_name, NULL);
 939
 940         session->info_dirty = TRUE;
 941 }
 942
 943 static void update_ecall_sessions(struct connman_session *session)
 944 {
 945         struct session_info *info = &session->info;
 946         struct connman_session *session_iter;
 947         GHashTableIter iter;
 948         gpointer key, value;
 949
 950         g_hash_table_iter_init(&iter, session_hash);
 951
 952         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 953                 session_iter = value;
 954
 955                 if (session_iter == session)
 956                         continue;
 957
 958                 session_iter->info.ecall = info->ecall;
 959                 session_iter->info_dirty = TRUE;
 960
 961                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
 962         }
 963 }
 964
 965 static void update_ecall(struct connman_session *session)
 966 {
 967         struct session_info *info = &session->info;
 968         struct session_info *info_last = &session->info_last;
 969
 970         DBG("session %p ecall_session %p ecall %d -> %d", session,
 971                 ecall_session, info_last->ecall, info->ecall);
 972
 973         if (ecall_session == NULL) {
 974                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
 975                         goto err;
 976
 977                 ecall_session = session;
 978         } else if (ecall_session == session) {
 979                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
 980                         goto err;
 981
 982                 ecall_session = NULL;
 983         } else {
 984                 goto err;
 985         }
 986
 987         update_ecall_sessions(session);
 988
 989         session->info_dirty = TRUE;
 990         return;
 991
 992 err:
 993         /* not a valid transition */
 994         info->ecall = info_last->ecall;
 995 }
 996
 997 static DBusMessage *change_session(DBusConnection *conn,
 998                                         DBusMessage *msg, void *user_data)
 999 {
1000         struct connman_session *session = user_data;
1001         struct session_info *info = &session->info;
1002         struct session_info *info_last = &session->info_last;
1003         DBusMessageIter iter, value;
1004         const char *name;
1005         GSList *allowed_bearers;
1006
1007         DBG("session %p", session);
1008         if (dbus_message_iter_init(msg, &iter) == FALSE)
1009                 return __connman_error_invalid_arguments(msg);
1010
1011         dbus_message_iter_get_basic(&iter, &name);
1012         dbus_message_iter_next(&iter);
1013         dbus_message_iter_recurse(&iter, &value);
1014
1015         switch (dbus_message_iter_get_arg_type(&value)) {
1016         case DBUS_TYPE_ARRAY:
1017                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1018                         allowed_bearers = session_parse_allowed_bearers(&value);
1019
1020                         g_slist_foreach(info->allowed_bearers,
1021                                         cleanup_bearer_info, NULL);
1022                         g_slist_free(info->allowed_bearers);
1023
1024                         if (allowed_bearers == NULL) {
1025                                 allowed_bearers = session_allowed_bearers_any();
1026
1027                                 if (allowed_bearers == NULL)
1028                                         return __connman_error_failed(msg, ENOMEM);
1029                         }
1030
1031                         info->allowed_bearers = allowed_bearers;
1032
1033                         update_allowed_bearers(session);
1034                 } else {
1035                         goto err;
1036                 }
1037                 break;
1038         case DBUS_TYPE_BOOLEAN:
1039                 if (g_str_equal(name, "Priority") == TRUE) {
1040                         dbus_message_iter_get_basic(&value,
1041                                         &info->priority);
1042
1043                         if (info_last->priority != info->priority)
1044                                 session->info_dirty = TRUE;
1045                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1046                         dbus_message_iter_get_basic(&value,
1047                                         &info->avoid_handover);
1048
1049                         if (info_last->avoid_handover != info->avoid_handover)
1050                                 session->info_dirty = TRUE;
1051                         } else if (g_str_equal(name, "StayConnected") == TRUE) {
1052                         dbus_message_iter_get_basic(&value,
1053                                         &info->stay_connected);
1054
1055                         if (info_last->stay_connected != info->stay_connected)
1056                                 session->info_dirty = TRUE;
1057                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1058                         dbus_message_iter_get_basic(&value,
1059                                         &info->ecall);
1060
1061                         update_ecall(session);
1062                 } else {
1063                         goto err;
1064                 }
1065                 break;
1066         case DBUS_TYPE_UINT32:
1067                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1068                         dbus_message_iter_get_basic(&value,
1069                                         &info->periodic_connect);
1070
1071                         if (info_last->periodic_connect != info->periodic_connect)
1072                                 session->info_dirty = TRUE;
1073                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1074                         dbus_message_iter_get_basic(&value,
1075                                         &info->idle_timeout);
1076
1077                         if (info_last->idle_timeout != info->idle_timeout)
1078                                 session->info_dirty = TRUE;
1079                 } else {
1080                         goto err;
1081                 }
1082                 break;
1083         case DBUS_TYPE_STRING:
1084                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1085                         const char *val;
1086                         dbus_message_iter_get_basic(&value, &val);
1087                         info->roaming_policy =
1088                                         string2roamingpolicy(val);
1089
1090                         if (info_last->roaming_policy != info->roaming_policy)
1091                                 session->info_dirty = TRUE;
1092                 } else {
1093                         goto err;
1094                 }
1095                 break;
1096         default:
1097                 goto err;
1098         }
1099
1100         if (session->info_dirty == TRUE)
1101                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1102
1103         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1104
1105 err:
1106         return __connman_error_invalid_arguments(msg);
1107 }
1108
1109 static GDBusMethodTable session_methods[] = {
1110         { "Destroy",    "",   "", destroy_session    },
1111         { "Connect",    "",   "", connect_session    },
1112         { "Disconnect", "",   "", disconnect_session },
1113         { "Change",     "sv", "", change_session     },
1114         { },
1115 };
1116
1117 int __connman_session_create(DBusMessage *msg)
1118 {
1119         const char *owner, *notify_path;
1120         char *session_path = NULL;
1121         DBusMessageIter iter, array;
1122         struct connman_session *session;
1123         struct session_info *info, *info_last;
1124
1125         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1126         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1127         enum connman_session_roaming_policy roaming_policy =
1128                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1129         GSList *allowed_bearers = NULL;
1130         unsigned int periodic_connect = 0;
1131         unsigned int idle_timeout = 0;
1132
1133         int err;
1134
1135         owner = dbus_message_get_sender(msg);
1136
1137         DBG("owner %s", owner);
1138
1139         if (ecall_session != NULL) {
1140                 /*
1141                  * If there is an emergency call already going on,
1142                  * ignore session creation attempt
1143                  */
1144                 err = -EBUSY;
1145                 goto err;
1146         }
1147
1148         dbus_message_iter_init(msg, &iter);
1149         dbus_message_iter_recurse(&iter, &array);
1150
1151         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1152                 DBusMessageIter entry, value;
1153                 const char *key, *val;
1154
1155                 dbus_message_iter_recurse(&array, &entry);
1156                 dbus_message_iter_get_basic(&entry, &key);
1157
1158                 dbus_message_iter_next(&entry);
1159                 dbus_message_iter_recurse(&entry, &value);
1160
1161                 switch (dbus_message_iter_get_arg_type(&value)) {
1162                 case DBUS_TYPE_ARRAY:
1163                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1164                                 allowed_bearers =
1165                                         session_parse_allowed_bearers(&value);
1166                         } else {
1167                                 return -EINVAL;
1168                         }
1169                         break;
1170                 case DBUS_TYPE_BOOLEAN:
1171                         if (g_str_equal(key, "Priority") == TRUE) {
1172                                 dbus_message_iter_get_basic(&value,
1173                                                         &priority);
1174                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1175                                 dbus_message_iter_get_basic(&value,
1176                                                         &avoid_handover);
1177                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1178                                 dbus_message_iter_get_basic(&value,
1179                                                         &stay_connected);
1180                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1181                                 dbus_message_iter_get_basic(&value,
1182                                                         &ecall);
1183                         } else {
1184                                 return -EINVAL;
1185                         }
1186                         break;
1187                 case DBUS_TYPE_UINT32:
1188                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1189                                 dbus_message_iter_get_basic(&value,
1190                                                         &periodic_connect);
1191                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1192                                 dbus_message_iter_get_basic(&value,
1193                                                         &idle_timeout);
1194                         } else {
1195                                 return -EINVAL;
1196                         }
1197                         break;
1198                 case DBUS_TYPE_STRING:
1199                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1200                                 dbus_message_iter_get_basic(&value, &val);
1201                                 roaming_policy = string2roamingpolicy(val);
1202                         } else {
1203                                 return -EINVAL;
1204                         }
1205                 }
1206                 dbus_message_iter_next(&array);
1207         }
1208
1209         dbus_message_iter_next(&iter);
1210         dbus_message_iter_get_basic(&iter, &notify_path);
1211
1212         if (notify_path == NULL) {
1213                 err = -EINVAL;
1214                 goto err;
1215         }
1216
1217         session_path = g_strdup_printf("/sessions%s", notify_path);
1218         if (session_path == NULL) {
1219                 err = -ENOMEM;
1220                 goto err;
1221         }
1222
1223         session = g_hash_table_lookup(session_hash, session_path);
1224         if (session != NULL) {
1225                 err = -EEXIST;
1226                 goto err;
1227         }
1228
1229         session = g_try_new0(struct connman_session, 1);
1230         if (session == NULL) {
1231                 err = -ENOMEM;
1232                 goto err;
1233         }
1234
1235         info = &session->info;
1236         info_last = &session->info_last;
1237
1238         session->owner = g_strdup(owner);
1239         session->session_path = session_path;
1240         session->notify_path = g_strdup(notify_path);
1241         session->notify_watch =
1242                 g_dbus_add_disconnect_watch(connection, session->owner,
1243                                         owner_disconnect, session, NULL);
1244
1245         info->bearer = "";
1246         info->online = FALSE;
1247         info->priority = priority;
1248         info->avoid_handover = avoid_handover;
1249         info->stay_connected = stay_connected;
1250         info->periodic_connect = periodic_connect;
1251         info->idle_timeout = idle_timeout;
1252         info->ecall = ecall;
1253         info->roaming_policy = roaming_policy;
1254         info->service = NULL;
1255         info->marker = 0;
1256
1257         if (allowed_bearers == NULL) {
1258                 info->allowed_bearers =
1259                                 session_allowed_bearers_any();
1260
1261                 if (info->allowed_bearers == NULL) {
1262                         err = -ENOMEM;
1263                         goto err;
1264                 }
1265         } else {
1266                 info->allowed_bearers = allowed_bearers;
1267         }
1268
1269         g_hash_table_replace(session_hash, session->session_path, session);
1270
1271         DBG("add %s", session->session_path);
1272
1273         if (g_dbus_register_interface(connection, session->session_path,
1274                                         CONNMAN_SESSION_INTERFACE,
1275                                         session_methods, NULL,
1276                                         NULL, session, NULL) == FALSE) {
1277                 connman_error("Failed to register %s", session->session_path);
1278                 g_hash_table_remove(session_hash, session->session_path);
1279                 session = NULL;
1280
1281                 err = -EINVAL;
1282                 goto err;
1283         }
1284
1285         g_dbus_send_reply(connection, msg,
1286                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1287                                 DBUS_TYPE_INVALID);
1288
1289
1290         update_allowed_bearers(session);
1291         update_info(info);
1292         if (info->ecall == TRUE) {
1293                 ecall_session = session;
1294                 update_ecall_sessions(session);
1295         }
1296
1297         info_last->bearer = info->bearer;
1298         info_last->online = info->online;
1299         info_last->priority = info->priority;
1300         info_last->avoid_handover = info->avoid_handover;
1301         info_last->stay_connected = info->stay_connected;
1302         info_last->periodic_connect = info->periodic_connect;
1303         info_last->idle_timeout = info->idle_timeout;
1304         info_last->ecall = info->ecall;
1305         info_last->roaming_policy = info->roaming_policy;
1306         info_last->service = info->service;
1307         info_last->marker = info->marker;
1308         info_last->allowed_bearers = info->allowed_bearers;
1309         update_info(info_last);
1310
1311         session->info_dirty = TRUE;
1312         session->append_all = TRUE;
1313
1314         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1315
1316         return 0;
1317
1318 err:
1319         connman_error("Failed to create session");
1320         g_free(session_path);
1321
1322         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1323         g_slist_free(allowed_bearers);
1324
1325         return err;
1326 }
1327
1328 int __connman_session_destroy(DBusMessage *msg)
1329 {
1330         const char *owner, *session_path;
1331         struct connman_session *session;
1332
1333         owner = dbus_message_get_sender(msg);
1334
1335         DBG("owner %s", owner);
1336
1337         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1338                                                         DBUS_TYPE_INVALID);
1339         if (session_path == NULL)
1340                 return -EINVAL;
1341
1342         session = g_hash_table_lookup(session_hash, session_path);
1343         if (session == NULL)
1344                 return -EINVAL;
1345
1346         if (g_strcmp0(owner, session->owner) != 0)
1347                 return -EACCES;
1348
1349         session_disconnect(session);
1350
1351         return 0;
1352 }
1353
1354 connman_bool_t __connman_session_mode()
1355 {
1356         return sessionmode;
1357 }
1358
1359 void __connman_session_set_mode(connman_bool_t enable)
1360 {
1361         DBG("enable %d", enable);
1362
1363         if (sessionmode == enable)
1364                 return;
1365
1366         sessionmode = enable;
1367
1368         if (sessionmode == TRUE)
1369                 __connman_service_disconnect_all();
1370 }
1371
1372 static void service_add(struct connman_service *service)
1373 {
1374         GHashTableIter iter;
1375         gpointer key, value;
1376         struct connman_session *session;
1377
1378         DBG("service %p", service);
1379
1380         g_hash_table_iter_init(&iter, session_hash);
1381
1382         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1383                 session = value;
1384
1385                 if (service_match(session, service) == FALSE)
1386                         continue;
1387
1388                 g_sequence_insert_sorted(session->service_list, service,
1389                                                 sort_services, session);
1390
1391                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1392         }
1393 }
1394
1395 static int service_remove_from_session(struct connman_session *session,
1396                                         struct connman_service *service)
1397 {
1398         GSequenceIter *iter;
1399
1400         iter = lookup_service(session, service);
1401         if (iter == NULL)
1402                 return -ENOENT;
1403
1404         session->info.online = FALSE;
1405         g_sequence_remove(iter);
1406
1407         return 0;
1408 }
1409
1410 static void service_remove(struct connman_service *service)
1411 {
1412
1413         GHashTableIter iter;
1414         gpointer key, value;
1415         struct connman_session *session;
1416         struct session_info *info;
1417
1418         DBG("service %p", service);
1419
1420         g_hash_table_iter_init(&iter, session_hash);
1421
1422         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1423                 session = value;
1424                 info = &session->info;
1425
1426                 if (service_remove_from_session(session, service) != 0)
1427                         continue;
1428
1429                 info->service = NULL;
1430                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1431         }
1432 }
1433
1434 static void service_state_changed(struct connman_service *service,
1435                                         enum connman_service_state state)
1436 {
1437         GHashTableIter iter;
1438         gpointer key, value;
1439         struct connman_session *session;
1440         struct session_info *info;
1441         connman_bool_t online;
1442
1443         DBG("service %p state %d", service, state);
1444
1445         g_hash_table_iter_init(&iter, session_hash);
1446
1447         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1448                 session = value;
1449                 info = &session->info;
1450
1451                 if (info->service == service) {
1452                         online = __connman_service_is_connected(service);
1453                         if (info->online == online)
1454                                 continue;
1455
1456                         info->online = online;
1457                         session->info_dirty = TRUE;
1458                         session_changed(session,
1459                                         CONNMAN_SESSION_TRIGGER_SERVICE);
1460                 }
1461         }
1462 }
1463
1464 static void ipconfig_changed(struct connman_service *service,
1465                                 struct connman_ipconfig *ipconfig)
1466 {
1467         GHashTableIter iter;
1468         gpointer key, value;
1469         struct connman_session *session;
1470         struct session_info *info;
1471         enum connman_ipconfig_type type;
1472
1473         DBG("service %p ipconfig %p", service, ipconfig);
1474
1475         type = __connman_ipconfig_get_config_type(ipconfig);
1476
1477         g_hash_table_iter_init(&iter, session_hash);
1478
1479         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1480                 session = value;
1481                 info = &session->info;
1482
1483                 if (info->service == service) {
1484                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1485                                 ipconfig_ipv4_changed(session);
1486                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1487                                 ipconfig_ipv6_changed(session);
1488                 }
1489         }
1490 }
1491
1492 static struct connman_notifier session_notifier = {
1493         .name                   = "session",
1494         .service_add            = service_add,
1495         .service_remove         = service_remove,
1496         .service_state_changed  = service_state_changed,
1497         .ipconfig_changed       = ipconfig_changed,
1498 };
1499
1500 int __connman_session_init(void)
1501 {
1502         int err;
1503
1504         DBG("");
1505
1506         connection = connman_dbus_get_connection();
1507         if (connection == NULL)
1508                 return -1;
1509
1510         err = connman_notifier_register(&session_notifier);
1511         if (err < 0) {
1512                 dbus_connection_unref(connection);
1513                 return err;
1514         }
1515
1516         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1517                                                 NULL, cleanup_session);
1518
1519         sessionmode = FALSE;
1520         return 0;
1521 }
1522
1523 void __connman_session_cleanup(void)
1524 {
1525         DBG("");
1526
1527         if (connection == NULL)
1528                 return;
1529
1530         connman_notifier_unregister(&session_notifier);
1531
1532         g_hash_table_foreach(session_hash, release_session, NULL);
1533         g_hash_table_destroy(session_hash);
1534
1535         dbus_connection_unref(connection);
1536 }