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
 721                 idx = __connman_service_get_index(info->service);
 722                 info->ifname = connman_inet_ifname(idx);
 723                 if (info->ifname == NULL)
 724                         info->ifname = "";
 725         } else {
 726                 info->bearer = "";
 727                 info->online = FALSE;
 728                 info->name = "";
 729                 info->ifname = "";
 730         }
 731 }
 732
 733 static void notify_service_changes(struct connman_session *session)
 734 {
 735         struct session_info *info = &session->info;
 736         struct session_info *info_last = &session->info_last;
 737
 738         if (info->service == info_last->service)
 739                 return;
 740
 741         update_info(info);
 742         session->info_dirty = TRUE;
 743 }
 744
 745 static void select_and_connect(struct connman_session *session,
 746                                 connman_bool_t do_connect)
 747 {
 748         struct session_info *info = &session->info;
 749         struct connman_service *service = NULL;
 750         GSequenceIter *iter;
 751
 752         DBG("session %p connect %d", session, do_connect);
 753
 754         iter = g_sequence_get_begin_iter(session->service_list);
 755
 756         while (g_sequence_iter_is_end(iter) == FALSE) {
 757                 service = g_sequence_get(iter);
 758
 759                 if (__connman_service_is_connecting(service) == TRUE ||
 760                                 __connman_service_is_connected(service) == TRUE) {
 761                         break;
 762                 }
 763
 764                 if (__connman_service_is_idle(service) == TRUE &&
 765                                 do_connect == TRUE) {
 766                         break;
 767                 }
 768
 769                 service = NULL;
 770
 771                 iter = g_sequence_iter_next(iter);
 772         }
 773
 774         if (info->service != NULL && info->service != service) {
 775                 __connman_service_disconnect(info->service);
 776                 info->service = NULL;
 777         }
 778
 779         if (service != NULL) {
 780                 info->service = service;
 781
 782                 if (do_connect == TRUE)
 783                         __connman_service_connect(info->service);
 784         }
 785
 786         notify_service_changes(session);
 787 }
 788
 789 static void session_changed(struct connman_session *session,
 790                                 enum connman_session_trigger trigger)
 791 {
 792         struct session_info *info = &session->info;
 793         GSequenceIter *iter;
 794
 795         /*
 796          * TODO: This only a placeholder for the 'real' algorithm to
 797          * play a bit around. So we are going to improve it step by step.
 798          */
 799
 800         DBG("session %p trigger %s", session, trigger2string(trigger));
 801
 802         switch (trigger) {
 803         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 804                 DBG("ignore session changed event");
 805                 return;
 806         case CONNMAN_SESSION_TRIGGER_SETTING:
 807                 if (info->service != NULL) {
 808                         iter = lookup_service(session, info->service);
 809                         if (iter == NULL) {
 810                                 /*
 811                                  * This service is not part of this
 812                                  * session anymore.
 813                                  */
 814
 815                                 __connman_service_disconnect(info->service);
 816                                 info->service = NULL;
 817                         }
 818
 819                         notify_service_changes(session);
 820                 }
 821
 822                 /* Try to free ride */
 823                 if (info->online == FALSE)
 824                         select_and_connect(session, FALSE);
 825
 826                 break;
 827         case CONNMAN_SESSION_TRIGGER_CONNECT:
 828                 if (info->online == TRUE)
 829                         break;
 830
 831                 select_and_connect(session, TRUE);
 832
 833                 break;
 834         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 835                 if (info->online == FALSE)
 836                         break;
 837
 838                 if (info->service != NULL)
 839                         __connman_service_disconnect(info->service);
 840
 841                 info->service = NULL;
 842                 notify_service_changes(session);
 843
 844                 break;
 845         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 846                 select_and_connect(session, TRUE);
 847
 848                 break;
 849         case CONNMAN_SESSION_TRIGGER_SERVICE:
 850                 if (info->online == TRUE)
 851                         break;
 852
 853                 if (info->stay_connected == TRUE) {
 854                         DBG("StayConnected");
 855                         select_and_connect(session, TRUE);
 856
 857                         break;
 858                 }
 859
 860                 /* Try to free ride */
 861                 select_and_connect(session, FALSE);
 862
 863                 break;
 864         case CONNMAN_SESSION_TRIGGER_ECALL:
 865                 if (info->online == FALSE && info->service != NULL)
 866                         info->service = NULL;
 867
 868                 notify_service_changes(session);
 869
 870                 break;
 871         }
 872
 873         switch (trigger) {
 874         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 875                 break;
 876         case CONNMAN_SESSION_TRIGGER_CONNECT:
 877         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 878         case CONNMAN_SESSION_TRIGGER_ECALL:
 879                 g_timeout_add_seconds(0, session_notify, session);
 880                 break;
 881         case CONNMAN_SESSION_TRIGGER_SETTING:
 882         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 883         case CONNMAN_SESSION_TRIGGER_SERVICE:
 884                 session_notify(session);
 885                 break;
 886         }
 887 }
 888
 889 static DBusMessage *connect_session(DBusConnection *conn,
 890                                         DBusMessage *msg, void *user_data)
 891 {
 892         struct connman_session *session = user_data;
 893
 894         DBG("session %p", session);
 895
 896         if (ecall_session != NULL && ecall_session != session)
 897                 return __connman_error_failed(msg, EBUSY);
 898
 899         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 900
 901         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 902 }
 903
 904 static DBusMessage *disconnect_session(DBusConnection *conn,
 905                                         DBusMessage *msg, void *user_data)
 906 {
 907         struct connman_session *session = user_data;
 908
 909         DBG("session %p", session);
 910
 911         if (ecall_session != NULL && ecall_session != session)
 912                 return __connman_error_failed(msg, EBUSY);
 913
 914         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 915
 916         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 917 }
 918
 919 static void print_name(gpointer data, gpointer user_data)
 920 {
 921         struct connman_service *service = data;
 922
 923         DBG("service %p type %s name %s", service,
 924                 service2bearer(connman_service_get_type(service)),
 925                 __connman_service_get_name(service));
 926 }
 927
 928 static void update_allowed_bearers(struct connman_session *session)
 929 {
 930         if (session->service_list != NULL)
 931                 g_sequence_free(session->service_list);
 932
 933         session->service_list = __connman_service_get_list(session,
 934                                                                 service_match);
 935         g_sequence_sort(session->service_list, sort_services, session);
 936         g_sequence_foreach(session->service_list, print_name, NULL);
 937
 938         session->info_dirty = TRUE;
 939 }
 940
 941 static void update_ecall_sessions(struct connman_session *session)
 942 {
 943         struct session_info *info = &session->info;
 944         struct connman_session *session_iter;
 945         GHashTableIter iter;
 946         gpointer key, value;
 947
 948         g_hash_table_iter_init(&iter, session_hash);
 949
 950         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 951                 session_iter = value;
 952
 953                 if (session_iter == session)
 954                         continue;
 955
 956                 session_iter->info.ecall = info->ecall;
 957                 session_iter->info_dirty = TRUE;
 958
 959                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
 960         }
 961 }
 962
 963 static void update_ecall(struct connman_session *session)
 964 {
 965         struct session_info *info = &session->info;
 966         struct session_info *info_last = &session->info_last;
 967
 968         DBG("session %p ecall_session %p ecall %d -> %d", session,
 969                 ecall_session, info_last->ecall, info->ecall);
 970
 971         if (ecall_session == NULL) {
 972                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
 973                         goto err;
 974
 975                 ecall_session = session;
 976         } else if (ecall_session == session) {
 977                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
 978                         goto err;
 979
 980                 ecall_session = NULL;
 981         } else {
 982                 goto err;
 983         }
 984
 985         update_ecall_sessions(session);
 986
 987         session->info_dirty = TRUE;
 988         return;
 989
 990 err:
 991         /* not a valid transition */
 992         info->ecall = info_last->ecall;
 993 }
 994
 995 static DBusMessage *change_session(DBusConnection *conn,
 996                                         DBusMessage *msg, void *user_data)
 997 {
 998         struct connman_session *session = user_data;
 999         struct session_info *info = &session->info;
1000         struct session_info *info_last = &session->info_last;
1001         DBusMessageIter iter, value;
1002         const char *name;
1003         GSList *allowed_bearers;
1004
1005         DBG("session %p", session);
1006         if (dbus_message_iter_init(msg, &iter) == FALSE)
1007                 return __connman_error_invalid_arguments(msg);
1008
1009         dbus_message_iter_get_basic(&iter, &name);
1010         dbus_message_iter_next(&iter);
1011         dbus_message_iter_recurse(&iter, &value);
1012
1013         switch (dbus_message_iter_get_arg_type(&value)) {
1014         case DBUS_TYPE_ARRAY:
1015                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1016                         allowed_bearers = session_parse_allowed_bearers(&value);
1017
1018                         g_slist_foreach(info->allowed_bearers,
1019                                         cleanup_bearer_info, NULL);
1020                         g_slist_free(info->allowed_bearers);
1021
1022                         if (allowed_bearers == NULL) {
1023                                 allowed_bearers = session_allowed_bearers_any();
1024
1025                                 if (allowed_bearers == NULL)
1026                                         return __connman_error_failed(msg, ENOMEM);
1027                         }
1028
1029                         info->allowed_bearers = allowed_bearers;
1030
1031                         update_allowed_bearers(session);
1032                 } else {
1033                         goto err;
1034                 }
1035                 break;
1036         case DBUS_TYPE_BOOLEAN:
1037                 if (g_str_equal(name, "Priority") == TRUE) {
1038                         dbus_message_iter_get_basic(&value,
1039                                         &info->priority);
1040
1041                         if (info_last->priority != info->priority)
1042                                 session->info_dirty = TRUE;
1043                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1044                         dbus_message_iter_get_basic(&value,
1045                                         &info->avoid_handover);
1046
1047                         if (info_last->avoid_handover != info->avoid_handover)
1048                                 session->info_dirty = TRUE;
1049                         } else if (g_str_equal(name, "StayConnected") == TRUE) {
1050                         dbus_message_iter_get_basic(&value,
1051                                         &info->stay_connected);
1052
1053                         if (info_last->stay_connected != info->stay_connected)
1054                                 session->info_dirty = TRUE;
1055                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1056                         dbus_message_iter_get_basic(&value,
1057                                         &info->ecall);
1058
1059                         update_ecall(session);
1060                 } else {
1061                         goto err;
1062                 }
1063                 break;
1064         case DBUS_TYPE_UINT32:
1065                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1066                         dbus_message_iter_get_basic(&value,
1067                                         &info->periodic_connect);
1068
1069                         if (info_last->periodic_connect != info->periodic_connect)
1070                                 session->info_dirty = TRUE;
1071                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1072                         dbus_message_iter_get_basic(&value,
1073                                         &info->idle_timeout);
1074
1075                         if (info_last->idle_timeout != info->idle_timeout)
1076                                 session->info_dirty = TRUE;
1077                 } else {
1078                         goto err;
1079                 }
1080                 break;
1081         case DBUS_TYPE_STRING:
1082                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1083                         const char *val;
1084                         dbus_message_iter_get_basic(&value, &val);
1085                         info->roaming_policy =
1086                                         string2roamingpolicy(val);
1087
1088                         if (info_last->roaming_policy != info->roaming_policy)
1089                                 session->info_dirty = TRUE;
1090                 } else {
1091                         goto err;
1092                 }
1093                 break;
1094         default:
1095                 goto err;
1096         }
1097
1098         if (session->info_dirty == TRUE)
1099                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1100
1101         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1102
1103 err:
1104         return __connman_error_invalid_arguments(msg);
1105 }
1106
1107 static GDBusMethodTable session_methods[] = {
1108         { "Destroy",    "",   "", destroy_session    },
1109         { "Connect",    "",   "", connect_session    },
1110         { "Disconnect", "",   "", disconnect_session },
1111         { "Change",     "sv", "", change_session     },
1112         { },
1113 };
1114
1115 int __connman_session_create(DBusMessage *msg)
1116 {
1117         const char *owner, *notify_path;
1118         char *session_path = NULL;
1119         DBusMessageIter iter, array;
1120         struct connman_session *session;
1121         struct session_info *info, *info_last;
1122
1123         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1124         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1125         enum connman_session_roaming_policy roaming_policy =
1126                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1127         GSList *allowed_bearers = NULL;
1128         unsigned int periodic_connect = 0;
1129         unsigned int idle_timeout = 0;
1130
1131         int err;
1132
1133         owner = dbus_message_get_sender(msg);
1134
1135         DBG("owner %s", owner);
1136
1137         if (ecall_session != NULL) {
1138                 /*
1139                  * If there is an emergency call already going on,
1140                  * ignore session creation attempt
1141                  */
1142                 err = -EBUSY;
1143                 goto err;
1144         }
1145
1146         dbus_message_iter_init(msg, &iter);
1147         dbus_message_iter_recurse(&iter, &array);
1148
1149         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1150                 DBusMessageIter entry, value;
1151                 const char *key, *val;
1152
1153                 dbus_message_iter_recurse(&array, &entry);
1154                 dbus_message_iter_get_basic(&entry, &key);
1155
1156                 dbus_message_iter_next(&entry);
1157                 dbus_message_iter_recurse(&entry, &value);
1158
1159                 switch (dbus_message_iter_get_arg_type(&value)) {
1160                 case DBUS_TYPE_ARRAY:
1161                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1162                                 allowed_bearers =
1163                                         session_parse_allowed_bearers(&value);
1164                         } else {
1165                                 return -EINVAL;
1166                         }
1167                         break;
1168                 case DBUS_TYPE_BOOLEAN:
1169                         if (g_str_equal(key, "Priority") == TRUE) {
1170                                 dbus_message_iter_get_basic(&value,
1171                                                         &priority);
1172                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1173                                 dbus_message_iter_get_basic(&value,
1174                                                         &avoid_handover);
1175                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1176                                 dbus_message_iter_get_basic(&value,
1177                                                         &stay_connected);
1178                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1179                                 dbus_message_iter_get_basic(&value,
1180                                                         &ecall);
1181                         } else {
1182                                 return -EINVAL;
1183                         }
1184                         break;
1185                 case DBUS_TYPE_UINT32:
1186                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1187                                 dbus_message_iter_get_basic(&value,
1188                                                         &periodic_connect);
1189                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1190                                 dbus_message_iter_get_basic(&value,
1191                                                         &idle_timeout);
1192                         } else {
1193                                 return -EINVAL;
1194                         }
1195                         break;
1196                 case DBUS_TYPE_STRING:
1197                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1198                                 dbus_message_iter_get_basic(&value, &val);
1199                                 roaming_policy = string2roamingpolicy(val);
1200                         } else {
1201                                 return -EINVAL;
1202                         }
1203                 }
1204                 dbus_message_iter_next(&array);
1205         }
1206
1207         dbus_message_iter_next(&iter);
1208         dbus_message_iter_get_basic(&iter, &notify_path);
1209
1210         if (notify_path == NULL) {
1211                 err = -EINVAL;
1212                 goto err;
1213         }
1214
1215         session_path = g_strdup_printf("/sessions%s", notify_path);
1216         if (session_path == NULL) {
1217                 err = -ENOMEM;
1218                 goto err;
1219         }
1220
1221         session = g_hash_table_lookup(session_hash, session_path);
1222         if (session != NULL) {
1223                 err = -EEXIST;
1224                 goto err;
1225         }
1226
1227         session = g_try_new0(struct connman_session, 1);
1228         if (session == NULL) {
1229                 err = -ENOMEM;
1230                 goto err;
1231         }
1232
1233         info = &session->info;
1234         info_last = &session->info_last;
1235
1236         session->owner = g_strdup(owner);
1237         session->session_path = session_path;
1238         session->notify_path = g_strdup(notify_path);
1239         session->notify_watch =
1240                 g_dbus_add_disconnect_watch(connection, session->owner,
1241                                         owner_disconnect, session, NULL);
1242
1243         info->bearer = "";
1244         info->online = FALSE;
1245         info->priority = priority;
1246         info->avoid_handover = avoid_handover;
1247         info->stay_connected = stay_connected;
1248         info->periodic_connect = periodic_connect;
1249         info->idle_timeout = idle_timeout;
1250         info->ecall = ecall;
1251         info->roaming_policy = roaming_policy;
1252         info->service = NULL;
1253         info->marker = 0;
1254
1255         if (allowed_bearers == NULL) {
1256                 info->allowed_bearers =
1257                                 session_allowed_bearers_any();
1258
1259                 if (info->allowed_bearers == NULL) {
1260                         err = -ENOMEM;
1261                         goto err;
1262                 }
1263         } else {
1264                 info->allowed_bearers = allowed_bearers;
1265         }
1266
1267         g_hash_table_replace(session_hash, session->session_path, session);
1268
1269         DBG("add %s", session->session_path);
1270
1271         if (g_dbus_register_interface(connection, session->session_path,
1272                                         CONNMAN_SESSION_INTERFACE,
1273                                         session_methods, NULL,
1274                                         NULL, session, NULL) == FALSE) {
1275                 connman_error("Failed to register %s", session->session_path);
1276                 g_hash_table_remove(session_hash, session->session_path);
1277                 session = NULL;
1278
1279                 err = -EINVAL;
1280                 goto err;
1281         }
1282
1283         g_dbus_send_reply(connection, msg,
1284                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1285                                 DBUS_TYPE_INVALID);
1286
1287
1288         update_allowed_bearers(session);
1289         update_info(info);
1290         if (info->ecall == TRUE) {
1291                 ecall_session = session;
1292                 update_ecall_sessions(session);
1293         }
1294
1295         info_last->bearer = info->bearer;
1296         info_last->online = info->online;
1297         info_last->priority = info->priority;
1298         info_last->avoid_handover = info->avoid_handover;
1299         info_last->stay_connected = info->stay_connected;
1300         info_last->periodic_connect = info->periodic_connect;
1301         info_last->idle_timeout = info->idle_timeout;
1302         info_last->ecall = info->ecall;
1303         info_last->roaming_policy = info->roaming_policy;
1304         info_last->service = info->service;
1305         info_last->marker = info->marker;
1306         info_last->allowed_bearers = info->allowed_bearers;
1307         update_info(info_last);
1308
1309         session->info_dirty = TRUE;
1310         session->append_all = TRUE;
1311
1312         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1313
1314         return 0;
1315
1316 err:
1317         connman_error("Failed to create session");
1318         g_free(session_path);
1319
1320         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1321         g_slist_free(allowed_bearers);
1322
1323         return err;
1324 }
1325
1326 int __connman_session_destroy(DBusMessage *msg)
1327 {
1328         const char *owner, *session_path;
1329         struct connman_session *session;
1330
1331         owner = dbus_message_get_sender(msg);
1332
1333         DBG("owner %s", owner);
1334
1335         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1336                                                         DBUS_TYPE_INVALID);
1337         if (session_path == NULL)
1338                 return -EINVAL;
1339
1340         session = g_hash_table_lookup(session_hash, session_path);
1341         if (session == NULL)
1342                 return -EINVAL;
1343
1344         if (g_strcmp0(owner, session->owner) != 0)
1345                 return -EACCES;
1346
1347         session_disconnect(session);
1348
1349         return 0;
1350 }
1351
1352 connman_bool_t __connman_session_mode()
1353 {
1354         return sessionmode;
1355 }
1356
1357 void __connman_session_set_mode(connman_bool_t enable)
1358 {
1359         DBG("enable %d", enable);
1360
1361         if (sessionmode == enable)
1362                 return;
1363
1364         sessionmode = enable;
1365
1366         if (sessionmode == TRUE)
1367                 __connman_service_disconnect_all();
1368 }
1369
1370 static void service_add(struct connman_service *service)
1371 {
1372         GHashTableIter iter;
1373         gpointer key, value;
1374         struct connman_session *session;
1375
1376         DBG("service %p", service);
1377
1378         g_hash_table_iter_init(&iter, session_hash);
1379
1380         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1381                 session = value;
1382
1383                 if (service_match(session, service) == FALSE)
1384                         continue;
1385
1386                 g_sequence_insert_sorted(session->service_list, service,
1387                                                 sort_services, session);
1388
1389                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1390         }
1391 }
1392
1393 static int service_remove_from_session(struct connman_session *session,
1394                                         struct connman_service *service)
1395 {
1396         GSequenceIter *iter;
1397
1398         iter = lookup_service(session, service);
1399         if (iter == NULL)
1400                 return -ENOENT;
1401
1402         session->info.online = FALSE;
1403         g_sequence_remove(iter);
1404
1405         return 0;
1406 }
1407
1408 static void service_remove(struct connman_service *service)
1409 {
1410
1411         GHashTableIter iter;
1412         gpointer key, value;
1413         struct connman_session *session;
1414         struct session_info *info;
1415
1416         DBG("service %p", service);
1417
1418         g_hash_table_iter_init(&iter, session_hash);
1419
1420         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1421                 session = value;
1422                 info = &session->info;
1423
1424                 if (service_remove_from_session(session, service) != 0)
1425                         continue;
1426
1427                 info->service = NULL;
1428                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1429         }
1430 }
1431
1432 static void service_state_changed(struct connman_service *service,
1433                                         enum connman_service_state state)
1434 {
1435         GHashTableIter iter;
1436         gpointer key, value;
1437         struct connman_session *session;
1438         struct session_info *info;
1439         connman_bool_t online;
1440
1441         DBG("service %p state %d", service, state);
1442
1443         g_hash_table_iter_init(&iter, session_hash);
1444
1445         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1446                 session = value;
1447                 info = &session->info;
1448
1449                 if (info->service == service) {
1450                         online = __connman_service_is_connected(service);
1451                         if (info->online == online)
1452                                 continue;
1453
1454                         info->online = online;
1455                         session->info_dirty = TRUE;
1456                         session_changed(session,
1457                                         CONNMAN_SESSION_TRIGGER_SERVICE);
1458                 }
1459         }
1460 }
1461
1462 static void ipconfig_changed(struct connman_service *service,
1463                                 struct connman_ipconfig *ipconfig)
1464 {
1465         GHashTableIter iter;
1466         gpointer key, value;
1467         struct connman_session *session;
1468         struct session_info *info;
1469         enum connman_ipconfig_type type;
1470
1471         DBG("service %p ipconfig %p", service, ipconfig);
1472
1473         type = __connman_ipconfig_get_config_type(ipconfig);
1474
1475         g_hash_table_iter_init(&iter, session_hash);
1476
1477         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1478                 session = value;
1479                 info = &session->info;
1480
1481                 if (info->service == service) {
1482                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1483                                 ipconfig_ipv4_changed(session);
1484                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1485                                 ipconfig_ipv6_changed(session);
1486                 }
1487         }
1488 }
1489
1490 static struct connman_notifier session_notifier = {
1491         .name                   = "session",
1492         .service_add            = service_add,
1493         .service_remove         = service_remove,
1494         .service_state_changed  = service_state_changed,
1495         .ipconfig_changed       = ipconfig_changed,
1496 };
1497
1498 int __connman_session_init(void)
1499 {
1500         int err;
1501
1502         DBG("");
1503
1504         connection = connman_dbus_get_connection();
1505         if (connection == NULL)
1506                 return -1;
1507
1508         err = connman_notifier_register(&session_notifier);
1509         if (err < 0) {
1510                 dbus_connection_unref(connection);
1511                 return err;
1512         }
1513
1514         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1515                                                 NULL, cleanup_session);
1516
1517         sessionmode = FALSE;
1518         return 0;
1519 }
1520
1521 void __connman_session_cleanup(void)
1522 {
1523         DBG("");
1524
1525         if (connection == NULL)
1526                 return;
1527
1528         connman_notifier_unregister(&session_notifier);
1529
1530         g_hash_table_foreach(session_hash, release_session, NULL);
1531         g_hash_table_destroy(session_hash);
1532
1533         dbus_connection_unref(connection);
1534 }