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 <errno.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34 static GHashTable *session_hash;
  35 static connman_bool_t sessionmode;
  36 static struct connman_session *ecall_session;
  37
  38 enum connman_session_trigger {
  39         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  40         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  41         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  42         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  43         CONNMAN_SESSION_TRIGGER_PERIODIC        = 4,
  44         CONNMAN_SESSION_TRIGGER_SERVICE         = 5,
  45         CONNMAN_SESSION_TRIGGER_ECALL           = 6,
  46 };
  47
  48 enum connman_session_reason {
  49         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  50         CONNMAN_SESSION_REASON_CONNECT          = 1,
  51         CONNMAN_SESSION_REASON_FREE_RIDE        = 2,
  52         CONNMAN_SESSION_REASON_PERIODIC         = 3,
  53 };
  54
  55 enum connman_session_roaming_policy {
  56         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  57         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  58         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  59         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  60         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  61         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  62 };
  63
  64 struct service_entry {
  65         /* track why this service was selected */
  66         enum connman_session_reason reason;
  67         enum connman_service_state state;
  68         const char *name;
  69         struct connman_service *service;
  70         const char *ifname;
  71         const char *bearer;
  72 };
  73
  74 struct session_info {
  75         connman_bool_t online;
  76         connman_bool_t priority;
  77         GSList *allowed_bearers;
  78         connman_bool_t avoid_handover;
  79         connman_bool_t stay_connected;
  80         unsigned int periodic_connect;
  81         unsigned int idle_timeout;
  82         connman_bool_t ecall;
  83         enum connman_session_roaming_policy roaming_policy;
  84         unsigned int marker;
  85
  86         struct service_entry *entry;
  87 };
  88
  89 struct connman_session {
  90         char *owner;
  91         char *session_path;
  92         char *notify_path;
  93         guint notify_watch;
  94
  95         connman_bool_t append_all;
  96         connman_bool_t info_dirty;
  97         struct session_info *info;
  98         struct session_info *info_last;
  99
 100         GSequence *service_list;
 101         GHashTable *service_hash;
 102 };
 103
 104 struct bearer_info {
 105         char *name;
 106         connman_bool_t match_all;
 107         enum connman_service_type service_type;
 108 };
 109
 110 static const char *trigger2string(enum connman_session_trigger trigger)
 111 {
 112         switch (trigger) {
 113         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 114                 break;
 115         case CONNMAN_SESSION_TRIGGER_SETTING:
 116                 return "setting";
 117         case CONNMAN_SESSION_TRIGGER_CONNECT:
 118                 return "connect";
 119         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 120                 return "disconnect";
 121         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 122                 return "periodic";
 123         case CONNMAN_SESSION_TRIGGER_SERVICE:
 124                 return "service";
 125         case CONNMAN_SESSION_TRIGGER_ECALL:
 126                 return "ecall";
 127         }
 128
 129         return NULL;
 130 }
 131
 132 static const char *reason2string(enum connman_session_reason reason)
 133 {
 134         switch (reason) {
 135         case CONNMAN_SESSION_REASON_UNKNOWN:
 136                 break;
 137         case CONNMAN_SESSION_REASON_CONNECT:
 138                 return "connect";
 139         case CONNMAN_SESSION_REASON_FREE_RIDE:
 140                 return "free-ride";
 141         case CONNMAN_SESSION_REASON_PERIODIC:
 142                 return "periodic";
 143         }
 144
 145         return NULL;
 146 }
 147
 148 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 149 {
 150         switch (policy) {
 151         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 152                 return "unknown";
 153         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 154                 return "default";
 155         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 156                 return "always";
 157         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 158                 return "forbidden";
 159         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 160                 return "national";
 161         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 162                 return "international";
 163         }
 164
 165         return NULL;
 166 }
 167
 168 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 169 {
 170         if (g_strcmp0(policy, "default") == 0)
 171                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 172         else if (g_strcmp0(policy, "always") == 0)
 173                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 174         else if (g_strcmp0(policy, "forbidden") == 0)
 175                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 176         else if (g_strcmp0(policy, "national") == 0)
 177                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 178         else if (g_strcmp0(policy, "international") == 0)
 179                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 180         else
 181                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 182 }
 183
 184 static enum connman_service_type bearer2service(const char *bearer)
 185 {
 186         if (bearer == NULL)
 187                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 188
 189         if (g_strcmp0(bearer, "ethernet") == 0)
 190                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 191         else if (g_strcmp0(bearer, "wifi") == 0)
 192                 return CONNMAN_SERVICE_TYPE_WIFI;
 193         else if (g_strcmp0(bearer, "wimax") == 0)
 194                 return CONNMAN_SERVICE_TYPE_WIMAX;
 195         else if (g_strcmp0(bearer, "bluetooth") == 0)
 196                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 197         else if (g_strcmp0(bearer, "3g") == 0)
 198                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 199         else
 200                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 201 }
 202
 203 static char *service2bearer(enum connman_service_type type)
 204 {
 205         switch (type) {
 206         case CONNMAN_SERVICE_TYPE_ETHERNET:
 207                 return "ethernet";
 208         case CONNMAN_SERVICE_TYPE_WIFI:
 209                 return "wifi";
 210         case CONNMAN_SERVICE_TYPE_WIMAX:
 211                 return "wimax";
 212         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 213                 return "bluetooth";
 214         case CONNMAN_SERVICE_TYPE_CELLULAR:
 215                 return "3g";
 216         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 217         case CONNMAN_SERVICE_TYPE_SYSTEM:
 218         case CONNMAN_SERVICE_TYPE_GPS:
 219         case CONNMAN_SERVICE_TYPE_VPN:
 220         case CONNMAN_SERVICE_TYPE_GADGET:
 221                 return "";
 222         }
 223
 224         return "";
 225 }
 226
 227 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 228 {
 229         struct bearer_info *info = data;
 230
 231         g_free(info->name);
 232         g_free(info);
 233 }
 234
 235 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 236 {
 237         struct bearer_info *info;
 238         DBusMessageIter array;
 239         GSList *list = NULL;
 240
 241         dbus_message_iter_recurse(iter, &array);
 242
 243         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 244                 char *bearer = NULL;
 245
 246                 dbus_message_iter_get_basic(&array, &bearer);
 247
 248                 info = g_try_new0(struct bearer_info, 1);
 249                 if (info == NULL) {
 250                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 251                         g_slist_free(list);
 252
 253                         return NULL;
 254                 }
 255
 256                 info->name = g_strdup(bearer);
 257                 info->service_type = bearer2service(info->name);
 258
 259                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 260                                 g_strcmp0(info->name, "*") == 0) {
 261                         info->match_all = TRUE;
 262                 } else {
 263                         info->match_all = FALSE;
 264                 }
 265
 266                 list = g_slist_append(list, info);
 267
 268                 dbus_message_iter_next(&array);
 269         }
 270
 271         return list;
 272 }
 273
 274 static GSList *session_allowed_bearers_any(void)
 275 {
 276         struct bearer_info *info;
 277         GSList *list = NULL;
 278
 279         info = g_try_new0(struct bearer_info, 1);
 280         if (info == NULL) {
 281                 g_slist_free(list);
 282
 283                 return NULL;
 284         }
 285
 286         info->name = g_strdup("");
 287         info->match_all = TRUE;
 288         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 289
 290         list = g_slist_append(list, info);
 291
 292         return list;
 293 }
 294
 295 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 296 {
 297         struct session_info *info = user_data;
 298         GSList *list;
 299
 300         for (list = info->allowed_bearers;
 301                         list != NULL; list = list->next) {
 302                 struct bearer_info *info = list->data;
 303
 304                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 305                                                 &info->name);
 306         }
 307 }
 308
 309 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 310 {
 311         struct connman_service *service = user_data;
 312         struct connman_ipconfig *ipconfig_ipv4;
 313
 314         if (service == NULL)
 315                 return;
 316
 317         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 318         if (ipconfig_ipv4 == NULL)
 319                 return;
 320
 321         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 322 }
 323
 324 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 325 {
 326         struct connman_service *service = user_data;
 327         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 328
 329         if (service == NULL)
 330                 return;
 331
 332         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 333         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 334         if (ipconfig_ipv6 == NULL)
 335                 return;
 336
 337         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 338 }
 339
 340 static void append_notify(DBusMessageIter *dict,
 341                                         struct connman_session *session)
 342 {
 343         struct session_info *info = session->info;
 344         struct session_info *info_last = session->info_last;
 345         const char *policy;
 346         struct connman_service *service;
 347         const char *name, *ifname, *bearer;
 348
 349         if (session->append_all == TRUE ||
 350                         info->online != info_last->online) {
 351                 connman_dbus_dict_append_basic(dict, "Online",
 352                                                 DBUS_TYPE_BOOLEAN,
 353                                                 &info->online);
 354                 info_last->online = info->online;
 355         }
 356
 357         if (session->append_all == TRUE ||
 358                         info->entry != info_last->entry) {
 359                 if (info->entry == NULL) {
 360                         name = "";
 361                         ifname = "";
 362                         service = NULL;
 363                         bearer = "";
 364                 } else {
 365                         name = info->entry->name;
 366                         ifname = info->entry->ifname;
 367                         service = info->entry->service;
 368                         bearer = info->entry->bearer;
 369                 }
 370
 371                 connman_dbus_dict_append_basic(dict, "Name",
 372                                                 DBUS_TYPE_STRING,
 373                                                 &name);
 374
 375                 connman_dbus_dict_append_dict(dict, "IPv4",
 376                                                 append_ipconfig_ipv4,
 377                                                 service);
 378
 379                 connman_dbus_dict_append_dict(dict, "IPv6",
 380                                                 append_ipconfig_ipv6,
 381                                                 service);
 382
 383                 connman_dbus_dict_append_basic(dict, "Interface",
 384                                                 DBUS_TYPE_STRING,
 385                                                 &ifname);
 386
 387                 connman_dbus_dict_append_basic(dict, "Bearer",
 388                                                 DBUS_TYPE_STRING,
 389                                                 &bearer);
 390
 391                 info_last->entry = info->entry;
 392         }
 393
 394
 395         if (session->append_all == TRUE ||
 396                         info->priority != info_last->priority) {
 397                 connman_dbus_dict_append_basic(dict, "Priority",
 398                                                 DBUS_TYPE_BOOLEAN,
 399                                                 &info->priority);
 400                 info_last->priority = info->priority;
 401         }
 402
 403         if (session->append_all == TRUE ||
 404                         info->allowed_bearers != info_last->allowed_bearers) {
 405                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 406                                                 DBUS_TYPE_STRING,
 407                                                 append_allowed_bearers,
 408                                                 info);
 409                 info_last->allowed_bearers = info->allowed_bearers;
 410         }
 411
 412         if (session->append_all == TRUE ||
 413                         info->avoid_handover != info_last->avoid_handover) {
 414                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 415                                                 DBUS_TYPE_BOOLEAN,
 416                                                 &info->avoid_handover);
 417                 info_last->avoid_handover = info->avoid_handover;
 418         }
 419
 420         if (session->append_all == TRUE ||
 421                         info->stay_connected != info_last->stay_connected) {
 422                 connman_dbus_dict_append_basic(dict, "StayConnected",
 423                                                 DBUS_TYPE_BOOLEAN,
 424                                                 &info->stay_connected);
 425                 info_last->stay_connected = info->stay_connected;
 426         }
 427
 428         if (session->append_all == TRUE ||
 429                         info->periodic_connect != info_last->periodic_connect) {
 430                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 431                                                 DBUS_TYPE_UINT32,
 432                                                 &info->periodic_connect);
 433                 info_last->periodic_connect = info->periodic_connect;
 434         }
 435
 436         if (session->append_all == TRUE ||
 437                         info->idle_timeout != info_last->idle_timeout) {
 438                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 439                                                 DBUS_TYPE_UINT32,
 440                                                 &info->idle_timeout);
 441                 info_last->idle_timeout = info->idle_timeout;
 442         }
 443
 444         if (session->append_all == TRUE ||
 445                         info->ecall != info_last->ecall) {
 446                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 447                                                 DBUS_TYPE_BOOLEAN,
 448                                                 &info->ecall);
 449                 info_last->ecall = info->ecall;
 450         }
 451
 452         if (session->append_all == TRUE ||
 453                         info->roaming_policy != info_last->roaming_policy) {
 454                 policy = roamingpolicy2string(info->roaming_policy);
 455                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 456                                                 DBUS_TYPE_STRING,
 457                                                 &policy);
 458                 info_last->roaming_policy = info->roaming_policy;
 459         }
 460
 461         if (session->append_all == TRUE ||
 462                         info->marker != info_last->marker) {
 463                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 464                                                 DBUS_TYPE_UINT32,
 465                                                 &info->marker);
 466                 info_last->marker = info->marker;
 467         }
 468
 469         session->append_all = FALSE;
 470         session->info_dirty = FALSE;
 471 }
 472
 473 static gboolean session_notify(gpointer user_data)
 474 {
 475         struct connman_session *session = user_data;
 476         DBusMessage *msg;
 477         DBusMessageIter array, dict;
 478
 479         if (session->info_dirty == FALSE)
 480                 return 0;
 481
 482         DBG("session %p owner %s notify_path %s", session,
 483                 session->owner, session->notify_path);
 484
 485         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 486                                                 CONNMAN_NOTIFICATION_INTERFACE,
 487                                                 "Update");
 488         if (msg == NULL)
 489                 return FALSE;
 490
 491         dbus_message_iter_init_append(msg, &array);
 492         connman_dbus_dict_open(&array, &dict);
 493
 494         append_notify(&dict, session);
 495
 496         connman_dbus_dict_close(&array, &dict);
 497
 498         g_dbus_send_message(connection, msg);
 499
 500         session->info_dirty = FALSE;
 501
 502         return FALSE;
 503 }
 504
 505 static void ipconfig_ipv4_changed(struct connman_session *session)
 506 {
 507         struct session_info *info = session->info;
 508
 509         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 510                                                 "IPv4", append_ipconfig_ipv4,
 511                                                 info->entry->service);
 512 }
 513
 514 static void ipconfig_ipv6_changed(struct connman_session *session)
 515 {
 516         struct session_info *info = session->info;
 517
 518         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 519                                                 "IPv6", append_ipconfig_ipv6,
 520                                                 info->entry->service);
 521 }
 522
 523 static connman_bool_t service_type_match(struct connman_session *session,
 524                                         struct connman_service *service)
 525 {
 526         struct session_info *info = session->info;
 527         GSList *list;
 528
 529         for (list = info->allowed_bearers;
 530                         list != NULL; list = list->next) {
 531                 struct bearer_info *info = list->data;
 532                 enum connman_service_type service_type;
 533
 534                 if (info->match_all == TRUE)
 535                         return TRUE;
 536
 537                 service_type = connman_service_get_type(service);
 538                 if (info->service_type == service_type)
 539                         return TRUE;
 540         }
 541
 542         return FALSE;
 543 }
 544
 545 static connman_bool_t service_match(struct connman_session *session,
 546                                         struct connman_service *service)
 547 {
 548         if (service_type_match(session, service) == FALSE)
 549                 return FALSE;
 550
 551         return TRUE;
 552 }
 553
 554 static int service_type_weight(enum connman_service_type type)
 555 {
 556         /*
 557          * The session doesn't care which service
 558          * to use. Nevertheless we have to sort them
 559          * according their type. The ordering is
 560          *
 561          * 1. Ethernet
 562          * 2. Bluetooth
 563          * 3. WiFi/WiMAX
 564          * 4. GSM/UTMS/3G
 565          */
 566
 567         switch (type) {
 568         case CONNMAN_SERVICE_TYPE_ETHERNET:
 569                 return 4;
 570         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 571                 return 3;
 572         case CONNMAN_SERVICE_TYPE_WIFI:
 573         case CONNMAN_SERVICE_TYPE_WIMAX:
 574                 return 2;
 575         case CONNMAN_SERVICE_TYPE_CELLULAR:
 576                 return 1;
 577         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 578         case CONNMAN_SERVICE_TYPE_SYSTEM:
 579         case CONNMAN_SERVICE_TYPE_GPS:
 580         case CONNMAN_SERVICE_TYPE_VPN:
 581         case CONNMAN_SERVICE_TYPE_GADGET:
 582                 break;
 583         }
 584
 585         return 0;
 586 }
 587
 588 static gint sort_allowed_bearers(struct connman_service *service_a,
 589                                         struct connman_service *service_b,
 590                                         struct connman_session *session)
 591 {
 592         struct session_info *info = session->info;
 593         GSList *list;
 594         enum connman_service_type type_a, type_b;
 595         int weight_a, weight_b;
 596
 597         type_a = connman_service_get_type(service_a);
 598         type_b = connman_service_get_type(service_b);
 599
 600         for (list = info->allowed_bearers;
 601                         list != NULL; list = list->next) {
 602                 struct bearer_info *info = list->data;
 603
 604                 if (info->match_all == TRUE) {
 605                         if (type_a != type_b) {
 606                                 weight_a = service_type_weight(type_a);
 607                                 weight_b = service_type_weight(type_b);
 608
 609                                 if (weight_a > weight_b)
 610                                         return -1;
 611
 612                                 if (weight_a < weight_b)
 613                                         return 1;
 614
 615                                 return 0;
 616                         }
 617                 }
 618
 619                 if (type_a == info->service_type &&
 620                                 type_b == info->service_type) {
 621                         return 0;
 622                 }
 623
 624                 if (type_a == info->service_type &&
 625                                 type_b != info->service_type) {
 626                         return -1;
 627                 }
 628
 629                 if (type_a != info->service_type &&
 630                                 type_b == info->service_type) {
 631                         return 1;
 632                 }
 633         }
 634
 635         return 0;
 636 }
 637
 638 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 639 {
 640         struct connman_service *service_a = (void *)a;
 641         struct connman_service *service_b = (void *)b;
 642         struct connman_session *session = user_data;
 643
 644         return sort_allowed_bearers(service_a, service_b, session);
 645 }
 646
 647 static void cleanup_session(gpointer user_data)
 648 {
 649         struct connman_session *session = user_data;
 650         struct session_info *info = session->info;
 651
 652         DBG("remove %s", session->session_path);
 653
 654         g_hash_table_destroy(session->service_hash);
 655         g_sequence_free(session->service_list);
 656
 657         if (info->entry != NULL &&
 658                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 659                 __connman_service_disconnect(info->entry->service);
 660         }
 661
 662         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 663         g_slist_free(info->allowed_bearers);
 664
 665         g_free(session->owner);
 666         g_free(session->session_path);
 667         g_free(session->notify_path);
 668         g_free(session->info);
 669         g_free(session->info_last);
 670
 671         g_free(session);
 672 }
 673
 674 static void release_session(gpointer key, gpointer value, gpointer user_data)
 675 {
 676         struct connman_session *session = value;
 677         DBusMessage *message;
 678
 679         DBG("owner %s path %s", session->owner, session->notify_path);
 680
 681         if (session->notify_watch > 0)
 682                 g_dbus_remove_watch(connection, session->notify_watch);
 683
 684         g_dbus_unregister_interface(connection, session->session_path,
 685                                                 CONNMAN_SESSION_INTERFACE);
 686
 687         message = dbus_message_new_method_call(session->owner,
 688                                                 session->notify_path,
 689                                                 CONNMAN_NOTIFICATION_INTERFACE,
 690                                                 "Release");
 691         if (message == NULL)
 692                 return;
 693
 694         dbus_message_set_no_reply(message, TRUE);
 695
 696         g_dbus_send_message(connection, message);
 697 }
 698
 699 static int session_disconnect(struct connman_session *session)
 700 {
 701         DBG("session %p, %s", session, session->owner);
 702
 703         if (session->notify_watch > 0)
 704                 g_dbus_remove_watch(connection, session->notify_watch);
 705
 706         g_dbus_unregister_interface(connection, session->session_path,
 707                                                 CONNMAN_SESSION_INTERFACE);
 708
 709         g_hash_table_remove(session_hash, session->session_path);
 710
 711         return 0;
 712 }
 713
 714 static void owner_disconnect(DBusConnection *conn, void *user_data)
 715 {
 716         struct connman_session *session = user_data;
 717
 718         DBG("session %p, %s died", session, session->owner);
 719
 720         session_disconnect(session);
 721 }
 722
 723 static DBusMessage *destroy_session(DBusConnection *conn,
 724                                         DBusMessage *msg, void *user_data)
 725 {
 726         struct connman_session *session = user_data;
 727
 728         DBG("session %p", session);
 729
 730         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 731 }
 732
 733 static connman_bool_t is_connected(enum connman_service_state state)
 734 {
 735         switch (state) {
 736         case CONNMAN_SERVICE_STATE_UNKNOWN:
 737         case CONNMAN_SERVICE_STATE_IDLE:
 738         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 739         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 740         case CONNMAN_SERVICE_STATE_DISCONNECT:
 741         case CONNMAN_SERVICE_STATE_FAILURE:
 742                 break;
 743         case CONNMAN_SERVICE_STATE_READY:
 744         case CONNMAN_SERVICE_STATE_ONLINE:
 745                 return TRUE;
 746         }
 747
 748         return FALSE;
 749 }
 750
 751 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 752 {
 753         switch (reason) {
 754         case CONNMAN_SESSION_REASON_UNKNOWN:
 755         case CONNMAN_SESSION_REASON_FREE_RIDE:
 756                 break;
 757         case CONNMAN_SESSION_REASON_CONNECT:
 758         case CONNMAN_SESSION_REASON_PERIODIC:
 759                 return TRUE;
 760         }
 761
 762         return FALSE;
 763 }
 764
 765 static void test_and_disconnect(struct connman_session *session)
 766 {
 767         struct session_info *info = session->info;
 768
 769         if (info->entry == NULL)
 770                 return;
 771
 772         DBG("session %p reason %s service %p state %d",
 773                 session, reason2string(info->entry->reason),
 774                 info->entry->service, info->entry->state);
 775
 776         if (explicit_connect(info->entry->reason) == FALSE)
 777                 goto out;
 778
 779         if (__connman_service_session_dec(info->entry->service) == TRUE)
 780                 goto out;
 781
 782         if (ecall_session != NULL && ecall_session != session)
 783                 goto out;
 784
 785         __connman_service_disconnect(info->entry->service);
 786
 787         /*
 788          * TODO: We should mark this entry as pending work. In case
 789          * disconnect fails we just unassign this session from the
 790          * service and can't do anything later on it
 791          */
 792
 793 out:
 794         info->online = FALSE;
 795         info->entry = NULL;
 796 }
 797
 798 static void select_and_connect(struct connman_session *session,
 799                                 enum connman_session_reason reason)
 800 {
 801         struct session_info *info = session->info;
 802         struct service_entry *entry = NULL;
 803         GSequenceIter *iter;
 804         connman_bool_t do_connect = FALSE;
 805
 806         DBG("session %p reason %s", session, reason2string(reason));
 807
 808         iter = g_sequence_get_begin_iter(session->service_list);
 809
 810         while (g_sequence_iter_is_end(iter) == FALSE) {
 811                 entry = g_sequence_get(iter);
 812
 813                 switch (entry->state) {
 814                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 815                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 816                 case CONNMAN_SERVICE_STATE_READY:
 817                 case CONNMAN_SERVICE_STATE_ONLINE:
 818                         /* connecting or connected */
 819                         break;
 820                 case CONNMAN_SERVICE_STATE_IDLE:
 821                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 822                         if (explicit_connect(reason) == TRUE)
 823                                 do_connect = TRUE;
 824                         break;
 825                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 826                 case CONNMAN_SERVICE_STATE_FAILURE:
 827                         entry = NULL;
 828                         break;
 829                 }
 830
 831                 if (entry != NULL)
 832                         break;
 833
 834                 iter = g_sequence_iter_next(iter);
 835         }
 836
 837         if (info->entry != NULL && info->entry != entry)
 838                 test_and_disconnect(session);
 839
 840         if (entry != NULL) {
 841                 info->entry = entry;
 842                 info->entry->reason = reason;
 843
 844                 if (explicit_connect(reason) == TRUE)
 845                         __connman_service_session_inc(info->entry->service);
 846
 847                 if (do_connect == TRUE)
 848                         __connman_service_connect(info->entry->service);
 849                 else
 850                         info->online = is_connected(entry->state);
 851         }
 852 }
 853
 854 static void session_changed(struct connman_session *session,
 855                                 enum connman_session_trigger trigger)
 856 {
 857         struct session_info *info = session->info;
 858         struct session_info *info_last = session->info_last;
 859         GSequenceIter *iter;
 860
 861         /*
 862          * TODO: This only a placeholder for the 'real' algorithm to
 863          * play a bit around. So we are going to improve it step by step.
 864          */
 865
 866         DBG("session %p trigger %s", session, trigger2string(trigger));
 867
 868         switch (trigger) {
 869         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 870                 DBG("ignore session changed event");
 871                 return;
 872         case CONNMAN_SESSION_TRIGGER_SETTING:
 873                 if (info->entry != NULL) {
 874                         iter = g_hash_table_lookup(session->service_hash,
 875                                                         info->entry->service);
 876                         if (iter == NULL) {
 877                                 /*
 878                                  * This service is not part of this
 879                                  * session anymore.
 880                                  */
 881                                 test_and_disconnect(session);
 882                         }
 883                 }
 884
 885                 if (info->online == FALSE) {
 886                         select_and_connect(session,
 887                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 888                 }
 889
 890                 break;
 891         case CONNMAN_SESSION_TRIGGER_CONNECT:
 892                 if (info->online == TRUE) {
 893                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 894                         __connman_service_session_inc(info->entry->service);
 895                         break;
 896                 }
 897
 898                 select_and_connect(session,
 899                                 CONNMAN_SESSION_REASON_CONNECT);
 900
 901                 break;
 902         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 903                 test_and_disconnect(session);
 904
 905                 break;
 906         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 907                 if (info->online == TRUE) {
 908                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 909                         __connman_service_session_inc(info->entry->service);
 910                         break;
 911                 }
 912
 913                 select_and_connect(session,
 914                                 CONNMAN_SESSION_REASON_PERIODIC);
 915
 916                 break;
 917         case CONNMAN_SESSION_TRIGGER_SERVICE:
 918                 if (info->online == TRUE)
 919                         break;
 920
 921                 if (info->stay_connected == TRUE) {
 922                         DBG("StayConnected");
 923                         select_and_connect(session,
 924                                         CONNMAN_SESSION_REASON_CONNECT);
 925
 926                         break;
 927                 }
 928
 929                 select_and_connect(session,
 930                                 CONNMAN_SESSION_REASON_FREE_RIDE);
 931
 932                 break;
 933         case CONNMAN_SESSION_TRIGGER_ECALL:
 934                 if (info->online == FALSE && info->entry->service != NULL)
 935                         test_and_disconnect(session);
 936
 937                 break;
 938         }
 939
 940         if (info->entry != info_last->entry)
 941                 session->info_dirty = TRUE;
 942
 943         session_notify(session);
 944 }
 945
 946 static DBusMessage *connect_session(DBusConnection *conn,
 947                                         DBusMessage *msg, void *user_data)
 948 {
 949         struct connman_session *session = user_data;
 950
 951         DBG("session %p", session);
 952
 953         if (ecall_session != NULL && ecall_session != session)
 954                 return __connman_error_failed(msg, EBUSY);
 955
 956         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 957
 958         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 959 }
 960
 961 static DBusMessage *disconnect_session(DBusConnection *conn,
 962                                         DBusMessage *msg, void *user_data)
 963 {
 964         struct connman_session *session = user_data;
 965
 966         DBG("session %p", session);
 967
 968         if (ecall_session != NULL && ecall_session != session)
 969                 return __connman_error_failed(msg, EBUSY);
 970
 971         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 972
 973         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 974 }
 975
 976 static struct service_entry *create_service_entry(struct connman_service *service,
 977                                         const char *name,
 978                                         enum connman_service_state state)
 979 {
 980         struct service_entry *entry;
 981         enum connman_service_type type;
 982         int idx;
 983
 984         entry = g_try_new0(struct service_entry, 1);
 985         if (entry == NULL)
 986                 return entry;
 987
 988         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 989         entry->state = state;
 990         entry->name = name;
 991         entry->service = service;
 992
 993         idx = __connman_service_get_index(entry->service);
 994         entry->ifname = connman_inet_ifname(idx);
 995         if (entry->ifname == NULL)
 996                 entry->ifname = "";
 997
 998         type = connman_service_get_type(entry->service);
 999         entry->bearer = service2bearer(type);
1000
1001         return entry;
1002 }
1003
1004 static void destroy_service_entry(gpointer data)
1005 {
1006         struct service_entry *entry = data;
1007
1008         g_free(entry);
1009 }
1010
1011 static void update_allowed_bearers(struct connman_session *session)
1012 {
1013         struct service_entry *entry;
1014         GSequenceIter *iter;
1015
1016         if (session->service_list != NULL) {
1017                 g_hash_table_remove_all(session->service_hash);
1018                 g_sequence_free(session->service_list);
1019         }
1020
1021         session->service_list = __connman_service_get_list(session,
1022                                                         service_match,
1023                                                         create_service_entry,
1024                                                         destroy_service_entry);
1025
1026         g_sequence_sort(session->service_list, sort_services, session);
1027
1028         iter = g_sequence_get_begin_iter(session->service_list);
1029
1030         while (g_sequence_iter_is_end(iter) == FALSE) {
1031                 entry = g_sequence_get(iter);
1032
1033                 DBG("service %p type %s name %s", entry->service,
1034                         service2bearer(connman_service_get_type(entry->service)),
1035                         entry->name);
1036
1037                 g_hash_table_replace(session->service_hash,
1038                                         entry->service, iter);
1039
1040                 iter = g_sequence_iter_next(iter);
1041         }
1042
1043         session->info_dirty = TRUE;
1044 }
1045
1046 static void update_ecall_sessions(struct connman_session *session)
1047 {
1048         struct session_info *info = session->info;
1049         struct connman_session *session_iter;
1050         GHashTableIter iter;
1051         gpointer key, value;
1052
1053         g_hash_table_iter_init(&iter, session_hash);
1054
1055         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1056                 session_iter = value;
1057
1058                 if (session_iter == session)
1059                         continue;
1060
1061                 session_iter->info->ecall = info->ecall;
1062                 session_iter->info_dirty = TRUE;
1063
1064                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1065         }
1066 }
1067
1068 static void update_ecall(struct connman_session *session)
1069 {
1070         struct session_info *info = session->info;
1071         struct session_info *info_last = session->info_last;
1072
1073         DBG("session %p ecall_session %p ecall %d -> %d", session,
1074                 ecall_session, info_last->ecall, info->ecall);
1075
1076         if (ecall_session == NULL) {
1077                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1078                         goto err;
1079
1080                 ecall_session = session;
1081         } else if (ecall_session == session) {
1082                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1083                         goto err;
1084
1085                 ecall_session = NULL;
1086         } else {
1087                 goto err;
1088         }
1089
1090         update_ecall_sessions(session);
1091
1092         session->info_dirty = TRUE;
1093         return;
1094
1095 err:
1096         /* not a valid transition */
1097         info->ecall = info_last->ecall;
1098 }
1099
1100 static DBusMessage *change_session(DBusConnection *conn,
1101                                         DBusMessage *msg, void *user_data)
1102 {
1103         struct connman_session *session = user_data;
1104         struct session_info *info = session->info;
1105         struct session_info *info_last = session->info_last;
1106         DBusMessageIter iter, value;
1107         const char *name;
1108         GSList *allowed_bearers;
1109
1110         DBG("session %p", session);
1111         if (dbus_message_iter_init(msg, &iter) == FALSE)
1112                 return __connman_error_invalid_arguments(msg);
1113
1114         dbus_message_iter_get_basic(&iter, &name);
1115         dbus_message_iter_next(&iter);
1116         dbus_message_iter_recurse(&iter, &value);
1117
1118         switch (dbus_message_iter_get_arg_type(&value)) {
1119         case DBUS_TYPE_ARRAY:
1120                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1121                         allowed_bearers = session_parse_allowed_bearers(&value);
1122
1123                         g_slist_foreach(info->allowed_bearers,
1124                                         cleanup_bearer_info, NULL);
1125                         g_slist_free(info->allowed_bearers);
1126
1127                         if (allowed_bearers == NULL) {
1128                                 allowed_bearers = session_allowed_bearers_any();
1129
1130                                 if (allowed_bearers == NULL)
1131                                         return __connman_error_failed(msg, ENOMEM);
1132                         }
1133
1134                         info->allowed_bearers = allowed_bearers;
1135
1136                         update_allowed_bearers(session);
1137                 } else {
1138                         goto err;
1139                 }
1140                 break;
1141         case DBUS_TYPE_BOOLEAN:
1142                 if (g_str_equal(name, "Priority") == TRUE) {
1143                         dbus_message_iter_get_basic(&value,
1144                                         &info->priority);
1145
1146                         if (info_last->priority != info->priority)
1147                                 session->info_dirty = TRUE;
1148                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1149                         dbus_message_iter_get_basic(&value,
1150                                         &info->avoid_handover);
1151
1152                         if (info_last->avoid_handover != info->avoid_handover)
1153                                 session->info_dirty = TRUE;
1154                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1155                         dbus_message_iter_get_basic(&value,
1156                                         &info->stay_connected);
1157
1158                         if (info_last->stay_connected != info->stay_connected)
1159                                 session->info_dirty = TRUE;
1160                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1161                         dbus_message_iter_get_basic(&value,
1162                                         &info->ecall);
1163
1164                         update_ecall(session);
1165                 } else {
1166                         goto err;
1167                 }
1168                 break;
1169         case DBUS_TYPE_UINT32:
1170                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1171                         dbus_message_iter_get_basic(&value,
1172                                         &info->periodic_connect);
1173
1174                         if (info_last->periodic_connect != info->periodic_connect)
1175                                 session->info_dirty = TRUE;
1176                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1177                         dbus_message_iter_get_basic(&value,
1178                                         &info->idle_timeout);
1179
1180                         if (info_last->idle_timeout != info->idle_timeout)
1181                                 session->info_dirty = TRUE;
1182                 } else {
1183                         goto err;
1184                 }
1185                 break;
1186         case DBUS_TYPE_STRING:
1187                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1188                         const char *val;
1189                         dbus_message_iter_get_basic(&value, &val);
1190                         info->roaming_policy =
1191                                         string2roamingpolicy(val);
1192
1193                         if (info_last->roaming_policy != info->roaming_policy)
1194                                 session->info_dirty = TRUE;
1195                 } else {
1196                         goto err;
1197                 }
1198                 break;
1199         default:
1200                 goto err;
1201         }
1202
1203         if (session->info_dirty == TRUE)
1204                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1205
1206         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1207
1208 err:
1209         return __connman_error_invalid_arguments(msg);
1210 }
1211
1212 static GDBusMethodTable session_methods[] = {
1213         { "Destroy",    "",   "", destroy_session    },
1214         { "Connect",    "",   "", connect_session    },
1215         { "Disconnect", "",   "", disconnect_session },
1216         { "Change",     "sv", "", change_session     },
1217         { },
1218 };
1219
1220 int __connman_session_create(DBusMessage *msg)
1221 {
1222         const char *owner, *notify_path;
1223         char *session_path = NULL;
1224         DBusMessageIter iter, array;
1225         struct connman_session *session = NULL;
1226         struct session_info *info, *info_last;
1227
1228         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1229         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1230         enum connman_session_roaming_policy roaming_policy =
1231                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1232         GSList *allowed_bearers = NULL;
1233         unsigned int periodic_connect = 0;
1234         unsigned int idle_timeout = 0;
1235
1236         int err;
1237
1238         owner = dbus_message_get_sender(msg);
1239
1240         DBG("owner %s", owner);
1241
1242         if (ecall_session != NULL) {
1243                 /*
1244                  * If there is an emergency call already going on,
1245                  * ignore session creation attempt
1246                  */
1247                 err = -EBUSY;
1248                 goto err;
1249         }
1250
1251         dbus_message_iter_init(msg, &iter);
1252         dbus_message_iter_recurse(&iter, &array);
1253
1254         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1255                 DBusMessageIter entry, value;
1256                 const char *key, *val;
1257
1258                 dbus_message_iter_recurse(&array, &entry);
1259                 dbus_message_iter_get_basic(&entry, &key);
1260
1261                 dbus_message_iter_next(&entry);
1262                 dbus_message_iter_recurse(&entry, &value);
1263
1264                 switch (dbus_message_iter_get_arg_type(&value)) {
1265                 case DBUS_TYPE_ARRAY:
1266                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1267                                 allowed_bearers =
1268                                         session_parse_allowed_bearers(&value);
1269                         } else {
1270                                 return -EINVAL;
1271                         }
1272                         break;
1273                 case DBUS_TYPE_BOOLEAN:
1274                         if (g_str_equal(key, "Priority") == TRUE) {
1275                                 dbus_message_iter_get_basic(&value,
1276                                                         &priority);
1277                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1278                                 dbus_message_iter_get_basic(&value,
1279                                                         &avoid_handover);
1280                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1281                                 dbus_message_iter_get_basic(&value,
1282                                                         &stay_connected);
1283                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1284                                 dbus_message_iter_get_basic(&value,
1285                                                         &ecall);
1286                         } else {
1287                                 return -EINVAL;
1288                         }
1289                         break;
1290                 case DBUS_TYPE_UINT32:
1291                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1292                                 dbus_message_iter_get_basic(&value,
1293                                                         &periodic_connect);
1294                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1295                                 dbus_message_iter_get_basic(&value,
1296                                                         &idle_timeout);
1297                         } else {
1298                                 return -EINVAL;
1299                         }
1300                         break;
1301                 case DBUS_TYPE_STRING:
1302                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1303                                 dbus_message_iter_get_basic(&value, &val);
1304                                 roaming_policy = string2roamingpolicy(val);
1305                         } else {
1306                                 return -EINVAL;
1307                         }
1308                 }
1309                 dbus_message_iter_next(&array);
1310         }
1311
1312         dbus_message_iter_next(&iter);
1313         dbus_message_iter_get_basic(&iter, &notify_path);
1314
1315         if (notify_path == NULL) {
1316                 err = -EINVAL;
1317                 goto err;
1318         }
1319
1320         session_path = g_strdup_printf("/sessions%s", notify_path);
1321         if (session_path == NULL) {
1322                 err = -ENOMEM;
1323                 goto err;
1324         }
1325
1326         session = g_hash_table_lookup(session_hash, session_path);
1327         if (session != NULL) {
1328                 session = NULL;
1329                 err = -EEXIST;
1330                 goto err;
1331         }
1332
1333         session = g_try_new0(struct connman_session, 1);
1334         if (session == NULL) {
1335                 err = -ENOMEM;
1336                 goto err;
1337         }
1338
1339         session->info = g_try_new0(struct session_info, 1);
1340         if (session->info == NULL) {
1341                 err = -ENOMEM;
1342                 goto err;
1343         }
1344
1345         session->info_last = g_try_new0(struct session_info, 1);
1346         if (session->info_last == NULL) {
1347                 err = -ENOMEM;
1348                 goto err;
1349         }
1350
1351         info = session->info;
1352         info_last = session->info_last;
1353
1354         session->owner = g_strdup(owner);
1355         session->session_path = session_path;
1356         session->notify_path = g_strdup(notify_path);
1357         session->notify_watch =
1358                 g_dbus_add_disconnect_watch(connection, session->owner,
1359                                         owner_disconnect, session, NULL);
1360
1361         session->service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1362                                                 NULL, NULL);
1363
1364         info->online = FALSE;
1365         info->priority = priority;
1366         info->avoid_handover = avoid_handover;
1367         info->stay_connected = stay_connected;
1368         info->periodic_connect = periodic_connect;
1369         info->idle_timeout = idle_timeout;
1370         info->ecall = ecall;
1371         info->roaming_policy = roaming_policy;
1372         info->entry = NULL;
1373         info->marker = 0;
1374
1375         if (allowed_bearers == NULL) {
1376                 info->allowed_bearers =
1377                                 session_allowed_bearers_any();
1378
1379                 if (info->allowed_bearers == NULL) {
1380                         err = -ENOMEM;
1381                         goto err;
1382                 }
1383         } else {
1384                 info->allowed_bearers = allowed_bearers;
1385         }
1386
1387         g_hash_table_replace(session_hash, session->session_path, session);
1388
1389         DBG("add %s", session->session_path);
1390
1391         if (g_dbus_register_interface(connection, session->session_path,
1392                                         CONNMAN_SESSION_INTERFACE,
1393                                         session_methods, NULL,
1394                                         NULL, session, NULL) == FALSE) {
1395                 connman_error("Failed to register %s", session->session_path);
1396                 g_hash_table_remove(session_hash, session->session_path);
1397                 session = NULL;
1398
1399                 err = -EINVAL;
1400                 goto err;
1401         }
1402
1403         g_dbus_send_reply(connection, msg,
1404                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1405                                 DBUS_TYPE_INVALID);
1406
1407
1408         update_allowed_bearers(session);
1409         if (info->ecall == TRUE) {
1410                 ecall_session = session;
1411                 update_ecall_sessions(session);
1412         }
1413
1414         info_last->online = info->online;
1415         info_last->priority = info->priority;
1416         info_last->avoid_handover = info->avoid_handover;
1417         info_last->stay_connected = info->stay_connected;
1418         info_last->periodic_connect = info->periodic_connect;
1419         info_last->idle_timeout = info->idle_timeout;
1420         info_last->ecall = info->ecall;
1421         info_last->roaming_policy = info->roaming_policy;
1422         info_last->entry = info->entry;
1423         info_last->marker = info->marker;
1424         info_last->allowed_bearers = info->allowed_bearers;
1425
1426         session->info_dirty = TRUE;
1427         session->append_all = TRUE;
1428
1429         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1430
1431         return 0;
1432
1433 err:
1434         connman_error("Failed to create session");
1435
1436         if (session != NULL) {
1437                 if (session->info_last != NULL)
1438                         g_free(session->info_last);
1439                 if (session->info != NULL)
1440                         g_free(session->info);
1441                 g_free(session);
1442         }
1443
1444         g_free(session_path);
1445
1446         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1447         g_slist_free(allowed_bearers);
1448
1449         return err;
1450 }
1451
1452 int __connman_session_destroy(DBusMessage *msg)
1453 {
1454         const char *owner, *session_path;
1455         struct connman_session *session;
1456
1457         owner = dbus_message_get_sender(msg);
1458
1459         DBG("owner %s", owner);
1460
1461         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1462                                                         DBUS_TYPE_INVALID);
1463         if (session_path == NULL)
1464                 return -EINVAL;
1465
1466         session = g_hash_table_lookup(session_hash, session_path);
1467         if (session == NULL)
1468                 return -EINVAL;
1469
1470         if (g_strcmp0(owner, session->owner) != 0)
1471                 return -EACCES;
1472
1473         session_disconnect(session);
1474
1475         return 0;
1476 }
1477
1478 connman_bool_t __connman_session_mode()
1479 {
1480         return sessionmode;
1481 }
1482
1483 void __connman_session_set_mode(connman_bool_t enable)
1484 {
1485         DBG("enable %d", enable);
1486
1487         if (sessionmode == enable)
1488                 return;
1489
1490         sessionmode = enable;
1491
1492         if (sessionmode == TRUE)
1493                 __connman_service_disconnect_all();
1494 }
1495
1496 static void service_add(struct connman_service *service)
1497 {
1498         GHashTableIter iter;
1499         GSequenceIter *iter_service_list;
1500         gpointer key, value;
1501         struct connman_session *session;
1502
1503         DBG("service %p", service);
1504
1505         g_hash_table_iter_init(&iter, session_hash);
1506
1507         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1508                 session = value;
1509
1510                 if (service_match(session, service) == FALSE)
1511                         continue;
1512
1513                 iter_service_list =
1514                         g_sequence_insert_sorted(session->service_list,
1515                                                         service, sort_services,
1516                                                         session);
1517
1518                 g_hash_table_replace(session->service_hash, service,
1519                                         iter_service_list);
1520
1521                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1522         }
1523 }
1524
1525 static void service_remove(struct connman_service *service)
1526 {
1527
1528         GHashTableIter iter;
1529         gpointer key, value;
1530         struct connman_session *session;
1531         struct session_info *info;
1532
1533         DBG("service %p", service);
1534
1535         g_hash_table_iter_init(&iter, session_hash);
1536
1537         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1538                 GSequenceIter *iter;
1539                 session = value;
1540                 info = session->info;
1541
1542                 iter = g_hash_table_lookup(session->service_hash, service);
1543                 if (iter == NULL)
1544                         continue;
1545
1546                 g_sequence_remove(iter);
1547
1548                 info->entry = NULL;
1549                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1550         }
1551 }
1552
1553 static void service_state_changed(struct connman_service *service,
1554                                         enum connman_service_state state)
1555 {
1556         GHashTableIter iter;
1557         gpointer key, value;
1558         struct connman_session *session;
1559         struct session_info *info, *info_last;
1560
1561         DBG("service %p state %d", service, state);
1562
1563         g_hash_table_iter_init(&iter, session_hash);
1564
1565         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1566                 session = value;
1567                 info = session->info;
1568                 info_last = session->info_last;
1569
1570                 if (info->entry != NULL && info->entry->service == service) {
1571                         info->entry->state = state;
1572                         info->online = is_connected(info->entry->state);
1573                         if (info_last->online != info->online)
1574                                 session->info_dirty = TRUE;
1575                 }
1576
1577                 session_changed(session,
1578                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1579         }
1580 }
1581
1582 static void ipconfig_changed(struct connman_service *service,
1583                                 struct connman_ipconfig *ipconfig)
1584 {
1585         GHashTableIter iter;
1586         gpointer key, value;
1587         struct connman_session *session;
1588         struct session_info *info;
1589         enum connman_ipconfig_type type;
1590
1591         DBG("service %p ipconfig %p", service, ipconfig);
1592
1593         type = __connman_ipconfig_get_config_type(ipconfig);
1594
1595         g_hash_table_iter_init(&iter, session_hash);
1596
1597         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1598                 session = value;
1599                 info = session->info;
1600
1601                 if (info->entry != NULL && info->entry->service == service) {
1602                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1603                                 ipconfig_ipv4_changed(session);
1604                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1605                                 ipconfig_ipv6_changed(session);
1606                 }
1607         }
1608 }
1609
1610 static struct connman_notifier session_notifier = {
1611         .name                   = "session",
1612         .service_add            = service_add,
1613         .service_remove         = service_remove,
1614         .service_state_changed  = service_state_changed,
1615         .ipconfig_changed       = ipconfig_changed,
1616 };
1617
1618 int __connman_session_init(void)
1619 {
1620         int err;
1621
1622         DBG("");
1623
1624         connection = connman_dbus_get_connection();
1625         if (connection == NULL)
1626                 return -1;
1627
1628         err = connman_notifier_register(&session_notifier);
1629         if (err < 0) {
1630                 dbus_connection_unref(connection);
1631                 return err;
1632         }
1633
1634         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1635                                                 NULL, cleanup_session);
1636
1637         sessionmode = FALSE;
1638         return 0;
1639 }
1640
1641 void __connman_session_cleanup(void)
1642 {
1643         DBG("");
1644
1645         if (connection == NULL)
1646                 return;
1647
1648         connman_notifier_unregister(&session_notifier);
1649
1650         g_hash_table_foreach(session_hash, release_session, NULL);
1651         g_hash_table_destroy(session_hash);
1652
1653         dbus_connection_unref(connection);
1654 }