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 service_entry *entry_a = (void *)a;
 641         struct service_entry *entry_b = (void *)b;
 642         struct connman_session *session = user_data;
 643
 644         return sort_allowed_bearers(entry_a->service, entry_b->service,
 645                                 session);
 646 }
 647
 648 static void cleanup_session(gpointer user_data)
 649 {
 650         struct connman_session *session = user_data;
 651         struct session_info *info = session->info;
 652
 653         DBG("remove %s", session->session_path);
 654
 655         g_hash_table_destroy(session->service_hash);
 656         g_sequence_free(session->service_list);
 657
 658         if (info->entry != NULL &&
 659                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 660                 __connman_service_disconnect(info->entry->service);
 661         }
 662
 663         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 664         g_slist_free(info->allowed_bearers);
 665
 666         g_free(session->owner);
 667         g_free(session->session_path);
 668         g_free(session->notify_path);
 669         g_free(session->info);
 670         g_free(session->info_last);
 671
 672         g_free(session);
 673 }
 674
 675 static void release_session(gpointer key, gpointer value, gpointer user_data)
 676 {
 677         struct connman_session *session = value;
 678         DBusMessage *message;
 679
 680         DBG("owner %s path %s", session->owner, session->notify_path);
 681
 682         if (session->notify_watch > 0)
 683                 g_dbus_remove_watch(connection, session->notify_watch);
 684
 685         g_dbus_unregister_interface(connection, session->session_path,
 686                                                 CONNMAN_SESSION_INTERFACE);
 687
 688         message = dbus_message_new_method_call(session->owner,
 689                                                 session->notify_path,
 690                                                 CONNMAN_NOTIFICATION_INTERFACE,
 691                                                 "Release");
 692         if (message == NULL)
 693                 return;
 694
 695         dbus_message_set_no_reply(message, TRUE);
 696
 697         g_dbus_send_message(connection, message);
 698 }
 699
 700 static int session_disconnect(struct connman_session *session)
 701 {
 702         DBG("session %p, %s", session, session->owner);
 703
 704         if (session->notify_watch > 0)
 705                 g_dbus_remove_watch(connection, session->notify_watch);
 706
 707         g_dbus_unregister_interface(connection, session->session_path,
 708                                                 CONNMAN_SESSION_INTERFACE);
 709
 710         g_hash_table_remove(session_hash, session->session_path);
 711
 712         return 0;
 713 }
 714
 715 static void owner_disconnect(DBusConnection *conn, void *user_data)
 716 {
 717         struct connman_session *session = user_data;
 718
 719         DBG("session %p, %s died", session, session->owner);
 720
 721         session_disconnect(session);
 722 }
 723
 724 static DBusMessage *destroy_session(DBusConnection *conn,
 725                                         DBusMessage *msg, void *user_data)
 726 {
 727         struct connman_session *session = user_data;
 728
 729         DBG("session %p", session);
 730
 731         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 732 }
 733
 734 static connman_bool_t is_connected(enum connman_service_state state)
 735 {
 736         switch (state) {
 737         case CONNMAN_SERVICE_STATE_UNKNOWN:
 738         case CONNMAN_SERVICE_STATE_IDLE:
 739         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 740         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 741         case CONNMAN_SERVICE_STATE_DISCONNECT:
 742         case CONNMAN_SERVICE_STATE_FAILURE:
 743                 break;
 744         case CONNMAN_SERVICE_STATE_READY:
 745         case CONNMAN_SERVICE_STATE_ONLINE:
 746                 return TRUE;
 747         }
 748
 749         return FALSE;
 750 }
 751
 752 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 753 {
 754         switch (reason) {
 755         case CONNMAN_SESSION_REASON_UNKNOWN:
 756         case CONNMAN_SESSION_REASON_FREE_RIDE:
 757                 break;
 758         case CONNMAN_SESSION_REASON_CONNECT:
 759         case CONNMAN_SESSION_REASON_PERIODIC:
 760                 return TRUE;
 761         }
 762
 763         return FALSE;
 764 }
 765
 766 static void test_and_disconnect(struct connman_session *session)
 767 {
 768         struct session_info *info = session->info;
 769
 770         if (info->entry == NULL)
 771                 return;
 772
 773         DBG("session %p reason %s service %p state %d",
 774                 session, reason2string(info->entry->reason),
 775                 info->entry->service, info->entry->state);
 776
 777         if (explicit_connect(info->entry->reason) == FALSE)
 778                 goto out;
 779
 780         if (__connman_service_session_dec(info->entry->service) == TRUE)
 781                 goto out;
 782
 783         if (ecall_session != NULL && ecall_session != session)
 784                 goto out;
 785
 786         __connman_service_disconnect(info->entry->service);
 787
 788         /*
 789          * TODO: We should mark this entry as pending work. In case
 790          * disconnect fails we just unassign this session from the
 791          * service and can't do anything later on it
 792          */
 793
 794 out:
 795         info->online = FALSE;
 796         info->entry = NULL;
 797 }
 798
 799 static void select_and_connect(struct connman_session *session,
 800                                 enum connman_session_reason reason)
 801 {
 802         struct session_info *info = session->info;
 803         struct service_entry *entry = NULL;
 804         GSequenceIter *iter;
 805         connman_bool_t do_connect = FALSE;
 806
 807         DBG("session %p reason %s", session, reason2string(reason));
 808
 809         iter = g_sequence_get_begin_iter(session->service_list);
 810
 811         while (g_sequence_iter_is_end(iter) == FALSE) {
 812                 entry = g_sequence_get(iter);
 813
 814                 switch (entry->state) {
 815                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 816                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 817                 case CONNMAN_SERVICE_STATE_READY:
 818                 case CONNMAN_SERVICE_STATE_ONLINE:
 819                         /* connecting or connected */
 820                         break;
 821                 case CONNMAN_SERVICE_STATE_IDLE:
 822                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 823                         if (explicit_connect(reason) == TRUE)
 824                                 do_connect = TRUE;
 825                         break;
 826                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 827                 case CONNMAN_SERVICE_STATE_FAILURE:
 828                         entry = NULL;
 829                         break;
 830                 }
 831
 832                 if (entry != NULL)
 833                         break;
 834
 835                 iter = g_sequence_iter_next(iter);
 836         }
 837
 838         if (info->entry != NULL && info->entry != entry)
 839                 test_and_disconnect(session);
 840
 841         if (entry != NULL) {
 842                 info->entry = entry;
 843                 info->entry->reason = reason;
 844
 845                 if (explicit_connect(reason) == TRUE)
 846                         __connman_service_session_inc(info->entry->service);
 847
 848                 if (do_connect == TRUE)
 849                         __connman_service_connect(info->entry->service);
 850                 else
 851                         info->online = is_connected(entry->state);
 852         }
 853 }
 854
 855 static void session_changed(struct connman_session *session,
 856                                 enum connman_session_trigger trigger)
 857 {
 858         struct session_info *info = session->info;
 859         struct session_info *info_last = session->info_last;
 860         GSequenceIter *iter;
 861
 862         /*
 863          * TODO: This only a placeholder for the 'real' algorithm to
 864          * play a bit around. So we are going to improve it step by step.
 865          */
 866
 867         DBG("session %p trigger %s", session, trigger2string(trigger));
 868
 869         switch (trigger) {
 870         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 871                 DBG("ignore session changed event");
 872                 return;
 873         case CONNMAN_SESSION_TRIGGER_SETTING:
 874                 if (info->entry != NULL) {
 875                         iter = g_hash_table_lookup(session->service_hash,
 876                                                         info->entry->service);
 877                         if (iter == NULL) {
 878                                 /*
 879                                  * This service is not part of this
 880                                  * session anymore.
 881                                  */
 882                                 test_and_disconnect(session);
 883                         }
 884                 }
 885
 886                 if (info->online == FALSE) {
 887                         select_and_connect(session,
 888                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 889                 }
 890
 891                 break;
 892         case CONNMAN_SESSION_TRIGGER_CONNECT:
 893                 if (info->online == TRUE) {
 894                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 895                         __connman_service_session_inc(info->entry->service);
 896                         break;
 897                 }
 898
 899                 select_and_connect(session,
 900                                 CONNMAN_SESSION_REASON_CONNECT);
 901
 902                 break;
 903         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 904                 test_and_disconnect(session);
 905
 906                 break;
 907         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 908                 if (info->online == TRUE) {
 909                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 910                         __connman_service_session_inc(info->entry->service);
 911                         break;
 912                 }
 913
 914                 select_and_connect(session,
 915                                 CONNMAN_SESSION_REASON_PERIODIC);
 916
 917                 break;
 918         case CONNMAN_SESSION_TRIGGER_SERVICE:
 919                 if (info->online == TRUE)
 920                         break;
 921
 922                 if (info->stay_connected == TRUE) {
 923                         DBG("StayConnected");
 924                         select_and_connect(session,
 925                                         CONNMAN_SESSION_REASON_CONNECT);
 926
 927                         break;
 928                 }
 929
 930                 select_and_connect(session,
 931                                 CONNMAN_SESSION_REASON_FREE_RIDE);
 932
 933                 break;
 934         case CONNMAN_SESSION_TRIGGER_ECALL:
 935                 if (info->online == FALSE && info->entry->service != NULL)
 936                         test_and_disconnect(session);
 937
 938                 break;
 939         }
 940
 941         if (info->entry != info_last->entry)
 942                 session->info_dirty = TRUE;
 943
 944         session_notify(session);
 945 }
 946
 947 static DBusMessage *connect_session(DBusConnection *conn,
 948                                         DBusMessage *msg, void *user_data)
 949 {
 950         struct connman_session *session = user_data;
 951
 952         DBG("session %p", session);
 953
 954         if (ecall_session != NULL && ecall_session != session)
 955                 return __connman_error_failed(msg, EBUSY);
 956
 957         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 958
 959         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 960 }
 961
 962 static DBusMessage *disconnect_session(DBusConnection *conn,
 963                                         DBusMessage *msg, void *user_data)
 964 {
 965         struct connman_session *session = user_data;
 966
 967         DBG("session %p", session);
 968
 969         if (ecall_session != NULL && ecall_session != session)
 970                 return __connman_error_failed(msg, EBUSY);
 971
 972         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 973
 974         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 975 }
 976
 977 static struct service_entry *create_service_entry(struct connman_service *service,
 978                                         const char *name,
 979                                         enum connman_service_state state)
 980 {
 981         struct service_entry *entry;
 982         enum connman_service_type type;
 983         int idx;
 984
 985         entry = g_try_new0(struct service_entry, 1);
 986         if (entry == NULL)
 987                 return entry;
 988
 989         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 990         entry->state = state;
 991         entry->name = name;
 992         entry->service = service;
 993
 994         idx = __connman_service_get_index(entry->service);
 995         entry->ifname = connman_inet_ifname(idx);
 996         if (entry->ifname == NULL)
 997                 entry->ifname = "";
 998
 999         type = connman_service_get_type(entry->service);
1000         entry->bearer = service2bearer(type);
1001
1002         return entry;
1003 }
1004
1005 static void destroy_service_entry(gpointer data)
1006 {
1007         struct service_entry *entry = data;
1008
1009         g_free(entry);
1010 }
1011
1012 static void update_allowed_bearers(struct connman_session *session)
1013 {
1014         struct service_entry *entry;
1015         GSequenceIter *iter;
1016
1017         if (session->service_list != NULL) {
1018                 g_hash_table_remove_all(session->service_hash);
1019                 g_sequence_free(session->service_list);
1020         }
1021
1022         session->service_list = __connman_service_get_list(session,
1023                                                         service_match,
1024                                                         create_service_entry,
1025                                                         destroy_service_entry);
1026
1027         g_sequence_sort(session->service_list, sort_services, session);
1028
1029         iter = g_sequence_get_begin_iter(session->service_list);
1030
1031         while (g_sequence_iter_is_end(iter) == FALSE) {
1032                 entry = g_sequence_get(iter);
1033
1034                 DBG("service %p type %s name %s", entry->service,
1035                         service2bearer(connman_service_get_type(entry->service)),
1036                         entry->name);
1037
1038                 g_hash_table_replace(session->service_hash,
1039                                         entry->service, iter);
1040
1041                 iter = g_sequence_iter_next(iter);
1042         }
1043
1044         session->info_dirty = TRUE;
1045 }
1046
1047 static void update_ecall_sessions(struct connman_session *session)
1048 {
1049         struct session_info *info = session->info;
1050         struct connman_session *session_iter;
1051         GHashTableIter iter;
1052         gpointer key, value;
1053
1054         g_hash_table_iter_init(&iter, session_hash);
1055
1056         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1057                 session_iter = value;
1058
1059                 if (session_iter == session)
1060                         continue;
1061
1062                 session_iter->info->ecall = info->ecall;
1063                 session_iter->info_dirty = TRUE;
1064
1065                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1066         }
1067 }
1068
1069 static void update_ecall(struct connman_session *session)
1070 {
1071         struct session_info *info = session->info;
1072         struct session_info *info_last = session->info_last;
1073
1074         DBG("session %p ecall_session %p ecall %d -> %d", session,
1075                 ecall_session, info_last->ecall, info->ecall);
1076
1077         if (ecall_session == NULL) {
1078                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1079                         goto err;
1080
1081                 ecall_session = session;
1082         } else if (ecall_session == session) {
1083                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1084                         goto err;
1085
1086                 ecall_session = NULL;
1087         } else {
1088                 goto err;
1089         }
1090
1091         update_ecall_sessions(session);
1092
1093         session->info_dirty = TRUE;
1094         return;
1095
1096 err:
1097         /* not a valid transition */
1098         info->ecall = info_last->ecall;
1099 }
1100
1101 static DBusMessage *change_session(DBusConnection *conn,
1102                                         DBusMessage *msg, void *user_data)
1103 {
1104         struct connman_session *session = user_data;
1105         struct session_info *info = session->info;
1106         struct session_info *info_last = session->info_last;
1107         DBusMessageIter iter, value;
1108         const char *name;
1109         GSList *allowed_bearers;
1110
1111         DBG("session %p", session);
1112         if (dbus_message_iter_init(msg, &iter) == FALSE)
1113                 return __connman_error_invalid_arguments(msg);
1114
1115         dbus_message_iter_get_basic(&iter, &name);
1116         dbus_message_iter_next(&iter);
1117         dbus_message_iter_recurse(&iter, &value);
1118
1119         switch (dbus_message_iter_get_arg_type(&value)) {
1120         case DBUS_TYPE_ARRAY:
1121                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1122                         allowed_bearers = session_parse_allowed_bearers(&value);
1123
1124                         g_slist_foreach(info->allowed_bearers,
1125                                         cleanup_bearer_info, NULL);
1126                         g_slist_free(info->allowed_bearers);
1127
1128                         if (allowed_bearers == NULL) {
1129                                 allowed_bearers = session_allowed_bearers_any();
1130
1131                                 if (allowed_bearers == NULL)
1132                                         return __connman_error_failed(msg, ENOMEM);
1133                         }
1134
1135                         info->allowed_bearers = allowed_bearers;
1136
1137                         update_allowed_bearers(session);
1138                 } else {
1139                         goto err;
1140                 }
1141                 break;
1142         case DBUS_TYPE_BOOLEAN:
1143                 if (g_str_equal(name, "Priority") == TRUE) {
1144                         dbus_message_iter_get_basic(&value,
1145                                         &info->priority);
1146
1147                         if (info_last->priority != info->priority)
1148                                 session->info_dirty = TRUE;
1149                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1150                         dbus_message_iter_get_basic(&value,
1151                                         &info->avoid_handover);
1152
1153                         if (info_last->avoid_handover != info->avoid_handover)
1154                                 session->info_dirty = TRUE;
1155                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1156                         dbus_message_iter_get_basic(&value,
1157                                         &info->stay_connected);
1158
1159                         if (info_last->stay_connected != info->stay_connected)
1160                                 session->info_dirty = TRUE;
1161                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1162                         dbus_message_iter_get_basic(&value,
1163                                         &info->ecall);
1164
1165                         update_ecall(session);
1166                 } else {
1167                         goto err;
1168                 }
1169                 break;
1170         case DBUS_TYPE_UINT32:
1171                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1172                         dbus_message_iter_get_basic(&value,
1173                                         &info->periodic_connect);
1174
1175                         if (info_last->periodic_connect != info->periodic_connect)
1176                                 session->info_dirty = TRUE;
1177                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1178                         dbus_message_iter_get_basic(&value,
1179                                         &info->idle_timeout);
1180
1181                         if (info_last->idle_timeout != info->idle_timeout)
1182                                 session->info_dirty = TRUE;
1183                 } else {
1184                         goto err;
1185                 }
1186                 break;
1187         case DBUS_TYPE_STRING:
1188                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1189                         const char *val;
1190                         dbus_message_iter_get_basic(&value, &val);
1191                         info->roaming_policy =
1192                                         string2roamingpolicy(val);
1193
1194                         if (info_last->roaming_policy != info->roaming_policy)
1195                                 session->info_dirty = TRUE;
1196                 } else {
1197                         goto err;
1198                 }
1199                 break;
1200         default:
1201                 goto err;
1202         }
1203
1204         if (session->info_dirty == TRUE)
1205                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1206
1207         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1208
1209 err:
1210         return __connman_error_invalid_arguments(msg);
1211 }
1212
1213 static GDBusMethodTable session_methods[] = {
1214         { "Destroy",    "",   "", destroy_session    },
1215         { "Connect",    "",   "", connect_session    },
1216         { "Disconnect", "",   "", disconnect_session },
1217         { "Change",     "sv", "", change_session     },
1218         { },
1219 };
1220
1221 int __connman_session_create(DBusMessage *msg)
1222 {
1223         const char *owner, *notify_path;
1224         char *session_path = NULL;
1225         DBusMessageIter iter, array;
1226         struct connman_session *session = NULL;
1227         struct session_info *info, *info_last;
1228
1229         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1230         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1231         enum connman_session_roaming_policy roaming_policy =
1232                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1233         GSList *allowed_bearers = NULL;
1234         unsigned int periodic_connect = 0;
1235         unsigned int idle_timeout = 0;
1236
1237         int err;
1238
1239         owner = dbus_message_get_sender(msg);
1240
1241         DBG("owner %s", owner);
1242
1243         if (ecall_session != NULL) {
1244                 /*
1245                  * If there is an emergency call already going on,
1246                  * ignore session creation attempt
1247                  */
1248                 err = -EBUSY;
1249                 goto err;
1250         }
1251
1252         dbus_message_iter_init(msg, &iter);
1253         dbus_message_iter_recurse(&iter, &array);
1254
1255         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1256                 DBusMessageIter entry, value;
1257                 const char *key, *val;
1258
1259                 dbus_message_iter_recurse(&array, &entry);
1260                 dbus_message_iter_get_basic(&entry, &key);
1261
1262                 dbus_message_iter_next(&entry);
1263                 dbus_message_iter_recurse(&entry, &value);
1264
1265                 switch (dbus_message_iter_get_arg_type(&value)) {
1266                 case DBUS_TYPE_ARRAY:
1267                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1268                                 allowed_bearers =
1269                                         session_parse_allowed_bearers(&value);
1270                         } else {
1271                                 return -EINVAL;
1272                         }
1273                         break;
1274                 case DBUS_TYPE_BOOLEAN:
1275                         if (g_str_equal(key, "Priority") == TRUE) {
1276                                 dbus_message_iter_get_basic(&value,
1277                                                         &priority);
1278                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1279                                 dbus_message_iter_get_basic(&value,
1280                                                         &avoid_handover);
1281                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1282                                 dbus_message_iter_get_basic(&value,
1283                                                         &stay_connected);
1284                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1285                                 dbus_message_iter_get_basic(&value,
1286                                                         &ecall);
1287                         } else {
1288                                 return -EINVAL;
1289                         }
1290                         break;
1291                 case DBUS_TYPE_UINT32:
1292                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1293                                 dbus_message_iter_get_basic(&value,
1294                                                         &periodic_connect);
1295                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1296                                 dbus_message_iter_get_basic(&value,
1297                                                         &idle_timeout);
1298                         } else {
1299                                 return -EINVAL;
1300                         }
1301                         break;
1302                 case DBUS_TYPE_STRING:
1303                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1304                                 dbus_message_iter_get_basic(&value, &val);
1305                                 roaming_policy = string2roamingpolicy(val);
1306                         } else {
1307                                 return -EINVAL;
1308                         }
1309                 }
1310                 dbus_message_iter_next(&array);
1311         }
1312
1313         dbus_message_iter_next(&iter);
1314         dbus_message_iter_get_basic(&iter, &notify_path);
1315
1316         if (notify_path == NULL) {
1317                 err = -EINVAL;
1318                 goto err;
1319         }
1320
1321         session_path = g_strdup_printf("/sessions%s", notify_path);
1322         if (session_path == NULL) {
1323                 err = -ENOMEM;
1324                 goto err;
1325         }
1326
1327         session = g_hash_table_lookup(session_hash, session_path);
1328         if (session != NULL) {
1329                 session = NULL;
1330                 err = -EEXIST;
1331                 goto err;
1332         }
1333
1334         session = g_try_new0(struct connman_session, 1);
1335         if (session == NULL) {
1336                 err = -ENOMEM;
1337                 goto err;
1338         }
1339
1340         session->info = g_try_new0(struct session_info, 1);
1341         if (session->info == NULL) {
1342                 err = -ENOMEM;
1343                 goto err;
1344         }
1345
1346         session->info_last = g_try_new0(struct session_info, 1);
1347         if (session->info_last == NULL) {
1348                 err = -ENOMEM;
1349                 goto err;
1350         }
1351
1352         info = session->info;
1353         info_last = session->info_last;
1354
1355         session->owner = g_strdup(owner);
1356         session->session_path = session_path;
1357         session->notify_path = g_strdup(notify_path);
1358         session->notify_watch =
1359                 g_dbus_add_disconnect_watch(connection, session->owner,
1360                                         owner_disconnect, session, NULL);
1361
1362         session->service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1363                                                 NULL, NULL);
1364
1365         info->online = FALSE;
1366         info->priority = priority;
1367         info->avoid_handover = avoid_handover;
1368         info->stay_connected = stay_connected;
1369         info->periodic_connect = periodic_connect;
1370         info->idle_timeout = idle_timeout;
1371         info->ecall = ecall;
1372         info->roaming_policy = roaming_policy;
1373         info->entry = NULL;
1374         info->marker = 0;
1375
1376         if (allowed_bearers == NULL) {
1377                 info->allowed_bearers =
1378                                 session_allowed_bearers_any();
1379
1380                 if (info->allowed_bearers == NULL) {
1381                         err = -ENOMEM;
1382                         goto err;
1383                 }
1384         } else {
1385                 info->allowed_bearers = allowed_bearers;
1386         }
1387
1388         g_hash_table_replace(session_hash, session->session_path, session);
1389
1390         DBG("add %s", session->session_path);
1391
1392         if (g_dbus_register_interface(connection, session->session_path,
1393                                         CONNMAN_SESSION_INTERFACE,
1394                                         session_methods, NULL,
1395                                         NULL, session, NULL) == FALSE) {
1396                 connman_error("Failed to register %s", session->session_path);
1397                 g_hash_table_remove(session_hash, session->session_path);
1398                 session = NULL;
1399
1400                 err = -EINVAL;
1401                 goto err;
1402         }
1403
1404         g_dbus_send_reply(connection, msg,
1405                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1406                                 DBUS_TYPE_INVALID);
1407
1408
1409         update_allowed_bearers(session);
1410         if (info->ecall == TRUE) {
1411                 ecall_session = session;
1412                 update_ecall_sessions(session);
1413         }
1414
1415         info_last->online = info->online;
1416         info_last->priority = info->priority;
1417         info_last->avoid_handover = info->avoid_handover;
1418         info_last->stay_connected = info->stay_connected;
1419         info_last->periodic_connect = info->periodic_connect;
1420         info_last->idle_timeout = info->idle_timeout;
1421         info_last->ecall = info->ecall;
1422         info_last->roaming_policy = info->roaming_policy;
1423         info_last->entry = info->entry;
1424         info_last->marker = info->marker;
1425         info_last->allowed_bearers = info->allowed_bearers;
1426
1427         session->info_dirty = TRUE;
1428         session->append_all = TRUE;
1429
1430         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1431
1432         return 0;
1433
1434 err:
1435         connman_error("Failed to create session");
1436
1437         if (session != NULL) {
1438                 if (session->info_last != NULL)
1439                         g_free(session->info_last);
1440                 if (session->info != NULL)
1441                         g_free(session->info);
1442                 g_free(session);
1443         }
1444
1445         g_free(session_path);
1446
1447         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1448         g_slist_free(allowed_bearers);
1449
1450         return err;
1451 }
1452
1453 int __connman_session_destroy(DBusMessage *msg)
1454 {
1455         const char *owner, *session_path;
1456         struct connman_session *session;
1457
1458         owner = dbus_message_get_sender(msg);
1459
1460         DBG("owner %s", owner);
1461
1462         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1463                                                         DBUS_TYPE_INVALID);
1464         if (session_path == NULL)
1465                 return -EINVAL;
1466
1467         session = g_hash_table_lookup(session_hash, session_path);
1468         if (session == NULL)
1469                 return -EINVAL;
1470
1471         if (g_strcmp0(owner, session->owner) != 0)
1472                 return -EACCES;
1473
1474         session_disconnect(session);
1475
1476         return 0;
1477 }
1478
1479 connman_bool_t __connman_session_mode()
1480 {
1481         return sessionmode;
1482 }
1483
1484 void __connman_session_set_mode(connman_bool_t enable)
1485 {
1486         DBG("enable %d", enable);
1487
1488         if (sessionmode == enable)
1489                 return;
1490
1491         sessionmode = enable;
1492
1493         if (sessionmode == TRUE)
1494                 __connman_service_disconnect_all();
1495 }
1496
1497 static void service_add(struct connman_service *service)
1498 {
1499         GHashTableIter iter;
1500         GSequenceIter *iter_service_list;
1501         gpointer key, value;
1502         struct connman_session *session;
1503
1504         DBG("service %p", service);
1505
1506         g_hash_table_iter_init(&iter, session_hash);
1507
1508         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1509                 session = value;
1510
1511                 if (service_match(session, service) == FALSE)
1512                         continue;
1513
1514                 iter_service_list =
1515                         g_sequence_insert_sorted(session->service_list,
1516                                                         service, sort_services,
1517                                                         session);
1518
1519                 g_hash_table_replace(session->service_hash, service,
1520                                         iter_service_list);
1521
1522                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1523         }
1524 }
1525
1526 static void service_remove(struct connman_service *service)
1527 {
1528
1529         GHashTableIter iter;
1530         gpointer key, value;
1531         struct connman_session *session;
1532         struct session_info *info;
1533
1534         DBG("service %p", service);
1535
1536         g_hash_table_iter_init(&iter, session_hash);
1537
1538         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1539                 GSequenceIter *iter;
1540                 session = value;
1541                 info = session->info;
1542
1543                 iter = g_hash_table_lookup(session->service_hash, service);
1544                 if (iter == NULL)
1545                         continue;
1546
1547                 g_sequence_remove(iter);
1548
1549                 info->entry = NULL;
1550                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1551         }
1552 }
1553
1554 static void service_state_changed(struct connman_service *service,
1555                                         enum connman_service_state state)
1556 {
1557         GHashTableIter iter;
1558         gpointer key, value;
1559         struct connman_session *session;
1560         struct session_info *info, *info_last;
1561
1562         DBG("service %p state %d", service, state);
1563
1564         g_hash_table_iter_init(&iter, session_hash);
1565
1566         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1567                 session = value;
1568                 info = session->info;
1569                 info_last = session->info_last;
1570
1571                 if (info->entry != NULL && info->entry->service == service) {
1572                         info->entry->state = state;
1573                         info->online = is_connected(info->entry->state);
1574                         if (info_last->online != info->online)
1575                                 session->info_dirty = TRUE;
1576                 }
1577
1578                 session_changed(session,
1579                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1580         }
1581 }
1582
1583 static void ipconfig_changed(struct connman_service *service,
1584                                 struct connman_ipconfig *ipconfig)
1585 {
1586         GHashTableIter iter;
1587         gpointer key, value;
1588         struct connman_session *session;
1589         struct session_info *info;
1590         enum connman_ipconfig_type type;
1591
1592         DBG("service %p ipconfig %p", service, ipconfig);
1593
1594         type = __connman_ipconfig_get_config_type(ipconfig);
1595
1596         g_hash_table_iter_init(&iter, session_hash);
1597
1598         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1599                 session = value;
1600                 info = session->info;
1601
1602                 if (info->entry != NULL && info->entry->service == service) {
1603                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1604                                 ipconfig_ipv4_changed(session);
1605                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1606                                 ipconfig_ipv6_changed(session);
1607                 }
1608         }
1609 }
1610
1611 static struct connman_notifier session_notifier = {
1612         .name                   = "session",
1613         .service_add            = service_add,
1614         .service_remove         = service_remove,
1615         .service_state_changed  = service_state_changed,
1616         .ipconfig_changed       = ipconfig_changed,
1617 };
1618
1619 int __connman_session_init(void)
1620 {
1621         int err;
1622
1623         DBG("");
1624
1625         connection = connman_dbus_get_connection();
1626         if (connection == NULL)
1627                 return -1;
1628
1629         err = connman_notifier_register(&session_notifier);
1630         if (err < 0) {
1631                 dbus_connection_unref(connection);
1632                 return err;
1633         }
1634
1635         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1636                                                 NULL, cleanup_session);
1637
1638         sessionmode = FALSE;
1639         return 0;
1640 }
1641
1642 void __connman_session_cleanup(void)
1643 {
1644         DBG("");
1645
1646         if (connection == NULL)
1647                 return;
1648
1649         connman_notifier_unregister(&session_notifier);
1650
1651         g_hash_table_foreach(session_hash, release_session, NULL);
1652         g_hash_table_destroy(session_hash);
1653
1654         dbus_connection_unref(connection);
1655 }