src/session.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2011  BWM CarIT GmbH. All rights reserved.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <gdbus.h>
  28
  29 #include "connman.h"
  30
  31 static DBusConnection *connection;
  32 static GHashTable *session_hash;
  33 static connman_bool_t sessionmode;
  34 static struct connman_session *ecall_session;
  35
  36 enum connman_session_trigger {
  37         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  38         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  39         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  40         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  41         CONNMAN_SESSION_TRIGGER_PERIODIC        = 4,
  42         CONNMAN_SESSION_TRIGGER_SERVICE         = 5,
  43         CONNMAN_SESSION_TRIGGER_ECALL           = 6,
  44 };
  45
  46 enum connman_session_reason {
  47         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  48         CONNMAN_SESSION_REASON_CONNECT          = 1,
  49         CONNMAN_SESSION_REASON_FREE_RIDE        = 2,
  50         CONNMAN_SESSION_REASON_PERIODIC         = 3,
  51 };
  52
  53 enum connman_session_roaming_policy {
  54         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  55         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  56         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  57         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  58         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  59         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  60 };
  61
  62 struct service_entry {
  63         /* track why this service was selected */
  64         enum connman_session_reason reason;
  65         enum connman_service_state state;
  66         const char *name;
  67         struct connman_service *service;
  68         const char *ifname;
  69         const char *bearer;
  70 };
  71
  72 struct session_info {
  73         connman_bool_t online;
  74         connman_bool_t priority;
  75         GSList *allowed_bearers;
  76         connman_bool_t avoid_handover;
  77         connman_bool_t stay_connected;
  78         unsigned int periodic_connect;
  79         unsigned int idle_timeout;
  80         connman_bool_t ecall;
  81         enum connman_session_roaming_policy roaming_policy;
  82         unsigned int marker;
  83
  84         struct service_entry *entry;
  85 };
  86
  87 struct connman_session {
  88         char *owner;
  89         char *session_path;
  90         char *notify_path;
  91         guint notify_watch;
  92
  93         connman_bool_t append_all;
  94         connman_bool_t info_dirty;
  95         struct session_info *info;
  96         struct session_info *info_last;
  97
  98         GSequence *service_list;
  99         GHashTable *service_hash;
 100 };
 101
 102 struct bearer_info {
 103         char *name;
 104         connman_bool_t match_all;
 105         enum connman_service_type service_type;
 106 };
 107
 108 static const char *trigger2string(enum connman_session_trigger trigger)
 109 {
 110         switch (trigger) {
 111         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 112                 break;
 113         case CONNMAN_SESSION_TRIGGER_SETTING:
 114                 return "setting";
 115         case CONNMAN_SESSION_TRIGGER_CONNECT:
 116                 return "connect";
 117         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 118                 return "disconnect";
 119         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 120                 return "periodic";
 121         case CONNMAN_SESSION_TRIGGER_SERVICE:
 122                 return "service";
 123         case CONNMAN_SESSION_TRIGGER_ECALL:
 124                 return "ecall";
 125         }
 126
 127         return NULL;
 128 }
 129
 130 static const char *reason2string(enum connman_session_reason reason)
 131 {
 132         switch (reason) {
 133         case CONNMAN_SESSION_REASON_UNKNOWN:
 134                 break;
 135         case CONNMAN_SESSION_REASON_CONNECT:
 136                 return "connect";
 137         case CONNMAN_SESSION_REASON_FREE_RIDE:
 138                 return "free-ride";
 139         case CONNMAN_SESSION_REASON_PERIODIC:
 140                 return "periodic";
 141         }
 142
 143         return NULL;
 144 }
 145
 146 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 147 {
 148         switch (policy) {
 149         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 150                 return "unknown";
 151         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 152                 return "default";
 153         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 154                 return "always";
 155         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 156                 return "forbidden";
 157         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 158                 return "national";
 159         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 160                 return "international";
 161         }
 162
 163         return NULL;
 164 }
 165
 166 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 167 {
 168         if (g_strcmp0(policy, "default") == 0)
 169                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 170         else if (g_strcmp0(policy, "always") == 0)
 171                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 172         else if (g_strcmp0(policy, "forbidden") == 0)
 173                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 174         else if (g_strcmp0(policy, "national") == 0)
 175                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 176         else if (g_strcmp0(policy, "international") == 0)
 177                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 178         else
 179                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 180 }
 181
 182 static enum connman_service_type bearer2service(const char *bearer)
 183 {
 184         if (bearer == NULL)
 185                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 186
 187         if (g_strcmp0(bearer, "ethernet") == 0)
 188                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 189         else if (g_strcmp0(bearer, "wifi") == 0)
 190                 return CONNMAN_SERVICE_TYPE_WIFI;
 191         else if (g_strcmp0(bearer, "wimax") == 0)
 192                 return CONNMAN_SERVICE_TYPE_WIMAX;
 193         else if (g_strcmp0(bearer, "bluetooth") == 0)
 194                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 195         else if (g_strcmp0(bearer, "3g") == 0)
 196                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 197         else
 198                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 199 }
 200
 201 static char *service2bearer(enum connman_service_type type)
 202 {
 203         switch (type) {
 204         case CONNMAN_SERVICE_TYPE_ETHERNET:
 205                 return "ethernet";
 206         case CONNMAN_SERVICE_TYPE_WIFI:
 207                 return "wifi";
 208         case CONNMAN_SERVICE_TYPE_WIMAX:
 209                 return "wimax";
 210         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 211                 return "bluetooth";
 212         case CONNMAN_SERVICE_TYPE_CELLULAR:
 213                 return "3g";
 214         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 215         case CONNMAN_SERVICE_TYPE_SYSTEM:
 216         case CONNMAN_SERVICE_TYPE_GPS:
 217         case CONNMAN_SERVICE_TYPE_VPN:
 218         case CONNMAN_SERVICE_TYPE_GADGET:
 219                 return "";
 220         }
 221
 222         return "";
 223 }
 224
 225 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 226 {
 227         struct bearer_info *info = data;
 228
 229         g_free(info->name);
 230         g_free(info);
 231 }
 232
 233 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 234 {
 235         struct bearer_info *info;
 236         DBusMessageIter array;
 237         GSList *list = NULL;
 238
 239         dbus_message_iter_recurse(iter, &array);
 240
 241         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 242                 char *bearer = NULL;
 243
 244                 dbus_message_iter_get_basic(&array, &bearer);
 245
 246                 info = g_try_new0(struct bearer_info, 1);
 247                 if (info == NULL) {
 248                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 249                         g_slist_free(list);
 250
 251                         return NULL;
 252                 }
 253
 254                 info->name = g_strdup(bearer);
 255                 info->service_type = bearer2service(info->name);
 256
 257                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 258                                 g_strcmp0(info->name, "*") == 0) {
 259                         info->match_all = TRUE;
 260                 } else {
 261                         info->match_all = FALSE;
 262                 }
 263
 264                 list = g_slist_append(list, info);
 265
 266                 dbus_message_iter_next(&array);
 267         }
 268
 269         return list;
 270 }
 271
 272 static GSList *session_allowed_bearers_any(void)
 273 {
 274         struct bearer_info *info;
 275         GSList *list = NULL;
 276
 277         info = g_try_new0(struct bearer_info, 1);
 278         if (info == NULL) {
 279                 g_slist_free(list);
 280
 281                 return NULL;
 282         }
 283
 284         info->name = g_strdup("");
 285         info->match_all = TRUE;
 286         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 287
 288         list = g_slist_append(list, info);
 289
 290         return list;
 291 }
 292
 293 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 294 {
 295         struct session_info *info = user_data;
 296         GSList *list;
 297
 298         for (list = info->allowed_bearers;
 299                         list != NULL; list = list->next) {
 300                 struct bearer_info *info = list->data;
 301
 302                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 303                                                 &info->name);
 304         }
 305 }
 306
 307 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 308 {
 309         struct connman_service *service = user_data;
 310         struct connman_ipconfig *ipconfig_ipv4;
 311
 312         if (service == NULL)
 313                 return;
 314
 315         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 316         if (ipconfig_ipv4 == NULL)
 317                 return;
 318
 319         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 320 }
 321
 322 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 323 {
 324         struct connman_service *service = user_data;
 325         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 326
 327         if (service == NULL)
 328                 return;
 329
 330         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 331         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 332         if (ipconfig_ipv6 == NULL)
 333                 return;
 334
 335         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 336 }
 337
 338 static void append_notify(DBusMessageIter *dict,
 339                                         struct connman_session *session)
 340 {
 341         struct session_info *info = session->info;
 342         struct session_info *info_last = session->info_last;
 343         const char *policy;
 344         struct connman_service *service;
 345         const char *name, *ifname, *bearer;
 346
 347         if (session->append_all == TRUE ||
 348                         info->online != info_last->online) {
 349                 connman_dbus_dict_append_basic(dict, "Online",
 350                                                 DBUS_TYPE_BOOLEAN,
 351                                                 &info->online);
 352                 info_last->online = info->online;
 353         }
 354
 355         if (session->append_all == TRUE ||
 356                         info->entry != info_last->entry) {
 357                 if (info->entry == NULL) {
 358                         name = "";
 359                         ifname = "";
 360                         service = NULL;
 361                         bearer = "";
 362                 } else {
 363                         name = info->entry->name;
 364                         ifname = info->entry->ifname;
 365                         service = info->entry->service;
 366                         bearer = info->entry->bearer;
 367                 }
 368
 369                 connman_dbus_dict_append_basic(dict, "Name",
 370                                                 DBUS_TYPE_STRING,
 371                                                 &name);
 372
 373                 connman_dbus_dict_append_dict(dict, "IPv4",
 374                                                 append_ipconfig_ipv4,
 375                                                 service);
 376
 377                 connman_dbus_dict_append_dict(dict, "IPv6",
 378                                                 append_ipconfig_ipv6,
 379                                                 service);
 380
 381                 connman_dbus_dict_append_basic(dict, "Interface",
 382                                                 DBUS_TYPE_STRING,
 383                                                 &ifname);
 384
 385                 connman_dbus_dict_append_basic(dict, "Bearer",
 386                                                 DBUS_TYPE_STRING,
 387                                                 &bearer);
 388
 389                 info_last->entry = info->entry;
 390         }
 391
 392
 393         if (session->append_all == TRUE ||
 394                         info->priority != info_last->priority) {
 395                 connman_dbus_dict_append_basic(dict, "Priority",
 396                                                 DBUS_TYPE_BOOLEAN,
 397                                                 &info->priority);
 398                 info_last->priority = info->priority;
 399         }
 400
 401         if (session->append_all == TRUE ||
 402                         info->allowed_bearers != info_last->allowed_bearers) {
 403                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 404                                                 DBUS_TYPE_STRING,
 405                                                 append_allowed_bearers,
 406                                                 info);
 407                 info_last->allowed_bearers = info->allowed_bearers;
 408         }
 409
 410         if (session->append_all == TRUE ||
 411                         info->avoid_handover != info_last->avoid_handover) {
 412                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 413                                                 DBUS_TYPE_BOOLEAN,
 414                                                 &info->avoid_handover);
 415                 info_last->avoid_handover = info->avoid_handover;
 416         }
 417
 418         if (session->append_all == TRUE ||
 419                         info->stay_connected != info_last->stay_connected) {
 420                 connman_dbus_dict_append_basic(dict, "StayConnected",
 421                                                 DBUS_TYPE_BOOLEAN,
 422                                                 &info->stay_connected);
 423                 info_last->stay_connected = info->stay_connected;
 424         }
 425
 426         if (session->append_all == TRUE ||
 427                         info->periodic_connect != info_last->periodic_connect) {
 428                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 429                                                 DBUS_TYPE_UINT32,
 430                                                 &info->periodic_connect);
 431                 info_last->periodic_connect = info->periodic_connect;
 432         }
 433
 434         if (session->append_all == TRUE ||
 435                         info->idle_timeout != info_last->idle_timeout) {
 436                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 437                                                 DBUS_TYPE_UINT32,
 438                                                 &info->idle_timeout);
 439                 info_last->idle_timeout = info->idle_timeout;
 440         }
 441
 442         if (session->append_all == TRUE ||
 443                         info->ecall != info_last->ecall) {
 444                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 445                                                 DBUS_TYPE_BOOLEAN,
 446                                                 &info->ecall);
 447                 info_last->ecall = info->ecall;
 448         }
 449
 450         if (session->append_all == TRUE ||
 451                         info->roaming_policy != info_last->roaming_policy) {
 452                 policy = roamingpolicy2string(info->roaming_policy);
 453                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 454                                                 DBUS_TYPE_STRING,
 455                                                 &policy);
 456                 info_last->roaming_policy = info->roaming_policy;
 457         }
 458
 459         if (session->append_all == TRUE ||
 460                         info->marker != info_last->marker) {
 461                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 462                                                 DBUS_TYPE_UINT32,
 463                                                 &info->marker);
 464                 info_last->marker = info->marker;
 465         }
 466
 467         session->append_all = FALSE;
 468         session->info_dirty = FALSE;
 469 }
 470
 471 static gboolean session_notify(gpointer user_data)
 472 {
 473         struct connman_session *session = user_data;
 474         DBusMessage *msg;
 475         DBusMessageIter array, dict;
 476
 477         if (session->info_dirty == FALSE)
 478                 return 0;
 479
 480         DBG("session %p owner %s notify_path %s", session,
 481                 session->owner, session->notify_path);
 482
 483         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 484                                                 CONNMAN_NOTIFICATION_INTERFACE,
 485                                                 "Update");
 486         if (msg == NULL)
 487                 return FALSE;
 488
 489         dbus_message_iter_init_append(msg, &array);
 490         connman_dbus_dict_open(&array, &dict);
 491
 492         append_notify(&dict, session);
 493
 494         connman_dbus_dict_close(&array, &dict);
 495
 496         g_dbus_send_message(connection, msg);
 497
 498         session->info_dirty = FALSE;
 499
 500         return FALSE;
 501 }
 502
 503 static void ipconfig_ipv4_changed(struct connman_session *session)
 504 {
 505         struct session_info *info = session->info;
 506
 507         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 508                                                 "IPv4", append_ipconfig_ipv4,
 509                                                 info->entry->service);
 510 }
 511
 512 static void ipconfig_ipv6_changed(struct connman_session *session)
 513 {
 514         struct session_info *info = session->info;
 515
 516         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 517                                                 "IPv6", append_ipconfig_ipv6,
 518                                                 info->entry->service);
 519 }
 520
 521 static connman_bool_t service_type_match(struct connman_session *session,
 522                                         struct connman_service *service)
 523 {
 524         struct session_info *info = session->info;
 525         GSList *list;
 526
 527         for (list = info->allowed_bearers;
 528                         list != NULL; list = list->next) {
 529                 struct bearer_info *info = list->data;
 530                 enum connman_service_type service_type;
 531
 532                 if (info->match_all == TRUE)
 533                         return TRUE;
 534
 535                 service_type = connman_service_get_type(service);
 536                 if (info->service_type == service_type)
 537                         return TRUE;
 538         }
 539
 540         return FALSE;
 541 }
 542
 543 static connman_bool_t service_match(struct connman_session *session,
 544                                         struct connman_service *service)
 545 {
 546         if (service_type_match(session, service) == FALSE)
 547                 return FALSE;
 548
 549         return TRUE;
 550 }
 551
 552 static int service_type_weight(enum connman_service_type type)
 553 {
 554         /*
 555          * The session doesn't care which service
 556          * to use. Nevertheless we have to sort them
 557          * according their type. The ordering is
 558          *
 559          * 1. Ethernet
 560          * 2. Bluetooth
 561          * 3. WiFi/WiMAX
 562          * 4. GSM/UTMS/3G
 563          */
 564
 565         switch (type) {
 566         case CONNMAN_SERVICE_TYPE_ETHERNET:
 567                 return 4;
 568         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 569                 return 3;
 570         case CONNMAN_SERVICE_TYPE_WIFI:
 571         case CONNMAN_SERVICE_TYPE_WIMAX:
 572                 return 2;
 573         case CONNMAN_SERVICE_TYPE_CELLULAR:
 574                 return 1;
 575         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 576         case CONNMAN_SERVICE_TYPE_SYSTEM:
 577         case CONNMAN_SERVICE_TYPE_GPS:
 578         case CONNMAN_SERVICE_TYPE_VPN:
 579         case CONNMAN_SERVICE_TYPE_GADGET:
 580                 break;
 581         }
 582
 583         return 0;
 584 }
 585
 586 static gint sort_allowed_bearers(struct connman_service *service_a,
 587                                         struct connman_service *service_b,
 588                                         struct connman_session *session)
 589 {
 590         struct session_info *info = session->info;
 591         GSList *list;
 592         enum connman_service_type type_a, type_b;
 593         int weight_a, weight_b;
 594
 595         type_a = connman_service_get_type(service_a);
 596         type_b = connman_service_get_type(service_b);
 597
 598         for (list = info->allowed_bearers;
 599                         list != NULL; list = list->next) {
 600                 struct bearer_info *info = list->data;
 601
 602                 if (info->match_all == TRUE) {
 603                         if (type_a != type_b) {
 604                                 weight_a = service_type_weight(type_a);
 605                                 weight_b = service_type_weight(type_b);
 606
 607                                 if (weight_a > weight_b)
 608                                         return -1;
 609
 610                                 if (weight_a < weight_b)
 611                                         return 1;
 612
 613                                 return 0;
 614                         }
 615                 }
 616
 617                 if (type_a == info->service_type &&
 618                                 type_b == info->service_type) {
 619                         return 0;
 620                 }
 621
 622                 if (type_a == info->service_type &&
 623                                 type_b != info->service_type) {
 624                         return -1;
 625                 }
 626
 627                 if (type_a != info->service_type &&
 628                                 type_b == info->service_type) {
 629                         return 1;
 630                 }
 631         }
 632
 633         return 0;
 634 }
 635
 636 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 637 {
 638         struct connman_service *service_a = (void *)a;
 639         struct connman_service *service_b = (void *)b;
 640         struct connman_session *session = user_data;
 641
 642         return sort_allowed_bearers(service_a, service_b, session);
 643 }
 644
 645 static void cleanup_session(gpointer user_data)
 646 {
 647         struct connman_session *session = user_data;
 648         struct session_info *info = session->info;
 649
 650         DBG("remove %s", session->session_path);
 651
 652         g_hash_table_destroy(session->service_hash);
 653         g_sequence_free(session->service_list);
 654
 655         if (info->entry != NULL &&
 656                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 657                 __connman_service_disconnect(info->entry->service);
 658         }
 659
 660         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 661         g_slist_free(info->allowed_bearers);
 662
 663         g_free(session->owner);
 664         g_free(session->session_path);
 665         g_free(session->notify_path);
 666         g_free(session->info);
 667         g_free(session->info_last);
 668
 669         g_free(session);
 670 }
 671
 672 static void release_session(gpointer key, gpointer value, gpointer user_data)
 673 {
 674         struct connman_session *session = value;
 675         DBusMessage *message;
 676
 677         DBG("owner %s path %s", session->owner, session->notify_path);
 678
 679         if (session->notify_watch > 0)
 680                 g_dbus_remove_watch(connection, session->notify_watch);
 681
 682         g_dbus_unregister_interface(connection, session->session_path,
 683                                                 CONNMAN_SESSION_INTERFACE);
 684
 685         message = dbus_message_new_method_call(session->owner,
 686                                                 session->notify_path,
 687                                                 CONNMAN_NOTIFICATION_INTERFACE,
 688                                                 "Release");
 689         if (message == NULL)
 690                 return;
 691
 692         dbus_message_set_no_reply(message, TRUE);
 693
 694         g_dbus_send_message(connection, message);
 695 }
 696
 697 static int session_disconnect(struct connman_session *session)
 698 {
 699         DBG("session %p, %s", session, session->owner);
 700
 701         if (session->notify_watch > 0)
 702                 g_dbus_remove_watch(connection, session->notify_watch);
 703
 704         g_dbus_unregister_interface(connection, session->session_path,
 705                                                 CONNMAN_SESSION_INTERFACE);
 706
 707         g_hash_table_remove(session_hash, session->session_path);
 708
 709         return 0;
 710 }
 711
 712 static void owner_disconnect(DBusConnection *conn, void *user_data)
 713 {
 714         struct connman_session *session = user_data;
 715
 716         DBG("session %p, %s died", session, session->owner);
 717
 718         session_disconnect(session);
 719 }
 720
 721 static DBusMessage *destroy_session(DBusConnection *conn,
 722                                         DBusMessage *msg, void *user_data)
 723 {
 724         struct connman_session *session = user_data;
 725
 726         DBG("session %p", session);
 727
 728         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 729 }
 730
 731 static connman_bool_t is_connected(enum connman_service_state state)
 732 {
 733         switch (state) {
 734         case CONNMAN_SERVICE_STATE_UNKNOWN:
 735         case CONNMAN_SERVICE_STATE_IDLE:
 736         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 737         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 738         case CONNMAN_SERVICE_STATE_DISCONNECT:
 739         case CONNMAN_SERVICE_STATE_FAILURE:
 740                 break;
 741         case CONNMAN_SERVICE_STATE_READY:
 742         case CONNMAN_SERVICE_STATE_ONLINE:
 743                 return TRUE;
 744         }
 745
 746         return FALSE;
 747 }
 748
 749 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 750 {
 751         switch (reason) {
 752         case CONNMAN_SESSION_REASON_UNKNOWN:
 753         case CONNMAN_SESSION_REASON_FREE_RIDE:
 754                 break;
 755         case CONNMAN_SESSION_REASON_CONNECT:
 756         case CONNMAN_SESSION_REASON_PERIODIC:
 757                 return TRUE;
 758         }
 759
 760         return FALSE;
 761 }
 762
 763 static void test_and_disconnect(struct connman_session *session)
 764 {
 765         struct session_info *info = session->info;
 766
 767         if (info->entry == NULL)
 768                 return;
 769
 770         DBG("session %p reason %s service %p state %d",
 771                 session, reason2string(info->entry->reason),
 772                 info->entry->service, info->entry->state);
 773
 774         if (explicit_connect(info->entry->reason) == FALSE)
 775                 goto out;
 776
 777         if (__connman_service_session_dec(info->entry->service) == TRUE)
 778                 goto out;
 779
 780         if (ecall_session != NULL && ecall_session != session)
 781                 goto out;
 782
 783         __connman_service_disconnect(info->entry->service);
 784
 785         /*
 786          * TODO: We should mark this entry as pending work. In case
 787          * disconnect fails we just unassign this session from the
 788          * service and can't do anything later on it
 789          */
 790
 791 out:
 792         info->online = FALSE;
 793         info->entry = NULL;
 794 }
 795
 796 static void select_and_connect(struct connman_session *session,
 797                                 enum connman_session_reason reason)
 798 {
 799         struct session_info *info = session->info;
 800         struct service_entry *entry = NULL;
 801         GSequenceIter *iter;
 802         connman_bool_t do_connect = FALSE;
 803
 804         DBG("session %p reason %s", session, reason2string(reason));
 805
 806         iter = g_sequence_get_begin_iter(session->service_list);
 807
 808         while (g_sequence_iter_is_end(iter) == FALSE) {
 809                 entry = g_sequence_get(iter);
 810
 811                 switch (entry->state) {
 812                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 813                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 814                 case CONNMAN_SERVICE_STATE_READY:
 815                 case CONNMAN_SERVICE_STATE_ONLINE:
 816                         /* connecting or connected */
 817                         break;
 818                 case CONNMAN_SERVICE_STATE_IDLE:
 819                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 820                         if (explicit_connect(reason) == TRUE)
 821                                 do_connect = TRUE;
 822                         break;
 823                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 824                 case CONNMAN_SERVICE_STATE_FAILURE:
 825                         entry = NULL;
 826                         break;
 827                 }
 828
 829                 if (entry != NULL)
 830                         break;
 831
 832                 iter = g_sequence_iter_next(iter);
 833         }
 834
 835         if (info->entry != NULL && info->entry != entry)
 836                 test_and_disconnect(session);
 837
 838         if (entry != NULL) {
 839                 info->entry = entry;
 840                 info->entry->reason = reason;
 841
 842                 if (explicit_connect(reason) == TRUE)
 843                         __connman_service_session_inc(info->entry->service);
 844
 845                 if (do_connect == TRUE)
 846                         __connman_service_connect(info->entry->service);
 847                 else
 848                         info->online = is_connected(entry->state);
 849         }
 850 }
 851
 852 static void session_changed(struct connman_session *session,
 853                                 enum connman_session_trigger trigger)
 854 {
 855         struct session_info *info = session->info;
 856         struct session_info *info_last = session->info_last;
 857         GSequenceIter *iter;
 858
 859         /*
 860          * TODO: This only a placeholder for the 'real' algorithm to
 861          * play a bit around. So we are going to improve it step by step.
 862          */
 863
 864         DBG("session %p trigger %s", session, trigger2string(trigger));
 865
 866         switch (trigger) {
 867         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 868                 DBG("ignore session changed event");
 869                 return;
 870         case CONNMAN_SESSION_TRIGGER_SETTING:
 871                 if (info->entry != NULL) {
 872                         iter = g_hash_table_lookup(session->service_hash,
 873                                                         info->entry->service);
 874                         if (iter == NULL) {
 875                                 /*
 876                                  * This service is not part of this
 877                                  * session anymore.
 878                                  */
 879                                 test_and_disconnect(session);
 880                         }
 881                 }
 882
 883                 if (info->online == FALSE) {
 884                         select_and_connect(session,
 885                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 886                 }
 887
 888                 break;
 889         case CONNMAN_SESSION_TRIGGER_CONNECT:
 890                 if (info->online == TRUE) {
 891                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 892                         __connman_service_session_inc(info->entry->service);
 893                         break;
 894                 }
 895
 896                 select_and_connect(session,
 897                                 CONNMAN_SESSION_REASON_CONNECT);
 898
 899                 break;
 900         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 901                 test_and_disconnect(session);
 902
 903                 break;
 904         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 905                 if (info->online == TRUE) {
 906                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 907                         __connman_service_session_inc(info->entry->service);
 908                         break;
 909                 }
 910
 911                 select_and_connect(session,
 912                                 CONNMAN_SESSION_REASON_PERIODIC);
 913
 914                 break;
 915         case CONNMAN_SESSION_TRIGGER_SERVICE:
 916                 if (info->online == TRUE)
 917                         break;
 918
 919                 if (info->stay_connected == TRUE) {
 920                         DBG("StayConnected");
 921                         select_and_connect(session,
 922                                         CONNMAN_SESSION_REASON_CONNECT);
 923
 924                         break;
 925                 }
 926
 927                 select_and_connect(session,
 928                                 CONNMAN_SESSION_REASON_FREE_RIDE);
 929
 930                 break;
 931         case CONNMAN_SESSION_TRIGGER_ECALL:
 932                 if (info->online == FALSE && info->entry->service != NULL)
 933                         test_and_disconnect(session);
 934
 935                 break;
 936         }
 937
 938         if (info->entry != info_last->entry)
 939                 session->info_dirty = TRUE;
 940
 941         session_notify(session);
 942 }
 943
 944 static DBusMessage *connect_session(DBusConnection *conn,
 945                                         DBusMessage *msg, void *user_data)
 946 {
 947         struct connman_session *session = user_data;
 948
 949         DBG("session %p", session);
 950
 951         if (ecall_session != NULL && ecall_session != session)
 952                 return __connman_error_failed(msg, EBUSY);
 953
 954         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 955
 956         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 957 }
 958
 959 static DBusMessage *disconnect_session(DBusConnection *conn,
 960                                         DBusMessage *msg, void *user_data)
 961 {
 962         struct connman_session *session = user_data;
 963
 964         DBG("session %p", session);
 965
 966         if (ecall_session != NULL && ecall_session != session)
 967                 return __connman_error_failed(msg, EBUSY);
 968
 969         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 970
 971         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 972 }
 973
 974 static struct service_entry *create_service_entry(struct connman_service *service,
 975                                         const char *name,
 976                                         enum connman_service_state state)
 977 {
 978         struct service_entry *entry;
 979         enum connman_service_type type;
 980         int idx;
 981
 982         entry = g_try_new0(struct service_entry, 1);
 983         if (entry == NULL)
 984                 return entry;
 985
 986         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 987         entry->state = state;
 988         entry->name = name;
 989         entry->service = service;
 990
 991         idx = __connman_service_get_index(entry->service);
 992         entry->ifname = connman_inet_ifname(idx);
 993         if (entry->ifname == NULL)
 994                 entry->ifname = "";
 995
 996         type = connman_service_get_type(entry->service);
 997         entry->bearer = service2bearer(type);
 998
 999         return entry;
1000 }
1001
1002 static void destroy_service_entry(gpointer data)
1003 {
1004         struct service_entry *entry = data;
1005
1006         g_free(entry);
1007 }
1008
1009 static void update_allowed_bearers(struct connman_session *session)
1010 {
1011         struct service_entry *entry;
1012         GSequenceIter *iter;
1013
1014         if (session->service_list != NULL) {
1015                 g_hash_table_remove_all(session->service_hash);
1016                 g_sequence_free(session->service_list);
1017         }
1018
1019         session->service_list = __connman_service_get_list(session,
1020                                                         service_match,
1021                                                         create_service_entry,
1022                                                         destroy_service_entry);
1023
1024         g_sequence_sort(session->service_list, sort_services, session);
1025
1026         iter = g_sequence_get_begin_iter(session->service_list);
1027
1028         while (g_sequence_iter_is_end(iter) == FALSE) {
1029                 entry = g_sequence_get(iter);
1030
1031                 DBG("service %p type %s name %s", entry->service,
1032                         service2bearer(connman_service_get_type(entry->service)),
1033                         entry->name);
1034
1035                 g_hash_table_replace(session->service_hash,
1036                                         entry->service, iter);
1037
1038                 iter = g_sequence_iter_next(iter);
1039         }
1040
1041         session->info_dirty = TRUE;
1042 }
1043
1044 static void update_ecall_sessions(struct connman_session *session)
1045 {
1046         struct session_info *info = session->info;
1047         struct connman_session *session_iter;
1048         GHashTableIter iter;
1049         gpointer key, value;
1050
1051         g_hash_table_iter_init(&iter, session_hash);
1052
1053         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1054                 session_iter = value;
1055
1056                 if (session_iter == session)
1057                         continue;
1058
1059                 session_iter->info->ecall = info->ecall;
1060                 session_iter->info_dirty = TRUE;
1061
1062                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1063         }
1064 }
1065
1066 static void update_ecall(struct connman_session *session)
1067 {
1068         struct session_info *info = session->info;
1069         struct session_info *info_last = session->info_last;
1070
1071         DBG("session %p ecall_session %p ecall %d -> %d", session,
1072                 ecall_session, info_last->ecall, info->ecall);
1073
1074         if (ecall_session == NULL) {
1075                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1076                         goto err;
1077
1078                 ecall_session = session;
1079         } else if (ecall_session == session) {
1080                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1081                         goto err;
1082
1083                 ecall_session = NULL;
1084         } else {
1085                 goto err;
1086         }
1087
1088         update_ecall_sessions(session);
1089
1090         session->info_dirty = TRUE;
1091         return;
1092
1093 err:
1094         /* not a valid transition */
1095         info->ecall = info_last->ecall;
1096 }
1097
1098 static DBusMessage *change_session(DBusConnection *conn,
1099                                         DBusMessage *msg, void *user_data)
1100 {
1101         struct connman_session *session = user_data;
1102         struct session_info *info = session->info;
1103         struct session_info *info_last = session->info_last;
1104         DBusMessageIter iter, value;
1105         const char *name;
1106         GSList *allowed_bearers;
1107
1108         DBG("session %p", session);
1109         if (dbus_message_iter_init(msg, &iter) == FALSE)
1110                 return __connman_error_invalid_arguments(msg);
1111
1112         dbus_message_iter_get_basic(&iter, &name);
1113         dbus_message_iter_next(&iter);
1114         dbus_message_iter_recurse(&iter, &value);
1115
1116         switch (dbus_message_iter_get_arg_type(&value)) {
1117         case DBUS_TYPE_ARRAY:
1118                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1119                         allowed_bearers = session_parse_allowed_bearers(&value);
1120
1121                         g_slist_foreach(info->allowed_bearers,
1122                                         cleanup_bearer_info, NULL);
1123                         g_slist_free(info->allowed_bearers);
1124
1125                         if (allowed_bearers == NULL) {
1126                                 allowed_bearers = session_allowed_bearers_any();
1127
1128                                 if (allowed_bearers == NULL)
1129                                         return __connman_error_failed(msg, ENOMEM);
1130                         }
1131
1132                         info->allowed_bearers = allowed_bearers;
1133
1134                         update_allowed_bearers(session);
1135                 } else {
1136                         goto err;
1137                 }
1138                 break;
1139         case DBUS_TYPE_BOOLEAN:
1140                 if (g_str_equal(name, "Priority") == TRUE) {
1141                         dbus_message_iter_get_basic(&value,
1142                                         &info->priority);
1143
1144                         if (info_last->priority != info->priority)
1145                                 session->info_dirty = TRUE;
1146                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1147                         dbus_message_iter_get_basic(&value,
1148                                         &info->avoid_handover);
1149
1150                         if (info_last->avoid_handover != info->avoid_handover)
1151                                 session->info_dirty = TRUE;
1152                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1153                         dbus_message_iter_get_basic(&value,
1154                                         &info->stay_connected);
1155
1156                         if (info_last->stay_connected != info->stay_connected)
1157                                 session->info_dirty = TRUE;
1158                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1159                         dbus_message_iter_get_basic(&value,
1160                                         &info->ecall);
1161
1162                         update_ecall(session);
1163                 } else {
1164                         goto err;
1165                 }
1166                 break;
1167         case DBUS_TYPE_UINT32:
1168                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1169                         dbus_message_iter_get_basic(&value,
1170                                         &info->periodic_connect);
1171
1172                         if (info_last->periodic_connect != info->periodic_connect)
1173                                 session->info_dirty = TRUE;
1174                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1175                         dbus_message_iter_get_basic(&value,
1176                                         &info->idle_timeout);
1177
1178                         if (info_last->idle_timeout != info->idle_timeout)
1179                                 session->info_dirty = TRUE;
1180                 } else {
1181                         goto err;
1182                 }
1183                 break;
1184         case DBUS_TYPE_STRING:
1185                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1186                         const char *val;
1187                         dbus_message_iter_get_basic(&value, &val);
1188                         info->roaming_policy =
1189                                         string2roamingpolicy(val);
1190
1191                         if (info_last->roaming_policy != info->roaming_policy)
1192                                 session->info_dirty = TRUE;
1193                 } else {
1194                         goto err;
1195                 }
1196                 break;
1197         default:
1198                 goto err;
1199         }
1200
1201         if (session->info_dirty == TRUE)
1202                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1203
1204         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1205
1206 err:
1207         return __connman_error_invalid_arguments(msg);
1208 }
1209
1210 static GDBusMethodTable session_methods[] = {
1211         { "Destroy",    "",   "", destroy_session    },
1212         { "Connect",    "",   "", connect_session    },
1213         { "Disconnect", "",   "", disconnect_session },
1214         { "Change",     "sv", "", change_session     },
1215         { },
1216 };
1217
1218 int __connman_session_create(DBusMessage *msg)
1219 {
1220         const char *owner, *notify_path;
1221         char *session_path = NULL;
1222         DBusMessageIter iter, array;
1223         struct connman_session *session = NULL;
1224         struct session_info *info, *info_last;
1225
1226         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1227         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1228         enum connman_session_roaming_policy roaming_policy =
1229                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1230         GSList *allowed_bearers = NULL;
1231         unsigned int periodic_connect = 0;
1232         unsigned int idle_timeout = 0;
1233
1234         int err;
1235
1236         owner = dbus_message_get_sender(msg);
1237
1238         DBG("owner %s", owner);
1239
1240         if (ecall_session != NULL) {
1241                 /*
1242                  * If there is an emergency call already going on,
1243                  * ignore session creation attempt
1244                  */
1245                 err = -EBUSY;
1246                 goto err;
1247         }
1248
1249         dbus_message_iter_init(msg, &iter);
1250         dbus_message_iter_recurse(&iter, &array);
1251
1252         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1253                 DBusMessageIter entry, value;
1254                 const char *key, *val;
1255
1256                 dbus_message_iter_recurse(&array, &entry);
1257                 dbus_message_iter_get_basic(&entry, &key);
1258
1259                 dbus_message_iter_next(&entry);
1260                 dbus_message_iter_recurse(&entry, &value);
1261
1262                 switch (dbus_message_iter_get_arg_type(&value)) {
1263                 case DBUS_TYPE_ARRAY:
1264                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1265                                 allowed_bearers =
1266                                         session_parse_allowed_bearers(&value);
1267                         } else {
1268                                 return -EINVAL;
1269                         }
1270                         break;
1271                 case DBUS_TYPE_BOOLEAN:
1272                         if (g_str_equal(key, "Priority") == TRUE) {
1273                                 dbus_message_iter_get_basic(&value,
1274                                                         &priority);
1275                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1276                                 dbus_message_iter_get_basic(&value,
1277                                                         &avoid_handover);
1278                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1279                                 dbus_message_iter_get_basic(&value,
1280                                                         &stay_connected);
1281                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1282                                 dbus_message_iter_get_basic(&value,
1283                                                         &ecall);
1284                         } else {
1285                                 return -EINVAL;
1286                         }
1287                         break;
1288                 case DBUS_TYPE_UINT32:
1289                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1290                                 dbus_message_iter_get_basic(&value,
1291                                                         &periodic_connect);
1292                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1293                                 dbus_message_iter_get_basic(&value,
1294                                                         &idle_timeout);
1295                         } else {
1296                                 return -EINVAL;
1297                         }
1298                         break;
1299                 case DBUS_TYPE_STRING:
1300                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1301                                 dbus_message_iter_get_basic(&value, &val);
1302                                 roaming_policy = string2roamingpolicy(val);
1303                         } else {
1304                                 return -EINVAL;
1305                         }
1306                 }
1307                 dbus_message_iter_next(&array);
1308         }
1309
1310         dbus_message_iter_next(&iter);
1311         dbus_message_iter_get_basic(&iter, &notify_path);
1312
1313         if (notify_path == NULL) {
1314                 err = -EINVAL;
1315                 goto err;
1316         }
1317
1318         session_path = g_strdup_printf("/sessions%s", notify_path);
1319         if (session_path == NULL) {
1320                 err = -ENOMEM;
1321                 goto err;
1322         }
1323
1324         session = g_hash_table_lookup(session_hash, session_path);
1325         if (session != NULL) {
1326                 session = NULL;
1327                 err = -EEXIST;
1328                 goto err;
1329         }
1330
1331         session = g_try_new0(struct connman_session, 1);
1332         if (session == NULL) {
1333                 err = -ENOMEM;
1334                 goto err;
1335         }
1336
1337         session->info = g_try_new0(struct session_info, 1);
1338         if (session->info == NULL) {
1339                 err = -ENOMEM;
1340                 goto err;
1341         }
1342
1343         session->info_last = g_try_new0(struct session_info, 1);
1344         if (session->info_last == NULL) {
1345                 err = -ENOMEM;
1346                 goto err;
1347         }
1348
1349         info = session->info;
1350         info_last = session->info_last;
1351
1352         session->owner = g_strdup(owner);
1353         session->session_path = session_path;
1354         session->notify_path = g_strdup(notify_path);
1355         session->notify_watch =
1356                 g_dbus_add_disconnect_watch(connection, session->owner,
1357                                         owner_disconnect, session, NULL);
1358
1359         session->service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1360                                                 NULL, NULL);
1361
1362         info->online = FALSE;
1363         info->priority = priority;
1364         info->avoid_handover = avoid_handover;
1365         info->stay_connected = stay_connected;
1366         info->periodic_connect = periodic_connect;
1367         info->idle_timeout = idle_timeout;
1368         info->ecall = ecall;
1369         info->roaming_policy = roaming_policy;
1370         info->entry = NULL;
1371         info->marker = 0;
1372
1373         if (allowed_bearers == NULL) {
1374                 info->allowed_bearers =
1375                                 session_allowed_bearers_any();
1376
1377                 if (info->allowed_bearers == NULL) {
1378                         err = -ENOMEM;
1379                         goto err;
1380                 }
1381         } else {
1382                 info->allowed_bearers = allowed_bearers;
1383         }
1384
1385         g_hash_table_replace(session_hash, session->session_path, session);
1386
1387         DBG("add %s", session->session_path);
1388
1389         if (g_dbus_register_interface(connection, session->session_path,
1390                                         CONNMAN_SESSION_INTERFACE,
1391                                         session_methods, NULL,
1392                                         NULL, session, NULL) == FALSE) {
1393                 connman_error("Failed to register %s", session->session_path);
1394                 g_hash_table_remove(session_hash, session->session_path);
1395                 session = NULL;
1396
1397                 err = -EINVAL;
1398                 goto err;
1399         }
1400
1401         g_dbus_send_reply(connection, msg,
1402                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1403                                 DBUS_TYPE_INVALID);
1404
1405
1406         update_allowed_bearers(session);
1407         if (info->ecall == TRUE) {
1408                 ecall_session = session;
1409                 update_ecall_sessions(session);
1410         }
1411
1412         info_last->online = info->online;
1413         info_last->priority = info->priority;
1414         info_last->avoid_handover = info->avoid_handover;
1415         info_last->stay_connected = info->stay_connected;
1416         info_last->periodic_connect = info->periodic_connect;
1417         info_last->idle_timeout = info->idle_timeout;
1418         info_last->ecall = info->ecall;
1419         info_last->roaming_policy = info->roaming_policy;
1420         info_last->entry = info->entry;
1421         info_last->marker = info->marker;
1422         info_last->allowed_bearers = info->allowed_bearers;
1423
1424         session->info_dirty = TRUE;
1425         session->append_all = TRUE;
1426
1427         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1428
1429         return 0;
1430
1431 err:
1432         connman_error("Failed to create session");
1433
1434         if (session != NULL) {
1435                 if (session->info_last != NULL)
1436                         g_free(session->info_last);
1437                 if (session->info != NULL)
1438                         g_free(session->info);
1439                 g_free(session);
1440         }
1441
1442         g_free(session_path);
1443
1444         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1445         g_slist_free(allowed_bearers);
1446
1447         return err;
1448 }
1449
1450 int __connman_session_destroy(DBusMessage *msg)
1451 {
1452         const char *owner, *session_path;
1453         struct connman_session *session;
1454
1455         owner = dbus_message_get_sender(msg);
1456
1457         DBG("owner %s", owner);
1458
1459         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1460                                                         DBUS_TYPE_INVALID);
1461         if (session_path == NULL)
1462                 return -EINVAL;
1463
1464         session = g_hash_table_lookup(session_hash, session_path);
1465         if (session == NULL)
1466                 return -EINVAL;
1467
1468         if (g_strcmp0(owner, session->owner) != 0)
1469                 return -EACCES;
1470
1471         session_disconnect(session);
1472
1473         return 0;
1474 }
1475
1476 connman_bool_t __connman_session_mode()
1477 {
1478         return sessionmode;
1479 }
1480
1481 void __connman_session_set_mode(connman_bool_t enable)
1482 {
1483         DBG("enable %d", enable);
1484
1485         if (sessionmode == enable)
1486                 return;
1487
1488         sessionmode = enable;
1489
1490         if (sessionmode == TRUE)
1491                 __connman_service_disconnect_all();
1492 }
1493
1494 static void service_add(struct connman_service *service)
1495 {
1496         GHashTableIter iter;
1497         GSequenceIter *iter_service_list;
1498         gpointer key, value;
1499         struct connman_session *session;
1500
1501         DBG("service %p", service);
1502
1503         g_hash_table_iter_init(&iter, session_hash);
1504
1505         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1506                 session = value;
1507
1508                 if (service_match(session, service) == FALSE)
1509                         continue;
1510
1511                 iter_service_list =
1512                         g_sequence_insert_sorted(session->service_list,
1513                                                         service, sort_services,
1514                                                         session);
1515
1516                 g_hash_table_replace(session->service_hash, service,
1517                                         iter_service_list);
1518
1519                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1520         }
1521 }
1522
1523 static void service_remove(struct connman_service *service)
1524 {
1525
1526         GHashTableIter iter;
1527         gpointer key, value;
1528         struct connman_session *session;
1529         struct session_info *info;
1530
1531         DBG("service %p", service);
1532
1533         g_hash_table_iter_init(&iter, session_hash);
1534
1535         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1536                 GSequenceIter *iter;
1537                 session = value;
1538                 info = session->info;
1539
1540                 iter = g_hash_table_lookup(session->service_hash, service);
1541                 if (iter == NULL)
1542                         continue;
1543
1544                 g_sequence_remove(iter);
1545
1546                 info->entry = NULL;
1547                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1548         }
1549 }
1550
1551 static void service_state_changed(struct connman_service *service,
1552                                         enum connman_service_state state)
1553 {
1554         GHashTableIter iter;
1555         gpointer key, value;
1556         struct connman_session *session;
1557         struct session_info *info, *info_last;
1558
1559         DBG("service %p state %d", service, state);
1560
1561         g_hash_table_iter_init(&iter, session_hash);
1562
1563         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1564                 session = value;
1565                 info = session->info;
1566                 info_last = session->info_last;
1567
1568                 if (info->entry != NULL && info->entry->service == service) {
1569                         info->entry->state = state;
1570                         info->online = is_connected(info->entry->state);
1571                         if (info_last->online != info->online)
1572                                 session->info_dirty = TRUE;
1573                 }
1574
1575                 session_changed(session,
1576                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1577         }
1578 }
1579
1580 static void ipconfig_changed(struct connman_service *service,
1581                                 struct connman_ipconfig *ipconfig)
1582 {
1583         GHashTableIter iter;
1584         gpointer key, value;
1585         struct connman_session *session;
1586         struct session_info *info;
1587         enum connman_ipconfig_type type;
1588
1589         DBG("service %p ipconfig %p", service, ipconfig);
1590
1591         type = __connman_ipconfig_get_config_type(ipconfig);
1592
1593         g_hash_table_iter_init(&iter, session_hash);
1594
1595         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1596                 session = value;
1597                 info = session->info;
1598
1599                 if (info->entry != NULL && info->entry->service == service) {
1600                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1601                                 ipconfig_ipv4_changed(session);
1602                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1603                                 ipconfig_ipv6_changed(session);
1604                 }
1605         }
1606 }
1607
1608 static struct connman_notifier session_notifier = {
1609         .name                   = "session",
1610         .service_add            = service_add,
1611         .service_remove         = service_remove,
1612         .service_state_changed  = service_state_changed,
1613         .ipconfig_changed       = ipconfig_changed,
1614 };
1615
1616 int __connman_session_init(void)
1617 {
1618         int err;
1619
1620         DBG("");
1621
1622         connection = connman_dbus_get_connection();
1623         if (connection == NULL)
1624                 return -1;
1625
1626         err = connman_notifier_register(&session_notifier);
1627         if (err < 0) {
1628                 dbus_connection_unref(connection);
1629                 return err;
1630         }
1631
1632         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1633                                                 NULL, cleanup_session);
1634
1635         sessionmode = FALSE;
1636         return 0;
1637 }
1638
1639 void __connman_session_cleanup(void)
1640 {
1641         DBG("");
1642
1643         if (connection == NULL)
1644                 return;
1645
1646         connman_notifier_unregister(&session_notifier);
1647
1648         g_hash_table_foreach(session_hash, release_session, NULL);
1649         g_hash_table_destroy(session_hash);
1650
1651         dbus_connection_unref(connection);
1652 }