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