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
  35 enum connman_session_roaming_policy {
  36         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  37         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  38         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  39         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  40         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  41         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  42 };
  43
  44 struct connman_session {
  45         char *owner;
  46         char *session_path;
  47         char *notify_path;
  48         guint notify_watch;
  49
  50         char *bearer;
  51         const char *name;
  52         char *ifname;
  53         connman_bool_t connect;
  54         connman_bool_t online;
  55         connman_bool_t priority;
  56         GSList *allowed_bearers;
  57         connman_bool_t avoid_handover;
  58         connman_bool_t stay_connected;
  59         unsigned int periodic_connect;
  60         unsigned int idle_timeout;
  61         connman_bool_t ecall;
  62         enum connman_session_roaming_policy roaming_policy;
  63         unsigned int marker;
  64
  65         GSequence *service_list;
  66         struct connman_service *service;
  67 };
  68
  69 struct bearer_info {
  70         char *name;
  71         connman_bool_t match_all;
  72         enum connman_service_type service_type;
  73 };
  74
  75 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
  76 {
  77         switch (policy) {
  78         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
  79                 break;
  80         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
  81                 return "default";
  82         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
  83                 return "always";
  84         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
  85                 return "forbidden";
  86         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
  87                 return "national";
  88         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
  89                 return "international";
  90         }
  91
  92         return NULL;
  93 }
  94
  95 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
  96 {
  97         if (g_strcmp0(policy, "default") == 0)
  98                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
  99         else if (g_strcmp0(policy, "always") == 0)
 100                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 101         else if (g_strcmp0(policy, "forbidden") == 0)
 102                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 103         else if (g_strcmp0(policy, "national") == 0)
 104                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 105         else if (g_strcmp0(policy, "international") == 0)
 106                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 107         else
 108                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 109 }
 110
 111 static enum connman_service_type bearer2service(const char *bearer)
 112 {
 113         if (bearer == NULL)
 114                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 115
 116         if (g_strcmp0(bearer, "ethernet") == 0)
 117                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 118         else if (g_strcmp0(bearer, "wifi") == 0)
 119                 return CONNMAN_SERVICE_TYPE_WIFI;
 120         else if (g_strcmp0(bearer, "wimax") == 0)
 121                 return CONNMAN_SERVICE_TYPE_WIMAX;
 122         else if (g_strcmp0(bearer, "bluetooth") == 0)
 123                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 124         else if (g_strcmp0(bearer, "3g") == 0)
 125                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 126         else
 127                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 128 }
 129
 130 static char *service2bearer(enum connman_service_type type)
 131 {
 132         switch (type) {
 133         case CONNMAN_SERVICE_TYPE_ETHERNET:
 134                 return "ethernet";
 135         case CONNMAN_SERVICE_TYPE_WIFI:
 136                 return "wifi";
 137         case CONNMAN_SERVICE_TYPE_WIMAX:
 138                 return "wimax";
 139         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 140                 return "bluetooth";
 141         case CONNMAN_SERVICE_TYPE_CELLULAR:
 142                 return "3g";
 143         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 144         case CONNMAN_SERVICE_TYPE_SYSTEM:
 145         case CONNMAN_SERVICE_TYPE_GPS:
 146         case CONNMAN_SERVICE_TYPE_VPN:
 147         case CONNMAN_SERVICE_TYPE_GADGET:
 148                 return "";
 149         }
 150
 151         return "";
 152 }
 153
 154 static char *session2bearer(struct connman_session *session)
 155 {
 156         GSList *list;
 157         struct bearer_info *info;
 158         enum connman_service_type type;
 159
 160         if (session->service == NULL)
 161                 return "";
 162
 163         type = connman_service_get_type(session->service);
 164
 165         for (list = session->allowed_bearers; list != NULL; list = list->next) {
 166                 info = list->data;
 167
 168                 if (info->match_all)
 169                         return service2bearer(type);
 170
 171                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN)
 172                         return info->name;
 173
 174                 if (info->service_type == type)
 175                         return service2bearer(type);
 176         }
 177
 178         return "";
 179
 180 }
 181
 182 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 183 {
 184         struct bearer_info *info = data;
 185
 186         g_free(info->name);
 187         g_free(info);
 188 }
 189
 190 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 191 {
 192         struct bearer_info *info;
 193         DBusMessageIter array;
 194         GSList *list = NULL;
 195
 196         dbus_message_iter_recurse(iter, &array);
 197
 198         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 199                 char *bearer = NULL;
 200
 201                 dbus_message_iter_get_basic(&array, &bearer);
 202
 203                 info = g_try_new0(struct bearer_info, 1);
 204                 if (info == NULL) {
 205                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 206                         g_slist_free(list);
 207
 208                         return NULL;
 209                 }
 210
 211                 info->name = g_strdup(bearer);
 212                 info->service_type = bearer2service(info->name);
 213
 214                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 215                                 g_strcmp0(info->name, "*") == 0) {
 216                         info->match_all = TRUE;
 217                 } else {
 218                         info->match_all = FALSE;
 219                 }
 220
 221                 list = g_slist_append(list, info);
 222
 223                 dbus_message_iter_next(&array);
 224         }
 225
 226         return list;
 227 }
 228
 229 static GSList *session_allowed_bearers_any(void)
 230 {
 231         struct bearer_info *info;
 232         GSList *list = NULL;
 233
 234         info = g_try_new0(struct bearer_info, 1);
 235         if (info == NULL) {
 236                 g_slist_free(list);
 237
 238                 return NULL;
 239         }
 240
 241         info->name = g_strdup("");
 242         info->match_all = TRUE;
 243         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 244
 245         list = g_slist_append(list, info);
 246
 247         return list;
 248 }
 249
 250 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 251 {
 252         struct connman_session *session = user_data;
 253         GSList *list;
 254
 255         for (list = session->allowed_bearers; list != NULL; list = list->next) {
 256                 struct bearer_info *info = list->data;
 257
 258                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 259                                                 &info->name);
 260         }
 261 }
 262
 263 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 264 {
 265         struct connman_service *service = user_data;
 266         struct connman_ipconfig *ipconfig_ipv4;
 267
 268         if (service == NULL)
 269                 return;
 270
 271         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 272         if (ipconfig_ipv4 == NULL)
 273                 return;
 274
 275         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 276 }
 277
 278 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 279 {
 280         struct connman_service *service = user_data;
 281         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 282
 283         if (service == NULL)
 284                 return;
 285
 286         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 287         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 288         if (ipconfig_ipv6 == NULL)
 289                 return;
 290
 291         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 292 }
 293
 294 static void append_service(DBusMessageIter *dict,
 295                                         struct connman_session *session)
 296 {
 297         connman_dbus_dict_append_basic(dict, "Bearer",
 298                                         DBUS_TYPE_STRING, &session->bearer);
 299
 300         connman_dbus_dict_append_basic(dict, "Online",
 301                                         DBUS_TYPE_BOOLEAN, &session->online);
 302
 303         connman_dbus_dict_append_basic(dict, "Name",
 304                                         DBUS_TYPE_STRING, &session->name);
 305
 306         connman_dbus_dict_append_dict(dict, "IPv4",
 307                                         append_ipconfig_ipv4, session->service);
 308
 309         connman_dbus_dict_append_dict(dict, "IPv6",
 310                                         append_ipconfig_ipv6, session->service);
 311
 312         connman_dbus_dict_append_basic(dict, "Interface",
 313                                         DBUS_TYPE_STRING, &session->ifname);
 314
 315 }
 316
 317 static void append_notify_all(DBusMessageIter *dict,
 318                                         struct connman_session *session)
 319 {
 320         const char *policy;
 321
 322         append_service(dict, session);
 323
 324         connman_dbus_dict_append_basic(dict, "Priority",
 325                                         DBUS_TYPE_BOOLEAN, &session->priority);
 326
 327         connman_dbus_dict_append_array(dict, "AllowedBearers",
 328                                         DBUS_TYPE_STRING,
 329                                         append_allowed_bearers,
 330                                         session);
 331
 332         connman_dbus_dict_append_basic(dict, "AvoidHandover",
 333                                         DBUS_TYPE_BOOLEAN,
 334                                         &session->avoid_handover);
 335
 336         connman_dbus_dict_append_basic(dict, "StayConnected",
 337                                         DBUS_TYPE_BOOLEAN,
 338                                         &session->stay_connected);
 339
 340         connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 341                                         DBUS_TYPE_UINT32,
 342                                         &session->periodic_connect);
 343
 344         connman_dbus_dict_append_basic(dict, "IdleTimeout",
 345                                         DBUS_TYPE_UINT32,
 346                                         &session->idle_timeout);
 347
 348         connman_dbus_dict_append_basic(dict, "EmergencyCall",
 349                                         DBUS_TYPE_BOOLEAN, &session->ecall);
 350
 351         policy = roamingpolicy2string(session->roaming_policy);
 352         connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 353                                         DBUS_TYPE_STRING,
 354                                         &policy);
 355
 356         connman_dbus_dict_append_basic(dict, "SessionMarker",
 357                                         DBUS_TYPE_UINT32, &session->marker);
 358 }
 359
 360 static gboolean session_notify_all(gpointer user_data)
 361 {
 362         struct connman_session *session = user_data;
 363         DBusMessage *msg;
 364         DBusMessageIter array, dict;
 365
 366         DBG("session %p owner %s notify_path %s", session,
 367                 session->owner, session->notify_path);
 368
 369         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 370                                                 CONNMAN_NOTIFICATION_INTERFACE,
 371                                                 "Update");
 372         if (msg == NULL) {
 373                 connman_error("Could not create notification message");
 374                 return FALSE;
 375         }
 376
 377         dbus_message_iter_init_append(msg, &array);
 378         connman_dbus_dict_open(&array, &dict);
 379
 380         append_notify_all(&dict, session);
 381
 382         connman_dbus_dict_close(&array, &dict);
 383
 384         g_dbus_send_message(connection, msg);
 385
 386         return FALSE;
 387 }
 388
 389 static gboolean service_changed(gpointer user_data)
 390 {
 391         struct connman_session *session = user_data;
 392
 393
 394         DBusMessage *msg;
 395         DBusMessageIter array, dict;
 396
 397         DBG("session %p owner %s notify_path %s", session,
 398                 session->owner, session->notify_path);
 399
 400         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 401                                                 CONNMAN_NOTIFICATION_INTERFACE,
 402                                                 "Update");
 403         if (msg == NULL) {
 404                 connman_error("Could not create notification message");
 405                 return FALSE;
 406         }
 407
 408         dbus_message_iter_init_append(msg, &array);
 409         connman_dbus_dict_open(&array, &dict);
 410
 411         append_service(&dict, session);
 412
 413         connman_dbus_dict_close(&array, &dict);
 414
 415         g_dbus_send_message(connection, msg);
 416
 417         return FALSE;
 418 }
 419
 420 static void online_changed(struct connman_session *session)
 421 {
 422         connman_dbus_setting_changed_basic(session->owner, session->notify_path,
 423                                                 "Online", DBUS_TYPE_BOOLEAN,
 424                                                 &session->online);
 425 }
 426
 427 static void ipconfig_ipv4_changed(struct connman_session *session)
 428 {
 429         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 430                                         "IPv4", append_ipconfig_ipv4, session->service);
 431 }
 432
 433 static void ipconfig_ipv6_changed(struct connman_session *session)
 434 {
 435         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 436                                         "IPv6", append_ipconfig_ipv6, session->service);
 437 }
 438
 439 static void update_service(struct connman_session *session)
 440 {
 441         int idx;
 442
 443         if (session->service != NULL) {
 444                 session->bearer = session2bearer(session);
 445                 session->online =
 446                         __connman_service_is_connected(session->service);
 447                 session->name = __connman_service_get_name(session->service);
 448                 idx = __connman_service_get_index(session->service);
 449                 session->ifname = connman_inet_ifname(idx);
 450
 451         } else {
 452                 session->bearer = "";
 453                 session->online = FALSE;
 454                 session->name = "";
 455                 session->ifname = "";
 456         }
 457 }
 458
 459 static connman_bool_t service_type_match(struct connman_session *session,
 460                                         struct connman_service *service)
 461 {
 462         GSList *list;
 463
 464         for (list = session->allowed_bearers; list != NULL; list = list->next) {
 465                 struct bearer_info *info = list->data;
 466                 enum connman_service_type service_type;
 467
 468                 if (info->match_all == TRUE)
 469                         return TRUE;
 470
 471                 service_type = connman_service_get_type(service);
 472                 if (info->service_type == service_type)
 473                         return TRUE;
 474         }
 475
 476         return FALSE;
 477 }
 478
 479 static connman_bool_t service_match(struct connman_session *session,
 480                                         struct connman_service *service)
 481 {
 482         if (service_type_match(session, service) == FALSE)
 483                 return FALSE;
 484
 485         return TRUE;
 486 }
 487
 488 static int service_type_weight(enum connman_service_type type)
 489 {
 490         /*
 491          * The session doesn't care which service
 492          * to use. Nevertheless we have to sort them
 493          * according their type. The ordering is
 494          *
 495          * 1. Ethernet
 496          * 2. Bluetooth
 497          * 3. WiFi/WiMAX
 498          * 4. GSM/UTMS/3G
 499          */
 500
 501         switch (type) {
 502         case CONNMAN_SERVICE_TYPE_ETHERNET:
 503                 return 4;
 504         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 505                 return 3;
 506         case CONNMAN_SERVICE_TYPE_WIFI:
 507         case CONNMAN_SERVICE_TYPE_WIMAX:
 508                 return 2;
 509         case CONNMAN_SERVICE_TYPE_CELLULAR:
 510                 return 1;
 511         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 512         case CONNMAN_SERVICE_TYPE_SYSTEM:
 513         case CONNMAN_SERVICE_TYPE_GPS:
 514         case CONNMAN_SERVICE_TYPE_VPN:
 515         case CONNMAN_SERVICE_TYPE_GADGET:
 516                 break;
 517         }
 518
 519         return 0;
 520 }
 521
 522 static gint sort_allowed_bearers(struct connman_service *service_a,
 523                                         struct connman_service *service_b,
 524                                         struct connman_session *session)
 525 {
 526         GSList *list;
 527         enum connman_service_type type_a, type_b;
 528         int weight_a, weight_b;
 529
 530         type_a = connman_service_get_type(service_a);
 531         type_b = connman_service_get_type(service_b);
 532
 533         for (list = session->allowed_bearers; list != NULL; list = list->next) {
 534                 struct bearer_info *info = list->data;
 535
 536                 if (info->match_all == TRUE) {
 537                         if (type_a != type_b) {
 538                                 weight_a = service_type_weight(type_a);
 539                                 weight_b = service_type_weight(type_b);
 540
 541                                 if (weight_a > weight_b)
 542                                         return -1;
 543
 544                                 if (weight_a < weight_b)
 545                                         return 1;
 546
 547                                 return 0;
 548                         }
 549                 }
 550
 551                 if (type_a == info->service_type &&
 552                                 type_b == info->service_type) {
 553                         return 0;
 554                 }
 555
 556                 if (type_a == info->service_type &&
 557                                 type_b != info->service_type) {
 558                         return -1;
 559                 }
 560
 561                 if (type_a != info->service_type &&
 562                                 type_b == info->service_type) {
 563                         return 1;
 564                 }
 565         }
 566
 567         return 0;
 568 }
 569
 570 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 571 {
 572         struct connman_service *service_a = (void *)a;
 573         struct connman_service *service_b = (void *)b;
 574         struct connman_session *session = user_data;
 575
 576         return sort_allowed_bearers(service_a, service_b, session);
 577 }
 578
 579 static void print_name(gpointer data, gpointer user_data)
 580 {
 581         struct connman_service *service = data;
 582
 583         DBG("service %p type %s name %s", service,
 584                 service2bearer(connman_service_get_type(service)),
 585                 __connman_service_get_name(service));
 586 }
 587
 588 static connman_bool_t session_select_service(struct connman_session *session)
 589 {
 590         struct connman_service *service;
 591         GSequenceIter *iter;
 592
 593         session->service_list =
 594                 __connman_service_get_list(session, service_match);
 595
 596         if (session->service_list == NULL)
 597                 return FALSE;
 598
 599         g_sequence_sort(session->service_list, sort_services, session);
 600         g_sequence_foreach(session->service_list, print_name, NULL);
 601
 602         iter = g_sequence_get_begin_iter(session->service_list);
 603
 604         while (g_sequence_iter_is_end(iter) == FALSE) {
 605                 service = g_sequence_get(iter);
 606
 607                 if (__connman_service_is_connecting(service) == TRUE ||
 608                                 __connman_service_is_connected(service) == TRUE) {
 609                         session->service = service;
 610                         return TRUE;
 611                 }
 612
 613                 iter = g_sequence_iter_next(iter);
 614         }
 615
 616         return FALSE;
 617 }
 618
 619 static void cleanup_session(gpointer user_data)
 620 {
 621         struct connman_session *session = user_data;
 622
 623         DBG("remove %s", session->session_path);
 624
 625         g_sequence_free(session->service_list);
 626
 627         g_slist_foreach(session->allowed_bearers, cleanup_bearer_info, NULL);
 628         g_slist_free(session->allowed_bearers);
 629
 630         g_free(session->owner);
 631         g_free(session->session_path);
 632         g_free(session->notify_path);
 633
 634         g_free(session);
 635 }
 636
 637 static void release_session(gpointer key, gpointer value, gpointer user_data)
 638 {
 639         struct connman_session *session = value;
 640         DBusMessage *message;
 641
 642         DBG("owner %s path %s", session->owner, session->notify_path);
 643
 644         if (session->notify_watch > 0)
 645                 g_dbus_remove_watch(connection, session->notify_watch);
 646
 647         g_dbus_unregister_interface(connection, session->session_path,
 648                                                 CONNMAN_SESSION_INTERFACE);
 649
 650         message = dbus_message_new_method_call(session->owner,
 651                                                 session->notify_path,
 652                                                 CONNMAN_NOTIFICATION_INTERFACE,
 653                                                 "Release");
 654         if (message == NULL)
 655                 return;
 656
 657         dbus_message_set_no_reply(message, TRUE);
 658
 659         g_dbus_send_message(connection, message);
 660 }
 661
 662 static int session_disconnect(struct connman_session *session)
 663 {
 664         DBG("session %p, %s", session, session->owner);
 665
 666         if (session->notify_watch > 0)
 667                 g_dbus_remove_watch(connection, session->notify_watch);
 668
 669         g_dbus_unregister_interface(connection, session->session_path,
 670                                                 CONNMAN_SESSION_INTERFACE);
 671
 672         g_hash_table_remove(session_hash, session->session_path);
 673
 674         return 0;
 675 }
 676
 677 static void owner_disconnect(DBusConnection *conn, void *user_data)
 678 {
 679         struct connman_session *session = user_data;
 680
 681         DBG("session %p, %s died", session, session->owner);
 682
 683         session_disconnect(session);
 684 }
 685
 686 static DBusMessage *destroy_session(DBusConnection *conn,
 687                                         DBusMessage *msg, void *user_data)
 688 {
 689         struct connman_session *session = user_data;
 690
 691         DBG("session %p", session);
 692
 693         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 694 }
 695
 696 static gboolean session_do_connect(gpointer user_data)
 697 {
 698         struct connman_session *session = user_data;
 699
 700         __connman_service_connect(session->service);
 701
 702         service_changed(session);
 703         return FALSE;
 704 }
 705
 706 static DBusMessage *connect_session(DBusConnection *conn,
 707                                         DBusMessage *msg, void *user_data)
 708 {
 709         struct connman_session *session = user_data;
 710         struct connman_service *service = NULL;
 711         GSourceFunc callback = NULL;
 712         GSequenceIter *iter;
 713
 714         DBG("session %p", session);
 715
 716         session->connect = TRUE;
 717
 718         if (session->service_list != NULL)
 719                 g_sequence_free(session->service_list);
 720
 721         session->service_list = __connman_service_get_list(session,
 722                                                                 service_match);
 723
 724         g_sequence_sort(session->service_list, sort_services, session);
 725         g_sequence_foreach(session->service_list, print_name, NULL);
 726
 727         iter = g_sequence_get_begin_iter(session->service_list);
 728
 729         while (g_sequence_iter_is_end(iter) == FALSE) {
 730                 service = g_sequence_get(iter);
 731
 732                 if (__connman_service_is_connecting(service) == TRUE ||
 733                                 __connman_service_is_connected(service) == TRUE) {
 734                         callback = service_changed;
 735                         break;
 736                 }
 737
 738                 if (__connman_service_is_idle(service) == TRUE) {
 739                         callback = session_do_connect;
 740                         break;
 741                 }
 742
 743                 service = NULL;
 744
 745                 iter = g_sequence_iter_next(iter);
 746         }
 747
 748         if (service != NULL) {
 749                 session->service = service;
 750                 update_service(session);
 751                 g_timeout_add_seconds(0, callback, session);
 752         }
 753
 754         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 755 }
 756
 757 static gboolean session_do_disconnect(gpointer user_data)
 758 {
 759         struct connman_session *session = user_data;
 760
 761         if (__connman_service_disconnect(session->service) < 0)
 762                 return FALSE;
 763
 764         session->service = NULL;
 765         update_service(session);
 766         service_changed(session);
 767
 768         return FALSE;
 769 }
 770
 771 static DBusMessage *disconnect_session(DBusConnection *conn,
 772                                         DBusMessage *msg, void *user_data)
 773 {
 774         struct connman_session *session = user_data;
 775
 776         DBG("session %p", session);
 777
 778         session->connect = FALSE;
 779
 780         if (session->service == NULL)
 781                 return __connman_error_already_disabled(msg);
 782
 783         g_timeout_add_seconds(0, session_do_disconnect, session);
 784
 785         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 786 }
 787
 788 static DBusMessage *change_session(DBusConnection *conn,
 789                                         DBusMessage *msg, void *user_data)
 790 {
 791         struct connman_session *session = user_data;
 792         DBusMessageIter iter, value;
 793         DBusMessage *reply;
 794         DBusMessageIter reply_array, reply_dict;
 795         const char *name;
 796         GSList *allowed_bearers;
 797
 798         DBG("session %p", session);
 799         if (dbus_message_iter_init(msg, &iter) == FALSE)
 800                 return __connman_error_invalid_arguments(msg);
 801
 802         reply = dbus_message_new_method_call(session->owner,
 803                                                 session->notify_path,
 804                                                 CONNMAN_NOTIFICATION_INTERFACE,
 805                                                 "Update");
 806         if (reply == NULL)
 807                 return __connman_error_failed(msg, ENOMEM);
 808
 809         dbus_message_iter_init_append(reply, &reply_array);
 810         connman_dbus_dict_open(&reply_array, &reply_dict);
 811
 812         dbus_message_iter_get_basic(&iter, &name);
 813         dbus_message_iter_next(&iter);
 814         dbus_message_iter_recurse(&iter, &value);
 815
 816         switch (dbus_message_iter_get_arg_type(&value)) {
 817         case DBUS_TYPE_ARRAY:
 818                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
 819                         allowed_bearers = session_parse_allowed_bearers(&value);
 820
 821                         g_slist_foreach(session->allowed_bearers,
 822                                         cleanup_bearer_info, NULL);
 823                         g_slist_free(session->allowed_bearers);
 824
 825                         if (allowed_bearers == NULL) {
 826                                 allowed_bearers = session_allowed_bearers_any();
 827
 828                                 if (allowed_bearers == NULL) {
 829                                         dbus_message_unref(reply);
 830                                         return __connman_error_failed(msg, ENOMEM);
 831                                 }
 832                         }
 833
 834                         session->allowed_bearers = allowed_bearers;
 835
 836                         /* update_allowed_bearers(); */
 837
 838                         connman_dbus_dict_append_array(&reply_dict,
 839                                                         "AllowedBearers",
 840                                                         DBUS_TYPE_STRING,
 841                                                         append_allowed_bearers,
 842                                                         session);
 843                 } else {
 844                         goto err;
 845                 }
 846                 break;
 847         case DBUS_TYPE_BOOLEAN:
 848                 if (g_str_equal(name, "Priority") == TRUE) {
 849                         dbus_message_iter_get_basic(&value, &session->priority);
 850
 851                         /* update_priority(); */
 852
 853                         connman_dbus_dict_append_basic(&reply_dict, "Priority",
 854                                                         DBUS_TYPE_BOOLEAN,
 855                                                         &session->priority);
 856
 857                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
 858                         dbus_message_iter_get_basic(&value,
 859                                                 &session->avoid_handover);
 860
 861                         /* update_avoid_handover(); */
 862
 863                         connman_dbus_dict_append_basic(&reply_dict,
 864                                                 "AvoidHandover",
 865                                                 DBUS_TYPE_BOOLEAN,
 866                                                 &session->avoid_handover);
 867
 868                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
 869                         dbus_message_iter_get_basic(&value,
 870                                                 &session->stay_connected);
 871
 872                         /* update_stay_connected(); */
 873
 874                         connman_dbus_dict_append_basic(&reply_dict,
 875                                                 "StayConnected",
 876                                                 DBUS_TYPE_BOOLEAN,
 877                                                 &session->stay_connected);
 878
 879                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
 880                         dbus_message_iter_get_basic(&value, &session->ecall);
 881
 882                         /* update_ecall(); */
 883
 884                         connman_dbus_dict_append_basic(&reply_dict,
 885                                                 "EmergencyCall",
 886                                                 DBUS_TYPE_BOOLEAN,
 887                                                 &session->ecall);
 888
 889                 } else {
 890                         goto err;
 891                 }
 892                 break;
 893         case DBUS_TYPE_UINT32:
 894                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
 895                         dbus_message_iter_get_basic(&value,
 896                                                 &session->periodic_connect);
 897
 898                         /* update_periodic_update(); */
 899
 900                         connman_dbus_dict_append_basic(&reply_dict,
 901                                                 "PeriodicConnect",
 902                                                 DBUS_TYPE_UINT32,
 903                                                 &session->periodic_connect);
 904                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
 905                         dbus_message_iter_get_basic(&value,
 906                                                 &session->idle_timeout);
 907
 908                         /* update_idle_timeout(); */
 909
 910                         connman_dbus_dict_append_basic(&reply_dict,
 911                                                 "IdleTimeout",
 912                                                 DBUS_TYPE_UINT32,
 913                                                 &session->idle_timeout);
 914                 } else {
 915                         goto err;
 916                 }
 917                 break;
 918         case DBUS_TYPE_STRING:
 919                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
 920                         const char *val;
 921                         dbus_message_iter_get_basic(&value, &val);
 922                         session->roaming_policy = string2roamingpolicy(val);
 923
 924                         /* update_roaming_allowed(); */
 925
 926                         val = roamingpolicy2string(session->roaming_policy);
 927                         connman_dbus_dict_append_basic(&reply_dict,
 928                                                 "RoamingPolicy",
 929                                                 DBUS_TYPE_STRING,
 930                                                 &val);
 931                 } else {
 932                         goto err;
 933                 }
 934                 break;
 935         }
 936
 937         connman_dbus_dict_close(&reply_array, &reply_dict);
 938
 939         g_dbus_send_message(connection, reply);
 940
 941         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 942
 943 err:
 944         dbus_message_unref(reply);
 945         return __connman_error_invalid_arguments(msg);
 946 }
 947
 948 static GDBusMethodTable session_methods[] = {
 949         { "Destroy",    "",   "", destroy_session    },
 950         { "Connect",    "",   "", connect_session    },
 951         { "Disconnect", "",   "", disconnect_session },
 952         { "Change",     "sv", "", change_session     },
 953         { },
 954 };
 955
 956 int __connman_session_create(DBusMessage *msg)
 957 {
 958         const char *owner, *notify_path;
 959         char *session_path;
 960         DBusMessageIter iter, array;
 961         struct connman_session *session;
 962
 963         connman_bool_t priority = FALSE, avoid_handover = FALSE;
 964         connman_bool_t stay_connected = FALSE, ecall = FALSE;
 965         enum connman_session_roaming_policy roaming_policy =
 966                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 967         GSList *allowed_bearers = NULL;
 968         unsigned int periodic_connect = 0;
 969         unsigned int idle_timeout = 0;
 970
 971         int err;
 972
 973         owner = dbus_message_get_sender(msg);
 974
 975         DBG("owner %s", owner);
 976
 977         dbus_message_iter_init(msg, &iter);
 978         dbus_message_iter_recurse(&iter, &array);
 979
 980         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
 981                 DBusMessageIter entry, value;
 982                 const char *key, *val;
 983
 984                 dbus_message_iter_recurse(&array, &entry);
 985                 dbus_message_iter_get_basic(&entry, &key);
 986
 987                 dbus_message_iter_next(&entry);
 988                 dbus_message_iter_recurse(&entry, &value);
 989
 990                 switch (dbus_message_iter_get_arg_type(&value)) {
 991                 case DBUS_TYPE_ARRAY:
 992                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
 993                                 allowed_bearers =
 994                                         session_parse_allowed_bearers(&value);
 995                         } else {
 996                                 return -EINVAL;
 997                         }
 998                         break;
 999                 case DBUS_TYPE_BOOLEAN:
1000                         if (g_str_equal(key, "Priority") == TRUE) {
1001                                 dbus_message_iter_get_basic(&value,
1002                                                         &priority);
1003                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1004                                 dbus_message_iter_get_basic(&value,
1005                                                         &avoid_handover);
1006                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1007                                 dbus_message_iter_get_basic(&value,
1008                                                         &stay_connected);
1009                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1010                                 dbus_message_iter_get_basic(&value,
1011                                                         &ecall);
1012                         } else {
1013                                 return -EINVAL;
1014                         }
1015                         break;
1016                 case DBUS_TYPE_UINT32:
1017                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1018                                 dbus_message_iter_get_basic(&value,
1019                                                         &periodic_connect);
1020                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1021                                 dbus_message_iter_get_basic(&value,
1022                                                         &idle_timeout);
1023                         } else {
1024                                 return -EINVAL;
1025                         }
1026                         break;
1027                 case DBUS_TYPE_STRING:
1028                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1029                                 dbus_message_iter_get_basic(&value, &val);
1030                                 roaming_policy = string2roamingpolicy(val);
1031                         } else {
1032                                 return -EINVAL;
1033                         }
1034                 }
1035                 dbus_message_iter_next(&array);
1036         }
1037
1038         dbus_message_iter_next(&iter);
1039         dbus_message_iter_get_basic(&iter, &notify_path);
1040
1041         if (notify_path == NULL) {
1042                 session_path = NULL;
1043                 err = -EINVAL;
1044                 goto err;
1045         }
1046
1047         session_path = g_strdup_printf("/sessions%s", notify_path);
1048         if (session_path == NULL) {
1049                 err = -ENOMEM;
1050                 goto err;
1051         }
1052
1053         session = g_hash_table_lookup(session_hash, session_path);
1054         if (session != NULL) {
1055                 err = -EEXIST;
1056                 goto err;
1057         }
1058
1059         session = g_try_new0(struct connman_session, 1);
1060         if (session == NULL) {
1061                 err = -ENOMEM;
1062                 goto err;
1063         }
1064
1065         session->owner = g_strdup(owner);
1066         session->session_path = session_path;
1067         session->notify_path = g_strdup(notify_path);
1068         session->notify_watch =
1069                 g_dbus_add_disconnect_watch(connection, session->owner,
1070                                         owner_disconnect, session, NULL);
1071
1072         session->bearer = "";
1073         session->online = FALSE;
1074         session->priority = priority;
1075         session->avoid_handover = avoid_handover;
1076         session->stay_connected = stay_connected;
1077         session->periodic_connect = periodic_connect;
1078         session->idle_timeout = idle_timeout;
1079         session->ecall = ecall;
1080         session->roaming_policy = roaming_policy;
1081
1082         if (allowed_bearers == NULL) {
1083                 session->allowed_bearers = session_allowed_bearers_any();
1084
1085                 if (session->allowed_bearers == NULL) {
1086                         err = -ENOMEM;
1087                         goto err;
1088                 }
1089         } else {
1090                 session->allowed_bearers = allowed_bearers;
1091         }
1092
1093         session->service_list = NULL;
1094
1095         update_service(session);
1096
1097         g_hash_table_replace(session_hash, session->session_path, session);
1098
1099         DBG("add %s", session->session_path);
1100
1101         if (g_dbus_register_interface(connection, session->session_path,
1102                                         CONNMAN_SESSION_INTERFACE,
1103                                         session_methods, NULL,
1104                                         NULL, session, NULL) == FALSE) {
1105                 connman_error("Failed to register %s", session->session_path);
1106                 g_hash_table_remove(session_hash, session->session_path);
1107                 session = NULL;
1108
1109                 err = -EINVAL;
1110                 goto err;
1111         }
1112
1113         g_dbus_send_reply(connection, msg,
1114                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1115                                 DBUS_TYPE_INVALID);
1116
1117
1118         /*
1119          * Check if the session settings matches to a service which is
1120          * a already connected
1121          */
1122         if (session_select_service(session) == TRUE)
1123                 update_service(session);
1124
1125         g_timeout_add_seconds(0, session_notify_all, session);
1126
1127         return 0;
1128
1129 err:
1130         connman_error("Failed to create session");
1131         g_free(session_path);
1132
1133         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1134         g_slist_free(allowed_bearers);
1135
1136         return err;
1137 }
1138
1139 int __connman_session_destroy(DBusMessage *msg)
1140 {
1141         const char *owner, *session_path;
1142         struct connman_session *session;
1143
1144         owner = dbus_message_get_sender(msg);
1145
1146         DBG("owner %s", owner);
1147
1148         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1149                                                         DBUS_TYPE_INVALID);
1150         if (session_path == NULL)
1151                 return -EINVAL;
1152
1153         session = g_hash_table_lookup(session_hash, session_path);
1154         if (session == NULL)
1155                 return -EINVAL;
1156
1157         if (g_strcmp0(owner, session->owner) != 0)
1158                 return -EACCES;
1159
1160         session_disconnect(session);
1161
1162         return 0;
1163 }
1164
1165 connman_bool_t __connman_session_mode()
1166 {
1167         return sessionmode;
1168 }
1169
1170 void __connman_session_set_mode(connman_bool_t enable)
1171 {
1172         DBG("enable %d", enable);
1173
1174         if (sessionmode == enable)
1175                 return;
1176
1177         sessionmode = enable;
1178
1179         if (sessionmode == TRUE)
1180                 __connman_service_disconnect_all();
1181 }
1182
1183 static void service_add(struct connman_service *service)
1184 {
1185         GHashTableIter iter;
1186         gpointer key, value;
1187         struct connman_session *session;
1188
1189         DBG("service %p", service);
1190
1191         g_hash_table_iter_init(&iter, session_hash);
1192
1193         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1194                 session = value;
1195
1196                 if (service_match(session, service) == FALSE)
1197                         continue;
1198
1199                 g_sequence_insert_sorted(session->service_list, service,
1200                                                 sort_services, session);
1201         }
1202 }
1203
1204 static gint service_in_session(gconstpointer a, gconstpointer b,
1205                                 gpointer user_data)
1206 {
1207         if (a == b)
1208                 return 0;
1209
1210         return -1;
1211 }
1212
1213 static void service_remove(struct connman_service *service)
1214 {
1215
1216         GHashTableIter iter;
1217         gpointer key, value;
1218         GSequenceIter *seq_iter;
1219         struct connman_session *session;
1220         struct connman_service *found_service;
1221
1222         DBG("service %p", service);
1223
1224         g_hash_table_iter_init(&iter, session_hash);
1225
1226         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1227                 session = value;
1228
1229                 if (session->service_list == NULL)
1230                         continue;
1231
1232                 seq_iter = g_sequence_search(session->service_list, service,
1233                                                 service_in_session, NULL);
1234                 if (g_sequence_iter_is_end(seq_iter) == TRUE)
1235                         continue;
1236
1237                 g_sequence_remove(seq_iter);
1238
1239                 found_service = g_sequence_get(seq_iter);
1240                 if (found_service != session->service)
1241                         continue;
1242
1243                 session->service = NULL;
1244                 update_service(session);
1245                 g_timeout_add_seconds(0, service_changed, session);
1246         }
1247 }
1248
1249 static void service_state_changed(struct connman_service *service,
1250                                         enum connman_service_state state)
1251 {
1252         GHashTableIter iter;
1253         gpointer key, value;
1254         struct connman_session *session;
1255         connman_bool_t online;
1256
1257         DBG("service %p state %d", service, state);
1258
1259         g_hash_table_iter_init(&iter, session_hash);
1260
1261         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1262                 session = value;
1263
1264                 if (session->service == service) {
1265                         online = __connman_service_is_connected(service);
1266                         if (session->online == online)
1267                                 continue;
1268
1269                         session->online = online;
1270                         online_changed(session);
1271                 }
1272         }
1273 }
1274
1275 static void ipconfig_changed(struct connman_service *service,
1276                                 struct connman_ipconfig *ipconfig)
1277 {
1278         GHashTableIter iter;
1279         gpointer key, value;
1280         struct connman_session *session;
1281         enum connman_ipconfig_type type;
1282
1283         DBG("service %p ipconfig %p", service, ipconfig);
1284
1285         type = __connman_ipconfig_get_config_type(ipconfig);
1286
1287         g_hash_table_iter_init(&iter, session_hash);
1288
1289         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1290                 session = value;
1291
1292                 if (session->service == service) {
1293                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1294                                 ipconfig_ipv4_changed(session);
1295                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1296                                 ipconfig_ipv6_changed(session);
1297                 }
1298         }
1299 }
1300
1301 static struct connman_notifier session_notifier = {
1302         .name                   = "session",
1303         .service_add            = service_add,
1304         .service_remove         = service_remove,
1305         .service_state_changed  = service_state_changed,
1306         .ipconfig_changed       = ipconfig_changed,
1307 };
1308
1309 int __connman_session_init(void)
1310 {
1311         int err;
1312
1313         DBG("");
1314
1315         connection = connman_dbus_get_connection();
1316         if (connection == NULL)
1317                 return -1;
1318
1319         err = connman_notifier_register(&session_notifier);
1320         if (err < 0) {
1321                 dbus_connection_unref(connection);
1322                 return err;
1323         }
1324
1325         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1326                                                 NULL, cleanup_session);
1327
1328         sessionmode = FALSE;
1329         return 0;
1330 }
1331
1332 void __connman_session_cleanup(void)
1333 {
1334         DBG("");
1335
1336         if (connection == NULL)
1337                 return;
1338
1339         connman_notifier_unregister(&session_notifier);
1340
1341         g_hash_table_foreach(session_hash, release_session, NULL);
1342         g_hash_table_destroy(session_hash);
1343
1344         dbus_connection_unref(connection);
1345 }