src/session.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2011  BWM CarIT GmbH. All rights reserved.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <errno.h>
  28
  29 #include <gdbus.h>
  30
  31 #include <connman/session.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection;
  36 static GHashTable *session_hash;
  37 static connman_bool_t sessionmode;
  38 static struct connman_session *ecall_session;
  39 static struct connman_session_config *session_config;
  40
  41 enum connman_session_trigger {
  42         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  43         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  44         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  45         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  46         CONNMAN_SESSION_TRIGGER_SERVICE         = 4,
  47         CONNMAN_SESSION_TRIGGER_ECALL           = 5,
  48 };
  49
  50 enum connman_session_reason {
  51         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  52         CONNMAN_SESSION_REASON_CONNECT          = 1,
  53         CONNMAN_SESSION_REASON_FREE_RIDE        = 2,
  54 };
  55
  56 enum connman_session_state {
  57         CONNMAN_SESSION_STATE_DISCONNECTED   = 0,
  58         CONNMAN_SESSION_STATE_CONNECTED      = 1,
  59         CONNMAN_SESSION_STATE_ONLINE         = 2,
  60 };
  61
  62 enum connman_session_type {
  63         CONNMAN_SESSION_TYPE_ANY      = 0,
  64         CONNMAN_SESSION_TYPE_LOCAL    = 1,
  65         CONNMAN_SESSION_TYPE_INTERNET = 2,
  66 };
  67
  68 enum connman_session_roaming_policy {
  69         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  70         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  71         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  72         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  73         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  74         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  75 };
  76
  77 struct service_entry {
  78         /* track why this service was selected */
  79         enum connman_session_reason reason;
  80         enum connman_service_state state;
  81         const char *name;
  82         struct connman_service *service;
  83         char *ifname;
  84         const char *bearer;
  85         GSList *pending_timeouts;
  86 };
  87
  88 struct session_info {
  89         enum connman_session_state state;
  90         enum connman_session_type type;
  91         connman_bool_t priority;
  92         GSList *allowed_bearers;
  93         enum connman_session_roaming_policy roaming_policy;
  94
  95         struct service_entry *entry;
  96         enum connman_session_reason reason;
  97 };
  98
  99 struct connman_session {
 100         char *owner;
 101         char *session_path;
 102         char *notify_path;
 103         guint notify_watch;
 104
 105         connman_bool_t append_all;
 106         struct session_info *info;
 107         struct session_info *info_last;
 108
 109         connman_bool_t ecall;
 110
 111         GSequence *service_list;
 112         GHashTable *service_hash;
 113 };
 114
 115 struct bearer_info {
 116         char *name;
 117         connman_bool_t match_all;
 118         enum connman_service_type service_type;
 119 };
 120
 121 static const char *trigger2string(enum connman_session_trigger trigger)
 122 {
 123         switch (trigger) {
 124         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 125                 break;
 126         case CONNMAN_SESSION_TRIGGER_SETTING:
 127                 return "setting";
 128         case CONNMAN_SESSION_TRIGGER_CONNECT:
 129                 return "connect";
 130         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 131                 return "disconnect";
 132         case CONNMAN_SESSION_TRIGGER_SERVICE:
 133                 return "service";
 134         case CONNMAN_SESSION_TRIGGER_ECALL:
 135                 return "ecall";
 136         }
 137
 138         return NULL;
 139 }
 140
 141 static const char *reason2string(enum connman_session_reason reason)
 142 {
 143         switch (reason) {
 144         case CONNMAN_SESSION_REASON_UNKNOWN:
 145                 return "unknown";
 146         case CONNMAN_SESSION_REASON_CONNECT:
 147                 return "connect";
 148         case CONNMAN_SESSION_REASON_FREE_RIDE:
 149                 return "free-ride";
 150         }
 151
 152         return NULL;
 153 }
 154
 155 static const char *state2string(enum connman_session_state state)
 156 {
 157         switch (state) {
 158         case CONNMAN_SESSION_STATE_DISCONNECTED:
 159                 return "disconnected";
 160         case CONNMAN_SESSION_STATE_CONNECTED:
 161                 return "connected";
 162         case CONNMAN_SESSION_STATE_ONLINE:
 163                 return "online";
 164         }
 165
 166         return NULL;
 167 }
 168
 169 static const char *type2string(enum connman_session_type type)
 170 {
 171         switch (type) {
 172         case CONNMAN_SESSION_TYPE_ANY:
 173                 return "";
 174         case CONNMAN_SESSION_TYPE_LOCAL:
 175                 return "local";
 176         case CONNMAN_SESSION_TYPE_INTERNET:
 177                 return "internet";
 178         }
 179
 180         return NULL;
 181 }
 182
 183 static enum connman_session_type string2type(const char *type)
 184 {
 185         if (g_strcmp0(type, "local") == 0)
 186                 return CONNMAN_SESSION_TYPE_LOCAL;
 187         else if (g_strcmp0(type, "internet") == 0)
 188                 return CONNMAN_SESSION_TYPE_INTERNET;
 189
 190         return CONNMAN_SESSION_TYPE_ANY;
 191 }
 192
 193 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 194 {
 195         if (g_strcmp0(policy, "default") == 0)
 196                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 197         else if (g_strcmp0(policy, "always") == 0)
 198                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 199         else if (g_strcmp0(policy, "forbidden") == 0)
 200                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 201         else if (g_strcmp0(policy, "national") == 0)
 202                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 203         else if (g_strcmp0(policy, "international") == 0)
 204                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 205         else
 206                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 207 }
 208
 209 static enum connman_service_type bearer2service(const char *bearer)
 210 {
 211         if (bearer == NULL)
 212                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 213
 214         if (g_strcmp0(bearer, "ethernet") == 0)
 215                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 216         else if (g_strcmp0(bearer, "wifi") == 0)
 217                 return CONNMAN_SERVICE_TYPE_WIFI;
 218         else if (g_strcmp0(bearer, "wimax") == 0)
 219                 return CONNMAN_SERVICE_TYPE_WIMAX;
 220         else if (g_strcmp0(bearer, "bluetooth") == 0)
 221                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 222         else if (g_strcmp0(bearer, "cellular") == 0)
 223                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 224         else if (g_strcmp0(bearer, "vpn") == 0)
 225                 return CONNMAN_SERVICE_TYPE_VPN;
 226         else
 227                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 228 }
 229
 230 static char *service2bearer(enum connman_service_type type)
 231 {
 232         switch (type) {
 233         case CONNMAN_SERVICE_TYPE_ETHERNET:
 234                 return "ethernet";
 235         case CONNMAN_SERVICE_TYPE_WIFI:
 236                 return "wifi";
 237         case CONNMAN_SERVICE_TYPE_WIMAX:
 238                 return "wimax";
 239         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 240                 return "bluetooth";
 241         case CONNMAN_SERVICE_TYPE_CELLULAR:
 242                 return "cellular";
 243         case CONNMAN_SERVICE_TYPE_VPN:
 244                 return "vpn";
 245         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 246         case CONNMAN_SERVICE_TYPE_SYSTEM:
 247         case CONNMAN_SERVICE_TYPE_GPS:
 248         case CONNMAN_SERVICE_TYPE_GADGET:
 249                 return "";
 250         }
 251
 252         return "";
 253 }
 254
 255 static int config_get_bool(const char *id, const char *key, connman_bool_t *val)
 256 {
 257         if (session_config == NULL) {
 258                 *val = FALSE;
 259                 return -EINVAL;
 260         }
 261
 262         return (*session_config->get_bool)(id, key, val);
 263 }
 264
 265 static int config_get_string(const char *id, const char *key, char **val)
 266 {
 267         if (session_config == NULL) {
 268                 *val = NULL;
 269                 return -EINVAL;
 270         }
 271
 272         return (*session_config->get_string)(id, key, val);
 273 }
 274
 275 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 276 {
 277         struct bearer_info *info = data;
 278
 279         g_free(info->name);
 280         g_free(info);
 281 }
 282
 283 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 284 {
 285         struct bearer_info *info;
 286         DBusMessageIter array;
 287         GSList *list = NULL;
 288
 289         dbus_message_iter_recurse(iter, &array);
 290
 291         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 292                 char *bearer = NULL;
 293
 294                 dbus_message_iter_get_basic(&array, &bearer);
 295
 296                 info = g_try_new0(struct bearer_info, 1);
 297                 if (info == NULL) {
 298                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 299                         g_slist_free(list);
 300
 301                         return NULL;
 302                 }
 303
 304                 info->name = g_strdup(bearer);
 305                 info->service_type = bearer2service(info->name);
 306
 307                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 308                                 g_strcmp0(info->name, "*") == 0) {
 309                         info->match_all = TRUE;
 310                 } else {
 311                         info->match_all = FALSE;
 312                 }
 313
 314                 list = g_slist_append(list, info);
 315
 316                 dbus_message_iter_next(&array);
 317         }
 318
 319         return list;
 320 }
 321
 322 static GSList *session_allowed_bearers_any(void)
 323 {
 324         struct bearer_info *info;
 325         GSList *list = NULL;
 326
 327         info = g_try_new0(struct bearer_info, 1);
 328         if (info == NULL)
 329                 return NULL;
 330
 331         info->name = g_strdup("");
 332         info->match_all = TRUE;
 333         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 334
 335         list = g_slist_append(list, info);
 336
 337         return list;
 338 }
 339
 340 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 341 {
 342         struct session_info *info = user_data;
 343         GSList *list;
 344
 345         for (list = info->allowed_bearers;
 346                         list != NULL; list = list->next) {
 347                 struct bearer_info *bearer_info = list->data;
 348
 349                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 350                                                 &bearer_info->name);
 351         }
 352 }
 353
 354 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 355 {
 356         struct connman_service *service = user_data;
 357         struct connman_ipconfig *ipconfig_ipv4;
 358
 359         if (service == NULL)
 360                 return;
 361
 362         if (__connman_service_is_connected_state(service,
 363                                 CONNMAN_IPCONFIG_TYPE_IPV4) == FALSE) {
 364                 return;
 365         }
 366
 367         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 368         if (ipconfig_ipv4 == NULL)
 369                 return;
 370
 371         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 372 }
 373
 374 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 375 {
 376         struct connman_service *service = user_data;
 377         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 378
 379         if (service == NULL)
 380                 return;
 381
 382         if (__connman_service_is_connected_state(service,
 383                                 CONNMAN_IPCONFIG_TYPE_IPV6) == FALSE) {
 384                 return;
 385         }
 386
 387         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 388         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 389         if (ipconfig_ipv6 == NULL)
 390                 return;
 391
 392         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 393 }
 394
 395 static void append_notify(DBusMessageIter *dict,
 396                                         struct connman_session *session)
 397 {
 398         struct session_info *info = session->info;
 399         struct session_info *info_last = session->info_last;
 400         struct connman_service *service;
 401         const char *name, *ifname, *bearer;
 402
 403         if (session->append_all == TRUE ||
 404                         info->state != info_last->state) {
 405                 const char *state = state2string(info->state);
 406
 407                 connman_dbus_dict_append_basic(dict, "State",
 408                                                 DBUS_TYPE_STRING,
 409                                                 &state);
 410                 info_last->state = info->state;
 411         }
 412
 413         if (session->append_all == TRUE ||
 414                         info->entry != info_last->entry) {
 415                 if (info->entry == NULL) {
 416                         name = "";
 417                         ifname = "";
 418                         service = NULL;
 419                         bearer = "";
 420                 } else {
 421                         name = info->entry->name;
 422                         ifname = info->entry->ifname;
 423                         service = info->entry->service;
 424                         bearer = info->entry->bearer;
 425                 }
 426
 427                 connman_dbus_dict_append_basic(dict, "Name",
 428                                                 DBUS_TYPE_STRING,
 429                                                 &name);
 430
 431                 connman_dbus_dict_append_dict(dict, "IPv4",
 432                                                 append_ipconfig_ipv4,
 433                                                 service);
 434
 435                 connman_dbus_dict_append_dict(dict, "IPv6",
 436                                                 append_ipconfig_ipv6,
 437                                                 service);
 438
 439                 connman_dbus_dict_append_basic(dict, "Interface",
 440                                                 DBUS_TYPE_STRING,
 441                                                 &ifname);
 442
 443                 connman_dbus_dict_append_basic(dict, "Bearer",
 444                                                 DBUS_TYPE_STRING,
 445                                                 &bearer);
 446
 447                 info_last->entry = info->entry;
 448         }
 449
 450         if (session->append_all == TRUE || info->type != info_last->type) {
 451                 const char *type = type2string(info->type);
 452
 453                 connman_dbus_dict_append_basic(dict, "ConnectionType",
 454                                                 DBUS_TYPE_STRING,
 455                                                 &type);
 456                 info_last->type = info->type;
 457         }
 458
 459         if (session->append_all == TRUE ||
 460                         info->allowed_bearers != info_last->allowed_bearers) {
 461                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 462                                                 DBUS_TYPE_STRING,
 463                                                 append_allowed_bearers,
 464                                                 info);
 465                 info_last->allowed_bearers = info->allowed_bearers;
 466         }
 467
 468         session->append_all = FALSE;
 469 }
 470
 471 static connman_bool_t is_type_matching_state(enum connman_session_state *state,
 472                                                 enum connman_session_type type)
 473 {
 474         switch (type) {
 475         case CONNMAN_SESSION_TYPE_ANY:
 476                 return TRUE;
 477         case CONNMAN_SESSION_TYPE_LOCAL:
 478                 if (*state >= CONNMAN_SESSION_STATE_CONNECTED) {
 479                         *state = CONNMAN_SESSION_STATE_CONNECTED;
 480                         return TRUE;
 481                 }
 482
 483                 break;
 484         case CONNMAN_SESSION_TYPE_INTERNET:
 485                 if (*state == CONNMAN_SESSION_STATE_ONLINE)
 486                         return TRUE;
 487                 break;
 488         }
 489
 490         return FALSE;
 491 }
 492
 493 static connman_bool_t compute_notifiable_changes(struct connman_session *session)
 494 {
 495         struct session_info *info_last = session->info_last;
 496         struct session_info *info = session->info;
 497
 498         if (session->append_all == TRUE)
 499                 return TRUE;
 500
 501         if (info->state != info_last->state)
 502                 return TRUE;
 503
 504         if (info->entry != info_last->entry &&
 505                         info->state >= CONNMAN_SESSION_STATE_CONNECTED)
 506                 return TRUE;
 507
 508         if (info->allowed_bearers != info_last->allowed_bearers ||
 509                         info->type != info_last->type)
 510                 return TRUE;
 511
 512         return FALSE;
 513 }
 514
 515 static gboolean session_notify(gpointer user_data)
 516 {
 517         struct connman_session *session = user_data;
 518         DBusMessage *msg;
 519         DBusMessageIter array, dict;
 520
 521         if (compute_notifiable_changes(session) == FALSE)
 522                 return FALSE;
 523
 524         DBG("session %p owner %s notify_path %s", session,
 525                 session->owner, session->notify_path);
 526
 527         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 528                                                 CONNMAN_NOTIFICATION_INTERFACE,
 529                                                 "Update");
 530         if (msg == NULL)
 531                 return FALSE;
 532
 533         dbus_message_iter_init_append(msg, &array);
 534         connman_dbus_dict_open(&array, &dict);
 535
 536         append_notify(&dict, session);
 537
 538         connman_dbus_dict_close(&array, &dict);
 539
 540         g_dbus_send_message(connection, msg);
 541
 542         return FALSE;
 543 }
 544
 545 static void ipconfig_ipv4_changed(struct connman_session *session)
 546 {
 547         struct session_info *info = session->info;
 548
 549         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 550                                                 "IPv4", append_ipconfig_ipv4,
 551                                                 info->entry->service);
 552 }
 553
 554 static void ipconfig_ipv6_changed(struct connman_session *session)
 555 {
 556         struct session_info *info = session->info;
 557
 558         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 559                                                 "IPv6", append_ipconfig_ipv6,
 560                                                 info->entry->service);
 561 }
 562
 563 static connman_bool_t service_type_match(struct connman_session *session,
 564                                         struct connman_service *service)
 565 {
 566         struct session_info *info = session->info;
 567         GSList *list;
 568
 569         for (list = info->allowed_bearers;
 570                         list != NULL; list = list->next) {
 571                 struct bearer_info *bearer_info = list->data;
 572                 enum connman_service_type service_type;
 573
 574                 if (bearer_info->match_all == TRUE)
 575                         return TRUE;
 576
 577                 service_type = connman_service_get_type(service);
 578                 if (bearer_info->service_type == service_type)
 579                         return TRUE;
 580         }
 581
 582         return FALSE;
 583 }
 584
 585 static connman_bool_t service_match(struct connman_session *session,
 586                                         struct connman_service *service)
 587 {
 588         if (service_type_match(session, service) == FALSE)
 589                 return FALSE;
 590
 591         return TRUE;
 592 }
 593
 594 static int service_type_weight(enum connman_service_type type)
 595 {
 596         /*
 597          * The session doesn't care which service
 598          * to use. Nevertheless we have to sort them
 599          * according their type. The ordering is
 600          *
 601          * 1. Ethernet
 602          * 2. Bluetooth
 603          * 3. WiFi/WiMAX
 604          * 4. Cellular
 605          */
 606
 607         switch (type) {
 608         case CONNMAN_SERVICE_TYPE_ETHERNET:
 609                 return 4;
 610         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 611                 return 3;
 612         case CONNMAN_SERVICE_TYPE_WIFI:
 613         case CONNMAN_SERVICE_TYPE_WIMAX:
 614                 return 2;
 615         case CONNMAN_SERVICE_TYPE_CELLULAR:
 616                 return 1;
 617         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 618         case CONNMAN_SERVICE_TYPE_SYSTEM:
 619         case CONNMAN_SERVICE_TYPE_GPS:
 620         case CONNMAN_SERVICE_TYPE_VPN:
 621         case CONNMAN_SERVICE_TYPE_GADGET:
 622                 break;
 623         }
 624
 625         return 0;
 626 }
 627
 628 static gint sort_allowed_bearers(struct connman_service *service_a,
 629                                         struct connman_service *service_b,
 630                                         struct connman_session *session)
 631 {
 632         struct session_info *info = session->info;
 633         GSList *list;
 634         enum connman_service_type type_a, type_b;
 635         int weight_a, weight_b;
 636
 637         type_a = connman_service_get_type(service_a);
 638         type_b = connman_service_get_type(service_b);
 639
 640         for (list = info->allowed_bearers;
 641                         list != NULL; list = list->next) {
 642                 struct bearer_info *bearer_info = list->data;
 643
 644                 if (bearer_info->match_all == TRUE) {
 645                         if (type_a != type_b) {
 646                                 weight_a = service_type_weight(type_a);
 647                                 weight_b = service_type_weight(type_b);
 648
 649                                 if (weight_a > weight_b)
 650                                         return -1;
 651
 652                                 if (weight_a < weight_b)
 653                                         return 1;
 654
 655                                 return 0;
 656                         }
 657                 }
 658
 659                 if (type_a == bearer_info->service_type &&
 660                                 type_b == bearer_info->service_type) {
 661                         return 0;
 662                 }
 663
 664                 if (type_a == bearer_info->service_type &&
 665                                 type_b != bearer_info->service_type) {
 666                         return -1;
 667                 }
 668
 669                 if (type_a != bearer_info->service_type &&
 670                                 type_b == bearer_info->service_type) {
 671                         return 1;
 672                 }
 673         }
 674
 675         return 0;
 676 }
 677
 678 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 679 {
 680         struct service_entry *entry_a = (void *)a;
 681         struct service_entry *entry_b = (void *)b;
 682         struct connman_session *session = user_data;
 683
 684         return sort_allowed_bearers(entry_a->service, entry_b->service,
 685                                 session);
 686 }
 687
 688 static void cleanup_session(gpointer user_data)
 689 {
 690         struct connman_session *session = user_data;
 691         struct session_info *info = session->info;
 692
 693         DBG("remove %s", session->session_path);
 694
 695         g_hash_table_destroy(session->service_hash);
 696         g_sequence_free(session->service_list);
 697
 698         if (info->entry != NULL &&
 699                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 700                 __connman_service_disconnect(info->entry->service);
 701         }
 702
 703         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 704         g_slist_free(info->allowed_bearers);
 705
 706         g_free(session->owner);
 707         g_free(session->session_path);
 708         g_free(session->notify_path);
 709         g_free(session->info);
 710         g_free(session->info_last);
 711
 712         g_free(session);
 713 }
 714
 715 static enum connman_session_state service_to_session_state(enum connman_service_state state)
 716 {
 717         switch (state) {
 718         case CONNMAN_SERVICE_STATE_UNKNOWN:
 719         case CONNMAN_SERVICE_STATE_IDLE:
 720         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 721         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 722         case CONNMAN_SERVICE_STATE_DISCONNECT:
 723         case CONNMAN_SERVICE_STATE_FAILURE:
 724                 break;
 725         case CONNMAN_SERVICE_STATE_READY:
 726                 return CONNMAN_SESSION_STATE_CONNECTED;
 727         case CONNMAN_SERVICE_STATE_ONLINE:
 728                 return CONNMAN_SESSION_STATE_ONLINE;
 729         }
 730
 731         return CONNMAN_SESSION_STATE_DISCONNECTED;
 732 }
 733
 734 static connman_bool_t is_connected(enum connman_service_state state)
 735 {
 736         switch (state) {
 737         case CONNMAN_SERVICE_STATE_UNKNOWN:
 738         case CONNMAN_SERVICE_STATE_IDLE:
 739         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 740         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 741         case CONNMAN_SERVICE_STATE_DISCONNECT:
 742         case CONNMAN_SERVICE_STATE_FAILURE:
 743                 break;
 744         case CONNMAN_SERVICE_STATE_READY:
 745         case CONNMAN_SERVICE_STATE_ONLINE:
 746                 return TRUE;
 747         }
 748
 749         return FALSE;
 750 }
 751
 752 static connman_bool_t is_connecting(enum connman_service_state state)
 753 {
 754         switch (state) {
 755         case CONNMAN_SERVICE_STATE_UNKNOWN:
 756         case CONNMAN_SERVICE_STATE_IDLE:
 757                 break;
 758         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 759         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 760                 return TRUE;
 761         case CONNMAN_SERVICE_STATE_DISCONNECT:
 762         case CONNMAN_SERVICE_STATE_FAILURE:
 763         case CONNMAN_SERVICE_STATE_READY:
 764         case CONNMAN_SERVICE_STATE_ONLINE:
 765                 break;
 766         }
 767
 768         return FALSE;
 769 }
 770
 771 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 772 {
 773         switch (reason) {
 774         case CONNMAN_SESSION_REASON_UNKNOWN:
 775         case CONNMAN_SESSION_REASON_FREE_RIDE:
 776                 break;
 777         case CONNMAN_SESSION_REASON_CONNECT:
 778                 return TRUE;
 779         }
 780
 781         return FALSE;
 782 }
 783
 784 static connman_bool_t explicit_disconnect(struct session_info *info)
 785 {
 786         if (info->entry == NULL)
 787                 return FALSE;
 788
 789         DBG("reason %s service %p state %d",
 790                 reason2string(info->entry->reason),
 791                 info->entry->service, info->entry->state);
 792
 793         if (info->entry->reason == CONNMAN_SESSION_REASON_UNKNOWN)
 794                 return FALSE;
 795
 796         if (explicit_connect(info->entry->reason) == FALSE)
 797                 return FALSE;
 798
 799         if (__connman_service_session_dec(info->entry->service) == FALSE)
 800                 return FALSE;
 801
 802         return TRUE;
 803 }
 804
 805 struct pending_data {
 806         unsigned int timeout;
 807         struct service_entry *entry;
 808         gboolean (*cb)(gpointer);
 809 };
 810
 811 static void pending_timeout_free(gpointer data, gpointer user_data)
 812 {
 813         struct pending_data *pending = data;
 814
 815         DBG("pending %p timeout %d", pending, pending->timeout);
 816         g_source_remove(pending->timeout);
 817         g_free(pending);
 818 }
 819
 820 static void pending_timeout_remove_all(struct service_entry *entry)
 821 {
 822         DBG("");
 823
 824         g_slist_foreach(entry->pending_timeouts, pending_timeout_free, NULL);
 825         g_slist_free(entry->pending_timeouts);
 826         entry->pending_timeouts = NULL;
 827 }
 828
 829 static gboolean pending_timeout_cb(gpointer data)
 830 {
 831         struct pending_data *pending = data;
 832         struct service_entry *entry = pending->entry;
 833         gboolean ret;
 834
 835         DBG("pending %p timeout %d", pending, pending->timeout);
 836
 837         ret = pending->cb(pending->entry);
 838         if (ret == FALSE) {
 839                 entry->pending_timeouts =
 840                         g_slist_remove(entry->pending_timeouts,
 841                                         pending);
 842                 g_free(pending);
 843         }
 844         return ret;
 845 }
 846
 847 static connman_bool_t pending_timeout_add(unsigned int seconds,
 848                                         gboolean (*cb)(gpointer),
 849                                         struct service_entry *entry)
 850 {
 851         struct pending_data *pending = g_try_new0(struct pending_data, 1);
 852
 853         if (pending == NULL || cb == NULL || entry == NULL) {
 854                 g_free(pending);
 855                 return FALSE;
 856         }
 857
 858         pending->cb = cb;
 859         pending->entry = entry;
 860         pending->timeout = g_timeout_add_seconds(seconds, pending_timeout_cb,
 861                                                 pending);
 862         entry->pending_timeouts = g_slist_prepend(entry->pending_timeouts,
 863                                                 pending);
 864
 865         DBG("pending %p entry %p timeout id %d", pending, entry,
 866                 pending->timeout);
 867
 868         return TRUE;
 869 }
 870
 871 static gboolean call_disconnect(gpointer user_data)
 872 {
 873         struct service_entry *entry = user_data;
 874         struct connman_service *service = entry->service;
 875
 876         /*
 877          * TODO: We should mark this entry as pending work. In case
 878          * disconnect fails we just unassign this session from the
 879          * service and can't do anything later on it
 880          */
 881         DBG("disconnect service %p", service);
 882         __connman_service_disconnect(service);
 883
 884         return FALSE;
 885 }
 886
 887 static gboolean call_connect(gpointer user_data)
 888 {
 889         struct service_entry *entry = user_data;
 890         struct connman_service *service = entry->service;
 891
 892         DBG("connect service %p", service);
 893         __connman_service_connect(service);
 894
 895         return FALSE;
 896 }
 897
 898 static void deselect_service(struct session_info *info)
 899 {
 900         struct service_entry *entry;
 901         connman_bool_t disconnect, connected;
 902
 903         DBG("");
 904
 905         if (info->entry == NULL)
 906                 return;
 907
 908         disconnect = explicit_disconnect(info);
 909
 910         connected = is_connecting(info->entry->state) == TRUE ||
 911                         is_connected(info->entry->state) == TRUE;
 912
 913         info->state = CONNMAN_SESSION_STATE_DISCONNECTED;
 914         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 915
 916         entry = info->entry;
 917         info->entry = NULL;
 918
 919         DBG("disconnect %d connected %d", disconnect, connected);
 920
 921         if (disconnect == TRUE && connected == TRUE)
 922                 pending_timeout_add(0, call_disconnect, entry);
 923 }
 924
 925 static void deselect_and_disconnect(struct connman_session *session)
 926 {
 927         struct session_info *info = session->info;
 928
 929         deselect_service(info);
 930
 931         info->reason = CONNMAN_SESSION_REASON_FREE_RIDE;
 932 }
 933
 934 static void select_connected_service(struct session_info *info,
 935                                         struct service_entry *entry)
 936 {
 937         enum connman_session_state state;
 938
 939         state = service_to_session_state(entry->state);
 940         if (is_type_matching_state(&state, info->type) == FALSE)
 941                 return;
 942
 943         info->state = state;
 944
 945         info->entry = entry;
 946         info->entry->reason = info->reason;
 947
 948         if (explicit_connect(info->reason) == FALSE)
 949                 return;
 950
 951         __connman_service_session_inc(info->entry->service);
 952 }
 953
 954 static void select_offline_service(struct session_info *info,
 955                                         struct service_entry *entry)
 956 {
 957         if (explicit_connect(info->reason) == FALSE)
 958                 return;
 959
 960         info->state = service_to_session_state(entry->state);
 961
 962         info->entry = entry;
 963         info->entry->reason = info->reason;
 964
 965         __connman_service_session_inc(info->entry->service);
 966         pending_timeout_add(0, call_connect, entry);
 967 }
 968
 969 static void select_service(struct session_info *info,
 970                                 struct service_entry *entry)
 971 {
 972         DBG("service %p", entry->service);
 973
 974         if (is_connected(entry->state) == TRUE)
 975                 select_connected_service(info, entry);
 976         else
 977                 select_offline_service(info, entry);
 978 }
 979
 980 static void select_and_connect(struct connman_session *session,
 981                                 enum connman_session_reason reason)
 982 {
 983         struct session_info *info = session->info;
 984         struct service_entry *entry = NULL;
 985         GSequenceIter *iter;
 986
 987         DBG("session %p reason %s", session, reason2string(reason));
 988
 989         info->reason = reason;
 990
 991         iter = g_sequence_get_begin_iter(session->service_list);
 992
 993         while (g_sequence_iter_is_end(iter) == FALSE) {
 994                 entry = g_sequence_get(iter);
 995
 996                 switch (entry->state) {
 997                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 998                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 999                 case CONNMAN_SERVICE_STATE_READY:
1000                 case CONNMAN_SERVICE_STATE_ONLINE:
1001                 case CONNMAN_SERVICE_STATE_IDLE:
1002                 case CONNMAN_SERVICE_STATE_DISCONNECT:
1003                         select_service(info, entry);
1004                         return;
1005                 case CONNMAN_SERVICE_STATE_UNKNOWN:
1006                 case CONNMAN_SERVICE_STATE_FAILURE:
1007                         break;
1008                 }
1009
1010                 iter = g_sequence_iter_next(iter);
1011         }
1012 }
1013
1014 static struct service_entry *create_service_entry(struct connman_service *service,
1015                                         const char *name,
1016                                         enum connman_service_state state)
1017 {
1018         struct service_entry *entry;
1019         enum connman_service_type type;
1020         int idx;
1021
1022         entry = g_try_new0(struct service_entry, 1);
1023         if (entry == NULL)
1024                 return entry;
1025
1026         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
1027         entry->state = state;
1028         if (name != NULL)
1029                 entry->name = name;
1030         else
1031                 entry->name = "";
1032         entry->service = service;
1033
1034         idx = __connman_service_get_index(entry->service);
1035         entry->ifname = connman_inet_ifname(idx);
1036         if (entry->ifname == NULL)
1037                 entry->ifname = g_strdup("");
1038
1039         type = connman_service_get_type(entry->service);
1040         entry->bearer = service2bearer(type);
1041
1042         return entry;
1043 }
1044
1045 static void destroy_service_entry(gpointer data)
1046 {
1047         struct service_entry *entry = data;
1048
1049         pending_timeout_remove_all(entry);
1050         g_free(entry->ifname);
1051
1052         g_free(entry);
1053 }
1054
1055 static void populate_service_list(struct connman_session *session)
1056 {
1057         struct service_entry *entry;
1058         GSequenceIter *iter;
1059
1060         session->service_hash =
1061                 g_hash_table_new_full(g_direct_hash, g_direct_equal,
1062                                         NULL, NULL);
1063         session->service_list = __connman_service_get_list(session,
1064                                                         service_match,
1065                                                         create_service_entry,
1066                                                         destroy_service_entry);
1067
1068         g_sequence_sort(session->service_list, sort_services, session);
1069
1070         iter = g_sequence_get_begin_iter(session->service_list);
1071
1072         while (g_sequence_iter_is_end(iter) == FALSE) {
1073                 entry = g_sequence_get(iter);
1074
1075                 DBG("service %p type %s name %s", entry->service,
1076                         service2bearer(connman_service_get_type(entry->service)),
1077                         entry->name);
1078
1079                 g_hash_table_replace(session->service_hash,
1080                                         entry->service, iter);
1081
1082                 iter = g_sequence_iter_next(iter);
1083         }
1084 }
1085
1086 static void session_changed(struct connman_session *session,
1087                                 enum connman_session_trigger trigger)
1088 {
1089         struct session_info *info = session->info;
1090         struct session_info *info_last = session->info_last;
1091         GSequenceIter *service_iter = NULL, *service_iter_last = NULL;
1092         GSequence *service_list_last;
1093         GHashTable *service_hash_last;
1094
1095         /*
1096          * TODO: This only a placeholder for the 'real' algorithm to
1097          * play a bit around. So we are going to improve it step by step.
1098          */
1099
1100         DBG("session %p trigger %s reason %s", session, trigger2string(trigger),
1101                                                 reason2string(info->reason));
1102
1103         if (info->entry != NULL) {
1104                 enum connman_session_state state;
1105
1106                 state = service_to_session_state(info->entry->state);
1107
1108                 if (is_type_matching_state(&state, info->type) == TRUE)
1109                         info->state = state;
1110         }
1111
1112         switch (trigger) {
1113         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
1114                 DBG("ignore session changed event");
1115                 return;
1116         case CONNMAN_SESSION_TRIGGER_SETTING:
1117                 if (info->allowed_bearers != info_last->allowed_bearers) {
1118
1119                         service_hash_last = session->service_hash;
1120                         service_list_last = session->service_list;
1121
1122                         populate_service_list(session);
1123
1124                         if (info->entry != NULL) {
1125                                 service_iter_last = g_hash_table_lookup(
1126                                                         service_hash_last,
1127                                                         info->entry->service);
1128                                 service_iter = g_hash_table_lookup(
1129                                                         session->service_hash,
1130                                                         info->entry->service);
1131                         }
1132
1133                         if (service_iter == NULL && service_iter_last != NULL) {
1134                                 /*
1135                                  * The currently selected service is
1136                                  * not part of this session anymore.
1137                                  */
1138                                 deselect_and_disconnect(session);
1139                         }
1140
1141                         g_hash_table_remove_all(service_hash_last);
1142                         g_sequence_free(service_list_last);
1143                 }
1144
1145                 if (info->type != info_last->type) {
1146                         if (info->state >= CONNMAN_SESSION_STATE_CONNECTED &&
1147                                         is_type_matching_state(&info->state,
1148                                                         info->type) == FALSE)
1149                                 deselect_and_disconnect(session);
1150                 }
1151
1152                 if (info->state == CONNMAN_SESSION_STATE_DISCONNECTED) {
1153                         select_and_connect(session,
1154                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1155                 }
1156
1157                 break;
1158         case CONNMAN_SESSION_TRIGGER_ECALL:
1159                 /*
1160                  * For the time beeing we fallback to normal connect
1161                  * strategy.
1162                  */
1163         case CONNMAN_SESSION_TRIGGER_CONNECT:
1164                 if (info->state >= CONNMAN_SESSION_STATE_CONNECTED) {
1165                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
1166                                 break;
1167                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
1168                         __connman_service_session_inc(info->entry->service);
1169                         break;
1170                 }
1171
1172                 if (info->entry != NULL &&
1173                                 is_connecting(info->entry->state) == TRUE) {
1174                         break;
1175                 }
1176
1177                 select_and_connect(session,
1178                                 CONNMAN_SESSION_REASON_CONNECT);
1179
1180                 break;
1181         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
1182                 deselect_and_disconnect(session);
1183
1184                 break;
1185         case CONNMAN_SESSION_TRIGGER_SERVICE:
1186                 if (info->entry != NULL &&
1187                         (is_connecting(info->entry->state) == TRUE ||
1188                                 is_connected(info->entry->state) == TRUE)) {
1189                         break;
1190                 }
1191
1192                 deselect_and_disconnect(session);
1193
1194                 if (info->reason == CONNMAN_SESSION_REASON_FREE_RIDE) {
1195                         select_and_connect(session, info->reason);
1196                 }
1197
1198                 break;
1199         }
1200
1201         session_notify(session);
1202 }
1203
1204 static DBusMessage *connect_session(DBusConnection *conn,
1205                                         DBusMessage *msg, void *user_data)
1206 {
1207         struct connman_session *session = user_data;
1208
1209         DBG("session %p", session);
1210
1211         if (ecall_session != NULL) {
1212                 if (ecall_session->ecall == TRUE && ecall_session != session)
1213                         return __connman_error_failed(msg, EBUSY);
1214
1215                 session->ecall = TRUE;
1216                 session_changed(session, CONNMAN_SESSION_TRIGGER_ECALL);
1217         } else
1218                 session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1219
1220         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1221 }
1222
1223 static DBusMessage *disconnect_session(DBusConnection *conn,
1224                                         DBusMessage *msg, void *user_data)
1225 {
1226         struct connman_session *session = user_data;
1227
1228         DBG("session %p", session);
1229
1230         if (ecall_session != NULL) {
1231                 if (ecall_session->ecall == TRUE && ecall_session != session)
1232                         return __connman_error_failed(msg, EBUSY);
1233
1234                 session->ecall = FALSE;
1235         }
1236
1237         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1238
1239         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1240 }
1241
1242 static DBusMessage *change_session(DBusConnection *conn,
1243                                         DBusMessage *msg, void *user_data)
1244 {
1245         struct connman_session *session = user_data;
1246         struct session_info *info = session->info;
1247         DBusMessageIter iter, value;
1248         const char *name;
1249         const char *val;
1250         GSList *allowed_bearers;
1251
1252         DBG("session %p", session);
1253         if (dbus_message_iter_init(msg, &iter) == FALSE)
1254                 return __connman_error_invalid_arguments(msg);
1255
1256         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
1257                 return __connman_error_invalid_arguments(msg);
1258
1259         dbus_message_iter_get_basic(&iter, &name);
1260         dbus_message_iter_next(&iter);
1261
1262         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1263                 return __connman_error_invalid_arguments(msg);
1264
1265         dbus_message_iter_recurse(&iter, &value);
1266
1267         switch (dbus_message_iter_get_arg_type(&value)) {
1268         case DBUS_TYPE_ARRAY:
1269                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1270                         allowed_bearers = session_parse_allowed_bearers(&value);
1271
1272                         g_slist_foreach(info->allowed_bearers,
1273                                         cleanup_bearer_info, NULL);
1274                         g_slist_free(info->allowed_bearers);
1275
1276                         if (allowed_bearers == NULL) {
1277                                 allowed_bearers = session_allowed_bearers_any();
1278
1279                                 if (allowed_bearers == NULL)
1280                                         return __connman_error_failed(msg, ENOMEM);
1281                         }
1282
1283                         info->allowed_bearers = allowed_bearers;
1284                 } else {
1285                         goto err;
1286                 }
1287                 break;
1288         case DBUS_TYPE_STRING:
1289                 if (g_str_equal(name, "ConnectionType") == TRUE) {
1290                         dbus_message_iter_get_basic(&value, &val);
1291                         info->type = string2type(val);
1292                 } else {
1293                         goto err;
1294                 }
1295                 break;
1296         default:
1297                 goto err;
1298         }
1299
1300         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1301
1302         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1303
1304 err:
1305         return __connman_error_invalid_arguments(msg);
1306 }
1307
1308 static void release_session(gpointer key, gpointer value, gpointer user_data)
1309 {
1310         struct connman_session *session = value;
1311         DBusMessage *message;
1312
1313         DBG("owner %s path %s", session->owner, session->notify_path);
1314
1315         if (session->notify_watch > 0)
1316                 g_dbus_remove_watch(connection, session->notify_watch);
1317
1318         g_dbus_unregister_interface(connection, session->session_path,
1319                                                 CONNMAN_SESSION_INTERFACE);
1320
1321         message = dbus_message_new_method_call(session->owner,
1322                                                 session->notify_path,
1323                                                 CONNMAN_NOTIFICATION_INTERFACE,
1324                                                 "Release");
1325         if (message == NULL)
1326                 return;
1327
1328         dbus_message_set_no_reply(message, TRUE);
1329
1330         g_dbus_send_message(connection, message);
1331 }
1332
1333 static int session_disconnect(struct connman_session *session)
1334 {
1335         DBG("session %p, %s", session, session->owner);
1336
1337         if (session->notify_watch > 0)
1338                 g_dbus_remove_watch(connection, session->notify_watch);
1339
1340         g_dbus_unregister_interface(connection, session->session_path,
1341                                                 CONNMAN_SESSION_INTERFACE);
1342
1343         deselect_and_disconnect(session);
1344
1345         g_hash_table_remove(session_hash, session->session_path);
1346
1347         return 0;
1348 }
1349
1350 static void owner_disconnect(DBusConnection *conn, void *user_data)
1351 {
1352         struct connman_session *session = user_data;
1353
1354         DBG("session %p, %s died", session, session->owner);
1355
1356         session_disconnect(session);
1357 }
1358
1359 static DBusMessage *destroy_session(DBusConnection *conn,
1360                                         DBusMessage *msg, void *user_data)
1361 {
1362         struct connman_session *session = user_data;
1363
1364         DBG("session %p", session);
1365
1366         if (ecall_session != NULL && ecall_session != session)
1367                 return __connman_error_failed(msg, EBUSY);
1368
1369         session_disconnect(session);
1370
1371         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1372 }
1373
1374 static const GDBusMethodTable session_methods[] = {
1375         { GDBUS_METHOD("Destroy", NULL, NULL, destroy_session) },
1376         { GDBUS_METHOD("Connect", NULL, NULL, connect_session) },
1377         { GDBUS_METHOD("Disconnect", NULL, NULL,
1378                         disconnect_session ) },
1379         { GDBUS_METHOD("Change",
1380                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
1381                         NULL, change_session) },
1382         { },
1383 };
1384
1385 int __connman_session_create(DBusMessage *msg)
1386 {
1387         const char *owner, *notify_path;
1388         char *session_path = NULL;
1389         DBusMessageIter iter, array;
1390         struct connman_session *session = NULL;
1391         struct session_info *info, *info_last;
1392
1393         enum connman_session_type type = CONNMAN_SESSION_TYPE_ANY;
1394         connman_bool_t priority;
1395         connman_bool_t ecall_app;
1396         enum connman_session_roaming_policy roaming_policy;
1397         char *roaming_policy_str;
1398         GSList *allowed_bearers = NULL;
1399         int err;
1400
1401         owner = dbus_message_get_sender(msg);
1402
1403         DBG("owner %s", owner);
1404
1405         if (ecall_session != NULL && ecall_session->ecall == TRUE) {
1406                 /*
1407                  * If there is an emergency call already going on,
1408                  * ignore session creation attempt
1409                  */
1410                 err = -EBUSY;
1411                 goto err;
1412         }
1413
1414         dbus_message_iter_init(msg, &iter);
1415         dbus_message_iter_recurse(&iter, &array);
1416
1417         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1418                 DBusMessageIter entry, value;
1419                 const char *key, *val;
1420
1421                 dbus_message_iter_recurse(&array, &entry);
1422                 dbus_message_iter_get_basic(&entry, &key);
1423
1424                 dbus_message_iter_next(&entry);
1425                 dbus_message_iter_recurse(&entry, &value);
1426
1427                 switch (dbus_message_iter_get_arg_type(&value)) {
1428                 case DBUS_TYPE_ARRAY:
1429                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1430                                 allowed_bearers =
1431                                         session_parse_allowed_bearers(&value);
1432                         } else {
1433                                 return -EINVAL;
1434                         }
1435                         break;
1436                 case DBUS_TYPE_STRING:
1437                         if (g_str_equal(key, "ConnectionType") == TRUE) {
1438                                 dbus_message_iter_get_basic(&value, &val);
1439                                 type = string2type(val);
1440                         } else {
1441                                 return -EINVAL;
1442                         }
1443                 }
1444                 dbus_message_iter_next(&array);
1445         }
1446
1447         dbus_message_iter_next(&iter);
1448         dbus_message_iter_get_basic(&iter, &notify_path);
1449
1450         if (notify_path == NULL) {
1451                 err = -EINVAL;
1452                 goto err;
1453         }
1454
1455         session_path = g_strdup_printf("/sessions%s", notify_path);
1456         if (session_path == NULL) {
1457                 err = -ENOMEM;
1458                 goto err;
1459         }
1460
1461         session = g_hash_table_lookup(session_hash, session_path);
1462         if (session != NULL) {
1463                 session = NULL;
1464                 err = -EEXIST;
1465                 goto err;
1466         }
1467
1468         session = g_try_new0(struct connman_session, 1);
1469         if (session == NULL) {
1470                 err = -ENOMEM;
1471                 goto err;
1472         }
1473
1474         session->info = g_try_new0(struct session_info, 1);
1475         if (session->info == NULL) {
1476                 err = -ENOMEM;
1477                 goto err;
1478         }
1479
1480         session->info_last = g_try_new0(struct session_info, 1);
1481         if (session->info_last == NULL) {
1482                 err = -ENOMEM;
1483                 goto err;
1484         }
1485
1486         info = session->info;
1487         info_last = session->info_last;
1488
1489         config_get_bool(owner, "Priority", &priority);
1490         config_get_bool(owner, "EmergencyCall", &ecall_app);
1491         config_get_string(owner, "RoamingPolicy", &roaming_policy_str);
1492         roaming_policy = string2roamingpolicy(roaming_policy_str);
1493
1494         session->owner = g_strdup(owner);
1495         session->session_path = session_path;
1496         session->notify_path = g_strdup(notify_path);
1497         session->notify_watch =
1498                 g_dbus_add_disconnect_watch(connection, session->owner,
1499                                         owner_disconnect, session, NULL);
1500         if (ecall_app == TRUE)
1501                 ecall_session = session;
1502
1503         info->state = CONNMAN_SESSION_STATE_DISCONNECTED;
1504         info->type = type;
1505         info->priority = priority;
1506         info->roaming_policy = roaming_policy;
1507         info->entry = NULL;
1508
1509         if (allowed_bearers == NULL) {
1510                 info->allowed_bearers =
1511                                 session_allowed_bearers_any();
1512
1513                 if (info->allowed_bearers == NULL) {
1514                         err = -ENOMEM;
1515                         goto err;
1516                 }
1517         } else {
1518                 info->allowed_bearers = allowed_bearers;
1519         }
1520
1521         g_hash_table_replace(session_hash, session->session_path, session);
1522
1523         DBG("add %s", session->session_path);
1524
1525         if (g_dbus_register_interface(connection, session->session_path,
1526                                         CONNMAN_SESSION_INTERFACE,
1527                                         session_methods, NULL,
1528                                         NULL, session, NULL) == FALSE) {
1529                 connman_error("Failed to register %s", session->session_path);
1530                 g_hash_table_remove(session_hash, session->session_path);
1531                 session = NULL;
1532
1533                 err = -EINVAL;
1534                 goto err;
1535         }
1536
1537         g_dbus_send_reply(connection, msg,
1538                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1539                                 DBUS_TYPE_INVALID);
1540
1541
1542         populate_service_list(session);
1543
1544         info_last->state = info->state;
1545         info_last->priority = info->priority;
1546         info_last->roaming_policy = info->roaming_policy;
1547         info_last->entry = info->entry;
1548         info_last->allowed_bearers = info->allowed_bearers;
1549
1550         session->append_all = TRUE;
1551
1552         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1553
1554         return 0;
1555
1556 err:
1557         connman_error("Failed to create session");
1558
1559         if (session != NULL) {
1560                 if (session->info_last != NULL)
1561                         g_free(session->info_last);
1562                 if (session->info != NULL)
1563                         g_free(session->info);
1564                 g_free(session);
1565         }
1566
1567         g_free(session_path);
1568
1569         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1570         g_slist_free(allowed_bearers);
1571
1572         return err;
1573 }
1574
1575 int __connman_session_destroy(DBusMessage *msg)
1576 {
1577         const char *owner, *session_path;
1578         struct connman_session *session;
1579
1580         owner = dbus_message_get_sender(msg);
1581
1582         DBG("owner %s", owner);
1583
1584         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1585                                                         DBUS_TYPE_INVALID);
1586         if (session_path == NULL)
1587                 return -EINVAL;
1588
1589         session = g_hash_table_lookup(session_hash, session_path);
1590         if (session == NULL)
1591                 return -EINVAL;
1592
1593         if (g_strcmp0(owner, session->owner) != 0)
1594                 return -EACCES;
1595
1596         session_disconnect(session);
1597
1598         return 0;
1599 }
1600
1601 connman_bool_t __connman_session_mode()
1602 {
1603         return sessionmode;
1604 }
1605
1606 void __connman_session_set_mode(connman_bool_t enable)
1607 {
1608         DBG("enable %d", enable);
1609
1610         if (sessionmode != enable) {
1611                 sessionmode = enable;
1612
1613                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
1614                                 CONNMAN_MANAGER_INTERFACE, "SessionMode",
1615                                 DBUS_TYPE_BOOLEAN, &sessionmode);
1616         }
1617
1618         if (sessionmode == TRUE)
1619                 __connman_service_disconnect_all();
1620 }
1621
1622 static void service_add(struct connman_service *service,
1623                         const char *name)
1624 {
1625         GHashTableIter iter;
1626         GSequenceIter *iter_service_list;
1627         gpointer key, value;
1628         struct connman_session *session;
1629         struct service_entry *entry;
1630
1631         DBG("service %p", service);
1632
1633         g_hash_table_iter_init(&iter, session_hash);
1634
1635         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1636                 session = value;
1637
1638                 if (service_match(session, service) == FALSE)
1639                         continue;
1640
1641                 entry = create_service_entry(service, name,
1642                                                 CONNMAN_SERVICE_STATE_IDLE);
1643                 if (entry == NULL)
1644                         continue;
1645
1646                 iter_service_list =
1647                         g_sequence_insert_sorted(session->service_list,
1648                                                         entry, sort_services,
1649                                                         session);
1650
1651                 g_hash_table_replace(session->service_hash, service,
1652                                         iter_service_list);
1653
1654                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1655         }
1656 }
1657
1658 static void service_remove(struct connman_service *service)
1659 {
1660
1661         GHashTableIter iter;
1662         gpointer key, value;
1663         struct connman_session *session;
1664         struct session_info *info;
1665
1666         DBG("service %p", service);
1667
1668         g_hash_table_iter_init(&iter, session_hash);
1669
1670         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1671                 GSequenceIter *seq_iter;
1672                 session = value;
1673                 info = session->info;
1674
1675                 seq_iter = g_hash_table_lookup(session->service_hash, service);
1676                 if (seq_iter == NULL)
1677                         continue;
1678
1679                 g_sequence_remove(seq_iter);
1680
1681                 if (info->entry != NULL && info->entry->service == service)
1682                         info->entry = NULL;
1683                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1684         }
1685 }
1686
1687 static void service_state_changed(struct connman_service *service,
1688                                         enum connman_service_state state)
1689 {
1690         GHashTableIter iter;
1691         gpointer key, value;
1692
1693         DBG("service %p state %d", service, state);
1694
1695         g_hash_table_iter_init(&iter, session_hash);
1696
1697         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1698                 struct connman_session *session = value;
1699                 GSequenceIter *service_iter;
1700
1701                 service_iter = g_hash_table_lookup(session->service_hash, service);
1702                 if (service_iter != NULL) {
1703                         struct service_entry *entry;
1704
1705                         entry = g_sequence_get(service_iter);
1706                         entry->state = state;
1707                 }
1708
1709                 session_changed(session,
1710                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1711         }
1712 }
1713
1714 static void ipconfig_changed(struct connman_service *service,
1715                                 struct connman_ipconfig *ipconfig)
1716 {
1717         GHashTableIter iter;
1718         gpointer key, value;
1719         struct connman_session *session;
1720         struct session_info *info;
1721         enum connman_ipconfig_type type;
1722
1723         DBG("service %p ipconfig %p", service, ipconfig);
1724
1725         type = __connman_ipconfig_get_config_type(ipconfig);
1726
1727         g_hash_table_iter_init(&iter, session_hash);
1728
1729         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1730                 session = value;
1731                 info = session->info;
1732
1733                 if (info->state == CONNMAN_SESSION_STATE_DISCONNECTED)
1734                         continue;
1735
1736                 if (info->entry != NULL && info->entry->service == service) {
1737                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1738                                 ipconfig_ipv4_changed(session);
1739                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1740                                 ipconfig_ipv6_changed(session);
1741                 }
1742         }
1743 }
1744
1745 static struct connman_notifier session_notifier = {
1746         .name                   = "session",
1747         .service_add            = service_add,
1748         .service_remove         = service_remove,
1749         .service_state_changed  = service_state_changed,
1750         .ipconfig_changed       = ipconfig_changed,
1751 };
1752
1753 static struct connman_session *session_lookup_by_id(const char *id)
1754 {
1755         struct connman_session *session;
1756         GHashTableIter iter;
1757         gpointer key, value;
1758
1759         DBG("id %s", id);
1760
1761         g_hash_table_iter_init(&iter, session_hash);
1762
1763         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1764                 session = value;
1765
1766                 if (g_strcmp0(session->owner, id) == FALSE)
1767                         continue;
1768
1769                 return session;
1770         }
1771
1772         DBG("No session found by id %s", id);
1773
1774         return NULL;
1775 }
1776
1777 int connman_session_update_bool(const char *id, const char *key,
1778                                         connman_bool_t val)
1779 {
1780         struct connman_session *session;
1781         struct session_info *info;
1782
1783         session = session_lookup_by_id(id);
1784         if (session == NULL)
1785                 return -EINVAL;
1786
1787         info = session->info;
1788         if (info == NULL)
1789                 return 0;
1790
1791         DBG("%s %d", key, val);
1792
1793         return -EINVAL;
1794 }
1795
1796 int connman_session_update_string(const char *id, const char *key,
1797                                         const char *val)
1798 {
1799         struct connman_session *session;
1800         struct session_info *info;
1801
1802         session = session_lookup_by_id(id);
1803         if (session == NULL)
1804                 return -EINVAL;
1805
1806         info = session->info;
1807         if (info == NULL)
1808                 return 0;
1809
1810         DBG("%s %s", key, val);
1811
1812         return -EINVAL;
1813 }
1814
1815 int connman_session_config_register(struct connman_session_config *config)
1816 {
1817         DBG("name %s", config->name);
1818
1819         if (session_config != NULL) {
1820                 connman_warn("A session configuration plugin '%s' is "
1821                                 "already registerd. Skipping registration "
1822                                 "of plugin '%s'",
1823                                 session_config->name, config->name);
1824                 return -EALREADY;
1825         }
1826
1827         session_config = config;
1828
1829         return 0;
1830 }
1831
1832 void connman_session_config_unregister(struct connman_session_config *config)
1833 {
1834         DBG("name %s", config->name);
1835
1836         if (config != session_config) {
1837                 connman_warn("Trying to unregister session configuration "
1838                                 "plugin '%s'", config->name);
1839                 return;
1840         }
1841
1842         session_config = NULL;
1843 }
1844
1845 int __connman_session_init(void)
1846 {
1847         int err;
1848
1849         DBG("");
1850
1851         connection = connman_dbus_get_connection();
1852         if (connection == NULL)
1853                 return -1;
1854
1855         err = connman_notifier_register(&session_notifier);
1856         if (err < 0) {
1857                 dbus_connection_unref(connection);
1858                 return err;
1859         }
1860
1861         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1862                                                 NULL, cleanup_session);
1863
1864         sessionmode = FALSE;
1865         return 0;
1866 }
1867
1868 void __connman_session_cleanup(void)
1869 {
1870         DBG("");
1871
1872         if (connection == NULL)
1873                 return;
1874
1875         connman_notifier_unregister(&session_notifier);
1876
1877         g_hash_table_foreach(session_hash, release_session, NULL);
1878         g_hash_table_destroy(session_hash);
1879         session_hash = NULL;
1880
1881         dbus_connection_unref(connection);
1882 }