src/session.c

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