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