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