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 <errno.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34 static GHashTable *session_hash;
  35 static connman_bool_t sessionmode;
  36 static struct connman_session *ecall_session;
  37
  38 enum connman_session_trigger {
  39         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  40         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  41         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  42         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  43         CONNMAN_SESSION_TRIGGER_PERIODIC        = 4,
  44         CONNMAN_SESSION_TRIGGER_SERVICE         = 5,
  45         CONNMAN_SESSION_TRIGGER_ECALL           = 6,
  46 };
  47
  48 enum connman_session_reason {
  49         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  50         CONNMAN_SESSION_REASON_CONNECT          = 1,
  51         CONNMAN_SESSION_REASON_FREE_RIDE        = 2,
  52         CONNMAN_SESSION_REASON_PERIODIC         = 3,
  53 };
  54
  55 enum connman_session_roaming_policy {
  56         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  57         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  58         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  59         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  60         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  61         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  62 };
  63
  64 struct service_entry {
  65         /* track why this service was selected */
  66         enum connman_session_reason reason;
  67         enum connman_service_state state;
  68         const char *name;
  69         struct connman_service *service;
  70         const char *ifname;
  71         const char *bearer;
  72 };
  73
  74 struct session_info {
  75         connman_bool_t online;
  76         connman_bool_t priority;
  77         GSList *allowed_bearers;
  78         connman_bool_t avoid_handover;
  79         connman_bool_t stay_connected;
  80         unsigned int periodic_connect;
  81         unsigned int idle_timeout;
  82         connman_bool_t ecall;
  83         enum connman_session_roaming_policy roaming_policy;
  84         unsigned int marker;
  85
  86         struct service_entry *entry;
  87 };
  88
  89 struct connman_session {
  90         char *owner;
  91         char *session_path;
  92         char *notify_path;
  93         guint notify_watch;
  94
  95         connman_bool_t append_all;
  96         connman_bool_t info_dirty;
  97         struct session_info *info;
  98         struct session_info *info_last;
  99
 100         GSequence *service_list;
 101         GHashTable *service_hash;
 102 };
 103
 104 struct bearer_info {
 105         char *name;
 106         connman_bool_t match_all;
 107         enum connman_service_type service_type;
 108 };
 109
 110 static const char *trigger2string(enum connman_session_trigger trigger)
 111 {
 112         switch (trigger) {
 113         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 114                 break;
 115         case CONNMAN_SESSION_TRIGGER_SETTING:
 116                 return "setting";
 117         case CONNMAN_SESSION_TRIGGER_CONNECT:
 118                 return "connect";
 119         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 120                 return "disconnect";
 121         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 122                 return "periodic";
 123         case CONNMAN_SESSION_TRIGGER_SERVICE:
 124                 return "service";
 125         case CONNMAN_SESSION_TRIGGER_ECALL:
 126                 return "ecall";
 127         }
 128
 129         return NULL;
 130 }
 131
 132 static const char *reason2string(enum connman_session_reason reason)
 133 {
 134         switch (reason) {
 135         case CONNMAN_SESSION_REASON_UNKNOWN:
 136                 break;
 137         case CONNMAN_SESSION_REASON_CONNECT:
 138                 return "connect";
 139         case CONNMAN_SESSION_REASON_FREE_RIDE:
 140                 return "free-ride";
 141         case CONNMAN_SESSION_REASON_PERIODIC:
 142                 return "periodic";
 143         }
 144
 145         return NULL;
 146 }
 147
 148 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 149 {
 150         switch (policy) {
 151         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 152                 return "unknown";
 153         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 154                 return "default";
 155         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 156                 return "always";
 157         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 158                 return "forbidden";
 159         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 160                 return "national";
 161         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 162                 return "international";
 163         }
 164
 165         return NULL;
 166 }
 167
 168 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 169 {
 170         if (g_strcmp0(policy, "default") == 0)
 171                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 172         else if (g_strcmp0(policy, "always") == 0)
 173                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 174         else if (g_strcmp0(policy, "forbidden") == 0)
 175                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 176         else if (g_strcmp0(policy, "national") == 0)
 177                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 178         else if (g_strcmp0(policy, "international") == 0)
 179                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 180         else
 181                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 182 }
 183
 184 static enum connman_service_type bearer2service(const char *bearer)
 185 {
 186         if (bearer == NULL)
 187                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 188
 189         if (g_strcmp0(bearer, "ethernet") == 0)
 190                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 191         else if (g_strcmp0(bearer, "wifi") == 0)
 192                 return CONNMAN_SERVICE_TYPE_WIFI;
 193         else if (g_strcmp0(bearer, "wimax") == 0)
 194                 return CONNMAN_SERVICE_TYPE_WIMAX;
 195         else if (g_strcmp0(bearer, "bluetooth") == 0)
 196                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 197         else if (g_strcmp0(bearer, "3g") == 0)
 198                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 199         else if (g_strcmp0(bearer, "vpn") == 0)
 200                 return CONNMAN_SERVICE_TYPE_VPN;
 201         else
 202                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 203 }
 204
 205 static char *service2bearer(enum connman_service_type type)
 206 {
 207         switch (type) {
 208         case CONNMAN_SERVICE_TYPE_ETHERNET:
 209                 return "ethernet";
 210         case CONNMAN_SERVICE_TYPE_WIFI:
 211                 return "wifi";
 212         case CONNMAN_SERVICE_TYPE_WIMAX:
 213                 return "wimax";
 214         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 215                 return "bluetooth";
 216         case CONNMAN_SERVICE_TYPE_CELLULAR:
 217                 return "3g";
 218         case CONNMAN_SERVICE_TYPE_VPN:
 219                 return "vpn";
 220         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 221         case CONNMAN_SERVICE_TYPE_SYSTEM:
 222         case CONNMAN_SERVICE_TYPE_GPS:
 223         case CONNMAN_SERVICE_TYPE_GADGET:
 224                 return "";
 225         }
 226
 227         return "";
 228 }
 229
 230 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 231 {
 232         struct bearer_info *info = data;
 233
 234         g_free(info->name);
 235         g_free(info);
 236 }
 237
 238 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 239 {
 240         struct bearer_info *info;
 241         DBusMessageIter array;
 242         GSList *list = NULL;
 243
 244         dbus_message_iter_recurse(iter, &array);
 245
 246         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 247                 char *bearer = NULL;
 248
 249                 dbus_message_iter_get_basic(&array, &bearer);
 250
 251                 info = g_try_new0(struct bearer_info, 1);
 252                 if (info == NULL) {
 253                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 254                         g_slist_free(list);
 255
 256                         return NULL;
 257                 }
 258
 259                 info->name = g_strdup(bearer);
 260                 info->service_type = bearer2service(info->name);
 261
 262                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 263                                 g_strcmp0(info->name, "*") == 0) {
 264                         info->match_all = TRUE;
 265                 } else {
 266                         info->match_all = FALSE;
 267                 }
 268
 269                 list = g_slist_append(list, info);
 270
 271                 dbus_message_iter_next(&array);
 272         }
 273
 274         return list;
 275 }
 276
 277 static GSList *session_allowed_bearers_any(void)
 278 {
 279         struct bearer_info *info;
 280         GSList *list = NULL;
 281
 282         info = g_try_new0(struct bearer_info, 1);
 283         if (info == NULL) {
 284                 g_slist_free(list);
 285
 286                 return NULL;
 287         }
 288
 289         info->name = g_strdup("");
 290         info->match_all = TRUE;
 291         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 292
 293         list = g_slist_append(list, info);
 294
 295         return list;
 296 }
 297
 298 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 299 {
 300         struct session_info *info = user_data;
 301         GSList *list;
 302
 303         for (list = info->allowed_bearers;
 304                         list != NULL; list = list->next) {
 305                 struct bearer_info *info = list->data;
 306
 307                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 308                                                 &info->name);
 309         }
 310 }
 311
 312 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 313 {
 314         struct connman_service *service = user_data;
 315         struct connman_ipconfig *ipconfig_ipv4;
 316
 317         if (service == NULL)
 318                 return;
 319
 320         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 321         if (ipconfig_ipv4 == NULL)
 322                 return;
 323
 324         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 325 }
 326
 327 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 328 {
 329         struct connman_service *service = user_data;
 330         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 331
 332         if (service == NULL)
 333                 return;
 334
 335         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 336         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 337         if (ipconfig_ipv6 == NULL)
 338                 return;
 339
 340         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 341 }
 342
 343 static void append_notify(DBusMessageIter *dict,
 344                                         struct connman_session *session)
 345 {
 346         struct session_info *info = session->info;
 347         struct session_info *info_last = session->info_last;
 348         const char *policy;
 349         struct connman_service *service;
 350         const char *name, *ifname, *bearer;
 351
 352         if (session->append_all == TRUE ||
 353                         info->online != info_last->online) {
 354                 connman_dbus_dict_append_basic(dict, "Online",
 355                                                 DBUS_TYPE_BOOLEAN,
 356                                                 &info->online);
 357                 info_last->online = info->online;
 358         }
 359
 360         if (session->append_all == TRUE ||
 361                         info->entry != info_last->entry) {
 362                 if (info->entry == NULL) {
 363                         name = "";
 364                         ifname = "";
 365                         service = NULL;
 366                         bearer = "";
 367                 } else {
 368                         name = info->entry->name;
 369                         ifname = info->entry->ifname;
 370                         service = info->entry->service;
 371                         bearer = info->entry->bearer;
 372                 }
 373
 374                 connman_dbus_dict_append_basic(dict, "Name",
 375                                                 DBUS_TYPE_STRING,
 376                                                 &name);
 377
 378                 connman_dbus_dict_append_dict(dict, "IPv4",
 379                                                 append_ipconfig_ipv4,
 380                                                 service);
 381
 382                 connman_dbus_dict_append_dict(dict, "IPv6",
 383                                                 append_ipconfig_ipv6,
 384                                                 service);
 385
 386                 connman_dbus_dict_append_basic(dict, "Interface",
 387                                                 DBUS_TYPE_STRING,
 388                                                 &ifname);
 389
 390                 connman_dbus_dict_append_basic(dict, "Bearer",
 391                                                 DBUS_TYPE_STRING,
 392                                                 &bearer);
 393
 394                 info_last->entry = info->entry;
 395         }
 396
 397
 398         if (session->append_all == TRUE ||
 399                         info->priority != info_last->priority) {
 400                 connman_dbus_dict_append_basic(dict, "Priority",
 401                                                 DBUS_TYPE_BOOLEAN,
 402                                                 &info->priority);
 403                 info_last->priority = info->priority;
 404         }
 405
 406         if (session->append_all == TRUE ||
 407                         info->allowed_bearers != info_last->allowed_bearers) {
 408                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 409                                                 DBUS_TYPE_STRING,
 410                                                 append_allowed_bearers,
 411                                                 info);
 412                 info_last->allowed_bearers = info->allowed_bearers;
 413         }
 414
 415         if (session->append_all == TRUE ||
 416                         info->avoid_handover != info_last->avoid_handover) {
 417                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 418                                                 DBUS_TYPE_BOOLEAN,
 419                                                 &info->avoid_handover);
 420                 info_last->avoid_handover = info->avoid_handover;
 421         }
 422
 423         if (session->append_all == TRUE ||
 424                         info->stay_connected != info_last->stay_connected) {
 425                 connman_dbus_dict_append_basic(dict, "StayConnected",
 426                                                 DBUS_TYPE_BOOLEAN,
 427                                                 &info->stay_connected);
 428                 info_last->stay_connected = info->stay_connected;
 429         }
 430
 431         if (session->append_all == TRUE ||
 432                         info->periodic_connect != info_last->periodic_connect) {
 433                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 434                                                 DBUS_TYPE_UINT32,
 435                                                 &info->periodic_connect);
 436                 info_last->periodic_connect = info->periodic_connect;
 437         }
 438
 439         if (session->append_all == TRUE ||
 440                         info->idle_timeout != info_last->idle_timeout) {
 441                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 442                                                 DBUS_TYPE_UINT32,
 443                                                 &info->idle_timeout);
 444                 info_last->idle_timeout = info->idle_timeout;
 445         }
 446
 447         if (session->append_all == TRUE ||
 448                         info->ecall != info_last->ecall) {
 449                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 450                                                 DBUS_TYPE_BOOLEAN,
 451                                                 &info->ecall);
 452                 info_last->ecall = info->ecall;
 453         }
 454
 455         if (session->append_all == TRUE ||
 456                         info->roaming_policy != info_last->roaming_policy) {
 457                 policy = roamingpolicy2string(info->roaming_policy);
 458                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 459                                                 DBUS_TYPE_STRING,
 460                                                 &policy);
 461                 info_last->roaming_policy = info->roaming_policy;
 462         }
 463
 464         if (session->append_all == TRUE ||
 465                         info->marker != info_last->marker) {
 466                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 467                                                 DBUS_TYPE_UINT32,
 468                                                 &info->marker);
 469                 info_last->marker = info->marker;
 470         }
 471
 472         session->append_all = FALSE;
 473         session->info_dirty = FALSE;
 474 }
 475
 476 static gboolean session_notify(gpointer user_data)
 477 {
 478         struct connman_session *session = user_data;
 479         DBusMessage *msg;
 480         DBusMessageIter array, dict;
 481
 482         if (session->info_dirty == FALSE)
 483                 return 0;
 484
 485         DBG("session %p owner %s notify_path %s", session,
 486                 session->owner, session->notify_path);
 487
 488         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 489                                                 CONNMAN_NOTIFICATION_INTERFACE,
 490                                                 "Update");
 491         if (msg == NULL)
 492                 return FALSE;
 493
 494         dbus_message_iter_init_append(msg, &array);
 495         connman_dbus_dict_open(&array, &dict);
 496
 497         append_notify(&dict, session);
 498
 499         connman_dbus_dict_close(&array, &dict);
 500
 501         g_dbus_send_message(connection, msg);
 502
 503         session->info_dirty = FALSE;
 504
 505         return FALSE;
 506 }
 507
 508 static void ipconfig_ipv4_changed(struct connman_session *session)
 509 {
 510         struct session_info *info = session->info;
 511
 512         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 513                                                 "IPv4", append_ipconfig_ipv4,
 514                                                 info->entry->service);
 515 }
 516
 517 static void ipconfig_ipv6_changed(struct connman_session *session)
 518 {
 519         struct session_info *info = session->info;
 520
 521         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 522                                                 "IPv6", append_ipconfig_ipv6,
 523                                                 info->entry->service);
 524 }
 525
 526 static connman_bool_t service_type_match(struct connman_session *session,
 527                                         struct connman_service *service)
 528 {
 529         struct session_info *info = session->info;
 530         GSList *list;
 531
 532         for (list = info->allowed_bearers;
 533                         list != NULL; list = list->next) {
 534                 struct bearer_info *info = list->data;
 535                 enum connman_service_type service_type;
 536
 537                 if (info->match_all == TRUE)
 538                         return TRUE;
 539
 540                 service_type = connman_service_get_type(service);
 541                 if (info->service_type == service_type)
 542                         return TRUE;
 543         }
 544
 545         return FALSE;
 546 }
 547
 548 static connman_bool_t service_match(struct connman_session *session,
 549                                         struct connman_service *service)
 550 {
 551         if (service_type_match(session, service) == FALSE)
 552                 return FALSE;
 553
 554         return TRUE;
 555 }
 556
 557 static int service_type_weight(enum connman_service_type type)
 558 {
 559         /*
 560          * The session doesn't care which service
 561          * to use. Nevertheless we have to sort them
 562          * according their type. The ordering is
 563          *
 564          * 1. Ethernet
 565          * 2. Bluetooth
 566          * 3. WiFi/WiMAX
 567          * 4. GSM/UTMS/3G
 568          */
 569
 570         switch (type) {
 571         case CONNMAN_SERVICE_TYPE_ETHERNET:
 572                 return 4;
 573         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 574                 return 3;
 575         case CONNMAN_SERVICE_TYPE_WIFI:
 576         case CONNMAN_SERVICE_TYPE_WIMAX:
 577                 return 2;
 578         case CONNMAN_SERVICE_TYPE_CELLULAR:
 579                 return 1;
 580         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 581         case CONNMAN_SERVICE_TYPE_SYSTEM:
 582         case CONNMAN_SERVICE_TYPE_GPS:
 583         case CONNMAN_SERVICE_TYPE_VPN:
 584         case CONNMAN_SERVICE_TYPE_GADGET:
 585                 break;
 586         }
 587
 588         return 0;
 589 }
 590
 591 static gint sort_allowed_bearers(struct connman_service *service_a,
 592                                         struct connman_service *service_b,
 593                                         struct connman_session *session)
 594 {
 595         struct session_info *info = session->info;
 596         GSList *list;
 597         enum connman_service_type type_a, type_b;
 598         int weight_a, weight_b;
 599
 600         type_a = connman_service_get_type(service_a);
 601         type_b = connman_service_get_type(service_b);
 602
 603         for (list = info->allowed_bearers;
 604                         list != NULL; list = list->next) {
 605                 struct bearer_info *info = list->data;
 606
 607                 if (info->match_all == TRUE) {
 608                         if (type_a != type_b) {
 609                                 weight_a = service_type_weight(type_a);
 610                                 weight_b = service_type_weight(type_b);
 611
 612                                 if (weight_a > weight_b)
 613                                         return -1;
 614
 615                                 if (weight_a < weight_b)
 616                                         return 1;
 617
 618                                 return 0;
 619                         }
 620                 }
 621
 622                 if (type_a == info->service_type &&
 623                                 type_b == info->service_type) {
 624                         return 0;
 625                 }
 626
 627                 if (type_a == info->service_type &&
 628                                 type_b != info->service_type) {
 629                         return -1;
 630                 }
 631
 632                 if (type_a != info->service_type &&
 633                                 type_b == info->service_type) {
 634                         return 1;
 635                 }
 636         }
 637
 638         return 0;
 639 }
 640
 641 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 642 {
 643         struct service_entry *entry_a = (void *)a;
 644         struct service_entry *entry_b = (void *)b;
 645         struct connman_session *session = user_data;
 646
 647         return sort_allowed_bearers(entry_a->service, entry_b->service,
 648                                 session);
 649 }
 650
 651 static void cleanup_session(gpointer user_data)
 652 {
 653         struct connman_session *session = user_data;
 654         struct session_info *info = session->info;
 655
 656         DBG("remove %s", session->session_path);
 657
 658         g_hash_table_destroy(session->service_hash);
 659         g_sequence_free(session->service_list);
 660
 661         if (info->entry != NULL &&
 662                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 663                 __connman_service_disconnect(info->entry->service);
 664         }
 665
 666         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 667         g_slist_free(info->allowed_bearers);
 668
 669         g_free(session->owner);
 670         g_free(session->session_path);
 671         g_free(session->notify_path);
 672         g_free(session->info);
 673         g_free(session->info_last);
 674
 675         g_free(session);
 676 }
 677
 678 static void release_session(gpointer key, gpointer value, gpointer user_data)
 679 {
 680         struct connman_session *session = value;
 681         DBusMessage *message;
 682
 683         DBG("owner %s path %s", session->owner, session->notify_path);
 684
 685         if (session->notify_watch > 0)
 686                 g_dbus_remove_watch(connection, session->notify_watch);
 687
 688         g_dbus_unregister_interface(connection, session->session_path,
 689                                                 CONNMAN_SESSION_INTERFACE);
 690
 691         message = dbus_message_new_method_call(session->owner,
 692                                                 session->notify_path,
 693                                                 CONNMAN_NOTIFICATION_INTERFACE,
 694                                                 "Release");
 695         if (message == NULL)
 696                 return;
 697
 698         dbus_message_set_no_reply(message, TRUE);
 699
 700         g_dbus_send_message(connection, message);
 701 }
 702
 703 static int session_disconnect(struct connman_session *session)
 704 {
 705         DBG("session %p, %s", session, session->owner);
 706
 707         if (session->notify_watch > 0)
 708                 g_dbus_remove_watch(connection, session->notify_watch);
 709
 710         g_dbus_unregister_interface(connection, session->session_path,
 711                                                 CONNMAN_SESSION_INTERFACE);
 712
 713         g_hash_table_remove(session_hash, session->session_path);
 714
 715         return 0;
 716 }
 717
 718 static void owner_disconnect(DBusConnection *conn, void *user_data)
 719 {
 720         struct connman_session *session = user_data;
 721
 722         DBG("session %p, %s died", session, session->owner);
 723
 724         session_disconnect(session);
 725 }
 726
 727 static DBusMessage *destroy_session(DBusConnection *conn,
 728                                         DBusMessage *msg, void *user_data)
 729 {
 730         struct connman_session *session = user_data;
 731
 732         DBG("session %p", session);
 733
 734         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 735 }
 736
 737 static connman_bool_t is_connected(enum connman_service_state state)
 738 {
 739         switch (state) {
 740         case CONNMAN_SERVICE_STATE_UNKNOWN:
 741         case CONNMAN_SERVICE_STATE_IDLE:
 742         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 743         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 744         case CONNMAN_SERVICE_STATE_DISCONNECT:
 745         case CONNMAN_SERVICE_STATE_FAILURE:
 746                 break;
 747         case CONNMAN_SERVICE_STATE_READY:
 748         case CONNMAN_SERVICE_STATE_ONLINE:
 749                 return TRUE;
 750         }
 751
 752         return FALSE;
 753 }
 754
 755 static connman_bool_t is_connecting(enum connman_service_state state)
 756 {
 757         switch (state) {
 758         case CONNMAN_SERVICE_STATE_UNKNOWN:
 759         case CONNMAN_SERVICE_STATE_IDLE:
 760                 break;
 761         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 762         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 763                 return TRUE;
 764         case CONNMAN_SERVICE_STATE_DISCONNECT:
 765         case CONNMAN_SERVICE_STATE_FAILURE:
 766         case CONNMAN_SERVICE_STATE_READY:
 767         case CONNMAN_SERVICE_STATE_ONLINE:
 768                 break;
 769         }
 770
 771         return FALSE;
 772 }
 773
 774 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 775 {
 776         switch (reason) {
 777         case CONNMAN_SESSION_REASON_UNKNOWN:
 778         case CONNMAN_SESSION_REASON_FREE_RIDE:
 779                 break;
 780         case CONNMAN_SESSION_REASON_CONNECT:
 781         case CONNMAN_SESSION_REASON_PERIODIC:
 782                 return TRUE;
 783         }
 784
 785         return FALSE;
 786 }
 787
 788 static void test_and_disconnect(struct connman_session *session)
 789 {
 790         struct session_info *info = session->info;
 791
 792         if (info->entry == NULL)
 793                 return;
 794
 795         DBG("session %p reason %s service %p state %d",
 796                 session, reason2string(info->entry->reason),
 797                 info->entry->service, info->entry->state);
 798
 799         if (explicit_connect(info->entry->reason) == FALSE)
 800                 goto out;
 801
 802         if (__connman_service_session_dec(info->entry->service) == TRUE)
 803                 goto out;
 804
 805         if (ecall_session != NULL && ecall_session != session)
 806                 goto out;
 807
 808         __connman_service_disconnect(info->entry->service);
 809
 810         /*
 811          * TODO: We should mark this entry as pending work. In case
 812          * disconnect fails we just unassign this session from the
 813          * service and can't do anything later on it
 814          */
 815
 816 out:
 817         info->online = FALSE;
 818         info->entry = NULL;
 819 }
 820
 821 static void select_and_connect(struct connman_session *session,
 822                                 enum connman_session_reason reason)
 823 {
 824         struct session_info *info = session->info;
 825         struct service_entry *entry = NULL;
 826         GSequenceIter *iter;
 827         connman_bool_t do_connect = FALSE;
 828
 829         DBG("session %p reason %s", session, reason2string(reason));
 830
 831         iter = g_sequence_get_begin_iter(session->service_list);
 832
 833         while (g_sequence_iter_is_end(iter) == FALSE) {
 834                 entry = g_sequence_get(iter);
 835
 836                 switch (entry->state) {
 837                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 838                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 839                 case CONNMAN_SERVICE_STATE_READY:
 840                 case CONNMAN_SERVICE_STATE_ONLINE:
 841                         /* connecting or connected */
 842                         break;
 843                 case CONNMAN_SERVICE_STATE_IDLE:
 844                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 845                         if (explicit_connect(reason) == TRUE)
 846                                 do_connect = TRUE;
 847                         break;
 848                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 849                 case CONNMAN_SERVICE_STATE_FAILURE:
 850                         entry = NULL;
 851                         break;
 852                 }
 853
 854                 if (entry != NULL)
 855                         break;
 856
 857                 iter = g_sequence_iter_next(iter);
 858         }
 859
 860         if (info->entry != NULL && info->entry != entry)
 861                 test_and_disconnect(session);
 862
 863         if (entry != NULL) {
 864                 info->entry = entry;
 865                 info->entry->reason = reason;
 866
 867                 if (explicit_connect(reason) == TRUE)
 868                         __connman_service_session_inc(info->entry->service);
 869
 870                 if (do_connect == TRUE)
 871                         __connman_service_connect(info->entry->service);
 872                 else
 873                         info->online = is_connected(entry->state);
 874         }
 875 }
 876
 877 static void session_changed(struct connman_session *session,
 878                                 enum connman_session_trigger trigger)
 879 {
 880         struct session_info *info = session->info;
 881         struct session_info *info_last = session->info_last;
 882         GSequenceIter *iter;
 883
 884         /*
 885          * TODO: This only a placeholder for the 'real' algorithm to
 886          * play a bit around. So we are going to improve it step by step.
 887          */
 888
 889         DBG("session %p trigger %s", session, trigger2string(trigger));
 890
 891         switch (trigger) {
 892         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 893                 DBG("ignore session changed event");
 894                 return;
 895         case CONNMAN_SESSION_TRIGGER_SETTING:
 896                 if (info->entry != NULL) {
 897                         iter = g_hash_table_lookup(session->service_hash,
 898                                                         info->entry->service);
 899                         if (iter == NULL) {
 900                                 /*
 901                                  * This service is not part of this
 902                                  * session anymore.
 903                                  */
 904                                 test_and_disconnect(session);
 905                         }
 906                 }
 907
 908                 if (info->online == FALSE) {
 909                         select_and_connect(session,
 910                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 911                 }
 912
 913                 break;
 914         case CONNMAN_SESSION_TRIGGER_CONNECT:
 915                 if (info->online == TRUE) {
 916                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 917                         __connman_service_session_inc(info->entry->service);
 918                         break;
 919                 }
 920
 921                 select_and_connect(session,
 922                                 CONNMAN_SESSION_REASON_CONNECT);
 923
 924                 break;
 925         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 926                 test_and_disconnect(session);
 927
 928                 break;
 929         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 930                 if (info->online == TRUE) {
 931                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 932                         __connman_service_session_inc(info->entry->service);
 933                         break;
 934                 }
 935
 936                 select_and_connect(session,
 937                                 CONNMAN_SESSION_REASON_PERIODIC);
 938
 939                 break;
 940         case CONNMAN_SESSION_TRIGGER_SERVICE:
 941                 if (info->online == TRUE)
 942                         break;
 943
 944                 if (info->entry != NULL &&
 945                                 is_connecting(info->entry->state) == TRUE) {
 946                         break;
 947                 }
 948
 949                 if (info->stay_connected == TRUE) {
 950                         DBG("StayConnected");
 951                         select_and_connect(session,
 952                                         CONNMAN_SESSION_REASON_CONNECT);
 953
 954                         break;
 955                 }
 956
 957                 select_and_connect(session,
 958                                 CONNMAN_SESSION_REASON_FREE_RIDE);
 959
 960                 break;
 961         case CONNMAN_SESSION_TRIGGER_ECALL:
 962                 if (info->online == FALSE && info->entry->service != NULL)
 963                         test_and_disconnect(session);
 964
 965                 break;
 966         }
 967
 968         if (info->entry != info_last->entry)
 969                 session->info_dirty = TRUE;
 970
 971         session_notify(session);
 972 }
 973
 974 static DBusMessage *connect_session(DBusConnection *conn,
 975                                         DBusMessage *msg, void *user_data)
 976 {
 977         struct connman_session *session = user_data;
 978
 979         DBG("session %p", session);
 980
 981         if (ecall_session != NULL && ecall_session != session)
 982                 return __connman_error_failed(msg, EBUSY);
 983
 984         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 985
 986         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 987 }
 988
 989 static DBusMessage *disconnect_session(DBusConnection *conn,
 990                                         DBusMessage *msg, void *user_data)
 991 {
 992         struct connman_session *session = user_data;
 993
 994         DBG("session %p", session);
 995
 996         if (ecall_session != NULL && ecall_session != session)
 997                 return __connman_error_failed(msg, EBUSY);
 998
 999         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1000
1001         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1002 }
1003
1004 static struct service_entry *create_service_entry(struct connman_service *service,
1005                                         const char *name,
1006                                         enum connman_service_state state)
1007 {
1008         struct service_entry *entry;
1009         enum connman_service_type type;
1010         int idx;
1011
1012         entry = g_try_new0(struct service_entry, 1);
1013         if (entry == NULL)
1014                 return entry;
1015
1016         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
1017         entry->state = state;
1018         entry->name = name;
1019         entry->service = service;
1020
1021         idx = __connman_service_get_index(entry->service);
1022         entry->ifname = connman_inet_ifname(idx);
1023         if (entry->ifname == NULL)
1024                 entry->ifname = "";
1025
1026         type = connman_service_get_type(entry->service);
1027         entry->bearer = service2bearer(type);
1028
1029         return entry;
1030 }
1031
1032 static void destroy_service_entry(gpointer data)
1033 {
1034         struct service_entry *entry = data;
1035
1036         g_free(entry);
1037 }
1038
1039 static void update_allowed_bearers(struct connman_session *session)
1040 {
1041         struct service_entry *entry;
1042         GSequenceIter *iter;
1043
1044         if (session->service_list != NULL) {
1045                 g_hash_table_remove_all(session->service_hash);
1046                 g_sequence_free(session->service_list);
1047         }
1048
1049         session->service_list = __connman_service_get_list(session,
1050                                                         service_match,
1051                                                         create_service_entry,
1052                                                         destroy_service_entry);
1053
1054         g_sequence_sort(session->service_list, sort_services, session);
1055
1056         iter = g_sequence_get_begin_iter(session->service_list);
1057
1058         while (g_sequence_iter_is_end(iter) == FALSE) {
1059                 entry = g_sequence_get(iter);
1060
1061                 DBG("service %p type %s name %s", entry->service,
1062                         service2bearer(connman_service_get_type(entry->service)),
1063                         entry->name);
1064
1065                 g_hash_table_replace(session->service_hash,
1066                                         entry->service, iter);
1067
1068                 iter = g_sequence_iter_next(iter);
1069         }
1070
1071         session->info_dirty = TRUE;
1072 }
1073
1074 static void update_ecall_sessions(struct connman_session *session)
1075 {
1076         struct session_info *info = session->info;
1077         struct connman_session *session_iter;
1078         GHashTableIter iter;
1079         gpointer key, value;
1080
1081         g_hash_table_iter_init(&iter, session_hash);
1082
1083         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1084                 session_iter = value;
1085
1086                 if (session_iter == session)
1087                         continue;
1088
1089                 session_iter->info->ecall = info->ecall;
1090                 session_iter->info_dirty = TRUE;
1091
1092                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1093         }
1094 }
1095
1096 static void update_ecall(struct connman_session *session)
1097 {
1098         struct session_info *info = session->info;
1099         struct session_info *info_last = session->info_last;
1100
1101         DBG("session %p ecall_session %p ecall %d -> %d", session,
1102                 ecall_session, info_last->ecall, info->ecall);
1103
1104         if (ecall_session == NULL) {
1105                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1106                         goto err;
1107
1108                 ecall_session = session;
1109         } else if (ecall_session == session) {
1110                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1111                         goto err;
1112
1113                 ecall_session = NULL;
1114         } else {
1115                 goto err;
1116         }
1117
1118         update_ecall_sessions(session);
1119
1120         session->info_dirty = TRUE;
1121         return;
1122
1123 err:
1124         /* not a valid transition */
1125         info->ecall = info_last->ecall;
1126 }
1127
1128 static DBusMessage *change_session(DBusConnection *conn,
1129                                         DBusMessage *msg, void *user_data)
1130 {
1131         struct connman_session *session = user_data;
1132         struct session_info *info = session->info;
1133         struct session_info *info_last = session->info_last;
1134         DBusMessageIter iter, value;
1135         const char *name;
1136         GSList *allowed_bearers;
1137
1138         DBG("session %p", session);
1139         if (dbus_message_iter_init(msg, &iter) == FALSE)
1140                 return __connman_error_invalid_arguments(msg);
1141
1142         dbus_message_iter_get_basic(&iter, &name);
1143         dbus_message_iter_next(&iter);
1144         dbus_message_iter_recurse(&iter, &value);
1145
1146         switch (dbus_message_iter_get_arg_type(&value)) {
1147         case DBUS_TYPE_ARRAY:
1148                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1149                         allowed_bearers = session_parse_allowed_bearers(&value);
1150
1151                         g_slist_foreach(info->allowed_bearers,
1152                                         cleanup_bearer_info, NULL);
1153                         g_slist_free(info->allowed_bearers);
1154
1155                         if (allowed_bearers == NULL) {
1156                                 allowed_bearers = session_allowed_bearers_any();
1157
1158                                 if (allowed_bearers == NULL)
1159                                         return __connman_error_failed(msg, ENOMEM);
1160                         }
1161
1162                         info->allowed_bearers = allowed_bearers;
1163
1164                         update_allowed_bearers(session);
1165                 } else {
1166                         goto err;
1167                 }
1168                 break;
1169         case DBUS_TYPE_BOOLEAN:
1170                 if (g_str_equal(name, "Priority") == TRUE) {
1171                         dbus_message_iter_get_basic(&value,
1172                                         &info->priority);
1173
1174                         if (info_last->priority != info->priority)
1175                                 session->info_dirty = TRUE;
1176                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1177                         dbus_message_iter_get_basic(&value,
1178                                         &info->avoid_handover);
1179
1180                         if (info_last->avoid_handover != info->avoid_handover)
1181                                 session->info_dirty = TRUE;
1182                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1183                         dbus_message_iter_get_basic(&value,
1184                                         &info->stay_connected);
1185
1186                         if (info_last->stay_connected != info->stay_connected)
1187                                 session->info_dirty = TRUE;
1188                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1189                         dbus_message_iter_get_basic(&value,
1190                                         &info->ecall);
1191
1192                         update_ecall(session);
1193                 } else {
1194                         goto err;
1195                 }
1196                 break;
1197         case DBUS_TYPE_UINT32:
1198                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1199                         dbus_message_iter_get_basic(&value,
1200                                         &info->periodic_connect);
1201
1202                         if (info_last->periodic_connect != info->periodic_connect)
1203                                 session->info_dirty = TRUE;
1204                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1205                         dbus_message_iter_get_basic(&value,
1206                                         &info->idle_timeout);
1207
1208                         if (info_last->idle_timeout != info->idle_timeout)
1209                                 session->info_dirty = TRUE;
1210                 } else {
1211                         goto err;
1212                 }
1213                 break;
1214         case DBUS_TYPE_STRING:
1215                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1216                         const char *val;
1217                         dbus_message_iter_get_basic(&value, &val);
1218                         info->roaming_policy =
1219                                         string2roamingpolicy(val);
1220
1221                         if (info_last->roaming_policy != info->roaming_policy)
1222                                 session->info_dirty = TRUE;
1223                 } else {
1224                         goto err;
1225                 }
1226                 break;
1227         default:
1228                 goto err;
1229         }
1230
1231         if (session->info_dirty == TRUE)
1232                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1233
1234         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1235
1236 err:
1237         return __connman_error_invalid_arguments(msg);
1238 }
1239
1240 static GDBusMethodTable session_methods[] = {
1241         { "Destroy",    "",   "", destroy_session    },
1242         { "Connect",    "",   "", connect_session    },
1243         { "Disconnect", "",   "", disconnect_session },
1244         { "Change",     "sv", "", change_session     },
1245         { },
1246 };
1247
1248 int __connman_session_create(DBusMessage *msg)
1249 {
1250         const char *owner, *notify_path;
1251         char *session_path = NULL;
1252         DBusMessageIter iter, array;
1253         struct connman_session *session = NULL;
1254         struct session_info *info, *info_last;
1255
1256         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1257         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1258         enum connman_session_roaming_policy roaming_policy =
1259                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1260         GSList *allowed_bearers = NULL;
1261         unsigned int periodic_connect = 0;
1262         unsigned int idle_timeout = 0;
1263
1264         int err;
1265
1266         owner = dbus_message_get_sender(msg);
1267
1268         DBG("owner %s", owner);
1269
1270         if (ecall_session != NULL) {
1271                 /*
1272                  * If there is an emergency call already going on,
1273                  * ignore session creation attempt
1274                  */
1275                 err = -EBUSY;
1276                 goto err;
1277         }
1278
1279         dbus_message_iter_init(msg, &iter);
1280         dbus_message_iter_recurse(&iter, &array);
1281
1282         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1283                 DBusMessageIter entry, value;
1284                 const char *key, *val;
1285
1286                 dbus_message_iter_recurse(&array, &entry);
1287                 dbus_message_iter_get_basic(&entry, &key);
1288
1289                 dbus_message_iter_next(&entry);
1290                 dbus_message_iter_recurse(&entry, &value);
1291
1292                 switch (dbus_message_iter_get_arg_type(&value)) {
1293                 case DBUS_TYPE_ARRAY:
1294                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1295                                 allowed_bearers =
1296                                         session_parse_allowed_bearers(&value);
1297                         } else {
1298                                 return -EINVAL;
1299                         }
1300                         break;
1301                 case DBUS_TYPE_BOOLEAN:
1302                         if (g_str_equal(key, "Priority") == TRUE) {
1303                                 dbus_message_iter_get_basic(&value,
1304                                                         &priority);
1305                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1306                                 dbus_message_iter_get_basic(&value,
1307                                                         &avoid_handover);
1308                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1309                                 dbus_message_iter_get_basic(&value,
1310                                                         &stay_connected);
1311                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1312                                 dbus_message_iter_get_basic(&value,
1313                                                         &ecall);
1314                         } else {
1315                                 return -EINVAL;
1316                         }
1317                         break;
1318                 case DBUS_TYPE_UINT32:
1319                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1320                                 dbus_message_iter_get_basic(&value,
1321                                                         &periodic_connect);
1322                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1323                                 dbus_message_iter_get_basic(&value,
1324                                                         &idle_timeout);
1325                         } else {
1326                                 return -EINVAL;
1327                         }
1328                         break;
1329                 case DBUS_TYPE_STRING:
1330                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1331                                 dbus_message_iter_get_basic(&value, &val);
1332                                 roaming_policy = string2roamingpolicy(val);
1333                         } else {
1334                                 return -EINVAL;
1335                         }
1336                 }
1337                 dbus_message_iter_next(&array);
1338         }
1339
1340         dbus_message_iter_next(&iter);
1341         dbus_message_iter_get_basic(&iter, &notify_path);
1342
1343         if (notify_path == NULL) {
1344                 err = -EINVAL;
1345                 goto err;
1346         }
1347
1348         session_path = g_strdup_printf("/sessions%s", notify_path);
1349         if (session_path == NULL) {
1350                 err = -ENOMEM;
1351                 goto err;
1352         }
1353
1354         session = g_hash_table_lookup(session_hash, session_path);
1355         if (session != NULL) {
1356                 session = NULL;
1357                 err = -EEXIST;
1358                 goto err;
1359         }
1360
1361         session = g_try_new0(struct connman_session, 1);
1362         if (session == NULL) {
1363                 err = -ENOMEM;
1364                 goto err;
1365         }
1366
1367         session->info = g_try_new0(struct session_info, 1);
1368         if (session->info == NULL) {
1369                 err = -ENOMEM;
1370                 goto err;
1371         }
1372
1373         session->info_last = g_try_new0(struct session_info, 1);
1374         if (session->info_last == NULL) {
1375                 err = -ENOMEM;
1376                 goto err;
1377         }
1378
1379         info = session->info;
1380         info_last = session->info_last;
1381
1382         session->owner = g_strdup(owner);
1383         session->session_path = session_path;
1384         session->notify_path = g_strdup(notify_path);
1385         session->notify_watch =
1386                 g_dbus_add_disconnect_watch(connection, session->owner,
1387                                         owner_disconnect, session, NULL);
1388
1389         session->service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1390                                                 NULL, NULL);
1391
1392         info->online = FALSE;
1393         info->priority = priority;
1394         info->avoid_handover = avoid_handover;
1395         info->stay_connected = stay_connected;
1396         info->periodic_connect = periodic_connect;
1397         info->idle_timeout = idle_timeout;
1398         info->ecall = ecall;
1399         info->roaming_policy = roaming_policy;
1400         info->entry = NULL;
1401         info->marker = 0;
1402
1403         if (allowed_bearers == NULL) {
1404                 info->allowed_bearers =
1405                                 session_allowed_bearers_any();
1406
1407                 if (info->allowed_bearers == NULL) {
1408                         err = -ENOMEM;
1409                         goto err;
1410                 }
1411         } else {
1412                 info->allowed_bearers = allowed_bearers;
1413         }
1414
1415         g_hash_table_replace(session_hash, session->session_path, session);
1416
1417         DBG("add %s", session->session_path);
1418
1419         if (g_dbus_register_interface(connection, session->session_path,
1420                                         CONNMAN_SESSION_INTERFACE,
1421                                         session_methods, NULL,
1422                                         NULL, session, NULL) == FALSE) {
1423                 connman_error("Failed to register %s", session->session_path);
1424                 g_hash_table_remove(session_hash, session->session_path);
1425                 session = NULL;
1426
1427                 err = -EINVAL;
1428                 goto err;
1429         }
1430
1431         g_dbus_send_reply(connection, msg,
1432                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1433                                 DBUS_TYPE_INVALID);
1434
1435
1436         update_allowed_bearers(session);
1437         if (info->ecall == TRUE) {
1438                 ecall_session = session;
1439                 update_ecall_sessions(session);
1440         }
1441
1442         info_last->online = info->online;
1443         info_last->priority = info->priority;
1444         info_last->avoid_handover = info->avoid_handover;
1445         info_last->stay_connected = info->stay_connected;
1446         info_last->periodic_connect = info->periodic_connect;
1447         info_last->idle_timeout = info->idle_timeout;
1448         info_last->ecall = info->ecall;
1449         info_last->roaming_policy = info->roaming_policy;
1450         info_last->entry = info->entry;
1451         info_last->marker = info->marker;
1452         info_last->allowed_bearers = info->allowed_bearers;
1453
1454         session->info_dirty = TRUE;
1455         session->append_all = TRUE;
1456
1457         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1458
1459         return 0;
1460
1461 err:
1462         connman_error("Failed to create session");
1463
1464         if (session != NULL) {
1465                 if (session->info_last != NULL)
1466                         g_free(session->info_last);
1467                 if (session->info != NULL)
1468                         g_free(session->info);
1469                 g_free(session);
1470         }
1471
1472         g_free(session_path);
1473
1474         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1475         g_slist_free(allowed_bearers);
1476
1477         return err;
1478 }
1479
1480 int __connman_session_destroy(DBusMessage *msg)
1481 {
1482         const char *owner, *session_path;
1483         struct connman_session *session;
1484
1485         owner = dbus_message_get_sender(msg);
1486
1487         DBG("owner %s", owner);
1488
1489         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1490                                                         DBUS_TYPE_INVALID);
1491         if (session_path == NULL)
1492                 return -EINVAL;
1493
1494         session = g_hash_table_lookup(session_hash, session_path);
1495         if (session == NULL)
1496                 return -EINVAL;
1497
1498         if (g_strcmp0(owner, session->owner) != 0)
1499                 return -EACCES;
1500
1501         session_disconnect(session);
1502
1503         return 0;
1504 }
1505
1506 connman_bool_t __connman_session_mode()
1507 {
1508         return sessionmode;
1509 }
1510
1511 void __connman_session_set_mode(connman_bool_t enable)
1512 {
1513         DBG("enable %d", enable);
1514
1515         if (sessionmode == enable)
1516                 return;
1517
1518         sessionmode = enable;
1519
1520         if (sessionmode == TRUE)
1521                 __connman_service_disconnect_all();
1522 }
1523
1524 static void service_add(struct connman_service *service)
1525 {
1526         GHashTableIter iter;
1527         GSequenceIter *iter_service_list;
1528         gpointer key, value;
1529         struct connman_session *session;
1530
1531         DBG("service %p", service);
1532
1533         g_hash_table_iter_init(&iter, session_hash);
1534
1535         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1536                 session = value;
1537
1538                 if (service_match(session, service) == FALSE)
1539                         continue;
1540
1541                 iter_service_list =
1542                         g_sequence_insert_sorted(session->service_list,
1543                                                         service, sort_services,
1544                                                         session);
1545
1546                 g_hash_table_replace(session->service_hash, service,
1547                                         iter_service_list);
1548
1549                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1550         }
1551 }
1552
1553 static void service_remove(struct connman_service *service)
1554 {
1555
1556         GHashTableIter iter;
1557         gpointer key, value;
1558         struct connman_session *session;
1559         struct session_info *info;
1560
1561         DBG("service %p", service);
1562
1563         g_hash_table_iter_init(&iter, session_hash);
1564
1565         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1566                 GSequenceIter *iter;
1567                 session = value;
1568                 info = session->info;
1569
1570                 iter = g_hash_table_lookup(session->service_hash, service);
1571                 if (iter == NULL)
1572                         continue;
1573
1574                 g_sequence_remove(iter);
1575
1576                 info->entry = NULL;
1577                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1578         }
1579 }
1580
1581 static void service_state_changed(struct connman_service *service,
1582                                         enum connman_service_state state)
1583 {
1584         GHashTableIter iter;
1585         gpointer key, value;
1586         struct connman_session *session;
1587         struct session_info *info, *info_last;
1588
1589         DBG("service %p state %d", service, state);
1590
1591         g_hash_table_iter_init(&iter, session_hash);
1592
1593         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1594                 session = value;
1595                 info = session->info;
1596                 info_last = session->info_last;
1597
1598                 if (info->entry != NULL && info->entry->service == service) {
1599                         info->entry->state = state;
1600                         info->online = is_connected(info->entry->state);
1601                         if (info_last->online != info->online)
1602                                 session->info_dirty = TRUE;
1603                 }
1604
1605                 session_changed(session,
1606                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1607         }
1608 }
1609
1610 static void ipconfig_changed(struct connman_service *service,
1611                                 struct connman_ipconfig *ipconfig)
1612 {
1613         GHashTableIter iter;
1614         gpointer key, value;
1615         struct connman_session *session;
1616         struct session_info *info;
1617         enum connman_ipconfig_type type;
1618
1619         DBG("service %p ipconfig %p", service, ipconfig);
1620
1621         type = __connman_ipconfig_get_config_type(ipconfig);
1622
1623         g_hash_table_iter_init(&iter, session_hash);
1624
1625         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1626                 session = value;
1627                 info = session->info;
1628
1629                 if (info->entry != NULL && info->entry->service == service) {
1630                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1631                                 ipconfig_ipv4_changed(session);
1632                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1633                                 ipconfig_ipv6_changed(session);
1634                 }
1635         }
1636 }
1637
1638 static struct connman_notifier session_notifier = {
1639         .name                   = "session",
1640         .service_add            = service_add,
1641         .service_remove         = service_remove,
1642         .service_state_changed  = service_state_changed,
1643         .ipconfig_changed       = ipconfig_changed,
1644 };
1645
1646 int __connman_session_init(void)
1647 {
1648         int err;
1649
1650         DBG("");
1651
1652         connection = connman_dbus_get_connection();
1653         if (connection == NULL)
1654                 return -1;
1655
1656         err = connman_notifier_register(&session_notifier);
1657         if (err < 0) {
1658                 dbus_connection_unref(connection);
1659                 return err;
1660         }
1661
1662         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1663                                                 NULL, cleanup_session);
1664
1665         sessionmode = FALSE;
1666         return 0;
1667 }
1668
1669 void __connman_session_cleanup(void)
1670 {
1671         DBG("");
1672
1673         if (connection == NULL)
1674                 return;
1675
1676         connman_notifier_unregister(&session_notifier);
1677
1678         g_hash_table_foreach(session_hash, release_session, NULL);
1679         g_hash_table_destroy(session_hash);
1680
1681         dbus_connection_unref(connection);
1682 }