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 session_info *ecall_info;
  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         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         enum connman_session_reason reason;
  88 };
  89
  90 struct connman_session {
  91         char *owner;
  92         char *session_path;
  93         char *notify_path;
  94         guint notify_watch;
  95
  96         connman_bool_t append_all;
  97         connman_bool_t info_dirty;
  98         struct session_info *info;
  99         struct session_info *info_last;
 100
 101         GSequence *service_list;
 102         GHashTable *service_hash;
 103 };
 104
 105 struct bearer_info {
 106         char *name;
 107         connman_bool_t match_all;
 108         enum connman_service_type service_type;
 109 };
 110
 111 static const char *trigger2string(enum connman_session_trigger trigger)
 112 {
 113         switch (trigger) {
 114         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 115                 break;
 116         case CONNMAN_SESSION_TRIGGER_SETTING:
 117                 return "setting";
 118         case CONNMAN_SESSION_TRIGGER_CONNECT:
 119                 return "connect";
 120         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 121                 return "disconnect";
 122         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 123                 return "periodic";
 124         case CONNMAN_SESSION_TRIGGER_SERVICE:
 125                 return "service";
 126         case CONNMAN_SESSION_TRIGGER_ECALL:
 127                 return "ecall";
 128         }
 129
 130         return NULL;
 131 }
 132
 133 static const char *reason2string(enum connman_session_reason reason)
 134 {
 135         switch (reason) {
 136         case CONNMAN_SESSION_REASON_UNKNOWN:
 137                 return "unknown";
 138         case CONNMAN_SESSION_REASON_CONNECT:
 139                 return "connect";
 140         case CONNMAN_SESSION_REASON_FREE_RIDE:
 141                 return "free-ride";
 142         case CONNMAN_SESSION_REASON_PERIODIC:
 143                 return "periodic";
 144         }
 145
 146         return NULL;
 147 }
 148
 149 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 150 {
 151         switch (policy) {
 152         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 153                 return "unknown";
 154         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 155                 return "default";
 156         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 157                 return "always";
 158         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 159                 return "forbidden";
 160         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 161                 return "national";
 162         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 163                 return "international";
 164         }
 165
 166         return NULL;
 167 }
 168
 169 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 170 {
 171         if (g_strcmp0(policy, "default") == 0)
 172                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 173         else if (g_strcmp0(policy, "always") == 0)
 174                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 175         else if (g_strcmp0(policy, "forbidden") == 0)
 176                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 177         else if (g_strcmp0(policy, "national") == 0)
 178                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 179         else if (g_strcmp0(policy, "international") == 0)
 180                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 181         else
 182                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 183 }
 184
 185 static enum connman_service_type bearer2service(const char *bearer)
 186 {
 187         if (bearer == NULL)
 188                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 189
 190         if (g_strcmp0(bearer, "ethernet") == 0)
 191                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 192         else if (g_strcmp0(bearer, "wifi") == 0)
 193                 return CONNMAN_SERVICE_TYPE_WIFI;
 194         else if (g_strcmp0(bearer, "wimax") == 0)
 195                 return CONNMAN_SERVICE_TYPE_WIMAX;
 196         else if (g_strcmp0(bearer, "bluetooth") == 0)
 197                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 198         else if (g_strcmp0(bearer, "3g") == 0)
 199                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 200         else if (g_strcmp0(bearer, "vpn") == 0)
 201                 return CONNMAN_SERVICE_TYPE_VPN;
 202         else
 203                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 204 }
 205
 206 static char *service2bearer(enum connman_service_type type)
 207 {
 208         switch (type) {
 209         case CONNMAN_SERVICE_TYPE_ETHERNET:
 210                 return "ethernet";
 211         case CONNMAN_SERVICE_TYPE_WIFI:
 212                 return "wifi";
 213         case CONNMAN_SERVICE_TYPE_WIMAX:
 214                 return "wimax";
 215         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 216                 return "bluetooth";
 217         case CONNMAN_SERVICE_TYPE_CELLULAR:
 218                 return "3g";
 219         case CONNMAN_SERVICE_TYPE_VPN:
 220                 return "vpn";
 221         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 222         case CONNMAN_SERVICE_TYPE_SYSTEM:
 223         case CONNMAN_SERVICE_TYPE_GPS:
 224         case CONNMAN_SERVICE_TYPE_GADGET:
 225                 return "";
 226         }
 227
 228         return "";
 229 }
 230
 231 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 232 {
 233         struct bearer_info *info = data;
 234
 235         g_free(info->name);
 236         g_free(info);
 237 }
 238
 239 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 240 {
 241         struct bearer_info *info;
 242         DBusMessageIter array;
 243         GSList *list = NULL;
 244
 245         dbus_message_iter_recurse(iter, &array);
 246
 247         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 248                 char *bearer = NULL;
 249
 250                 dbus_message_iter_get_basic(&array, &bearer);
 251
 252                 info = g_try_new0(struct bearer_info, 1);
 253                 if (info == NULL) {
 254                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 255                         g_slist_free(list);
 256
 257                         return NULL;
 258                 }
 259
 260                 info->name = g_strdup(bearer);
 261                 info->service_type = bearer2service(info->name);
 262
 263                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 264                                 g_strcmp0(info->name, "*") == 0) {
 265                         info->match_all = TRUE;
 266                 } else {
 267                         info->match_all = FALSE;
 268                 }
 269
 270                 list = g_slist_append(list, info);
 271
 272                 dbus_message_iter_next(&array);
 273         }
 274
 275         return list;
 276 }
 277
 278 static GSList *session_allowed_bearers_any(void)
 279 {
 280         struct bearer_info *info;
 281         GSList *list = NULL;
 282
 283         info = g_try_new0(struct bearer_info, 1);
 284         if (info == NULL) {
 285                 g_slist_free(list);
 286
 287                 return NULL;
 288         }
 289
 290         info->name = g_strdup("");
 291         info->match_all = TRUE;
 292         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 293
 294         list = g_slist_append(list, info);
 295
 296         return list;
 297 }
 298
 299 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 300 {
 301         struct session_info *info = user_data;
 302         GSList *list;
 303
 304         for (list = info->allowed_bearers;
 305                         list != NULL; list = list->next) {
 306                 struct bearer_info *info = list->data;
 307
 308                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 309                                                 &info->name);
 310         }
 311 }
 312
 313 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 314 {
 315         struct connman_service *service = user_data;
 316         struct connman_ipconfig *ipconfig_ipv4;
 317
 318         if (service == NULL)
 319                 return;
 320
 321         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 322         if (ipconfig_ipv4 == NULL)
 323                 return;
 324
 325         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 326 }
 327
 328 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 329 {
 330         struct connman_service *service = user_data;
 331         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 332
 333         if (service == NULL)
 334                 return;
 335
 336         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 337         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 338         if (ipconfig_ipv6 == NULL)
 339                 return;
 340
 341         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 342 }
 343
 344 static void append_notify(DBusMessageIter *dict,
 345                                         struct connman_session *session)
 346 {
 347         struct session_info *info = session->info;
 348         struct session_info *info_last = session->info_last;
 349         const char *policy;
 350         struct connman_service *service;
 351         const char *name, *ifname, *bearer;
 352
 353         if (session->append_all == TRUE ||
 354                         info->online != info_last->online) {
 355                 connman_dbus_dict_append_basic(dict, "Online",
 356                                                 DBUS_TYPE_BOOLEAN,
 357                                                 &info->online);
 358                 info_last->online = info->online;
 359         }
 360
 361         if (session->append_all == TRUE ||
 362                         info->entry != info_last->entry) {
 363                 if (info->entry == NULL) {
 364                         name = "";
 365                         ifname = "";
 366                         service = NULL;
 367                         bearer = "";
 368                 } else {
 369                         name = info->entry->name;
 370                         ifname = info->entry->ifname;
 371                         service = info->entry->service;
 372                         bearer = info->entry->bearer;
 373                 }
 374
 375                 connman_dbus_dict_append_basic(dict, "Name",
 376                                                 DBUS_TYPE_STRING,
 377                                                 &name);
 378
 379                 connman_dbus_dict_append_dict(dict, "IPv4",
 380                                                 append_ipconfig_ipv4,
 381                                                 service);
 382
 383                 connman_dbus_dict_append_dict(dict, "IPv6",
 384                                                 append_ipconfig_ipv6,
 385                                                 service);
 386
 387                 connman_dbus_dict_append_basic(dict, "Interface",
 388                                                 DBUS_TYPE_STRING,
 389                                                 &ifname);
 390
 391                 connman_dbus_dict_append_basic(dict, "Bearer",
 392                                                 DBUS_TYPE_STRING,
 393                                                 &bearer);
 394
 395                 info_last->entry = info->entry;
 396         }
 397
 398
 399         if (session->append_all == TRUE ||
 400                         info->priority != info_last->priority) {
 401                 connman_dbus_dict_append_basic(dict, "Priority",
 402                                                 DBUS_TYPE_BOOLEAN,
 403                                                 &info->priority);
 404                 info_last->priority = info->priority;
 405         }
 406
 407         if (session->append_all == TRUE ||
 408                         info->allowed_bearers != info_last->allowed_bearers) {
 409                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 410                                                 DBUS_TYPE_STRING,
 411                                                 append_allowed_bearers,
 412                                                 info);
 413                 info_last->allowed_bearers = info->allowed_bearers;
 414         }
 415
 416         if (session->append_all == TRUE ||
 417                         info->avoid_handover != info_last->avoid_handover) {
 418                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 419                                                 DBUS_TYPE_BOOLEAN,
 420                                                 &info->avoid_handover);
 421                 info_last->avoid_handover = info->avoid_handover;
 422         }
 423
 424         if (session->append_all == TRUE ||
 425                         info->stay_connected != info_last->stay_connected) {
 426                 connman_dbus_dict_append_basic(dict, "StayConnected",
 427                                                 DBUS_TYPE_BOOLEAN,
 428                                                 &info->stay_connected);
 429                 info_last->stay_connected = info->stay_connected;
 430         }
 431
 432         if (session->append_all == TRUE ||
 433                         info->periodic_connect != info_last->periodic_connect) {
 434                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 435                                                 DBUS_TYPE_UINT32,
 436                                                 &info->periodic_connect);
 437                 info_last->periodic_connect = info->periodic_connect;
 438         }
 439
 440         if (session->append_all == TRUE ||
 441                         info->idle_timeout != info_last->idle_timeout) {
 442                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 443                                                 DBUS_TYPE_UINT32,
 444                                                 &info->idle_timeout);
 445                 info_last->idle_timeout = info->idle_timeout;
 446         }
 447
 448         if (session->append_all == TRUE ||
 449                         info->ecall != info_last->ecall) {
 450                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 451                                                 DBUS_TYPE_BOOLEAN,
 452                                                 &info->ecall);
 453                 info_last->ecall = info->ecall;
 454         }
 455
 456         if (session->append_all == TRUE ||
 457                         info->roaming_policy != info_last->roaming_policy) {
 458                 policy = roamingpolicy2string(info->roaming_policy);
 459                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 460                                                 DBUS_TYPE_STRING,
 461                                                 &policy);
 462                 info_last->roaming_policy = info->roaming_policy;
 463         }
 464
 465         if (session->append_all == TRUE ||
 466                         info->marker != info_last->marker) {
 467                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 468                                                 DBUS_TYPE_UINT32,
 469                                                 &info->marker);
 470                 info_last->marker = info->marker;
 471         }
 472
 473         session->append_all = FALSE;
 474         session->info_dirty = FALSE;
 475 }
 476
 477 static gboolean session_notify(gpointer user_data)
 478 {
 479         struct connman_session *session = user_data;
 480         DBusMessage *msg;
 481         DBusMessageIter array, dict;
 482
 483         if (session->info_dirty == FALSE)
 484                 return 0;
 485
 486         DBG("session %p owner %s notify_path %s", session,
 487                 session->owner, session->notify_path);
 488
 489         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 490                                                 CONNMAN_NOTIFICATION_INTERFACE,
 491                                                 "Update");
 492         if (msg == NULL)
 493                 return FALSE;
 494
 495         dbus_message_iter_init_append(msg, &array);
 496         connman_dbus_dict_open(&array, &dict);
 497
 498         append_notify(&dict, session);
 499
 500         connman_dbus_dict_close(&array, &dict);
 501
 502         g_dbus_send_message(connection, msg);
 503
 504         session->info_dirty = FALSE;
 505
 506         return FALSE;
 507 }
 508
 509 static void ipconfig_ipv4_changed(struct connman_session *session)
 510 {
 511         struct session_info *info = session->info;
 512
 513         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 514                                                 "IPv4", append_ipconfig_ipv4,
 515                                                 info->entry->service);
 516 }
 517
 518 static void ipconfig_ipv6_changed(struct connman_session *session)
 519 {
 520         struct session_info *info = session->info;
 521
 522         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 523                                                 "IPv6", append_ipconfig_ipv6,
 524                                                 info->entry->service);
 525 }
 526
 527 static connman_bool_t service_type_match(struct connman_session *session,
 528                                         struct connman_service *service)
 529 {
 530         struct session_info *info = session->info;
 531         GSList *list;
 532
 533         for (list = info->allowed_bearers;
 534                         list != NULL; list = list->next) {
 535                 struct bearer_info *info = list->data;
 536                 enum connman_service_type service_type;
 537
 538                 if (info->match_all == TRUE)
 539                         return TRUE;
 540
 541                 service_type = connman_service_get_type(service);
 542                 if (info->service_type == service_type)
 543                         return TRUE;
 544         }
 545
 546         return FALSE;
 547 }
 548
 549 static connman_bool_t service_match(struct connman_session *session,
 550                                         struct connman_service *service)
 551 {
 552         if (service_type_match(session, service) == FALSE)
 553                 return FALSE;
 554
 555         return TRUE;
 556 }
 557
 558 static int service_type_weight(enum connman_service_type type)
 559 {
 560         /*
 561          * The session doesn't care which service
 562          * to use. Nevertheless we have to sort them
 563          * according their type. The ordering is
 564          *
 565          * 1. Ethernet
 566          * 2. Bluetooth
 567          * 3. WiFi/WiMAX
 568          * 4. GSM/UTMS/3G
 569          */
 570
 571         switch (type) {
 572         case CONNMAN_SERVICE_TYPE_ETHERNET:
 573                 return 4;
 574         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 575                 return 3;
 576         case CONNMAN_SERVICE_TYPE_WIFI:
 577         case CONNMAN_SERVICE_TYPE_WIMAX:
 578                 return 2;
 579         case CONNMAN_SERVICE_TYPE_CELLULAR:
 580                 return 1;
 581         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 582         case CONNMAN_SERVICE_TYPE_SYSTEM:
 583         case CONNMAN_SERVICE_TYPE_GPS:
 584         case CONNMAN_SERVICE_TYPE_VPN:
 585         case CONNMAN_SERVICE_TYPE_GADGET:
 586                 break;
 587         }
 588
 589         return 0;
 590 }
 591
 592 static gint sort_allowed_bearers(struct connman_service *service_a,
 593                                         struct connman_service *service_b,
 594                                         struct connman_session *session)
 595 {
 596         struct session_info *info = session->info;
 597         GSList *list;
 598         enum connman_service_type type_a, type_b;
 599         int weight_a, weight_b;
 600
 601         type_a = connman_service_get_type(service_a);
 602         type_b = connman_service_get_type(service_b);
 603
 604         for (list = info->allowed_bearers;
 605                         list != NULL; list = list->next) {
 606                 struct bearer_info *info = list->data;
 607
 608                 if (info->match_all == TRUE) {
 609                         if (type_a != type_b) {
 610                                 weight_a = service_type_weight(type_a);
 611                                 weight_b = service_type_weight(type_b);
 612
 613                                 if (weight_a > weight_b)
 614                                         return -1;
 615
 616                                 if (weight_a < weight_b)
 617                                         return 1;
 618
 619                                 return 0;
 620                         }
 621                 }
 622
 623                 if (type_a == info->service_type &&
 624                                 type_b == info->service_type) {
 625                         return 0;
 626                 }
 627
 628                 if (type_a == info->service_type &&
 629                                 type_b != info->service_type) {
 630                         return -1;
 631                 }
 632
 633                 if (type_a != info->service_type &&
 634                                 type_b == info->service_type) {
 635                         return 1;
 636                 }
 637         }
 638
 639         return 0;
 640 }
 641
 642 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 643 {
 644         struct service_entry *entry_a = (void *)a;
 645         struct service_entry *entry_b = (void *)b;
 646         struct connman_session *session = user_data;
 647
 648         return sort_allowed_bearers(entry_a->service, entry_b->service,
 649                                 session);
 650 }
 651
 652 static void cleanup_session(gpointer user_data)
 653 {
 654         struct connman_session *session = user_data;
 655         struct session_info *info = session->info;
 656
 657         DBG("remove %s", session->session_path);
 658
 659         g_hash_table_destroy(session->service_hash);
 660         g_sequence_free(session->service_list);
 661
 662         if (info->entry != NULL &&
 663                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 664                 __connman_service_disconnect(info->entry->service);
 665         }
 666
 667         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 668         g_slist_free(info->allowed_bearers);
 669
 670         g_free(session->owner);
 671         g_free(session->session_path);
 672         g_free(session->notify_path);
 673         g_free(session->info);
 674         g_free(session->info_last);
 675
 676         g_free(session);
 677 }
 678
 679 static connman_bool_t is_online(enum connman_service_state state)
 680 {
 681         switch (state) {
 682         case CONNMAN_SERVICE_STATE_UNKNOWN:
 683         case CONNMAN_SERVICE_STATE_IDLE:
 684         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 685         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 686         case CONNMAN_SERVICE_STATE_DISCONNECT:
 687         case CONNMAN_SERVICE_STATE_FAILURE:
 688         case CONNMAN_SERVICE_STATE_READY:
 689                 break;
 690         case CONNMAN_SERVICE_STATE_ONLINE:
 691                 return TRUE;
 692         }
 693
 694         return FALSE;
 695 }
 696
 697 static connman_bool_t is_connecting(enum connman_service_state state)
 698 {
 699         switch (state) {
 700         case CONNMAN_SERVICE_STATE_UNKNOWN:
 701         case CONNMAN_SERVICE_STATE_IDLE:
 702                 break;
 703         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 704         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 705         case CONNMAN_SERVICE_STATE_READY:
 706                 return TRUE;
 707         case CONNMAN_SERVICE_STATE_DISCONNECT:
 708         case CONNMAN_SERVICE_STATE_FAILURE:
 709         case CONNMAN_SERVICE_STATE_ONLINE:
 710                 break;
 711         }
 712
 713         return FALSE;
 714 }
 715
 716 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 717 {
 718         switch (reason) {
 719         case CONNMAN_SESSION_REASON_UNKNOWN:
 720         case CONNMAN_SESSION_REASON_FREE_RIDE:
 721                 break;
 722         case CONNMAN_SESSION_REASON_CONNECT:
 723         case CONNMAN_SESSION_REASON_PERIODIC:
 724                 return TRUE;
 725         }
 726
 727         return FALSE;
 728 }
 729
 730 static connman_bool_t explicit_disconnect(struct session_info *info)
 731 {
 732         if (info->entry == NULL)
 733                 return FALSE;
 734
 735         DBG("reason %s service %p state %d",
 736                 reason2string(info->entry->reason),
 737                 info->entry->service, info->entry->state);
 738
 739         if (info->entry->reason == CONNMAN_SESSION_REASON_UNKNOWN)
 740                 return FALSE;
 741
 742         if (explicit_connect(info->entry->reason) == FALSE)
 743                 return FALSE;
 744
 745         if (__connman_service_session_dec(info->entry->service) == FALSE)
 746                 return FALSE;
 747
 748         if (ecall_info != NULL && ecall_info != info)
 749                 return FALSE;
 750
 751         return TRUE;
 752 }
 753
 754 static gboolean call_disconnect(gpointer user_data)
 755 {
 756         struct connman_service *service = user_data;
 757
 758         /*
 759          * TODO: We should mark this entry as pending work. In case
 760          * disconnect fails we just unassign this session from the
 761          * service and can't do anything later on it
 762          */
 763         DBG("disconnect service %p", service);
 764         __connman_service_disconnect(service);
 765
 766         return FALSE;
 767 }
 768
 769 static gboolean call_connect(gpointer user_data)
 770 {
 771         struct connman_service *service = user_data;
 772
 773         DBG("connect service %p", service);
 774         __connman_service_connect(service);
 775
 776         return FALSE;
 777 }
 778
 779 static void deselect_service(struct session_info *info)
 780 {
 781         struct connman_service *service;
 782         connman_bool_t disconnect, online;
 783
 784         if (info->entry == NULL)
 785                 return;
 786
 787         disconnect = explicit_disconnect(info);
 788
 789         online = is_connecting(info->entry->state) == TRUE ||
 790                         is_online(info->entry->state) == TRUE;
 791
 792         info->online = FALSE;
 793         info->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 794         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 795
 796         service = info->entry->service;
 797         info->entry = NULL;
 798
 799         if (disconnect == TRUE && online == TRUE)
 800                 g_timeout_add_seconds(0, call_disconnect, service);
 801 }
 802
 803 static void deselect_and_disconnect(struct connman_session *session)
 804 {
 805         struct session_info *info = session->info;
 806
 807         deselect_service(info);
 808 }
 809
 810 static void select_online_service(struct session_info *info,
 811                                         struct service_entry *entry)
 812 {
 813         info->online = TRUE;
 814
 815         info->entry = entry;
 816         info->entry->reason = info->reason;
 817
 818         if (explicit_connect(info->reason) == FALSE)
 819                 return;
 820
 821         __connman_service_session_inc(info->entry->service);
 822 }
 823
 824 static void select_offline_service(struct session_info *info,
 825                                         struct service_entry *entry)
 826 {
 827         if (explicit_connect(info->reason) == FALSE) {
 828                 /* Don't select this service. It is not online and we
 829                  * don't call connect on it. This happends for example
 830                  * when the system is idle and we create a new session
 831                  * which is in free ride mode.
 832                  */
 833                 deselect_service(info);
 834                 return;
 835         }
 836
 837         info->online = FALSE;
 838
 839         info->entry = entry;
 840         info->entry->reason = info->reason;
 841
 842         __connman_service_session_inc(info->entry->service);
 843         g_timeout_add_seconds(0, call_connect, info->entry->service);
 844 }
 845
 846 static void select_service(struct session_info *info,
 847                                 struct service_entry *entry)
 848 {
 849         DBG("service %p", entry->service);
 850
 851         if (is_online(entry->state) == TRUE)
 852                 select_online_service(info, entry);
 853         else
 854                 select_offline_service(info, entry);
 855 }
 856
 857 static void select_and_connect(struct connman_session *session,
 858                                 enum connman_session_reason reason)
 859 {
 860         struct session_info *info = session->info;
 861         struct service_entry *entry = NULL;
 862         GSequenceIter *iter;
 863
 864         DBG("session %p reason %s", session, reason2string(reason));
 865
 866         info->reason = reason;
 867
 868         iter = g_sequence_get_begin_iter(session->service_list);
 869
 870         while (g_sequence_iter_is_end(iter) == FALSE) {
 871                 entry = g_sequence_get(iter);
 872
 873                 switch (entry->state) {
 874                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 875                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 876                 case CONNMAN_SERVICE_STATE_READY:
 877                 case CONNMAN_SERVICE_STATE_ONLINE:
 878                 case CONNMAN_SERVICE_STATE_IDLE:
 879                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 880                         select_service(info, entry);
 881                         return;
 882                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 883                 case CONNMAN_SERVICE_STATE_FAILURE:
 884                         break;
 885                 }
 886
 887                 iter = g_sequence_iter_next(iter);
 888         }
 889 }
 890
 891 static void session_changed(struct connman_session *session,
 892                                 enum connman_session_trigger trigger)
 893 {
 894         struct session_info *info = session->info;
 895         struct session_info *info_last = session->info_last;
 896         GSequenceIter *iter;
 897
 898         /*
 899          * TODO: This only a placeholder for the 'real' algorithm to
 900          * play a bit around. So we are going to improve it step by step.
 901          */
 902
 903         DBG("session %p trigger %s", session, trigger2string(trigger));
 904
 905         switch (trigger) {
 906         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 907                 DBG("ignore session changed event");
 908                 return;
 909         case CONNMAN_SESSION_TRIGGER_SETTING:
 910                 if (info->entry != NULL) {
 911                         iter = g_hash_table_lookup(session->service_hash,
 912                                                         info->entry->service);
 913                         if (iter == NULL) {
 914                                 /*
 915                                  * This service is not part of this
 916                                  * session anymore.
 917                                  */
 918                                 deselect_and_disconnect(session);
 919                         }
 920                 }
 921
 922                 if (info->online == FALSE) {
 923                         select_and_connect(session,
 924                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 925                 }
 926
 927                 break;
 928         case CONNMAN_SESSION_TRIGGER_CONNECT:
 929                 if (info->online == TRUE) {
 930                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
 931                                 break;
 932                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 933                         __connman_service_session_inc(info->entry->service);
 934                         break;
 935                 }
 936
 937                 select_and_connect(session,
 938                                 CONNMAN_SESSION_REASON_CONNECT);
 939
 940                 break;
 941         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 942                 deselect_and_disconnect(session);
 943
 944                 break;
 945         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 946                 if (info->online == TRUE) {
 947                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 948                         __connman_service_session_inc(info->entry->service);
 949                         break;
 950                 }
 951
 952                 select_and_connect(session,
 953                                 CONNMAN_SESSION_REASON_PERIODIC);
 954
 955                 break;
 956         case CONNMAN_SESSION_TRIGGER_SERVICE:
 957                 if (info->entry != NULL &&
 958                                 (is_connecting(info->entry->state) == TRUE ||
 959                                         is_online(info->entry->state) == TRUE)) {
 960                         break;
 961                 }
 962
 963                 switch (info->reason) {
 964                 case CONNMAN_SESSION_REASON_CONNECT:
 965                         /*
 966                          * We are not online, we are not connecting, that
 967                          * means we could still have a valid info->entry.
 968                          * Though something has changed from the service layer.
 969                          * Therefore we want to restart the algorithm. Before we
 970                          * can do that we have to cleanup a potientional old entry.
 971                          */
 972                         deselect_and_disconnect(session);
 973                         info->reason = CONNMAN_SESSION_REASON_CONNECT; /* restore value */
 974
 975                         DBG("Retry to find a matching session");
 976                         /*
 977                          * The user called Connect() but there was no
 978                          * matching session available at this point.
 979                          * Now there might be a new one. Let's retry
 980                          * to select and connect
 981                          */
 982                         select_and_connect(session,
 983                                         CONNMAN_SESSION_REASON_CONNECT);
 984                         break;
 985                 case CONNMAN_SESSION_REASON_PERIODIC:
 986                 case CONNMAN_SESSION_REASON_FREE_RIDE:
 987                         if (info->stay_connected == TRUE) {
 988                                 DBG("StayConnected");
 989                                 select_and_connect(session,
 990                                         CONNMAN_SESSION_REASON_CONNECT);
 991                         } else {
 992                                 select_and_connect(session,
 993                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 994                         }
 995                         break;
 996                 case CONNMAN_SESSION_REASON_UNKNOWN:
 997                         break;
 998                 }
 999                 break;
1000         case CONNMAN_SESSION_TRIGGER_ECALL:
1001                 if (info->online == FALSE && info->entry != NULL &&
1002                                 info->entry->service != NULL) {
1003                         deselect_and_disconnect(session);
1004                 }
1005
1006                 break;
1007         }
1008
1009         if (info->entry != info_last->entry)
1010                 session->info_dirty = TRUE;
1011
1012         session_notify(session);
1013 }
1014
1015 static DBusMessage *connect_session(DBusConnection *conn,
1016                                         DBusMessage *msg, void *user_data)
1017 {
1018         struct connman_session *session = user_data;
1019         struct session_info *info = session->info;
1020
1021         DBG("session %p", session);
1022
1023         if (ecall_info != NULL && ecall_info != info)
1024                 return __connman_error_failed(msg, EBUSY);
1025
1026         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1027
1028         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1029 }
1030
1031 static DBusMessage *disconnect_session(DBusConnection *conn,
1032                                         DBusMessage *msg, void *user_data)
1033 {
1034         struct connman_session *session = user_data;
1035         struct session_info *info = session->info;
1036
1037         DBG("session %p", session);
1038
1039         if (ecall_info != NULL && ecall_info != info)
1040                 return __connman_error_failed(msg, EBUSY);
1041
1042         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1043
1044         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1045 }
1046
1047 static struct service_entry *create_service_entry(struct connman_service *service,
1048                                         const char *name,
1049                                         enum connman_service_state state)
1050 {
1051         struct service_entry *entry;
1052         enum connman_service_type type;
1053         int idx;
1054
1055         entry = g_try_new0(struct service_entry, 1);
1056         if (entry == NULL)
1057                 return entry;
1058
1059         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
1060         entry->state = state;
1061         if (name != NULL)
1062                 entry->name = name;
1063         else
1064                 entry->name = "";
1065         entry->service = service;
1066
1067         idx = __connman_service_get_index(entry->service);
1068         entry->ifname = connman_inet_ifname(idx);
1069         if (entry->ifname == NULL)
1070                 entry->ifname = g_strdup("");
1071
1072         type = connman_service_get_type(entry->service);
1073         entry->bearer = service2bearer(type);
1074
1075         return entry;
1076 }
1077
1078 static void destroy_service_entry(gpointer data)
1079 {
1080         struct service_entry *entry = data;
1081
1082         g_free(entry->ifname);
1083
1084         g_free(entry);
1085 }
1086
1087 static void update_allowed_bearers(struct connman_session *session)
1088 {
1089         struct service_entry *entry;
1090         GSequenceIter *iter;
1091
1092         if (session->service_list != NULL) {
1093                 g_hash_table_remove_all(session->service_hash);
1094                 g_sequence_free(session->service_list);
1095         }
1096
1097         session->service_list = __connman_service_get_list(session,
1098                                                         service_match,
1099                                                         create_service_entry,
1100                                                         destroy_service_entry);
1101
1102         g_sequence_sort(session->service_list, sort_services, session);
1103
1104         iter = g_sequence_get_begin_iter(session->service_list);
1105
1106         while (g_sequence_iter_is_end(iter) == FALSE) {
1107                 entry = g_sequence_get(iter);
1108
1109                 DBG("service %p type %s name %s", entry->service,
1110                         service2bearer(connman_service_get_type(entry->service)),
1111                         entry->name);
1112
1113                 g_hash_table_replace(session->service_hash,
1114                                         entry->service, iter);
1115
1116                 iter = g_sequence_iter_next(iter);
1117         }
1118
1119         session->info_dirty = TRUE;
1120 }
1121
1122 static void update_ecall_sessions(struct connman_session *session)
1123 {
1124         struct session_info *info = session->info;
1125         struct connman_session *session_iter;
1126         GHashTableIter iter;
1127         gpointer key, value;
1128
1129         g_hash_table_iter_init(&iter, session_hash);
1130
1131         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1132                 session_iter = value;
1133
1134                 if (session_iter == session)
1135                         continue;
1136
1137                 session_iter->info->ecall = info->ecall;
1138                 session_iter->info_dirty = TRUE;
1139
1140                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1141         }
1142 }
1143
1144 static void update_ecall(struct connman_session *session)
1145 {
1146         struct session_info *info = session->info;
1147         struct session_info *info_last = session->info_last;
1148
1149         DBG("session %p ecall_info %p ecall %d -> %d", session,
1150                 ecall_info, info_last->ecall, info->ecall);
1151
1152         if (ecall_info == NULL) {
1153                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1154                         goto err;
1155
1156                 ecall_info = info;
1157         } else if (ecall_info == info) {
1158                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1159                         goto err;
1160
1161                 ecall_info = NULL;
1162         } else {
1163                 goto err;
1164         }
1165
1166         update_ecall_sessions(session);
1167
1168         session->info_dirty = TRUE;
1169         return;
1170
1171 err:
1172         /* not a valid transition */
1173         info->ecall = info_last->ecall;
1174 }
1175
1176 static DBusMessage *change_session(DBusConnection *conn,
1177                                         DBusMessage *msg, void *user_data)
1178 {
1179         struct connman_session *session = user_data;
1180         struct session_info *info = session->info;
1181         struct session_info *info_last = session->info_last;
1182         DBusMessageIter iter, value;
1183         const char *name;
1184         GSList *allowed_bearers;
1185
1186         DBG("session %p", session);
1187         if (dbus_message_iter_init(msg, &iter) == FALSE)
1188                 return __connman_error_invalid_arguments(msg);
1189
1190         dbus_message_iter_get_basic(&iter, &name);
1191         dbus_message_iter_next(&iter);
1192         dbus_message_iter_recurse(&iter, &value);
1193
1194         switch (dbus_message_iter_get_arg_type(&value)) {
1195         case DBUS_TYPE_ARRAY:
1196                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1197                         allowed_bearers = session_parse_allowed_bearers(&value);
1198
1199                         g_slist_foreach(info->allowed_bearers,
1200                                         cleanup_bearer_info, NULL);
1201                         g_slist_free(info->allowed_bearers);
1202
1203                         if (allowed_bearers == NULL) {
1204                                 allowed_bearers = session_allowed_bearers_any();
1205
1206                                 if (allowed_bearers == NULL)
1207                                         return __connman_error_failed(msg, ENOMEM);
1208                         }
1209
1210                         info->allowed_bearers = allowed_bearers;
1211
1212                         update_allowed_bearers(session);
1213                 } else {
1214                         goto err;
1215                 }
1216                 break;
1217         case DBUS_TYPE_BOOLEAN:
1218                 if (g_str_equal(name, "Priority") == TRUE) {
1219                         dbus_message_iter_get_basic(&value,
1220                                         &info->priority);
1221
1222                         if (info_last->priority != info->priority)
1223                                 session->info_dirty = TRUE;
1224                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1225                         dbus_message_iter_get_basic(&value,
1226                                         &info->avoid_handover);
1227
1228                         if (info_last->avoid_handover != info->avoid_handover)
1229                                 session->info_dirty = TRUE;
1230                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1231                         dbus_message_iter_get_basic(&value,
1232                                         &info->stay_connected);
1233
1234                         if (info_last->stay_connected != info->stay_connected)
1235                                 session->info_dirty = TRUE;
1236                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1237                         dbus_message_iter_get_basic(&value,
1238                                         &info->ecall);
1239
1240                         update_ecall(session);
1241                 } else {
1242                         goto err;
1243                 }
1244                 break;
1245         case DBUS_TYPE_UINT32:
1246                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1247                         dbus_message_iter_get_basic(&value,
1248                                         &info->periodic_connect);
1249
1250                         if (info_last->periodic_connect != info->periodic_connect)
1251                                 session->info_dirty = TRUE;
1252                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1253                         dbus_message_iter_get_basic(&value,
1254                                         &info->idle_timeout);
1255
1256                         if (info_last->idle_timeout != info->idle_timeout)
1257                                 session->info_dirty = TRUE;
1258                 } else {
1259                         goto err;
1260                 }
1261                 break;
1262         case DBUS_TYPE_STRING:
1263                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1264                         const char *val;
1265                         dbus_message_iter_get_basic(&value, &val);
1266                         info->roaming_policy =
1267                                         string2roamingpolicy(val);
1268
1269                         if (info_last->roaming_policy != info->roaming_policy)
1270                                 session->info_dirty = TRUE;
1271                 } else {
1272                         goto err;
1273                 }
1274                 break;
1275         default:
1276                 goto err;
1277         }
1278
1279         if (session->info_dirty == TRUE)
1280                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1281
1282         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1283
1284 err:
1285         return __connman_error_invalid_arguments(msg);
1286 }
1287
1288 static void release_session(gpointer key, gpointer value, gpointer user_data)
1289 {
1290         struct connman_session *session = value;
1291         DBusMessage *message;
1292
1293         DBG("owner %s path %s", session->owner, session->notify_path);
1294
1295         if (session->notify_watch > 0)
1296                 g_dbus_remove_watch(connection, session->notify_watch);
1297
1298         g_dbus_unregister_interface(connection, session->session_path,
1299                                                 CONNMAN_SESSION_INTERFACE);
1300
1301         message = dbus_message_new_method_call(session->owner,
1302                                                 session->notify_path,
1303                                                 CONNMAN_NOTIFICATION_INTERFACE,
1304                                                 "Release");
1305         if (message == NULL)
1306                 return;
1307
1308         dbus_message_set_no_reply(message, TRUE);
1309
1310         g_dbus_send_message(connection, message);
1311 }
1312
1313 static int session_disconnect(struct connman_session *session)
1314 {
1315         DBG("session %p, %s", session, session->owner);
1316
1317         if (session->notify_watch > 0)
1318                 g_dbus_remove_watch(connection, session->notify_watch);
1319
1320         g_dbus_unregister_interface(connection, session->session_path,
1321                                                 CONNMAN_SESSION_INTERFACE);
1322
1323         deselect_and_disconnect(session);
1324
1325         g_hash_table_remove(session_hash, session->session_path);
1326
1327         return 0;
1328 }
1329
1330 static void owner_disconnect(DBusConnection *conn, void *user_data)
1331 {
1332         struct connman_session *session = user_data;
1333
1334         DBG("session %p, %s died", session, session->owner);
1335
1336         session_disconnect(session);
1337 }
1338
1339 static DBusMessage *destroy_session(DBusConnection *conn,
1340                                         DBusMessage *msg, void *user_data)
1341 {
1342         struct connman_session *session = user_data;
1343
1344         DBG("session %p", session);
1345
1346         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1347 }
1348
1349 static GDBusMethodTable session_methods[] = {
1350         { "Destroy",    "",   "", destroy_session    },
1351         { "Connect",    "",   "", connect_session    },
1352         { "Disconnect", "",   "", disconnect_session },
1353         { "Change",     "sv", "", change_session     },
1354         { },
1355 };
1356
1357 int __connman_session_create(DBusMessage *msg)
1358 {
1359         const char *owner, *notify_path;
1360         char *session_path = NULL;
1361         DBusMessageIter iter, array;
1362         struct connman_session *session = NULL;
1363         struct session_info *info, *info_last;
1364
1365         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1366         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1367         enum connman_session_roaming_policy roaming_policy =
1368                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1369         GSList *allowed_bearers = NULL;
1370         unsigned int periodic_connect = 0;
1371         unsigned int idle_timeout = 0;
1372
1373         int err;
1374
1375         owner = dbus_message_get_sender(msg);
1376
1377         DBG("owner %s", owner);
1378
1379         if (ecall_info != NULL) {
1380                 /*
1381                  * If there is an emergency call already going on,
1382                  * ignore session creation attempt
1383                  */
1384                 err = -EBUSY;
1385                 goto err;
1386         }
1387
1388         dbus_message_iter_init(msg, &iter);
1389         dbus_message_iter_recurse(&iter, &array);
1390
1391         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1392                 DBusMessageIter entry, value;
1393                 const char *key, *val;
1394
1395                 dbus_message_iter_recurse(&array, &entry);
1396                 dbus_message_iter_get_basic(&entry, &key);
1397
1398                 dbus_message_iter_next(&entry);
1399                 dbus_message_iter_recurse(&entry, &value);
1400
1401                 switch (dbus_message_iter_get_arg_type(&value)) {
1402                 case DBUS_TYPE_ARRAY:
1403                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1404                                 allowed_bearers =
1405                                         session_parse_allowed_bearers(&value);
1406                         } else {
1407                                 return -EINVAL;
1408                         }
1409                         break;
1410                 case DBUS_TYPE_BOOLEAN:
1411                         if (g_str_equal(key, "Priority") == TRUE) {
1412                                 dbus_message_iter_get_basic(&value,
1413                                                         &priority);
1414                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1415                                 dbus_message_iter_get_basic(&value,
1416                                                         &avoid_handover);
1417                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1418                                 dbus_message_iter_get_basic(&value,
1419                                                         &stay_connected);
1420                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1421                                 dbus_message_iter_get_basic(&value,
1422                                                         &ecall);
1423                         } else {
1424                                 return -EINVAL;
1425                         }
1426                         break;
1427                 case DBUS_TYPE_UINT32:
1428                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1429                                 dbus_message_iter_get_basic(&value,
1430                                                         &periodic_connect);
1431                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1432                                 dbus_message_iter_get_basic(&value,
1433                                                         &idle_timeout);
1434                         } else {
1435                                 return -EINVAL;
1436                         }
1437                         break;
1438                 case DBUS_TYPE_STRING:
1439                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1440                                 dbus_message_iter_get_basic(&value, &val);
1441                                 roaming_policy = string2roamingpolicy(val);
1442                         } else {
1443                                 return -EINVAL;
1444                         }
1445                 }
1446                 dbus_message_iter_next(&array);
1447         }
1448
1449         dbus_message_iter_next(&iter);
1450         dbus_message_iter_get_basic(&iter, &notify_path);
1451
1452         if (notify_path == NULL) {
1453                 err = -EINVAL;
1454                 goto err;
1455         }
1456
1457         session_path = g_strdup_printf("/sessions%s", notify_path);
1458         if (session_path == NULL) {
1459                 err = -ENOMEM;
1460                 goto err;
1461         }
1462
1463         session = g_hash_table_lookup(session_hash, session_path);
1464         if (session != NULL) {
1465                 session = NULL;
1466                 err = -EEXIST;
1467                 goto err;
1468         }
1469
1470         session = g_try_new0(struct connman_session, 1);
1471         if (session == NULL) {
1472                 err = -ENOMEM;
1473                 goto err;
1474         }
1475
1476         session->info = g_try_new0(struct session_info, 1);
1477         if (session->info == NULL) {
1478                 err = -ENOMEM;
1479                 goto err;
1480         }
1481
1482         session->info_last = g_try_new0(struct session_info, 1);
1483         if (session->info_last == NULL) {
1484                 err = -ENOMEM;
1485                 goto err;
1486         }
1487
1488         info = session->info;
1489         info_last = session->info_last;
1490
1491         session->owner = g_strdup(owner);
1492         session->session_path = session_path;
1493         session->notify_path = g_strdup(notify_path);
1494         session->notify_watch =
1495                 g_dbus_add_disconnect_watch(connection, session->owner,
1496                                         owner_disconnect, session, NULL);
1497
1498         session->service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1499                                                 NULL, NULL);
1500
1501         info->online = FALSE;
1502         info->priority = priority;
1503         info->avoid_handover = avoid_handover;
1504         info->stay_connected = stay_connected;
1505         info->periodic_connect = periodic_connect;
1506         info->idle_timeout = idle_timeout;
1507         info->ecall = ecall;
1508         info->roaming_policy = roaming_policy;
1509         info->entry = NULL;
1510         info->marker = 0;
1511
1512         if (allowed_bearers == NULL) {
1513                 info->allowed_bearers =
1514                                 session_allowed_bearers_any();
1515
1516                 if (info->allowed_bearers == NULL) {
1517                         err = -ENOMEM;
1518                         goto err;
1519                 }
1520         } else {
1521                 info->allowed_bearers = allowed_bearers;
1522         }
1523
1524         g_hash_table_replace(session_hash, session->session_path, session);
1525
1526         DBG("add %s", session->session_path);
1527
1528         if (g_dbus_register_interface(connection, session->session_path,
1529                                         CONNMAN_SESSION_INTERFACE,
1530                                         session_methods, NULL,
1531                                         NULL, session, NULL) == FALSE) {
1532                 connman_error("Failed to register %s", session->session_path);
1533                 g_hash_table_remove(session_hash, session->session_path);
1534                 session = NULL;
1535
1536                 err = -EINVAL;
1537                 goto err;
1538         }
1539
1540         g_dbus_send_reply(connection, msg,
1541                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1542                                 DBUS_TYPE_INVALID);
1543
1544
1545         update_allowed_bearers(session);
1546         if (info->ecall == TRUE) {
1547                 ecall_info = info;
1548                 update_ecall_sessions(session);
1549         }
1550
1551         info_last->online = info->online;
1552         info_last->priority = info->priority;
1553         info_last->avoid_handover = info->avoid_handover;
1554         info_last->stay_connected = info->stay_connected;
1555         info_last->periodic_connect = info->periodic_connect;
1556         info_last->idle_timeout = info->idle_timeout;
1557         info_last->ecall = info->ecall;
1558         info_last->roaming_policy = info->roaming_policy;
1559         info_last->entry = info->entry;
1560         info_last->marker = info->marker;
1561         info_last->allowed_bearers = info->allowed_bearers;
1562
1563         session->info_dirty = TRUE;
1564         session->append_all = TRUE;
1565
1566         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1567
1568         return 0;
1569
1570 err:
1571         connman_error("Failed to create session");
1572
1573         if (session != NULL) {
1574                 if (session->info_last != NULL)
1575                         g_free(session->info_last);
1576                 if (session->info != NULL)
1577                         g_free(session->info);
1578                 g_free(session);
1579         }
1580
1581         g_free(session_path);
1582
1583         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1584         g_slist_free(allowed_bearers);
1585
1586         return err;
1587 }
1588
1589 int __connman_session_destroy(DBusMessage *msg)
1590 {
1591         const char *owner, *session_path;
1592         struct connman_session *session;
1593
1594         owner = dbus_message_get_sender(msg);
1595
1596         DBG("owner %s", owner);
1597
1598         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1599                                                         DBUS_TYPE_INVALID);
1600         if (session_path == NULL)
1601                 return -EINVAL;
1602
1603         session = g_hash_table_lookup(session_hash, session_path);
1604         if (session == NULL)
1605                 return -EINVAL;
1606
1607         if (g_strcmp0(owner, session->owner) != 0)
1608                 return -EACCES;
1609
1610         session_disconnect(session);
1611
1612         return 0;
1613 }
1614
1615 connman_bool_t __connman_session_mode()
1616 {
1617         return sessionmode;
1618 }
1619
1620 void __connman_session_set_mode(connman_bool_t enable)
1621 {
1622         DBG("enable %d", enable);
1623
1624         sessionmode = enable;
1625
1626         if (sessionmode == TRUE)
1627                 __connman_service_disconnect_all();
1628 }
1629
1630 static void service_add(struct connman_service *service,
1631                         const char *name)
1632 {
1633         GHashTableIter iter;
1634         GSequenceIter *iter_service_list;
1635         gpointer key, value;
1636         struct connman_session *session;
1637         struct service_entry *entry;
1638
1639         DBG("service %p", service);
1640
1641         g_hash_table_iter_init(&iter, session_hash);
1642
1643         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1644                 session = value;
1645
1646                 if (service_match(session, service) == FALSE)
1647                         continue;
1648
1649                 entry = create_service_entry(service, name,
1650                                                 CONNMAN_SERVICE_STATE_IDLE);
1651                 if (entry == NULL)
1652                         continue;
1653
1654                 iter_service_list =
1655                         g_sequence_insert_sorted(session->service_list,
1656                                                         entry, sort_services,
1657                                                         session);
1658
1659                 g_hash_table_replace(session->service_hash, service,
1660                                         iter_service_list);
1661
1662                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1663         }
1664 }
1665
1666 static void service_remove(struct connman_service *service)
1667 {
1668
1669         GHashTableIter iter;
1670         gpointer key, value;
1671         struct connman_session *session;
1672         struct session_info *info;
1673
1674         DBG("service %p", service);
1675
1676         g_hash_table_iter_init(&iter, session_hash);
1677
1678         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1679                 GSequenceIter *iter;
1680                 session = value;
1681                 info = session->info;
1682
1683                 iter = g_hash_table_lookup(session->service_hash, service);
1684                 if (iter == NULL)
1685                         continue;
1686
1687                 g_sequence_remove(iter);
1688
1689                 if (info->entry != NULL && info->entry->service == service)
1690                         info->entry = NULL;
1691                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1692         }
1693 }
1694
1695 static void service_state_changed(struct connman_service *service,
1696                                         enum connman_service_state state)
1697 {
1698         GHashTableIter iter;
1699         gpointer key, value;
1700         struct connman_session *session;
1701         struct session_info *info, *info_last;
1702
1703         DBG("service %p state %d", service, state);
1704
1705         g_hash_table_iter_init(&iter, session_hash);
1706
1707         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1708                 GSequenceIter *service_iter;
1709
1710                 session = value;
1711                 info = session->info;
1712                 info_last = session->info_last;
1713
1714                 service_iter = g_hash_table_lookup(session->service_hash, service);
1715                 if (service_iter != NULL) {
1716                         struct service_entry *entry;
1717
1718                         entry = g_sequence_get(service_iter);
1719                         entry->state = state;
1720
1721                         if (info->entry == entry) {
1722                                 info->online = is_online(entry->state);
1723                                 if (info_last->online != info->online)
1724                                         session->info_dirty = TRUE;
1725                         }
1726                 }
1727
1728                 session_changed(session,
1729                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1730         }
1731 }
1732
1733 static void ipconfig_changed(struct connman_service *service,
1734                                 struct connman_ipconfig *ipconfig)
1735 {
1736         GHashTableIter iter;
1737         gpointer key, value;
1738         struct connman_session *session;
1739         struct session_info *info;
1740         enum connman_ipconfig_type type;
1741
1742         DBG("service %p ipconfig %p", service, ipconfig);
1743
1744         type = __connman_ipconfig_get_config_type(ipconfig);
1745
1746         g_hash_table_iter_init(&iter, session_hash);
1747
1748         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1749                 session = value;
1750                 info = session->info;
1751
1752                 if (info->entry != NULL && info->entry->service == service) {
1753                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1754                                 ipconfig_ipv4_changed(session);
1755                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1756                                 ipconfig_ipv6_changed(session);
1757                 }
1758         }
1759 }
1760
1761 static struct connman_notifier session_notifier = {
1762         .name                   = "session",
1763         .service_add            = service_add,
1764         .service_remove         = service_remove,
1765         .service_state_changed  = service_state_changed,
1766         .ipconfig_changed       = ipconfig_changed,
1767 };
1768
1769 int __connman_session_init(void)
1770 {
1771         int err;
1772
1773         DBG("");
1774
1775         connection = connman_dbus_get_connection();
1776         if (connection == NULL)
1777                 return -1;
1778
1779         err = connman_notifier_register(&session_notifier);
1780         if (err < 0) {
1781                 dbus_connection_unref(connection);
1782                 return err;
1783         }
1784
1785         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1786                                                 NULL, cleanup_session);
1787
1788         sessionmode = FALSE;
1789         return 0;
1790 }
1791
1792 void __connman_session_cleanup(void)
1793 {
1794         DBG("");
1795
1796         if (connection == NULL)
1797                 return;
1798
1799         connman_notifier_unregister(&session_notifier);
1800
1801         g_hash_table_foreach(session_hash, release_session, NULL);
1802         g_hash_table_destroy(session_hash);
1803         session_hash = NULL;
1804
1805         dbus_connection_unref(connection);
1806 }