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         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                 break;
 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 connman_session *session)
 731 {
 732         struct session_info *info = session->info;
 733
 734         if (info->entry == NULL)
 735                 return FALSE;
 736
 737         DBG("session %p, reason %s service %p state %d",
 738                 session, reason2string(info->entry->reason),
 739                 info->entry->service, info->entry->state);
 740
 741         if (explicit_connect(info->entry->reason) == FALSE)
 742                 return FALSE;
 743
 744         if (__connman_service_session_dec(info->entry->service) == FALSE)
 745                 return FALSE;
 746
 747         if (ecall_session != NULL && ecall_session != session)
 748                 return FALSE;
 749
 750         return TRUE;
 751 }
 752
 753 static void test_and_disconnect(struct connman_session *session)
 754 {
 755         struct session_info *info = session->info;
 756         struct service_entry *entry;
 757         connman_bool_t disconnect;
 758
 759         disconnect = explicit_disconnect(session);
 760
 761         entry = info->entry;
 762
 763         info->online = FALSE;
 764         info->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 765         info->entry = NULL;
 766
 767         if (disconnect == TRUE) {
 768                 DBG("disconnect service %p", entry->service);
 769
 770                 /*
 771                  * TODO: We should mark this entry as pending work. In case
 772                  * disconnect fails we just unassign this session from the
 773                  * service and can't do anything later on it
 774                  */
 775                 __connman_service_disconnect(entry->service);
 776         }
 777 }
 778
 779 static void select_and_connect(struct connman_session *session,
 780                                 enum connman_session_reason reason)
 781 {
 782         struct session_info *info = session->info;
 783         struct service_entry *entry = NULL;
 784         GSequenceIter *iter;
 785         connman_bool_t do_connect = FALSE;
 786
 787         DBG("session %p reason %s", session, reason2string(reason));
 788
 789         info->reason = reason;
 790
 791         iter = g_sequence_get_begin_iter(session->service_list);
 792
 793         while (g_sequence_iter_is_end(iter) == FALSE) {
 794                 entry = g_sequence_get(iter);
 795
 796                 switch (entry->state) {
 797                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 798                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 799                 case CONNMAN_SERVICE_STATE_READY:
 800                 case CONNMAN_SERVICE_STATE_ONLINE:
 801                         /* connecting or connected */
 802                         break;
 803                 case CONNMAN_SERVICE_STATE_IDLE:
 804                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 805                         if (explicit_connect(reason) == TRUE)
 806                                 do_connect = TRUE;
 807                         break;
 808                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 809                 case CONNMAN_SERVICE_STATE_FAILURE:
 810                         entry = NULL;
 811                         break;
 812                 }
 813
 814                 if (entry != NULL)
 815                         break;
 816
 817                 iter = g_sequence_iter_next(iter);
 818         }
 819
 820         if (info->entry != NULL && info->entry != entry)
 821                 test_and_disconnect(session);
 822
 823         if (entry != NULL) {
 824                 info->entry = entry;
 825                 info->entry->reason = reason;
 826
 827                 if (explicit_connect(reason) == TRUE)
 828                         __connman_service_session_inc(info->entry->service);
 829
 830                 if (do_connect == TRUE)
 831                         __connman_service_connect(info->entry->service);
 832                 else
 833                         info->online = is_online(entry->state);
 834         }
 835 }
 836
 837 static void session_changed(struct connman_session *session,
 838                                 enum connman_session_trigger trigger)
 839 {
 840         struct session_info *info = session->info;
 841         struct session_info *info_last = session->info_last;
 842         GSequenceIter *iter;
 843
 844         /*
 845          * TODO: This only a placeholder for the 'real' algorithm to
 846          * play a bit around. So we are going to improve it step by step.
 847          */
 848
 849         DBG("session %p trigger %s", session, trigger2string(trigger));
 850
 851         switch (trigger) {
 852         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 853                 DBG("ignore session changed event");
 854                 return;
 855         case CONNMAN_SESSION_TRIGGER_SETTING:
 856                 if (info->entry != NULL) {
 857                         iter = g_hash_table_lookup(session->service_hash,
 858                                                         info->entry->service);
 859                         if (iter == NULL) {
 860                                 /*
 861                                  * This service is not part of this
 862                                  * session anymore.
 863                                  */
 864                                 test_and_disconnect(session);
 865                         }
 866                 }
 867
 868                 if (info->online == FALSE) {
 869                         select_and_connect(session,
 870                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 871                 }
 872
 873                 break;
 874         case CONNMAN_SESSION_TRIGGER_CONNECT:
 875                 if (info->online == TRUE) {
 876                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 877                         __connman_service_session_inc(info->entry->service);
 878                         break;
 879                 }
 880
 881                 select_and_connect(session,
 882                                 CONNMAN_SESSION_REASON_CONNECT);
 883
 884                 break;
 885         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 886                 test_and_disconnect(session);
 887
 888                 break;
 889         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 890                 if (info->online == TRUE) {
 891                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 892                         __connman_service_session_inc(info->entry->service);
 893                         break;
 894                 }
 895
 896                 select_and_connect(session,
 897                                 CONNMAN_SESSION_REASON_PERIODIC);
 898
 899                 break;
 900         case CONNMAN_SESSION_TRIGGER_SERVICE:
 901                 if (info->online == TRUE)
 902                         break;
 903
 904                 if (info->entry != NULL &&
 905                                 is_connecting(info->entry->state) == TRUE) {
 906                         break;
 907                 }
 908
 909                 if (info->reason == CONNMAN_SESSION_REASON_CONNECT) {
 910                         DBG("Retry to find a matching session");
 911                         /*
 912                          * The user called Connect() but there was no
 913                          * matching session available at this point.
 914                          * Now there might be a new one. Let's retry
 915                          * to select and connect
 916                          */
 917                         select_and_connect(session,
 918                                         CONNMAN_SESSION_REASON_CONNECT);
 919
 920                         break;
 921                 }
 922
 923                 if (info->stay_connected == TRUE) {
 924                         DBG("StayConnected");
 925                         select_and_connect(session,
 926                                         CONNMAN_SESSION_REASON_CONNECT);
 927
 928                         break;
 929                 }
 930
 931                 select_and_connect(session,
 932                                 CONNMAN_SESSION_REASON_FREE_RIDE);
 933
 934                 break;
 935         case CONNMAN_SESSION_TRIGGER_ECALL:
 936                 if (info->online == FALSE && info->entry->service != NULL)
 937                         test_and_disconnect(session);
 938
 939                 break;
 940         }
 941
 942         if (info->entry != info_last->entry)
 943                 session->info_dirty = TRUE;
 944
 945         session_notify(session);
 946 }
 947
 948 static DBusMessage *connect_session(DBusConnection *conn,
 949                                         DBusMessage *msg, void *user_data)
 950 {
 951         struct connman_session *session = user_data;
 952
 953         DBG("session %p", session);
 954
 955         if (ecall_session != NULL && ecall_session != session)
 956                 return __connman_error_failed(msg, EBUSY);
 957
 958         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 959
 960         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 961 }
 962
 963 static DBusMessage *disconnect_session(DBusConnection *conn,
 964                                         DBusMessage *msg, void *user_data)
 965 {
 966         struct connman_session *session = user_data;
 967
 968         DBG("session %p", session);
 969
 970         if (ecall_session != NULL && ecall_session != session)
 971                 return __connman_error_failed(msg, EBUSY);
 972
 973         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 974
 975         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 976 }
 977
 978 static struct service_entry *create_service_entry(struct connman_service *service,
 979                                         const char *name,
 980                                         enum connman_service_state state)
 981 {
 982         struct service_entry *entry;
 983         enum connman_service_type type;
 984         int idx;
 985
 986         entry = g_try_new0(struct service_entry, 1);
 987         if (entry == NULL)
 988                 return entry;
 989
 990         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 991         entry->state = state;
 992         entry->name = name;
 993         entry->service = service;
 994
 995         idx = __connman_service_get_index(entry->service);
 996         entry->ifname = connman_inet_ifname(idx);
 997         if (entry->ifname == NULL)
 998                 entry->ifname = "";
 999
1000         type = connman_service_get_type(entry->service);
1001         entry->bearer = service2bearer(type);
1002
1003         return entry;
1004 }
1005
1006 static void destroy_service_entry(gpointer data)
1007 {
1008         struct service_entry *entry = data;
1009
1010         g_free(entry);
1011 }
1012
1013 static void update_allowed_bearers(struct connman_session *session)
1014 {
1015         struct service_entry *entry;
1016         GSequenceIter *iter;
1017
1018         if (session->service_list != NULL) {
1019                 g_hash_table_remove_all(session->service_hash);
1020                 g_sequence_free(session->service_list);
1021         }
1022
1023         session->service_list = __connman_service_get_list(session,
1024                                                         service_match,
1025                                                         create_service_entry,
1026                                                         destroy_service_entry);
1027
1028         g_sequence_sort(session->service_list, sort_services, session);
1029
1030         iter = g_sequence_get_begin_iter(session->service_list);
1031
1032         while (g_sequence_iter_is_end(iter) == FALSE) {
1033                 entry = g_sequence_get(iter);
1034
1035                 DBG("service %p type %s name %s", entry->service,
1036                         service2bearer(connman_service_get_type(entry->service)),
1037                         entry->name);
1038
1039                 g_hash_table_replace(session->service_hash,
1040                                         entry->service, iter);
1041
1042                 iter = g_sequence_iter_next(iter);
1043         }
1044
1045         session->info_dirty = TRUE;
1046 }
1047
1048 static void update_ecall_sessions(struct connman_session *session)
1049 {
1050         struct session_info *info = session->info;
1051         struct connman_session *session_iter;
1052         GHashTableIter iter;
1053         gpointer key, value;
1054
1055         g_hash_table_iter_init(&iter, session_hash);
1056
1057         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1058                 session_iter = value;
1059
1060                 if (session_iter == session)
1061                         continue;
1062
1063                 session_iter->info->ecall = info->ecall;
1064                 session_iter->info_dirty = TRUE;
1065
1066                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1067         }
1068 }
1069
1070 static void update_ecall(struct connman_session *session)
1071 {
1072         struct session_info *info = session->info;
1073         struct session_info *info_last = session->info_last;
1074
1075         DBG("session %p ecall_session %p ecall %d -> %d", session,
1076                 ecall_session, info_last->ecall, info->ecall);
1077
1078         if (ecall_session == NULL) {
1079                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1080                         goto err;
1081
1082                 ecall_session = session;
1083         } else if (ecall_session == session) {
1084                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1085                         goto err;
1086
1087                 ecall_session = NULL;
1088         } else {
1089                 goto err;
1090         }
1091
1092         update_ecall_sessions(session);
1093
1094         session->info_dirty = TRUE;
1095         return;
1096
1097 err:
1098         /* not a valid transition */
1099         info->ecall = info_last->ecall;
1100 }
1101
1102 static DBusMessage *change_session(DBusConnection *conn,
1103                                         DBusMessage *msg, void *user_data)
1104 {
1105         struct connman_session *session = user_data;
1106         struct session_info *info = session->info;
1107         struct session_info *info_last = session->info_last;
1108         DBusMessageIter iter, value;
1109         const char *name;
1110         GSList *allowed_bearers;
1111
1112         DBG("session %p", session);
1113         if (dbus_message_iter_init(msg, &iter) == FALSE)
1114                 return __connman_error_invalid_arguments(msg);
1115
1116         dbus_message_iter_get_basic(&iter, &name);
1117         dbus_message_iter_next(&iter);
1118         dbus_message_iter_recurse(&iter, &value);
1119
1120         switch (dbus_message_iter_get_arg_type(&value)) {
1121         case DBUS_TYPE_ARRAY:
1122                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1123                         allowed_bearers = session_parse_allowed_bearers(&value);
1124
1125                         g_slist_foreach(info->allowed_bearers,
1126                                         cleanup_bearer_info, NULL);
1127                         g_slist_free(info->allowed_bearers);
1128
1129                         if (allowed_bearers == NULL) {
1130                                 allowed_bearers = session_allowed_bearers_any();
1131
1132                                 if (allowed_bearers == NULL)
1133                                         return __connman_error_failed(msg, ENOMEM);
1134                         }
1135
1136                         info->allowed_bearers = allowed_bearers;
1137
1138                         update_allowed_bearers(session);
1139                 } else {
1140                         goto err;
1141                 }
1142                 break;
1143         case DBUS_TYPE_BOOLEAN:
1144                 if (g_str_equal(name, "Priority") == TRUE) {
1145                         dbus_message_iter_get_basic(&value,
1146                                         &info->priority);
1147
1148                         if (info_last->priority != info->priority)
1149                                 session->info_dirty = TRUE;
1150                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1151                         dbus_message_iter_get_basic(&value,
1152                                         &info->avoid_handover);
1153
1154                         if (info_last->avoid_handover != info->avoid_handover)
1155                                 session->info_dirty = TRUE;
1156                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1157                         dbus_message_iter_get_basic(&value,
1158                                         &info->stay_connected);
1159
1160                         if (info_last->stay_connected != info->stay_connected)
1161                                 session->info_dirty = TRUE;
1162                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1163                         dbus_message_iter_get_basic(&value,
1164                                         &info->ecall);
1165
1166                         update_ecall(session);
1167                 } else {
1168                         goto err;
1169                 }
1170                 break;
1171         case DBUS_TYPE_UINT32:
1172                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1173                         dbus_message_iter_get_basic(&value,
1174                                         &info->periodic_connect);
1175
1176                         if (info_last->periodic_connect != info->periodic_connect)
1177                                 session->info_dirty = TRUE;
1178                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1179                         dbus_message_iter_get_basic(&value,
1180                                         &info->idle_timeout);
1181
1182                         if (info_last->idle_timeout != info->idle_timeout)
1183                                 session->info_dirty = TRUE;
1184                 } else {
1185                         goto err;
1186                 }
1187                 break;
1188         case DBUS_TYPE_STRING:
1189                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1190                         const char *val;
1191                         dbus_message_iter_get_basic(&value, &val);
1192                         info->roaming_policy =
1193                                         string2roamingpolicy(val);
1194
1195                         if (info_last->roaming_policy != info->roaming_policy)
1196                                 session->info_dirty = TRUE;
1197                 } else {
1198                         goto err;
1199                 }
1200                 break;
1201         default:
1202                 goto err;
1203         }
1204
1205         if (session->info_dirty == TRUE)
1206                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1207
1208         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1209
1210 err:
1211         return __connman_error_invalid_arguments(msg);
1212 }
1213
1214 static void release_session(gpointer key, gpointer value, gpointer user_data)
1215 {
1216         struct connman_session *session = value;
1217         DBusMessage *message;
1218
1219         DBG("owner %s path %s", session->owner, session->notify_path);
1220
1221         if (session->notify_watch > 0)
1222                 g_dbus_remove_watch(connection, session->notify_watch);
1223
1224         g_dbus_unregister_interface(connection, session->session_path,
1225                                                 CONNMAN_SESSION_INTERFACE);
1226
1227         message = dbus_message_new_method_call(session->owner,
1228                                                 session->notify_path,
1229                                                 CONNMAN_NOTIFICATION_INTERFACE,
1230                                                 "Release");
1231         if (message == NULL)
1232                 return;
1233
1234         dbus_message_set_no_reply(message, TRUE);
1235
1236         g_dbus_send_message(connection, message);
1237 }
1238
1239 static int session_disconnect(struct connman_session *session)
1240 {
1241         DBG("session %p, %s", session, session->owner);
1242
1243         if (session->notify_watch > 0)
1244                 g_dbus_remove_watch(connection, session->notify_watch);
1245
1246         g_dbus_unregister_interface(connection, session->session_path,
1247                                                 CONNMAN_SESSION_INTERFACE);
1248
1249         test_and_disconnect(session);
1250
1251         g_hash_table_remove(session_hash, session->session_path);
1252
1253         return 0;
1254 }
1255
1256 static void owner_disconnect(DBusConnection *conn, void *user_data)
1257 {
1258         struct connman_session *session = user_data;
1259
1260         DBG("session %p, %s died", session, session->owner);
1261
1262         session_disconnect(session);
1263 }
1264
1265 static DBusMessage *destroy_session(DBusConnection *conn,
1266                                         DBusMessage *msg, void *user_data)
1267 {
1268         struct connman_session *session = user_data;
1269
1270         DBG("session %p", session);
1271
1272         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1273 }
1274
1275 static GDBusMethodTable session_methods[] = {
1276         { "Destroy",    "",   "", destroy_session    },
1277         { "Connect",    "",   "", connect_session    },
1278         { "Disconnect", "",   "", disconnect_session },
1279         { "Change",     "sv", "", change_session     },
1280         { },
1281 };
1282
1283 int __connman_session_create(DBusMessage *msg)
1284 {
1285         const char *owner, *notify_path;
1286         char *session_path = NULL;
1287         DBusMessageIter iter, array;
1288         struct connman_session *session = NULL;
1289         struct session_info *info, *info_last;
1290
1291         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1292         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1293         enum connman_session_roaming_policy roaming_policy =
1294                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1295         GSList *allowed_bearers = NULL;
1296         unsigned int periodic_connect = 0;
1297         unsigned int idle_timeout = 0;
1298
1299         int err;
1300
1301         owner = dbus_message_get_sender(msg);
1302
1303         DBG("owner %s", owner);
1304
1305         if (ecall_session != NULL) {
1306                 /*
1307                  * If there is an emergency call already going on,
1308                  * ignore session creation attempt
1309                  */
1310                 err = -EBUSY;
1311                 goto err;
1312         }
1313
1314         dbus_message_iter_init(msg, &iter);
1315         dbus_message_iter_recurse(&iter, &array);
1316
1317         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1318                 DBusMessageIter entry, value;
1319                 const char *key, *val;
1320
1321                 dbus_message_iter_recurse(&array, &entry);
1322                 dbus_message_iter_get_basic(&entry, &key);
1323
1324                 dbus_message_iter_next(&entry);
1325                 dbus_message_iter_recurse(&entry, &value);
1326
1327                 switch (dbus_message_iter_get_arg_type(&value)) {
1328                 case DBUS_TYPE_ARRAY:
1329                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1330                                 allowed_bearers =
1331                                         session_parse_allowed_bearers(&value);
1332                         } else {
1333                                 return -EINVAL;
1334                         }
1335                         break;
1336                 case DBUS_TYPE_BOOLEAN:
1337                         if (g_str_equal(key, "Priority") == TRUE) {
1338                                 dbus_message_iter_get_basic(&value,
1339                                                         &priority);
1340                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1341                                 dbus_message_iter_get_basic(&value,
1342                                                         &avoid_handover);
1343                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1344                                 dbus_message_iter_get_basic(&value,
1345                                                         &stay_connected);
1346                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1347                                 dbus_message_iter_get_basic(&value,
1348                                                         &ecall);
1349                         } else {
1350                                 return -EINVAL;
1351                         }
1352                         break;
1353                 case DBUS_TYPE_UINT32:
1354                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1355                                 dbus_message_iter_get_basic(&value,
1356                                                         &periodic_connect);
1357                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1358                                 dbus_message_iter_get_basic(&value,
1359                                                         &idle_timeout);
1360                         } else {
1361                                 return -EINVAL;
1362                         }
1363                         break;
1364                 case DBUS_TYPE_STRING:
1365                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1366                                 dbus_message_iter_get_basic(&value, &val);
1367                                 roaming_policy = string2roamingpolicy(val);
1368                         } else {
1369                                 return -EINVAL;
1370                         }
1371                 }
1372                 dbus_message_iter_next(&array);
1373         }
1374
1375         dbus_message_iter_next(&iter);
1376         dbus_message_iter_get_basic(&iter, &notify_path);
1377
1378         if (notify_path == NULL) {
1379                 err = -EINVAL;
1380                 goto err;
1381         }
1382
1383         session_path = g_strdup_printf("/sessions%s", notify_path);
1384         if (session_path == NULL) {
1385                 err = -ENOMEM;
1386                 goto err;
1387         }
1388
1389         session = g_hash_table_lookup(session_hash, session_path);
1390         if (session != NULL) {
1391                 session = NULL;
1392                 err = -EEXIST;
1393                 goto err;
1394         }
1395
1396         session = g_try_new0(struct connman_session, 1);
1397         if (session == NULL) {
1398                 err = -ENOMEM;
1399                 goto err;
1400         }
1401
1402         session->info = g_try_new0(struct session_info, 1);
1403         if (session->info == NULL) {
1404                 err = -ENOMEM;
1405                 goto err;
1406         }
1407
1408         session->info_last = g_try_new0(struct session_info, 1);
1409         if (session->info_last == NULL) {
1410                 err = -ENOMEM;
1411                 goto err;
1412         }
1413
1414         info = session->info;
1415         info_last = session->info_last;
1416
1417         session->owner = g_strdup(owner);
1418         session->session_path = session_path;
1419         session->notify_path = g_strdup(notify_path);
1420         session->notify_watch =
1421                 g_dbus_add_disconnect_watch(connection, session->owner,
1422                                         owner_disconnect, session, NULL);
1423
1424         session->service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1425                                                 NULL, NULL);
1426
1427         info->online = FALSE;
1428         info->priority = priority;
1429         info->avoid_handover = avoid_handover;
1430         info->stay_connected = stay_connected;
1431         info->periodic_connect = periodic_connect;
1432         info->idle_timeout = idle_timeout;
1433         info->ecall = ecall;
1434         info->roaming_policy = roaming_policy;
1435         info->entry = NULL;
1436         info->marker = 0;
1437
1438         if (allowed_bearers == NULL) {
1439                 info->allowed_bearers =
1440                                 session_allowed_bearers_any();
1441
1442                 if (info->allowed_bearers == NULL) {
1443                         err = -ENOMEM;
1444                         goto err;
1445                 }
1446         } else {
1447                 info->allowed_bearers = allowed_bearers;
1448         }
1449
1450         g_hash_table_replace(session_hash, session->session_path, session);
1451
1452         DBG("add %s", session->session_path);
1453
1454         if (g_dbus_register_interface(connection, session->session_path,
1455                                         CONNMAN_SESSION_INTERFACE,
1456                                         session_methods, NULL,
1457                                         NULL, session, NULL) == FALSE) {
1458                 connman_error("Failed to register %s", session->session_path);
1459                 g_hash_table_remove(session_hash, session->session_path);
1460                 session = NULL;
1461
1462                 err = -EINVAL;
1463                 goto err;
1464         }
1465
1466         g_dbus_send_reply(connection, msg,
1467                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1468                                 DBUS_TYPE_INVALID);
1469
1470
1471         update_allowed_bearers(session);
1472         if (info->ecall == TRUE) {
1473                 ecall_session = session;
1474                 update_ecall_sessions(session);
1475         }
1476
1477         info_last->online = info->online;
1478         info_last->priority = info->priority;
1479         info_last->avoid_handover = info->avoid_handover;
1480         info_last->stay_connected = info->stay_connected;
1481         info_last->periodic_connect = info->periodic_connect;
1482         info_last->idle_timeout = info->idle_timeout;
1483         info_last->ecall = info->ecall;
1484         info_last->roaming_policy = info->roaming_policy;
1485         info_last->entry = info->entry;
1486         info_last->marker = info->marker;
1487         info_last->allowed_bearers = info->allowed_bearers;
1488
1489         session->info_dirty = TRUE;
1490         session->append_all = TRUE;
1491
1492         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1493
1494         return 0;
1495
1496 err:
1497         connman_error("Failed to create session");
1498
1499         if (session != NULL) {
1500                 if (session->info_last != NULL)
1501                         g_free(session->info_last);
1502                 if (session->info != NULL)
1503                         g_free(session->info);
1504                 g_free(session);
1505         }
1506
1507         g_free(session_path);
1508
1509         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1510         g_slist_free(allowed_bearers);
1511
1512         return err;
1513 }
1514
1515 int __connman_session_destroy(DBusMessage *msg)
1516 {
1517         const char *owner, *session_path;
1518         struct connman_session *session;
1519
1520         owner = dbus_message_get_sender(msg);
1521
1522         DBG("owner %s", owner);
1523
1524         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1525                                                         DBUS_TYPE_INVALID);
1526         if (session_path == NULL)
1527                 return -EINVAL;
1528
1529         session = g_hash_table_lookup(session_hash, session_path);
1530         if (session == NULL)
1531                 return -EINVAL;
1532
1533         if (g_strcmp0(owner, session->owner) != 0)
1534                 return -EACCES;
1535
1536         session_disconnect(session);
1537
1538         return 0;
1539 }
1540
1541 connman_bool_t __connman_session_mode()
1542 {
1543         return sessionmode;
1544 }
1545
1546 void __connman_session_set_mode(connman_bool_t enable)
1547 {
1548         DBG("enable %d", enable);
1549
1550         if (sessionmode == enable)
1551                 return;
1552
1553         sessionmode = enable;
1554
1555         if (sessionmode == TRUE)
1556                 __connman_service_disconnect_all();
1557 }
1558
1559 static void service_add(struct connman_service *service)
1560 {
1561         GHashTableIter iter;
1562         GSequenceIter *iter_service_list;
1563         gpointer key, value;
1564         struct connman_session *session;
1565
1566         DBG("service %p", service);
1567
1568         g_hash_table_iter_init(&iter, session_hash);
1569
1570         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1571                 session = value;
1572
1573                 if (service_match(session, service) == FALSE)
1574                         continue;
1575
1576                 iter_service_list =
1577                         g_sequence_insert_sorted(session->service_list,
1578                                                         service, sort_services,
1579                                                         session);
1580
1581                 g_hash_table_replace(session->service_hash, service,
1582                                         iter_service_list);
1583
1584                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1585         }
1586 }
1587
1588 static void service_remove(struct connman_service *service)
1589 {
1590
1591         GHashTableIter iter;
1592         gpointer key, value;
1593         struct connman_session *session;
1594         struct session_info *info;
1595
1596         DBG("service %p", service);
1597
1598         g_hash_table_iter_init(&iter, session_hash);
1599
1600         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1601                 GSequenceIter *iter;
1602                 session = value;
1603                 info = session->info;
1604
1605                 iter = g_hash_table_lookup(session->service_hash, service);
1606                 if (iter == NULL)
1607                         continue;
1608
1609                 g_sequence_remove(iter);
1610
1611                 info->entry = NULL;
1612                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1613         }
1614 }
1615
1616 static void service_state_changed(struct connman_service *service,
1617                                         enum connman_service_state state)
1618 {
1619         GHashTableIter iter;
1620         gpointer key, value;
1621         struct connman_session *session;
1622         struct session_info *info, *info_last;
1623
1624         DBG("service %p state %d", service, state);
1625
1626         g_hash_table_iter_init(&iter, session_hash);
1627
1628         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1629                 session = value;
1630                 info = session->info;
1631                 info_last = session->info_last;
1632
1633                 if (info->entry != NULL && info->entry->service == service) {
1634                         info->entry->state = state;
1635                         info->online = is_online(info->entry->state);
1636                         if (info_last->online != info->online)
1637                                 session->info_dirty = TRUE;
1638                 }
1639
1640                 session_changed(session,
1641                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1642         }
1643 }
1644
1645 static void ipconfig_changed(struct connman_service *service,
1646                                 struct connman_ipconfig *ipconfig)
1647 {
1648         GHashTableIter iter;
1649         gpointer key, value;
1650         struct connman_session *session;
1651         struct session_info *info;
1652         enum connman_ipconfig_type type;
1653
1654         DBG("service %p ipconfig %p", service, ipconfig);
1655
1656         type = __connman_ipconfig_get_config_type(ipconfig);
1657
1658         g_hash_table_iter_init(&iter, session_hash);
1659
1660         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1661                 session = value;
1662                 info = session->info;
1663
1664                 if (info->entry != NULL && info->entry->service == service) {
1665                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1666                                 ipconfig_ipv4_changed(session);
1667                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1668                                 ipconfig_ipv6_changed(session);
1669                 }
1670         }
1671 }
1672
1673 static struct connman_notifier session_notifier = {
1674         .name                   = "session",
1675         .service_add            = service_add,
1676         .service_remove         = service_remove,
1677         .service_state_changed  = service_state_changed,
1678         .ipconfig_changed       = ipconfig_changed,
1679 };
1680
1681 int __connman_session_init(void)
1682 {
1683         int err;
1684
1685         DBG("");
1686
1687         connection = connman_dbus_get_connection();
1688         if (connection == NULL)
1689                 return -1;
1690
1691         err = connman_notifier_register(&session_notifier);
1692         if (err < 0) {
1693                 dbus_connection_unref(connection);
1694                 return err;
1695         }
1696
1697         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1698                                                 NULL, cleanup_session);
1699
1700         sessionmode = FALSE;
1701         return 0;
1702 }
1703
1704 void __connman_session_cleanup(void)
1705 {
1706         DBG("");
1707
1708         if (connection == NULL)
1709                 return;
1710
1711         connman_notifier_unregister(&session_notifier);
1712
1713         g_hash_table_foreach(session_hash, release_session, NULL);
1714         g_hash_table_destroy(session_hash);
1715
1716         dbus_connection_unref(connection);
1717 }