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_DISCONNECT       = 2,
  52         CONNMAN_SESSION_REASON_FREE_RIDE        = 3,
  53         CONNMAN_SESSION_REASON_PERIODIC         = 4,
  54 };
  55
  56 enum connman_session_roaming_policy {
  57         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  58         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  59         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  60         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  61         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  62         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  63 };
  64
  65 struct service_entry {
  66         /* track why this service was selected */
  67         enum connman_session_reason reason;
  68         enum connman_service_state state;
  69         const char *name;
  70         struct connman_service *service;
  71         char *ifname;
  72         const char *bearer;
  73 };
  74
  75 struct session_info {
  76         connman_bool_t online;
  77         connman_bool_t priority;
  78         GSList *allowed_bearers;
  79         connman_bool_t avoid_handover;
  80         connman_bool_t stay_connected;
  81         unsigned int periodic_connect;
  82         unsigned int idle_timeout;
  83         connman_bool_t ecall;
  84         enum connman_session_roaming_policy roaming_policy;
  85         unsigned int marker;
  86
  87         struct service_entry *entry;
  88         enum connman_session_reason reason;
  89 };
  90
  91 struct connman_session {
  92         char *owner;
  93         char *session_path;
  94         char *notify_path;
  95         guint notify_watch;
  96
  97         connman_bool_t append_all;
  98         connman_bool_t info_dirty;
  99         struct session_info *info;
 100         struct session_info *info_last;
 101
 102         GSequence *service_list;
 103         GHashTable *service_hash;
 104 };
 105
 106 struct bearer_info {
 107         char *name;
 108         connman_bool_t match_all;
 109         enum connman_service_type service_type;
 110 };
 111
 112 static const char *trigger2string(enum connman_session_trigger trigger)
 113 {
 114         switch (trigger) {
 115         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 116                 break;
 117         case CONNMAN_SESSION_TRIGGER_SETTING:
 118                 return "setting";
 119         case CONNMAN_SESSION_TRIGGER_CONNECT:
 120                 return "connect";
 121         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 122                 return "disconnect";
 123         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 124                 return "periodic";
 125         case CONNMAN_SESSION_TRIGGER_SERVICE:
 126                 return "service";
 127         case CONNMAN_SESSION_TRIGGER_ECALL:
 128                 return "ecall";
 129         }
 130
 131         return NULL;
 132 }
 133
 134 static const char *reason2string(enum connman_session_reason reason)
 135 {
 136         switch (reason) {
 137         case CONNMAN_SESSION_REASON_UNKNOWN:
 138                 return "unknown";
 139         case CONNMAN_SESSION_REASON_CONNECT:
 140                 return "connect";
 141         case CONNMAN_SESSION_REASON_DISCONNECT:
 142                 return "disconnect";
 143         case CONNMAN_SESSION_REASON_FREE_RIDE:
 144                 return "free-ride";
 145         case CONNMAN_SESSION_REASON_PERIODIC:
 146                 return "periodic";
 147         }
 148
 149         return NULL;
 150 }
 151
 152 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 153 {
 154         switch (policy) {
 155         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 156                 return "unknown";
 157         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 158                 return "default";
 159         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 160                 return "always";
 161         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 162                 return "forbidden";
 163         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 164                 return "national";
 165         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 166                 return "international";
 167         }
 168
 169         return NULL;
 170 }
 171
 172 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 173 {
 174         if (g_strcmp0(policy, "default") == 0)
 175                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 176         else if (g_strcmp0(policy, "always") == 0)
 177                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 178         else if (g_strcmp0(policy, "forbidden") == 0)
 179                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 180         else if (g_strcmp0(policy, "national") == 0)
 181                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 182         else if (g_strcmp0(policy, "international") == 0)
 183                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 184         else
 185                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 186 }
 187
 188 static enum connman_service_type bearer2service(const char *bearer)
 189 {
 190         if (bearer == NULL)
 191                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 192
 193         if (g_strcmp0(bearer, "ethernet") == 0)
 194                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 195         else if (g_strcmp0(bearer, "wifi") == 0)
 196                 return CONNMAN_SERVICE_TYPE_WIFI;
 197         else if (g_strcmp0(bearer, "wimax") == 0)
 198                 return CONNMAN_SERVICE_TYPE_WIMAX;
 199         else if (g_strcmp0(bearer, "bluetooth") == 0)
 200                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 201         else if (g_strcmp0(bearer, "cellular") == 0)
 202                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 203         else if (g_strcmp0(bearer, "vpn") == 0)
 204                 return CONNMAN_SERVICE_TYPE_VPN;
 205         else
 206                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 207 }
 208
 209 static char *service2bearer(enum connman_service_type type)
 210 {
 211         switch (type) {
 212         case CONNMAN_SERVICE_TYPE_ETHERNET:
 213                 return "ethernet";
 214         case CONNMAN_SERVICE_TYPE_WIFI:
 215                 return "wifi";
 216         case CONNMAN_SERVICE_TYPE_WIMAX:
 217                 return "wimax";
 218         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 219                 return "bluetooth";
 220         case CONNMAN_SERVICE_TYPE_CELLULAR:
 221                 return "cellular";
 222         case CONNMAN_SERVICE_TYPE_VPN:
 223                 return "vpn";
 224         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 225         case CONNMAN_SERVICE_TYPE_SYSTEM:
 226         case CONNMAN_SERVICE_TYPE_GPS:
 227         case CONNMAN_SERVICE_TYPE_GADGET:
 228                 return "";
 229         }
 230
 231         return "";
 232 }
 233
 234 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 235 {
 236         struct bearer_info *info = data;
 237
 238         g_free(info->name);
 239         g_free(info);
 240 }
 241
 242 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 243 {
 244         struct bearer_info *info;
 245         DBusMessageIter array;
 246         GSList *list = NULL;
 247
 248         dbus_message_iter_recurse(iter, &array);
 249
 250         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 251                 char *bearer = NULL;
 252
 253                 dbus_message_iter_get_basic(&array, &bearer);
 254
 255                 info = g_try_new0(struct bearer_info, 1);
 256                 if (info == NULL) {
 257                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 258                         g_slist_free(list);
 259
 260                         return NULL;
 261                 }
 262
 263                 info->name = g_strdup(bearer);
 264                 info->service_type = bearer2service(info->name);
 265
 266                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 267                                 g_strcmp0(info->name, "*") == 0) {
 268                         info->match_all = TRUE;
 269                 } else {
 270                         info->match_all = FALSE;
 271                 }
 272
 273                 list = g_slist_append(list, info);
 274
 275                 dbus_message_iter_next(&array);
 276         }
 277
 278         return list;
 279 }
 280
 281 static GSList *session_allowed_bearers_any(void)
 282 {
 283         struct bearer_info *info;
 284         GSList *list = NULL;
 285
 286         info = g_try_new0(struct bearer_info, 1);
 287         if (info == NULL) {
 288                 g_slist_free(list);
 289
 290                 return NULL;
 291         }
 292
 293         info->name = g_strdup("");
 294         info->match_all = TRUE;
 295         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 296
 297         list = g_slist_append(list, info);
 298
 299         return list;
 300 }
 301
 302 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 303 {
 304         struct session_info *info = user_data;
 305         GSList *list;
 306
 307         for (list = info->allowed_bearers;
 308                         list != NULL; list = list->next) {
 309                 struct bearer_info *info = list->data;
 310
 311                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 312                                                 &info->name);
 313         }
 314 }
 315
 316 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 317 {
 318         struct connman_service *service = user_data;
 319         struct connman_ipconfig *ipconfig_ipv4;
 320
 321         if (service == NULL)
 322                 return;
 323
 324         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 325         if (ipconfig_ipv4 == NULL)
 326                 return;
 327
 328         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 329 }
 330
 331 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 332 {
 333         struct connman_service *service = user_data;
 334         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 335
 336         if (service == NULL)
 337                 return;
 338
 339         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 340         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 341         if (ipconfig_ipv6 == NULL)
 342                 return;
 343
 344         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 345 }
 346
 347 static void append_notify(DBusMessageIter *dict,
 348                                         struct connman_session *session)
 349 {
 350         struct session_info *info = session->info;
 351         struct session_info *info_last = session->info_last;
 352         const char *policy;
 353         struct connman_service *service;
 354         const char *name, *ifname, *bearer;
 355
 356         if (session->append_all == TRUE ||
 357                         info->online != info_last->online) {
 358                 connman_dbus_dict_append_basic(dict, "Online",
 359                                                 DBUS_TYPE_BOOLEAN,
 360                                                 &info->online);
 361                 info_last->online = info->online;
 362         }
 363
 364         if (session->append_all == TRUE ||
 365                         info->entry != info_last->entry) {
 366                 if (info->entry == NULL) {
 367                         name = "";
 368                         ifname = "";
 369                         service = NULL;
 370                         bearer = "";
 371                 } else {
 372                         name = info->entry->name;
 373                         ifname = info->entry->ifname;
 374                         service = info->entry->service;
 375                         bearer = info->entry->bearer;
 376                 }
 377
 378                 connman_dbus_dict_append_basic(dict, "Name",
 379                                                 DBUS_TYPE_STRING,
 380                                                 &name);
 381
 382                 connman_dbus_dict_append_dict(dict, "IPv4",
 383                                                 append_ipconfig_ipv4,
 384                                                 service);
 385
 386                 connman_dbus_dict_append_dict(dict, "IPv6",
 387                                                 append_ipconfig_ipv6,
 388                                                 service);
 389
 390                 connman_dbus_dict_append_basic(dict, "Interface",
 391                                                 DBUS_TYPE_STRING,
 392                                                 &ifname);
 393
 394                 connman_dbus_dict_append_basic(dict, "Bearer",
 395                                                 DBUS_TYPE_STRING,
 396                                                 &bearer);
 397
 398                 info_last->entry = info->entry;
 399         }
 400
 401
 402         if (session->append_all == TRUE ||
 403                         info->priority != info_last->priority) {
 404                 connman_dbus_dict_append_basic(dict, "Priority",
 405                                                 DBUS_TYPE_BOOLEAN,
 406                                                 &info->priority);
 407                 info_last->priority = info->priority;
 408         }
 409
 410         if (session->append_all == TRUE ||
 411                         info->allowed_bearers != info_last->allowed_bearers) {
 412                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 413                                                 DBUS_TYPE_STRING,
 414                                                 append_allowed_bearers,
 415                                                 info);
 416                 info_last->allowed_bearers = info->allowed_bearers;
 417         }
 418
 419         if (session->append_all == TRUE ||
 420                         info->avoid_handover != info_last->avoid_handover) {
 421                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 422                                                 DBUS_TYPE_BOOLEAN,
 423                                                 &info->avoid_handover);
 424                 info_last->avoid_handover = info->avoid_handover;
 425         }
 426
 427         if (session->append_all == TRUE ||
 428                         info->stay_connected != info_last->stay_connected) {
 429                 connman_dbus_dict_append_basic(dict, "StayConnected",
 430                                                 DBUS_TYPE_BOOLEAN,
 431                                                 &info->stay_connected);
 432                 info_last->stay_connected = info->stay_connected;
 433         }
 434
 435         if (session->append_all == TRUE ||
 436                         info->periodic_connect != info_last->periodic_connect) {
 437                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 438                                                 DBUS_TYPE_UINT32,
 439                                                 &info->periodic_connect);
 440                 info_last->periodic_connect = info->periodic_connect;
 441         }
 442
 443         if (session->append_all == TRUE ||
 444                         info->idle_timeout != info_last->idle_timeout) {
 445                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 446                                                 DBUS_TYPE_UINT32,
 447                                                 &info->idle_timeout);
 448                 info_last->idle_timeout = info->idle_timeout;
 449         }
 450
 451         if (session->append_all == TRUE ||
 452                         info->ecall != info_last->ecall) {
 453                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 454                                                 DBUS_TYPE_BOOLEAN,
 455                                                 &info->ecall);
 456                 info_last->ecall = info->ecall;
 457         }
 458
 459         if (session->append_all == TRUE ||
 460                         info->roaming_policy != info_last->roaming_policy) {
 461                 policy = roamingpolicy2string(info->roaming_policy);
 462                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 463                                                 DBUS_TYPE_STRING,
 464                                                 &policy);
 465                 info_last->roaming_policy = info->roaming_policy;
 466         }
 467
 468         if (session->append_all == TRUE ||
 469                         info->marker != info_last->marker) {
 470                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 471                                                 DBUS_TYPE_UINT32,
 472                                                 &info->marker);
 473                 info_last->marker = info->marker;
 474         }
 475
 476         session->append_all = FALSE;
 477         session->info_dirty = FALSE;
 478 }
 479
 480 static gboolean session_notify(gpointer user_data)
 481 {
 482         struct connman_session *session = user_data;
 483         DBusMessage *msg;
 484         DBusMessageIter array, dict;
 485
 486         if (session->info_dirty == FALSE)
 487                 return 0;
 488
 489         DBG("session %p owner %s notify_path %s", session,
 490                 session->owner, session->notify_path);
 491
 492         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 493                                                 CONNMAN_NOTIFICATION_INTERFACE,
 494                                                 "Update");
 495         if (msg == NULL)
 496                 return FALSE;
 497
 498         dbus_message_iter_init_append(msg, &array);
 499         connman_dbus_dict_open(&array, &dict);
 500
 501         append_notify(&dict, session);
 502
 503         connman_dbus_dict_close(&array, &dict);
 504
 505         g_dbus_send_message(connection, msg);
 506
 507         session->info_dirty = FALSE;
 508
 509         return FALSE;
 510 }
 511
 512 static void ipconfig_ipv4_changed(struct connman_session *session)
 513 {
 514         struct session_info *info = session->info;
 515
 516         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 517                                                 "IPv4", append_ipconfig_ipv4,
 518                                                 info->entry->service);
 519 }
 520
 521 static void ipconfig_ipv6_changed(struct connman_session *session)
 522 {
 523         struct session_info *info = session->info;
 524
 525         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 526                                                 "IPv6", append_ipconfig_ipv6,
 527                                                 info->entry->service);
 528 }
 529
 530 static connman_bool_t service_type_match(struct connman_session *session,
 531                                         struct connman_service *service)
 532 {
 533         struct session_info *info = session->info;
 534         GSList *list;
 535
 536         for (list = info->allowed_bearers;
 537                         list != NULL; list = list->next) {
 538                 struct bearer_info *info = list->data;
 539                 enum connman_service_type service_type;
 540
 541                 if (info->match_all == TRUE)
 542                         return TRUE;
 543
 544                 service_type = connman_service_get_type(service);
 545                 if (info->service_type == service_type)
 546                         return TRUE;
 547         }
 548
 549         return FALSE;
 550 }
 551
 552 static connman_bool_t service_match(struct connman_session *session,
 553                                         struct connman_service *service)
 554 {
 555         if (service_type_match(session, service) == FALSE)
 556                 return FALSE;
 557
 558         return TRUE;
 559 }
 560
 561 static int service_type_weight(enum connman_service_type type)
 562 {
 563         /*
 564          * The session doesn't care which service
 565          * to use. Nevertheless we have to sort them
 566          * according their type. The ordering is
 567          *
 568          * 1. Ethernet
 569          * 2. Bluetooth
 570          * 3. WiFi/WiMAX
 571          * 4. Cellular
 572          */
 573
 574         switch (type) {
 575         case CONNMAN_SERVICE_TYPE_ETHERNET:
 576                 return 4;
 577         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 578                 return 3;
 579         case CONNMAN_SERVICE_TYPE_WIFI:
 580         case CONNMAN_SERVICE_TYPE_WIMAX:
 581                 return 2;
 582         case CONNMAN_SERVICE_TYPE_CELLULAR:
 583                 return 1;
 584         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 585         case CONNMAN_SERVICE_TYPE_SYSTEM:
 586         case CONNMAN_SERVICE_TYPE_GPS:
 587         case CONNMAN_SERVICE_TYPE_VPN:
 588         case CONNMAN_SERVICE_TYPE_GADGET:
 589                 break;
 590         }
 591
 592         return 0;
 593 }
 594
 595 static gint sort_allowed_bearers(struct connman_service *service_a,
 596                                         struct connman_service *service_b,
 597                                         struct connman_session *session)
 598 {
 599         struct session_info *info = session->info;
 600         GSList *list;
 601         enum connman_service_type type_a, type_b;
 602         int weight_a, weight_b;
 603
 604         type_a = connman_service_get_type(service_a);
 605         type_b = connman_service_get_type(service_b);
 606
 607         for (list = info->allowed_bearers;
 608                         list != NULL; list = list->next) {
 609                 struct bearer_info *info = list->data;
 610
 611                 if (info->match_all == TRUE) {
 612                         if (type_a != type_b) {
 613                                 weight_a = service_type_weight(type_a);
 614                                 weight_b = service_type_weight(type_b);
 615
 616                                 if (weight_a > weight_b)
 617                                         return -1;
 618
 619                                 if (weight_a < weight_b)
 620                                         return 1;
 621
 622                                 return 0;
 623                         }
 624                 }
 625
 626                 if (type_a == info->service_type &&
 627                                 type_b == info->service_type) {
 628                         return 0;
 629                 }
 630
 631                 if (type_a == info->service_type &&
 632                                 type_b != info->service_type) {
 633                         return -1;
 634                 }
 635
 636                 if (type_a != info->service_type &&
 637                                 type_b == info->service_type) {
 638                         return 1;
 639                 }
 640         }
 641
 642         return 0;
 643 }
 644
 645 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 646 {
 647         struct service_entry *entry_a = (void *)a;
 648         struct service_entry *entry_b = (void *)b;
 649         struct connman_session *session = user_data;
 650
 651         return sort_allowed_bearers(entry_a->service, entry_b->service,
 652                                 session);
 653 }
 654
 655 static void cleanup_session(gpointer user_data)
 656 {
 657         struct connman_session *session = user_data;
 658         struct session_info *info = session->info;
 659
 660         DBG("remove %s", session->session_path);
 661
 662         g_hash_table_destroy(session->service_hash);
 663         g_sequence_free(session->service_list);
 664
 665         if (info->entry != NULL &&
 666                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 667                 __connman_service_disconnect(info->entry->service);
 668         }
 669
 670         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 671         g_slist_free(info->allowed_bearers);
 672
 673         g_free(session->owner);
 674         g_free(session->session_path);
 675         g_free(session->notify_path);
 676         g_free(session->info);
 677         g_free(session->info_last);
 678
 679         g_free(session);
 680 }
 681
 682 static connman_bool_t is_online(enum connman_service_state state)
 683 {
 684         switch (state) {
 685         case CONNMAN_SERVICE_STATE_UNKNOWN:
 686         case CONNMAN_SERVICE_STATE_IDLE:
 687         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 688         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 689         case CONNMAN_SERVICE_STATE_DISCONNECT:
 690         case CONNMAN_SERVICE_STATE_FAILURE:
 691         case CONNMAN_SERVICE_STATE_READY:
 692                 break;
 693         case CONNMAN_SERVICE_STATE_ONLINE:
 694                 return TRUE;
 695         }
 696
 697         return FALSE;
 698 }
 699
 700 static connman_bool_t is_connecting(enum connman_service_state state)
 701 {
 702         switch (state) {
 703         case CONNMAN_SERVICE_STATE_UNKNOWN:
 704         case CONNMAN_SERVICE_STATE_IDLE:
 705                 break;
 706         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 707         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 708         case CONNMAN_SERVICE_STATE_READY:
 709                 return TRUE;
 710         case CONNMAN_SERVICE_STATE_DISCONNECT:
 711         case CONNMAN_SERVICE_STATE_FAILURE:
 712         case CONNMAN_SERVICE_STATE_ONLINE:
 713                 break;
 714         }
 715
 716         return FALSE;
 717 }
 718
 719 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 720 {
 721         switch (reason) {
 722         case CONNMAN_SESSION_REASON_UNKNOWN:
 723         case CONNMAN_SESSION_REASON_FREE_RIDE:
 724         case CONNMAN_SESSION_REASON_DISCONNECT:
 725                 break;
 726         case CONNMAN_SESSION_REASON_CONNECT:
 727         case CONNMAN_SESSION_REASON_PERIODIC:
 728                 return TRUE;
 729         }
 730
 731         return FALSE;
 732 }
 733
 734 static connman_bool_t explicit_disconnect(struct session_info *info)
 735 {
 736         if (info->entry == NULL)
 737                 return FALSE;
 738
 739         DBG("reason %s service %p state %d",
 740                 reason2string(info->entry->reason),
 741                 info->entry->service, info->entry->state);
 742
 743         if (info->entry->reason == CONNMAN_SESSION_REASON_UNKNOWN)
 744                 return FALSE;
 745
 746         if (explicit_connect(info->entry->reason) == FALSE)
 747                 return FALSE;
 748
 749         if (__connman_service_session_dec(info->entry->service) == FALSE)
 750                 return FALSE;
 751
 752         if (ecall_info != NULL && ecall_info != info)
 753                 return FALSE;
 754
 755         return TRUE;
 756 }
 757
 758 static gboolean call_disconnect(gpointer user_data)
 759 {
 760         struct connman_service *service = user_data;
 761
 762         /*
 763          * TODO: We should mark this entry as pending work. In case
 764          * disconnect fails we just unassign this session from the
 765          * service and can't do anything later on it
 766          */
 767         DBG("disconnect service %p", service);
 768         __connman_service_disconnect(service);
 769
 770         return FALSE;
 771 }
 772
 773 static gboolean call_connect(gpointer user_data)
 774 {
 775         struct connman_service *service = user_data;
 776
 777         DBG("connect service %p", service);
 778         __connman_service_connect(service);
 779
 780         return FALSE;
 781 }
 782
 783 static void deselect_service(struct session_info *info)
 784 {
 785         struct connman_service *service;
 786         connman_bool_t disconnect, online;
 787
 788         DBG("");
 789
 790         if (info->entry == NULL)
 791                 return;
 792
 793         disconnect = explicit_disconnect(info);
 794
 795         online = is_connecting(info->entry->state) == TRUE ||
 796                         is_online(info->entry->state) == TRUE;
 797
 798         info->online = FALSE;
 799         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 800
 801         service = info->entry->service;
 802         info->entry = NULL;
 803
 804         DBG("disconnect %d online %d", disconnect, online);
 805
 806         if (disconnect == TRUE && online == TRUE)
 807                 g_timeout_add_seconds(0, call_disconnect, service);
 808 }
 809
 810 static void deselect_and_disconnect(struct connman_session *session,
 811                                         enum connman_session_reason reason)
 812 {
 813         struct session_info *info = session->info;
 814
 815         deselect_service(info);
 816
 817         info->reason = reason;
 818 }
 819
 820 static void select_online_service(struct session_info *info,
 821                                         struct service_entry *entry)
 822 {
 823         info->online = TRUE;
 824
 825         info->entry = entry;
 826         info->entry->reason = info->reason;
 827
 828         if (explicit_connect(info->reason) == FALSE)
 829                 return;
 830
 831         __connman_service_session_inc(info->entry->service);
 832 }
 833
 834 static void select_offline_service(struct session_info *info,
 835                                         struct service_entry *entry)
 836 {
 837         if (explicit_connect(info->reason) == FALSE)
 838                 return;
 839
 840         info->online = FALSE;
 841
 842         info->entry = entry;
 843         info->entry->reason = info->reason;
 844
 845         __connman_service_session_inc(info->entry->service);
 846         g_timeout_add_seconds(0, call_connect, info->entry->service);
 847 }
 848
 849 static void select_service(struct session_info *info,
 850                                 struct service_entry *entry)
 851 {
 852         DBG("service %p", entry->service);
 853
 854         if (is_online(entry->state) == TRUE)
 855                 select_online_service(info, entry);
 856         else
 857                 select_offline_service(info, entry);
 858 }
 859
 860 static void select_and_connect(struct connman_session *session,
 861                                 enum connman_session_reason reason)
 862 {
 863         struct session_info *info = session->info;
 864         struct service_entry *entry = NULL;
 865         GSequenceIter *iter;
 866
 867         DBG("session %p reason %s", session, reason2string(reason));
 868
 869         info->reason = reason;
 870
 871         iter = g_sequence_get_begin_iter(session->service_list);
 872
 873         while (g_sequence_iter_is_end(iter) == FALSE) {
 874                 entry = g_sequence_get(iter);
 875
 876                 switch (entry->state) {
 877                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 878                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 879                 case CONNMAN_SERVICE_STATE_READY:
 880                 case CONNMAN_SERVICE_STATE_ONLINE:
 881                 case CONNMAN_SERVICE_STATE_IDLE:
 882                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 883                         select_service(info, entry);
 884                         return;
 885                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 886                 case CONNMAN_SERVICE_STATE_FAILURE:
 887                         break;
 888                 }
 889
 890                 iter = g_sequence_iter_next(iter);
 891         }
 892 }
 893
 894 static struct service_entry *create_service_entry(struct connman_service *service,
 895                                         const char *name,
 896                                         enum connman_service_state state)
 897 {
 898         struct service_entry *entry;
 899         enum connman_service_type type;
 900         int idx;
 901
 902         entry = g_try_new0(struct service_entry, 1);
 903         if (entry == NULL)
 904                 return entry;
 905
 906         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 907         entry->state = state;
 908         if (name != NULL)
 909                 entry->name = name;
 910         else
 911                 entry->name = "";
 912         entry->service = service;
 913
 914         idx = __connman_service_get_index(entry->service);
 915         entry->ifname = connman_inet_ifname(idx);
 916         if (entry->ifname == NULL)
 917                 entry->ifname = g_strdup("");
 918
 919         type = connman_service_get_type(entry->service);
 920         entry->bearer = service2bearer(type);
 921
 922         return entry;
 923 }
 924
 925 static void destroy_service_entry(gpointer data)
 926 {
 927         struct service_entry *entry = data;
 928
 929         g_free(entry->ifname);
 930
 931         g_free(entry);
 932 }
 933
 934 static void update_allowed_bearers(struct connman_session *session)
 935 {
 936         struct service_entry *entry;
 937         GSequenceIter *iter;
 938
 939         if (session->service_list != NULL) {
 940                 g_hash_table_remove_all(session->service_hash);
 941                 g_sequence_free(session->service_list);
 942         }
 943
 944         session->service_list = __connman_service_get_list(session,
 945                                                         service_match,
 946                                                         create_service_entry,
 947                                                         destroy_service_entry);
 948
 949         g_sequence_sort(session->service_list, sort_services, session);
 950
 951         iter = g_sequence_get_begin_iter(session->service_list);
 952
 953         while (g_sequence_iter_is_end(iter) == FALSE) {
 954                 entry = g_sequence_get(iter);
 955
 956                 DBG("service %p type %s name %s", entry->service,
 957                         service2bearer(connman_service_get_type(entry->service)),
 958                         entry->name);
 959
 960                 g_hash_table_replace(session->service_hash,
 961                                         entry->service, iter);
 962
 963                 iter = g_sequence_iter_next(iter);
 964         }
 965
 966         session->info_dirty = TRUE;
 967 }
 968
 969 static void session_changed(struct connman_session *session,
 970                                 enum connman_session_trigger trigger)
 971 {
 972         struct session_info *info = session->info;
 973         struct session_info *info_last = session->info_last;
 974         GSequenceIter *iter;
 975
 976         /*
 977          * TODO: This only a placeholder for the 'real' algorithm to
 978          * play a bit around. So we are going to improve it step by step.
 979          */
 980
 981         DBG("session %p trigger %s reason %s", session, trigger2string(trigger),
 982                                                 reason2string(info->reason));
 983
 984         if (info->entry != NULL) {
 985                 info->online = is_online(info->entry->state);
 986                 if (info_last->online != info->online)
 987                         session->info_dirty = TRUE;
 988         }
 989
 990         switch (trigger) {
 991         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 992                 DBG("ignore session changed event");
 993                 return;
 994         case CONNMAN_SESSION_TRIGGER_SETTING:
 995                 if (info->entry != NULL) {
 996                         iter = g_hash_table_lookup(session->service_hash,
 997                                                         info->entry->service);
 998                         if (iter == NULL) {
 999                                 /*
1000                                  * This service is not part of this
1001                                  * session anymore.
1002                                  */
1003                                 deselect_and_disconnect(session, info->reason);
1004                         }
1005                 }
1006
1007                 if (info->online == FALSE) {
1008                         select_and_connect(session,
1009                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1010                 }
1011
1012                 break;
1013         case CONNMAN_SESSION_TRIGGER_CONNECT:
1014                 if (info->online == TRUE) {
1015                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
1016                                 break;
1017                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
1018                         __connman_service_session_inc(info->entry->service);
1019                         break;
1020                 }
1021
1022                 select_and_connect(session,
1023                                 CONNMAN_SESSION_REASON_CONNECT);
1024
1025                 break;
1026         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
1027                 deselect_and_disconnect(session,
1028                                         CONNMAN_SESSION_REASON_DISCONNECT);
1029
1030                 break;
1031         case CONNMAN_SESSION_TRIGGER_PERIODIC:
1032                 if (info->online == TRUE) {
1033                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
1034                         __connman_service_session_inc(info->entry->service);
1035                         break;
1036                 }
1037
1038                 select_and_connect(session,
1039                                 CONNMAN_SESSION_REASON_PERIODIC);
1040
1041                 break;
1042         case CONNMAN_SESSION_TRIGGER_SERVICE:
1043                 if (info->entry != NULL &&
1044                                 (is_connecting(info->entry->state) == TRUE ||
1045                                         is_online(info->entry->state) == TRUE)) {
1046                         break;
1047                 }
1048
1049                 deselect_and_disconnect(session, info->reason);
1050
1051                 if (info->reason == CONNMAN_SESSION_REASON_FREE_RIDE ||
1052                                 info->stay_connected == TRUE) {
1053                         select_and_connect(session, info->reason);
1054                 }
1055
1056                 break;
1057         case CONNMAN_SESSION_TRIGGER_ECALL:
1058                 if (info->online == FALSE && info->entry != NULL &&
1059                                 info->entry->service != NULL) {
1060                         deselect_and_disconnect(session, info->reason);
1061                 }
1062
1063                 break;
1064         }
1065
1066         if (info->entry != info_last->entry)
1067                 session->info_dirty = TRUE;
1068
1069         session_notify(session);
1070 }
1071
1072 static DBusMessage *connect_session(DBusConnection *conn,
1073                                         DBusMessage *msg, void *user_data)
1074 {
1075         struct connman_session *session = user_data;
1076         struct session_info *info = session->info;
1077
1078         DBG("session %p", session);
1079
1080         if (ecall_info != NULL && ecall_info != info)
1081                 return __connman_error_failed(msg, EBUSY);
1082
1083         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1084
1085         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1086 }
1087
1088 static DBusMessage *disconnect_session(DBusConnection *conn,
1089                                         DBusMessage *msg, void *user_data)
1090 {
1091         struct connman_session *session = user_data;
1092         struct session_info *info = session->info;
1093
1094         DBG("session %p", session);
1095
1096         if (ecall_info != NULL && ecall_info != info)
1097                 return __connman_error_failed(msg, EBUSY);
1098
1099         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1100
1101         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1102 }
1103
1104 static void update_ecall_sessions(struct connman_session *session)
1105 {
1106         struct session_info *info = session->info;
1107         struct connman_session *session_iter;
1108         GHashTableIter iter;
1109         gpointer key, value;
1110
1111         g_hash_table_iter_init(&iter, session_hash);
1112
1113         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1114                 session_iter = value;
1115
1116                 if (session_iter == session)
1117                         continue;
1118
1119                 session_iter->info->ecall = info->ecall;
1120                 session_iter->info_dirty = TRUE;
1121
1122                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1123         }
1124 }
1125
1126 static void update_ecall(struct connman_session *session)
1127 {
1128         struct session_info *info = session->info;
1129         struct session_info *info_last = session->info_last;
1130
1131         DBG("session %p ecall_info %p ecall %d -> %d", session,
1132                 ecall_info, info_last->ecall, info->ecall);
1133
1134         if (ecall_info == NULL) {
1135                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1136                         goto err;
1137
1138                 ecall_info = info;
1139         } else if (ecall_info == info) {
1140                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1141                         goto err;
1142
1143                 ecall_info = NULL;
1144         } else {
1145                 goto err;
1146         }
1147
1148         update_ecall_sessions(session);
1149
1150         session->info_dirty = TRUE;
1151         return;
1152
1153 err:
1154         /* not a valid transition */
1155         info->ecall = info_last->ecall;
1156 }
1157
1158 static DBusMessage *change_session(DBusConnection *conn,
1159                                         DBusMessage *msg, void *user_data)
1160 {
1161         struct connman_session *session = user_data;
1162         struct session_info *info = session->info;
1163         struct session_info *info_last = session->info_last;
1164         DBusMessageIter iter, value;
1165         const char *name;
1166         GSList *allowed_bearers;
1167
1168         DBG("session %p", session);
1169         if (dbus_message_iter_init(msg, &iter) == FALSE)
1170                 return __connman_error_invalid_arguments(msg);
1171
1172         dbus_message_iter_get_basic(&iter, &name);
1173         dbus_message_iter_next(&iter);
1174         dbus_message_iter_recurse(&iter, &value);
1175
1176         switch (dbus_message_iter_get_arg_type(&value)) {
1177         case DBUS_TYPE_ARRAY:
1178                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1179                         allowed_bearers = session_parse_allowed_bearers(&value);
1180
1181                         g_slist_foreach(info->allowed_bearers,
1182                                         cleanup_bearer_info, NULL);
1183                         g_slist_free(info->allowed_bearers);
1184
1185                         if (allowed_bearers == NULL) {
1186                                 allowed_bearers = session_allowed_bearers_any();
1187
1188                                 if (allowed_bearers == NULL)
1189                                         return __connman_error_failed(msg, ENOMEM);
1190                         }
1191
1192                         info->allowed_bearers = allowed_bearers;
1193
1194                         update_allowed_bearers(session);
1195                 } else {
1196                         goto err;
1197                 }
1198                 break;
1199         case DBUS_TYPE_BOOLEAN:
1200                 if (g_str_equal(name, "Priority") == TRUE) {
1201                         dbus_message_iter_get_basic(&value,
1202                                         &info->priority);
1203
1204                         if (info_last->priority != info->priority)
1205                                 session->info_dirty = TRUE;
1206                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1207                         dbus_message_iter_get_basic(&value,
1208                                         &info->avoid_handover);
1209
1210                         if (info_last->avoid_handover != info->avoid_handover)
1211                                 session->info_dirty = TRUE;
1212                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1213                         dbus_message_iter_get_basic(&value,
1214                                         &info->stay_connected);
1215
1216                         if (info_last->stay_connected != info->stay_connected)
1217                                 session->info_dirty = TRUE;
1218                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1219                         dbus_message_iter_get_basic(&value,
1220                                         &info->ecall);
1221
1222                         update_ecall(session);
1223                 } else {
1224                         goto err;
1225                 }
1226                 break;
1227         case DBUS_TYPE_UINT32:
1228                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1229                         dbus_message_iter_get_basic(&value,
1230                                         &info->periodic_connect);
1231
1232                         if (info_last->periodic_connect != info->periodic_connect)
1233                                 session->info_dirty = TRUE;
1234                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1235                         dbus_message_iter_get_basic(&value,
1236                                         &info->idle_timeout);
1237
1238                         if (info_last->idle_timeout != info->idle_timeout)
1239                                 session->info_dirty = TRUE;
1240                 } else {
1241                         goto err;
1242                 }
1243                 break;
1244         case DBUS_TYPE_STRING:
1245                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1246                         const char *val;
1247                         dbus_message_iter_get_basic(&value, &val);
1248                         info->roaming_policy =
1249                                         string2roamingpolicy(val);
1250
1251                         if (info_last->roaming_policy != info->roaming_policy)
1252                                 session->info_dirty = TRUE;
1253                 } else {
1254                         goto err;
1255                 }
1256                 break;
1257         default:
1258                 goto err;
1259         }
1260
1261         if (session->info_dirty == TRUE)
1262                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1263
1264         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1265
1266 err:
1267         return __connman_error_invalid_arguments(msg);
1268 }
1269
1270 static void release_session(gpointer key, gpointer value, gpointer user_data)
1271 {
1272         struct connman_session *session = value;
1273         DBusMessage *message;
1274
1275         DBG("owner %s path %s", session->owner, session->notify_path);
1276
1277         if (session->notify_watch > 0)
1278                 g_dbus_remove_watch(connection, session->notify_watch);
1279
1280         g_dbus_unregister_interface(connection, session->session_path,
1281                                                 CONNMAN_SESSION_INTERFACE);
1282
1283         message = dbus_message_new_method_call(session->owner,
1284                                                 session->notify_path,
1285                                                 CONNMAN_NOTIFICATION_INTERFACE,
1286                                                 "Release");
1287         if (message == NULL)
1288                 return;
1289
1290         dbus_message_set_no_reply(message, TRUE);
1291
1292         g_dbus_send_message(connection, message);
1293 }
1294
1295 static int session_disconnect(struct connman_session *session)
1296 {
1297         DBG("session %p, %s", session, session->owner);
1298
1299         if (session->notify_watch > 0)
1300                 g_dbus_remove_watch(connection, session->notify_watch);
1301
1302         g_dbus_unregister_interface(connection, session->session_path,
1303                                                 CONNMAN_SESSION_INTERFACE);
1304
1305         deselect_and_disconnect(session,
1306                                 CONNMAN_SESSION_REASON_DISCONNECT);
1307
1308         g_hash_table_remove(session_hash, session->session_path);
1309
1310         return 0;
1311 }
1312
1313 static void owner_disconnect(DBusConnection *conn, void *user_data)
1314 {
1315         struct connman_session *session = user_data;
1316
1317         DBG("session %p, %s died", session, session->owner);
1318
1319         session_disconnect(session);
1320 }
1321
1322 static DBusMessage *destroy_session(DBusConnection *conn,
1323                                         DBusMessage *msg, void *user_data)
1324 {
1325         struct connman_session *session = user_data;
1326
1327         DBG("session %p", session);
1328
1329         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1330 }
1331
1332 static GDBusMethodTable session_methods[] = {
1333         { "Destroy",    "",   "", destroy_session    },
1334         { "Connect",    "",   "", connect_session    },
1335         { "Disconnect", "",   "", disconnect_session },
1336         { "Change",     "sv", "", change_session     },
1337         { },
1338 };
1339
1340 int __connman_session_create(DBusMessage *msg)
1341 {
1342         const char *owner, *notify_path;
1343         char *session_path = NULL;
1344         DBusMessageIter iter, array;
1345         struct connman_session *session = NULL;
1346         struct session_info *info, *info_last;
1347
1348         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1349         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1350         enum connman_session_roaming_policy roaming_policy =
1351                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1352         GSList *allowed_bearers = NULL;
1353         unsigned int periodic_connect = 0;
1354         unsigned int idle_timeout = 0;
1355
1356         int err;
1357
1358         owner = dbus_message_get_sender(msg);
1359
1360         DBG("owner %s", owner);
1361
1362         if (ecall_info != NULL) {
1363                 /*
1364                  * If there is an emergency call already going on,
1365                  * ignore session creation attempt
1366                  */
1367                 err = -EBUSY;
1368                 goto err;
1369         }
1370
1371         dbus_message_iter_init(msg, &iter);
1372         dbus_message_iter_recurse(&iter, &array);
1373
1374         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1375                 DBusMessageIter entry, value;
1376                 const char *key, *val;
1377
1378                 dbus_message_iter_recurse(&array, &entry);
1379                 dbus_message_iter_get_basic(&entry, &key);
1380
1381                 dbus_message_iter_next(&entry);
1382                 dbus_message_iter_recurse(&entry, &value);
1383
1384                 switch (dbus_message_iter_get_arg_type(&value)) {
1385                 case DBUS_TYPE_ARRAY:
1386                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1387                                 allowed_bearers =
1388                                         session_parse_allowed_bearers(&value);
1389                         } else {
1390                                 return -EINVAL;
1391                         }
1392                         break;
1393                 case DBUS_TYPE_BOOLEAN:
1394                         if (g_str_equal(key, "Priority") == TRUE) {
1395                                 dbus_message_iter_get_basic(&value,
1396                                                         &priority);
1397                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1398                                 dbus_message_iter_get_basic(&value,
1399                                                         &avoid_handover);
1400                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1401                                 dbus_message_iter_get_basic(&value,
1402                                                         &stay_connected);
1403                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1404                                 dbus_message_iter_get_basic(&value,
1405                                                         &ecall);
1406                         } else {
1407                                 return -EINVAL;
1408                         }
1409                         break;
1410                 case DBUS_TYPE_UINT32:
1411                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1412                                 dbus_message_iter_get_basic(&value,
1413                                                         &periodic_connect);
1414                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1415                                 dbus_message_iter_get_basic(&value,
1416                                                         &idle_timeout);
1417                         } else {
1418                                 return -EINVAL;
1419                         }
1420                         break;
1421                 case DBUS_TYPE_STRING:
1422                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1423                                 dbus_message_iter_get_basic(&value, &val);
1424                                 roaming_policy = string2roamingpolicy(val);
1425                         } else {
1426                                 return -EINVAL;
1427                         }
1428                 }
1429                 dbus_message_iter_next(&array);
1430         }
1431
1432         dbus_message_iter_next(&iter);
1433         dbus_message_iter_get_basic(&iter, &notify_path);
1434
1435         if (notify_path == NULL) {
1436                 err = -EINVAL;
1437                 goto err;
1438         }
1439
1440         session_path = g_strdup_printf("/sessions%s", notify_path);
1441         if (session_path == NULL) {
1442                 err = -ENOMEM;
1443                 goto err;
1444         }
1445
1446         session = g_hash_table_lookup(session_hash, session_path);
1447         if (session != NULL) {
1448                 session = NULL;
1449                 err = -EEXIST;
1450                 goto err;
1451         }
1452
1453         session = g_try_new0(struct connman_session, 1);
1454         if (session == NULL) {
1455                 err = -ENOMEM;
1456                 goto err;
1457         }
1458
1459         session->info = g_try_new0(struct session_info, 1);
1460         if (session->info == NULL) {
1461                 err = -ENOMEM;
1462                 goto err;
1463         }
1464
1465         session->info_last = g_try_new0(struct session_info, 1);
1466         if (session->info_last == NULL) {
1467                 err = -ENOMEM;
1468                 goto err;
1469         }
1470
1471         info = session->info;
1472         info_last = session->info_last;
1473
1474         session->owner = g_strdup(owner);
1475         session->session_path = session_path;
1476         session->notify_path = g_strdup(notify_path);
1477         session->notify_watch =
1478                 g_dbus_add_disconnect_watch(connection, session->owner,
1479                                         owner_disconnect, session, NULL);
1480
1481         session->service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1482                                                 NULL, NULL);
1483
1484         info->online = FALSE;
1485         info->priority = priority;
1486         info->avoid_handover = avoid_handover;
1487         info->stay_connected = stay_connected;
1488         info->periodic_connect = periodic_connect;
1489         info->idle_timeout = idle_timeout;
1490         info->ecall = ecall;
1491         info->roaming_policy = roaming_policy;
1492         info->entry = NULL;
1493         info->marker = 0;
1494
1495         if (allowed_bearers == NULL) {
1496                 info->allowed_bearers =
1497                                 session_allowed_bearers_any();
1498
1499                 if (info->allowed_bearers == NULL) {
1500                         err = -ENOMEM;
1501                         goto err;
1502                 }
1503         } else {
1504                 info->allowed_bearers = allowed_bearers;
1505         }
1506
1507         g_hash_table_replace(session_hash, session->session_path, session);
1508
1509         DBG("add %s", session->session_path);
1510
1511         if (g_dbus_register_interface(connection, session->session_path,
1512                                         CONNMAN_SESSION_INTERFACE,
1513                                         session_methods, NULL,
1514                                         NULL, session, NULL) == FALSE) {
1515                 connman_error("Failed to register %s", session->session_path);
1516                 g_hash_table_remove(session_hash, session->session_path);
1517                 session = NULL;
1518
1519                 err = -EINVAL;
1520                 goto err;
1521         }
1522
1523         g_dbus_send_reply(connection, msg,
1524                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1525                                 DBUS_TYPE_INVALID);
1526
1527
1528         update_allowed_bearers(session);
1529         if (info->ecall == TRUE) {
1530                 ecall_info = info;
1531                 update_ecall_sessions(session);
1532         }
1533
1534         info_last->online = info->online;
1535         info_last->priority = info->priority;
1536         info_last->avoid_handover = info->avoid_handover;
1537         info_last->stay_connected = info->stay_connected;
1538         info_last->periodic_connect = info->periodic_connect;
1539         info_last->idle_timeout = info->idle_timeout;
1540         info_last->ecall = info->ecall;
1541         info_last->roaming_policy = info->roaming_policy;
1542         info_last->entry = info->entry;
1543         info_last->marker = info->marker;
1544         info_last->allowed_bearers = info->allowed_bearers;
1545
1546         session->info_dirty = TRUE;
1547         session->append_all = TRUE;
1548
1549         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1550
1551         return 0;
1552
1553 err:
1554         connman_error("Failed to create session");
1555
1556         if (session != NULL) {
1557                 if (session->info_last != NULL)
1558                         g_free(session->info_last);
1559                 if (session->info != NULL)
1560                         g_free(session->info);
1561                 g_free(session);
1562         }
1563
1564         g_free(session_path);
1565
1566         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1567         g_slist_free(allowed_bearers);
1568
1569         return err;
1570 }
1571
1572 int __connman_session_destroy(DBusMessage *msg)
1573 {
1574         const char *owner, *session_path;
1575         struct connman_session *session;
1576
1577         owner = dbus_message_get_sender(msg);
1578
1579         DBG("owner %s", owner);
1580
1581         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1582                                                         DBUS_TYPE_INVALID);
1583         if (session_path == NULL)
1584                 return -EINVAL;
1585
1586         session = g_hash_table_lookup(session_hash, session_path);
1587         if (session == NULL)
1588                 return -EINVAL;
1589
1590         if (g_strcmp0(owner, session->owner) != 0)
1591                 return -EACCES;
1592
1593         session_disconnect(session);
1594
1595         return 0;
1596 }
1597
1598 connman_bool_t __connman_session_mode()
1599 {
1600         return sessionmode;
1601 }
1602
1603 void __connman_session_set_mode(connman_bool_t enable)
1604 {
1605         DBG("enable %d", enable);
1606
1607         sessionmode = enable;
1608
1609         if (sessionmode == TRUE)
1610                 __connman_service_disconnect_all();
1611 }
1612
1613 static void service_add(struct connman_service *service,
1614                         const char *name)
1615 {
1616         GHashTableIter iter;
1617         GSequenceIter *iter_service_list;
1618         gpointer key, value;
1619         struct connman_session *session;
1620         struct service_entry *entry;
1621
1622         DBG("service %p", service);
1623
1624         g_hash_table_iter_init(&iter, session_hash);
1625
1626         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1627                 session = value;
1628
1629                 if (service_match(session, service) == FALSE)
1630                         continue;
1631
1632                 entry = create_service_entry(service, name,
1633                                                 CONNMAN_SERVICE_STATE_IDLE);
1634                 if (entry == NULL)
1635                         continue;
1636
1637                 iter_service_list =
1638                         g_sequence_insert_sorted(session->service_list,
1639                                                         entry, sort_services,
1640                                                         session);
1641
1642                 g_hash_table_replace(session->service_hash, service,
1643                                         iter_service_list);
1644
1645                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1646         }
1647 }
1648
1649 static void service_remove(struct connman_service *service)
1650 {
1651
1652         GHashTableIter iter;
1653         gpointer key, value;
1654         struct connman_session *session;
1655         struct session_info *info;
1656
1657         DBG("service %p", service);
1658
1659         g_hash_table_iter_init(&iter, session_hash);
1660
1661         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1662                 GSequenceIter *iter;
1663                 session = value;
1664                 info = session->info;
1665
1666                 iter = g_hash_table_lookup(session->service_hash, service);
1667                 if (iter == NULL)
1668                         continue;
1669
1670                 g_sequence_remove(iter);
1671
1672                 if (info->entry != NULL && info->entry->service == service)
1673                         info->entry = NULL;
1674                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1675         }
1676 }
1677
1678 static void service_state_changed(struct connman_service *service,
1679                                         enum connman_service_state state)
1680 {
1681         GHashTableIter iter;
1682         gpointer key, value;
1683
1684         DBG("service %p state %d", service, state);
1685
1686         g_hash_table_iter_init(&iter, session_hash);
1687
1688         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1689                 struct connman_session *session = value;
1690                 GSequenceIter *service_iter;
1691
1692                 service_iter = g_hash_table_lookup(session->service_hash, service);
1693                 if (service_iter != NULL) {
1694                         struct service_entry *entry;
1695
1696                         entry = g_sequence_get(service_iter);
1697                         entry->state = state;
1698                 }
1699
1700                 session_changed(session,
1701                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1702         }
1703 }
1704
1705 static void ipconfig_changed(struct connman_service *service,
1706                                 struct connman_ipconfig *ipconfig)
1707 {
1708         GHashTableIter iter;
1709         gpointer key, value;
1710         struct connman_session *session;
1711         struct session_info *info;
1712         enum connman_ipconfig_type type;
1713
1714         DBG("service %p ipconfig %p", service, ipconfig);
1715
1716         type = __connman_ipconfig_get_config_type(ipconfig);
1717
1718         g_hash_table_iter_init(&iter, session_hash);
1719
1720         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1721                 session = value;
1722                 info = session->info;
1723
1724                 if (info->entry != NULL && info->entry->service == service) {
1725                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1726                                 ipconfig_ipv4_changed(session);
1727                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1728                                 ipconfig_ipv6_changed(session);
1729                 }
1730         }
1731 }
1732
1733 static struct connman_notifier session_notifier = {
1734         .name                   = "session",
1735         .service_add            = service_add,
1736         .service_remove         = service_remove,
1737         .service_state_changed  = service_state_changed,
1738         .ipconfig_changed       = ipconfig_changed,
1739 };
1740
1741 int __connman_session_init(void)
1742 {
1743         int err;
1744
1745         DBG("");
1746
1747         connection = connman_dbus_get_connection();
1748         if (connection == NULL)
1749                 return -1;
1750
1751         err = connman_notifier_register(&session_notifier);
1752         if (err < 0) {
1753                 dbus_connection_unref(connection);
1754                 return err;
1755         }
1756
1757         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1758                                                 NULL, cleanup_session);
1759
1760         sessionmode = FALSE;
1761         return 0;
1762 }
1763
1764 void __connman_session_cleanup(void)
1765 {
1766         DBG("");
1767
1768         if (connection == NULL)
1769                 return;
1770
1771         connman_notifier_unregister(&session_notifier);
1772
1773         g_hash_table_foreach(session_hash, release_session, NULL);
1774         g_hash_table_destroy(session_hash);
1775         session_hash = NULL;
1776
1777         dbus_connection_unref(connection);
1778 }