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 populate_service_list(struct connman_session *session)
 935 {
 936         struct service_entry *entry;
 937         GSequenceIter *iter;
 938
 939         session->service_hash =
 940                 g_hash_table_new_full(g_direct_hash, g_direct_equal,
 941                                         NULL, NULL);
 942         session->service_list = __connman_service_get_list(session,
 943                                                         service_match,
 944                                                         create_service_entry,
 945                                                         destroy_service_entry);
 946
 947         g_sequence_sort(session->service_list, sort_services, session);
 948
 949         iter = g_sequence_get_begin_iter(session->service_list);
 950
 951         while (g_sequence_iter_is_end(iter) == FALSE) {
 952                 entry = g_sequence_get(iter);
 953
 954                 DBG("service %p type %s name %s", entry->service,
 955                         service2bearer(connman_service_get_type(entry->service)),
 956                         entry->name);
 957
 958                 g_hash_table_replace(session->service_hash,
 959                                         entry->service, iter);
 960
 961                 iter = g_sequence_iter_next(iter);
 962         }
 963 }
 964
 965 static void session_changed(struct connman_session *session,
 966                                 enum connman_session_trigger trigger)
 967 {
 968         struct session_info *info = session->info;
 969         struct session_info *info_last = session->info_last;
 970         GSequenceIter *service_iter = NULL, *service_iter_last = NULL;
 971         GSequence *service_list_last;
 972         GHashTable *service_hash_last;
 973
 974         /*
 975          * TODO: This only a placeholder for the 'real' algorithm to
 976          * play a bit around. So we are going to improve it step by step.
 977          */
 978
 979         DBG("session %p trigger %s reason %s", session, trigger2string(trigger),
 980                                                 reason2string(info->reason));
 981
 982         if (info->entry != NULL) {
 983                 info->online = is_online(info->entry->state);
 984                 if (info_last->online != info->online)
 985                         session->info_dirty = TRUE;
 986         }
 987
 988         switch (trigger) {
 989         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 990                 DBG("ignore session changed event");
 991                 return;
 992         case CONNMAN_SESSION_TRIGGER_SETTING:
 993                 if (info->allowed_bearers != info_last->allowed_bearers) {
 994
 995                         service_hash_last = session->service_hash;
 996                         service_list_last = session->service_list;
 997
 998                         populate_service_list(session);
 999
1000                         if (info->entry != NULL) {
1001                                 service_iter_last = g_hash_table_lookup(
1002                                                         service_hash_last,
1003                                                         info->entry->service);
1004                                 service_iter = g_hash_table_lookup(
1005                                                         session->service_hash,
1006                                                         info->entry->service);
1007                         }
1008
1009                         if (service_iter == NULL && service_iter_last != NULL) {
1010                                 /*
1011                                  * The currently selected service is
1012                                  * not part of this session anymore.
1013                                  */
1014                                 deselect_and_disconnect(session, info->reason);
1015                         }
1016
1017                         g_hash_table_remove_all(service_hash_last);
1018                         g_sequence_free(service_list_last);
1019                 }
1020
1021                 if (info->online == FALSE) {
1022                         select_and_connect(session,
1023                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1024                 }
1025
1026                 break;
1027         case CONNMAN_SESSION_TRIGGER_CONNECT:
1028                 if (info->online == TRUE) {
1029                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
1030                                 break;
1031                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
1032                         __connman_service_session_inc(info->entry->service);
1033                         break;
1034                 }
1035
1036                 select_and_connect(session,
1037                                 CONNMAN_SESSION_REASON_CONNECT);
1038
1039                 break;
1040         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
1041                 deselect_and_disconnect(session,
1042                                         CONNMAN_SESSION_REASON_DISCONNECT);
1043
1044                 break;
1045         case CONNMAN_SESSION_TRIGGER_PERIODIC:
1046                 if (info->online == TRUE) {
1047                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
1048                         __connman_service_session_inc(info->entry->service);
1049                         break;
1050                 }
1051
1052                 select_and_connect(session,
1053                                 CONNMAN_SESSION_REASON_PERIODIC);
1054
1055                 break;
1056         case CONNMAN_SESSION_TRIGGER_SERVICE:
1057                 if (info->entry != NULL &&
1058                                 (is_connecting(info->entry->state) == TRUE ||
1059                                         is_online(info->entry->state) == TRUE)) {
1060                         break;
1061                 }
1062
1063                 deselect_and_disconnect(session, info->reason);
1064
1065                 if (info->reason == CONNMAN_SESSION_REASON_FREE_RIDE ||
1066                                 info->stay_connected == TRUE) {
1067                         select_and_connect(session, info->reason);
1068                 }
1069
1070                 break;
1071         case CONNMAN_SESSION_TRIGGER_ECALL:
1072                 if (info->online == FALSE && info->entry != NULL &&
1073                                 info->entry->service != NULL) {
1074                         deselect_and_disconnect(session, info->reason);
1075                 }
1076
1077                 break;
1078         }
1079
1080         if (info->entry != info_last->entry)
1081                 session->info_dirty = TRUE;
1082
1083         session_notify(session);
1084 }
1085
1086 static DBusMessage *connect_session(DBusConnection *conn,
1087                                         DBusMessage *msg, void *user_data)
1088 {
1089         struct connman_session *session = user_data;
1090         struct session_info *info = session->info;
1091
1092         DBG("session %p", session);
1093
1094         if (ecall_info != NULL && ecall_info != info)
1095                 return __connman_error_failed(msg, EBUSY);
1096
1097         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1098
1099         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1100 }
1101
1102 static DBusMessage *disconnect_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
1108         DBG("session %p", session);
1109
1110         if (ecall_info != NULL && ecall_info != info)
1111                 return __connman_error_failed(msg, EBUSY);
1112
1113         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1114
1115         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1116 }
1117
1118 static void update_ecall_sessions(struct connman_session *session)
1119 {
1120         struct session_info *info = session->info;
1121         struct connman_session *session_iter;
1122         GHashTableIter iter;
1123         gpointer key, value;
1124
1125         g_hash_table_iter_init(&iter, session_hash);
1126
1127         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1128                 session_iter = value;
1129
1130                 if (session_iter == session)
1131                         continue;
1132
1133                 session_iter->info->ecall = info->ecall;
1134                 session_iter->info_dirty = TRUE;
1135
1136                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1137         }
1138 }
1139
1140 static void update_ecall(struct connman_session *session)
1141 {
1142         struct session_info *info = session->info;
1143         struct session_info *info_last = session->info_last;
1144
1145         DBG("session %p ecall_info %p ecall %d -> %d", session,
1146                 ecall_info, info_last->ecall, info->ecall);
1147
1148         if (ecall_info == NULL) {
1149                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1150                         goto err;
1151
1152                 ecall_info = info;
1153         } else if (ecall_info == info) {
1154                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1155                         goto err;
1156
1157                 ecall_info = NULL;
1158         } else {
1159                 goto err;
1160         }
1161
1162         update_ecall_sessions(session);
1163
1164         session->info_dirty = TRUE;
1165         return;
1166
1167 err:
1168         /* not a valid transition */
1169         info->ecall = info_last->ecall;
1170 }
1171
1172 static DBusMessage *change_session(DBusConnection *conn,
1173                                         DBusMessage *msg, void *user_data)
1174 {
1175         struct connman_session *session = user_data;
1176         struct session_info *info = session->info;
1177         struct session_info *info_last = session->info_last;
1178         DBusMessageIter iter, value;
1179         const char *name;
1180         GSList *allowed_bearers;
1181
1182         DBG("session %p", session);
1183         if (dbus_message_iter_init(msg, &iter) == FALSE)
1184                 return __connman_error_invalid_arguments(msg);
1185
1186         dbus_message_iter_get_basic(&iter, &name);
1187         dbus_message_iter_next(&iter);
1188         dbus_message_iter_recurse(&iter, &value);
1189
1190         switch (dbus_message_iter_get_arg_type(&value)) {
1191         case DBUS_TYPE_ARRAY:
1192                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1193                         allowed_bearers = session_parse_allowed_bearers(&value);
1194
1195                         g_slist_foreach(info->allowed_bearers,
1196                                         cleanup_bearer_info, NULL);
1197                         g_slist_free(info->allowed_bearers);
1198
1199                         if (allowed_bearers == NULL) {
1200                                 allowed_bearers = session_allowed_bearers_any();
1201
1202                                 if (allowed_bearers == NULL)
1203                                         return __connman_error_failed(msg, ENOMEM);
1204                         }
1205
1206                         info->allowed_bearers = allowed_bearers;
1207
1208                         session->info_dirty = TRUE;
1209                 } else {
1210                         goto err;
1211                 }
1212                 break;
1213         case DBUS_TYPE_BOOLEAN:
1214                 if (g_str_equal(name, "Priority") == TRUE) {
1215                         dbus_message_iter_get_basic(&value,
1216                                         &info->priority);
1217
1218                         if (info_last->priority != info->priority)
1219                                 session->info_dirty = TRUE;
1220                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1221                         dbus_message_iter_get_basic(&value,
1222                                         &info->avoid_handover);
1223
1224                         if (info_last->avoid_handover != info->avoid_handover)
1225                                 session->info_dirty = TRUE;
1226                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1227                         dbus_message_iter_get_basic(&value,
1228                                         &info->stay_connected);
1229
1230                         if (info_last->stay_connected != info->stay_connected)
1231                                 session->info_dirty = TRUE;
1232                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1233                         dbus_message_iter_get_basic(&value,
1234                                         &info->ecall);
1235
1236                         update_ecall(session);
1237                 } else {
1238                         goto err;
1239                 }
1240                 break;
1241         case DBUS_TYPE_UINT32:
1242                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1243                         dbus_message_iter_get_basic(&value,
1244                                         &info->periodic_connect);
1245
1246                         if (info_last->periodic_connect != info->periodic_connect)
1247                                 session->info_dirty = TRUE;
1248                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1249                         dbus_message_iter_get_basic(&value,
1250                                         &info->idle_timeout);
1251
1252                         if (info_last->idle_timeout != info->idle_timeout)
1253                                 session->info_dirty = TRUE;
1254                 } else {
1255                         goto err;
1256                 }
1257                 break;
1258         case DBUS_TYPE_STRING:
1259                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1260                         const char *val;
1261                         dbus_message_iter_get_basic(&value, &val);
1262                         info->roaming_policy =
1263                                         string2roamingpolicy(val);
1264
1265                         if (info_last->roaming_policy != info->roaming_policy)
1266                                 session->info_dirty = TRUE;
1267                 } else {
1268                         goto err;
1269                 }
1270                 break;
1271         default:
1272                 goto err;
1273         }
1274
1275         if (session->info_dirty == TRUE)
1276                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1277
1278         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1279
1280 err:
1281         return __connman_error_invalid_arguments(msg);
1282 }
1283
1284 static void release_session(gpointer key, gpointer value, gpointer user_data)
1285 {
1286         struct connman_session *session = value;
1287         DBusMessage *message;
1288
1289         DBG("owner %s path %s", session->owner, session->notify_path);
1290
1291         if (session->notify_watch > 0)
1292                 g_dbus_remove_watch(connection, session->notify_watch);
1293
1294         g_dbus_unregister_interface(connection, session->session_path,
1295                                                 CONNMAN_SESSION_INTERFACE);
1296
1297         message = dbus_message_new_method_call(session->owner,
1298                                                 session->notify_path,
1299                                                 CONNMAN_NOTIFICATION_INTERFACE,
1300                                                 "Release");
1301         if (message == NULL)
1302                 return;
1303
1304         dbus_message_set_no_reply(message, TRUE);
1305
1306         g_dbus_send_message(connection, message);
1307 }
1308
1309 static int session_disconnect(struct connman_session *session)
1310 {
1311         DBG("session %p, %s", session, session->owner);
1312
1313         if (session->notify_watch > 0)
1314                 g_dbus_remove_watch(connection, session->notify_watch);
1315
1316         g_dbus_unregister_interface(connection, session->session_path,
1317                                                 CONNMAN_SESSION_INTERFACE);
1318
1319         deselect_and_disconnect(session,
1320                                 CONNMAN_SESSION_REASON_DISCONNECT);
1321
1322         g_hash_table_remove(session_hash, session->session_path);
1323
1324         return 0;
1325 }
1326
1327 static void owner_disconnect(DBusConnection *conn, void *user_data)
1328 {
1329         struct connman_session *session = user_data;
1330
1331         DBG("session %p, %s died", session, session->owner);
1332
1333         session_disconnect(session);
1334 }
1335
1336 static DBusMessage *destroy_session(DBusConnection *conn,
1337                                         DBusMessage *msg, void *user_data)
1338 {
1339         struct connman_session *session = user_data;
1340
1341         DBG("session %p", session);
1342
1343         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1344 }
1345
1346 static GDBusMethodTable session_methods[] = {
1347         { "Destroy",    "",   "", destroy_session    },
1348         { "Connect",    "",   "", connect_session    },
1349         { "Disconnect", "",   "", disconnect_session },
1350         { "Change",     "sv", "", change_session     },
1351         { },
1352 };
1353
1354 int __connman_session_create(DBusMessage *msg)
1355 {
1356         const char *owner, *notify_path;
1357         char *session_path = NULL;
1358         DBusMessageIter iter, array;
1359         struct connman_session *session = NULL;
1360         struct session_info *info, *info_last;
1361
1362         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1363         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1364         enum connman_session_roaming_policy roaming_policy =
1365                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1366         GSList *allowed_bearers = NULL;
1367         unsigned int periodic_connect = 0;
1368         unsigned int idle_timeout = 0;
1369
1370         int err;
1371
1372         owner = dbus_message_get_sender(msg);
1373
1374         DBG("owner %s", owner);
1375
1376         if (ecall_info != NULL) {
1377                 /*
1378                  * If there is an emergency call already going on,
1379                  * ignore session creation attempt
1380                  */
1381                 err = -EBUSY;
1382                 goto err;
1383         }
1384
1385         dbus_message_iter_init(msg, &iter);
1386         dbus_message_iter_recurse(&iter, &array);
1387
1388         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1389                 DBusMessageIter entry, value;
1390                 const char *key, *val;
1391
1392                 dbus_message_iter_recurse(&array, &entry);
1393                 dbus_message_iter_get_basic(&entry, &key);
1394
1395                 dbus_message_iter_next(&entry);
1396                 dbus_message_iter_recurse(&entry, &value);
1397
1398                 switch (dbus_message_iter_get_arg_type(&value)) {
1399                 case DBUS_TYPE_ARRAY:
1400                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1401                                 allowed_bearers =
1402                                         session_parse_allowed_bearers(&value);
1403                         } else {
1404                                 return -EINVAL;
1405                         }
1406                         break;
1407                 case DBUS_TYPE_BOOLEAN:
1408                         if (g_str_equal(key, "Priority") == TRUE) {
1409                                 dbus_message_iter_get_basic(&value,
1410                                                         &priority);
1411                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1412                                 dbus_message_iter_get_basic(&value,
1413                                                         &avoid_handover);
1414                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1415                                 dbus_message_iter_get_basic(&value,
1416                                                         &stay_connected);
1417                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1418                                 dbus_message_iter_get_basic(&value,
1419                                                         &ecall);
1420                         } else {
1421                                 return -EINVAL;
1422                         }
1423                         break;
1424                 case DBUS_TYPE_UINT32:
1425                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1426                                 dbus_message_iter_get_basic(&value,
1427                                                         &periodic_connect);
1428                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1429                                 dbus_message_iter_get_basic(&value,
1430                                                         &idle_timeout);
1431                         } else {
1432                                 return -EINVAL;
1433                         }
1434                         break;
1435                 case DBUS_TYPE_STRING:
1436                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1437                                 dbus_message_iter_get_basic(&value, &val);
1438                                 roaming_policy = string2roamingpolicy(val);
1439                         } else {
1440                                 return -EINVAL;
1441                         }
1442                 }
1443                 dbus_message_iter_next(&array);
1444         }
1445
1446         dbus_message_iter_next(&iter);
1447         dbus_message_iter_get_basic(&iter, &notify_path);
1448
1449         if (notify_path == NULL) {
1450                 err = -EINVAL;
1451                 goto err;
1452         }
1453
1454         session_path = g_strdup_printf("/sessions%s", notify_path);
1455         if (session_path == NULL) {
1456                 err = -ENOMEM;
1457                 goto err;
1458         }
1459
1460         session = g_hash_table_lookup(session_hash, session_path);
1461         if (session != NULL) {
1462                 session = NULL;
1463                 err = -EEXIST;
1464                 goto err;
1465         }
1466
1467         session = g_try_new0(struct connman_session, 1);
1468         if (session == NULL) {
1469                 err = -ENOMEM;
1470                 goto err;
1471         }
1472
1473         session->info = g_try_new0(struct session_info, 1);
1474         if (session->info == NULL) {
1475                 err = -ENOMEM;
1476                 goto err;
1477         }
1478
1479         session->info_last = g_try_new0(struct session_info, 1);
1480         if (session->info_last == NULL) {
1481                 err = -ENOMEM;
1482                 goto err;
1483         }
1484
1485         info = session->info;
1486         info_last = session->info_last;
1487
1488         session->owner = g_strdup(owner);
1489         session->session_path = session_path;
1490         session->notify_path = g_strdup(notify_path);
1491         session->notify_watch =
1492                 g_dbus_add_disconnect_watch(connection, session->owner,
1493                                         owner_disconnect, session, NULL);
1494
1495         info->online = FALSE;
1496         info->priority = priority;
1497         info->avoid_handover = avoid_handover;
1498         info->stay_connected = stay_connected;
1499         info->periodic_connect = periodic_connect;
1500         info->idle_timeout = idle_timeout;
1501         info->ecall = ecall;
1502         info->roaming_policy = roaming_policy;
1503         info->entry = NULL;
1504         info->marker = 0;
1505
1506         if (allowed_bearers == NULL) {
1507                 info->allowed_bearers =
1508                                 session_allowed_bearers_any();
1509
1510                 if (info->allowed_bearers == NULL) {
1511                         err = -ENOMEM;
1512                         goto err;
1513                 }
1514         } else {
1515                 info->allowed_bearers = allowed_bearers;
1516         }
1517
1518         g_hash_table_replace(session_hash, session->session_path, session);
1519
1520         DBG("add %s", session->session_path);
1521
1522         if (g_dbus_register_interface(connection, session->session_path,
1523                                         CONNMAN_SESSION_INTERFACE,
1524                                         session_methods, NULL,
1525                                         NULL, session, NULL) == FALSE) {
1526                 connman_error("Failed to register %s", session->session_path);
1527                 g_hash_table_remove(session_hash, session->session_path);
1528                 session = NULL;
1529
1530                 err = -EINVAL;
1531                 goto err;
1532         }
1533
1534         g_dbus_send_reply(connection, msg,
1535                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1536                                 DBUS_TYPE_INVALID);
1537
1538
1539         populate_service_list(session);
1540         if (info->ecall == TRUE) {
1541                 ecall_info = info;
1542                 update_ecall_sessions(session);
1543         }
1544
1545         info_last->online = info->online;
1546         info_last->priority = info->priority;
1547         info_last->avoid_handover = info->avoid_handover;
1548         info_last->stay_connected = info->stay_connected;
1549         info_last->periodic_connect = info->periodic_connect;
1550         info_last->idle_timeout = info->idle_timeout;
1551         info_last->ecall = info->ecall;
1552         info_last->roaming_policy = info->roaming_policy;
1553         info_last->entry = info->entry;
1554         info_last->marker = info->marker;
1555         info_last->allowed_bearers = info->allowed_bearers;
1556
1557         session->info_dirty = TRUE;
1558         session->append_all = TRUE;
1559
1560         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1561
1562         return 0;
1563
1564 err:
1565         connman_error("Failed to create session");
1566
1567         if (session != NULL) {
1568                 if (session->info_last != NULL)
1569                         g_free(session->info_last);
1570                 if (session->info != NULL)
1571                         g_free(session->info);
1572                 g_free(session);
1573         }
1574
1575         g_free(session_path);
1576
1577         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1578         g_slist_free(allowed_bearers);
1579
1580         return err;
1581 }
1582
1583 int __connman_session_destroy(DBusMessage *msg)
1584 {
1585         const char *owner, *session_path;
1586         struct connman_session *session;
1587
1588         owner = dbus_message_get_sender(msg);
1589
1590         DBG("owner %s", owner);
1591
1592         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1593                                                         DBUS_TYPE_INVALID);
1594         if (session_path == NULL)
1595                 return -EINVAL;
1596
1597         session = g_hash_table_lookup(session_hash, session_path);
1598         if (session == NULL)
1599                 return -EINVAL;
1600
1601         if (g_strcmp0(owner, session->owner) != 0)
1602                 return -EACCES;
1603
1604         session_disconnect(session);
1605
1606         return 0;
1607 }
1608
1609 connman_bool_t __connman_session_mode()
1610 {
1611         return sessionmode;
1612 }
1613
1614 void __connman_session_set_mode(connman_bool_t enable)
1615 {
1616         DBG("enable %d", enable);
1617
1618         sessionmode = enable;
1619
1620         if (sessionmode == TRUE)
1621                 __connman_service_disconnect_all();
1622 }
1623
1624 static void service_add(struct connman_service *service,
1625                         const char *name)
1626 {
1627         GHashTableIter iter;
1628         GSequenceIter *iter_service_list;
1629         gpointer key, value;
1630         struct connman_session *session;
1631         struct service_entry *entry;
1632
1633         DBG("service %p", service);
1634
1635         g_hash_table_iter_init(&iter, session_hash);
1636
1637         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1638                 session = value;
1639
1640                 if (service_match(session, service) == FALSE)
1641                         continue;
1642
1643                 entry = create_service_entry(service, name,
1644                                                 CONNMAN_SERVICE_STATE_IDLE);
1645                 if (entry == NULL)
1646                         continue;
1647
1648                 iter_service_list =
1649                         g_sequence_insert_sorted(session->service_list,
1650                                                         entry, sort_services,
1651                                                         session);
1652
1653                 g_hash_table_replace(session->service_hash, service,
1654                                         iter_service_list);
1655
1656                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1657         }
1658 }
1659
1660 static void service_remove(struct connman_service *service)
1661 {
1662
1663         GHashTableIter iter;
1664         gpointer key, value;
1665         struct connman_session *session;
1666         struct session_info *info;
1667
1668         DBG("service %p", service);
1669
1670         g_hash_table_iter_init(&iter, session_hash);
1671
1672         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1673                 GSequenceIter *iter;
1674                 session = value;
1675                 info = session->info;
1676
1677                 iter = g_hash_table_lookup(session->service_hash, service);
1678                 if (iter == NULL)
1679                         continue;
1680
1681                 g_sequence_remove(iter);
1682
1683                 if (info->entry != NULL && info->entry->service == service)
1684                         info->entry = NULL;
1685                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1686         }
1687 }
1688
1689 static void service_state_changed(struct connman_service *service,
1690                                         enum connman_service_state state)
1691 {
1692         GHashTableIter iter;
1693         gpointer key, value;
1694
1695         DBG("service %p state %d", service, state);
1696
1697         g_hash_table_iter_init(&iter, session_hash);
1698
1699         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1700                 struct connman_session *session = value;
1701                 GSequenceIter *service_iter;
1702
1703                 service_iter = g_hash_table_lookup(session->service_hash, service);
1704                 if (service_iter != NULL) {
1705                         struct service_entry *entry;
1706
1707                         entry = g_sequence_get(service_iter);
1708                         entry->state = state;
1709                 }
1710
1711                 session_changed(session,
1712                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1713         }
1714 }
1715
1716 static void ipconfig_changed(struct connman_service *service,
1717                                 struct connman_ipconfig *ipconfig)
1718 {
1719         GHashTableIter iter;
1720         gpointer key, value;
1721         struct connman_session *session;
1722         struct session_info *info;
1723         enum connman_ipconfig_type type;
1724
1725         DBG("service %p ipconfig %p", service, ipconfig);
1726
1727         type = __connman_ipconfig_get_config_type(ipconfig);
1728
1729         g_hash_table_iter_init(&iter, session_hash);
1730
1731         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1732                 session = value;
1733                 info = session->info;
1734
1735                 if (info->entry != NULL && info->entry->service == service) {
1736                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1737                                 ipconfig_ipv4_changed(session);
1738                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1739                                 ipconfig_ipv6_changed(session);
1740                 }
1741         }
1742 }
1743
1744 static struct connman_notifier session_notifier = {
1745         .name                   = "session",
1746         .service_add            = service_add,
1747         .service_remove         = service_remove,
1748         .service_state_changed  = service_state_changed,
1749         .ipconfig_changed       = ipconfig_changed,
1750 };
1751
1752 int __connman_session_init(void)
1753 {
1754         int err;
1755
1756         DBG("");
1757
1758         connection = connman_dbus_get_connection();
1759         if (connection == NULL)
1760                 return -1;
1761
1762         err = connman_notifier_register(&session_notifier);
1763         if (err < 0) {
1764                 dbus_connection_unref(connection);
1765                 return err;
1766         }
1767
1768         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1769                                                 NULL, cleanup_session);
1770
1771         sessionmode = FALSE;
1772         return 0;
1773 }
1774
1775 void __connman_session_cleanup(void)
1776 {
1777         DBG("");
1778
1779         if (connection == NULL)
1780                 return;
1781
1782         connman_notifier_unregister(&session_notifier);
1783
1784         g_hash_table_foreach(session_hash, release_session, NULL);
1785         g_hash_table_destroy(session_hash);
1786         session_hash = NULL;
1787
1788         dbus_connection_unref(connection);
1789 }