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         return FALSE;
 508 }
 509
 510 static void ipconfig_ipv4_changed(struct connman_session *session)
 511 {
 512         struct session_info *info = session->info;
 513
 514         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 515                                                 "IPv4", append_ipconfig_ipv4,
 516                                                 info->entry->service);
 517 }
 518
 519 static void ipconfig_ipv6_changed(struct connman_session *session)
 520 {
 521         struct session_info *info = session->info;
 522
 523         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 524                                                 "IPv6", append_ipconfig_ipv6,
 525                                                 info->entry->service);
 526 }
 527
 528 static connman_bool_t service_type_match(struct connman_session *session,
 529                                         struct connman_service *service)
 530 {
 531         struct session_info *info = session->info;
 532         GSList *list;
 533
 534         for (list = info->allowed_bearers;
 535                         list != NULL; list = list->next) {
 536                 struct bearer_info *info = list->data;
 537                 enum connman_service_type service_type;
 538
 539                 if (info->match_all == TRUE)
 540                         return TRUE;
 541
 542                 service_type = connman_service_get_type(service);
 543                 if (info->service_type == service_type)
 544                         return TRUE;
 545         }
 546
 547         return FALSE;
 548 }
 549
 550 static connman_bool_t service_match(struct connman_session *session,
 551                                         struct connman_service *service)
 552 {
 553         if (service_type_match(session, service) == FALSE)
 554                 return FALSE;
 555
 556         return TRUE;
 557 }
 558
 559 static int service_type_weight(enum connman_service_type type)
 560 {
 561         /*
 562          * The session doesn't care which service
 563          * to use. Nevertheless we have to sort them
 564          * according their type. The ordering is
 565          *
 566          * 1. Ethernet
 567          * 2. Bluetooth
 568          * 3. WiFi/WiMAX
 569          * 4. Cellular
 570          */
 571
 572         switch (type) {
 573         case CONNMAN_SERVICE_TYPE_ETHERNET:
 574                 return 4;
 575         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 576                 return 3;
 577         case CONNMAN_SERVICE_TYPE_WIFI:
 578         case CONNMAN_SERVICE_TYPE_WIMAX:
 579                 return 2;
 580         case CONNMAN_SERVICE_TYPE_CELLULAR:
 581                 return 1;
 582         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 583         case CONNMAN_SERVICE_TYPE_SYSTEM:
 584         case CONNMAN_SERVICE_TYPE_GPS:
 585         case CONNMAN_SERVICE_TYPE_VPN:
 586         case CONNMAN_SERVICE_TYPE_GADGET:
 587                 break;
 588         }
 589
 590         return 0;
 591 }
 592
 593 static gint sort_allowed_bearers(struct connman_service *service_a,
 594                                         struct connman_service *service_b,
 595                                         struct connman_session *session)
 596 {
 597         struct session_info *info = session->info;
 598         GSList *list;
 599         enum connman_service_type type_a, type_b;
 600         int weight_a, weight_b;
 601
 602         type_a = connman_service_get_type(service_a);
 603         type_b = connman_service_get_type(service_b);
 604
 605         for (list = info->allowed_bearers;
 606                         list != NULL; list = list->next) {
 607                 struct bearer_info *info = list->data;
 608
 609                 if (info->match_all == TRUE) {
 610                         if (type_a != type_b) {
 611                                 weight_a = service_type_weight(type_a);
 612                                 weight_b = service_type_weight(type_b);
 613
 614                                 if (weight_a > weight_b)
 615                                         return -1;
 616
 617                                 if (weight_a < weight_b)
 618                                         return 1;
 619
 620                                 return 0;
 621                         }
 622                 }
 623
 624                 if (type_a == info->service_type &&
 625                                 type_b == info->service_type) {
 626                         return 0;
 627                 }
 628
 629                 if (type_a == info->service_type &&
 630                                 type_b != info->service_type) {
 631                         return -1;
 632                 }
 633
 634                 if (type_a != info->service_type &&
 635                                 type_b == info->service_type) {
 636                         return 1;
 637                 }
 638         }
 639
 640         return 0;
 641 }
 642
 643 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 644 {
 645         struct service_entry *entry_a = (void *)a;
 646         struct service_entry *entry_b = (void *)b;
 647         struct connman_session *session = user_data;
 648
 649         return sort_allowed_bearers(entry_a->service, entry_b->service,
 650                                 session);
 651 }
 652
 653 static void cleanup_session(gpointer user_data)
 654 {
 655         struct connman_session *session = user_data;
 656         struct session_info *info = session->info;
 657
 658         DBG("remove %s", session->session_path);
 659
 660         g_hash_table_destroy(session->service_hash);
 661         g_sequence_free(session->service_list);
 662
 663         if (info->entry != NULL &&
 664                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 665                 __connman_service_disconnect(info->entry->service);
 666         }
 667
 668         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 669         g_slist_free(info->allowed_bearers);
 670
 671         g_free(session->owner);
 672         g_free(session->session_path);
 673         g_free(session->notify_path);
 674         g_free(session->info);
 675         g_free(session->info_last);
 676
 677         g_free(session);
 678 }
 679
 680 static connman_bool_t is_online(enum connman_service_state state)
 681 {
 682         switch (state) {
 683         case CONNMAN_SERVICE_STATE_UNKNOWN:
 684         case CONNMAN_SERVICE_STATE_IDLE:
 685         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 686         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 687         case CONNMAN_SERVICE_STATE_DISCONNECT:
 688         case CONNMAN_SERVICE_STATE_FAILURE:
 689         case CONNMAN_SERVICE_STATE_READY:
 690                 break;
 691         case CONNMAN_SERVICE_STATE_ONLINE:
 692                 return TRUE;
 693         }
 694
 695         return FALSE;
 696 }
 697
 698 static connman_bool_t is_connecting(enum connman_service_state state)
 699 {
 700         switch (state) {
 701         case CONNMAN_SERVICE_STATE_UNKNOWN:
 702         case CONNMAN_SERVICE_STATE_IDLE:
 703                 break;
 704         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 705         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 706         case CONNMAN_SERVICE_STATE_READY:
 707                 return TRUE;
 708         case CONNMAN_SERVICE_STATE_DISCONNECT:
 709         case CONNMAN_SERVICE_STATE_FAILURE:
 710         case CONNMAN_SERVICE_STATE_ONLINE:
 711                 break;
 712         }
 713
 714         return FALSE;
 715 }
 716
 717 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 718 {
 719         switch (reason) {
 720         case CONNMAN_SESSION_REASON_UNKNOWN:
 721         case CONNMAN_SESSION_REASON_FREE_RIDE:
 722         case CONNMAN_SESSION_REASON_DISCONNECT:
 723                 break;
 724         case CONNMAN_SESSION_REASON_CONNECT:
 725         case CONNMAN_SESSION_REASON_PERIODIC:
 726                 return TRUE;
 727         }
 728
 729         return FALSE;
 730 }
 731
 732 static connman_bool_t explicit_disconnect(struct session_info *info)
 733 {
 734         if (info->entry == NULL)
 735                 return FALSE;
 736
 737         DBG("reason %s service %p state %d",
 738                 reason2string(info->entry->reason),
 739                 info->entry->service, info->entry->state);
 740
 741         if (info->entry->reason == CONNMAN_SESSION_REASON_UNKNOWN)
 742                 return FALSE;
 743
 744         if (explicit_connect(info->entry->reason) == FALSE)
 745                 return FALSE;
 746
 747         if (__connman_service_session_dec(info->entry->service) == FALSE)
 748                 return FALSE;
 749
 750         if (ecall_info != NULL && ecall_info != info)
 751                 return FALSE;
 752
 753         return TRUE;
 754 }
 755
 756 static gboolean call_disconnect(gpointer user_data)
 757 {
 758         struct connman_service *service = user_data;
 759
 760         /*
 761          * TODO: We should mark this entry as pending work. In case
 762          * disconnect fails we just unassign this session from the
 763          * service and can't do anything later on it
 764          */
 765         DBG("disconnect service %p", service);
 766         __connman_service_disconnect(service);
 767
 768         return FALSE;
 769 }
 770
 771 static gboolean call_connect(gpointer user_data)
 772 {
 773         struct connman_service *service = user_data;
 774
 775         DBG("connect service %p", service);
 776         __connman_service_connect(service);
 777
 778         return FALSE;
 779 }
 780
 781 static connman_bool_t deselect_service(struct session_info *info)
 782 {
 783         struct connman_service *service;
 784         connman_bool_t disconnect, online;
 785
 786         DBG("");
 787
 788         if (info->entry == NULL)
 789                 return FALSE;
 790
 791         disconnect = explicit_disconnect(info);
 792
 793         online = is_connecting(info->entry->state) == TRUE ||
 794                         is_online(info->entry->state) == TRUE;
 795
 796         info->online = FALSE;
 797         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 798
 799         service = info->entry->service;
 800         info->entry = NULL;
 801
 802         DBG("disconnect %d online %d", disconnect, online);
 803
 804         if (disconnect == TRUE && online == TRUE)
 805                 g_timeout_add_seconds(0, call_disconnect, service);
 806
 807         return TRUE;
 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         session->info_dirty |= deselect_service(info);
 816
 817         info->reason = reason;
 818 }
 819
 820 static connman_bool_t 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 TRUE;
 830
 831         __connman_service_session_inc(info->entry->service);
 832
 833         return TRUE;
 834 }
 835
 836 static connman_bool_t select_offline_service(struct session_info *info,
 837                                         struct service_entry *entry)
 838 {
 839         if (explicit_connect(info->reason) == FALSE)
 840                 return FALSE;
 841
 842         info->online = FALSE;
 843
 844         info->entry = entry;
 845         info->entry->reason = info->reason;
 846
 847         __connman_service_session_inc(info->entry->service);
 848         g_timeout_add_seconds(0, call_connect, info->entry->service);
 849
 850         return TRUE;
 851 }
 852
 853 static connman_bool_t select_service(struct session_info *info,
 854                                 struct service_entry *entry)
 855 {
 856         DBG("service %p", entry->service);
 857
 858         if (is_online(entry->state) == TRUE)
 859                 return select_online_service(info, entry);
 860         else
 861                 return select_offline_service(info, entry);
 862 }
 863
 864 static void select_and_connect(struct connman_session *session,
 865                                 enum connman_session_reason reason)
 866 {
 867         struct session_info *info = session->info;
 868         struct service_entry *entry = NULL;
 869         GSequenceIter *iter;
 870
 871         DBG("session %p reason %s", session, reason2string(reason));
 872
 873         info->reason = reason;
 874
 875         iter = g_sequence_get_begin_iter(session->service_list);
 876
 877         while (g_sequence_iter_is_end(iter) == FALSE) {
 878                 entry = g_sequence_get(iter);
 879
 880                 switch (entry->state) {
 881                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 882                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 883                 case CONNMAN_SERVICE_STATE_READY:
 884                 case CONNMAN_SERVICE_STATE_ONLINE:
 885                 case CONNMAN_SERVICE_STATE_IDLE:
 886                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 887                         session->info_dirty |=
 888                                 select_service(info, entry);
 889                         return;
 890                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 891                 case CONNMAN_SERVICE_STATE_FAILURE:
 892                         break;
 893                 }
 894
 895                 iter = g_sequence_iter_next(iter);
 896         }
 897 }
 898
 899 static struct service_entry *create_service_entry(struct connman_service *service,
 900                                         const char *name,
 901                                         enum connman_service_state state)
 902 {
 903         struct service_entry *entry;
 904         enum connman_service_type type;
 905         int idx;
 906
 907         entry = g_try_new0(struct service_entry, 1);
 908         if (entry == NULL)
 909                 return entry;
 910
 911         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 912         entry->state = state;
 913         if (name != NULL)
 914                 entry->name = name;
 915         else
 916                 entry->name = "";
 917         entry->service = service;
 918
 919         idx = __connman_service_get_index(entry->service);
 920         entry->ifname = connman_inet_ifname(idx);
 921         if (entry->ifname == NULL)
 922                 entry->ifname = g_strdup("");
 923
 924         type = connman_service_get_type(entry->service);
 925         entry->bearer = service2bearer(type);
 926
 927         return entry;
 928 }
 929
 930 static void destroy_service_entry(gpointer data)
 931 {
 932         struct service_entry *entry = data;
 933
 934         g_free(entry->ifname);
 935
 936         g_free(entry);
 937 }
 938
 939 static void populate_service_list(struct connman_session *session)
 940 {
 941         struct service_entry *entry;
 942         GSequenceIter *iter;
 943
 944         session->service_hash =
 945                 g_hash_table_new_full(g_direct_hash, g_direct_equal,
 946                                         NULL, NULL);
 947         session->service_list = __connman_service_get_list(session,
 948                                                         service_match,
 949                                                         create_service_entry,
 950                                                         destroy_service_entry);
 951
 952         g_sequence_sort(session->service_list, sort_services, session);
 953
 954         iter = g_sequence_get_begin_iter(session->service_list);
 955
 956         while (g_sequence_iter_is_end(iter) == FALSE) {
 957                 entry = g_sequence_get(iter);
 958
 959                 DBG("service %p type %s name %s", entry->service,
 960                         service2bearer(connman_service_get_type(entry->service)),
 961                         entry->name);
 962
 963                 g_hash_table_replace(session->service_hash,
 964                                         entry->service, iter);
 965
 966                 iter = g_sequence_iter_next(iter);
 967         }
 968 }
 969
 970 static void session_changed(struct connman_session *session,
 971                                 enum connman_session_trigger trigger)
 972 {
 973         struct session_info *info = session->info;
 974         struct session_info *info_last = session->info_last;
 975         GSequenceIter *service_iter = NULL, *service_iter_last = NULL;
 976         GSequence *service_list_last;
 977         GHashTable *service_hash_last;
 978
 979         /*
 980          * TODO: This only a placeholder for the 'real' algorithm to
 981          * play a bit around. So we are going to improve it step by step.
 982          */
 983
 984         DBG("session %p trigger %s reason %s", session, trigger2string(trigger),
 985                                                 reason2string(info->reason));
 986
 987         if (info->entry != NULL) {
 988                 info->online = is_online(info->entry->state);
 989                 if (info_last->online != info->online)
 990                         session->info_dirty = TRUE;
 991         }
 992
 993         switch (trigger) {
 994         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 995                 DBG("ignore session changed event");
 996                 return;
 997         case CONNMAN_SESSION_TRIGGER_SETTING:
 998                 if (info->allowed_bearers != info_last->allowed_bearers) {
 999
1000                         service_hash_last = session->service_hash;
1001                         service_list_last = session->service_list;
1002
1003                         populate_service_list(session);
1004
1005                         if (info->entry != NULL) {
1006                                 service_iter_last = g_hash_table_lookup(
1007                                                         service_hash_last,
1008                                                         info->entry->service);
1009                                 service_iter = g_hash_table_lookup(
1010                                                         session->service_hash,
1011                                                         info->entry->service);
1012                         }
1013
1014                         if (service_iter == NULL && service_iter_last != NULL) {
1015                                 /*
1016                                  * The currently selected service is
1017                                  * not part of this session anymore.
1018                                  */
1019                                 deselect_and_disconnect(session, info->reason);
1020                         }
1021
1022                         g_hash_table_remove_all(service_hash_last);
1023                         g_sequence_free(service_list_last);
1024                 }
1025
1026                 if (info->online == FALSE) {
1027                         select_and_connect(session,
1028                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1029                 }
1030
1031                 break;
1032         case CONNMAN_SESSION_TRIGGER_CONNECT:
1033                 if (info->online == TRUE) {
1034                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
1035                                 break;
1036                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
1037                         __connman_service_session_inc(info->entry->service);
1038                         break;
1039                 }
1040
1041                 select_and_connect(session,
1042                                 CONNMAN_SESSION_REASON_CONNECT);
1043
1044                 break;
1045         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
1046                 deselect_and_disconnect(session,
1047                                         CONNMAN_SESSION_REASON_DISCONNECT);
1048
1049                 break;
1050         case CONNMAN_SESSION_TRIGGER_PERIODIC:
1051                 if (info->online == TRUE) {
1052                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
1053                         __connman_service_session_inc(info->entry->service);
1054                         break;
1055                 }
1056
1057                 select_and_connect(session,
1058                                 CONNMAN_SESSION_REASON_PERIODIC);
1059
1060                 break;
1061         case CONNMAN_SESSION_TRIGGER_SERVICE:
1062                 if (info->entry != NULL &&
1063                                 (is_connecting(info->entry->state) == TRUE ||
1064                                         is_online(info->entry->state) == TRUE)) {
1065                         break;
1066                 }
1067
1068                 deselect_and_disconnect(session, info->reason);
1069
1070                 if (info->reason == CONNMAN_SESSION_REASON_FREE_RIDE ||
1071                                 info->stay_connected == TRUE) {
1072                         select_and_connect(session, info->reason);
1073                 }
1074
1075                 break;
1076         case CONNMAN_SESSION_TRIGGER_ECALL:
1077                 if (info->online == FALSE && info->entry != NULL &&
1078                                 info->entry->service != NULL) {
1079                         deselect_and_disconnect(session, info->reason);
1080                 }
1081
1082                 break;
1083         }
1084
1085         session_notify(session);
1086 }
1087
1088 static DBusMessage *connect_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_CONNECT);
1100
1101         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1102 }
1103
1104 static DBusMessage *disconnect_session(DBusConnection *conn,
1105                                         DBusMessage *msg, void *user_data)
1106 {
1107         struct connman_session *session = user_data;
1108         struct session_info *info = session->info;
1109
1110         DBG("session %p", session);
1111
1112         if (ecall_info != NULL && ecall_info != info)
1113                 return __connman_error_failed(msg, EBUSY);
1114
1115         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1116
1117         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1118 }
1119
1120 static void update_ecall_sessions(struct connman_session *session)
1121 {
1122         struct session_info *info = session->info;
1123         struct connman_session *session_iter;
1124         GHashTableIter iter;
1125         gpointer key, value;
1126
1127         g_hash_table_iter_init(&iter, session_hash);
1128
1129         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1130                 session_iter = value;
1131
1132                 if (session_iter == session)
1133                         continue;
1134
1135                 session_iter->info->ecall = info->ecall;
1136                 session_iter->info_dirty = TRUE;
1137
1138                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1139         }
1140 }
1141
1142 static void update_ecall(struct connman_session *session)
1143 {
1144         struct session_info *info = session->info;
1145         struct session_info *info_last = session->info_last;
1146
1147         DBG("session %p ecall_info %p ecall %d -> %d", session,
1148                 ecall_info, info_last->ecall, info->ecall);
1149
1150         if (ecall_info == NULL) {
1151                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1152                         goto err;
1153
1154                 ecall_info = info;
1155         } else if (ecall_info == info) {
1156                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1157                         goto err;
1158
1159                 ecall_info = NULL;
1160         } else {
1161                 goto err;
1162         }
1163
1164         update_ecall_sessions(session);
1165
1166         session->info_dirty = TRUE;
1167         return;
1168
1169 err:
1170         /* not a valid transition */
1171         info->ecall = info_last->ecall;
1172 }
1173
1174 static DBusMessage *change_session(DBusConnection *conn,
1175                                         DBusMessage *msg, void *user_data)
1176 {
1177         struct connman_session *session = user_data;
1178         struct session_info *info = session->info;
1179         struct session_info *info_last = session->info_last;
1180         DBusMessageIter iter, value;
1181         const char *name;
1182         GSList *allowed_bearers;
1183
1184         DBG("session %p", session);
1185         if (dbus_message_iter_init(msg, &iter) == FALSE)
1186                 return __connman_error_invalid_arguments(msg);
1187
1188         dbus_message_iter_get_basic(&iter, &name);
1189         dbus_message_iter_next(&iter);
1190         dbus_message_iter_recurse(&iter, &value);
1191
1192         switch (dbus_message_iter_get_arg_type(&value)) {
1193         case DBUS_TYPE_ARRAY:
1194                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1195                         allowed_bearers = session_parse_allowed_bearers(&value);
1196
1197                         g_slist_foreach(info->allowed_bearers,
1198                                         cleanup_bearer_info, NULL);
1199                         g_slist_free(info->allowed_bearers);
1200
1201                         if (allowed_bearers == NULL) {
1202                                 allowed_bearers = session_allowed_bearers_any();
1203
1204                                 if (allowed_bearers == NULL)
1205                                         return __connman_error_failed(msg, ENOMEM);
1206                         }
1207
1208                         info->allowed_bearers = allowed_bearers;
1209
1210                         session->info_dirty = TRUE;
1211                 } else {
1212                         goto err;
1213                 }
1214                 break;
1215         case DBUS_TYPE_BOOLEAN:
1216                 if (g_str_equal(name, "Priority") == TRUE) {
1217                         dbus_message_iter_get_basic(&value,
1218                                         &info->priority);
1219
1220                         if (info_last->priority != info->priority)
1221                                 session->info_dirty = TRUE;
1222                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1223                         dbus_message_iter_get_basic(&value,
1224                                         &info->avoid_handover);
1225
1226                         if (info_last->avoid_handover != info->avoid_handover)
1227                                 session->info_dirty = TRUE;
1228                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1229                         dbus_message_iter_get_basic(&value,
1230                                         &info->stay_connected);
1231
1232                         if (info_last->stay_connected != info->stay_connected)
1233                                 session->info_dirty = TRUE;
1234                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1235                         dbus_message_iter_get_basic(&value,
1236                                         &info->ecall);
1237
1238                         update_ecall(session);
1239                 } else {
1240                         goto err;
1241                 }
1242                 break;
1243         case DBUS_TYPE_UINT32:
1244                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1245                         dbus_message_iter_get_basic(&value,
1246                                         &info->periodic_connect);
1247
1248                         if (info_last->periodic_connect != info->periodic_connect)
1249                                 session->info_dirty = TRUE;
1250                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1251                         dbus_message_iter_get_basic(&value,
1252                                         &info->idle_timeout);
1253
1254                         if (info_last->idle_timeout != info->idle_timeout)
1255                                 session->info_dirty = TRUE;
1256                 } else {
1257                         goto err;
1258                 }
1259                 break;
1260         case DBUS_TYPE_STRING:
1261                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1262                         const char *val;
1263                         dbus_message_iter_get_basic(&value, &val);
1264                         info->roaming_policy =
1265                                         string2roamingpolicy(val);
1266
1267                         if (info_last->roaming_policy != info->roaming_policy)
1268                                 session->info_dirty = TRUE;
1269                 } else {
1270                         goto err;
1271                 }
1272                 break;
1273         default:
1274                 goto err;
1275         }
1276
1277         if (session->info_dirty == TRUE)
1278                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1279
1280         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1281
1282 err:
1283         return __connman_error_invalid_arguments(msg);
1284 }
1285
1286 static void release_session(gpointer key, gpointer value, gpointer user_data)
1287 {
1288         struct connman_session *session = value;
1289         DBusMessage *message;
1290
1291         DBG("owner %s path %s", session->owner, session->notify_path);
1292
1293         if (session->notify_watch > 0)
1294                 g_dbus_remove_watch(connection, session->notify_watch);
1295
1296         g_dbus_unregister_interface(connection, session->session_path,
1297                                                 CONNMAN_SESSION_INTERFACE);
1298
1299         message = dbus_message_new_method_call(session->owner,
1300                                                 session->notify_path,
1301                                                 CONNMAN_NOTIFICATION_INTERFACE,
1302                                                 "Release");
1303         if (message == NULL)
1304                 return;
1305
1306         dbus_message_set_no_reply(message, TRUE);
1307
1308         g_dbus_send_message(connection, message);
1309 }
1310
1311 static int session_disconnect(struct connman_session *session)
1312 {
1313         DBG("session %p, %s", session, session->owner);
1314
1315         if (session->notify_watch > 0)
1316                 g_dbus_remove_watch(connection, session->notify_watch);
1317
1318         g_dbus_unregister_interface(connection, session->session_path,
1319                                                 CONNMAN_SESSION_INTERFACE);
1320
1321         deselect_and_disconnect(session,
1322                                 CONNMAN_SESSION_REASON_DISCONNECT);
1323
1324         g_hash_table_remove(session_hash, session->session_path);
1325
1326         return 0;
1327 }
1328
1329 static void owner_disconnect(DBusConnection *conn, void *user_data)
1330 {
1331         struct connman_session *session = user_data;
1332
1333         DBG("session %p, %s died", session, session->owner);
1334
1335         session_disconnect(session);
1336 }
1337
1338 static DBusMessage *destroy_session(DBusConnection *conn,
1339                                         DBusMessage *msg, void *user_data)
1340 {
1341         struct connman_session *session = user_data;
1342
1343         DBG("session %p", session);
1344
1345         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1346 }
1347
1348 static GDBusMethodTable session_methods[] = {
1349         { "Destroy",    "",   "", destroy_session    },
1350         { "Connect",    "",   "", connect_session    },
1351         { "Disconnect", "",   "", disconnect_session },
1352         { "Change",     "sv", "", change_session     },
1353         { },
1354 };
1355
1356 int __connman_session_create(DBusMessage *msg)
1357 {
1358         const char *owner, *notify_path;
1359         char *session_path = NULL;
1360         DBusMessageIter iter, array;
1361         struct connman_session *session = NULL;
1362         struct session_info *info, *info_last;
1363
1364         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1365         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1366         enum connman_session_roaming_policy roaming_policy =
1367                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1368         GSList *allowed_bearers = NULL;
1369         unsigned int periodic_connect = 0;
1370         unsigned int idle_timeout = 0;
1371
1372         int err;
1373
1374         owner = dbus_message_get_sender(msg);
1375
1376         DBG("owner %s", owner);
1377
1378         if (ecall_info != NULL) {
1379                 /*
1380                  * If there is an emergency call already going on,
1381                  * ignore session creation attempt
1382                  */
1383                 err = -EBUSY;
1384                 goto err;
1385         }
1386
1387         dbus_message_iter_init(msg, &iter);
1388         dbus_message_iter_recurse(&iter, &array);
1389
1390         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1391                 DBusMessageIter entry, value;
1392                 const char *key, *val;
1393
1394                 dbus_message_iter_recurse(&array, &entry);
1395                 dbus_message_iter_get_basic(&entry, &key);
1396
1397                 dbus_message_iter_next(&entry);
1398                 dbus_message_iter_recurse(&entry, &value);
1399
1400                 switch (dbus_message_iter_get_arg_type(&value)) {
1401                 case DBUS_TYPE_ARRAY:
1402                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1403                                 allowed_bearers =
1404                                         session_parse_allowed_bearers(&value);
1405                         } else {
1406                                 return -EINVAL;
1407                         }
1408                         break;
1409                 case DBUS_TYPE_BOOLEAN:
1410                         if (g_str_equal(key, "Priority") == TRUE) {
1411                                 dbus_message_iter_get_basic(&value,
1412                                                         &priority);
1413                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1414                                 dbus_message_iter_get_basic(&value,
1415                                                         &avoid_handover);
1416                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1417                                 dbus_message_iter_get_basic(&value,
1418                                                         &stay_connected);
1419                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1420                                 dbus_message_iter_get_basic(&value,
1421                                                         &ecall);
1422                         } else {
1423                                 return -EINVAL;
1424                         }
1425                         break;
1426                 case DBUS_TYPE_UINT32:
1427                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1428                                 dbus_message_iter_get_basic(&value,
1429                                                         &periodic_connect);
1430                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1431                                 dbus_message_iter_get_basic(&value,
1432                                                         &idle_timeout);
1433                         } else {
1434                                 return -EINVAL;
1435                         }
1436                         break;
1437                 case DBUS_TYPE_STRING:
1438                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1439                                 dbus_message_iter_get_basic(&value, &val);
1440                                 roaming_policy = string2roamingpolicy(val);
1441                         } else {
1442                                 return -EINVAL;
1443                         }
1444                 }
1445                 dbus_message_iter_next(&array);
1446         }
1447
1448         dbus_message_iter_next(&iter);
1449         dbus_message_iter_get_basic(&iter, &notify_path);
1450
1451         if (notify_path == NULL) {
1452                 err = -EINVAL;
1453                 goto err;
1454         }
1455
1456         session_path = g_strdup_printf("/sessions%s", notify_path);
1457         if (session_path == NULL) {
1458                 err = -ENOMEM;
1459                 goto err;
1460         }
1461
1462         session = g_hash_table_lookup(session_hash, session_path);
1463         if (session != NULL) {
1464                 session = NULL;
1465                 err = -EEXIST;
1466                 goto err;
1467         }
1468
1469         session = g_try_new0(struct connman_session, 1);
1470         if (session == NULL) {
1471                 err = -ENOMEM;
1472                 goto err;
1473         }
1474
1475         session->info = g_try_new0(struct session_info, 1);
1476         if (session->info == NULL) {
1477                 err = -ENOMEM;
1478                 goto err;
1479         }
1480
1481         session->info_last = g_try_new0(struct session_info, 1);
1482         if (session->info_last == NULL) {
1483                 err = -ENOMEM;
1484                 goto err;
1485         }
1486
1487         info = session->info;
1488         info_last = session->info_last;
1489
1490         session->owner = g_strdup(owner);
1491         session->session_path = session_path;
1492         session->notify_path = g_strdup(notify_path);
1493         session->notify_watch =
1494                 g_dbus_add_disconnect_watch(connection, session->owner,
1495                                         owner_disconnect, session, NULL);
1496
1497         info->online = FALSE;
1498         info->priority = priority;
1499         info->avoid_handover = avoid_handover;
1500         info->stay_connected = stay_connected;
1501         info->periodic_connect = periodic_connect;
1502         info->idle_timeout = idle_timeout;
1503         info->ecall = ecall;
1504         info->roaming_policy = roaming_policy;
1505         info->entry = NULL;
1506         info->marker = 0;
1507
1508         if (allowed_bearers == NULL) {
1509                 info->allowed_bearers =
1510                                 session_allowed_bearers_any();
1511
1512                 if (info->allowed_bearers == NULL) {
1513                         err = -ENOMEM;
1514                         goto err;
1515                 }
1516         } else {
1517                 info->allowed_bearers = allowed_bearers;
1518         }
1519
1520         g_hash_table_replace(session_hash, session->session_path, session);
1521
1522         DBG("add %s", session->session_path);
1523
1524         if (g_dbus_register_interface(connection, session->session_path,
1525                                         CONNMAN_SESSION_INTERFACE,
1526                                         session_methods, NULL,
1527                                         NULL, session, NULL) == FALSE) {
1528                 connman_error("Failed to register %s", session->session_path);
1529                 g_hash_table_remove(session_hash, session->session_path);
1530                 session = NULL;
1531
1532                 err = -EINVAL;
1533                 goto err;
1534         }
1535
1536         g_dbus_send_reply(connection, msg,
1537                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1538                                 DBUS_TYPE_INVALID);
1539
1540
1541         populate_service_list(session);
1542         if (info->ecall == TRUE) {
1543                 ecall_info = info;
1544                 update_ecall_sessions(session);
1545         }
1546
1547         info_last->online = info->online;
1548         info_last->priority = info->priority;
1549         info_last->avoid_handover = info->avoid_handover;
1550         info_last->stay_connected = info->stay_connected;
1551         info_last->periodic_connect = info->periodic_connect;
1552         info_last->idle_timeout = info->idle_timeout;
1553         info_last->ecall = info->ecall;
1554         info_last->roaming_policy = info->roaming_policy;
1555         info_last->entry = info->entry;
1556         info_last->marker = info->marker;
1557         info_last->allowed_bearers = info->allowed_bearers;
1558
1559         session->info_dirty = TRUE;
1560         session->append_all = TRUE;
1561
1562         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1563
1564         return 0;
1565
1566 err:
1567         connman_error("Failed to create session");
1568
1569         if (session != NULL) {
1570                 if (session->info_last != NULL)
1571                         g_free(session->info_last);
1572                 if (session->info != NULL)
1573                         g_free(session->info);
1574                 g_free(session);
1575         }
1576
1577         g_free(session_path);
1578
1579         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1580         g_slist_free(allowed_bearers);
1581
1582         return err;
1583 }
1584
1585 int __connman_session_destroy(DBusMessage *msg)
1586 {
1587         const char *owner, *session_path;
1588         struct connman_session *session;
1589
1590         owner = dbus_message_get_sender(msg);
1591
1592         DBG("owner %s", owner);
1593
1594         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1595                                                         DBUS_TYPE_INVALID);
1596         if (session_path == NULL)
1597                 return -EINVAL;
1598
1599         session = g_hash_table_lookup(session_hash, session_path);
1600         if (session == NULL)
1601                 return -EINVAL;
1602
1603         if (g_strcmp0(owner, session->owner) != 0)
1604                 return -EACCES;
1605
1606         session_disconnect(session);
1607
1608         return 0;
1609 }
1610
1611 connman_bool_t __connman_session_mode()
1612 {
1613         return sessionmode;
1614 }
1615
1616 void __connman_session_set_mode(connman_bool_t enable)
1617 {
1618         DBG("enable %d", enable);
1619
1620         sessionmode = enable;
1621
1622         if (sessionmode == TRUE)
1623                 __connman_service_disconnect_all();
1624 }
1625
1626 static void service_add(struct connman_service *service,
1627                         const char *name)
1628 {
1629         GHashTableIter iter;
1630         GSequenceIter *iter_service_list;
1631         gpointer key, value;
1632         struct connman_session *session;
1633         struct service_entry *entry;
1634
1635         DBG("service %p", service);
1636
1637         g_hash_table_iter_init(&iter, session_hash);
1638
1639         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1640                 session = value;
1641
1642                 if (service_match(session, service) == FALSE)
1643                         continue;
1644
1645                 entry = create_service_entry(service, name,
1646                                                 CONNMAN_SERVICE_STATE_IDLE);
1647                 if (entry == NULL)
1648                         continue;
1649
1650                 iter_service_list =
1651                         g_sequence_insert_sorted(session->service_list,
1652                                                         entry, sort_services,
1653                                                         session);
1654
1655                 g_hash_table_replace(session->service_hash, service,
1656                                         iter_service_list);
1657
1658                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1659         }
1660 }
1661
1662 static void service_remove(struct connman_service *service)
1663 {
1664
1665         GHashTableIter iter;
1666         gpointer key, value;
1667         struct connman_session *session;
1668         struct session_info *info;
1669
1670         DBG("service %p", service);
1671
1672         g_hash_table_iter_init(&iter, session_hash);
1673
1674         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1675                 GSequenceIter *iter;
1676                 session = value;
1677                 info = session->info;
1678
1679                 iter = g_hash_table_lookup(session->service_hash, service);
1680                 if (iter == NULL)
1681                         continue;
1682
1683                 g_sequence_remove(iter);
1684
1685                 if (info->entry != NULL && info->entry->service == service)
1686                         info->entry = NULL;
1687                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1688         }
1689 }
1690
1691 static void service_state_changed(struct connman_service *service,
1692                                         enum connman_service_state state)
1693 {
1694         GHashTableIter iter;
1695         gpointer key, value;
1696
1697         DBG("service %p state %d", service, state);
1698
1699         g_hash_table_iter_init(&iter, session_hash);
1700
1701         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1702                 struct connman_session *session = value;
1703                 GSequenceIter *service_iter;
1704
1705                 service_iter = g_hash_table_lookup(session->service_hash, service);
1706                 if (service_iter != NULL) {
1707                         struct service_entry *entry;
1708
1709                         entry = g_sequence_get(service_iter);
1710                         entry->state = state;
1711                 }
1712
1713                 session_changed(session,
1714                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1715         }
1716 }
1717
1718 static void ipconfig_changed(struct connman_service *service,
1719                                 struct connman_ipconfig *ipconfig)
1720 {
1721         GHashTableIter iter;
1722         gpointer key, value;
1723         struct connman_session *session;
1724         struct session_info *info;
1725         enum connman_ipconfig_type type;
1726
1727         DBG("service %p ipconfig %p", service, ipconfig);
1728
1729         type = __connman_ipconfig_get_config_type(ipconfig);
1730
1731         g_hash_table_iter_init(&iter, session_hash);
1732
1733         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1734                 session = value;
1735                 info = session->info;
1736
1737                 if (info->entry != NULL && info->entry->service == service) {
1738                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1739                                 ipconfig_ipv4_changed(session);
1740                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1741                                 ipconfig_ipv6_changed(session);
1742                 }
1743         }
1744 }
1745
1746 static struct connman_notifier session_notifier = {
1747         .name                   = "session",
1748         .service_add            = service_add,
1749         .service_remove         = service_remove,
1750         .service_state_changed  = service_state_changed,
1751         .ipconfig_changed       = ipconfig_changed,
1752 };
1753
1754 int __connman_session_init(void)
1755 {
1756         int err;
1757
1758         DBG("");
1759
1760         connection = connman_dbus_get_connection();
1761         if (connection == NULL)
1762                 return -1;
1763
1764         err = connman_notifier_register(&session_notifier);
1765         if (err < 0) {
1766                 dbus_connection_unref(connection);
1767                 return err;
1768         }
1769
1770         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1771                                                 NULL, cleanup_session);
1772
1773         sessionmode = FALSE;
1774         return 0;
1775 }
1776
1777 void __connman_session_cleanup(void)
1778 {
1779         DBG("");
1780
1781         if (connection == NULL)
1782                 return;
1783
1784         connman_notifier_unregister(&session_notifier);
1785
1786         g_hash_table_foreach(session_hash, release_session, NULL);
1787         g_hash_table_destroy(session_hash);
1788         session_hash = NULL;
1789
1790         dbus_connection_unref(connection);
1791 }