src/session.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2011  BWM CarIT GmbH. All rights reserved.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <errno.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34 static GHashTable *session_hash;
  35 static connman_bool_t sessionmode;
  36 static struct connman_session *ecall_session;
  37
  38 enum connman_session_trigger {
  39         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  40         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  41         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  42         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  43         CONNMAN_SESSION_TRIGGER_PERIODIC        = 4,
  44         CONNMAN_SESSION_TRIGGER_SERVICE         = 5,
  45         CONNMAN_SESSION_TRIGGER_ECALL           = 6,
  46 };
  47
  48 enum connman_session_reason {
  49         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  50         CONNMAN_SESSION_REASON_CONNECT          = 1,
  51         CONNMAN_SESSION_REASON_FREE_RIDE        = 2,
  52         CONNMAN_SESSION_REASON_PERIODIC         = 3,
  53 };
  54
  55 enum connman_session_roaming_policy {
  56         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  57         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  58         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  59         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  60         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  61         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  62 };
  63
  64 struct service_entry {
  65         /* track why this service was selected */
  66         enum connman_session_reason reason;
  67         enum connman_service_state state;
  68         const char *name;
  69         struct connman_service *service;
  70         const char *ifname;
  71         const char *bearer;
  72 };
  73
  74 struct session_info {
  75         connman_bool_t online;
  76         connman_bool_t priority;
  77         GSList *allowed_bearers;
  78         connman_bool_t avoid_handover;
  79         connman_bool_t stay_connected;
  80         unsigned int periodic_connect;
  81         unsigned int idle_timeout;
  82         connman_bool_t ecall;
  83         enum connman_session_roaming_policy roaming_policy;
  84         unsigned int marker;
  85
  86         struct service_entry *entry;
  87 };
  88
  89 struct connman_session {
  90         char *owner;
  91         char *session_path;
  92         char *notify_path;
  93         guint notify_watch;
  94
  95         connman_bool_t append_all;
  96         connman_bool_t info_dirty;
  97         struct session_info *info;
  98         struct session_info *info_last;
  99
 100         GSequence *service_list;
 101         GHashTable *service_hash;
 102 };
 103
 104 struct bearer_info {
 105         char *name;
 106         connman_bool_t match_all;
 107         enum connman_service_type service_type;
 108 };
 109
 110 static const char *trigger2string(enum connman_session_trigger trigger)
 111 {
 112         switch (trigger) {
 113         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 114                 break;
 115         case CONNMAN_SESSION_TRIGGER_SETTING:
 116                 return "setting";
 117         case CONNMAN_SESSION_TRIGGER_CONNECT:
 118                 return "connect";
 119         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 120                 return "disconnect";
 121         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 122                 return "periodic";
 123         case CONNMAN_SESSION_TRIGGER_SERVICE:
 124                 return "service";
 125         case CONNMAN_SESSION_TRIGGER_ECALL:
 126                 return "ecall";
 127         }
 128
 129         return NULL;
 130 }
 131
 132 static const char *reason2string(enum connman_session_reason reason)
 133 {
 134         switch (reason) {
 135         case CONNMAN_SESSION_REASON_UNKNOWN:
 136                 break;
 137         case CONNMAN_SESSION_REASON_CONNECT:
 138                 return "connect";
 139         case CONNMAN_SESSION_REASON_FREE_RIDE:
 140                 return "free-ride";
 141         case CONNMAN_SESSION_REASON_PERIODIC:
 142                 return "periodic";
 143         }
 144
 145         return NULL;
 146 }
 147
 148 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 149 {
 150         switch (policy) {
 151         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 152                 return "unknown";
 153         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 154                 return "default";
 155         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 156                 return "always";
 157         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 158                 return "forbidden";
 159         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 160                 return "national";
 161         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 162                 return "international";
 163         }
 164
 165         return NULL;
 166 }
 167
 168 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 169 {
 170         if (g_strcmp0(policy, "default") == 0)
 171                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 172         else if (g_strcmp0(policy, "always") == 0)
 173                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 174         else if (g_strcmp0(policy, "forbidden") == 0)
 175                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 176         else if (g_strcmp0(policy, "national") == 0)
 177                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 178         else if (g_strcmp0(policy, "international") == 0)
 179                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 180         else
 181                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 182 }
 183
 184 static enum connman_service_type bearer2service(const char *bearer)
 185 {
 186         if (bearer == NULL)
 187                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 188
 189         if (g_strcmp0(bearer, "ethernet") == 0)
 190                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 191         else if (g_strcmp0(bearer, "wifi") == 0)
 192                 return CONNMAN_SERVICE_TYPE_WIFI;
 193         else if (g_strcmp0(bearer, "wimax") == 0)
 194                 return CONNMAN_SERVICE_TYPE_WIMAX;
 195         else if (g_strcmp0(bearer, "bluetooth") == 0)
 196                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 197         else if (g_strcmp0(bearer, "3g") == 0)
 198                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 199         else if (g_strcmp0(bearer, "vpn") == 0)
 200                 return CONNMAN_SERVICE_TYPE_VPN;
 201         else
 202                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 203 }
 204
 205 static char *service2bearer(enum connman_service_type type)
 206 {
 207         switch (type) {
 208         case CONNMAN_SERVICE_TYPE_ETHERNET:
 209                 return "ethernet";
 210         case CONNMAN_SERVICE_TYPE_WIFI:
 211                 return "wifi";
 212         case CONNMAN_SERVICE_TYPE_WIMAX:
 213                 return "wimax";
 214         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 215                 return "bluetooth";
 216         case CONNMAN_SERVICE_TYPE_CELLULAR:
 217                 return "3g";
 218         case CONNMAN_SERVICE_TYPE_VPN:
 219                 return "vpn";
 220         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 221         case CONNMAN_SERVICE_TYPE_SYSTEM:
 222         case CONNMAN_SERVICE_TYPE_GPS:
 223         case CONNMAN_SERVICE_TYPE_GADGET:
 224                 return "";
 225         }
 226
 227         return "";
 228 }
 229
 230 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 231 {
 232         struct bearer_info *info = data;
 233
 234         g_free(info->name);
 235         g_free(info);
 236 }
 237
 238 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 239 {
 240         struct bearer_info *info;
 241         DBusMessageIter array;
 242         GSList *list = NULL;
 243
 244         dbus_message_iter_recurse(iter, &array);
 245
 246         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 247                 char *bearer = NULL;
 248
 249                 dbus_message_iter_get_basic(&array, &bearer);
 250
 251                 info = g_try_new0(struct bearer_info, 1);
 252                 if (info == NULL) {
 253                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 254                         g_slist_free(list);
 255
 256                         return NULL;
 257                 }
 258
 259                 info->name = g_strdup(bearer);
 260                 info->service_type = bearer2service(info->name);
 261
 262                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 263                                 g_strcmp0(info->name, "*") == 0) {
 264                         info->match_all = TRUE;
 265                 } else {
 266                         info->match_all = FALSE;
 267                 }
 268
 269                 list = g_slist_append(list, info);
 270
 271                 dbus_message_iter_next(&array);
 272         }
 273
 274         return list;
 275 }
 276
 277 static GSList *session_allowed_bearers_any(void)
 278 {
 279         struct bearer_info *info;
 280         GSList *list = NULL;
 281
 282         info = g_try_new0(struct bearer_info, 1);
 283         if (info == NULL) {
 284                 g_slist_free(list);
 285
 286                 return NULL;
 287         }
 288
 289         info->name = g_strdup("");
 290         info->match_all = TRUE;
 291         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 292
 293         list = g_slist_append(list, info);
 294
 295         return list;
 296 }
 297
 298 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 299 {
 300         struct session_info *info = user_data;
 301         GSList *list;
 302
 303         for (list = info->allowed_bearers;
 304                         list != NULL; list = list->next) {
 305                 struct bearer_info *info = list->data;
 306
 307                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 308                                                 &info->name);
 309         }
 310 }
 311
 312 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 313 {
 314         struct connman_service *service = user_data;
 315         struct connman_ipconfig *ipconfig_ipv4;
 316
 317         if (service == NULL)
 318                 return;
 319
 320         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 321         if (ipconfig_ipv4 == NULL)
 322                 return;
 323
 324         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 325 }
 326
 327 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 328 {
 329         struct connman_service *service = user_data;
 330         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 331
 332         if (service == NULL)
 333                 return;
 334
 335         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 336         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 337         if (ipconfig_ipv6 == NULL)
 338                 return;
 339
 340         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 341 }
 342
 343 static void append_notify(DBusMessageIter *dict,
 344                                         struct connman_session *session)
 345 {
 346         struct session_info *info = session->info;
 347         struct session_info *info_last = session->info_last;
 348         const char *policy;
 349         struct connman_service *service;
 350         const char *name, *ifname, *bearer;
 351
 352         if (session->append_all == TRUE ||
 353                         info->online != info_last->online) {
 354                 connman_dbus_dict_append_basic(dict, "Online",
 355                                                 DBUS_TYPE_BOOLEAN,
 356                                                 &info->online);
 357                 info_last->online = info->online;
 358         }
 359
 360         if (session->append_all == TRUE ||
 361                         info->entry != info_last->entry) {
 362                 if (info->entry == NULL) {
 363                         name = "";
 364                         ifname = "";
 365                         service = NULL;
 366                         bearer = "";
 367                 } else {
 368                         name = info->entry->name;
 369                         ifname = info->entry->ifname;
 370                         service = info->entry->service;
 371                         bearer = info->entry->bearer;
 372                 }
 373
 374                 connman_dbus_dict_append_basic(dict, "Name",
 375                                                 DBUS_TYPE_STRING,
 376                                                 &name);
 377
 378                 connman_dbus_dict_append_dict(dict, "IPv4",
 379                                                 append_ipconfig_ipv4,
 380                                                 service);
 381
 382                 connman_dbus_dict_append_dict(dict, "IPv6",
 383                                                 append_ipconfig_ipv6,
 384                                                 service);
 385
 386                 connman_dbus_dict_append_basic(dict, "Interface",
 387                                                 DBUS_TYPE_STRING,
 388                                                 &ifname);
 389
 390                 connman_dbus_dict_append_basic(dict, "Bearer",
 391                                                 DBUS_TYPE_STRING,
 392                                                 &bearer);
 393
 394                 info_last->entry = info->entry;
 395         }
 396
 397
 398         if (session->append_all == TRUE ||
 399                         info->priority != info_last->priority) {
 400                 connman_dbus_dict_append_basic(dict, "Priority",
 401                                                 DBUS_TYPE_BOOLEAN,
 402                                                 &info->priority);
 403                 info_last->priority = info->priority;
 404         }
 405
 406         if (session->append_all == TRUE ||
 407                         info->allowed_bearers != info_last->allowed_bearers) {
 408                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 409                                                 DBUS_TYPE_STRING,
 410                                                 append_allowed_bearers,
 411                                                 info);
 412                 info_last->allowed_bearers = info->allowed_bearers;
 413         }
 414
 415         if (session->append_all == TRUE ||
 416                         info->avoid_handover != info_last->avoid_handover) {
 417                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 418                                                 DBUS_TYPE_BOOLEAN,
 419                                                 &info->avoid_handover);
 420                 info_last->avoid_handover = info->avoid_handover;
 421         }
 422
 423         if (session->append_all == TRUE ||
 424                         info->stay_connected != info_last->stay_connected) {
 425                 connman_dbus_dict_append_basic(dict, "StayConnected",
 426                                                 DBUS_TYPE_BOOLEAN,
 427                                                 &info->stay_connected);
 428                 info_last->stay_connected = info->stay_connected;
 429         }
 430
 431         if (session->append_all == TRUE ||
 432                         info->periodic_connect != info_last->periodic_connect) {
 433                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 434                                                 DBUS_TYPE_UINT32,
 435                                                 &info->periodic_connect);
 436                 info_last->periodic_connect = info->periodic_connect;
 437         }
 438
 439         if (session->append_all == TRUE ||
 440                         info->idle_timeout != info_last->idle_timeout) {
 441                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 442                                                 DBUS_TYPE_UINT32,
 443                                                 &info->idle_timeout);
 444                 info_last->idle_timeout = info->idle_timeout;
 445         }
 446
 447         if (session->append_all == TRUE ||
 448                         info->ecall != info_last->ecall) {
 449                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 450                                                 DBUS_TYPE_BOOLEAN,
 451                                                 &info->ecall);
 452                 info_last->ecall = info->ecall;
 453         }
 454
 455         if (session->append_all == TRUE ||
 456                         info->roaming_policy != info_last->roaming_policy) {
 457                 policy = roamingpolicy2string(info->roaming_policy);
 458                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 459                                                 DBUS_TYPE_STRING,
 460                                                 &policy);
 461                 info_last->roaming_policy = info->roaming_policy;
 462         }
 463
 464         if (session->append_all == TRUE ||
 465                         info->marker != info_last->marker) {
 466                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 467                                                 DBUS_TYPE_UINT32,
 468                                                 &info->marker);
 469                 info_last->marker = info->marker;
 470         }
 471
 472         session->append_all = FALSE;
 473         session->info_dirty = FALSE;
 474 }
 475
 476 static gboolean session_notify(gpointer user_data)
 477 {
 478         struct connman_session *session = user_data;
 479         DBusMessage *msg;
 480         DBusMessageIter array, dict;
 481
 482         if (session->info_dirty == FALSE)
 483                 return 0;
 484
 485         DBG("session %p owner %s notify_path %s", session,
 486                 session->owner, session->notify_path);
 487
 488         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 489                                                 CONNMAN_NOTIFICATION_INTERFACE,
 490                                                 "Update");
 491         if (msg == NULL)
 492                 return FALSE;
 493
 494         dbus_message_iter_init_append(msg, &array);
 495         connman_dbus_dict_open(&array, &dict);
 496
 497         append_notify(&dict, session);
 498
 499         connman_dbus_dict_close(&array, &dict);
 500
 501         g_dbus_send_message(connection, msg);
 502
 503         session->info_dirty = FALSE;
 504
 505         return FALSE;
 506 }
 507
 508 static void ipconfig_ipv4_changed(struct connman_session *session)
 509 {
 510         struct session_info *info = session->info;
 511
 512         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 513                                                 "IPv4", append_ipconfig_ipv4,
 514                                                 info->entry->service);
 515 }
 516
 517 static void ipconfig_ipv6_changed(struct connman_session *session)
 518 {
 519         struct session_info *info = session->info;
 520
 521         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 522                                                 "IPv6", append_ipconfig_ipv6,
 523                                                 info->entry->service);
 524 }
 525
 526 static connman_bool_t service_type_match(struct connman_session *session,
 527                                         struct connman_service *service)
 528 {
 529         struct session_info *info = session->info;
 530         GSList *list;
 531
 532         for (list = info->allowed_bearers;
 533                         list != NULL; list = list->next) {
 534                 struct bearer_info *info = list->data;
 535                 enum connman_service_type service_type;
 536
 537                 if (info->match_all == TRUE)
 538                         return TRUE;
 539
 540                 service_type = connman_service_get_type(service);
 541                 if (info->service_type == service_type)
 542                         return TRUE;
 543         }
 544
 545         return FALSE;
 546 }
 547
 548 static connman_bool_t service_match(struct connman_session *session,
 549                                         struct connman_service *service)
 550 {
 551         if (service_type_match(session, service) == FALSE)
 552                 return FALSE;
 553
 554         return TRUE;
 555 }
 556
 557 static int service_type_weight(enum connman_service_type type)
 558 {
 559         /*
 560          * The session doesn't care which service
 561          * to use. Nevertheless we have to sort them
 562          * according their type. The ordering is
 563          *
 564          * 1. Ethernet
 565          * 2. Bluetooth
 566          * 3. WiFi/WiMAX
 567          * 4. GSM/UTMS/3G
 568          */
 569
 570         switch (type) {
 571         case CONNMAN_SERVICE_TYPE_ETHERNET:
 572                 return 4;
 573         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 574                 return 3;
 575         case CONNMAN_SERVICE_TYPE_WIFI:
 576         case CONNMAN_SERVICE_TYPE_WIMAX:
 577                 return 2;
 578         case CONNMAN_SERVICE_TYPE_CELLULAR:
 579                 return 1;
 580         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 581         case CONNMAN_SERVICE_TYPE_SYSTEM:
 582         case CONNMAN_SERVICE_TYPE_GPS:
 583         case CONNMAN_SERVICE_TYPE_VPN:
 584         case CONNMAN_SERVICE_TYPE_GADGET:
 585                 break;
 586         }
 587
 588         return 0;
 589 }
 590
 591 static gint sort_allowed_bearers(struct connman_service *service_a,
 592                                         struct connman_service *service_b,
 593                                         struct connman_session *session)
 594 {
 595         struct session_info *info = session->info;
 596         GSList *list;
 597         enum connman_service_type type_a, type_b;
 598         int weight_a, weight_b;
 599
 600         type_a = connman_service_get_type(service_a);
 601         type_b = connman_service_get_type(service_b);
 602
 603         for (list = info->allowed_bearers;
 604                         list != NULL; list = list->next) {
 605                 struct bearer_info *info = list->data;
 606
 607                 if (info->match_all == TRUE) {
 608                         if (type_a != type_b) {
 609                                 weight_a = service_type_weight(type_a);
 610                                 weight_b = service_type_weight(type_b);
 611
 612                                 if (weight_a > weight_b)
 613                                         return -1;
 614
 615                                 if (weight_a < weight_b)
 616                                         return 1;
 617
 618                                 return 0;
 619                         }
 620                 }
 621
 622                 if (type_a == info->service_type &&
 623                                 type_b == info->service_type) {
 624                         return 0;
 625                 }
 626
 627                 if (type_a == info->service_type &&
 628                                 type_b != info->service_type) {
 629                         return -1;
 630                 }
 631
 632                 if (type_a != info->service_type &&
 633                                 type_b == info->service_type) {
 634                         return 1;
 635                 }
 636         }
 637
 638         return 0;
 639 }
 640
 641 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 642 {
 643         struct service_entry *entry_a = (void *)a;
 644         struct service_entry *entry_b = (void *)b;
 645         struct connman_session *session = user_data;
 646
 647         return sort_allowed_bearers(entry_a->service, entry_b->service,
 648                                 session);
 649 }
 650
 651 static void cleanup_session(gpointer user_data)
 652 {
 653         struct connman_session *session = user_data;
 654         struct session_info *info = session->info;
 655
 656         DBG("remove %s", session->session_path);
 657
 658         g_hash_table_destroy(session->service_hash);
 659         g_sequence_free(session->service_list);
 660
 661         if (info->entry != NULL &&
 662                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 663                 __connman_service_disconnect(info->entry->service);
 664         }
 665
 666         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 667         g_slist_free(info->allowed_bearers);
 668
 669         g_free(session->owner);
 670         g_free(session->session_path);
 671         g_free(session->notify_path);
 672         g_free(session->info);
 673         g_free(session->info_last);
 674
 675         g_free(session);
 676 }
 677
 678 static void release_session(gpointer key, gpointer value, gpointer user_data)
 679 {
 680         struct connman_session *session = value;
 681         DBusMessage *message;
 682
 683         DBG("owner %s path %s", session->owner, session->notify_path);
 684
 685         if (session->notify_watch > 0)
 686                 g_dbus_remove_watch(connection, session->notify_watch);
 687
 688         g_dbus_unregister_interface(connection, session->session_path,
 689                                                 CONNMAN_SESSION_INTERFACE);
 690
 691         message = dbus_message_new_method_call(session->owner,
 692                                                 session->notify_path,
 693                                                 CONNMAN_NOTIFICATION_INTERFACE,
 694                                                 "Release");
 695         if (message == NULL)
 696                 return;
 697
 698         dbus_message_set_no_reply(message, TRUE);
 699
 700         g_dbus_send_message(connection, message);
 701 }
 702
 703 static int session_disconnect(struct connman_session *session)
 704 {
 705         DBG("session %p, %s", session, session->owner);
 706
 707         if (session->notify_watch > 0)
 708                 g_dbus_remove_watch(connection, session->notify_watch);
 709
 710         g_dbus_unregister_interface(connection, session->session_path,
 711                                                 CONNMAN_SESSION_INTERFACE);
 712
 713         g_hash_table_remove(session_hash, session->session_path);
 714
 715         return 0;
 716 }
 717
 718 static void owner_disconnect(DBusConnection *conn, void *user_data)
 719 {
 720         struct connman_session *session = user_data;
 721
 722         DBG("session %p, %s died", session, session->owner);
 723
 724         session_disconnect(session);
 725 }
 726
 727 static DBusMessage *destroy_session(DBusConnection *conn,
 728                                         DBusMessage *msg, void *user_data)
 729 {
 730         struct connman_session *session = user_data;
 731
 732         DBG("session %p", session);
 733
 734         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 735 }
 736
 737 static connman_bool_t is_connected(enum connman_service_state state)
 738 {
 739         switch (state) {
 740         case CONNMAN_SERVICE_STATE_UNKNOWN:
 741         case CONNMAN_SERVICE_STATE_IDLE:
 742         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 743         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 744         case CONNMAN_SERVICE_STATE_DISCONNECT:
 745         case CONNMAN_SERVICE_STATE_FAILURE:
 746                 break;
 747         case CONNMAN_SERVICE_STATE_READY:
 748         case CONNMAN_SERVICE_STATE_ONLINE:
 749                 return TRUE;
 750         }
 751
 752         return FALSE;
 753 }
 754
 755 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 756 {
 757         switch (reason) {
 758         case CONNMAN_SESSION_REASON_UNKNOWN:
 759         case CONNMAN_SESSION_REASON_FREE_RIDE:
 760                 break;
 761         case CONNMAN_SESSION_REASON_CONNECT:
 762         case CONNMAN_SESSION_REASON_PERIODIC:
 763                 return TRUE;
 764         }
 765
 766         return FALSE;
 767 }
 768
 769 static void test_and_disconnect(struct connman_session *session)
 770 {
 771         struct session_info *info = session->info;
 772
 773         if (info->entry == NULL)
 774                 return;
 775
 776         DBG("session %p reason %s service %p state %d",
 777                 session, reason2string(info->entry->reason),
 778                 info->entry->service, info->entry->state);
 779
 780         if (explicit_connect(info->entry->reason) == FALSE)
 781                 goto out;
 782
 783         if (__connman_service_session_dec(info->entry->service) == TRUE)
 784                 goto out;
 785
 786         if (ecall_session != NULL && ecall_session != session)
 787                 goto out;
 788
 789         __connman_service_disconnect(info->entry->service);
 790
 791         /*
 792          * TODO: We should mark this entry as pending work. In case
 793          * disconnect fails we just unassign this session from the
 794          * service and can't do anything later on it
 795          */
 796
 797 out:
 798         info->online = FALSE;
 799         info->entry = NULL;
 800 }
 801
 802 static void select_and_connect(struct connman_session *session,
 803                                 enum connman_session_reason reason)
 804 {
 805         struct session_info *info = session->info;
 806         struct service_entry *entry = NULL;
 807         GSequenceIter *iter;
 808         connman_bool_t do_connect = FALSE;
 809
 810         DBG("session %p reason %s", session, reason2string(reason));
 811
 812         iter = g_sequence_get_begin_iter(session->service_list);
 813
 814         while (g_sequence_iter_is_end(iter) == FALSE) {
 815                 entry = g_sequence_get(iter);
 816
 817                 switch (entry->state) {
 818                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 819                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 820                 case CONNMAN_SERVICE_STATE_READY:
 821                 case CONNMAN_SERVICE_STATE_ONLINE:
 822                         /* connecting or connected */
 823                         break;
 824                 case CONNMAN_SERVICE_STATE_IDLE:
 825                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 826                         if (explicit_connect(reason) == TRUE)
 827                                 do_connect = TRUE;
 828                         break;
 829                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 830                 case CONNMAN_SERVICE_STATE_FAILURE:
 831                         entry = NULL;
 832                         break;
 833                 }
 834
 835                 if (entry != NULL)
 836                         break;
 837
 838                 iter = g_sequence_iter_next(iter);
 839         }
 840
 841         if (info->entry != NULL && info->entry != entry)
 842                 test_and_disconnect(session);
 843
 844         if (entry != NULL) {
 845                 info->entry = entry;
 846                 info->entry->reason = reason;
 847
 848                 if (explicit_connect(reason) == TRUE)
 849                         __connman_service_session_inc(info->entry->service);
 850
 851                 if (do_connect == TRUE)
 852                         __connman_service_connect(info->entry->service);
 853                 else
 854                         info->online = is_connected(entry->state);
 855         }
 856 }
 857
 858 static void session_changed(struct connman_session *session,
 859                                 enum connman_session_trigger trigger)
 860 {
 861         struct session_info *info = session->info;
 862         struct session_info *info_last = session->info_last;
 863         GSequenceIter *iter;
 864
 865         /*
 866          * TODO: This only a placeholder for the 'real' algorithm to
 867          * play a bit around. So we are going to improve it step by step.
 868          */
 869
 870         DBG("session %p trigger %s", session, trigger2string(trigger));
 871
 872         switch (trigger) {
 873         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 874                 DBG("ignore session changed event");
 875                 return;
 876         case CONNMAN_SESSION_TRIGGER_SETTING:
 877                 if (info->entry != NULL) {
 878                         iter = g_hash_table_lookup(session->service_hash,
 879                                                         info->entry->service);
 880                         if (iter == NULL) {
 881                                 /*
 882                                  * This service is not part of this
 883                                  * session anymore.
 884                                  */
 885                                 test_and_disconnect(session);
 886                         }
 887                 }
 888
 889                 if (info->online == FALSE) {
 890                         select_and_connect(session,
 891                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 892                 }
 893
 894                 break;
 895         case CONNMAN_SESSION_TRIGGER_CONNECT:
 896                 if (info->online == TRUE) {
 897                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 898                         __connman_service_session_inc(info->entry->service);
 899                         break;
 900                 }
 901
 902                 select_and_connect(session,
 903                                 CONNMAN_SESSION_REASON_CONNECT);
 904
 905                 break;
 906         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 907                 test_and_disconnect(session);
 908
 909                 break;
 910         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 911                 if (info->online == TRUE) {
 912                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 913                         __connman_service_session_inc(info->entry->service);
 914                         break;
 915                 }
 916
 917                 select_and_connect(session,
 918                                 CONNMAN_SESSION_REASON_PERIODIC);
 919
 920                 break;
 921         case CONNMAN_SESSION_TRIGGER_SERVICE:
 922                 if (info->online == TRUE)
 923                         break;
 924
 925                 if (info->stay_connected == TRUE) {
 926                         DBG("StayConnected");
 927                         select_and_connect(session,
 928                                         CONNMAN_SESSION_REASON_CONNECT);
 929
 930                         break;
 931                 }
 932
 933                 select_and_connect(session,
 934                                 CONNMAN_SESSION_REASON_FREE_RIDE);
 935
 936                 break;
 937         case CONNMAN_SESSION_TRIGGER_ECALL:
 938                 if (info->online == FALSE && info->entry->service != NULL)
 939                         test_and_disconnect(session);
 940
 941                 break;
 942         }
 943
 944         if (info->entry != info_last->entry)
 945                 session->info_dirty = TRUE;
 946
 947         session_notify(session);
 948 }
 949
 950 static DBusMessage *connect_session(DBusConnection *conn,
 951                                         DBusMessage *msg, void *user_data)
 952 {
 953         struct connman_session *session = user_data;
 954
 955         DBG("session %p", session);
 956
 957         if (ecall_session != NULL && ecall_session != session)
 958                 return __connman_error_failed(msg, EBUSY);
 959
 960         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 961
 962         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 963 }
 964
 965 static DBusMessage *disconnect_session(DBusConnection *conn,
 966                                         DBusMessage *msg, void *user_data)
 967 {
 968         struct connman_session *session = user_data;
 969
 970         DBG("session %p", session);
 971
 972         if (ecall_session != NULL && ecall_session != session)
 973                 return __connman_error_failed(msg, EBUSY);
 974
 975         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 976
 977         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 978 }
 979
 980 static struct service_entry *create_service_entry(struct connman_service *service,
 981                                         const char *name,
 982                                         enum connman_service_state state)
 983 {
 984         struct service_entry *entry;
 985         enum connman_service_type type;
 986         int idx;
 987
 988         entry = g_try_new0(struct service_entry, 1);
 989         if (entry == NULL)
 990                 return entry;
 991
 992         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 993         entry->state = state;
 994         entry->name = name;
 995         entry->service = service;
 996
 997         idx = __connman_service_get_index(entry->service);
 998         entry->ifname = connman_inet_ifname(idx);
 999         if (entry->ifname == NULL)
1000                 entry->ifname = "";
1001
1002         type = connman_service_get_type(entry->service);
1003         entry->bearer = service2bearer(type);
1004
1005         return entry;
1006 }
1007
1008 static void destroy_service_entry(gpointer data)
1009 {
1010         struct service_entry *entry = data;
1011
1012         g_free(entry);
1013 }
1014
1015 static void update_allowed_bearers(struct connman_session *session)
1016 {
1017         struct service_entry *entry;
1018         GSequenceIter *iter;
1019
1020         if (session->service_list != NULL) {
1021                 g_hash_table_remove_all(session->service_hash);
1022                 g_sequence_free(session->service_list);
1023         }
1024
1025         session->service_list = __connman_service_get_list(session,
1026                                                         service_match,
1027                                                         create_service_entry,
1028                                                         destroy_service_entry);
1029
1030         g_sequence_sort(session->service_list, sort_services, session);
1031
1032         iter = g_sequence_get_begin_iter(session->service_list);
1033
1034         while (g_sequence_iter_is_end(iter) == FALSE) {
1035                 entry = g_sequence_get(iter);
1036
1037                 DBG("service %p type %s name %s", entry->service,
1038                         service2bearer(connman_service_get_type(entry->service)),
1039                         entry->name);
1040
1041                 g_hash_table_replace(session->service_hash,
1042                                         entry->service, iter);
1043
1044                 iter = g_sequence_iter_next(iter);
1045         }
1046
1047         session->info_dirty = TRUE;
1048 }
1049
1050 static void update_ecall_sessions(struct connman_session *session)
1051 {
1052         struct session_info *info = session->info;
1053         struct connman_session *session_iter;
1054         GHashTableIter iter;
1055         gpointer key, value;
1056
1057         g_hash_table_iter_init(&iter, session_hash);
1058
1059         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1060                 session_iter = value;
1061
1062                 if (session_iter == session)
1063                         continue;
1064
1065                 session_iter->info->ecall = info->ecall;
1066                 session_iter->info_dirty = TRUE;
1067
1068                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1069         }
1070 }
1071
1072 static void update_ecall(struct connman_session *session)
1073 {
1074         struct session_info *info = session->info;
1075         struct session_info *info_last = session->info_last;
1076
1077         DBG("session %p ecall_session %p ecall %d -> %d", session,
1078                 ecall_session, info_last->ecall, info->ecall);
1079
1080         if (ecall_session == NULL) {
1081                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1082                         goto err;
1083
1084                 ecall_session = session;
1085         } else if (ecall_session == session) {
1086                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1087                         goto err;
1088
1089                 ecall_session = NULL;
1090         } else {
1091                 goto err;
1092         }
1093
1094         update_ecall_sessions(session);
1095
1096         session->info_dirty = TRUE;
1097         return;
1098
1099 err:
1100         /* not a valid transition */
1101         info->ecall = info_last->ecall;
1102 }
1103
1104 static DBusMessage *change_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         struct session_info *info_last = session->info_last;
1110         DBusMessageIter iter, value;
1111         const char *name;
1112         GSList *allowed_bearers;
1113
1114         DBG("session %p", session);
1115         if (dbus_message_iter_init(msg, &iter) == FALSE)
1116                 return __connman_error_invalid_arguments(msg);
1117
1118         dbus_message_iter_get_basic(&iter, &name);
1119         dbus_message_iter_next(&iter);
1120         dbus_message_iter_recurse(&iter, &value);
1121
1122         switch (dbus_message_iter_get_arg_type(&value)) {
1123         case DBUS_TYPE_ARRAY:
1124                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1125                         allowed_bearers = session_parse_allowed_bearers(&value);
1126
1127                         g_slist_foreach(info->allowed_bearers,
1128                                         cleanup_bearer_info, NULL);
1129                         g_slist_free(info->allowed_bearers);
1130
1131                         if (allowed_bearers == NULL) {
1132                                 allowed_bearers = session_allowed_bearers_any();
1133
1134                                 if (allowed_bearers == NULL)
1135                                         return __connman_error_failed(msg, ENOMEM);
1136                         }
1137
1138                         info->allowed_bearers = allowed_bearers;
1139
1140                         update_allowed_bearers(session);
1141                 } else {
1142                         goto err;
1143                 }
1144                 break;
1145         case DBUS_TYPE_BOOLEAN:
1146                 if (g_str_equal(name, "Priority") == TRUE) {
1147                         dbus_message_iter_get_basic(&value,
1148                                         &info->priority);
1149
1150                         if (info_last->priority != info->priority)
1151                                 session->info_dirty = TRUE;
1152                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1153                         dbus_message_iter_get_basic(&value,
1154                                         &info->avoid_handover);
1155
1156                         if (info_last->avoid_handover != info->avoid_handover)
1157                                 session->info_dirty = TRUE;
1158                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1159                         dbus_message_iter_get_basic(&value,
1160                                         &info->stay_connected);
1161
1162                         if (info_last->stay_connected != info->stay_connected)
1163                                 session->info_dirty = TRUE;
1164                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1165                         dbus_message_iter_get_basic(&value,
1166                                         &info->ecall);
1167
1168                         update_ecall(session);
1169                 } else {
1170                         goto err;
1171                 }
1172                 break;
1173         case DBUS_TYPE_UINT32:
1174                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1175                         dbus_message_iter_get_basic(&value,
1176                                         &info->periodic_connect);
1177
1178                         if (info_last->periodic_connect != info->periodic_connect)
1179                                 session->info_dirty = TRUE;
1180                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1181                         dbus_message_iter_get_basic(&value,
1182                                         &info->idle_timeout);
1183
1184                         if (info_last->idle_timeout != info->idle_timeout)
1185                                 session->info_dirty = TRUE;
1186                 } else {
1187                         goto err;
1188                 }
1189                 break;
1190         case DBUS_TYPE_STRING:
1191                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1192                         const char *val;
1193                         dbus_message_iter_get_basic(&value, &val);
1194                         info->roaming_policy =
1195                                         string2roamingpolicy(val);
1196
1197                         if (info_last->roaming_policy != info->roaming_policy)
1198                                 session->info_dirty = TRUE;
1199                 } else {
1200                         goto err;
1201                 }
1202                 break;
1203         default:
1204                 goto err;
1205         }
1206
1207         if (session->info_dirty == TRUE)
1208                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1209
1210         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1211
1212 err:
1213         return __connman_error_invalid_arguments(msg);
1214 }
1215
1216 static GDBusMethodTable session_methods[] = {
1217         { "Destroy",    "",   "", destroy_session    },
1218         { "Connect",    "",   "", connect_session    },
1219         { "Disconnect", "",   "", disconnect_session },
1220         { "Change",     "sv", "", change_session     },
1221         { },
1222 };
1223
1224 int __connman_session_create(DBusMessage *msg)
1225 {
1226         const char *owner, *notify_path;
1227         char *session_path = NULL;
1228         DBusMessageIter iter, array;
1229         struct connman_session *session = NULL;
1230         struct session_info *info, *info_last;
1231
1232         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1233         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1234         enum connman_session_roaming_policy roaming_policy =
1235                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1236         GSList *allowed_bearers = NULL;
1237         unsigned int periodic_connect = 0;
1238         unsigned int idle_timeout = 0;
1239
1240         int err;
1241
1242         owner = dbus_message_get_sender(msg);
1243
1244         DBG("owner %s", owner);
1245
1246         if (ecall_session != NULL) {
1247                 /*
1248                  * If there is an emergency call already going on,
1249                  * ignore session creation attempt
1250                  */
1251                 err = -EBUSY;
1252                 goto err;
1253         }
1254
1255         dbus_message_iter_init(msg, &iter);
1256         dbus_message_iter_recurse(&iter, &array);
1257
1258         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1259                 DBusMessageIter entry, value;
1260                 const char *key, *val;
1261
1262                 dbus_message_iter_recurse(&array, &entry);
1263                 dbus_message_iter_get_basic(&entry, &key);
1264
1265                 dbus_message_iter_next(&entry);
1266                 dbus_message_iter_recurse(&entry, &value);
1267
1268                 switch (dbus_message_iter_get_arg_type(&value)) {
1269                 case DBUS_TYPE_ARRAY:
1270                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1271                                 allowed_bearers =
1272                                         session_parse_allowed_bearers(&value);
1273                         } else {
1274                                 return -EINVAL;
1275                         }
1276                         break;
1277                 case DBUS_TYPE_BOOLEAN:
1278                         if (g_str_equal(key, "Priority") == TRUE) {
1279                                 dbus_message_iter_get_basic(&value,
1280                                                         &priority);
1281                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1282                                 dbus_message_iter_get_basic(&value,
1283                                                         &avoid_handover);
1284                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1285                                 dbus_message_iter_get_basic(&value,
1286                                                         &stay_connected);
1287                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1288                                 dbus_message_iter_get_basic(&value,
1289                                                         &ecall);
1290                         } else {
1291                                 return -EINVAL;
1292                         }
1293                         break;
1294                 case DBUS_TYPE_UINT32:
1295                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1296                                 dbus_message_iter_get_basic(&value,
1297                                                         &periodic_connect);
1298                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1299                                 dbus_message_iter_get_basic(&value,
1300                                                         &idle_timeout);
1301                         } else {
1302                                 return -EINVAL;
1303                         }
1304                         break;
1305                 case DBUS_TYPE_STRING:
1306                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1307                                 dbus_message_iter_get_basic(&value, &val);
1308                                 roaming_policy = string2roamingpolicy(val);
1309                         } else {
1310                                 return -EINVAL;
1311                         }
1312                 }
1313                 dbus_message_iter_next(&array);
1314         }
1315
1316         dbus_message_iter_next(&iter);
1317         dbus_message_iter_get_basic(&iter, &notify_path);
1318
1319         if (notify_path == NULL) {
1320                 err = -EINVAL;
1321                 goto err;
1322         }
1323
1324         session_path = g_strdup_printf("/sessions%s", notify_path);
1325         if (session_path == NULL) {
1326                 err = -ENOMEM;
1327                 goto err;
1328         }
1329
1330         session = g_hash_table_lookup(session_hash, session_path);
1331         if (session != NULL) {
1332                 session = NULL;
1333                 err = -EEXIST;
1334                 goto err;
1335         }
1336
1337         session = g_try_new0(struct connman_session, 1);
1338         if (session == NULL) {
1339                 err = -ENOMEM;
1340                 goto err;
1341         }
1342
1343         session->info = g_try_new0(struct session_info, 1);
1344         if (session->info == NULL) {
1345                 err = -ENOMEM;
1346                 goto err;
1347         }
1348
1349         session->info_last = g_try_new0(struct session_info, 1);
1350         if (session->info_last == NULL) {
1351                 err = -ENOMEM;
1352                 goto err;
1353         }
1354
1355         info = session->info;
1356         info_last = session->info_last;
1357
1358         session->owner = g_strdup(owner);
1359         session->session_path = session_path;
1360         session->notify_path = g_strdup(notify_path);
1361         session->notify_watch =
1362                 g_dbus_add_disconnect_watch(connection, session->owner,
1363                                         owner_disconnect, session, NULL);
1364
1365         session->service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1366                                                 NULL, NULL);
1367
1368         info->online = FALSE;
1369         info->priority = priority;
1370         info->avoid_handover = avoid_handover;
1371         info->stay_connected = stay_connected;
1372         info->periodic_connect = periodic_connect;
1373         info->idle_timeout = idle_timeout;
1374         info->ecall = ecall;
1375         info->roaming_policy = roaming_policy;
1376         info->entry = NULL;
1377         info->marker = 0;
1378
1379         if (allowed_bearers == NULL) {
1380                 info->allowed_bearers =
1381                                 session_allowed_bearers_any();
1382
1383                 if (info->allowed_bearers == NULL) {
1384                         err = -ENOMEM;
1385                         goto err;
1386                 }
1387         } else {
1388                 info->allowed_bearers = allowed_bearers;
1389         }
1390
1391         g_hash_table_replace(session_hash, session->session_path, session);
1392
1393         DBG("add %s", session->session_path);
1394
1395         if (g_dbus_register_interface(connection, session->session_path,
1396                                         CONNMAN_SESSION_INTERFACE,
1397                                         session_methods, NULL,
1398                                         NULL, session, NULL) == FALSE) {
1399                 connman_error("Failed to register %s", session->session_path);
1400                 g_hash_table_remove(session_hash, session->session_path);
1401                 session = NULL;
1402
1403                 err = -EINVAL;
1404                 goto err;
1405         }
1406
1407         g_dbus_send_reply(connection, msg,
1408                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1409                                 DBUS_TYPE_INVALID);
1410
1411
1412         update_allowed_bearers(session);
1413         if (info->ecall == TRUE) {
1414                 ecall_session = session;
1415                 update_ecall_sessions(session);
1416         }
1417
1418         info_last->online = info->online;
1419         info_last->priority = info->priority;
1420         info_last->avoid_handover = info->avoid_handover;
1421         info_last->stay_connected = info->stay_connected;
1422         info_last->periodic_connect = info->periodic_connect;
1423         info_last->idle_timeout = info->idle_timeout;
1424         info_last->ecall = info->ecall;
1425         info_last->roaming_policy = info->roaming_policy;
1426         info_last->entry = info->entry;
1427         info_last->marker = info->marker;
1428         info_last->allowed_bearers = info->allowed_bearers;
1429
1430         session->info_dirty = TRUE;
1431         session->append_all = TRUE;
1432
1433         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1434
1435         return 0;
1436
1437 err:
1438         connman_error("Failed to create session");
1439
1440         if (session != NULL) {
1441                 if (session->info_last != NULL)
1442                         g_free(session->info_last);
1443                 if (session->info != NULL)
1444                         g_free(session->info);
1445                 g_free(session);
1446         }
1447
1448         g_free(session_path);
1449
1450         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1451         g_slist_free(allowed_bearers);
1452
1453         return err;
1454 }
1455
1456 int __connman_session_destroy(DBusMessage *msg)
1457 {
1458         const char *owner, *session_path;
1459         struct connman_session *session;
1460
1461         owner = dbus_message_get_sender(msg);
1462
1463         DBG("owner %s", owner);
1464
1465         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1466                                                         DBUS_TYPE_INVALID);
1467         if (session_path == NULL)
1468                 return -EINVAL;
1469
1470         session = g_hash_table_lookup(session_hash, session_path);
1471         if (session == NULL)
1472                 return -EINVAL;
1473
1474         if (g_strcmp0(owner, session->owner) != 0)
1475                 return -EACCES;
1476
1477         session_disconnect(session);
1478
1479         return 0;
1480 }
1481
1482 connman_bool_t __connman_session_mode()
1483 {
1484         return sessionmode;
1485 }
1486
1487 void __connman_session_set_mode(connman_bool_t enable)
1488 {
1489         DBG("enable %d", enable);
1490
1491         if (sessionmode == enable)
1492                 return;
1493
1494         sessionmode = enable;
1495
1496         if (sessionmode == TRUE)
1497                 __connman_service_disconnect_all();
1498 }
1499
1500 static void service_add(struct connman_service *service)
1501 {
1502         GHashTableIter iter;
1503         GSequenceIter *iter_service_list;
1504         gpointer key, value;
1505         struct connman_session *session;
1506
1507         DBG("service %p", service);
1508
1509         g_hash_table_iter_init(&iter, session_hash);
1510
1511         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1512                 session = value;
1513
1514                 if (service_match(session, service) == FALSE)
1515                         continue;
1516
1517                 iter_service_list =
1518                         g_sequence_insert_sorted(session->service_list,
1519                                                         service, sort_services,
1520                                                         session);
1521
1522                 g_hash_table_replace(session->service_hash, service,
1523                                         iter_service_list);
1524
1525                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1526         }
1527 }
1528
1529 static void service_remove(struct connman_service *service)
1530 {
1531
1532         GHashTableIter iter;
1533         gpointer key, value;
1534         struct connman_session *session;
1535         struct session_info *info;
1536
1537         DBG("service %p", service);
1538
1539         g_hash_table_iter_init(&iter, session_hash);
1540
1541         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1542                 GSequenceIter *iter;
1543                 session = value;
1544                 info = session->info;
1545
1546                 iter = g_hash_table_lookup(session->service_hash, service);
1547                 if (iter == NULL)
1548                         continue;
1549
1550                 g_sequence_remove(iter);
1551
1552                 info->entry = NULL;
1553                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1554         }
1555 }
1556
1557 static void service_state_changed(struct connman_service *service,
1558                                         enum connman_service_state state)
1559 {
1560         GHashTableIter iter;
1561         gpointer key, value;
1562         struct connman_session *session;
1563         struct session_info *info, *info_last;
1564
1565         DBG("service %p state %d", service, state);
1566
1567         g_hash_table_iter_init(&iter, session_hash);
1568
1569         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1570                 session = value;
1571                 info = session->info;
1572                 info_last = session->info_last;
1573
1574                 if (info->entry != NULL && info->entry->service == service) {
1575                         info->entry->state = state;
1576                         info->online = is_connected(info->entry->state);
1577                         if (info_last->online != info->online)
1578                                 session->info_dirty = TRUE;
1579                 }
1580
1581                 session_changed(session,
1582                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1583         }
1584 }
1585
1586 static void ipconfig_changed(struct connman_service *service,
1587                                 struct connman_ipconfig *ipconfig)
1588 {
1589         GHashTableIter iter;
1590         gpointer key, value;
1591         struct connman_session *session;
1592         struct session_info *info;
1593         enum connman_ipconfig_type type;
1594
1595         DBG("service %p ipconfig %p", service, ipconfig);
1596
1597         type = __connman_ipconfig_get_config_type(ipconfig);
1598
1599         g_hash_table_iter_init(&iter, session_hash);
1600
1601         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1602                 session = value;
1603                 info = session->info;
1604
1605                 if (info->entry != NULL && info->entry->service == service) {
1606                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1607                                 ipconfig_ipv4_changed(session);
1608                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1609                                 ipconfig_ipv6_changed(session);
1610                 }
1611         }
1612 }
1613
1614 static struct connman_notifier session_notifier = {
1615         .name                   = "session",
1616         .service_add            = service_add,
1617         .service_remove         = service_remove,
1618         .service_state_changed  = service_state_changed,
1619         .ipconfig_changed       = ipconfig_changed,
1620 };
1621
1622 int __connman_session_init(void)
1623 {
1624         int err;
1625
1626         DBG("");
1627
1628         connection = connman_dbus_get_connection();
1629         if (connection == NULL)
1630                 return -1;
1631
1632         err = connman_notifier_register(&session_notifier);
1633         if (err < 0) {
1634                 dbus_connection_unref(connection);
1635                 return err;
1636         }
1637
1638         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1639                                                 NULL, cleanup_session);
1640
1641         sessionmode = FALSE;
1642         return 0;
1643 }
1644
1645 void __connman_session_cleanup(void)
1646 {
1647         DBG("");
1648
1649         if (connection == NULL)
1650                 return;
1651
1652         connman_notifier_unregister(&session_notifier);
1653
1654         g_hash_table_foreach(session_hash, release_session, NULL);
1655         g_hash_table_destroy(session_hash);
1656
1657         dbus_connection_unref(connection);
1658 }