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 connman_bool_t is_online(enum connman_service_state state)
 679 {
 680         switch (state) {
 681         case CONNMAN_SERVICE_STATE_UNKNOWN:
 682         case CONNMAN_SERVICE_STATE_IDLE:
 683         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 684         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 685         case CONNMAN_SERVICE_STATE_DISCONNECT:
 686         case CONNMAN_SERVICE_STATE_FAILURE:
 687         case CONNMAN_SERVICE_STATE_READY:
 688                 break;
 689         case CONNMAN_SERVICE_STATE_ONLINE:
 690                 return TRUE;
 691         }
 692
 693         return FALSE;
 694 }
 695
 696 static connman_bool_t is_connecting(enum connman_service_state state)
 697 {
 698         switch (state) {
 699         case CONNMAN_SERVICE_STATE_UNKNOWN:
 700         case CONNMAN_SERVICE_STATE_IDLE:
 701                 break;
 702         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 703         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 704         case CONNMAN_SERVICE_STATE_READY:
 705                 return TRUE;
 706         case CONNMAN_SERVICE_STATE_DISCONNECT:
 707         case CONNMAN_SERVICE_STATE_FAILURE:
 708         case CONNMAN_SERVICE_STATE_ONLINE:
 709                 break;
 710         }
 711
 712         return FALSE;
 713 }
 714
 715 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 716 {
 717         switch (reason) {
 718         case CONNMAN_SESSION_REASON_UNKNOWN:
 719         case CONNMAN_SESSION_REASON_FREE_RIDE:
 720                 break;
 721         case CONNMAN_SESSION_REASON_CONNECT:
 722         case CONNMAN_SESSION_REASON_PERIODIC:
 723                 return TRUE;
 724         }
 725
 726         return FALSE;
 727 }
 728
 729 static connman_bool_t explicit_disconnect(struct connman_session *session)
 730 {
 731         struct session_info *info = session->info;
 732
 733         if (info->entry == NULL)
 734                 return FALSE;
 735
 736         DBG("session %p, reason %s service %p state %d",
 737                 session, reason2string(info->entry->reason),
 738                 info->entry->service, info->entry->state);
 739
 740         if (explicit_connect(info->entry->reason) == FALSE)
 741                 return FALSE;
 742
 743         if (__connman_service_session_dec(info->entry->service) == FALSE)
 744                 return FALSE;
 745
 746         if (ecall_session != NULL && ecall_session != session)
 747                 return FALSE;
 748
 749         return TRUE;
 750 }
 751
 752 static void test_and_disconnect(struct connman_session *session)
 753 {
 754         struct session_info *info = session->info;
 755         struct service_entry *entry;
 756         connman_bool_t disconnect;
 757
 758         disconnect = explicit_disconnect(session);
 759
 760         entry = info->entry;
 761
 762         info->online = FALSE;
 763         info->entry = NULL;
 764
 765         if (disconnect == TRUE) {
 766                 DBG("disconnect service %p", entry->service);
 767
 768                 /*
 769                  * TODO: We should mark this entry as pending work. In case
 770                  * disconnect fails we just unassign this session from the
 771                  * service and can't do anything later on it
 772                  */
 773                 __connman_service_disconnect(entry->service);
 774         }
 775 }
 776
 777 static void select_and_connect(struct connman_session *session,
 778                                 enum connman_session_reason reason)
 779 {
 780         struct session_info *info = session->info;
 781         struct service_entry *entry = NULL;
 782         GSequenceIter *iter;
 783         connman_bool_t do_connect = FALSE;
 784
 785         DBG("session %p reason %s", session, reason2string(reason));
 786
 787         iter = g_sequence_get_begin_iter(session->service_list);
 788
 789         while (g_sequence_iter_is_end(iter) == FALSE) {
 790                 entry = g_sequence_get(iter);
 791
 792                 switch (entry->state) {
 793                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 794                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 795                 case CONNMAN_SERVICE_STATE_READY:
 796                 case CONNMAN_SERVICE_STATE_ONLINE:
 797                         /* connecting or connected */
 798                         break;
 799                 case CONNMAN_SERVICE_STATE_IDLE:
 800                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 801                         if (explicit_connect(reason) == TRUE)
 802                                 do_connect = TRUE;
 803                         break;
 804                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 805                 case CONNMAN_SERVICE_STATE_FAILURE:
 806                         entry = NULL;
 807                         break;
 808                 }
 809
 810                 if (entry != NULL)
 811                         break;
 812
 813                 iter = g_sequence_iter_next(iter);
 814         }
 815
 816         if (info->entry != NULL && info->entry != entry)
 817                 test_and_disconnect(session);
 818
 819         if (entry != NULL) {
 820                 info->entry = entry;
 821                 info->entry->reason = reason;
 822
 823                 if (explicit_connect(reason) == TRUE)
 824                         __connman_service_session_inc(info->entry->service);
 825
 826                 if (do_connect == TRUE)
 827                         __connman_service_connect(info->entry->service);
 828                 else
 829                         info->online = is_online(entry->state);
 830         }
 831 }
 832
 833 static void session_changed(struct connman_session *session,
 834                                 enum connman_session_trigger trigger)
 835 {
 836         struct session_info *info = session->info;
 837         struct session_info *info_last = session->info_last;
 838         GSequenceIter *iter;
 839
 840         /*
 841          * TODO: This only a placeholder for the 'real' algorithm to
 842          * play a bit around. So we are going to improve it step by step.
 843          */
 844
 845         DBG("session %p trigger %s", session, trigger2string(trigger));
 846
 847         switch (trigger) {
 848         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 849                 DBG("ignore session changed event");
 850                 return;
 851         case CONNMAN_SESSION_TRIGGER_SETTING:
 852                 if (info->entry != NULL) {
 853                         iter = g_hash_table_lookup(session->service_hash,
 854                                                         info->entry->service);
 855                         if (iter == NULL) {
 856                                 /*
 857                                  * This service is not part of this
 858                                  * session anymore.
 859                                  */
 860                                 test_and_disconnect(session);
 861                         }
 862                 }
 863
 864                 if (info->online == FALSE) {
 865                         select_and_connect(session,
 866                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 867                 }
 868
 869                 break;
 870         case CONNMAN_SESSION_TRIGGER_CONNECT:
 871                 if (info->online == TRUE) {
 872                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 873                         __connman_service_session_inc(info->entry->service);
 874                         break;
 875                 }
 876
 877                 select_and_connect(session,
 878                                 CONNMAN_SESSION_REASON_CONNECT);
 879
 880                 break;
 881         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 882                 test_and_disconnect(session);
 883
 884                 break;
 885         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 886                 if (info->online == TRUE) {
 887                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 888                         __connman_service_session_inc(info->entry->service);
 889                         break;
 890                 }
 891
 892                 select_and_connect(session,
 893                                 CONNMAN_SESSION_REASON_PERIODIC);
 894
 895                 break;
 896         case CONNMAN_SESSION_TRIGGER_SERVICE:
 897                 if (info->online == TRUE)
 898                         break;
 899
 900                 if (info->entry != NULL &&
 901                                 is_connecting(info->entry->state) == TRUE) {
 902                         break;
 903                 }
 904
 905                 if (info->stay_connected == TRUE) {
 906                         DBG("StayConnected");
 907                         select_and_connect(session,
 908                                         CONNMAN_SESSION_REASON_CONNECT);
 909
 910                         break;
 911                 }
 912
 913                 select_and_connect(session,
 914                                 CONNMAN_SESSION_REASON_FREE_RIDE);
 915
 916                 break;
 917         case CONNMAN_SESSION_TRIGGER_ECALL:
 918                 if (info->online == FALSE && info->entry->service != NULL)
 919                         test_and_disconnect(session);
 920
 921                 break;
 922         }
 923
 924         if (info->entry != info_last->entry)
 925                 session->info_dirty = TRUE;
 926
 927         session_notify(session);
 928 }
 929
 930 static DBusMessage *connect_session(DBusConnection *conn,
 931                                         DBusMessage *msg, void *user_data)
 932 {
 933         struct connman_session *session = user_data;
 934
 935         DBG("session %p", session);
 936
 937         if (ecall_session != NULL && ecall_session != session)
 938                 return __connman_error_failed(msg, EBUSY);
 939
 940         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 941
 942         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 943 }
 944
 945 static DBusMessage *disconnect_session(DBusConnection *conn,
 946                                         DBusMessage *msg, void *user_data)
 947 {
 948         struct connman_session *session = user_data;
 949
 950         DBG("session %p", session);
 951
 952         if (ecall_session != NULL && ecall_session != session)
 953                 return __connman_error_failed(msg, EBUSY);
 954
 955         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 956
 957         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 958 }
 959
 960 static struct service_entry *create_service_entry(struct connman_service *service,
 961                                         const char *name,
 962                                         enum connman_service_state state)
 963 {
 964         struct service_entry *entry;
 965         enum connman_service_type type;
 966         int idx;
 967
 968         entry = g_try_new0(struct service_entry, 1);
 969         if (entry == NULL)
 970                 return entry;
 971
 972         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 973         entry->state = state;
 974         entry->name = name;
 975         entry->service = service;
 976
 977         idx = __connman_service_get_index(entry->service);
 978         entry->ifname = connman_inet_ifname(idx);
 979         if (entry->ifname == NULL)
 980                 entry->ifname = "";
 981
 982         type = connman_service_get_type(entry->service);
 983         entry->bearer = service2bearer(type);
 984
 985         return entry;
 986 }
 987
 988 static void destroy_service_entry(gpointer data)
 989 {
 990         struct service_entry *entry = data;
 991
 992         g_free(entry);
 993 }
 994
 995 static void update_allowed_bearers(struct connman_session *session)
 996 {
 997         struct service_entry *entry;
 998         GSequenceIter *iter;
 999
1000         if (session->service_list != NULL) {
1001                 g_hash_table_remove_all(session->service_hash);
1002                 g_sequence_free(session->service_list);
1003         }
1004
1005         session->service_list = __connman_service_get_list(session,
1006                                                         service_match,
1007                                                         create_service_entry,
1008                                                         destroy_service_entry);
1009
1010         g_sequence_sort(session->service_list, sort_services, session);
1011
1012         iter = g_sequence_get_begin_iter(session->service_list);
1013
1014         while (g_sequence_iter_is_end(iter) == FALSE) {
1015                 entry = g_sequence_get(iter);
1016
1017                 DBG("service %p type %s name %s", entry->service,
1018                         service2bearer(connman_service_get_type(entry->service)),
1019                         entry->name);
1020
1021                 g_hash_table_replace(session->service_hash,
1022                                         entry->service, iter);
1023
1024                 iter = g_sequence_iter_next(iter);
1025         }
1026
1027         session->info_dirty = TRUE;
1028 }
1029
1030 static void update_ecall_sessions(struct connman_session *session)
1031 {
1032         struct session_info *info = session->info;
1033         struct connman_session *session_iter;
1034         GHashTableIter iter;
1035         gpointer key, value;
1036
1037         g_hash_table_iter_init(&iter, session_hash);
1038
1039         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1040                 session_iter = value;
1041
1042                 if (session_iter == session)
1043                         continue;
1044
1045                 session_iter->info->ecall = info->ecall;
1046                 session_iter->info_dirty = TRUE;
1047
1048                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1049         }
1050 }
1051
1052 static void update_ecall(struct connman_session *session)
1053 {
1054         struct session_info *info = session->info;
1055         struct session_info *info_last = session->info_last;
1056
1057         DBG("session %p ecall_session %p ecall %d -> %d", session,
1058                 ecall_session, info_last->ecall, info->ecall);
1059
1060         if (ecall_session == NULL) {
1061                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1062                         goto err;
1063
1064                 ecall_session = session;
1065         } else if (ecall_session == session) {
1066                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1067                         goto err;
1068
1069                 ecall_session = NULL;
1070         } else {
1071                 goto err;
1072         }
1073
1074         update_ecall_sessions(session);
1075
1076         session->info_dirty = TRUE;
1077         return;
1078
1079 err:
1080         /* not a valid transition */
1081         info->ecall = info_last->ecall;
1082 }
1083
1084 static DBusMessage *change_session(DBusConnection *conn,
1085                                         DBusMessage *msg, void *user_data)
1086 {
1087         struct connman_session *session = user_data;
1088         struct session_info *info = session->info;
1089         struct session_info *info_last = session->info_last;
1090         DBusMessageIter iter, value;
1091         const char *name;
1092         GSList *allowed_bearers;
1093
1094         DBG("session %p", session);
1095         if (dbus_message_iter_init(msg, &iter) == FALSE)
1096                 return __connman_error_invalid_arguments(msg);
1097
1098         dbus_message_iter_get_basic(&iter, &name);
1099         dbus_message_iter_next(&iter);
1100         dbus_message_iter_recurse(&iter, &value);
1101
1102         switch (dbus_message_iter_get_arg_type(&value)) {
1103         case DBUS_TYPE_ARRAY:
1104                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1105                         allowed_bearers = session_parse_allowed_bearers(&value);
1106
1107                         g_slist_foreach(info->allowed_bearers,
1108                                         cleanup_bearer_info, NULL);
1109                         g_slist_free(info->allowed_bearers);
1110
1111                         if (allowed_bearers == NULL) {
1112                                 allowed_bearers = session_allowed_bearers_any();
1113
1114                                 if (allowed_bearers == NULL)
1115                                         return __connman_error_failed(msg, ENOMEM);
1116                         }
1117
1118                         info->allowed_bearers = allowed_bearers;
1119
1120                         update_allowed_bearers(session);
1121                 } else {
1122                         goto err;
1123                 }
1124                 break;
1125         case DBUS_TYPE_BOOLEAN:
1126                 if (g_str_equal(name, "Priority") == TRUE) {
1127                         dbus_message_iter_get_basic(&value,
1128                                         &info->priority);
1129
1130                         if (info_last->priority != info->priority)
1131                                 session->info_dirty = TRUE;
1132                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1133                         dbus_message_iter_get_basic(&value,
1134                                         &info->avoid_handover);
1135
1136                         if (info_last->avoid_handover != info->avoid_handover)
1137                                 session->info_dirty = TRUE;
1138                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1139                         dbus_message_iter_get_basic(&value,
1140                                         &info->stay_connected);
1141
1142                         if (info_last->stay_connected != info->stay_connected)
1143                                 session->info_dirty = TRUE;
1144                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1145                         dbus_message_iter_get_basic(&value,
1146                                         &info->ecall);
1147
1148                         update_ecall(session);
1149                 } else {
1150                         goto err;
1151                 }
1152                 break;
1153         case DBUS_TYPE_UINT32:
1154                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1155                         dbus_message_iter_get_basic(&value,
1156                                         &info->periodic_connect);
1157
1158                         if (info_last->periodic_connect != info->periodic_connect)
1159                                 session->info_dirty = TRUE;
1160                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1161                         dbus_message_iter_get_basic(&value,
1162                                         &info->idle_timeout);
1163
1164                         if (info_last->idle_timeout != info->idle_timeout)
1165                                 session->info_dirty = TRUE;
1166                 } else {
1167                         goto err;
1168                 }
1169                 break;
1170         case DBUS_TYPE_STRING:
1171                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1172                         const char *val;
1173                         dbus_message_iter_get_basic(&value, &val);
1174                         info->roaming_policy =
1175                                         string2roamingpolicy(val);
1176
1177                         if (info_last->roaming_policy != info->roaming_policy)
1178                                 session->info_dirty = TRUE;
1179                 } else {
1180                         goto err;
1181                 }
1182                 break;
1183         default:
1184                 goto err;
1185         }
1186
1187         if (session->info_dirty == TRUE)
1188                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1189
1190         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1191
1192 err:
1193         return __connman_error_invalid_arguments(msg);
1194 }
1195
1196 static void release_session(gpointer key, gpointer value, gpointer user_data)
1197 {
1198         struct connman_session *session = value;
1199         DBusMessage *message;
1200
1201         DBG("owner %s path %s", session->owner, session->notify_path);
1202
1203         if (session->notify_watch > 0)
1204                 g_dbus_remove_watch(connection, session->notify_watch);
1205
1206         g_dbus_unregister_interface(connection, session->session_path,
1207                                                 CONNMAN_SESSION_INTERFACE);
1208
1209         message = dbus_message_new_method_call(session->owner,
1210                                                 session->notify_path,
1211                                                 CONNMAN_NOTIFICATION_INTERFACE,
1212                                                 "Release");
1213         if (message == NULL)
1214                 return;
1215
1216         dbus_message_set_no_reply(message, TRUE);
1217
1218         g_dbus_send_message(connection, message);
1219 }
1220
1221 static int session_disconnect(struct connman_session *session)
1222 {
1223         DBG("session %p, %s", session, session->owner);
1224
1225         if (session->notify_watch > 0)
1226                 g_dbus_remove_watch(connection, session->notify_watch);
1227
1228         g_dbus_unregister_interface(connection, session->session_path,
1229                                                 CONNMAN_SESSION_INTERFACE);
1230
1231         g_hash_table_remove(session_hash, session->session_path);
1232
1233         return 0;
1234 }
1235
1236 static void owner_disconnect(DBusConnection *conn, void *user_data)
1237 {
1238         struct connman_session *session = user_data;
1239
1240         DBG("session %p, %s died", session, session->owner);
1241
1242         session_disconnect(session);
1243 }
1244
1245 static DBusMessage *destroy_session(DBusConnection *conn,
1246                                         DBusMessage *msg, void *user_data)
1247 {
1248         struct connman_session *session = user_data;
1249
1250         DBG("session %p", session);
1251
1252         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1253 }
1254
1255 static GDBusMethodTable session_methods[] = {
1256         { "Destroy",    "",   "", destroy_session    },
1257         { "Connect",    "",   "", connect_session    },
1258         { "Disconnect", "",   "", disconnect_session },
1259         { "Change",     "sv", "", change_session     },
1260         { },
1261 };
1262
1263 int __connman_session_create(DBusMessage *msg)
1264 {
1265         const char *owner, *notify_path;
1266         char *session_path = NULL;
1267         DBusMessageIter iter, array;
1268         struct connman_session *session = NULL;
1269         struct session_info *info, *info_last;
1270
1271         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1272         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1273         enum connman_session_roaming_policy roaming_policy =
1274                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1275         GSList *allowed_bearers = NULL;
1276         unsigned int periodic_connect = 0;
1277         unsigned int idle_timeout = 0;
1278
1279         int err;
1280
1281         owner = dbus_message_get_sender(msg);
1282
1283         DBG("owner %s", owner);
1284
1285         if (ecall_session != NULL) {
1286                 /*
1287                  * If there is an emergency call already going on,
1288                  * ignore session creation attempt
1289                  */
1290                 err = -EBUSY;
1291                 goto err;
1292         }
1293
1294         dbus_message_iter_init(msg, &iter);
1295         dbus_message_iter_recurse(&iter, &array);
1296
1297         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1298                 DBusMessageIter entry, value;
1299                 const char *key, *val;
1300
1301                 dbus_message_iter_recurse(&array, &entry);
1302                 dbus_message_iter_get_basic(&entry, &key);
1303
1304                 dbus_message_iter_next(&entry);
1305                 dbus_message_iter_recurse(&entry, &value);
1306
1307                 switch (dbus_message_iter_get_arg_type(&value)) {
1308                 case DBUS_TYPE_ARRAY:
1309                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1310                                 allowed_bearers =
1311                                         session_parse_allowed_bearers(&value);
1312                         } else {
1313                                 return -EINVAL;
1314                         }
1315                         break;
1316                 case DBUS_TYPE_BOOLEAN:
1317                         if (g_str_equal(key, "Priority") == TRUE) {
1318                                 dbus_message_iter_get_basic(&value,
1319                                                         &priority);
1320                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1321                                 dbus_message_iter_get_basic(&value,
1322                                                         &avoid_handover);
1323                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1324                                 dbus_message_iter_get_basic(&value,
1325                                                         &stay_connected);
1326                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1327                                 dbus_message_iter_get_basic(&value,
1328                                                         &ecall);
1329                         } else {
1330                                 return -EINVAL;
1331                         }
1332                         break;
1333                 case DBUS_TYPE_UINT32:
1334                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1335                                 dbus_message_iter_get_basic(&value,
1336                                                         &periodic_connect);
1337                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1338                                 dbus_message_iter_get_basic(&value,
1339                                                         &idle_timeout);
1340                         } else {
1341                                 return -EINVAL;
1342                         }
1343                         break;
1344                 case DBUS_TYPE_STRING:
1345                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1346                                 dbus_message_iter_get_basic(&value, &val);
1347                                 roaming_policy = string2roamingpolicy(val);
1348                         } else {
1349                                 return -EINVAL;
1350                         }
1351                 }
1352                 dbus_message_iter_next(&array);
1353         }
1354
1355         dbus_message_iter_next(&iter);
1356         dbus_message_iter_get_basic(&iter, &notify_path);
1357
1358         if (notify_path == NULL) {
1359                 err = -EINVAL;
1360                 goto err;
1361         }
1362
1363         session_path = g_strdup_printf("/sessions%s", notify_path);
1364         if (session_path == NULL) {
1365                 err = -ENOMEM;
1366                 goto err;
1367         }
1368
1369         session = g_hash_table_lookup(session_hash, session_path);
1370         if (session != NULL) {
1371                 session = NULL;
1372                 err = -EEXIST;
1373                 goto err;
1374         }
1375
1376         session = g_try_new0(struct connman_session, 1);
1377         if (session == NULL) {
1378                 err = -ENOMEM;
1379                 goto err;
1380         }
1381
1382         session->info = g_try_new0(struct session_info, 1);
1383         if (session->info == NULL) {
1384                 err = -ENOMEM;
1385                 goto err;
1386         }
1387
1388         session->info_last = g_try_new0(struct session_info, 1);
1389         if (session->info_last == NULL) {
1390                 err = -ENOMEM;
1391                 goto err;
1392         }
1393
1394         info = session->info;
1395         info_last = session->info_last;
1396
1397         session->owner = g_strdup(owner);
1398         session->session_path = session_path;
1399         session->notify_path = g_strdup(notify_path);
1400         session->notify_watch =
1401                 g_dbus_add_disconnect_watch(connection, session->owner,
1402                                         owner_disconnect, session, NULL);
1403
1404         session->service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1405                                                 NULL, NULL);
1406
1407         info->online = FALSE;
1408         info->priority = priority;
1409         info->avoid_handover = avoid_handover;
1410         info->stay_connected = stay_connected;
1411         info->periodic_connect = periodic_connect;
1412         info->idle_timeout = idle_timeout;
1413         info->ecall = ecall;
1414         info->roaming_policy = roaming_policy;
1415         info->entry = NULL;
1416         info->marker = 0;
1417
1418         if (allowed_bearers == NULL) {
1419                 info->allowed_bearers =
1420                                 session_allowed_bearers_any();
1421
1422                 if (info->allowed_bearers == NULL) {
1423                         err = -ENOMEM;
1424                         goto err;
1425                 }
1426         } else {
1427                 info->allowed_bearers = allowed_bearers;
1428         }
1429
1430         g_hash_table_replace(session_hash, session->session_path, session);
1431
1432         DBG("add %s", session->session_path);
1433
1434         if (g_dbus_register_interface(connection, session->session_path,
1435                                         CONNMAN_SESSION_INTERFACE,
1436                                         session_methods, NULL,
1437                                         NULL, session, NULL) == FALSE) {
1438                 connman_error("Failed to register %s", session->session_path);
1439                 g_hash_table_remove(session_hash, session->session_path);
1440                 session = NULL;
1441
1442                 err = -EINVAL;
1443                 goto err;
1444         }
1445
1446         g_dbus_send_reply(connection, msg,
1447                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1448                                 DBUS_TYPE_INVALID);
1449
1450
1451         update_allowed_bearers(session);
1452         if (info->ecall == TRUE) {
1453                 ecall_session = session;
1454                 update_ecall_sessions(session);
1455         }
1456
1457         info_last->online = info->online;
1458         info_last->priority = info->priority;
1459         info_last->avoid_handover = info->avoid_handover;
1460         info_last->stay_connected = info->stay_connected;
1461         info_last->periodic_connect = info->periodic_connect;
1462         info_last->idle_timeout = info->idle_timeout;
1463         info_last->ecall = info->ecall;
1464         info_last->roaming_policy = info->roaming_policy;
1465         info_last->entry = info->entry;
1466         info_last->marker = info->marker;
1467         info_last->allowed_bearers = info->allowed_bearers;
1468
1469         session->info_dirty = TRUE;
1470         session->append_all = TRUE;
1471
1472         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1473
1474         return 0;
1475
1476 err:
1477         connman_error("Failed to create session");
1478
1479         if (session != NULL) {
1480                 if (session->info_last != NULL)
1481                         g_free(session->info_last);
1482                 if (session->info != NULL)
1483                         g_free(session->info);
1484                 g_free(session);
1485         }
1486
1487         g_free(session_path);
1488
1489         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1490         g_slist_free(allowed_bearers);
1491
1492         return err;
1493 }
1494
1495 int __connman_session_destroy(DBusMessage *msg)
1496 {
1497         const char *owner, *session_path;
1498         struct connman_session *session;
1499
1500         owner = dbus_message_get_sender(msg);
1501
1502         DBG("owner %s", owner);
1503
1504         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1505                                                         DBUS_TYPE_INVALID);
1506         if (session_path == NULL)
1507                 return -EINVAL;
1508
1509         session = g_hash_table_lookup(session_hash, session_path);
1510         if (session == NULL)
1511                 return -EINVAL;
1512
1513         if (g_strcmp0(owner, session->owner) != 0)
1514                 return -EACCES;
1515
1516         session_disconnect(session);
1517
1518         return 0;
1519 }
1520
1521 connman_bool_t __connman_session_mode()
1522 {
1523         return sessionmode;
1524 }
1525
1526 void __connman_session_set_mode(connman_bool_t enable)
1527 {
1528         DBG("enable %d", enable);
1529
1530         if (sessionmode == enable)
1531                 return;
1532
1533         sessionmode = enable;
1534
1535         if (sessionmode == TRUE)
1536                 __connman_service_disconnect_all();
1537 }
1538
1539 static void service_add(struct connman_service *service)
1540 {
1541         GHashTableIter iter;
1542         GSequenceIter *iter_service_list;
1543         gpointer key, value;
1544         struct connman_session *session;
1545
1546         DBG("service %p", service);
1547
1548         g_hash_table_iter_init(&iter, session_hash);
1549
1550         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1551                 session = value;
1552
1553                 if (service_match(session, service) == FALSE)
1554                         continue;
1555
1556                 iter_service_list =
1557                         g_sequence_insert_sorted(session->service_list,
1558                                                         service, sort_services,
1559                                                         session);
1560
1561                 g_hash_table_replace(session->service_hash, service,
1562                                         iter_service_list);
1563
1564                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1565         }
1566 }
1567
1568 static void service_remove(struct connman_service *service)
1569 {
1570
1571         GHashTableIter iter;
1572         gpointer key, value;
1573         struct connman_session *session;
1574         struct session_info *info;
1575
1576         DBG("service %p", service);
1577
1578         g_hash_table_iter_init(&iter, session_hash);
1579
1580         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1581                 GSequenceIter *iter;
1582                 session = value;
1583                 info = session->info;
1584
1585                 iter = g_hash_table_lookup(session->service_hash, service);
1586                 if (iter == NULL)
1587                         continue;
1588
1589                 g_sequence_remove(iter);
1590
1591                 info->entry = NULL;
1592                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1593         }
1594 }
1595
1596 static void service_state_changed(struct connman_service *service,
1597                                         enum connman_service_state state)
1598 {
1599         GHashTableIter iter;
1600         gpointer key, value;
1601         struct connman_session *session;
1602         struct session_info *info, *info_last;
1603
1604         DBG("service %p state %d", service, state);
1605
1606         g_hash_table_iter_init(&iter, session_hash);
1607
1608         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1609                 session = value;
1610                 info = session->info;
1611                 info_last = session->info_last;
1612
1613                 if (info->entry != NULL && info->entry->service == service) {
1614                         info->entry->state = state;
1615                         info->online = is_online(info->entry->state);
1616                         if (info_last->online != info->online)
1617                                 session->info_dirty = TRUE;
1618                 }
1619
1620                 session_changed(session,
1621                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1622         }
1623 }
1624
1625 static void ipconfig_changed(struct connman_service *service,
1626                                 struct connman_ipconfig *ipconfig)
1627 {
1628         GHashTableIter iter;
1629         gpointer key, value;
1630         struct connman_session *session;
1631         struct session_info *info;
1632         enum connman_ipconfig_type type;
1633
1634         DBG("service %p ipconfig %p", service, ipconfig);
1635
1636         type = __connman_ipconfig_get_config_type(ipconfig);
1637
1638         g_hash_table_iter_init(&iter, session_hash);
1639
1640         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1641                 session = value;
1642                 info = session->info;
1643
1644                 if (info->entry != NULL && info->entry->service == service) {
1645                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1646                                 ipconfig_ipv4_changed(session);
1647                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1648                                 ipconfig_ipv6_changed(session);
1649                 }
1650         }
1651 }
1652
1653 static struct connman_notifier session_notifier = {
1654         .name                   = "session",
1655         .service_add            = service_add,
1656         .service_remove         = service_remove,
1657         .service_state_changed  = service_state_changed,
1658         .ipconfig_changed       = ipconfig_changed,
1659 };
1660
1661 int __connman_session_init(void)
1662 {
1663         int err;
1664
1665         DBG("");
1666
1667         connection = connman_dbus_get_connection();
1668         if (connection == NULL)
1669                 return -1;
1670
1671         err = connman_notifier_register(&session_notifier);
1672         if (err < 0) {
1673                 dbus_connection_unref(connection);
1674                 return err;
1675         }
1676
1677         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1678                                                 NULL, cleanup_session);
1679
1680         sessionmode = FALSE;
1681         return 0;
1682 }
1683
1684 void __connman_session_cleanup(void)
1685 {
1686         DBG("");
1687
1688         if (connection == NULL)
1689                 return;
1690
1691         connman_notifier_unregister(&session_notifier);
1692
1693         g_hash_table_foreach(session_hash, release_session, NULL);
1694         g_hash_table_destroy(session_hash);
1695
1696         dbus_connection_unref(connection);
1697 }