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