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 void test_and_disconnect(struct connman_session *session)
 757 {
 758         struct session_info *info = session->info;
 759         struct connman_service *service;
 760         connman_bool_t disconnect;
 761
 762         if (info->entry == NULL)
 763                 return;
 764
 765         disconnect = explicit_disconnect(session);
 766
 767         info->online = FALSE;
 768         info->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 769         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 770
 771         service = info->entry->service;
 772         info->entry = NULL;
 773
 774         if (disconnect == TRUE) {
 775                 DBG("disconnect service %p", service);
 776
 777                 /*
 778                  * TODO: We should mark this entry as pending work. In case
 779                  * disconnect fails we just unassign this session from the
 780                  * service and can't do anything later on it
 781                  */
 782                 __connman_service_disconnect(service);
 783         }
 784 }
 785
 786 static void select_and_connect(struct connman_session *session,
 787                                 enum connman_session_reason reason)
 788 {
 789         struct session_info *info = session->info;
 790         struct service_entry *entry = NULL;
 791         GSequenceIter *iter;
 792         connman_bool_t do_connect = FALSE;
 793
 794         DBG("session %p reason %s", session, reason2string(reason));
 795
 796         info->reason = reason;
 797
 798         iter = g_sequence_get_begin_iter(session->service_list);
 799
 800         while (g_sequence_iter_is_end(iter) == FALSE) {
 801                 entry = g_sequence_get(iter);
 802
 803                 switch (entry->state) {
 804                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 805                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 806                 case CONNMAN_SERVICE_STATE_READY:
 807                 case CONNMAN_SERVICE_STATE_ONLINE:
 808                         /* connecting or connected */
 809                         break;
 810                 case CONNMAN_SERVICE_STATE_IDLE:
 811                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 812                         if (explicit_connect(reason) == TRUE)
 813                                 do_connect = TRUE;
 814                         break;
 815                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 816                 case CONNMAN_SERVICE_STATE_FAILURE:
 817                         entry = NULL;
 818                         break;
 819                 }
 820
 821                 if (entry != NULL)
 822                         break;
 823
 824                 iter = g_sequence_iter_next(iter);
 825         }
 826
 827         if (info->entry != NULL && info->entry != entry)
 828                 test_and_disconnect(session);
 829
 830         if (entry == NULL) {
 831                 info->entry = NULL;
 832                 return;
 833         }
 834
 835         info->entry = entry;
 836         info->entry->reason = reason;
 837
 838         if (do_connect == TRUE) {
 839                 __connman_service_session_inc(info->entry->service);
 840                 __connman_service_connect(info->entry->service);
 841         } else if (reason == CONNMAN_SESSION_REASON_CONNECT) {
 842                 /* session is already online take ref */
 843                 __connman_service_session_inc(info->entry->service);
 844         }
 845
 846         info->online = is_online(entry->state);
 847 }
 848
 849 static void session_changed(struct connman_session *session,
 850                                 enum connman_session_trigger trigger)
 851 {
 852         struct session_info *info = session->info;
 853         struct session_info *info_last = session->info_last;
 854         GSequenceIter *iter;
 855
 856         /*
 857          * TODO: This only a placeholder for the 'real' algorithm to
 858          * play a bit around. So we are going to improve it step by step.
 859          */
 860
 861         DBG("session %p trigger %s", session, trigger2string(trigger));
 862
 863         switch (trigger) {
 864         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 865                 DBG("ignore session changed event");
 866                 return;
 867         case CONNMAN_SESSION_TRIGGER_SETTING:
 868                 if (info->entry != NULL) {
 869                         iter = g_hash_table_lookup(session->service_hash,
 870                                                         info->entry->service);
 871                         if (iter == NULL) {
 872                                 /*
 873                                  * This service is not part of this
 874                                  * session anymore.
 875                                  */
 876                                 test_and_disconnect(session);
 877                         }
 878                 }
 879
 880                 if (info->online == FALSE) {
 881                         select_and_connect(session,
 882                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 883                 }
 884
 885                 break;
 886         case CONNMAN_SESSION_TRIGGER_CONNECT:
 887                 if (info->online == TRUE) {
 888                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
 889                                 break;
 890                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 891                         __connman_service_session_inc(info->entry->service);
 892                         break;
 893                 }
 894
 895                 select_and_connect(session,
 896                                 CONNMAN_SESSION_REASON_CONNECT);
 897
 898                 break;
 899         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 900                 test_and_disconnect(session);
 901
 902                 break;
 903         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 904                 if (info->online == TRUE) {
 905                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 906                         __connman_service_session_inc(info->entry->service);
 907                         break;
 908                 }
 909
 910                 select_and_connect(session,
 911                                 CONNMAN_SESSION_REASON_PERIODIC);
 912
 913                 break;
 914         case CONNMAN_SESSION_TRIGGER_SERVICE:
 915                 switch (info->reason) {
 916                 case CONNMAN_SESSION_REASON_CONNECT:
 917                         if (info->entry != NULL &&
 918                                         (is_connecting(info->entry->state) == TRUE ||
 919                                         is_online(info->entry->state) == TRUE)) {
 920                                 break;
 921                         }
 922
 923                         /*
 924                          * We are not online, we are not connecting, that
 925                          * means we could still have a valid info->entry.
 926                          * Though something has changed from the service layer.
 927                          * Therefore we want to restart the algorithm. Before we
 928                          * can do that we have to cleanup a potientional old entry.
 929                          */
 930                         test_and_disconnect(session);
 931                         info->reason = CONNMAN_SESSION_REASON_CONNECT; /* restore value */
 932
 933                         DBG("Retry to find a matching session");
 934                         /*
 935                          * The user called Connect() but there was no
 936                          * matching session available at this point.
 937                          * Now there might be a new one. Let's retry
 938                          * to select and connect
 939                          */
 940                         select_and_connect(session,
 941                                         CONNMAN_SESSION_REASON_CONNECT);
 942                         break;
 943                 case CONNMAN_SESSION_REASON_PERIODIC:
 944                 case CONNMAN_SESSION_REASON_FREE_RIDE:
 945                         if (info->stay_connected == TRUE) {
 946                                 DBG("StayConnected");
 947                                 select_and_connect(session,
 948                                         CONNMAN_SESSION_REASON_CONNECT);
 949                         } else {
 950                                 select_and_connect(session,
 951                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 952                         }
 953                         break;
 954                 case CONNMAN_SESSION_REASON_UNKNOWN:
 955                         break;
 956                 }
 957                 break;
 958         case CONNMAN_SESSION_TRIGGER_ECALL:
 959                 if (info->online == FALSE && info->entry->service != NULL)
 960                         test_and_disconnect(session);
 961
 962                 break;
 963         }
 964
 965         if (info->entry != info_last->entry)
 966                 session->info_dirty = TRUE;
 967
 968         session_notify(session);
 969 }
 970
 971 static DBusMessage *connect_session(DBusConnection *conn,
 972                                         DBusMessage *msg, void *user_data)
 973 {
 974         struct connman_session *session = user_data;
 975
 976         DBG("session %p", session);
 977
 978         if (ecall_session != NULL && ecall_session != session)
 979                 return __connman_error_failed(msg, EBUSY);
 980
 981         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
 982
 983         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 984 }
 985
 986 static DBusMessage *disconnect_session(DBusConnection *conn,
 987                                         DBusMessage *msg, void *user_data)
 988 {
 989         struct connman_session *session = user_data;
 990
 991         DBG("session %p", session);
 992
 993         if (ecall_session != NULL && ecall_session != session)
 994                 return __connman_error_failed(msg, EBUSY);
 995
 996         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
 997
 998         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 999 }
1000
1001 static struct service_entry *create_service_entry(struct connman_service *service,
1002                                         const char *name,
1003                                         enum connman_service_state state)
1004 {
1005         struct service_entry *entry;
1006         enum connman_service_type type;
1007         int idx;
1008
1009         entry = g_try_new0(struct service_entry, 1);
1010         if (entry == NULL)
1011                 return entry;
1012
1013         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
1014         entry->state = state;
1015         if (name != NULL)
1016                 entry->name = name;
1017         else
1018                 entry->name = "";
1019         entry->service = service;
1020
1021         idx = __connman_service_get_index(entry->service);
1022         entry->ifname = connman_inet_ifname(idx);
1023         if (entry->ifname == NULL)
1024                 entry->ifname = g_strdup("");
1025
1026         type = connman_service_get_type(entry->service);
1027         entry->bearer = service2bearer(type);
1028
1029         return entry;
1030 }
1031
1032 static void destroy_service_entry(gpointer data)
1033 {
1034         struct service_entry *entry = data;
1035
1036         g_free(entry->ifname);
1037
1038         g_free(entry);
1039 }
1040
1041 static void update_allowed_bearers(struct connman_session *session)
1042 {
1043         struct service_entry *entry;
1044         GSequenceIter *iter;
1045
1046         if (session->service_list != NULL) {
1047                 g_hash_table_remove_all(session->service_hash);
1048                 g_sequence_free(session->service_list);
1049         }
1050
1051         session->service_list = __connman_service_get_list(session,
1052                                                         service_match,
1053                                                         create_service_entry,
1054                                                         destroy_service_entry);
1055
1056         g_sequence_sort(session->service_list, sort_services, session);
1057
1058         iter = g_sequence_get_begin_iter(session->service_list);
1059
1060         while (g_sequence_iter_is_end(iter) == FALSE) {
1061                 entry = g_sequence_get(iter);
1062
1063                 DBG("service %p type %s name %s", entry->service,
1064                         service2bearer(connman_service_get_type(entry->service)),
1065                         entry->name);
1066
1067                 g_hash_table_replace(session->service_hash,
1068                                         entry->service, iter);
1069
1070                 iter = g_sequence_iter_next(iter);
1071         }
1072
1073         session->info_dirty = TRUE;
1074 }
1075
1076 static void update_ecall_sessions(struct connman_session *session)
1077 {
1078         struct session_info *info = session->info;
1079         struct connman_session *session_iter;
1080         GHashTableIter iter;
1081         gpointer key, value;
1082
1083         g_hash_table_iter_init(&iter, session_hash);
1084
1085         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1086                 session_iter = value;
1087
1088                 if (session_iter == session)
1089                         continue;
1090
1091                 session_iter->info->ecall = info->ecall;
1092                 session_iter->info_dirty = TRUE;
1093
1094                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1095         }
1096 }
1097
1098 static void update_ecall(struct connman_session *session)
1099 {
1100         struct session_info *info = session->info;
1101         struct session_info *info_last = session->info_last;
1102
1103         DBG("session %p ecall_session %p ecall %d -> %d", session,
1104                 ecall_session, info_last->ecall, info->ecall);
1105
1106         if (ecall_session == NULL) {
1107                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1108                         goto err;
1109
1110                 ecall_session = session;
1111         } else if (ecall_session == session) {
1112                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1113                         goto err;
1114
1115                 ecall_session = NULL;
1116         } else {
1117                 goto err;
1118         }
1119
1120         update_ecall_sessions(session);
1121
1122         session->info_dirty = TRUE;
1123         return;
1124
1125 err:
1126         /* not a valid transition */
1127         info->ecall = info_last->ecall;
1128 }
1129
1130 static DBusMessage *change_session(DBusConnection *conn,
1131                                         DBusMessage *msg, void *user_data)
1132 {
1133         struct connman_session *session = user_data;
1134         struct session_info *info = session->info;
1135         struct session_info *info_last = session->info_last;
1136         DBusMessageIter iter, value;
1137         const char *name;
1138         GSList *allowed_bearers;
1139
1140         DBG("session %p", session);
1141         if (dbus_message_iter_init(msg, &iter) == FALSE)
1142                 return __connman_error_invalid_arguments(msg);
1143
1144         dbus_message_iter_get_basic(&iter, &name);
1145         dbus_message_iter_next(&iter);
1146         dbus_message_iter_recurse(&iter, &value);
1147
1148         switch (dbus_message_iter_get_arg_type(&value)) {
1149         case DBUS_TYPE_ARRAY:
1150                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1151                         allowed_bearers = session_parse_allowed_bearers(&value);
1152
1153                         g_slist_foreach(info->allowed_bearers,
1154                                         cleanup_bearer_info, NULL);
1155                         g_slist_free(info->allowed_bearers);
1156
1157                         if (allowed_bearers == NULL) {
1158                                 allowed_bearers = session_allowed_bearers_any();
1159
1160                                 if (allowed_bearers == NULL)
1161                                         return __connman_error_failed(msg, ENOMEM);
1162                         }
1163
1164                         info->allowed_bearers = allowed_bearers;
1165
1166                         update_allowed_bearers(session);
1167                 } else {
1168                         goto err;
1169                 }
1170                 break;
1171         case DBUS_TYPE_BOOLEAN:
1172                 if (g_str_equal(name, "Priority") == TRUE) {
1173                         dbus_message_iter_get_basic(&value,
1174                                         &info->priority);
1175
1176                         if (info_last->priority != info->priority)
1177                                 session->info_dirty = TRUE;
1178                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1179                         dbus_message_iter_get_basic(&value,
1180                                         &info->avoid_handover);
1181
1182                         if (info_last->avoid_handover != info->avoid_handover)
1183                                 session->info_dirty = TRUE;
1184                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1185                         dbus_message_iter_get_basic(&value,
1186                                         &info->stay_connected);
1187
1188                         if (info_last->stay_connected != info->stay_connected)
1189                                 session->info_dirty = TRUE;
1190                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1191                         dbus_message_iter_get_basic(&value,
1192                                         &info->ecall);
1193
1194                         update_ecall(session);
1195                 } else {
1196                         goto err;
1197                 }
1198                 break;
1199         case DBUS_TYPE_UINT32:
1200                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1201                         dbus_message_iter_get_basic(&value,
1202                                         &info->periodic_connect);
1203
1204                         if (info_last->periodic_connect != info->periodic_connect)
1205                                 session->info_dirty = TRUE;
1206                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1207                         dbus_message_iter_get_basic(&value,
1208                                         &info->idle_timeout);
1209
1210                         if (info_last->idle_timeout != info->idle_timeout)
1211                                 session->info_dirty = TRUE;
1212                 } else {
1213                         goto err;
1214                 }
1215                 break;
1216         case DBUS_TYPE_STRING:
1217                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1218                         const char *val;
1219                         dbus_message_iter_get_basic(&value, &val);
1220                         info->roaming_policy =
1221                                         string2roamingpolicy(val);
1222
1223                         if (info_last->roaming_policy != info->roaming_policy)
1224                                 session->info_dirty = TRUE;
1225                 } else {
1226                         goto err;
1227                 }
1228                 break;
1229         default:
1230                 goto err;
1231         }
1232
1233         if (session->info_dirty == TRUE)
1234                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1235
1236         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1237
1238 err:
1239         return __connman_error_invalid_arguments(msg);
1240 }
1241
1242 static void release_session(gpointer key, gpointer value, gpointer user_data)
1243 {
1244         struct connman_session *session = value;
1245         DBusMessage *message;
1246
1247         DBG("owner %s path %s", session->owner, session->notify_path);
1248
1249         if (session->notify_watch > 0)
1250                 g_dbus_remove_watch(connection, session->notify_watch);
1251
1252         g_dbus_unregister_interface(connection, session->session_path,
1253                                                 CONNMAN_SESSION_INTERFACE);
1254
1255         message = dbus_message_new_method_call(session->owner,
1256                                                 session->notify_path,
1257                                                 CONNMAN_NOTIFICATION_INTERFACE,
1258                                                 "Release");
1259         if (message == NULL)
1260                 return;
1261
1262         dbus_message_set_no_reply(message, TRUE);
1263
1264         g_dbus_send_message(connection, message);
1265 }
1266
1267 static int session_disconnect(struct connman_session *session)
1268 {
1269         DBG("session %p, %s", session, session->owner);
1270
1271         if (session->notify_watch > 0)
1272                 g_dbus_remove_watch(connection, session->notify_watch);
1273
1274         g_dbus_unregister_interface(connection, session->session_path,
1275                                                 CONNMAN_SESSION_INTERFACE);
1276
1277         test_and_disconnect(session);
1278
1279         g_hash_table_remove(session_hash, session->session_path);
1280
1281         return 0;
1282 }
1283
1284 static void owner_disconnect(DBusConnection *conn, void *user_data)
1285 {
1286         struct connman_session *session = user_data;
1287
1288         DBG("session %p, %s died", session, session->owner);
1289
1290         session_disconnect(session);
1291 }
1292
1293 static DBusMessage *destroy_session(DBusConnection *conn,
1294                                         DBusMessage *msg, void *user_data)
1295 {
1296         struct connman_session *session = user_data;
1297
1298         DBG("session %p", session);
1299
1300         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1301 }
1302
1303 static GDBusMethodTable session_methods[] = {
1304         { "Destroy",    "",   "", destroy_session    },
1305         { "Connect",    "",   "", connect_session    },
1306         { "Disconnect", "",   "", disconnect_session },
1307         { "Change",     "sv", "", change_session     },
1308         { },
1309 };
1310
1311 int __connman_session_create(DBusMessage *msg)
1312 {
1313         const char *owner, *notify_path;
1314         char *session_path = NULL;
1315         DBusMessageIter iter, array;
1316         struct connman_session *session = NULL;
1317         struct session_info *info, *info_last;
1318
1319         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1320         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1321         enum connman_session_roaming_policy roaming_policy =
1322                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1323         GSList *allowed_bearers = NULL;
1324         unsigned int periodic_connect = 0;
1325         unsigned int idle_timeout = 0;
1326
1327         int err;
1328
1329         owner = dbus_message_get_sender(msg);
1330
1331         DBG("owner %s", owner);
1332
1333         if (ecall_session != NULL) {
1334                 /*
1335                  * If there is an emergency call already going on,
1336                  * ignore session creation attempt
1337                  */
1338                 err = -EBUSY;
1339                 goto err;
1340         }
1341
1342         dbus_message_iter_init(msg, &iter);
1343         dbus_message_iter_recurse(&iter, &array);
1344
1345         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1346                 DBusMessageIter entry, value;
1347                 const char *key, *val;
1348
1349                 dbus_message_iter_recurse(&array, &entry);
1350                 dbus_message_iter_get_basic(&entry, &key);
1351
1352                 dbus_message_iter_next(&entry);
1353                 dbus_message_iter_recurse(&entry, &value);
1354
1355                 switch (dbus_message_iter_get_arg_type(&value)) {
1356                 case DBUS_TYPE_ARRAY:
1357                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1358                                 allowed_bearers =
1359                                         session_parse_allowed_bearers(&value);
1360                         } else {
1361                                 return -EINVAL;
1362                         }
1363                         break;
1364                 case DBUS_TYPE_BOOLEAN:
1365                         if (g_str_equal(key, "Priority") == TRUE) {
1366                                 dbus_message_iter_get_basic(&value,
1367                                                         &priority);
1368                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1369                                 dbus_message_iter_get_basic(&value,
1370                                                         &avoid_handover);
1371                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1372                                 dbus_message_iter_get_basic(&value,
1373                                                         &stay_connected);
1374                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1375                                 dbus_message_iter_get_basic(&value,
1376                                                         &ecall);
1377                         } else {
1378                                 return -EINVAL;
1379                         }
1380                         break;
1381                 case DBUS_TYPE_UINT32:
1382                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1383                                 dbus_message_iter_get_basic(&value,
1384                                                         &periodic_connect);
1385                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1386                                 dbus_message_iter_get_basic(&value,
1387                                                         &idle_timeout);
1388                         } else {
1389                                 return -EINVAL;
1390                         }
1391                         break;
1392                 case DBUS_TYPE_STRING:
1393                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1394                                 dbus_message_iter_get_basic(&value, &val);
1395                                 roaming_policy = string2roamingpolicy(val);
1396                         } else {
1397                                 return -EINVAL;
1398                         }
1399                 }
1400                 dbus_message_iter_next(&array);
1401         }
1402
1403         dbus_message_iter_next(&iter);
1404         dbus_message_iter_get_basic(&iter, &notify_path);
1405
1406         if (notify_path == NULL) {
1407                 err = -EINVAL;
1408                 goto err;
1409         }
1410
1411         session_path = g_strdup_printf("/sessions%s", notify_path);
1412         if (session_path == NULL) {
1413                 err = -ENOMEM;
1414                 goto err;
1415         }
1416
1417         session = g_hash_table_lookup(session_hash, session_path);
1418         if (session != NULL) {
1419                 session = NULL;
1420                 err = -EEXIST;
1421                 goto err;
1422         }
1423
1424         session = g_try_new0(struct connman_session, 1);
1425         if (session == NULL) {
1426                 err = -ENOMEM;
1427                 goto err;
1428         }
1429
1430         session->info = g_try_new0(struct session_info, 1);
1431         if (session->info == NULL) {
1432                 err = -ENOMEM;
1433                 goto err;
1434         }
1435
1436         session->info_last = g_try_new0(struct session_info, 1);
1437         if (session->info_last == NULL) {
1438                 err = -ENOMEM;
1439                 goto err;
1440         }
1441
1442         info = session->info;
1443         info_last = session->info_last;
1444
1445         session->owner = g_strdup(owner);
1446         session->session_path = session_path;
1447         session->notify_path = g_strdup(notify_path);
1448         session->notify_watch =
1449                 g_dbus_add_disconnect_watch(connection, session->owner,
1450                                         owner_disconnect, session, NULL);
1451
1452         session->service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1453                                                 NULL, NULL);
1454
1455         info->online = FALSE;
1456         info->priority = priority;
1457         info->avoid_handover = avoid_handover;
1458         info->stay_connected = stay_connected;
1459         info->periodic_connect = periodic_connect;
1460         info->idle_timeout = idle_timeout;
1461         info->ecall = ecall;
1462         info->roaming_policy = roaming_policy;
1463         info->entry = NULL;
1464         info->marker = 0;
1465
1466         if (allowed_bearers == NULL) {
1467                 info->allowed_bearers =
1468                                 session_allowed_bearers_any();
1469
1470                 if (info->allowed_bearers == NULL) {
1471                         err = -ENOMEM;
1472                         goto err;
1473                 }
1474         } else {
1475                 info->allowed_bearers = allowed_bearers;
1476         }
1477
1478         g_hash_table_replace(session_hash, session->session_path, session);
1479
1480         DBG("add %s", session->session_path);
1481
1482         if (g_dbus_register_interface(connection, session->session_path,
1483                                         CONNMAN_SESSION_INTERFACE,
1484                                         session_methods, NULL,
1485                                         NULL, session, NULL) == FALSE) {
1486                 connman_error("Failed to register %s", session->session_path);
1487                 g_hash_table_remove(session_hash, session->session_path);
1488                 session = NULL;
1489
1490                 err = -EINVAL;
1491                 goto err;
1492         }
1493
1494         g_dbus_send_reply(connection, msg,
1495                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1496                                 DBUS_TYPE_INVALID);
1497
1498
1499         update_allowed_bearers(session);
1500         if (info->ecall == TRUE) {
1501                 ecall_session = session;
1502                 update_ecall_sessions(session);
1503         }
1504
1505         info_last->online = info->online;
1506         info_last->priority = info->priority;
1507         info_last->avoid_handover = info->avoid_handover;
1508         info_last->stay_connected = info->stay_connected;
1509         info_last->periodic_connect = info->periodic_connect;
1510         info_last->idle_timeout = info->idle_timeout;
1511         info_last->ecall = info->ecall;
1512         info_last->roaming_policy = info->roaming_policy;
1513         info_last->entry = info->entry;
1514         info_last->marker = info->marker;
1515         info_last->allowed_bearers = info->allowed_bearers;
1516
1517         session->info_dirty = TRUE;
1518         session->append_all = TRUE;
1519
1520         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1521
1522         return 0;
1523
1524 err:
1525         connman_error("Failed to create session");
1526
1527         if (session != NULL) {
1528                 if (session->info_last != NULL)
1529                         g_free(session->info_last);
1530                 if (session->info != NULL)
1531                         g_free(session->info);
1532                 g_free(session);
1533         }
1534
1535         g_free(session_path);
1536
1537         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1538         g_slist_free(allowed_bearers);
1539
1540         return err;
1541 }
1542
1543 int __connman_session_destroy(DBusMessage *msg)
1544 {
1545         const char *owner, *session_path;
1546         struct connman_session *session;
1547
1548         owner = dbus_message_get_sender(msg);
1549
1550         DBG("owner %s", owner);
1551
1552         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1553                                                         DBUS_TYPE_INVALID);
1554         if (session_path == NULL)
1555                 return -EINVAL;
1556
1557         session = g_hash_table_lookup(session_hash, session_path);
1558         if (session == NULL)
1559                 return -EINVAL;
1560
1561         if (g_strcmp0(owner, session->owner) != 0)
1562                 return -EACCES;
1563
1564         session_disconnect(session);
1565
1566         return 0;
1567 }
1568
1569 connman_bool_t __connman_session_mode()
1570 {
1571         return sessionmode;
1572 }
1573
1574 void __connman_session_set_mode(connman_bool_t enable)
1575 {
1576         DBG("enable %d", enable);
1577
1578         sessionmode = enable;
1579
1580         if (sessionmode == TRUE)
1581                 __connman_service_disconnect_all();
1582 }
1583
1584 static void service_add(struct connman_service *service,
1585                         const char *name)
1586 {
1587         GHashTableIter iter;
1588         GSequenceIter *iter_service_list;
1589         gpointer key, value;
1590         struct connman_session *session;
1591         struct service_entry *entry;
1592
1593         DBG("service %p", service);
1594
1595         g_hash_table_iter_init(&iter, session_hash);
1596
1597         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1598                 session = value;
1599
1600                 if (service_match(session, service) == FALSE)
1601                         continue;
1602
1603                 entry = create_service_entry(service, name,
1604                                                 CONNMAN_SERVICE_STATE_IDLE);
1605                 if (entry == NULL)
1606                         continue;
1607
1608                 iter_service_list =
1609                         g_sequence_insert_sorted(session->service_list,
1610                                                         entry, sort_services,
1611                                                         session);
1612
1613                 g_hash_table_replace(session->service_hash, service,
1614                                         iter_service_list);
1615
1616                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1617         }
1618 }
1619
1620 static void service_remove(struct connman_service *service)
1621 {
1622
1623         GHashTableIter iter;
1624         gpointer key, value;
1625         struct connman_session *session;
1626         struct session_info *info;
1627
1628         DBG("service %p", service);
1629
1630         g_hash_table_iter_init(&iter, session_hash);
1631
1632         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1633                 GSequenceIter *iter;
1634                 session = value;
1635                 info = session->info;
1636
1637                 iter = g_hash_table_lookup(session->service_hash, service);
1638                 if (iter == NULL)
1639                         continue;
1640
1641                 g_sequence_remove(iter);
1642
1643                 if (info->entry != NULL && info->entry->service == service)
1644                         info->entry = NULL;
1645                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1646         }
1647 }
1648
1649 static void service_state_changed(struct connman_service *service,
1650                                         enum connman_service_state state)
1651 {
1652         GHashTableIter iter;
1653         gpointer key, value;
1654         struct connman_session *session;
1655         struct session_info *info, *info_last;
1656
1657         DBG("service %p state %d", service, state);
1658
1659         g_hash_table_iter_init(&iter, session_hash);
1660
1661         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1662                 GSequenceIter *service_iter;
1663
1664                 session = value;
1665                 info = session->info;
1666                 info_last = session->info_last;
1667
1668                 service_iter = g_hash_table_lookup(session->service_hash, service);
1669                 if (service_iter != NULL) {
1670                         struct service_entry *entry;
1671
1672                         entry = g_sequence_get(service_iter);
1673                         entry->state = state;
1674
1675                         if (info->entry == entry) {
1676                                 info->online = is_online(entry->state);
1677                                 if (info_last->online != info->online)
1678                                         session->info_dirty = TRUE;
1679                         }
1680                 }
1681
1682                 session_changed(session,
1683                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1684         }
1685 }
1686
1687 static void ipconfig_changed(struct connman_service *service,
1688                                 struct connman_ipconfig *ipconfig)
1689 {
1690         GHashTableIter iter;
1691         gpointer key, value;
1692         struct connman_session *session;
1693         struct session_info *info;
1694         enum connman_ipconfig_type type;
1695
1696         DBG("service %p ipconfig %p", service, ipconfig);
1697
1698         type = __connman_ipconfig_get_config_type(ipconfig);
1699
1700         g_hash_table_iter_init(&iter, session_hash);
1701
1702         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1703                 session = value;
1704                 info = session->info;
1705
1706                 if (info->entry != NULL && info->entry->service == service) {
1707                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1708                                 ipconfig_ipv4_changed(session);
1709                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1710                                 ipconfig_ipv6_changed(session);
1711                 }
1712         }
1713 }
1714
1715 static struct connman_notifier session_notifier = {
1716         .name                   = "session",
1717         .service_add            = service_add,
1718         .service_remove         = service_remove,
1719         .service_state_changed  = service_state_changed,
1720         .ipconfig_changed       = ipconfig_changed,
1721 };
1722
1723 int __connman_session_init(void)
1724 {
1725         int err;
1726
1727         DBG("");
1728
1729         connection = connman_dbus_get_connection();
1730         if (connection == NULL)
1731                 return -1;
1732
1733         err = connman_notifier_register(&session_notifier);
1734         if (err < 0) {
1735                 dbus_connection_unref(connection);
1736                 return err;
1737         }
1738
1739         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1740                                                 NULL, cleanup_session);
1741
1742         sessionmode = FALSE;
1743         return 0;
1744 }
1745
1746 void __connman_session_cleanup(void)
1747 {
1748         DBG("");
1749
1750         if (connection == NULL)
1751                 return;
1752
1753         connman_notifier_unregister(&session_notifier);
1754
1755         g_hash_table_foreach(session_hash, release_session, NULL);
1756         g_hash_table_destroy(session_hash);
1757         session_hash = NULL;
1758
1759         dbus_connection_unref(connection);
1760 }