src/session.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2011  BWM CarIT GmbH. All rights reserved.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <errno.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34 static GHashTable *session_hash;
  35 static connman_bool_t sessionmode;
  36 static struct session_info *ecall_info;
  37
  38 enum connman_session_trigger {
  39         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  40         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  41         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  42         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  43         CONNMAN_SESSION_TRIGGER_PERIODIC        = 4,
  44         CONNMAN_SESSION_TRIGGER_SERVICE         = 5,
  45         CONNMAN_SESSION_TRIGGER_ECALL           = 6,
  46 };
  47
  48 enum connman_session_reason {
  49         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  50         CONNMAN_SESSION_REASON_CONNECT          = 1,
  51         CONNMAN_SESSION_REASON_DISCONNECT       = 2,
  52         CONNMAN_SESSION_REASON_FREE_RIDE        = 3,
  53         CONNMAN_SESSION_REASON_PERIODIC         = 4,
  54 };
  55
  56 enum connman_session_roaming_policy {
  57         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  58         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  59         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  60         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  61         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  62         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  63 };
  64
  65 struct service_entry {
  66         /* track why this service was selected */
  67         enum connman_session_reason reason;
  68         enum connman_service_state state;
  69         const char *name;
  70         struct connman_service *service;
  71         char *ifname;
  72         const char *bearer;
  73 };
  74
  75 struct session_info {
  76         connman_bool_t online;
  77         connman_bool_t priority;
  78         GSList *allowed_bearers;
  79         connman_bool_t avoid_handover;
  80         connman_bool_t stay_connected;
  81         unsigned int periodic_connect;
  82         unsigned int idle_timeout;
  83         connman_bool_t ecall;
  84         enum connman_session_roaming_policy roaming_policy;
  85         unsigned int marker;
  86
  87         struct service_entry *entry;
  88         enum connman_session_reason reason;
  89 };
  90
  91 struct connman_session {
  92         char *owner;
  93         char *session_path;
  94         char *notify_path;
  95         guint notify_watch;
  96
  97         connman_bool_t append_all;
  98         connman_bool_t info_dirty;
  99         struct session_info *info;
 100         struct session_info *info_last;
 101
 102         GSequence *service_list;
 103         GHashTable *service_hash;
 104 };
 105
 106 struct bearer_info {
 107         char *name;
 108         connman_bool_t match_all;
 109         enum connman_service_type service_type;
 110 };
 111
 112 static const char *trigger2string(enum connman_session_trigger trigger)
 113 {
 114         switch (trigger) {
 115         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 116                 break;
 117         case CONNMAN_SESSION_TRIGGER_SETTING:
 118                 return "setting";
 119         case CONNMAN_SESSION_TRIGGER_CONNECT:
 120                 return "connect";
 121         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 122                 return "disconnect";
 123         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 124                 return "periodic";
 125         case CONNMAN_SESSION_TRIGGER_SERVICE:
 126                 return "service";
 127         case CONNMAN_SESSION_TRIGGER_ECALL:
 128                 return "ecall";
 129         }
 130
 131         return NULL;
 132 }
 133
 134 static const char *reason2string(enum connman_session_reason reason)
 135 {
 136         switch (reason) {
 137         case CONNMAN_SESSION_REASON_UNKNOWN:
 138                 return "unknown";
 139         case CONNMAN_SESSION_REASON_CONNECT:
 140                 return "connect";
 141         case CONNMAN_SESSION_REASON_DISCONNECT:
 142                 return "disconnect";
 143         case CONNMAN_SESSION_REASON_FREE_RIDE:
 144                 return "free-ride";
 145         case CONNMAN_SESSION_REASON_PERIODIC:
 146                 return "periodic";
 147         }
 148
 149         return NULL;
 150 }
 151
 152 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 153 {
 154         switch (policy) {
 155         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 156                 return "unknown";
 157         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 158                 return "default";
 159         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 160                 return "always";
 161         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 162                 return "forbidden";
 163         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 164                 return "national";
 165         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 166                 return "international";
 167         }
 168
 169         return NULL;
 170 }
 171
 172 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 173 {
 174         if (g_strcmp0(policy, "default") == 0)
 175                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 176         else if (g_strcmp0(policy, "always") == 0)
 177                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 178         else if (g_strcmp0(policy, "forbidden") == 0)
 179                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 180         else if (g_strcmp0(policy, "national") == 0)
 181                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 182         else if (g_strcmp0(policy, "international") == 0)
 183                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 184         else
 185                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 186 }
 187
 188 static enum connman_service_type bearer2service(const char *bearer)
 189 {
 190         if (bearer == NULL)
 191                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 192
 193         if (g_strcmp0(bearer, "ethernet") == 0)
 194                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 195         else if (g_strcmp0(bearer, "wifi") == 0)
 196                 return CONNMAN_SERVICE_TYPE_WIFI;
 197         else if (g_strcmp0(bearer, "wimax") == 0)
 198                 return CONNMAN_SERVICE_TYPE_WIMAX;
 199         else if (g_strcmp0(bearer, "bluetooth") == 0)
 200                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 201         else if (g_strcmp0(bearer, "3g") == 0)
 202                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 203         else if (g_strcmp0(bearer, "vpn") == 0)
 204                 return CONNMAN_SERVICE_TYPE_VPN;
 205         else
 206                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 207 }
 208
 209 static char *service2bearer(enum connman_service_type type)
 210 {
 211         switch (type) {
 212         case CONNMAN_SERVICE_TYPE_ETHERNET:
 213                 return "ethernet";
 214         case CONNMAN_SERVICE_TYPE_WIFI:
 215                 return "wifi";
 216         case CONNMAN_SERVICE_TYPE_WIMAX:
 217                 return "wimax";
 218         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 219                 return "bluetooth";
 220         case CONNMAN_SERVICE_TYPE_CELLULAR:
 221                 return "3g";
 222         case CONNMAN_SERVICE_TYPE_VPN:
 223                 return "vpn";
 224         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 225         case CONNMAN_SERVICE_TYPE_SYSTEM:
 226         case CONNMAN_SERVICE_TYPE_GPS:
 227         case CONNMAN_SERVICE_TYPE_GADGET:
 228                 return "";
 229         }
 230
 231         return "";
 232 }
 233
 234 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 235 {
 236         struct bearer_info *info = data;
 237
 238         g_free(info->name);
 239         g_free(info);
 240 }
 241
 242 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 243 {
 244         struct bearer_info *info;
 245         DBusMessageIter array;
 246         GSList *list = NULL;
 247
 248         dbus_message_iter_recurse(iter, &array);
 249
 250         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 251                 char *bearer = NULL;
 252
 253                 dbus_message_iter_get_basic(&array, &bearer);
 254
 255                 info = g_try_new0(struct bearer_info, 1);
 256                 if (info == NULL) {
 257                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 258                         g_slist_free(list);
 259
 260                         return NULL;
 261                 }
 262
 263                 info->name = g_strdup(bearer);
 264                 info->service_type = bearer2service(info->name);
 265
 266                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 267                                 g_strcmp0(info->name, "*") == 0) {
 268                         info->match_all = TRUE;
 269                 } else {
 270                         info->match_all = FALSE;
 271                 }
 272
 273                 list = g_slist_append(list, info);
 274
 275                 dbus_message_iter_next(&array);
 276         }
 277
 278         return list;
 279 }
 280
 281 static GSList *session_allowed_bearers_any(void)
 282 {
 283         struct bearer_info *info;
 284         GSList *list = NULL;
 285
 286         info = g_try_new0(struct bearer_info, 1);
 287         if (info == NULL) {
 288                 g_slist_free(list);
 289
 290                 return NULL;
 291         }
 292
 293         info->name = g_strdup("");
 294         info->match_all = TRUE;
 295         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 296
 297         list = g_slist_append(list, info);
 298
 299         return list;
 300 }
 301
 302 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 303 {
 304         struct session_info *info = user_data;
 305         GSList *list;
 306
 307         for (list = info->allowed_bearers;
 308                         list != NULL; list = list->next) {
 309                 struct bearer_info *info = list->data;
 310
 311                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 312                                                 &info->name);
 313         }
 314 }
 315
 316 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 317 {
 318         struct connman_service *service = user_data;
 319         struct connman_ipconfig *ipconfig_ipv4;
 320
 321         if (service == NULL)
 322                 return;
 323
 324         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 325         if (ipconfig_ipv4 == NULL)
 326                 return;
 327
 328         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 329 }
 330
 331 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 332 {
 333         struct connman_service *service = user_data;
 334         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 335
 336         if (service == NULL)
 337                 return;
 338
 339         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 340         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 341         if (ipconfig_ipv6 == NULL)
 342                 return;
 343
 344         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 345 }
 346
 347 static void append_notify(DBusMessageIter *dict,
 348                                         struct connman_session *session)
 349 {
 350         struct session_info *info = session->info;
 351         struct session_info *info_last = session->info_last;
 352         const char *policy;
 353         struct connman_service *service;
 354         const char *name, *ifname, *bearer;
 355
 356         if (session->append_all == TRUE ||
 357                         info->online != info_last->online) {
 358                 connman_dbus_dict_append_basic(dict, "Online",
 359                                                 DBUS_TYPE_BOOLEAN,
 360                                                 &info->online);
 361                 info_last->online = info->online;
 362         }
 363
 364         if (session->append_all == TRUE ||
 365                         info->entry != info_last->entry) {
 366                 if (info->entry == NULL) {
 367                         name = "";
 368                         ifname = "";
 369                         service = NULL;
 370                         bearer = "";
 371                 } else {
 372                         name = info->entry->name;
 373                         ifname = info->entry->ifname;
 374                         service = info->entry->service;
 375                         bearer = info->entry->bearer;
 376                 }
 377
 378                 connman_dbus_dict_append_basic(dict, "Name",
 379                                                 DBUS_TYPE_STRING,
 380                                                 &name);
 381
 382                 connman_dbus_dict_append_dict(dict, "IPv4",
 383                                                 append_ipconfig_ipv4,
 384                                                 service);
 385
 386                 connman_dbus_dict_append_dict(dict, "IPv6",
 387                                                 append_ipconfig_ipv6,
 388                                                 service);
 389
 390                 connman_dbus_dict_append_basic(dict, "Interface",
 391                                                 DBUS_TYPE_STRING,
 392                                                 &ifname);
 393
 394                 connman_dbus_dict_append_basic(dict, "Bearer",
 395                                                 DBUS_TYPE_STRING,
 396                                                 &bearer);
 397
 398                 info_last->entry = info->entry;
 399         }
 400
 401
 402         if (session->append_all == TRUE ||
 403                         info->priority != info_last->priority) {
 404                 connman_dbus_dict_append_basic(dict, "Priority",
 405                                                 DBUS_TYPE_BOOLEAN,
 406                                                 &info->priority);
 407                 info_last->priority = info->priority;
 408         }
 409
 410         if (session->append_all == TRUE ||
 411                         info->allowed_bearers != info_last->allowed_bearers) {
 412                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 413                                                 DBUS_TYPE_STRING,
 414                                                 append_allowed_bearers,
 415                                                 info);
 416                 info_last->allowed_bearers = info->allowed_bearers;
 417         }
 418
 419         if (session->append_all == TRUE ||
 420                         info->avoid_handover != info_last->avoid_handover) {
 421                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 422                                                 DBUS_TYPE_BOOLEAN,
 423                                                 &info->avoid_handover);
 424                 info_last->avoid_handover = info->avoid_handover;
 425         }
 426
 427         if (session->append_all == TRUE ||
 428                         info->stay_connected != info_last->stay_connected) {
 429                 connman_dbus_dict_append_basic(dict, "StayConnected",
 430                                                 DBUS_TYPE_BOOLEAN,
 431                                                 &info->stay_connected);
 432                 info_last->stay_connected = info->stay_connected;
 433         }
 434
 435         if (session->append_all == TRUE ||
 436                         info->periodic_connect != info_last->periodic_connect) {
 437                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 438                                                 DBUS_TYPE_UINT32,
 439                                                 &info->periodic_connect);
 440                 info_last->periodic_connect = info->periodic_connect;
 441         }
 442
 443         if (session->append_all == TRUE ||
 444                         info->idle_timeout != info_last->idle_timeout) {
 445                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 446                                                 DBUS_TYPE_UINT32,
 447                                                 &info->idle_timeout);
 448                 info_last->idle_timeout = info->idle_timeout;
 449         }
 450
 451         if (session->append_all == TRUE ||
 452                         info->ecall != info_last->ecall) {
 453                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 454                                                 DBUS_TYPE_BOOLEAN,
 455                                                 &info->ecall);
 456                 info_last->ecall = info->ecall;
 457         }
 458
 459         if (session->append_all == TRUE ||
 460                         info->roaming_policy != info_last->roaming_policy) {
 461                 policy = roamingpolicy2string(info->roaming_policy);
 462                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 463                                                 DBUS_TYPE_STRING,
 464                                                 &policy);
 465                 info_last->roaming_policy = info->roaming_policy;
 466         }
 467
 468         if (session->append_all == TRUE ||
 469                         info->marker != info_last->marker) {
 470                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 471                                                 DBUS_TYPE_UINT32,
 472                                                 &info->marker);
 473                 info_last->marker = info->marker;
 474         }
 475
 476         session->append_all = FALSE;
 477         session->info_dirty = FALSE;
 478 }
 479
 480 static gboolean session_notify(gpointer user_data)
 481 {
 482         struct connman_session *session = user_data;
 483         DBusMessage *msg;
 484         DBusMessageIter array, dict;
 485
 486         if (session->info_dirty == FALSE)
 487                 return 0;
 488
 489         DBG("session %p owner %s notify_path %s", session,
 490                 session->owner, session->notify_path);
 491
 492         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 493                                                 CONNMAN_NOTIFICATION_INTERFACE,
 494                                                 "Update");
 495         if (msg == NULL)
 496                 return FALSE;
 497
 498         dbus_message_iter_init_append(msg, &array);
 499         connman_dbus_dict_open(&array, &dict);
 500
 501         append_notify(&dict, session);
 502
 503         connman_dbus_dict_close(&array, &dict);
 504
 505         g_dbus_send_message(connection, msg);
 506
 507         session->info_dirty = FALSE;
 508
 509         return FALSE;
 510 }
 511
 512 static void ipconfig_ipv4_changed(struct connman_session *session)
 513 {
 514         struct session_info *info = session->info;
 515
 516         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 517                                                 "IPv4", append_ipconfig_ipv4,
 518                                                 info->entry->service);
 519 }
 520
 521 static void ipconfig_ipv6_changed(struct connman_session *session)
 522 {
 523         struct session_info *info = session->info;
 524
 525         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 526                                                 "IPv6", append_ipconfig_ipv6,
 527                                                 info->entry->service);
 528 }
 529
 530 static connman_bool_t service_type_match(struct connman_session *session,
 531                                         struct connman_service *service)
 532 {
 533         struct session_info *info = session->info;
 534         GSList *list;
 535
 536         for (list = info->allowed_bearers;
 537                         list != NULL; list = list->next) {
 538                 struct bearer_info *info = list->data;
 539                 enum connman_service_type service_type;
 540
 541                 if (info->match_all == TRUE)
 542                         return TRUE;
 543
 544                 service_type = connman_service_get_type(service);
 545                 if (info->service_type == service_type)
 546                         return TRUE;
 547         }
 548
 549         return FALSE;
 550 }
 551
 552 static connman_bool_t service_match(struct connman_session *session,
 553                                         struct connman_service *service)
 554 {
 555         if (service_type_match(session, service) == FALSE)
 556                 return FALSE;
 557
 558         return TRUE;
 559 }
 560
 561 static int service_type_weight(enum connman_service_type type)
 562 {
 563         /*
 564          * The session doesn't care which service
 565          * to use. Nevertheless we have to sort them
 566          * according their type. The ordering is
 567          *
 568          * 1. Ethernet
 569          * 2. Bluetooth
 570          * 3. WiFi/WiMAX
 571          * 4. GSM/UTMS/3G
 572          */
 573
 574         switch (type) {
 575         case CONNMAN_SERVICE_TYPE_ETHERNET:
 576                 return 4;
 577         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 578                 return 3;
 579         case CONNMAN_SERVICE_TYPE_WIFI:
 580         case CONNMAN_SERVICE_TYPE_WIMAX:
 581                 return 2;
 582         case CONNMAN_SERVICE_TYPE_CELLULAR:
 583                 return 1;
 584         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 585         case CONNMAN_SERVICE_TYPE_SYSTEM:
 586         case CONNMAN_SERVICE_TYPE_GPS:
 587         case CONNMAN_SERVICE_TYPE_VPN:
 588         case CONNMAN_SERVICE_TYPE_GADGET:
 589                 break;
 590         }
 591
 592         return 0;
 593 }
 594
 595 static gint sort_allowed_bearers(struct connman_service *service_a,
 596                                         struct connman_service *service_b,
 597                                         struct connman_session *session)
 598 {
 599         struct session_info *info = session->info;
 600         GSList *list;
 601         enum connman_service_type type_a, type_b;
 602         int weight_a, weight_b;
 603
 604         type_a = connman_service_get_type(service_a);
 605         type_b = connman_service_get_type(service_b);
 606
 607         for (list = info->allowed_bearers;
 608                         list != NULL; list = list->next) {
 609                 struct bearer_info *info = list->data;
 610
 611                 if (info->match_all == TRUE) {
 612                         if (type_a != type_b) {
 613                                 weight_a = service_type_weight(type_a);
 614                                 weight_b = service_type_weight(type_b);
 615
 616                                 if (weight_a > weight_b)
 617                                         return -1;
 618
 619                                 if (weight_a < weight_b)
 620                                         return 1;
 621
 622                                 return 0;
 623                         }
 624                 }
 625
 626                 if (type_a == info->service_type &&
 627                                 type_b == info->service_type) {
 628                         return 0;
 629                 }
 630
 631                 if (type_a == info->service_type &&
 632                                 type_b != info->service_type) {
 633                         return -1;
 634                 }
 635
 636                 if (type_a != info->service_type &&
 637                                 type_b == info->service_type) {
 638                         return 1;
 639                 }
 640         }
 641
 642         return 0;
 643 }
 644
 645 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 646 {
 647         struct service_entry *entry_a = (void *)a;
 648         struct service_entry *entry_b = (void *)b;
 649         struct connman_session *session = user_data;
 650
 651         return sort_allowed_bearers(entry_a->service, entry_b->service,
 652                                 session);
 653 }
 654
 655 static void cleanup_session(gpointer user_data)
 656 {
 657         struct connman_session *session = user_data;
 658         struct session_info *info = session->info;
 659
 660         DBG("remove %s", session->session_path);
 661
 662         g_hash_table_destroy(session->service_hash);
 663         g_sequence_free(session->service_list);
 664
 665         if (info->entry != NULL &&
 666                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 667                 __connman_service_disconnect(info->entry->service);
 668         }
 669
 670         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 671         g_slist_free(info->allowed_bearers);
 672
 673         g_free(session->owner);
 674         g_free(session->session_path);
 675         g_free(session->notify_path);
 676         g_free(session->info);
 677         g_free(session->info_last);
 678
 679         g_free(session);
 680 }
 681
 682 static connman_bool_t is_online(enum connman_service_state state)
 683 {
 684         switch (state) {
 685         case CONNMAN_SERVICE_STATE_UNKNOWN:
 686         case CONNMAN_SERVICE_STATE_IDLE:
 687         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 688         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 689         case CONNMAN_SERVICE_STATE_DISCONNECT:
 690         case CONNMAN_SERVICE_STATE_FAILURE:
 691         case CONNMAN_SERVICE_STATE_READY:
 692                 break;
 693         case CONNMAN_SERVICE_STATE_ONLINE:
 694                 return TRUE;
 695         }
 696
 697         return FALSE;
 698 }
 699
 700 static connman_bool_t is_connecting(enum connman_service_state state)
 701 {
 702         switch (state) {
 703         case CONNMAN_SERVICE_STATE_UNKNOWN:
 704         case CONNMAN_SERVICE_STATE_IDLE:
 705                 break;
 706         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 707         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 708         case CONNMAN_SERVICE_STATE_READY:
 709                 return TRUE;
 710         case CONNMAN_SERVICE_STATE_DISCONNECT:
 711         case CONNMAN_SERVICE_STATE_FAILURE:
 712         case CONNMAN_SERVICE_STATE_ONLINE:
 713                 break;
 714         }
 715
 716         return FALSE;
 717 }
 718
 719 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 720 {
 721         switch (reason) {
 722         case CONNMAN_SESSION_REASON_UNKNOWN:
 723         case CONNMAN_SESSION_REASON_FREE_RIDE:
 724         case CONNMAN_SESSION_REASON_DISCONNECT:
 725                 break;
 726         case CONNMAN_SESSION_REASON_CONNECT:
 727         case CONNMAN_SESSION_REASON_PERIODIC:
 728                 return TRUE;
 729         }
 730
 731         return FALSE;
 732 }
 733
 734 static connman_bool_t explicit_disconnect(struct session_info *info)
 735 {
 736         if (info->entry == NULL)
 737                 return FALSE;
 738
 739         DBG("reason %s service %p state %d",
 740                 reason2string(info->entry->reason),
 741                 info->entry->service, info->entry->state);
 742
 743         if (info->entry->reason == CONNMAN_SESSION_REASON_UNKNOWN)
 744                 return FALSE;
 745
 746         if (explicit_connect(info->entry->reason) == FALSE)
 747                 return FALSE;
 748
 749         if (__connman_service_session_dec(info->entry->service) == FALSE)
 750                 return FALSE;
 751
 752         if (ecall_info != NULL && ecall_info != info)
 753                 return FALSE;
 754
 755         return TRUE;
 756 }
 757
 758 static gboolean call_disconnect(gpointer user_data)
 759 {
 760         struct connman_service *service = user_data;
 761
 762         /*
 763          * TODO: We should mark this entry as pending work. In case
 764          * disconnect fails we just unassign this session from the
 765          * service and can't do anything later on it
 766          */
 767         DBG("disconnect service %p", service);
 768         __connman_service_disconnect(service);
 769
 770         return FALSE;
 771 }
 772
 773 static gboolean call_connect(gpointer user_data)
 774 {
 775         struct connman_service *service = user_data;
 776
 777         DBG("connect service %p", service);
 778         __connman_service_connect(service);
 779
 780         return FALSE;
 781 }
 782
 783 static void deselect_service(struct session_info *info)
 784 {
 785         struct connman_service *service;
 786         connman_bool_t disconnect, online;
 787
 788         DBG("");
 789
 790         if (info->entry == NULL)
 791                 return;
 792
 793         disconnect = explicit_disconnect(info);
 794
 795         online = is_connecting(info->entry->state) == TRUE ||
 796                         is_online(info->entry->state) == TRUE;
 797
 798         info->online = FALSE;
 799         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 800
 801         service = info->entry->service;
 802         info->entry = NULL;
 803
 804         DBG("disconnect %d online %d", disconnect, online);
 805
 806         if (disconnect == TRUE && online == TRUE)
 807                 g_timeout_add_seconds(0, call_disconnect, service);
 808 }
 809
 810 static void deselect_and_disconnect(struct connman_session *session,
 811                                         enum connman_session_reason reason)
 812 {
 813         struct session_info *info = session->info;
 814
 815         deselect_service(info);
 816
 817         info->reason = reason;
 818 }
 819
 820 static void select_online_service(struct session_info *info,
 821                                         struct service_entry *entry)
 822 {
 823         info->online = TRUE;
 824
 825         info->entry = entry;
 826         info->entry->reason = info->reason;
 827
 828         if (explicit_connect(info->reason) == FALSE)
 829                 return;
 830
 831         __connman_service_session_inc(info->entry->service);
 832 }
 833
 834 static void select_offline_service(struct session_info *info,
 835                                         struct service_entry *entry)
 836 {
 837         if (explicit_connect(info->reason) == FALSE) {
 838                 /* Don't select this service. It is not online and we
 839                  * don't call connect on it. This happends for example
 840                  * when the system is idle and we create a new session
 841                  * which is in free ride mode.
 842                  */
 843                 deselect_service(info);
 844                 return;
 845         }
 846
 847         info->online = FALSE;
 848
 849         info->entry = entry;
 850         info->entry->reason = info->reason;
 851
 852         __connman_service_session_inc(info->entry->service);
 853         g_timeout_add_seconds(0, call_connect, info->entry->service);
 854 }
 855
 856 static void select_service(struct session_info *info,
 857                                 struct service_entry *entry)
 858 {
 859         DBG("service %p", entry->service);
 860
 861         if (is_online(entry->state) == TRUE)
 862                 select_online_service(info, entry);
 863         else
 864                 select_offline_service(info, entry);
 865 }
 866
 867 static void select_and_connect(struct connman_session *session,
 868                                 enum connman_session_reason reason)
 869 {
 870         struct session_info *info = session->info;
 871         struct service_entry *entry = NULL;
 872         GSequenceIter *iter;
 873
 874         DBG("session %p reason %s", session, reason2string(reason));
 875
 876         info->reason = reason;
 877
 878         iter = g_sequence_get_begin_iter(session->service_list);
 879
 880         while (g_sequence_iter_is_end(iter) == FALSE) {
 881                 entry = g_sequence_get(iter);
 882
 883                 switch (entry->state) {
 884                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 885                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 886                 case CONNMAN_SERVICE_STATE_READY:
 887                 case CONNMAN_SERVICE_STATE_ONLINE:
 888                 case CONNMAN_SERVICE_STATE_IDLE:
 889                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 890                         select_service(info, entry);
 891                         return;
 892                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 893                 case CONNMAN_SERVICE_STATE_FAILURE:
 894                         break;
 895                 }
 896
 897                 iter = g_sequence_iter_next(iter);
 898         }
 899 }
 900
 901 static void session_changed(struct connman_session *session,
 902                                 enum connman_session_trigger trigger)
 903 {
 904         struct session_info *info = session->info;
 905         struct session_info *info_last = session->info_last;
 906         GSequenceIter *iter;
 907
 908         /*
 909          * TODO: This only a placeholder for the 'real' algorithm to
 910          * play a bit around. So we are going to improve it step by step.
 911          */
 912
 913         DBG("session %p trigger %s reason %s", session, trigger2string(trigger),
 914                                                 reason2string(info->reason));
 915
 916         switch (trigger) {
 917         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 918                 DBG("ignore session changed event");
 919                 return;
 920         case CONNMAN_SESSION_TRIGGER_SETTING:
 921                 if (info->entry != NULL) {
 922                         iter = g_hash_table_lookup(session->service_hash,
 923                                                         info->entry->service);
 924                         if (iter == NULL) {
 925                                 /*
 926                                  * This service is not part of this
 927                                  * session anymore.
 928                                  */
 929                                 deselect_and_disconnect(session, info->reason);
 930                         }
 931                 }
 932
 933                 if (info->online == FALSE) {
 934                         select_and_connect(session,
 935                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 936                 }
 937
 938                 break;
 939         case CONNMAN_SESSION_TRIGGER_CONNECT:
 940                 if (info->online == TRUE) {
 941                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
 942                                 break;
 943                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 944                         __connman_service_session_inc(info->entry->service);
 945                         break;
 946                 }
 947
 948                 select_and_connect(session,
 949                                 CONNMAN_SESSION_REASON_CONNECT);
 950
 951                 break;
 952         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 953                 deselect_and_disconnect(session,
 954                                         CONNMAN_SESSION_REASON_DISCONNECT);
 955
 956                 break;
 957         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 958                 if (info->online == TRUE) {
 959                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 960                         __connman_service_session_inc(info->entry->service);
 961                         break;
 962                 }
 963
 964                 select_and_connect(session,
 965                                 CONNMAN_SESSION_REASON_PERIODIC);
 966
 967                 break;
 968         case CONNMAN_SESSION_TRIGGER_SERVICE:
 969                 if (info->entry != NULL &&
 970                                 (is_connecting(info->entry->state) == TRUE ||
 971                                         is_online(info->entry->state) == TRUE)) {
 972                         break;
 973                 }
 974
 975                 switch (info->reason) {
 976                 case CONNMAN_SESSION_REASON_CONNECT:
 977                         /*
 978                          * We are not online, we are not connecting, that
 979                          * means we could still have a valid info->entry.
 980                          * Though something has changed from the service layer.
 981                          * Therefore we want to restart the algorithm. Before we
 982                          * can do that we have to cleanup a potientional old entry.
 983                          */
 984                         deselect_and_disconnect(session,
 985                                                 CONNMAN_SESSION_REASON_CONNECT);
 986
 987                         DBG("Retry to find a matching session");
 988                         /*
 989                          * The user called Connect() but there was no
 990                          * matching session available at this point.
 991                          * Now there might be a new one. Let's retry
 992                          * to select and connect
 993                          */
 994                         select_and_connect(session,
 995                                         CONNMAN_SESSION_REASON_CONNECT);
 996                         break;
 997                 case CONNMAN_SESSION_REASON_PERIODIC:
 998                 case CONNMAN_SESSION_REASON_FREE_RIDE:
 999                         if (info->stay_connected == TRUE) {
1000                                 DBG("StayConnected");
1001                                 select_and_connect(session,
1002                                         CONNMAN_SESSION_REASON_CONNECT);
1003                         } else {
1004                                 select_and_connect(session,
1005                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1006                         }
1007                         break;
1008                 case CONNMAN_SESSION_REASON_DISCONNECT:
1009                 case CONNMAN_SESSION_REASON_UNKNOWN:
1010                         break;
1011                 }
1012                 break;
1013         case CONNMAN_SESSION_TRIGGER_ECALL:
1014                 if (info->online == FALSE && info->entry != NULL &&
1015                                 info->entry->service != NULL) {
1016                         deselect_and_disconnect(session, info->reason);
1017                 }
1018
1019                 break;
1020         }
1021
1022         if (info->entry != info_last->entry)
1023                 session->info_dirty = TRUE;
1024
1025         session_notify(session);
1026 }
1027
1028 static DBusMessage *connect_session(DBusConnection *conn,
1029                                         DBusMessage *msg, void *user_data)
1030 {
1031         struct connman_session *session = user_data;
1032         struct session_info *info = session->info;
1033
1034         DBG("session %p", session);
1035
1036         if (ecall_info != NULL && ecall_info != info)
1037                 return __connman_error_failed(msg, EBUSY);
1038
1039         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1040
1041         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1042 }
1043
1044 static DBusMessage *disconnect_session(DBusConnection *conn,
1045                                         DBusMessage *msg, void *user_data)
1046 {
1047         struct connman_session *session = user_data;
1048         struct session_info *info = session->info;
1049
1050         DBG("session %p", session);
1051
1052         if (ecall_info != NULL && ecall_info != info)
1053                 return __connman_error_failed(msg, EBUSY);
1054
1055         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1056
1057         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1058 }
1059
1060 static struct service_entry *create_service_entry(struct connman_service *service,
1061                                         const char *name,
1062                                         enum connman_service_state state)
1063 {
1064         struct service_entry *entry;
1065         enum connman_service_type type;
1066         int idx;
1067
1068         entry = g_try_new0(struct service_entry, 1);
1069         if (entry == NULL)
1070                 return entry;
1071
1072         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
1073         entry->state = state;
1074         if (name != NULL)
1075                 entry->name = name;
1076         else
1077                 entry->name = "";
1078         entry->service = service;
1079
1080         idx = __connman_service_get_index(entry->service);
1081         entry->ifname = connman_inet_ifname(idx);
1082         if (entry->ifname == NULL)
1083                 entry->ifname = g_strdup("");
1084
1085         type = connman_service_get_type(entry->service);
1086         entry->bearer = service2bearer(type);
1087
1088         return entry;
1089 }
1090
1091 static void destroy_service_entry(gpointer data)
1092 {
1093         struct service_entry *entry = data;
1094
1095         g_free(entry->ifname);
1096
1097         g_free(entry);
1098 }
1099
1100 static void update_allowed_bearers(struct connman_session *session)
1101 {
1102         struct service_entry *entry;
1103         GSequenceIter *iter;
1104
1105         if (session->service_list != NULL) {
1106                 g_hash_table_remove_all(session->service_hash);
1107                 g_sequence_free(session->service_list);
1108         }
1109
1110         session->service_list = __connman_service_get_list(session,
1111                                                         service_match,
1112                                                         create_service_entry,
1113                                                         destroy_service_entry);
1114
1115         g_sequence_sort(session->service_list, sort_services, session);
1116
1117         iter = g_sequence_get_begin_iter(session->service_list);
1118
1119         while (g_sequence_iter_is_end(iter) == FALSE) {
1120                 entry = g_sequence_get(iter);
1121
1122                 DBG("service %p type %s name %s", entry->service,
1123                         service2bearer(connman_service_get_type(entry->service)),
1124                         entry->name);
1125
1126                 g_hash_table_replace(session->service_hash,
1127                                         entry->service, iter);
1128
1129                 iter = g_sequence_iter_next(iter);
1130         }
1131
1132         session->info_dirty = TRUE;
1133 }
1134
1135 static void update_ecall_sessions(struct connman_session *session)
1136 {
1137         struct session_info *info = session->info;
1138         struct connman_session *session_iter;
1139         GHashTableIter iter;
1140         gpointer key, value;
1141
1142         g_hash_table_iter_init(&iter, session_hash);
1143
1144         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1145                 session_iter = value;
1146
1147                 if (session_iter == session)
1148                         continue;
1149
1150                 session_iter->info->ecall = info->ecall;
1151                 session_iter->info_dirty = TRUE;
1152
1153                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1154         }
1155 }
1156
1157 static void update_ecall(struct connman_session *session)
1158 {
1159         struct session_info *info = session->info;
1160         struct session_info *info_last = session->info_last;
1161
1162         DBG("session %p ecall_info %p ecall %d -> %d", session,
1163                 ecall_info, info_last->ecall, info->ecall);
1164
1165         if (ecall_info == NULL) {
1166                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1167                         goto err;
1168
1169                 ecall_info = info;
1170         } else if (ecall_info == info) {
1171                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1172                         goto err;
1173
1174                 ecall_info = NULL;
1175         } else {
1176                 goto err;
1177         }
1178
1179         update_ecall_sessions(session);
1180
1181         session->info_dirty = TRUE;
1182         return;
1183
1184 err:
1185         /* not a valid transition */
1186         info->ecall = info_last->ecall;
1187 }
1188
1189 static DBusMessage *change_session(DBusConnection *conn,
1190                                         DBusMessage *msg, void *user_data)
1191 {
1192         struct connman_session *session = user_data;
1193         struct session_info *info = session->info;
1194         struct session_info *info_last = session->info_last;
1195         DBusMessageIter iter, value;
1196         const char *name;
1197         GSList *allowed_bearers;
1198
1199         DBG("session %p", session);
1200         if (dbus_message_iter_init(msg, &iter) == FALSE)
1201                 return __connman_error_invalid_arguments(msg);
1202
1203         dbus_message_iter_get_basic(&iter, &name);
1204         dbus_message_iter_next(&iter);
1205         dbus_message_iter_recurse(&iter, &value);
1206
1207         switch (dbus_message_iter_get_arg_type(&value)) {
1208         case DBUS_TYPE_ARRAY:
1209                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1210                         allowed_bearers = session_parse_allowed_bearers(&value);
1211
1212                         g_slist_foreach(info->allowed_bearers,
1213                                         cleanup_bearer_info, NULL);
1214                         g_slist_free(info->allowed_bearers);
1215
1216                         if (allowed_bearers == NULL) {
1217                                 allowed_bearers = session_allowed_bearers_any();
1218
1219                                 if (allowed_bearers == NULL)
1220                                         return __connman_error_failed(msg, ENOMEM);
1221                         }
1222
1223                         info->allowed_bearers = allowed_bearers;
1224
1225                         update_allowed_bearers(session);
1226                 } else {
1227                         goto err;
1228                 }
1229                 break;
1230         case DBUS_TYPE_BOOLEAN:
1231                 if (g_str_equal(name, "Priority") == TRUE) {
1232                         dbus_message_iter_get_basic(&value,
1233                                         &info->priority);
1234
1235                         if (info_last->priority != info->priority)
1236                                 session->info_dirty = TRUE;
1237                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1238                         dbus_message_iter_get_basic(&value,
1239                                         &info->avoid_handover);
1240
1241                         if (info_last->avoid_handover != info->avoid_handover)
1242                                 session->info_dirty = TRUE;
1243                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1244                         dbus_message_iter_get_basic(&value,
1245                                         &info->stay_connected);
1246
1247                         if (info_last->stay_connected != info->stay_connected)
1248                                 session->info_dirty = TRUE;
1249                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1250                         dbus_message_iter_get_basic(&value,
1251                                         &info->ecall);
1252
1253                         update_ecall(session);
1254                 } else {
1255                         goto err;
1256                 }
1257                 break;
1258         case DBUS_TYPE_UINT32:
1259                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1260                         dbus_message_iter_get_basic(&value,
1261                                         &info->periodic_connect);
1262
1263                         if (info_last->periodic_connect != info->periodic_connect)
1264                                 session->info_dirty = TRUE;
1265                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1266                         dbus_message_iter_get_basic(&value,
1267                                         &info->idle_timeout);
1268
1269                         if (info_last->idle_timeout != info->idle_timeout)
1270                                 session->info_dirty = TRUE;
1271                 } else {
1272                         goto err;
1273                 }
1274                 break;
1275         case DBUS_TYPE_STRING:
1276                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1277                         const char *val;
1278                         dbus_message_iter_get_basic(&value, &val);
1279                         info->roaming_policy =
1280                                         string2roamingpolicy(val);
1281
1282                         if (info_last->roaming_policy != info->roaming_policy)
1283                                 session->info_dirty = TRUE;
1284                 } else {
1285                         goto err;
1286                 }
1287                 break;
1288         default:
1289                 goto err;
1290         }
1291
1292         if (session->info_dirty == TRUE)
1293                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1294
1295         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1296
1297 err:
1298         return __connman_error_invalid_arguments(msg);
1299 }
1300
1301 static void release_session(gpointer key, gpointer value, gpointer user_data)
1302 {
1303         struct connman_session *session = value;
1304         DBusMessage *message;
1305
1306         DBG("owner %s path %s", session->owner, session->notify_path);
1307
1308         if (session->notify_watch > 0)
1309                 g_dbus_remove_watch(connection, session->notify_watch);
1310
1311         g_dbus_unregister_interface(connection, session->session_path,
1312                                                 CONNMAN_SESSION_INTERFACE);
1313
1314         message = dbus_message_new_method_call(session->owner,
1315                                                 session->notify_path,
1316                                                 CONNMAN_NOTIFICATION_INTERFACE,
1317                                                 "Release");
1318         if (message == NULL)
1319                 return;
1320
1321         dbus_message_set_no_reply(message, TRUE);
1322
1323         g_dbus_send_message(connection, message);
1324 }
1325
1326 static int session_disconnect(struct connman_session *session)
1327 {
1328         DBG("session %p, %s", session, session->owner);
1329
1330         if (session->notify_watch > 0)
1331                 g_dbus_remove_watch(connection, session->notify_watch);
1332
1333         g_dbus_unregister_interface(connection, session->session_path,
1334                                                 CONNMAN_SESSION_INTERFACE);
1335
1336         deselect_and_disconnect(session,
1337                                 CONNMAN_SESSION_REASON_DISCONNECT);
1338
1339         g_hash_table_remove(session_hash, session->session_path);
1340
1341         return 0;
1342 }
1343
1344 static void owner_disconnect(DBusConnection *conn, void *user_data)
1345 {
1346         struct connman_session *session = user_data;
1347
1348         DBG("session %p, %s died", session, session->owner);
1349
1350         session_disconnect(session);
1351 }
1352
1353 static DBusMessage *destroy_session(DBusConnection *conn,
1354                                         DBusMessage *msg, void *user_data)
1355 {
1356         struct connman_session *session = user_data;
1357
1358         DBG("session %p", session);
1359
1360         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1361 }
1362
1363 static GDBusMethodTable session_methods[] = {
1364         { "Destroy",    "",   "", destroy_session    },
1365         { "Connect",    "",   "", connect_session    },
1366         { "Disconnect", "",   "", disconnect_session },
1367         { "Change",     "sv", "", change_session     },
1368         { },
1369 };
1370
1371 int __connman_session_create(DBusMessage *msg)
1372 {
1373         const char *owner, *notify_path;
1374         char *session_path = NULL;
1375         DBusMessageIter iter, array;
1376         struct connman_session *session = NULL;
1377         struct session_info *info, *info_last;
1378
1379         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1380         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1381         enum connman_session_roaming_policy roaming_policy =
1382                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1383         GSList *allowed_bearers = NULL;
1384         unsigned int periodic_connect = 0;
1385         unsigned int idle_timeout = 0;
1386
1387         int err;
1388
1389         owner = dbus_message_get_sender(msg);
1390
1391         DBG("owner %s", owner);
1392
1393         if (ecall_info != NULL) {
1394                 /*
1395                  * If there is an emergency call already going on,
1396                  * ignore session creation attempt
1397                  */
1398                 err = -EBUSY;
1399                 goto err;
1400         }
1401
1402         dbus_message_iter_init(msg, &iter);
1403         dbus_message_iter_recurse(&iter, &array);
1404
1405         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1406                 DBusMessageIter entry, value;
1407                 const char *key, *val;
1408
1409                 dbus_message_iter_recurse(&array, &entry);
1410                 dbus_message_iter_get_basic(&entry, &key);
1411
1412                 dbus_message_iter_next(&entry);
1413                 dbus_message_iter_recurse(&entry, &value);
1414
1415                 switch (dbus_message_iter_get_arg_type(&value)) {
1416                 case DBUS_TYPE_ARRAY:
1417                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1418                                 allowed_bearers =
1419                                         session_parse_allowed_bearers(&value);
1420                         } else {
1421                                 return -EINVAL;
1422                         }
1423                         break;
1424                 case DBUS_TYPE_BOOLEAN:
1425                         if (g_str_equal(key, "Priority") == TRUE) {
1426                                 dbus_message_iter_get_basic(&value,
1427                                                         &priority);
1428                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1429                                 dbus_message_iter_get_basic(&value,
1430                                                         &avoid_handover);
1431                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1432                                 dbus_message_iter_get_basic(&value,
1433                                                         &stay_connected);
1434                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1435                                 dbus_message_iter_get_basic(&value,
1436                                                         &ecall);
1437                         } else {
1438                                 return -EINVAL;
1439                         }
1440                         break;
1441                 case DBUS_TYPE_UINT32:
1442                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1443                                 dbus_message_iter_get_basic(&value,
1444                                                         &periodic_connect);
1445                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1446                                 dbus_message_iter_get_basic(&value,
1447                                                         &idle_timeout);
1448                         } else {
1449                                 return -EINVAL;
1450                         }
1451                         break;
1452                 case DBUS_TYPE_STRING:
1453                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1454                                 dbus_message_iter_get_basic(&value, &val);
1455                                 roaming_policy = string2roamingpolicy(val);
1456                         } else {
1457                                 return -EINVAL;
1458                         }
1459                 }
1460                 dbus_message_iter_next(&array);
1461         }
1462
1463         dbus_message_iter_next(&iter);
1464         dbus_message_iter_get_basic(&iter, &notify_path);
1465
1466         if (notify_path == NULL) {
1467                 err = -EINVAL;
1468                 goto err;
1469         }
1470
1471         session_path = g_strdup_printf("/sessions%s", notify_path);
1472         if (session_path == NULL) {
1473                 err = -ENOMEM;
1474                 goto err;
1475         }
1476
1477         session = g_hash_table_lookup(session_hash, session_path);
1478         if (session != NULL) {
1479                 session = NULL;
1480                 err = -EEXIST;
1481                 goto err;
1482         }
1483
1484         session = g_try_new0(struct connman_session, 1);
1485         if (session == NULL) {
1486                 err = -ENOMEM;
1487                 goto err;
1488         }
1489
1490         session->info = g_try_new0(struct session_info, 1);
1491         if (session->info == NULL) {
1492                 err = -ENOMEM;
1493                 goto err;
1494         }
1495
1496         session->info_last = g_try_new0(struct session_info, 1);
1497         if (session->info_last == NULL) {
1498                 err = -ENOMEM;
1499                 goto err;
1500         }
1501
1502         info = session->info;
1503         info_last = session->info_last;
1504
1505         session->owner = g_strdup(owner);
1506         session->session_path = session_path;
1507         session->notify_path = g_strdup(notify_path);
1508         session->notify_watch =
1509                 g_dbus_add_disconnect_watch(connection, session->owner,
1510                                         owner_disconnect, session, NULL);
1511
1512         session->service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1513                                                 NULL, NULL);
1514
1515         info->online = FALSE;
1516         info->priority = priority;
1517         info->avoid_handover = avoid_handover;
1518         info->stay_connected = stay_connected;
1519         info->periodic_connect = periodic_connect;
1520         info->idle_timeout = idle_timeout;
1521         info->ecall = ecall;
1522         info->roaming_policy = roaming_policy;
1523         info->entry = NULL;
1524         info->marker = 0;
1525
1526         if (allowed_bearers == NULL) {
1527                 info->allowed_bearers =
1528                                 session_allowed_bearers_any();
1529
1530                 if (info->allowed_bearers == NULL) {
1531                         err = -ENOMEM;
1532                         goto err;
1533                 }
1534         } else {
1535                 info->allowed_bearers = allowed_bearers;
1536         }
1537
1538         g_hash_table_replace(session_hash, session->session_path, session);
1539
1540         DBG("add %s", session->session_path);
1541
1542         if (g_dbus_register_interface(connection, session->session_path,
1543                                         CONNMAN_SESSION_INTERFACE,
1544                                         session_methods, NULL,
1545                                         NULL, session, NULL) == FALSE) {
1546                 connman_error("Failed to register %s", session->session_path);
1547                 g_hash_table_remove(session_hash, session->session_path);
1548                 session = NULL;
1549
1550                 err = -EINVAL;
1551                 goto err;
1552         }
1553
1554         g_dbus_send_reply(connection, msg,
1555                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1556                                 DBUS_TYPE_INVALID);
1557
1558
1559         update_allowed_bearers(session);
1560         if (info->ecall == TRUE) {
1561                 ecall_info = info;
1562                 update_ecall_sessions(session);
1563         }
1564
1565         info_last->online = info->online;
1566         info_last->priority = info->priority;
1567         info_last->avoid_handover = info->avoid_handover;
1568         info_last->stay_connected = info->stay_connected;
1569         info_last->periodic_connect = info->periodic_connect;
1570         info_last->idle_timeout = info->idle_timeout;
1571         info_last->ecall = info->ecall;
1572         info_last->roaming_policy = info->roaming_policy;
1573         info_last->entry = info->entry;
1574         info_last->marker = info->marker;
1575         info_last->allowed_bearers = info->allowed_bearers;
1576
1577         session->info_dirty = TRUE;
1578         session->append_all = TRUE;
1579
1580         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1581
1582         return 0;
1583
1584 err:
1585         connman_error("Failed to create session");
1586
1587         if (session != NULL) {
1588                 if (session->info_last != NULL)
1589                         g_free(session->info_last);
1590                 if (session->info != NULL)
1591                         g_free(session->info);
1592                 g_free(session);
1593         }
1594
1595         g_free(session_path);
1596
1597         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1598         g_slist_free(allowed_bearers);
1599
1600         return err;
1601 }
1602
1603 int __connman_session_destroy(DBusMessage *msg)
1604 {
1605         const char *owner, *session_path;
1606         struct connman_session *session;
1607
1608         owner = dbus_message_get_sender(msg);
1609
1610         DBG("owner %s", owner);
1611
1612         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1613                                                         DBUS_TYPE_INVALID);
1614         if (session_path == NULL)
1615                 return -EINVAL;
1616
1617         session = g_hash_table_lookup(session_hash, session_path);
1618         if (session == NULL)
1619                 return -EINVAL;
1620
1621         if (g_strcmp0(owner, session->owner) != 0)
1622                 return -EACCES;
1623
1624         session_disconnect(session);
1625
1626         return 0;
1627 }
1628
1629 connman_bool_t __connman_session_mode()
1630 {
1631         return sessionmode;
1632 }
1633
1634 void __connman_session_set_mode(connman_bool_t enable)
1635 {
1636         DBG("enable %d", enable);
1637
1638         sessionmode = enable;
1639
1640         if (sessionmode == TRUE)
1641                 __connman_service_disconnect_all();
1642 }
1643
1644 static void service_add(struct connman_service *service,
1645                         const char *name)
1646 {
1647         GHashTableIter iter;
1648         GSequenceIter *iter_service_list;
1649         gpointer key, value;
1650         struct connman_session *session;
1651         struct service_entry *entry;
1652
1653         DBG("service %p", service);
1654
1655         g_hash_table_iter_init(&iter, session_hash);
1656
1657         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1658                 session = value;
1659
1660                 if (service_match(session, service) == FALSE)
1661                         continue;
1662
1663                 entry = create_service_entry(service, name,
1664                                                 CONNMAN_SERVICE_STATE_IDLE);
1665                 if (entry == NULL)
1666                         continue;
1667
1668                 iter_service_list =
1669                         g_sequence_insert_sorted(session->service_list,
1670                                                         entry, sort_services,
1671                                                         session);
1672
1673                 g_hash_table_replace(session->service_hash, service,
1674                                         iter_service_list);
1675
1676                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1677         }
1678 }
1679
1680 static void service_remove(struct connman_service *service)
1681 {
1682
1683         GHashTableIter iter;
1684         gpointer key, value;
1685         struct connman_session *session;
1686         struct session_info *info;
1687
1688         DBG("service %p", service);
1689
1690         g_hash_table_iter_init(&iter, session_hash);
1691
1692         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1693                 GSequenceIter *iter;
1694                 session = value;
1695                 info = session->info;
1696
1697                 iter = g_hash_table_lookup(session->service_hash, service);
1698                 if (iter == NULL)
1699                         continue;
1700
1701                 g_sequence_remove(iter);
1702
1703                 if (info->entry != NULL && info->entry->service == service)
1704                         info->entry = NULL;
1705                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1706         }
1707 }
1708
1709 static void service_state_changed(struct connman_service *service,
1710                                         enum connman_service_state state)
1711 {
1712         GHashTableIter iter;
1713         gpointer key, value;
1714         struct connman_session *session;
1715         struct session_info *info, *info_last;
1716
1717         DBG("service %p state %d", service, state);
1718
1719         g_hash_table_iter_init(&iter, session_hash);
1720
1721         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1722                 GSequenceIter *service_iter;
1723
1724                 session = value;
1725                 info = session->info;
1726                 info_last = session->info_last;
1727
1728                 service_iter = g_hash_table_lookup(session->service_hash, service);
1729                 if (service_iter != NULL) {
1730                         struct service_entry *entry;
1731
1732                         entry = g_sequence_get(service_iter);
1733                         entry->state = state;
1734
1735                         if (info->entry == entry) {
1736                                 info->online = is_online(entry->state);
1737                                 if (info_last->online != info->online)
1738                                         session->info_dirty = TRUE;
1739                         }
1740                 }
1741
1742                 session_changed(session,
1743                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1744         }
1745 }
1746
1747 static void ipconfig_changed(struct connman_service *service,
1748                                 struct connman_ipconfig *ipconfig)
1749 {
1750         GHashTableIter iter;
1751         gpointer key, value;
1752         struct connman_session *session;
1753         struct session_info *info;
1754         enum connman_ipconfig_type type;
1755
1756         DBG("service %p ipconfig %p", service, ipconfig);
1757
1758         type = __connman_ipconfig_get_config_type(ipconfig);
1759
1760         g_hash_table_iter_init(&iter, session_hash);
1761
1762         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1763                 session = value;
1764                 info = session->info;
1765
1766                 if (info->entry != NULL && info->entry->service == service) {
1767                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1768                                 ipconfig_ipv4_changed(session);
1769                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1770                                 ipconfig_ipv6_changed(session);
1771                 }
1772         }
1773 }
1774
1775 static struct connman_notifier session_notifier = {
1776         .name                   = "session",
1777         .service_add            = service_add,
1778         .service_remove         = service_remove,
1779         .service_state_changed  = service_state_changed,
1780         .ipconfig_changed       = ipconfig_changed,
1781 };
1782
1783 int __connman_session_init(void)
1784 {
1785         int err;
1786
1787         DBG("");
1788
1789         connection = connman_dbus_get_connection();
1790         if (connection == NULL)
1791                 return -1;
1792
1793         err = connman_notifier_register(&session_notifier);
1794         if (err < 0) {
1795                 dbus_connection_unref(connection);
1796                 return err;
1797         }
1798
1799         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1800                                                 NULL, cleanup_session);
1801
1802         sessionmode = FALSE;
1803         return 0;
1804 }
1805
1806 void __connman_session_cleanup(void)
1807 {
1808         DBG("");
1809
1810         if (connection == NULL)
1811                 return;
1812
1813         connman_notifier_unregister(&session_notifier);
1814
1815         g_hash_table_foreach(session_hash, release_session, NULL);
1816         g_hash_table_destroy(session_hash);
1817         session_hash = NULL;
1818
1819         dbus_connection_unref(connection);
1820 }