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