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_roaming_policy {
  37         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  38         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  39         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  40         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  41         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  42         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  43 };
  44
  45 struct session_info {
  46         char *bearer;
  47         const char *name;
  48         char *ifname;
  49         connman_bool_t connect;
  50         connman_bool_t online;
  51         connman_bool_t priority;
  52         GSList *allowed_bearers;
  53         connman_bool_t avoid_handover;
  54         connman_bool_t stay_connected;
  55         unsigned int periodic_connect;
  56         unsigned int idle_timeout;
  57         connman_bool_t ecall;
  58         enum connman_session_roaming_policy roaming_policy;
  59         unsigned int marker;
  60
  61         struct connman_service *service;
  62 };
  63
  64 struct connman_session {
  65         char *owner;
  66         char *session_path;
  67         char *notify_path;
  68         guint notify_watch;
  69
  70         connman_bool_t append_all;
  71         connman_bool_t info_dirty;
  72         struct session_info info;
  73         struct session_info info_last;
  74
  75         GSequence *service_list;
  76 };
  77
  78 struct bearer_info {
  79         char *name;
  80         connman_bool_t match_all;
  81         enum connman_service_type service_type;
  82 };
  83
  84 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
  85 {
  86         switch (policy) {
  87         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
  88                 break;
  89         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
  90                 return "default";
  91         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
  92                 return "always";
  93         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
  94                 return "forbidden";
  95         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
  96                 return "national";
  97         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
  98                 return "international";
  99         }
 100
 101         return NULL;
 102 }
 103
 104 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 105 {
 106         if (g_strcmp0(policy, "default") == 0)
 107                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 108         else if (g_strcmp0(policy, "always") == 0)
 109                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 110         else if (g_strcmp0(policy, "forbidden") == 0)
 111                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 112         else if (g_strcmp0(policy, "national") == 0)
 113                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 114         else if (g_strcmp0(policy, "international") == 0)
 115                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 116         else
 117                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 118 }
 119
 120 static enum connman_service_type bearer2service(const char *bearer)
 121 {
 122         if (bearer == NULL)
 123                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 124
 125         if (g_strcmp0(bearer, "ethernet") == 0)
 126                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 127         else if (g_strcmp0(bearer, "wifi") == 0)
 128                 return CONNMAN_SERVICE_TYPE_WIFI;
 129         else if (g_strcmp0(bearer, "wimax") == 0)
 130                 return CONNMAN_SERVICE_TYPE_WIMAX;
 131         else if (g_strcmp0(bearer, "bluetooth") == 0)
 132                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 133         else if (g_strcmp0(bearer, "3g") == 0)
 134                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 135         else
 136                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 137 }
 138
 139 static char *service2bearer(enum connman_service_type type)
 140 {
 141         switch (type) {
 142         case CONNMAN_SERVICE_TYPE_ETHERNET:
 143                 return "ethernet";
 144         case CONNMAN_SERVICE_TYPE_WIFI:
 145                 return "wifi";
 146         case CONNMAN_SERVICE_TYPE_WIMAX:
 147                 return "wimax";
 148         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 149                 return "bluetooth";
 150         case CONNMAN_SERVICE_TYPE_CELLULAR:
 151                 return "3g";
 152         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 153         case CONNMAN_SERVICE_TYPE_SYSTEM:
 154         case CONNMAN_SERVICE_TYPE_GPS:
 155         case CONNMAN_SERVICE_TYPE_VPN:
 156         case CONNMAN_SERVICE_TYPE_GADGET:
 157                 return "";
 158         }
 159
 160         return "";
 161 }
 162
 163 static char *session2bearer(struct connman_session *session)
 164 {
 165         struct session_info *info = &session->info;
 166         GSList *list;
 167         struct bearer_info *bearer_info;
 168         enum connman_service_type type;
 169
 170         if (info->service == NULL)
 171                 return "";
 172
 173         type = connman_service_get_type(info->service);
 174
 175         for (list = info->allowed_bearers;
 176                         list != NULL; list = list->next) {
 177                 bearer_info = list->data;
 178
 179                 if (bearer_info->match_all)
 180                         return service2bearer(type);
 181
 182                 if (bearer_info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN)
 183                         return bearer_info->name;
 184
 185                 if (bearer_info->service_type == type)
 186                         return service2bearer(type);
 187         }
 188
 189         return "";
 190
 191 }
 192
 193 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 194 {
 195         struct bearer_info *info = data;
 196
 197         g_free(info->name);
 198         g_free(info);
 199 }
 200
 201 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 202 {
 203         struct bearer_info *info;
 204         DBusMessageIter array;
 205         GSList *list = NULL;
 206
 207         dbus_message_iter_recurse(iter, &array);
 208
 209         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 210                 char *bearer = NULL;
 211
 212                 dbus_message_iter_get_basic(&array, &bearer);
 213
 214                 info = g_try_new0(struct bearer_info, 1);
 215                 if (info == NULL) {
 216                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 217                         g_slist_free(list);
 218
 219                         return NULL;
 220                 }
 221
 222                 info->name = g_strdup(bearer);
 223                 info->service_type = bearer2service(info->name);
 224
 225                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 226                                 g_strcmp0(info->name, "*") == 0) {
 227                         info->match_all = TRUE;
 228                 } else {
 229                         info->match_all = FALSE;
 230                 }
 231
 232                 list = g_slist_append(list, info);
 233
 234                 dbus_message_iter_next(&array);
 235         }
 236
 237         return list;
 238 }
 239
 240 static GSList *session_allowed_bearers_any(void)
 241 {
 242         struct bearer_info *info;
 243         GSList *list = NULL;
 244
 245         info = g_try_new0(struct bearer_info, 1);
 246         if (info == NULL) {
 247                 g_slist_free(list);
 248
 249                 return NULL;
 250         }
 251
 252         info->name = g_strdup("");
 253         info->match_all = TRUE;
 254         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 255
 256         list = g_slist_append(list, info);
 257
 258         return list;
 259 }
 260
 261 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 262 {
 263         struct session_info *info = user_data;
 264         GSList *list;
 265
 266         for (list = info->allowed_bearers;
 267                         list != NULL; list = list->next) {
 268                 struct bearer_info *info = list->data;
 269
 270                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 271                                                 &info->name);
 272         }
 273 }
 274
 275 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 276 {
 277         struct connman_service *service = user_data;
 278         struct connman_ipconfig *ipconfig_ipv4;
 279
 280         if (service == NULL)
 281                 return;
 282
 283         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 284         if (ipconfig_ipv4 == NULL)
 285                 return;
 286
 287         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 288 }
 289
 290 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 291 {
 292         struct connman_service *service = user_data;
 293         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 294
 295         if (service == NULL)
 296                 return;
 297
 298         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 299         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 300         if (ipconfig_ipv6 == NULL)
 301                 return;
 302
 303         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 304 }
 305
 306 static void append_notify(DBusMessageIter *dict,
 307                                         struct connman_session *session)
 308 {
 309         struct session_info *info = &session->info;
 310         struct session_info *info_last = &session->info_last;
 311         const char *policy;
 312
 313         if (session->append_all == TRUE ||
 314                         info->bearer != info_last->bearer) {
 315                 connman_dbus_dict_append_basic(dict, "Bearer",
 316                                                 DBUS_TYPE_STRING,
 317                                                 &info->bearer);
 318                 info_last->bearer = info->bearer;
 319         }
 320
 321         if (session->append_all == TRUE ||
 322                         info->online != info_last->online) {
 323                 connman_dbus_dict_append_basic(dict, "Online",
 324                                                 DBUS_TYPE_BOOLEAN,
 325                                                 &info->online);
 326                 info_last->online = info->online;
 327         }
 328
 329         if (session->append_all == TRUE ||
 330                         info->name != info_last->name) {
 331                 connman_dbus_dict_append_basic(dict, "Name",
 332                                                 DBUS_TYPE_STRING,
 333                                                 &info->name);
 334                 info_last->name = info->name;
 335         }
 336
 337         if (session->append_all == TRUE ||
 338                         info->service != info_last->service) {
 339                 connman_dbus_dict_append_dict(dict, "IPv4",
 340                                                 append_ipconfig_ipv4,
 341                                                 info->service);
 342
 343                 connman_dbus_dict_append_dict(dict, "IPv6",
 344                                                 append_ipconfig_ipv6,
 345                                                 info->service);
 346
 347                 connman_dbus_dict_append_basic(dict, "Interface",
 348                                                 DBUS_TYPE_STRING,
 349                                                 &info->ifname);
 350
 351                 info_last->service = info->service;
 352         }
 353
 354
 355         if (session->append_all == TRUE ||
 356                         info->priority != info_last->priority) {
 357                 connman_dbus_dict_append_basic(dict, "Priority",
 358                                                 DBUS_TYPE_BOOLEAN,
 359                                                 &info->priority);
 360                 info_last->priority = info->priority;
 361         }
 362
 363         if (session->append_all == TRUE ||
 364                         info->allowed_bearers != info_last->allowed_bearers) {
 365                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 366                                                 DBUS_TYPE_STRING,
 367                                                 append_allowed_bearers,
 368                                                 info);
 369                 info_last->allowed_bearers = info->allowed_bearers;
 370         }
 371
 372         if (session->append_all == TRUE ||
 373                         info->avoid_handover != info_last->avoid_handover) {
 374                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 375                                                 DBUS_TYPE_BOOLEAN,
 376                                                 &info->avoid_handover);
 377                 info_last->avoid_handover = info->avoid_handover;
 378         }
 379
 380         if (session->append_all == TRUE ||
 381                         info->stay_connected != info_last->stay_connected) {
 382                 connman_dbus_dict_append_basic(dict, "StayConnected",
 383                                                 DBUS_TYPE_BOOLEAN,
 384                                                 &info->stay_connected);
 385                 info_last->stay_connected = info->stay_connected;
 386         }
 387
 388         if (session->append_all == TRUE ||
 389                         info->periodic_connect != info_last->periodic_connect) {
 390                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 391                                                 DBUS_TYPE_UINT32,
 392                                                 &info->periodic_connect);
 393                 info_last->periodic_connect = info->periodic_connect;
 394         }
 395
 396         if (session->append_all == TRUE ||
 397                         info->idle_timeout != info_last->idle_timeout) {
 398                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 399                                                 DBUS_TYPE_UINT32,
 400                                                 &info->idle_timeout);
 401                 info_last->idle_timeout = info->idle_timeout;
 402         }
 403
 404         if (session->append_all == TRUE ||
 405                         info->ecall != info_last->ecall) {
 406                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 407                                                 DBUS_TYPE_BOOLEAN,
 408                                                 &info->ecall);
 409                 info_last->ecall = info->ecall;
 410         }
 411
 412         if (session->append_all == TRUE ||
 413                         info->roaming_policy != info_last->roaming_policy) {
 414                 policy = roamingpolicy2string(info->roaming_policy);
 415                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 416                                                 DBUS_TYPE_STRING,
 417                                                 &policy);
 418                 info_last->roaming_policy = info->roaming_policy;
 419         }
 420
 421         if (session->append_all == TRUE ||
 422                         info->marker != info_last->marker) {
 423                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 424                                                 DBUS_TYPE_UINT32,
 425                                                 &info->marker);
 426                 info_last->marker = info->marker;
 427         }
 428
 429         session->append_all = FALSE;
 430         session->info_dirty = FALSE;
 431 }
 432
 433 static int session_notify(struct connman_session *session)
 434 {
 435         DBusMessage *msg;
 436         DBusMessageIter array, dict;
 437
 438         if (session->info_dirty == FALSE)
 439                 return 0;
 440
 441         DBG("session %p owner %s notify_path %s", session,
 442                 session->owner, session->notify_path);
 443
 444         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 445                                                 CONNMAN_NOTIFICATION_INTERFACE,
 446                                                 "Update");
 447         if (msg == NULL)
 448                 return -ENOMEM;
 449
 450         dbus_message_iter_init_append(msg, &array);
 451         connman_dbus_dict_open(&array, &dict);
 452
 453         append_notify(&dict, session);
 454
 455         connman_dbus_dict_close(&array, &dict);
 456
 457         g_dbus_send_message(connection, msg);
 458
 459         session->info_dirty = FALSE;
 460
 461         return 0;
 462 }
 463
 464 static void ipconfig_ipv4_changed(struct connman_session *session)
 465 {
 466         struct session_info *info = &session->info;
 467
 468         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 469                                                 "IPv4", append_ipconfig_ipv4,
 470                                                 info->service);
 471 }
 472
 473 static void ipconfig_ipv6_changed(struct connman_session *session)
 474 {
 475         struct session_info *info = &session->info;
 476
 477         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 478                                                 "IPv6", append_ipconfig_ipv6,
 479                                                 info->service);
 480 }
 481
 482 static connman_bool_t service_type_match(struct connman_session *session,
 483                                         struct connman_service *service)
 484 {
 485         struct session_info *info = &session->info;
 486         GSList *list;
 487
 488         for (list = info->allowed_bearers;
 489                         list != NULL; list = list->next) {
 490                 struct bearer_info *info = list->data;
 491                 enum connman_service_type service_type;
 492
 493                 if (info->match_all == TRUE)
 494                         return TRUE;
 495
 496                 service_type = connman_service_get_type(service);
 497                 if (info->service_type == service_type)
 498                         return TRUE;
 499         }
 500
 501         return FALSE;
 502 }
 503
 504 static connman_bool_t service_match(struct connman_session *session,
 505                                         struct connman_service *service)
 506 {
 507         if (service_type_match(session, service) == FALSE)
 508                 return FALSE;
 509
 510         return TRUE;
 511 }
 512
 513 static int service_type_weight(enum connman_service_type type)
 514 {
 515         /*
 516          * The session doesn't care which service
 517          * to use. Nevertheless we have to sort them
 518          * according their type. The ordering is
 519          *
 520          * 1. Ethernet
 521          * 2. Bluetooth
 522          * 3. WiFi/WiMAX
 523          * 4. GSM/UTMS/3G
 524          */
 525
 526         switch (type) {
 527         case CONNMAN_SERVICE_TYPE_ETHERNET:
 528                 return 4;
 529         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 530                 return 3;
 531         case CONNMAN_SERVICE_TYPE_WIFI:
 532         case CONNMAN_SERVICE_TYPE_WIMAX:
 533                 return 2;
 534         case CONNMAN_SERVICE_TYPE_CELLULAR:
 535                 return 1;
 536         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 537         case CONNMAN_SERVICE_TYPE_SYSTEM:
 538         case CONNMAN_SERVICE_TYPE_GPS:
 539         case CONNMAN_SERVICE_TYPE_VPN:
 540         case CONNMAN_SERVICE_TYPE_GADGET:
 541                 break;
 542         }
 543
 544         return 0;
 545 }
 546
 547 static gint sort_allowed_bearers(struct connman_service *service_a,
 548                                         struct connman_service *service_b,
 549                                         struct connman_session *session)
 550 {
 551         struct session_info *info = &session->info;
 552         GSList *list;
 553         enum connman_service_type type_a, type_b;
 554         int weight_a, weight_b;
 555
 556         type_a = connman_service_get_type(service_a);
 557         type_b = connman_service_get_type(service_b);
 558
 559         for (list = info->allowed_bearers;
 560                         list != NULL; list = list->next) {
 561                 struct bearer_info *info = list->data;
 562
 563                 if (info->match_all == TRUE) {
 564                         if (type_a != type_b) {
 565                                 weight_a = service_type_weight(type_a);
 566                                 weight_b = service_type_weight(type_b);
 567
 568                                 if (weight_a > weight_b)
 569                                         return -1;
 570
 571                                 if (weight_a < weight_b)
 572                                         return 1;
 573
 574                                 return 0;
 575                         }
 576                 }
 577
 578                 if (type_a == info->service_type &&
 579                                 type_b == info->service_type) {
 580                         return 0;
 581                 }
 582
 583                 if (type_a == info->service_type &&
 584                                 type_b != info->service_type) {
 585                         return -1;
 586                 }
 587
 588                 if (type_a != info->service_type &&
 589                                 type_b == info->service_type) {
 590                         return 1;
 591                 }
 592         }
 593
 594         return 0;
 595 }
 596
 597 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 598 {
 599         struct connman_service *service_a = (void *)a;
 600         struct connman_service *service_b = (void *)b;
 601         struct connman_session *session = user_data;
 602
 603         return sort_allowed_bearers(service_a, service_b, session);
 604 }
 605
 606 static void cleanup_session(gpointer user_data)
 607 {
 608         struct connman_session *session = user_data;
 609         struct session_info *info = &session->info;
 610
 611         DBG("remove %s", session->session_path);
 612
 613         g_sequence_free(session->service_list);
 614
 615         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 616         g_slist_free(info->allowed_bearers);
 617
 618         g_free(session->owner);
 619         g_free(session->session_path);
 620         g_free(session->notify_path);
 621
 622         g_free(session);
 623 }
 624
 625 static void release_session(gpointer key, gpointer value, gpointer user_data)
 626 {
 627         struct connman_session *session = value;
 628         DBusMessage *message;
 629
 630         DBG("owner %s path %s", session->owner, session->notify_path);
 631
 632         if (session->notify_watch > 0)
 633                 g_dbus_remove_watch(connection, session->notify_watch);
 634
 635         g_dbus_unregister_interface(connection, session->session_path,
 636                                                 CONNMAN_SESSION_INTERFACE);
 637
 638         message = dbus_message_new_method_call(session->owner,
 639                                                 session->notify_path,
 640                                                 CONNMAN_NOTIFICATION_INTERFACE,
 641                                                 "Release");
 642         if (message == NULL)
 643                 return;
 644
 645         dbus_message_set_no_reply(message, TRUE);
 646
 647         g_dbus_send_message(connection, message);
 648 }
 649
 650 static int session_disconnect(struct connman_session *session)
 651 {
 652         DBG("session %p, %s", session, session->owner);
 653
 654         if (session->notify_watch > 0)
 655                 g_dbus_remove_watch(connection, session->notify_watch);
 656
 657         g_dbus_unregister_interface(connection, session->session_path,
 658                                                 CONNMAN_SESSION_INTERFACE);
 659
 660         g_hash_table_remove(session_hash, session->session_path);
 661
 662         return 0;
 663 }
 664
 665 static void owner_disconnect(DBusConnection *conn, void *user_data)
 666 {
 667         struct connman_session *session = user_data;
 668
 669         DBG("session %p, %s died", session, session->owner);
 670
 671         session_disconnect(session);
 672 }
 673
 674 static DBusMessage *destroy_session(DBusConnection *conn,
 675                                         DBusMessage *msg, void *user_data)
 676 {
 677         struct connman_session *session = user_data;
 678
 679         DBG("session %p", session);
 680
 681         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 682 }
 683
 684 static gboolean session_changed_connect(gpointer user_data)
 685 {
 686         struct connman_session *session = user_data;
 687         struct session_info *info = &session->info;
 688
 689         __connman_service_connect(info->service);
 690
 691         return FALSE;
 692 }
 693
 694 static void update_service(struct connman_session *session)
 695 {
 696         struct session_info *info = &session->info;
 697         int idx;
 698
 699         if (info->service != NULL) {
 700                 info->bearer = session2bearer(session);
 701                 info->online = __connman_service_is_connected(info->service);
 702                 info->name = __connman_service_get_name(info->service);
 703                 idx = __connman_service_get_index(info->service);
 704                 info->ifname = connman_inet_ifname(idx);
 705
 706         } else {
 707                 info->bearer = "";
 708                 info->online = FALSE;
 709                 info->name = "";
 710                 info->ifname = "";
 711         }
 712 }
 713
 714 static void session_changed(struct connman_session *session)
 715 {
 716         struct session_info *info = &session->info;
 717         struct session_info *info_last = &session->info_last;
 718         struct connman_service *service = NULL;
 719         GSourceFunc callback = NULL;
 720         GSequenceIter *iter;
 721
 722         /*
 723          * TODO: This only a placeholder for the 'real' algorithm to
 724          * play a bit around. So we are going to improve it step by step.
 725          */
 726
 727         if (info->connect == FALSE) {
 728                 if (info->service != NULL)
 729                         __connman_service_disconnect(info->service);
 730                 info->service = NULL;
 731                 goto out;
 732         }
 733
 734         iter = g_sequence_get_begin_iter(session->service_list);
 735
 736         while (g_sequence_iter_is_end(iter) == FALSE) {
 737                 service = g_sequence_get(iter);
 738
 739                 if (__connman_service_is_connecting(service) == TRUE ||
 740                                 __connman_service_is_connected(service) == TRUE) {
 741                         break;
 742                 }
 743
 744                 if (__connman_service_is_idle(service) == TRUE &&
 745                                 info->connect == TRUE) {
 746                         callback = session_changed_connect;
 747                         break;
 748                 }
 749
 750                 service = NULL;
 751
 752                 iter = g_sequence_iter_next(iter);
 753         }
 754
 755         if (info->service != NULL && info->service != service) {
 756                 __connman_service_disconnect(info->service);
 757                 info->service = NULL;
 758         }
 759
 760         if (service != NULL) {
 761                 info->service = service;
 762
 763                 if (callback != NULL)
 764                         callback(session);
 765         }
 766
 767 out:
 768         if (info->service != info_last->service)
 769                 update_service(session);
 770 }
 771
 772 static gboolean session_cb(gpointer user_data)
 773 {
 774         struct connman_session *session = user_data;
 775
 776         session_changed(session);
 777         session_notify(session);
 778
 779         return FALSE;
 780 }
 781
 782 static DBusMessage *connect_session(DBusConnection *conn,
 783                                         DBusMessage *msg, void *user_data)
 784 {
 785         struct connman_session *session = user_data;
 786         struct session_info *info = &session->info;
 787
 788         DBG("session %p", session);
 789
 790         info->connect = TRUE;
 791
 792         g_timeout_add_seconds(0, session_cb, session);
 793
 794         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 795 }
 796
 797 static DBusMessage *disconnect_session(DBusConnection *conn,
 798                                         DBusMessage *msg, void *user_data)
 799 {
 800         struct connman_session *session = user_data;
 801         struct session_info *info = &session->info;
 802
 803         DBG("session %p", session);
 804
 805         info->connect = FALSE;
 806
 807         g_timeout_add_seconds(0, session_cb, session);
 808
 809         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 810 }
 811
 812 static void print_name(gpointer data, gpointer user_data)
 813 {
 814         struct connman_service *service = data;
 815
 816         DBG("service %p type %s name %s", service,
 817                 service2bearer(connman_service_get_type(service)),
 818                 __connman_service_get_name(service));
 819 }
 820
 821 static void update_allowed_bearers(struct connman_session *session)
 822 {
 823         if (session->service_list != NULL)
 824                 g_sequence_free(session->service_list);
 825
 826         session->service_list = __connman_service_get_list(session,
 827                                                                 service_match);
 828         g_sequence_sort(session->service_list, sort_services, session);
 829         g_sequence_foreach(session->service_list, print_name, NULL);
 830 }
 831
 832 static void update_ecall(struct connman_session *session)
 833 {
 834         struct session_info *info = &session->info;
 835         struct session_info *info_last = &session->info_last;
 836         GHashTableIter iter;
 837         gpointer key, value;
 838         struct connman_session *session_iter;
 839
 840         DBG("ecall_session %p ecall %d -> %d", ecall_session,
 841                 info_last->ecall, info->ecall);
 842
 843         if (ecall_session == NULL) {
 844                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
 845                         goto err;
 846
 847                 ecall_session = session;
 848         } else if (ecall_session == session) {
 849                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
 850                         goto err;
 851
 852                 ecall_session = NULL;
 853         } else {
 854                 goto err;
 855         }
 856
 857         g_hash_table_iter_init(&iter, session_hash);
 858
 859         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 860                 session_iter = value;
 861
 862                 if (session_iter == session)
 863                         continue;
 864
 865                 session_iter->info.ecall = info->ecall;
 866
 867                 g_timeout_add_seconds(0, session_cb, session_iter);
 868         }
 869
 870         session->info_dirty = TRUE;
 871         return;
 872
 873 err:
 874         /* not a valid transition */
 875         info->ecall = info_last->ecall;
 876 }
 877
 878 static DBusMessage *change_session(DBusConnection *conn,
 879                                         DBusMessage *msg, void *user_data)
 880 {
 881         struct connman_session *session = user_data;
 882         struct session_info *info = &session->info;
 883         struct session_info *info_last = &session->info_last;
 884         DBusMessageIter iter, value;
 885         const char *name;
 886         GSList *allowed_bearers;
 887         int err;
 888
 889         DBG("session %p", session);
 890         if (dbus_message_iter_init(msg, &iter) == FALSE)
 891                 return __connman_error_invalid_arguments(msg);
 892
 893         dbus_message_iter_get_basic(&iter, &name);
 894         dbus_message_iter_next(&iter);
 895         dbus_message_iter_recurse(&iter, &value);
 896
 897         switch (dbus_message_iter_get_arg_type(&value)) {
 898         case DBUS_TYPE_ARRAY:
 899                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
 900                         allowed_bearers = session_parse_allowed_bearers(&value);
 901
 902                         g_slist_foreach(info->allowed_bearers,
 903                                         cleanup_bearer_info, NULL);
 904                         g_slist_free(info->allowed_bearers);
 905
 906                         if (allowed_bearers == NULL) {
 907                                 allowed_bearers = session_allowed_bearers_any();
 908
 909                                 if (allowed_bearers == NULL)
 910                                         return __connman_error_failed(msg, ENOMEM);
 911                         }
 912
 913                         info->allowed_bearers = allowed_bearers;
 914
 915                         update_allowed_bearers(session);
 916                         session->info_dirty = TRUE;
 917                 } else {
 918                         goto err;
 919                 }
 920                 break;
 921         case DBUS_TYPE_BOOLEAN:
 922                 if (g_str_equal(name, "Priority") == TRUE) {
 923                         dbus_message_iter_get_basic(&value,
 924                                         &info->priority);
 925
 926                         if (info_last->priority != info->priority)
 927                                 session->info_dirty = TRUE;
 928                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
 929                         dbus_message_iter_get_basic(&value,
 930                                         &info->avoid_handover);
 931
 932                         if (info_last->avoid_handover != info->avoid_handover)
 933                                 session->info_dirty = TRUE;
 934                         } else if (g_str_equal(name, "StayConnected") == TRUE) {
 935                         dbus_message_iter_get_basic(&value,
 936                                         &info->stay_connected);
 937
 938                         if (info_last->stay_connected != info->stay_connected)
 939                                 session->info_dirty = TRUE;
 940                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
 941                         dbus_message_iter_get_basic(&value,
 942                                         &info->ecall);
 943
 944                         update_ecall(session);
 945                 } else {
 946                         goto err;
 947                 }
 948                 break;
 949         case DBUS_TYPE_UINT32:
 950                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
 951                         dbus_message_iter_get_basic(&value,
 952                                         &info->periodic_connect);
 953
 954                         if (info_last->periodic_connect != info->periodic_connect)
 955                                 session->info_dirty = TRUE;
 956                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
 957                         dbus_message_iter_get_basic(&value,
 958                                         &info->idle_timeout);
 959
 960                         if (info_last->idle_timeout != info->idle_timeout)
 961                                 session->info_dirty = TRUE;
 962                 } else {
 963                         goto err;
 964                 }
 965                 break;
 966         case DBUS_TYPE_STRING:
 967                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
 968                         const char *val;
 969                         dbus_message_iter_get_basic(&value, &val);
 970                         info->roaming_policy =
 971                                         string2roamingpolicy(val);
 972
 973                         if (info_last->roaming_policy != info->roaming_policy)
 974                                 session->info_dirty = TRUE;
 975                 } else {
 976                         goto err;
 977                 }
 978                 break;
 979         default:
 980                 goto err;
 981         }
 982
 983         err = session_notify(session);
 984         if (err < 0)
 985                 __connman_error_failed(msg, -err);
 986
 987         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 988
 989 err:
 990         return __connman_error_invalid_arguments(msg);
 991 }
 992
 993 static GDBusMethodTable session_methods[] = {
 994         { "Destroy",    "",   "", destroy_session    },
 995         { "Connect",    "",   "", connect_session    },
 996         { "Disconnect", "",   "", disconnect_session },
 997         { "Change",     "sv", "", change_session     },
 998         { },
 999 };
1000
1001 int __connman_session_create(DBusMessage *msg)
1002 {
1003         const char *owner, *notify_path;
1004         char *session_path;
1005         DBusMessageIter iter, array;
1006         struct connman_session *session;
1007         struct session_info *info, *info_last;
1008
1009         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1010         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1011         enum connman_session_roaming_policy roaming_policy =
1012                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1013         GSList *allowed_bearers = NULL;
1014         unsigned int periodic_connect = 0;
1015         unsigned int idle_timeout = 0;
1016
1017         int err;
1018
1019         owner = dbus_message_get_sender(msg);
1020
1021         DBG("owner %s", owner);
1022
1023         dbus_message_iter_init(msg, &iter);
1024         dbus_message_iter_recurse(&iter, &array);
1025
1026         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1027                 DBusMessageIter entry, value;
1028                 const char *key, *val;
1029
1030                 dbus_message_iter_recurse(&array, &entry);
1031                 dbus_message_iter_get_basic(&entry, &key);
1032
1033                 dbus_message_iter_next(&entry);
1034                 dbus_message_iter_recurse(&entry, &value);
1035
1036                 switch (dbus_message_iter_get_arg_type(&value)) {
1037                 case DBUS_TYPE_ARRAY:
1038                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1039                                 allowed_bearers =
1040                                         session_parse_allowed_bearers(&value);
1041                         } else {
1042                                 return -EINVAL;
1043                         }
1044                         break;
1045                 case DBUS_TYPE_BOOLEAN:
1046                         if (g_str_equal(key, "Priority") == TRUE) {
1047                                 dbus_message_iter_get_basic(&value,
1048                                                         &priority);
1049                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1050                                 dbus_message_iter_get_basic(&value,
1051                                                         &avoid_handover);
1052                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1053                                 dbus_message_iter_get_basic(&value,
1054                                                         &stay_connected);
1055                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1056                                 dbus_message_iter_get_basic(&value,
1057                                                         &ecall);
1058                         } else {
1059                                 return -EINVAL;
1060                         }
1061                         break;
1062                 case DBUS_TYPE_UINT32:
1063                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1064                                 dbus_message_iter_get_basic(&value,
1065                                                         &periodic_connect);
1066                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1067                                 dbus_message_iter_get_basic(&value,
1068                                                         &idle_timeout);
1069                         } else {
1070                                 return -EINVAL;
1071                         }
1072                         break;
1073                 case DBUS_TYPE_STRING:
1074                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1075                                 dbus_message_iter_get_basic(&value, &val);
1076                                 roaming_policy = string2roamingpolicy(val);
1077                         } else {
1078                                 return -EINVAL;
1079                         }
1080                 }
1081                 dbus_message_iter_next(&array);
1082         }
1083
1084         dbus_message_iter_next(&iter);
1085         dbus_message_iter_get_basic(&iter, &notify_path);
1086
1087         if (notify_path == NULL) {
1088                 session_path = NULL;
1089                 err = -EINVAL;
1090                 goto err;
1091         }
1092
1093         session_path = g_strdup_printf("/sessions%s", notify_path);
1094         if (session_path == NULL) {
1095                 err = -ENOMEM;
1096                 goto err;
1097         }
1098
1099         session = g_hash_table_lookup(session_hash, session_path);
1100         if (session != NULL) {
1101                 err = -EEXIST;
1102                 goto err;
1103         }
1104
1105         session = g_try_new0(struct connman_session, 1);
1106         if (session == NULL) {
1107                 err = -ENOMEM;
1108                 goto err;
1109         }
1110
1111         info = &session->info;
1112         info_last = &session->info_last;
1113
1114         session->owner = g_strdup(owner);
1115         session->session_path = session_path;
1116         session->notify_path = g_strdup(notify_path);
1117         session->notify_watch =
1118                 g_dbus_add_disconnect_watch(connection, session->owner,
1119                                         owner_disconnect, session, NULL);
1120
1121         info->bearer = "";
1122         info->online = FALSE;
1123         info->priority = priority;
1124         info->avoid_handover = avoid_handover;
1125         info->stay_connected = stay_connected;
1126         info->periodic_connect = periodic_connect;
1127         info->idle_timeout = idle_timeout;
1128         info->ecall = ecall;
1129         info->roaming_policy = roaming_policy;
1130         info->service = NULL;
1131         info->marker = 0;
1132
1133         if (allowed_bearers == NULL) {
1134                 info->allowed_bearers =
1135                                 session_allowed_bearers_any();
1136
1137                 if (info->allowed_bearers == NULL) {
1138                         err = -ENOMEM;
1139                         goto err;
1140                 }
1141         } else {
1142                 info->allowed_bearers = allowed_bearers;
1143         }
1144
1145         update_allowed_bearers(session);
1146         update_service(session);
1147
1148         info_last->bearer = info->bearer;
1149         info_last->online = info->priority;
1150         info_last->avoid_handover = info->avoid_handover;
1151         info_last->stay_connected = info->stay_connected;
1152         info_last->periodic_connect = info->periodic_connect;
1153         info_last->idle_timeout = info->idle_timeout;
1154         info_last->ecall = info->ecall;
1155         info_last->roaming_policy = info->roaming_policy;
1156         info_last->service = info->service;
1157         info_last->marker = info->marker;
1158         info_last->allowed_bearers = info->allowed_bearers;
1159
1160         session->info_dirty = TRUE;
1161         session->append_all = TRUE;
1162
1163         g_hash_table_replace(session_hash, session->session_path, session);
1164
1165         DBG("add %s", session->session_path);
1166
1167         if (g_dbus_register_interface(connection, session->session_path,
1168                                         CONNMAN_SESSION_INTERFACE,
1169                                         session_methods, NULL,
1170                                         NULL, session, NULL) == FALSE) {
1171                 connman_error("Failed to register %s", session->session_path);
1172                 g_hash_table_remove(session_hash, session->session_path);
1173                 session = NULL;
1174
1175                 err = -EINVAL;
1176                 goto err;
1177         }
1178
1179         g_dbus_send_reply(connection, msg,
1180                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1181                                 DBUS_TYPE_INVALID);
1182
1183         g_timeout_add_seconds(0, session_cb, session);
1184
1185         return 0;
1186
1187 err:
1188         connman_error("Failed to create session");
1189         g_free(session_path);
1190
1191         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1192         g_slist_free(allowed_bearers);
1193
1194         return err;
1195 }
1196
1197 int __connman_session_destroy(DBusMessage *msg)
1198 {
1199         const char *owner, *session_path;
1200         struct connman_session *session;
1201
1202         owner = dbus_message_get_sender(msg);
1203
1204         DBG("owner %s", owner);
1205
1206         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1207                                                         DBUS_TYPE_INVALID);
1208         if (session_path == NULL)
1209                 return -EINVAL;
1210
1211         session = g_hash_table_lookup(session_hash, session_path);
1212         if (session == NULL)
1213                 return -EINVAL;
1214
1215         if (g_strcmp0(owner, session->owner) != 0)
1216                 return -EACCES;
1217
1218         session_disconnect(session);
1219
1220         return 0;
1221 }
1222
1223 connman_bool_t __connman_session_mode()
1224 {
1225         return sessionmode;
1226 }
1227
1228 void __connman_session_set_mode(connman_bool_t enable)
1229 {
1230         DBG("enable %d", enable);
1231
1232         if (sessionmode == enable)
1233                 return;
1234
1235         sessionmode = enable;
1236
1237         if (sessionmode == TRUE)
1238                 __connman_service_disconnect_all();
1239 }
1240
1241 static void service_add(struct connman_service *service)
1242 {
1243         GHashTableIter iter;
1244         gpointer key, value;
1245         struct connman_session *session;
1246
1247         DBG("service %p", service);
1248
1249         g_hash_table_iter_init(&iter, session_hash);
1250
1251         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1252                 session = value;
1253
1254                 if (service_match(session, service) == FALSE)
1255                         continue;
1256
1257                 g_sequence_insert_sorted(session->service_list, service,
1258                                                 sort_services, session);
1259
1260                 session_cb(session);
1261         }
1262 }
1263
1264 static gint service_in_session(gconstpointer a, gconstpointer b,
1265                                 gpointer user_data)
1266 {
1267         if (a == b)
1268                 return 0;
1269
1270         return -1;
1271 }
1272
1273 static void service_remove(struct connman_service *service)
1274 {
1275
1276         GHashTableIter iter;
1277         gpointer key, value;
1278         GSequenceIter *seq_iter;
1279         struct connman_session *session;
1280         struct session_info *info;
1281         struct connman_service *found_service;
1282
1283         DBG("service %p", service);
1284
1285         g_hash_table_iter_init(&iter, session_hash);
1286
1287         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1288                 session = value;
1289                 info = &session->info;
1290
1291                 if (session->service_list == NULL)
1292                         continue;
1293
1294                 seq_iter = g_sequence_search(session->service_list, service,
1295                                                 service_in_session, NULL);
1296                 if (g_sequence_iter_is_end(seq_iter) == TRUE)
1297                         continue;
1298
1299                 g_sequence_remove(seq_iter);
1300
1301                 found_service = g_sequence_get(seq_iter);
1302                 if (found_service != info->service)
1303                         continue;
1304
1305                 info->service = NULL;
1306                 session_cb(session);
1307         }
1308 }
1309
1310 static void service_state_changed(struct connman_service *service,
1311                                         enum connman_service_state state)
1312 {
1313         GHashTableIter iter;
1314         gpointer key, value;
1315         struct connman_session *session;
1316         struct session_info *info;
1317         connman_bool_t online;
1318
1319         DBG("service %p state %d", service, state);
1320
1321         g_hash_table_iter_init(&iter, session_hash);
1322
1323         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1324                 session = value;
1325                 info = &session->info;
1326
1327                 if (info->service == service) {
1328                         online = __connman_service_is_connected(service);
1329                         if (info->online == online)
1330                                 continue;
1331
1332                         info->online = online;
1333                         session_cb(session);
1334                 }
1335         }
1336 }
1337
1338 static void ipconfig_changed(struct connman_service *service,
1339                                 struct connman_ipconfig *ipconfig)
1340 {
1341         GHashTableIter iter;
1342         gpointer key, value;
1343         struct connman_session *session;
1344         struct session_info *info;
1345         enum connman_ipconfig_type type;
1346
1347         DBG("service %p ipconfig %p", service, ipconfig);
1348
1349         type = __connman_ipconfig_get_config_type(ipconfig);
1350
1351         g_hash_table_iter_init(&iter, session_hash);
1352
1353         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1354                 session = value;
1355                 info = &session->info;
1356
1357                 if (info->service == service) {
1358                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1359                                 ipconfig_ipv4_changed(session);
1360                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1361                                 ipconfig_ipv6_changed(session);
1362                 }
1363         }
1364 }
1365
1366 static struct connman_notifier session_notifier = {
1367         .name                   = "session",
1368         .service_add            = service_add,
1369         .service_remove         = service_remove,
1370         .service_state_changed  = service_state_changed,
1371         .ipconfig_changed       = ipconfig_changed,
1372 };
1373
1374 int __connman_session_init(void)
1375 {
1376         int err;
1377
1378         DBG("");
1379
1380         connection = connman_dbus_get_connection();
1381         if (connection == NULL)
1382                 return -1;
1383
1384         err = connman_notifier_register(&session_notifier);
1385         if (err < 0) {
1386                 dbus_connection_unref(connection);
1387                 return err;
1388         }
1389
1390         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1391                                                 NULL, cleanup_session);
1392
1393         sessionmode = FALSE;
1394         return 0;
1395 }
1396
1397 void __connman_session_cleanup(void)
1398 {
1399         DBG("");
1400
1401         if (connection == NULL)
1402                 return;
1403
1404         connman_notifier_unregister(&session_notifier);
1405
1406         g_hash_table_foreach(session_hash, release_session, NULL);
1407         g_hash_table_destroy(session_hash);
1408
1409         dbus_connection_unref(connection);
1410 }