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