src/session.c

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