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_online_service(struct connman_session *session,
 816                                         struct service_entry *entry)
 817 {
 818         struct session_info *info = session->info;
 819
 820         info->online = TRUE;
 821
 822         info->entry = entry;
 823         info->entry->reason = info->reason;
 824
 825         if (explicit_connect(info->reason) == FALSE)
 826                 return;
 827
 828         __connman_service_session_inc(info->entry->service);
 829 }
 830
 831 static void select_offline_service(struct connman_session *session,
 832                                         struct service_entry *entry)
 833 {
 834         struct session_info *info = session->info;
 835
 836         if (explicit_connect(info->reason) == FALSE) {
 837                 /* Don't select this service. It is not online and we
 838                  * don't call connect on it. This happends for example
 839                  * when the system is idle and we create a new session
 840                  * which is in free ride mode.
 841                  */
 842                 return;
 843         }
 844
 845         info->online = FALSE;
 846
 847         info->entry = entry;
 848         info->entry->reason = info->reason;
 849
 850         __connman_service_session_inc(info->entry->service);
 851         g_timeout_add_seconds(0, call_connect, info->entry->service);
 852 }
 853
 854 static void select_service(struct connman_session *session,
 855                                 struct service_entry *entry)
 856 {
 857         DBG("session %p service %p", session, entry->service);
 858
 859         deselect_previous_service(session, entry);
 860
 861         if (is_online(entry->state) == TRUE)
 862                 select_online_service(session, entry);
 863         else
 864                 select_offline_service(session, entry);
 865 }
 866
 867 static void select_and_connect(struct connman_session *session,
 868                                 enum connman_session_reason reason)
 869 {
 870         struct session_info *info = session->info;
 871         struct service_entry *entry = NULL;
 872         GSequenceIter *iter;
 873
 874         DBG("session %p reason %s", session, reason2string(reason));
 875
 876         info->reason = reason;
 877
 878         iter = g_sequence_get_begin_iter(session->service_list);
 879
 880         while (g_sequence_iter_is_end(iter) == FALSE) {
 881                 entry = g_sequence_get(iter);
 882
 883                 switch (entry->state) {
 884                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 885                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 886                 case CONNMAN_SERVICE_STATE_READY:
 887                 case CONNMAN_SERVICE_STATE_ONLINE:
 888                 case CONNMAN_SERVICE_STATE_IDLE:
 889                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 890                         select_service(session, entry);
 891                         return;
 892                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 893                 case CONNMAN_SERVICE_STATE_FAILURE:
 894                         break;
 895                 }
 896
 897                 iter = g_sequence_iter_next(iter);
 898         }
 899 }
 900
 901 static void session_changed(struct connman_session *session,
 902                                 enum connman_session_trigger trigger)
 903 {
 904         struct session_info *info = session->info;
 905         struct session_info *info_last = session->info_last;
 906         GSequenceIter *iter;
 907
 908         /*
 909          * TODO: This only a placeholder for the 'real' algorithm to
 910          * play a bit around. So we are going to improve it step by step.
 911          */
 912
 913         DBG("session %p trigger %s", session, trigger2string(trigger));
 914
 915         switch (trigger) {
 916         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 917                 DBG("ignore session changed event");
 918                 return;
 919         case CONNMAN_SESSION_TRIGGER_SETTING:
 920                 if (info->entry != NULL) {
 921                         iter = g_hash_table_lookup(session->service_hash,
 922                                                         info->entry->service);
 923                         if (iter == NULL) {
 924                                 /*
 925                                  * This service is not part of this
 926                                  * session anymore.
 927                                  */
 928                                 test_and_disconnect(session);
 929                         }
 930                 }
 931
 932                 if (info->online == FALSE) {
 933                         select_and_connect(session,
 934                                         CONNMAN_SESSION_REASON_FREE_RIDE);
 935                 }
 936
 937                 break;
 938         case CONNMAN_SESSION_TRIGGER_CONNECT:
 939                 if (info->online == TRUE) {
 940                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
 941                                 break;
 942                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
 943                         __connman_service_session_inc(info->entry->service);
 944                         break;
 945                 }
 946
 947                 select_and_connect(session,
 948                                 CONNMAN_SESSION_REASON_CONNECT);
 949
 950                 break;
 951         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 952                 test_and_disconnect(session);
 953
 954                 break;
 955         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 956                 if (info->online == TRUE) {
 957                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
 958                         __connman_service_session_inc(info->entry->service);
 959                         break;
 960                 }
 961
 962                 select_and_connect(session,
 963                                 CONNMAN_SESSION_REASON_PERIODIC);
 964
 965                 break;
 966         case CONNMAN_SESSION_TRIGGER_SERVICE:
 967                 if (info->entry != NULL &&
 968                                 (is_connecting(info->entry->state) == TRUE ||
 969                                         is_online(info->entry->state) == TRUE)) {
 970                         break;
 971                 }
 972
 973                 switch (info->reason) {
 974                 case CONNMAN_SESSION_REASON_CONNECT:
 975                         /*
 976                          * We are not online, we are not connecting, that
 977                          * means we could still have a valid info->entry.
 978                          * Though something has changed from the service layer.
 979                          * Therefore we want to restart the algorithm. Before we
 980                          * can do that we have to cleanup a potientional old entry.
 981                          */
 982                         test_and_disconnect(session);
 983                         info->reason = CONNMAN_SESSION_REASON_CONNECT; /* restore value */
 984
 985                         DBG("Retry to find a matching session");
 986                         /*
 987                          * The user called Connect() but there was no
 988                          * matching session available at this point.
 989                          * Now there might be a new one. Let's retry
 990                          * to select and connect
 991                          */
 992                         select_and_connect(session,
 993                                         CONNMAN_SESSION_REASON_CONNECT);
 994                         break;
 995                 case CONNMAN_SESSION_REASON_PERIODIC:
 996                 case CONNMAN_SESSION_REASON_FREE_RIDE:
 997                         if (info->stay_connected == TRUE) {
 998                                 DBG("StayConnected");
 999                                 select_and_connect(session,
1000                                         CONNMAN_SESSION_REASON_CONNECT);
1001                         } else {
1002                                 select_and_connect(session,
1003                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1004                         }
1005                         break;
1006                 case CONNMAN_SESSION_REASON_UNKNOWN:
1007                         break;
1008                 }
1009                 break;
1010         case CONNMAN_SESSION_TRIGGER_ECALL:
1011                 if (info->online == FALSE && info->entry != NULL &&
1012                                 info->entry->service != NULL) {
1013                         test_and_disconnect(session);
1014                 }
1015
1016                 break;
1017         }
1018
1019         if (info->entry != info_last->entry)
1020                 session->info_dirty = TRUE;
1021
1022         session_notify(session);
1023 }
1024
1025 static DBusMessage *connect_session(DBusConnection *conn,
1026                                         DBusMessage *msg, void *user_data)
1027 {
1028         struct connman_session *session = user_data;
1029
1030         DBG("session %p", session);
1031
1032         if (ecall_session != NULL && ecall_session != session)
1033                 return __connman_error_failed(msg, EBUSY);
1034
1035         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1036
1037         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1038 }
1039
1040 static DBusMessage *disconnect_session(DBusConnection *conn,
1041                                         DBusMessage *msg, void *user_data)
1042 {
1043         struct connman_session *session = user_data;
1044
1045         DBG("session %p", session);
1046
1047         if (ecall_session != NULL && ecall_session != session)
1048                 return __connman_error_failed(msg, EBUSY);
1049
1050         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1051
1052         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1053 }
1054
1055 static struct service_entry *create_service_entry(struct connman_service *service,
1056                                         const char *name,
1057                                         enum connman_service_state state)
1058 {
1059         struct service_entry *entry;
1060         enum connman_service_type type;
1061         int idx;
1062
1063         entry = g_try_new0(struct service_entry, 1);
1064         if (entry == NULL)
1065                 return entry;
1066
1067         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
1068         entry->state = state;
1069         if (name != NULL)
1070                 entry->name = name;
1071         else
1072                 entry->name = "";
1073         entry->service = service;
1074
1075         idx = __connman_service_get_index(entry->service);
1076         entry->ifname = connman_inet_ifname(idx);
1077         if (entry->ifname == NULL)
1078                 entry->ifname = g_strdup("");
1079
1080         type = connman_service_get_type(entry->service);
1081         entry->bearer = service2bearer(type);
1082
1083         return entry;
1084 }
1085
1086 static void destroy_service_entry(gpointer data)
1087 {
1088         struct service_entry *entry = data;
1089
1090         g_free(entry->ifname);
1091
1092         g_free(entry);
1093 }
1094
1095 static void update_allowed_bearers(struct connman_session *session)
1096 {
1097         struct service_entry *entry;
1098         GSequenceIter *iter;
1099
1100         if (session->service_list != NULL) {
1101                 g_hash_table_remove_all(session->service_hash);
1102                 g_sequence_free(session->service_list);
1103         }
1104
1105         session->service_list = __connman_service_get_list(session,
1106                                                         service_match,
1107                                                         create_service_entry,
1108                                                         destroy_service_entry);
1109
1110         g_sequence_sort(session->service_list, sort_services, session);
1111
1112         iter = g_sequence_get_begin_iter(session->service_list);
1113
1114         while (g_sequence_iter_is_end(iter) == FALSE) {
1115                 entry = g_sequence_get(iter);
1116
1117                 DBG("service %p type %s name %s", entry->service,
1118                         service2bearer(connman_service_get_type(entry->service)),
1119                         entry->name);
1120
1121                 g_hash_table_replace(session->service_hash,
1122                                         entry->service, iter);
1123
1124                 iter = g_sequence_iter_next(iter);
1125         }
1126
1127         session->info_dirty = TRUE;
1128 }
1129
1130 static void update_ecall_sessions(struct connman_session *session)
1131 {
1132         struct session_info *info = session->info;
1133         struct connman_session *session_iter;
1134         GHashTableIter iter;
1135         gpointer key, value;
1136
1137         g_hash_table_iter_init(&iter, session_hash);
1138
1139         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1140                 session_iter = value;
1141
1142                 if (session_iter == session)
1143                         continue;
1144
1145                 session_iter->info->ecall = info->ecall;
1146                 session_iter->info_dirty = TRUE;
1147
1148                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1149         }
1150 }
1151
1152 static void update_ecall(struct connman_session *session)
1153 {
1154         struct session_info *info = session->info;
1155         struct session_info *info_last = session->info_last;
1156
1157         DBG("session %p ecall_session %p ecall %d -> %d", session,
1158                 ecall_session, info_last->ecall, info->ecall);
1159
1160         if (ecall_session == NULL) {
1161                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1162                         goto err;
1163
1164                 ecall_session = session;
1165         } else if (ecall_session == session) {
1166                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1167                         goto err;
1168
1169                 ecall_session = NULL;
1170         } else {
1171                 goto err;
1172         }
1173
1174         update_ecall_sessions(session);
1175
1176         session->info_dirty = TRUE;
1177         return;
1178
1179 err:
1180         /* not a valid transition */
1181         info->ecall = info_last->ecall;
1182 }
1183
1184 static DBusMessage *change_session(DBusConnection *conn,
1185                                         DBusMessage *msg, void *user_data)
1186 {
1187         struct connman_session *session = user_data;
1188         struct session_info *info = session->info;
1189         struct session_info *info_last = session->info_last;
1190         DBusMessageIter iter, value;
1191         const char *name;
1192         GSList *allowed_bearers;
1193
1194         DBG("session %p", session);
1195         if (dbus_message_iter_init(msg, &iter) == FALSE)
1196                 return __connman_error_invalid_arguments(msg);
1197
1198         dbus_message_iter_get_basic(&iter, &name);
1199         dbus_message_iter_next(&iter);
1200         dbus_message_iter_recurse(&iter, &value);
1201
1202         switch (dbus_message_iter_get_arg_type(&value)) {
1203         case DBUS_TYPE_ARRAY:
1204                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1205                         allowed_bearers = session_parse_allowed_bearers(&value);
1206
1207                         g_slist_foreach(info->allowed_bearers,
1208                                         cleanup_bearer_info, NULL);
1209                         g_slist_free(info->allowed_bearers);
1210
1211                         if (allowed_bearers == NULL) {
1212                                 allowed_bearers = session_allowed_bearers_any();
1213
1214                                 if (allowed_bearers == NULL)
1215                                         return __connman_error_failed(msg, ENOMEM);
1216                         }
1217
1218                         info->allowed_bearers = allowed_bearers;
1219
1220                         update_allowed_bearers(session);
1221                 } else {
1222                         goto err;
1223                 }
1224                 break;
1225         case DBUS_TYPE_BOOLEAN:
1226                 if (g_str_equal(name, "Priority") == TRUE) {
1227                         dbus_message_iter_get_basic(&value,
1228                                         &info->priority);
1229
1230                         if (info_last->priority != info->priority)
1231                                 session->info_dirty = TRUE;
1232                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1233                         dbus_message_iter_get_basic(&value,
1234                                         &info->avoid_handover);
1235
1236                         if (info_last->avoid_handover != info->avoid_handover)
1237                                 session->info_dirty = TRUE;
1238                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1239                         dbus_message_iter_get_basic(&value,
1240                                         &info->stay_connected);
1241
1242                         if (info_last->stay_connected != info->stay_connected)
1243                                 session->info_dirty = TRUE;
1244                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1245                         dbus_message_iter_get_basic(&value,
1246                                         &info->ecall);
1247
1248                         update_ecall(session);
1249                 } else {
1250                         goto err;
1251                 }
1252                 break;
1253         case DBUS_TYPE_UINT32:
1254                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1255                         dbus_message_iter_get_basic(&value,
1256                                         &info->periodic_connect);
1257
1258                         if (info_last->periodic_connect != info->periodic_connect)
1259                                 session->info_dirty = TRUE;
1260                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1261                         dbus_message_iter_get_basic(&value,
1262                                         &info->idle_timeout);
1263
1264                         if (info_last->idle_timeout != info->idle_timeout)
1265                                 session->info_dirty = TRUE;
1266                 } else {
1267                         goto err;
1268                 }
1269                 break;
1270         case DBUS_TYPE_STRING:
1271                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1272                         const char *val;
1273                         dbus_message_iter_get_basic(&value, &val);
1274                         info->roaming_policy =
1275                                         string2roamingpolicy(val);
1276
1277                         if (info_last->roaming_policy != info->roaming_policy)
1278                                 session->info_dirty = TRUE;
1279                 } else {
1280                         goto err;
1281                 }
1282                 break;
1283         default:
1284                 goto err;
1285         }
1286
1287         if (session->info_dirty == TRUE)
1288                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1289
1290         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1291
1292 err:
1293         return __connman_error_invalid_arguments(msg);
1294 }
1295
1296 static void release_session(gpointer key, gpointer value, gpointer user_data)
1297 {
1298         struct connman_session *session = value;
1299         DBusMessage *message;
1300
1301         DBG("owner %s path %s", session->owner, session->notify_path);
1302
1303         if (session->notify_watch > 0)
1304                 g_dbus_remove_watch(connection, session->notify_watch);
1305
1306         g_dbus_unregister_interface(connection, session->session_path,
1307                                                 CONNMAN_SESSION_INTERFACE);
1308
1309         message = dbus_message_new_method_call(session->owner,
1310                                                 session->notify_path,
1311                                                 CONNMAN_NOTIFICATION_INTERFACE,
1312                                                 "Release");
1313         if (message == NULL)
1314                 return;
1315
1316         dbus_message_set_no_reply(message, TRUE);
1317
1318         g_dbus_send_message(connection, message);
1319 }
1320
1321 static int session_disconnect(struct connman_session *session)
1322 {
1323         DBG("session %p, %s", session, session->owner);
1324
1325         if (session->notify_watch > 0)
1326                 g_dbus_remove_watch(connection, session->notify_watch);
1327
1328         g_dbus_unregister_interface(connection, session->session_path,
1329                                                 CONNMAN_SESSION_INTERFACE);
1330
1331         test_and_disconnect(session);
1332
1333         g_hash_table_remove(session_hash, session->session_path);
1334
1335         return 0;
1336 }
1337
1338 static void owner_disconnect(DBusConnection *conn, void *user_data)
1339 {
1340         struct connman_session *session = user_data;
1341
1342         DBG("session %p, %s died", session, session->owner);
1343
1344         session_disconnect(session);
1345 }
1346
1347 static DBusMessage *destroy_session(DBusConnection *conn,
1348                                         DBusMessage *msg, void *user_data)
1349 {
1350         struct connman_session *session = user_data;
1351
1352         DBG("session %p", session);
1353
1354         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1355 }
1356
1357 static GDBusMethodTable session_methods[] = {
1358         { "Destroy",    "",   "", destroy_session    },
1359         { "Connect",    "",   "", connect_session    },
1360         { "Disconnect", "",   "", disconnect_session },
1361         { "Change",     "sv", "", change_session     },
1362         { },
1363 };
1364
1365 int __connman_session_create(DBusMessage *msg)
1366 {
1367         const char *owner, *notify_path;
1368         char *session_path = NULL;
1369         DBusMessageIter iter, array;
1370         struct connman_session *session = NULL;
1371         struct session_info *info, *info_last;
1372
1373         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1374         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1375         enum connman_session_roaming_policy roaming_policy =
1376                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1377         GSList *allowed_bearers = NULL;
1378         unsigned int periodic_connect = 0;
1379         unsigned int idle_timeout = 0;
1380
1381         int err;
1382
1383         owner = dbus_message_get_sender(msg);
1384
1385         DBG("owner %s", owner);
1386
1387         if (ecall_session != NULL) {
1388                 /*
1389                  * If there is an emergency call already going on,
1390                  * ignore session creation attempt
1391                  */
1392                 err = -EBUSY;
1393                 goto err;
1394         }
1395
1396         dbus_message_iter_init(msg, &iter);
1397         dbus_message_iter_recurse(&iter, &array);
1398
1399         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1400                 DBusMessageIter entry, value;
1401                 const char *key, *val;
1402
1403                 dbus_message_iter_recurse(&array, &entry);
1404                 dbus_message_iter_get_basic(&entry, &key);
1405
1406                 dbus_message_iter_next(&entry);
1407                 dbus_message_iter_recurse(&entry, &value);
1408
1409                 switch (dbus_message_iter_get_arg_type(&value)) {
1410                 case DBUS_TYPE_ARRAY:
1411                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1412                                 allowed_bearers =
1413                                         session_parse_allowed_bearers(&value);
1414                         } else {
1415                                 return -EINVAL;
1416                         }
1417                         break;
1418                 case DBUS_TYPE_BOOLEAN:
1419                         if (g_str_equal(key, "Priority") == TRUE) {
1420                                 dbus_message_iter_get_basic(&value,
1421                                                         &priority);
1422                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1423                                 dbus_message_iter_get_basic(&value,
1424                                                         &avoid_handover);
1425                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1426                                 dbus_message_iter_get_basic(&value,
1427                                                         &stay_connected);
1428                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1429                                 dbus_message_iter_get_basic(&value,
1430                                                         &ecall);
1431                         } else {
1432                                 return -EINVAL;
1433                         }
1434                         break;
1435                 case DBUS_TYPE_UINT32:
1436                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1437                                 dbus_message_iter_get_basic(&value,
1438                                                         &periodic_connect);
1439                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1440                                 dbus_message_iter_get_basic(&value,
1441                                                         &idle_timeout);
1442                         } else {
1443                                 return -EINVAL;
1444                         }
1445                         break;
1446                 case DBUS_TYPE_STRING:
1447                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1448                                 dbus_message_iter_get_basic(&value, &val);
1449                                 roaming_policy = string2roamingpolicy(val);
1450                         } else {
1451                                 return -EINVAL;
1452                         }
1453                 }
1454                 dbus_message_iter_next(&array);
1455         }
1456
1457         dbus_message_iter_next(&iter);
1458         dbus_message_iter_get_basic(&iter, &notify_path);
1459
1460         if (notify_path == NULL) {
1461                 err = -EINVAL;
1462                 goto err;
1463         }
1464
1465         session_path = g_strdup_printf("/sessions%s", notify_path);
1466         if (session_path == NULL) {
1467                 err = -ENOMEM;
1468                 goto err;
1469         }
1470
1471         session = g_hash_table_lookup(session_hash, session_path);
1472         if (session != NULL) {
1473                 session = NULL;
1474                 err = -EEXIST;
1475                 goto err;
1476         }
1477
1478         session = g_try_new0(struct connman_session, 1);
1479         if (session == NULL) {
1480                 err = -ENOMEM;
1481                 goto err;
1482         }
1483
1484         session->info = g_try_new0(struct session_info, 1);
1485         if (session->info == NULL) {
1486                 err = -ENOMEM;
1487                 goto err;
1488         }
1489
1490         session->info_last = g_try_new0(struct session_info, 1);
1491         if (session->info_last == NULL) {
1492                 err = -ENOMEM;
1493                 goto err;
1494         }
1495
1496         info = session->info;
1497         info_last = session->info_last;
1498
1499         session->owner = g_strdup(owner);
1500         session->session_path = session_path;
1501         session->notify_path = g_strdup(notify_path);
1502         session->notify_watch =
1503                 g_dbus_add_disconnect_watch(connection, session->owner,
1504                                         owner_disconnect, session, NULL);
1505
1506         session->service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1507                                                 NULL, NULL);
1508
1509         info->online = FALSE;
1510         info->priority = priority;
1511         info->avoid_handover = avoid_handover;
1512         info->stay_connected = stay_connected;
1513         info->periodic_connect = periodic_connect;
1514         info->idle_timeout = idle_timeout;
1515         info->ecall = ecall;
1516         info->roaming_policy = roaming_policy;
1517         info->entry = NULL;
1518         info->marker = 0;
1519
1520         if (allowed_bearers == NULL) {
1521                 info->allowed_bearers =
1522                                 session_allowed_bearers_any();
1523
1524                 if (info->allowed_bearers == NULL) {
1525                         err = -ENOMEM;
1526                         goto err;
1527                 }
1528         } else {
1529                 info->allowed_bearers = allowed_bearers;
1530         }
1531
1532         g_hash_table_replace(session_hash, session->session_path, session);
1533
1534         DBG("add %s", session->session_path);
1535
1536         if (g_dbus_register_interface(connection, session->session_path,
1537                                         CONNMAN_SESSION_INTERFACE,
1538                                         session_methods, NULL,
1539                                         NULL, session, NULL) == FALSE) {
1540                 connman_error("Failed to register %s", session->session_path);
1541                 g_hash_table_remove(session_hash, session->session_path);
1542                 session = NULL;
1543
1544                 err = -EINVAL;
1545                 goto err;
1546         }
1547
1548         g_dbus_send_reply(connection, msg,
1549                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1550                                 DBUS_TYPE_INVALID);
1551
1552
1553         update_allowed_bearers(session);
1554         if (info->ecall == TRUE) {
1555                 ecall_session = session;
1556                 update_ecall_sessions(session);
1557         }
1558
1559         info_last->online = info->online;
1560         info_last->priority = info->priority;
1561         info_last->avoid_handover = info->avoid_handover;
1562         info_last->stay_connected = info->stay_connected;
1563         info_last->periodic_connect = info->periodic_connect;
1564         info_last->idle_timeout = info->idle_timeout;
1565         info_last->ecall = info->ecall;
1566         info_last->roaming_policy = info->roaming_policy;
1567         info_last->entry = info->entry;
1568         info_last->marker = info->marker;
1569         info_last->allowed_bearers = info->allowed_bearers;
1570
1571         session->info_dirty = TRUE;
1572         session->append_all = TRUE;
1573
1574         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1575
1576         return 0;
1577
1578 err:
1579         connman_error("Failed to create session");
1580
1581         if (session != NULL) {
1582                 if (session->info_last != NULL)
1583                         g_free(session->info_last);
1584                 if (session->info != NULL)
1585                         g_free(session->info);
1586                 g_free(session);
1587         }
1588
1589         g_free(session_path);
1590
1591         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1592         g_slist_free(allowed_bearers);
1593
1594         return err;
1595 }
1596
1597 int __connman_session_destroy(DBusMessage *msg)
1598 {
1599         const char *owner, *session_path;
1600         struct connman_session *session;
1601
1602         owner = dbus_message_get_sender(msg);
1603
1604         DBG("owner %s", owner);
1605
1606         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1607                                                         DBUS_TYPE_INVALID);
1608         if (session_path == NULL)
1609                 return -EINVAL;
1610
1611         session = g_hash_table_lookup(session_hash, session_path);
1612         if (session == NULL)
1613                 return -EINVAL;
1614
1615         if (g_strcmp0(owner, session->owner) != 0)
1616                 return -EACCES;
1617
1618         session_disconnect(session);
1619
1620         return 0;
1621 }
1622
1623 connman_bool_t __connman_session_mode()
1624 {
1625         return sessionmode;
1626 }
1627
1628 void __connman_session_set_mode(connman_bool_t enable)
1629 {
1630         DBG("enable %d", enable);
1631
1632         sessionmode = enable;
1633
1634         if (sessionmode == TRUE)
1635                 __connman_service_disconnect_all();
1636 }
1637
1638 static void service_add(struct connman_service *service,
1639                         const char *name)
1640 {
1641         GHashTableIter iter;
1642         GSequenceIter *iter_service_list;
1643         gpointer key, value;
1644         struct connman_session *session;
1645         struct service_entry *entry;
1646
1647         DBG("service %p", service);
1648
1649         g_hash_table_iter_init(&iter, session_hash);
1650
1651         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1652                 session = value;
1653
1654                 if (service_match(session, service) == FALSE)
1655                         continue;
1656
1657                 entry = create_service_entry(service, name,
1658                                                 CONNMAN_SERVICE_STATE_IDLE);
1659                 if (entry == NULL)
1660                         continue;
1661
1662                 iter_service_list =
1663                         g_sequence_insert_sorted(session->service_list,
1664                                                         entry, sort_services,
1665                                                         session);
1666
1667                 g_hash_table_replace(session->service_hash, service,
1668                                         iter_service_list);
1669
1670                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1671         }
1672 }
1673
1674 static void service_remove(struct connman_service *service)
1675 {
1676
1677         GHashTableIter iter;
1678         gpointer key, value;
1679         struct connman_session *session;
1680         struct session_info *info;
1681
1682         DBG("service %p", service);
1683
1684         g_hash_table_iter_init(&iter, session_hash);
1685
1686         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1687                 GSequenceIter *iter;
1688                 session = value;
1689                 info = session->info;
1690
1691                 iter = g_hash_table_lookup(session->service_hash, service);
1692                 if (iter == NULL)
1693                         continue;
1694
1695                 g_sequence_remove(iter);
1696
1697                 if (info->entry != NULL && info->entry->service == service)
1698                         info->entry = NULL;
1699                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1700         }
1701 }
1702
1703 static void service_state_changed(struct connman_service *service,
1704                                         enum connman_service_state state)
1705 {
1706         GHashTableIter iter;
1707         gpointer key, value;
1708         struct connman_session *session;
1709         struct session_info *info, *info_last;
1710
1711         DBG("service %p state %d", service, state);
1712
1713         g_hash_table_iter_init(&iter, session_hash);
1714
1715         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1716                 GSequenceIter *service_iter;
1717
1718                 session = value;
1719                 info = session->info;
1720                 info_last = session->info_last;
1721
1722                 service_iter = g_hash_table_lookup(session->service_hash, service);
1723                 if (service_iter != NULL) {
1724                         struct service_entry *entry;
1725
1726                         entry = g_sequence_get(service_iter);
1727                         entry->state = state;
1728
1729                         if (info->entry == entry) {
1730                                 info->online = is_online(entry->state);
1731                                 if (info_last->online != info->online)
1732                                         session->info_dirty = TRUE;
1733                         }
1734                 }
1735
1736                 session_changed(session,
1737                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1738         }
1739 }
1740
1741 static void ipconfig_changed(struct connman_service *service,
1742                                 struct connman_ipconfig *ipconfig)
1743 {
1744         GHashTableIter iter;
1745         gpointer key, value;
1746         struct connman_session *session;
1747         struct session_info *info;
1748         enum connman_ipconfig_type type;
1749
1750         DBG("service %p ipconfig %p", service, ipconfig);
1751
1752         type = __connman_ipconfig_get_config_type(ipconfig);
1753
1754         g_hash_table_iter_init(&iter, session_hash);
1755
1756         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1757                 session = value;
1758                 info = session->info;
1759
1760                 if (info->entry != NULL && info->entry->service == service) {
1761                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1762                                 ipconfig_ipv4_changed(session);
1763                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1764                                 ipconfig_ipv6_changed(session);
1765                 }
1766         }
1767 }
1768
1769 static struct connman_notifier session_notifier = {
1770         .name                   = "session",
1771         .service_add            = service_add,
1772         .service_remove         = service_remove,
1773         .service_state_changed  = service_state_changed,
1774         .ipconfig_changed       = ipconfig_changed,
1775 };
1776
1777 int __connman_session_init(void)
1778 {
1779         int err;
1780
1781         DBG("");
1782
1783         connection = connman_dbus_get_connection();
1784         if (connection == NULL)
1785                 return -1;
1786
1787         err = connman_notifier_register(&session_notifier);
1788         if (err < 0) {
1789                 dbus_connection_unref(connection);
1790                 return err;
1791         }
1792
1793         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1794                                                 NULL, cleanup_session);
1795
1796         sessionmode = FALSE;
1797         return 0;
1798 }
1799
1800 void __connman_session_cleanup(void)
1801 {
1802         DBG("");
1803
1804         if (connection == NULL)
1805                 return;
1806
1807         connman_notifier_unregister(&session_notifier);
1808
1809         g_hash_table_foreach(session_hash, release_session, NULL);
1810         g_hash_table_destroy(session_hash);
1811         session_hash = NULL;
1812
1813         dbus_connection_unref(connection);
1814 }