src/session.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  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/session.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection;
  36 static GHashTable *session_hash;
  37 static connman_bool_t sessionmode;
  38 static struct connman_session *ecall_session;
  39 static struct connman_session_config *session_config;
  40
  41 enum connman_session_trigger {
  42         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  43         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  44         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  45         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  46         CONNMAN_SESSION_TRIGGER_SERVICE         = 4,
  47         CONNMAN_SESSION_TRIGGER_ECALL           = 5,
  48 };
  49
  50 enum connman_session_reason {
  51         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  52         CONNMAN_SESSION_REASON_CONNECT          = 1,
  53         CONNMAN_SESSION_REASON_FREE_RIDE        = 2,
  54 };
  55
  56 enum connman_session_state {
  57         CONNMAN_SESSION_STATE_DISCONNECTED   = 0,
  58         CONNMAN_SESSION_STATE_CONNECTED      = 1,
  59         CONNMAN_SESSION_STATE_ONLINE         = 2,
  60 };
  61
  62 enum connman_session_type {
  63         CONNMAN_SESSION_TYPE_ANY      = 0,
  64         CONNMAN_SESSION_TYPE_LOCAL    = 1,
  65         CONNMAN_SESSION_TYPE_INTERNET = 2,
  66 };
  67
  68 enum connman_session_roaming_policy {
  69         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  70         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  71         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  72         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  73         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  74         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  75 };
  76
  77 struct service_entry {
  78         /* track why this service was selected */
  79         enum connman_session_reason reason;
  80         enum connman_service_state state;
  81         const char *name;
  82         struct connman_service *service;
  83         char *ifname;
  84         const char *bearer;
  85         GSList *pending_timeouts;
  86 };
  87
  88 struct session_info {
  89         enum connman_session_state state;
  90         enum connman_session_type type;
  91         connman_bool_t priority;
  92         GSList *allowed_bearers;
  93         enum connman_session_roaming_policy roaming_policy;
  94
  95         struct service_entry *entry;
  96         enum connman_session_reason reason;
  97 };
  98
  99 struct connman_session {
 100         char *owner;
 101         char *session_path;
 102         char *notify_path;
 103         guint notify_watch;
 104
 105         connman_bool_t append_all;
 106         struct session_info *info;
 107         struct session_info *info_last;
 108
 109         connman_bool_t ecall;
 110
 111         GSequence *service_list;
 112         GHashTable *service_hash;
 113 };
 114
 115 struct bearer_info {
 116         char *name;
 117         connman_bool_t match_all;
 118         enum connman_service_type service_type;
 119 };
 120
 121 static const char *trigger2string(enum connman_session_trigger trigger)
 122 {
 123         switch (trigger) {
 124         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 125                 break;
 126         case CONNMAN_SESSION_TRIGGER_SETTING:
 127                 return "setting";
 128         case CONNMAN_SESSION_TRIGGER_CONNECT:
 129                 return "connect";
 130         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 131                 return "disconnect";
 132         case CONNMAN_SESSION_TRIGGER_SERVICE:
 133                 return "service";
 134         case CONNMAN_SESSION_TRIGGER_ECALL:
 135                 return "ecall";
 136         }
 137
 138         return NULL;
 139 }
 140
 141 static const char *reason2string(enum connman_session_reason reason)
 142 {
 143         switch (reason) {
 144         case CONNMAN_SESSION_REASON_UNKNOWN:
 145                 return "unknown";
 146         case CONNMAN_SESSION_REASON_CONNECT:
 147                 return "connect";
 148         case CONNMAN_SESSION_REASON_FREE_RIDE:
 149                 return "free-ride";
 150         }
 151
 152         return NULL;
 153 }
 154
 155 static const char *state2string(enum connman_session_state state)
 156 {
 157         switch (state) {
 158         case CONNMAN_SESSION_STATE_DISCONNECTED:
 159                 return "disconnected";
 160         case CONNMAN_SESSION_STATE_CONNECTED:
 161                 return "connected";
 162         case CONNMAN_SESSION_STATE_ONLINE:
 163                 return "online";
 164         }
 165
 166         return NULL;
 167 }
 168
 169 static const char *type2string(enum connman_session_type type)
 170 {
 171         switch (type) {
 172         case CONNMAN_SESSION_TYPE_ANY:
 173                 return "";
 174         case CONNMAN_SESSION_TYPE_LOCAL:
 175                 return "local";
 176         case CONNMAN_SESSION_TYPE_INTERNET:
 177                 return "internet";
 178         }
 179
 180         return NULL;
 181 }
 182
 183 static enum connman_session_type string2type(const char *type)
 184 {
 185         if (g_strcmp0(type, "local") == 0)
 186                 return CONNMAN_SESSION_TYPE_LOCAL;
 187         else if (g_strcmp0(type, "internet") == 0)
 188                 return CONNMAN_SESSION_TYPE_INTERNET;
 189
 190         return CONNMAN_SESSION_TYPE_ANY;
 191 }
 192
 193 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 194 {
 195         if (g_strcmp0(policy, "default") == 0)
 196                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 197         else if (g_strcmp0(policy, "always") == 0)
 198                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 199         else if (g_strcmp0(policy, "forbidden") == 0)
 200                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 201         else if (g_strcmp0(policy, "national") == 0)
 202                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 203         else if (g_strcmp0(policy, "international") == 0)
 204                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 205         else
 206                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 207 }
 208
 209 static enum connman_service_type bearer2service(const char *bearer)
 210 {
 211         if (bearer == NULL)
 212                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 213
 214         if (g_strcmp0(bearer, "ethernet") == 0)
 215                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 216         else if (g_strcmp0(bearer, "wifi") == 0)
 217                 return CONNMAN_SERVICE_TYPE_WIFI;
 218         else if (g_strcmp0(bearer, "wimax") == 0)
 219                 return CONNMAN_SERVICE_TYPE_WIMAX;
 220         else if (g_strcmp0(bearer, "bluetooth") == 0)
 221                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 222         else if (g_strcmp0(bearer, "cellular") == 0)
 223                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 224         else if (g_strcmp0(bearer, "vpn") == 0)
 225                 return CONNMAN_SERVICE_TYPE_VPN;
 226         else
 227                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 228 }
 229
 230 static char *service2bearer(enum connman_service_type type)
 231 {
 232         switch (type) {
 233         case CONNMAN_SERVICE_TYPE_ETHERNET:
 234                 return "ethernet";
 235         case CONNMAN_SERVICE_TYPE_WIFI:
 236                 return "wifi";
 237         case CONNMAN_SERVICE_TYPE_WIMAX:
 238                 return "wimax";
 239         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 240                 return "bluetooth";
 241         case CONNMAN_SERVICE_TYPE_CELLULAR:
 242                 return "cellular";
 243         case CONNMAN_SERVICE_TYPE_VPN:
 244                 return "vpn";
 245         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 246         case CONNMAN_SERVICE_TYPE_SYSTEM:
 247         case CONNMAN_SERVICE_TYPE_GPS:
 248         case CONNMAN_SERVICE_TYPE_GADGET:
 249                 return "";
 250         }
 251
 252         return "";
 253 }
 254
 255 static int config_get_bool(const char *id, const char *key, connman_bool_t *val)
 256 {
 257         if (session_config == NULL) {
 258                 *val = FALSE;
 259                 return -EINVAL;
 260         }
 261
 262         return (*session_config->get_bool)(id, key, val);
 263 }
 264
 265 static int config_get_string(const char *id, const char *key, char **val)
 266 {
 267         if (session_config == NULL) {
 268                 *val = NULL;
 269                 return -EINVAL;
 270         }
 271
 272         return (*session_config->get_string)(id, key, val);
 273 }
 274
 275 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 276 {
 277         struct bearer_info *info = data;
 278
 279         g_free(info->name);
 280         g_free(info);
 281 }
 282
 283 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 284 {
 285         struct bearer_info *info;
 286         DBusMessageIter array;
 287         GSList *list = NULL;
 288
 289         dbus_message_iter_recurse(iter, &array);
 290
 291         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 292                 char *bearer = NULL;
 293
 294                 dbus_message_iter_get_basic(&array, &bearer);
 295
 296                 info = g_try_new0(struct bearer_info, 1);
 297                 if (info == NULL) {
 298                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 299                         g_slist_free(list);
 300
 301                         return NULL;
 302                 }
 303
 304                 info->name = g_strdup(bearer);
 305                 info->service_type = bearer2service(info->name);
 306
 307                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 308                                 g_strcmp0(info->name, "*") == 0) {
 309                         info->match_all = TRUE;
 310                 } else {
 311                         info->match_all = FALSE;
 312                 }
 313
 314                 list = g_slist_append(list, info);
 315
 316                 dbus_message_iter_next(&array);
 317         }
 318
 319         return list;
 320 }
 321
 322 static GSList *session_allowed_bearers_any(void)
 323 {
 324         struct bearer_info *info;
 325         GSList *list = NULL;
 326
 327         info = g_try_new0(struct bearer_info, 1);
 328         if (info == NULL) {
 329                 g_slist_free(list);
 330
 331                 return NULL;
 332         }
 333
 334         info->name = g_strdup("");
 335         info->match_all = TRUE;
 336         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 337
 338         list = g_slist_append(list, info);
 339
 340         return list;
 341 }
 342
 343 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 344 {
 345         struct session_info *info = user_data;
 346         GSList *list;
 347
 348         for (list = info->allowed_bearers;
 349                         list != NULL; list = list->next) {
 350                 struct bearer_info *bearer_info = list->data;
 351
 352                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 353                                                 &bearer_info->name);
 354         }
 355 }
 356
 357 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 358 {
 359         struct connman_service *service = user_data;
 360         struct connman_ipconfig *ipconfig_ipv4;
 361
 362         if (service == NULL)
 363                 return;
 364
 365         if (__connman_service_is_connected_state(service,
 366                                 CONNMAN_IPCONFIG_TYPE_IPV4) == FALSE) {
 367                 return;
 368         }
 369
 370         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 371         if (ipconfig_ipv4 == NULL)
 372                 return;
 373
 374         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 375 }
 376
 377 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 378 {
 379         struct connman_service *service = user_data;
 380         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 381
 382         if (service == NULL)
 383                 return;
 384
 385         if (__connman_service_is_connected_state(service,
 386                                 CONNMAN_IPCONFIG_TYPE_IPV6) == FALSE) {
 387                 return;
 388         }
 389
 390         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 391         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 392         if (ipconfig_ipv6 == NULL)
 393                 return;
 394
 395         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 396 }
 397
 398 static void append_notify(DBusMessageIter *dict,
 399                                         struct connman_session *session)
 400 {
 401         struct session_info *info = session->info;
 402         struct session_info *info_last = session->info_last;
 403         struct connman_service *service;
 404         const char *name, *ifname, *bearer;
 405
 406         if (session->append_all == TRUE ||
 407                         info->state != info_last->state) {
 408                 const char *state = state2string(info->state);
 409
 410                 connman_dbus_dict_append_basic(dict, "State",
 411                                                 DBUS_TYPE_STRING,
 412                                                 &state);
 413                 info_last->state = info->state;
 414         }
 415
 416         if (session->append_all == TRUE ||
 417                         info->entry != info_last->entry) {
 418                 if (info->entry == NULL) {
 419                         name = "";
 420                         ifname = "";
 421                         service = NULL;
 422                         bearer = "";
 423                 } else {
 424                         name = info->entry->name;
 425                         ifname = info->entry->ifname;
 426                         service = info->entry->service;
 427                         bearer = info->entry->bearer;
 428                 }
 429
 430                 connman_dbus_dict_append_basic(dict, "Name",
 431                                                 DBUS_TYPE_STRING,
 432                                                 &name);
 433
 434                 connman_dbus_dict_append_dict(dict, "IPv4",
 435                                                 append_ipconfig_ipv4,
 436                                                 service);
 437
 438                 connman_dbus_dict_append_dict(dict, "IPv6",
 439                                                 append_ipconfig_ipv6,
 440                                                 service);
 441
 442                 connman_dbus_dict_append_basic(dict, "Interface",
 443                                                 DBUS_TYPE_STRING,
 444                                                 &ifname);
 445
 446                 connman_dbus_dict_append_basic(dict, "Bearer",
 447                                                 DBUS_TYPE_STRING,
 448                                                 &bearer);
 449
 450                 info_last->entry = info->entry;
 451         }
 452
 453         if (session->append_all == TRUE || info->type != info_last->type) {
 454                 const char *type = type2string(info->type);
 455
 456                 connman_dbus_dict_append_basic(dict, "ConnectionType",
 457                                                 DBUS_TYPE_STRING,
 458                                                 &type);
 459                 info_last->type = info->type;
 460         }
 461
 462         if (session->append_all == TRUE ||
 463                         info->allowed_bearers != info_last->allowed_bearers) {
 464                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 465                                                 DBUS_TYPE_STRING,
 466                                                 append_allowed_bearers,
 467                                                 info);
 468                 info_last->allowed_bearers = info->allowed_bearers;
 469         }
 470
 471         session->append_all = FALSE;
 472 }
 473
 474 static connman_bool_t is_type_matching_state(enum connman_session_state *state,
 475                                                 enum connman_session_type type)
 476 {
 477         switch (type) {
 478         case CONNMAN_SESSION_TYPE_ANY:
 479                 return TRUE;
 480         case CONNMAN_SESSION_TYPE_LOCAL:
 481                 if (*state >= CONNMAN_SESSION_STATE_CONNECTED) {
 482                         *state = CONNMAN_SESSION_STATE_CONNECTED;
 483                         return TRUE;
 484                 }
 485
 486                 break;
 487         case CONNMAN_SESSION_TYPE_INTERNET:
 488                 if (*state == CONNMAN_SESSION_STATE_ONLINE)
 489                         return TRUE;
 490                 break;
 491         }
 492
 493         return FALSE;
 494 }
 495
 496 static connman_bool_t compute_notifiable_changes(struct connman_session *session)
 497 {
 498         struct session_info *info_last = session->info_last;
 499         struct session_info *info = session->info;
 500
 501         if (session->append_all == TRUE)
 502                 return TRUE;
 503
 504         if (info->state != info_last->state)
 505                 return TRUE;
 506
 507         if (info->entry != info_last->entry &&
 508                         info->state >= CONNMAN_SESSION_STATE_CONNECTED)
 509                 return TRUE;
 510
 511         if (info->allowed_bearers != info_last->allowed_bearers ||
 512                         info->type != info_last->type)
 513                 return TRUE;
 514
 515         return FALSE;
 516 }
 517
 518 static gboolean session_notify(gpointer user_data)
 519 {
 520         struct connman_session *session = user_data;
 521         DBusMessage *msg;
 522         DBusMessageIter array, dict;
 523
 524         if (compute_notifiable_changes(session) == FALSE)
 525                 return FALSE;
 526
 527         DBG("session %p owner %s notify_path %s", session,
 528                 session->owner, session->notify_path);
 529
 530         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 531                                                 CONNMAN_NOTIFICATION_INTERFACE,
 532                                                 "Update");
 533         if (msg == NULL)
 534                 return FALSE;
 535
 536         dbus_message_iter_init_append(msg, &array);
 537         connman_dbus_dict_open(&array, &dict);
 538
 539         append_notify(&dict, session);
 540
 541         connman_dbus_dict_close(&array, &dict);
 542
 543         g_dbus_send_message(connection, msg);
 544
 545         return FALSE;
 546 }
 547
 548 static void ipconfig_ipv4_changed(struct connman_session *session)
 549 {
 550         struct session_info *info = session->info;
 551
 552         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 553                                                 "IPv4", append_ipconfig_ipv4,
 554                                                 info->entry->service);
 555 }
 556
 557 static void ipconfig_ipv6_changed(struct connman_session *session)
 558 {
 559         struct session_info *info = session->info;
 560
 561         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 562                                                 "IPv6", append_ipconfig_ipv6,
 563                                                 info->entry->service);
 564 }
 565
 566 static connman_bool_t service_type_match(struct connman_session *session,
 567                                         struct connman_service *service)
 568 {
 569         struct session_info *info = session->info;
 570         GSList *list;
 571
 572         for (list = info->allowed_bearers;
 573                         list != NULL; list = list->next) {
 574                 struct bearer_info *bearer_info = list->data;
 575                 enum connman_service_type service_type;
 576
 577                 if (bearer_info->match_all == TRUE)
 578                         return TRUE;
 579
 580                 service_type = connman_service_get_type(service);
 581                 if (bearer_info->service_type == service_type)
 582                         return TRUE;
 583         }
 584
 585         return FALSE;
 586 }
 587
 588 static connman_bool_t service_match(struct connman_session *session,
 589                                         struct connman_service *service)
 590 {
 591         if (service_type_match(session, service) == FALSE)
 592                 return FALSE;
 593
 594         return TRUE;
 595 }
 596
 597 static int service_type_weight(enum connman_service_type type)
 598 {
 599         /*
 600          * The session doesn't care which service
 601          * to use. Nevertheless we have to sort them
 602          * according their type. The ordering is
 603          *
 604          * 1. Ethernet
 605          * 2. Bluetooth
 606          * 3. WiFi/WiMAX
 607          * 4. Cellular
 608          */
 609
 610         switch (type) {
 611         case CONNMAN_SERVICE_TYPE_ETHERNET:
 612                 return 4;
 613         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 614                 return 3;
 615         case CONNMAN_SERVICE_TYPE_WIFI:
 616         case CONNMAN_SERVICE_TYPE_WIMAX:
 617                 return 2;
 618         case CONNMAN_SERVICE_TYPE_CELLULAR:
 619                 return 1;
 620         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 621         case CONNMAN_SERVICE_TYPE_SYSTEM:
 622         case CONNMAN_SERVICE_TYPE_GPS:
 623         case CONNMAN_SERVICE_TYPE_VPN:
 624         case CONNMAN_SERVICE_TYPE_GADGET:
 625                 break;
 626         }
 627
 628         return 0;
 629 }
 630
 631 static gint sort_allowed_bearers(struct connman_service *service_a,
 632                                         struct connman_service *service_b,
 633                                         struct connman_session *session)
 634 {
 635         struct session_info *info = session->info;
 636         GSList *list;
 637         enum connman_service_type type_a, type_b;
 638         int weight_a, weight_b;
 639
 640         type_a = connman_service_get_type(service_a);
 641         type_b = connman_service_get_type(service_b);
 642
 643         for (list = info->allowed_bearers;
 644                         list != NULL; list = list->next) {
 645                 struct bearer_info *bearer_info = list->data;
 646
 647                 if (bearer_info->match_all == TRUE) {
 648                         if (type_a != type_b) {
 649                                 weight_a = service_type_weight(type_a);
 650                                 weight_b = service_type_weight(type_b);
 651
 652                                 if (weight_a > weight_b)
 653                                         return -1;
 654
 655                                 if (weight_a < weight_b)
 656                                         return 1;
 657
 658                                 return 0;
 659                         }
 660                 }
 661
 662                 if (type_a == bearer_info->service_type &&
 663                                 type_b == bearer_info->service_type) {
 664                         return 0;
 665                 }
 666
 667                 if (type_a == bearer_info->service_type &&
 668                                 type_b != bearer_info->service_type) {
 669                         return -1;
 670                 }
 671
 672                 if (type_a != bearer_info->service_type &&
 673                                 type_b == bearer_info->service_type) {
 674                         return 1;
 675                 }
 676         }
 677
 678         return 0;
 679 }
 680
 681 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 682 {
 683         struct service_entry *entry_a = (void *)a;
 684         struct service_entry *entry_b = (void *)b;
 685         struct connman_session *session = user_data;
 686
 687         return sort_allowed_bearers(entry_a->service, entry_b->service,
 688                                 session);
 689 }
 690
 691 static void cleanup_session(gpointer user_data)
 692 {
 693         struct connman_session *session = user_data;
 694         struct session_info *info = session->info;
 695
 696         DBG("remove %s", session->session_path);
 697
 698         g_hash_table_destroy(session->service_hash);
 699         g_sequence_free(session->service_list);
 700
 701         if (info->entry != NULL &&
 702                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 703                 __connman_service_disconnect(info->entry->service);
 704         }
 705
 706         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 707         g_slist_free(info->allowed_bearers);
 708
 709         g_free(session->owner);
 710         g_free(session->session_path);
 711         g_free(session->notify_path);
 712         g_free(session->info);
 713         g_free(session->info_last);
 714
 715         g_free(session);
 716 }
 717
 718 static enum connman_session_state service_to_session_state(enum connman_service_state state)
 719 {
 720         switch (state) {
 721         case CONNMAN_SERVICE_STATE_UNKNOWN:
 722         case CONNMAN_SERVICE_STATE_IDLE:
 723         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 724         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 725         case CONNMAN_SERVICE_STATE_DISCONNECT:
 726         case CONNMAN_SERVICE_STATE_FAILURE:
 727                 break;
 728         case CONNMAN_SERVICE_STATE_READY:
 729                 return CONNMAN_SESSION_STATE_CONNECTED;
 730         case CONNMAN_SERVICE_STATE_ONLINE:
 731                 return CONNMAN_SESSION_STATE_ONLINE;
 732         }
 733
 734         return CONNMAN_SESSION_STATE_DISCONNECTED;
 735 }
 736
 737 static connman_bool_t is_connected(enum connman_service_state state)
 738 {
 739         switch (state) {
 740         case CONNMAN_SERVICE_STATE_UNKNOWN:
 741         case CONNMAN_SERVICE_STATE_IDLE:
 742         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 743         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 744         case CONNMAN_SERVICE_STATE_DISCONNECT:
 745         case CONNMAN_SERVICE_STATE_FAILURE:
 746                 break;
 747         case CONNMAN_SERVICE_STATE_READY:
 748         case CONNMAN_SERVICE_STATE_ONLINE:
 749                 return TRUE;
 750         }
 751
 752         return FALSE;
 753 }
 754
 755 static connman_bool_t is_connecting(enum connman_service_state state)
 756 {
 757         switch (state) {
 758         case CONNMAN_SERVICE_STATE_UNKNOWN:
 759         case CONNMAN_SERVICE_STATE_IDLE:
 760                 break;
 761         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 762         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 763                 return TRUE;
 764         case CONNMAN_SERVICE_STATE_DISCONNECT:
 765         case CONNMAN_SERVICE_STATE_FAILURE:
 766         case CONNMAN_SERVICE_STATE_READY:
 767         case CONNMAN_SERVICE_STATE_ONLINE:
 768                 break;
 769         }
 770
 771         return FALSE;
 772 }
 773
 774 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 775 {
 776         switch (reason) {
 777         case CONNMAN_SESSION_REASON_UNKNOWN:
 778         case CONNMAN_SESSION_REASON_FREE_RIDE:
 779                 break;
 780         case CONNMAN_SESSION_REASON_CONNECT:
 781                 return TRUE;
 782         }
 783
 784         return FALSE;
 785 }
 786
 787 static connman_bool_t explicit_disconnect(struct session_info *info)
 788 {
 789         if (info->entry == NULL)
 790                 return FALSE;
 791
 792         DBG("reason %s service %p state %d",
 793                 reason2string(info->entry->reason),
 794                 info->entry->service, info->entry->state);
 795
 796         if (info->entry->reason == CONNMAN_SESSION_REASON_UNKNOWN)
 797                 return FALSE;
 798
 799         if (explicit_connect(info->entry->reason) == FALSE)
 800                 return FALSE;
 801
 802         if (__connman_service_session_dec(info->entry->service) == FALSE)
 803                 return FALSE;
 804
 805         return TRUE;
 806 }
 807
 808 struct pending_data {
 809         unsigned int timeout;
 810         struct service_entry *entry;
 811         gboolean (*cb)(gpointer);
 812 };
 813
 814 static void pending_timeout_free(gpointer data, gpointer user_data)
 815 {
 816         struct pending_data *pending = data;
 817
 818         DBG("pending %p timeout %d", pending, pending->timeout);
 819         g_source_remove(pending->timeout);
 820         g_free(pending);
 821 }
 822
 823 static void pending_timeout_remove_all(struct service_entry *entry)
 824 {
 825         DBG("");
 826
 827         g_slist_foreach(entry->pending_timeouts, pending_timeout_free, NULL);
 828         g_slist_free(entry->pending_timeouts);
 829         entry->pending_timeouts = NULL;
 830 }
 831
 832 static gboolean pending_timeout_cb(gpointer data)
 833 {
 834         struct pending_data *pending = data;
 835         struct service_entry *entry = pending->entry;
 836         gboolean ret;
 837
 838         DBG("pending %p timeout %d", pending, pending->timeout);
 839
 840         ret = pending->cb(pending->entry);
 841         if (ret == FALSE) {
 842                 entry->pending_timeouts =
 843                         g_slist_remove(entry->pending_timeouts,
 844                                         pending);
 845                 g_free(pending);
 846         }
 847         return ret;
 848 }
 849
 850 static connman_bool_t pending_timeout_add(unsigned int seconds,
 851                                         gboolean (*cb)(gpointer),
 852                                         struct service_entry *entry)
 853 {
 854         struct pending_data *pending = g_try_new0(struct pending_data, 1);
 855
 856         if (pending == NULL || cb == NULL || entry == NULL) {
 857                 g_free(pending);
 858                 return FALSE;
 859         }
 860
 861         pending->cb = cb;
 862         pending->entry = entry;
 863         pending->timeout = g_timeout_add_seconds(seconds, pending_timeout_cb,
 864                                                 pending);
 865         entry->pending_timeouts = g_slist_prepend(entry->pending_timeouts,
 866                                                 pending);
 867
 868         DBG("pending %p entry %p timeout id %d", pending, entry,
 869                 pending->timeout);
 870
 871         return TRUE;
 872 }
 873
 874 static gboolean call_disconnect(gpointer user_data)
 875 {
 876         struct service_entry *entry = user_data;
 877         struct connman_service *service = entry->service;
 878
 879         /*
 880          * TODO: We should mark this entry as pending work. In case
 881          * disconnect fails we just unassign this session from the
 882          * service and can't do anything later on it
 883          */
 884         DBG("disconnect service %p", service);
 885         __connman_service_disconnect(service);
 886
 887         return FALSE;
 888 }
 889
 890 static gboolean call_connect(gpointer user_data)
 891 {
 892         struct service_entry *entry = user_data;
 893         struct connman_service *service = entry->service;
 894
 895         DBG("connect service %p", service);
 896         __connman_service_connect(service);
 897
 898         return FALSE;
 899 }
 900
 901 static void deselect_service(struct session_info *info)
 902 {
 903         struct service_entry *entry;
 904         connman_bool_t disconnect, connected;
 905
 906         DBG("");
 907
 908         if (info->entry == NULL)
 909                 return;
 910
 911         disconnect = explicit_disconnect(info);
 912
 913         connected = is_connecting(info->entry->state) == TRUE ||
 914                         is_connected(info->entry->state) == TRUE;
 915
 916         info->state = CONNMAN_SESSION_STATE_DISCONNECTED;
 917         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 918
 919         entry = info->entry;
 920         info->entry = NULL;
 921
 922         DBG("disconnect %d connected %d", disconnect, connected);
 923
 924         if (disconnect == TRUE && connected == TRUE)
 925                 pending_timeout_add(0, call_disconnect, entry);
 926 }
 927
 928 static void deselect_and_disconnect(struct connman_session *session)
 929 {
 930         struct session_info *info = session->info;
 931
 932         deselect_service(info);
 933
 934         info->reason = CONNMAN_SESSION_REASON_FREE_RIDE;
 935 }
 936
 937 static void select_connected_service(struct session_info *info,
 938                                         struct service_entry *entry)
 939 {
 940         enum connman_session_state state;
 941
 942         state = service_to_session_state(entry->state);
 943         if (is_type_matching_state(&state, info->type) == FALSE)
 944                 return;
 945
 946         info->state = state;
 947
 948         info->entry = entry;
 949         info->entry->reason = info->reason;
 950
 951         if (explicit_connect(info->reason) == FALSE)
 952                 return;
 953
 954         __connman_service_session_inc(info->entry->service);
 955 }
 956
 957 static void select_offline_service(struct session_info *info,
 958                                         struct service_entry *entry)
 959 {
 960         if (explicit_connect(info->reason) == FALSE)
 961                 return;
 962
 963         info->state = service_to_session_state(entry->state);
 964
 965         info->entry = entry;
 966         info->entry->reason = info->reason;
 967
 968         __connman_service_session_inc(info->entry->service);
 969         pending_timeout_add(0, call_connect, entry);
 970 }
 971
 972 static void select_service(struct session_info *info,
 973                                 struct service_entry *entry)
 974 {
 975         DBG("service %p", entry->service);
 976
 977         if (is_connected(entry->state) == TRUE)
 978                 select_connected_service(info, entry);
 979         else
 980                 select_offline_service(info, entry);
 981 }
 982
 983 static void select_and_connect(struct connman_session *session,
 984                                 enum connman_session_reason reason)
 985 {
 986         struct session_info *info = session->info;
 987         struct service_entry *entry = NULL;
 988         GSequenceIter *iter;
 989
 990         DBG("session %p reason %s", session, reason2string(reason));
 991
 992         info->reason = reason;
 993
 994         iter = g_sequence_get_begin_iter(session->service_list);
 995
 996         while (g_sequence_iter_is_end(iter) == FALSE) {
 997                 entry = g_sequence_get(iter);
 998
 999                 switch (entry->state) {
1000                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
1001                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
1002                 case CONNMAN_SERVICE_STATE_READY:
1003                 case CONNMAN_SERVICE_STATE_ONLINE:
1004                 case CONNMAN_SERVICE_STATE_IDLE:
1005                 case CONNMAN_SERVICE_STATE_DISCONNECT:
1006                         select_service(info, entry);
1007                         return;
1008                 case CONNMAN_SERVICE_STATE_UNKNOWN:
1009                 case CONNMAN_SERVICE_STATE_FAILURE:
1010                         break;
1011                 }
1012
1013                 iter = g_sequence_iter_next(iter);
1014         }
1015 }
1016
1017 static struct service_entry *create_service_entry(struct connman_service *service,
1018                                         const char *name,
1019                                         enum connman_service_state state)
1020 {
1021         struct service_entry *entry;
1022         enum connman_service_type type;
1023         int idx;
1024
1025         entry = g_try_new0(struct service_entry, 1);
1026         if (entry == NULL)
1027                 return entry;
1028
1029         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
1030         entry->state = state;
1031         if (name != NULL)
1032                 entry->name = name;
1033         else
1034                 entry->name = "";
1035         entry->service = service;
1036
1037         idx = __connman_service_get_index(entry->service);
1038         entry->ifname = connman_inet_ifname(idx);
1039         if (entry->ifname == NULL)
1040                 entry->ifname = g_strdup("");
1041
1042         type = connman_service_get_type(entry->service);
1043         entry->bearer = service2bearer(type);
1044
1045         return entry;
1046 }
1047
1048 static void destroy_service_entry(gpointer data)
1049 {
1050         struct service_entry *entry = data;
1051
1052         pending_timeout_remove_all(entry);
1053         g_free(entry->ifname);
1054
1055         g_free(entry);
1056 }
1057
1058 static void populate_service_list(struct connman_session *session)
1059 {
1060         struct service_entry *entry;
1061         GSequenceIter *iter;
1062
1063         session->service_hash =
1064                 g_hash_table_new_full(g_direct_hash, g_direct_equal,
1065                                         NULL, NULL);
1066         session->service_list = __connman_service_get_list(session,
1067                                                         service_match,
1068                                                         create_service_entry,
1069                                                         destroy_service_entry);
1070
1071         g_sequence_sort(session->service_list, sort_services, session);
1072
1073         iter = g_sequence_get_begin_iter(session->service_list);
1074
1075         while (g_sequence_iter_is_end(iter) == FALSE) {
1076                 entry = g_sequence_get(iter);
1077
1078                 DBG("service %p type %s name %s", entry->service,
1079                         service2bearer(connman_service_get_type(entry->service)),
1080                         entry->name);
1081
1082                 g_hash_table_replace(session->service_hash,
1083                                         entry->service, iter);
1084
1085                 iter = g_sequence_iter_next(iter);
1086         }
1087 }
1088
1089 static void session_changed(struct connman_session *session,
1090                                 enum connman_session_trigger trigger)
1091 {
1092         struct session_info *info = session->info;
1093         struct session_info *info_last = session->info_last;
1094         GSequenceIter *service_iter = NULL, *service_iter_last = NULL;
1095         GSequence *service_list_last;
1096         GHashTable *service_hash_last;
1097
1098         /*
1099          * TODO: This only a placeholder for the 'real' algorithm to
1100          * play a bit around. So we are going to improve it step by step.
1101          */
1102
1103         DBG("session %p trigger %s reason %s", session, trigger2string(trigger),
1104                                                 reason2string(info->reason));
1105
1106         if (info->entry != NULL) {
1107                 enum connman_session_state state;
1108
1109                 state = service_to_session_state(info->entry->state);
1110
1111                 if (is_type_matching_state(&state, info->type) == TRUE)
1112                         info->state = state;
1113         }
1114
1115         switch (trigger) {
1116         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
1117                 DBG("ignore session changed event");
1118                 return;
1119         case CONNMAN_SESSION_TRIGGER_SETTING:
1120                 if (info->allowed_bearers != info_last->allowed_bearers) {
1121
1122                         service_hash_last = session->service_hash;
1123                         service_list_last = session->service_list;
1124
1125                         populate_service_list(session);
1126
1127                         if (info->entry != NULL) {
1128                                 service_iter_last = g_hash_table_lookup(
1129                                                         service_hash_last,
1130                                                         info->entry->service);
1131                                 service_iter = g_hash_table_lookup(
1132                                                         session->service_hash,
1133                                                         info->entry->service);
1134                         }
1135
1136                         if (service_iter == NULL && service_iter_last != NULL) {
1137                                 /*
1138                                  * The currently selected service is
1139                                  * not part of this session anymore.
1140                                  */
1141                                 deselect_and_disconnect(session);
1142                         }
1143
1144                         g_hash_table_remove_all(service_hash_last);
1145                         g_sequence_free(service_list_last);
1146                 }
1147
1148                 if (info->type != info_last->type) {
1149                         if (info->state >= CONNMAN_SESSION_STATE_CONNECTED &&
1150                                         is_type_matching_state(&info->state,
1151                                                         info->type) == FALSE)
1152                                 deselect_and_disconnect(session);
1153                 }
1154
1155                 if (info->state == CONNMAN_SESSION_STATE_DISCONNECTED) {
1156                         select_and_connect(session,
1157                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1158                 }
1159
1160                 break;
1161         case CONNMAN_SESSION_TRIGGER_ECALL:
1162                 /*
1163                  * For the time beeing we fallback to normal connect
1164                  * strategy.
1165                  */
1166         case CONNMAN_SESSION_TRIGGER_CONNECT:
1167                 if (info->state >= CONNMAN_SESSION_STATE_CONNECTED) {
1168                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
1169                                 break;
1170                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
1171                         __connman_service_session_inc(info->entry->service);
1172                         break;
1173                 }
1174
1175                 if (info->entry != NULL &&
1176                                 is_connecting(info->entry->state) == TRUE) {
1177                         break;
1178                 }
1179
1180                 select_and_connect(session,
1181                                 CONNMAN_SESSION_REASON_CONNECT);
1182
1183                 break;
1184         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
1185                 deselect_and_disconnect(session);
1186
1187                 break;
1188         case CONNMAN_SESSION_TRIGGER_SERVICE:
1189                 if (info->entry != NULL &&
1190                         (is_connecting(info->entry->state) == TRUE ||
1191                                 is_connected(info->entry->state) == TRUE)) {
1192                         break;
1193                 }
1194
1195                 deselect_and_disconnect(session);
1196
1197                 if (info->reason == CONNMAN_SESSION_REASON_FREE_RIDE) {
1198                         select_and_connect(session, info->reason);
1199                 }
1200
1201                 break;
1202         }
1203
1204         session_notify(session);
1205 }
1206
1207 static DBusMessage *connect_session(DBusConnection *conn,
1208                                         DBusMessage *msg, void *user_data)
1209 {
1210         struct connman_session *session = user_data;
1211
1212         DBG("session %p", session);
1213
1214         if (ecall_session != NULL) {
1215                 if (ecall_session->ecall == TRUE && ecall_session != session)
1216                         return __connman_error_failed(msg, EBUSY);
1217
1218                 session->ecall = TRUE;
1219                 session_changed(session, CONNMAN_SESSION_TRIGGER_ECALL);
1220         } else
1221                 session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1222
1223         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1224 }
1225
1226 static DBusMessage *disconnect_session(DBusConnection *conn,
1227                                         DBusMessage *msg, void *user_data)
1228 {
1229         struct connman_session *session = user_data;
1230
1231         DBG("session %p", session);
1232
1233         if (ecall_session != NULL) {
1234                 if (ecall_session->ecall == TRUE && ecall_session != session)
1235                         return __connman_error_failed(msg, EBUSY);
1236
1237                 session->ecall = FALSE;
1238         }
1239
1240         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1241
1242         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1243 }
1244
1245 static DBusMessage *change_session(DBusConnection *conn,
1246                                         DBusMessage *msg, void *user_data)
1247 {
1248         struct connman_session *session = user_data;
1249         struct session_info *info = session->info;
1250         DBusMessageIter iter, value;
1251         const char *name;
1252         const char *val;
1253         GSList *allowed_bearers;
1254
1255         DBG("session %p", session);
1256         if (dbus_message_iter_init(msg, &iter) == FALSE)
1257                 return __connman_error_invalid_arguments(msg);
1258
1259         dbus_message_iter_get_basic(&iter, &name);
1260         dbus_message_iter_next(&iter);
1261         dbus_message_iter_recurse(&iter, &value);
1262
1263         switch (dbus_message_iter_get_arg_type(&value)) {
1264         case DBUS_TYPE_ARRAY:
1265                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1266                         allowed_bearers = session_parse_allowed_bearers(&value);
1267
1268                         g_slist_foreach(info->allowed_bearers,
1269                                         cleanup_bearer_info, NULL);
1270                         g_slist_free(info->allowed_bearers);
1271
1272                         if (allowed_bearers == NULL) {
1273                                 allowed_bearers = session_allowed_bearers_any();
1274
1275                                 if (allowed_bearers == NULL)
1276                                         return __connman_error_failed(msg, ENOMEM);
1277                         }
1278
1279                         info->allowed_bearers = allowed_bearers;
1280                 } else {
1281                         goto err;
1282                 }
1283                 break;
1284         case DBUS_TYPE_STRING:
1285                 if (g_str_equal(name, "ConnectionType") == TRUE) {
1286                         dbus_message_iter_get_basic(&value, &val);
1287                         info->type = string2type(val);
1288                 } else {
1289                         goto err;
1290                 }
1291                 break;
1292         default:
1293                 goto err;
1294         }
1295
1296         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1297
1298         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1299
1300 err:
1301         return __connman_error_invalid_arguments(msg);
1302 }
1303
1304 static void release_session(gpointer key, gpointer value, gpointer user_data)
1305 {
1306         struct connman_session *session = value;
1307         DBusMessage *message;
1308
1309         DBG("owner %s path %s", session->owner, session->notify_path);
1310
1311         if (session->notify_watch > 0)
1312                 g_dbus_remove_watch(connection, session->notify_watch);
1313
1314         g_dbus_unregister_interface(connection, session->session_path,
1315                                                 CONNMAN_SESSION_INTERFACE);
1316
1317         message = dbus_message_new_method_call(session->owner,
1318                                                 session->notify_path,
1319                                                 CONNMAN_NOTIFICATION_INTERFACE,
1320                                                 "Release");
1321         if (message == NULL)
1322                 return;
1323
1324         dbus_message_set_no_reply(message, TRUE);
1325
1326         g_dbus_send_message(connection, message);
1327 }
1328
1329 static int session_disconnect(struct connman_session *session)
1330 {
1331         DBG("session %p, %s", session, session->owner);
1332
1333         if (session->notify_watch > 0)
1334                 g_dbus_remove_watch(connection, session->notify_watch);
1335
1336         g_dbus_unregister_interface(connection, session->session_path,
1337                                                 CONNMAN_SESSION_INTERFACE);
1338
1339         deselect_and_disconnect(session);
1340
1341         g_hash_table_remove(session_hash, session->session_path);
1342
1343         return 0;
1344 }
1345
1346 static void owner_disconnect(DBusConnection *conn, void *user_data)
1347 {
1348         struct connman_session *session = user_data;
1349
1350         DBG("session %p, %s died", session, session->owner);
1351
1352         session_disconnect(session);
1353 }
1354
1355 static DBusMessage *destroy_session(DBusConnection *conn,
1356                                         DBusMessage *msg, void *user_data)
1357 {
1358         struct connman_session *session = user_data;
1359
1360         DBG("session %p", session);
1361
1362         if (ecall_session != NULL && ecall_session != session)
1363                 return __connman_error_failed(msg, EBUSY);
1364
1365         session_disconnect(session);
1366
1367         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1368 }
1369
1370 static const GDBusMethodTable session_methods[] = {
1371         { GDBUS_METHOD("Destroy", NULL, NULL, destroy_session) },
1372         { GDBUS_METHOD("Connect", NULL, NULL, connect_session) },
1373         { GDBUS_METHOD("Disconnect", NULL, NULL,
1374                         disconnect_session ) },
1375         { GDBUS_METHOD("Change",
1376                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
1377                         NULL, change_session) },
1378         { },
1379 };
1380
1381 int __connman_session_create(DBusMessage *msg)
1382 {
1383         const char *owner, *notify_path;
1384         char *session_path = NULL;
1385         DBusMessageIter iter, array;
1386         struct connman_session *session = NULL;
1387         struct session_info *info, *info_last;
1388
1389         enum connman_session_type type = CONNMAN_SESSION_TYPE_ANY;
1390         connman_bool_t priority;
1391         connman_bool_t ecall_app;
1392         enum connman_session_roaming_policy roaming_policy;
1393         char *roaming_policy_str;
1394         GSList *allowed_bearers = NULL;
1395         int err;
1396
1397         owner = dbus_message_get_sender(msg);
1398
1399         DBG("owner %s", owner);
1400
1401         if (ecall_session != NULL && ecall_session->ecall == TRUE) {
1402                 /*
1403                  * If there is an emergency call already going on,
1404                  * ignore session creation attempt
1405                  */
1406                 err = -EBUSY;
1407                 goto err;
1408         }
1409
1410         dbus_message_iter_init(msg, &iter);
1411         dbus_message_iter_recurse(&iter, &array);
1412
1413         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1414                 DBusMessageIter entry, value;
1415                 const char *key, *val;
1416
1417                 dbus_message_iter_recurse(&array, &entry);
1418                 dbus_message_iter_get_basic(&entry, &key);
1419
1420                 dbus_message_iter_next(&entry);
1421                 dbus_message_iter_recurse(&entry, &value);
1422
1423                 switch (dbus_message_iter_get_arg_type(&value)) {
1424                 case DBUS_TYPE_ARRAY:
1425                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1426                                 allowed_bearers =
1427                                         session_parse_allowed_bearers(&value);
1428                         } else {
1429                                 return -EINVAL;
1430                         }
1431                         break;
1432                 case DBUS_TYPE_STRING:
1433                         if (g_str_equal(key, "ConnectionType") == TRUE) {
1434                                 dbus_message_iter_get_basic(&value, &val);
1435                                 type = string2type(val);
1436                         } else {
1437                                 return -EINVAL;
1438                         }
1439                 }
1440                 dbus_message_iter_next(&array);
1441         }
1442
1443         dbus_message_iter_next(&iter);
1444         dbus_message_iter_get_basic(&iter, &notify_path);
1445
1446         if (notify_path == NULL) {
1447                 err = -EINVAL;
1448                 goto err;
1449         }
1450
1451         session_path = g_strdup_printf("/sessions%s", notify_path);
1452         if (session_path == NULL) {
1453                 err = -ENOMEM;
1454                 goto err;
1455         }
1456
1457         session = g_hash_table_lookup(session_hash, session_path);
1458         if (session != NULL) {
1459                 session = NULL;
1460                 err = -EEXIST;
1461                 goto err;
1462         }
1463
1464         session = g_try_new0(struct connman_session, 1);
1465         if (session == NULL) {
1466                 err = -ENOMEM;
1467                 goto err;
1468         }
1469
1470         session->info = g_try_new0(struct session_info, 1);
1471         if (session->info == NULL) {
1472                 err = -ENOMEM;
1473                 goto err;
1474         }
1475
1476         session->info_last = g_try_new0(struct session_info, 1);
1477         if (session->info_last == NULL) {
1478                 err = -ENOMEM;
1479                 goto err;
1480         }
1481
1482         info = session->info;
1483         info_last = session->info_last;
1484
1485         config_get_bool(owner, "Priority", &priority);
1486         config_get_bool(owner, "EmergencyCall", &ecall_app);
1487         config_get_string(owner, "RoamingPolicy", &roaming_policy_str);
1488         roaming_policy = string2roamingpolicy(roaming_policy_str);
1489
1490         session->owner = g_strdup(owner);
1491         session->session_path = session_path;
1492         session->notify_path = g_strdup(notify_path);
1493         session->notify_watch =
1494                 g_dbus_add_disconnect_watch(connection, session->owner,
1495                                         owner_disconnect, session, NULL);
1496         if (ecall_app == TRUE)
1497                 ecall_session = session;
1498
1499         info->state = CONNMAN_SESSION_STATE_DISCONNECTED;
1500         info->type = type;
1501         info->priority = priority;
1502         info->roaming_policy = roaming_policy;
1503         info->entry = NULL;
1504
1505         if (allowed_bearers == NULL) {
1506                 info->allowed_bearers =
1507                                 session_allowed_bearers_any();
1508
1509                 if (info->allowed_bearers == NULL) {
1510                         err = -ENOMEM;
1511                         goto err;
1512                 }
1513         } else {
1514                 info->allowed_bearers = allowed_bearers;
1515         }
1516
1517         g_hash_table_replace(session_hash, session->session_path, session);
1518
1519         DBG("add %s", session->session_path);
1520
1521         if (g_dbus_register_interface(connection, session->session_path,
1522                                         CONNMAN_SESSION_INTERFACE,
1523                                         session_methods, NULL,
1524                                         NULL, session, NULL) == FALSE) {
1525                 connman_error("Failed to register %s", session->session_path);
1526                 g_hash_table_remove(session_hash, session->session_path);
1527                 session = NULL;
1528
1529                 err = -EINVAL;
1530                 goto err;
1531         }
1532
1533         g_dbus_send_reply(connection, msg,
1534                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1535                                 DBUS_TYPE_INVALID);
1536
1537
1538         populate_service_list(session);
1539
1540         info_last->state = info->state;
1541         info_last->priority = info->priority;
1542         info_last->roaming_policy = info->roaming_policy;
1543         info_last->entry = info->entry;
1544         info_last->allowed_bearers = info->allowed_bearers;
1545
1546         session->append_all = TRUE;
1547
1548         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1549
1550         return 0;
1551
1552 err:
1553         connman_error("Failed to create session");
1554
1555         if (session != NULL) {
1556                 if (session->info_last != NULL)
1557                         g_free(session->info_last);
1558                 if (session->info != NULL)
1559                         g_free(session->info);
1560                 g_free(session);
1561         }
1562
1563         g_free(session_path);
1564
1565         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1566         g_slist_free(allowed_bearers);
1567
1568         return err;
1569 }
1570
1571 int __connman_session_destroy(DBusMessage *msg)
1572 {
1573         const char *owner, *session_path;
1574         struct connman_session *session;
1575
1576         owner = dbus_message_get_sender(msg);
1577
1578         DBG("owner %s", owner);
1579
1580         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1581                                                         DBUS_TYPE_INVALID);
1582         if (session_path == NULL)
1583                 return -EINVAL;
1584
1585         session = g_hash_table_lookup(session_hash, session_path);
1586         if (session == NULL)
1587                 return -EINVAL;
1588
1589         if (g_strcmp0(owner, session->owner) != 0)
1590                 return -EACCES;
1591
1592         session_disconnect(session);
1593
1594         return 0;
1595 }
1596
1597 connman_bool_t __connman_session_mode()
1598 {
1599         return sessionmode;
1600 }
1601
1602 void __connman_session_set_mode(connman_bool_t enable)
1603 {
1604         DBG("enable %d", enable);
1605
1606         if (sessionmode != enable) {
1607                 sessionmode = enable;
1608
1609                 connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
1610                                 CONNMAN_MANAGER_INTERFACE, "SessionMode",
1611                                 DBUS_TYPE_BOOLEAN, &sessionmode);
1612         }
1613
1614         if (sessionmode == TRUE)
1615                 __connman_service_disconnect_all();
1616 }
1617
1618 static void service_add(struct connman_service *service,
1619                         const char *name)
1620 {
1621         GHashTableIter iter;
1622         GSequenceIter *iter_service_list;
1623         gpointer key, value;
1624         struct connman_session *session;
1625         struct service_entry *entry;
1626
1627         DBG("service %p", service);
1628
1629         g_hash_table_iter_init(&iter, session_hash);
1630
1631         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1632                 session = value;
1633
1634                 if (service_match(session, service) == FALSE)
1635                         continue;
1636
1637                 entry = create_service_entry(service, name,
1638                                                 CONNMAN_SERVICE_STATE_IDLE);
1639                 if (entry == NULL)
1640                         continue;
1641
1642                 iter_service_list =
1643                         g_sequence_insert_sorted(session->service_list,
1644                                                         entry, sort_services,
1645                                                         session);
1646
1647                 g_hash_table_replace(session->service_hash, service,
1648                                         iter_service_list);
1649
1650                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1651         }
1652 }
1653
1654 static void service_remove(struct connman_service *service)
1655 {
1656
1657         GHashTableIter iter;
1658         gpointer key, value;
1659         struct connman_session *session;
1660         struct session_info *info;
1661
1662         DBG("service %p", service);
1663
1664         g_hash_table_iter_init(&iter, session_hash);
1665
1666         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1667                 GSequenceIter *seq_iter;
1668                 session = value;
1669                 info = session->info;
1670
1671                 seq_iter = g_hash_table_lookup(session->service_hash, service);
1672                 if (seq_iter == NULL)
1673                         continue;
1674
1675                 g_sequence_remove(seq_iter);
1676
1677                 if (info->entry != NULL && info->entry->service == service)
1678                         info->entry = NULL;
1679                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1680         }
1681 }
1682
1683 static void service_state_changed(struct connman_service *service,
1684                                         enum connman_service_state state)
1685 {
1686         GHashTableIter iter;
1687         gpointer key, value;
1688
1689         DBG("service %p state %d", service, state);
1690
1691         g_hash_table_iter_init(&iter, session_hash);
1692
1693         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1694                 struct connman_session *session = value;
1695                 GSequenceIter *service_iter;
1696
1697                 service_iter = g_hash_table_lookup(session->service_hash, service);
1698                 if (service_iter != NULL) {
1699                         struct service_entry *entry;
1700
1701                         entry = g_sequence_get(service_iter);
1702                         entry->state = state;
1703                 }
1704
1705                 session_changed(session,
1706                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1707         }
1708 }
1709
1710 static void ipconfig_changed(struct connman_service *service,
1711                                 struct connman_ipconfig *ipconfig)
1712 {
1713         GHashTableIter iter;
1714         gpointer key, value;
1715         struct connman_session *session;
1716         struct session_info *info;
1717         enum connman_ipconfig_type type;
1718
1719         DBG("service %p ipconfig %p", service, ipconfig);
1720
1721         type = __connman_ipconfig_get_config_type(ipconfig);
1722
1723         g_hash_table_iter_init(&iter, session_hash);
1724
1725         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1726                 session = value;
1727                 info = session->info;
1728
1729                 if (info->state == CONNMAN_SESSION_STATE_DISCONNECTED)
1730                         continue;
1731
1732                 if (info->entry != NULL && info->entry->service == service) {
1733                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1734                                 ipconfig_ipv4_changed(session);
1735                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1736                                 ipconfig_ipv6_changed(session);
1737                 }
1738         }
1739 }
1740
1741 static struct connman_notifier session_notifier = {
1742         .name                   = "session",
1743         .service_add            = service_add,
1744         .service_remove         = service_remove,
1745         .service_state_changed  = service_state_changed,
1746         .ipconfig_changed       = ipconfig_changed,
1747 };
1748
1749 static struct connman_session *session_lookup_by_id(const char *id)
1750 {
1751         struct connman_session *session;
1752         GHashTableIter iter;
1753         gpointer key, value;
1754
1755         DBG("id %s", id);
1756
1757         g_hash_table_iter_init(&iter, session_hash);
1758
1759         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1760                 session = value;
1761
1762                 if (g_strcmp0(session->owner, id) == FALSE)
1763                         continue;
1764
1765                 return session;
1766         }
1767
1768         DBG("No session found by id %s", id);
1769
1770         return NULL;
1771 }
1772
1773 int connman_session_update_bool(const char *id, const char *key,
1774                                         connman_bool_t val)
1775 {
1776         struct connman_session *session;
1777         struct session_info *info;
1778
1779         session = session_lookup_by_id(id);
1780         if (session == NULL)
1781                 return -EINVAL;
1782
1783         info = session->info;
1784         if (info == NULL)
1785                 return 0;
1786
1787         DBG("%s %d", key, val);
1788
1789         return -EINVAL;
1790 }
1791
1792 int connman_session_update_string(const char *id, const char *key,
1793                                         const char *val)
1794 {
1795         struct connman_session *session;
1796         struct session_info *info;
1797
1798         session = session_lookup_by_id(id);
1799         if (session == NULL)
1800                 return -EINVAL;
1801
1802         info = session->info;
1803         if (info == NULL)
1804                 return 0;
1805
1806         DBG("%s %s", key, val);
1807
1808         return -EINVAL;
1809 }
1810
1811 int connman_session_config_register(struct connman_session_config *config)
1812 {
1813         DBG("name %s", config->name);
1814
1815         if (session_config != NULL) {
1816                 connman_warn("A session configuration plugin '%s' is "
1817                                 "already registerd. Skipping registration "
1818                                 "of plugin '%s'",
1819                                 session_config->name, config->name);
1820                 return -EALREADY;
1821         }
1822
1823         session_config = config;
1824
1825         return 0;
1826 }
1827
1828 void connman_session_config_unregister(struct connman_session_config *config)
1829 {
1830         DBG("name %s", config->name);
1831
1832         if (config != session_config) {
1833                 connman_warn("Trying to unregister session configuration "
1834                                 "plugin '%s'", config->name);
1835                 return;
1836         }
1837
1838         session_config = NULL;
1839 }
1840
1841 int __connman_session_init(void)
1842 {
1843         int err;
1844
1845         DBG("");
1846
1847         connection = connman_dbus_get_connection();
1848         if (connection == NULL)
1849                 return -1;
1850
1851         err = connman_notifier_register(&session_notifier);
1852         if (err < 0) {
1853                 dbus_connection_unref(connection);
1854                 return err;
1855         }
1856
1857         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1858                                                 NULL, cleanup_session);
1859
1860         sessionmode = FALSE;
1861         return 0;
1862 }
1863
1864 void __connman_session_cleanup(void)
1865 {
1866         DBG("");
1867
1868         if (connection == NULL)
1869                 return;
1870
1871         connman_notifier_unregister(&session_notifier);
1872
1873         g_hash_table_foreach(session_hash, release_session, NULL);
1874         g_hash_table_destroy(session_hash);
1875         session_hash = NULL;
1876
1877         dbus_connection_unref(connection);
1878 }