vpn/vpn-provider.c

   1 /*
   2  *
   3  *  ConnMan VPN daemon
   4  *
   5  *  Copyright (C) 2012-2013  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2019  Jolla Ltd. 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 #include <stdio.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <gdbus.h>
  32 #include <connman/log.h>
  33 #include <gweb/gresolv.h>
  34 #include <netdb.h>
  35
  36 #include "../src/connman.h"
  37 #include "connman/agent.h"
  38 #include "connman/vpn-dbus.h"
  39 #include "vpn-provider.h"
  40 #include "vpn.h"
  41 #include "plugins/vpn.h"
  42
  43 static DBusConnection *connection;
  44 static GHashTable *provider_hash;
  45 static GSList *driver_list;
  46 static int configuration_count;
  47
  48 struct vpn_route {
  49         int family;
  50         char *network;
  51         char *netmask;
  52         char *gateway;
  53 };
  54
  55 struct vpn_setting {
  56         bool hide_value;
  57         bool immutable;
  58         char *value;
  59 };
  60
  61 struct vpn_provider {
  62         int refcount;
  63         int index;
  64         int fd;
  65         enum vpn_provider_state state;
  66         char *path;
  67         char *identifier;
  68         char *name;
  69         char *type;
  70         char *host;
  71         char *domain;
  72         int family;
  73         bool do_split_routing;
  74         GHashTable *routes;
  75         struct vpn_provider_driver *driver;
  76         void *driver_data;
  77         GHashTable *setting_strings;
  78         GHashTable *user_routes;
  79         GSList *user_networks;
  80         GResolv *resolv;
  81         char **host_ip;
  82         struct vpn_ipconfig *ipconfig_ipv4;
  83         struct vpn_ipconfig *ipconfig_ipv6;
  84         char **nameservers;
  85         guint notify_id;
  86         char *config_file;
  87         char *config_entry;
  88         bool immutable;
  89         struct connman_ipaddress *prev_ipv4_addr;
  90         struct connman_ipaddress *prev_ipv6_addr;
  91         void *plugin_data;
  92         unsigned int auth_error_counter;
  93         unsigned int conn_error_counter;
  94         unsigned int signal_watch;
  95 };
  96
  97 static void append_properties(DBusMessageIter *iter,
  98                                 struct vpn_provider *provider);
  99 static int vpn_provider_save(struct vpn_provider *provider);
 100
 101 static void free_route(gpointer data)
 102 {
 103         struct vpn_route *route = data;
 104
 105         g_free(route->network);
 106         g_free(route->netmask);
 107         g_free(route->gateway);
 108
 109         g_free(route);
 110 }
 111
 112 static void free_setting(gpointer data)
 113 {
 114         struct vpn_setting *setting = data;
 115
 116         g_free(setting->value);
 117         g_free(setting);
 118 }
 119
 120 static void append_route(DBusMessageIter *iter, void *user_data)
 121 {
 122         struct vpn_route *route = user_data;
 123         DBusMessageIter item;
 124         int family = 0;
 125
 126         connman_dbus_dict_open(iter, &item);
 127
 128         if (!route)
 129                 goto empty_dict;
 130
 131         if (route->family == AF_INET)
 132                 family = 4;
 133         else if (route->family == AF_INET6)
 134                 family = 6;
 135
 136         if (family != 0)
 137                 connman_dbus_dict_append_basic(&item, "ProtocolFamily",
 138                                         DBUS_TYPE_INT32, &family);
 139
 140         if (route->network)
 141                 connman_dbus_dict_append_basic(&item, "Network",
 142                                         DBUS_TYPE_STRING, &route->network);
 143
 144         if (route->netmask)
 145                 connman_dbus_dict_append_basic(&item, "Netmask",
 146                                         DBUS_TYPE_STRING, &route->netmask);
 147
 148         if (route->gateway)
 149                 connman_dbus_dict_append_basic(&item, "Gateway",
 150                                         DBUS_TYPE_STRING, &route->gateway);
 151
 152 empty_dict:
 153         connman_dbus_dict_close(iter, &item);
 154 }
 155
 156 static void append_routes(DBusMessageIter *iter, void *user_data)
 157 {
 158         GHashTable *routes = user_data;
 159         GHashTableIter hash;
 160         gpointer value, key;
 161
 162         if (!routes) {
 163                 append_route(iter, NULL);
 164                 return;
 165         }
 166
 167         g_hash_table_iter_init(&hash, routes);
 168
 169         while (g_hash_table_iter_next(&hash, &key, &value)) {
 170                 DBusMessageIter dict;
 171
 172                 dbus_message_iter_open_container(iter, DBUS_TYPE_STRUCT, NULL,
 173                                                 &dict);
 174                 append_route(&dict, value);
 175                 dbus_message_iter_close_container(iter, &dict);
 176         }
 177 }
 178
 179 static void send_routes(struct vpn_provider *provider, GHashTable *routes,
 180                         const char *name)
 181 {
 182         connman_dbus_property_changed_array(provider->path,
 183                                         VPN_CONNECTION_INTERFACE,
 184                                         name,
 185                                         DBUS_TYPE_DICT_ENTRY,
 186                                         append_routes,
 187                                         routes);
 188 }
 189
 190 static int provider_routes_changed(struct vpn_provider *provider)
 191 {
 192         DBG("provider %p", provider);
 193
 194         send_routes(provider, provider->routes, "ServerRoutes");
 195
 196         return 0;
 197 }
 198
 199 /*
 200  * Sort vpn_route struct based on (similarly to the route key in hash table):
 201  * 1) IP protocol number
 202  * 2) Network addresses
 203  * 3) Netmask addresses
 204  * 4) Gateway addresses
 205  */
 206 static gint compare_route(gconstpointer a, gconstpointer b)
 207 {
 208         const struct vpn_route *route_a = a;
 209         const struct vpn_route *route_b = b;
 210         int difference;
 211
 212         /* If IP families differ, prefer IPv6 over IPv4 */
 213         if (route_a->family != route_b->family) {
 214                 if (route_a->family < route_b->family)
 215                         return -1;
 216
 217                 if (route_a->family > route_b->family)
 218                         return 1;
 219         }
 220
 221         /* If networks differ, return  */
 222         if ((difference = g_strcmp0(route_a->network, route_b->network)))
 223                 return difference;
 224
 225         /* If netmasks differ, return. */
 226         if ((difference = g_strcmp0(route_a->netmask, route_b->netmask)))
 227                 return difference;
 228
 229         return g_strcmp0(route_a->gateway, route_b->gateway);
 230 }
 231
 232 static GSList *read_route_dict(GSList *routes, DBusMessageIter *dicts)
 233 {
 234         DBusMessageIter dict, value, entry;
 235         const char *network, *netmask, *gateway;
 236         struct vpn_route *route;
 237         int family, type;
 238         const char *key;
 239
 240         dbus_message_iter_recurse(dicts, &entry);
 241
 242         network = netmask = gateway = NULL;
 243         family = PF_UNSPEC;
 244
 245         while (dbus_message_iter_get_arg_type(&entry) == DBUS_TYPE_DICT_ENTRY) {
 246
 247                 dbus_message_iter_recurse(&entry, &dict);
 248                 dbus_message_iter_get_basic(&dict, &key);
 249
 250                 dbus_message_iter_next(&dict);
 251                 dbus_message_iter_recurse(&dict, &value);
 252
 253                 type = dbus_message_iter_get_arg_type(&value);
 254
 255                 switch (type) {
 256                 case DBUS_TYPE_INT32:
 257                         if (g_str_equal(key, "ProtocolFamily"))
 258                                 dbus_message_iter_get_basic(&value, &family);
 259                         break;
 260
 261                 case DBUS_TYPE_STRING:
 262                         if (g_str_equal(key, "Network"))
 263                                 dbus_message_iter_get_basic(&value, &network);
 264                         else if (g_str_equal(key, "Netmask"))
 265                                 dbus_message_iter_get_basic(&value, &netmask);
 266                         else if (g_str_equal(key, "Gateway"))
 267                                 dbus_message_iter_get_basic(&value, &gateway);
 268                         break;
 269                 }
 270
 271                 dbus_message_iter_next(&entry);
 272         }
 273
 274         DBG("family %d network %s netmask %s gateway %s", family,
 275                 network, netmask, gateway);
 276
 277         if (!network || !netmask) {
 278                 DBG("Ignoring route as network/netmask is missing");
 279                 return routes;
 280         }
 281
 282         route = g_try_new(struct vpn_route, 1);
 283         if (!route) {
 284                 g_slist_free_full(routes, free_route);
 285                 return NULL;
 286         }
 287
 288         if (family == PF_UNSPEC) {
 289                 family = connman_inet_check_ipaddress(network);
 290                 if (family < 0) {
 291                         DBG("Cannot get address family of %s (%d/%s)", network,
 292                                 family, gai_strerror(family));
 293
 294                         g_free(route);
 295                         return routes;
 296                 }
 297         } else {
 298                 switch (family) {
 299                 case '4':
 300                 case 4:
 301                         family = AF_INET;
 302                         break;
 303                 case '6':
 304                 case 6:
 305                         family = AF_INET6;
 306                         break;
 307                 default:
 308                         family = PF_UNSPEC;
 309                         break;
 310                 }
 311         }
 312
 313         route->family = family;
 314         route->network = g_strdup(network);
 315         route->netmask = g_strdup(netmask);
 316         route->gateway = g_strdup(gateway);
 317
 318         routes = g_slist_insert_sorted(routes, route, compare_route);
 319         return routes;
 320 }
 321
 322 static GSList *get_user_networks(DBusMessageIter *array)
 323 {
 324         DBusMessageIter entry;
 325         GSList *list = NULL;
 326
 327         while (dbus_message_iter_get_arg_type(array) == DBUS_TYPE_ARRAY) {
 328
 329                 dbus_message_iter_recurse(array, &entry);
 330
 331                 while (dbus_message_iter_get_arg_type(&entry) ==
 332                                                         DBUS_TYPE_STRUCT) {
 333                         DBusMessageIter dicts;
 334
 335                         dbus_message_iter_recurse(&entry, &dicts);
 336
 337                         while (dbus_message_iter_get_arg_type(&dicts) ==
 338                                                         DBUS_TYPE_ARRAY) {
 339
 340                                 list = read_route_dict(list, &dicts);
 341                                 dbus_message_iter_next(&dicts);
 342                         }
 343
 344                         dbus_message_iter_next(&entry);
 345                 }
 346
 347                 dbus_message_iter_next(array);
 348         }
 349
 350         return list;
 351 }
 352
 353 static void set_user_networks(struct vpn_provider *provider, GSList *networks)
 354 {
 355         GSList *list;
 356
 357         for (list = networks; list; list = g_slist_next(list)) {
 358                 struct vpn_route *route = list->data;
 359
 360                 if (__vpn_provider_append_user_route(provider,
 361                                         route->family, route->network,
 362                                         route->netmask, route->gateway) != 0)
 363                         break;
 364         }
 365 }
 366
 367 static void del_routes(struct vpn_provider *provider)
 368 {
 369         GHashTableIter hash;
 370
 371         g_hash_table_iter_init(&hash, provider->user_routes);
 372         g_hash_table_remove_all(provider->user_routes);
 373         g_slist_free_full(provider->user_networks, free_route);
 374         provider->user_networks = NULL;
 375 }
 376
 377 static void send_value(const char *path, const char *key, const char *value)
 378 {
 379         const char *empty = "";
 380         const char *str;
 381
 382         if (value)
 383                 str = value;
 384         else
 385                 str = empty;
 386
 387         connman_dbus_property_changed_basic(path,
 388                                         VPN_CONNECTION_INTERFACE,
 389                                         key,
 390                                         DBUS_TYPE_STRING,
 391                                         &str);
 392 }
 393
 394 static void send_value_boolean(const char *path, const char *key,
 395                                                         dbus_bool_t value)
 396 {
 397         connman_dbus_property_changed_basic(path,
 398                                         VPN_CONNECTION_INTERFACE,
 399                                         key,
 400                                         DBUS_TYPE_BOOLEAN,
 401                                         &value);
 402 }
 403
 404 static gboolean provider_send_changed(gpointer data)
 405 {
 406         struct vpn_provider *provider = data;
 407
 408         provider_routes_changed(provider);
 409
 410         provider->notify_id = 0;
 411
 412         return FALSE;
 413 }
 414
 415 static void provider_schedule_changed(struct vpn_provider *provider)
 416 {
 417         if (provider->notify_id != 0)
 418                 g_source_remove(provider->notify_id);
 419
 420         provider->notify_id = g_timeout_add(100, provider_send_changed,
 421                                                                 provider);
 422 }
 423
 424 static DBusMessage *get_properties(DBusConnection *conn,
 425                                         DBusMessage *msg, void *data)
 426 {
 427         struct vpn_provider *provider = data;
 428         DBusMessage *reply;
 429         DBusMessageIter array;
 430
 431         DBG("provider %p", provider);
 432
 433         reply = dbus_message_new_method_return(msg);
 434         if (!reply)
 435                 return NULL;
 436
 437         dbus_message_iter_init_append(reply, &array);
 438
 439         append_properties(&array, provider);
 440
 441         return reply;
 442 }
 443
 444 /* True when lists are equal, false otherwise */
 445 static bool compare_network_lists(GSList *a, GSList *b)
 446 {
 447         struct vpn_route *route_a, *route_b;
 448         GSList *iter_a, *iter_b;
 449
 450         if (!a && !b)
 451                 return true;
 452
 453         /*
 454          * If either of lists is NULL or the lists are of different size, the
 455          * lists are not equal.
 456          */
 457         if ((!a || !b) || (g_slist_length(a) != g_slist_length(b)))
 458                 return false;
 459
 460         /* Routes are in sorted list so items can be compared in order. */
 461         for (iter_a = a, iter_b = b; iter_a && iter_b;
 462                                 iter_a = iter_a->next, iter_b = iter_b->next) {
 463
 464                 route_a = iter_a->data;
 465                 route_b = iter_b->data;
 466
 467                 if (compare_route(route_a, route_b))
 468                         return false;
 469         }
 470
 471         return true;
 472 }
 473
 474 static const char *bool2str(bool value)
 475 {
 476         return value ? "true" : "false";
 477 }
 478
 479 static int set_provider_property(struct vpn_provider *provider,
 480                         const char *name, DBusMessageIter *value, int type)
 481 {
 482         int err = 0;
 483
 484         DBG("provider %p", provider);
 485
 486         if (!provider || !name || !value)
 487                 return -EINVAL;
 488
 489         if (g_str_equal(name, "UserRoutes")) {
 490                 GSList *networks;
 491
 492                 if (type != DBUS_TYPE_ARRAY)
 493                         return -EINVAL;
 494
 495                 networks = get_user_networks(value);
 496
 497                 if (compare_network_lists(provider->user_networks, networks)) {
 498                         g_slist_free_full(networks, free_route);
 499                         return -EALREADY;
 500                 }
 501
 502                 del_routes(provider);
 503                 provider->user_networks = networks;
 504                 set_user_networks(provider, provider->user_networks);
 505                 send_routes(provider, provider->user_routes, "UserRoutes");
 506         } else if (g_str_equal(name, "SplitRouting")) {
 507                 dbus_bool_t split_routing;
 508
 509                 if (type != DBUS_TYPE_BOOLEAN)
 510                         return -EINVAL;
 511
 512                 dbus_message_iter_get_basic(value, &split_routing);
 513
 514                 DBG("property %s value %s ", name, bool2str(split_routing));
 515                 vpn_provider_set_boolean(provider, name, split_routing, false);
 516         } else {
 517                 const char *str;
 518
 519                 if (type != DBUS_TYPE_STRING)
 520                         return -EINVAL;
 521
 522                 dbus_message_iter_get_basic(value, &str);
 523
 524                 DBG("property %s value %s", name, str);
 525
 526                 /* Empty string clears the value, similar to ClearProperty. */
 527                 err = vpn_provider_set_string(provider, name,
 528                                         *str ? str : NULL);
 529         }
 530
 531         return err;
 532 }
 533
 534 static GString *append_to_gstring(GString *str, const char *value)
 535 {
 536         if (!str)
 537                 return g_string_new(value);
 538
 539         g_string_append_printf(str, ",%s", value);
 540
 541         return str;
 542 }
 543
 544 static DBusMessage *set_properties(DBusMessageIter *iter, DBusMessage *msg,
 545                                                                 void *data)
 546 {
 547         struct vpn_provider *provider = data;
 548         DBusMessageIter dict;
 549         const char *key;
 550         bool change = false;
 551         GString *invalid = NULL;
 552         GString *denied = NULL;
 553         int type;
 554         int err;
 555
 556         for (dbus_message_iter_recurse(iter, &dict);
 557                                 dbus_message_iter_get_arg_type(&dict) ==
 558                                 DBUS_TYPE_DICT_ENTRY;
 559                                 dbus_message_iter_next(&dict)) {
 560                 DBusMessageIter entry, value;
 561
 562                 dbus_message_iter_recurse(&dict, &entry);
 563                 /*
 564                  * Ignore invalid types in order to process all values in the
 565                  * dict. If there is an invalid type in between the dict there
 566                  * may already be changes on some values and breaking out here
 567                  *  would have the provider in an inconsistent state, leaving
 568                  * the rest, potentially correct property values untouched.
 569                  */
 570                 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
 571                         continue;
 572
 573                 dbus_message_iter_get_basic(&entry, &key);
 574
 575                 DBG("key %s", key);
 576
 577                 dbus_message_iter_next(&entry);
 578                 /* Ignore and report back all non variant types. */
 579                 if (dbus_message_iter_get_arg_type(&entry)
 580                                         != DBUS_TYPE_VARIANT) {
 581                         invalid = append_to_gstring(invalid, key);
 582                         continue;
 583                 }
 584
 585                 dbus_message_iter_recurse(&entry, &value);
 586
 587                 type = dbus_message_iter_get_arg_type(&value);
 588                 switch (type) {
 589                 case DBUS_TYPE_STRING:
 590                 case DBUS_TYPE_ARRAY:
 591                 case DBUS_TYPE_BOOLEAN:
 592                         break;
 593                 default:
 594                         /* Ignore and report back all invalid property types */
 595                         invalid = append_to_gstring(invalid, key);
 596                         continue;
 597                 }
 598
 599                 err = set_provider_property(provider, key, &value, type);
 600                 switch (err) {
 601                 case 0:
 602                         change = true;
 603                         break;
 604                 case -EINVAL:
 605                         invalid = append_to_gstring(invalid, key);
 606                         break;
 607                 case -EPERM:
 608                         denied = append_to_gstring(denied, key);
 609                         break;
 610                 }
 611         }
 612
 613         if (change)
 614                 vpn_provider_save(provider);
 615
 616         if (invalid || denied) {
 617                 DBusMessage *error;
 618                 char *invalid_str = g_string_free(invalid, FALSE);
 619                 char *denied_str = g_string_free(denied, FALSE);
 620
 621                 /*
 622                  * If there are both invalid and denied properties report
 623                  * back invalid arguments. Add also the failed properties to
 624                  * the error message.
 625                  */
 626                 error = g_dbus_create_error(msg, (invalid ?
 627                                 CONNMAN_ERROR_INTERFACE ".InvalidProperty" :
 628                                 CONNMAN_ERROR_INTERFACE ".PermissionDenied"),
 629                                 "%s %s%s%s", (invalid ? "Invalid properties" :
 630                                 "Permission denied"),
 631                                 (invalid ? invalid_str : ""),
 632                                 (invalid && denied ? "," : ""),
 633                                 (denied ? denied_str : ""));
 634
 635                 g_free(invalid_str);
 636                 g_free(denied_str);
 637
 638                 return error;
 639         }
 640
 641         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 642 }
 643
 644 static DBusMessage *set_property(DBusConnection *conn, DBusMessage *msg,
 645                                                                 void *data)
 646 {
 647         struct vpn_provider *provider = data;
 648         DBusMessageIter iter, value;
 649         const char *name;
 650         int type;
 651         int err;
 652
 653         DBG("conn %p", conn);
 654
 655         if (provider->immutable)
 656                 return __connman_error_not_supported(msg);
 657
 658         if (!dbus_message_iter_init(msg, &iter))
 659                 return __connman_error_invalid_arguments(msg);
 660
 661         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 662                 return __connman_error_invalid_arguments(msg);
 663
 664         dbus_message_iter_get_basic(&iter, &name);
 665         dbus_message_iter_next(&iter);
 666
 667         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 668                 return __connman_error_invalid_arguments(msg);
 669
 670         dbus_message_iter_recurse(&iter, &value);
 671
 672         type = dbus_message_iter_get_arg_type(&value);
 673         if (type == DBUS_TYPE_ARRAY && g_str_equal(name, "Properties"))
 674                 return set_properties(&value, msg, data);
 675
 676         err = set_provider_property(provider, name, &value, type);
 677         switch (err) {
 678         case 0:
 679                 vpn_provider_save(provider);
 680                 break;
 681         case -EALREADY:
 682                 break;
 683         case -EINVAL:
 684                 return __connman_error_invalid_property(msg);
 685         default:
 686                 return __connman_error_failed(msg, -err);
 687         }
 688
 689         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 690 }
 691
 692 static DBusMessage *clear_property(DBusConnection *conn, DBusMessage *msg,
 693                                                                 void *data)
 694 {
 695         struct vpn_provider *provider = data;
 696         const char *name;
 697         bool change = false;
 698         int err;
 699
 700         DBG("conn %p", conn);
 701
 702         if (provider->immutable)
 703                 return __connman_error_not_supported(msg);
 704
 705         dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &name,
 706                                                         DBUS_TYPE_INVALID);
 707
 708         if (g_str_equal(name, "UserRoutes")) {
 709                 /*
 710                  * If either user_routes or user_networks has any entries
 711                  * there is a change that is to be written to settings file.
 712                  */
 713                 if (g_hash_table_size(provider->user_routes) ||
 714                                 provider->user_networks)
 715                         change = true;
 716
 717                 del_routes(provider);
 718
 719                 send_routes(provider, provider->user_routes, name);
 720         } else if (vpn_provider_get_string(provider, name)) {
 721                 err = vpn_provider_set_string(provider, name, NULL);
 722                 switch (err) {
 723                 case 0:
 724                         change = true;
 725                         /* fall through */
 726                 case -EALREADY:
 727                         break;
 728                 case -EINVAL:
 729                         return __connman_error_invalid_property(msg);
 730                 default:
 731                         return __connman_error_failed(msg, -err);
 732                 }
 733         } else {
 734                 return __connman_error_invalid_property(msg);
 735         }
 736
 737         if (change)
 738                 vpn_provider_save(provider);
 739
 740         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 741 }
 742
 743 static DBusMessage *do_connect(DBusConnection *conn, DBusMessage *msg,
 744                                                                 void *data)
 745 {
 746         struct vpn_provider *provider = data;
 747         int err;
 748
 749         DBG("conn %p provider %p", conn, provider);
 750
 751         err = __vpn_provider_connect(provider, msg);
 752         if (err < 0 && err != -EINPROGRESS)
 753                 return __connman_error_failed(msg, -err);
 754
 755         return NULL;
 756 }
 757
 758 static DBusMessage *do_connect2(DBusConnection *conn, DBusMessage *msg,
 759                                                                 void *data)
 760 {
 761         return do_connect(conn, msg, data);
 762 }
 763
 764 static DBusMessage *do_disconnect(DBusConnection *conn, DBusMessage *msg,
 765                                                                 void *data)
 766 {
 767         struct vpn_provider *provider = data;
 768         int err;
 769
 770         DBG("conn %p provider %p", conn, provider);
 771
 772         err = __vpn_provider_disconnect(provider);
 773         if (err < 0 && err != -EINPROGRESS)
 774                 return __connman_error_failed(msg, -err);
 775
 776         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 777 }
 778
 779 static const GDBusMethodTable connection_methods[] = {
 780         { GDBUS_METHOD("GetProperties",
 781                         NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
 782                         get_properties) },
 783         { GDBUS_METHOD("SetProperty",
 784                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
 785                         NULL, set_property) },
 786         { GDBUS_METHOD("ClearProperty",
 787                         GDBUS_ARGS({ "name", "s" }), NULL,
 788                         clear_property) },
 789         { GDBUS_ASYNC_METHOD("Connect", NULL, NULL, do_connect) },
 790         { GDBUS_ASYNC_METHOD("Connect2",
 791                         GDBUS_ARGS({ "dbus_sender", "s" }),
 792                         NULL, do_connect2) },
 793         { GDBUS_METHOD("Disconnect", NULL, NULL, do_disconnect) },
 794         { },
 795 };
 796
 797 static const GDBusSignalTable connection_signals[] = {
 798         { GDBUS_SIGNAL("PropertyChanged",
 799                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 800         { },
 801 };
 802
 803 static void resolv_result(GResolvResultStatus status,
 804                                         char **results, gpointer user_data)
 805 {
 806         struct vpn_provider *provider = user_data;
 807
 808         DBG("status %d", status);
 809
 810         if (status == G_RESOLV_RESULT_STATUS_SUCCESS && results &&
 811                                                 g_strv_length(results) > 0)
 812                 provider->host_ip = g_strdupv(results);
 813
 814         vpn_provider_unref(provider);
 815
 816         /* Remove the resolver here so that it will not be left
 817          * hanging around and cause double free in unregister_provider()
 818          */
 819         g_resolv_unref(provider->resolv);
 820         provider->resolv = NULL;
 821 }
 822
 823 static void provider_resolv_host_addr(struct vpn_provider *provider)
 824 {
 825         if (!provider->host)
 826                 return;
 827
 828         if (connman_inet_check_ipaddress(provider->host) > 0)
 829                 return;
 830
 831         if (provider->host_ip)
 832                 return;
 833
 834         /*
 835          * If the hostname is not numeric, try to resolv it. We do not wait
 836          * the result as it might take some time. We will get the result
 837          * before VPN will feed routes to us because VPN client will need
 838          * the IP address also before VPN connection can be established.
 839          */
 840         provider->resolv = g_resolv_new(0);
 841         if (!provider->resolv) {
 842                 DBG("Cannot resolv %s", provider->host);
 843                 return;
 844         }
 845
 846         DBG("Trying to resolv %s", provider->host);
 847
 848         vpn_provider_ref(provider);
 849
 850         g_resolv_lookup_hostname(provider->resolv, provider->host,
 851                                 resolv_result, provider);
 852 }
 853
 854 void __vpn_provider_append_properties(struct vpn_provider *provider,
 855                                                         DBusMessageIter *iter)
 856 {
 857         dbus_bool_t split_routing;
 858
 859         if (provider->host)
 860                 connman_dbus_dict_append_basic(iter, "Host",
 861                                         DBUS_TYPE_STRING, &provider->host);
 862
 863         if (provider->domain)
 864                 connman_dbus_dict_append_basic(iter, "Domain",
 865                                         DBUS_TYPE_STRING, &provider->domain);
 866
 867         if (provider->type)
 868                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
 869                                                  &provider->type);
 870
 871         split_routing = provider->do_split_routing;
 872         connman_dbus_dict_append_basic(iter, "SplitRouting", DBUS_TYPE_BOOLEAN,
 873                                                         &split_routing);
 874 }
 875
 876 int __vpn_provider_append_user_route(struct vpn_provider *provider,
 877                                 int family, const char *network,
 878                                 const char *netmask, const char *gateway)
 879 {
 880         struct vpn_route *route;
 881         char *key = g_strdup_printf("%d/%s/%s/%s", family, network,
 882                                 netmask, gateway ? gateway : "");
 883
 884         DBG("family %d network %s netmask %s gw %s", family, network,
 885                                                         netmask, gateway);
 886
 887         route = g_hash_table_lookup(provider->user_routes, key);
 888         if (!route) {
 889                 route = g_try_new0(struct vpn_route, 1);
 890                 if (!route) {
 891                         connman_error("out of memory");
 892                         return -ENOMEM;
 893                 }
 894
 895                 route->family = family;
 896                 route->network = g_strdup(network);
 897                 route->netmask = g_strdup(netmask);
 898                 route->gateway = g_strdup(gateway);
 899
 900                 g_hash_table_replace(provider->user_routes, key, route);
 901         } else
 902                 g_free(key);
 903
 904         return 0;
 905 }
 906
 907 static struct vpn_route *get_route(char *route_str)
 908 {
 909         char **elems = g_strsplit(route_str, "/", 0);
 910         char *network, *netmask, *gateway, *family_str;
 911         int family = PF_UNSPEC;
 912         struct vpn_route *route = NULL;
 913
 914         if (!elems)
 915                 return NULL;
 916
 917         family_str = elems[0];
 918
 919         network = elems[1];
 920         if (!network || network[0] == '\0')
 921                 goto out;
 922
 923         netmask = elems[2];
 924         if (!netmask || netmask[0] == '\0')
 925                 goto out;
 926
 927         gateway = elems[3];
 928
 929         route = g_try_new0(struct vpn_route, 1);
 930         if (!route)
 931                 goto out;
 932
 933         if (family_str[0] == '\0' || atoi(family_str) == 0) {
 934                 family = PF_UNSPEC;
 935         } else {
 936                 switch (family_str[0]) {
 937                 case '4':
 938                         family = AF_INET;
 939                         break;
 940                 case '6':
 941                         family = AF_INET6;
 942                         break;
 943                 }
 944         }
 945
 946         if (g_strrstr(network, ":")) {
 947                 if (family != PF_UNSPEC && family != AF_INET6)
 948                         DBG("You have IPv6 address but you have non IPv6 route");
 949         } else if (g_strrstr(network, ".")) {
 950                 if (family != PF_UNSPEC && family != AF_INET)
 951                         DBG("You have IPv4 address but you have non IPv4 route");
 952
 953                 if (!g_strrstr(netmask, ".")) {
 954                         /* We have netmask length */
 955                         in_addr_t addr;
 956                         struct in_addr netmask_in;
 957                         unsigned char prefix_len = 32;
 958                         char *ptr;
 959                         long int value = strtol(netmask, &ptr, 10);
 960
 961                         if (ptr != netmask && *ptr == '\0' && value <= 32)
 962                                 prefix_len = value;
 963
 964                         addr = 0xffffffff << (32 - prefix_len);
 965                         netmask_in.s_addr = htonl(addr);
 966                         netmask = inet_ntoa(netmask_in);
 967
 968                         DBG("network %s netmask %s", network, netmask);
 969                 }
 970         }
 971
 972         if (family == PF_UNSPEC) {
 973                 family = connman_inet_check_ipaddress(network);
 974                 if (family < 0 || family == PF_UNSPEC)
 975                         goto out;
 976         }
 977
 978         route->family = family;
 979         route->network = g_strdup(network);
 980         route->netmask = g_strdup(netmask);
 981         route->gateway = g_strdup(gateway);
 982
 983 out:
 984         g_strfreev(elems);
 985         return route;
 986 }
 987
 988 static GSList *get_routes(gchar **networks)
 989 {
 990         struct vpn_route *route;
 991         GSList *routes = NULL;
 992         int i;
 993
 994         for (i = 0; networks[i]; i++) {
 995                 route = get_route(networks[i]);
 996                 if (route)
 997                         routes = g_slist_prepend(routes, route);
 998         }
 999
1000         return routes;
1001 }
1002
1003 static int provider_load_from_keyfile(struct vpn_provider *provider,
1004                 GKeyFile *keyfile)
1005 {
1006         gsize idx;
1007         gchar **settings;
1008         gchar *key, *value;
1009         gsize length, num_user_networks;
1010         gchar **networks = NULL;
1011
1012         settings = g_key_file_get_keys(keyfile, provider->identifier, &length,
1013                                 NULL);
1014         if (!settings) {
1015                 g_key_file_free(keyfile);
1016                 return -ENOENT;
1017         }
1018
1019         for (idx = 0; idx < length; idx++) {
1020                 key = settings[idx];
1021                 if (!key)
1022                         continue;
1023
1024                 if (g_str_equal(key, "Networks")) {
1025                         networks = __vpn_config_get_string_list(keyfile,
1026                                                 provider->identifier,key,
1027                                                 &num_user_networks, NULL);
1028                         provider->user_networks = get_routes(networks);
1029                 } else {
1030                         value = __vpn_config_get_string(keyfile,
1031                                                 provider->identifier, key,
1032                                                 NULL);
1033
1034                         vpn_provider_set_string(provider, key, value);
1035                         g_free(value);
1036                 }
1037         }
1038
1039         g_strfreev(settings);
1040         g_strfreev(networks);
1041
1042         if (provider->user_networks)
1043                 set_user_networks(provider, provider->user_networks);
1044
1045         return 0;
1046 }
1047
1048
1049 static int vpn_provider_load(struct vpn_provider *provider)
1050 {
1051         GKeyFile *keyfile;
1052
1053         DBG("provider %p", provider);
1054
1055         keyfile = __connman_storage_load_provider(provider->identifier);
1056         if (!keyfile)
1057                 return -ENOENT;
1058
1059         provider_load_from_keyfile(provider, keyfile);
1060
1061         g_key_file_free(keyfile);
1062         return 0;
1063 }
1064
1065 static gchar **create_network_list(GSList *networks, gsize *count)
1066 {
1067         GSList *list;
1068         gchar **result = NULL;
1069         gchar **prev_result;
1070         unsigned int num_elems = 0;
1071
1072         for (list = networks; list; list = g_slist_next(list)) {
1073                 struct vpn_route *route = list->data;
1074                 int family;
1075
1076                 prev_result = result;
1077                 result = g_try_realloc(result,
1078                                 (num_elems + 1) * sizeof(gchar *));
1079                 if (!result) {
1080                         g_free(prev_result);
1081                         return NULL;
1082                 }
1083
1084                 switch (route->family) {
1085                 case AF_INET:
1086                         family = 4;
1087                         break;
1088                 case AF_INET6:
1089                         family = 6;
1090                         break;
1091                 default:
1092                         family = 0;
1093                         break;
1094                 }
1095
1096                 result[num_elems] = g_strdup_printf("%d/%s/%s/%s",
1097                                 family, route->network, route->netmask,
1098                                 !route->gateway ? "" : route->gateway);
1099
1100                 num_elems++;
1101         }
1102
1103         prev_result = result;
1104         result = g_try_realloc(result, (num_elems + 1) * sizeof(gchar *));
1105         if (!result) {
1106                 g_free(prev_result);
1107                 return NULL;
1108         }
1109
1110         result[num_elems] = NULL;
1111         *count = num_elems;
1112         return result;
1113 }
1114
1115 static void reset_error_counters(struct vpn_provider *provider)
1116 {
1117         if (!provider)
1118                 return;
1119
1120         provider->auth_error_counter = provider->conn_error_counter = 0;
1121 }
1122
1123 static int vpn_provider_save(struct vpn_provider *provider)
1124 {
1125         GKeyFile *keyfile;
1126
1127         DBG("provider %p immutable %s", provider,
1128                                         provider->immutable ? "yes" : "no");
1129
1130         reset_error_counters(provider);
1131
1132         if (provider->state == VPN_PROVIDER_STATE_FAILURE)
1133                 vpn_provider_set_state(provider, VPN_PROVIDER_STATE_IDLE);
1134
1135         if (provider->immutable) {
1136                 /*
1137                  * Do not save providers that are provisioned via .config
1138                  * file.
1139                  */
1140                 return -EPERM;
1141         }
1142
1143         keyfile = g_key_file_new();
1144         if (!keyfile)
1145                 return -ENOMEM;
1146
1147         g_key_file_set_string(keyfile, provider->identifier,
1148                         "Name", provider->name);
1149         g_key_file_set_string(keyfile, provider->identifier,
1150                         "Type", provider->type);
1151         g_key_file_set_string(keyfile, provider->identifier,
1152                         "Host", provider->host);
1153         g_key_file_set_string(keyfile, provider->identifier,
1154                         "VPN.Domain", provider->domain);
1155
1156         if (provider->user_networks) {
1157                 gchar **networks;
1158                 gsize network_count;
1159
1160                 networks = create_network_list(provider->user_networks,
1161                                                         &network_count);
1162                 if (networks) {
1163                         g_key_file_set_string_list(keyfile,
1164                                                 provider->identifier,
1165                                                 "Networks",
1166                                                 (const gchar ** const)networks,
1167                                                 network_count);
1168                         g_strfreev(networks);
1169                 }
1170         }
1171
1172         if (provider->config_file && strlen(provider->config_file) > 0)
1173                 g_key_file_set_string(keyfile, provider->identifier,
1174                                 "Config.file", provider->config_file);
1175
1176         if (provider->config_entry &&
1177                                         strlen(provider->config_entry) > 0)
1178                 g_key_file_set_string(keyfile, provider->identifier,
1179                                 "Config.ident", provider->config_entry);
1180
1181         if (provider->driver && provider->driver->save)
1182                 provider->driver->save(provider, keyfile);
1183
1184         __connman_storage_save_provider(keyfile, provider->identifier);
1185         g_key_file_free(keyfile);
1186
1187         return 0;
1188 }
1189
1190 struct vpn_provider *__vpn_provider_lookup(const char *identifier)
1191 {
1192         struct vpn_provider *provider = NULL;
1193
1194         provider = g_hash_table_lookup(provider_hash, identifier);
1195
1196         return provider;
1197 }
1198
1199 static bool match_driver(struct vpn_provider *provider,
1200                                 struct vpn_provider_driver *driver)
1201 {
1202         if (g_strcmp0(driver->name, provider->type) == 0)
1203                 return true;
1204
1205         return false;
1206 }
1207
1208 static int provider_probe(struct vpn_provider *provider)
1209 {
1210         GSList *list;
1211
1212         DBG("provider %p driver %p name %s", provider, provider->driver,
1213                                                 provider->name);
1214
1215         if (provider->driver)
1216                 return -EALREADY;
1217
1218         for (list = driver_list; list; list = list->next) {
1219                 struct vpn_provider_driver *driver = list->data;
1220
1221                 if (!match_driver(provider, driver))
1222                         continue;
1223
1224                 DBG("driver %p name %s", driver, driver->name);
1225
1226                 if (driver->probe && driver->probe(provider) == 0) {
1227                         provider->driver = driver;
1228                         break;
1229                 }
1230         }
1231
1232         if (!provider->driver)
1233                 return -ENODEV;
1234
1235         return 0;
1236 }
1237
1238 static void provider_remove(struct vpn_provider *provider)
1239 {
1240         if (provider->driver) {
1241                 provider->driver->remove(provider);
1242                 provider->driver = NULL;
1243         }
1244 }
1245
1246 static int provider_register(struct vpn_provider *provider)
1247 {
1248         return provider_probe(provider);
1249 }
1250
1251 static void provider_unregister(struct vpn_provider *provider)
1252 {
1253         provider_remove(provider);
1254 }
1255
1256 struct vpn_provider *
1257 vpn_provider_ref_debug(struct vpn_provider *provider,
1258                         const char *file, int line, const char *caller)
1259 {
1260         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount + 1,
1261                 file, line, caller);
1262
1263         __sync_fetch_and_add(&provider->refcount, 1);
1264
1265         return provider;
1266 }
1267
1268 static void provider_destruct(struct vpn_provider *provider)
1269 {
1270         DBG("provider %p", provider);
1271
1272         if (provider->notify_id != 0)
1273                 g_source_remove(provider->notify_id);
1274
1275         g_free(provider->name);
1276         g_free(provider->type);
1277         g_free(provider->host);
1278         g_free(provider->domain);
1279         g_free(provider->identifier);
1280         g_free(provider->path);
1281         g_slist_free_full(provider->user_networks, free_route);
1282         g_strfreev(provider->nameservers);
1283         g_hash_table_destroy(provider->routes);
1284         g_hash_table_destroy(provider->user_routes);
1285         g_hash_table_destroy(provider->setting_strings);
1286         if (provider->resolv) {
1287                 g_resolv_unref(provider->resolv);
1288                 provider->resolv = NULL;
1289         }
1290         __vpn_ipconfig_unref(provider->ipconfig_ipv4);
1291         __vpn_ipconfig_unref(provider->ipconfig_ipv6);
1292
1293         g_strfreev(provider->host_ip);
1294         g_free(provider->config_file);
1295         g_free(provider->config_entry);
1296         connman_ipaddress_free(provider->prev_ipv4_addr);
1297         connman_ipaddress_free(provider->prev_ipv6_addr);
1298         g_free(provider);
1299 }
1300
1301 void vpn_provider_unref_debug(struct vpn_provider *provider,
1302                                 const char *file, int line, const char *caller)
1303 {
1304         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount - 1,
1305                 file, line, caller);
1306
1307         if (__sync_fetch_and_sub(&provider->refcount, 1) != 1)
1308                 return;
1309
1310         provider_remove(provider);
1311
1312         provider_destruct(provider);
1313 }
1314
1315 static void configuration_count_add(void)
1316 {
1317         DBG("count %d", configuration_count + 1);
1318
1319         __sync_fetch_and_add(&configuration_count, 1);
1320 }
1321
1322 static void configuration_count_del(void)
1323 {
1324         DBG("count %d", configuration_count - 1);
1325
1326         if (__sync_fetch_and_sub(&configuration_count, 1) != 1)
1327                 return;
1328 }
1329
1330 int __vpn_provider_disconnect(struct vpn_provider *provider)
1331 {
1332         int err;
1333
1334         DBG("provider %p", provider);
1335
1336         if (provider->driver && provider->driver->disconnect)
1337                 err = provider->driver->disconnect(provider);
1338         else
1339                 return -EOPNOTSUPP;
1340
1341         if (err == -EINPROGRESS)
1342                 vpn_provider_set_state(provider, VPN_PROVIDER_STATE_CONNECT);
1343
1344         return err;
1345 }
1346
1347 static void connect_cb(struct vpn_provider *provider, void *user_data,
1348                                                                 int error)
1349 {
1350         DBusMessage *pending = user_data;
1351
1352         DBG("provider %p user %p error %d", provider, user_data, error);
1353
1354         if (error != 0) {
1355                 DBusMessage *reply = __connman_error_failed(pending, error);
1356                 if (reply)
1357                         g_dbus_send_message(connection, reply);
1358
1359                 switch (error) {
1360                 case EACCES:
1361                         vpn_provider_indicate_error(provider,
1362                                                 VPN_PROVIDER_ERROR_AUTH_FAILED);
1363                         break;
1364                 case ENOENT:
1365                         /*
1366                          * No reply, disconnect called by connmand because of
1367                          * connection timeout.
1368                          */
1369                         break;
1370                 case ENOMSG:
1371                         /* fall through */
1372                 case ETIMEDOUT:
1373                         /* No reply or timed out -> cancel the agent request */
1374                         connman_agent_cancel(provider);
1375                         vpn_provider_indicate_error(provider,
1376                                                 VPN_PROVIDER_ERROR_UNKNOWN);
1377                         break;
1378                 case ECANCELED:
1379                         /* fall through */
1380                 case ECONNABORTED:
1381                         /*
1382                          * This can be called in other situations than when
1383                          * VPN agent error checker is called. In such case
1384                          * react to both ECONNABORTED and ECANCELED as if the
1385                          * connection was called to terminate and do full
1386                          * disconnect -> idle cycle when being connected or
1387                          * ready. Setting the state also using the driver
1388                          * callback (vpn_set_state()) ensures that the driver is
1389                          * being disconnected as well and eventually the vpn
1390                          * process gets killed and vpn_died() is called to make
1391                          * the provider back to idle state.
1392                          */
1393                         if (provider->state == VPN_PROVIDER_STATE_CONNECT ||
1394                                                 provider->state ==
1395                                                 VPN_PROVIDER_STATE_READY) {
1396                                 if (provider->driver->set_state)
1397                                         provider->driver->set_state(provider,
1398                                                 VPN_PROVIDER_STATE_DISCONNECT);
1399
1400                                 vpn_provider_set_state(provider,
1401                                                 VPN_PROVIDER_STATE_DISCONNECT);
1402                         }
1403                         break;
1404                 default:
1405                         vpn_provider_indicate_error(provider,
1406                                         VPN_PROVIDER_ERROR_CONNECT_FAILED);
1407                         vpn_provider_set_state(provider,
1408                                         VPN_PROVIDER_STATE_FAILURE);
1409                 }
1410         } else {
1411                 reset_error_counters(provider);
1412                 g_dbus_send_reply(connection, pending, DBUS_TYPE_INVALID);
1413         }
1414
1415         dbus_message_unref(pending);
1416 }
1417
1418 int __vpn_provider_connect(struct vpn_provider *provider, DBusMessage *msg)
1419 {
1420         DBusMessage *reply;
1421         int err;
1422
1423         DBG("provider %p state %d", provider, provider->state);
1424
1425         switch (provider->state) {
1426         /*
1427          * When previous connection has failed change state to idle and let
1428          * the connmand to process this information as well. Return -EINPROGRESS
1429          * to indicate that transition is in progress and next connection
1430          * attempt will continue as normal.
1431          */
1432         case VPN_PROVIDER_STATE_FAILURE:
1433                 if (provider->driver && provider->driver->set_state)
1434                         provider->driver->set_state(provider,
1435                                                 VPN_PROVIDER_STATE_IDLE);
1436
1437                 vpn_provider_set_state(provider, VPN_PROVIDER_STATE_IDLE);
1438                 /* fall through */
1439         /*
1440          * If re-using a provider and it is being disconnected let it finish
1441          * the disconnect process in order to let vpn.c:vpn_died() to get
1442          * processed and everything cleaned up. Otherwise the reference
1443          * counters are not decreased properly causing the previous interface
1444          * being left up and its routes will remain in routing table. Return
1445          * -EINPROGRESS to indicate that transition is in progress.
1446          */
1447         case VPN_PROVIDER_STATE_DISCONNECT:
1448                 /*
1449                  * Failure transition or disconnecting does not yield a
1450                  * message to be sent. Send in progress message to avoid
1451                  * D-Bus LimitsExceeded error message.
1452                  */
1453                 reply = __connman_error_in_progress(msg);
1454                 if (reply)
1455                         g_dbus_send_message(connection, reply);
1456
1457                 return -EINPROGRESS;
1458         case VPN_PROVIDER_STATE_UNKNOWN:
1459         case VPN_PROVIDER_STATE_IDLE:
1460         case VPN_PROVIDER_STATE_CONNECT:
1461         case VPN_PROVIDER_STATE_READY:
1462                 break;
1463         }
1464
1465         if (provider->driver && provider->driver->connect) {
1466                 const char *dbus_sender = dbus_message_get_sender(msg);
1467
1468                 dbus_message_ref(msg);
1469
1470                 if (dbus_message_has_signature(msg,
1471                                                 DBUS_TYPE_STRING_AS_STRING)) {
1472                         const char *sender = NULL;
1473
1474                         dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING,
1475                                         &sender, DBUS_TYPE_INVALID);
1476                         if (sender && sender[0])
1477                                 dbus_sender = sender;
1478                 }
1479
1480                 err = provider->driver->connect(provider, connect_cb,
1481                                                 dbus_sender, msg);
1482         } else
1483                 return -EOPNOTSUPP;
1484
1485         if (err == -EINPROGRESS)
1486                 vpn_provider_set_state(provider, VPN_PROVIDER_STATE_CONNECT);
1487
1488         return err;
1489 }
1490
1491 static void connection_removed_signal(struct vpn_provider *provider)
1492 {
1493         DBusMessage *signal;
1494         DBusMessageIter iter;
1495
1496         signal = dbus_message_new_signal(VPN_MANAGER_PATH,
1497                         VPN_MANAGER_INTERFACE, "ConnectionRemoved");
1498         if (!signal)
1499                 return;
1500
1501         dbus_message_iter_init_append(signal, &iter);
1502         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
1503                                                         &provider->path);
1504         dbus_connection_send(connection, signal, NULL);
1505         dbus_message_unref(signal);
1506 }
1507
1508 static char *get_ident(const char *path)
1509 {
1510         char *pos;
1511
1512         if (*path != '/')
1513                 return NULL;
1514
1515         pos = strrchr(path, '/');
1516         if (!pos)
1517                 return NULL;
1518
1519         return pos + 1;
1520 }
1521
1522 int __vpn_provider_remove(const char *path)
1523 {
1524         struct vpn_provider *provider;
1525         char *ident;
1526
1527         DBG("path %s", path);
1528
1529         ident = get_ident(path);
1530
1531         provider = __vpn_provider_lookup(ident);
1532         if (provider)
1533                 return __vpn_provider_delete(provider);
1534
1535         return -ENXIO;
1536 }
1537
1538 int __vpn_provider_delete(struct vpn_provider *provider)
1539 {
1540         DBG("Deleting VPN %s", provider->identifier);
1541
1542         connection_removed_signal(provider);
1543
1544         provider_unregister(provider);
1545
1546         __connman_storage_remove_provider(provider->identifier);
1547
1548         g_hash_table_remove(provider_hash, provider->identifier);
1549
1550         return 0;
1551 }
1552
1553 static void append_ipv4(DBusMessageIter *iter, void *user_data)
1554 {
1555         struct vpn_provider *provider = user_data;
1556         const char *address, *gateway, *peer;
1557
1558         address = __vpn_ipconfig_get_local(provider->ipconfig_ipv4);
1559         if (address) {
1560                 in_addr_t addr;
1561                 struct in_addr netmask;
1562                 char *mask;
1563                 int prefixlen;
1564
1565                 prefixlen = __vpn_ipconfig_get_prefixlen(
1566                                                 provider->ipconfig_ipv4);
1567
1568                 addr = 0xffffffff << (32 - prefixlen);
1569                 netmask.s_addr = htonl(addr);
1570                 mask = inet_ntoa(netmask);
1571
1572                 connman_dbus_dict_append_basic(iter, "Address",
1573                                                 DBUS_TYPE_STRING, &address);
1574
1575                 connman_dbus_dict_append_basic(iter, "Netmask",
1576                                                 DBUS_TYPE_STRING, &mask);
1577         }
1578
1579         gateway = __vpn_ipconfig_get_gateway(provider->ipconfig_ipv4);
1580         if (gateway)
1581                 connman_dbus_dict_append_basic(iter, "Gateway",
1582                                                 DBUS_TYPE_STRING, &gateway);
1583
1584         peer = __vpn_ipconfig_get_peer(provider->ipconfig_ipv4);
1585         if (peer)
1586                 connman_dbus_dict_append_basic(iter, "Peer",
1587                                                 DBUS_TYPE_STRING, &peer);
1588 }
1589
1590 static void append_ipv6(DBusMessageIter *iter, void *user_data)
1591 {
1592         struct vpn_provider *provider = user_data;
1593         const char *address, *gateway, *peer;
1594
1595         address = __vpn_ipconfig_get_local(provider->ipconfig_ipv6);
1596         if (address) {
1597                 unsigned char prefixlen;
1598
1599                 connman_dbus_dict_append_basic(iter, "Address",
1600                                                 DBUS_TYPE_STRING, &address);
1601
1602                 prefixlen = __vpn_ipconfig_get_prefixlen(
1603                                                 provider->ipconfig_ipv6);
1604
1605                 connman_dbus_dict_append_basic(iter, "PrefixLength",
1606                                                 DBUS_TYPE_BYTE, &prefixlen);
1607         }
1608
1609         gateway = __vpn_ipconfig_get_gateway(provider->ipconfig_ipv6);
1610         if (gateway)
1611                 connman_dbus_dict_append_basic(iter, "Gateway",
1612                                                 DBUS_TYPE_STRING, &gateway);
1613
1614         peer = __vpn_ipconfig_get_peer(provider->ipconfig_ipv6);
1615         if (peer)
1616                 connman_dbus_dict_append_basic(iter, "Peer",
1617                                                 DBUS_TYPE_STRING, &peer);
1618 }
1619
1620 static const char *state2string(enum vpn_provider_state state)
1621 {
1622         switch (state) {
1623         case VPN_PROVIDER_STATE_UNKNOWN:
1624                 break;
1625         case VPN_PROVIDER_STATE_IDLE:
1626                 return "idle";
1627         case VPN_PROVIDER_STATE_CONNECT:
1628                 return "configuration";
1629         case VPN_PROVIDER_STATE_READY:
1630                 return "ready";
1631         case VPN_PROVIDER_STATE_DISCONNECT:
1632                 return "disconnect";
1633         case VPN_PROVIDER_STATE_FAILURE:
1634                 return "failure";
1635         }
1636
1637         return NULL;
1638 }
1639
1640 static void append_nameservers(DBusMessageIter *iter, char **servers)
1641 {
1642         int i;
1643
1644         DBG("%p", servers);
1645
1646         for (i = 0; servers[i]; i++) {
1647                 DBG("servers[%d] %s", i, servers[i]);
1648                 dbus_message_iter_append_basic(iter,
1649                                         DBUS_TYPE_STRING, &servers[i]);
1650         }
1651 }
1652
1653 static void append_dns(DBusMessageIter *iter, void *user_data)
1654 {
1655         struct vpn_provider *provider = user_data;
1656
1657         if (provider->nameservers)
1658                 append_nameservers(iter, provider->nameservers);
1659 }
1660
1661 static int provider_indicate_state(struct vpn_provider *provider,
1662                                 enum vpn_provider_state state)
1663 {
1664         const char *str;
1665         enum vpn_provider_state old_state;
1666
1667         str = state2string(state);
1668         DBG("provider %p state %s/%d", provider, str, state);
1669         if (!str)
1670                 return -EINVAL;
1671
1672         old_state = provider->state;
1673         provider->state = state;
1674
1675         if (state == VPN_PROVIDER_STATE_READY) {
1676                 connman_dbus_property_changed_basic(provider->path,
1677                                         VPN_CONNECTION_INTERFACE, "Index",
1678                                         DBUS_TYPE_INT32, &provider->index);
1679
1680                 if (provider->family == AF_INET)
1681                         connman_dbus_property_changed_dict(provider->path,
1682                                         VPN_CONNECTION_INTERFACE, "IPv4",
1683                                         append_ipv4, provider);
1684                 else if (provider->family == AF_INET6)
1685                         connman_dbus_property_changed_dict(provider->path,
1686                                         VPN_CONNECTION_INTERFACE, "IPv6",
1687                                         append_ipv6, provider);
1688
1689                 connman_dbus_property_changed_array(provider->path,
1690                                                 VPN_CONNECTION_INTERFACE,
1691                                                 "Nameservers",
1692                                                 DBUS_TYPE_STRING,
1693                                                 append_dns, provider);
1694
1695                 if (provider->domain)
1696                         connman_dbus_property_changed_basic(provider->path,
1697                                                 VPN_CONNECTION_INTERFACE,
1698                                                 "Domain",
1699                                                 DBUS_TYPE_STRING,
1700                                                 &provider->domain);
1701         }
1702
1703         if (old_state != state)
1704                 connman_dbus_property_changed_basic(provider->path,
1705                                         VPN_CONNECTION_INTERFACE, "State",
1706                                         DBUS_TYPE_STRING, &str);
1707
1708         return 0;
1709 }
1710
1711 static void append_state(DBusMessageIter *iter,
1712                                         struct vpn_provider *provider)
1713 {
1714         char *str;
1715
1716         switch (provider->state) {
1717         case VPN_PROVIDER_STATE_UNKNOWN:
1718         case VPN_PROVIDER_STATE_IDLE:
1719                 str = "idle";
1720                 break;
1721         case VPN_PROVIDER_STATE_CONNECT:
1722                 str = "configuration";
1723                 break;
1724         case VPN_PROVIDER_STATE_READY:
1725                 str = "ready";
1726                 break;
1727         case VPN_PROVIDER_STATE_DISCONNECT:
1728                 str = "disconnect";
1729                 break;
1730         case VPN_PROVIDER_STATE_FAILURE:
1731                 str = "failure";
1732                 break;
1733         }
1734
1735         connman_dbus_dict_append_basic(iter, "State",
1736                                 DBUS_TYPE_STRING, &str);
1737 }
1738
1739 static void append_properties(DBusMessageIter *iter,
1740                                         struct vpn_provider *provider)
1741 {
1742         DBusMessageIter dict;
1743         GHashTableIter hash;
1744         gpointer value, key;
1745         dbus_bool_t immutable;
1746         dbus_bool_t split_routing;
1747
1748         connman_dbus_dict_open(iter, &dict);
1749
1750         append_state(&dict, provider);
1751
1752         if (provider->type)
1753                 connman_dbus_dict_append_basic(&dict, "Type",
1754                                         DBUS_TYPE_STRING, &provider->type);
1755
1756         if (provider->name)
1757                 connman_dbus_dict_append_basic(&dict, "Name",
1758                                         DBUS_TYPE_STRING, &provider->name);
1759
1760         if (provider->host)
1761                 connman_dbus_dict_append_basic(&dict, "Host",
1762                                         DBUS_TYPE_STRING, &provider->host);
1763         if (provider->index >= 0)
1764                 connman_dbus_dict_append_basic(&dict, "Index",
1765                                         DBUS_TYPE_INT32, &provider->index);
1766         if (provider->domain)
1767                 connman_dbus_dict_append_basic(&dict, "Domain",
1768                                         DBUS_TYPE_STRING, &provider->domain);
1769
1770         immutable = provider->immutable;
1771         connman_dbus_dict_append_basic(&dict, "Immutable", DBUS_TYPE_BOOLEAN,
1772                                         &immutable);
1773
1774         split_routing = provider->do_split_routing;
1775         connman_dbus_dict_append_basic(&dict, "SplitRouting",
1776                                         DBUS_TYPE_BOOLEAN, &split_routing);
1777
1778         if (provider->family == AF_INET)
1779                 connman_dbus_dict_append_dict(&dict, "IPv4", append_ipv4,
1780                                                 provider);
1781         else if (provider->family == AF_INET6)
1782                 connman_dbus_dict_append_dict(&dict, "IPv6", append_ipv6,
1783                                                 provider);
1784
1785         connman_dbus_dict_append_array(&dict, "Nameservers",
1786                                 DBUS_TYPE_STRING, append_dns, provider);
1787
1788         connman_dbus_dict_append_array(&dict, "UserRoutes",
1789                                 DBUS_TYPE_DICT_ENTRY, append_routes,
1790                                 provider->user_routes);
1791
1792         connman_dbus_dict_append_array(&dict, "ServerRoutes",
1793                                 DBUS_TYPE_DICT_ENTRY, append_routes,
1794                                 provider->routes);
1795
1796         if (provider->setting_strings) {
1797                 g_hash_table_iter_init(&hash, provider->setting_strings);
1798
1799                 while (g_hash_table_iter_next(&hash, &key, &value)) {
1800                         struct vpn_setting *setting = value;
1801
1802                         if (!setting->hide_value && setting->value)
1803                                 connman_dbus_dict_append_basic(&dict, key,
1804                                                         DBUS_TYPE_STRING,
1805                                                         &setting->value);
1806                 }
1807         }
1808
1809         connman_dbus_dict_close(iter, &dict);
1810 }
1811
1812 static void connection_added_signal(struct vpn_provider *provider)
1813 {
1814         DBusMessage *signal;
1815         DBusMessageIter iter;
1816
1817         signal = dbus_message_new_signal(VPN_MANAGER_PATH,
1818                         VPN_MANAGER_INTERFACE, "ConnectionAdded");
1819         if (!signal)
1820                 return;
1821
1822         dbus_message_iter_init_append(signal, &iter);
1823         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
1824                                                         &provider->path);
1825         append_properties(&iter, provider);
1826
1827         dbus_connection_send(connection, signal, NULL);
1828         dbus_message_unref(signal);
1829 }
1830
1831 static int set_connected(struct vpn_provider *provider,
1832                                         bool connected)
1833 {
1834         struct vpn_ipconfig *ipconfig;
1835
1836         DBG("provider %p id %s connected %d", provider,
1837                                         provider->identifier, connected);
1838
1839         if (connected) {
1840                 if (provider->family == AF_INET6)
1841                         ipconfig = provider->ipconfig_ipv6;
1842                 else
1843                         ipconfig = provider->ipconfig_ipv4;
1844
1845                 __vpn_ipconfig_address_add(ipconfig, provider->family);
1846
1847                 provider_indicate_state(provider,
1848                                         VPN_PROVIDER_STATE_READY);
1849         } else {
1850                 provider_indicate_state(provider,
1851                                         VPN_PROVIDER_STATE_DISCONNECT);
1852
1853                 provider_indicate_state(provider,
1854                                         VPN_PROVIDER_STATE_IDLE);
1855         }
1856
1857         return 0;
1858 }
1859
1860 int vpn_provider_set_state(struct vpn_provider *provider,
1861                                         enum vpn_provider_state state)
1862 {
1863         if (!provider)
1864                 return -EINVAL;
1865
1866         switch (state) {
1867         case VPN_PROVIDER_STATE_UNKNOWN:
1868                 return -EINVAL;
1869         case VPN_PROVIDER_STATE_IDLE:
1870                 return set_connected(provider, false);
1871         case VPN_PROVIDER_STATE_CONNECT:
1872                 return provider_indicate_state(provider, state);
1873         case VPN_PROVIDER_STATE_READY:
1874                 return set_connected(provider, true);
1875         case VPN_PROVIDER_STATE_DISCONNECT:
1876                 return provider_indicate_state(provider, state);
1877         case VPN_PROVIDER_STATE_FAILURE:
1878                 return provider_indicate_state(provider, state);
1879         }
1880         return -EINVAL;
1881 }
1882
1883 void vpn_provider_add_error(struct vpn_provider *provider,
1884                         enum vpn_provider_error error)
1885 {
1886         switch (error) {
1887         case VPN_PROVIDER_ERROR_UNKNOWN:
1888                 break;
1889         case VPN_PROVIDER_ERROR_CONNECT_FAILED:
1890                 ++provider->conn_error_counter;
1891                 break;
1892         case VPN_PROVIDER_ERROR_LOGIN_FAILED:
1893         case VPN_PROVIDER_ERROR_AUTH_FAILED:
1894                 ++provider->auth_error_counter;
1895                 break;
1896         }
1897 }
1898
1899 int vpn_provider_indicate_error(struct vpn_provider *provider,
1900                                         enum vpn_provider_error error)
1901 {
1902         DBG("provider %p id %s error %d", provider, provider->identifier,
1903                                                                         error);
1904
1905         vpn_provider_set_state(provider, VPN_PROVIDER_STATE_FAILURE);
1906
1907         vpn_provider_add_error(provider, error);
1908
1909         if (provider->driver && provider->driver->set_state)
1910                 provider->driver->set_state(provider, provider->state);
1911
1912         return 0;
1913 }
1914
1915 static gboolean provider_property_changed(DBusConnection *conn,
1916                                         DBusMessage *message, void *user_data)
1917 {
1918         DBusMessageIter iter;
1919         DBusMessageIter value;
1920         struct vpn_provider *provider = user_data;
1921         const char *key;
1922
1923         if (!dbus_message_iter_init(message, &iter))
1924                 return TRUE;
1925
1926         dbus_message_iter_get_basic(&iter, &key);
1927
1928         dbus_message_iter_next(&iter);
1929         dbus_message_iter_recurse(&iter, &value);
1930
1931         DBG("provider %p key %s", provider, key);
1932
1933         if (g_str_equal(key, "SplitRouting")) {
1934                 dbus_bool_t split_routing;
1935
1936                 if (dbus_message_iter_get_arg_type(&value) !=
1937                                                         DBUS_TYPE_BOOLEAN)
1938                         goto out;
1939
1940                 dbus_message_iter_get_basic(&value, &split_routing);
1941
1942                 DBG("property %s value %s", key, bool2str(split_routing));
1943
1944                 /*
1945                  * Even though this is coming from connmand, signal the value
1946                  * for other components listening to the changes via VPN API
1947                  * only. provider.c will skip setting the same value in order
1948                  * to avoid signaling loop. This is needed for ensuring that
1949                  * all components using VPN API will be informed about the
1950                  * correct status of SplitRouting. Especially when loading the
1951                  * services after a crash, for instance.
1952                  */
1953                 vpn_provider_set_boolean(provider, "SplitRouting",
1954                                         split_routing, true);
1955         }
1956
1957 out:
1958         return TRUE;
1959 }
1960
1961 static int connection_unregister(struct vpn_provider *provider)
1962 {
1963         DBG("provider %p path %s", provider, provider->path);
1964
1965         if (provider->signal_watch) {
1966                 g_dbus_remove_watch(connection, provider->signal_watch);
1967                 provider->signal_watch = 0;
1968         }
1969
1970         if (!provider->path)
1971                 return -EALREADY;
1972
1973         g_dbus_unregister_interface(connection, provider->path,
1974                                 VPN_CONNECTION_INTERFACE);
1975
1976         g_free(provider->path);
1977         provider->path = NULL;
1978
1979         return 0;
1980 }
1981
1982 static int connection_register(struct vpn_provider *provider)
1983 {
1984         char *connmand_vpn_path;
1985
1986         DBG("provider %p path %s", provider, provider->path);
1987
1988         if (provider->path)
1989                 return -EALREADY;
1990
1991         provider->path = g_strdup_printf("%s/connection/%s", VPN_PATH,
1992                                                 provider->identifier);
1993
1994         g_dbus_register_interface(connection, provider->path,
1995                                 VPN_CONNECTION_INTERFACE,
1996                                 connection_methods, connection_signals,
1997                                 NULL, provider, NULL);
1998
1999         connmand_vpn_path = g_strdup_printf("%s/service/vpn_%s", CONNMAN_PATH,
2000                                                 provider->identifier);
2001
2002         provider->signal_watch = g_dbus_add_signal_watch(connection,
2003                                         CONNMAN_SERVICE, connmand_vpn_path,
2004                                         CONNMAN_SERVICE_INTERFACE,
2005                                         PROPERTY_CHANGED,
2006                                         provider_property_changed,
2007                                         provider, NULL);
2008
2009         g_free(connmand_vpn_path);
2010
2011         return 0;
2012 }
2013
2014 static void unregister_provider(gpointer data)
2015 {
2016         struct vpn_provider *provider = data;
2017
2018         configuration_count_del();
2019
2020         connection_unregister(provider);
2021
2022         /* If the provider has any DNS resolver queries pending,
2023          * they need to be cleared here because the unref will not
2024          * be able to do that (because the provider_resolv_host_addr()
2025          * has increased the ref count by 1). This is quite rare as
2026          * normally the resolving either returns a value or has a
2027          * timeout which clears the memory. Typically resolv_result() will
2028          * unref the provider but in this case that call has not yet
2029          * happened.
2030          */
2031         if (provider->resolv)
2032                 vpn_provider_unref(provider);
2033
2034         vpn_provider_unref(provider);
2035 }
2036
2037 static void provider_initialize(struct vpn_provider *provider)
2038 {
2039         DBG("provider %p", provider);
2040
2041         provider->index = 0;
2042         provider->fd = -1;
2043         provider->name = NULL;
2044         provider->type = NULL;
2045         provider->domain = NULL;
2046         provider->identifier = NULL;
2047         provider->immutable = false;
2048         provider->do_split_routing = false;
2049         provider->user_networks = NULL;
2050         provider->routes = g_hash_table_new_full(g_direct_hash, g_direct_equal,
2051                                         NULL, free_route);
2052         provider->user_routes = g_hash_table_new_full(g_str_hash, g_str_equal,
2053                                         g_free, free_route);
2054         provider->setting_strings = g_hash_table_new_full(g_str_hash,
2055                                         g_str_equal, g_free, free_setting);
2056 }
2057
2058 static struct vpn_provider *vpn_provider_new(void)
2059 {
2060         struct vpn_provider *provider;
2061
2062         provider = g_try_new0(struct vpn_provider, 1);
2063         if (!provider)
2064                 return NULL;
2065
2066         provider->refcount = 1;
2067
2068         DBG("provider %p", provider);
2069         provider_initialize(provider);
2070
2071         return provider;
2072 }
2073
2074 static struct vpn_provider *vpn_provider_get(const char *identifier)
2075 {
2076         struct vpn_provider *provider;
2077
2078         provider = g_hash_table_lookup(provider_hash, identifier);
2079         if (provider)
2080                 return provider;
2081
2082         provider = vpn_provider_new();
2083         if (!provider)
2084                 return NULL;
2085
2086         DBG("provider %p", provider);
2087
2088         provider->identifier = g_strdup(identifier);
2089
2090         g_hash_table_insert(provider_hash, provider->identifier, provider);
2091
2092         configuration_count_add();
2093
2094         return provider;
2095 }
2096
2097 static void vpn_provider_put(const char *identifier)
2098 {
2099         configuration_count_del();
2100
2101         g_hash_table_remove(provider_hash, identifier);
2102 }
2103
2104 static void provider_dbus_ident(char *ident)
2105 {
2106         int i, len = strlen(ident);
2107
2108         for (i = 0; i < len; i++) {
2109                 if (ident[i] >= '0' && ident[i] <= '9')
2110                         continue;
2111                 if (ident[i] >= 'a' && ident[i] <= 'z')
2112                         continue;
2113                 if (ident[i] >= 'A' && ident[i] <= 'Z')
2114                         continue;
2115                 ident[i] = '_';
2116         }
2117 }
2118
2119 static struct vpn_provider *provider_create_from_keyfile(GKeyFile *keyfile,
2120                 const char *ident)
2121 {
2122         struct vpn_provider *provider;
2123
2124         if (!keyfile || !ident)
2125                 return NULL;
2126
2127         provider = __vpn_provider_lookup(ident);
2128         if (!provider) {
2129                 provider = vpn_provider_get(ident);
2130                 if (!provider) {
2131                         DBG("can not create provider");
2132                         return NULL;
2133                 }
2134
2135                 provider_load_from_keyfile(provider, keyfile);
2136
2137                 if (!provider->name || !provider->host ||
2138                                 !provider->domain) {
2139                         DBG("cannot get name, host or domain");
2140                         vpn_provider_unref(provider);
2141                         return NULL;
2142                 }
2143
2144                 if (!provider_register(provider)) {
2145                         connection_register(provider);
2146                         connection_added_signal(provider);
2147                 }
2148         }
2149
2150         return provider;
2151 }
2152
2153 static void provider_create_all_from_type(const char *provider_type)
2154 {
2155         unsigned int i;
2156         char **providers;
2157         char *id, *type;
2158         GKeyFile *keyfile;
2159
2160         DBG("provider type %s", provider_type);
2161
2162         providers = __connman_storage_get_providers();
2163
2164         if (!providers)
2165                 return;
2166
2167         for (i = 0; providers[i]; i += 1) {
2168
2169                 if (strncmp(providers[i], "provider_", 9) != 0)
2170                         continue;
2171
2172                 id = providers[i] + 9;
2173                 keyfile = __connman_storage_load_provider(id);
2174
2175                 if (!keyfile)
2176                         continue;
2177
2178                 type = __vpn_config_get_string(keyfile, id, "Type", NULL);
2179
2180                 DBG("keyfile %p id %s type %s", keyfile, id, type);
2181
2182                 if (strcmp(provider_type, type) != 0) {
2183                         g_free(type);
2184                         g_key_file_free(keyfile);
2185                         continue;
2186                 }
2187
2188                 if (!provider_create_from_keyfile(keyfile, id))
2189                         DBG("could not create provider");
2190
2191                 g_free(type);
2192                 g_key_file_free(keyfile);
2193         }
2194         g_strfreev(providers);
2195 }
2196
2197 char *__vpn_provider_create_identifier(const char *host, const char *domain)
2198 {
2199         char *ident;
2200
2201         if (domain)
2202                 ident = g_strdup_printf("%s_%s", host, domain);
2203         else
2204                 ident = g_strdup_printf("%s", host);
2205
2206         provider_dbus_ident(ident);
2207
2208         return ident;
2209 }
2210
2211 int __vpn_provider_create(DBusMessage *msg)
2212 {
2213         struct vpn_provider *provider;
2214         DBusMessageIter iter, array;
2215         const char *type = NULL, *name = NULL;
2216         const char *host = NULL, *domain = NULL;
2217         GSList *networks = NULL;
2218         char *ident;
2219         int err;
2220         dbus_bool_t split_routing = false;
2221
2222         dbus_message_iter_init(msg, &iter);
2223         dbus_message_iter_recurse(&iter, &array);
2224
2225         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
2226                 DBusMessageIter entry, value;
2227                 const char *key;
2228
2229                 dbus_message_iter_recurse(&array, &entry);
2230                 dbus_message_iter_get_basic(&entry, &key);
2231
2232                 dbus_message_iter_next(&entry);
2233                 dbus_message_iter_recurse(&entry, &value);
2234
2235                 switch (dbus_message_iter_get_arg_type(&value)) {
2236                 case DBUS_TYPE_STRING:
2237                         if (g_str_equal(key, "Type"))
2238                                 dbus_message_iter_get_basic(&value, &type);
2239                         else if (g_str_equal(key, "Name"))
2240                                 dbus_message_iter_get_basic(&value, &name);
2241                         else if (g_str_equal(key, "Host"))
2242                                 dbus_message_iter_get_basic(&value, &host);
2243                         else if (g_str_equal(key, "VPN.Domain") ||
2244                                         g_str_equal(key, "Domain"))
2245                                 dbus_message_iter_get_basic(&value, &domain);
2246                         break;
2247                 case DBUS_TYPE_BOOLEAN:
2248                         if (g_str_equal(key, "SplitRouting"))
2249                                 dbus_message_iter_get_basic(&value,
2250                                                         &split_routing);
2251                         break;
2252                 case DBUS_TYPE_ARRAY:
2253                         if (g_str_equal(key, "UserRoutes"))
2254                                 networks = get_user_networks(&value);
2255                         break;
2256                 }
2257
2258                 dbus_message_iter_next(&array);
2259         }
2260
2261         if (!host)
2262                 return -EINVAL;
2263
2264         DBG("Type %s name %s networks %p", type, name, networks);
2265
2266         if (!type || !name)
2267                 return -EOPNOTSUPP;
2268
2269         ident = __vpn_provider_create_identifier(host, domain);
2270         DBG("ident %s", ident);
2271
2272         provider = __vpn_provider_lookup(ident);
2273         if (!provider) {
2274                 provider = vpn_provider_get(ident);
2275                 if (!provider) {
2276                         DBG("can not create provider");
2277                         g_free(ident);
2278                         return -EOPNOTSUPP;
2279                 }
2280
2281                 provider->host = g_strdup(host);
2282                 provider->domain = g_strdup(domain);
2283                 provider->name = g_strdup(name);
2284                 provider->type = g_strdup(type);
2285                 provider->do_split_routing = split_routing;
2286
2287                 if (provider_register(provider) == 0)
2288                         vpn_provider_load(provider);
2289
2290                 provider_resolv_host_addr(provider);
2291         }
2292
2293         if (networks) {
2294                 g_slist_free_full(provider->user_networks, free_route);
2295                 provider->user_networks = networks;
2296                 set_user_networks(provider, provider->user_networks);
2297         }
2298
2299         dbus_message_iter_init(msg, &iter);
2300         dbus_message_iter_recurse(&iter, &array);
2301
2302         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
2303                 DBusMessageIter entry, value;
2304                 const char *key, *str;
2305
2306                 dbus_message_iter_recurse(&array, &entry);
2307                 dbus_message_iter_get_basic(&entry, &key);
2308
2309                 dbus_message_iter_next(&entry);
2310                 dbus_message_iter_recurse(&entry, &value);
2311
2312                 switch (dbus_message_iter_get_arg_type(&value)) {
2313                 case DBUS_TYPE_STRING:
2314                         dbus_message_iter_get_basic(&value, &str);
2315                         vpn_provider_set_string(provider, key, str);
2316                         break;
2317                 }
2318
2319                 dbus_message_iter_next(&array);
2320         }
2321
2322         g_free(ident);
2323
2324         vpn_provider_save(provider);
2325
2326         err = provider_register(provider);
2327         if (err != 0 && err != -EALREADY)
2328                 return err;
2329
2330         connection_register(provider);
2331
2332         DBG("provider %p index %d path %s", provider, provider->index,
2333                                                         provider->path);
2334
2335         g_dbus_send_reply(connection, msg,
2336                                 DBUS_TYPE_OBJECT_PATH, &provider->path,
2337                                 DBUS_TYPE_INVALID);
2338
2339         connection_added_signal(provider);
2340
2341         return 0;
2342 }
2343
2344 static const char *get_string(GHashTable *settings, const char *key)
2345 {
2346         DBG("settings %p key %s", settings, key);
2347
2348         return g_hash_table_lookup(settings, key);
2349 }
2350
2351 static GSList *parse_user_networks(const char *network_str)
2352 {
2353         GSList *networks = NULL;
2354         char **elems;
2355         int i = 0;
2356
2357         if (!network_str)
2358                 return NULL;
2359
2360         elems = g_strsplit(network_str, ",", 0);
2361         if (!elems)
2362                 return NULL;
2363
2364         while (elems[i]) {
2365                 struct vpn_route *vpn_route;
2366                 char *network, *netmask, *gateway;
2367                 int family;
2368                 char **route;
2369
2370                 route = g_strsplit(elems[i], "/", 0);
2371                 if (!route)
2372                         goto next;
2373
2374                 network = route[0];
2375                 if (!network || network[0] == '\0')
2376                         goto next;
2377
2378                 family = connman_inet_check_ipaddress(network);
2379                 if (family < 0) {
2380                         DBG("Cannot get address family of %s (%d/%s)", network,
2381                                 family, gai_strerror(family));
2382
2383                         goto next;
2384                 }
2385
2386                 switch (family) {
2387                 case AF_INET:
2388                         break;
2389                 case AF_INET6:
2390                         break;
2391                 default:
2392                         DBG("Unsupported address family %d", family);
2393                         goto next;
2394                 }
2395
2396                 netmask = route[1];
2397                 if (!netmask || netmask[0] == '\0')
2398                         goto next;
2399
2400                 gateway = route[2];
2401
2402                 vpn_route = g_try_new0(struct vpn_route, 1);
2403                 if (!vpn_route) {
2404                         g_strfreev(route);
2405                         break;
2406                 }
2407
2408                 vpn_route->family = family;
2409                 vpn_route->network = g_strdup(network);
2410                 vpn_route->netmask = g_strdup(netmask);
2411                 vpn_route->gateway = g_strdup(gateway);
2412
2413                 DBG("route %s/%s%s%s", network, netmask,
2414                         gateway ? " via " : "", gateway ? gateway : "");
2415
2416                 networks = g_slist_prepend(networks, vpn_route);
2417
2418         next:
2419                 g_strfreev(route);
2420                 i++;
2421         }
2422
2423         g_strfreev(elems);
2424
2425         return g_slist_reverse(networks);
2426 }
2427
2428 int __vpn_provider_create_from_config(GHashTable *settings,
2429                                 const char *config_ident,
2430                                 const char *config_entry)
2431 {
2432         struct vpn_provider *provider;
2433         const char *type, *name, *host, *domain, *networks_str;
2434         GSList *networks;
2435         char *ident = NULL;
2436         GHashTableIter hash;
2437         gpointer value, key;
2438         int err;
2439
2440         type = get_string(settings, "Type");
2441         name = get_string(settings, "Name");
2442         host = get_string(settings, "Host");
2443         domain = get_string(settings, "Domain");
2444         networks_str = get_string(settings, "Networks");
2445         networks = parse_user_networks(networks_str);
2446
2447         if (!host) {
2448                 err = -EINVAL;
2449                 goto fail;
2450         }
2451
2452         DBG("type %s name %s networks %s", type, name, networks_str);
2453
2454         if (!type || !name) {
2455                 err = -EOPNOTSUPP;
2456                 goto fail;
2457         }
2458
2459         ident = __vpn_provider_create_identifier(host, domain);
2460         DBG("ident %s", ident);
2461
2462         provider = __vpn_provider_lookup(ident);
2463         if (!provider) {
2464                 provider = vpn_provider_get(ident);
2465                 if (!provider) {
2466                         DBG("can not create provider");
2467                         err = -EOPNOTSUPP;
2468                         goto fail;
2469                 }
2470
2471                 provider->host = g_strdup(host);
2472                 provider->domain = g_strdup(domain);
2473                 provider->name = g_strdup(name);
2474                 provider->type = g_ascii_strdown(type, -1);
2475
2476                 provider->config_file = g_strdup(config_ident);
2477                 provider->config_entry = g_strdup(config_entry);
2478
2479                 provider_resolv_host_addr(provider);
2480         }
2481
2482         if (networks) {
2483                 g_slist_free_full(provider->user_networks, free_route);
2484                 provider->user_networks = networks;
2485                 set_user_networks(provider, provider->user_networks);
2486         }
2487
2488         g_hash_table_iter_init(&hash, settings);
2489
2490         while (g_hash_table_iter_next(&hash, &key, &value))
2491                 __vpn_provider_set_string_immutable(provider, key, value);
2492
2493         provider->immutable = true;
2494
2495         vpn_provider_save(provider);
2496
2497         err = provider_register(provider);
2498         if (err != 0 && err != -EALREADY)
2499                 goto fail;
2500
2501         connection_register(provider);
2502
2503         DBG("provider %p index %d path %s", provider, provider->index,
2504                                                         provider->path);
2505
2506         connection_added_signal(provider);
2507
2508         g_free(ident);
2509
2510         return 0;
2511
2512 fail:
2513         vpn_provider_put(ident);
2514         g_free(ident);
2515         g_slist_free_full(networks, free_route);
2516
2517         return err;
2518 }
2519
2520 static void append_connection_structs(DBusMessageIter *iter, void *user_data)
2521 {
2522         DBusMessageIter entry;
2523         GHashTableIter hash;
2524         gpointer value, key;
2525
2526         g_hash_table_iter_init(&hash, provider_hash);
2527
2528         while (g_hash_table_iter_next(&hash, &key, &value)) {
2529                 struct vpn_provider *provider = value;
2530
2531                 DBG("path %s", provider->path);
2532
2533                 if (!provider->identifier)
2534                         continue;
2535
2536                 dbus_message_iter_open_container(iter, DBUS_TYPE_STRUCT,
2537                                 NULL, &entry);
2538                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
2539                                 &provider->path);
2540                 append_properties(&entry, provider);
2541                 dbus_message_iter_close_container(iter, &entry);
2542         }
2543 }
2544
2545 DBusMessage *__vpn_provider_get_connections(DBusMessage *msg)
2546 {
2547         DBusMessage *reply;
2548
2549         DBG("");
2550
2551         reply = dbus_message_new_method_return(msg);
2552         if (!reply)
2553                 return NULL;
2554
2555         __connman_dbus_append_objpath_dict_array(reply,
2556                         append_connection_structs, NULL);
2557
2558         return reply;
2559 }
2560
2561 const char *vpn_provider_get_ident(struct vpn_provider *provider)
2562 {
2563         if (!provider)
2564                 return NULL;
2565
2566         return provider->identifier;
2567 }
2568
2569 static int set_string(struct vpn_provider *provider,
2570                         const char *key, const char *value,
2571                         bool hide_value, bool immutable)
2572 {
2573         DBG("provider %p key %s immutable %s value %s", provider, key,
2574                 immutable ? "yes" : "no",
2575                 hide_value ? "<not printed>" : value);
2576
2577         if (g_str_equal(key, "Type")) {
2578                 if (!g_strcmp0(provider->type, value))
2579                         return -EALREADY;
2580
2581                 g_free(provider->type);
2582                 provider->type = g_ascii_strdown(value, -1);
2583                 send_value(provider->path, "Type", provider->type);
2584         } else if (g_str_equal(key, "Name")) {
2585                 if (!g_strcmp0(provider->name, value))
2586                         return -EALREADY;
2587
2588                 g_free(provider->name);
2589                 provider->name = g_strdup(value);
2590                 send_value(provider->path, "Name", provider->name);
2591         } else if (g_str_equal(key, "Host")) {
2592                 if (!g_strcmp0(provider->host, value))
2593                         return -EALREADY;
2594
2595                 g_free(provider->host);
2596                 provider->host = g_strdup(value);
2597                 send_value(provider->path, "Host", provider->host);
2598         } else if (g_str_equal(key, "VPN.Domain") ||
2599                         g_str_equal(key, "Domain")) {
2600                 if (!g_strcmp0(provider->domain, value))
2601                         return -EALREADY;
2602
2603                 g_free(provider->domain);
2604                 provider->domain = g_strdup(value);
2605                 send_value(provider->path, "Domain", provider->domain);
2606         } else if (g_str_equal(key, "SplitRouting")) {
2607                 connman_warn("VPN SplitRouting value attempted to set as "
2608                                         "string, is boolean");
2609                 return -EINVAL;
2610         } else {
2611                 struct vpn_setting *setting;
2612                 bool replace = true;
2613
2614                 setting = g_hash_table_lookup(provider->setting_strings, key);
2615                 if (setting) {
2616                         if (!immutable && setting->immutable) {
2617                                 DBG("Trying to set immutable variable %s", key);
2618                                 return -EPERM;
2619                         } else if (!g_strcmp0(setting->value, value)) {
2620                                 return -EALREADY;
2621                         }
2622
2623                         g_free(setting->value);
2624                         replace = false;
2625                 } else {
2626                         setting = g_try_new0(struct vpn_setting, 1);
2627                         if (!setting)
2628                                 return -ENOMEM;
2629                 }
2630
2631                 setting->value = g_strdup(value);
2632                 setting->hide_value = hide_value;
2633
2634                 if (immutable)
2635                         setting->immutable = true;
2636
2637                 if (!hide_value)
2638                         send_value(provider->path, key, setting->value);
2639
2640                 if (replace)
2641                         g_hash_table_replace(provider->setting_strings,
2642                                                 g_strdup(key), setting);
2643         }
2644
2645         return 0;
2646 }
2647
2648 int vpn_provider_set_string(struct vpn_provider *provider,
2649                                         const char *key, const char *value)
2650 {
2651         return set_string(provider, key, value, false, false);
2652 }
2653
2654 int vpn_provider_set_string_hide_value(struct vpn_provider *provider,
2655                                         const char *key, const char *value)
2656 {
2657         return set_string(provider, key, value, true, false);
2658 }
2659
2660 int __vpn_provider_set_string_immutable(struct vpn_provider *provider,
2661                                         const char *key, const char *value)
2662 {
2663         return set_string(provider, key, value, false, true);
2664 }
2665
2666 const char *vpn_provider_get_string(struct vpn_provider *provider,
2667                                                         const char *key)
2668 {
2669         struct vpn_setting *setting;
2670
2671         DBG("provider %p key %s", provider, key);
2672
2673         if (g_str_equal(key, "Type"))
2674                 return provider->type;
2675         else if (g_str_equal(key, "Name"))
2676                 return provider->name;
2677         else if (g_str_equal(key, "Host"))
2678                 return provider->host;
2679         else if (g_str_equal(key, "HostIP")) {
2680                 if (!provider->host_ip ||
2681                                 !provider->host_ip[0])
2682                         return provider->host;
2683                 else
2684                         return provider->host_ip[0];
2685         } else if (g_str_equal(key, "VPN.Domain") ||
2686                         g_str_equal(key, "Domain"))
2687                 return provider->domain;
2688
2689         setting = g_hash_table_lookup(provider->setting_strings, key);
2690         if (!setting)
2691                 return NULL;
2692
2693         return setting->value;
2694 }
2695
2696 int vpn_provider_set_boolean(struct vpn_provider *provider, const char *key,
2697                                                 bool value, bool force_change)
2698 {
2699         DBG("provider %p key %s", provider, key);
2700
2701         if (g_str_equal(key, "SplitRouting")) {
2702                 if (provider->do_split_routing == value && !force_change)
2703                         return -EALREADY;
2704
2705                 DBG("SplitRouting set to %s", bool2str(value));
2706
2707                 provider->do_split_routing = value;
2708                 send_value_boolean(provider->path, key,
2709                                         provider->do_split_routing);
2710         }
2711
2712         return 0;
2713 }
2714
2715 bool vpn_provider_get_boolean(struct vpn_provider *provider, const char *key,
2716                                                         bool default_value)
2717 {
2718         struct vpn_setting *setting;
2719
2720         connman_info("provider %p key %s", provider, key);
2721
2722         setting = g_hash_table_lookup(provider->setting_strings, key);
2723         if (!setting || !setting->value)
2724                 return default_value;
2725
2726         if (!g_strcmp0(setting->value, "true"))
2727                 return true;
2728
2729         if (!g_strcmp0(setting->value, "false"))
2730                 return false;
2731
2732         return default_value;
2733 }
2734
2735 bool vpn_provider_get_string_immutable(struct vpn_provider *provider,
2736                                                         const char *key)
2737 {
2738         struct vpn_setting *setting;
2739
2740         /* These values can be changed if the provider is not immutable */
2741         if (g_str_equal(key, "Type")) {
2742                 return provider->immutable;
2743         } else if (g_str_equal(key, "Name")) {
2744                 return provider->immutable;
2745         } else if (g_str_equal(key, "Host")) {
2746                 return provider->immutable;
2747         } else if (g_str_equal(key, "HostIP")) {
2748                 return provider->immutable;
2749         } else if (g_str_equal(key, "VPN.Domain") ||
2750                         g_str_equal(key, "Domain")) {
2751                 return provider->immutable;
2752         }
2753
2754         setting = g_hash_table_lookup(provider->setting_strings, key);
2755         if (!setting)
2756                 return true; /* Not found, regard as immutable - no changes */
2757
2758         return setting->immutable;
2759 }
2760
2761 bool __vpn_provider_check_routes(struct vpn_provider *provider)
2762 {
2763         if (!provider)
2764                 return false;
2765
2766         if (provider->user_routes &&
2767                         g_hash_table_size(provider->user_routes) > 0)
2768                 return true;
2769
2770         if (provider->routes &&
2771                         g_hash_table_size(provider->routes) > 0)
2772                 return true;
2773
2774         return false;
2775 }
2776
2777 void *vpn_provider_get_data(struct vpn_provider *provider)
2778 {
2779         return provider->driver_data;
2780 }
2781
2782 void vpn_provider_set_data(struct vpn_provider *provider, void *data)
2783 {
2784         provider->driver_data = data;
2785 }
2786
2787 void *vpn_provider_get_plugin_data(struct vpn_provider *provider)
2788 {
2789         return provider->plugin_data;
2790 }
2791
2792 void vpn_provider_set_plugin_data(struct vpn_provider *provider, void *data)
2793 {
2794         provider->plugin_data = data;
2795 }
2796
2797 void vpn_provider_set_index(struct vpn_provider *provider, int index)
2798 {
2799         DBG("index %d provider %p", index, provider);
2800
2801         if (!provider->ipconfig_ipv4) {
2802                 provider->ipconfig_ipv4 = __vpn_ipconfig_create(index,
2803                                                                 AF_INET);
2804                 if (!provider->ipconfig_ipv4) {
2805                         DBG("Couldn't create ipconfig for IPv4");
2806                         goto done;
2807                 }
2808         }
2809
2810         __vpn_ipconfig_set_index(provider->ipconfig_ipv4, index);
2811
2812         if (!provider->ipconfig_ipv6) {
2813                 provider->ipconfig_ipv6 = __vpn_ipconfig_create(index,
2814                                                                 AF_INET6);
2815                 if (!provider->ipconfig_ipv6) {
2816                         DBG("Couldn't create ipconfig for IPv6");
2817                         goto done;
2818                 }
2819         }
2820
2821         __vpn_ipconfig_set_index(provider->ipconfig_ipv6, index);
2822
2823 done:
2824         provider->index = index;
2825 }
2826
2827 int vpn_provider_get_index(struct vpn_provider *provider)
2828 {
2829         return provider->index;
2830 }
2831
2832 int vpn_provider_set_ipaddress(struct vpn_provider *provider,
2833                                         struct connman_ipaddress *ipaddress)
2834 {
2835         struct vpn_ipconfig *ipconfig = NULL;
2836
2837         switch (ipaddress->family) {
2838         case AF_INET:
2839                 ipconfig = provider->ipconfig_ipv4;
2840                 break;
2841         case AF_INET6:
2842                 ipconfig = provider->ipconfig_ipv6;
2843                 break;
2844         default:
2845                 break;
2846         }
2847
2848         DBG("provider %p state %d ipconfig %p family %d", provider,
2849                 provider->state, ipconfig, ipaddress->family);
2850
2851         if (!ipconfig)
2852                 return -EINVAL;
2853
2854         provider->family = ipaddress->family;
2855
2856         if (provider->state == VPN_PROVIDER_STATE_CONNECT ||
2857                         provider->state == VPN_PROVIDER_STATE_READY) {
2858                 struct connman_ipaddress *addr =
2859                                         __vpn_ipconfig_get_address(ipconfig);
2860
2861                 /*
2862                  * Remember the old address so that we can remove it in notify
2863                  * function in plugins/vpn.c if we ever restart
2864                  */
2865                 if (ipaddress->family == AF_INET6) {
2866                         connman_ipaddress_free(provider->prev_ipv6_addr);
2867                         provider->prev_ipv6_addr =
2868                                                 connman_ipaddress_copy(addr);
2869                 } else {
2870                         connman_ipaddress_free(provider->prev_ipv4_addr);
2871                         provider->prev_ipv4_addr =
2872                                                 connman_ipaddress_copy(addr);
2873                 }
2874         }
2875
2876         if (ipaddress->local) {
2877                 __vpn_ipconfig_set_local(ipconfig, ipaddress->local);
2878                 __vpn_ipconfig_set_peer(ipconfig, ipaddress->peer);
2879                 __vpn_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
2880                 __vpn_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
2881                 __vpn_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
2882         }
2883
2884         return 0;
2885 }
2886
2887 int vpn_provider_set_pac(struct vpn_provider *provider,
2888                                 const char *pac)
2889 {
2890         DBG("provider %p pac %s", provider, pac);
2891
2892         return 0;
2893 }
2894
2895
2896 int vpn_provider_set_domain(struct vpn_provider *provider,
2897                                         const char *domain)
2898 {
2899         DBG("provider %p domain %s", provider, domain);
2900
2901         g_free(provider->domain);
2902         provider->domain = g_strdup(domain);
2903
2904         return 0;
2905 }
2906
2907 int vpn_provider_set_nameservers(struct vpn_provider *provider,
2908                                         const char *nameservers)
2909 {
2910         DBG("provider %p nameservers %s", provider, nameservers);
2911
2912         g_strfreev(provider->nameservers);
2913         provider->nameservers = NULL;
2914
2915         if (!nameservers)
2916                 return 0;
2917
2918         provider->nameservers = g_strsplit_set(nameservers, ", ", 0);
2919
2920         return 0;
2921 }
2922
2923 static int route_env_parse(struct vpn_provider *provider, const char *key,
2924                                 int *family, unsigned long *idx,
2925                                 enum vpn_provider_route_type *type)
2926 {
2927         if (!provider)
2928                 return -EINVAL;
2929
2930         DBG("name %s", provider->name);
2931
2932         if (provider->driver && provider->driver->route_env_parse)
2933                 return provider->driver->route_env_parse(provider, key, family, idx,
2934                                 type);
2935
2936         return 0;
2937 }
2938
2939 int vpn_provider_append_route(struct vpn_provider *provider,
2940                                         const char *key, const char *value)
2941 {
2942         struct vpn_route *route;
2943         int ret, family = 0;
2944         unsigned long idx = 0;
2945         enum vpn_provider_route_type type = VPN_PROVIDER_ROUTE_TYPE_NONE;
2946
2947         DBG("key %s value %s", key, value);
2948
2949         ret = route_env_parse(provider, key, &family, &idx, &type);
2950         if (ret < 0)
2951                 return ret;
2952
2953         DBG("idx %lu family %d type %d", idx, family, type);
2954
2955         route = g_hash_table_lookup(provider->routes, GINT_TO_POINTER(idx));
2956         if (!route) {
2957                 route = g_try_new0(struct vpn_route, 1);
2958                 if (!route) {
2959                         connman_error("out of memory");
2960                         return -ENOMEM;
2961                 }
2962
2963                 route->family = family;
2964
2965                 g_hash_table_replace(provider->routes, GINT_TO_POINTER(idx),
2966                                                 route);
2967         }
2968
2969         switch (type) {
2970         case VPN_PROVIDER_ROUTE_TYPE_NONE:
2971                 break;
2972         case VPN_PROVIDER_ROUTE_TYPE_MASK:
2973                 route->netmask = g_strdup(value);
2974                 break;
2975         case VPN_PROVIDER_ROUTE_TYPE_ADDR:
2976                 route->network = g_strdup(value);
2977                 break;
2978         case VPN_PROVIDER_ROUTE_TYPE_GW:
2979                 route->gateway = g_strdup(value);
2980                 break;
2981         }
2982
2983         if (route->netmask && route->gateway && route->network)
2984                 provider_schedule_changed(provider);
2985
2986         return 0;
2987 }
2988
2989 const char *vpn_provider_get_driver_name(struct vpn_provider *provider)
2990 {
2991         if (!provider->driver)
2992                 return NULL;
2993
2994         return provider->driver->name;
2995 }
2996
2997 const char *vpn_provider_get_save_group(struct vpn_provider *provider)
2998 {
2999         return provider->identifier;
3000 }
3001
3002 static gint compare_priority(gconstpointer a, gconstpointer b)
3003 {
3004         return 0;
3005 }
3006
3007 static void clean_provider(gpointer key, gpointer value, gpointer user_data)
3008 {
3009         struct vpn_provider *provider = value;
3010
3011         if (provider->driver && provider->driver->remove)
3012                 provider->driver->remove(provider);
3013
3014         connection_unregister(provider);
3015 }
3016
3017 int vpn_provider_driver_register(struct vpn_provider_driver *driver)
3018 {
3019         DBG("driver %p name %s", driver, driver->name);
3020
3021         driver_list = g_slist_insert_sorted(driver_list, driver,
3022                                                         compare_priority);
3023         provider_create_all_from_type(driver->name);
3024         return 0;
3025 }
3026
3027 void vpn_provider_driver_unregister(struct vpn_provider_driver *driver)
3028 {
3029         GHashTableIter iter;
3030         gpointer value, key;
3031
3032         DBG("driver %p name %s", driver, driver->name);
3033
3034         driver_list = g_slist_remove(driver_list, driver);
3035
3036         g_hash_table_iter_init(&iter, provider_hash);
3037         while (g_hash_table_iter_next(&iter, &key, &value)) {
3038                 struct vpn_provider *provider = value;
3039
3040                 if (provider && provider->driver &&
3041                                 g_strcmp0(provider->driver->name,
3042                                                         driver->name) == 0) {
3043                         /*
3044                          * Cancel VPN agent request to avoid segfault at
3045                          * shutdown as the callback, if set can point to a
3046                          * function in the plugin that is to be removed.
3047                          */
3048                         connman_agent_cancel(provider);
3049                         provider->driver = NULL;
3050                 }
3051         }
3052 }
3053
3054 const char *vpn_provider_get_name(struct vpn_provider *provider)
3055 {
3056         return provider->name;
3057 }
3058
3059 const char *vpn_provider_get_host(struct vpn_provider *provider)
3060 {
3061         return provider->host;
3062 }
3063
3064 const char *vpn_provider_get_path(struct vpn_provider *provider)
3065 {
3066         return provider->path;
3067 }
3068
3069 unsigned int vpn_provider_get_authentication_errors(
3070                                                 struct vpn_provider *provider)
3071 {
3072         return provider->auth_error_counter;
3073 }
3074
3075 unsigned int vpn_provider_get_connection_errors(
3076                                                 struct vpn_provider *provider)
3077 {
3078         return provider->conn_error_counter;
3079 }
3080
3081 void vpn_provider_change_address(struct vpn_provider *provider)
3082 {
3083         switch (provider->family) {
3084         case AF_INET:
3085                 connman_inet_set_address(provider->index,
3086                         __vpn_ipconfig_get_address(provider->ipconfig_ipv4));
3087                 break;
3088         case AF_INET6:
3089                 connman_inet_set_ipv6_address(provider->index,
3090                         __vpn_ipconfig_get_address(provider->ipconfig_ipv6));
3091                 break;
3092         default:
3093                 break;
3094         }
3095 }
3096
3097 void vpn_provider_clear_address(struct vpn_provider *provider, int family)
3098 {
3099         const char *address;
3100         unsigned char len;
3101
3102         DBG("provider %p family %d ipv4 %p ipv6 %p", provider, family,
3103                 provider->prev_ipv4_addr, provider->prev_ipv6_addr);
3104
3105         switch (family) {
3106         case AF_INET:
3107                 if (provider->prev_ipv4_addr) {
3108                         connman_ipaddress_get_ip(provider->prev_ipv4_addr,
3109                                                 &address, &len);
3110
3111                         DBG("ipv4 %s/%d", address, len);
3112
3113                         connman_inet_clear_address(provider->index,
3114                                         provider->prev_ipv4_addr);
3115                         connman_ipaddress_free(provider->prev_ipv4_addr);
3116                         provider->prev_ipv4_addr = NULL;
3117                 }
3118                 break;
3119         case AF_INET6:
3120                 if (provider->prev_ipv6_addr) {
3121                         connman_ipaddress_get_ip(provider->prev_ipv6_addr,
3122                                                 &address, &len);
3123
3124                         DBG("ipv6 %s/%d", address, len);
3125
3126                         connman_inet_clear_ipv6_address(provider->index,
3127                                                 provider->prev_ipv6_addr);
3128
3129                         connman_ipaddress_free(provider->prev_ipv6_addr);
3130                         provider->prev_ipv6_addr = NULL;
3131                 }
3132                 break;
3133         default:
3134                 break;
3135         }
3136 }
3137
3138 static int agent_probe(struct connman_agent *agent)
3139 {
3140         DBG("agent %p", agent);
3141         return 0;
3142 }
3143
3144 static void agent_remove(struct connman_agent *agent)
3145 {
3146         DBG("agent %p", agent);
3147 }
3148
3149 static struct connman_agent_driver agent_driver = {
3150         .name           = "vpn",
3151         .interface      = VPN_AGENT_INTERFACE,
3152         .probe          = agent_probe,
3153         .remove         = agent_remove,
3154 };
3155
3156 static void remove_unprovisioned_providers(void)
3157 {
3158         gchar **providers;
3159         GKeyFile *keyfile, *configkeyfile;
3160         char *file, *section;
3161         int i = 0;
3162
3163         providers = __connman_storage_get_providers();
3164         if (!providers)
3165                 return;
3166
3167         for (; providers[i]; i++) {
3168                 char *group = providers[i] + sizeof("provider_") - 1;
3169                 file = section = NULL;
3170                 keyfile = configkeyfile = NULL;
3171
3172                 keyfile = __connman_storage_load_provider(group);
3173                 if (!keyfile)
3174                         continue;
3175
3176                 file = __vpn_config_get_string(keyfile, group,
3177                                         "Config.file", NULL);
3178                 if (!file)
3179                         goto next;
3180
3181                 section = __vpn_config_get_string(keyfile, group,
3182                                         "Config.ident", NULL);
3183                 if (!section)
3184                         goto next;
3185
3186                 configkeyfile = __connman_storage_load_provider_config(file);
3187                 if (!configkeyfile) {
3188                         /*
3189                          * Config file is missing, remove the provisioned
3190                          * service.
3191                          */
3192                         __connman_storage_remove_provider(group);
3193                         goto next;
3194                 }
3195
3196                 if (!g_key_file_has_group(configkeyfile, section))
3197                         /*
3198                          * Config section is missing, remove the provisioned
3199                          * service.
3200                          */
3201                         __connman_storage_remove_provider(group);
3202
3203         next:
3204                 if (keyfile)
3205                         g_key_file_free(keyfile);
3206
3207                 if (configkeyfile)
3208                         g_key_file_free(configkeyfile);
3209
3210                 g_free(section);
3211                 g_free(file);
3212         }
3213
3214         g_strfreev(providers);
3215 }
3216
3217 int __vpn_provider_init(void)
3218 {
3219         int err;
3220
3221         DBG("");
3222
3223         err = connman_agent_driver_register(&agent_driver);
3224         if (err < 0) {
3225                 connman_error("Cannot register agent driver for %s",
3226                                                 agent_driver.name);
3227                 return err;
3228         }
3229
3230         connection = connman_dbus_get_connection();
3231
3232         remove_unprovisioned_providers();
3233
3234         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
3235                                                 NULL, unregister_provider);
3236         return 0;
3237 }
3238
3239 void __vpn_provider_cleanup(void)
3240 {
3241         DBG("");
3242
3243         connman_agent_driver_unregister(&agent_driver);
3244
3245         g_hash_table_foreach(provider_hash, clean_provider, NULL);
3246
3247         g_hash_table_destroy(provider_hash);
3248         provider_hash = NULL;
3249
3250         dbus_connection_unref(connection);
3251 }