vpn/vpn-provider.c

   1 /*
   2  *
   3  *  ConnMan VPN daemon
   4  *
   5  *  Copyright (C) 2012  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <gdbus.h>
  31 #include <connman/log.h>
  32 #include <gweb/gresolv.h>
  33 #include <netdb.h>
  34
  35 #include "../src/connman.h"
  36 #include "connman/vpn-dbus.h"
  37 #include "vpn-provider.h"
  38 #include "vpn.h"
  39
  40 enum {
  41         USER_ROUTES_CHANGED = 0x01,
  42         SERVER_ROUTES_CHANGED = 0x02,
  43 };
  44
  45 static DBusConnection *connection;
  46 static GHashTable *provider_hash;
  47 static GSList *driver_list;
  48 static int configuration_count;
  49 static gboolean handle_routes;
  50
  51 struct vpn_route {
  52         int family;
  53         char *network;
  54         char *netmask;
  55         char *gateway;
  56 };
  57
  58 struct vpn_provider {
  59         int refcount;
  60         int index;
  61         int fd;
  62         enum vpn_provider_state state;
  63         char *path;
  64         char *identifier;
  65         char *name;
  66         char *type;
  67         char *host;
  68         char *domain;
  69         int family;
  70         GHashTable *routes;
  71         struct vpn_provider_driver *driver;
  72         void *driver_data;
  73         GHashTable *setting_strings;
  74         GHashTable *user_routes;
  75         GSList *user_networks;
  76         GResolv *resolv;
  77         char **host_ip;
  78         struct vpn_ipconfig *ipconfig_ipv4;
  79         struct vpn_ipconfig *ipconfig_ipv6;
  80         char **nameservers;
  81         int what_changed;
  82         guint notify_id;
  83 };
  84
  85 static void free_route(gpointer data)
  86 {
  87         struct vpn_route *route = data;
  88
  89         g_free(route->network);
  90         g_free(route->netmask);
  91         g_free(route->gateway);
  92
  93         g_free(route);
  94 }
  95
  96 static void append_route(DBusMessageIter *iter, void *user_data)
  97 {
  98         struct vpn_route *route = user_data;
  99         DBusMessageIter item;
 100         int family = 0;
 101
 102         connman_dbus_dict_open(iter, &item);
 103
 104         if (route == NULL)
 105                 goto empty_dict;
 106
 107         if (route->family == AF_INET)
 108                 family = 4;
 109         else if (route->family == AF_INET6)
 110                 family = 6;
 111
 112         if (family != 0)
 113                 connman_dbus_dict_append_basic(&item, "ProtocolFamily",
 114                                         DBUS_TYPE_INT32, &family);
 115
 116         if (route->network != NULL)
 117                 connman_dbus_dict_append_basic(&item, "Network",
 118                                         DBUS_TYPE_STRING, &route->network);
 119
 120         if (route->netmask != NULL)
 121                 connman_dbus_dict_append_basic(&item, "Netmask",
 122                                         DBUS_TYPE_STRING, &route->netmask);
 123
 124         if (route->gateway != NULL)
 125                 connman_dbus_dict_append_basic(&item, "Gateway",
 126                                         DBUS_TYPE_STRING, &route->gateway);
 127
 128 empty_dict:
 129         connman_dbus_dict_close(iter, &item);
 130 }
 131
 132 static void append_routes(DBusMessageIter *iter, void *user_data)
 133 {
 134         GHashTable *routes = user_data;
 135         GHashTableIter hash;
 136         gpointer value, key;
 137
 138         if (routes == NULL) {
 139                 append_route(iter, NULL);
 140                 return;
 141         }
 142
 143         g_hash_table_iter_init(&hash, routes);
 144
 145         while (g_hash_table_iter_next(&hash, &key, &value) == TRUE) {
 146                 DBusMessageIter dict;
 147
 148                 dbus_message_iter_open_container(iter, DBUS_TYPE_STRUCT, NULL,
 149                                                 &dict);
 150                 append_route(&dict, value);
 151                 dbus_message_iter_close_container(iter, &dict);
 152         }
 153 }
 154
 155 static void send_routes(struct vpn_provider *provider, GHashTable *routes,
 156                         const char *name)
 157 {
 158         connman_dbus_property_changed_array(provider->path,
 159                                         VPN_CONNECTION_INTERFACE,
 160                                         name,
 161                                         DBUS_TYPE_DICT_ENTRY,
 162                                         append_routes,
 163                                         routes);
 164 }
 165
 166 static int provider_property_changed(struct vpn_provider *provider,
 167                                 const char *name)
 168 {
 169         DBG("provider %p name %s", provider, name);
 170
 171         if (g_str_equal(name, "UserRoutes") == TRUE)
 172                 send_routes(provider, provider->user_routes, name);
 173         else if (g_str_equal(name, "ServerRoutes") == TRUE)
 174                 send_routes(provider, provider->routes, name);
 175
 176         return 0;
 177 }
 178
 179 static GSList *read_route_dict(GSList *routes, DBusMessageIter *dicts)
 180 {
 181         DBusMessageIter dict, value, entry;
 182         const char *network, *netmask, *gateway;
 183         struct vpn_route *route;
 184         int family, type;
 185         const char *key;
 186
 187         dbus_message_iter_recurse(dicts, &entry);
 188
 189         network = netmask = gateway = NULL;
 190         family = PF_UNSPEC;
 191
 192         while (dbus_message_iter_get_arg_type(&entry) == DBUS_TYPE_DICT_ENTRY) {
 193
 194                 dbus_message_iter_recurse(&entry, &dict);
 195                 dbus_message_iter_get_basic(&dict, &key);
 196
 197                 dbus_message_iter_next(&dict);
 198                 dbus_message_iter_recurse(&dict, &value);
 199
 200                 type = dbus_message_iter_get_arg_type(&value);
 201
 202                 switch (type) {
 203                 case DBUS_TYPE_STRING:
 204                         if (g_str_equal(key, "ProtocolFamily") == TRUE)
 205                                 dbus_message_iter_get_basic(&value, &family);
 206                         else if (g_str_equal(key, "Network") == TRUE)
 207                                 dbus_message_iter_get_basic(&value, &network);
 208                         else if (g_str_equal(key, "Netmask") == TRUE)
 209                                 dbus_message_iter_get_basic(&value, &netmask);
 210                         else if (g_str_equal(key, "Gateway") == TRUE)
 211                                 dbus_message_iter_get_basic(&value, &gateway);
 212                         break;
 213                 }
 214
 215                 dbus_message_iter_next(&entry);
 216         }
 217
 218         DBG("family %d network %s netmask %s gateway %s", family,
 219                 network, netmask, gateway);
 220
 221         if (network == NULL || netmask == NULL) {
 222                 DBG("Ignoring route as network/netmask is missing");
 223                 return routes;
 224         }
 225
 226         route = g_try_new(struct vpn_route, 1);
 227         if (route == NULL) {
 228                 g_slist_free_full(routes, free_route);
 229                 return NULL;
 230         }
 231
 232         if (family == PF_UNSPEC) {
 233                 family = connman_inet_check_ipaddress(network);
 234                 if (family < 0) {
 235                         DBG("Cannot get address family of %s (%d/%s)", network,
 236                                 family, gai_strerror(family));
 237                         if (strstr(network, ":") != NULL) {
 238                                 DBG("Guessing it is IPv6");
 239                                 family = AF_INET6;
 240                         } else {
 241                                 DBG("Guessing it is IPv4");
 242                                 family = AF_INET;
 243                         }
 244                 }
 245         } else {
 246                 switch (family) {
 247                 case '4':
 248                         family = AF_INET;
 249                         break;
 250                 case '6':
 251                         family = AF_INET6;
 252                         break;
 253                 default:
 254                         family = PF_UNSPEC;
 255                         break;
 256                 }
 257         }
 258
 259         route->family = family;
 260         route->network = g_strdup(network);
 261         route->netmask = g_strdup(netmask);
 262         route->gateway = g_strdup(gateway);
 263
 264         routes = g_slist_prepend(routes, route);
 265         return routes;
 266 }
 267
 268 static GSList *get_user_networks(DBusMessageIter *array)
 269 {
 270         DBusMessageIter entry;
 271         GSList *list = NULL;
 272
 273         while (dbus_message_iter_get_arg_type(array) == DBUS_TYPE_ARRAY) {
 274
 275                 dbus_message_iter_recurse(array, &entry);
 276
 277                 while (dbus_message_iter_get_arg_type(&entry) ==
 278                                                         DBUS_TYPE_STRUCT) {
 279                         DBusMessageIter dicts;
 280
 281                         dbus_message_iter_recurse(&entry, &dicts);
 282
 283                         while (dbus_message_iter_get_arg_type(&dicts) ==
 284                                                         DBUS_TYPE_ARRAY) {
 285
 286                                 list = read_route_dict(list, &dicts);
 287                                 dbus_message_iter_next(&dicts);
 288                         }
 289
 290                         dbus_message_iter_next(&entry);
 291                 }
 292
 293                 dbus_message_iter_next(array);
 294         }
 295
 296         return list;
 297 }
 298
 299 static void set_user_networks(struct vpn_provider *provider, GSList *networks)
 300 {
 301         GSList *list;
 302
 303         for (list = networks; list != NULL; list = g_slist_next(list)) {
 304                 struct vpn_route *route= list->data;
 305
 306                 if (__vpn_provider_append_user_route(provider,
 307                                         route->family, route->network,
 308                                         route->netmask) != 0)
 309                         break;
 310         }
 311 }
 312
 313 static void del_routes(struct vpn_provider *provider)
 314 {
 315         GHashTableIter hash;
 316         gpointer value, key;
 317
 318         g_hash_table_iter_init(&hash, provider->user_routes);
 319         while (handle_routes == TRUE && g_hash_table_iter_next(&hash,
 320                                                 &key, &value) == TRUE) {
 321                 struct vpn_route *route = value;
 322                 if (route->family == AF_INET6) {
 323                         unsigned char prefixlen = atoi(route->netmask);
 324                         connman_inet_del_ipv6_network_route(provider->index,
 325                                                         route->network,
 326                                                         prefixlen);
 327                 } else
 328                         connman_inet_del_host_route(provider->index,
 329                                                 route->network);
 330         }
 331
 332         g_hash_table_remove_all(provider->user_routes);
 333         g_slist_free_full(provider->user_networks, free_route);
 334         provider->user_networks = NULL;
 335 }
 336
 337 static gboolean provider_send_changed(gpointer data)
 338 {
 339         struct vpn_provider *provider = data;
 340
 341         if (provider->what_changed & USER_ROUTES_CHANGED)
 342                 provider_property_changed(provider, "UserRoutes");
 343
 344         if (provider->what_changed & SERVER_ROUTES_CHANGED)
 345                 provider_property_changed(provider, "ServerRoutes");
 346
 347         provider->what_changed = 0;
 348         provider->notify_id = 0;
 349
 350         return FALSE;
 351 }
 352
 353 static void provider_schedule_changed(struct vpn_provider *provider, int flag)
 354 {
 355         if (provider->notify_id != 0)
 356                 g_source_remove(provider->notify_id);
 357
 358         provider->what_changed |= flag;
 359
 360         provider->notify_id = g_timeout_add(100, provider_send_changed,
 361                                                                 provider);
 362 }
 363
 364 static DBusMessage *set_property(DBusConnection *conn, DBusMessage *msg,
 365                                                                 void *data)
 366 {
 367         struct vpn_provider *provider = data;
 368         DBusMessageIter iter, value;
 369         const char *name;
 370         int type;
 371
 372         DBG("conn %p", conn);
 373
 374         if (dbus_message_iter_init(msg, &iter) == FALSE)
 375                 return __connman_error_invalid_arguments(msg);
 376
 377         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
 378                 return __connman_error_invalid_arguments(msg);
 379
 380         dbus_message_iter_get_basic(&iter, &name);
 381         dbus_message_iter_next(&iter);
 382
 383         if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
 384                 return __connman_error_invalid_arguments(msg);
 385
 386         dbus_message_iter_recurse(&iter, &value);
 387
 388         type = dbus_message_iter_get_arg_type(&value);
 389
 390         if (g_str_equal(name, "UserRoutes") == TRUE) {
 391                 GSList *networks;
 392
 393                 if (type != DBUS_TYPE_ARRAY)
 394                         return __connman_error_invalid_arguments(msg);
 395
 396                 networks = get_user_networks(&value);
 397                 if (networks != NULL) {
 398                         del_routes(provider);
 399                         provider->user_networks = networks;
 400                         set_user_networks(provider, provider->user_networks);
 401
 402                         if (handle_routes == FALSE)
 403                                 provider_schedule_changed(provider,
 404                                                         USER_ROUTES_CHANGED);
 405                 }
 406         } else
 407                 return __connman_error_invalid_property(msg);
 408
 409         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 410 }
 411
 412 static DBusMessage *clear_property(DBusConnection *conn, DBusMessage *msg,
 413                                                                 void *data)
 414 {
 415         struct vpn_provider *provider = data;
 416         const char *name;
 417
 418         DBG("conn %p", conn);
 419
 420         dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &name,
 421                                                         DBUS_TYPE_INVALID);
 422
 423         if (g_str_equal(name, "UserRoutes") == TRUE) {
 424                 del_routes(provider);
 425
 426                 if (handle_routes == FALSE)
 427                         provider_property_changed(provider, name);
 428         } else {
 429                 return __connman_error_invalid_property(msg);
 430         }
 431
 432         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 433 }
 434
 435 static DBusMessage *do_connect(DBusConnection *conn, DBusMessage *msg,
 436                                                                 void *data)
 437 {
 438         struct vpn_provider *provider = data;
 439         int err;
 440
 441         DBG("conn %p provider %p", conn, provider);
 442
 443         err = __vpn_provider_connect(provider);
 444         if (err < 0)
 445                 return __connman_error_failed(msg, -err);
 446
 447         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 448 }
 449
 450 static DBusMessage *do_disconnect(DBusConnection *conn, DBusMessage *msg,
 451                                                                 void *data)
 452 {
 453         struct vpn_provider *provider = data;
 454         int err;
 455
 456         DBG("conn %p provider %p", conn, provider);
 457
 458         err = __vpn_provider_disconnect(provider);
 459         if (err < 0)
 460                 return __connman_error_failed(msg, -err);
 461         else
 462                 return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 463 }
 464
 465 static const GDBusMethodTable connection_methods[] = {
 466         { GDBUS_METHOD("SetProperty",
 467                         GDBUS_ARGS({ "name", "s" }, { "value", "v" }),
 468                         NULL, set_property) },
 469         { GDBUS_METHOD("ClearProperty",
 470                         GDBUS_ARGS({ "name", "s" }), NULL,
 471                         clear_property) },
 472         { GDBUS_ASYNC_METHOD("Connect", NULL, NULL, do_connect) },
 473         { GDBUS_METHOD("Disconnect", NULL, NULL, do_disconnect) },
 474         { },
 475 };
 476
 477 static const GDBusSignalTable connection_signals[] = {
 478         { GDBUS_SIGNAL("PropertyChanged",
 479                         GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
 480         { },
 481 };
 482
 483 static void resolv_result(GResolvResultStatus status,
 484                                         char **results, gpointer user_data)
 485 {
 486         struct vpn_provider *provider = user_data;
 487
 488         DBG("status %d", status);
 489
 490         if (status == G_RESOLV_RESULT_STATUS_SUCCESS && results != NULL &&
 491                                                 g_strv_length(results) > 0)
 492                 provider->host_ip = g_strdupv(results);
 493
 494         vpn_provider_unref(provider);
 495 }
 496
 497 static void provider_resolv_host_addr(struct vpn_provider *provider)
 498 {
 499         if (provider->host == NULL)
 500                 return;
 501
 502         if (connman_inet_check_ipaddress(provider->host) > 0)
 503                 return;
 504
 505         if (provider->host_ip != NULL)
 506                 return;
 507
 508         /*
 509          * If the hostname is not numeric, try to resolv it. We do not wait
 510          * the result as it might take some time. We will get the result
 511          * before VPN will feed routes to us because VPN client will need
 512          * the IP address also before VPN connection can be established.
 513          */
 514         provider->resolv = g_resolv_new(0);
 515         if (provider->resolv == NULL) {
 516                 DBG("Cannot resolv %s", provider->host);
 517                 return;
 518         }
 519
 520         DBG("Trying to resolv %s", provider->host);
 521
 522         vpn_provider_ref(provider);
 523
 524         g_resolv_lookup_hostname(provider->resolv, provider->host,
 525                                 resolv_result, provider);
 526 }
 527
 528 void __vpn_provider_append_properties(struct vpn_provider *provider,
 529                                                         DBusMessageIter *iter)
 530 {
 531         if (provider->host != NULL)
 532                 connman_dbus_dict_append_basic(iter, "Host",
 533                                         DBUS_TYPE_STRING, &provider->host);
 534
 535         if (provider->domain != NULL)
 536                 connman_dbus_dict_append_basic(iter, "Domain",
 537                                         DBUS_TYPE_STRING, &provider->domain);
 538
 539         if (provider->type != NULL)
 540                 connman_dbus_dict_append_basic(iter, "Type", DBUS_TYPE_STRING,
 541                                                  &provider->type);
 542 }
 543
 544 int __vpn_provider_append_user_route(struct vpn_provider *provider,
 545                         int family, const char *network, const char *netmask)
 546 {
 547         struct vpn_route *route;
 548         char *key = g_strdup_printf("%d/%s/%s", family, network, netmask);
 549
 550         DBG("family %d network %s netmask %s", family, network, netmask);
 551
 552         route = g_hash_table_lookup(provider->user_routes, key);
 553         if (route == NULL) {
 554                 route = g_try_new0(struct vpn_route, 1);
 555                 if (route == NULL) {
 556                         connman_error("out of memory");
 557                         return -ENOMEM;
 558                 }
 559
 560                 route->family = family;
 561                 route->network = g_strdup(network);
 562                 route->netmask = g_strdup(netmask);
 563
 564                 g_hash_table_replace(provider->user_routes, key, route);
 565         } else
 566                 g_free(key);
 567
 568         return 0;
 569 }
 570
 571 static struct vpn_route *get_route(char *route_str)
 572 {
 573         char **elems = g_strsplit(route_str, "/", 0);
 574         char *network, *netmask, *gateway, *family_str;
 575         int family = PF_UNSPEC;
 576         struct vpn_route *route = NULL;
 577
 578         if (elems == NULL)
 579                 return NULL;
 580
 581         family_str = elems[0];
 582
 583         network = elems[1];
 584         if (network == NULL || network[0] == '\0')
 585                 goto out;
 586
 587         netmask = elems[2];
 588         if (netmask == NULL || netmask[0] == '\0')
 589                 goto out;
 590
 591         gateway = elems[3];
 592
 593         route = g_try_new0(struct vpn_route, 1);
 594         if (route == NULL)
 595                 goto out;
 596
 597         if (family_str[0] == '\0' || atoi(family_str) == 0) {
 598                 family = PF_UNSPEC;
 599         } else {
 600                 switch (family_str[0]) {
 601                 case '4':
 602                         family = AF_INET;
 603                         break;
 604                 case '6':
 605                         family = AF_INET6;
 606                         break;
 607                 }
 608         }
 609
 610         if (g_strrstr(network, ":") != NULL) {
 611                 if (family != PF_UNSPEC && family != AF_INET6)
 612                         DBG("You have IPv6 address but you have non IPv6 route");
 613         } else if (g_strrstr(network, ".") != NULL) {
 614                 if (family != PF_UNSPEC && family != AF_INET)
 615                         DBG("You have IPv4 address but you have non IPv4 route");
 616
 617                 if (g_strrstr(netmask, ".") == NULL) {
 618                         /* We have netmask length */
 619                         in_addr_t addr;
 620                         struct in_addr netmask_in;
 621                         unsigned char prefix_len = 32;
 622
 623                         if (netmask != NULL) {
 624                                 char *ptr;
 625                                 long int value = strtol(netmask, &ptr, 10);
 626                                 if (ptr != netmask && *ptr == '\0' &&
 627                                                                 value <= 32)
 628                                         prefix_len = value;
 629                         }
 630
 631                         addr = 0xffffffff << (32 - prefix_len);
 632                         netmask_in.s_addr = htonl(addr);
 633                         netmask = inet_ntoa(netmask_in);
 634
 635                         DBG("network %s netmask %s", network, netmask);
 636                 }
 637         }
 638
 639         if (family == PF_UNSPEC) {
 640                 family = connman_inet_check_ipaddress(network);
 641                 if (family < 0 || family == PF_UNSPEC)
 642                         goto out;
 643         }
 644
 645         route->family = family;
 646         route->network = g_strdup(network);
 647         route->netmask = g_strdup(netmask);
 648         route->gateway = g_strdup(gateway);
 649
 650 out:
 651         g_strfreev(elems);
 652         return route;
 653 }
 654
 655 static GSList *get_routes(gchar **networks)
 656 {
 657         struct vpn_route *route;
 658         GSList *routes = NULL;
 659         int i;
 660
 661         for (i = 0; networks[i] != NULL; i++) {
 662                 route = get_route(networks[i]);
 663                 if (route != NULL)
 664                         routes = g_slist_prepend(routes, route);
 665         }
 666
 667         return routes;
 668 }
 669
 670 static int provider_load_from_keyfile(struct vpn_provider *provider,
 671                 GKeyFile *keyfile)
 672 {
 673         gsize idx = 0;
 674         gchar **settings;
 675         gchar *key, *value;
 676         gsize length, num_user_networks;
 677         gchar **networks = NULL;
 678
 679         settings = g_key_file_get_keys(keyfile, provider->identifier, &length,
 680                                 NULL);
 681         if (settings == NULL) {
 682                 g_key_file_free(keyfile);
 683                 return -ENOENT;
 684         }
 685
 686         while (idx < length) {
 687                 key = settings[idx];
 688                 if (key != NULL) {
 689                         if (g_str_equal(key, "Networks") == TRUE) {
 690                                 networks = g_key_file_get_string_list(keyfile,
 691                                                 provider->identifier,
 692                                                 key,
 693                                                 &num_user_networks,
 694                                                 NULL);
 695                                 provider->user_networks = get_routes(networks);
 696
 697                         } else {
 698                                 value = g_key_file_get_string(keyfile,
 699                                                         provider->identifier,
 700                                                         key, NULL);
 701                                 vpn_provider_set_string(provider, key,
 702                                                         value);
 703                                 g_free(value);
 704                         }
 705                 }
 706                 idx += 1;
 707         }
 708         g_strfreev(settings);
 709         g_strfreev(networks);
 710
 711         if (provider->user_networks != NULL)
 712                 set_user_networks(provider, provider->user_networks);
 713
 714         return 0;
 715 }
 716
 717
 718 static int vpn_provider_load(struct vpn_provider *provider)
 719 {
 720         GKeyFile *keyfile;
 721
 722         DBG("provider %p", provider);
 723
 724         keyfile = __connman_storage_load_provider(provider->identifier);
 725         if (keyfile == NULL)
 726                 return -ENOENT;
 727
 728         provider_load_from_keyfile(provider, keyfile);
 729
 730         g_key_file_free(keyfile);
 731         return 0;
 732 }
 733
 734 static gchar **create_network_list(GSList *networks, gsize *count)
 735 {
 736         GSList *list;
 737         gchar **result = NULL;
 738         unsigned int num_elems = 0;
 739
 740         for (list = networks; list != NULL; list = g_slist_next(list)) {
 741                 struct vpn_route *route = list->data;
 742                 int family;
 743
 744                 result = g_try_realloc(result,
 745                                 (num_elems + 1) * sizeof(gchar *));
 746                 if (result == NULL)
 747                         return NULL;
 748
 749                 switch (route->family) {
 750                 case AF_INET:
 751                         family = 4;
 752                         break;
 753                 case AF_INET6:
 754                         family = 6;
 755                         break;
 756                 default:
 757                         family = 0;
 758                         break;
 759                 }
 760
 761                 result[num_elems] = g_strdup_printf("%d/%s/%s/%s",
 762                                 family, route->network, route->netmask,
 763                                 route->gateway == NULL ? "" : route->gateway);
 764
 765                 num_elems++;
 766         }
 767
 768         result = g_try_realloc(result, (num_elems + 1) * sizeof(gchar *));
 769         if (result == NULL)
 770                 return NULL;
 771
 772         result[num_elems] = NULL;
 773         *count = num_elems;
 774         return result;
 775 }
 776
 777 static int vpn_provider_save(struct vpn_provider *provider)
 778 {
 779         GKeyFile *keyfile;
 780
 781         DBG("provider %p", provider);
 782
 783         keyfile = g_key_file_new();
 784         if (keyfile == NULL)
 785                 return -ENOMEM;
 786
 787         g_key_file_set_string(keyfile, provider->identifier,
 788                         "Name", provider->name);
 789         g_key_file_set_string(keyfile, provider->identifier,
 790                         "Type", provider->type);
 791         g_key_file_set_string(keyfile, provider->identifier,
 792                         "Host", provider->host);
 793         g_key_file_set_string(keyfile, provider->identifier,
 794                         "VPN.Domain", provider->domain);
 795         if (provider->user_networks != NULL) {
 796                 gchar **networks;
 797                 gsize network_count;
 798
 799                 networks = create_network_list(provider->user_networks,
 800                                                         &network_count);
 801                 if (networks != NULL) {
 802                         g_key_file_set_string_list(keyfile,
 803                                                 provider->identifier,
 804                                                 "Networks",
 805                                                 (const gchar ** const)networks,
 806                                                 network_count);
 807                         g_strfreev(networks);
 808                 }
 809         }
 810
 811         if (provider->driver != NULL && provider->driver->save != NULL)
 812                 provider->driver->save(provider, keyfile);
 813
 814         __connman_storage_save_provider(keyfile, provider->identifier);
 815         g_key_file_free(keyfile);
 816
 817         return 0;
 818 }
 819
 820 static struct vpn_provider *vpn_provider_lookup(const char *identifier)
 821 {
 822         struct vpn_provider *provider = NULL;
 823
 824         provider = g_hash_table_lookup(provider_hash, identifier);
 825
 826         return provider;
 827 }
 828
 829 static gboolean match_driver(struct vpn_provider *provider,
 830                                 struct vpn_provider_driver *driver)
 831 {
 832         if (g_strcmp0(driver->name, provider->type) == 0)
 833                 return TRUE;
 834
 835         return FALSE;
 836 }
 837
 838 static int provider_probe(struct vpn_provider *provider)
 839 {
 840         GSList *list;
 841
 842         DBG("provider %p name %s", provider, provider->name);
 843
 844         if (provider->driver != NULL)
 845                 return -EALREADY;
 846
 847         for (list = driver_list; list; list = list->next) {
 848                 struct vpn_provider_driver *driver = list->data;
 849
 850                 if (match_driver(provider, driver) == FALSE)
 851                         continue;
 852
 853                 DBG("driver %p name %s", driver, driver->name);
 854
 855                 if (driver->probe != NULL && driver->probe(provider) == 0) {
 856                         provider->driver = driver;
 857                         break;
 858                 }
 859         }
 860
 861         if (provider->driver == NULL)
 862                 return -ENODEV;
 863
 864         return 0;
 865 }
 866
 867 static void provider_remove(struct vpn_provider *provider)
 868 {
 869         if (provider->driver != NULL) {
 870                 provider->driver->remove(provider);
 871                 provider->driver = NULL;
 872         }
 873 }
 874
 875 static int provider_register(struct vpn_provider *provider)
 876 {
 877         return provider_probe(provider);
 878 }
 879
 880 static void provider_unregister(struct vpn_provider *provider)
 881 {
 882         provider_remove(provider);
 883 }
 884
 885 struct vpn_provider *
 886 vpn_provider_ref_debug(struct vpn_provider *provider,
 887                         const char *file, int line, const char *caller)
 888 {
 889         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount + 1,
 890                 file, line, caller);
 891
 892         __sync_fetch_and_add(&provider->refcount, 1);
 893
 894         return provider;
 895 }
 896
 897 static void provider_destruct(struct vpn_provider *provider)
 898 {
 899         DBG("provider %p", provider);
 900
 901         if (provider->notify_id != 0)
 902                 g_source_remove(provider->notify_id);
 903
 904         g_free(provider->name);
 905         g_free(provider->type);
 906         g_free(provider->host);
 907         g_free(provider->domain);
 908         g_free(provider->identifier);
 909         g_free(provider->path);
 910         g_slist_free_full(provider->user_networks, free_route);
 911         g_strfreev(provider->nameservers);
 912         g_hash_table_destroy(provider->routes);
 913         g_hash_table_destroy(provider->user_routes);
 914         g_hash_table_destroy(provider->setting_strings);
 915         if (provider->resolv != NULL) {
 916                 g_resolv_unref(provider->resolv);
 917                 provider->resolv = NULL;
 918         }
 919         __vpn_ipconfig_unref(provider->ipconfig_ipv4);
 920         __vpn_ipconfig_unref(provider->ipconfig_ipv6);
 921
 922         g_strfreev(provider->host_ip);
 923         g_free(provider);
 924 }
 925
 926 void vpn_provider_unref_debug(struct vpn_provider *provider,
 927                                 const char *file, int line, const char *caller)
 928 {
 929         DBG("%p ref %d by %s:%d:%s()", provider, provider->refcount - 1,
 930                 file, line, caller);
 931
 932         if (__sync_fetch_and_sub(&provider->refcount, 1) != 1)
 933                 return;
 934
 935         provider_remove(provider);
 936
 937         provider_destruct(provider);
 938 }
 939
 940 static void configuration_count_add(void)
 941 {
 942         DBG("count %d", configuration_count + 1);
 943
 944         __sync_fetch_and_add(&configuration_count, 1);
 945 }
 946
 947 static void configuration_count_del(void)
 948 {
 949         DBG("count %d", configuration_count - 1);
 950
 951         if (__sync_fetch_and_sub(&configuration_count, 1) != 1)
 952                 return;
 953
 954         raise(SIGTERM);
 955 }
 956
 957 int __vpn_provider_disconnect(struct vpn_provider *provider)
 958 {
 959         int err;
 960
 961         DBG("provider %p", provider);
 962
 963         if (provider->driver != NULL && provider->driver->disconnect != NULL)
 964                 err = provider->driver->disconnect(provider);
 965         else
 966                 return -EOPNOTSUPP;
 967
 968         if (err < 0) {
 969                 if (err != -EINPROGRESS)
 970                         return err;
 971
 972                 return -EINPROGRESS;
 973         }
 974
 975         return 0;
 976 }
 977
 978 int __vpn_provider_connect(struct vpn_provider *provider)
 979 {
 980         int err;
 981
 982         DBG("provider %p", provider);
 983
 984         if (provider->driver != NULL && provider->driver->connect != NULL)
 985                 err = provider->driver->connect(provider);
 986         else
 987                 return -EOPNOTSUPP;
 988
 989         return err;
 990 }
 991
 992 static void connection_removed_signal(struct vpn_provider *provider)
 993 {
 994         DBusMessage *signal;
 995         DBusMessageIter iter;
 996
 997         signal = dbus_message_new_signal(VPN_MANAGER_PATH,
 998                         VPN_MANAGER_INTERFACE, "ConnectionRemoved");
 999         if (signal == NULL)
1000                 return;
1001
1002         dbus_message_iter_init_append(signal, &iter);
1003         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
1004                                                         &provider->path);
1005         dbus_connection_send(connection, signal, NULL);
1006         dbus_message_unref(signal);
1007 }
1008
1009 static char *get_ident(const char *path)
1010 {
1011         char *pos;
1012
1013         if (*path != '/')
1014                 return NULL;
1015
1016         pos = strrchr(path, '/');
1017         if (pos == NULL)
1018                 return NULL;
1019
1020         return pos + 1;
1021 }
1022
1023 int __vpn_provider_remove(const char *path)
1024 {
1025         struct vpn_provider *provider;
1026         char *ident;
1027
1028         DBG("path %s", path);
1029
1030         ident = get_ident(path);
1031
1032         provider = vpn_provider_lookup(ident);
1033         if (provider != NULL) {
1034                 DBG("Removing VPN %s", provider->identifier);
1035
1036                 connection_removed_signal(provider);
1037
1038                 provider_unregister(provider);
1039                 g_hash_table_remove(provider_hash, provider->identifier);
1040
1041                 __connman_storage_remove_provider(ident);
1042                 return 0;
1043         }
1044
1045         return -ENXIO;
1046 }
1047
1048 static void append_ipv4(DBusMessageIter *iter, void *user_data)
1049 {
1050         struct vpn_provider *provider = user_data;
1051         const char *address, *gateway, *peer;
1052
1053         address = __vpn_ipconfig_get_local(provider->ipconfig_ipv4);
1054         if (address != NULL) {
1055                 in_addr_t addr;
1056                 struct in_addr netmask;
1057                 char *mask;
1058                 int prefixlen;
1059
1060                 prefixlen = __vpn_ipconfig_get_prefixlen(
1061                                                 provider->ipconfig_ipv4);
1062
1063                 addr = 0xffffffff << (32 - prefixlen);
1064                 netmask.s_addr = htonl(addr);
1065                 mask = inet_ntoa(netmask);
1066
1067                 connman_dbus_dict_append_basic(iter, "Address",
1068                                                 DBUS_TYPE_STRING, &address);
1069
1070                 connman_dbus_dict_append_basic(iter, "Netmask",
1071                                                 DBUS_TYPE_STRING, &mask);
1072         }
1073
1074         gateway = __vpn_ipconfig_get_gateway(provider->ipconfig_ipv4);
1075         if (gateway != NULL)
1076                 connman_dbus_dict_append_basic(iter, "Gateway",
1077                                                 DBUS_TYPE_STRING, &gateway);
1078
1079         peer = __vpn_ipconfig_get_peer(provider->ipconfig_ipv4);
1080         if (peer != NULL)
1081                 connman_dbus_dict_append_basic(iter, "Peer",
1082                                                 DBUS_TYPE_STRING, &peer);
1083 }
1084
1085 static void append_ipv6(DBusMessageIter *iter, void *user_data)
1086 {
1087         struct vpn_provider *provider = user_data;
1088         const char *address, *gateway, *peer;
1089
1090         address = __vpn_ipconfig_get_local(provider->ipconfig_ipv6);
1091         if (address != NULL) {
1092                 unsigned char prefixlen;
1093
1094                 connman_dbus_dict_append_basic(iter, "Address",
1095                                                 DBUS_TYPE_STRING, &address);
1096
1097                 prefixlen = __vpn_ipconfig_get_prefixlen(
1098                                                 provider->ipconfig_ipv6);
1099
1100                 connman_dbus_dict_append_basic(iter, "PrefixLength",
1101                                                 DBUS_TYPE_BYTE, &prefixlen);
1102         }
1103
1104         gateway = __vpn_ipconfig_get_gateway(provider->ipconfig_ipv6);
1105         if (gateway != NULL)
1106                 connman_dbus_dict_append_basic(iter, "Gateway",
1107                                                 DBUS_TYPE_STRING, &gateway);
1108
1109         peer = __vpn_ipconfig_get_peer(provider->ipconfig_ipv6);
1110         if (peer != NULL)
1111                 connman_dbus_dict_append_basic(iter, "Peer",
1112                                                 DBUS_TYPE_STRING, &peer);
1113 }
1114
1115 static const char *state2string(enum vpn_provider_state state)
1116 {
1117         switch (state) {
1118         case VPN_PROVIDER_STATE_UNKNOWN:
1119                 break;
1120         case VPN_PROVIDER_STATE_IDLE:
1121                 return "idle";
1122         case VPN_PROVIDER_STATE_CONNECT:
1123                 return "configuration";
1124         case VPN_PROVIDER_STATE_READY:
1125                 return "ready";
1126         case VPN_PROVIDER_STATE_DISCONNECT:
1127                 return "disconnect";
1128         case VPN_PROVIDER_STATE_FAILURE:
1129                 return "failure";
1130         }
1131
1132         return NULL;
1133 }
1134
1135 static int provider_indicate_state(struct vpn_provider *provider,
1136                                 enum vpn_provider_state state)
1137 {
1138         const char *str;
1139
1140         DBG("provider %p state %d", provider, state);
1141
1142         str = state2string(state);
1143         if (str == NULL)
1144                 return -EINVAL;
1145
1146         provider->state = state;
1147
1148         if (state == VPN_PROVIDER_STATE_READY) {
1149                 connman_dbus_property_changed_basic(provider->path,
1150                                         VPN_CONNECTION_INTERFACE, "Index",
1151                                         DBUS_TYPE_INT32, &provider->index);
1152
1153                 if (provider->family == AF_INET)
1154                         connman_dbus_property_changed_dict(provider->path,
1155                                         VPN_CONNECTION_INTERFACE, "IPv4",
1156                                         append_ipv4, provider);
1157                 else if (provider->family == AF_INET6)
1158                         connman_dbus_property_changed_dict(provider->path,
1159                                         VPN_CONNECTION_INTERFACE, "IPv6",
1160                                         append_ipv6, provider);
1161         }
1162
1163         connman_dbus_property_changed_basic(provider->path,
1164                                         VPN_CONNECTION_INTERFACE, "State",
1165                                         DBUS_TYPE_STRING, &str);
1166         return 0;
1167 }
1168
1169 static void append_nameservers(DBusMessageIter *iter, char **servers)
1170 {
1171         int i;
1172
1173         DBG("%p", servers);
1174
1175         for (i = 0; servers[i] != NULL; i++) {
1176                 DBG("servers[%d] %s", i, servers[i]);
1177                 dbus_message_iter_append_basic(iter,
1178                                         DBUS_TYPE_STRING, &servers[i]);
1179         }
1180 }
1181
1182 static void append_dns(DBusMessageIter *iter, void *user_data)
1183 {
1184         struct vpn_provider *provider = user_data;
1185
1186         if (provider->nameservers != NULL)
1187                 append_nameservers(iter, provider->nameservers);
1188 }
1189
1190 static void append_state(DBusMessageIter *iter,
1191                                         struct vpn_provider *provider)
1192 {
1193         char *str;
1194
1195         switch (provider->state) {
1196         case VPN_PROVIDER_STATE_UNKNOWN:
1197         case VPN_PROVIDER_STATE_IDLE:
1198                 str = "idle";
1199                 break;
1200         case VPN_PROVIDER_STATE_CONNECT:
1201                 str = "configuration";
1202                 break;
1203         case VPN_PROVIDER_STATE_READY:
1204                 str = "ready";
1205                 break;
1206         case VPN_PROVIDER_STATE_DISCONNECT:
1207                 str = "disconnect";
1208                 break;
1209         case VPN_PROVIDER_STATE_FAILURE:
1210                 str = "failure";
1211                 break;
1212         }
1213
1214         connman_dbus_dict_append_basic(iter, "State",
1215                                 DBUS_TYPE_STRING, &str);
1216 }
1217
1218 static void append_properties(DBusMessageIter *iter,
1219                                         struct vpn_provider *provider)
1220 {
1221         DBusMessageIter dict;
1222
1223         connman_dbus_dict_open(iter, &dict);
1224
1225         append_state(&dict, provider);
1226
1227         if (provider->type != NULL)
1228                 connman_dbus_dict_append_basic(&dict, "Type",
1229                                         DBUS_TYPE_STRING, &provider->type);
1230
1231         if (provider->name != NULL)
1232                 connman_dbus_dict_append_basic(&dict, "Name",
1233                                         DBUS_TYPE_STRING, &provider->name);
1234
1235         if (provider->host != NULL)
1236                 connman_dbus_dict_append_basic(&dict, "Host",
1237                                         DBUS_TYPE_STRING, &provider->host);
1238         if (provider->index >= 0)
1239                 connman_dbus_dict_append_basic(&dict, "Index",
1240                                         DBUS_TYPE_INT32, &provider->index);
1241         if (provider->domain != NULL)
1242                 connman_dbus_dict_append_basic(&dict, "Domain",
1243                                         DBUS_TYPE_STRING, &provider->domain);
1244
1245         if (provider->family == AF_INET)
1246                 connman_dbus_dict_append_dict(&dict, "IPv4", append_ipv4,
1247                                                 provider);
1248         else if (provider->family == AF_INET6)
1249                 connman_dbus_dict_append_dict(&dict, "IPv6", append_ipv6,
1250                                                 provider);
1251
1252         connman_dbus_dict_append_array(&dict, "Nameservers",
1253                                 DBUS_TYPE_STRING, append_dns, provider);
1254
1255         connman_dbus_dict_append_array(&dict, "UserRoutes",
1256                                 DBUS_TYPE_DICT_ENTRY, append_routes,
1257                                 provider->user_routes);
1258
1259         connman_dbus_dict_append_array(&dict, "ServerRoutes",
1260                                 DBUS_TYPE_DICT_ENTRY, append_routes,
1261                                 provider->routes);
1262
1263         connman_dbus_dict_close(iter, &dict);
1264 }
1265
1266 static void connection_added_signal(struct vpn_provider *provider)
1267 {
1268         DBusMessage *signal;
1269         DBusMessageIter iter;
1270
1271         signal = dbus_message_new_signal(VPN_MANAGER_PATH,
1272                         VPN_MANAGER_INTERFACE, "ConnectionAdded");
1273         if (signal == NULL)
1274                 return;
1275
1276         dbus_message_iter_init_append(signal, &iter);
1277         dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
1278                                                         &provider->path);
1279         append_properties(&iter, provider);
1280
1281         dbus_connection_send(connection, signal, NULL);
1282         dbus_message_unref(signal);
1283 }
1284
1285 static connman_bool_t check_host(char **hosts, char *host)
1286 {
1287         int i;
1288
1289         if (hosts == NULL)
1290                 return FALSE;
1291
1292         for (i = 0; hosts[i] != NULL; i++) {
1293                 if (g_strcmp0(hosts[i], host) == 0)
1294                         return TRUE;
1295         }
1296
1297         return FALSE;
1298 }
1299
1300 static void provider_append_routes(gpointer key, gpointer value,
1301                                         gpointer user_data)
1302 {
1303         struct vpn_route *route = value;
1304         struct vpn_provider *provider = user_data;
1305         int index = provider->index;
1306
1307         if (handle_routes == FALSE)
1308                 return;
1309
1310         /*
1311          * If the VPN administrator/user has given a route to
1312          * VPN server, then we must discard that because the
1313          * server cannot be contacted via VPN tunnel.
1314          */
1315         if (check_host(provider->host_ip, route->network) == TRUE) {
1316                 DBG("Discarding VPN route to %s via %s at index %d",
1317                         route->network, route->gateway, index);
1318                 return;
1319         }
1320
1321         if (route->family == AF_INET6) {
1322                 unsigned char prefix_len = atoi(route->netmask);
1323
1324                 connman_inet_add_ipv6_network_route(index, route->network,
1325                                                         route->gateway,
1326                                                         prefix_len);
1327         } else {
1328                 connman_inet_add_network_route(index, route->network,
1329                                                 route->gateway,
1330                                                 route->netmask);
1331         }
1332 }
1333
1334 static int set_connected(struct vpn_provider *provider,
1335                                         connman_bool_t connected)
1336 {
1337         struct vpn_ipconfig *ipconfig;
1338
1339         DBG("provider %p id %s connected %d", provider,
1340                                         provider->identifier, connected);
1341
1342         if (connected == TRUE) {
1343                 if (provider->family == AF_INET6)
1344                         ipconfig = provider->ipconfig_ipv6;
1345                 else
1346                         ipconfig = provider->ipconfig_ipv4;
1347
1348                 __vpn_ipconfig_address_add(ipconfig, provider->family);
1349
1350                 if (handle_routes == TRUE)
1351                         __vpn_ipconfig_gateway_add(ipconfig, provider->family);
1352
1353                 provider_indicate_state(provider,
1354                                         VPN_PROVIDER_STATE_READY);
1355
1356                 g_hash_table_foreach(provider->routes, provider_append_routes,
1357                                         provider);
1358
1359                 g_hash_table_foreach(provider->user_routes,
1360                                         provider_append_routes, provider);
1361
1362         } else {
1363                 provider_indicate_state(provider,
1364                                         VPN_PROVIDER_STATE_DISCONNECT);
1365
1366                 provider_indicate_state(provider,
1367                                         VPN_PROVIDER_STATE_IDLE);
1368         }
1369
1370         return 0;
1371 }
1372
1373 int vpn_provider_set_state(struct vpn_provider *provider,
1374                                         enum vpn_provider_state state)
1375 {
1376         if (provider == NULL)
1377                 return -EINVAL;
1378
1379         switch (state) {
1380         case VPN_PROVIDER_STATE_UNKNOWN:
1381                 return -EINVAL;
1382         case VPN_PROVIDER_STATE_IDLE:
1383                 return set_connected(provider, FALSE);
1384         case VPN_PROVIDER_STATE_CONNECT:
1385                 return provider_indicate_state(provider, state);
1386         case VPN_PROVIDER_STATE_READY:
1387                 return set_connected(provider, TRUE);
1388         case VPN_PROVIDER_STATE_DISCONNECT:
1389                 return provider_indicate_state(provider, state);
1390         case VPN_PROVIDER_STATE_FAILURE:
1391                 return provider_indicate_state(provider, state);
1392         }
1393         return -EINVAL;
1394 }
1395
1396 int vpn_provider_indicate_error(struct vpn_provider *provider,
1397                                         enum vpn_provider_error error)
1398 {
1399         DBG("provider %p id %s error %d", provider, provider->identifier,
1400                                                                         error);
1401
1402         switch (error) {
1403         case VPN_PROVIDER_ERROR_LOGIN_FAILED:
1404                 break;
1405         case VPN_PROVIDER_ERROR_AUTH_FAILED:
1406                 break;
1407         case VPN_PROVIDER_ERROR_CONNECT_FAILED:
1408                 break;
1409         default:
1410                 break;
1411         }
1412
1413         return 0;
1414 }
1415
1416 static void unregister_provider(gpointer data)
1417 {
1418         struct vpn_provider *provider = data;
1419
1420         configuration_count_del();
1421
1422         vpn_provider_unref(provider);
1423 }
1424
1425 static void provider_initialize(struct vpn_provider *provider)
1426 {
1427         DBG("provider %p", provider);
1428
1429         provider->index = 0;
1430         provider->fd = -1;
1431         provider->name = NULL;
1432         provider->type = NULL;
1433         provider->domain = NULL;
1434         provider->identifier = NULL;
1435         provider->user_networks = NULL;
1436         provider->routes = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1437                                         NULL, free_route);
1438         provider->user_routes = g_hash_table_new_full(g_str_hash, g_str_equal,
1439                                         g_free, free_route);
1440         provider->setting_strings = g_hash_table_new_full(g_str_hash,
1441                                                 g_str_equal, g_free, g_free);
1442 }
1443
1444 static struct vpn_provider *vpn_provider_new(void)
1445 {
1446         struct vpn_provider *provider;
1447
1448         provider = g_try_new0(struct vpn_provider, 1);
1449         if (provider == NULL)
1450                 return NULL;
1451
1452         provider->refcount = 1;
1453
1454         DBG("provider %p", provider);
1455         provider_initialize(provider);
1456
1457         return provider;
1458 }
1459
1460 static struct vpn_provider *vpn_provider_get(const char *identifier)
1461 {
1462         struct vpn_provider *provider;
1463
1464         provider = g_hash_table_lookup(provider_hash, identifier);
1465         if (provider != NULL)
1466                 return provider;
1467
1468         provider = vpn_provider_new();
1469         if (provider == NULL)
1470                 return NULL;
1471
1472         DBG("provider %p", provider);
1473
1474         provider->identifier = g_strdup(identifier);
1475
1476         g_hash_table_insert(provider_hash, provider->identifier, provider);
1477
1478         configuration_count_add();
1479
1480         return provider;
1481 }
1482
1483 static void provider_dbus_ident(char *ident)
1484 {
1485         int i, len = strlen(ident);
1486
1487         for (i = 0; i < len; i++) {
1488                 if (ident[i] >= '0' && ident[i] <= '9')
1489                         continue;
1490                 if (ident[i] >= 'a' && ident[i] <= 'z')
1491                         continue;
1492                 if (ident[i] >= 'A' && ident[i] <= 'Z')
1493                         continue;
1494                 ident[i] = '_';
1495         }
1496 }
1497
1498 static int connection_unregister(struct vpn_provider *provider)
1499 {
1500         if (provider->path == NULL)
1501                 return -EALREADY;
1502
1503         g_dbus_unregister_interface(connection, provider->path,
1504                                 VPN_CONNECTION_INTERFACE);
1505
1506         g_free(provider->path);
1507         provider->path = NULL;
1508
1509         return 0;
1510 }
1511
1512 static int connection_register(struct vpn_provider *provider)
1513 {
1514         DBG("provider %p path %s", provider, provider->path);
1515
1516         if (provider->path != NULL)
1517                 return -EALREADY;
1518
1519         provider->path = g_strdup_printf("%s/connection/%s", VPN_PATH,
1520                                                 provider->identifier);
1521
1522         g_dbus_register_interface(connection, provider->path,
1523                                 VPN_CONNECTION_INTERFACE,
1524                                 connection_methods, connection_signals,
1525                                 NULL, provider, NULL);
1526
1527         return 0;
1528 }
1529
1530 static struct vpn_provider *provider_create_from_keyfile(GKeyFile *keyfile,
1531                 const char *ident)
1532 {
1533         struct vpn_provider *provider;
1534
1535         if (keyfile == NULL || ident == NULL)
1536                 return NULL;
1537
1538         provider = vpn_provider_lookup(ident);
1539         if (provider == NULL) {
1540                 provider = vpn_provider_get(ident);
1541                 if (provider == NULL) {
1542                         DBG("can not create provider");
1543                         return NULL;
1544                 }
1545
1546                 provider_load_from_keyfile(provider, keyfile);
1547
1548                 if (provider->name == NULL || provider->host == NULL ||
1549                                 provider->domain == NULL) {
1550                         DBG("cannot get name, host or domain");
1551                         vpn_provider_unref(provider);
1552                         return NULL;
1553                 }
1554
1555                 if (provider_register(provider) == 0)
1556                         connection_register(provider);
1557         }
1558         return provider;
1559 }
1560
1561 static void provider_create_all_from_type(const char *provider_type)
1562 {
1563         unsigned int i;
1564         char **providers;
1565         char *id, *type;
1566         GKeyFile *keyfile;
1567
1568         DBG("provider type %s", provider_type);
1569
1570         providers = __connman_storage_get_providers();
1571
1572         for (i = 0; providers[i] != NULL; i+=1) {
1573
1574                 if (strncmp(providers[i], "provider_", 9) != 0)
1575                         continue;
1576
1577                 id = providers[i] + 9;
1578                 keyfile = __connman_storage_load_provider(id);
1579
1580                 if (keyfile == NULL)
1581                         continue;
1582
1583                 type = g_key_file_get_string(keyfile, id, "Type", NULL);
1584
1585                 DBG("keyfile %p id %s type %s", keyfile, id, type);
1586
1587                 if (strcmp(provider_type, type) != 0) {
1588                         g_free(type);
1589                         g_key_file_free(keyfile);
1590                         continue;
1591                 }
1592
1593                 if (provider_create_from_keyfile(keyfile, id) == NULL)
1594                         DBG("could not create provider");
1595
1596                 g_free(type);
1597                 g_key_file_free(keyfile);
1598         }
1599         g_strfreev(providers);
1600 }
1601
1602 int __vpn_provider_create(DBusMessage *msg)
1603 {
1604         struct vpn_provider *provider;
1605         DBusMessageIter iter, array;
1606         const char *type = NULL, *name = NULL;
1607         const char *host = NULL, *domain = NULL;
1608         GSList *networks = NULL;
1609         char *ident;
1610         int err;
1611
1612         dbus_message_iter_init(msg, &iter);
1613         dbus_message_iter_recurse(&iter, &array);
1614
1615         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1616                 DBusMessageIter entry, value;
1617                 const char *key;
1618
1619                 dbus_message_iter_recurse(&array, &entry);
1620                 dbus_message_iter_get_basic(&entry, &key);
1621
1622                 dbus_message_iter_next(&entry);
1623                 dbus_message_iter_recurse(&entry, &value);
1624
1625                 switch (dbus_message_iter_get_arg_type(&value)) {
1626                 case DBUS_TYPE_STRING:
1627                         if (g_str_equal(key, "Type") == TRUE)
1628                                 dbus_message_iter_get_basic(&value, &type);
1629                         else if (g_str_equal(key, "Name") == TRUE)
1630                                 dbus_message_iter_get_basic(&value, &name);
1631                         else if (g_str_equal(key, "Host") == TRUE)
1632                                 dbus_message_iter_get_basic(&value, &host);
1633                         else if (g_str_equal(key, "VPN.Domain") == TRUE)
1634                                 dbus_message_iter_get_basic(&value, &domain);
1635                         break;
1636                 case DBUS_TYPE_ARRAY:
1637                         if (g_str_equal(key, "UserRoutes") == TRUE)
1638                                 networks = get_user_networks(&value);
1639                         break;
1640                 }
1641
1642                 dbus_message_iter_next(&array);
1643         }
1644
1645         if (host == NULL || domain == NULL)
1646                 return -EINVAL;
1647
1648         DBG("Type %s name %s networks %p", type, name, networks);
1649
1650         if (type == NULL || name == NULL)
1651                 return -EOPNOTSUPP;
1652
1653         ident = g_strdup_printf("%s_%s", host, domain);
1654         provider_dbus_ident(ident);
1655
1656         DBG("ident %s", ident);
1657
1658         provider = vpn_provider_lookup(ident);
1659         if (provider == NULL) {
1660                 provider = vpn_provider_get(ident);
1661                 if (provider == NULL) {
1662                         DBG("can not create provider");
1663                         g_free(ident);
1664                         return -EOPNOTSUPP;
1665                 }
1666
1667                 provider->host = g_strdup(host);
1668                 provider->domain = g_strdup(domain);
1669                 provider->name = g_strdup(name);
1670                 provider->type = g_strdup(type);
1671
1672                 if (provider_register(provider) == 0)
1673                         vpn_provider_load(provider);
1674
1675                 provider_resolv_host_addr(provider);
1676         }
1677
1678         if (networks != NULL) {
1679                 g_slist_free_full(provider->user_networks, free_route);
1680                 provider->user_networks = networks;
1681                 set_user_networks(provider, provider->user_networks);
1682         }
1683
1684         dbus_message_iter_init(msg, &iter);
1685         dbus_message_iter_recurse(&iter, &array);
1686
1687         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1688                 DBusMessageIter entry, value;
1689                 const char *key, *str;
1690
1691                 dbus_message_iter_recurse(&array, &entry);
1692                 dbus_message_iter_get_basic(&entry, &key);
1693
1694                 dbus_message_iter_next(&entry);
1695                 dbus_message_iter_recurse(&entry, &value);
1696
1697                 switch (dbus_message_iter_get_arg_type(&value)) {
1698                 case DBUS_TYPE_STRING:
1699                         dbus_message_iter_get_basic(&value, &str);
1700                         vpn_provider_set_string(provider, key, str);
1701                         break;
1702                 }
1703
1704                 dbus_message_iter_next(&array);
1705         }
1706
1707         g_free(ident);
1708
1709         vpn_provider_save(provider);
1710
1711         err = provider_register(provider);
1712         if (err != 0 && err != -EALREADY)
1713                 return err;
1714
1715         connection_register(provider);
1716
1717         DBG("provider %p index %d path %s", provider, provider->index,
1718                                                         provider->path);
1719
1720         g_dbus_send_reply(connection, msg,
1721                                 DBUS_TYPE_OBJECT_PATH, &provider->path,
1722                                 DBUS_TYPE_INVALID);
1723
1724         connection_added_signal(provider);
1725
1726         return 0;
1727 }
1728
1729 static void append_connection_structs(DBusMessageIter *iter, void *user_data)
1730 {
1731         DBusMessageIter entry;
1732         GHashTableIter hash;
1733         gpointer value, key;
1734
1735         g_hash_table_iter_init(&hash, provider_hash);
1736
1737         while (g_hash_table_iter_next(&hash, &key, &value) == TRUE) {
1738                 struct vpn_provider *provider = value;
1739
1740                 DBG("path %s", provider->path);
1741
1742                 if (provider->identifier == NULL)
1743                         continue;
1744
1745                 dbus_message_iter_open_container(iter, DBUS_TYPE_STRUCT,
1746                                 NULL, &entry);
1747                 dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
1748                                 &provider->path);
1749                 append_properties(&entry, provider);
1750                 dbus_message_iter_close_container(iter, &entry);
1751         }
1752 }
1753
1754 DBusMessage *__vpn_provider_get_connections(DBusMessage *msg)
1755 {
1756         DBusMessage *reply;
1757
1758         DBG("");
1759
1760         reply = dbus_message_new_method_return(msg);
1761         if (reply == NULL)
1762                 return NULL;
1763
1764         __connman_dbus_append_objpath_dict_array(reply,
1765                         append_connection_structs, NULL);
1766
1767         return reply;
1768 }
1769
1770 const char * __vpn_provider_get_ident(struct vpn_provider *provider)
1771 {
1772         if (provider == NULL)
1773                 return NULL;
1774
1775         return provider->identifier;
1776 }
1777
1778 int vpn_provider_set_string(struct vpn_provider *provider,
1779                                         const char *key, const char *value)
1780 {
1781         DBG("provider %p key %s value %s", provider, key, value);
1782
1783         if (g_str_equal(key, "Type") == TRUE) {
1784                 g_free(provider->type);
1785                 provider->type = g_strdup(value);
1786         } else if (g_str_equal(key, "Name") == TRUE) {
1787                 g_free(provider->name);
1788                 provider->name = g_strdup(value);
1789         } else if (g_str_equal(key, "Host") == TRUE) {
1790                 g_free(provider->host);
1791                 provider->host = g_strdup(value);
1792         } else if (g_str_equal(key, "VPN.Domain") == TRUE) {
1793                 g_free(provider->domain);
1794                 provider->domain = g_strdup(value);
1795         } else
1796                 g_hash_table_replace(provider->setting_strings,
1797                                 g_strdup(key), g_strdup(value));
1798         return 0;
1799 }
1800
1801 const char *vpn_provider_get_string(struct vpn_provider *provider,
1802                                                         const char *key)
1803 {
1804         DBG("provider %p key %s", provider, key);
1805
1806         if (g_str_equal(key, "Type") == TRUE)
1807                 return provider->type;
1808         else if (g_str_equal(key, "Name") == TRUE)
1809                 return provider->name;
1810         else if (g_str_equal(key, "Host") == TRUE)
1811                 return provider->host;
1812         else if (g_str_equal(key, "HostIP") == TRUE) {
1813                 if (provider->host_ip == NULL ||
1814                                 provider->host_ip[0] == NULL)
1815                         return provider->host;
1816                 else
1817                         return provider->host_ip[0];
1818         } else if (g_str_equal(key, "VPN.Domain") == TRUE)
1819                 return provider->domain;
1820
1821         return g_hash_table_lookup(provider->setting_strings, key);
1822 }
1823
1824 connman_bool_t __vpn_provider_check_routes(struct vpn_provider *provider)
1825 {
1826         if (provider == NULL)
1827                 return FALSE;
1828
1829         if (provider->user_routes != NULL &&
1830                         g_hash_table_size(provider->user_routes) > 0)
1831                 return TRUE;
1832
1833         if (provider->routes != NULL &&
1834                         g_hash_table_size(provider->routes) > 0)
1835                 return TRUE;
1836
1837         return FALSE;
1838 }
1839
1840 void *vpn_provider_get_data(struct vpn_provider *provider)
1841 {
1842         return provider->driver_data;
1843 }
1844
1845 void vpn_provider_set_data(struct vpn_provider *provider, void *data)
1846 {
1847         provider->driver_data = data;
1848 }
1849
1850 void vpn_provider_set_index(struct vpn_provider *provider, int index)
1851 {
1852         DBG("index %d provider %p", index, provider);
1853
1854         if (provider->ipconfig_ipv4 == NULL) {
1855                 provider->ipconfig_ipv4 = __vpn_ipconfig_create(index,
1856                                                                 AF_INET);
1857                 if (provider->ipconfig_ipv4 == NULL) {
1858                         DBG("Couldnt create ipconfig for IPv4");
1859                         goto done;
1860                 }
1861         }
1862
1863         __vpn_ipconfig_set_index(provider->ipconfig_ipv4, index);
1864
1865         if (provider->ipconfig_ipv6 == NULL) {
1866                 provider->ipconfig_ipv6 = __vpn_ipconfig_create(index,
1867                                                                 AF_INET6);
1868                 if (provider->ipconfig_ipv6 == NULL) {
1869                         DBG("Couldnt create ipconfig for IPv6");
1870                         goto done;
1871                 }
1872         }
1873
1874         __vpn_ipconfig_set_index(provider->ipconfig_ipv6, index);
1875
1876 done:
1877         provider->index = index;
1878 }
1879
1880 int vpn_provider_get_index(struct vpn_provider *provider)
1881 {
1882         return provider->index;
1883 }
1884
1885 int vpn_provider_set_ipaddress(struct vpn_provider *provider,
1886                                         struct connman_ipaddress *ipaddress)
1887 {
1888         struct vpn_ipconfig *ipconfig = NULL;
1889
1890         switch (ipaddress->family) {
1891         case AF_INET:
1892                 ipconfig = provider->ipconfig_ipv4;
1893                 break;
1894         case AF_INET6:
1895                 ipconfig = provider->ipconfig_ipv6;
1896                 break;
1897         default:
1898                 break;
1899         }
1900
1901         DBG("provider %p ipconfig %p family %d", provider, ipconfig,
1902                                                         ipaddress->family);
1903
1904         if (ipconfig == NULL)
1905                 return -EINVAL;
1906
1907         provider->family = ipaddress->family;
1908
1909         __vpn_ipconfig_set_local(ipconfig, ipaddress->local);
1910         __vpn_ipconfig_set_peer(ipconfig, ipaddress->peer);
1911         __vpn_ipconfig_set_broadcast(ipconfig, ipaddress->broadcast);
1912         __vpn_ipconfig_set_gateway(ipconfig, ipaddress->gateway);
1913         __vpn_ipconfig_set_prefixlen(ipconfig, ipaddress->prefixlen);
1914
1915         return 0;
1916 }
1917
1918 int vpn_provider_set_pac(struct vpn_provider *provider,
1919                                 const char *pac)
1920 {
1921         DBG("provider %p pac %s", provider, pac);
1922
1923         return 0;
1924 }
1925
1926
1927 int vpn_provider_set_domain(struct vpn_provider *provider,
1928                                         const char *domain)
1929 {
1930         DBG("provider %p domain %s", provider, domain);
1931
1932         g_free(provider->domain);
1933         provider->domain = g_strdup(domain);
1934
1935         return 0;
1936 }
1937
1938 int vpn_provider_set_nameservers(struct vpn_provider *provider,
1939                                         const char *nameservers)
1940 {
1941         DBG("provider %p nameservers %s", provider, nameservers);
1942
1943         g_strfreev(provider->nameservers);
1944         provider->nameservers = NULL;
1945
1946         if (nameservers == NULL)
1947                 return 0;
1948
1949         provider->nameservers = g_strsplit(nameservers, " ", 0);
1950
1951         return 0;
1952 }
1953
1954 enum provider_route_type {
1955         PROVIDER_ROUTE_TYPE_NONE = 0,
1956         PROVIDER_ROUTE_TYPE_MASK = 1,
1957         PROVIDER_ROUTE_TYPE_ADDR = 2,
1958         PROVIDER_ROUTE_TYPE_GW   = 3,
1959 };
1960
1961 static int route_env_parse(struct vpn_provider *provider, const char *key,
1962                                 int *family, unsigned long *idx,
1963                                 enum provider_route_type *type)
1964 {
1965         char *end;
1966         const char *start;
1967
1968         DBG("name %s", provider->name);
1969
1970         if (!strcmp(provider->type, "openvpn")) {
1971                 if (g_str_has_prefix(key, "route_network_") == TRUE) {
1972                         start = key + strlen("route_network_");
1973                         *type = PROVIDER_ROUTE_TYPE_ADDR;
1974                 } else if (g_str_has_prefix(key, "route_netmask_") == TRUE) {
1975                         start = key + strlen("route_netmask_");
1976                         *type = PROVIDER_ROUTE_TYPE_MASK;
1977                 } else if (g_str_has_prefix(key, "route_gateway_") == TRUE) {
1978                         start = key + strlen("route_gateway_");
1979                         *type = PROVIDER_ROUTE_TYPE_GW;
1980                 } else
1981                         return -EINVAL;
1982
1983                 *family = AF_INET;
1984                 *idx = g_ascii_strtoull(start, &end, 10);
1985
1986         } else if (!strcmp(provider->type, "openconnect")) {
1987                 if (g_str_has_prefix(key, "CISCO_SPLIT_INC_") == TRUE) {
1988                         *family = AF_INET;
1989                         start = key + strlen("CISCO_SPLIT_INC_");
1990                 } else if (g_str_has_prefix(key,
1991                                         "CISCO_IPV6_SPLIT_INC_") == TRUE) {
1992                         *family = AF_INET6;
1993                         start = key + strlen("CISCO_IPV6_SPLIT_INC_");
1994                 } else
1995                         return -EINVAL;
1996
1997                 *idx = g_ascii_strtoull(start, &end, 10);
1998
1999                 if (strncmp(end, "_ADDR", 5) == 0)
2000                         *type = PROVIDER_ROUTE_TYPE_ADDR;
2001                 else if (strncmp(end, "_MASK", 5) == 0)
2002                         *type = PROVIDER_ROUTE_TYPE_MASK;
2003                 else if (strncmp(end, "_MASKLEN", 8) == 0 &&
2004                                 *family == AF_INET6) {
2005                         *type = PROVIDER_ROUTE_TYPE_MASK;
2006                 } else
2007                         return -EINVAL;
2008         }
2009
2010         return 0;
2011 }
2012
2013 int vpn_provider_append_route(struct vpn_provider *provider,
2014                                         const char *key, const char *value)
2015 {
2016         struct vpn_route *route;
2017         int ret, family = 0;
2018         unsigned long idx = 0;
2019         enum provider_route_type type = PROVIDER_ROUTE_TYPE_NONE;
2020
2021         DBG("key %s value %s", key, value);
2022
2023         ret = route_env_parse(provider, key, &family, &idx, &type);
2024         if (ret < 0)
2025                 return ret;
2026
2027         DBG("idx %lu family %d type %d", idx, family, type);
2028
2029         route = g_hash_table_lookup(provider->routes, GINT_TO_POINTER(idx));
2030         if (route == NULL) {
2031                 route = g_try_new0(struct vpn_route, 1);
2032                 if (route == NULL) {
2033                         connman_error("out of memory");
2034                         return -ENOMEM;
2035                 }
2036
2037                 route->family = family;
2038
2039                 g_hash_table_replace(provider->routes, GINT_TO_POINTER(idx),
2040                                                 route);
2041         }
2042
2043         switch (type) {
2044         case PROVIDER_ROUTE_TYPE_NONE:
2045                 break;
2046         case PROVIDER_ROUTE_TYPE_MASK:
2047                 route->netmask = g_strdup(value);
2048                 break;
2049         case PROVIDER_ROUTE_TYPE_ADDR:
2050                 route->network = g_strdup(value);
2051                 break;
2052         case PROVIDER_ROUTE_TYPE_GW:
2053                 route->gateway = g_strdup(value);
2054                 break;
2055         }
2056
2057         if (handle_routes == FALSE) {
2058                 if (route->netmask != NULL && route->gateway != NULL &&
2059                                                         route->network != NULL)
2060                         provider_schedule_changed(provider,
2061                                                 SERVER_ROUTES_CHANGED);
2062         }
2063
2064         return 0;
2065 }
2066
2067 const char *vpn_provider_get_driver_name(struct vpn_provider *provider)
2068 {
2069         if (provider->driver == NULL)
2070                 return NULL;
2071
2072         return provider->driver->name;
2073 }
2074
2075 const char *vpn_provider_get_save_group(struct vpn_provider *provider)
2076 {
2077         return provider->identifier;
2078 }
2079
2080 static gint compare_priority(gconstpointer a, gconstpointer b)
2081 {
2082         return 0;
2083 }
2084
2085 static void clean_provider(gpointer key, gpointer value, gpointer user_data)
2086 {
2087         struct vpn_provider *provider = value;
2088
2089         if (provider->driver != NULL && provider->driver->remove)
2090                 provider->driver->remove(provider);
2091
2092         connection_unregister(provider);
2093 }
2094
2095 int vpn_provider_driver_register(struct vpn_provider_driver *driver)
2096 {
2097         DBG("driver %p name %s", driver, driver->name);
2098
2099         driver_list = g_slist_insert_sorted(driver_list, driver,
2100                                                         compare_priority);
2101         provider_create_all_from_type(driver->name);
2102         return 0;
2103 }
2104
2105 void vpn_provider_driver_unregister(struct vpn_provider_driver *driver)
2106 {
2107         DBG("driver %p name %s", driver, driver->name);
2108
2109         driver_list = g_slist_remove(driver_list, driver);
2110 }
2111
2112 int __vpn_provider_init(gboolean do_routes)
2113 {
2114         DBG("");
2115
2116         handle_routes = do_routes;
2117
2118         connection = connman_dbus_get_connection();
2119
2120         provider_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
2121                                                 NULL, unregister_provider);
2122
2123         return 0;
2124 }
2125
2126 void __vpn_provider_cleanup(void)
2127 {
2128         DBG("");
2129
2130         g_hash_table_foreach(provider_hash, clean_provider, NULL);
2131
2132         g_hash_table_destroy(provider_hash);
2133         provider_hash = NULL;
2134
2135         dbus_connection_unref(connection);
2136 }