plugins/vpn.c

   1 /*
   2  *
   3  *  Connection Manager
   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 <string.h>
  27 #include <errno.h>
  28 #include <sys/socket.h>
  29 #include <stdlib.h>
  30 #include <glib.h>
  31
  32 #include <gdbus.h>
  33
  34 #define CONNMAN_API_SUBJECT_TO_CHANGE
  35 #include <connman/technology.h>
  36 #include <connman/plugin.h>
  37 #include <connman/log.h>
  38 #include <connman/dbus.h>
  39 #include <connman/provider.h>
  40 #include <connman/ipaddress.h>
  41 #include <connman/vpn-dbus.h>
  42 #include <connman/inet.h>
  43 #include <gweb/gresolv.h>
  44
  45 #define DBUS_TIMEOUT 10000
  46
  47 static DBusConnection *connection;
  48
  49 static GHashTable *vpn_connections = NULL;
  50 static guint watch;
  51 static guint added_watch;
  52 static guint removed_watch;
  53 static guint property_watch;
  54
  55 struct vpn_route {
  56         int family;
  57         char *network;
  58         char *netmask;
  59         char *gateway;
  60 };
  61
  62 struct config_create_data {
  63         connection_ready_cb callback;
  64         DBusMessage *message;
  65         char *path;
  66 };
  67
  68 struct connection_data {
  69         char *path;
  70         char *ident;
  71         struct connman_provider *provider;
  72         int index;
  73         DBusPendingCall *call;
  74         connman_bool_t connect_pending;
  75         struct config_create_data *cb_data;
  76
  77         char *state;
  78         char *type;
  79         char *name;
  80         char *host;
  81         char **host_ip;
  82         char *domain;
  83         char **nameservers;
  84         gboolean immutable;
  85
  86         GHashTable *server_routes;
  87         GHashTable *user_routes;
  88         GHashTable *setting_strings;
  89
  90         struct connman_ipaddress *ip;
  91
  92         GResolv *resolv;
  93         guint resolv_id;
  94 };
  95
  96 static int set_string(struct connman_provider *provider,
  97                                         const char *key, const char *value)
  98 {
  99         struct connection_data *data;
 100
 101         data = connman_provider_get_data(provider);
 102         if (data == NULL)
 103                 return -EINVAL;
 104
 105         DBG("data %p provider %p key %s value %s", data, provider, key, value);
 106
 107         if (g_str_equal(key, "Type") == TRUE) {
 108                 g_free(data->type);
 109                 data->type = g_strdup(value);
 110         } else if (g_str_equal(key, "Name") == TRUE) {
 111                 g_free(data->name);
 112                 data->name = g_strdup(value);
 113         } else if (g_str_equal(key, "Host") == TRUE) {
 114                 g_free(data->host);
 115                 data->host = g_strdup(value);
 116         } else if (g_str_equal(key, "VPN.Domain") == TRUE ||
 117                                 g_str_equal(key, "Domain") == TRUE) {
 118                 g_free(data->domain);
 119                 data->domain = g_strdup(value);
 120         } else
 121                 g_hash_table_replace(data->setting_strings,
 122                                 g_strdup(key), g_strdup(value));
 123         return 0;
 124 }
 125
 126 static const char *get_string(struct connman_provider *provider,
 127                                                         const char *key)
 128 {
 129         struct connection_data *data;
 130
 131         data = connman_provider_get_data(provider);
 132         if (data == NULL)
 133                 return NULL;
 134
 135         DBG("data %p provider %p key %s", data, provider, key);
 136
 137         if (g_str_equal(key, "Type") == TRUE)
 138                 return data->type;
 139         else if (g_str_equal(key, "Name") == TRUE)
 140                 return data->name;
 141         else if (g_str_equal(key, "Host") == TRUE)
 142                 return data->host;
 143         else if (g_str_equal(key, "HostIP") == TRUE) {
 144                 if (data->host_ip == NULL ||
 145                                 data->host_ip[0] == NULL)
 146                         return data->host;
 147                 else
 148                         return data->host_ip[0];
 149         } else if (g_str_equal(key, "VPN.Domain") == TRUE)
 150                 return data->domain;
 151
 152         return g_hash_table_lookup(data->setting_strings, key);
 153 }
 154
 155 static char *get_ident(const char *path)
 156 {
 157         char *pos;
 158
 159         if (*path != '/')
 160                 return NULL;
 161
 162         pos = strrchr(path, '/');
 163         if (pos == NULL)
 164                 return NULL;
 165
 166         return pos + 1;
 167 }
 168
 169 static void cancel_host_resolv(struct connection_data *data)
 170 {
 171         if (data->resolv_id != 0)
 172                 g_resolv_cancel_lookup(data->resolv, data->resolv_id);
 173
 174         data->resolv_id = 0;
 175
 176         g_resolv_unref(data->resolv);
 177         data->resolv = NULL;
 178 }
 179
 180 static gboolean remove_resolv(gpointer user_data)
 181 {
 182         struct connection_data *data = user_data;
 183
 184         cancel_host_resolv(data);
 185
 186         return FALSE;
 187 }
 188
 189 static void resolv_result(GResolvResultStatus status,
 190                                         char **results, gpointer user_data)
 191 {
 192         struct connection_data *data = user_data;
 193
 194         DBG("status %d", status);
 195
 196         if (status == G_RESOLV_RESULT_STATUS_SUCCESS && results != NULL &&
 197                                                 g_strv_length(results) > 0)
 198                 data->host_ip = g_strdupv(results);
 199
 200         /*
 201          * We cannot unref the resolver here as resolv struct is manipulated
 202          * by gresolv.c after we return from this callback.
 203          */
 204         g_timeout_add_seconds(0, remove_resolv, data);
 205
 206         data->resolv_id = 0;
 207 }
 208
 209 static void resolv_host_addr(struct connection_data *data)
 210 {
 211         if (data->host == NULL)
 212                 return;
 213
 214         if (connman_inet_check_ipaddress(data->host) > 0)
 215                 return;
 216
 217         if (data->host_ip != NULL)
 218                 return;
 219
 220         data->resolv = g_resolv_new(0);
 221         if (data->resolv == NULL) {
 222                 DBG("Cannot resolv %s", data->host);
 223                 return;
 224         }
 225
 226         DBG("Trying to resolv %s", data->host);
 227
 228         data->resolv_id = g_resolv_lookup_hostname(data->resolv, data->host,
 229                                                 resolv_result, data);
 230 }
 231
 232 static void free_config_cb_data(struct config_create_data *cb_data)
 233 {
 234         if (cb_data == NULL)
 235                 return;
 236
 237         g_free(cb_data->path);
 238         cb_data->path = NULL;
 239
 240         if (cb_data->message != NULL) {
 241                 dbus_message_unref(cb_data->message);
 242                 cb_data->message = NULL;
 243         }
 244
 245         cb_data->callback = NULL;
 246
 247         g_free(cb_data);
 248 }
 249
 250 static void set_provider_state(struct connection_data *data)
 251 {
 252         enum connman_provider_state state = CONNMAN_PROVIDER_STATE_UNKNOWN;
 253         int err = 0;
 254
 255         DBG("provider %p new state %s", data->provider, data->state);
 256
 257         if (g_str_equal(data->state, "ready") == TRUE) {
 258                 state = CONNMAN_PROVIDER_STATE_READY;
 259                 goto set;
 260         } else if (g_str_equal(data->state, "configuration") == TRUE) {
 261                 state = CONNMAN_PROVIDER_STATE_CONNECT;
 262         } else if (g_str_equal(data->state, "idle") == TRUE) {
 263                 state = CONNMAN_PROVIDER_STATE_IDLE;
 264         } else if (g_str_equal(data->state, "disconnect") == TRUE) {
 265                 err = ECONNREFUSED;
 266                 state = CONNMAN_PROVIDER_STATE_DISCONNECT;
 267                 goto set;
 268         } else if (g_str_equal(data->state, "failure") == TRUE) {
 269                 err = ECONNREFUSED;
 270                 state = CONNMAN_PROVIDER_STATE_FAILURE;
 271                 goto set;
 272         }
 273
 274         connman_provider_set_state(data->provider, state);
 275         return;
 276
 277 set:
 278         if (data->cb_data != NULL)
 279                 data->cb_data->callback(data->cb_data->message,
 280                                         err, data->ident);
 281
 282         connman_provider_set_state(data->provider, state);
 283
 284         free_config_cb_data(data->cb_data);
 285         data->cb_data = NULL;
 286 }
 287
 288 static int create_provider(struct connection_data *data, void *user_data)
 289 {
 290         struct connman_provider_driver *driver = user_data;
 291         int err;
 292
 293         DBG("%s", data->path);
 294
 295         data->provider = connman_provider_get(data->ident);
 296         if (data->provider == NULL)
 297                 return -ENOMEM;
 298
 299         DBG("provider %p name %s", data->provider, data->name);
 300
 301         connman_provider_set_data(data->provider, data);
 302         connman_provider_set_driver(data->provider, driver);
 303
 304         err = connman_provider_create_service(data->provider);
 305         if (err == 0) {
 306                 connman_provider_set_immutable(data->provider, data->immutable);
 307                 if (g_str_equal(data->state, "ready") == TRUE) {
 308                         connman_provider_set_index(data->provider,
 309                                                         data->index);
 310                         if (data->ip != NULL)
 311                                 connman_provider_set_ipaddress(data->provider,
 312                                                                 data->ip);
 313                 }
 314
 315                 set_provider_state(data);
 316         }
 317
 318         return 0;
 319 }
 320
 321 static void destroy_route(gpointer user_data)
 322 {
 323         struct vpn_route *route = user_data;
 324
 325         g_free(route->network);
 326         g_free(route->netmask);
 327         g_free(route->gateway);
 328         g_free(route);
 329 }
 330
 331 static struct connection_data *create_connection_data(const char *path)
 332 {
 333         struct connection_data *data;
 334
 335         data = g_try_new0(struct connection_data, 1);
 336         if (data == NULL)
 337                 return NULL;
 338
 339         DBG("path %s", path);
 340
 341         data->path = g_strdup(path);
 342         data->ident = g_strdup(get_ident(path));
 343         data->index = -1;
 344
 345         data->setting_strings = g_hash_table_new_full(g_str_hash,
 346                                                 g_str_equal, g_free, g_free);
 347
 348         data->server_routes = g_hash_table_new_full(g_direct_hash,
 349                                         g_str_equal, g_free, destroy_route);
 350         data->user_routes = g_hash_table_new_full(g_str_hash,
 351                                         g_str_equal, g_free, destroy_route);
 352
 353         return data;
 354 }
 355
 356 static int extract_ip(DBusMessageIter *array, int family,
 357                                                 struct connection_data *data)
 358 {
 359         DBusMessageIter dict;
 360         char *address = NULL, *gateway = NULL, *netmask = NULL, *peer = NULL;
 361         unsigned char prefix_len;
 362
 363         if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
 364                 return -EINVAL;
 365
 366         dbus_message_iter_recurse(array, &dict);
 367
 368         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
 369                 DBusMessageIter entry, value;
 370                 const char *key;
 371
 372                 dbus_message_iter_recurse(&dict, &entry);
 373                 dbus_message_iter_get_basic(&entry, &key);
 374
 375                 dbus_message_iter_next(&entry);
 376                 dbus_message_iter_recurse(&entry, &value);
 377
 378                 if (g_str_equal(key, "Address") == TRUE) {
 379                         dbus_message_iter_get_basic(&value, &address);
 380                         DBG("address %s", address);
 381                 } else if (g_str_equal(key, "Netmask") == TRUE) {
 382                         dbus_message_iter_get_basic(&value, &netmask);
 383                         DBG("netmask %s", netmask);
 384                 } else if (g_str_equal(key, "PrefixLength") == TRUE) {
 385                         dbus_message_iter_get_basic(&value, &netmask);
 386                         DBG("prefix length %s", netmask);
 387                 } else if (g_str_equal(key, "Peer") == TRUE) {
 388                         dbus_message_iter_get_basic(&value, &peer);
 389                         DBG("peer %s", peer);
 390                 } else if (g_str_equal(key, "Gateway") == TRUE) {
 391                         dbus_message_iter_get_basic(&value, &gateway);
 392                         DBG("gateway %s", gateway);
 393                 }
 394
 395                 dbus_message_iter_next(&dict);
 396         }
 397
 398         data->ip = connman_ipaddress_alloc(family);
 399         if (data->ip == NULL)
 400                 return -ENOMEM;
 401
 402         switch (family) {
 403         case AF_INET:
 404                 connman_ipaddress_set_ipv4(data->ip, address, netmask,
 405                                                                 gateway);
 406                 break;
 407         case AF_INET6:
 408                 prefix_len = atoi(netmask);
 409                 connman_ipaddress_set_ipv6(data->ip, address, prefix_len,
 410                                                                 gateway);
 411                 break;
 412         default:
 413                 return -EINVAL;
 414         }
 415
 416         connman_ipaddress_set_peer(data->ip, peer);
 417
 418         return 0;
 419 }
 420
 421 static int extract_nameservers(DBusMessageIter *array,
 422                                                 struct connection_data *data)
 423 {
 424         DBusMessageIter entry;
 425         char **nameservers = NULL;
 426         int i = 0;
 427
 428         dbus_message_iter_recurse(array, &entry);
 429
 430         while (dbus_message_iter_get_arg_type(&entry) == DBUS_TYPE_STRING) {
 431                 const char *nameserver;
 432
 433                 dbus_message_iter_get_basic(&entry, &nameserver);
 434
 435                 nameservers = g_try_renew(char *, nameservers, i + 2);
 436                 if (nameservers == NULL)
 437                         return -ENOMEM;
 438
 439                 DBG("[%d] %s", i, nameserver);
 440
 441                 nameservers[i] = g_strdup(nameserver);
 442                 if (nameservers[i] == NULL)
 443                         return -ENOMEM;
 444
 445                 nameservers[++i] = NULL;
 446
 447                 dbus_message_iter_next(&entry);
 448         }
 449
 450         g_strfreev(data->nameservers);
 451         data->nameservers = nameservers;
 452
 453         return 0;
 454 }
 455
 456 static int errorstr2val(const char *error) {
 457         if (g_strcmp0(error, CONNMAN_ERROR_INTERFACE ".InProgress") == 0)
 458                 return -EINPROGRESS;
 459
 460         if (g_strcmp0(error, CONNMAN_ERROR_INTERFACE ".AlreadyConnected") == 0)
 461                 return -EISCONN;
 462
 463         return -ECONNREFUSED;
 464 }
 465
 466 static void connect_reply(DBusPendingCall *call, void *user_data)
 467 {
 468         DBusMessage *reply;
 469         DBusError error;
 470         struct connection_data *data = user_data;
 471         struct config_create_data *cb_data = data->cb_data;
 472
 473         if (dbus_pending_call_get_completed(call) == FALSE)
 474                 return;
 475
 476         DBG("user_data %p path %s", user_data, cb_data ? cb_data->path : NULL);
 477
 478         reply = dbus_pending_call_steal_reply(call);
 479
 480         dbus_error_init(&error);
 481
 482         if (dbus_set_error_from_message(&error, reply) == TRUE) {
 483                 int err = errorstr2val(error.name);
 484                 if (err != -EINPROGRESS) {
 485                         connman_error("Connect reply: %s (%s)", error.message,
 486                                                                 error.name);
 487                         dbus_error_free(&error);
 488
 489                         DBG("data %p cb_data %p", data, cb_data);
 490                         if (cb_data != NULL) {
 491                                 cb_data->callback(cb_data->message, err, NULL);
 492                                 free_config_cb_data(cb_data);
 493                                 data->cb_data = NULL;
 494                         }
 495                         goto done;
 496                 }
 497                 dbus_error_free(&error);
 498         }
 499
 500         /*
 501          * The vpn connection is up when we get a "ready" state
 502          * property so at this point we do nothing for the provider
 503          * state.
 504          */
 505
 506 done:
 507         dbus_message_unref(reply);
 508
 509         dbus_pending_call_unref(call);
 510 }
 511
 512 static int connect_provider(struct connection_data *data, void *user_data)
 513 {
 514         DBusPendingCall *call;
 515         DBusMessage *message;
 516         struct config_create_data *cb_data = user_data;
 517
 518         DBG("data %p user %p path %s", data, cb_data, data->path);
 519
 520         data->connect_pending = FALSE;
 521
 522         message = dbus_message_new_method_call(VPN_SERVICE, data->path,
 523                                         VPN_CONNECTION_INTERFACE,
 524                                         VPN_CONNECT);
 525         if (message == NULL)
 526                 return -ENOMEM;
 527
 528         if (dbus_connection_send_with_reply(connection, message,
 529                                         &call, DBUS_TIMEOUT) == FALSE) {
 530                 connman_error("Unable to call %s.%s()",
 531                         VPN_CONNECTION_INTERFACE, VPN_CONNECT);
 532                 dbus_message_unref(message);
 533                 return -EINVAL;
 534         }
 535
 536         if (call == NULL) {
 537                 dbus_message_unref(message);
 538                 return -EINVAL;
 539         }
 540
 541         if (cb_data != NULL) {
 542                 g_free(cb_data->path);
 543                 cb_data->path = g_strdup(data->path);
 544         }
 545
 546         dbus_pending_call_set_notify(call, connect_reply, data, NULL);
 547
 548         dbus_message_unref(message);
 549
 550         return -EINPROGRESS;
 551 }
 552
 553 static void add_connection(const char *path, DBusMessageIter *properties,
 554                         void *user_data)
 555 {
 556         struct connection_data *data;
 557         int err;
 558         char *ident = get_ident(path);
 559         connman_bool_t found = FALSE;
 560
 561         data = g_hash_table_lookup(vpn_connections, ident);
 562         if (data != NULL) {
 563                 /*
 564                  * We might have a dummy connection struct here that
 565                  * was created by configuration_create_reply() so in
 566                  * that case just continue.
 567                  */
 568                 if (data->connect_pending == FALSE)
 569                         return;
 570
 571                 found = TRUE;
 572         } else {
 573                 data = create_connection_data(path);
 574                 if (data == NULL)
 575                         return;
 576         }
 577
 578         DBG("data %p path %s", data, path);
 579
 580         while (dbus_message_iter_get_arg_type(properties) ==
 581                         DBUS_TYPE_DICT_ENTRY) {
 582                 DBusMessageIter entry, value;
 583                 const char *key;
 584                 char *str;
 585
 586                 dbus_message_iter_recurse(properties, &entry);
 587                 dbus_message_iter_get_basic(&entry, &key);
 588
 589                 dbus_message_iter_next(&entry);
 590                 dbus_message_iter_recurse(&entry, &value);
 591
 592                 if (g_str_equal(key, "State") == TRUE) {
 593                         dbus_message_iter_get_basic(&value, &str);
 594                         DBG("state %s -> %s", data->state, str);
 595                         data->state = g_strdup(str);
 596                 } else if (g_str_equal(key, "IPv4") == TRUE) {
 597                         extract_ip(&value, AF_INET, data);
 598                 } else if (g_str_equal(key, "IPv6") == TRUE) {
 599                         extract_ip(&value, AF_INET6, data);
 600                 } else if (g_str_equal(key, "Name") == TRUE) {
 601                         dbus_message_iter_get_basic(&value, &str);
 602                         data->name = g_strdup(str);
 603                 } else if (g_str_equal(key, "Type") == TRUE) {
 604                         dbus_message_iter_get_basic(&value, &str);
 605                         data->type = g_strdup(str);
 606                 } else if (g_str_equal(key, "Immutable") == TRUE) {
 607                         dbus_message_iter_get_basic(&value, &data->immutable);
 608                 } else if (g_str_equal(key, "Host") == TRUE) {
 609                         dbus_message_iter_get_basic(&value, &str);
 610                         data->host = g_strdup(str);
 611                 } else if (g_str_equal(key, "Domain") == TRUE) {
 612                         dbus_message_iter_get_basic(&value, &str);
 613                         data->domain = g_strdup(str);
 614                 } else if (g_str_equal(key, "Nameservers") == TRUE) {
 615                         extract_nameservers(&value, data);
 616                 } else if (g_str_equal(key, "Index") == TRUE) {
 617                         dbus_message_iter_get_basic(&value, &data->index);
 618                 } else if (g_str_equal(key, "ServerRoutes") == TRUE) {
 619                         /* Ignored */
 620                 } else if (g_str_equal(key, "UserRoutes") == TRUE) {
 621                         /* Ignored */
 622                 } else {
 623                         if (dbus_message_iter_get_arg_type(&value) ==
 624                                                         DBUS_TYPE_STRING) {
 625                                 dbus_message_iter_get_basic(&value, &str);
 626                                 g_hash_table_replace(data->setting_strings,
 627                                                 g_strdup(key), g_strdup(str));
 628                         } else {
 629                                 DBG("unknown key %s", key);
 630                         }
 631                 }
 632
 633                 dbus_message_iter_next(properties);
 634         }
 635
 636         if (found == FALSE)
 637                 g_hash_table_insert(vpn_connections, g_strdup(data->ident),
 638                                                                         data);
 639
 640         err = create_provider(data, user_data);
 641         if (err < 0)
 642                 goto out;
 643
 644         resolv_host_addr(data);
 645
 646         if (data->nameservers != NULL)
 647                 connman_provider_set_nameservers(data->provider,
 648                                                 data->nameservers);
 649
 650         if (data->connect_pending == TRUE)
 651                 connect_provider(data, data->cb_data);
 652
 653         return;
 654
 655 out:
 656         DBG("removing %s", data->ident);
 657         g_hash_table_remove(vpn_connections, data->ident);
 658 }
 659
 660 static void get_connections_reply(DBusPendingCall *call, void *user_data)
 661 {
 662         DBusMessage *reply;
 663         DBusError error;
 664         DBusMessageIter array, dict;
 665         const char *signature = DBUS_TYPE_ARRAY_AS_STRING
 666                 DBUS_STRUCT_BEGIN_CHAR_AS_STRING
 667                 DBUS_TYPE_OBJECT_PATH_AS_STRING
 668                 DBUS_TYPE_ARRAY_AS_STRING
 669                 DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 670                 DBUS_TYPE_STRING_AS_STRING
 671                 DBUS_TYPE_VARIANT_AS_STRING
 672                 DBUS_DICT_ENTRY_END_CHAR_AS_STRING
 673                 DBUS_STRUCT_END_CHAR_AS_STRING;
 674
 675         if (dbus_pending_call_get_completed(call) == FALSE)
 676                 return;
 677
 678         DBG("");
 679
 680         reply = dbus_pending_call_steal_reply(call);
 681
 682         dbus_error_init(&error);
 683
 684         if (dbus_set_error_from_message(&error, reply) == TRUE) {
 685                 connman_error("%s", error.message);
 686                 dbus_error_free(&error);
 687                 goto done;
 688         }
 689
 690         if (dbus_message_has_signature(reply, signature) == FALSE) {
 691                 connman_error("vpnd signature \"%s\" does not match "
 692                                                         "expected \"%s\"",
 693                         dbus_message_get_signature(reply), signature);
 694                 goto done;
 695         }
 696
 697         if (dbus_message_iter_init(reply, &array) == FALSE)
 698                 goto done;
 699
 700         dbus_message_iter_recurse(&array, &dict);
 701
 702         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_STRUCT) {
 703                 DBusMessageIter value, properties;
 704                 const char *path;
 705
 706                 dbus_message_iter_recurse(&dict, &value);
 707                 dbus_message_iter_get_basic(&value, &path);
 708
 709                 dbus_message_iter_next(&value);
 710                 dbus_message_iter_recurse(&value, &properties);
 711
 712                 add_connection(path, &properties, user_data);
 713
 714                 dbus_message_iter_next(&dict);
 715         }
 716
 717 done:
 718         dbus_message_unref(reply);
 719
 720         dbus_pending_call_unref(call);
 721 }
 722
 723 static int get_connections(void *user_data)
 724 {
 725         DBusPendingCall *call;
 726         DBusMessage *message;
 727
 728         DBG("");
 729
 730         message = dbus_message_new_method_call(VPN_SERVICE, "/",
 731                                         VPN_MANAGER_INTERFACE,
 732                                         GET_CONNECTIONS);
 733         if (message == NULL)
 734                 return -ENOMEM;
 735
 736         if (dbus_connection_send_with_reply(connection, message,
 737                                         &call, DBUS_TIMEOUT) == FALSE) {
 738                 connman_error("Unable to call %s.%s()", VPN_MANAGER_INTERFACE,
 739                                                         GET_CONNECTIONS);
 740                 dbus_message_unref(message);
 741                 return -EINVAL;
 742         }
 743
 744         if (call == NULL) {
 745                 dbus_message_unref(message);
 746                 return -EINVAL;
 747         }
 748
 749         dbus_pending_call_set_notify(call, get_connections_reply,
 750                                                         user_data, NULL);
 751
 752         dbus_message_unref(message);
 753
 754         return -EINPROGRESS;
 755 }
 756
 757 static int provider_probe(struct connman_provider *provider)
 758 {
 759         return 0;
 760 }
 761
 762 static void remove_connection_reply(DBusPendingCall *call, void *user_data)
 763 {
 764         DBusMessage *reply;
 765         DBusError error;
 766
 767         if (dbus_pending_call_get_completed(call) == FALSE)
 768                 return;
 769
 770         DBG("");
 771
 772         reply = dbus_pending_call_steal_reply(call);
 773
 774         dbus_error_init(&error);
 775
 776         if (dbus_set_error_from_message(&error, reply) == TRUE) {
 777                 /*
 778                  * If the returned error is NotFound, it means that we
 779                  * have actually removed the provider in vpnd already.
 780                  */
 781                 if (dbus_error_has_name(&error, CONNMAN_ERROR_INTERFACE
 782                                                 ".NotFound") == FALSE)
 783                         connman_error("%s", error.message);
 784
 785                 dbus_error_free(&error);
 786         }
 787
 788         dbus_message_unref(reply);
 789
 790         dbus_pending_call_unref(call);
 791 }
 792
 793 static int provider_remove(struct connman_provider *provider)
 794 {
 795         DBusPendingCall *call;
 796         DBusMessage *message;
 797         struct connection_data *data;
 798
 799         data = connman_provider_get_data(provider);
 800
 801         DBG("provider %p data %p", provider, data);
 802
 803         if (data == NULL) {
 804                 /*
 805                  * This means the provider is already removed,
 806                  * just ignore the dbus in this case.
 807                  */
 808                 return -EALREADY;
 809         }
 810
 811         /*
 812          * When provider.c:provider_remove() calls this function,
 813          * it will remove the provider itself after the call.
 814          * This means that we cannot use the provider pointer later
 815          * as it is no longer valid.
 816          */
 817         data->provider = NULL;
 818
 819         message = dbus_message_new_method_call(VPN_SERVICE, "/",
 820                                         VPN_MANAGER_INTERFACE,
 821                                         VPN_REMOVE);
 822         if (message == NULL)
 823                 return -ENOMEM;
 824
 825         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &data->path,
 826                                 NULL);
 827
 828         if (dbus_connection_send_with_reply(connection, message,
 829                                         &call, DBUS_TIMEOUT) == FALSE) {
 830                 connman_error("Unable to call %s.%s()", VPN_MANAGER_INTERFACE,
 831                                                         VPN_REMOVE);
 832                 dbus_message_unref(message);
 833                 return -EINVAL;
 834         }
 835
 836         if (call == NULL) {
 837                 dbus_message_unref(message);
 838                 return -EINVAL;
 839         }
 840
 841         dbus_pending_call_set_notify(call, remove_connection_reply,
 842                                                         NULL, NULL);
 843
 844         dbus_message_unref(message);
 845
 846         return 0;
 847 }
 848
 849 static int provider_connect(struct connman_provider *provider)
 850 {
 851         struct connection_data *data;
 852
 853         data = connman_provider_get_data(provider);
 854         if (data == NULL)
 855                 return -EINVAL;
 856
 857         return connect_provider(data, NULL);
 858 }
 859
 860 static void disconnect_reply(DBusPendingCall *call, void *user_data)
 861 {
 862         DBusMessage *reply;
 863         DBusError error;
 864
 865         if (dbus_pending_call_get_completed(call) == FALSE)
 866                 return;
 867
 868         DBG("user %p", user_data);
 869
 870         reply = dbus_pending_call_steal_reply(call);
 871
 872         dbus_error_init(&error);
 873
 874         if (dbus_set_error_from_message(&error, reply) == TRUE) {
 875                 connman_error("%s", error.message);
 876                 dbus_error_free(&error);
 877                 goto done;
 878         }
 879
 880 done:
 881         dbus_message_unref(reply);
 882
 883         dbus_pending_call_unref(call);
 884 }
 885
 886 static int disconnect_provider(struct connection_data *data)
 887 {
 888         DBusPendingCall *call;
 889         DBusMessage *message;
 890
 891         DBG("data %p path %s", data, data->path);
 892
 893         message = dbus_message_new_method_call(VPN_SERVICE, data->path,
 894                                         VPN_CONNECTION_INTERFACE,
 895                                         VPN_DISCONNECT);
 896         if (message == NULL)
 897                 return -ENOMEM;
 898
 899         if (dbus_connection_send_with_reply(connection, message,
 900                                         &call, DBUS_TIMEOUT) == FALSE) {
 901                 connman_error("Unable to call %s.%s()",
 902                         VPN_CONNECTION_INTERFACE, VPN_DISCONNECT);
 903                 dbus_message_unref(message);
 904                 return -EINVAL;
 905         }
 906
 907         if (call == NULL) {
 908                 dbus_message_unref(message);
 909                 return -EINVAL;
 910         }
 911
 912         dbus_pending_call_set_notify(call, disconnect_reply, NULL, NULL);
 913
 914         dbus_message_unref(message);
 915
 916         connman_provider_set_state(data->provider,
 917                                         CONNMAN_PROVIDER_STATE_DISCONNECT);
 918         /*
 919          * We return 0 here instead of -EINPROGRESS because
 920          * __connman_service_disconnect() needs to return something
 921          * to gdbus so that gdbus will not call Disconnect() more
 922          * than once. This way we do not need to pass the dbus reply
 923          * message around the code.
 924          */
 925         return 0;
 926 }
 927
 928 static int provider_disconnect(struct connman_provider *provider)
 929 {
 930         struct connection_data *data;
 931
 932         DBG("provider %p", provider);
 933
 934         data = connman_provider_get_data(provider);
 935         if (data == NULL)
 936                 return -EINVAL;
 937
 938         if (g_str_equal(data->state, "ready") == TRUE ||
 939                         g_str_equal(data->state, "configuration") == TRUE)
 940                 return disconnect_provider(data);
 941
 942         return 0;
 943 }
 944
 945 static void configuration_create_reply(DBusPendingCall *call, void *user_data)
 946 {
 947         DBusMessage *reply;
 948         DBusError error;
 949         DBusMessageIter iter;
 950         const char *signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
 951         const char *path;
 952         char *ident;
 953         struct connection_data *data;
 954         struct config_create_data *cb_data = user_data;
 955
 956         if (dbus_pending_call_get_completed(call) == FALSE)
 957                 return;
 958
 959         DBG("user %p", cb_data);
 960
 961         reply = dbus_pending_call_steal_reply(call);
 962
 963         dbus_error_init(&error);
 964
 965         if (dbus_set_error_from_message(&error, reply) == TRUE) {
 966                 connman_error("dbus error: %s", error.message);
 967                 dbus_error_free(&error);
 968                 goto done;
 969         }
 970
 971         if (dbus_message_has_signature(reply, signature) == FALSE) {
 972                 connman_error("vpn configuration signature \"%s\" does not "
 973                                                 "match expected \"%s\"",
 974                         dbus_message_get_signature(reply), signature);
 975                 goto done;
 976         }
 977
 978         if (dbus_message_iter_init(reply, &iter) == FALSE)
 979                 goto done;
 980
 981         dbus_message_iter_get_basic(&iter, &path);
 982
 983         /*
 984          * Then try to connect the VPN as expected by ConnectProvider API
 985          */
 986         ident = get_ident(path);
 987
 988         data = g_hash_table_lookup(vpn_connections, ident);
 989         if (data == NULL) {
 990                 /*
 991                  * Someone removed the data. We cannot really continue.
 992                  */
 993                 DBG("Pending data not found for %s, cannot continue!", ident);
 994         } else {
 995                 data->call = NULL;
 996                 data->connect_pending = TRUE;
 997
 998                 if (data->cb_data == NULL)
 999                         data->cb_data = cb_data;
1000                 else
1001                         DBG("Connection callback data already in use!");
1002
1003                 /*
1004                  * Connection is created in add_connections() after
1005                  * we have received the ConnectionAdded signal.
1006                  */
1007
1008                 DBG("cb %p msg %p", data->cb_data,
1009                         data->cb_data ? data->cb_data->message : NULL);
1010         }
1011
1012 done:
1013         dbus_message_unref(reply);
1014
1015         dbus_pending_call_unref(call);
1016 }
1017
1018 static void set_dbus_ident(char *ident)
1019 {
1020         int i, len = strlen(ident);
1021
1022         for (i = 0; i < len; i++) {
1023                 if (ident[i] >= '0' && ident[i] <= '9')
1024                         continue;
1025                 if (ident[i] >= 'a' && ident[i] <= 'z')
1026                         continue;
1027                 if (ident[i] >= 'A' && ident[i] <= 'Z')
1028                         continue;
1029                 ident[i] = '_';
1030         }
1031 }
1032
1033 static struct vpn_route *parse_user_route(const char *user_route)
1034 {
1035         char *network, *netmask;
1036         struct vpn_route *route = NULL;
1037         int family = PF_UNSPEC;
1038         char **elems = g_strsplit(user_route, "/", 0);
1039
1040         if (elems == NULL)
1041                 return NULL;
1042
1043         network = elems[0];
1044         if (network == NULL || *network == '\0') {
1045                 DBG("no network/netmask set");
1046                 goto out;
1047         }
1048
1049         netmask = elems[1];
1050         if (netmask != NULL && *netmask == '\0') {
1051                 DBG("no netmask set");
1052                 goto out;
1053         }
1054
1055         if (g_strrstr(network, ":") != NULL)
1056                 family = AF_INET6;
1057         else if (g_strrstr(network, ".") != NULL) {
1058                 family = AF_INET;
1059
1060                 if (g_strrstr(netmask, ".") == NULL) {
1061                         /* We have netmask length */
1062                         in_addr_t addr;
1063                         struct in_addr netmask_in;
1064                         unsigned char prefix_len = 32;
1065
1066                         if (netmask != NULL) {
1067                                 char *ptr;
1068                                 long int value = strtol(netmask, &ptr, 10);
1069                                 if (ptr != netmask && *ptr == '\0' &&
1070                                                                 value <= 32)
1071                                         prefix_len = value;
1072                         }
1073
1074                         addr = 0xffffffff << (32 - prefix_len);
1075                         netmask_in.s_addr = htonl(addr);
1076                         netmask = inet_ntoa(netmask_in);
1077
1078                         DBG("network %s netmask %s", network, netmask);
1079                 }
1080         }
1081
1082         route = g_try_new(struct vpn_route, 1);
1083         if (route == NULL)
1084                 goto out;
1085
1086         route->network = g_strdup(network);
1087         route->netmask = g_strdup(netmask);
1088         route->gateway = NULL;
1089         route->family = family;
1090
1091 out:
1092         g_strfreev(elems);
1093         return route;
1094 }
1095
1096 static GSList *get_user_networks(DBusMessageIter *array)
1097 {
1098         DBusMessageIter entry;
1099         GSList *list = NULL;
1100
1101         dbus_message_iter_recurse(array, &entry);
1102
1103         while (dbus_message_iter_get_arg_type(&entry) == DBUS_TYPE_STRING) {
1104                 const char *val;
1105                 struct vpn_route *route;
1106
1107                 dbus_message_iter_get_basic(&entry, &val);
1108
1109                 route = parse_user_route(val);
1110                 if (route != NULL)
1111                         list = g_slist_prepend(list, route);
1112
1113                 dbus_message_iter_next(&entry);
1114         }
1115
1116         return list;
1117 }
1118
1119 static void append_route(DBusMessageIter *iter, void *user_data)
1120 {
1121         struct vpn_route *route = user_data;
1122         DBusMessageIter item;
1123         int family = 0;
1124
1125         connman_dbus_dict_open(iter, &item);
1126
1127         if (route == NULL)
1128                 goto empty_dict;
1129
1130         if (route->family == AF_INET)
1131                 family = 4;
1132         else if (route->family == AF_INET6)
1133                 family = 6;
1134
1135         if (family != 0)
1136                 connman_dbus_dict_append_basic(&item, "ProtocolFamily",
1137                                         DBUS_TYPE_INT32, &family);
1138
1139         if (route->network != NULL)
1140                 connman_dbus_dict_append_basic(&item, "Network",
1141                                         DBUS_TYPE_STRING, &route->network);
1142
1143         if (route->netmask != NULL)
1144                 connman_dbus_dict_append_basic(&item, "Netmask",
1145                                         DBUS_TYPE_STRING, &route->netmask);
1146
1147         if (route->gateway != NULL)
1148                 connman_dbus_dict_append_basic(&item, "Gateway",
1149                                         DBUS_TYPE_STRING, &route->gateway);
1150
1151 empty_dict:
1152         connman_dbus_dict_close(iter, &item);
1153 }
1154
1155 static void append_routes(DBusMessageIter *iter, void *user_data)
1156 {
1157         GSList *list, *routes = user_data;
1158
1159         DBG("routes %p", routes);
1160
1161         for (list = routes; list != NULL; list = g_slist_next(list)) {
1162                 DBusMessageIter dict;
1163                 struct vpn_route *route = list->data;
1164
1165                 dbus_message_iter_open_container(iter, DBUS_TYPE_STRUCT, NULL,
1166                                                 &dict);
1167                 append_route(&dict, route);
1168                 dbus_message_iter_close_container(iter, &dict);
1169         }
1170 }
1171
1172 static int create_configuration(DBusMessage *msg, connection_ready_cb callback)
1173 {
1174         DBusMessage *new_msg = NULL;
1175         DBusPendingCall *call;
1176         DBusMessageIter iter, array, new_iter, new_dict;
1177         const char *type = NULL, *name = NULL;
1178         const char *host = NULL, *domain = NULL;
1179         char *ident, *me = NULL;
1180         int err = 0;
1181         dbus_bool_t result;
1182         struct connection_data *data;
1183         struct config_create_data *user_data = NULL;
1184         GSList *networks = NULL;
1185
1186         /*
1187          * We copy the old message data into new message. We cannot
1188          * just use the old message as is because the user route
1189          * information is not in the same format in vpnd.
1190          */
1191         new_msg = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_CALL);
1192         dbus_message_iter_init_append(new_msg, &new_iter);
1193         connman_dbus_dict_open(&new_iter, &new_dict);
1194
1195         dbus_message_iter_init(msg, &iter);
1196         dbus_message_iter_recurse(&iter, &array);
1197
1198         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1199                 DBusMessageIter entry, value;
1200                 void *item_value;
1201                 const char *key;
1202                 int value_type;
1203
1204                 dbus_message_iter_recurse(&array, &entry);
1205                 dbus_message_iter_get_basic(&entry, &key);
1206
1207                 dbus_message_iter_next(&entry);
1208                 dbus_message_iter_recurse(&entry, &value);
1209
1210                 value_type = dbus_message_iter_get_arg_type(&value);
1211                 item_value = NULL;
1212
1213                 switch (value_type) {
1214                 case DBUS_TYPE_STRING:
1215                         dbus_message_iter_get_basic(&value, &item_value);
1216
1217                         if (g_str_equal(key, "Type") == TRUE) {
1218                                 type = (const char *)item_value;
1219                         } else if (g_str_equal(key, "Name") == TRUE) {
1220                                 name = (const char *)item_value;
1221                         } else if (g_str_equal(key, "Host") == TRUE) {
1222                                 host = (const char *)item_value;
1223                         } else if (g_str_equal(key, "VPN.Domain") == TRUE) {
1224                                 domain = (const char *)item_value;
1225                         }
1226
1227                         DBG("%s %s", key, (char *)item_value);
1228
1229                         if (item_value != NULL)
1230                                 connman_dbus_dict_append_basic(&new_dict, key,
1231                                                 value_type, &item_value);
1232                         break;
1233                 case DBUS_TYPE_ARRAY:
1234                         if (g_str_equal(key, "Networks") == TRUE) {
1235                                 networks = get_user_networks(&value);
1236                                 connman_dbus_dict_append_array(&new_dict,
1237                                                         "UserRoutes",
1238                                                         DBUS_TYPE_DICT_ENTRY,
1239                                                         append_routes,
1240                                                         networks);
1241                         }
1242                         break;
1243                 }
1244
1245                 dbus_message_iter_next(&array);
1246         }
1247
1248         connman_dbus_dict_close(&new_iter, &new_dict);
1249
1250         DBG("VPN type %s name %s host %s domain %s networks %p",
1251                 type, name, host, domain, networks);
1252
1253         if (host == NULL || domain == NULL) {
1254                 err = -EINVAL;
1255                 goto done;
1256         }
1257
1258         if (type == NULL || name == NULL) {
1259                 err = -EOPNOTSUPP;
1260                 goto done;
1261         }
1262
1263         ident = g_strdup_printf("%s_%s", host, domain);
1264         set_dbus_ident(ident);
1265
1266         DBG("ident %s", ident);
1267
1268         data = g_hash_table_lookup(vpn_connections, ident);
1269         if (data != NULL) {
1270                 if (data->call != NULL || data->cb_data != NULL) {
1271                         DBG("create configuration call already pending");
1272                         err = -EINPROGRESS;
1273                         goto done;
1274                 }
1275         } else {
1276                 char *path = g_strdup_printf("%s/connection/%s", VPN_PATH,
1277                                                                 ident);
1278                 data = create_connection_data(path);
1279                 g_free(path);
1280
1281                 if (data == NULL) {
1282                         err = -ENOMEM;
1283                         goto done;
1284                 }
1285
1286                 g_hash_table_insert(vpn_connections, g_strdup(ident), data);
1287         }
1288
1289         /*
1290          * User called net.connman.Manager.ConnectProvider if we are here.
1291          * So use the data from original message in the new msg.
1292          */
1293         me = g_strdup(dbus_message_get_destination(msg));
1294
1295         dbus_message_set_interface(new_msg, VPN_MANAGER_INTERFACE);
1296         dbus_message_set_path(new_msg, "/");
1297         dbus_message_set_destination(new_msg, VPN_SERVICE);
1298         dbus_message_set_sender(new_msg, me);
1299         dbus_message_set_member(new_msg, "Create");
1300
1301         user_data = g_try_new0(struct config_create_data, 1);
1302         if (user_data == NULL) {
1303                 err = -ENOMEM;
1304                 goto done;
1305         }
1306
1307         user_data->callback = callback;
1308         user_data->message = dbus_message_ref(msg);
1309         user_data->path = NULL;
1310
1311         DBG("cb %p msg %p", user_data, msg);
1312
1313         result = dbus_connection_send_with_reply(connection, new_msg,
1314                                                 &call, DBUS_TIMEOUT);
1315         if (result == FALSE || call == NULL) {
1316                 err = -EIO;
1317                 goto done;
1318         }
1319
1320         dbus_pending_call_set_notify(call, configuration_create_reply,
1321                                                         user_data, NULL);
1322         data->call = call;
1323
1324 done:
1325         if (new_msg != NULL)
1326                 dbus_message_unref(new_msg);
1327
1328         if (networks != NULL)
1329                 g_slist_free_full(networks, destroy_route);
1330
1331         g_free(me);
1332         return err;
1333 }
1334
1335 static connman_bool_t check_host(char **hosts, char *host)
1336 {
1337         int i;
1338
1339         if (hosts == NULL)
1340                 return FALSE;
1341
1342         for (i = 0; hosts[i] != NULL; i++) {
1343                 if (g_strcmp0(hosts[i], host) == 0)
1344                         return TRUE;
1345         }
1346
1347         return FALSE;
1348 }
1349
1350 static void set_route(struct connection_data *data, struct vpn_route *route)
1351 {
1352         /*
1353          * If the VPN administrator/user has given a route to
1354          * VPN server, then we must discard that because the
1355          * server cannot be contacted via VPN tunnel.
1356          */
1357         if (check_host(data->host_ip, route->network) == TRUE) {
1358                 DBG("Discarding VPN route to %s via %s at index %d",
1359                         route->network, route->gateway, data->index);
1360                 return;
1361         }
1362
1363         if (route->family == AF_INET6) {
1364                 unsigned char prefix_len = atoi(route->netmask);
1365
1366                 connman_inet_add_ipv6_network_route(data->index,
1367                                                         route->network,
1368                                                         route->gateway,
1369                                                         prefix_len);
1370         } else {
1371                 connman_inet_add_network_route(data->index, route->network,
1372                                                 route->gateway,
1373                                                 route->netmask);
1374         }
1375 }
1376
1377 static int set_routes(struct connman_provider *provider,
1378                                 enum connman_provider_route_type type)
1379 {
1380         struct connection_data *data;
1381         GHashTableIter iter;
1382         gpointer value, key;
1383
1384         DBG("provider %p", provider);
1385
1386         data = connman_provider_get_data(provider);
1387         if (data == NULL)
1388                 return -EINVAL;
1389
1390         if (type == CONNMAN_PROVIDER_ROUTE_ALL ||
1391                                         type == CONNMAN_PROVIDER_ROUTE_USER) {
1392                 g_hash_table_iter_init(&iter, data->user_routes);
1393
1394                 while (g_hash_table_iter_next(&iter, &key, &value) == TRUE)
1395                         set_route(data, value);
1396         }
1397
1398         if (type == CONNMAN_PROVIDER_ROUTE_ALL ||
1399                                 type == CONNMAN_PROVIDER_ROUTE_SERVER) {
1400                 g_hash_table_iter_init(&iter, data->server_routes);
1401
1402                 while (g_hash_table_iter_next(&iter, &key, &value) == TRUE)
1403                         set_route(data, value);
1404         }
1405
1406         return 0;
1407 }
1408
1409 static connman_bool_t check_routes(struct connman_provider *provider)
1410 {
1411         struct connection_data *data;
1412
1413         DBG("provider %p", provider);
1414
1415         data = connman_provider_get_data(provider);
1416         if (data == NULL)
1417                 return FALSE;
1418
1419         if (data->user_routes != NULL &&
1420                         g_hash_table_size(data->user_routes) > 0)
1421                 return TRUE;
1422
1423         if (data->server_routes != NULL &&
1424                         g_hash_table_size(data->server_routes) > 0)
1425                 return TRUE;
1426
1427         return FALSE;
1428 }
1429
1430 static struct connman_provider_driver provider_driver = {
1431         .name = "VPN",
1432         .type = CONNMAN_PROVIDER_TYPE_VPN,
1433         .probe = provider_probe,
1434         .remove = provider_remove,
1435         .connect = provider_connect,
1436         .disconnect = provider_disconnect,
1437         .set_property = set_string,
1438         .get_property = get_string,
1439         .create = create_configuration,
1440         .set_routes = set_routes,
1441         .check_routes = check_routes,
1442 };
1443
1444 static void destroy_provider(struct connection_data *data)
1445 {
1446         DBG("data %p", data);
1447
1448         if (g_str_equal(data->state, "ready") == TRUE ||
1449                         g_str_equal(data->state, "configuration") == TRUE)
1450                 connman_provider_disconnect(data->provider);
1451
1452         if (data->call != NULL)
1453                 dbus_pending_call_cancel(data->call);
1454
1455         connman_provider_set_data(data->provider, NULL);
1456
1457         connman_provider_remove(data->provider);
1458
1459         data->provider = NULL;
1460 }
1461
1462 static void connection_destroy(gpointer hash_data)
1463 {
1464         struct connection_data *data = hash_data;
1465
1466         DBG("data %p", data);
1467
1468         if (data->provider != NULL)
1469                 destroy_provider(data);
1470
1471         g_free(data->path);
1472         g_free(data->ident);
1473         g_free(data->state);
1474         g_free(data->type);
1475         g_free(data->name);
1476         g_free(data->host);
1477         g_free(data->domain);
1478         g_hash_table_destroy(data->server_routes);
1479         g_hash_table_destroy(data->user_routes);
1480         g_strfreev(data->nameservers);
1481         g_hash_table_destroy(data->setting_strings);
1482         connman_ipaddress_free(data->ip);
1483
1484         cancel_host_resolv(data);
1485
1486         g_free(data);
1487 }
1488
1489 static void vpnd_created(DBusConnection *conn, void *user_data)
1490 {
1491         DBG("connection %p", conn);
1492
1493         get_connections(user_data);
1494 }
1495
1496 static void vpnd_removed(DBusConnection *conn, void *user_data)
1497 {
1498         DBG("connection %p", conn);
1499
1500         g_hash_table_remove_all(vpn_connections);
1501 }
1502
1503 static void remove_connection(DBusConnection *conn, const char *path)
1504 {
1505         DBG("path %s", path);
1506
1507         g_hash_table_remove(vpn_connections, get_ident(path));
1508 }
1509
1510 static gboolean connection_removed(DBusConnection *conn, DBusMessage *message,
1511                                 void *user_data)
1512 {
1513         const char *path;
1514         const char *signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
1515         struct connection_data *data;
1516
1517         if (dbus_message_has_signature(message, signature) == FALSE) {
1518                 connman_error("vpn removed signature \"%s\" does not match "
1519                                                         "expected \"%s\"",
1520                         dbus_message_get_signature(message), signature);
1521                 return TRUE;
1522         }
1523
1524         dbus_message_get_args(message, NULL, DBUS_TYPE_OBJECT_PATH, &path,
1525                                 DBUS_TYPE_INVALID);
1526
1527         data = g_hash_table_lookup(vpn_connections, get_ident(path));
1528         if (data != NULL)
1529                 remove_connection(conn, path);
1530
1531         return TRUE;
1532 }
1533
1534 static gboolean connection_added(DBusConnection *conn, DBusMessage *message,
1535                                 void *user_data)
1536 {
1537         DBusMessageIter iter, properties;
1538         const char *path;
1539         const char *signature = DBUS_TYPE_OBJECT_PATH_AS_STRING
1540                 DBUS_TYPE_ARRAY_AS_STRING
1541                 DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
1542                 DBUS_TYPE_STRING_AS_STRING
1543                 DBUS_TYPE_VARIANT_AS_STRING
1544                 DBUS_DICT_ENTRY_END_CHAR_AS_STRING;
1545
1546         if (dbus_message_has_signature(message, signature) == FALSE) {
1547                 connman_error("vpn ConnectionAdded signature \"%s\" does not "
1548                                                 "match expected \"%s\"",
1549                         dbus_message_get_signature(message), signature);
1550                 return TRUE;
1551         }
1552
1553         DBG("");
1554
1555         if (dbus_message_iter_init(message, &iter) == FALSE)
1556                 return TRUE;
1557
1558         dbus_message_iter_get_basic(&iter, &path);
1559
1560         dbus_message_iter_next(&iter);
1561         dbus_message_iter_recurse(&iter, &properties);
1562
1563         add_connection(path, &properties, user_data);
1564
1565         return TRUE;
1566 }
1567
1568 static int save_route(GHashTable *routes, int family, const char *network,
1569                         const char *netmask, const char *gateway)
1570 {
1571         struct vpn_route *route;
1572         char *key = g_strdup_printf("%d/%s/%s", family, network, netmask);
1573
1574         DBG("family %d network %s netmask %s", family, network, netmask);
1575
1576         route = g_hash_table_lookup(routes, key);
1577         if (route == NULL) {
1578                 route = g_try_new0(struct vpn_route, 1);
1579                 if (route == NULL) {
1580                         connman_error("out of memory");
1581                         return -ENOMEM;
1582                 }
1583
1584                 route->family = family;
1585                 route->network = g_strdup(network);
1586                 route->netmask = g_strdup(netmask);
1587                 route->gateway = g_strdup(gateway);
1588
1589                 g_hash_table_replace(routes, key, route);
1590         } else
1591                 g_free(key);
1592
1593         return 0;
1594 }
1595
1596 static int read_route_dict(GHashTable *routes, DBusMessageIter *dicts)
1597 {
1598         DBusMessageIter dict;
1599         const char *network, *netmask, *gateway;
1600         int family;
1601
1602         dbus_message_iter_recurse(dicts, &dict);
1603
1604         network = netmask = gateway = NULL;
1605         family = PF_UNSPEC;
1606
1607         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1608
1609                 DBusMessageIter entry, value;
1610                 const char *key;
1611
1612                 dbus_message_iter_recurse(&dict, &entry);
1613                 dbus_message_iter_get_basic(&entry, &key);
1614
1615                 dbus_message_iter_next(&entry);
1616                 dbus_message_iter_recurse(&entry, &value);
1617
1618                 if (g_str_equal(key, "ProtocolFamily") == TRUE) {
1619                         int pf;
1620                         dbus_message_iter_get_basic(&value, &pf);
1621                         switch (pf) {
1622                         case 4:
1623                                 family = AF_INET;
1624                                 break;
1625                         case 6:
1626                                 family = AF_INET6;
1627                                 break;
1628                         }
1629                         DBG("family %d", family);
1630                 } else if (g_str_equal(key, "Netmask") == TRUE) {
1631                         dbus_message_iter_get_basic(&value, &netmask);
1632                         DBG("netmask %s", netmask);
1633                 } else if (g_str_equal(key, "Network") == TRUE) {
1634                         dbus_message_iter_get_basic(&value, &network);
1635                         DBG("host %s", network);
1636                 } else if (g_str_equal(key, "Gateway") == TRUE) {
1637                         dbus_message_iter_get_basic(&value, &gateway);
1638                         DBG("gateway %s", gateway);
1639                 }
1640
1641                 dbus_message_iter_next(&dict);
1642         }
1643
1644         if (netmask == NULL || network == NULL || gateway == NULL) {
1645                 DBG("Value missing.");
1646                 return -EINVAL;
1647         }
1648
1649         return save_route(routes, family, network, netmask, gateway);
1650 }
1651
1652 static int routes_changed(DBusMessageIter *array, GHashTable *routes)
1653 {
1654         DBusMessageIter entry;
1655         int ret = -EINVAL;
1656
1657         if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY) {
1658                 DBG("Expecting array, ignoring routes.");
1659                 return -EINVAL;
1660         }
1661
1662         while (dbus_message_iter_get_arg_type(array) == DBUS_TYPE_ARRAY) {
1663
1664                 dbus_message_iter_recurse(array, &entry);
1665
1666                 while (dbus_message_iter_get_arg_type(&entry) ==
1667                                                         DBUS_TYPE_STRUCT) {
1668                         DBusMessageIter dicts;
1669
1670                         dbus_message_iter_recurse(&entry, &dicts);
1671
1672                         while (dbus_message_iter_get_arg_type(&dicts) ==
1673                                                         DBUS_TYPE_ARRAY) {
1674                                 int err = read_route_dict(routes, &dicts);
1675                                 if (ret != 0)
1676                                         ret = err;
1677                                 dbus_message_iter_next(&dicts);
1678                         }
1679
1680                         dbus_message_iter_next(&entry);
1681                 }
1682
1683                 dbus_message_iter_next(array);
1684         }
1685
1686         return ret;
1687 }
1688
1689 static gboolean property_changed(DBusConnection *conn,
1690                                 DBusMessage *message,
1691                                 void *user_data)
1692 {
1693         const char *path = dbus_message_get_path(message);
1694         struct connection_data *data = NULL;
1695         DBusMessageIter iter, value;
1696         connman_bool_t ip_set = FALSE;
1697         int err;
1698         char *str;
1699         const char *key;
1700         const char *signature = DBUS_TYPE_STRING_AS_STRING
1701                 DBUS_TYPE_VARIANT_AS_STRING;
1702
1703         if (dbus_message_has_signature(message, signature) == FALSE) {
1704                 connman_error("vpn property signature \"%s\" does not match "
1705                                                         "expected \"%s\"",
1706                         dbus_message_get_signature(message), signature);
1707                 return TRUE;
1708         }
1709
1710         data = g_hash_table_lookup(vpn_connections, get_ident(path));
1711         if (data == NULL)
1712                 return TRUE;
1713
1714         if (dbus_message_iter_init(message, &iter) == FALSE)
1715                 return TRUE;
1716
1717         dbus_message_iter_get_basic(&iter, &key);
1718
1719         dbus_message_iter_next(&iter);
1720         dbus_message_iter_recurse(&iter, &value);
1721
1722         DBG("key %s", key);
1723
1724         if (g_str_equal(key, "State") == TRUE) {
1725                 dbus_message_iter_get_basic(&value, &str);
1726
1727                 DBG("%s %s -> %s", data->path, data->state, str);
1728
1729                 if (g_str_equal(data->state, str) == TRUE)
1730                         return TRUE;
1731
1732                 g_free(data->state);
1733                 data->state = g_strdup(str);
1734
1735                 set_provider_state(data);
1736         } else if (g_str_equal(key, "Index") == TRUE) {
1737                 dbus_message_iter_get_basic(&value, &data->index);
1738                 connman_provider_set_index(data->provider, data->index);
1739         } else if (g_str_equal(key, "IPv4") == TRUE) {
1740                 err = extract_ip(&value, AF_INET, data);
1741                 ip_set = TRUE;
1742         } else if (g_str_equal(key, "IPv6") == TRUE) {
1743                 err = extract_ip(&value, AF_INET6, data);
1744                 ip_set = TRUE;
1745         } else if (g_str_equal(key, "ServerRoutes") == TRUE) {
1746                 err = routes_changed(&value, data->server_routes);
1747                 /*
1748                  * Note that the vpnd will delay the route sending a bit
1749                  * (in order to collect the routes from VPN client),
1750                  * so we might have got the State changed property before
1751                  * we got ServerRoutes. This means that we must try to set
1752                  * the routes here because they would be left unset otherwise.
1753                  */
1754                 if (err == 0)
1755                         set_routes(data->provider,
1756                                                 CONNMAN_PROVIDER_ROUTE_SERVER);
1757         } else if (g_str_equal(key, "UserRoutes") == TRUE) {
1758                 err = routes_changed(&value, data->user_routes);
1759                 if (err == 0)
1760                         set_routes(data->provider,
1761                                                 CONNMAN_PROVIDER_ROUTE_USER);
1762         } else if (g_str_equal(key, "Nameservers") == TRUE) {
1763                 if (extract_nameservers(&value, data) == 0 &&
1764                                                 data->nameservers != NULL)
1765                         connman_provider_set_nameservers(data->provider,
1766                                                         data->nameservers);
1767         }
1768
1769         if (ip_set == TRUE && err == 0) {
1770                 err = connman_provider_set_ipaddress(data->provider, data->ip);
1771                 if (err < 0)
1772                         DBG("setting provider IP address failed (%s/%d)",
1773                                 strerror(-err), -err);
1774         }
1775
1776         return TRUE;
1777 }
1778
1779 static int vpn_init(void)
1780 {
1781         int err;
1782
1783         connection = connman_dbus_get_connection();
1784         if (connection == NULL)
1785                 return -EIO;
1786
1787         watch = g_dbus_add_service_watch(connection, VPN_SERVICE,
1788                         vpnd_created, vpnd_removed, &provider_driver, NULL);
1789
1790         added_watch = g_dbus_add_signal_watch(connection, VPN_SERVICE, NULL,
1791                                         VPN_MANAGER_INTERFACE,
1792                                         CONNECTION_ADDED, connection_added,
1793                                         &provider_driver, NULL);
1794
1795         removed_watch = g_dbus_add_signal_watch(connection, VPN_SERVICE, NULL,
1796                                         VPN_MANAGER_INTERFACE,
1797                                         CONNECTION_REMOVED, connection_removed,
1798                                         NULL, NULL);
1799
1800         property_watch = g_dbus_add_signal_watch(connection, VPN_SERVICE, NULL,
1801                                         VPN_CONNECTION_INTERFACE,
1802                                         PROPERTY_CHANGED, property_changed,
1803                                         NULL, NULL);
1804
1805         if (added_watch == 0 || removed_watch == 0 || property_watch == 0) {
1806                 err = -EIO;
1807                 goto remove;
1808         }
1809
1810         err = connman_provider_driver_register(&provider_driver);
1811         if (err == 0) {
1812                 vpn_connections = g_hash_table_new_full(g_str_hash,
1813                                                 g_str_equal,
1814                                                 g_free, connection_destroy);
1815
1816                 vpnd_created(connection, &provider_driver);
1817         }
1818
1819         return err;
1820
1821 remove:
1822         g_dbus_remove_watch(connection, watch);
1823         g_dbus_remove_watch(connection, added_watch);
1824         g_dbus_remove_watch(connection, removed_watch);
1825         g_dbus_remove_watch(connection, property_watch);
1826
1827         dbus_connection_unref(connection);
1828
1829         return err;
1830 }
1831
1832 static void vpn_exit(void)
1833 {
1834         g_dbus_remove_watch(connection, watch);
1835         g_dbus_remove_watch(connection, added_watch);
1836         g_dbus_remove_watch(connection, removed_watch);
1837         g_dbus_remove_watch(connection, property_watch);
1838
1839         connman_provider_driver_unregister(&provider_driver);
1840
1841         if (vpn_connections != NULL)
1842                 g_hash_table_destroy(vpn_connections);
1843
1844         dbus_connection_unref(connection);
1845 }
1846
1847 CONNMAN_PLUGIN_DEFINE(vpn, "VPN plugin", VERSION,
1848                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, vpn_init, vpn_exit)