src/connection.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2011  BMW Car IT GmbH. All rights reserved.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <net/if.h>
  30
  31 #include <gdbus.h>
  32
  33 #include "connman.h"
  34
  35 struct gateway_config {
  36         gboolean active;
  37         char *gateway;
  38
  39         /* VPN extra data */
  40         gboolean vpn;
  41         char *vpn_ip;
  42         int vpn_phy_index;
  43         char *vpn_phy_ip;
  44 };
  45
  46 struct gateway_data {
  47         int index;
  48         struct connman_service *service;
  49         unsigned int order;
  50         struct gateway_config *ipv4_gateway;
  51         struct gateway_config *ipv6_gateway;
  52 };
  53
  54 static GHashTable *gateway_hash = NULL;
  55
  56 static struct gateway_config *find_gateway(int index, const char *gateway)
  57 {
  58         GHashTableIter iter;
  59         gpointer value, key;
  60
  61         if (gateway == NULL)
  62                 return NULL;
  63
  64         g_hash_table_iter_init(&iter, gateway_hash);
  65
  66         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
  67                 struct gateway_data *data = value;
  68
  69                 if (data->ipv4_gateway != NULL && data->index == index &&
  70                                 g_str_equal(data->ipv4_gateway->gateway,
  71                                         gateway) == TRUE)
  72                         return data->ipv4_gateway;
  73
  74                 if (data->ipv6_gateway != NULL && data->index == index &&
  75                                 g_str_equal(data->ipv6_gateway->gateway,
  76                                         gateway) == TRUE)
  77                         return data->ipv6_gateway;
  78         }
  79
  80         return NULL;
  81 }
  82
  83 static int del_routes(struct gateway_data *data,
  84                         enum connman_ipconfig_type type)
  85 {
  86         int status4 = 0, status6 = 0;
  87         int do_ipv4 = FALSE, do_ipv6 = FALSE;
  88
  89         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
  90                 do_ipv4 = TRUE;
  91         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
  92                 do_ipv6 = TRUE;
  93         else
  94                 do_ipv4 = do_ipv6 = TRUE;
  95
  96         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL) {
  97                 if (data->ipv4_gateway->vpn == TRUE) {
  98                         if (data->ipv4_gateway->vpn_phy_index >= 0)
  99                                 connman_inet_del_host_route(
 100                                         data->ipv4_gateway->vpn_phy_index,
 101                                         data->ipv4_gateway->gateway);
 102
 103                         status4 = connman_inet_clear_gateway_address(
 104                                                 data->index,
 105                                                 data->ipv4_gateway->vpn_ip);
 106
 107                 } else if (g_strcmp0(data->ipv4_gateway->gateway,
 108                                                         "0.0.0.0") == 0) {
 109                         status4 = connman_inet_clear_gateway_interface(
 110                                                                 data->index);
 111                 } else {
 112                         connman_inet_del_host_route(data->index,
 113                                                 data->ipv4_gateway->gateway);
 114                         status4 = connman_inet_clear_gateway_address(
 115                                                 data->index,
 116                                                 data->ipv4_gateway->gateway);
 117                 }
 118         }
 119
 120         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL) {
 121                 if (data->ipv6_gateway->vpn == TRUE) {
 122                         if (data->ipv6_gateway->vpn_phy_index >= 0)
 123                                 connman_inet_del_host_route(
 124                                         data->ipv6_gateway->vpn_phy_index,
 125                                         data->ipv6_gateway->gateway);
 126
 127                         status6 = connman_inet_clear_ipv6_gateway_address(
 128                                                 data->index,
 129                                                 data->ipv6_gateway->vpn_ip);
 130
 131                 } else if (g_strcmp0(data->ipv6_gateway->gateway, "::") == 0) {
 132                         status6 = connman_inet_clear_ipv6_gateway_interface(
 133                                                                 data->index);
 134                 } else {
 135                         connman_inet_del_ipv6_host_route(data->index,
 136                                                 data->ipv6_gateway->gateway);
 137                         status6 = connman_inet_clear_ipv6_gateway_address(
 138                                                 data->index,
 139                                                 data->ipv6_gateway->gateway);
 140                 }
 141         }
 142
 143         return (status4 < 0 ? status4 : status6);
 144 }
 145
 146 static int disable_gateway(struct gateway_data *data,
 147                         enum connman_ipconfig_type type)
 148 {
 149         gboolean active = FALSE;
 150
 151         if (type == CONNMAN_IPCONFIG_TYPE_IPV4) {
 152                 if (data->ipv4_gateway != NULL)
 153                         active = data->ipv4_gateway->active;
 154         } else if (type == CONNMAN_IPCONFIG_TYPE_IPV6) {
 155                 if (data->ipv6_gateway != NULL)
 156                         active = data->ipv6_gateway->active;
 157         } else
 158                 active = TRUE;
 159
 160         DBG("type %d active %d", type, active);
 161
 162         if (active == TRUE)
 163                 return del_routes(data, type);
 164
 165         return 0;
 166 }
 167
 168 static struct gateway_data *add_gateway(struct connman_service *service,
 169                                         int index, const char *gateway,
 170                                         enum connman_ipconfig_type type)
 171 {
 172         struct gateway_data *data, *old;
 173         struct gateway_config *config;
 174
 175         if (gateway == NULL || strlen(gateway) == 0)
 176                 return NULL;
 177
 178         data = g_try_new0(struct gateway_data, 1);
 179         if (data == NULL)
 180                 return NULL;
 181
 182         data->index = index;
 183
 184         config = g_try_new0(struct gateway_config, 1);
 185         if (config == NULL) {
 186                 g_free(data);
 187                 return NULL;
 188         }
 189
 190         config->gateway = g_strdup(gateway);
 191         config->vpn_ip = NULL;
 192         config->vpn_phy_ip = NULL;
 193         config->vpn = FALSE;
 194         config->vpn_phy_index = -1;
 195         config->active = FALSE;
 196
 197         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
 198                 data->ipv4_gateway = config;
 199         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
 200                 data->ipv6_gateway = config;
 201         else {
 202                 g_free(config->gateway);
 203                 g_free(config);
 204                 g_free(data);
 205                 return NULL;
 206         }
 207
 208         data->service = service;
 209
 210         data->order = __connman_service_get_order(service);
 211
 212         /*
 213          * If the service is already in the hash, then we
 214          * must not replace it blindly but disable the gateway
 215          * of the type we are replacing and take the other type
 216          * from old gateway settings.
 217          */
 218         old = g_hash_table_lookup(gateway_hash, service);
 219         if (old != NULL) {
 220                 DBG("Replacing gw %p ipv4 %p ipv6 %p", old,
 221                         old->ipv4_gateway, old->ipv6_gateway);
 222                 disable_gateway(old, type);
 223                 if (type == CONNMAN_IPCONFIG_TYPE_IPV4) {
 224                         data->ipv6_gateway = old->ipv6_gateway;
 225                         old->ipv6_gateway = NULL;
 226                 } else if (type == CONNMAN_IPCONFIG_TYPE_IPV6) {
 227                         data->ipv4_gateway = old->ipv4_gateway;
 228                         old->ipv4_gateway = NULL;
 229                 }
 230         } else {
 231                 /*
 232                  * Only take a ref if we are adding new stuff to hash.
 233                  */
 234                 connman_service_ref(service);
 235         }
 236
 237         g_hash_table_replace(gateway_hash, service, data);
 238
 239         return data;
 240 }
 241
 242 static void connection_newgateway(int index, const char *gateway)
 243 {
 244         struct gateway_config *config;
 245
 246         DBG("index %d gateway %s", index, gateway);
 247
 248         config = find_gateway(index, gateway);
 249         if (config == NULL)
 250                 return;
 251
 252         config->active = TRUE;
 253 }
 254
 255 static void set_default_gateway(struct gateway_data *data,
 256                                 enum connman_ipconfig_type type)
 257 {
 258         int index;
 259         int status4 = 0, status6 = 0;
 260         int do_ipv4 = FALSE, do_ipv6 = FALSE;
 261
 262         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
 263                 do_ipv4 = TRUE;
 264         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
 265                 do_ipv6 = TRUE;
 266         else
 267                 do_ipv4 = do_ipv6 = TRUE;
 268
 269         DBG("type %d gateway ipv4 %p ipv6 %p", type, data->ipv4_gateway,
 270                                                 data->ipv6_gateway);
 271
 272         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL &&
 273                                         data->ipv4_gateway->vpn == TRUE) {
 274                 connman_inet_set_gateway_address(data->index,
 275                                                 data->ipv4_gateway->vpn_ip);
 276                 connman_inet_add_host_route(data->ipv4_gateway->vpn_phy_index,
 277                                         data->ipv4_gateway->vpn_ip,
 278                                         data->ipv4_gateway->vpn_phy_ip);
 279                 data->ipv4_gateway->active = TRUE;
 280
 281                 DBG("set %p index %d vpn %s index %d phy %s",
 282                         data, data->index, data->ipv4_gateway->vpn_ip,
 283                         data->ipv4_gateway->vpn_phy_index,
 284                         data->ipv4_gateway->vpn_phy_ip);
 285
 286                 __connman_service_indicate_default(data->service);
 287
 288                 return;
 289         }
 290
 291         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL &&
 292                                         data->ipv6_gateway->vpn == TRUE) {
 293                 connman_inet_set_ipv6_gateway_address(data->index,
 294                                                 data->ipv6_gateway->vpn_ip);
 295                 connman_inet_add_ipv6_host_route(
 296                                         data->ipv6_gateway->vpn_phy_index,
 297                                         data->ipv6_gateway->vpn_ip,
 298                                         data->ipv6_gateway->vpn_phy_ip);
 299                 data->ipv6_gateway->active = TRUE;
 300
 301                 DBG("set %p index %d vpn %s index %d phy %s",
 302                         data, data->index, data->ipv6_gateway->vpn_ip,
 303                         data->ipv6_gateway->vpn_phy_index,
 304                         data->ipv6_gateway->vpn_phy_ip);
 305
 306                 __connman_service_indicate_default(data->service);
 307
 308                 return;
 309         }
 310
 311         index = __connman_service_get_index(data->service);
 312
 313         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL &&
 314                         g_strcmp0(data->ipv4_gateway->gateway,
 315                                                         "0.0.0.0") == 0) {
 316                 if (connman_inet_set_gateway_interface(index) < 0)
 317                         return;
 318                 goto done;
 319         }
 320
 321         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL &&
 322                         g_strcmp0(data->ipv6_gateway->gateway,
 323                                                         "::") == 0) {
 324                 if (connman_inet_set_ipv6_gateway_interface(index) < 0)
 325                         return;
 326                 goto done;
 327         }
 328
 329         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL)
 330                 status6 = connman_inet_set_ipv6_gateway_address(index,
 331                                                 data->ipv6_gateway->gateway);
 332
 333         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL)
 334                 status4 = connman_inet_set_gateway_address(index,
 335                                                 data->ipv4_gateway->gateway);
 336
 337         if (status4 < 0 || status6 < 0)
 338                 return;
 339
 340 done:
 341         __connman_service_indicate_default(data->service);
 342 }
 343
 344 static void unset_default_gateway(struct gateway_data *data,
 345                                 enum connman_ipconfig_type type)
 346 {
 347         int index;
 348         int do_ipv4 = FALSE, do_ipv6 = FALSE;
 349
 350         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
 351                 do_ipv4 = TRUE;
 352         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
 353                 do_ipv6 = TRUE;
 354         else
 355                 do_ipv4 = do_ipv6 = TRUE;
 356
 357         DBG("type %d gateway ipv4 %p ipv6 %p", type, data->ipv4_gateway,
 358                                                 data->ipv6_gateway);
 359
 360         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL &&
 361                                         data->ipv4_gateway->vpn == TRUE) {
 362                 connman_inet_del_host_route(data->index,
 363                                                 data->ipv4_gateway->vpn_ip);
 364                 connman_inet_clear_gateway_address(data->index,
 365                                                 data->ipv4_gateway->vpn_ip);
 366                 data->ipv4_gateway->active = FALSE;
 367
 368                 DBG("unset %p index %d vpn %s index %d phy %s",
 369                         data, data->index, data->ipv4_gateway->vpn_ip,
 370                         data->ipv4_gateway->vpn_phy_index,
 371                         data->ipv4_gateway->vpn_phy_ip);
 372
 373                 return;
 374         }
 375
 376         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL &&
 377                                         data->ipv6_gateway->vpn == TRUE) {
 378                 connman_inet_del_ipv6_host_route(data->index,
 379                                                 data->ipv6_gateway->vpn_ip);
 380                 connman_inet_clear_ipv6_gateway_address(data->index,
 381                                                 data->ipv6_gateway->vpn_ip);
 382                 data->ipv6_gateway->active = FALSE;
 383
 384                 DBG("unset %p index %d vpn %s index %d phy %s",
 385                         data, data->index, data->ipv6_gateway->vpn_ip,
 386                         data->ipv6_gateway->vpn_phy_index,
 387                         data->ipv6_gateway->vpn_phy_ip);
 388
 389                 return;
 390         }
 391
 392         index = __connman_service_get_index(data->service);
 393
 394         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL &&
 395                         g_strcmp0(data->ipv4_gateway->gateway,
 396                                                         "0.0.0.0") == 0) {
 397                 connman_inet_clear_gateway_interface(index);
 398                 return;
 399         }
 400
 401         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL &&
 402                         g_strcmp0(data->ipv6_gateway->gateway,
 403                                                         "::") == 0) {
 404                 connman_inet_clear_ipv6_gateway_interface(index);
 405                 return;
 406         }
 407
 408         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL)
 409                 connman_inet_clear_ipv6_gateway_address(index,
 410                                                 data->ipv6_gateway->gateway);
 411
 412         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL)
 413                 connman_inet_clear_gateway_address(index,
 414                                                 data->ipv4_gateway->gateway);
 415 }
 416
 417 static struct gateway_data *find_default_gateway(void)
 418 {
 419         struct gateway_data *found = NULL;
 420         unsigned int order = 0;
 421         GHashTableIter iter;
 422         gpointer value, key;
 423
 424         g_hash_table_iter_init(&iter, gateway_hash);
 425
 426         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 427                 struct gateway_data *data = value;
 428
 429                 if (found == NULL || data->order > order) {
 430                         found = data;
 431                         order = data->order;
 432
 433                         DBG("default %p order %d", found, order);
 434                 }
 435         }
 436
 437         return found;
 438 }
 439
 440 static void remove_gateway(gpointer user_data)
 441 {
 442         struct gateway_data *data = user_data;
 443
 444         DBG("gateway ipv4 %p ipv6 %p", data->ipv4_gateway, data->ipv6_gateway);
 445
 446         if (data->ipv4_gateway != NULL) {
 447                 g_free(data->ipv4_gateway->gateway);
 448                 g_free(data->ipv4_gateway->vpn_ip);
 449                 g_free(data->ipv4_gateway->vpn_phy_ip);
 450                 g_free(data->ipv4_gateway);
 451         }
 452
 453         if (data->ipv6_gateway != NULL) {
 454                 g_free(data->ipv6_gateway->gateway);
 455                 g_free(data->ipv6_gateway->vpn_ip);
 456                 g_free(data->ipv6_gateway->vpn_phy_ip);
 457                 g_free(data->ipv6_gateway);
 458         }
 459
 460         g_free(data);
 461 }
 462
 463 static void connection_delgateway(int index, const char *gateway)
 464 {
 465         struct gateway_config *config;
 466         struct gateway_data *data;
 467
 468         DBG("index %d gateway %s", index, gateway);
 469
 470         config = find_gateway(index, gateway);
 471         if (config != NULL)
 472                 config->active = FALSE;
 473
 474         data = find_default_gateway();
 475         if (data != NULL)
 476                 set_default_gateway(data, CONNMAN_IPCONFIG_TYPE_ALL);
 477 }
 478
 479 static struct connman_rtnl connection_rtnl = {
 480         .name           = "connection",
 481         .newgateway     = connection_newgateway,
 482         .delgateway     = connection_delgateway,
 483 };
 484
 485 static struct gateway_data *find_active_gateway(void)
 486 {
 487         GHashTableIter iter;
 488         gpointer value, key;
 489
 490         DBG("");
 491
 492         g_hash_table_iter_init(&iter, gateway_hash);
 493
 494         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 495                 struct gateway_data *data = value;
 496
 497                 if (data->ipv4_gateway != NULL &&
 498                                 data->ipv4_gateway->active == TRUE)
 499                         return data;
 500
 501                 if (data->ipv6_gateway != NULL &&
 502                                 data->ipv6_gateway->active == TRUE)
 503                         return data;
 504         }
 505
 506         return NULL;
 507 }
 508
 509 static void update_order(void)
 510 {
 511         GHashTableIter iter;
 512         gpointer value, key;
 513
 514         DBG("");
 515
 516         g_hash_table_iter_init(&iter, gateway_hash);
 517
 518         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 519                 struct gateway_data *data = value;
 520
 521                 data->order = __connman_service_get_order(data->service);
 522         }
 523 }
 524
 525 void __connman_connection_gateway_activate(struct connman_service *service,
 526                                         enum connman_ipconfig_type type)
 527 {
 528         struct gateway_data *data = NULL;
 529
 530         data = g_hash_table_lookup(gateway_hash, service);
 531         if (data == NULL)
 532                 return;
 533
 534         DBG("gateway %p/%p type %d", data->ipv4_gateway,
 535                                         data->ipv6_gateway, type);
 536
 537         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
 538                 data->ipv4_gateway->active = TRUE;
 539         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
 540                 data->ipv6_gateway->active = TRUE;
 541 }
 542
 543 int __connman_connection_gateway_add(struct connman_service *service,
 544                                         const char *gateway,
 545                                         enum connman_ipconfig_type type,
 546                                         const char *peer)
 547 {
 548         struct gateway_data *active_gateway = NULL;
 549         struct gateway_data *new_gateway = NULL;
 550         enum connman_ipconfig_type type4 = CONNMAN_IPCONFIG_TYPE_UNKNOWN,
 551                 type6 = CONNMAN_IPCONFIG_TYPE_UNKNOWN;
 552         int index;
 553
 554         index = __connman_service_get_index(service);
 555
 556         /*
 557          * If gateway is NULL, it's a point to point link and the default
 558          * gateway for ipv4 is 0.0.0.0 and for ipv6 is ::, meaning the
 559          * interface
 560          */
 561         if (gateway == NULL && type == CONNMAN_IPCONFIG_TYPE_IPV4)
 562                 gateway = "0.0.0.0";
 563
 564         if (gateway == NULL && type == CONNMAN_IPCONFIG_TYPE_IPV6)
 565                 gateway = "::";
 566
 567         DBG("service %p index %d gateway %s vpn ip %s type %d",
 568                 service, index, gateway, peer, type);
 569
 570         active_gateway = find_active_gateway();
 571         new_gateway = add_gateway(service, index, gateway, type);
 572         if (new_gateway == NULL)
 573                 return -EINVAL;
 574
 575         DBG("active %p index %d new %p", active_gateway,
 576                 active_gateway ? active_gateway->index : -1, new_gateway);
 577
 578         if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
 579                         new_gateway->ipv6_gateway != NULL &&
 580                         g_strcmp0(new_gateway->ipv6_gateway->gateway,
 581                                                                 "::") != 0)
 582                 connman_inet_add_ipv6_host_route(index,
 583                                         new_gateway->ipv6_gateway->gateway,
 584                                         NULL);
 585
 586         if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
 587                         new_gateway->ipv4_gateway != NULL &&
 588                         g_strcmp0(new_gateway->ipv4_gateway->gateway,
 589                                                         "0.0.0.0") != 0)
 590                 connman_inet_add_host_route(index,
 591                                         new_gateway->ipv4_gateway->gateway,
 592                                         NULL);
 593
 594         if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
 595                                 new_gateway->ipv4_gateway != NULL) {
 596                 __connman_service_nameserver_add_routes(service,
 597                                         new_gateway->ipv4_gateway->gateway);
 598                 type4 = CONNMAN_IPCONFIG_TYPE_IPV4;
 599         }
 600
 601         if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
 602                                 new_gateway->ipv6_gateway != NULL) {
 603                 __connman_service_nameserver_add_routes(service,
 604                                         new_gateway->ipv6_gateway->gateway);
 605                 type6 = CONNMAN_IPCONFIG_TYPE_IPV6;
 606         }
 607
 608         if (connman_service_get_type(service) == CONNMAN_SERVICE_TYPE_VPN) {
 609                 if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
 610                                         new_gateway->ipv4_gateway != NULL) {
 611                         new_gateway->ipv4_gateway->vpn = TRUE;
 612                         if (peer != NULL)
 613                                 new_gateway->ipv4_gateway->vpn_ip =
 614                                                         g_strdup(peer);
 615                         else if (gateway != NULL)
 616                                 new_gateway->ipv4_gateway->vpn_ip =
 617                                                         g_strdup(gateway);
 618                         if (active_gateway) {
 619                                 const char *new_ipv4_gateway;
 620
 621                                 new_ipv4_gateway =
 622                                         active_gateway->ipv4_gateway->gateway;
 623                                 if (new_ipv4_gateway != NULL &&
 624                                          g_strcmp0(new_ipv4_gateway,
 625                                                         "0.0.0.0") != 0)
 626                                         new_gateway->ipv4_gateway->vpn_phy_ip =
 627                                                 g_strdup(new_ipv4_gateway);
 628
 629                                 new_gateway->ipv4_gateway->vpn_phy_index =
 630                                                         active_gateway->index;
 631                         }
 632
 633                         DBG("vpn %s phy %s index %d",
 634                                 new_gateway->ipv4_gateway->vpn_ip,
 635                                 new_gateway->ipv4_gateway->vpn_phy_ip,
 636                                 new_gateway->ipv4_gateway->vpn_phy_index);
 637
 638                 } else if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
 639                                         new_gateway->ipv6_gateway != NULL) {
 640                         new_gateway->ipv6_gateway->vpn = TRUE;
 641                         if (peer != NULL)
 642                                 new_gateway->ipv6_gateway->vpn_ip =
 643                                                         g_strdup(peer);
 644                         else if (gateway != NULL)
 645                                 new_gateway->ipv6_gateway->vpn_ip =
 646                                                         g_strdup(gateway);
 647                         if (active_gateway) {
 648                                 const char *new_ipv6_gateway;
 649
 650                                 new_ipv6_gateway =
 651                                         active_gateway->ipv6_gateway->gateway;
 652                                 if (new_ipv6_gateway != NULL &&
 653                                         g_strcmp0(new_ipv6_gateway, "::") != 0)
 654                                         new_gateway->ipv6_gateway->vpn_phy_ip =
 655                                                 g_strdup(new_ipv6_gateway);
 656
 657                                 new_gateway->ipv6_gateway->vpn_phy_index =
 658                                                         active_gateway->index;
 659                         }
 660
 661                         DBG("vpn %s phy %s index %d",
 662                                 new_gateway->ipv6_gateway->vpn_ip,
 663                                 new_gateway->ipv6_gateway->vpn_phy_ip,
 664                                 new_gateway->ipv6_gateway->vpn_phy_index);
 665                 }
 666         } else {
 667                 if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
 668                                         new_gateway->ipv4_gateway != NULL)
 669                         new_gateway->ipv4_gateway->vpn = FALSE;
 670
 671                 if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
 672                                         new_gateway->ipv6_gateway != NULL)
 673                         new_gateway->ipv6_gateway->vpn = FALSE;
 674         }
 675
 676         if (active_gateway == NULL) {
 677                 set_default_gateway(new_gateway, type);
 678                 goto done;
 679         }
 680
 681         if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
 682                                 new_gateway->ipv4_gateway != NULL &&
 683                                 new_gateway->ipv4_gateway->vpn == TRUE) {
 684                 connman_inet_add_host_route(active_gateway->index,
 685                                         new_gateway->ipv4_gateway->gateway,
 686                                         active_gateway->ipv4_gateway->gateway);
 687                 connman_inet_clear_gateway_address(active_gateway->index,
 688                                         active_gateway->ipv4_gateway->gateway);
 689         }
 690
 691         if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
 692                                 new_gateway->ipv6_gateway != NULL &&
 693                                 new_gateway->ipv6_gateway->vpn == TRUE) {
 694                 connman_inet_add_ipv6_host_route(active_gateway->index,
 695                                         new_gateway->ipv6_gateway->gateway,
 696                                         active_gateway->ipv6_gateway->gateway);
 697                 connman_inet_clear_ipv6_gateway_address(active_gateway->index,
 698                                         active_gateway->ipv6_gateway->gateway);
 699         }
 700
 701 done:
 702         if (type4 == CONNMAN_IPCONFIG_TYPE_IPV4)
 703                 __connman_service_ipconfig_indicate_state(service,
 704                                                 CONNMAN_SERVICE_STATE_READY,
 705                                                 CONNMAN_IPCONFIG_TYPE_IPV4);
 706
 707         if (type6 == CONNMAN_IPCONFIG_TYPE_IPV6)
 708                 __connman_service_ipconfig_indicate_state(service,
 709                                                 CONNMAN_SERVICE_STATE_READY,
 710                                                 CONNMAN_IPCONFIG_TYPE_IPV6);
 711         return 0;
 712 }
 713
 714 void __connman_connection_gateway_remove(struct connman_service *service,
 715                                         enum connman_ipconfig_type type)
 716 {
 717         struct gateway_data *data = NULL;
 718         gboolean set_default4 = FALSE, set_default6 = FALSE;
 719         int do_ipv4 = FALSE, do_ipv6 = FALSE;
 720         int err;
 721
 722         DBG("service %p type %d", service, type);
 723
 724         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
 725                 do_ipv4 = TRUE;
 726         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
 727                 do_ipv6 = TRUE;
 728         else
 729                 do_ipv4 = do_ipv6 = TRUE;
 730
 731         __connman_service_nameserver_del_routes(service);
 732
 733         data = g_hash_table_lookup(gateway_hash, service);
 734         if (data == NULL)
 735                 return;
 736
 737         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL)
 738                 set_default4 = data->ipv4_gateway->vpn;
 739
 740         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL)
 741                 set_default6 = data->ipv6_gateway->vpn;
 742
 743         DBG("ipv4 gateway %s ipv6 gateway %s vpn %d/%d",
 744                 data->ipv4_gateway ? data->ipv4_gateway->gateway : "<null>",
 745                 data->ipv6_gateway ? data->ipv6_gateway->gateway : "<null>",
 746                 set_default4, set_default6);
 747
 748         if (do_ipv4 == TRUE && data->ipv4_gateway != NULL &&
 749                         data->ipv4_gateway->vpn == TRUE && data->index >= 0)
 750                 connman_inet_del_host_route(data->index,
 751                                                 data->ipv4_gateway->gateway);
 752
 753         if (do_ipv6 == TRUE && data->ipv6_gateway != NULL &&
 754                         data->ipv6_gateway->vpn == TRUE && data->index >= 0)
 755                 connman_inet_del_ipv6_host_route(data->index,
 756                                                 data->ipv6_gateway->gateway);
 757
 758         __connman_service_nameserver_del_routes(service);
 759
 760         err = disable_gateway(data, type);
 761
 762         /*
 763          * We remove the service from the hash only if all the gateway
 764          * settings are to be removed.
 765          */
 766         if (do_ipv4 == do_ipv6 ||
 767                 (data->ipv4_gateway != NULL && data->ipv6_gateway == NULL
 768                         && do_ipv4 == TRUE) ||
 769                 (data->ipv6_gateway != NULL && data->ipv4_gateway == NULL
 770                         && do_ipv6 == TRUE)
 771                 ) {
 772                 connman_service_unref(service);
 773                 g_hash_table_remove(gateway_hash, service);
 774         } else
 775                 DBG("Not yet removing gw ipv4 %p/%d ipv6 %p/%d",
 776                         data->ipv4_gateway, do_ipv4,
 777                         data->ipv6_gateway, do_ipv6);
 778
 779         /* with vpn this will be called after the network was deleted,
 780          * we need to call set_default here because we will not recieve any
 781          * gateway delete notification.
 782          * We hit the same issue if remove_gateway() fails.
 783          */
 784         if (set_default4 || set_default6 || err < 0) {
 785                 data = find_default_gateway();
 786                 if (data != NULL)
 787                         set_default_gateway(data, type);
 788         }
 789 }
 790
 791 gboolean __connman_connection_update_gateway(void)
 792 {
 793         struct gateway_data *active_gateway, *default_gateway;
 794         gboolean updated = FALSE;
 795
 796         if (gateway_hash == NULL)
 797                 return updated;
 798
 799         active_gateway = find_active_gateway();
 800
 801         update_order();
 802
 803         default_gateway = find_default_gateway();
 804
 805         DBG("active %p default %p", active_gateway, default_gateway);
 806
 807         if (active_gateway && active_gateway != default_gateway) {
 808                 updated = TRUE;
 809
 810                 if (active_gateway->ipv4_gateway)
 811                         unset_default_gateway(active_gateway,
 812                                         CONNMAN_IPCONFIG_TYPE_IPV4);
 813
 814                 if (active_gateway->ipv6_gateway)
 815                         unset_default_gateway(active_gateway,
 816                                         CONNMAN_IPCONFIG_TYPE_IPV6);
 817
 818                 if (default_gateway) {
 819                         if (default_gateway->ipv4_gateway)
 820                                 set_default_gateway(default_gateway,
 821                                                 CONNMAN_IPCONFIG_TYPE_IPV4);
 822
 823                         if (default_gateway->ipv6_gateway)
 824                                 set_default_gateway(default_gateway,
 825                                                 CONNMAN_IPCONFIG_TYPE_IPV6);
 826                 }
 827         }
 828
 829         return updated;
 830 }
 831
 832 int __connman_connection_init(void)
 833 {
 834         int err;
 835
 836         DBG("");
 837
 838         gateway_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 839                                                         NULL, remove_gateway);
 840
 841         err = connman_rtnl_register(&connection_rtnl);
 842         if (err < 0)
 843                 connman_error("Failed to setup RTNL gateway driver");
 844
 845         return err;
 846 }
 847
 848 void __connman_connection_cleanup(void)
 849 {
 850         GHashTableIter iter;
 851         gpointer value, key;
 852
 853         DBG("");
 854
 855         connman_rtnl_unregister(&connection_rtnl);
 856
 857         g_hash_table_iter_init(&iter, gateway_hash);
 858
 859         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
 860                 struct gateway_data *data = value;
 861
 862                 disable_gateway(data, CONNMAN_IPCONFIG_TYPE_ALL);
 863         }
 864
 865         g_hash_table_destroy(gateway_hash);
 866         gateway_hash = NULL;
 867 }