src/ipconfig.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  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 <net/if.h>
  27 #include <net/if_arp.h>
  28
  29 #ifndef IFF_LOWER_UP
  30 #define IFF_LOWER_UP    0x10000
  31 #endif
  32
  33 #include <gdbus.h>
  34
  35 #include "connman.h"
  36
  37 struct connman_ipconfig {
  38         gint refcount;
  39         int index;
  40
  41         const struct connman_ipconfig_ops *ops;
  42         void *ops_data;
  43
  44         enum connman_ipconfig_method method;
  45         struct connman_ipaddress *address;
  46 };
  47
  48 struct connman_ipdevice {
  49         int index;
  50         char *ifname;
  51         unsigned short type;
  52         unsigned int flags;
  53
  54         GSList *address_list;
  55         char *gateway;
  56
  57         struct connman_ipconfig *config;
  58         struct connman_ipconfig_driver *driver;
  59 };
  60
  61 static GHashTable *ipdevice_hash = NULL;
  62 static GList *ipconfig_list = NULL;
  63
  64 struct connman_ipaddress *connman_ipaddress_alloc(void)
  65 {
  66         struct connman_ipaddress *ipaddress;
  67
  68         ipaddress = g_try_new0(struct connman_ipaddress, 1);
  69         if (ipaddress == NULL)
  70                 return NULL;
  71
  72         return ipaddress;
  73 }
  74
  75 void connman_ipaddress_free(struct connman_ipaddress *ipaddress)
  76 {
  77         g_free(ipaddress->broadcast);
  78         g_free(ipaddress->peer);
  79         g_free(ipaddress->local);
  80         g_free(ipaddress);
  81 }
  82
  83 void connman_ipaddress_copy(struct connman_ipaddress *ipaddress,
  84                                         struct connman_ipaddress *source)
  85 {
  86         ipaddress->prefixlen = source->prefixlen;
  87
  88         g_free(ipaddress->local);
  89         ipaddress->local = g_strdup(source->local);
  90
  91         g_free(ipaddress->peer);
  92         ipaddress->peer = g_strdup(source->peer);
  93
  94         g_free(ipaddress->broadcast);
  95         ipaddress->broadcast = g_strdup(source->broadcast);
  96 }
  97
  98 static void free_address_list(struct connman_ipdevice *ipdevice)
  99 {
 100         GSList *list;
 101
 102         for (list = ipdevice->address_list; list; list = list->next) {
 103                 struct connman_ipaddress *ipaddress = list->data;
 104
 105                 connman_ipaddress_free(ipaddress);
 106                 list->data = NULL;
 107         }
 108
 109         g_slist_free(ipdevice->address_list);
 110         ipdevice->address_list = NULL;
 111 }
 112
 113 static struct connman_ipaddress *find_ipaddress(struct connman_ipdevice *ipdevice,
 114                                 unsigned char prefixlen, const char *local)
 115 {
 116         GSList *list;
 117
 118         for (list = ipdevice->address_list; list; list = list->next) {
 119                 struct connman_ipaddress *ipaddress = list->data;
 120
 121                 if (g_strcmp0(ipaddress->local, local) == 0 &&
 122                                         ipaddress->prefixlen == prefixlen)
 123                         return ipaddress;
 124         }
 125
 126         return NULL;
 127 }
 128
 129 static const char *type2str(unsigned short type)
 130 {
 131         switch (type) {
 132         case ARPHRD_ETHER:
 133                 return "ETHER";
 134         case ARPHRD_LOOPBACK:
 135                 return "LOOPBACK";
 136         case ARPHRD_PPP:
 137                 return "PPP";
 138         case ARPHRD_NONE:
 139                 return "NONE";
 140         case ARPHRD_VOID:
 141                 return "VOID";
 142         }
 143
 144         return "";
 145 }
 146
 147 static const char *scope2str(unsigned char scope)
 148 {
 149         switch (scope) {
 150         case 0:
 151                 return "UNIVERSE";
 152         case 253:
 153                 return "LINK";
 154         }
 155
 156         return "";
 157 }
 158
 159 static void free_ipdevice(gpointer data)
 160 {
 161         struct connman_ipdevice *ipdevice = data;
 162
 163         connman_info("%s {remove} index %d", ipdevice->ifname,
 164                                                         ipdevice->index);
 165
 166         if (ipdevice->config != NULL)
 167                 connman_ipconfig_unref(ipdevice->config);
 168
 169         free_address_list(ipdevice);
 170         g_free(ipdevice->gateway);
 171
 172         g_free(ipdevice->ifname);
 173         g_free(ipdevice);
 174 }
 175
 176 static GSList *driver_list = NULL;
 177
 178 static gint compare_priority(gconstpointer a, gconstpointer b)
 179 {
 180         const struct connman_ipconfig_driver *driver1 = a;
 181         const struct connman_ipconfig_driver *driver2 = b;
 182
 183         return driver2->priority - driver1->priority;
 184 }
 185
 186 /**
 187  * connman_ipconfig_driver_register:
 188  * @driver: IP configuration driver
 189  *
 190  * Register a new IP configuration driver
 191  *
 192  * Returns: %0 on success
 193  */
 194 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 195 {
 196         DBG("driver %p name %s", driver, driver->name);
 197
 198         driver_list = g_slist_insert_sorted(driver_list, driver,
 199                                                         compare_priority);
 200
 201         return 0;
 202 }
 203
 204 /**
 205  * connman_ipconfig_driver_unregister:
 206  * @driver: IP configuration driver
 207  *
 208  * Remove a previously registered IP configuration driver.
 209  */
 210 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 211 {
 212         DBG("driver %p name %s", driver, driver->name);
 213
 214         driver_list = g_slist_remove(driver_list, driver);
 215 }
 216
 217 static void __connman_ipconfig_lower_up(struct connman_ipdevice *ipdevice)
 218 {
 219         GSList *list;
 220
 221         DBG("ipconfig %p", ipdevice->config);
 222
 223         if (ipdevice->config == NULL)
 224                 return;
 225
 226         switch (ipdevice->config->method) {
 227         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 228         case CONNMAN_IPCONFIG_METHOD_IGNORE:
 229         case CONNMAN_IPCONFIG_METHOD_STATIC:
 230                 return;
 231         case CONNMAN_IPCONFIG_METHOD_DHCP:
 232                 break;
 233         }
 234
 235         if (ipdevice->driver != NULL)
 236                 return;
 237
 238         for (list = driver_list; list; list = list->next) {
 239                 struct connman_ipconfig_driver *driver = list->data;
 240
 241                 if (driver->request(ipdevice->config) == 0) {
 242                         ipdevice->driver = driver;
 243                         break;
 244                 }
 245         }
 246 }
 247
 248 static void __connman_ipconfig_lower_down(struct connman_ipdevice *ipdevice)
 249 {
 250         DBG("ipconfig %p", ipdevice->config);
 251
 252         if (ipdevice->config == NULL)
 253                 return;
 254
 255         if (ipdevice->driver == NULL)
 256                 return;
 257
 258         ipdevice->driver->release(ipdevice->config);
 259 }
 260
 261 void __connman_ipconfig_newlink(int index, unsigned short type,
 262                                                         unsigned int flags)
 263 {
 264         struct connman_ipdevice *ipdevice;
 265         GList *list;
 266         GString *str;
 267         gboolean up = FALSE, down = FALSE;
 268         gboolean lower_up = FALSE, lower_down = FALSE;
 269
 270         DBG("index %d", index);
 271
 272         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 273         if (ipdevice != NULL)
 274                 goto update;
 275
 276         ipdevice = g_try_new0(struct connman_ipdevice, 1);
 277         if (ipdevice == NULL)
 278                 return;
 279
 280         ipdevice->index = index;
 281         ipdevice->ifname = connman_inet_ifname(index);
 282         ipdevice->type = type;
 283
 284         ipdevice->config = connman_ipconfig_create(index);
 285         if (ipdevice->config == NULL) {
 286                 g_free(ipdevice->ifname);
 287                 g_free(ipdevice);
 288                 return;
 289         }
 290
 291         if (type == ARPHRD_ETHER)
 292                 connman_ipconfig_set_method(ipdevice->config,
 293                                         CONNMAN_IPCONFIG_METHOD_IGNORE);
 294
 295         g_hash_table_insert(ipdevice_hash, GINT_TO_POINTER(index), ipdevice);
 296
 297         connman_info("%s {create} index %d type %d <%s>", ipdevice->ifname,
 298                                                 index, type, type2str(type));
 299
 300 update:
 301         if (flags == ipdevice->flags)
 302                 return;
 303
 304         if ((ipdevice->flags & IFF_UP) != (flags & IFF_UP)) {
 305                 if (flags & IFF_UP)
 306                         up = TRUE;
 307                 else
 308                         down = TRUE;
 309         }
 310
 311         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) !=
 312                                 (flags & (IFF_RUNNING | IFF_LOWER_UP))) {
 313                 if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) ==
 314                                         (IFF_RUNNING | IFF_LOWER_UP))
 315                         lower_up = TRUE;
 316                 else if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) == 0)
 317                         lower_down = TRUE;
 318         }
 319
 320         ipdevice->flags = flags;
 321
 322         str = g_string_new(NULL);
 323         if (str == NULL)
 324                 return;
 325
 326         if (flags & IFF_UP)
 327                 g_string_append(str, "UP");
 328         else
 329                 g_string_append(str, "DOWN");
 330
 331         if (flags & IFF_RUNNING)
 332                 g_string_append(str, ",RUNNING");
 333
 334         if (flags & IFF_LOWER_UP)
 335                 g_string_append(str, ",LOWER_UP");
 336
 337         connman_info("%s {update} flags %u <%s>", ipdevice->ifname,
 338                                                         flags, str->str);
 339
 340         g_string_free(str, TRUE);
 341
 342         for (list = g_list_first(ipconfig_list); list;
 343                                                 list = g_list_next(list)) {
 344                 struct connman_ipconfig *ipconfig = list->data;
 345
 346                 if (index != ipconfig->index)
 347                         continue;
 348
 349                 if (ipconfig->ops) {
 350                         if (up == TRUE && ipconfig->ops->up)
 351                                 ipconfig->ops->up(ipconfig);
 352                         if (lower_up == TRUE && ipconfig->ops->lower_up)
 353                                 ipconfig->ops->lower_up(ipconfig);
 354
 355                         if (lower_down == TRUE && ipconfig->ops->lower_down)
 356                                 ipconfig->ops->lower_down(ipconfig);
 357                         if (down == TRUE && ipconfig->ops->down)
 358                                 ipconfig->ops->down(ipconfig);
 359                 }
 360         }
 361
 362         if (lower_up)
 363                 __connman_ipconfig_lower_up(ipdevice);
 364         if (lower_down)
 365                 __connman_ipconfig_lower_down(ipdevice);
 366 }
 367
 368 void __connman_ipconfig_dellink(int index)
 369 {
 370         struct connman_ipdevice *ipdevice;
 371         GList *list;
 372
 373         DBG("index %d", index);
 374
 375         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 376         if (ipdevice == NULL)
 377                 return;
 378
 379         for (list = g_list_first(ipconfig_list); list;
 380                                                 list = g_list_next(list)) {
 381                 struct connman_ipconfig *ipconfig = list->data;
 382
 383                 if (index != ipconfig->index)
 384                         continue;
 385
 386                 ipconfig->index = -1;
 387
 388                 if (ipconfig->ops && ipconfig->ops->lower_down)
 389                         ipconfig->ops->lower_down(ipconfig);
 390                 if (ipconfig->ops && ipconfig->ops->down)
 391                         ipconfig->ops->down(ipconfig);
 392         }
 393
 394         __connman_ipconfig_lower_down(ipdevice);
 395
 396         g_hash_table_remove(ipdevice_hash, GINT_TO_POINTER(index));
 397 }
 398
 399 void __connman_ipconfig_newaddr(int index, const char *label,
 400                                 unsigned char prefixlen, const char *address)
 401 {
 402         struct connman_ipdevice *ipdevice;
 403         struct connman_ipaddress *ipaddress;
 404
 405         DBG("index %d", index);
 406
 407         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 408         if (ipdevice == NULL)
 409                 return;
 410
 411         ipaddress = connman_ipaddress_alloc();
 412         if (ipaddress == NULL)
 413                 return;
 414
 415         ipaddress->prefixlen = prefixlen;
 416         ipaddress->local = g_strdup(address);
 417
 418         ipdevice->address_list = g_slist_append(ipdevice->address_list,
 419                                                                 ipaddress);
 420
 421         connman_info("%s {add} address %s/%u label %s", ipdevice->ifname,
 422                                                 address, prefixlen, label);
 423 }
 424
 425 void __connman_ipconfig_deladdr(int index, const char *label,
 426                                 unsigned char prefixlen, const char *address)
 427 {
 428         struct connman_ipdevice *ipdevice;
 429         struct connman_ipaddress *ipaddress;
 430
 431         DBG("index %d", index);
 432
 433         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 434         if (ipdevice == NULL)
 435                 return;
 436
 437         ipaddress = find_ipaddress(ipdevice, prefixlen, address);
 438         if (ipaddress == NULL)
 439                 return;
 440
 441         ipdevice->address_list = g_slist_remove(ipdevice->address_list,
 442                                                                 ipaddress);
 443
 444         connman_ipaddress_free(ipaddress);
 445
 446         connman_info("%s {del} address %s/%u label %s", ipdevice->ifname,
 447                                                 address, prefixlen, label);
 448 }
 449
 450 void __connman_ipconfig_newroute(int index, unsigned char scope,
 451                                         const char *dst, const char *gateway)
 452 {
 453         struct connman_ipdevice *ipdevice;
 454
 455         DBG("index %d", index);
 456
 457         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 458         if (ipdevice == NULL)
 459                 return;
 460
 461         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 462                 g_free(ipdevice->gateway);
 463                 ipdevice->gateway = g_strdup(gateway);
 464         }
 465
 466         connman_info("%s {add} route %s gw %s scope %u <%s>",
 467                                         ipdevice->ifname, dst, gateway,
 468                                                 scope, scope2str(scope));
 469 }
 470
 471 void __connman_ipconfig_delroute(int index, unsigned char scope,
 472                                         const char *dst, const char *gateway)
 473 {
 474         struct connman_ipdevice *ipdevice;
 475
 476         DBG("index %d", index);
 477
 478         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 479         if (ipdevice == NULL)
 480                 return;
 481
 482         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 483                 g_free(ipdevice->gateway);
 484                 ipdevice->gateway = NULL;
 485         }
 486
 487         connman_info("%s {del} route %s gw %s scope %u <%s>",
 488                                         ipdevice->ifname, dst, gateway,
 489                                                 scope, scope2str(scope));
 490 }
 491
 492 void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
 493                                                         void *user_data)
 494 {
 495         GList *list, *keys;
 496
 497         keys = g_hash_table_get_keys(ipdevice_hash);
 498         if (keys == NULL)
 499                 return;
 500
 501         for (list = g_list_first(keys); list; list = g_list_next(list)) {
 502                 int index = GPOINTER_TO_INT(list->data);
 503
 504                 function(index, user_data);
 505         }
 506
 507         g_list_free(keys);
 508 }
 509
 510 unsigned short __connman_ipconfig_get_type(int index)
 511 {
 512         struct connman_ipdevice *ipdevice;
 513
 514         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 515         if (ipdevice == NULL)
 516                 return ARPHRD_VOID;
 517
 518         return ipdevice->type;
 519 }
 520
 521 unsigned int __connman_ipconfig_get_flags(int index)
 522 {
 523         struct connman_ipdevice *ipdevice;
 524
 525         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 526         if (ipdevice == NULL)
 527                 return 0;
 528
 529         return ipdevice->flags;
 530 }
 531
 532 const char *__connman_ipconfig_get_gateway(int index)
 533 {
 534         struct connman_ipdevice *ipdevice;
 535
 536         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 537         if (ipdevice == NULL)
 538                 return NULL;
 539
 540         return ipdevice->gateway;
 541 }
 542
 543 /**
 544  * connman_ipconfig_create:
 545  *
 546  * Allocate a new ipconfig structure.
 547  *
 548  * Returns: a newly-allocated #connman_ipconfig structure
 549  */
 550 struct connman_ipconfig *connman_ipconfig_create(int index)
 551 {
 552         struct connman_ipconfig *ipconfig;
 553
 554         DBG("index %d", index);
 555
 556         ipconfig = g_try_new0(struct connman_ipconfig, 1);
 557         if (ipconfig == NULL)
 558                 return NULL;
 559
 560         ipconfig->refcount = 1;
 561
 562         ipconfig->index = index;
 563
 564         ipconfig->address = connman_ipaddress_alloc();
 565         if (ipconfig->address == NULL) {
 566                 g_free(ipconfig);
 567                 return NULL;
 568         }
 569
 570         DBG("ipconfig %p", ipconfig);
 571
 572         ipconfig_list = g_list_append(ipconfig_list, ipconfig);
 573
 574         return ipconfig;
 575 }
 576
 577 /**
 578  * connman_ipconfig_ref:
 579  * @ipconfig: ipconfig structure
 580  *
 581  * Increase reference counter of ipconfig
 582  */
 583 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
 584 {
 585         g_atomic_int_inc(&ipconfig->refcount);
 586
 587         return ipconfig;
 588 }
 589
 590 /**
 591  * connman_ipconfig_unref:
 592  * @ipconfig: ipconfig structure
 593  *
 594  * Decrease reference counter of ipconfig
 595  */
 596 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
 597 {
 598         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
 599                 ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
 600
 601                 connman_ipaddress_free(ipconfig->address);
 602                 g_free(ipconfig);
 603         }
 604 }
 605
 606 /**
 607  * connman_ipconfig_get_data:
 608  * @ipconfig: ipconfig structure
 609  *
 610  * Get private data pointer
 611  */
 612 void *connman_ipconfig_get_data(struct connman_ipconfig *ipconfig)
 613 {
 614         return ipconfig->ops_data;
 615 }
 616
 617 /**
 618  * connman_ipconfig_set_data:
 619  * @ipconfig: ipconfig structure
 620  * @data: data pointer
 621  *
 622  * Set private data pointer
 623  */
 624 void connman_ipconfig_set_data(struct connman_ipconfig *ipconfig, void *data)
 625 {
 626         ipconfig->ops_data = data;
 627 }
 628
 629 /**
 630  * connman_ipconfig_get_index:
 631  * @ipconfig: ipconfig structure
 632  *
 633  * Get interface index
 634  */
 635 int connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 636 {
 637         return ipconfig->index;
 638 }
 639
 640 /**
 641  * connman_ipconfig_get_ifname:
 642  * @ipconfig: ipconfig structure
 643  *
 644  * Get interface name
 645  */
 646 const char *connman_ipconfig_get_ifname(struct connman_ipconfig *ipconfig)
 647 {
 648         struct connman_ipdevice *ipdevice;
 649
 650         if (ipconfig->index < 0)
 651                 return NULL;
 652
 653         ipdevice = g_hash_table_lookup(ipdevice_hash,
 654                                         GINT_TO_POINTER(ipconfig->index));
 655         if (ipdevice == NULL)
 656                 return NULL;
 657
 658         return ipdevice->ifname;
 659 }
 660
 661 /**
 662  * connman_ipconfig_set_ops:
 663  * @ipconfig: ipconfig structure
 664  * @ops: operation callbacks
 665  *
 666  * Set the operation callbacks
 667  */
 668 void connman_ipconfig_set_ops(struct connman_ipconfig *ipconfig,
 669                                 const struct connman_ipconfig_ops *ops)
 670 {
 671         ipconfig->ops = ops;
 672 }
 673
 674 /**
 675  * connman_ipconfig_set_method:
 676  * @ipconfig: ipconfig structure
 677  * @method: configuration method
 678  *
 679  * Set the configuration method
 680  */
 681 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 682                                         enum connman_ipconfig_method method)
 683 {
 684         ipconfig->method = method;
 685
 686         return 0;
 687 }
 688
 689 /**
 690  * connman_ipconfig_bind:
 691  * @ipconfig: ipconfig structure
 692  * @ipaddress: ipaddress structure
 693  *
 694  * Bind IP address details to configuration
 695  */
 696 void connman_ipconfig_bind(struct connman_ipconfig *ipconfig,
 697                                         struct connman_ipaddress *ipaddress)
 698 {
 699         connman_ipaddress_copy(ipconfig->address, ipaddress);
 700 }
 701
 702 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
 703 {
 704         switch (method) {
 705         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 706                 break;
 707         case CONNMAN_IPCONFIG_METHOD_IGNORE:
 708                 return "ignore";
 709         case CONNMAN_IPCONFIG_METHOD_STATIC:
 710                 return "static";
 711         case CONNMAN_IPCONFIG_METHOD_DHCP:
 712                 return "dhcp";
 713         }
 714
 715         return NULL;
 716 }
 717
 718 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
 719 {
 720         if (g_strcmp0(method, "ignore") == 0)
 721                 return CONNMAN_IPCONFIG_METHOD_IGNORE;
 722         else if (g_strcmp0(method, "static") == 0)
 723                 return CONNMAN_IPCONFIG_METHOD_STATIC;
 724         else if (g_strcmp0(method, "dhcp") == 0)
 725                 return CONNMAN_IPCONFIG_METHOD_DHCP;
 726         else
 727                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 728 }
 729
 730 static void append_variant(DBusMessageIter *iter, const char *prefix,
 731                                         const char *key, int type, void *val)
 732 {
 733         char *str;
 734
 735         if (prefix == NULL) {
 736                 connman_dbus_dict_append_variant(iter, key, type, val);
 737                 return;
 738         }
 739
 740         str = g_strdup_printf("%s%s", prefix, key);
 741         if (str != NULL)
 742                 connman_dbus_dict_append_variant(iter, str, type, val);
 743
 744         g_free(str);
 745 }
 746
 747 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
 748                                 DBusMessageIter *iter, const char *prefix)
 749 {
 750         const char *str;
 751
 752         str = __connman_ipconfig_method2string(ipconfig->method);
 753         if (str == NULL)
 754                 return;
 755
 756         append_variant(iter, prefix, "Method", DBUS_TYPE_STRING, &str);
 757 }
 758
 759 int __connman_ipconfig_set_ipv4(struct connman_ipconfig *ipconfig,
 760                                 const char *key, DBusMessageIter *value)
 761 {
 762         int type = dbus_message_iter_get_arg_type(value);
 763
 764         DBG("ipconfig %p key %s type %d", ipconfig, key, type);
 765
 766         if (g_strcmp0(key, "Method") == 0) {
 767                 const char *method;
 768
 769                 if (type != DBUS_TYPE_STRING)
 770                         return -EINVAL;
 771
 772                 dbus_message_iter_get_basic(value, &method);
 773
 774                 ipconfig->method = __connman_ipconfig_string2method(method);
 775         } else
 776                 return -EINVAL;
 777
 778         return 0;
 779 }
 780
 781 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
 782                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 783 {
 784         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 785
 786         return 0;
 787 }
 788
 789 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
 790                 GKeyFile *keyfile, const char *identifier, const char *prefix)
 791 {
 792         DBG("ipconfig %p identifier %s", ipconfig, identifier);
 793
 794         return 0;
 795 }
 796
 797 int __connman_ipconfig_init(void)
 798 {
 799         DBG("");
 800
 801         ipdevice_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 802                                                         NULL, free_ipdevice);
 803
 804         return 0;
 805 }
 806
 807 void __connman_ipconfig_cleanup(void)
 808 {
 809         DBG("");
 810
 811         g_hash_table_destroy(ipdevice_hash);
 812         ipdevice_hash = NULL;
 813 }