src/ipconfig.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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 #include <linux/if_link.h>
  29
  30 #ifndef IFF_LOWER_UP
  31 #define IFF_LOWER_UP    0x10000
  32 #endif
  33
  34 #include <gdbus.h>
  35
  36 #include "connman.h"
  37
  38 struct connman_ipconfig {
  39         gint refcount;
  40         int index;
  41
  42         struct connman_ipconfig *origin;
  43
  44         const struct connman_ipconfig_ops *ops;
  45         void *ops_data;
  46
  47         enum connman_ipconfig_method method;
  48         struct connman_ipaddress *address;
  49         struct connman_ipaddress *system;
  50 };
  51
  52 struct connman_ipdevice {
  53         int index;
  54         char *ifname;
  55         unsigned short type;
  56         unsigned int flags;
  57         char *address;
  58         uint16_t mtu;
  59         uint32_t tx_bytes;
  60         uint32_t rx_bytes;
  61
  62         GSList *address_list;
  63         char *gateway;
  64
  65         struct connman_ipconfig *config;
  66
  67         struct connman_ipconfig_driver *driver;
  68         struct connman_ipconfig *driver_config;
  69 };
  70
  71 static GHashTable *ipdevice_hash = NULL;
  72 static GList *ipconfig_list = NULL;
  73
  74 struct connman_ipaddress *connman_ipaddress_alloc(void)
  75 {
  76         struct connman_ipaddress *ipaddress;
  77
  78         ipaddress = g_try_new0(struct connman_ipaddress, 1);
  79         if (ipaddress == NULL)
  80                 return NULL;
  81
  82         return ipaddress;
  83 }
  84
  85 void connman_ipaddress_free(struct connman_ipaddress *ipaddress)
  86 {
  87         if (ipaddress == NULL)
  88                 return;
  89
  90         g_free(ipaddress->broadcast);
  91         g_free(ipaddress->peer);
  92         g_free(ipaddress->local);
  93         g_free(ipaddress->gateway);
  94         g_free(ipaddress);
  95 }
  96
  97 static unsigned char netmask2prefixlen(const char *netmask)
  98 {
  99         unsigned char bits = 0;
 100         in_addr_t mask = inet_network(netmask);
 101         in_addr_t host = ~mask;
 102
 103         /* a valid netmask must be 2^n - 1 */
 104         if ((host & (host + 1)) != 0)
 105                 return -1;
 106
 107         for (; mask; mask <<= 1)
 108                 ++bits;
 109
 110         return bits;
 111 }
 112
 113 void connman_ipaddress_set(struct connman_ipaddress *ipaddress,
 114                 const char *address, const char *netmask, const char *gateway)
 115 {
 116         if (ipaddress == NULL)
 117                 return;
 118
 119         if (netmask != NULL)
 120                 ipaddress->prefixlen = netmask2prefixlen(netmask);
 121         else
 122                 ipaddress->prefixlen = 32;
 123
 124         g_free(ipaddress->local);
 125         ipaddress->local = g_strdup(address);
 126
 127         g_free(ipaddress->gateway);
 128         ipaddress->gateway = g_strdup(gateway);
 129 }
 130
 131 void connman_ipaddress_clear(struct connman_ipaddress *ipaddress)
 132 {
 133         if (ipaddress == NULL)
 134                 return;
 135
 136         ipaddress->prefixlen = 0;
 137
 138         g_free(ipaddress->local);
 139         ipaddress->local = NULL;
 140
 141         g_free(ipaddress->peer);
 142         ipaddress->peer = NULL;
 143
 144         g_free(ipaddress->broadcast);
 145         ipaddress->broadcast = NULL;
 146
 147         g_free(ipaddress->gateway);
 148         ipaddress->gateway = NULL;
 149 }
 150
 151 void connman_ipaddress_copy(struct connman_ipaddress *ipaddress,
 152                                         struct connman_ipaddress *source)
 153 {
 154         if (ipaddress == NULL || source == NULL)
 155                 return;
 156
 157         ipaddress->prefixlen = source->prefixlen;
 158
 159         g_free(ipaddress->local);
 160         ipaddress->local = g_strdup(source->local);
 161
 162         g_free(ipaddress->peer);
 163         ipaddress->peer = g_strdup(source->peer);
 164
 165         g_free(ipaddress->broadcast);
 166         ipaddress->broadcast = g_strdup(source->broadcast);
 167
 168         g_free(ipaddress->gateway);
 169         ipaddress->gateway = g_strdup(source->gateway);
 170 }
 171
 172 static void free_address_list(struct connman_ipdevice *ipdevice)
 173 {
 174         GSList *list;
 175
 176         for (list = ipdevice->address_list; list; list = list->next) {
 177                 struct connman_ipaddress *ipaddress = list->data;
 178
 179                 connman_ipaddress_free(ipaddress);
 180                 list->data = NULL;
 181         }
 182
 183         g_slist_free(ipdevice->address_list);
 184         ipdevice->address_list = NULL;
 185 }
 186
 187 static struct connman_ipaddress *find_ipaddress(struct connman_ipdevice *ipdevice,
 188                                 unsigned char prefixlen, const char *local)
 189 {
 190         GSList *list;
 191
 192         for (list = ipdevice->address_list; list; list = list->next) {
 193                 struct connman_ipaddress *ipaddress = list->data;
 194
 195                 if (g_strcmp0(ipaddress->local, local) == 0 &&
 196                                         ipaddress->prefixlen == prefixlen)
 197                         return ipaddress;
 198         }
 199
 200         return NULL;
 201 }
 202
 203 static const char *type2str(unsigned short type)
 204 {
 205         switch (type) {
 206         case ARPHRD_ETHER:
 207                 return "ETHER";
 208         case ARPHRD_LOOPBACK:
 209                 return "LOOPBACK";
 210         case ARPHRD_PPP:
 211                 return "PPP";
 212         case ARPHRD_NONE:
 213                 return "NONE";
 214         case ARPHRD_VOID:
 215                 return "VOID";
 216         }
 217
 218         return "";
 219 }
 220
 221 static const char *scope2str(unsigned char scope)
 222 {
 223         switch (scope) {
 224         case 0:
 225                 return "UNIVERSE";
 226         case 253:
 227                 return "LINK";
 228         }
 229
 230         return "";
 231 }
 232
 233 static void free_ipdevice(gpointer data)
 234 {
 235         struct connman_ipdevice *ipdevice = data;
 236
 237         connman_info("%s {remove} index %d", ipdevice->ifname,
 238                                                         ipdevice->index);
 239
 240         if (ipdevice->config != NULL)
 241                 connman_ipconfig_unref(ipdevice->config);
 242
 243         free_address_list(ipdevice);
 244         g_free(ipdevice->gateway);
 245
 246         g_free(ipdevice->address);
 247         g_free(ipdevice->ifname);
 248         g_free(ipdevice);
 249 }
 250
 251 static GSList *driver_list = NULL;
 252
 253 static gint compare_priority(gconstpointer a, gconstpointer b)
 254 {
 255         const struct connman_ipconfig_driver *driver1 = a;
 256         const struct connman_ipconfig_driver *driver2 = b;
 257
 258         return driver2->priority - driver1->priority;
 259 }
 260
 261 /**
 262  * connman_ipconfig_driver_register:
 263  * @driver: IP configuration driver
 264  *
 265  * Register a new IP configuration driver
 266  *
 267  * Returns: %0 on success
 268  */
 269 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 270 {
 271         DBG("driver %p name %s", driver, driver->name);
 272
 273         driver_list = g_slist_insert_sorted(driver_list, driver,
 274                                                         compare_priority);
 275
 276         return 0;
 277 }
 278
 279 /**
 280  * connman_ipconfig_driver_unregister:
 281  * @driver: IP configuration driver
 282  *
 283  * Remove a previously registered IP configuration driver.
 284  */
 285 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 286 {
 287         DBG("driver %p name %s", driver, driver->name);
 288
 289         driver_list = g_slist_remove(driver_list, driver);
 290 }
 291
 292 static void __connman_ipconfig_lower_up(struct connman_ipdevice *ipdevice)
 293 {
 294         GSList *list;
 295
 296         DBG("ipconfig %p", ipdevice->config);
 297
 298         if (ipdevice->config == NULL)
 299                 return;
 300
 301         switch (ipdevice->config->method) {
 302         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 303         case CONNMAN_IPCONFIG_METHOD_OFF:
 304         case CONNMAN_IPCONFIG_METHOD_FIXED:
 305         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 306                 return;
 307         case CONNMAN_IPCONFIG_METHOD_DHCP:
 308                 break;
 309         }
 310
 311         if (ipdevice->driver != NULL)
 312                 return;
 313
 314         ipdevice->driver_config = connman_ipconfig_clone(ipdevice->config);
 315         if (ipdevice->driver_config == NULL)
 316                 return;
 317
 318         for (list = driver_list; list; list = list->next) {
 319                 struct connman_ipconfig_driver *driver = list->data;
 320
 321                 if (driver->request(ipdevice->driver_config) == 0) {
 322                         ipdevice->driver = driver;
 323                         break;
 324                 }
 325         }
 326
 327         if (ipdevice->driver == NULL) {
 328                 connman_ipconfig_unref(ipdevice->driver_config);
 329                 ipdevice->driver_config = NULL;
 330         }
 331 }
 332
 333 static void __connman_ipconfig_lower_down(struct connman_ipdevice *ipdevice)
 334 {
 335         DBG("ipconfig %p", ipdevice->config);
 336
 337         if (ipdevice->config == NULL)
 338                 return;
 339
 340         if (ipdevice->driver == NULL)
 341                 return;
 342
 343         ipdevice->driver->release(ipdevice->driver_config);
 344
 345         ipdevice->driver = NULL;
 346
 347         connman_ipconfig_unref(ipdevice->driver_config);
 348         ipdevice->driver_config = NULL;
 349
 350         connman_inet_clear_address(ipdevice->index);
 351 }
 352
 353 static void update_stats(struct connman_ipdevice *ipdevice,
 354                                                 struct rtnl_link_stats *stats)
 355 {
 356         if (stats->rx_packets == 0 && stats->tx_packets == 0)
 357                 return;
 358
 359         connman_info("%s {RX} %u packets %u bytes", ipdevice->ifname,
 360                                         stats->rx_packets, stats->rx_bytes);
 361         connman_info("%s {TX} %u packets %u bytes", ipdevice->ifname,
 362                                         stats->tx_packets, stats->tx_bytes);
 363
 364         if (ipdevice->config == NULL)
 365                 return;
 366
 367         ipdevice->rx_bytes = stats->rx_bytes;
 368         ipdevice->tx_bytes = stats->tx_bytes;
 369
 370         __connman_counter_notify(ipdevice->ifname,
 371                                 ipdevice->rx_bytes, ipdevice->tx_bytes);
 372 }
 373
 374 void __connman_ipconfig_newlink(int index, unsigned short type,
 375                                 unsigned int flags, const char *address,
 376                                                         unsigned short mtu,
 377                                                 struct rtnl_link_stats *stats)
 378 {
 379         struct connman_ipdevice *ipdevice;
 380         GList *list;
 381         GString *str;
 382         gboolean up = FALSE, down = FALSE;
 383         gboolean lower_up = FALSE, lower_down = FALSE;
 384
 385         DBG("index %d", index);
 386
 387         if (type == ARPHRD_LOOPBACK)
 388                 return;
 389
 390         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 391         if (ipdevice != NULL)
 392                 goto update;
 393
 394         ipdevice = g_try_new0(struct connman_ipdevice, 1);
 395         if (ipdevice == NULL)
 396                 return;
 397
 398         ipdevice->index = index;
 399         ipdevice->ifname = connman_inet_ifname(index);
 400         ipdevice->type = type;
 401
 402         ipdevice->address = g_strdup(address);
 403
 404         g_hash_table_insert(ipdevice_hash, GINT_TO_POINTER(index), ipdevice);
 405
 406         connman_info("%s {create} index %d type %d <%s>", ipdevice->ifname,
 407                                                 index, type, type2str(type));
 408
 409 update:
 410         ipdevice->mtu = mtu;
 411
 412         update_stats(ipdevice, stats);
 413
 414         if (flags == ipdevice->flags)
 415                 return;
 416
 417         if ((ipdevice->flags & IFF_UP) != (flags & IFF_UP)) {
 418                 if (flags & IFF_UP)
 419                         up = TRUE;
 420                 else
 421                         down = TRUE;
 422         }
 423
 424         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) !=
 425                                 (flags & (IFF_RUNNING | IFF_LOWER_UP))) {
 426                 if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) ==
 427                                         (IFF_RUNNING | IFF_LOWER_UP))
 428                         lower_up = TRUE;
 429                 else if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) == 0)
 430                         lower_down = TRUE;
 431         }
 432
 433         ipdevice->flags = flags;
 434
 435         str = g_string_new(NULL);
 436         if (str == NULL)
 437                 return;
 438
 439         if (flags & IFF_UP)
 440                 g_string_append(str, "UP");
 441         else
 442                 g_string_append(str, "DOWN");
 443
 444         if (flags & IFF_RUNNING)
 445                 g_string_append(str, ",RUNNING");
 446
 447         if (flags & IFF_LOWER_UP)
 448                 g_string_append(str, ",LOWER_UP");
 449
 450         connman_info("%s {update} flags %u <%s>", ipdevice->ifname,
 451                                                         flags, str->str);
 452
 453         g_string_free(str, TRUE);
 454
 455         for (list = g_list_first(ipconfig_list); list;
 456                                                 list = g_list_next(list)) {
 457                 struct connman_ipconfig *ipconfig = list->data;
 458
 459                 if (index != ipconfig->index)
 460                         continue;
 461
 462                 if (ipconfig->ops == NULL)
 463                         continue;
 464
 465                 if (up == TRUE && ipconfig->ops->up)
 466                         ipconfig->ops->up(ipconfig);
 467                 if (lower_up == TRUE && ipconfig->ops->lower_up)
 468                         ipconfig->ops->lower_up(ipconfig);
 469
 470                 if (lower_down == TRUE && ipconfig->ops->lower_down)
 471                         ipconfig->ops->lower_down(ipconfig);
 472                 if (down == TRUE && ipconfig->ops->down)
 473                         ipconfig->ops->down(ipconfig);
 474         }
 475
 476         if (lower_up)
 477                 __connman_ipconfig_lower_up(ipdevice);
 478         if (lower_down)
 479                 __connman_ipconfig_lower_down(ipdevice);
 480 }
 481
 482 void __connman_ipconfig_dellink(int index, struct rtnl_link_stats *stats)
 483 {
 484         struct connman_ipdevice *ipdevice;
 485         GList *list;
 486
 487         DBG("index %d", index);
 488
 489         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 490         if (ipdevice == NULL)
 491                 return;
 492
 493         update_stats(ipdevice, stats);
 494
 495         for (list = g_list_first(ipconfig_list); list;
 496                                                 list = g_list_next(list)) {
 497                 struct connman_ipconfig *ipconfig = list->data;
 498
 499                 if (index != ipconfig->index)
 500                         continue;
 501
 502                 ipconfig->index = -1;
 503
 504                 if (ipconfig->ops == NULL)
 505                         continue;
 506
 507                 if (ipconfig->ops->lower_down)
 508                         ipconfig->ops->lower_down(ipconfig);
 509                 if (ipconfig->ops->down)
 510                         ipconfig->ops->down(ipconfig);
 511         }
 512
 513         __connman_ipconfig_lower_down(ipdevice);
 514
 515         g_hash_table_remove(ipdevice_hash, GINT_TO_POINTER(index));
 516 }
 517
 518 void __connman_ipconfig_newaddr(int index, const char *label,
 519                                 unsigned char prefixlen, const char *address)
 520 {
 521         struct connman_ipdevice *ipdevice;
 522         struct connman_ipaddress *ipaddress;
 523         GList *list;
 524
 525         DBG("index %d", index);
 526
 527         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 528         if (ipdevice == NULL)
 529                 return;
 530
 531         ipaddress = connman_ipaddress_alloc();
 532         if (ipaddress == NULL)
 533                 return;
 534
 535         ipaddress->prefixlen = prefixlen;
 536         ipaddress->local = g_strdup(address);
 537
 538         ipdevice->address_list = g_slist_append(ipdevice->address_list,
 539                                                                 ipaddress);
 540
 541         connman_info("%s {add} address %s/%u label %s", ipdevice->ifname,
 542                                                 address, prefixlen, label);
 543
 544         if (ipdevice->config != NULL)
 545                 connman_ipaddress_copy(ipdevice->config->system, ipaddress);
 546
 547         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
 548                 return;
 549
 550         if (g_slist_length(ipdevice->address_list) > 1)
 551                 return;
 552
 553         for (list = g_list_first(ipconfig_list); list;
 554                                                 list = g_list_next(list)) {
 555                 struct connman_ipconfig *ipconfig = list->data;
 556
 557                 if (index != ipconfig->index)
 558                         continue;
 559
 560                 if (ipconfig->ops == NULL)
 561                         continue;
 562
 563                 if (ipconfig->ops->ip_bound)
 564                         ipconfig->ops->ip_bound(ipconfig);
 565         }
 566 }
 567
 568 void __connman_ipconfig_deladdr(int index, const char *label,
 569                                 unsigned char prefixlen, const char *address)
 570 {
 571         struct connman_ipdevice *ipdevice;
 572         struct connman_ipaddress *ipaddress;
 573         GList *list;
 574
 575         DBG("index %d", index);
 576
 577         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 578         if (ipdevice == NULL)
 579                 return;
 580
 581         ipaddress = find_ipaddress(ipdevice, prefixlen, address);
 582         if (ipaddress == NULL)
 583                 return;
 584
 585         ipdevice->address_list = g_slist_remove(ipdevice->address_list,
 586                                                                 ipaddress);
 587
 588         connman_ipaddress_free(ipaddress);
 589
 590         connman_info("%s {del} address %s/%u label %s", ipdevice->ifname,
 591                                                 address, prefixlen, label);
 592
 593         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
 594                 return;
 595
 596         if (g_slist_length(ipdevice->address_list) > 0)
 597                 return;
 598
 599         for (list = g_list_first(ipconfig_list); list;
 600                                                 list = g_list_next(list)) {
 601                 struct connman_ipconfig *ipconfig = list->data;
 602
 603                 if (index != ipconfig->index)
 604                         continue;
 605
 606                 if (ipconfig->ops == NULL)
 607                         continue;
 608
 609                 if (ipconfig->ops->ip_release)
 610                         ipconfig->ops->ip_release(ipconfig);
 611         }
 612 }
 613
 614 void __connman_ipconfig_newroute(int index, unsigned char scope,
 615                                         const char *dst, const char *gateway)
 616 {
 617         struct connman_ipdevice *ipdevice;
 618
 619         DBG("index %d", index);
 620
 621         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 622         if (ipdevice == NULL)
 623                 return;
 624
 625         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 626                 GSList *list;
 627
 628                 g_free(ipdevice->gateway);
 629                 ipdevice->gateway = g_strdup(gateway);
 630
 631                 if (ipdevice->config != NULL &&
 632                                         ipdevice->config->system != NULL) {
 633                         g_free(ipdevice->config->system->gateway);
 634                         ipdevice->config->system->gateway = g_strdup(gateway);
 635                 }
 636
 637                 for (list = ipdevice->address_list; list; list = list->next) {
 638                         struct connman_ipaddress *ipaddress = list->data;
 639
 640                         g_free(ipaddress->gateway);
 641                         ipaddress->gateway = g_strdup(gateway);
 642                 }
 643         }
 644
 645         connman_info("%s {add} route %s gw %s scope %u <%s>",
 646                                         ipdevice->ifname, dst, gateway,
 647                                                 scope, scope2str(scope));
 648 }
 649
 650 void __connman_ipconfig_delroute(int index, unsigned char scope,
 651                                         const char *dst, const char *gateway)
 652 {
 653         struct connman_ipdevice *ipdevice;
 654
 655         DBG("index %d", index);
 656
 657         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 658         if (ipdevice == NULL)
 659                 return;
 660
 661         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 662                 GSList *list;
 663
 664                 g_free(ipdevice->gateway);
 665                 ipdevice->gateway = NULL;
 666
 667                 if (ipdevice->config != NULL &&
 668                                         ipdevice->config->system != NULL) {
 669                         g_free(ipdevice->config->system->gateway);
 670                         ipdevice->config->system->gateway = NULL;
 671                 }
 672
 673                 for (list = ipdevice->address_list; list; list = list->next) {
 674                         struct connman_ipaddress *ipaddress = list->data;
 675
 676                         g_free(ipaddress->gateway);
 677                         ipaddress->gateway = NULL;
 678                 }
 679         }
 680
 681         connman_info("%s {del} route %s gw %s scope %u <%s>",
 682                                         ipdevice->ifname, dst, gateway,
 683                                                 scope, scope2str(scope));
 684 }
 685
 686 void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
 687                                                         void *user_data)
 688 {
 689         GList *list, *keys;
 690
 691         keys = g_hash_table_get_keys(ipdevice_hash);
 692         if (keys == NULL)
 693                 return;
 694
 695         for (list = g_list_first(keys); list; list = g_list_next(list)) {
 696                 int index = GPOINTER_TO_INT(list->data);
 697
 698                 function(index, user_data);
 699         }
 700
 701         g_list_free(keys);
 702 }
 703
 704 unsigned short __connman_ipconfig_get_type(int index)
 705 {
 706         struct connman_ipdevice *ipdevice;
 707
 708         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 709         if (ipdevice == NULL)
 710                 return ARPHRD_VOID;
 711
 712         return ipdevice->type;
 713 }
 714
 715 unsigned int __connman_ipconfig_get_flags(int index)
 716 {
 717         struct connman_ipdevice *ipdevice;
 718
 719         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 720         if (ipdevice == NULL)
 721                 return 0;
 722
 723         return ipdevice->flags;
 724 }
 725
 726 const char *__connman_ipconfig_get_gateway(int index)
 727 {
 728         struct connman_ipdevice *ipdevice;
 729
 730         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 731         if (ipdevice == NULL)
 732                 return NULL;
 733
 734         return ipdevice->gateway;
 735 }
 736
 737 void __connman_ipconfig_set_index(struct connman_ipconfig *ipconfig, int index)
 738 {
 739         ipconfig->index = index;
 740 }
 741
 742 /**
 743  * connman_ipconfig_create:
 744  *
 745  * Allocate a new ipconfig structure.
 746  *
 747  * Returns: a newly-allocated #connman_ipconfig structure
 748  */
 749 struct connman_ipconfig *connman_ipconfig_create(int index)
 750 {
 751         struct connman_ipconfig *ipconfig;
 752
 753         DBG("index %d", index);
 754
 755         ipconfig = g_try_new0(struct connman_ipconfig, 1);
 756         if (ipconfig == NULL)
 757                 return NULL;
 758
 759         ipconfig->refcount = 1;
 760
 761         ipconfig->index = index;
 762
 763         ipconfig->address = connman_ipaddress_alloc();
 764         if (ipconfig->address == NULL) {
 765                 g_free(ipconfig);
 766                 return NULL;
 767         }
 768
 769         ipconfig->system = connman_ipaddress_alloc();
 770
 771         DBG("ipconfig %p", ipconfig);
 772
 773         return ipconfig;
 774 }
 775
 776 /**
 777  * connman_ipconfig_clone:
 778  *
 779  * Clone an ipconfig structure and create new reference.
 780  *
 781  * Returns: a newly-allocated #connman_ipconfig structure
 782  */
 783 struct connman_ipconfig *connman_ipconfig_clone(struct connman_ipconfig *ipconfig)
 784 {
 785         struct connman_ipconfig *ipconfig_clone;
 786
 787         DBG("ipconfig %p", ipconfig);
 788
 789         ipconfig_clone = g_try_new0(struct connman_ipconfig, 1);
 790         if (ipconfig_clone == NULL)
 791                 return NULL;
 792
 793         ipconfig_clone->refcount = 1;
 794
 795         ipconfig_clone->origin = connman_ipconfig_ref(ipconfig);
 796
 797         ipconfig_clone->index = -1;
 798
 799         return ipconfig_clone;
 800 }
 801
 802 /**
 803  * connman_ipconfig_ref:
 804  * @ipconfig: ipconfig structure
 805  *
 806  * Increase reference counter of ipconfig
 807  */
 808 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
 809 {
 810         g_atomic_int_inc(&ipconfig->refcount);
 811
 812         return ipconfig;
 813 }
 814
 815 /**
 816  * connman_ipconfig_unref:
 817  * @ipconfig: ipconfig structure
 818  *
 819  * Decrease reference counter of ipconfig
 820  */
 821 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
 822 {
 823         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
 824                 __connman_ipconfig_disable(ipconfig);
 825
 826                 connman_ipconfig_set_ops(ipconfig, NULL);
 827
 828                 if (ipconfig->origin != NULL) {
 829                         connman_ipconfig_unref(ipconfig->origin);
 830                         ipconfig->origin = NULL;
 831                 }
 832
 833                 connman_ipaddress_free(ipconfig->system);
 834                 connman_ipaddress_free(ipconfig->address);
 835                 g_free(ipconfig);
 836         }
 837 }
 838
 839 /**
 840  * connman_ipconfig_get_data:
 841  * @ipconfig: ipconfig structure
 842  *
 843  * Get private data pointer
 844  */
 845 void *connman_ipconfig_get_data(struct connman_ipconfig *ipconfig)
 846 {
 847         return ipconfig->ops_data;
 848 }
 849
 850 /**
 851  * connman_ipconfig_set_data:
 852  * @ipconfig: ipconfig structure
 853  * @data: data pointer
 854  *
 855  * Set private data pointer
 856  */
 857 void connman_ipconfig_set_data(struct connman_ipconfig *ipconfig, void *data)
 858 {
 859         ipconfig->ops_data = data;
 860 }
 861
 862 /**
 863  * connman_ipconfig_get_index:
 864  * @ipconfig: ipconfig structure
 865  *
 866  * Get interface index
 867  */
 868 int connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 869 {
 870         if (ipconfig == NULL)
 871                 return -1;
 872
 873         if (ipconfig->origin != NULL)
 874                 return ipconfig->origin->index;
 875
 876         return ipconfig->index;
 877 }
 878
 879 /**
 880  * connman_ipconfig_get_ifname:
 881  * @ipconfig: ipconfig structure
 882  *
 883  * Get interface name
 884  */
 885 const char *connman_ipconfig_get_ifname(struct connman_ipconfig *ipconfig)
 886 {
 887         struct connman_ipdevice *ipdevice;
 888
 889         if (ipconfig == NULL)
 890                 return NULL;
 891
 892         if (ipconfig->index < 0)
 893                 return NULL;
 894
 895         ipdevice = g_hash_table_lookup(ipdevice_hash,
 896                                         GINT_TO_POINTER(ipconfig->index));
 897         if (ipdevice == NULL)
 898                 return NULL;
 899
 900         return ipdevice->ifname;
 901 }
 902
 903 /**
 904  * connman_ipconfig_set_ops:
 905  * @ipconfig: ipconfig structure
 906  * @ops: operation callbacks
 907  *
 908  * Set the operation callbacks
 909  */
 910 void connman_ipconfig_set_ops(struct connman_ipconfig *ipconfig,
 911                                 const struct connman_ipconfig_ops *ops)
 912 {
 913         ipconfig->ops = ops;
 914 }
 915
 916 /**
 917  * connman_ipconfig_set_method:
 918  * @ipconfig: ipconfig structure
 919  * @method: configuration method
 920  *
 921  * Set the configuration method
 922  */
 923 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 924                                         enum connman_ipconfig_method method)
 925 {
 926         ipconfig->method = method;
 927
 928         return 0;
 929 }
 930
 931 enum connman_ipconfig_method __connman_ipconfig_get_method(struct connman_ipconfig *ipconfig)
 932 {
 933         if (ipconfig == NULL)
 934                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 935
 936         return ipconfig->method;
 937 }
 938
 939 /**
 940  * connman_ipconfig_bind:
 941  * @ipconfig: ipconfig structure
 942  * @ipaddress: ipaddress structure
 943  *
 944  * Bind IP address details to configuration
 945  */
 946 void connman_ipconfig_bind(struct connman_ipconfig *ipconfig,
 947                                         struct connman_ipaddress *ipaddress)
 948 {
 949         struct connman_ipconfig *origin;
 950
 951         origin = ipconfig->origin ? ipconfig->origin : ipconfig;
 952
 953         connman_ipaddress_copy(origin->address, ipaddress);
 954
 955         connman_inet_set_address(origin->index, origin->address);
 956 }
 957
 958 /* FIXME: The element soulution should be removed in the future */
 959 int __connman_ipconfig_set_gateway(struct connman_ipconfig *ipconfig,
 960                                                 struct connman_element *parent)
 961 {
 962         struct connman_element *connection;
 963
 964         connection = connman_element_create(NULL);
 965
 966         connection->type  = CONNMAN_ELEMENT_TYPE_CONNECTION;
 967         connection->index = ipconfig->index;
 968         connection->ipv4.gateway = ipconfig->address->gateway;
 969
 970         if (connman_element_register(connection, parent) < 0)
 971                 connman_element_unref(connection);
 972
 973         return 0;
 974 }
 975
 976 int __connman_ipconfig_set_address(struct connman_ipconfig *ipconfig)
 977 {
 978         DBG("");
 979
 980         switch (ipconfig->method) {
 981         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 982         case CONNMAN_IPCONFIG_METHOD_OFF:
 983         case CONNMAN_IPCONFIG_METHOD_FIXED:
 984         case CONNMAN_IPCONFIG_METHOD_DHCP:
 985                 break;
 986         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 987                 return connman_inet_set_address(ipconfig->index,
 988                                                 ipconfig->address);
 989         }
 990
 991         return 0;
 992 }
 993
 994 int __connman_ipconfig_clear_address(struct connman_ipconfig *ipconfig)
 995 {
 996         DBG("");
 997
 998         if (ipconfig == NULL)
 999                 return 0;
1000
1001         DBG("method %d", ipconfig->method);
1002
1003         switch (ipconfig->method) {
1004         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1005         case CONNMAN_IPCONFIG_METHOD_OFF:
1006         case CONNMAN_IPCONFIG_METHOD_FIXED:
1007         case CONNMAN_IPCONFIG_METHOD_DHCP:
1008                 break;
1009         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1010                 return connman_inet_clear_address(ipconfig->index);
1011         }
1012
1013         return 0;
1014
1015 }
1016
1017 int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
1018 {
1019         struct connman_ipdevice *ipdevice;
1020
1021         DBG("ipconfig %p", ipconfig);
1022
1023         if (ipconfig == NULL || ipconfig->index < 0)
1024                 return -ENODEV;
1025
1026         ipdevice = g_hash_table_lookup(ipdevice_hash,
1027                                         GINT_TO_POINTER(ipconfig->index));
1028         if (ipdevice == NULL)
1029                 return -ENXIO;
1030
1031         if (ipdevice->config == ipconfig)
1032                 return -EALREADY;
1033
1034         if (ipdevice->config != NULL) {
1035                 ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
1036
1037                 connman_ipaddress_clear(ipdevice->config->system);
1038
1039                 connman_ipconfig_unref(ipdevice->config);
1040         }
1041
1042         ipdevice->config = connman_ipconfig_ref(ipconfig);
1043
1044         ipconfig_list = g_list_append(ipconfig_list, ipconfig);
1045
1046         return 0;
1047 }
1048
1049 int __connman_ipconfig_disable(struct connman_ipconfig *ipconfig)
1050 {
1051         struct connman_ipdevice *ipdevice;
1052
1053         DBG("ipconfig %p", ipconfig);
1054
1055         if (ipconfig == NULL || ipconfig->index < 0)
1056                 return -ENODEV;
1057
1058         ipdevice = g_hash_table_lookup(ipdevice_hash,
1059                                         GINT_TO_POINTER(ipconfig->index));
1060         if (ipdevice == NULL)
1061                 return -ENXIO;
1062
1063         if (ipdevice->config == NULL || ipdevice->config != ipconfig)
1064                 return -EINVAL;
1065
1066         ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
1067
1068         connman_ipaddress_clear(ipdevice->config->system);
1069
1070         connman_ipconfig_unref(ipdevice->config);
1071         ipdevice->config = NULL;
1072
1073         return 0;
1074 }
1075
1076 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
1077 {
1078         switch (method) {
1079         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1080                 break;
1081         case CONNMAN_IPCONFIG_METHOD_OFF:
1082                 return "off";
1083         case CONNMAN_IPCONFIG_METHOD_FIXED:
1084                 return "fixed";
1085         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1086                 return "manual";
1087         case CONNMAN_IPCONFIG_METHOD_DHCP:
1088                 return "dhcp";
1089         }
1090
1091         return NULL;
1092 }
1093
1094 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
1095 {
1096         if (g_strcmp0(method, "off") == 0)
1097                 return CONNMAN_IPCONFIG_METHOD_OFF;
1098         else if (g_strcmp0(method, "fixed") == 0)
1099                 return CONNMAN_IPCONFIG_METHOD_FIXED;
1100         else if (g_strcmp0(method, "manual") == 0)
1101                 return CONNMAN_IPCONFIG_METHOD_MANUAL;
1102         else if (g_strcmp0(method, "dhcp") == 0)
1103                 return CONNMAN_IPCONFIG_METHOD_DHCP;
1104         else
1105                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1106 }
1107
1108 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
1109                                                         DBusMessageIter *iter)
1110 {
1111         const char *str;
1112
1113         str = __connman_ipconfig_method2string(ipconfig->method);
1114         if (str == NULL)
1115                 return;
1116
1117         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1118
1119         if (ipconfig->system == NULL)
1120                 return;
1121
1122         if (ipconfig->system->local != NULL) {
1123                 in_addr_t addr;
1124                 struct in_addr netmask;
1125                 char *mask;
1126
1127                 connman_dbus_dict_append_basic(iter, "Address",
1128                                 DBUS_TYPE_STRING, &ipconfig->system->local);
1129
1130                 addr = 0xffffffff << (32 - ipconfig->system->prefixlen);
1131                 netmask.s_addr = htonl(addr);
1132                 mask = inet_ntoa(netmask);
1133                 connman_dbus_dict_append_basic(iter, "Netmask",
1134                                                 DBUS_TYPE_STRING, &mask);
1135         }
1136
1137         if (ipconfig->system->gateway != NULL)
1138                 connman_dbus_dict_append_basic(iter, "Gateway",
1139                                 DBUS_TYPE_STRING, &ipconfig->system->gateway);
1140 }
1141
1142 void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
1143                                                         DBusMessageIter *iter)
1144 {
1145         const char *str;
1146
1147         str = __connman_ipconfig_method2string(ipconfig->method);
1148         if (str == NULL)
1149                 return;
1150
1151         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1152
1153         switch (ipconfig->method) {
1154         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1155         case CONNMAN_IPCONFIG_METHOD_OFF:
1156         case CONNMAN_IPCONFIG_METHOD_FIXED:
1157         case CONNMAN_IPCONFIG_METHOD_DHCP:
1158                 return;
1159         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1160                 break;
1161         }
1162
1163         if (ipconfig->address == NULL)
1164                 return;
1165
1166         if (ipconfig->address->local != NULL) {
1167                 in_addr_t addr;
1168                 struct in_addr netmask;
1169                 char *mask;
1170
1171                 connman_dbus_dict_append_basic(iter, "Address",
1172                                 DBUS_TYPE_STRING, &ipconfig->address->local);
1173
1174                 addr = 0xffffffff << (32 - ipconfig->address->prefixlen);
1175                 netmask.s_addr = htonl(addr);
1176                 mask = inet_ntoa(netmask);
1177                 connman_dbus_dict_append_basic(iter, "Netmask",
1178                                                 DBUS_TYPE_STRING, &mask);
1179         }
1180
1181         if (ipconfig->address->gateway != NULL)
1182                 connman_dbus_dict_append_basic(iter, "Gateway",
1183                                 DBUS_TYPE_STRING, &ipconfig->address->gateway);
1184 }
1185
1186 int __connman_ipconfig_set_ipv4config(struct connman_ipconfig *ipconfig,
1187                                                         DBusMessageIter *array)
1188 {
1189         enum connman_ipconfig_method method = CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1190         const char *address = NULL, *netmask = NULL, *gateway = NULL;
1191         DBusMessageIter dict;
1192
1193         DBG("ipconfig %p", ipconfig);
1194
1195         if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
1196                 return -EINVAL;
1197
1198         dbus_message_iter_recurse(array, &dict);
1199
1200         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1201                 DBusMessageIter entry;
1202                 const char *key;
1203                 int type;
1204
1205                 dbus_message_iter_recurse(&dict, &entry);
1206
1207                 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
1208                         return -EINVAL;
1209
1210                 dbus_message_iter_get_basic(&entry, &key);
1211                 dbus_message_iter_next(&entry);
1212
1213                 type = dbus_message_iter_get_arg_type(&entry);
1214
1215                 if (g_str_equal(key, "Method") == TRUE) {
1216                         const char *str;
1217
1218                         if (type != DBUS_TYPE_STRING)
1219                                 return -EINVAL;
1220
1221                         dbus_message_iter_get_basic(&entry, &str);
1222                         method = __connman_ipconfig_string2method(str);
1223                 } else if (g_str_equal(key, "Address") == TRUE) {
1224                         if (type != DBUS_TYPE_STRING)
1225                                 return -EINVAL;
1226
1227                         dbus_message_iter_get_basic(&entry, &address);
1228                 } else if (g_str_equal(key, "Netmask") == TRUE) {
1229                         if (type != DBUS_TYPE_STRING)
1230                                 return -EINVAL;
1231
1232                         dbus_message_iter_get_basic(&entry, &netmask);
1233                 } else if (g_str_equal(key, "Gateway") == TRUE) {
1234                         if (type != DBUS_TYPE_STRING)
1235                                 return -EINVAL;
1236
1237                         dbus_message_iter_get_basic(&entry, &gateway);
1238                 }
1239                 dbus_message_iter_next(&dict);
1240         }
1241
1242         DBG("method %d address %s netmask %s gateway %s",
1243                                 method, address, netmask, gateway);
1244
1245         switch (method) {
1246         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1247         case CONNMAN_IPCONFIG_METHOD_OFF:
1248         case CONNMAN_IPCONFIG_METHOD_FIXED:
1249                 return -EINVAL;
1250
1251         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1252                 if (address == NULL)
1253                         return -EINVAL;
1254
1255                 ipconfig->method = method;
1256                 connman_ipaddress_set(ipconfig->address,
1257                                 address, netmask, gateway);
1258                 break;
1259
1260         case CONNMAN_IPCONFIG_METHOD_DHCP:
1261                 if (ipconfig->method == method)
1262                         return 0;
1263
1264                 ipconfig->method = method;
1265                 break;
1266         }
1267
1268         return 0;
1269 }
1270
1271 void __connman_ipconfig_append_proxy(struct connman_ipconfig *ipconfig,
1272                                                         DBusMessageIter *iter)
1273 {
1274         const char *method = "direct";
1275
1276         connman_dbus_dict_append_basic(iter, "Method",
1277                                                 DBUS_TYPE_STRING, &method);
1278 }
1279
1280 void __connman_ipconfig_append_ethernet(struct connman_ipconfig *ipconfig,
1281                                                         DBusMessageIter *iter)
1282 {
1283         struct connman_ipdevice *ipdevice;
1284         const char *method = "auto";
1285
1286         connman_dbus_dict_append_basic(iter, "Method",
1287                                                 DBUS_TYPE_STRING, &method);
1288
1289         ipdevice = g_hash_table_lookup(ipdevice_hash,
1290                                         GINT_TO_POINTER(ipconfig->index));
1291         if (ipdevice == NULL)
1292                 return;
1293
1294         if (ipdevice->ifname != NULL)
1295                 connman_dbus_dict_append_basic(iter, "Interface",
1296                                         DBUS_TYPE_STRING, &ipdevice->ifname);
1297
1298         if (ipdevice->address != NULL)
1299                 connman_dbus_dict_append_basic(iter, "Address",
1300                                         DBUS_TYPE_STRING, &ipdevice->address);
1301
1302         if (ipdevice->mtu > 0)
1303                 connman_dbus_dict_append_basic(iter, "MTU",
1304                                         DBUS_TYPE_UINT16, &ipdevice->mtu);
1305 }
1306
1307 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
1308                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1309 {
1310         const char *method;
1311         char *key;
1312
1313         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1314
1315         key = g_strdup_printf("%smethod", prefix);
1316         method = g_key_file_get_string(keyfile, identifier, key, NULL);
1317         if (method == NULL)
1318                 ipconfig->method = CONNMAN_IPCONFIG_METHOD_DHCP;
1319         else
1320                 ipconfig->method = __connman_ipconfig_string2method(method);
1321         g_free(key);
1322
1323         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1324         ipconfig->address->prefixlen = g_key_file_get_integer(
1325                                 keyfile, identifier, key, NULL);
1326         g_free(key);
1327
1328         key = g_strdup_printf("%slocal_address", prefix);
1329         ipconfig->address->local = g_key_file_get_string(
1330                         keyfile, identifier, key, NULL);
1331         g_free(key);
1332
1333         key = g_strdup_printf("%speer_address", prefix);
1334         ipconfig->address->peer = g_key_file_get_string(
1335                                 keyfile, identifier, key, NULL);
1336         g_free(key);
1337
1338         key = g_strdup_printf("%sbroadcast_address", prefix);
1339         ipconfig->address->broadcast = g_key_file_get_string(
1340                                 keyfile, identifier, key, NULL);
1341         g_free(key);
1342
1343         key = g_strdup_printf("%sgateway", prefix);
1344         ipconfig->address->gateway = g_key_file_get_string(
1345                                 keyfile, identifier, key, NULL);
1346         g_free(key);
1347
1348         return 0;
1349 }
1350
1351 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
1352                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1353 {
1354         const char *method;
1355         char *key;
1356
1357         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1358
1359         method = __connman_ipconfig_method2string(ipconfig->method);
1360
1361         key = g_strdup_printf("%smethod", prefix);
1362         g_key_file_set_string(keyfile, identifier, key, method);
1363         g_free(key);
1364
1365         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1366         g_key_file_set_integer(keyfile, identifier,
1367                         key, ipconfig->address->prefixlen);
1368         g_free(key);
1369
1370         key = g_strdup_printf("%slocal_address", prefix);
1371         if (ipconfig->address->local != NULL)
1372                 g_key_file_set_string(keyfile, identifier,
1373                                 key, ipconfig->address->local);
1374         g_free(key);
1375
1376         key = g_strdup_printf("%speer_address", prefix);
1377         if (ipconfig->address->peer != NULL)
1378                 g_key_file_set_string(keyfile, identifier,
1379                                 key, ipconfig->address->peer);
1380         g_free(key);
1381
1382         key = g_strdup_printf("%sbroadcast_address", prefix);
1383         if (ipconfig->address->broadcast != NULL)
1384                 g_key_file_set_string(keyfile, identifier,
1385                         key, ipconfig->address->broadcast);
1386         g_free(key);
1387
1388         key = g_strdup_printf("%sgateway", prefix);
1389         if (ipconfig->address->gateway != NULL)
1390                 g_key_file_set_string(keyfile, identifier,
1391                         key, ipconfig->address->gateway);
1392         g_free(key);
1393
1394         return 0;
1395 }
1396
1397 int __connman_ipconfig_init(void)
1398 {
1399         DBG("");
1400
1401         ipdevice_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1402                                                         NULL, free_ipdevice);
1403
1404         return 0;
1405 }
1406
1407 void __connman_ipconfig_cleanup(void)
1408 {
1409         DBG("");
1410
1411         g_hash_table_destroy(ipdevice_hash);
1412         ipdevice_hash = NULL;
1413 }