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);
  94 }
  95
  96 static unsigned char netmask2prefixlen(const char *netmask)
  97 {
  98         unsigned char bits = 0;
  99         in_addr_t mask = inet_network(netmask);
 100         in_addr_t host = ~mask;
 101
 102         /* a valid netmask must be 2^n - 1 */
 103         if ((host & (host + 1)) != 0)
 104                 return -1;
 105
 106         for (; mask; mask <<= 1)
 107                 ++bits;
 108
 109         return bits;
 110 }
 111
 112 void connman_ipaddress_set(struct connman_ipaddress *ipaddress,
 113                                 const char *address, const char *netmask)
 114 {
 115         if (ipaddress == NULL)
 116                 return;
 117
 118         if (netmask != NULL)
 119                 ipaddress->prefixlen = netmask2prefixlen(netmask);
 120         else
 121                 ipaddress->prefixlen = 32;
 122
 123         g_free(ipaddress->local);
 124         ipaddress->local = g_strdup(address);
 125 }
 126
 127 void connman_ipaddress_clear(struct connman_ipaddress *ipaddress)
 128 {
 129         if (ipaddress == NULL)
 130                 return;
 131
 132         ipaddress->prefixlen = 0;
 133
 134         g_free(ipaddress->local);
 135         ipaddress->local = NULL;
 136
 137         g_free(ipaddress->peer);
 138         ipaddress->peer = NULL;
 139
 140         g_free(ipaddress->broadcast);
 141         ipaddress->broadcast = NULL;
 142 }
 143
 144 void connman_ipaddress_copy(struct connman_ipaddress *ipaddress,
 145                                         struct connman_ipaddress *source)
 146 {
 147         if (ipaddress == NULL || source == NULL)
 148                 return;
 149
 150         ipaddress->prefixlen = source->prefixlen;
 151
 152         g_free(ipaddress->local);
 153         ipaddress->local = g_strdup(source->local);
 154
 155         g_free(ipaddress->peer);
 156         ipaddress->peer = g_strdup(source->peer);
 157
 158         g_free(ipaddress->broadcast);
 159         ipaddress->broadcast = g_strdup(source->broadcast);
 160 }
 161
 162 static void free_address_list(struct connman_ipdevice *ipdevice)
 163 {
 164         GSList *list;
 165
 166         for (list = ipdevice->address_list; list; list = list->next) {
 167                 struct connman_ipaddress *ipaddress = list->data;
 168
 169                 connman_ipaddress_free(ipaddress);
 170                 list->data = NULL;
 171         }
 172
 173         g_slist_free(ipdevice->address_list);
 174         ipdevice->address_list = NULL;
 175 }
 176
 177 static struct connman_ipaddress *find_ipaddress(struct connman_ipdevice *ipdevice,
 178                                 unsigned char prefixlen, const char *local)
 179 {
 180         GSList *list;
 181
 182         for (list = ipdevice->address_list; list; list = list->next) {
 183                 struct connman_ipaddress *ipaddress = list->data;
 184
 185                 if (g_strcmp0(ipaddress->local, local) == 0 &&
 186                                         ipaddress->prefixlen == prefixlen)
 187                         return ipaddress;
 188         }
 189
 190         return NULL;
 191 }
 192
 193 static const char *type2str(unsigned short type)
 194 {
 195         switch (type) {
 196         case ARPHRD_ETHER:
 197                 return "ETHER";
 198         case ARPHRD_LOOPBACK:
 199                 return "LOOPBACK";
 200         case ARPHRD_PPP:
 201                 return "PPP";
 202         case ARPHRD_NONE:
 203                 return "NONE";
 204         case ARPHRD_VOID:
 205                 return "VOID";
 206         }
 207
 208         return "";
 209 }
 210
 211 static const char *scope2str(unsigned char scope)
 212 {
 213         switch (scope) {
 214         case 0:
 215                 return "UNIVERSE";
 216         case 253:
 217                 return "LINK";
 218         }
 219
 220         return "";
 221 }
 222
 223 static void free_ipdevice(gpointer data)
 224 {
 225         struct connman_ipdevice *ipdevice = data;
 226
 227         connman_info("%s {remove} index %d", ipdevice->ifname,
 228                                                         ipdevice->index);
 229
 230         if (ipdevice->config != NULL)
 231                 connman_ipconfig_unref(ipdevice->config);
 232
 233         free_address_list(ipdevice);
 234         g_free(ipdevice->gateway);
 235
 236         g_free(ipdevice->address);
 237         g_free(ipdevice->ifname);
 238         g_free(ipdevice);
 239 }
 240
 241 static GSList *driver_list = NULL;
 242
 243 static gint compare_priority(gconstpointer a, gconstpointer b)
 244 {
 245         const struct connman_ipconfig_driver *driver1 = a;
 246         const struct connman_ipconfig_driver *driver2 = b;
 247
 248         return driver2->priority - driver1->priority;
 249 }
 250
 251 /**
 252  * connman_ipconfig_driver_register:
 253  * @driver: IP configuration driver
 254  *
 255  * Register a new IP configuration driver
 256  *
 257  * Returns: %0 on success
 258  */
 259 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 260 {
 261         DBG("driver %p name %s", driver, driver->name);
 262
 263         driver_list = g_slist_insert_sorted(driver_list, driver,
 264                                                         compare_priority);
 265
 266         return 0;
 267 }
 268
 269 /**
 270  * connman_ipconfig_driver_unregister:
 271  * @driver: IP configuration driver
 272  *
 273  * Remove a previously registered IP configuration driver.
 274  */
 275 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 276 {
 277         DBG("driver %p name %s", driver, driver->name);
 278
 279         driver_list = g_slist_remove(driver_list, driver);
 280 }
 281
 282 static void __connman_ipconfig_lower_up(struct connman_ipdevice *ipdevice)
 283 {
 284         GSList *list;
 285
 286         DBG("ipconfig %p", ipdevice->config);
 287
 288         if (ipdevice->config == NULL)
 289                 return;
 290
 291         switch (ipdevice->config->method) {
 292         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 293         case CONNMAN_IPCONFIG_METHOD_OFF:
 294         case CONNMAN_IPCONFIG_METHOD_FIXED:
 295         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 296                 return;
 297         case CONNMAN_IPCONFIG_METHOD_DHCP:
 298                 break;
 299         }
 300
 301         if (ipdevice->driver != NULL)
 302                 return;
 303
 304         ipdevice->driver_config = connman_ipconfig_clone(ipdevice->config);
 305         if (ipdevice->driver_config == NULL)
 306                 return;
 307
 308         for (list = driver_list; list; list = list->next) {
 309                 struct connman_ipconfig_driver *driver = list->data;
 310
 311                 if (driver->request(ipdevice->driver_config) == 0) {
 312                         ipdevice->driver = driver;
 313                         break;
 314                 }
 315         }
 316
 317         if (ipdevice->driver == NULL) {
 318                 connman_ipconfig_unref(ipdevice->driver_config);
 319                 ipdevice->driver_config = NULL;
 320         }
 321 }
 322
 323 static void __connman_ipconfig_lower_down(struct connman_ipdevice *ipdevice)
 324 {
 325         DBG("ipconfig %p", ipdevice->config);
 326
 327         if (ipdevice->config == NULL)
 328                 return;
 329
 330         if (ipdevice->driver == NULL)
 331                 return;
 332
 333         ipdevice->driver->release(ipdevice->driver_config);
 334
 335         ipdevice->driver = NULL;
 336
 337         connman_ipconfig_unref(ipdevice->driver_config);
 338         ipdevice->driver_config = NULL;
 339
 340         connman_inet_clear_address(ipdevice->index);
 341 }
 342
 343 static void update_stats(struct connman_ipdevice *ipdevice,
 344                                                 struct rtnl_link_stats *stats)
 345 {
 346         if (stats->rx_packets == 0 && stats->tx_packets == 0)
 347                 return;
 348
 349         connman_info("%s {RX} %u packets %u bytes", ipdevice->ifname,
 350                                         stats->rx_packets, stats->rx_bytes);
 351         connman_info("%s {TX} %u packets %u bytes", ipdevice->ifname,
 352                                         stats->tx_packets, stats->tx_bytes);
 353
 354         if (ipdevice->config == NULL)
 355                 return;
 356
 357         ipdevice->rx_bytes = stats->rx_bytes;
 358         ipdevice->tx_bytes = stats->tx_bytes;
 359
 360         __connman_counter_notify(ipdevice->rx_bytes, ipdevice->tx_bytes);
 361 }
 362
 363 void __connman_ipconfig_newlink(int index, unsigned short type,
 364                                 unsigned int flags, const char *address,
 365                                                         unsigned short mtu,
 366                                                 struct rtnl_link_stats *stats)
 367 {
 368         struct connman_ipdevice *ipdevice;
 369         GList *list;
 370         GString *str;
 371         gboolean up = FALSE, down = FALSE;
 372         gboolean lower_up = FALSE, lower_down = FALSE;
 373         char *ifname;
 374
 375         DBG("index %d", index);
 376
 377         if (type == ARPHRD_LOOPBACK)
 378                 return;
 379
 380         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 381         if (ipdevice != NULL)
 382                 goto update;
 383
 384         ifname = connman_inet_ifname(index);
 385
 386         if (__connman_element_device_isfiltered(ifname) == TRUE) {
 387                 connman_info("Ignoring interface %s (filtered)", ifname);
 388                 g_free(ifname);
 389                 return;
 390         }
 391
 392         ipdevice = g_try_new0(struct connman_ipdevice, 1);
 393         if (ipdevice == NULL) {
 394                 g_free(ifname);
 395                 return;
 396         }
 397
 398         ipdevice->index = index;
 399         ipdevice->ifname = ifname;
 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                 g_free(ipdevice->gateway);
 627                 ipdevice->gateway = g_strdup(gateway);
 628         }
 629
 630         connman_info("%s {add} route %s gw %s scope %u <%s>",
 631                                         ipdevice->ifname, dst, gateway,
 632                                                 scope, scope2str(scope));
 633 }
 634
 635 void __connman_ipconfig_delroute(int index, unsigned char scope,
 636                                         const char *dst, const char *gateway)
 637 {
 638         struct connman_ipdevice *ipdevice;
 639
 640         DBG("index %d", index);
 641
 642         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 643         if (ipdevice == NULL)
 644                 return;
 645
 646         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 647                 g_free(ipdevice->gateway);
 648                 ipdevice->gateway = NULL;
 649         }
 650
 651         connman_info("%s {del} route %s gw %s scope %u <%s>",
 652                                         ipdevice->ifname, dst, gateway,
 653                                                 scope, scope2str(scope));
 654 }
 655
 656 void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
 657                                                         void *user_data)
 658 {
 659         GList *list, *keys;
 660
 661         keys = g_hash_table_get_keys(ipdevice_hash);
 662         if (keys == NULL)
 663                 return;
 664
 665         for (list = g_list_first(keys); list; list = g_list_next(list)) {
 666                 int index = GPOINTER_TO_INT(list->data);
 667
 668                 function(index, user_data);
 669         }
 670
 671         g_list_free(keys);
 672 }
 673
 674 unsigned short __connman_ipconfig_get_type(int index)
 675 {
 676         struct connman_ipdevice *ipdevice;
 677
 678         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 679         if (ipdevice == NULL)
 680                 return ARPHRD_VOID;
 681
 682         return ipdevice->type;
 683 }
 684
 685 unsigned int __connman_ipconfig_get_flags(int index)
 686 {
 687         struct connman_ipdevice *ipdevice;
 688
 689         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 690         if (ipdevice == NULL)
 691                 return 0;
 692
 693         return ipdevice->flags;
 694 }
 695
 696 const char *__connman_ipconfig_get_gateway(int index)
 697 {
 698         struct connman_ipdevice *ipdevice;
 699
 700         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 701         if (ipdevice == NULL)
 702                 return NULL;
 703
 704         return ipdevice->gateway;
 705 }
 706
 707 /**
 708  * connman_ipconfig_create:
 709  *
 710  * Allocate a new ipconfig structure.
 711  *
 712  * Returns: a newly-allocated #connman_ipconfig structure
 713  */
 714 struct connman_ipconfig *connman_ipconfig_create(int index)
 715 {
 716         struct connman_ipconfig *ipconfig;
 717
 718         DBG("index %d", index);
 719
 720         ipconfig = g_try_new0(struct connman_ipconfig, 1);
 721         if (ipconfig == NULL)
 722                 return NULL;
 723
 724         ipconfig->refcount = 1;
 725
 726         ipconfig->index = index;
 727
 728         ipconfig->address = connman_ipaddress_alloc();
 729         if (ipconfig->address == NULL) {
 730                 g_free(ipconfig);
 731                 return NULL;
 732         }
 733
 734         ipconfig->system = connman_ipaddress_alloc();
 735
 736         DBG("ipconfig %p", ipconfig);
 737
 738         return ipconfig;
 739 }
 740
 741 /**
 742  * connman_ipconfig_clone:
 743  *
 744  * Clone an ipconfig structure and create new reference.
 745  *
 746  * Returns: a newly-allocated #connman_ipconfig structure
 747  */
 748 struct connman_ipconfig *connman_ipconfig_clone(struct connman_ipconfig *ipconfig)
 749 {
 750         struct connman_ipconfig *ipconfig_clone;
 751
 752         DBG("ipconfig %p", ipconfig);
 753
 754         ipconfig_clone = g_try_new0(struct connman_ipconfig, 1);
 755         if (ipconfig_clone == NULL)
 756                 return NULL;
 757
 758         ipconfig_clone->refcount = 1;
 759
 760         ipconfig_clone->origin = connman_ipconfig_ref(ipconfig);
 761
 762         ipconfig_clone->index = -1;
 763
 764         return ipconfig_clone;
 765 }
 766
 767 /**
 768  * connman_ipconfig_ref:
 769  * @ipconfig: ipconfig structure
 770  *
 771  * Increase reference counter of ipconfig
 772  */
 773 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
 774 {
 775         g_atomic_int_inc(&ipconfig->refcount);
 776
 777         return ipconfig;
 778 }
 779
 780 /**
 781  * connman_ipconfig_unref:
 782  * @ipconfig: ipconfig structure
 783  *
 784  * Decrease reference counter of ipconfig
 785  */
 786 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
 787 {
 788         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
 789                 __connman_ipconfig_disable(ipconfig);
 790
 791                 connman_ipconfig_set_ops(ipconfig, NULL);
 792
 793                 if (ipconfig->origin != NULL) {
 794                         connman_ipconfig_unref(ipconfig->origin);
 795                         ipconfig->origin = NULL;
 796                 }
 797
 798                 connman_ipaddress_free(ipconfig->system);
 799                 connman_ipaddress_free(ipconfig->address);
 800                 g_free(ipconfig);
 801         }
 802 }
 803
 804 /**
 805  * connman_ipconfig_get_data:
 806  * @ipconfig: ipconfig structure
 807  *
 808  * Get private data pointer
 809  */
 810 void *connman_ipconfig_get_data(struct connman_ipconfig *ipconfig)
 811 {
 812         return ipconfig->ops_data;
 813 }
 814
 815 /**
 816  * connman_ipconfig_set_data:
 817  * @ipconfig: ipconfig structure
 818  * @data: data pointer
 819  *
 820  * Set private data pointer
 821  */
 822 void connman_ipconfig_set_data(struct connman_ipconfig *ipconfig, void *data)
 823 {
 824         ipconfig->ops_data = data;
 825 }
 826
 827 /**
 828  * connman_ipconfig_get_index:
 829  * @ipconfig: ipconfig structure
 830  *
 831  * Get interface index
 832  */
 833 int connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 834 {
 835         if (ipconfig->origin != NULL)
 836                 return ipconfig->origin->index;
 837
 838         return ipconfig->index;
 839 }
 840
 841 /**
 842  * connman_ipconfig_get_ifname:
 843  * @ipconfig: ipconfig structure
 844  *
 845  * Get interface name
 846  */
 847 const char *connman_ipconfig_get_ifname(struct connman_ipconfig *ipconfig)
 848 {
 849         struct connman_ipdevice *ipdevice;
 850
 851         if (ipconfig->index < 0)
 852                 return NULL;
 853
 854         ipdevice = g_hash_table_lookup(ipdevice_hash,
 855                                         GINT_TO_POINTER(ipconfig->index));
 856         if (ipdevice == NULL)
 857                 return NULL;
 858
 859         return ipdevice->ifname;
 860 }
 861
 862 /**
 863  * connman_ipconfig_set_ops:
 864  * @ipconfig: ipconfig structure
 865  * @ops: operation callbacks
 866  *
 867  * Set the operation callbacks
 868  */
 869 void connman_ipconfig_set_ops(struct connman_ipconfig *ipconfig,
 870                                 const struct connman_ipconfig_ops *ops)
 871 {
 872         ipconfig->ops = ops;
 873 }
 874
 875 /**
 876  * connman_ipconfig_set_method:
 877  * @ipconfig: ipconfig structure
 878  * @method: configuration method
 879  *
 880  * Set the configuration method
 881  */
 882 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 883                                         enum connman_ipconfig_method method)
 884 {
 885         ipconfig->method = method;
 886
 887         return 0;
 888 }
 889
 890 /**
 891  * connman_ipconfig_bind:
 892  * @ipconfig: ipconfig structure
 893  * @ipaddress: ipaddress structure
 894  *
 895  * Bind IP address details to configuration
 896  */
 897 void connman_ipconfig_bind(struct connman_ipconfig *ipconfig,
 898                                         struct connman_ipaddress *ipaddress)
 899 {
 900         struct connman_ipconfig *origin;
 901
 902         origin = ipconfig->origin ? ipconfig->origin : ipconfig;
 903
 904         connman_ipaddress_copy(origin->address, ipaddress);
 905
 906         connman_inet_set_address(origin->index, origin->address);
 907 }
 908
 909 int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
 910 {
 911         struct connman_ipdevice *ipdevice;
 912
 913         DBG("ipconfig %p", ipconfig);
 914
 915         if (ipconfig == NULL || ipconfig->index < 0)
 916                 return -ENODEV;
 917
 918         ipdevice = g_hash_table_lookup(ipdevice_hash,
 919                                         GINT_TO_POINTER(ipconfig->index));
 920         if (ipdevice == NULL)
 921                 return -ENXIO;
 922
 923         if (ipdevice->config == ipconfig)
 924                 return -EALREADY;
 925
 926         if (ipdevice->config != NULL) {
 927                 ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
 928
 929                 connman_ipaddress_clear(ipdevice->config->system);
 930
 931                 connman_ipconfig_unref(ipdevice->config);
 932         }
 933
 934         ipdevice->config = connman_ipconfig_ref(ipconfig);
 935
 936         ipconfig_list = g_list_append(ipconfig_list, ipconfig);
 937
 938         return 0;
 939 }
 940
 941 int __connman_ipconfig_disable(struct connman_ipconfig *ipconfig)
 942 {
 943         struct connman_ipdevice *ipdevice;
 944
 945         DBG("ipconfig %p", ipconfig);
 946
 947         if (ipconfig == NULL || ipconfig->index < 0)
 948                 return -ENODEV;
 949
 950         ipdevice = g_hash_table_lookup(ipdevice_hash,
 951                                         GINT_TO_POINTER(ipconfig->index));
 952         if (ipdevice == NULL)
 953                 return -ENXIO;
 954
 955         if (ipdevice->config == NULL || ipdevice->config != ipconfig)
 956                 return -EINVAL;
 957
 958         ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
 959
 960         connman_ipaddress_clear(ipdevice->config->system);
 961
 962         connman_ipconfig_unref(ipdevice->config);
 963         ipdevice->config = NULL;
 964
 965         return 0;
 966 }
 967
 968 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
 969 {
 970         switch (method) {
 971         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 972                 break;
 973         case CONNMAN_IPCONFIG_METHOD_OFF:
 974                 return "off";
 975         case CONNMAN_IPCONFIG_METHOD_FIXED:
 976                 return "fixed";
 977         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 978                 return "manual";
 979         case CONNMAN_IPCONFIG_METHOD_DHCP:
 980                 return "dhcp";
 981         }
 982
 983         return NULL;
 984 }
 985
 986 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
 987 {
 988         if (g_strcmp0(method, "off") == 0)
 989                 return CONNMAN_IPCONFIG_METHOD_OFF;
 990         else if (g_strcmp0(method, "fixed") == 0)
 991                 return CONNMAN_IPCONFIG_METHOD_FIXED;
 992         else if (g_strcmp0(method, "manual") == 0)
 993                 return CONNMAN_IPCONFIG_METHOD_MANUAL;
 994         else if (g_strcmp0(method, "dhcp") == 0)
 995                 return CONNMAN_IPCONFIG_METHOD_DHCP;
 996         else
 997                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 998 }
 999
1000 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
1001                                                         DBusMessageIter *iter)
1002 {
1003         const char *str;
1004
1005         str = __connman_ipconfig_method2string(ipconfig->method);
1006         if (str == NULL)
1007                 return;
1008
1009         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1010
1011         if (ipconfig->system == NULL)
1012                 return;
1013
1014         if (ipconfig->system->local != NULL) {
1015                 in_addr_t addr;
1016                 struct in_addr netmask;
1017                 char *mask;
1018
1019                 connman_dbus_dict_append_basic(iter, "Address",
1020                                 DBUS_TYPE_STRING, &ipconfig->system->local);
1021
1022                 addr = 0xffffffff << (32 - ipconfig->system->prefixlen);
1023                 netmask.s_addr = htonl(addr);
1024                 mask = inet_ntoa(netmask);
1025                 connman_dbus_dict_append_basic(iter, "Netmask",
1026                                                 DBUS_TYPE_STRING, &mask);
1027         }
1028 }
1029
1030 void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
1031                                                         DBusMessageIter *iter)
1032 {
1033         const char *str;
1034
1035         str = __connman_ipconfig_method2string(ipconfig->method);
1036         if (str == NULL)
1037                 return;
1038
1039         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1040
1041         switch (ipconfig->method) {
1042         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1043         case CONNMAN_IPCONFIG_METHOD_OFF:
1044         case CONNMAN_IPCONFIG_METHOD_FIXED:
1045         case CONNMAN_IPCONFIG_METHOD_DHCP:
1046                 return;
1047         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1048                 break;
1049         }
1050
1051         if (ipconfig->address == NULL)
1052                 return;
1053
1054         if (ipconfig->address->local != NULL) {
1055                 in_addr_t addr;
1056                 struct in_addr netmask;
1057                 char *mask;
1058
1059                 connman_dbus_dict_append_basic(iter, "Address",
1060                                 DBUS_TYPE_STRING, &ipconfig->address->local);
1061
1062                 addr = 0xffffffff << (32 - ipconfig->address->prefixlen);
1063                 netmask.s_addr = htonl(addr);
1064                 mask = inet_ntoa(netmask);
1065                 connman_dbus_dict_append_basic(iter, "Netmask",
1066                                                 DBUS_TYPE_STRING, &mask);
1067         }
1068 }
1069
1070 int __connman_ipconfig_set_ipv4config(struct connman_ipconfig *ipconfig,
1071                                                         DBusMessageIter *array)
1072 {
1073         enum connman_ipconfig_method method = CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1074         const char *address = NULL, *netmask = NULL;
1075         DBusMessageIter dict;
1076
1077         DBG("ipconfig %p", ipconfig);
1078
1079         if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
1080                 return -EINVAL;
1081
1082         dbus_message_iter_recurse(array, &dict);
1083
1084         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1085                 DBusMessageIter entry;
1086                 const char *key;
1087                 int type;
1088
1089                 dbus_message_iter_recurse(&dict, &entry);
1090
1091                 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
1092                         return -EINVAL;
1093
1094                 dbus_message_iter_get_basic(&entry, &key);
1095                 dbus_message_iter_next(&entry);
1096
1097                 type = dbus_message_iter_get_arg_type(&entry);
1098
1099                 if (g_str_equal(key, "Method") == TRUE) {
1100                         const char *str;
1101
1102                         if (type != DBUS_TYPE_STRING)
1103                                 return -EINVAL;
1104
1105                         dbus_message_iter_get_basic(&entry, &str);
1106                         method = __connman_ipconfig_string2method(str);
1107                 } else if (g_str_equal(key, "Address") == TRUE) {
1108                         if (type != DBUS_TYPE_STRING)
1109                                 return -EINVAL;
1110
1111                         dbus_message_iter_get_basic(&entry, &address);
1112                 } else if (g_str_equal(key, "Netmask") == TRUE) {
1113                         if (type != DBUS_TYPE_STRING)
1114                                 return -EINVAL;
1115
1116                         dbus_message_iter_get_basic(&entry, &netmask);
1117                 }
1118
1119                 dbus_message_iter_next(&dict);
1120         }
1121
1122         DBG("method %d address %s netmask %s", method, address, netmask);
1123
1124         switch (method) {
1125         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1126         case CONNMAN_IPCONFIG_METHOD_OFF:
1127         case CONNMAN_IPCONFIG_METHOD_FIXED:
1128                 return -EINVAL;
1129
1130         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1131                 if (address == NULL)
1132                         return -EINVAL;
1133
1134                 ipconfig->method = method;
1135                 connman_ipaddress_set(ipconfig->address, address, netmask);
1136                 break;
1137
1138         case CONNMAN_IPCONFIG_METHOD_DHCP:
1139                 if (ipconfig->method == method)
1140                         return 0;
1141
1142                 ipconfig->method = method;
1143                 break;
1144         }
1145
1146         return 0;
1147 }
1148
1149 void __connman_ipconfig_append_proxy(struct connman_ipconfig *ipconfig,
1150                                                         DBusMessageIter *iter)
1151 {
1152         const char *method = "direct";
1153
1154         connman_dbus_dict_append_basic(iter, "Method",
1155                                                 DBUS_TYPE_STRING, &method);
1156 }
1157
1158 void __connman_ipconfig_append_ethernet(struct connman_ipconfig *ipconfig,
1159                                                         DBusMessageIter *iter)
1160 {
1161         struct connman_ipdevice *ipdevice;
1162         const char *method = "auto";
1163
1164         connman_dbus_dict_append_basic(iter, "Method",
1165                                                 DBUS_TYPE_STRING, &method);
1166
1167         ipdevice = g_hash_table_lookup(ipdevice_hash,
1168                                         GINT_TO_POINTER(ipconfig->index));
1169         if (ipdevice == NULL)
1170                 return;
1171
1172         if (ipdevice->ifname != NULL)
1173                 connman_dbus_dict_append_basic(iter, "Interface",
1174                                         DBUS_TYPE_STRING, &ipdevice->ifname);
1175
1176         if (ipdevice->address != NULL)
1177                 connman_dbus_dict_append_basic(iter, "Address",
1178                                         DBUS_TYPE_STRING, &ipdevice->address);
1179
1180         if (ipdevice->mtu > 0)
1181                 connman_dbus_dict_append_basic(iter, "MTU",
1182                                         DBUS_TYPE_UINT16, &ipdevice->mtu);
1183 }
1184
1185 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
1186                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1187 {
1188         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1189
1190         return 0;
1191 }
1192
1193 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
1194                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1195 {
1196         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1197
1198         return 0;
1199 }
1200
1201 int __connman_ipconfig_init(void)
1202 {
1203         DBG("");
1204
1205         ipdevice_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1206                                                         NULL, free_ipdevice);
1207
1208         return 0;
1209 }
1210
1211 void __connman_ipconfig_cleanup(void)
1212 {
1213         DBG("");
1214
1215         g_hash_table_destroy(ipdevice_hash);
1216         ipdevice_hash = NULL;
1217 }