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         char *ifname;
 385
 386         DBG("index %d", index);
 387
 388         if (type == ARPHRD_LOOPBACK)
 389                 return;
 390
 391         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 392         if (ipdevice != NULL)
 393                 goto update;
 394
 395         ifname = connman_inet_ifname(index);
 396
 397         if (__connman_element_device_isfiltered(ifname) == TRUE) {
 398                 connman_info("Ignoring interface %s (filtered)", ifname);
 399                 g_free(ifname);
 400                 return;
 401         }
 402
 403         ipdevice = g_try_new0(struct connman_ipdevice, 1);
 404         if (ipdevice == NULL) {
 405                 g_free(ifname);
 406                 return;
 407         }
 408
 409         ipdevice->index = index;
 410         ipdevice->ifname = ifname;
 411         ipdevice->type = type;
 412
 413         ipdevice->address = g_strdup(address);
 414
 415         g_hash_table_insert(ipdevice_hash, GINT_TO_POINTER(index), ipdevice);
 416
 417         connman_info("%s {create} index %d type %d <%s>", ipdevice->ifname,
 418                                                 index, type, type2str(type));
 419
 420 update:
 421         ipdevice->mtu = mtu;
 422
 423         update_stats(ipdevice, stats);
 424
 425         if (flags == ipdevice->flags)
 426                 return;
 427
 428         if ((ipdevice->flags & IFF_UP) != (flags & IFF_UP)) {
 429                 if (flags & IFF_UP)
 430                         up = TRUE;
 431                 else
 432                         down = TRUE;
 433         }
 434
 435         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) !=
 436                                 (flags & (IFF_RUNNING | IFF_LOWER_UP))) {
 437                 if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) ==
 438                                         (IFF_RUNNING | IFF_LOWER_UP))
 439                         lower_up = TRUE;
 440                 else if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) == 0)
 441                         lower_down = TRUE;
 442         }
 443
 444         ipdevice->flags = flags;
 445
 446         str = g_string_new(NULL);
 447         if (str == NULL)
 448                 return;
 449
 450         if (flags & IFF_UP)
 451                 g_string_append(str, "UP");
 452         else
 453                 g_string_append(str, "DOWN");
 454
 455         if (flags & IFF_RUNNING)
 456                 g_string_append(str, ",RUNNING");
 457
 458         if (flags & IFF_LOWER_UP)
 459                 g_string_append(str, ",LOWER_UP");
 460
 461         connman_info("%s {update} flags %u <%s>", ipdevice->ifname,
 462                                                         flags, str->str);
 463
 464         g_string_free(str, TRUE);
 465
 466         for (list = g_list_first(ipconfig_list); list;
 467                                                 list = g_list_next(list)) {
 468                 struct connman_ipconfig *ipconfig = list->data;
 469
 470                 if (index != ipconfig->index)
 471                         continue;
 472
 473                 if (ipconfig->ops == NULL)
 474                         continue;
 475
 476                 if (up == TRUE && ipconfig->ops->up)
 477                         ipconfig->ops->up(ipconfig);
 478                 if (lower_up == TRUE && ipconfig->ops->lower_up)
 479                         ipconfig->ops->lower_up(ipconfig);
 480
 481                 if (lower_down == TRUE && ipconfig->ops->lower_down)
 482                         ipconfig->ops->lower_down(ipconfig);
 483                 if (down == TRUE && ipconfig->ops->down)
 484                         ipconfig->ops->down(ipconfig);
 485         }
 486
 487         if (lower_up)
 488                 __connman_ipconfig_lower_up(ipdevice);
 489         if (lower_down)
 490                 __connman_ipconfig_lower_down(ipdevice);
 491 }
 492
 493 void __connman_ipconfig_dellink(int index, struct rtnl_link_stats *stats)
 494 {
 495         struct connman_ipdevice *ipdevice;
 496         GList *list;
 497
 498         DBG("index %d", index);
 499
 500         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 501         if (ipdevice == NULL)
 502                 return;
 503
 504         update_stats(ipdevice, stats);
 505
 506         for (list = g_list_first(ipconfig_list); list;
 507                                                 list = g_list_next(list)) {
 508                 struct connman_ipconfig *ipconfig = list->data;
 509
 510                 if (index != ipconfig->index)
 511                         continue;
 512
 513                 ipconfig->index = -1;
 514
 515                 if (ipconfig->ops == NULL)
 516                         continue;
 517
 518                 if (ipconfig->ops->lower_down)
 519                         ipconfig->ops->lower_down(ipconfig);
 520                 if (ipconfig->ops->down)
 521                         ipconfig->ops->down(ipconfig);
 522         }
 523
 524         __connman_ipconfig_lower_down(ipdevice);
 525
 526         g_hash_table_remove(ipdevice_hash, GINT_TO_POINTER(index));
 527 }
 528
 529 void __connman_ipconfig_newaddr(int index, const char *label,
 530                                 unsigned char prefixlen, const char *address)
 531 {
 532         struct connman_ipdevice *ipdevice;
 533         struct connman_ipaddress *ipaddress;
 534         GList *list;
 535
 536         DBG("index %d", index);
 537
 538         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 539         if (ipdevice == NULL)
 540                 return;
 541
 542         ipaddress = connman_ipaddress_alloc();
 543         if (ipaddress == NULL)
 544                 return;
 545
 546         ipaddress->prefixlen = prefixlen;
 547         ipaddress->local = g_strdup(address);
 548
 549         ipdevice->address_list = g_slist_append(ipdevice->address_list,
 550                                                                 ipaddress);
 551
 552         connman_info("%s {add} address %s/%u label %s", ipdevice->ifname,
 553                                                 address, prefixlen, label);
 554
 555         if (ipdevice->config != NULL)
 556                 connman_ipaddress_copy(ipdevice->config->system, ipaddress);
 557
 558         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
 559                 return;
 560
 561         if (g_slist_length(ipdevice->address_list) > 1)
 562                 return;
 563
 564         for (list = g_list_first(ipconfig_list); list;
 565                                                 list = g_list_next(list)) {
 566                 struct connman_ipconfig *ipconfig = list->data;
 567
 568                 if (index != ipconfig->index)
 569                         continue;
 570
 571                 if (ipconfig->ops == NULL)
 572                         continue;
 573
 574                 if (ipconfig->ops->ip_bound)
 575                         ipconfig->ops->ip_bound(ipconfig);
 576         }
 577 }
 578
 579 void __connman_ipconfig_deladdr(int index, const char *label,
 580                                 unsigned char prefixlen, const char *address)
 581 {
 582         struct connman_ipdevice *ipdevice;
 583         struct connman_ipaddress *ipaddress;
 584         GList *list;
 585
 586         DBG("index %d", index);
 587
 588         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 589         if (ipdevice == NULL)
 590                 return;
 591
 592         ipaddress = find_ipaddress(ipdevice, prefixlen, address);
 593         if (ipaddress == NULL)
 594                 return;
 595
 596         ipdevice->address_list = g_slist_remove(ipdevice->address_list,
 597                                                                 ipaddress);
 598
 599         connman_ipaddress_free(ipaddress);
 600
 601         connman_info("%s {del} address %s/%u label %s", ipdevice->ifname,
 602                                                 address, prefixlen, label);
 603
 604         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
 605                 return;
 606
 607         if (g_slist_length(ipdevice->address_list) > 0)
 608                 return;
 609
 610         for (list = g_list_first(ipconfig_list); list;
 611                                                 list = g_list_next(list)) {
 612                 struct connman_ipconfig *ipconfig = list->data;
 613
 614                 if (index != ipconfig->index)
 615                         continue;
 616
 617                 if (ipconfig->ops == NULL)
 618                         continue;
 619
 620                 if (ipconfig->ops->ip_release)
 621                         ipconfig->ops->ip_release(ipconfig);
 622         }
 623 }
 624
 625 void __connman_ipconfig_newroute(int index, unsigned char scope,
 626                                         const char *dst, const char *gateway)
 627 {
 628         struct connman_ipdevice *ipdevice;
 629
 630         DBG("index %d", index);
 631
 632         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 633         if (ipdevice == NULL)
 634                 return;
 635
 636         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 637                 g_free(ipdevice->gateway);
 638                 ipdevice->gateway = g_strdup(gateway);
 639         }
 640
 641         connman_info("%s {add} route %s gw %s scope %u <%s>",
 642                                         ipdevice->ifname, dst, gateway,
 643                                                 scope, scope2str(scope));
 644 }
 645
 646 void __connman_ipconfig_delroute(int index, unsigned char scope,
 647                                         const char *dst, const char *gateway)
 648 {
 649         struct connman_ipdevice *ipdevice;
 650
 651         DBG("index %d", index);
 652
 653         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 654         if (ipdevice == NULL)
 655                 return;
 656
 657         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 658                 g_free(ipdevice->gateway);
 659                 ipdevice->gateway = NULL;
 660         }
 661
 662         connman_info("%s {del} route %s gw %s scope %u <%s>",
 663                                         ipdevice->ifname, dst, gateway,
 664                                                 scope, scope2str(scope));
 665 }
 666
 667 void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
 668                                                         void *user_data)
 669 {
 670         GList *list, *keys;
 671
 672         keys = g_hash_table_get_keys(ipdevice_hash);
 673         if (keys == NULL)
 674                 return;
 675
 676         for (list = g_list_first(keys); list; list = g_list_next(list)) {
 677                 int index = GPOINTER_TO_INT(list->data);
 678
 679                 function(index, user_data);
 680         }
 681
 682         g_list_free(keys);
 683 }
 684
 685 unsigned short __connman_ipconfig_get_type(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 ARPHRD_VOID;
 692
 693         return ipdevice->type;
 694 }
 695
 696 unsigned int __connman_ipconfig_get_flags(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 0;
 703
 704         return ipdevice->flags;
 705 }
 706
 707 const char *__connman_ipconfig_get_gateway(int index)
 708 {
 709         struct connman_ipdevice *ipdevice;
 710
 711         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 712         if (ipdevice == NULL)
 713                 return NULL;
 714
 715         return ipdevice->gateway;
 716 }
 717
 718 void __connman_ipconfig_set_index(struct connman_ipconfig *ipconfig, int index)
 719 {
 720         ipconfig->index = index;
 721 }
 722
 723 /**
 724  * connman_ipconfig_create:
 725  *
 726  * Allocate a new ipconfig structure.
 727  *
 728  * Returns: a newly-allocated #connman_ipconfig structure
 729  */
 730 struct connman_ipconfig *connman_ipconfig_create(int index)
 731 {
 732         struct connman_ipconfig *ipconfig;
 733
 734         DBG("index %d", index);
 735
 736         ipconfig = g_try_new0(struct connman_ipconfig, 1);
 737         if (ipconfig == NULL)
 738                 return NULL;
 739
 740         ipconfig->refcount = 1;
 741
 742         ipconfig->index = index;
 743
 744         ipconfig->address = connman_ipaddress_alloc();
 745         if (ipconfig->address == NULL) {
 746                 g_free(ipconfig);
 747                 return NULL;
 748         }
 749
 750         ipconfig->system = connman_ipaddress_alloc();
 751
 752         DBG("ipconfig %p", ipconfig);
 753
 754         return ipconfig;
 755 }
 756
 757 /**
 758  * connman_ipconfig_clone:
 759  *
 760  * Clone an ipconfig structure and create new reference.
 761  *
 762  * Returns: a newly-allocated #connman_ipconfig structure
 763  */
 764 struct connman_ipconfig *connman_ipconfig_clone(struct connman_ipconfig *ipconfig)
 765 {
 766         struct connman_ipconfig *ipconfig_clone;
 767
 768         DBG("ipconfig %p", ipconfig);
 769
 770         ipconfig_clone = g_try_new0(struct connman_ipconfig, 1);
 771         if (ipconfig_clone == NULL)
 772                 return NULL;
 773
 774         ipconfig_clone->refcount = 1;
 775
 776         ipconfig_clone->origin = connman_ipconfig_ref(ipconfig);
 777
 778         ipconfig_clone->index = -1;
 779
 780         return ipconfig_clone;
 781 }
 782
 783 /**
 784  * connman_ipconfig_ref:
 785  * @ipconfig: ipconfig structure
 786  *
 787  * Increase reference counter of ipconfig
 788  */
 789 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
 790 {
 791         g_atomic_int_inc(&ipconfig->refcount);
 792
 793         return ipconfig;
 794 }
 795
 796 /**
 797  * connman_ipconfig_unref:
 798  * @ipconfig: ipconfig structure
 799  *
 800  * Decrease reference counter of ipconfig
 801  */
 802 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
 803 {
 804         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
 805                 __connman_ipconfig_disable(ipconfig);
 806
 807                 connman_ipconfig_set_ops(ipconfig, NULL);
 808
 809                 if (ipconfig->origin != NULL) {
 810                         connman_ipconfig_unref(ipconfig->origin);
 811                         ipconfig->origin = NULL;
 812                 }
 813
 814                 connman_ipaddress_free(ipconfig->system);
 815                 connman_ipaddress_free(ipconfig->address);
 816                 g_free(ipconfig);
 817         }
 818 }
 819
 820 /**
 821  * connman_ipconfig_get_data:
 822  * @ipconfig: ipconfig structure
 823  *
 824  * Get private data pointer
 825  */
 826 void *connman_ipconfig_get_data(struct connman_ipconfig *ipconfig)
 827 {
 828         return ipconfig->ops_data;
 829 }
 830
 831 /**
 832  * connman_ipconfig_set_data:
 833  * @ipconfig: ipconfig structure
 834  * @data: data pointer
 835  *
 836  * Set private data pointer
 837  */
 838 void connman_ipconfig_set_data(struct connman_ipconfig *ipconfig, void *data)
 839 {
 840         ipconfig->ops_data = data;
 841 }
 842
 843 /**
 844  * connman_ipconfig_get_index:
 845  * @ipconfig: ipconfig structure
 846  *
 847  * Get interface index
 848  */
 849 int connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 850 {
 851         if (ipconfig == NULL)
 852                 return -1;
 853
 854         if (ipconfig->origin != NULL)
 855                 return ipconfig->origin->index;
 856
 857         return ipconfig->index;
 858 }
 859
 860 /**
 861  * connman_ipconfig_get_ifname:
 862  * @ipconfig: ipconfig structure
 863  *
 864  * Get interface name
 865  */
 866 const char *connman_ipconfig_get_ifname(struct connman_ipconfig *ipconfig)
 867 {
 868         struct connman_ipdevice *ipdevice;
 869
 870         if (ipconfig == NULL)
 871                 return NULL;
 872
 873         if (ipconfig->index < 0)
 874                 return NULL;
 875
 876         ipdevice = g_hash_table_lookup(ipdevice_hash,
 877                                         GINT_TO_POINTER(ipconfig->index));
 878         if (ipdevice == NULL)
 879                 return NULL;
 880
 881         return ipdevice->ifname;
 882 }
 883
 884 /**
 885  * connman_ipconfig_set_ops:
 886  * @ipconfig: ipconfig structure
 887  * @ops: operation callbacks
 888  *
 889  * Set the operation callbacks
 890  */
 891 void connman_ipconfig_set_ops(struct connman_ipconfig *ipconfig,
 892                                 const struct connman_ipconfig_ops *ops)
 893 {
 894         ipconfig->ops = ops;
 895 }
 896
 897 /**
 898  * connman_ipconfig_set_method:
 899  * @ipconfig: ipconfig structure
 900  * @method: configuration method
 901  *
 902  * Set the configuration method
 903  */
 904 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 905                                         enum connman_ipconfig_method method)
 906 {
 907         ipconfig->method = method;
 908
 909         return 0;
 910 }
 911
 912 enum connman_ipconfig_method __connman_ipconfig_get_method(
 913                                 struct connman_ipconfig *ipconfig)
 914 {
 915         if (ipconfig == NULL)
 916                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 917
 918         return ipconfig->method;
 919 }
 920
 921 /**
 922  * connman_ipconfig_bind:
 923  * @ipconfig: ipconfig structure
 924  * @ipaddress: ipaddress structure
 925  *
 926  * Bind IP address details to configuration
 927  */
 928 void connman_ipconfig_bind(struct connman_ipconfig *ipconfig,
 929                                         struct connman_ipaddress *ipaddress)
 930 {
 931         struct connman_ipconfig *origin;
 932
 933         origin = ipconfig->origin ? ipconfig->origin : ipconfig;
 934
 935         connman_ipaddress_copy(origin->address, ipaddress);
 936
 937         connman_inet_set_address(origin->index, origin->address);
 938 }
 939
 940 /* FIXME: The element soulution should be removed in the future */
 941 int __connman_ipconfig_set_gateway(struct connman_ipconfig *ipconfig,
 942                                                 struct connman_element *parent)
 943 {
 944         struct connman_element *connection;
 945
 946         connection = connman_element_create(NULL);
 947
 948         connection->type  = CONNMAN_ELEMENT_TYPE_CONNECTION;
 949         connection->index = ipconfig->index;
 950         connection->ipv4.gateway = ipconfig->address->gateway;
 951
 952         if (connman_element_register(connection, parent) < 0)
 953                 connman_element_unref(connection);
 954
 955         return 0;
 956 }
 957
 958 int __connman_ipconfig_set_address(struct connman_ipconfig *ipconfig)
 959 {
 960         DBG("");
 961
 962         switch (ipconfig->method) {
 963         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 964         case CONNMAN_IPCONFIG_METHOD_OFF:
 965         case CONNMAN_IPCONFIG_METHOD_FIXED:
 966         case CONNMAN_IPCONFIG_METHOD_DHCP:
 967                 break;
 968         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 969                 return connman_inet_set_address(ipconfig->index,
 970                                                 ipconfig->address);
 971         }
 972
 973         return 0;
 974 }
 975
 976 int __connman_ipconfig_clear_address(struct connman_ipconfig *ipconfig)
 977 {
 978         DBG("");
 979
 980         if (ipconfig == NULL)
 981                 return 0;
 982
 983         DBG("method %d", ipconfig->method);
 984
 985         switch (ipconfig->method) {
 986         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 987         case CONNMAN_IPCONFIG_METHOD_OFF:
 988         case CONNMAN_IPCONFIG_METHOD_FIXED:
 989         case CONNMAN_IPCONFIG_METHOD_DHCP:
 990                 break;
 991         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 992                 return connman_inet_clear_address(ipconfig->index);
 993         }
 994
 995         return 0;
 996
 997 }
 998
 999 int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
1000 {
1001         struct connman_ipdevice *ipdevice;
1002
1003         DBG("ipconfig %p", ipconfig);
1004
1005         if (ipconfig == NULL || ipconfig->index < 0)
1006                 return -ENODEV;
1007
1008         ipdevice = g_hash_table_lookup(ipdevice_hash,
1009                                         GINT_TO_POINTER(ipconfig->index));
1010         if (ipdevice == NULL)
1011                 return -ENXIO;
1012
1013         if (ipdevice->config == ipconfig)
1014                 return -EALREADY;
1015
1016         if (ipdevice->config != NULL) {
1017                 ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
1018
1019                 connman_ipaddress_clear(ipdevice->config->system);
1020
1021                 connman_ipconfig_unref(ipdevice->config);
1022         }
1023
1024         ipdevice->config = connman_ipconfig_ref(ipconfig);
1025
1026         ipconfig_list = g_list_append(ipconfig_list, ipconfig);
1027
1028         return 0;
1029 }
1030
1031 int __connman_ipconfig_disable(struct connman_ipconfig *ipconfig)
1032 {
1033         struct connman_ipdevice *ipdevice;
1034
1035         DBG("ipconfig %p", ipconfig);
1036
1037         if (ipconfig == NULL || ipconfig->index < 0)
1038                 return -ENODEV;
1039
1040         ipdevice = g_hash_table_lookup(ipdevice_hash,
1041                                         GINT_TO_POINTER(ipconfig->index));
1042         if (ipdevice == NULL)
1043                 return -ENXIO;
1044
1045         if (ipdevice->config == NULL || ipdevice->config != ipconfig)
1046                 return -EINVAL;
1047
1048         ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
1049
1050         connman_ipaddress_clear(ipdevice->config->system);
1051
1052         connman_ipconfig_unref(ipdevice->config);
1053         ipdevice->config = NULL;
1054
1055         return 0;
1056 }
1057
1058 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
1059 {
1060         switch (method) {
1061         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1062                 break;
1063         case CONNMAN_IPCONFIG_METHOD_OFF:
1064                 return "off";
1065         case CONNMAN_IPCONFIG_METHOD_FIXED:
1066                 return "fixed";
1067         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1068                 return "manual";
1069         case CONNMAN_IPCONFIG_METHOD_DHCP:
1070                 return "dhcp";
1071         }
1072
1073         return NULL;
1074 }
1075
1076 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
1077 {
1078         if (g_strcmp0(method, "off") == 0)
1079                 return CONNMAN_IPCONFIG_METHOD_OFF;
1080         else if (g_strcmp0(method, "fixed") == 0)
1081                 return CONNMAN_IPCONFIG_METHOD_FIXED;
1082         else if (g_strcmp0(method, "manual") == 0)
1083                 return CONNMAN_IPCONFIG_METHOD_MANUAL;
1084         else if (g_strcmp0(method, "dhcp") == 0)
1085                 return CONNMAN_IPCONFIG_METHOD_DHCP;
1086         else
1087                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1088 }
1089
1090 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
1091                                                         DBusMessageIter *iter)
1092 {
1093         const char *str;
1094
1095         str = __connman_ipconfig_method2string(ipconfig->method);
1096         if (str == NULL)
1097                 return;
1098
1099         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1100
1101         if (ipconfig->system == NULL)
1102                 return;
1103
1104         if (ipconfig->system->local != NULL) {
1105                 in_addr_t addr;
1106                 struct in_addr netmask;
1107                 char *mask;
1108
1109                 connman_dbus_dict_append_basic(iter, "Address",
1110                                 DBUS_TYPE_STRING, &ipconfig->system->local);
1111
1112                 addr = 0xffffffff << (32 - ipconfig->system->prefixlen);
1113                 netmask.s_addr = htonl(addr);
1114                 mask = inet_ntoa(netmask);
1115                 connman_dbus_dict_append_basic(iter, "Netmask",
1116                                                 DBUS_TYPE_STRING, &mask);
1117         }
1118
1119         if (ipconfig->system->gateway != NULL)
1120                 connman_dbus_dict_append_basic(iter, "Gateway",
1121                                 DBUS_TYPE_STRING, &ipconfig->address->gateway);
1122 }
1123
1124 void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
1125                                                         DBusMessageIter *iter)
1126 {
1127         const char *str;
1128
1129         str = __connman_ipconfig_method2string(ipconfig->method);
1130         if (str == NULL)
1131                 return;
1132
1133         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1134
1135         switch (ipconfig->method) {
1136         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1137         case CONNMAN_IPCONFIG_METHOD_OFF:
1138         case CONNMAN_IPCONFIG_METHOD_FIXED:
1139         case CONNMAN_IPCONFIG_METHOD_DHCP:
1140                 return;
1141         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1142                 break;
1143         }
1144
1145         if (ipconfig->address == NULL)
1146                 return;
1147
1148         if (ipconfig->address->local != NULL) {
1149                 in_addr_t addr;
1150                 struct in_addr netmask;
1151                 char *mask;
1152
1153                 connman_dbus_dict_append_basic(iter, "Address",
1154                                 DBUS_TYPE_STRING, &ipconfig->address->local);
1155
1156                 addr = 0xffffffff << (32 - ipconfig->address->prefixlen);
1157                 netmask.s_addr = htonl(addr);
1158                 mask = inet_ntoa(netmask);
1159                 connman_dbus_dict_append_basic(iter, "Netmask",
1160                                                 DBUS_TYPE_STRING, &mask);
1161         }
1162
1163         if (ipconfig->address->gateway != NULL)
1164                 connman_dbus_dict_append_basic(iter, "Gateway",
1165                                 DBUS_TYPE_STRING, &ipconfig->address->gateway);
1166 }
1167
1168 int __connman_ipconfig_set_ipv4config(struct connman_ipconfig *ipconfig,
1169                                                         DBusMessageIter *array)
1170 {
1171         enum connman_ipconfig_method method = CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1172         const char *address = NULL, *netmask = NULL, *gateway = NULL;
1173         DBusMessageIter dict;
1174
1175         DBG("ipconfig %p", ipconfig);
1176
1177         if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
1178                 return -EINVAL;
1179
1180         dbus_message_iter_recurse(array, &dict);
1181
1182         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1183                 DBusMessageIter entry;
1184                 const char *key;
1185                 int type;
1186
1187                 dbus_message_iter_recurse(&dict, &entry);
1188
1189                 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
1190                         return -EINVAL;
1191
1192                 dbus_message_iter_get_basic(&entry, &key);
1193                 dbus_message_iter_next(&entry);
1194
1195                 type = dbus_message_iter_get_arg_type(&entry);
1196
1197                 if (g_str_equal(key, "Method") == TRUE) {
1198                         const char *str;
1199
1200                         if (type != DBUS_TYPE_STRING)
1201                                 return -EINVAL;
1202
1203                         dbus_message_iter_get_basic(&entry, &str);
1204                         method = __connman_ipconfig_string2method(str);
1205                 } else if (g_str_equal(key, "Address") == TRUE) {
1206                         if (type != DBUS_TYPE_STRING)
1207                                 return -EINVAL;
1208
1209                         dbus_message_iter_get_basic(&entry, &address);
1210                 } else if (g_str_equal(key, "Netmask") == TRUE) {
1211                         if (type != DBUS_TYPE_STRING)
1212                                 return -EINVAL;
1213
1214                         dbus_message_iter_get_basic(&entry, &netmask);
1215                 } else if (g_str_equal(key, "Gateway") == TRUE) {
1216                         if (type != DBUS_TYPE_STRING)
1217                                 return -EINVAL;
1218
1219                         dbus_message_iter_get_basic(&entry, &gateway);
1220                 }
1221                 dbus_message_iter_next(&dict);
1222         }
1223
1224         DBG("method %d address %s netmask %s gateway %s",
1225                                 method, address, netmask, gateway);
1226
1227         switch (method) {
1228         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1229         case CONNMAN_IPCONFIG_METHOD_OFF:
1230         case CONNMAN_IPCONFIG_METHOD_FIXED:
1231                 return -EINVAL;
1232
1233         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1234                 if (address == NULL)
1235                         return -EINVAL;
1236
1237                 ipconfig->method = method;
1238                 connman_ipaddress_set(ipconfig->address,
1239                                 address, netmask, gateway);
1240                 break;
1241
1242         case CONNMAN_IPCONFIG_METHOD_DHCP:
1243                 if (ipconfig->method == method)
1244                         return 0;
1245
1246                 ipconfig->method = method;
1247                 break;
1248         }
1249
1250         return 0;
1251 }
1252
1253 void __connman_ipconfig_append_proxy(struct connman_ipconfig *ipconfig,
1254                                                         DBusMessageIter *iter)
1255 {
1256         const char *method = "direct";
1257
1258         connman_dbus_dict_append_basic(iter, "Method",
1259                                                 DBUS_TYPE_STRING, &method);
1260 }
1261
1262 void __connman_ipconfig_append_ethernet(struct connman_ipconfig *ipconfig,
1263                                                         DBusMessageIter *iter)
1264 {
1265         struct connman_ipdevice *ipdevice;
1266         const char *method = "auto";
1267
1268         connman_dbus_dict_append_basic(iter, "Method",
1269                                                 DBUS_TYPE_STRING, &method);
1270
1271         ipdevice = g_hash_table_lookup(ipdevice_hash,
1272                                         GINT_TO_POINTER(ipconfig->index));
1273         if (ipdevice == NULL)
1274                 return;
1275
1276         if (ipdevice->ifname != NULL)
1277                 connman_dbus_dict_append_basic(iter, "Interface",
1278                                         DBUS_TYPE_STRING, &ipdevice->ifname);
1279
1280         if (ipdevice->address != NULL)
1281                 connman_dbus_dict_append_basic(iter, "Address",
1282                                         DBUS_TYPE_STRING, &ipdevice->address);
1283
1284         if (ipdevice->mtu > 0)
1285                 connman_dbus_dict_append_basic(iter, "MTU",
1286                                         DBUS_TYPE_UINT16, &ipdevice->mtu);
1287 }
1288
1289 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
1290                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1291 {
1292         const char *method;
1293         char *key;
1294
1295         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1296
1297         key = g_strdup_printf("%smethod", prefix);
1298         method = g_key_file_get_string(keyfile, identifier, key, NULL);
1299         if (method == NULL)
1300                 ipconfig->method = CONNMAN_IPCONFIG_METHOD_DHCP;
1301         else
1302                 ipconfig->method = __connman_ipconfig_string2method(method);
1303         g_free(key);
1304
1305         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1306         ipconfig->address->prefixlen = g_key_file_get_integer(
1307                                 keyfile, identifier, key, NULL);
1308         g_free(key);
1309
1310         key = g_strdup_printf("%slocal_address", prefix);
1311         ipconfig->address->local = g_key_file_get_string(
1312                         keyfile, identifier, key, NULL);
1313         g_free(key);
1314
1315         key = g_strdup_printf("%speer_address", prefix);
1316         ipconfig->address->peer = g_key_file_get_string(
1317                                 keyfile, identifier, key, NULL);
1318         g_free(key);
1319
1320         key = g_strdup_printf("%sbroadcast_address", prefix);
1321         ipconfig->address->broadcast = g_key_file_get_string(
1322                                 keyfile, identifier, key, NULL);
1323         g_free(key);
1324
1325         key = g_strdup_printf("%sgateway", prefix);
1326         ipconfig->address->gateway = g_key_file_get_string(
1327                                 keyfile, identifier, key, NULL);
1328         g_free(key);
1329
1330         return 0;
1331 }
1332
1333 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
1334                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1335 {
1336         const char *method;
1337         char *key;
1338
1339         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1340
1341         method = __connman_ipconfig_method2string(ipconfig->method);
1342
1343         key = g_strdup_printf("%smethod", prefix);
1344         g_key_file_set_string(keyfile, identifier, key, method);
1345         g_free(key);
1346
1347         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1348         g_key_file_set_integer(keyfile, identifier,
1349                         key, ipconfig->address->prefixlen);
1350         g_free(key);
1351
1352         key = g_strdup_printf("%slocal_address", prefix);
1353         if (ipconfig->address->local != NULL)
1354                 g_key_file_set_string(keyfile, identifier,
1355                                 key, ipconfig->address->local);
1356         g_free(key);
1357
1358         key = g_strdup_printf("%speer_address", prefix);
1359         if (ipconfig->address->peer != NULL)
1360                 g_key_file_set_string(keyfile, identifier,
1361                                 key, ipconfig->address->peer);
1362         g_free(key);
1363
1364         key = g_strdup_printf("%sbroadcast_address", prefix);
1365         if (ipconfig->address->broadcast != NULL)
1366                 g_key_file_set_string(keyfile, identifier,
1367                         key, ipconfig->address->broadcast);
1368         g_free(key);
1369
1370         key = g_strdup_printf("%sgateway", prefix);
1371         if (ipconfig->address->gateway != NULL)
1372                 g_key_file_set_string(keyfile, identifier,
1373                         key, ipconfig->address->gateway);
1374         g_free(key);
1375
1376         return 0;
1377 }
1378
1379 int __connman_ipconfig_init(void)
1380 {
1381         DBG("");
1382
1383         ipdevice_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1384                                                         NULL, free_ipdevice);
1385
1386         return 0;
1387 }
1388
1389 void __connman_ipconfig_cleanup(void)
1390 {
1391         DBG("");
1392
1393         g_hash_table_destroy(ipdevice_hash);
1394         ipdevice_hash = NULL;
1395 }