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 /**
 719  * connman_ipconfig_create:
 720  *
 721  * Allocate a new ipconfig structure.
 722  *
 723  * Returns: a newly-allocated #connman_ipconfig structure
 724  */
 725 struct connman_ipconfig *connman_ipconfig_create(int index)
 726 {
 727         struct connman_ipconfig *ipconfig;
 728
 729         DBG("index %d", index);
 730
 731         ipconfig = g_try_new0(struct connman_ipconfig, 1);
 732         if (ipconfig == NULL)
 733                 return NULL;
 734
 735         ipconfig->refcount = 1;
 736
 737         ipconfig->index = index;
 738
 739         ipconfig->address = connman_ipaddress_alloc();
 740         if (ipconfig->address == NULL) {
 741                 g_free(ipconfig);
 742                 return NULL;
 743         }
 744
 745         ipconfig->system = connman_ipaddress_alloc();
 746
 747         DBG("ipconfig %p", ipconfig);
 748
 749         return ipconfig;
 750 }
 751
 752 /**
 753  * connman_ipconfig_clone:
 754  *
 755  * Clone an ipconfig structure and create new reference.
 756  *
 757  * Returns: a newly-allocated #connman_ipconfig structure
 758  */
 759 struct connman_ipconfig *connman_ipconfig_clone(struct connman_ipconfig *ipconfig)
 760 {
 761         struct connman_ipconfig *ipconfig_clone;
 762
 763         DBG("ipconfig %p", ipconfig);
 764
 765         ipconfig_clone = g_try_new0(struct connman_ipconfig, 1);
 766         if (ipconfig_clone == NULL)
 767                 return NULL;
 768
 769         ipconfig_clone->refcount = 1;
 770
 771         ipconfig_clone->origin = connman_ipconfig_ref(ipconfig);
 772
 773         ipconfig_clone->index = -1;
 774
 775         return ipconfig_clone;
 776 }
 777
 778 /**
 779  * connman_ipconfig_ref:
 780  * @ipconfig: ipconfig structure
 781  *
 782  * Increase reference counter of ipconfig
 783  */
 784 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
 785 {
 786         g_atomic_int_inc(&ipconfig->refcount);
 787
 788         return ipconfig;
 789 }
 790
 791 /**
 792  * connman_ipconfig_unref:
 793  * @ipconfig: ipconfig structure
 794  *
 795  * Decrease reference counter of ipconfig
 796  */
 797 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
 798 {
 799         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
 800                 __connman_ipconfig_disable(ipconfig);
 801
 802                 connman_ipconfig_set_ops(ipconfig, NULL);
 803
 804                 if (ipconfig->origin != NULL) {
 805                         connman_ipconfig_unref(ipconfig->origin);
 806                         ipconfig->origin = NULL;
 807                 }
 808
 809                 connman_ipaddress_free(ipconfig->system);
 810                 connman_ipaddress_free(ipconfig->address);
 811                 g_free(ipconfig);
 812         }
 813 }
 814
 815 /**
 816  * connman_ipconfig_get_data:
 817  * @ipconfig: ipconfig structure
 818  *
 819  * Get private data pointer
 820  */
 821 void *connman_ipconfig_get_data(struct connman_ipconfig *ipconfig)
 822 {
 823         return ipconfig->ops_data;
 824 }
 825
 826 /**
 827  * connman_ipconfig_set_data:
 828  * @ipconfig: ipconfig structure
 829  * @data: data pointer
 830  *
 831  * Set private data pointer
 832  */
 833 void connman_ipconfig_set_data(struct connman_ipconfig *ipconfig, void *data)
 834 {
 835         ipconfig->ops_data = data;
 836 }
 837
 838 /**
 839  * connman_ipconfig_get_index:
 840  * @ipconfig: ipconfig structure
 841  *
 842  * Get interface index
 843  */
 844 int connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 845 {
 846         if (ipconfig->origin != NULL)
 847                 return ipconfig->origin->index;
 848
 849         return ipconfig->index;
 850 }
 851
 852 /**
 853  * connman_ipconfig_get_ifname:
 854  * @ipconfig: ipconfig structure
 855  *
 856  * Get interface name
 857  */
 858 const char *connman_ipconfig_get_ifname(struct connman_ipconfig *ipconfig)
 859 {
 860         struct connman_ipdevice *ipdevice;
 861
 862         if (ipconfig->index < 0)
 863                 return NULL;
 864
 865         ipdevice = g_hash_table_lookup(ipdevice_hash,
 866                                         GINT_TO_POINTER(ipconfig->index));
 867         if (ipdevice == NULL)
 868                 return NULL;
 869
 870         return ipdevice->ifname;
 871 }
 872
 873 /**
 874  * connman_ipconfig_set_ops:
 875  * @ipconfig: ipconfig structure
 876  * @ops: operation callbacks
 877  *
 878  * Set the operation callbacks
 879  */
 880 void connman_ipconfig_set_ops(struct connman_ipconfig *ipconfig,
 881                                 const struct connman_ipconfig_ops *ops)
 882 {
 883         ipconfig->ops = ops;
 884 }
 885
 886 /**
 887  * connman_ipconfig_set_method:
 888  * @ipconfig: ipconfig structure
 889  * @method: configuration method
 890  *
 891  * Set the configuration method
 892  */
 893 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 894                                         enum connman_ipconfig_method method)
 895 {
 896         ipconfig->method = method;
 897
 898         return 0;
 899 }
 900
 901 enum connman_ipconfig_method __connman_ipconfig_get_method(
 902                                 struct connman_ipconfig *ipconfig)
 903 {
 904         if (ipconfig == NULL)
 905                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 906
 907         return ipconfig->method;
 908 }
 909
 910 /**
 911  * connman_ipconfig_bind:
 912  * @ipconfig: ipconfig structure
 913  * @ipaddress: ipaddress structure
 914  *
 915  * Bind IP address details to configuration
 916  */
 917 void connman_ipconfig_bind(struct connman_ipconfig *ipconfig,
 918                                         struct connman_ipaddress *ipaddress)
 919 {
 920         struct connman_ipconfig *origin;
 921
 922         origin = ipconfig->origin ? ipconfig->origin : ipconfig;
 923
 924         connman_ipaddress_copy(origin->address, ipaddress);
 925
 926         connman_inet_set_address(origin->index, origin->address);
 927 }
 928
 929 int __connman_ipconfig_set_address(struct connman_ipconfig *ipconfig)
 930 {
 931         DBG("");
 932
 933         switch (ipconfig->method) {
 934         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 935         case CONNMAN_IPCONFIG_METHOD_OFF:
 936         case CONNMAN_IPCONFIG_METHOD_FIXED:
 937         case CONNMAN_IPCONFIG_METHOD_DHCP:
 938                 break;
 939         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 940                 return connman_inet_set_address(ipconfig->index,
 941                                                 ipconfig->address);
 942         }
 943
 944         return 0;
 945 }
 946
 947 int __connman_ipconfig_clear_address(struct connman_ipconfig *ipconfig)
 948 {
 949         DBG("");
 950
 951         if (ipconfig == NULL)
 952                 return 0;
 953
 954         DBG("method %d", ipconfig->method);
 955
 956         switch (ipconfig->method) {
 957         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 958         case CONNMAN_IPCONFIG_METHOD_OFF:
 959         case CONNMAN_IPCONFIG_METHOD_FIXED:
 960         case CONNMAN_IPCONFIG_METHOD_DHCP:
 961                 break;
 962         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 963                 return connman_inet_clear_address(ipconfig->index);
 964         }
 965
 966         return 0;
 967
 968 }
 969
 970 int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
 971 {
 972         struct connman_ipdevice *ipdevice;
 973
 974         DBG("ipconfig %p", ipconfig);
 975
 976         if (ipconfig == NULL || ipconfig->index < 0)
 977                 return -ENODEV;
 978
 979         ipdevice = g_hash_table_lookup(ipdevice_hash,
 980                                         GINT_TO_POINTER(ipconfig->index));
 981         if (ipdevice == NULL)
 982                 return -ENXIO;
 983
 984         if (ipdevice->config == ipconfig)
 985                 return -EALREADY;
 986
 987         if (ipdevice->config != NULL) {
 988                 ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
 989
 990                 connman_ipaddress_clear(ipdevice->config->system);
 991
 992                 connman_ipconfig_unref(ipdevice->config);
 993         }
 994
 995         ipdevice->config = connman_ipconfig_ref(ipconfig);
 996
 997         ipconfig_list = g_list_append(ipconfig_list, ipconfig);
 998
 999         return 0;
1000 }
1001
1002 int __connman_ipconfig_disable(struct connman_ipconfig *ipconfig)
1003 {
1004         struct connman_ipdevice *ipdevice;
1005
1006         DBG("ipconfig %p", ipconfig);
1007
1008         if (ipconfig == NULL || ipconfig->index < 0)
1009                 return -ENODEV;
1010
1011         ipdevice = g_hash_table_lookup(ipdevice_hash,
1012                                         GINT_TO_POINTER(ipconfig->index));
1013         if (ipdevice == NULL)
1014                 return -ENXIO;
1015
1016         if (ipdevice->config == NULL || ipdevice->config != ipconfig)
1017                 return -EINVAL;
1018
1019         ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
1020
1021         connman_ipaddress_clear(ipdevice->config->system);
1022
1023         connman_ipconfig_unref(ipdevice->config);
1024         ipdevice->config = NULL;
1025
1026         return 0;
1027 }
1028
1029 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
1030 {
1031         switch (method) {
1032         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1033                 break;
1034         case CONNMAN_IPCONFIG_METHOD_OFF:
1035                 return "off";
1036         case CONNMAN_IPCONFIG_METHOD_FIXED:
1037                 return "fixed";
1038         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1039                 return "manual";
1040         case CONNMAN_IPCONFIG_METHOD_DHCP:
1041                 return "dhcp";
1042         }
1043
1044         return NULL;
1045 }
1046
1047 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
1048 {
1049         if (g_strcmp0(method, "off") == 0)
1050                 return CONNMAN_IPCONFIG_METHOD_OFF;
1051         else if (g_strcmp0(method, "fixed") == 0)
1052                 return CONNMAN_IPCONFIG_METHOD_FIXED;
1053         else if (g_strcmp0(method, "manual") == 0)
1054                 return CONNMAN_IPCONFIG_METHOD_MANUAL;
1055         else if (g_strcmp0(method, "dhcp") == 0)
1056                 return CONNMAN_IPCONFIG_METHOD_DHCP;
1057         else
1058                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1059 }
1060
1061 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
1062                                                         DBusMessageIter *iter)
1063 {
1064         const char *str;
1065
1066         str = __connman_ipconfig_method2string(ipconfig->method);
1067         if (str == NULL)
1068                 return;
1069
1070         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1071
1072         if (ipconfig->system == NULL)
1073                 return;
1074
1075         if (ipconfig->system->local != NULL) {
1076                 in_addr_t addr;
1077                 struct in_addr netmask;
1078                 char *mask;
1079
1080                 connman_dbus_dict_append_basic(iter, "Address",
1081                                 DBUS_TYPE_STRING, &ipconfig->system->local);
1082
1083                 addr = 0xffffffff << (32 - ipconfig->system->prefixlen);
1084                 netmask.s_addr = htonl(addr);
1085                 mask = inet_ntoa(netmask);
1086                 connman_dbus_dict_append_basic(iter, "Netmask",
1087                                                 DBUS_TYPE_STRING, &mask);
1088         }
1089 }
1090
1091 void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
1092                                                         DBusMessageIter *iter)
1093 {
1094         const char *str;
1095
1096         str = __connman_ipconfig_method2string(ipconfig->method);
1097         if (str == NULL)
1098                 return;
1099
1100         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1101
1102         switch (ipconfig->method) {
1103         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1104         case CONNMAN_IPCONFIG_METHOD_OFF:
1105         case CONNMAN_IPCONFIG_METHOD_FIXED:
1106         case CONNMAN_IPCONFIG_METHOD_DHCP:
1107                 return;
1108         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1109                 break;
1110         }
1111
1112         if (ipconfig->address == NULL)
1113                 return;
1114
1115         if (ipconfig->address->local != NULL) {
1116                 in_addr_t addr;
1117                 struct in_addr netmask;
1118                 char *mask;
1119
1120                 connman_dbus_dict_append_basic(iter, "Address",
1121                                 DBUS_TYPE_STRING, &ipconfig->address->local);
1122
1123                 addr = 0xffffffff << (32 - ipconfig->address->prefixlen);
1124                 netmask.s_addr = htonl(addr);
1125                 mask = inet_ntoa(netmask);
1126                 connman_dbus_dict_append_basic(iter, "Netmask",
1127                                                 DBUS_TYPE_STRING, &mask);
1128         }
1129 }
1130
1131 int __connman_ipconfig_set_ipv4config(struct connman_ipconfig *ipconfig,
1132                                                         DBusMessageIter *array)
1133 {
1134         enum connman_ipconfig_method method = CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1135         const char *address = NULL, *netmask = NULL, *gateway = NULL;
1136         DBusMessageIter dict;
1137
1138         DBG("ipconfig %p", ipconfig);
1139
1140         if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
1141                 return -EINVAL;
1142
1143         dbus_message_iter_recurse(array, &dict);
1144
1145         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1146                 DBusMessageIter entry;
1147                 const char *key;
1148                 int type;
1149
1150                 dbus_message_iter_recurse(&dict, &entry);
1151
1152                 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
1153                         return -EINVAL;
1154
1155                 dbus_message_iter_get_basic(&entry, &key);
1156                 dbus_message_iter_next(&entry);
1157
1158                 type = dbus_message_iter_get_arg_type(&entry);
1159
1160                 if (g_str_equal(key, "Method") == TRUE) {
1161                         const char *str;
1162
1163                         if (type != DBUS_TYPE_STRING)
1164                                 return -EINVAL;
1165
1166                         dbus_message_iter_get_basic(&entry, &str);
1167                         method = __connman_ipconfig_string2method(str);
1168                 } else if (g_str_equal(key, "Address") == TRUE) {
1169                         if (type != DBUS_TYPE_STRING)
1170                                 return -EINVAL;
1171
1172                         dbus_message_iter_get_basic(&entry, &address);
1173                 } else if (g_str_equal(key, "Netmask") == TRUE) {
1174                         if (type != DBUS_TYPE_STRING)
1175                                 return -EINVAL;
1176
1177                         dbus_message_iter_get_basic(&entry, &netmask);
1178                 } else if (g_str_equal(key, "Gateway") == TRUE) {
1179                         if (type != DBUS_TYPE_STRING)
1180                                 return -EINVAL;
1181
1182                         dbus_message_iter_get_basic(&entry, &gateway);
1183                 }
1184                 dbus_message_iter_next(&dict);
1185         }
1186
1187         DBG("method %d address %s netmask %s gateway %s",
1188                                 method, address, netmask, gateway);
1189
1190         switch (method) {
1191         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1192         case CONNMAN_IPCONFIG_METHOD_OFF:
1193         case CONNMAN_IPCONFIG_METHOD_FIXED:
1194                 return -EINVAL;
1195
1196         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1197                 if (address == NULL)
1198                         return -EINVAL;
1199
1200                 ipconfig->method = method;
1201                 connman_ipaddress_set(ipconfig->address,
1202                                 address, netmask, gateway);
1203                 break;
1204
1205         case CONNMAN_IPCONFIG_METHOD_DHCP:
1206                 if (ipconfig->method == method)
1207                         return 0;
1208
1209                 ipconfig->method = method;
1210                 break;
1211         }
1212
1213         return 0;
1214 }
1215
1216 void __connman_ipconfig_append_proxy(struct connman_ipconfig *ipconfig,
1217                                                         DBusMessageIter *iter)
1218 {
1219         const char *method = "direct";
1220
1221         connman_dbus_dict_append_basic(iter, "Method",
1222                                                 DBUS_TYPE_STRING, &method);
1223 }
1224
1225 void __connman_ipconfig_append_ethernet(struct connman_ipconfig *ipconfig,
1226                                                         DBusMessageIter *iter)
1227 {
1228         struct connman_ipdevice *ipdevice;
1229         const char *method = "auto";
1230
1231         connman_dbus_dict_append_basic(iter, "Method",
1232                                                 DBUS_TYPE_STRING, &method);
1233
1234         ipdevice = g_hash_table_lookup(ipdevice_hash,
1235                                         GINT_TO_POINTER(ipconfig->index));
1236         if (ipdevice == NULL)
1237                 return;
1238
1239         if (ipdevice->ifname != NULL)
1240                 connman_dbus_dict_append_basic(iter, "Interface",
1241                                         DBUS_TYPE_STRING, &ipdevice->ifname);
1242
1243         if (ipdevice->address != NULL)
1244                 connman_dbus_dict_append_basic(iter, "Address",
1245                                         DBUS_TYPE_STRING, &ipdevice->address);
1246
1247         if (ipdevice->mtu > 0)
1248                 connman_dbus_dict_append_basic(iter, "MTU",
1249                                         DBUS_TYPE_UINT16, &ipdevice->mtu);
1250 }
1251
1252 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
1253                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1254 {
1255         const char *method;
1256         char *key;
1257
1258         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1259
1260         key = g_strdup_printf("%smethod", prefix);
1261         method = g_key_file_get_string(keyfile, identifier, key, NULL);
1262         if (method == NULL)
1263                 ipconfig->method = CONNMAN_IPCONFIG_METHOD_DHCP;
1264         else
1265                 ipconfig->method = __connman_ipconfig_string2method(method);
1266         g_free(key);
1267
1268         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1269         ipconfig->address->prefixlen = g_key_file_get_integer(
1270                                 keyfile, identifier, key, NULL);
1271         g_free(key);
1272
1273         key = g_strdup_printf("%slocal_address", prefix);
1274         ipconfig->address->local = g_key_file_get_string(
1275                         keyfile, identifier, key, NULL);
1276         g_free(key);
1277
1278         key = g_strdup_printf("%speer_address", prefix);
1279         ipconfig->address->peer = g_key_file_get_string(
1280                                 keyfile, identifier, key, NULL);
1281         g_free(key);
1282
1283         key = g_strdup_printf("%sbroadcast_address", prefix);
1284         ipconfig->address->broadcast = g_key_file_get_string(
1285                                 keyfile, identifier, key, NULL);
1286         g_free(key);
1287
1288         key = g_strdup_printf("%sgateway", prefix);
1289         ipconfig->address->gateway = g_key_file_get_string(
1290                                 keyfile, identifier, key, NULL);
1291         g_free(key);
1292
1293         return 0;
1294 }
1295
1296 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
1297                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1298 {
1299         const char *method;
1300         char *key;
1301
1302         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1303
1304         method = __connman_ipconfig_method2string(ipconfig->method);
1305
1306         key = g_strdup_printf("%smethod", prefix);
1307         g_key_file_set_string(keyfile, identifier, key, method);
1308         g_free(key);
1309
1310         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1311         g_key_file_set_integer(keyfile, identifier,
1312                         key, ipconfig->address->prefixlen);
1313         g_free(key);
1314
1315         key = g_strdup_printf("%slocal_address", prefix);
1316         if (ipconfig->address->local != NULL)
1317                 g_key_file_set_string(keyfile, identifier,
1318                                 key, ipconfig->address->local);
1319         g_free(key);
1320
1321         key = g_strdup_printf("%speer_address", prefix);
1322         if (ipconfig->address->peer != NULL)
1323                 g_key_file_set_string(keyfile, identifier,
1324                                 key, ipconfig->address->peer);
1325         g_free(key);
1326
1327         key = g_strdup_printf("%sbroadcast_address", prefix);
1328         if (ipconfig->address->broadcast != NULL)
1329                 g_key_file_set_string(keyfile, identifier,
1330                         key, ipconfig->address->broadcast);
1331         g_free(key);
1332
1333         key = g_strdup_printf("%sgateway", prefix);
1334         if (ipconfig->address->gateway != NULL)
1335                 g_key_file_set_string(keyfile, identifier,
1336                         key, ipconfig->address->gateway);
1337         g_free(key);
1338
1339         return 0;
1340 }
1341
1342 int __connman_ipconfig_init(void)
1343 {
1344         DBG("");
1345
1346         ipdevice_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1347                                                         NULL, free_ipdevice);
1348
1349         return 0;
1350 }
1351
1352 void __connman_ipconfig_cleanup(void)
1353 {
1354         DBG("");
1355
1356         g_hash_table_destroy(ipdevice_hash);
1357         ipdevice_hash = NULL;
1358 }