src/ipconfig.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <net/if.h>
  27 #include <net/if_arp.h>
  28 #include <linux/if_link.h>
  29
  30 #ifndef IFF_LOWER_UP
  31 #define IFF_LOWER_UP    0x10000
  32 #endif
  33
  34 #include <gdbus.h>
  35
  36 #include "connman.h"
  37
  38 struct connman_ipconfig {
  39         gint refcount;
  40         int index;
  41
  42         struct connman_ipconfig *origin;
  43
  44         const struct connman_ipconfig_ops *ops;
  45         void *ops_data;
  46
  47         enum connman_ipconfig_method method;
  48         struct connman_ipaddress *address;
  49         struct connman_ipaddress *system;
  50 };
  51
  52 struct connman_ipdevice {
  53         int index;
  54         char *ifname;
  55         unsigned short type;
  56         unsigned int flags;
  57         char *address;
  58         uint16_t mtu;
  59         uint32_t tx_bytes;
  60         uint32_t rx_bytes;
  61
  62         GSList *address_list;
  63         char *gateway;
  64
  65         struct connman_ipconfig *config;
  66
  67         struct connman_ipconfig_driver *driver;
  68         struct connman_ipconfig *driver_config;
  69 };
  70
  71 static GHashTable *ipdevice_hash = NULL;
  72 static GList *ipconfig_list = NULL;
  73
  74 struct connman_ipaddress *connman_ipaddress_alloc(void)
  75 {
  76         struct connman_ipaddress *ipaddress;
  77
  78         ipaddress = g_try_new0(struct connman_ipaddress, 1);
  79         if (ipaddress == NULL)
  80                 return NULL;
  81
  82         return ipaddress;
  83 }
  84
  85 void connman_ipaddress_free(struct connman_ipaddress *ipaddress)
  86 {
  87         if (ipaddress == NULL)
  88                 return;
  89
  90         g_free(ipaddress->broadcast);
  91         g_free(ipaddress->peer);
  92         g_free(ipaddress->local);
  93         g_free(ipaddress);
  94 }
  95
  96 static unsigned char netmask2prefixlen(const char *netmask)
  97 {
  98         unsigned char bits = 0;
  99         in_addr_t mask = inet_network(netmask);
 100         in_addr_t host = ~mask;
 101
 102         /* a valid netmask must be 2^n - 1 */
 103         if ((host & (host + 1)) != 0)
 104                 return -1;
 105
 106         for (; mask; mask <<= 1)
 107                 ++bits;
 108
 109         return bits;
 110 }
 111
 112 void connman_ipaddress_set(struct connman_ipaddress *ipaddress,
 113                                 const char *address, const char *netmask)
 114 {
 115         if (ipaddress == NULL)
 116                 return;
 117
 118         if (netmask != NULL)
 119                 ipaddress->prefixlen = netmask2prefixlen(netmask);
 120         else
 121                 ipaddress->prefixlen = 32;
 122
 123         g_free(ipaddress->local);
 124         ipaddress->local = g_strdup(address);
 125 }
 126
 127 void connman_ipaddress_clear(struct connman_ipaddress *ipaddress)
 128 {
 129         if (ipaddress == NULL)
 130                 return;
 131
 132         ipaddress->prefixlen = 0;
 133
 134         g_free(ipaddress->local);
 135         ipaddress->local = NULL;
 136
 137         g_free(ipaddress->peer);
 138         ipaddress->peer = NULL;
 139
 140         g_free(ipaddress->broadcast);
 141         ipaddress->broadcast = NULL;
 142 }
 143
 144 void connman_ipaddress_copy(struct connman_ipaddress *ipaddress,
 145                                         struct connman_ipaddress *source)
 146 {
 147         if (ipaddress == NULL || source == NULL)
 148                 return;
 149
 150         ipaddress->prefixlen = source->prefixlen;
 151
 152         g_free(ipaddress->local);
 153         ipaddress->local = g_strdup(source->local);
 154
 155         g_free(ipaddress->peer);
 156         ipaddress->peer = g_strdup(source->peer);
 157
 158         g_free(ipaddress->broadcast);
 159         ipaddress->broadcast = g_strdup(source->broadcast);
 160 }
 161
 162 static void free_address_list(struct connman_ipdevice *ipdevice)
 163 {
 164         GSList *list;
 165
 166         for (list = ipdevice->address_list; list; list = list->next) {
 167                 struct connman_ipaddress *ipaddress = list->data;
 168
 169                 connman_ipaddress_free(ipaddress);
 170                 list->data = NULL;
 171         }
 172
 173         g_slist_free(ipdevice->address_list);
 174         ipdevice->address_list = NULL;
 175 }
 176
 177 static struct connman_ipaddress *find_ipaddress(struct connman_ipdevice *ipdevice,
 178                                 unsigned char prefixlen, const char *local)
 179 {
 180         GSList *list;
 181
 182         for (list = ipdevice->address_list; list; list = list->next) {
 183                 struct connman_ipaddress *ipaddress = list->data;
 184
 185                 if (g_strcmp0(ipaddress->local, local) == 0 &&
 186                                         ipaddress->prefixlen == prefixlen)
 187                         return ipaddress;
 188         }
 189
 190         return NULL;
 191 }
 192
 193 static const char *type2str(unsigned short type)
 194 {
 195         switch (type) {
 196         case ARPHRD_ETHER:
 197                 return "ETHER";
 198         case ARPHRD_LOOPBACK:
 199                 return "LOOPBACK";
 200         case ARPHRD_PPP:
 201                 return "PPP";
 202         case ARPHRD_NONE:
 203                 return "NONE";
 204         case ARPHRD_VOID:
 205                 return "VOID";
 206         }
 207
 208         return "";
 209 }
 210
 211 static const char *scope2str(unsigned char scope)
 212 {
 213         switch (scope) {
 214         case 0:
 215                 return "UNIVERSE";
 216         case 253:
 217                 return "LINK";
 218         }
 219
 220         return "";
 221 }
 222
 223 static void free_ipdevice(gpointer data)
 224 {
 225         struct connman_ipdevice *ipdevice = data;
 226
 227         connman_info("%s {remove} index %d", ipdevice->ifname,
 228                                                         ipdevice->index);
 229
 230         if (ipdevice->config != NULL)
 231                 connman_ipconfig_unref(ipdevice->config);
 232
 233         free_address_list(ipdevice);
 234         g_free(ipdevice->gateway);
 235
 236         g_free(ipdevice->address);
 237         g_free(ipdevice->ifname);
 238         g_free(ipdevice);
 239 }
 240
 241 static GSList *driver_list = NULL;
 242
 243 static gint compare_priority(gconstpointer a, gconstpointer b)
 244 {
 245         const struct connman_ipconfig_driver *driver1 = a;
 246         const struct connman_ipconfig_driver *driver2 = b;
 247
 248         return driver2->priority - driver1->priority;
 249 }
 250
 251 /**
 252  * connman_ipconfig_driver_register:
 253  * @driver: IP configuration driver
 254  *
 255  * Register a new IP configuration driver
 256  *
 257  * Returns: %0 on success
 258  */
 259 int connman_ipconfig_driver_register(struct connman_ipconfig_driver *driver)
 260 {
 261         DBG("driver %p name %s", driver, driver->name);
 262
 263         driver_list = g_slist_insert_sorted(driver_list, driver,
 264                                                         compare_priority);
 265
 266         return 0;
 267 }
 268
 269 /**
 270  * connman_ipconfig_driver_unregister:
 271  * @driver: IP configuration driver
 272  *
 273  * Remove a previously registered IP configuration driver.
 274  */
 275 void connman_ipconfig_driver_unregister(struct connman_ipconfig_driver *driver)
 276 {
 277         DBG("driver %p name %s", driver, driver->name);
 278
 279         driver_list = g_slist_remove(driver_list, driver);
 280 }
 281
 282 static void __connman_ipconfig_lower_up(struct connman_ipdevice *ipdevice)
 283 {
 284         GSList *list;
 285
 286         DBG("ipconfig %p", ipdevice->config);
 287
 288         if (ipdevice->config == NULL)
 289                 return;
 290
 291         switch (ipdevice->config->method) {
 292         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 293         case CONNMAN_IPCONFIG_METHOD_OFF:
 294         case CONNMAN_IPCONFIG_METHOD_FIXED:
 295         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 296                 return;
 297         case CONNMAN_IPCONFIG_METHOD_DHCP:
 298                 break;
 299         }
 300
 301         if (ipdevice->driver != NULL)
 302                 return;
 303
 304         ipdevice->driver_config = connman_ipconfig_clone(ipdevice->config);
 305         if (ipdevice->driver_config == NULL)
 306                 return;
 307
 308         for (list = driver_list; list; list = list->next) {
 309                 struct connman_ipconfig_driver *driver = list->data;
 310
 311                 if (driver->request(ipdevice->driver_config) == 0) {
 312                         ipdevice->driver = driver;
 313                         break;
 314                 }
 315         }
 316
 317         if (ipdevice->driver == NULL) {
 318                 connman_ipconfig_unref(ipdevice->driver_config);
 319                 ipdevice->driver_config = NULL;
 320         }
 321 }
 322
 323 static void __connman_ipconfig_lower_down(struct connman_ipdevice *ipdevice)
 324 {
 325         DBG("ipconfig %p", ipdevice->config);
 326
 327         if (ipdevice->config == NULL)
 328                 return;
 329
 330         if (ipdevice->driver == NULL)
 331                 return;
 332
 333         ipdevice->driver->release(ipdevice->driver_config);
 334
 335         ipdevice->driver = NULL;
 336
 337         connman_ipconfig_unref(ipdevice->driver_config);
 338         ipdevice->driver_config = NULL;
 339
 340         connman_inet_clear_address(ipdevice->index);
 341 }
 342
 343 static void update_stats(struct connman_ipdevice *ipdevice,
 344                                                 struct rtnl_link_stats *stats)
 345 {
 346         if (stats->rx_packets == 0 && stats->tx_packets == 0)
 347                 return;
 348
 349         connman_info("%s {RX} %u packets %u bytes", ipdevice->ifname,
 350                                         stats->rx_packets, stats->rx_bytes);
 351         connman_info("%s {TX} %u packets %u bytes", ipdevice->ifname,
 352                                         stats->tx_packets, stats->tx_bytes);
 353
 354         if (ipdevice->config == NULL)
 355                 return;
 356
 357         ipdevice->rx_bytes = stats->rx_bytes;
 358         ipdevice->tx_bytes = stats->tx_bytes;
 359
 360         __connman_counter_notify(ipdevice->ifname,
 361                                 ipdevice->rx_bytes, ipdevice->tx_bytes);
 362 }
 363
 364 void __connman_ipconfig_newlink(int index, unsigned short type,
 365                                 unsigned int flags, const char *address,
 366                                                         unsigned short mtu,
 367                                                 struct rtnl_link_stats *stats)
 368 {
 369         struct connman_ipdevice *ipdevice;
 370         GList *list;
 371         GString *str;
 372         gboolean up = FALSE, down = FALSE;
 373         gboolean lower_up = FALSE, lower_down = FALSE;
 374         char *ifname;
 375
 376         DBG("index %d", index);
 377
 378         if (type == ARPHRD_LOOPBACK)
 379                 return;
 380
 381         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 382         if (ipdevice != NULL)
 383                 goto update;
 384
 385         ifname = connman_inet_ifname(index);
 386
 387         if (__connman_element_device_isfiltered(ifname) == TRUE) {
 388                 connman_info("Ignoring interface %s (filtered)", ifname);
 389                 g_free(ifname);
 390                 return;
 391         }
 392
 393         ipdevice = g_try_new0(struct connman_ipdevice, 1);
 394         if (ipdevice == NULL) {
 395                 g_free(ifname);
 396                 return;
 397         }
 398
 399         ipdevice->index = index;
 400         ipdevice->ifname = ifname;
 401         ipdevice->type = type;
 402
 403         ipdevice->address = g_strdup(address);
 404
 405         g_hash_table_insert(ipdevice_hash, GINT_TO_POINTER(index), ipdevice);
 406
 407         connman_info("%s {create} index %d type %d <%s>", ipdevice->ifname,
 408                                                 index, type, type2str(type));
 409
 410 update:
 411         ipdevice->mtu = mtu;
 412
 413         update_stats(ipdevice, stats);
 414
 415         if (flags == ipdevice->flags)
 416                 return;
 417
 418         if ((ipdevice->flags & IFF_UP) != (flags & IFF_UP)) {
 419                 if (flags & IFF_UP)
 420                         up = TRUE;
 421                 else
 422                         down = TRUE;
 423         }
 424
 425         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) !=
 426                                 (flags & (IFF_RUNNING | IFF_LOWER_UP))) {
 427                 if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) ==
 428                                         (IFF_RUNNING | IFF_LOWER_UP))
 429                         lower_up = TRUE;
 430                 else if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) == 0)
 431                         lower_down = TRUE;
 432         }
 433
 434         ipdevice->flags = flags;
 435
 436         str = g_string_new(NULL);
 437         if (str == NULL)
 438                 return;
 439
 440         if (flags & IFF_UP)
 441                 g_string_append(str, "UP");
 442         else
 443                 g_string_append(str, "DOWN");
 444
 445         if (flags & IFF_RUNNING)
 446                 g_string_append(str, ",RUNNING");
 447
 448         if (flags & IFF_LOWER_UP)
 449                 g_string_append(str, ",LOWER_UP");
 450
 451         connman_info("%s {update} flags %u <%s>", ipdevice->ifname,
 452                                                         flags, str->str);
 453
 454         g_string_free(str, TRUE);
 455
 456         for (list = g_list_first(ipconfig_list); list;
 457                                                 list = g_list_next(list)) {
 458                 struct connman_ipconfig *ipconfig = list->data;
 459
 460                 if (index != ipconfig->index)
 461                         continue;
 462
 463                 if (ipconfig->ops == NULL)
 464                         continue;
 465
 466                 if (up == TRUE && ipconfig->ops->up)
 467                         ipconfig->ops->up(ipconfig);
 468                 if (lower_up == TRUE && ipconfig->ops->lower_up)
 469                         ipconfig->ops->lower_up(ipconfig);
 470
 471                 if (lower_down == TRUE && ipconfig->ops->lower_down)
 472                         ipconfig->ops->lower_down(ipconfig);
 473                 if (down == TRUE && ipconfig->ops->down)
 474                         ipconfig->ops->down(ipconfig);
 475         }
 476
 477         if (lower_up)
 478                 __connman_ipconfig_lower_up(ipdevice);
 479         if (lower_down)
 480                 __connman_ipconfig_lower_down(ipdevice);
 481 }
 482
 483 void __connman_ipconfig_dellink(int index, struct rtnl_link_stats *stats)
 484 {
 485         struct connman_ipdevice *ipdevice;
 486         GList *list;
 487
 488         DBG("index %d", index);
 489
 490         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 491         if (ipdevice == NULL)
 492                 return;
 493
 494         update_stats(ipdevice, stats);
 495
 496         for (list = g_list_first(ipconfig_list); list;
 497                                                 list = g_list_next(list)) {
 498                 struct connman_ipconfig *ipconfig = list->data;
 499
 500                 if (index != ipconfig->index)
 501                         continue;
 502
 503                 ipconfig->index = -1;
 504
 505                 if (ipconfig->ops == NULL)
 506                         continue;
 507
 508                 if (ipconfig->ops->lower_down)
 509                         ipconfig->ops->lower_down(ipconfig);
 510                 if (ipconfig->ops->down)
 511                         ipconfig->ops->down(ipconfig);
 512         }
 513
 514         __connman_ipconfig_lower_down(ipdevice);
 515
 516         g_hash_table_remove(ipdevice_hash, GINT_TO_POINTER(index));
 517 }
 518
 519 void __connman_ipconfig_newaddr(int index, const char *label,
 520                                 unsigned char prefixlen, const char *address)
 521 {
 522         struct connman_ipdevice *ipdevice;
 523         struct connman_ipaddress *ipaddress;
 524         GList *list;
 525
 526         DBG("index %d", index);
 527
 528         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 529         if (ipdevice == NULL)
 530                 return;
 531
 532         ipaddress = connman_ipaddress_alloc();
 533         if (ipaddress == NULL)
 534                 return;
 535
 536         ipaddress->prefixlen = prefixlen;
 537         ipaddress->local = g_strdup(address);
 538
 539         ipdevice->address_list = g_slist_append(ipdevice->address_list,
 540                                                                 ipaddress);
 541
 542         connman_info("%s {add} address %s/%u label %s", ipdevice->ifname,
 543                                                 address, prefixlen, label);
 544
 545         if (ipdevice->config != NULL)
 546                 connman_ipaddress_copy(ipdevice->config->system, ipaddress);
 547
 548         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
 549                 return;
 550
 551         if (g_slist_length(ipdevice->address_list) > 1)
 552                 return;
 553
 554         for (list = g_list_first(ipconfig_list); list;
 555                                                 list = g_list_next(list)) {
 556                 struct connman_ipconfig *ipconfig = list->data;
 557
 558                 if (index != ipconfig->index)
 559                         continue;
 560
 561                 if (ipconfig->ops == NULL)
 562                         continue;
 563
 564                 if (ipconfig->ops->ip_bound)
 565                         ipconfig->ops->ip_bound(ipconfig);
 566         }
 567 }
 568
 569 void __connman_ipconfig_deladdr(int index, const char *label,
 570                                 unsigned char prefixlen, const char *address)
 571 {
 572         struct connman_ipdevice *ipdevice;
 573         struct connman_ipaddress *ipaddress;
 574         GList *list;
 575
 576         DBG("index %d", index);
 577
 578         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 579         if (ipdevice == NULL)
 580                 return;
 581
 582         ipaddress = find_ipaddress(ipdevice, prefixlen, address);
 583         if (ipaddress == NULL)
 584                 return;
 585
 586         ipdevice->address_list = g_slist_remove(ipdevice->address_list,
 587                                                                 ipaddress);
 588
 589         connman_ipaddress_free(ipaddress);
 590
 591         connman_info("%s {del} address %s/%u label %s", ipdevice->ifname,
 592                                                 address, prefixlen, label);
 593
 594         if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
 595                 return;
 596
 597         if (g_slist_length(ipdevice->address_list) > 0)
 598                 return;
 599
 600         for (list = g_list_first(ipconfig_list); list;
 601                                                 list = g_list_next(list)) {
 602                 struct connman_ipconfig *ipconfig = list->data;
 603
 604                 if (index != ipconfig->index)
 605                         continue;
 606
 607                 if (ipconfig->ops == NULL)
 608                         continue;
 609
 610                 if (ipconfig->ops->ip_release)
 611                         ipconfig->ops->ip_release(ipconfig);
 612         }
 613 }
 614
 615 void __connman_ipconfig_newroute(int index, unsigned char scope,
 616                                         const char *dst, const char *gateway)
 617 {
 618         struct connman_ipdevice *ipdevice;
 619
 620         DBG("index %d", index);
 621
 622         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 623         if (ipdevice == NULL)
 624                 return;
 625
 626         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 627                 g_free(ipdevice->gateway);
 628                 ipdevice->gateway = g_strdup(gateway);
 629         }
 630
 631         connman_info("%s {add} route %s gw %s scope %u <%s>",
 632                                         ipdevice->ifname, dst, gateway,
 633                                                 scope, scope2str(scope));
 634 }
 635
 636 void __connman_ipconfig_delroute(int index, unsigned char scope,
 637                                         const char *dst, const char *gateway)
 638 {
 639         struct connman_ipdevice *ipdevice;
 640
 641         DBG("index %d", index);
 642
 643         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 644         if (ipdevice == NULL)
 645                 return;
 646
 647         if (scope == 0 && g_strcmp0(dst, "0.0.0.0") == 0) {
 648                 g_free(ipdevice->gateway);
 649                 ipdevice->gateway = NULL;
 650         }
 651
 652         connman_info("%s {del} route %s gw %s scope %u <%s>",
 653                                         ipdevice->ifname, dst, gateway,
 654                                                 scope, scope2str(scope));
 655 }
 656
 657 void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
 658                                                         void *user_data)
 659 {
 660         GList *list, *keys;
 661
 662         keys = g_hash_table_get_keys(ipdevice_hash);
 663         if (keys == NULL)
 664                 return;
 665
 666         for (list = g_list_first(keys); list; list = g_list_next(list)) {
 667                 int index = GPOINTER_TO_INT(list->data);
 668
 669                 function(index, user_data);
 670         }
 671
 672         g_list_free(keys);
 673 }
 674
 675 unsigned short __connman_ipconfig_get_type(int index)
 676 {
 677         struct connman_ipdevice *ipdevice;
 678
 679         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 680         if (ipdevice == NULL)
 681                 return ARPHRD_VOID;
 682
 683         return ipdevice->type;
 684 }
 685
 686 unsigned int __connman_ipconfig_get_flags(int index)
 687 {
 688         struct connman_ipdevice *ipdevice;
 689
 690         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 691         if (ipdevice == NULL)
 692                 return 0;
 693
 694         return ipdevice->flags;
 695 }
 696
 697 const char *__connman_ipconfig_get_gateway(int index)
 698 {
 699         struct connman_ipdevice *ipdevice;
 700
 701         ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
 702         if (ipdevice == NULL)
 703                 return NULL;
 704
 705         return ipdevice->gateway;
 706 }
 707
 708 /**
 709  * connman_ipconfig_create:
 710  *
 711  * Allocate a new ipconfig structure.
 712  *
 713  * Returns: a newly-allocated #connman_ipconfig structure
 714  */
 715 struct connman_ipconfig *connman_ipconfig_create(int index)
 716 {
 717         struct connman_ipconfig *ipconfig;
 718
 719         DBG("index %d", index);
 720
 721         ipconfig = g_try_new0(struct connman_ipconfig, 1);
 722         if (ipconfig == NULL)
 723                 return NULL;
 724
 725         ipconfig->refcount = 1;
 726
 727         ipconfig->index = index;
 728
 729         ipconfig->address = connman_ipaddress_alloc();
 730         if (ipconfig->address == NULL) {
 731                 g_free(ipconfig);
 732                 return NULL;
 733         }
 734
 735         ipconfig->system = connman_ipaddress_alloc();
 736
 737         DBG("ipconfig %p", ipconfig);
 738
 739         return ipconfig;
 740 }
 741
 742 /**
 743  * connman_ipconfig_clone:
 744  *
 745  * Clone an ipconfig structure and create new reference.
 746  *
 747  * Returns: a newly-allocated #connman_ipconfig structure
 748  */
 749 struct connman_ipconfig *connman_ipconfig_clone(struct connman_ipconfig *ipconfig)
 750 {
 751         struct connman_ipconfig *ipconfig_clone;
 752
 753         DBG("ipconfig %p", ipconfig);
 754
 755         ipconfig_clone = g_try_new0(struct connman_ipconfig, 1);
 756         if (ipconfig_clone == NULL)
 757                 return NULL;
 758
 759         ipconfig_clone->refcount = 1;
 760
 761         ipconfig_clone->origin = connman_ipconfig_ref(ipconfig);
 762
 763         ipconfig_clone->index = -1;
 764
 765         return ipconfig_clone;
 766 }
 767
 768 /**
 769  * connman_ipconfig_ref:
 770  * @ipconfig: ipconfig structure
 771  *
 772  * Increase reference counter of ipconfig
 773  */
 774 struct connman_ipconfig *connman_ipconfig_ref(struct connman_ipconfig *ipconfig)
 775 {
 776         g_atomic_int_inc(&ipconfig->refcount);
 777
 778         return ipconfig;
 779 }
 780
 781 /**
 782  * connman_ipconfig_unref:
 783  * @ipconfig: ipconfig structure
 784  *
 785  * Decrease reference counter of ipconfig
 786  */
 787 void connman_ipconfig_unref(struct connman_ipconfig *ipconfig)
 788 {
 789         if (g_atomic_int_dec_and_test(&ipconfig->refcount) == TRUE) {
 790                 __connman_ipconfig_disable(ipconfig);
 791
 792                 connman_ipconfig_set_ops(ipconfig, NULL);
 793
 794                 if (ipconfig->origin != NULL) {
 795                         connman_ipconfig_unref(ipconfig->origin);
 796                         ipconfig->origin = NULL;
 797                 }
 798
 799                 connman_ipaddress_free(ipconfig->system);
 800                 connman_ipaddress_free(ipconfig->address);
 801                 g_free(ipconfig);
 802         }
 803 }
 804
 805 /**
 806  * connman_ipconfig_get_data:
 807  * @ipconfig: ipconfig structure
 808  *
 809  * Get private data pointer
 810  */
 811 void *connman_ipconfig_get_data(struct connman_ipconfig *ipconfig)
 812 {
 813         return ipconfig->ops_data;
 814 }
 815
 816 /**
 817  * connman_ipconfig_set_data:
 818  * @ipconfig: ipconfig structure
 819  * @data: data pointer
 820  *
 821  * Set private data pointer
 822  */
 823 void connman_ipconfig_set_data(struct connman_ipconfig *ipconfig, void *data)
 824 {
 825         ipconfig->ops_data = data;
 826 }
 827
 828 /**
 829  * connman_ipconfig_get_index:
 830  * @ipconfig: ipconfig structure
 831  *
 832  * Get interface index
 833  */
 834 int connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 835 {
 836         if (ipconfig->origin != NULL)
 837                 return ipconfig->origin->index;
 838
 839         return ipconfig->index;
 840 }
 841
 842 /**
 843  * connman_ipconfig_get_ifname:
 844  * @ipconfig: ipconfig structure
 845  *
 846  * Get interface name
 847  */
 848 const char *connman_ipconfig_get_ifname(struct connman_ipconfig *ipconfig)
 849 {
 850         struct connman_ipdevice *ipdevice;
 851
 852         if (ipconfig->index < 0)
 853                 return NULL;
 854
 855         ipdevice = g_hash_table_lookup(ipdevice_hash,
 856                                         GINT_TO_POINTER(ipconfig->index));
 857         if (ipdevice == NULL)
 858                 return NULL;
 859
 860         return ipdevice->ifname;
 861 }
 862
 863 /**
 864  * connman_ipconfig_set_ops:
 865  * @ipconfig: ipconfig structure
 866  * @ops: operation callbacks
 867  *
 868  * Set the operation callbacks
 869  */
 870 void connman_ipconfig_set_ops(struct connman_ipconfig *ipconfig,
 871                                 const struct connman_ipconfig_ops *ops)
 872 {
 873         ipconfig->ops = ops;
 874 }
 875
 876 /**
 877  * connman_ipconfig_set_method:
 878  * @ipconfig: ipconfig structure
 879  * @method: configuration method
 880  *
 881  * Set the configuration method
 882  */
 883 int connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
 884                                         enum connman_ipconfig_method method)
 885 {
 886         ipconfig->method = method;
 887
 888         return 0;
 889 }
 890
 891 enum connman_ipconfig_method __connman_ipconfig_get_method(
 892                                 struct connman_ipconfig *ipconfig)
 893 {
 894         if (ipconfig == NULL)
 895                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 896
 897         return ipconfig->method;
 898 }
 899
 900 /**
 901  * connman_ipconfig_bind:
 902  * @ipconfig: ipconfig structure
 903  * @ipaddress: ipaddress structure
 904  *
 905  * Bind IP address details to configuration
 906  */
 907 void connman_ipconfig_bind(struct connman_ipconfig *ipconfig,
 908                                         struct connman_ipaddress *ipaddress)
 909 {
 910         struct connman_ipconfig *origin;
 911
 912         origin = ipconfig->origin ? ipconfig->origin : ipconfig;
 913
 914         connman_ipaddress_copy(origin->address, ipaddress);
 915
 916         connman_inet_set_address(origin->index, origin->address);
 917 }
 918
 919 int __connman_ipconfig_set_address(struct connman_ipconfig *ipconfig)
 920 {
 921         DBG("");
 922
 923         switch (ipconfig->method) {
 924         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 925         case CONNMAN_IPCONFIG_METHOD_OFF:
 926         case CONNMAN_IPCONFIG_METHOD_FIXED:
 927         case CONNMAN_IPCONFIG_METHOD_DHCP:
 928                 break;
 929         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 930                 return connman_inet_set_address(ipconfig->index,
 931                                                 ipconfig->address);
 932         }
 933
 934         return 0;
 935 }
 936
 937 int __connman_ipconfig_clear_address(struct connman_ipconfig *ipconfig)
 938 {
 939         DBG("");
 940
 941         switch (ipconfig->method) {
 942         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
 943         case CONNMAN_IPCONFIG_METHOD_OFF:
 944         case CONNMAN_IPCONFIG_METHOD_FIXED:
 945         case CONNMAN_IPCONFIG_METHOD_DHCP:
 946                 break;
 947         case CONNMAN_IPCONFIG_METHOD_MANUAL:
 948                 return connman_inet_clear_address(ipconfig->index);
 949         }
 950
 951         return 0;
 952
 953 }
 954
 955 int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
 956 {
 957         struct connman_ipdevice *ipdevice;
 958
 959         DBG("ipconfig %p", ipconfig);
 960
 961         if (ipconfig == NULL || ipconfig->index < 0)
 962                 return -ENODEV;
 963
 964         ipdevice = g_hash_table_lookup(ipdevice_hash,
 965                                         GINT_TO_POINTER(ipconfig->index));
 966         if (ipdevice == NULL)
 967                 return -ENXIO;
 968
 969         if (ipdevice->config == ipconfig)
 970                 return -EALREADY;
 971
 972         if (ipdevice->config != NULL) {
 973                 ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
 974
 975                 connman_ipaddress_clear(ipdevice->config->system);
 976
 977                 connman_ipconfig_unref(ipdevice->config);
 978         }
 979
 980         ipdevice->config = connman_ipconfig_ref(ipconfig);
 981
 982         ipconfig_list = g_list_append(ipconfig_list, ipconfig);
 983
 984         return 0;
 985 }
 986
 987 int __connman_ipconfig_disable(struct connman_ipconfig *ipconfig)
 988 {
 989         struct connman_ipdevice *ipdevice;
 990
 991         DBG("ipconfig %p", ipconfig);
 992
 993         if (ipconfig == NULL || ipconfig->index < 0)
 994                 return -ENODEV;
 995
 996         ipdevice = g_hash_table_lookup(ipdevice_hash,
 997                                         GINT_TO_POINTER(ipconfig->index));
 998         if (ipdevice == NULL)
 999                 return -ENXIO;
1000
1001         if (ipdevice->config == NULL || ipdevice->config != ipconfig)
1002                 return -EINVAL;
1003
1004         ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
1005
1006         connman_ipaddress_clear(ipdevice->config->system);
1007
1008         connman_ipconfig_unref(ipdevice->config);
1009         ipdevice->config = NULL;
1010
1011         return 0;
1012 }
1013
1014 const char *__connman_ipconfig_method2string(enum connman_ipconfig_method method)
1015 {
1016         switch (method) {
1017         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1018                 break;
1019         case CONNMAN_IPCONFIG_METHOD_OFF:
1020                 return "off";
1021         case CONNMAN_IPCONFIG_METHOD_FIXED:
1022                 return "fixed";
1023         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1024                 return "manual";
1025         case CONNMAN_IPCONFIG_METHOD_DHCP:
1026                 return "dhcp";
1027         }
1028
1029         return NULL;
1030 }
1031
1032 enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method)
1033 {
1034         if (g_strcmp0(method, "off") == 0)
1035                 return CONNMAN_IPCONFIG_METHOD_OFF;
1036         else if (g_strcmp0(method, "fixed") == 0)
1037                 return CONNMAN_IPCONFIG_METHOD_FIXED;
1038         else if (g_strcmp0(method, "manual") == 0)
1039                 return CONNMAN_IPCONFIG_METHOD_MANUAL;
1040         else if (g_strcmp0(method, "dhcp") == 0)
1041                 return CONNMAN_IPCONFIG_METHOD_DHCP;
1042         else
1043                 return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1044 }
1045
1046 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
1047                                                         DBusMessageIter *iter)
1048 {
1049         const char *str;
1050
1051         str = __connman_ipconfig_method2string(ipconfig->method);
1052         if (str == NULL)
1053                 return;
1054
1055         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1056
1057         if (ipconfig->system == NULL)
1058                 return;
1059
1060         if (ipconfig->system->local != NULL) {
1061                 in_addr_t addr;
1062                 struct in_addr netmask;
1063                 char *mask;
1064
1065                 connman_dbus_dict_append_basic(iter, "Address",
1066                                 DBUS_TYPE_STRING, &ipconfig->system->local);
1067
1068                 addr = 0xffffffff << (32 - ipconfig->system->prefixlen);
1069                 netmask.s_addr = htonl(addr);
1070                 mask = inet_ntoa(netmask);
1071                 connman_dbus_dict_append_basic(iter, "Netmask",
1072                                                 DBUS_TYPE_STRING, &mask);
1073         }
1074 }
1075
1076 void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
1077                                                         DBusMessageIter *iter)
1078 {
1079         const char *str;
1080
1081         str = __connman_ipconfig_method2string(ipconfig->method);
1082         if (str == NULL)
1083                 return;
1084
1085         connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
1086
1087         switch (ipconfig->method) {
1088         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1089         case CONNMAN_IPCONFIG_METHOD_OFF:
1090         case CONNMAN_IPCONFIG_METHOD_FIXED:
1091         case CONNMAN_IPCONFIG_METHOD_DHCP:
1092                 return;
1093         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1094                 break;
1095         }
1096
1097         if (ipconfig->address == NULL)
1098                 return;
1099
1100         if (ipconfig->address->local != NULL) {
1101                 in_addr_t addr;
1102                 struct in_addr netmask;
1103                 char *mask;
1104
1105                 connman_dbus_dict_append_basic(iter, "Address",
1106                                 DBUS_TYPE_STRING, &ipconfig->address->local);
1107
1108                 addr = 0xffffffff << (32 - ipconfig->address->prefixlen);
1109                 netmask.s_addr = htonl(addr);
1110                 mask = inet_ntoa(netmask);
1111                 connman_dbus_dict_append_basic(iter, "Netmask",
1112                                                 DBUS_TYPE_STRING, &mask);
1113         }
1114 }
1115
1116 int __connman_ipconfig_set_ipv4config(struct connman_ipconfig *ipconfig,
1117                                                         DBusMessageIter *array)
1118 {
1119         enum connman_ipconfig_method method = CONNMAN_IPCONFIG_METHOD_UNKNOWN;
1120         const char *address = NULL, *netmask = NULL;
1121         DBusMessageIter dict;
1122
1123         DBG("ipconfig %p", ipconfig);
1124
1125         if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
1126                 return -EINVAL;
1127
1128         dbus_message_iter_recurse(array, &dict);
1129
1130         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1131                 DBusMessageIter entry;
1132                 const char *key;
1133                 int type;
1134
1135                 dbus_message_iter_recurse(&dict, &entry);
1136
1137                 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
1138                         return -EINVAL;
1139
1140                 dbus_message_iter_get_basic(&entry, &key);
1141                 dbus_message_iter_next(&entry);
1142
1143                 type = dbus_message_iter_get_arg_type(&entry);
1144
1145                 if (g_str_equal(key, "Method") == TRUE) {
1146                         const char *str;
1147
1148                         if (type != DBUS_TYPE_STRING)
1149                                 return -EINVAL;
1150
1151                         dbus_message_iter_get_basic(&entry, &str);
1152                         method = __connman_ipconfig_string2method(str);
1153                 } else if (g_str_equal(key, "Address") == TRUE) {
1154                         if (type != DBUS_TYPE_STRING)
1155                                 return -EINVAL;
1156
1157                         dbus_message_iter_get_basic(&entry, &address);
1158                 } else if (g_str_equal(key, "Netmask") == TRUE) {
1159                         if (type != DBUS_TYPE_STRING)
1160                                 return -EINVAL;
1161
1162                         dbus_message_iter_get_basic(&entry, &netmask);
1163                 }
1164
1165                 dbus_message_iter_next(&dict);
1166         }
1167
1168         DBG("method %d address %s netmask %s", method, address, netmask);
1169
1170         switch (method) {
1171         case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
1172         case CONNMAN_IPCONFIG_METHOD_OFF:
1173         case CONNMAN_IPCONFIG_METHOD_FIXED:
1174                 return -EINVAL;
1175
1176         case CONNMAN_IPCONFIG_METHOD_MANUAL:
1177                 if (address == NULL)
1178                         return -EINVAL;
1179
1180                 ipconfig->method = method;
1181                 connman_ipaddress_set(ipconfig->address, address, netmask);
1182                 break;
1183
1184         case CONNMAN_IPCONFIG_METHOD_DHCP:
1185                 if (ipconfig->method == method)
1186                         return 0;
1187
1188                 ipconfig->method = method;
1189                 break;
1190         }
1191
1192         return 0;
1193 }
1194
1195 void __connman_ipconfig_append_proxy(struct connman_ipconfig *ipconfig,
1196                                                         DBusMessageIter *iter)
1197 {
1198         const char *method = "direct";
1199
1200         connman_dbus_dict_append_basic(iter, "Method",
1201                                                 DBUS_TYPE_STRING, &method);
1202 }
1203
1204 void __connman_ipconfig_append_ethernet(struct connman_ipconfig *ipconfig,
1205                                                         DBusMessageIter *iter)
1206 {
1207         struct connman_ipdevice *ipdevice;
1208         const char *method = "auto";
1209
1210         connman_dbus_dict_append_basic(iter, "Method",
1211                                                 DBUS_TYPE_STRING, &method);
1212
1213         ipdevice = g_hash_table_lookup(ipdevice_hash,
1214                                         GINT_TO_POINTER(ipconfig->index));
1215         if (ipdevice == NULL)
1216                 return;
1217
1218         if (ipdevice->ifname != NULL)
1219                 connman_dbus_dict_append_basic(iter, "Interface",
1220                                         DBUS_TYPE_STRING, &ipdevice->ifname);
1221
1222         if (ipdevice->address != NULL)
1223                 connman_dbus_dict_append_basic(iter, "Address",
1224                                         DBUS_TYPE_STRING, &ipdevice->address);
1225
1226         if (ipdevice->mtu > 0)
1227                 connman_dbus_dict_append_basic(iter, "MTU",
1228                                         DBUS_TYPE_UINT16, &ipdevice->mtu);
1229 }
1230
1231 int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
1232                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1233 {
1234         const char *method;
1235         char *key;
1236
1237         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1238
1239         key = g_strdup_printf("%smethod", prefix);
1240         method = g_key_file_get_string(keyfile, identifier, key, NULL);
1241         ipconfig->method = __connman_ipconfig_string2method(method);
1242         g_free(key);
1243
1244         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1245         ipconfig->address->prefixlen = g_key_file_get_integer(
1246                                 keyfile, identifier, key, NULL);
1247         g_free(key);
1248
1249         key = g_strdup_printf("%slocal_address", prefix);
1250         ipconfig->address->local = g_key_file_get_string(
1251                         keyfile, identifier, key, NULL);
1252         g_free(key);
1253
1254         key = g_strdup_printf("%speer_address", prefix);
1255         ipconfig->address->peer = g_key_file_get_string(
1256                                 keyfile, identifier, key, NULL);
1257         g_free(key);
1258
1259         key = g_strdup_printf("%sbroadcast_address", prefix);
1260         ipconfig->address->broadcast = g_key_file_get_string(
1261                                 keyfile, identifier, key, NULL);
1262         g_free(key);
1263
1264         return 0;
1265 }
1266
1267 int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
1268                 GKeyFile *keyfile, const char *identifier, const char *prefix)
1269 {
1270         const char *method;
1271         char *key;
1272
1273         DBG("ipconfig %p identifier %s", ipconfig, identifier);
1274
1275         method = __connman_ipconfig_method2string(ipconfig->method);
1276
1277         key = g_strdup_printf("%smethod", prefix);
1278         g_key_file_set_string(keyfile, identifier, key, method);
1279         g_free(key);
1280
1281         key = g_strdup_printf("%snetmask_prefixlen", prefix);
1282         g_key_file_set_integer(keyfile, identifier,
1283                         key, ipconfig->address->prefixlen);
1284         g_free(key);
1285
1286         key = g_strdup_printf("%slocal_address", prefix);
1287         if (ipconfig->address->local != NULL)
1288                 g_key_file_set_string(keyfile, identifier,
1289                                 key, ipconfig->address->local);
1290         g_free(key);
1291
1292         key = g_strdup_printf("%speer_address", prefix);
1293         if (ipconfig->address->peer != NULL)
1294                 g_key_file_set_string(keyfile, identifier,
1295                                 key, ipconfig->address->peer);
1296         g_free(key);
1297
1298         key = g_strdup_printf("%sbroadcast_address", prefix);
1299         if (ipconfig->address->broadcast != NULL)
1300                 g_key_file_set_string(keyfile, identifier,
1301                         "broadcast_address", ipconfig->address->broadcast);
1302         g_free(key);
1303
1304         return 0;
1305 }
1306
1307 int __connman_ipconfig_init(void)
1308 {
1309         DBG("");
1310
1311         ipdevice_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
1312                                                         NULL, free_ipdevice);
1313
1314         return 0;
1315 }
1316
1317 void __connman_ipconfig_cleanup(void)
1318 {
1319         DBG("");
1320
1321         g_hash_table_destroy(ipdevice_hash);
1322         ipdevice_hash = NULL;
1323 }