src/inet.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2013  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2003-2005  Go-Core Project
   7  *  Copyright (C) 2003-2006  Helsinki University of Technology
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License version 2 as
  11  *  published by the Free Software Foundation.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #define _GNU_SOURCE
  29 #include <stdio.h>
  30 #include <errno.h>
  31 #include <unistd.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <sys/stat.h>
  35 #include <sys/ioctl.h>
  36 #include <sys/socket.h>
  37 #include <linux/sockios.h>
  38 #include <netdb.h>
  39 #include <arpa/inet.h>
  40 #include <net/route.h>
  41 #include <net/ethernet.h>
  42 #include <net/if.h>
  43 #include <net/if_arp.h>
  44 #include <netinet/icmp6.h>
  45 #include <fcntl.h>
  46 #include <linux/if_tun.h>
  47 #include <ctype.h>
  48 #include <ifaddrs.h>
  49 #include <linux/fib_rules.h>
  50
  51 #include "connman.h"
  52 #include <gdhcp/gdhcp.h>
  53
  54 #define NLMSG_TAIL(nmsg)                                \
  55         ((struct rtattr *) (((uint8_t*) (nmsg)) +       \
  56         NLMSG_ALIGN((nmsg)->nlmsg_len)))
  57
  58 int __connman_inet_rtnl_addattr_l(struct nlmsghdr *n, size_t max_length,
  59                                 int type, const void *data, size_t data_length)
  60 {
  61         size_t length;
  62         struct rtattr *rta;
  63
  64         length = RTA_LENGTH(data_length);
  65
  66         if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length) > max_length)
  67                 return -E2BIG;
  68
  69         rta = NLMSG_TAIL(n);
  70         rta->rta_type = type;
  71         rta->rta_len = length;
  72         memcpy(RTA_DATA(rta), data, data_length);
  73         n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length);
  74
  75         return 0;
  76 }
  77
  78 int __connman_inet_modify_address(int cmd, int flags,
  79                                 int index, int family,
  80                                 const char *address,
  81                                 const char *peer,
  82                                 unsigned char prefixlen,
  83                                 const char *broadcast)
  84 {
  85         uint8_t request[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
  86                         NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
  87                         RTA_LENGTH(sizeof(struct in6_addr)) +
  88                         RTA_LENGTH(sizeof(struct in6_addr))];
  89
  90         struct nlmsghdr *header;
  91         struct sockaddr_nl nl_addr;
  92         struct ifaddrmsg *ifaddrmsg;
  93         struct in6_addr ipv6_addr;
  94         struct in_addr ipv4_addr, ipv4_dest, ipv4_bcast;
  95         int sk, err;
  96
  97         DBG("cmd %#x flags %#x index %d family %d address %s peer %s "
  98                 "prefixlen %hhu broadcast %s", cmd, flags, index, family,
  99                 address, peer, prefixlen, broadcast);
 100
 101         if (!address)
 102                 return -EINVAL;
 103
 104         if (family != AF_INET && family != AF_INET6)
 105                 return -EINVAL;
 106
 107         memset(&request, 0, sizeof(request));
 108
 109         header = (struct nlmsghdr *)request;
 110         header->nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
 111         header->nlmsg_type = cmd;
 112         header->nlmsg_flags = NLM_F_REQUEST | flags;
 113         header->nlmsg_seq = 1;
 114
 115         ifaddrmsg = NLMSG_DATA(header);
 116         ifaddrmsg->ifa_family = family;
 117         ifaddrmsg->ifa_prefixlen = prefixlen;
 118         ifaddrmsg->ifa_flags = IFA_F_PERMANENT;
 119         ifaddrmsg->ifa_scope = RT_SCOPE_UNIVERSE;
 120         ifaddrmsg->ifa_index = index;
 121
 122         if (family == AF_INET) {
 123                 if (inet_pton(AF_INET, address, &ipv4_addr) < 1)
 124                         return -1;
 125
 126                 if (broadcast)
 127                         inet_pton(AF_INET, broadcast, &ipv4_bcast);
 128                 else
 129                         ipv4_bcast.s_addr = ipv4_addr.s_addr |
 130                                 htonl(0xfffffffflu >> prefixlen);
 131
 132                 if (peer) {
 133                         if (inet_pton(AF_INET, peer, &ipv4_dest) < 1)
 134                                 return -1;
 135
 136                         err = __connman_inet_rtnl_addattr_l(header,
 137                                                         sizeof(request),
 138                                                         IFA_ADDRESS,
 139                                                         &ipv4_dest,
 140                                                         sizeof(ipv4_dest));
 141                         if (err < 0)
 142                                 return err;
 143                 }
 144
 145                 err = __connman_inet_rtnl_addattr_l(header,
 146                                                 sizeof(request),
 147                                                 IFA_LOCAL,
 148                                                 &ipv4_addr,
 149                                                 sizeof(ipv4_addr));
 150                 if (err < 0)
 151                         return err;
 152
 153                 err = __connman_inet_rtnl_addattr_l(header,
 154                                                 sizeof(request),
 155                                                 IFA_BROADCAST,
 156                                                 &ipv4_bcast,
 157                                                 sizeof(ipv4_bcast));
 158                 if (err < 0)
 159                         return err;
 160
 161         } else if (family == AF_INET6) {
 162                 if (inet_pton(AF_INET6, address, &ipv6_addr) < 1)
 163                         return -1;
 164
 165                 err = __connman_inet_rtnl_addattr_l(header,
 166                                                 sizeof(request),
 167                                                 IFA_LOCAL,
 168                                                 &ipv6_addr,
 169                                                 sizeof(ipv6_addr));
 170                 if (err < 0)
 171                         return err;
 172         }
 173
 174         sk = socket(AF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE);
 175         if (sk < 0)
 176                 return -errno;
 177
 178         memset(&nl_addr, 0, sizeof(nl_addr));
 179         nl_addr.nl_family = AF_NETLINK;
 180
 181         if ((err = sendto(sk, request, header->nlmsg_len, 0,
 182                         (struct sockaddr *) &nl_addr, sizeof(nl_addr))) < 0)
 183                 goto done;
 184
 185         err = 0;
 186
 187 done:
 188         close(sk);
 189
 190         return err;
 191 }
 192
 193 int connman_inet_ifindex(const char *name)
 194 {
 195         struct ifreq ifr;
 196         int sk, err;
 197
 198         if (!name)
 199                 return -1;
 200
 201         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 202         if (sk < 0)
 203                 return -1;
 204
 205         memset(&ifr, 0, sizeof(ifr));
 206         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name) - 1);
 207
 208         err = ioctl(sk, SIOCGIFINDEX, &ifr);
 209
 210         close(sk);
 211
 212         if (err < 0)
 213                 return -1;
 214
 215         return ifr.ifr_ifindex;
 216 }
 217
 218 char *connman_inet_ifname(int index)
 219 {
 220         struct ifreq ifr;
 221         int sk, err;
 222
 223         if (index < 0)
 224                 return NULL;
 225
 226         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 227         if (sk < 0)
 228                 return NULL;
 229
 230         memset(&ifr, 0, sizeof(ifr));
 231         ifr.ifr_ifindex = index;
 232
 233         err = ioctl(sk, SIOCGIFNAME, &ifr);
 234
 235         close(sk);
 236
 237         if (err < 0)
 238                 return NULL;
 239
 240         return g_strdup(ifr.ifr_name);
 241 }
 242
 243 int connman_inet_ifup(int index)
 244 {
 245         struct ifreq ifr;
 246         int sk, err;
 247
 248         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 249         if (sk < 0)
 250                 return -errno;
 251
 252         memset(&ifr, 0, sizeof(ifr));
 253         ifr.ifr_ifindex = index;
 254
 255         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 256                 err = -errno;
 257                 goto done;
 258         }
 259
 260         if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
 261                 err = -errno;
 262                 goto done;
 263         }
 264
 265         if (ifr.ifr_flags & IFF_UP) {
 266                 err = -EALREADY;
 267                 goto done;
 268         }
 269
 270         ifr.ifr_flags |= (IFF_UP|IFF_DYNAMIC);
 271
 272         if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0) {
 273                 err = -errno;
 274                 goto done;
 275         }
 276
 277         err = 0;
 278
 279 done:
 280         close(sk);
 281
 282         return err;
 283 }
 284
 285 int connman_inet_ifdown(int index)
 286 {
 287         struct ifreq ifr, addr_ifr;
 288         struct sockaddr_in *addr;
 289         int sk, err;
 290
 291         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 292         if (sk < 0)
 293                 return -errno;
 294
 295         memset(&ifr, 0, sizeof(ifr));
 296         ifr.ifr_ifindex = index;
 297
 298         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 299                 err = -errno;
 300                 goto done;
 301         }
 302
 303         if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
 304                 err = -errno;
 305                 goto done;
 306         }
 307
 308         memset(&addr_ifr, 0, sizeof(addr_ifr));
 309         memcpy(&addr_ifr.ifr_name, &ifr.ifr_name, sizeof(ifr.ifr_name) - 1);
 310         addr = (struct sockaddr_in *)&addr_ifr.ifr_addr;
 311         addr->sin_family = AF_INET;
 312         if (ioctl(sk, SIOCSIFADDR, &addr_ifr) < 0)
 313                 connman_warn("Could not clear IPv4 address index %d", index);
 314
 315         if (!(ifr.ifr_flags & IFF_UP)) {
 316                 err = -EALREADY;
 317                 goto done;
 318         }
 319
 320         ifr.ifr_flags = (ifr.ifr_flags & ~IFF_UP) | IFF_DYNAMIC;
 321
 322         if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0)
 323                 err = -errno;
 324         else
 325                 err = 0;
 326
 327 done:
 328         close(sk);
 329
 330         return err;
 331 }
 332
 333 #if defined TIZEN_EXT
 334 void connman_inet_update_device_ident(struct connman_device *device)
 335 {
 336         int index;
 337         enum connman_device_type type;
 338         char *ident = NULL, *addr = NULL;
 339
 340         index = connman_device_get_index(device);
 341         type = connman_device_get_type(device);
 342
 343         switch (type) {
 344         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 345                 return;
 346         case CONNMAN_DEVICE_TYPE_ETHERNET:
 347         case CONNMAN_DEVICE_TYPE_GADGET:
 348         case CONNMAN_DEVICE_TYPE_WIFI:
 349                 addr = index2addr(index);
 350                 break;
 351         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 352         case CONNMAN_DEVICE_TYPE_CELLULAR:
 353         case CONNMAN_DEVICE_TYPE_GPS:
 354         case CONNMAN_DEVICE_TYPE_VENDOR:
 355                 break;
 356         }
 357
 358         switch (type) {
 359         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 360         case CONNMAN_DEVICE_TYPE_VENDOR:
 361         case CONNMAN_DEVICE_TYPE_GPS:
 362                 break;
 363         case CONNMAN_DEVICE_TYPE_ETHERNET:
 364         case CONNMAN_DEVICE_TYPE_GADGET:
 365                 ident = index2ident(index, NULL);
 366                 break;
 367         case CONNMAN_DEVICE_TYPE_WIFI:
 368                 ident = index2ident(index, NULL);
 369                 break;
 370         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 371                 break;
 372         case CONNMAN_DEVICE_TYPE_CELLULAR:
 373                 ident = index2ident(index, NULL);
 374                 break;
 375         }
 376
 377         if (ident != NULL) {
 378                 connman_device_set_ident(device, ident);
 379                 g_free(ident);
 380         }
 381
 382         if (addr != NULL) {
 383                 connman_device_set_string(device, "Address", addr);
 384                 g_free(addr);
 385         }
 386 }
 387 #endif
 388
 389 struct in6_ifreq {
 390         struct in6_addr ifr6_addr;
 391         __u32 ifr6_prefixlen;
 392         unsigned int ifr6_ifindex;
 393 };
 394
 395 int connman_inet_set_ipv6_address(int index,
 396                 struct connman_ipaddress *ipaddress)
 397 {
 398         int err;
 399         unsigned char prefix_len;
 400         const char *address;
 401
 402         if (!ipaddress->local)
 403                 return 0;
 404
 405         prefix_len = ipaddress->prefixlen;
 406         address = ipaddress->local;
 407
 408         DBG("index %d address %s prefix_len %d", index, address, prefix_len);
 409
 410         err = __connman_inet_modify_address(RTM_NEWADDR,
 411                                 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET6,
 412                                 address, NULL, prefix_len, NULL);
 413         if (err < 0) {
 414                 connman_error("%s: %s", __func__, strerror(-err));
 415                 return err;
 416         }
 417
 418         return 0;
 419 }
 420
 421 int connman_inet_set_address(int index, struct connman_ipaddress *ipaddress)
 422 {
 423         int err;
 424         unsigned char prefix_len;
 425         const char *address, *broadcast, *peer;
 426
 427         if (!ipaddress->local)
 428                 return -1;
 429
 430         prefix_len = ipaddress->prefixlen;
 431         address = ipaddress->local;
 432         broadcast = ipaddress->broadcast;
 433         peer = ipaddress->peer;
 434
 435         DBG("index %d address %s prefix_len %d", index, address, prefix_len);
 436
 437         err = __connman_inet_modify_address(RTM_NEWADDR,
 438                                 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET,
 439                                 address, peer, prefix_len, broadcast);
 440         if (err < 0) {
 441                 connman_error("%s: %s", __func__, strerror(-err));
 442                 return err;
 443         }
 444
 445         return 0;
 446 }
 447
 448 int connman_inet_clear_ipv6_address(int index, const char *address,
 449                                                         int prefix_len)
 450 {
 451         int err;
 452
 453         DBG("index %d address %s prefix_len %d", index, address, prefix_len);
 454
 455         if (!address)
 456                 return -EINVAL;
 457
 458         err = __connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET6,
 459                                 address, NULL, prefix_len, NULL);
 460         if (err < 0) {
 461                 connman_error("%s: %s", __func__, strerror(-err));
 462                 return err;
 463         }
 464
 465         return 0;
 466 }
 467
 468 int connman_inet_clear_address(int index, struct connman_ipaddress *ipaddress)
 469 {
 470         int err;
 471         unsigned char prefix_len;
 472         const char *address, *broadcast, *peer;
 473
 474         prefix_len = ipaddress->prefixlen;
 475         address = ipaddress->local;
 476         broadcast = ipaddress->broadcast;
 477         peer = ipaddress->peer;
 478
 479         DBG("index %d address %s prefix_len %d peer %s broadcast %s", index,
 480                 address, prefix_len, peer, broadcast);
 481
 482         if (!address)
 483                 return -EINVAL;
 484
 485         err = __connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET,
 486                                 address, peer, prefix_len, broadcast);
 487         if (err < 0) {
 488                 connman_error("%s: %s", __func__, strerror(-err));
 489                 return err;
 490         }
 491
 492         return 0;
 493 }
 494
 495 int connman_inet_add_host_route(int index, const char *host,
 496                                 const char *gateway)
 497 {
 498         return connman_inet_add_network_route(index, host, gateway, NULL);
 499 }
 500
 501 int connman_inet_del_host_route(int index, const char *host)
 502 {
 503         return connman_inet_del_network_route(index, host);
 504 }
 505
 506 int connman_inet_add_network_route(int index, const char *host,
 507                                         const char *gateway,
 508                                         const char *netmask)
 509 {
 510         struct ifreq ifr;
 511         struct rtentry rt;
 512         struct sockaddr_in addr;
 513         int sk, err = 0;
 514
 515         DBG("index %d host %s gateway %s netmask %s", index,
 516                 host, gateway, netmask);
 517
 518         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 519         if (sk < 0) {
 520                 err = -errno;
 521                 goto out;
 522         }
 523
 524         memset(&ifr, 0, sizeof(ifr));
 525         ifr.ifr_ifindex = index;
 526
 527         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 528                 err = -errno;
 529                 close(sk);
 530                 goto out;
 531         }
 532
 533         DBG("ifname %s", ifr.ifr_name);
 534
 535         memset(&rt, 0, sizeof(rt));
 536         rt.rt_flags = RTF_UP;
 537         if (gateway)
 538                 rt.rt_flags |= RTF_GATEWAY;
 539         if (!netmask)
 540                 rt.rt_flags |= RTF_HOST;
 541
 542         memset(&addr, 0, sizeof(addr));
 543         addr.sin_family = AF_INET;
 544         addr.sin_addr.s_addr = inet_addr(host);
 545         memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
 546
 547         memset(&addr, 0, sizeof(addr));
 548         addr.sin_family = AF_INET;
 549         if (gateway)
 550                 addr.sin_addr.s_addr = inet_addr(gateway);
 551         else
 552                 addr.sin_addr.s_addr = INADDR_ANY;
 553         memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
 554
 555         memset(&addr, 0, sizeof(addr));
 556         addr.sin_family = AF_INET;
 557         addr.sin_addr.s_addr = INADDR_ANY;
 558         if (netmask)
 559                 addr.sin_addr.s_addr = inet_addr(netmask);
 560         else
 561                 addr.sin_addr.s_addr = INADDR_ANY;
 562         memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
 563
 564         rt.rt_dev = ifr.ifr_name;
 565
 566         if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
 567                 err = -errno;
 568
 569         close(sk);
 570
 571 out:
 572         if (err < 0)
 573                 connman_error("Adding host route failed (%s)",
 574                                                         strerror(-err));
 575
 576         return err;
 577 }
 578
 579 int connman_inet_del_network_route(int index, const char *host)
 580 {
 581         struct ifreq ifr;
 582         struct rtentry rt;
 583         struct sockaddr_in addr;
 584         int sk, err = 0;
 585
 586         DBG("index %d host %s", index, host);
 587
 588         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 589         if (sk < 0) {
 590                 err = -errno;
 591                 goto out;
 592         }
 593
 594         memset(&ifr, 0, sizeof(ifr));
 595         ifr.ifr_ifindex = index;
 596
 597         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 598                 err = -errno;
 599                 close(sk);
 600                 goto out;
 601         }
 602
 603         DBG("ifname %s", ifr.ifr_name);
 604
 605         memset(&rt, 0, sizeof(rt));
 606         rt.rt_flags = RTF_UP | RTF_HOST;
 607
 608         memset(&addr, 0, sizeof(addr));
 609         addr.sin_family = AF_INET;
 610         addr.sin_addr.s_addr = inet_addr(host);
 611         memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
 612
 613         rt.rt_dev = ifr.ifr_name;
 614
 615         if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
 616                 err = -errno;
 617
 618         close(sk);
 619
 620 out:
 621         if (err < 0)
 622                 connman_error("Deleting host route failed (%s)",
 623                                                         strerror(-err));
 624
 625         return err;
 626 }
 627
 628 int connman_inet_del_ipv6_network_route(int index, const char *host,
 629                                                 unsigned char prefix_len)
 630 {
 631         struct in6_rtmsg rt;
 632         int sk, err = 0;
 633
 634         DBG("index %d host %s", index, host);
 635
 636         if (!host)
 637                 return -EINVAL;
 638
 639         memset(&rt, 0, sizeof(rt));
 640
 641         rt.rtmsg_dst_len = prefix_len;
 642
 643         if (inet_pton(AF_INET6, host, &rt.rtmsg_dst) < 0) {
 644                 err = -errno;
 645                 goto out;
 646         }
 647
 648         rt.rtmsg_flags = RTF_UP | RTF_HOST;
 649
 650         rt.rtmsg_metric = 1;
 651         rt.rtmsg_ifindex = index;
 652
 653         sk = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 654         if (sk < 0) {
 655                 err = -errno;
 656                 goto out;
 657         }
 658
 659         if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
 660                 err = -errno;
 661
 662         close(sk);
 663
 664 out:
 665         if (err < 0)
 666                 connman_error("Del IPv6 host route error (%s)",
 667                                                 strerror(-err));
 668
 669         return err;
 670 }
 671
 672 int connman_inet_del_ipv6_host_route(int index, const char *host)
 673 {
 674         return connman_inet_del_ipv6_network_route(index, host, 128);
 675 }
 676
 677 int connman_inet_add_ipv6_network_route(int index, const char *host,
 678                                         const char *gateway,
 679                                         unsigned char prefix_len)
 680 {
 681         struct in6_rtmsg rt;
 682         int sk, err = 0;
 683
 684         DBG("index %d host %s gateway %s", index, host, gateway);
 685
 686         if (!host)
 687                 return -EINVAL;
 688
 689         memset(&rt, 0, sizeof(rt));
 690
 691         rt.rtmsg_dst_len = prefix_len;
 692
 693         if (inet_pton(AF_INET6, host, &rt.rtmsg_dst) < 0) {
 694                 err = -errno;
 695                 goto out;
 696         }
 697
 698         rt.rtmsg_flags = RTF_UP | RTF_HOST;
 699
 700         if (gateway) {
 701                 rt.rtmsg_flags |= RTF_GATEWAY;
 702                 inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
 703         }
 704
 705         rt.rtmsg_metric = 1;
 706         rt.rtmsg_ifindex = index;
 707
 708         sk = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 709         if (sk < 0) {
 710                 err = -errno;
 711                 goto out;
 712         }
 713
 714         if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
 715                 err = -errno;
 716
 717         close(sk);
 718
 719 out:
 720         if (err < 0)
 721                 connman_error("Set IPv6 host route error (%s)",
 722                                                 strerror(-err));
 723
 724         return err;
 725 }
 726
 727 int connman_inet_add_ipv6_host_route(int index, const char *host,
 728                                         const char *gateway)
 729 {
 730         return connman_inet_add_ipv6_network_route(index, host, gateway, 128);
 731 }
 732
 733 int connman_inet_clear_ipv6_gateway_address(int index, const char *gateway)
 734 {
 735         struct in6_rtmsg rt;
 736         int sk, err = 0;
 737
 738         DBG("index %d gateway %s", index, gateway);
 739
 740         if (!gateway)
 741                 return -EINVAL;
 742
 743         memset(&rt, 0, sizeof(rt));
 744
 745         if (inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway) < 0) {
 746                 err = -errno;
 747                 goto out;
 748         }
 749
 750         rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
 751         rt.rtmsg_metric = 1;
 752         rt.rtmsg_dst_len = 0;
 753         rt.rtmsg_ifindex = index;
 754
 755         sk = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 756         if (sk < 0) {
 757                 err = -errno;
 758                 goto out;
 759         }
 760
 761         if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
 762                 err = -errno;
 763
 764         close(sk);
 765
 766 out:
 767         if (err < 0)
 768                 connman_error("Clear default IPv6 gateway error (%s)",
 769                                                 strerror(-err));
 770
 771         return err;
 772 }
 773
 774 int connman_inet_set_gateway_interface(int index)
 775 {
 776         struct ifreq ifr;
 777         struct rtentry rt;
 778         struct sockaddr_in addr;
 779         int sk, err = 0;
 780
 781         DBG("index %d", index);
 782
 783         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 784         if (sk < 0) {
 785                 err = -errno;
 786                 goto out;
 787         }
 788
 789         memset(&ifr, 0, sizeof(ifr));
 790         ifr.ifr_ifindex = index;
 791
 792         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 793                 err = -errno;
 794                 close(sk);
 795                 goto out;
 796         }
 797
 798         DBG("ifname %s", ifr.ifr_name);
 799
 800         memset(&rt, 0, sizeof(rt));
 801         rt.rt_flags = RTF_UP;
 802
 803         memset(&addr, 0, sizeof(addr));
 804         addr.sin_family = AF_INET;
 805         addr.sin_addr.s_addr = INADDR_ANY;
 806
 807         memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
 808         memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
 809         memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
 810
 811         rt.rt_dev = ifr.ifr_name;
 812
 813         if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
 814                 err = -errno;
 815
 816         close(sk);
 817
 818 out:
 819         if (err < 0)
 820                 connman_error("Setting default interface route failed (%s)",
 821                                                         strerror(-err));
 822
 823         return err;
 824 }
 825
 826 int connman_inet_set_ipv6_gateway_interface(int index)
 827 {
 828         struct ifreq ifr;
 829         struct rtentry rt;
 830         struct sockaddr_in6 addr;
 831         const struct in6_addr any = IN6ADDR_ANY_INIT;
 832         int sk, err = 0;
 833
 834         DBG("index %d", index);
 835
 836         sk = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 837         if (sk < 0) {
 838                 err = -errno;
 839                 goto out;
 840         }
 841
 842         memset(&ifr, 0, sizeof(ifr));
 843         ifr.ifr_ifindex = index;
 844
 845         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 846                 err = -errno;
 847                 close(sk);
 848                 goto out;
 849         }
 850
 851         DBG("ifname %s", ifr.ifr_name);
 852
 853         memset(&rt, 0, sizeof(rt));
 854         rt.rt_flags = RTF_UP;
 855
 856         memset(&addr, 0, sizeof(addr));
 857         addr.sin6_family = AF_INET6;
 858         addr.sin6_addr = any;
 859
 860         memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
 861         memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
 862         memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
 863
 864         rt.rt_dev = ifr.ifr_name;
 865
 866         if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
 867                 err = -errno;
 868
 869         close(sk);
 870
 871 out:
 872         if (err < 0)
 873                 connman_error("Setting default interface route failed (%s)",
 874                                                         strerror(-err));
 875
 876         return err;
 877 }
 878
 879 int connman_inet_clear_gateway_address(int index, const char *gateway)
 880 {
 881         struct ifreq ifr;
 882         struct rtentry rt;
 883         struct sockaddr_in addr;
 884         int sk, err = 0;
 885
 886         DBG("index %d gateway %s", index, gateway);
 887
 888         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 889         if (sk < 0) {
 890                 err = -errno;
 891                 goto out;
 892         }
 893
 894         memset(&ifr, 0, sizeof(ifr));
 895         ifr.ifr_ifindex = index;
 896
 897         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 898                 err = -errno;
 899                 close(sk);
 900                 goto out;
 901         }
 902
 903         DBG("ifname %s", ifr.ifr_name);
 904
 905         memset(&rt, 0, sizeof(rt));
 906         rt.rt_flags = RTF_UP | RTF_GATEWAY;
 907
 908         memset(&addr, 0, sizeof(addr));
 909         addr.sin_family = AF_INET;
 910         addr.sin_addr.s_addr = INADDR_ANY;
 911         memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
 912
 913         memset(&addr, 0, sizeof(addr));
 914         addr.sin_family = AF_INET;
 915         addr.sin_addr.s_addr = inet_addr(gateway);
 916         memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
 917
 918         memset(&addr, 0, sizeof(addr));
 919         addr.sin_family = AF_INET;
 920         addr.sin_addr.s_addr = INADDR_ANY;
 921         memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
 922
 923         if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
 924                 err = -errno;
 925
 926         close(sk);
 927
 928 out:
 929         if (err < 0)
 930                 connman_error("Removing default gateway route failed (%s)",
 931                                                         strerror(-err));
 932
 933         return err;
 934 }
 935
 936 int connman_inet_clear_gateway_interface(int index)
 937 {
 938         struct ifreq ifr;
 939         struct rtentry rt;
 940         struct sockaddr_in addr;
 941         int sk, err = 0;
 942
 943         DBG("index %d", index);
 944
 945         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 946         if (sk < 0) {
 947                 err = -errno;
 948                 goto out;
 949         }
 950
 951         memset(&ifr, 0, sizeof(ifr));
 952         ifr.ifr_ifindex = index;
 953
 954         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 955                 err = -errno;
 956                 close(sk);
 957                 goto out;
 958         }
 959
 960         DBG("ifname %s", ifr.ifr_name);
 961
 962         memset(&rt, 0, sizeof(rt));
 963         rt.rt_flags = RTF_UP;
 964
 965         memset(&addr, 0, sizeof(addr));
 966         addr.sin_family = AF_INET;
 967         addr.sin_addr.s_addr = INADDR_ANY;
 968
 969         memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
 970         memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
 971         memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
 972
 973         rt.rt_dev = ifr.ifr_name;
 974
 975         if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
 976                 err = -errno;
 977
 978         close(sk);
 979
 980 out:
 981         if (err < 0)
 982                 connman_error("Removing default interface route failed (%s)",
 983                                                         strerror(-err));
 984
 985         return err;
 986 }
 987
 988 int connman_inet_clear_ipv6_gateway_interface(int index)
 989 {
 990         struct ifreq ifr;
 991         struct rtentry rt;
 992         struct sockaddr_in6 addr;
 993         const struct in6_addr any = IN6ADDR_ANY_INIT;
 994         int sk, err = 0;
 995
 996         DBG("index %d", index);
 997
 998         sk = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
 999         if (sk < 0) {
1000                 err = -errno;
1001                 goto out;
1002         }
1003
1004         memset(&ifr, 0, sizeof(ifr));
1005         ifr.ifr_ifindex = index;
1006
1007         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1008                 err = -errno;
1009                 close(sk);
1010                 goto out;
1011         }
1012
1013         DBG("ifname %s", ifr.ifr_name);
1014
1015         memset(&rt, 0, sizeof(rt));
1016         rt.rt_flags = RTF_UP;
1017
1018         memset(&addr, 0, sizeof(addr));
1019         addr.sin6_family = AF_INET6;
1020         addr.sin6_addr = any;
1021
1022         memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
1023         memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
1024         memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
1025
1026         rt.rt_dev = ifr.ifr_name;
1027
1028         if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
1029                 err = -errno;
1030
1031         close(sk);
1032
1033 out:
1034         if (err < 0)
1035                 connman_error("Removing default interface route failed (%s)",
1036                                                         strerror(-err));
1037
1038         return err;
1039 }
1040
1041 bool connman_inet_compare_subnet(int index, const char *host)
1042 {
1043         struct ifreq ifr;
1044         struct in_addr _host_addr;
1045         in_addr_t host_addr, netmask_addr, if_addr;
1046         struct sockaddr_in *netmask, *addr;
1047         int sk;
1048
1049         DBG("host %s", host);
1050
1051         if (!host)
1052                 return false;
1053
1054         if (inet_aton(host, &_host_addr) == 0)
1055                 return -1;
1056         host_addr = _host_addr.s_addr;
1057
1058         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
1059         if (sk < 0)
1060                 return false;
1061
1062         memset(&ifr, 0, sizeof(ifr));
1063         ifr.ifr_ifindex = index;
1064
1065         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1066                 close(sk);
1067                 return false;
1068         }
1069
1070         if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0) {
1071                 close(sk);
1072                 return false;
1073         }
1074
1075         netmask = (struct sockaddr_in *)&ifr.ifr_netmask;
1076         netmask_addr = netmask->sin_addr.s_addr;
1077
1078         if (ioctl(sk, SIOCGIFADDR, &ifr) < 0) {
1079                 close(sk);
1080                 return false;
1081         }
1082
1083         close(sk);
1084
1085         addr = (struct sockaddr_in *)&ifr.ifr_addr;
1086         if_addr = addr->sin_addr.s_addr;
1087
1088         return ((if_addr & netmask_addr) == (host_addr & netmask_addr));
1089 }
1090
1091 int connman_inet_remove_from_bridge(int index, const char *bridge)
1092 {
1093         struct ifreq ifr;
1094         int sk, err = 0;
1095
1096         if (!bridge)
1097                 return -EINVAL;
1098
1099         sk = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
1100         if (sk < 0) {
1101                 err = -errno;
1102                 goto out;
1103         }
1104
1105         memset(&ifr, 0, sizeof(ifr));
1106         strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name) - 1);
1107         ifr.ifr_ifindex = index;
1108
1109         if (ioctl(sk, SIOCBRDELIF, &ifr) < 0)
1110                 err = -errno;
1111
1112         close(sk);
1113
1114 out:
1115         if (err < 0)
1116                 connman_error("Remove interface from bridge error %s",
1117                                                         strerror(-err));
1118
1119         return err;
1120 }
1121
1122 int connman_inet_add_to_bridge(int index, const char *bridge)
1123 {
1124         struct ifreq ifr;
1125         int sk, err = 0;
1126
1127         if (!bridge)
1128                 return -EINVAL;
1129
1130         sk = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
1131         if (sk < 0) {
1132                 err = -errno;
1133                 goto out;
1134         }
1135
1136         memset(&ifr, 0, sizeof(ifr));
1137         strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name) - 1);
1138         ifr.ifr_ifindex = index;
1139
1140         if (ioctl(sk, SIOCBRADDIF, &ifr) < 0)
1141                 err = -errno;
1142
1143         close(sk);
1144
1145 out:
1146         if (err < 0)
1147                 connman_error("Add interface to bridge error %s",
1148                                                         strerror(-err));
1149
1150         return err;
1151 }
1152
1153 int connman_inet_set_mtu(int index, int mtu)
1154 {
1155         struct ifreq ifr;
1156         int sk, err;
1157
1158         sk = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
1159         if (sk < 0)
1160                 return sk;
1161
1162         memset(&ifr, 0, sizeof(ifr));
1163         ifr.ifr_ifindex = index;
1164
1165         err = ioctl(sk, SIOCGIFNAME, &ifr);
1166         if (err == 0) {
1167                 ifr.ifr_mtu = mtu;
1168                 err = ioctl(sk, SIOCSIFMTU, &ifr);
1169         }
1170
1171         close(sk);
1172         return err;
1173 }
1174
1175 int connman_inet_setup_tunnel(char *tunnel, int mtu)
1176 {
1177         struct ifreq ifr;
1178         int sk, err, index;
1179         __u32 mask;
1180         __u32 flags;
1181
1182         if (!tunnel)
1183                 return -EINVAL;
1184
1185         sk = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
1186         if (sk < 0)
1187                 return sk;
1188
1189         index = if_nametoindex(tunnel);
1190
1191         err = connman_inet_set_mtu(index, mtu);
1192         if (err != 0)
1193                 goto done;
1194
1195         memset(&ifr, 0, sizeof(ifr));
1196         strncpy(ifr.ifr_name, tunnel, sizeof(ifr.ifr_name) - 1);
1197         err = ioctl(sk, SIOCGIFFLAGS, &ifr);
1198         if (err)
1199                 goto done;
1200
1201         mask = IFF_UP;
1202         flags = IFF_UP;
1203
1204         if ((ifr.ifr_flags ^ flags) & mask) {
1205                 ifr.ifr_flags &= ~mask;
1206                 ifr.ifr_flags |= mask & flags;
1207                 err = ioctl(sk, SIOCSIFFLAGS, &ifr);
1208                 if (err)
1209                         connman_error("SIOCSIFFLAGS failed: %s",
1210                                                         strerror(errno));
1211         }
1212
1213 done:
1214         close(sk);
1215         return err;
1216 }
1217
1218 int connman_inet_create_tunnel(char **iface)
1219 {
1220         struct ifreq ifr;
1221         int i, fd;
1222
1223         fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
1224         if (fd < 0) {
1225                 i = -errno;
1226                 connman_error("Failed to open /dev/net/tun: %s",
1227                                 strerror(errno));
1228                 return i;
1229         }
1230
1231         memset(&ifr, 0, sizeof(ifr));
1232         ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
1233
1234         for (i = 0; i < 256; i++) {
1235                 sprintf(ifr.ifr_name, "tun%d", i);
1236
1237                 if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
1238                         break;
1239         }
1240
1241         if (i == 256) {
1242                 connman_error("Failed to find available tun device");
1243                 close(fd);
1244                 return -ENODEV;
1245         }
1246
1247         *iface = g_strdup(ifr.ifr_name);
1248
1249         return fd;
1250 }
1251
1252 /*
1253  * This callback struct is used when sending router and neighbor
1254  * solicitation and advertisement messages.
1255  */
1256 struct xs_cb_data {
1257         GIOChannel *channel;
1258         void *callback;
1259         struct sockaddr_in6 addr;
1260         guint timeout;
1261         guint watch_id;
1262         void *user_data;
1263 };
1264
1265 #define CMSG_BUF_LEN 512
1266 #define IN6ADDR_ALL_NODES_MC_INIT \
1267         { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x1 } } } /* ff02::1 */
1268 #define IN6ADDR_ALL_ROUTERS_MC_INIT \
1269         { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x2 } } } /* ff02::2 */
1270
1271 static const struct in6_addr in6addr_all_nodes_mc = IN6ADDR_ALL_NODES_MC_INIT;
1272 static const struct in6_addr in6addr_all_routers_mc =
1273                                                 IN6ADDR_ALL_ROUTERS_MC_INIT;
1274
1275 static void xs_cleanup(struct xs_cb_data *data)
1276 {
1277         if (data->channel) {
1278                 g_io_channel_shutdown(data->channel, TRUE, NULL);
1279                 g_io_channel_unref(data->channel);
1280                 data->channel = NULL;
1281         }
1282
1283         if (data->timeout > 0)
1284                 g_source_remove(data->timeout);
1285
1286         if (data->watch_id > 0)
1287                 g_source_remove(data->watch_id);
1288
1289         g_free(data);
1290 }
1291
1292 static gboolean rs_timeout_cb(gpointer user_data)
1293 {
1294         struct xs_cb_data *data = user_data;
1295
1296         DBG("user data %p", user_data);
1297
1298         if (!data)
1299                 return FALSE;
1300
1301         if (data->callback) {
1302                 __connman_inet_rs_cb_t cb = data->callback;
1303                 cb(NULL, 0, data->user_data);
1304         }
1305
1306         data->timeout = 0;
1307         xs_cleanup(data);
1308         return FALSE;
1309 }
1310
1311 static int icmpv6_recv(int fd, gpointer user_data)
1312 {
1313         struct msghdr mhdr;
1314         struct iovec iov;
1315         unsigned char chdr[CMSG_BUF_LEN];
1316         unsigned char buf[1540];
1317         struct xs_cb_data *data = user_data;
1318         struct nd_router_advert *hdr;
1319         struct sockaddr_in6 saddr;
1320         ssize_t len;
1321         __connman_inet_rs_cb_t cb = data->callback;
1322
1323         DBG("");
1324
1325         iov.iov_len = sizeof(buf);
1326         iov.iov_base = buf;
1327
1328         mhdr.msg_name = (void *)&saddr;
1329         mhdr.msg_namelen = sizeof(struct sockaddr_in6);
1330         mhdr.msg_flags = 0;
1331         mhdr.msg_iov = &iov;
1332         mhdr.msg_iovlen = 1;
1333         mhdr.msg_control = (void *)chdr;
1334         mhdr.msg_controllen = CMSG_BUF_LEN;
1335
1336         len = recvmsg(fd, &mhdr, 0);
1337         if (len < 0) {
1338                 cb(NULL, 0, data->user_data);
1339                 xs_cleanup(data);
1340                 return -errno;
1341         }
1342
1343 #if defined TIZEN_EXT
1344         /* Set Received Source Address from router as IPv6 Gateway Address */
1345         char src_addr[INET6_ADDRSTRLEN];
1346         if(inet_ntop(AF_INET6, &(saddr.sin6_addr), src_addr, INET6_ADDRSTRLEN)
1347                         == NULL) {
1348                 xs_cleanup(data);
1349                 return -errno;
1350         }
1351         DBG("Received Source Address %s from router", src_addr);
1352
1353         /* icmpv6_recv() function can be called in two scenarios :
1354          * 1. When __connman_inet_ipv6_send_rs() is called from check_dhcpv6()
1355          * 2. When __connman_inet_ipv6_send_rs() is called from
1356          * __connman_6to4_probe()
1357          * In the second case it is not  required to set DHCPv6 Gateway  Address
1358          * as DHCPv6 was not started and  network structure was not passed as
1359          * user_data. If it is tried  to add Source Address as  Gateway Address
1360          * then it will lead to  crash because of  user_data being ip_address
1361          * instead of network structure. So Adding Gateway Address in case 1st
1362          * case only.
1363          */
1364         char *address = data->user_data;
1365         int err = 0;
1366         unsigned char buffer[sizeof(struct in6_addr)] = {0, };
1367         /* Checking if user_data is an ip_address */
1368         err = inet_pton(AF_INET, address, buffer);
1369         /* Setting Received Source Address from
1370          * router as Gateway Address */
1371         if(err <= 0)
1372                 __connman_network_set_auto_ipv6_gateway(src_addr, data->user_data);
1373 #endif
1374         hdr = (struct nd_router_advert *)buf;
1375         DBG("code %d len %zd hdr %zd", hdr->nd_ra_code, len,
1376                                 sizeof(struct nd_router_advert));
1377         if (hdr->nd_ra_code != 0)
1378                 return 0;
1379
1380         cb(hdr, len, data->user_data);
1381         xs_cleanup(data);
1382
1383         return len;
1384 }
1385
1386 static gboolean icmpv6_event(GIOChannel *chan, GIOCondition cond, gpointer data)
1387 {
1388         int fd, ret;
1389
1390         DBG("");
1391
1392         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1393                 return FALSE;
1394
1395         fd = g_io_channel_unix_get_fd(chan);
1396         ret = icmpv6_recv(fd, data);
1397         if (ret == 0)
1398                 return TRUE;
1399
1400         return FALSE;
1401 }
1402
1403 /* Adapted from RFC 1071 "C" Implementation Example */
1404 static uint16_t csum(const void *phdr, const void *data, socklen_t datalen,
1405                 const void *extra_data, socklen_t extra_datalen)
1406 {
1407         register unsigned long sum = 0;
1408         socklen_t count;
1409         uint16_t *addr;
1410         int i;
1411
1412         /* caller must make sure datalen is even */
1413
1414         addr = (uint16_t *)phdr;
1415         for (i = 0; i < 20; i++)
1416                 sum += *addr++;
1417
1418         count = datalen;
1419         addr = (uint16_t *)data;
1420
1421         while (count > 1) {
1422                 sum += *(addr++);
1423                 count -= 2;
1424         }
1425
1426         if (extra_data) {
1427                 count = extra_datalen;
1428                 addr = (uint16_t *)extra_data;
1429
1430                 while (count > 1) {
1431                         sum += *(addr++);
1432                         count -= 2;
1433                 }
1434         }
1435
1436         while (sum >> 16)
1437                 sum = (sum & 0xffff) + (sum >> 16);
1438
1439         return (uint16_t)~sum;
1440 }
1441
1442 static int ndisc_send_unspec(int type, int oif, const struct in6_addr *dest,
1443                         const struct in6_addr *source,
1444                         unsigned char *buf, size_t len, uint16_t lifetime)
1445 {
1446         struct _phdr {
1447                 struct in6_addr src;
1448                 struct in6_addr dst;
1449                 uint32_t plen;
1450                 uint8_t reserved[3];
1451                 uint8_t nxt;
1452         } phdr;
1453
1454         struct {
1455                 struct ip6_hdr ip;
1456                 union {
1457                         struct icmp6_hdr icmp;
1458                         struct nd_neighbor_solicit ns;
1459                         struct nd_router_solicit rs;
1460                         struct nd_router_advert ra;
1461                 } i;
1462         } frame;
1463
1464         struct msghdr msgh;
1465         struct cmsghdr *cmsg;
1466         struct in6_pktinfo *pinfo;
1467         struct sockaddr_in6 dst, src;
1468         char cbuf[CMSG_SPACE(sizeof(*pinfo))];
1469         struct iovec iov[2];
1470         int fd, datalen, ret, iovlen = 1;
1471 #if defined TIZEN_EXT
1472         char ebuf[256];
1473 #endif
1474
1475         DBG("");
1476
1477         fd = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_RAW);
1478         if (fd < 0)
1479                 return -errno;
1480
1481         memset(&frame, 0, sizeof(frame));
1482         memset(&dst, 0, sizeof(dst));
1483
1484         if (type == ND_ROUTER_SOLICIT)
1485                 datalen = sizeof(frame.i.rs); /* 8, csum() safe */
1486         else if (type == ND_ROUTER_ADVERT) {
1487                 datalen = sizeof(frame.i.ra); /* 16, csum() safe */
1488                 frame.i.ra.nd_ra_router_lifetime = htons(lifetime);
1489         } else if (type == ND_NEIGHBOR_SOLICIT) {
1490                 datalen = sizeof(frame.i.ns); /* 24, csum() safe */
1491                 memcpy(&frame.i.ns.nd_ns_target, buf, sizeof(struct in6_addr));
1492         } else {
1493                 close(fd);
1494                 return -EINVAL;
1495         }
1496
1497         dst.sin6_addr = *dest;
1498
1499         if (source)
1500                 src.sin6_addr = *source;
1501         else
1502                 src.sin6_addr = in6addr_any;
1503
1504         /* Fill in the IPv6 header */
1505         frame.ip.ip6_vfc = 0x60;
1506         frame.ip.ip6_plen = htons(datalen + len);
1507         frame.ip.ip6_nxt = IPPROTO_ICMPV6;
1508         frame.ip.ip6_hlim = 255;
1509         frame.ip.ip6_dst = dst.sin6_addr;
1510         frame.ip.ip6_src = src.sin6_addr;
1511         /* all other fields are already set to zero */
1512
1513         /* Prepare pseudo header for csum */
1514         memset(&phdr, 0, sizeof(phdr));
1515         phdr.dst = dst.sin6_addr;
1516         phdr.src = src.sin6_addr;
1517         phdr.plen = htonl(datalen + len);
1518         phdr.nxt = IPPROTO_ICMPV6;
1519
1520         /* Fill in remaining ICMP header fields */
1521         frame.i.icmp.icmp6_type = type;
1522         frame.i.icmp.icmp6_cksum = csum(&phdr, &frame.i, datalen, buf, len);
1523
1524         iov[0].iov_base = &frame;
1525         iov[0].iov_len = sizeof(frame.ip) + datalen;
1526
1527         if (buf) {
1528                 iov[1].iov_base = buf;
1529                 iov[1].iov_len = len;
1530                 iovlen = 2;
1531         }
1532
1533         dst.sin6_family = AF_INET6;
1534         msgh.msg_name = &dst;
1535         msgh.msg_namelen = sizeof(dst);
1536         msgh.msg_iov = iov;
1537         msgh.msg_iovlen = iovlen;
1538         msgh.msg_flags = 0;
1539
1540         memset(cbuf, 0, CMSG_SPACE(sizeof(*pinfo)));
1541         cmsg = (struct cmsghdr *)cbuf;
1542         pinfo = (struct in6_pktinfo *)CMSG_DATA(cmsg);
1543         pinfo->ipi6_ifindex = oif;
1544
1545         cmsg->cmsg_len = CMSG_LEN(sizeof(*pinfo));
1546         cmsg->cmsg_level = IPPROTO_IPV6;
1547         cmsg->cmsg_type = IPV6_PKTINFO;
1548         msgh.msg_control = cmsg;
1549         msgh.msg_controllen = cmsg->cmsg_len;
1550
1551         ret = sendmsg(fd, &msgh, 0);
1552 #if defined TIZEN_EXT
1553         DBG("sendmsg errno: %d/%s", errno, strerror_r(errno, ebuf, sizeof(ebuf)));
1554 #endif
1555
1556         close(fd);
1557         return ret;
1558 }
1559
1560 static inline void ipv6_addr_set(struct in6_addr *addr,
1561                                 uint32_t w1, uint32_t w2,
1562                                 uint32_t w3, uint32_t w4)
1563 {
1564         addr->s6_addr32[0] = w1;
1565         addr->s6_addr32[1] = w2;
1566         addr->s6_addr32[2] = w3;
1567         addr->s6_addr32[3] = w4;
1568 }
1569
1570 static inline void ipv6_addr_solict_mult(const struct in6_addr *addr,
1571                                         struct in6_addr *solicited)
1572 {
1573         ipv6_addr_set(solicited, htonl(0xFF020000), 0, htonl(0x1),
1574                         htonl(0xFF000000) | addr->s6_addr32[3]);
1575 }
1576
1577 static int if_mc_group(int sock, int ifindex, const struct in6_addr *mc_addr,
1578                                                                 int cmd)
1579 {
1580         unsigned int val = 0;
1581         struct ipv6_mreq mreq;
1582         int ret;
1583
1584         memset(&mreq, 0, sizeof(mreq));
1585         mreq.ipv6mr_interface = ifindex;
1586         mreq.ipv6mr_multiaddr = *mc_addr;
1587
1588         ret = setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
1589                         &val, sizeof(int));
1590         if (ret < 0) {
1591                 ret = -errno;
1592                 DBG("Cannot set IPV6_MULTICAST_LOOP %d/%s", ret,
1593                         strerror(-ret));
1594                 return ret;
1595         }
1596
1597         ret = setsockopt(sock, IPPROTO_IPV6, cmd, &mreq, sizeof(mreq));
1598         if (ret < 0) {
1599                 ret = -errno;
1600                 DBG("Cannot set option %d %d/%s", cmd, ret, strerror(-ret));
1601                 return ret;
1602         }
1603
1604         return 0;
1605 }
1606
1607 int __connman_inet_ipv6_send_rs(int index, int timeout,
1608                         __connman_inet_rs_cb_t callback, void *user_data)
1609 {
1610         struct xs_cb_data *data;
1611         struct icmp6_filter filter;
1612         struct in6_addr solicit;
1613         struct in6_addr dst = in6addr_all_routers_mc;
1614         int sk;
1615
1616         if (timeout <= 0)
1617                 return -EINVAL;
1618
1619         data = g_try_malloc0(sizeof(struct xs_cb_data));
1620         if (!data)
1621                 return -ENOMEM;
1622
1623         data->callback = callback;
1624         data->user_data = user_data;
1625         data->timeout = g_timeout_add_seconds(timeout, rs_timeout_cb, data);
1626
1627         sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1628         if (sk < 0)
1629                 return -errno;
1630
1631         DBG("sock %d", sk);
1632
1633         ICMP6_FILTER_SETBLOCKALL(&filter);
1634         ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter);
1635
1636         setsockopt(sk, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
1637                                                 sizeof(struct icmp6_filter));
1638
1639         ipv6_addr_solict_mult(&dst, &solicit);
1640         if_mc_group(sk, index, &in6addr_all_nodes_mc, IPV6_JOIN_GROUP);
1641         if_mc_group(sk, index, &solicit, IPV6_JOIN_GROUP);
1642
1643         data->channel = g_io_channel_unix_new(sk);
1644         g_io_channel_set_close_on_unref(data->channel, TRUE);
1645
1646         g_io_channel_set_encoding(data->channel, NULL, NULL);
1647         g_io_channel_set_buffered(data->channel, FALSE);
1648
1649         data->watch_id = g_io_add_watch(data->channel,
1650                         G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1651                         icmpv6_event, data);
1652
1653         ndisc_send_unspec(ND_ROUTER_SOLICIT, index, &dst, NULL, NULL, 0, 0);
1654
1655         return 0;
1656 }
1657
1658 static inline void ipv6_addr_advert_mult(const struct in6_addr *addr,
1659                                         struct in6_addr *advert)
1660 {
1661         ipv6_addr_set(advert, htonl(0xFF020000), 0, htonl(0x2),
1662                         htonl(0xFF000000) | addr->s6_addr32[3]);
1663 }
1664
1665 #define MSG_SIZE_SEND 1452
1666
1667 static int inc_len(int len, int inc)
1668 {
1669         if (len > MSG_SIZE_SEND)
1670                 return -EINVAL;
1671
1672         len += inc;
1673         return len;
1674 }
1675
1676 int __connman_inet_ipv6_send_ra(int index, struct in6_addr *src_addr,
1677                                 GSList *prefixes, int router_lifetime)
1678 {
1679         GSList *list;
1680         struct in6_addr src, *source;
1681         struct in6_addr dst = in6addr_all_nodes_mc;
1682         GDHCPIAPrefix *prefix;
1683         unsigned char buf[MSG_SIZE_SEND];
1684         char addr_str[INET6_ADDRSTRLEN];
1685         int sk, err = 0;
1686         int len, count = 0;
1687
1688         if (!prefixes)
1689                 return -EINVAL;
1690
1691         sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1692         if (sk < 0)
1693                 return -errno;
1694
1695         if (!src_addr) {
1696                 __connman_inet_get_interface_ll_address(index, AF_INET6, &src);
1697                 source = &src;
1698         } else
1699                 source = src_addr;
1700
1701         DBG("sock %d index %d prefixes %p src %s lifetime %d", sk, index,
1702                 prefixes, inet_ntop(AF_INET6, source, addr_str,
1703                                 INET6_ADDRSTRLEN),
1704                 router_lifetime);
1705
1706         memset(buf, 0, MSG_SIZE_SEND);
1707         len = 0;
1708
1709         for (list = prefixes; list; list = list->next) {
1710                 struct nd_opt_prefix_info *pinfo;
1711
1712                 prefix = list->data;
1713                 pinfo = (struct nd_opt_prefix_info *)(buf + len);
1714
1715                 len = inc_len(len, sizeof(*pinfo));
1716                 if (len < 0) {
1717                         err = len;
1718                         goto out;
1719                 }
1720
1721                 pinfo->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION;
1722                 pinfo->nd_opt_pi_len = 4;
1723                 pinfo->nd_opt_pi_prefix_len = prefix->prefixlen;
1724                 pinfo->nd_opt_pi_flags_reserved = ND_OPT_PI_FLAG_ONLINK;
1725                 pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO;
1726                 if (router_lifetime > 0) {
1727                         pinfo->nd_opt_pi_valid_time = htonl(prefix->valid);
1728                         pinfo->nd_opt_pi_preferred_time =
1729                                                 htonl(prefix->preferred);
1730                 }
1731                 pinfo->nd_opt_pi_reserved2 = 0;
1732
1733                 memcpy(&pinfo->nd_opt_pi_prefix, &prefix->prefix,
1734                                                 sizeof(struct in6_addr));
1735
1736                 DBG("[%d] index %d prefix %s/%d", count, index,
1737                         inet_ntop(AF_INET6, &prefix->prefix, addr_str,
1738                                 INET6_ADDRSTRLEN), prefix->prefixlen);
1739
1740                 count++;
1741         }
1742
1743         if (count > 0) {
1744                 err = ndisc_send_unspec(ND_ROUTER_ADVERT, index, &dst, source,
1745                                         buf, len, router_lifetime);
1746                 if (err < 0)
1747                         DBG("cannot send RA %d/%s", err, strerror(-err));
1748         }
1749
1750 out:
1751         close(sk);
1752         return err;
1753 }
1754
1755 void __connman_inet_ipv6_stop_recv_rs(void *context)
1756 {
1757         if (!context)
1758                 return;
1759
1760         xs_cleanup(context);
1761 }
1762
1763 static int icmpv6_rs_recv(int fd, gpointer user_data)
1764 {
1765         struct msghdr mhdr;
1766         struct iovec iov;
1767         unsigned char chdr[CMSG_BUF_LEN];
1768         unsigned char buf[1540];
1769         struct xs_cb_data *data = user_data;
1770         struct nd_router_solicit *hdr;
1771         struct sockaddr_in6 saddr;
1772         ssize_t len;
1773         __connman_inet_recv_rs_cb_t cb = data->callback;
1774
1775         DBG("");
1776
1777         iov.iov_len = sizeof(buf);
1778         iov.iov_base = buf;
1779
1780         mhdr.msg_name = (void *)&saddr;
1781         mhdr.msg_namelen = sizeof(struct sockaddr_in6);
1782         mhdr.msg_flags = 0;
1783         mhdr.msg_iov = &iov;
1784         mhdr.msg_iovlen = 1;
1785         mhdr.msg_control = (void *)chdr;
1786         mhdr.msg_controllen = CMSG_BUF_LEN;
1787
1788         len = recvmsg(fd, &mhdr, 0);
1789         if (len < 0) {
1790                 cb(NULL, 0, data->user_data);
1791                 return -errno;
1792         }
1793
1794         hdr = (struct nd_router_solicit *)buf;
1795         DBG("code %d len %zd hdr %zd", hdr->nd_rs_code, len,
1796                                 sizeof(struct nd_router_solicit));
1797         if (hdr->nd_rs_code != 0)
1798                 return 0;
1799
1800         cb(hdr, len, data->user_data);
1801         return len;
1802 }
1803
1804 static gboolean icmpv6_rs_event(GIOChannel *chan, GIOCondition cond,
1805                                                                 gpointer data)
1806 {
1807         int fd, ret;
1808
1809         DBG("");
1810
1811         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1812                 return FALSE;
1813
1814         fd = g_io_channel_unix_get_fd(chan);
1815         ret = icmpv6_rs_recv(fd, data);
1816         if (ret == 0)
1817                 return TRUE;
1818
1819         return FALSE;
1820 }
1821
1822 int __connman_inet_ipv6_start_recv_rs(int index,
1823                                         __connman_inet_recv_rs_cb_t callback,
1824                                         void *user_data,
1825                                         void **context)
1826 {
1827         struct xs_cb_data *data;
1828         struct icmp6_filter filter;
1829         char addr_str[INET6_ADDRSTRLEN];
1830         int sk, err;
1831
1832         data = g_try_malloc0(sizeof(struct xs_cb_data));
1833         if (!data)
1834                 return -ENOMEM;
1835
1836         data->callback = callback;
1837         data->user_data = user_data;
1838
1839         sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1840         if (sk < 0) {
1841                 g_free(data);
1842                 return -errno;
1843         }
1844
1845         DBG("sock %d", sk);
1846
1847         ICMP6_FILTER_SETBLOCKALL(&filter);
1848         ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter);
1849
1850         setsockopt(sk, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
1851                                                 sizeof(struct icmp6_filter));
1852
1853         err = if_mc_group(sk, index, &in6addr_all_routers_mc, IPV6_JOIN_GROUP);
1854         if (err < 0)
1855                 DBG("Cannot join mc %s %d/%s", inet_ntop(AF_INET6,
1856                         &in6addr_all_routers_mc, addr_str, INET6_ADDRSTRLEN),
1857                         err, strerror(-err));
1858
1859         data->channel = g_io_channel_unix_new(sk);
1860         g_io_channel_set_close_on_unref(data->channel, TRUE);
1861
1862         g_io_channel_set_encoding(data->channel, NULL, NULL);
1863         g_io_channel_set_buffered(data->channel, FALSE);
1864
1865         data->watch_id = g_io_add_watch(data->channel,
1866                         G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1867                         icmpv6_rs_event, data);
1868
1869         *context = data;
1870
1871         return 0;
1872 }
1873
1874 static gboolean ns_timeout_cb(gpointer user_data)
1875 {
1876         struct xs_cb_data *data = user_data;
1877
1878         DBG("user data %p", user_data);
1879
1880         if (!data)
1881                 return FALSE;
1882
1883         if (data->callback) {
1884                 __connman_inet_ns_cb_t cb = data->callback;
1885                 cb(NULL, 0, &data->addr.sin6_addr, data->user_data);
1886         }
1887
1888         data->timeout = 0;
1889         xs_cleanup(data);
1890         return FALSE;
1891 }
1892
1893 static int icmpv6_nd_recv(int fd, gpointer user_data)
1894 {
1895         struct msghdr mhdr;
1896         struct iovec iov;
1897         unsigned char chdr[CMSG_BUF_LEN];
1898         unsigned char buf[1540];
1899         struct xs_cb_data *data = user_data;
1900         struct nd_neighbor_advert *hdr;
1901         struct sockaddr_in6 saddr;
1902         ssize_t len;
1903         __connman_inet_ns_cb_t cb = data->callback;
1904
1905         DBG("");
1906
1907         iov.iov_len = sizeof(buf);
1908         iov.iov_base = buf;
1909
1910         mhdr.msg_name = (void *)&saddr;
1911         mhdr.msg_namelen = sizeof(struct sockaddr_in6);
1912         mhdr.msg_flags = 0;
1913         mhdr.msg_iov = &iov;
1914         mhdr.msg_iovlen = 1;
1915         mhdr.msg_control = (void *)chdr;
1916         mhdr.msg_controllen = CMSG_BUF_LEN;
1917
1918         len = recvmsg(fd, &mhdr, 0);
1919         if (len < 0) {
1920                 cb(NULL, 0, &data->addr.sin6_addr, data->user_data);
1921                 xs_cleanup(data);
1922                 return -errno;
1923         }
1924
1925         hdr = (struct nd_neighbor_advert *)buf;
1926         DBG("code %d len %zd hdr %zd", hdr->nd_na_code, len,
1927                                 sizeof(struct nd_neighbor_advert));
1928         if (hdr->nd_na_code != 0)
1929                 return 0;
1930
1931         /*
1932          * We can receive any neighbor advertisement so we need to check if the
1933          * packet was meant for us and ignore the packet otherwise.
1934          */
1935         if (memcmp(&data->addr.sin6_addr, &hdr->nd_na_target,
1936                         sizeof(struct in6_addr)))
1937                 return 0;
1938
1939         cb(hdr, len, &data->addr.sin6_addr, data->user_data);
1940         xs_cleanup(data);
1941
1942         return len;
1943 }
1944
1945 static gboolean icmpv6_nd_event(GIOChannel *chan, GIOCondition cond,
1946                                                                 gpointer data)
1947 {
1948         int fd, ret;
1949
1950         DBG("");
1951
1952         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1953                 return FALSE;
1954
1955         fd = g_io_channel_unix_get_fd(chan);
1956         ret = icmpv6_nd_recv(fd, data);
1957         if (ret == 0)
1958                 return TRUE;
1959
1960         return FALSE;
1961 }
1962
1963 int __connman_inet_ipv6_do_dad(int index, int timeout_ms,
1964                                 struct in6_addr *addr,
1965                                 __connman_inet_ns_cb_t callback,
1966                                 void *user_data)
1967 {
1968         struct xs_cb_data *data;
1969         struct icmp6_filter filter;
1970         struct in6_addr solicit;
1971         int sk, err, val = 1;
1972
1973         if (timeout_ms <= 0)
1974                 return -EINVAL;
1975
1976         data = g_try_malloc0(sizeof(struct xs_cb_data));
1977         if (!data)
1978                 return -ENOMEM;
1979
1980         data->callback = callback;
1981         data->user_data = user_data;
1982         data->timeout = g_timeout_add_full(G_PRIORITY_DEFAULT,
1983                                         (guint)timeout_ms,
1984                                         ns_timeout_cb,
1985                                         data,
1986                                         NULL);
1987         memcpy(&data->addr.sin6_addr, addr, sizeof(struct in6_addr));
1988
1989         sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1990         if (sk < 0)
1991                 return -errno;
1992
1993         DBG("sock %d", sk);
1994
1995         ICMP6_FILTER_SETBLOCKALL(&filter);
1996         ICMP6_FILTER_SETPASS(ND_NEIGHBOR_ADVERT, &filter);
1997
1998         setsockopt(sk, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
1999                                                 sizeof(struct icmp6_filter));
2000
2001         if (setsockopt(sk, IPPROTO_IPV6, IPV6_RECVPKTINFO,
2002                                                 &val, sizeof(val)) < 0) {
2003                 err = -errno;
2004                 DBG("Cannot set IPV6_RECVPKTINFO %d/%s", err,
2005                                                         strerror(-err));
2006                 close(sk);
2007                 return err;
2008         }
2009
2010         if (setsockopt(sk, IPPROTO_IPV6, IPV6_RECVHOPLIMIT,
2011                                                 &val, sizeof(val)) < 0) {
2012                 err = -errno;
2013                 DBG("Cannot set IPV6_RECVHOPLIMIT %d/%s", err,
2014                                                         strerror(-err));
2015                 close(sk);
2016                 return err;
2017         }
2018
2019         val = 0;
2020         setsockopt(sk, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &val, sizeof(val));
2021
2022         ipv6_addr_solict_mult(addr, &solicit);
2023         if_mc_group(sk, index, &in6addr_all_nodes_mc, IPV6_JOIN_GROUP);
2024         if_mc_group(sk, index, &solicit, IPV6_JOIN_GROUP);
2025
2026         data->channel = g_io_channel_unix_new(sk);
2027         g_io_channel_set_close_on_unref(data->channel, TRUE);
2028
2029         g_io_channel_set_encoding(data->channel, NULL, NULL);
2030         g_io_channel_set_buffered(data->channel, FALSE);
2031
2032         data->watch_id = g_io_add_watch(data->channel,
2033                         G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
2034                         icmpv6_nd_event, data);
2035
2036         err = ndisc_send_unspec(ND_NEIGHBOR_SOLICIT, index, &solicit, NULL,
2037                         (unsigned char *)addr, 0, 0);
2038         if (err < 0) {
2039                 DBG("Cannot send NS %d/%s", err, strerror(-err));
2040                 xs_cleanup(data);
2041         }
2042
2043         return err;
2044 }
2045
2046 GSList *__connman_inet_ipv6_get_prefixes(struct nd_router_advert *hdr,
2047                                         unsigned int length)
2048 {
2049         GSList *prefixes = NULL;
2050         uint8_t *pos;
2051         int len;
2052
2053         if (length <= sizeof(struct nd_router_advert))
2054                 return NULL;
2055
2056         len = length - sizeof(struct nd_router_advert);
2057         pos = (uint8_t *)hdr + sizeof(struct nd_router_advert);
2058
2059         while (len > 0) {
2060                 struct nd_opt_prefix_info *pinfo;
2061                 char prefix_str[INET6_ADDRSTRLEN+1], *str;
2062                 const char *prefix;
2063                 int optlen;
2064
2065                 if (len < 2)
2066                         break;
2067
2068                 optlen = pos[1] << 3;
2069                 if (optlen == 0 || optlen > len)
2070                         break;
2071
2072                 switch (pos[0]) {
2073                 case ND_OPT_PREFIX_INFORMATION:
2074                         pinfo = (struct nd_opt_prefix_info *)pos;
2075                         prefix = inet_ntop(AF_INET6, &pinfo->nd_opt_pi_prefix,
2076                                         prefix_str, INET6_ADDRSTRLEN);
2077                         if (!prefix)
2078                                 break;
2079
2080                         str = g_strdup_printf("%s/%d", prefix,
2081                                                 pinfo->nd_opt_pi_prefix_len);
2082                         prefixes = g_slist_prepend(prefixes, str);
2083
2084                         DBG("prefix %s", str);
2085
2086                         break;
2087                 }
2088
2089                 len -= optlen;
2090                 pos += optlen;
2091         }
2092
2093         return prefixes;
2094 }
2095
2096 static int get_dest_addr(int family, int index, char *buf, int len)
2097 {
2098         struct ifreq ifr;
2099         void *addr;
2100         int sk;
2101
2102         sk = socket(family, SOCK_DGRAM | SOCK_CLOEXEC, 0);
2103         if (sk < 0)
2104                 return -errno;
2105
2106         memset(&ifr, 0, sizeof(ifr));
2107         ifr.ifr_ifindex = index;
2108
2109         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
2110                 DBG("SIOCGIFNAME (%d/%s)", errno, strerror(errno));
2111                 close(sk);
2112                 return -errno;
2113         }
2114
2115         if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
2116                 DBG("SIOCGIFFLAGS (%d/%s)", errno, strerror(errno));
2117                 close(sk);
2118                 return -errno;
2119         }
2120
2121         if ((ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
2122                 close(sk);
2123                 errno = EINVAL;
2124                 return -errno;
2125         }
2126
2127         DBG("index %d %s", index, ifr.ifr_name);
2128
2129         if (ioctl(sk, SIOCGIFDSTADDR, &ifr) < 0) {
2130                 connman_error("Get destination address failed (%s)",
2131                                                         strerror(errno));
2132                 close(sk);
2133                 return -errno;
2134         }
2135
2136         close(sk);
2137
2138         switch (family) {
2139         case AF_INET:
2140                 addr = &((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_addr;
2141                 break;
2142         case AF_INET6:
2143                 addr = &((struct sockaddr_in6 *)&ifr.ifr_dstaddr)->sin6_addr;
2144                 break;
2145         default:
2146                 errno = EINVAL;
2147                 return -errno;
2148         }
2149
2150         if (!inet_ntop(family, addr, buf, len)) {
2151                 DBG("error %d/%s", errno, strerror(errno));
2152                 return -errno;
2153         }
2154
2155         return 0;
2156 }
2157
2158 int connman_inet_get_dest_addr(int index, char **dest)
2159 {
2160         char addr[INET_ADDRSTRLEN];
2161         int ret;
2162
2163         ret = get_dest_addr(PF_INET, index, addr, INET_ADDRSTRLEN);
2164         if (ret < 0)
2165                 return ret;
2166
2167         *dest = g_strdup(addr);
2168
2169         DBG("destination %s", *dest);
2170
2171         return 0;
2172 }
2173
2174 int connman_inet_ipv6_get_dest_addr(int index, char **dest)
2175 {
2176         char addr[INET6_ADDRSTRLEN];
2177         int ret;
2178
2179         ret = get_dest_addr(PF_INET6, index, addr, INET6_ADDRSTRLEN);
2180         if (ret < 0)
2181                 return ret;
2182
2183         *dest = g_strdup(addr);
2184
2185         DBG("destination %s", *dest);
2186
2187         return 0;
2188 }
2189
2190 int __connman_inet_rtnl_open(struct __connman_inet_rtnl_handle *rth)
2191 {
2192         int sndbuf = 1024;
2193         int rcvbuf = 1024 * 4;
2194
2195         rth->fd = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE);
2196         if (rth->fd < 0) {
2197                 connman_error("Can not open netlink socket: %s",
2198                                                 strerror(errno));
2199                 return -errno;
2200         }
2201
2202         if (setsockopt(rth->fd, SOL_SOCKET, SO_SNDBUF, &sndbuf,
2203                         sizeof(sndbuf)) < 0) {
2204                 connman_error("SO_SNDBUF: %s", strerror(errno));
2205                 return -errno;
2206         }
2207
2208         if (setsockopt(rth->fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf,
2209                         sizeof(rcvbuf)) < 0) {
2210                 connman_error("SO_RCVBUF: %s", strerror(errno));
2211                 return -errno;
2212         }
2213
2214         memset(&rth->local, 0, sizeof(rth->local));
2215         rth->local.nl_family = AF_NETLINK;
2216         rth->local.nl_groups = 0;
2217
2218         if (bind(rth->fd, (struct sockaddr *)&rth->local,
2219                                                 sizeof(rth->local)) < 0) {
2220                 connman_error("Can not bind netlink socket: %s",
2221                                                         strerror(errno));
2222                 return -errno;
2223         }
2224
2225         rth->seq = time(NULL);
2226
2227         DBG("fd %d", rth->fd);
2228
2229         return 0;
2230 }
2231
2232 struct inet_rtnl_cb_data {
2233         GIOChannel *channel;
2234         __connman_inet_rtnl_cb_t callback;
2235         guint rtnl_timeout;
2236         guint watch_id;
2237         struct __connman_inet_rtnl_handle *rtnl;
2238         void *user_data;
2239 };
2240
2241 static void inet_rtnl_cleanup(struct inet_rtnl_cb_data *data)
2242 {
2243         struct __connman_inet_rtnl_handle *rth = data->rtnl;
2244
2245         if (data->channel) {
2246                 g_io_channel_shutdown(data->channel, TRUE, NULL);
2247                 g_io_channel_unref(data->channel);
2248                 data->channel = NULL;
2249         }
2250
2251         DBG("data %p", data);
2252
2253         if (data->rtnl_timeout > 0)
2254                 g_source_remove(data->rtnl_timeout);
2255
2256         if (data->watch_id > 0)
2257                 g_source_remove(data->watch_id);
2258
2259         if (rth) {
2260                 __connman_inet_rtnl_close(rth);
2261                 g_free(rth);
2262         }
2263
2264         g_free(data);
2265 }
2266
2267 static gboolean inet_rtnl_timeout_cb(gpointer user_data)
2268 {
2269         struct inet_rtnl_cb_data *data = user_data;
2270
2271         DBG("user data %p", user_data);
2272
2273         if (!data)
2274                 return FALSE;
2275
2276         if (data->callback)
2277                 data->callback(NULL, data->user_data);
2278
2279         data->rtnl_timeout = 0;
2280         inet_rtnl_cleanup(data);
2281         return FALSE;
2282 }
2283
2284 static int inet_rtnl_recv(GIOChannel *chan, gpointer user_data)
2285 {
2286         struct inet_rtnl_cb_data *rtnl_data = user_data;
2287         struct __connman_inet_rtnl_handle *rth = rtnl_data->rtnl;
2288         struct nlmsghdr *h = NULL;
2289         struct sockaddr_nl nladdr;
2290         socklen_t addr_len = sizeof(nladdr);
2291         unsigned char buf[4096];
2292         void *ptr = buf;
2293         gsize len;
2294         int status, fd;
2295
2296         memset(buf, 0, sizeof(buf));
2297         memset(&nladdr, 0, sizeof(nladdr));
2298
2299         fd = g_io_channel_unix_get_fd(chan);
2300
2301         status = recvfrom(fd, buf, sizeof(buf), 0,
2302                        (struct sockaddr *) &nladdr, &addr_len);
2303         if (status < 0) {
2304                 if (errno == EINTR || errno == EAGAIN)
2305                         return 0;
2306
2307                 return -1;
2308         }
2309
2310         if (status == 0)
2311                 return -1;
2312
2313         if (nladdr.nl_pid != 0) { /* not sent by kernel, ignore */
2314                 DBG("Received msg from %u, ignoring it", nladdr.nl_pid);
2315                 return 0;
2316         }
2317
2318         len = status;
2319
2320         while (len > 0) {
2321                 struct nlmsgerr *err;
2322
2323                 h = ptr;
2324
2325                 if (!NLMSG_OK(h, len))
2326                         return -1;
2327
2328                 if (h->nlmsg_seq != rth->seq) {
2329                         /* Skip this msg */
2330                         DBG("skip %d/%d len %d", rth->seq,
2331                                 h->nlmsg_seq, h->nlmsg_len);
2332
2333                         len -= h->nlmsg_len;
2334                         ptr += h->nlmsg_len;
2335                         continue;
2336                 }
2337
2338                 switch (h->nlmsg_type) {
2339                 case NLMSG_NOOP:
2340                 case NLMSG_OVERRUN:
2341                         return -1;
2342
2343                 case NLMSG_ERROR:
2344                         err = (struct nlmsgerr *)NLMSG_DATA(h);
2345                         connman_error("RTNETLINK answers %s (%d)",
2346                                 strerror(-err->error), -err->error);
2347                         return err->error;
2348                 }
2349
2350                 break;
2351         }
2352
2353         if (h->nlmsg_seq == rth->seq) {
2354                 DBG("received %d seq %d", h->nlmsg_len, h->nlmsg_seq);
2355
2356                 rtnl_data->callback(h, rtnl_data->user_data);
2357
2358                 inet_rtnl_cleanup(rtnl_data);
2359         }
2360
2361         return 0;
2362 }
2363
2364 static gboolean inet_rtnl_event(GIOChannel *chan, GIOCondition cond,
2365                                                         gpointer user_data)
2366 {
2367         int ret;
2368
2369         DBG("");
2370
2371         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
2372                 return FALSE;
2373
2374         ret = inet_rtnl_recv(chan, user_data);
2375         if (ret != 0)
2376                 return TRUE;
2377
2378         return FALSE;
2379 }
2380
2381 int __connman_inet_rtnl_talk(struct __connman_inet_rtnl_handle *rtnl,
2382                         struct nlmsghdr *n, int timeout,
2383                         __connman_inet_rtnl_cb_t callback, void *user_data)
2384 {
2385         struct sockaddr_nl nladdr;
2386         struct inet_rtnl_cb_data *data;
2387         unsigned seq;
2388         int err;
2389
2390         memset(&nladdr, 0, sizeof(nladdr));
2391         nladdr.nl_family = AF_NETLINK;
2392
2393         n->nlmsg_seq = seq = ++rtnl->seq;
2394
2395         if (callback) {
2396                 data = g_try_malloc0(sizeof(struct inet_rtnl_cb_data));
2397                 if (!data)
2398                         return -ENOMEM;
2399
2400                 data->callback = callback;
2401                 data->user_data = user_data;
2402                 data->rtnl = rtnl;
2403                 data->rtnl_timeout = g_timeout_add_seconds(timeout,
2404                                                 inet_rtnl_timeout_cb, data);
2405
2406                 data->channel = g_io_channel_unix_new(rtnl->fd);
2407                 g_io_channel_set_close_on_unref(data->channel, TRUE);
2408
2409                 g_io_channel_set_encoding(data->channel, NULL, NULL);
2410                 g_io_channel_set_buffered(data->channel, FALSE);
2411
2412                 data->watch_id = g_io_add_watch(data->channel,
2413                                 G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
2414                                                 inet_rtnl_event, data);
2415         } else
2416                 n->nlmsg_flags |= NLM_F_ACK;
2417
2418         err = sendto(rtnl->fd, &rtnl->req.n, rtnl->req.n.nlmsg_len, 0,
2419                 (struct sockaddr *) &nladdr, sizeof(nladdr));
2420         DBG("handle %p len %d", rtnl, rtnl->req.n.nlmsg_len);
2421         if (err < 0) {
2422                 connman_error("Can not talk to rtnetlink err %d %s",
2423                         -errno, strerror(errno));
2424                 return -errno;
2425         }
2426
2427         if ((unsigned int)err != rtnl->req.n.nlmsg_len) {
2428                 connman_error("Sent %d bytes, msg truncated", err);
2429                 return -EINVAL;
2430         }
2431
2432         return 0;
2433 }
2434
2435 void __connman_inet_rtnl_close(struct __connman_inet_rtnl_handle *rth)
2436 {
2437         DBG("handle %p", rth);
2438
2439         if (rth->fd >= 0) {
2440                 close(rth->fd);
2441                 rth->fd = -1;
2442         }
2443 }
2444
2445 int __connman_inet_rtnl_addattr32(struct nlmsghdr *n, size_t maxlen, int type,
2446                                 __u32 data)
2447 {
2448         int len = RTA_LENGTH(4);
2449         struct rtattr *rta;
2450
2451         if (NLMSG_ALIGN(n->nlmsg_len) + len > maxlen) {
2452                 DBG("Error! max allowed bound %zd exceeded", maxlen);
2453                 return -1;
2454         }
2455         rta = NLMSG_TAIL(n);
2456         rta->rta_type = type;
2457         rta->rta_len = len;
2458         memcpy(RTA_DATA(rta), &data, 4);
2459         n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
2460
2461         return 0;
2462 }
2463
2464 static int parse_rtattr(struct rtattr *tb[], int max,
2465                         struct rtattr *rta, int len)
2466 {
2467         memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
2468         while (RTA_OK(rta, len)) {
2469                 if ((rta->rta_type <= max) && (!tb[rta->rta_type]))
2470                         tb[rta->rta_type] = rta;
2471                 rta = RTA_NEXT(rta, len);
2472         }
2473         if (len)
2474                 connman_error("Deficit %d, rta_len=%d", len, rta->rta_len);
2475
2476         return 0;
2477 }
2478
2479 struct get_route_cb_data {
2480         connman_inet_addr_cb_t callback;
2481         void *user_data;
2482 };
2483
2484 static void get_route_cb(struct nlmsghdr *answer, void *user_data)
2485 {
2486         struct get_route_cb_data *data = user_data;
2487         struct rtattr *tb[RTA_MAX+1];
2488         struct rtmsg *r = NLMSG_DATA(answer);
2489         int len, index = -1;
2490         char abuf[256];
2491         const char *addr = NULL;
2492
2493         DBG("answer %p data %p", answer, user_data);
2494
2495         if (!answer)
2496                 goto out;
2497
2498         len = answer->nlmsg_len;
2499
2500         if (answer->nlmsg_type != RTM_NEWROUTE &&
2501                                 answer->nlmsg_type != RTM_DELROUTE) {
2502                 connman_error("Not a route: %08x %08x %08x",
2503                         answer->nlmsg_len, answer->nlmsg_type,
2504                         answer->nlmsg_flags);
2505                 goto out;
2506         }
2507
2508         len -= NLMSG_LENGTH(sizeof(*r));
2509         if (len < 0) {
2510                 connman_error("BUG: wrong nlmsg len %d", len);
2511                 goto out;
2512         }
2513
2514         parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
2515
2516         if (tb[RTA_OIF])
2517                 index = *(int *)RTA_DATA(tb[RTA_OIF]);
2518
2519         if (tb[RTA_GATEWAY])
2520                 addr = inet_ntop(r->rtm_family,
2521                                 RTA_DATA(tb[RTA_GATEWAY]),
2522                                 abuf, sizeof(abuf));
2523
2524         DBG("addr %s index %d user %p", addr, index, data->user_data);
2525
2526 out:
2527         if (data && data->callback)
2528                 data->callback(addr, index, data->user_data);
2529
2530         g_free(data);
2531
2532         return;
2533 }
2534
2535 /*
2536  * Return the interface index that contains route to host.
2537  */
2538 int __connman_inet_get_route(const char *dest_address,
2539                         connman_inet_addr_cb_t callback, void *user_data)
2540 {
2541         struct get_route_cb_data *data;
2542         struct addrinfo hints, *rp;
2543         struct __connman_inet_rtnl_handle *rth;
2544         int err;
2545
2546         DBG("dest %s", dest_address);
2547
2548         if (!dest_address)
2549                 return -EINVAL;
2550
2551         memset(&hints, 0, sizeof(hints));
2552         hints.ai_family = AF_UNSPEC;
2553         hints.ai_flags = AI_PASSIVE | AI_NUMERICSERV | AI_NUMERICHOST;
2554
2555         err = getaddrinfo(dest_address, NULL, &hints, &rp);
2556         if (err)
2557                 return -EINVAL;
2558
2559         rth = g_try_malloc0(sizeof(struct __connman_inet_rtnl_handle));
2560         if (!rth) {
2561                 freeaddrinfo(rp);
2562                 return -ENOMEM;
2563         }
2564
2565         rth->req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
2566         rth->req.n.nlmsg_flags = NLM_F_REQUEST;
2567         rth->req.n.nlmsg_type = RTM_GETROUTE;
2568         rth->req.u.r.rt.rtm_family = rp->ai_family;
2569         rth->req.u.r.rt.rtm_table = 0;
2570         rth->req.u.r.rt.rtm_protocol = 0;
2571         rth->req.u.r.rt.rtm_scope = 0;
2572         rth->req.u.r.rt.rtm_type = 0;
2573         rth->req.u.r.rt.rtm_src_len = 0;
2574         rth->req.u.r.rt.rtm_dst_len = rp->ai_addrlen << 3;
2575         rth->req.u.r.rt.rtm_tos = 0;
2576
2577         __connman_inet_rtnl_addattr_l(&rth->req.n, sizeof(rth->req), RTA_DST,
2578                                 &rp->ai_addr, rp->ai_addrlen);
2579
2580         freeaddrinfo(rp);
2581
2582         err = __connman_inet_rtnl_open(rth);
2583         if (err < 0)
2584                 goto fail;
2585
2586         data = g_try_malloc(sizeof(struct get_route_cb_data));
2587         if (!data) {
2588                 err = -ENOMEM;
2589                 goto done;
2590         }
2591
2592         data->callback = callback;
2593         data->user_data = user_data;
2594
2595 #define GET_ROUTE_TIMEOUT 2
2596         err = __connman_inet_rtnl_talk(rth, &rth->req.n, GET_ROUTE_TIMEOUT,
2597                                 get_route_cb, data);
2598         if (err < 0) {
2599                 g_free(data);
2600                 goto done;
2601         }
2602
2603         return 0;
2604
2605 done:
2606         __connman_inet_rtnl_close(rth);
2607
2608 fail:
2609         g_free(rth);
2610         return err;
2611 }
2612
2613 int connman_inet_check_ipaddress(const char *host)
2614 {
2615         struct addrinfo hints;
2616         struct addrinfo *addr;
2617         int result;
2618
2619         memset(&hints, 0, sizeof(struct addrinfo));
2620         hints.ai_flags = AI_NUMERICHOST;
2621         addr = NULL;
2622
2623         result = getaddrinfo(host, NULL, &hints, &addr);
2624         if (result == 0)
2625                 result = addr->ai_family;
2626         freeaddrinfo(addr);
2627
2628         return result;
2629 }
2630
2631 /* Check routine modified from ics-dhcp 4.2.3-P2 */
2632 bool connman_inet_check_hostname(const char *ptr, size_t len)
2633 {
2634         const char *p;
2635
2636         /*
2637          * Not empty or complete length not over 255 characters.
2638          */
2639         if ((len == 0) || (len > 256))
2640                 return false;
2641
2642         /*
2643          * Consists of [[:alnum:]-]+ labels separated by [.]
2644          * a [_] is against RFC but seems to be "widely used"
2645          */
2646         for (p = ptr; (*p != 0) && (len-- > 0); p++) {
2647
2648                 if ((*p == '-') || (*p == '_')) {
2649                         /*
2650                          * Not allowed at begin or end of a label.
2651                          */
2652                         if (((p - ptr) == 0) || (len == 0) || (p[1] == '.'))
2653                                 return false;
2654
2655                 } else if (*p == '.') {
2656                         /*
2657                          * Each label has to be 1-63 characters;
2658                          * we allow [.] at the end ('foo.bar.')
2659                          */
2660                         size_t d = p - ptr;
2661
2662                         if ((d <= 0) || (d >= 64))
2663                                 return false;
2664
2665                         ptr = p + 1; /* Jump to the next label */
2666
2667                 } else if (isalnum((unsigned char)*p) == 0) {
2668                         /*
2669                          * Also numbers at the begin are fine
2670                          */
2671                         return false;
2672                 }
2673         }
2674
2675         return true;
2676 }
2677
2678 char **__connman_inet_get_running_interfaces(void)
2679 {
2680         char **result;
2681         struct ifconf ifc;
2682         struct ifreq *ifr = NULL;
2683         int sk, i, numif, count = 0;
2684
2685         memset(&ifc, 0, sizeof(ifc));
2686
2687         sk = socket(AF_INET, SOCK_DGRAM, 0);
2688         if (sk < 0)
2689                 return NULL;
2690
2691         if (ioctl(sk, SIOCGIFCONF, &ifc) < 0)
2692                 goto error;
2693
2694         /*
2695          * Allocate some extra bytes just in case there will
2696          * be new interfaces added between two SIOCGIFCONF
2697          * calls.
2698          */
2699         ifr = g_try_malloc0(ifc.ifc_len * 2);
2700         if (!ifr)
2701                 goto error;
2702
2703         ifc.ifc_req = ifr;
2704
2705         if (ioctl(sk, SIOCGIFCONF, &ifc) < 0)
2706                 goto error;
2707
2708         numif = ifc.ifc_len / sizeof(struct ifreq);
2709
2710         result = g_try_malloc0((numif + 1) * sizeof(char *));
2711         if (!result)
2712                 goto error;
2713
2714         close(sk);
2715
2716         for (i = 0; i < numif; i++) {
2717                 struct ifreq *r = &ifr[i];
2718                 struct in6_addr *addr6;
2719                 in_addr_t addr4;
2720
2721                 /*
2722                  * Note that we do not return loopback interfaces here as they
2723                  * are not needed for our purposes.
2724                  */
2725                 switch (r->ifr_addr.sa_family) {
2726                 case AF_INET:
2727                         addr4 = ntohl(((struct sockaddr_in *)
2728                                                 &r->ifr_addr)->sin_addr.s_addr);
2729                         if (((addr4 & 0xff000000) >> 24) == 127)
2730                                 continue;
2731                         break;
2732                 case AF_INET6:
2733                         addr6 = &((struct sockaddr_in6 *)
2734                                                 &r->ifr_addr)->sin6_addr;
2735                         if (IN6_IS_ADDR_LINKLOCAL(addr6))
2736                                 continue;
2737                         break;
2738                 }
2739
2740                 result[count++] = g_strdup(r->ifr_name);
2741         }
2742
2743         g_free(ifr);
2744
2745         if (count < numif)
2746         {
2747                 char **prev_result = result;
2748                 result = g_try_realloc(result, (count + 1) * sizeof(char *));
2749                 if (!result) {
2750                         g_free(prev_result);
2751                         goto error;
2752                 }
2753         }
2754
2755         return result;
2756
2757 error:
2758         close(sk);
2759         g_free(ifr);
2760         return NULL;
2761 }
2762
2763 bool connman_inet_is_ipv6_supported()
2764 {
2765         int sk;
2766
2767         sk = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
2768         if (sk < 0)
2769                 return false;
2770
2771         close(sk);
2772         return true;
2773 }
2774
2775 int __connman_inet_get_interface_address(int index, int family, void *address)
2776 {
2777         struct ifaddrs *ifaddr, *ifa;
2778         int err = -ENOENT;
2779         char name[IF_NAMESIZE];
2780
2781         if (!if_indextoname(index, name))
2782                 return -EINVAL;
2783
2784         DBG("index %d interface %s", index, name);
2785
2786         if (getifaddrs(&ifaddr) < 0) {
2787                 err = -errno;
2788                 DBG("Cannot get addresses err %d/%s", err, strerror(-err));
2789                 return err;
2790         }
2791
2792         for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
2793                 if (!ifa->ifa_addr)
2794                         continue;
2795
2796                 if (strncmp(ifa->ifa_name, name, IF_NAMESIZE) == 0 &&
2797                                         ifa->ifa_addr->sa_family == family) {
2798                         if (family == AF_INET) {
2799                                 struct sockaddr_in *in4 = (struct sockaddr_in *)
2800                                         ifa->ifa_addr;
2801                                 if (in4->sin_addr.s_addr == INADDR_ANY)
2802                                         continue;
2803                                 memcpy(address, &in4->sin_addr,
2804                                                         sizeof(struct in_addr));
2805                         } else if (family == AF_INET6) {
2806                                 struct sockaddr_in6 *in6 =
2807                                         (struct sockaddr_in6 *)ifa->ifa_addr;
2808                                 if (memcmp(&in6->sin6_addr, &in6addr_any,
2809                                                 sizeof(struct in6_addr)) == 0)
2810                                         continue;
2811                                 memcpy(address, &in6->sin6_addr,
2812                                                 sizeof(struct in6_addr));
2813
2814                         } else {
2815                                 err = -EINVAL;
2816                                 goto out;
2817                         }
2818
2819                         err = 0;
2820                         break;
2821                 }
2822         }
2823
2824 out:
2825         freeifaddrs(ifaddr);
2826         return err;
2827 }
2828
2829 static int iprule_modify(int cmd, int family, uint32_t table_id,
2830                         uint32_t fwmark)
2831 {
2832         struct __connman_inet_rtnl_handle rth;
2833         int ret;
2834
2835         memset(&rth, 0, sizeof(rth));
2836
2837         rth.req.n.nlmsg_type = cmd;
2838         rth.req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
2839         rth.req.n.nlmsg_flags = NLM_F_REQUEST;
2840         rth.req.u.r.rt.rtm_family = family;
2841         rth.req.u.r.rt.rtm_protocol = RTPROT_BOOT;
2842         rth.req.u.r.rt.rtm_scope = RT_SCOPE_UNIVERSE;
2843         rth.req.u.r.rt.rtm_table = table_id;
2844         rth.req.u.r.rt.rtm_type = RTN_UNSPEC;
2845         rth.req.u.r.rt.rtm_flags = 0;
2846
2847         if (cmd == RTM_NEWRULE) {
2848                 rth.req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
2849                 rth.req.u.r.rt.rtm_type = RTN_UNICAST;
2850         }
2851
2852         __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2853                                                         FRA_FWMARK, fwmark);
2854
2855         if (table_id < 256) {
2856                 rth.req.u.r.rt.rtm_table = table_id;
2857         } else {
2858                 rth.req.u.r.rt.rtm_table = RT_TABLE_UNSPEC;
2859                 __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2860                                                 FRA_TABLE, table_id);
2861         }
2862
2863         if (rth.req.u.r.rt.rtm_family == AF_UNSPEC)
2864                 rth.req.u.r.rt.rtm_family = AF_INET;
2865
2866         ret = __connman_inet_rtnl_open(&rth);
2867         if (ret < 0)
2868                 goto done;
2869
2870         ret = __connman_inet_rtnl_send(&rth, &rth.req.n);
2871
2872 done:
2873         __connman_inet_rtnl_close(&rth);
2874
2875         return ret;
2876 }
2877
2878 int __connman_inet_add_fwmark_rule(uint32_t table_id, int family, uint32_t fwmark)
2879 {
2880         /* ip rule add fwmark 9876 table 1234 */
2881
2882         return iprule_modify(RTM_NEWRULE, family, table_id, fwmark);
2883 }
2884
2885 int __connman_inet_del_fwmark_rule(uint32_t table_id, int family, uint32_t fwmark)
2886 {
2887         return iprule_modify(RTM_DELRULE, family, table_id, fwmark);
2888 }
2889
2890 static int iproute_default_modify(int cmd, uint32_t table_id, int ifindex,
2891                         const char *gateway)
2892 {
2893         struct __connman_inet_rtnl_handle rth;
2894         unsigned char buf[sizeof(struct in6_addr)];
2895         int ret, len;
2896         int family = connman_inet_check_ipaddress(gateway);
2897
2898         switch (family) {
2899         case AF_INET:
2900                 len = 4;
2901                 break;
2902         case AF_INET6:
2903                 len = 16;
2904                 break;
2905         default:
2906                 return -EINVAL;
2907         }
2908
2909         ret = inet_pton(family, gateway, buf);
2910         if (ret <= 0)
2911                 return -EINVAL;
2912
2913         memset(&rth, 0, sizeof(rth));
2914
2915         rth.req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
2916         rth.req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
2917         rth.req.n.nlmsg_type = cmd;
2918         rth.req.u.r.rt.rtm_family = family;
2919         rth.req.u.r.rt.rtm_table = RT_TABLE_MAIN;
2920         rth.req.u.r.rt.rtm_scope = RT_SCOPE_NOWHERE;
2921         rth.req.u.r.rt.rtm_protocol = RTPROT_BOOT;
2922         rth.req.u.r.rt.rtm_scope = RT_SCOPE_UNIVERSE;
2923         rth.req.u.r.rt.rtm_type = RTN_UNICAST;
2924
2925         __connman_inet_rtnl_addattr_l(&rth.req.n, sizeof(rth.req), RTA_GATEWAY,
2926                                                                 buf, len);
2927         if (table_id < 256) {
2928                 rth.req.u.r.rt.rtm_table = table_id;
2929         } else {
2930                 rth.req.u.r.rt.rtm_table = RT_TABLE_UNSPEC;
2931                 __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2932                                                         RTA_TABLE, table_id);
2933         }
2934
2935         __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2936                                                         RTA_OIF, ifindex);
2937
2938         ret = __connman_inet_rtnl_open(&rth);
2939         if (ret < 0)
2940                 goto done;
2941
2942         ret = __connman_inet_rtnl_send(&rth, &rth.req.n);
2943
2944 done:
2945         __connman_inet_rtnl_close(&rth);
2946
2947         return ret;
2948 }
2949
2950 int __connman_inet_add_default_to_table(uint32_t table_id, int ifindex,
2951                                                 const char *gateway)
2952 {
2953         /* ip route add default via 1.2.3.4 dev wlan0 table 1234 */
2954
2955         return iproute_default_modify(RTM_NEWROUTE, table_id, ifindex, gateway);
2956 }
2957
2958 int __connman_inet_del_default_from_table(uint32_t table_id, int ifindex,
2959                                                 const char *gateway)
2960 {
2961         /* ip route del default via 1.2.3.4 dev wlan0 table 1234 */
2962
2963         return iproute_default_modify(RTM_DELROUTE, table_id, ifindex, gateway);
2964 }
2965
2966 int __connman_inet_get_interface_ll_address(int index, int family,
2967                                                                 void *address)
2968 {
2969         struct ifaddrs *ifaddr, *ifa;
2970         int err = -ENOENT;
2971         char name[IF_NAMESIZE];
2972
2973         if (!if_indextoname(index, name))
2974                 return -EINVAL;
2975
2976         DBG("index %d interface %s", index, name);
2977
2978         if (getifaddrs(&ifaddr) < 0) {
2979                 err = -errno;
2980                 DBG("Cannot get addresses err %d/%s", err, strerror(-err));
2981                 return err;
2982         }
2983
2984         for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
2985                 if (!ifa->ifa_addr)
2986                         continue;
2987
2988                 if (strncmp(ifa->ifa_name, name, IF_NAMESIZE) == 0 &&
2989                                         ifa->ifa_addr->sa_family == family) {
2990                         if (family == AF_INET) {
2991                                 struct sockaddr_in *in4 = (struct sockaddr_in *)
2992                                         ifa->ifa_addr;
2993                                 if (in4->sin_addr.s_addr == INADDR_ANY)
2994                                         continue;
2995                                 if ((in4->sin_addr.s_addr & IN_CLASSB_NET) !=
2996                                                 ((in_addr_t) 0xa9fe0000))
2997                                         continue;
2998                                 memcpy(address, &in4->sin_addr,
2999                                                         sizeof(struct in_addr));
3000                         } else if (family == AF_INET6) {
3001                                 struct sockaddr_in6 *in6 =
3002                                         (struct sockaddr_in6 *)ifa->ifa_addr;
3003                                 if (memcmp(&in6->sin6_addr, &in6addr_any,
3004                                                 sizeof(struct in6_addr)) == 0)
3005                                         continue;
3006                                 if (!IN6_IS_ADDR_LINKLOCAL(&in6->sin6_addr))
3007                                         continue;
3008
3009                                 memcpy(address, &in6->sin6_addr,
3010                                                 sizeof(struct in6_addr));
3011                         } else {
3012                                 err = -EINVAL;
3013                                 goto out;
3014                         }
3015
3016                         err = 0;
3017                         break;
3018                 }
3019         }
3020
3021 out:
3022         freeifaddrs(ifaddr);
3023         return err;
3024 }
3025
3026 int __connman_inet_get_address_netmask(int ifindex,
3027                                         struct sockaddr_in *address,
3028                                         struct sockaddr_in *netmask)
3029 {
3030         int sk, ret = -EINVAL;
3031         struct ifreq ifr;
3032
3033         DBG("index %d", ifindex);
3034
3035         sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
3036         if (sk < 0)
3037                 return -EINVAL;
3038
3039         memset(&ifr, 0, sizeof(ifr));
3040         ifr.ifr_ifindex = ifindex;
3041
3042         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0)
3043                 goto out;
3044
3045         if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0)
3046                 goto out;
3047
3048         memcpy(netmask, (struct sockaddr_in *)&ifr.ifr_netmask,
3049                                                 sizeof(struct sockaddr_in));
3050
3051         if (ioctl(sk, SIOCGIFADDR, &ifr) < 0)
3052                 goto out;
3053
3054         memcpy(address, (struct sockaddr_in *)&ifr.ifr_addr,
3055                                                 sizeof(struct sockaddr_in));
3056         ret = 0;
3057
3058 out:
3059         close(sk);
3060         return ret;
3061 }