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
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.
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.
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
34 #include <sys/ioctl.h>
35 #include <sys/socket.h>
36 #include <linux/sockios.h>
38 #include <arpa/inet.h>
39 #include <net/route.h>
40 #include <net/ethernet.h>
42 #include <net/if_arp.h>
43 #include <netinet/icmp6.h>
45 #include <linux/if_tun.h>
48 #include <linux/fib_rules.h>
51 #include <gdhcp/gdhcp.h>
53 #define NLMSG_TAIL(nmsg) \
54 ((struct rtattr *) (((uint8_t*) (nmsg)) + \
55 NLMSG_ALIGN((nmsg)->nlmsg_len)))
57 int __connman_inet_rtnl_addattr_l(struct nlmsghdr *n, size_t max_length,
58 int type, const void *data, size_t data_length)
63 length = RTA_LENGTH(data_length);
65 if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length) > max_length)
70 rta->rta_len = length;
71 memcpy(RTA_DATA(rta), data, data_length);
72 n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length);
77 int __connman_inet_modify_address(int cmd, int flags,
78 int index, int family,
81 unsigned char prefixlen,
82 const char *broadcast)
84 uint8_t request[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
85 NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
86 RTA_LENGTH(sizeof(struct in6_addr)) +
87 RTA_LENGTH(sizeof(struct in6_addr))];
89 struct nlmsghdr *header;
90 struct sockaddr_nl nl_addr;
91 struct ifaddrmsg *ifaddrmsg;
92 struct in6_addr ipv6_addr;
93 struct in_addr ipv4_addr, ipv4_dest, ipv4_bcast;
96 DBG("cmd %#x flags %#x index %d family %d address %s peer %s "
97 "prefixlen %hhu broadcast %s", cmd, flags, index, family,
98 address, peer, prefixlen, broadcast);
103 if (family != AF_INET && family != AF_INET6)
106 memset(&request, 0, sizeof(request));
108 header = (struct nlmsghdr *)request;
109 header->nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
110 header->nlmsg_type = cmd;
111 header->nlmsg_flags = NLM_F_REQUEST | flags;
112 header->nlmsg_seq = 1;
114 ifaddrmsg = NLMSG_DATA(header);
115 ifaddrmsg->ifa_family = family;
116 ifaddrmsg->ifa_prefixlen = prefixlen;
117 ifaddrmsg->ifa_flags = IFA_F_PERMANENT;
118 ifaddrmsg->ifa_scope = RT_SCOPE_UNIVERSE;
119 ifaddrmsg->ifa_index = index;
121 if (family == AF_INET) {
122 if (inet_pton(AF_INET, address, &ipv4_addr) < 1)
126 inet_pton(AF_INET, broadcast, &ipv4_bcast);
128 ipv4_bcast.s_addr = ipv4_addr.s_addr |
129 htonl(0xfffffffflu >> prefixlen);
132 if (inet_pton(AF_INET, peer, &ipv4_dest) < 1)
135 err = __connman_inet_rtnl_addattr_l(header,
144 err = __connman_inet_rtnl_addattr_l(header,
152 err = __connman_inet_rtnl_addattr_l(header,
160 } else if (family == AF_INET6) {
161 if (inet_pton(AF_INET6, address, &ipv6_addr) < 1)
164 err = __connman_inet_rtnl_addattr_l(header,
173 sk = socket(AF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE);
177 memset(&nl_addr, 0, sizeof(nl_addr));
178 nl_addr.nl_family = AF_NETLINK;
180 if ((err = sendto(sk, request, header->nlmsg_len, 0,
181 (struct sockaddr *) &nl_addr, sizeof(nl_addr))) < 0)
192 bool __connman_inet_is_any_addr(const char *address, int family)
195 struct addrinfo hints;
196 struct addrinfo *result = NULL;
197 struct sockaddr_in6 *in6 = NULL;
198 struct sockaddr_in *in4 = NULL;
200 if (!address || !*address)
203 memset(&hints, 0, sizeof(struct addrinfo));
205 hints.ai_family = family;
207 if (getaddrinfo(address, NULL, &hints, &result))
211 if (result->ai_family == AF_INET6) {
212 in6 = (struct sockaddr_in6*)result->ai_addr;
213 ret = IN6_IS_ADDR_UNSPECIFIED(&in6->sin6_addr);
214 } else if (result->ai_family == AF_INET) {
215 in4 = (struct sockaddr_in*)result->ai_addr;
216 ret = in4->sin_addr.s_addr == INADDR_ANY;
219 freeaddrinfo(result);
226 int connman_inet_ifindex(const char *name)
234 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
238 memset(&ifr, 0, sizeof(ifr));
239 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name) - 1);
241 err = ioctl(sk, SIOCGIFINDEX, &ifr);
248 return ifr.ifr_ifindex;
251 char *connman_inet_ifname(int index)
259 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
263 memset(&ifr, 0, sizeof(ifr));
264 ifr.ifr_ifindex = index;
266 err = ioctl(sk, SIOCGIFNAME, &ifr);
273 return g_strdup(ifr.ifr_name);
276 int connman_inet_ifup(int index)
281 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
285 memset(&ifr, 0, sizeof(ifr));
286 ifr.ifr_ifindex = index;
288 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
293 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
298 if (ifr.ifr_flags & IFF_UP) {
303 ifr.ifr_flags |= (IFF_UP|IFF_DYNAMIC);
305 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0) {
318 int connman_inet_ifdown(int index)
320 struct ifreq ifr, addr_ifr;
321 struct sockaddr_in *addr;
324 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
328 memset(&ifr, 0, sizeof(ifr));
329 ifr.ifr_ifindex = index;
331 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
336 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
341 memset(&addr_ifr, 0, sizeof(addr_ifr));
342 memcpy(&addr_ifr.ifr_name, &ifr.ifr_name, sizeof(ifr.ifr_name) - 1);
343 addr = (struct sockaddr_in *)&addr_ifr.ifr_addr;
344 addr->sin_family = AF_INET;
345 if (ioctl(sk, SIOCSIFADDR, &addr_ifr) < 0)
346 connman_warn("Could not clear IPv4 address index %d", index);
348 if (!(ifr.ifr_flags & IFF_UP)) {
353 ifr.ifr_flags = (ifr.ifr_flags & ~IFF_UP) | IFF_DYNAMIC;
355 if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0)
366 bool connman_inet_is_ifup(int index)
372 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
374 connman_warn("Failed to open socket");
378 memset(&ifr, 0, sizeof(ifr));
379 ifr.ifr_ifindex = index;
381 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
382 connman_warn("Failed to get interface name for interface %d", index);
386 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
387 connman_warn("Failed to get interface flags for index %d", index);
391 if (ifr.ifr_flags & IFF_UP)
401 struct in6_addr ifr6_addr;
402 __u32 ifr6_prefixlen;
403 unsigned int ifr6_ifindex;
406 int connman_inet_set_ipv6_address(int index,
407 struct connman_ipaddress *ipaddress)
410 unsigned char prefix_len;
413 if (!ipaddress->local)
416 prefix_len = ipaddress->prefixlen;
417 address = ipaddress->local;
419 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
421 err = __connman_inet_modify_address(RTM_NEWADDR,
422 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET6,
423 address, NULL, prefix_len, NULL);
425 connman_error("%s: %s", __func__, strerror(-err));
432 int connman_inet_set_address(int index, struct connman_ipaddress *ipaddress)
435 unsigned char prefix_len;
436 const char *address, *broadcast, *peer;
438 if (!ipaddress->local)
441 prefix_len = ipaddress->prefixlen;
442 address = ipaddress->local;
443 broadcast = ipaddress->broadcast;
444 peer = ipaddress->peer;
446 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
448 err = __connman_inet_modify_address(RTM_NEWADDR,
449 NLM_F_REPLACE | NLM_F_ACK, index, AF_INET,
450 address, peer, prefix_len, broadcast);
452 connman_error("%s: %s", __func__, strerror(-err));
459 int connman_inet_clear_ipv6_address(int index, const char *address,
464 DBG("index %d address %s prefix_len %d", index, address, prefix_len);
469 err = __connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET6,
470 address, NULL, prefix_len, NULL);
472 connman_error("%s: %s", __func__, strerror(-err));
479 int connman_inet_clear_address(int index, struct connman_ipaddress *ipaddress)
482 unsigned char prefix_len;
483 const char *address, *broadcast, *peer;
485 prefix_len = ipaddress->prefixlen;
486 address = ipaddress->local;
487 broadcast = ipaddress->broadcast;
488 peer = ipaddress->peer;
490 DBG("index %d address %s prefix_len %d peer %s broadcast %s", index,
491 address, prefix_len, peer, broadcast);
496 err = __connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET,
497 address, peer, prefix_len, broadcast);
499 connman_error("%s: %s", __func__, strerror(-err));
506 int connman_inet_add_host_route(int index, const char *host,
509 return connman_inet_add_network_route(index, host, gateway, NULL);
512 int connman_inet_del_host_route(int index, const char *host)
514 return connman_inet_del_network_route(index, host);
517 int connman_inet_add_network_route(int index, const char *host,
523 struct sockaddr_in addr;
526 DBG("index %d host %s gateway %s netmask %s", index,
527 host, gateway, netmask);
529 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
535 memset(&ifr, 0, sizeof(ifr));
536 ifr.ifr_ifindex = index;
538 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
544 DBG("ifname %s", ifr.ifr_name);
546 memset(&rt, 0, sizeof(rt));
547 rt.rt_flags = RTF_UP;
550 * Set RTF_GATEWAY only when gateway is set and the gateway IP address
551 * is not IPv4 any address (0.0.0.0). If the given gateway IP address is
552 * any address adding of route will fail when RTF_GATEWAY set. Passing
553 * gateway as NULL or INADDR_ANY should have the same effect. Setting
554 * the gateway address later to the struct is not affected by this,
555 * since given IPv4 any address (0.0.0.0) equals the value set with
558 if (gateway && !__connman_inet_is_any_addr(gateway, AF_INET))
559 rt.rt_flags |= RTF_GATEWAY;
561 rt.rt_flags |= RTF_HOST;
563 memset(&addr, 0, sizeof(addr));
564 addr.sin_family = AF_INET;
565 addr.sin_addr.s_addr = inet_addr(host);
566 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
568 memset(&addr, 0, sizeof(addr));
569 addr.sin_family = AF_INET;
571 addr.sin_addr.s_addr = inet_addr(gateway);
573 addr.sin_addr.s_addr = INADDR_ANY;
574 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
576 memset(&addr, 0, sizeof(addr));
577 addr.sin_family = AF_INET;
578 addr.sin_addr.s_addr = INADDR_ANY;
580 addr.sin_addr.s_addr = inet_addr(netmask);
582 addr.sin_addr.s_addr = INADDR_ANY;
583 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
585 rt.rt_dev = ifr.ifr_name;
587 if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
594 connman_error("Adding host route failed (%s)",
600 int connman_inet_del_network_route(int index, const char *host)
604 struct sockaddr_in addr;
607 DBG("index %d host %s", index, host);
609 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
615 memset(&ifr, 0, sizeof(ifr));
616 ifr.ifr_ifindex = index;
618 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
624 DBG("ifname %s", ifr.ifr_name);
626 memset(&rt, 0, sizeof(rt));
627 rt.rt_flags = RTF_UP | RTF_HOST;
629 memset(&addr, 0, sizeof(addr));
630 addr.sin_family = AF_INET;
631 addr.sin_addr.s_addr = inet_addr(host);
632 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
634 rt.rt_dev = ifr.ifr_name;
636 if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
643 connman_error("Deleting host route failed (%s)",
649 int connman_inet_del_ipv6_network_route(int index, const char *host,
650 unsigned char prefix_len)
655 DBG("index %d host %s", index, host);
660 memset(&rt, 0, sizeof(rt));
662 rt.rtmsg_dst_len = prefix_len;
664 if (inet_pton(AF_INET6, host, &rt.rtmsg_dst) < 0) {
669 rt.rtmsg_flags = RTF_UP | RTF_HOST;
672 rt.rtmsg_ifindex = index;
674 sk = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
680 if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
687 connman_error("Del IPv6 host route error (%s)",
693 int connman_inet_del_ipv6_host_route(int index, const char *host)
695 return connman_inet_del_ipv6_network_route(index, host, 128);
698 int connman_inet_add_ipv6_network_route(int index, const char *host,
700 unsigned char prefix_len)
705 DBG("index %d host %s gateway %s", index, host, gateway);
710 memset(&rt, 0, sizeof(rt));
712 rt.rtmsg_dst_len = prefix_len;
714 if (inet_pton(AF_INET6, host, &rt.rtmsg_dst) < 0) {
719 rt.rtmsg_flags = RTF_UP | RTF_HOST;
722 * Set RTF_GATEWAY only when gateway is set, the gateway IP address is
723 * not IPv6 any address (e.g., ::) and the address is valid (conversion
724 * succeeds). If the given gateway IP address is any address then
725 * adding of route will fail when RTF_GATEWAY set. Passing gateway as
726 * NULL or IPv6 any address should have the same effect.
729 if (gateway && !__connman_inet_is_any_addr(gateway, AF_INET6) &&
730 inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway) > 0)
731 rt.rtmsg_flags |= RTF_GATEWAY;
734 rt.rtmsg_ifindex = index;
736 sk = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
742 if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
749 connman_error("Set IPv6 host route error (%s)",
755 int connman_inet_add_ipv6_host_route(int index, const char *host,
758 return connman_inet_add_ipv6_network_route(index, host, gateway, 128);
761 int connman_inet_clear_ipv6_gateway_address(int index, const char *gateway)
766 DBG("index %d gateway %s", index, gateway);
771 memset(&rt, 0, sizeof(rt));
773 if (inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway) < 0) {
778 rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
780 rt.rtmsg_dst_len = 0;
781 rt.rtmsg_ifindex = index;
783 sk = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
789 if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
796 connman_error("Clear default IPv6 gateway error (%s)",
802 int connman_inet_set_gateway_interface(int index)
806 struct sockaddr_in addr;
809 DBG("index %d", index);
811 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
817 memset(&ifr, 0, sizeof(ifr));
818 ifr.ifr_ifindex = index;
820 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
826 DBG("ifname %s", ifr.ifr_name);
828 memset(&rt, 0, sizeof(rt));
829 rt.rt_flags = RTF_UP;
831 memset(&addr, 0, sizeof(addr));
832 addr.sin_family = AF_INET;
833 addr.sin_addr.s_addr = INADDR_ANY;
835 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
836 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
837 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
839 rt.rt_dev = ifr.ifr_name;
841 if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
848 connman_error("Setting default interface route failed (%s)",
854 int connman_inet_set_ipv6_gateway_interface(int index)
858 struct sockaddr_in6 addr;
859 const struct in6_addr any = IN6ADDR_ANY_INIT;
862 DBG("index %d", index);
864 sk = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
870 memset(&ifr, 0, sizeof(ifr));
871 ifr.ifr_ifindex = index;
873 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
879 DBG("ifname %s", ifr.ifr_name);
881 memset(&rt, 0, sizeof(rt));
882 rt.rt_flags = RTF_UP;
884 memset(&addr, 0, sizeof(addr));
885 addr.sin6_family = AF_INET6;
886 addr.sin6_addr = any;
888 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
889 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
890 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
892 rt.rt_dev = ifr.ifr_name;
894 if (ioctl(sk, SIOCADDRT, &rt) < 0 && errno != EEXIST)
901 connman_error("Setting default interface route failed (%s)",
907 int connman_inet_clear_gateway_address(int index, const char *gateway)
911 struct sockaddr_in addr;
914 DBG("index %d gateway %s", index, gateway);
916 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
922 memset(&ifr, 0, sizeof(ifr));
923 ifr.ifr_ifindex = index;
925 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
931 DBG("ifname %s", ifr.ifr_name);
933 memset(&rt, 0, sizeof(rt));
934 rt.rt_flags = RTF_UP | RTF_GATEWAY;
936 memset(&addr, 0, sizeof(addr));
937 addr.sin_family = AF_INET;
938 addr.sin_addr.s_addr = INADDR_ANY;
939 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
941 memset(&addr, 0, sizeof(addr));
942 addr.sin_family = AF_INET;
943 addr.sin_addr.s_addr = inet_addr(gateway);
944 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
946 memset(&addr, 0, sizeof(addr));
947 addr.sin_family = AF_INET;
948 addr.sin_addr.s_addr = INADDR_ANY;
949 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
951 if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
958 connman_error("Removing default gateway route failed (%s)",
964 int connman_inet_clear_gateway_interface(int index)
968 struct sockaddr_in addr;
971 DBG("index %d", index);
973 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
979 memset(&ifr, 0, sizeof(ifr));
980 ifr.ifr_ifindex = index;
982 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
988 DBG("ifname %s", ifr.ifr_name);
990 memset(&rt, 0, sizeof(rt));
991 rt.rt_flags = RTF_UP;
993 memset(&addr, 0, sizeof(addr));
994 addr.sin_family = AF_INET;
995 addr.sin_addr.s_addr = INADDR_ANY;
997 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
998 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
999 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
1001 rt.rt_dev = ifr.ifr_name;
1003 if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
1010 connman_error("Removing default interface route failed (%s)",
1016 int connman_inet_clear_ipv6_gateway_interface(int index)
1020 struct sockaddr_in6 addr;
1021 const struct in6_addr any = IN6ADDR_ANY_INIT;
1024 DBG("index %d", index);
1026 sk = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
1032 memset(&ifr, 0, sizeof(ifr));
1033 ifr.ifr_ifindex = index;
1035 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1041 DBG("ifname %s", ifr.ifr_name);
1043 memset(&rt, 0, sizeof(rt));
1044 rt.rt_flags = RTF_UP;
1046 memset(&addr, 0, sizeof(addr));
1047 addr.sin6_family = AF_INET6;
1048 addr.sin6_addr = any;
1050 memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
1051 memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
1052 memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
1054 rt.rt_dev = ifr.ifr_name;
1056 if (ioctl(sk, SIOCDELRT, &rt) < 0 && errno != ESRCH)
1063 connman_error("Removing default interface route failed (%s)",
1069 bool connman_inet_compare_subnet(int index, const char *host)
1072 struct in_addr _host_addr;
1073 in_addr_t host_addr, netmask_addr, if_addr;
1074 struct sockaddr_in *netmask, *addr;
1077 DBG("host %s", host);
1082 if (inet_aton(host, &_host_addr) == 0)
1084 host_addr = _host_addr.s_addr;
1086 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
1090 memset(&ifr, 0, sizeof(ifr));
1091 ifr.ifr_ifindex = index;
1093 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
1098 if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0) {
1103 netmask = (struct sockaddr_in *)&ifr.ifr_netmask;
1104 netmask_addr = netmask->sin_addr.s_addr;
1106 if (ioctl(sk, SIOCGIFADDR, &ifr) < 0) {
1113 addr = (struct sockaddr_in *)&ifr.ifr_addr;
1114 if_addr = addr->sin_addr.s_addr;
1116 return ((if_addr & netmask_addr) == (host_addr & netmask_addr));
1119 int connman_inet_remove_from_bridge(int index, const char *bridge)
1127 sk = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
1133 memset(&ifr, 0, sizeof(ifr));
1134 strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name) - 1);
1135 ifr.ifr_ifindex = index;
1137 if (ioctl(sk, SIOCBRDELIF, &ifr) < 0)
1144 connman_error("Remove interface from bridge error %s",
1150 int connman_inet_add_to_bridge(int index, const char *bridge)
1158 sk = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
1164 memset(&ifr, 0, sizeof(ifr));
1165 strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name) - 1);
1166 ifr.ifr_ifindex = index;
1168 if (ioctl(sk, SIOCBRADDIF, &ifr) < 0)
1175 connman_error("Add interface to bridge error %s",
1181 int connman_inet_set_mtu(int index, int mtu)
1186 sk = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
1190 memset(&ifr, 0, sizeof(ifr));
1191 ifr.ifr_ifindex = index;
1193 err = ioctl(sk, SIOCGIFNAME, &ifr);
1196 err = ioctl(sk, SIOCSIFMTU, &ifr);
1203 int connman_inet_setup_tunnel(char *tunnel, int mtu)
1213 sk = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
1217 index = if_nametoindex(tunnel);
1219 err = connman_inet_set_mtu(index, mtu);
1223 memset(&ifr, 0, sizeof(ifr));
1224 strncpy(ifr.ifr_name, tunnel, sizeof(ifr.ifr_name) - 1);
1225 err = ioctl(sk, SIOCGIFFLAGS, &ifr);
1232 if ((ifr.ifr_flags ^ flags) & mask) {
1233 ifr.ifr_flags &= ~mask;
1234 ifr.ifr_flags |= mask & flags;
1235 err = ioctl(sk, SIOCSIFFLAGS, &ifr);
1237 connman_error("SIOCSIFFLAGS failed: %s",
1246 int connman_inet_create_tunnel(char **iface)
1251 fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
1254 connman_error("Failed to open /dev/net/tun: %s",
1259 memset(&ifr, 0, sizeof(ifr));
1260 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
1262 for (i = 0; i < 256; i++) {
1263 sprintf(ifr.ifr_name, "tun%d", i);
1265 if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
1270 connman_error("Failed to find available tun device");
1275 *iface = g_strdup(ifr.ifr_name);
1281 * This callback struct is used when sending router and neighbor
1282 * solicitation and advertisement messages.
1285 GIOChannel *channel;
1287 struct sockaddr_in6 addr;
1293 #define CMSG_BUF_LEN 512
1294 #define IN6ADDR_ALL_NODES_MC_INIT \
1295 { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x1 } } } /* ff02::1 */
1296 #define IN6ADDR_ALL_ROUTERS_MC_INIT \
1297 { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x2 } } } /* ff02::2 */
1299 static const struct in6_addr in6addr_all_nodes_mc = IN6ADDR_ALL_NODES_MC_INIT;
1300 static const struct in6_addr in6addr_all_routers_mc =
1301 IN6ADDR_ALL_ROUTERS_MC_INIT;
1303 static void xs_cleanup(struct xs_cb_data *data)
1305 if (data->channel) {
1306 g_io_channel_shutdown(data->channel, TRUE, NULL);
1307 g_io_channel_unref(data->channel);
1308 data->channel = NULL;
1311 if (data->timeout > 0)
1312 g_source_remove(data->timeout);
1314 if (data->watch_id > 0)
1315 g_source_remove(data->watch_id);
1320 static gboolean rs_timeout_cb(gpointer user_data)
1322 struct xs_cb_data *data = user_data;
1324 DBG("user data %p", user_data);
1329 if (data->callback) {
1330 __connman_inet_rs_cb_t cb = data->callback;
1331 cb(NULL, 0, data->user_data);
1339 static int icmpv6_recv(int fd, struct xs_cb_data *data)
1343 unsigned char chdr[CMSG_BUF_LEN];
1344 unsigned char buf[1540];
1345 struct nd_router_advert *hdr;
1346 struct sockaddr_in6 saddr;
1348 __connman_inet_rs_cb_t cb = data->callback;
1352 iov.iov_len = sizeof(buf);
1355 mhdr.msg_name = (void *)&saddr;
1356 mhdr.msg_namelen = sizeof(struct sockaddr_in6);
1358 mhdr.msg_iov = &iov;
1359 mhdr.msg_iovlen = 1;
1360 mhdr.msg_control = (void *)chdr;
1361 mhdr.msg_controllen = CMSG_BUF_LEN;
1363 len = recvmsg(fd, &mhdr, 0);
1365 cb(NULL, 0, data->user_data);
1369 hdr = (struct nd_router_advert *)buf;
1370 DBG("code %d len %zd hdr %zd", hdr->nd_ra_code, len,
1371 sizeof(struct nd_router_advert));
1372 if (hdr->nd_ra_code != 0)
1375 cb(hdr, len, data->user_data);
1380 static gboolean icmpv6_event(GIOChannel *chan, GIOCondition cond, gpointer data)
1383 struct xs_cb_data *xs_data = data;
1387 if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1390 fd = g_io_channel_unix_get_fd(chan);
1391 ret = icmpv6_recv(fd, xs_data);
1396 xs_cleanup(xs_data);
1400 /* Adapted from RFC 1071 "C" Implementation Example */
1401 static uint16_t csum(const void *phdr, const void *data, socklen_t datalen,
1402 const void *extra_data, socklen_t extra_datalen)
1404 register unsigned long sum = 0;
1409 /* caller must make sure datalen is even */
1411 addr = (uint16_t *)phdr;
1412 for (i = 0; i < 20; i++)
1416 addr = (uint16_t *)data;
1424 count = extra_datalen;
1425 addr = (uint16_t *)extra_data;
1434 sum = (sum & 0xffff) + (sum >> 16);
1436 return (uint16_t)~sum;
1439 static int ndisc_send_unspec(int type, int oif, const struct in6_addr *dest,
1440 const struct in6_addr *source,
1441 unsigned char *buf, size_t len, uint16_t lifetime)
1444 struct in6_addr src;
1445 struct in6_addr dst;
1447 uint8_t reserved[3];
1454 struct icmp6_hdr icmp;
1455 struct nd_neighbor_solicit ns;
1456 struct nd_router_solicit rs;
1457 struct nd_router_advert ra;
1462 struct cmsghdr *cmsg;
1463 struct in6_pktinfo *pinfo;
1464 struct sockaddr_in6 dst, src;
1465 char cbuf[CMSG_SPACE(sizeof(*pinfo))];
1466 struct iovec iov[2];
1467 int fd, datalen, ret, iovlen = 1;
1471 fd = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_RAW);
1475 memset(&frame, 0, sizeof(frame));
1476 memset(&dst, 0, sizeof(dst));
1478 if (type == ND_ROUTER_SOLICIT)
1479 datalen = sizeof(frame.i.rs); /* 8, csum() safe */
1480 else if (type == ND_ROUTER_ADVERT) {
1481 datalen = sizeof(frame.i.ra); /* 16, csum() safe */
1482 frame.i.ra.nd_ra_router_lifetime = htons(lifetime);
1483 } else if (type == ND_NEIGHBOR_SOLICIT) {
1484 datalen = sizeof(frame.i.ns); /* 24, csum() safe */
1485 memcpy(&frame.i.ns.nd_ns_target, buf, sizeof(struct in6_addr));
1491 dst.sin6_addr = *dest;
1494 src.sin6_addr = *source;
1496 src.sin6_addr = in6addr_any;
1498 /* Fill in the IPv6 header */
1499 frame.ip.ip6_vfc = 0x60;
1500 frame.ip.ip6_plen = htons(datalen + len);
1501 frame.ip.ip6_nxt = IPPROTO_ICMPV6;
1502 frame.ip.ip6_hlim = 255;
1503 frame.ip.ip6_dst = dst.sin6_addr;
1504 frame.ip.ip6_src = src.sin6_addr;
1505 /* all other fields are already set to zero */
1507 /* Prepare pseudo header for csum */
1508 memset(&phdr, 0, sizeof(phdr));
1509 phdr.dst = dst.sin6_addr;
1510 phdr.src = src.sin6_addr;
1511 phdr.plen = htonl(datalen + len);
1512 phdr.nxt = IPPROTO_ICMPV6;
1514 /* Fill in remaining ICMP header fields */
1515 frame.i.icmp.icmp6_type = type;
1516 frame.i.icmp.icmp6_cksum = csum(&phdr, &frame.i, datalen, buf, len);
1518 iov[0].iov_base = &frame;
1519 iov[0].iov_len = sizeof(frame.ip) + datalen;
1522 iov[1].iov_base = buf;
1523 iov[1].iov_len = len;
1527 dst.sin6_family = AF_INET6;
1528 msgh.msg_name = &dst;
1529 msgh.msg_namelen = sizeof(dst);
1531 msgh.msg_iovlen = iovlen;
1534 memset(cbuf, 0, CMSG_SPACE(sizeof(*pinfo)));
1535 cmsg = (struct cmsghdr *)cbuf;
1536 pinfo = (struct in6_pktinfo *)CMSG_DATA(cmsg);
1537 pinfo->ipi6_ifindex = oif;
1539 cmsg->cmsg_len = CMSG_LEN(sizeof(*pinfo));
1540 cmsg->cmsg_level = IPPROTO_IPV6;
1541 cmsg->cmsg_type = IPV6_PKTINFO;
1542 msgh.msg_control = cmsg;
1543 msgh.msg_controllen = cmsg->cmsg_len;
1545 ret = sendmsg(fd, &msgh, 0);
1551 static inline void ipv6_addr_set(struct in6_addr *addr,
1552 uint32_t w1, uint32_t w2,
1553 uint32_t w3, uint32_t w4)
1555 addr->s6_addr32[0] = w1;
1556 addr->s6_addr32[1] = w2;
1557 addr->s6_addr32[2] = w3;
1558 addr->s6_addr32[3] = w4;
1561 static inline void ipv6_addr_solict_mult(const struct in6_addr *addr,
1562 struct in6_addr *solicited)
1564 ipv6_addr_set(solicited, htonl(0xFF020000), 0, htonl(0x1),
1565 htonl(0xFF000000) | addr->s6_addr32[3]);
1568 static int if_mc_group(int sock, int ifindex, const struct in6_addr *mc_addr,
1571 unsigned int val = 0;
1572 struct ipv6_mreq mreq;
1575 memset(&mreq, 0, sizeof(mreq));
1576 mreq.ipv6mr_interface = ifindex;
1577 mreq.ipv6mr_multiaddr = *mc_addr;
1579 ret = setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
1583 DBG("Cannot set IPV6_MULTICAST_LOOP %d/%s", ret,
1588 ret = setsockopt(sock, IPPROTO_IPV6, cmd, &mreq, sizeof(mreq));
1591 DBG("Cannot set option %d %d/%s", cmd, ret, strerror(-ret));
1598 int __connman_inet_ipv6_send_rs(int index, int timeout,
1599 __connman_inet_rs_cb_t callback, void *user_data)
1601 struct xs_cb_data *data;
1602 struct icmp6_filter filter;
1603 struct in6_addr solicit;
1604 struct in6_addr dst = in6addr_all_routers_mc;
1610 data = g_try_malloc0(sizeof(struct xs_cb_data));
1614 data->callback = callback;
1615 data->user_data = user_data;
1616 data->timeout = g_timeout_add_seconds(timeout, rs_timeout_cb, data);
1618 sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1624 ICMP6_FILTER_SETBLOCKALL(&filter);
1625 ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter);
1627 setsockopt(sk, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
1628 sizeof(struct icmp6_filter));
1630 ipv6_addr_solict_mult(&dst, &solicit);
1631 if_mc_group(sk, index, &in6addr_all_nodes_mc, IPV6_JOIN_GROUP);
1632 if_mc_group(sk, index, &solicit, IPV6_JOIN_GROUP);
1634 data->channel = g_io_channel_unix_new(sk);
1635 g_io_channel_set_close_on_unref(data->channel, TRUE);
1637 g_io_channel_set_encoding(data->channel, NULL, NULL);
1638 g_io_channel_set_buffered(data->channel, FALSE);
1640 data->watch_id = g_io_add_watch(data->channel,
1641 G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1642 icmpv6_event, data);
1644 ndisc_send_unspec(ND_ROUTER_SOLICIT, index, &dst, NULL, NULL, 0, 0);
1649 static inline void ipv6_addr_advert_mult(const struct in6_addr *addr,
1650 struct in6_addr *advert)
1652 ipv6_addr_set(advert, htonl(0xFF020000), 0, htonl(0x2),
1653 htonl(0xFF000000) | addr->s6_addr32[3]);
1656 #define MSG_SIZE_SEND 1452
1658 static int inc_len(int len, int inc)
1660 if (len > MSG_SIZE_SEND)
1667 int __connman_inet_ipv6_send_ra(int index, struct in6_addr *src_addr,
1668 GSList *prefixes, int router_lifetime)
1671 struct in6_addr src, *source;
1672 struct in6_addr dst = in6addr_all_nodes_mc;
1673 GDHCPIAPrefix *prefix;
1674 unsigned char buf[MSG_SIZE_SEND];
1675 char addr_str[INET6_ADDRSTRLEN];
1682 sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1687 __connman_inet_get_interface_ll_address(index, AF_INET6, &src);
1692 DBG("sock %d index %d prefixes %p src %s lifetime %d", sk, index,
1693 prefixes, inet_ntop(AF_INET6, source, addr_str,
1697 memset(buf, 0, MSG_SIZE_SEND);
1700 for (list = prefixes; list; list = list->next) {
1701 struct nd_opt_prefix_info *pinfo;
1703 prefix = list->data;
1704 pinfo = (struct nd_opt_prefix_info *)(buf + len);
1706 len = inc_len(len, sizeof(*pinfo));
1712 pinfo->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION;
1713 pinfo->nd_opt_pi_len = 4;
1714 pinfo->nd_opt_pi_prefix_len = prefix->prefixlen;
1715 pinfo->nd_opt_pi_flags_reserved = ND_OPT_PI_FLAG_ONLINK;
1716 pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO;
1717 if (router_lifetime > 0) {
1718 pinfo->nd_opt_pi_valid_time = htonl(prefix->valid);
1719 pinfo->nd_opt_pi_preferred_time =
1720 htonl(prefix->preferred);
1722 pinfo->nd_opt_pi_reserved2 = 0;
1724 memcpy(&pinfo->nd_opt_pi_prefix, &prefix->prefix,
1725 sizeof(struct in6_addr));
1727 DBG("[%d] index %d prefix %s/%d", count, index,
1728 inet_ntop(AF_INET6, &prefix->prefix, addr_str,
1729 INET6_ADDRSTRLEN), prefix->prefixlen);
1735 err = ndisc_send_unspec(ND_ROUTER_ADVERT, index, &dst, source,
1736 buf, len, router_lifetime);
1738 DBG("cannot send RA %d/%s", err, strerror(-err));
1746 void __connman_inet_ipv6_stop_recv_rs(void *context)
1751 xs_cleanup(context);
1754 static int icmpv6_rs_recv(int fd, struct xs_cb_data *data)
1758 unsigned char chdr[CMSG_BUF_LEN];
1759 unsigned char buf[1540];
1760 struct nd_router_solicit *hdr;
1761 struct sockaddr_in6 saddr;
1763 __connman_inet_recv_rs_cb_t cb = data->callback;
1767 iov.iov_len = sizeof(buf);
1770 mhdr.msg_name = (void *)&saddr;
1771 mhdr.msg_namelen = sizeof(struct sockaddr_in6);
1773 mhdr.msg_iov = &iov;
1774 mhdr.msg_iovlen = 1;
1775 mhdr.msg_control = (void *)chdr;
1776 mhdr.msg_controllen = CMSG_BUF_LEN;
1778 len = recvmsg(fd, &mhdr, 0);
1780 cb(NULL, 0, data->user_data);
1784 hdr = (struct nd_router_solicit *)buf;
1785 DBG("code %d len %zd hdr %zd", hdr->nd_rs_code, len,
1786 sizeof(struct nd_router_solicit));
1787 if (hdr->nd_rs_code != 0)
1790 cb(hdr, len, data->user_data);
1794 static gboolean icmpv6_rs_event(GIOChannel *chan, GIOCondition cond,
1798 struct xs_cb_data *xs_data = data;
1802 if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1805 fd = g_io_channel_unix_get_fd(chan);
1806 ret = icmpv6_rs_recv(fd, xs_data);
1811 xs_data->watch_id = 0;
1815 int __connman_inet_ipv6_start_recv_rs(int index,
1816 __connman_inet_recv_rs_cb_t callback,
1820 struct xs_cb_data *data;
1821 struct icmp6_filter filter;
1822 char addr_str[INET6_ADDRSTRLEN];
1825 data = g_try_malloc0(sizeof(struct xs_cb_data));
1829 data->callback = callback;
1830 data->user_data = user_data;
1832 sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1840 ICMP6_FILTER_SETBLOCKALL(&filter);
1841 ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter);
1843 setsockopt(sk, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
1844 sizeof(struct icmp6_filter));
1846 err = if_mc_group(sk, index, &in6addr_all_routers_mc, IPV6_JOIN_GROUP);
1848 DBG("Cannot join mc %s %d/%s", inet_ntop(AF_INET6,
1849 &in6addr_all_routers_mc, addr_str, INET6_ADDRSTRLEN),
1850 err, strerror(-err));
1852 data->channel = g_io_channel_unix_new(sk);
1853 g_io_channel_set_close_on_unref(data->channel, TRUE);
1855 g_io_channel_set_encoding(data->channel, NULL, NULL);
1856 g_io_channel_set_buffered(data->channel, FALSE);
1858 data->watch_id = g_io_add_watch(data->channel,
1859 G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
1860 icmpv6_rs_event, data);
1867 static gboolean ns_timeout_cb(gpointer user_data)
1869 struct xs_cb_data *data = user_data;
1871 DBG("user data %p", user_data);
1876 if (data->callback) {
1877 __connman_inet_ns_cb_t cb = data->callback;
1878 cb(NULL, 0, &data->addr.sin6_addr, data->user_data);
1886 static int icmpv6_nd_recv(int fd, struct xs_cb_data *data)
1890 unsigned char chdr[CMSG_BUF_LEN];
1891 unsigned char buf[1540];
1892 struct nd_neighbor_advert *hdr;
1893 struct sockaddr_in6 saddr;
1895 __connman_inet_ns_cb_t cb = data->callback;
1899 iov.iov_len = sizeof(buf);
1902 mhdr.msg_name = (void *)&saddr;
1903 mhdr.msg_namelen = sizeof(struct sockaddr_in6);
1905 mhdr.msg_iov = &iov;
1906 mhdr.msg_iovlen = 1;
1907 mhdr.msg_control = (void *)chdr;
1908 mhdr.msg_controllen = CMSG_BUF_LEN;
1910 len = recvmsg(fd, &mhdr, 0);
1912 cb(NULL, 0, &data->addr.sin6_addr, data->user_data);
1916 hdr = (struct nd_neighbor_advert *)buf;
1917 DBG("code %d len %zd hdr %zd", hdr->nd_na_code, len,
1918 sizeof(struct nd_neighbor_advert));
1919 if (hdr->nd_na_code != 0)
1923 * We can receive any neighbor advertisement so we need to check if the
1924 * packet was meant for us and ignore the packet otherwise.
1926 if (memcmp(&data->addr.sin6_addr, &hdr->nd_na_target,
1927 sizeof(struct in6_addr)))
1930 cb(hdr, len, &data->addr.sin6_addr, data->user_data);
1935 static gboolean icmpv6_nd_event(GIOChannel *chan, GIOCondition cond,
1939 struct xs_cb_data *xs_data = data;
1943 if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
1946 fd = g_io_channel_unix_get_fd(chan);
1947 ret = icmpv6_nd_recv(fd, xs_data);
1952 xs_cleanup(xs_data);
1956 int __connman_inet_ipv6_do_dad(int index, int timeout_ms,
1957 struct in6_addr *addr,
1958 __connman_inet_ns_cb_t callback,
1961 struct xs_cb_data *data;
1962 struct icmp6_filter filter;
1963 struct in6_addr solicit;
1964 int sk, err, val = 1;
1966 if (timeout_ms <= 0)
1969 data = g_try_malloc0(sizeof(struct xs_cb_data));
1973 data->callback = callback;
1974 data->user_data = user_data;
1975 data->timeout = g_timeout_add_full(G_PRIORITY_DEFAULT,
1980 memcpy(&data->addr.sin6_addr, addr, sizeof(struct in6_addr));
1982 sk = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
1988 ICMP6_FILTER_SETBLOCKALL(&filter);
1989 ICMP6_FILTER_SETPASS(ND_NEIGHBOR_ADVERT, &filter);
1991 setsockopt(sk, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
1992 sizeof(struct icmp6_filter));
1994 if (setsockopt(sk, IPPROTO_IPV6, IPV6_RECVPKTINFO,
1995 &val, sizeof(val)) < 0) {
1997 DBG("Cannot set IPV6_RECVPKTINFO %d/%s", err,
2003 if (setsockopt(sk, IPPROTO_IPV6, IPV6_RECVHOPLIMIT,
2004 &val, sizeof(val)) < 0) {
2006 DBG("Cannot set IPV6_RECVHOPLIMIT %d/%s", err,
2013 setsockopt(sk, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &val, sizeof(val));
2015 ipv6_addr_solict_mult(addr, &solicit);
2016 if_mc_group(sk, index, &in6addr_all_nodes_mc, IPV6_JOIN_GROUP);
2017 if_mc_group(sk, index, &solicit, IPV6_JOIN_GROUP);
2019 data->channel = g_io_channel_unix_new(sk);
2020 g_io_channel_set_close_on_unref(data->channel, TRUE);
2022 g_io_channel_set_encoding(data->channel, NULL, NULL);
2023 g_io_channel_set_buffered(data->channel, FALSE);
2025 data->watch_id = g_io_add_watch(data->channel,
2026 G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
2027 icmpv6_nd_event, data);
2029 err = ndisc_send_unspec(ND_NEIGHBOR_SOLICIT, index, &solicit, NULL,
2030 (unsigned char *)addr, 0, 0);
2032 DBG("Cannot send NS %d/%s", err, strerror(-err));
2039 GSList *__connman_inet_ipv6_get_prefixes(struct nd_router_advert *hdr,
2040 unsigned int length)
2042 GSList *prefixes = NULL;
2046 if (length <= sizeof(struct nd_router_advert))
2049 len = length - sizeof(struct nd_router_advert);
2050 pos = (uint8_t *)hdr + sizeof(struct nd_router_advert);
2053 struct nd_opt_prefix_info *pinfo;
2054 char prefix_str[INET6_ADDRSTRLEN+1], *str;
2061 optlen = pos[1] << 3;
2062 if (optlen == 0 || optlen > len)
2066 case ND_OPT_PREFIX_INFORMATION:
2067 pinfo = (struct nd_opt_prefix_info *)pos;
2068 prefix = inet_ntop(AF_INET6, &pinfo->nd_opt_pi_prefix,
2069 prefix_str, INET6_ADDRSTRLEN);
2073 str = g_strdup_printf("%s/%d", prefix,
2074 pinfo->nd_opt_pi_prefix_len);
2075 prefixes = g_slist_prepend(prefixes, str);
2077 DBG("prefix %s", str);
2089 static int get_dest_addr(int family, int index, char *buf, int len)
2095 sk = socket(family, SOCK_DGRAM | SOCK_CLOEXEC, 0);
2099 memset(&ifr, 0, sizeof(ifr));
2100 ifr.ifr_ifindex = index;
2102 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
2103 DBG("SIOCGIFNAME (%d/%s)", errno, strerror(errno));
2108 if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
2109 DBG("SIOCGIFFLAGS (%d/%s)", errno, strerror(errno));
2114 if ((ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
2120 DBG("index %d %s", index, ifr.ifr_name);
2122 if (ioctl(sk, SIOCGIFDSTADDR, &ifr) < 0) {
2123 connman_error("Get destination address failed (%s)",
2133 addr = &((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_addr;
2136 addr = &((struct sockaddr_in6 *)&ifr.ifr_dstaddr)->sin6_addr;
2143 if (!inet_ntop(family, addr, buf, len)) {
2144 DBG("error %d/%s", errno, strerror(errno));
2151 int connman_inet_get_dest_addr(int index, char **dest)
2153 char addr[INET_ADDRSTRLEN];
2156 ret = get_dest_addr(PF_INET, index, addr, INET_ADDRSTRLEN);
2160 *dest = g_strdup(addr);
2162 DBG("destination %s", *dest);
2167 int connman_inet_ipv6_get_dest_addr(int index, char **dest)
2169 char addr[INET6_ADDRSTRLEN];
2172 ret = get_dest_addr(PF_INET6, index, addr, INET6_ADDRSTRLEN);
2176 *dest = g_strdup(addr);
2178 DBG("destination %s", *dest);
2183 int __connman_inet_rtnl_open(struct __connman_inet_rtnl_handle *rth)
2186 int rcvbuf = 1024 * 4;
2188 rth->fd = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE);
2190 connman_error("Can not open netlink socket: %s",
2195 if (setsockopt(rth->fd, SOL_SOCKET, SO_SNDBUF, &sndbuf,
2196 sizeof(sndbuf)) < 0) {
2197 connman_error("SO_SNDBUF: %s", strerror(errno));
2201 if (setsockopt(rth->fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf,
2202 sizeof(rcvbuf)) < 0) {
2203 connman_error("SO_RCVBUF: %s", strerror(errno));
2207 memset(&rth->local, 0, sizeof(rth->local));
2208 rth->local.nl_family = AF_NETLINK;
2209 rth->local.nl_groups = 0;
2211 if (bind(rth->fd, (struct sockaddr *)&rth->local,
2212 sizeof(rth->local)) < 0) {
2213 connman_error("Can not bind netlink socket: %s",
2218 rth->seq = time(NULL);
2220 DBG("fd %d", rth->fd);
2225 struct inet_rtnl_cb_data {
2226 GIOChannel *channel;
2227 __connman_inet_rtnl_cb_t callback;
2230 struct __connman_inet_rtnl_handle *rtnl;
2234 static void inet_rtnl_cleanup(struct inet_rtnl_cb_data *data)
2236 struct __connman_inet_rtnl_handle *rth = data->rtnl;
2238 if (data->channel) {
2239 g_io_channel_shutdown(data->channel, TRUE, NULL);
2240 g_io_channel_unref(data->channel);
2241 data->channel = NULL;
2244 DBG("data %p", data);
2246 if (data->rtnl_timeout > 0)
2247 g_source_remove(data->rtnl_timeout);
2249 if (data->watch_id > 0)
2250 g_source_remove(data->watch_id);
2253 __connman_inet_rtnl_close(rth);
2260 static gboolean inet_rtnl_timeout_cb(gpointer user_data)
2262 struct inet_rtnl_cb_data *data = user_data;
2264 DBG("user data %p", user_data);
2270 data->callback(NULL, data->user_data);
2272 data->rtnl_timeout = 0;
2273 inet_rtnl_cleanup(data);
2277 static int inet_rtnl_recv(GIOChannel *chan, struct inet_rtnl_cb_data *rtnl_data)
2279 struct __connman_inet_rtnl_handle *rth = rtnl_data->rtnl;
2280 struct nlmsghdr *h = NULL;
2281 struct sockaddr_nl nladdr;
2282 socklen_t addr_len = sizeof(nladdr);
2283 unsigned char buf[4096];
2288 memset(buf, 0, sizeof(buf));
2289 memset(&nladdr, 0, sizeof(nladdr));
2291 fd = g_io_channel_unix_get_fd(chan);
2293 status = recvfrom(fd, buf, sizeof(buf), 0,
2294 (struct sockaddr *) &nladdr, &addr_len);
2296 if (errno == EINTR || errno == EAGAIN)
2305 if (nladdr.nl_pid != 0) { /* not sent by kernel, ignore */
2306 DBG("Received msg from %u, ignoring it", nladdr.nl_pid);
2313 struct nlmsgerr *err;
2317 if (!NLMSG_OK(h, len))
2320 if (h->nlmsg_seq != rth->seq) {
2322 DBG("skip %d/%d len %d", rth->seq,
2323 h->nlmsg_seq, h->nlmsg_len);
2325 len -= h->nlmsg_len;
2326 ptr += h->nlmsg_len;
2330 switch (h->nlmsg_type) {
2336 err = (struct nlmsgerr *)NLMSG_DATA(h);
2337 connman_error("RTNETLINK answers %s (%d)",
2338 strerror(-err->error), -err->error);
2345 if (h->nlmsg_seq == rth->seq) {
2346 DBG("received %d seq %d", h->nlmsg_len, h->nlmsg_seq);
2348 rtnl_data->callback(h, rtnl_data->user_data);
2350 inet_rtnl_cleanup(rtnl_data);
2356 static gboolean inet_rtnl_event(GIOChannel *chan, GIOCondition cond,
2360 struct inet_rtnl_cb_data *rtnl_data = user_data;
2364 if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
2367 ret = inet_rtnl_recv(chan, rtnl_data);
2372 rtnl_data->callback(NULL, rtnl_data->user_data);
2373 inet_rtnl_cleanup(rtnl_data);
2377 int __connman_inet_rtnl_talk(struct __connman_inet_rtnl_handle *rtnl,
2378 struct nlmsghdr *n, int timeout,
2379 __connman_inet_rtnl_cb_t callback, void *user_data)
2381 struct sockaddr_nl nladdr;
2382 struct inet_rtnl_cb_data *data;
2385 memset(&nladdr, 0, sizeof(nladdr));
2386 nladdr.nl_family = AF_NETLINK;
2388 n->nlmsg_seq = ++rtnl->seq;
2391 data = g_try_malloc0(sizeof(struct inet_rtnl_cb_data));
2395 data->callback = callback;
2396 data->user_data = user_data;
2398 data->rtnl_timeout = g_timeout_add_seconds(timeout,
2399 inet_rtnl_timeout_cb, data);
2401 data->channel = g_io_channel_unix_new(rtnl->fd);
2403 g_io_channel_set_encoding(data->channel, NULL, NULL);
2404 g_io_channel_set_buffered(data->channel, FALSE);
2406 data->watch_id = g_io_add_watch(data->channel,
2407 G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
2408 inet_rtnl_event, data);
2410 n->nlmsg_flags |= NLM_F_ACK;
2412 err = sendto(rtnl->fd, &rtnl->req.n, rtnl->req.n.nlmsg_len, 0,
2413 (struct sockaddr *) &nladdr, sizeof(nladdr));
2414 DBG("handle %p len %d", rtnl, rtnl->req.n.nlmsg_len);
2416 connman_error("Can not talk to rtnetlink err %d %s",
2417 -errno, strerror(errno));
2421 if ((unsigned int)err != rtnl->req.n.nlmsg_len) {
2422 connman_error("Sent %d bytes, msg truncated", err);
2429 void __connman_inet_rtnl_close(struct __connman_inet_rtnl_handle *rth)
2431 DBG("handle %p", rth);
2439 int __connman_inet_rtnl_addattr32(struct nlmsghdr *n, size_t maxlen, int type,
2442 int len = RTA_LENGTH(4);
2445 if (NLMSG_ALIGN(n->nlmsg_len) + len > maxlen) {
2446 DBG("Error! max allowed bound %zd exceeded", maxlen);
2449 rta = NLMSG_TAIL(n);
2450 rta->rta_type = type;
2452 memcpy(RTA_DATA(rta), &data, 4);
2453 n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
2458 static int parse_rtattr(struct rtattr *tb[], int max,
2459 struct rtattr *rta, int len)
2461 memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
2462 while (RTA_OK(rta, len)) {
2463 if ((rta->rta_type <= max) && (!tb[rta->rta_type]))
2464 tb[rta->rta_type] = rta;
2465 rta = RTA_NEXT(rta, len);
2468 connman_error("Deficit %d, rta_len=%d", len, rta->rta_len);
2473 struct get_route_cb_data {
2474 connman_inet_addr_cb_t callback;
2478 static void get_route_cb(struct nlmsghdr *answer, void *user_data)
2480 struct get_route_cb_data *data = user_data;
2481 struct rtattr *tb[RTA_MAX+1];
2482 struct rtmsg *r = NLMSG_DATA(answer);
2483 int len, index = -1;
2485 const char *addr = NULL;
2487 DBG("answer %p data %p", answer, user_data);
2492 len = answer->nlmsg_len;
2494 if (answer->nlmsg_type != RTM_NEWROUTE &&
2495 answer->nlmsg_type != RTM_DELROUTE) {
2496 connman_error("Not a route: %08x %08x %08x",
2497 answer->nlmsg_len, answer->nlmsg_type,
2498 answer->nlmsg_flags);
2502 len -= NLMSG_LENGTH(sizeof(*r));
2504 connman_error("BUG: wrong nlmsg len %d", len);
2508 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
2511 index = *(int *)RTA_DATA(tb[RTA_OIF]);
2513 if (tb[RTA_GATEWAY])
2514 addr = inet_ntop(r->rtm_family,
2515 RTA_DATA(tb[RTA_GATEWAY]),
2516 abuf, sizeof(abuf));
2518 DBG("addr %s index %d user %p", addr, index, data->user_data);
2521 if (data && data->callback)
2522 data->callback(addr, index, data->user_data);
2528 * Return the interface index that contains route to host.
2530 int __connman_inet_get_route(const char *dest_address,
2531 connman_inet_addr_cb_t callback, void *user_data)
2533 struct get_route_cb_data *data;
2534 struct addrinfo hints, *rp;
2535 struct __connman_inet_rtnl_handle *rth;
2538 DBG("dest %s", dest_address);
2543 memset(&hints, 0, sizeof(hints));
2544 hints.ai_family = AF_UNSPEC;
2545 hints.ai_flags = AI_PASSIVE | AI_NUMERICSERV | AI_NUMERICHOST;
2547 err = getaddrinfo(dest_address, NULL, &hints, &rp);
2551 rth = g_try_malloc0(sizeof(struct __connman_inet_rtnl_handle));
2557 rth->req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
2558 rth->req.n.nlmsg_flags = NLM_F_REQUEST;
2559 rth->req.n.nlmsg_type = RTM_GETROUTE;
2560 rth->req.u.r.rt.rtm_family = rp->ai_family;
2561 rth->req.u.r.rt.rtm_table = 0;
2562 rth->req.u.r.rt.rtm_protocol = 0;
2563 rth->req.u.r.rt.rtm_scope = 0;
2564 rth->req.u.r.rt.rtm_type = 0;
2565 rth->req.u.r.rt.rtm_src_len = 0;
2566 rth->req.u.r.rt.rtm_dst_len = rp->ai_addrlen << 3;
2567 rth->req.u.r.rt.rtm_tos = 0;
2569 __connman_inet_rtnl_addattr_l(&rth->req.n, sizeof(rth->req), RTA_DST,
2570 &rp->ai_addr, rp->ai_addrlen);
2574 err = __connman_inet_rtnl_open(rth);
2578 data = g_try_malloc(sizeof(struct get_route_cb_data));
2584 data->callback = callback;
2585 data->user_data = user_data;
2587 #define GET_ROUTE_TIMEOUT 2
2588 err = __connman_inet_rtnl_talk(rth, &rth->req.n, GET_ROUTE_TIMEOUT,
2589 get_route_cb, data);
2598 __connman_inet_rtnl_close(rth);
2605 int connman_inet_check_ipaddress(const char *host)
2607 struct addrinfo hints;
2608 struct addrinfo *addr;
2611 memset(&hints, 0, sizeof(struct addrinfo));
2612 hints.ai_flags = AI_NUMERICHOST;
2615 result = getaddrinfo(host, NULL, &hints, &addr);
2617 result = addr->ai_family;
2624 /* Check routine modified from ics-dhcp 4.2.3-P2 */
2625 bool connman_inet_check_hostname(const char *ptr, size_t len)
2630 * Not empty or complete length not over 255 characters.
2632 if ((len == 0) || (len > 256))
2636 * Consists of [[:alnum:]-]+ labels separated by [.]
2637 * a [_] is against RFC but seems to be "widely used"
2639 for (p = ptr; (*p != 0) && (len-- > 0); p++) {
2641 if ((*p == '-') || (*p == '_')) {
2643 * Not allowed at begin or end of a label.
2645 if (((p - ptr) == 0) || (len == 0) || (p[1] == '.'))
2648 } else if (*p == '.') {
2650 * Each label has to be 1-63 characters;
2651 * we allow [.] at the end ('foo.bar.')
2655 if ((d <= 0) || (d >= 64))
2658 ptr = p + 1; /* Jump to the next label */
2660 } else if (isalnum((unsigned char)*p) == 0) {
2662 * Also numbers at the begin are fine
2671 char **__connman_inet_get_running_interfaces(void)
2675 struct ifreq *ifr = NULL;
2676 int sk, i, numif, count = 0;
2678 memset(&ifc, 0, sizeof(ifc));
2680 sk = socket(AF_INET, SOCK_DGRAM, 0);
2684 if (ioctl(sk, SIOCGIFCONF, &ifc) < 0)
2688 * Allocate some extra bytes just in case there will
2689 * be new interfaces added between two SIOCGIFCONF
2692 ifr = g_try_malloc0(ifc.ifc_len * 2);
2698 if (ioctl(sk, SIOCGIFCONF, &ifc) < 0)
2701 numif = ifc.ifc_len / sizeof(struct ifreq);
2703 result = g_try_malloc0((numif + 1) * sizeof(char *));
2709 for (i = 0; i < numif; i++) {
2710 struct ifreq *r = &ifr[i];
2711 struct in6_addr *addr6;
2715 * Note that we do not return loopback interfaces here as they
2716 * are not needed for our purposes.
2718 switch (r->ifr_addr.sa_family) {
2720 addr4 = ntohl(((struct sockaddr_in *)
2721 &r->ifr_addr)->sin_addr.s_addr);
2722 if (((addr4 & 0xff000000) >> 24) == 127)
2726 addr6 = &((struct sockaddr_in6 *)
2727 &r->ifr_addr)->sin6_addr;
2728 if (IN6_IS_ADDR_LINKLOCAL(addr6))
2733 result[count++] = g_strdup(r->ifr_name);
2738 if (count < numif) {
2739 char **prev_result = result;
2740 result = g_try_realloc(result, (count + 1) * sizeof(char *));
2742 g_free(prev_result);
2755 bool connman_inet_is_ipv6_supported()
2759 sk = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
2767 int __connman_inet_get_interface_address(int index, int family, void *address)
2769 struct ifaddrs *ifaddr, *ifa;
2771 char name[IF_NAMESIZE];
2773 if (!if_indextoname(index, name))
2776 DBG("index %d interface %s", index, name);
2778 if (getifaddrs(&ifaddr) < 0) {
2780 DBG("Cannot get addresses err %d/%s", err, strerror(-err));
2784 for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
2788 if (strncmp(ifa->ifa_name, name, IF_NAMESIZE) == 0 &&
2789 ifa->ifa_addr->sa_family == family) {
2790 if (family == AF_INET) {
2791 struct sockaddr_in *in4 = (struct sockaddr_in *)
2793 if (in4->sin_addr.s_addr == INADDR_ANY)
2795 memcpy(address, &in4->sin_addr,
2796 sizeof(struct in_addr));
2797 } else if (family == AF_INET6) {
2798 struct sockaddr_in6 *in6 =
2799 (struct sockaddr_in6 *)ifa->ifa_addr;
2800 if (memcmp(&in6->sin6_addr, &in6addr_any,
2801 sizeof(struct in6_addr)) == 0)
2803 memcpy(address, &in6->sin6_addr,
2804 sizeof(struct in6_addr));
2817 freeifaddrs(ifaddr);
2821 int __connman_inet_get_interface_mac_address(int index, uint8_t *mac_address)
2827 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
2829 DBG("Open socket error");
2833 memset(&ifr, 0, sizeof(ifr));
2834 ifr.ifr_ifindex = index;
2836 err = ioctl(sk, SIOCGIFNAME, &ifr);
2838 DBG("Get interface name error");
2842 err = ioctl(sk, SIOCGIFHWADDR, &ifr);
2844 DBG("Get MAC address error");
2848 memcpy(mac_address, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2856 static int iprule_modify(int cmd, int family, uint32_t table_id,
2859 struct __connman_inet_rtnl_handle rth;
2862 memset(&rth, 0, sizeof(rth));
2864 rth.req.n.nlmsg_type = cmd;
2865 rth.req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
2866 rth.req.n.nlmsg_flags = NLM_F_REQUEST;
2867 rth.req.u.r.rt.rtm_family = family;
2868 rth.req.u.r.rt.rtm_protocol = RTPROT_BOOT;
2869 rth.req.u.r.rt.rtm_scope = RT_SCOPE_UNIVERSE;
2870 rth.req.u.r.rt.rtm_table = table_id;
2871 rth.req.u.r.rt.rtm_type = RTN_UNSPEC;
2872 rth.req.u.r.rt.rtm_flags = 0;
2874 if (cmd == RTM_NEWRULE) {
2875 rth.req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
2876 rth.req.u.r.rt.rtm_type = RTN_UNICAST;
2879 __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2880 FRA_FWMARK, fwmark);
2882 if (table_id < 256) {
2883 rth.req.u.r.rt.rtm_table = table_id;
2885 rth.req.u.r.rt.rtm_table = RT_TABLE_UNSPEC;
2886 __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2887 FRA_TABLE, table_id);
2890 if (rth.req.u.r.rt.rtm_family == AF_UNSPEC)
2891 rth.req.u.r.rt.rtm_family = AF_INET;
2893 ret = __connman_inet_rtnl_open(&rth);
2897 ret = __connman_inet_rtnl_send(&rth, &rth.req.n);
2900 __connman_inet_rtnl_close(&rth);
2905 int __connman_inet_add_fwmark_rule(uint32_t table_id, int family, uint32_t fwmark)
2907 /* ip rule add fwmark 9876 table 1234 */
2909 return iprule_modify(RTM_NEWRULE, family, table_id, fwmark);
2912 int __connman_inet_del_fwmark_rule(uint32_t table_id, int family, uint32_t fwmark)
2914 return iprule_modify(RTM_DELRULE, family, table_id, fwmark);
2917 static int iproute_default_modify(int cmd, uint32_t table_id, int ifindex,
2918 const char *gateway, unsigned char prefixlen)
2920 struct __connman_inet_rtnl_handle rth;
2921 unsigned char buf[sizeof(struct in6_addr)];
2923 int family = connman_inet_check_ipaddress(gateway);
2926 DBG("gateway %s/%u table %u", gateway, prefixlen, table_id);
2940 struct in_addr ipv4_subnet_addr, ipv4_mask;
2942 memset(&ipv4_subnet_addr, 0, sizeof(ipv4_subnet_addr));
2943 ipv4_mask.s_addr = htonl((0xffffffff << (32 - prefixlen)) & 0xffffffff);
2944 ipv4_subnet_addr.s_addr = inet_addr(gateway);
2945 ipv4_subnet_addr.s_addr &= ipv4_mask.s_addr;
2947 dst = g_strdup(inet_ntoa(ipv4_subnet_addr));
2950 ret = inet_pton(family, dst ? dst : gateway, buf);
2955 memset(&rth, 0, sizeof(rth));
2957 rth.req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
2958 rth.req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
2959 rth.req.n.nlmsg_type = cmd;
2960 rth.req.u.r.rt.rtm_family = family;
2961 rth.req.u.r.rt.rtm_table = RT_TABLE_MAIN;
2962 rth.req.u.r.rt.rtm_scope = RT_SCOPE_NOWHERE;
2963 rth.req.u.r.rt.rtm_protocol = RTPROT_BOOT;
2964 rth.req.u.r.rt.rtm_scope = RT_SCOPE_UNIVERSE;
2965 rth.req.u.r.rt.rtm_type = RTN_UNICAST;
2966 rth.req.u.r.rt.rtm_dst_len = prefixlen;
2968 __connman_inet_rtnl_addattr_l(&rth.req.n, sizeof(rth.req),
2969 prefixlen > 0 ? RTA_DST : RTA_GATEWAY, buf, len);
2971 if (table_id < 256) {
2972 rth.req.u.r.rt.rtm_table = table_id;
2974 rth.req.u.r.rt.rtm_table = RT_TABLE_UNSPEC;
2975 __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2976 RTA_TABLE, table_id);
2979 __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
2982 ret = __connman_inet_rtnl_open(&rth);
2986 ret = __connman_inet_rtnl_send(&rth, &rth.req.n);
2989 __connman_inet_rtnl_close(&rth);
2994 int __connman_inet_add_default_to_table(uint32_t table_id, int ifindex,
2995 const char *gateway)
2997 /* ip route add default via 1.2.3.4 dev wlan0 table 1234 */
2999 return iproute_default_modify(RTM_NEWROUTE, table_id, ifindex, gateway, 0);
3002 int __connman_inet_add_subnet_to_table(uint32_t table_id, int ifindex,
3003 const char *gateway, unsigned char prefixlen)
3005 /* ip route add 1.2.3.4/24 dev eth0 table 1234 */
3006 return iproute_default_modify(RTM_NEWROUTE, table_id, ifindex, gateway, prefixlen);
3009 int __connman_inet_del_default_from_table(uint32_t table_id, int ifindex,
3010 const char *gateway)
3012 /* ip route del default via 1.2.3.4 dev wlan0 table 1234 */
3014 return iproute_default_modify(RTM_DELROUTE, table_id, ifindex, gateway, 0);
3017 int __connman_inet_del_subnet_from_table(uint32_t table_id, int ifindex,
3018 const char *gateway, unsigned char prefixlen)
3020 /* ip route del 1.2.3.4/24 dev eth0 table 1234 */
3021 return iproute_default_modify(RTM_DELROUTE, table_id, ifindex, gateway, prefixlen);
3024 int __connman_inet_get_interface_ll_address(int index, int family,
3027 struct ifaddrs *ifaddr, *ifa;
3029 char name[IF_NAMESIZE];
3031 if (!if_indextoname(index, name))
3034 DBG("index %d interface %s", index, name);
3036 if (getifaddrs(&ifaddr) < 0) {
3038 DBG("Cannot get addresses err %d/%s", err, strerror(-err));
3042 for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
3046 if (strncmp(ifa->ifa_name, name, IF_NAMESIZE) == 0 &&
3047 ifa->ifa_addr->sa_family == family) {
3048 if (family == AF_INET) {
3049 struct sockaddr_in *in4 = (struct sockaddr_in *)
3051 if (in4->sin_addr.s_addr == INADDR_ANY)
3053 if ((in4->sin_addr.s_addr & IN_CLASSB_NET) !=
3054 ((in_addr_t) 0xa9fe0000))
3056 memcpy(address, &in4->sin_addr,
3057 sizeof(struct in_addr));
3058 } else if (family == AF_INET6) {
3059 struct sockaddr_in6 *in6 =
3060 (struct sockaddr_in6 *)ifa->ifa_addr;
3061 if (memcmp(&in6->sin6_addr, &in6addr_any,
3062 sizeof(struct in6_addr)) == 0)
3064 if (!IN6_IS_ADDR_LINKLOCAL(&in6->sin6_addr))
3067 memcpy(address, &in6->sin6_addr,
3068 sizeof(struct in6_addr));
3080 freeifaddrs(ifaddr);
3084 int __connman_inet_get_address_netmask(int ifindex,
3085 struct sockaddr_in *address,
3086 struct sockaddr_in *netmask)
3088 int sk, ret = -EINVAL;
3091 DBG("index %d", ifindex);
3093 sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
3097 memset(&ifr, 0, sizeof(ifr));
3098 ifr.ifr_ifindex = ifindex;
3100 if (ioctl(sk, SIOCGIFNAME, &ifr) < 0)
3103 if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0)
3106 memcpy(netmask, (struct sockaddr_in *)&ifr.ifr_netmask,
3107 sizeof(struct sockaddr_in));
3109 if (ioctl(sk, SIOCGIFADDR, &ifr) < 0)
3112 memcpy(address, (struct sockaddr_in *)&ifr.ifr_addr,
3113 sizeof(struct sockaddr_in));
3121 static int get_nfs_server_ip(const char *cmdline_file, const char *pnp_file,
3122 struct in_addr *addr)
3126 char addrstr[INET_ADDRSTRLEN];
3127 struct in_addr taddr;
3128 GError *error = NULL;
3129 char *cmdline = NULL;
3132 char **pnpent = NULL;
3137 cmdline_file = "/proc/cmdline";
3139 pnp_file = "/proc/net/pnp";
3142 addr->s_addr = INADDR_NONE;
3144 if (!g_file_get_contents(cmdline_file, &cmdline, NULL, &error)) {
3145 connman_error("%s: Cannot read %s %s\n", __func__,
3146 cmdline_file, error->message);
3150 if (g_file_test(pnp_file, G_FILE_TEST_EXISTS)) {
3151 if (!g_file_get_contents(pnp_file, &pnp, NULL, &error)) {
3152 connman_error("%s: Cannot read %s %s\n", __func__,
3153 pnp_file, error->message);
3159 len = strlen(cmdline);
3164 /* remove newline */
3165 if (cmdline[len - 1] == '\n')
3166 cmdline[--len] = '\0';
3168 /* split in arguments (seperated by space) */
3169 args = g_strsplit(cmdline, " ", 0);
3171 connman_error("%s: Cannot split cmdline \"%s\"\n", __func__,
3176 /* split in entries (by newlines) */
3177 pnpent = g_strsplit(pnp, "\n", 0);
3179 connman_error("%s: Cannot split pnp at file \"%s\"\n", __func__,
3184 /* first find root argument */
3185 for (pp = args; *pp; pp++) {
3186 if (!strcmp(*pp, "root=/dev/nfs"))
3189 /* no rootnfs found */
3193 /* locate nfsroot argument */
3194 for (pp = args; *pp; pp++) {
3195 if (!strncmp(*pp, "nfsroot=", strlen("nfsroot=")))
3198 /* no nfsroot argument found */
3202 /* determine if nfsroot server is provided */
3203 nfsargs = strchr(*pp, '=');
3208 /* find whether serverip is present */
3209 s = strchr(nfsargs, ':');
3214 /* no serverip, use bootserver */
3215 for (pp = pnpent; *pp; pp++) {
3216 if (!strncmp(*pp, "bootserver ", strlen("bootserver ")))
3219 /* no bootserver found */
3222 s = *pp + strlen("bootserver ");
3226 /* copy to addr string buffer */
3227 if (len >= sizeof(addrstr)) {
3228 connman_error("%s: Bad server\n", __func__);
3231 memcpy(addrstr, s, len);
3232 addrstr[len] = '\0';
3234 err = inet_pton(AF_INET, addrstr, addr);
3236 connman_error("%s: Cannot convert to numeric addr \"%s\"\n",
3248 g_error_free(error);
3255 /* get interface out of which peer is reachable (IPv4 only) */
3256 static int get_peer_iface(struct in_addr *addr, char *ifname)
3258 struct ifaddrs *ifaddr, *ifa;
3259 struct sockaddr_in saddr, *ifsaddr;
3264 /* Obtain address(es) matching host/port */
3265 err = getifaddrs(&ifaddr);
3267 connman_error("%s: getifaddrs() failed %d (%s)\n",
3268 __func__, errno, strerror(errno));
3272 s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
3274 connman_error("%s: socket() failed %d (%s)\n",
3275 __func__, errno, strerror(errno));
3279 memset(&saddr, 0, sizeof(saddr));
3280 saddr.sin_family = AF_INET;
3281 saddr.sin_port = 0; /* any port */
3282 saddr.sin_addr = *addr;
3284 /* no need to bind, connect will select iface */
3285 err = connect(s, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in));
3287 connman_error("%s: connect() failed: %d (%s)\n",
3288 __func__, errno, strerror(errno));
3292 socklen = sizeof(saddr);
3293 err = getsockname(s, (struct sockaddr *)&saddr, &socklen);
3295 connman_error("%s: getsockname() failed: %d (%s)\n",
3296 __func__, errno, strerror(errno));
3301 for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
3305 /* only IPv4 address */
3306 if (ifa->ifa_addr->sa_family != AF_INET)
3309 ifsaddr = (struct sockaddr_in *)ifa->ifa_addr;
3311 /* match address? */
3312 if (ifsaddr->sin_addr.s_addr == saddr.sin_addr.s_addr)
3319 strcpy(ifname, ifa->ifa_name);
3325 freeifaddrs(ifaddr);
3330 bool __connman_inet_isrootnfs_device(const char *devname)
3332 struct in_addr addr;
3333 char ifname[IFNAMSIZ];
3335 return get_nfs_server_ip(NULL, NULL, &addr) == 0 &&
3336 get_peer_iface(&addr, ifname) == 0 &&
3337 strcmp(devname, ifname) == 0;
3340 char **__connman_inet_get_pnp_nameservers(const char *pnp_file)
3345 GError *error = NULL;
3347 char **pnpent = NULL;
3348 char **nameservers = NULL;
3351 pnp_file = "/proc/net/pnp";
3353 if (!g_file_test(pnp_file, G_FILE_TEST_EXISTS))
3356 if (!g_file_get_contents(pnp_file, &pnp, NULL, &error)) {
3357 connman_error("%s: Cannot read %s %s\n", __func__,
3358 pnp_file, error->message);
3362 /* split in entries (by newlines) */
3363 pnpent = g_strsplit(pnp, "\n", 0);
3365 connman_error("%s: Cannot split pnp \"%s\"\n", __func__,
3371 * Perform two passes to retreive a char ** array of
3372 * nameservers that are not 0.0.0.0
3374 * The first pass counts them, the second fills in the
3379 for (pass = 1; pass <= 2; pass++) {
3381 /* at the start of the second pass allocate */
3383 nameservers = g_new(char *, count + 1);
3386 for (pp = pnpent; *pp; pp++) {
3387 /* match 'nameserver ' at the start of each line */
3388 if (strncmp(*pp, "nameserver ", strlen("nameserver ")))
3391 /* compare it against 0.0.0.0 */
3392 s = *pp + strlen("nameserver ");
3393 if (!strcmp(s, "0.0.0.0"))
3396 /* on second pass fill in array */
3398 nameservers[count] = g_strdup(s);
3402 /* no nameservers? */
3406 /* and terminate char ** array with NULL */
3408 nameservers[count] = NULL;
3416 g_error_free(error);