2 * Copyright (c) 2000 - 2002, 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 #ifdef HAVE_SYS_SOCKIO_H
47 #include <sys/sockio.h>
48 #endif /* HAVE_SYS_SOCKIO_H */
50 #ifdef HAVE_NETINET_IN6_VAR_H
51 #include <netinet/in6_var.h>
52 #endif /* HAVE_NETINET_IN6_VAR_H */
57 #define lifconf if_laddrconf
58 #define lifc_len iflc_len
59 #define lifc_buf iflc_buf
60 #define lifc_req iflc_req
62 #define lifreq if_laddrreq
63 #define lifr_addr iflr_addr
64 #define lifr_name iflr_name
65 #define lifr_dstaddr iflr_dstaddr
66 #define lifr_broadaddr iflr_broadaddr
67 #define lifr_flags iflr_flags
68 #define lifr_index iflr_index
74 * The linux - AF_NETLINK version of getifaddrs - from Usagi.
75 * Linux does not return v6 addresses from SIOCGIFCONF.
78 /* $USAGI: ifaddrs.c,v 1.18 2002/03/06 01:50:46 yoshfuji Exp $ */
80 /**************************************************************************
82 * Copyright (C)2000 Hideaki YOSHIFUJI, All Rights Reserved.
84 * Redistribution and use in source and binary forms, with or without
85 * modification, are permitted provided that the following conditions
87 * 1. Redistributions of source code must retain the above copyright
88 * notice, this list of conditions and the following disclaimer.
89 * 2. Redistributions in binary form must reproduce the above copyright
90 * notice, this list of conditions and the following disclaimer in the
91 * documentation and/or other materials provided with the distribution.
92 * 3. Neither the name of the author nor the names of its contributors
93 * may be used to endorse or promote products derived from this software
94 * without specific prior written permission.
96 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
97 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
98 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
99 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
100 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
101 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
102 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
103 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
104 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
105 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
117 #include <sys/socket.h>
118 #include <asm/types.h>
119 #include <linux/netlink.h>
120 #include <linux/rtnetlink.h>
121 #include <sys/types.h>
122 #include <sys/socket.h>
123 #include <sys/poll.h>
124 #include <netpacket/packet.h>
125 #include <net/ethernet.h> /* the L2 protocols */
128 #include <net/if_arp.h>
130 #include <netinet/in.h>
132 #define __set_errno(e) (errno = (e))
133 #define __close(fd) (close(fd))
135 #define ifa_broadaddr ifa_dstaddr
138 /* ====================================================================== */
140 struct nlmsg_list *nlm_next;
141 struct nlmsghdr *nlh;
146 struct rtmaddr_ifamap {
153 #ifdef HAVE_IFADDRS_IFA_ANYCAST
162 #ifdef HAVE_IFADDRS_IFA_ANYCAST
167 /* ====================================================================== */
169 ifa_sa_len(sa_family_t family, int len)
174 size = sizeof(struct sockaddr_in);
177 size = sizeof(struct sockaddr_in6);
180 size = (size_t)(((struct sockaddr_ll *)NULL)->sll_addr) + len;
181 if (size < sizeof(struct sockaddr_ll))
182 size = sizeof(struct sockaddr_ll);
185 size = (size_t)(((struct sockaddr *)NULL)->sa_data) + len;
186 if (size < sizeof(struct sockaddr))
187 size = sizeof(struct sockaddr);
194 ifa_make_sockaddr(sa_family_t family,
197 uint32_t scope, uint32_t scopeid)
199 if (sa == NULL) return;
202 memcpy(&((struct sockaddr_in*)sa)->sin_addr, (char *)p, len);
205 memcpy(&((struct sockaddr_in6*)sa)->sin6_addr, (char *)p, len);
206 if (IN6_IS_ADDR_LINKLOCAL(p) ||
207 IN6_IS_ADDR_MC_LINKLOCAL(p)){
208 ((struct sockaddr_in6*)sa)->sin6_scope_id = scopeid;
212 memcpy(((struct sockaddr_ll*)sa)->sll_addr, (char *)p, len);
213 ((struct sockaddr_ll*)sa)->sll_halen = len;
216 memcpy(sa->sa_data, p, len); /*XXX*/
219 sa->sa_family = family;
220 #ifdef HAVE_SOCKADDR_SA_LEN
221 sa->sa_len = ifa_sa_len(family, len);
226 static struct sockaddr *
227 ifa_make_sockaddr_mask(sa_family_t family,
233 uint32_t max_prefixlen = 0;
235 if (sa == NULL) return NULL;
238 memset(&((struct sockaddr_in*)sa)->sin_addr, 0, sizeof(((struct sockaddr_in*)sa)->sin_addr));
239 p = (char *)&((struct sockaddr_in*)sa)->sin_addr;
243 memset(&((struct sockaddr_in6*)sa)->sin6_addr, 0, sizeof(((struct sockaddr_in6*)sa)->sin6_addr));
244 p = (char *)&((struct sockaddr_in6*)sa)->sin6_addr;
245 #if 0 /* XXX: fill scope-id? */
246 if (IN6_IS_ADDR_LINKLOCAL(p) ||
247 IN6_IS_ADDR_MC_LINKLOCAL(p)){
248 ((struct sockaddr_in6*)sa)->sin6_scope_id = scopeid;
256 sa->sa_family = family;
257 #ifdef HAVE_SOCKADDR_SA_LEN
258 sa->sa_len = ifa_sa_len(family, len);
261 if (prefixlen > max_prefixlen)
262 prefixlen = max_prefixlen;
263 for (i=0; i<(prefixlen / 8); i++)
266 c <<= (8 - (prefixlen % 8));
273 /* ====================================================================== */
275 nl_sendreq(int sd, int request, int flags, int *seq)
277 char reqbuf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
278 NLMSG_ALIGN(sizeof(struct rtgenmsg))];
279 struct sockaddr_nl nladdr;
280 struct nlmsghdr *req_hdr;
281 struct rtgenmsg *req_msg;
282 time_t t = time(NULL);
285 memset(&reqbuf, 0, sizeof(reqbuf));
286 req_hdr = (struct nlmsghdr *)reqbuf;
287 req_msg = (struct rtgenmsg *)NLMSG_DATA(req_hdr);
288 req_hdr->nlmsg_len = NLMSG_LENGTH(sizeof(*req_msg));
289 req_hdr->nlmsg_type = request;
290 req_hdr->nlmsg_flags = flags | NLM_F_REQUEST;
291 req_hdr->nlmsg_pid = 0;
292 req_hdr->nlmsg_seq = t;
293 req_msg->rtgen_family = AF_UNSPEC;
294 memset(&nladdr, 0, sizeof(nladdr));
295 nladdr.nl_family = AF_NETLINK;
296 return (sendto(sd, (void *)req_hdr, req_hdr->nlmsg_len, 0,
297 (struct sockaddr *)&nladdr, sizeof(nladdr)));
301 nl_recvmsg(int sd, int request, int seq,
302 void *buf, size_t buflen,
306 struct iovec iov = { buf, buflen };
307 struct sockaddr_nl nladdr;
311 msg.msg_name = (void *)&nladdr;
312 msg.msg_namelen = sizeof(nladdr);
315 msg.msg_control = NULL;
316 msg.msg_controllen = 0;
318 read_len = recvmsg(sd, &msg, 0);
319 if ((read_len < 0 && errno == EINTR) || (msg.msg_flags & MSG_TRUNC))
321 if (flags) *flags = msg.msg_flags;
328 nl_getmsg(int sd, int request, int seq,
329 struct nlmsghdr **nlhp,
333 size_t bufsize = 65536, lastbufsize = 0;
335 int result = 0, read_size;
337 pid_t pid = getpid();
339 void *newbuff = realloc(buff, bufsize);
340 if (newbuff == NULL || bufsize < lastbufsize) {
345 result = read_size = nl_recvmsg(sd, request, seq, buff, bufsize, &msg_flags);
346 if (read_size < 0 || (msg_flags & MSG_TRUNC)){
347 lastbufsize = bufsize;
351 if (read_size == 0) break;
352 nh = (struct nlmsghdr *)buff;
353 for (nh = (struct nlmsghdr *)buff;
354 NLMSG_OK(nh, read_size);
355 nh = (struct nlmsghdr *)NLMSG_NEXT(nh, read_size)){
356 if (nh->nlmsg_pid != pid ||
357 nh->nlmsg_seq != seq)
359 if (nh->nlmsg_type == NLMSG_DONE){
363 if (nh->nlmsg_type == NLMSG_ERROR){
364 struct nlmsgerr *nlerr = (struct nlmsgerr *)NLMSG_DATA(nh);
366 if (nh->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr)))
369 __set_errno(-nlerr->error);
377 int saved_errno = errno;
379 __set_errno(saved_errno);
381 *nlhp = (struct nlmsghdr *)buff;
386 nl_getlist(int sd, int seq,
388 struct nlmsg_list **nlm_list,
389 struct nlmsg_list **nlm_end)
391 struct nlmsghdr *nlh = NULL;
397 status = nl_sendreq(sd, request, NLM_F_ROOT|NLM_F_MATCH, &seq);
401 seq = (int)time(NULL);
406 pfd.events = POLLIN | POLLPRI;
408 status = poll(&pfd, 1, 1000);
411 else if (status == 0) {
418 status = nl_getmsg(sd, request, seq, &nlh, &done);
422 struct nlmsg_list *nlm_next = (struct nlmsg_list *)malloc(sizeof(struct nlmsg_list));
423 if (nlm_next == NULL){
424 int saved_errno = errno;
426 __set_errno(saved_errno);
429 nlm_next->nlm_next = NULL;
430 nlm_next->nlh = (struct nlmsghdr *)nlh;
431 nlm_next->size = status;
433 if (*nlm_list == NULL){
434 *nlm_list = nlm_next;
437 (*nlm_end)->nlm_next = nlm_next;
443 return status >= 0 ? seq : status;
446 /* ---------------------------------------------------------------------- */
448 free_nlmsglist(struct nlmsg_list *nlm0)
450 struct nlmsg_list *nlm, *nlm_next;
455 for (nlm=nlm0; nlm; nlm=nlm_next){
458 nlm_next=nlm->nlm_next;
461 __set_errno(saved_errno);
465 free_data(void *data, void *ifdata)
467 int saved_errno = errno;
468 if (data != NULL) free(data);
469 if (ifdata != NULL) free(ifdata);
470 __set_errno(saved_errno);
473 /* ---------------------------------------------------------------------- */
477 int saved_errno = errno;
478 if (sd >= 0) __close(sd);
479 __set_errno(saved_errno);
482 /* ---------------------------------------------------------------------- */
486 struct sockaddr_nl nladdr;
489 sd = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
490 if (sd < 0) return -1;
491 memset(&nladdr, 0, sizeof(nladdr));
492 nladdr.nl_family = AF_NETLINK;
493 if (bind(sd, (struct sockaddr*)&nladdr, sizeof(nladdr)) < 0){
500 /* ====================================================================== */
501 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
502 rk_getifaddrs(struct ifaddrs **ifap)
505 struct nlmsg_list *nlmsg_list, *nlmsg_end, *nlm;
506 /* - - - - - - - - - - - - - - - */
508 size_t dlen, xlen, nlen;
509 uint32_t max_ifindex = 0;
511 pid_t pid = getpid();
514 int build ; /* 0 or 1 */
516 /* ---------------------------------- */
518 icnt = dlen = xlen = nlen = 0;
519 nlmsg_list = nlmsg_end = NULL;
524 /* ---------------------------------- */
525 /* open socket and bind */
530 /* ---------------------------------- */
532 if ((seq = nl_getlist(sd, 0, RTM_GETLINK,
533 &nlmsg_list, &nlmsg_end)) < 0){
534 free_nlmsglist(nlmsg_list);
538 if ((seq = nl_getlist(sd, seq+1, RTM_GETADDR,
539 &nlmsg_list, &nlmsg_end)) < 0){
540 free_nlmsglist(nlmsg_list);
545 /* ---------------------------------- */
546 /* Estimate size of result buffer and fill it */
547 for (build=0; build<=1; build++){
548 struct ifaddrs *ifl = NULL, *ifa = NULL;
549 struct nlmsghdr *nlh, *nlh0;
550 char *data = NULL, *xdata = NULL;
552 char *ifname = NULL, **iflist = NULL;
553 uint16_t *ifflist = NULL;
554 struct rtmaddr_ifamap ifamap;
558 NLMSG_ALIGN(sizeof(struct ifaddrs[icnt]))
559 + dlen + xlen + nlen);
560 ifa = (struct ifaddrs *)data;
562 NLMSG_ALIGN(sizeof(char *[max_ifindex+1]))
563 + NLMSG_ALIGN(sizeof(uint16_t [max_ifindex+1])));
565 *ifap = (ifdata != NULL) ? ifa : NULL;
567 free_data(data, ifdata);
571 if (data == NULL || ifdata == NULL){
572 free_data(data, ifdata);
577 data += NLMSG_ALIGN(sizeof(struct ifaddrs)) * icnt;
579 ifname = xdata + xlen;
581 ifflist = (uint16_t *)(((char *)iflist) + NLMSG_ALIGN(sizeof(char *[max_ifindex+1])));
584 for (nlm=nlmsg_list; nlm; nlm=nlm->nlm_next){
585 int nlmlen = nlm->size;
586 if (!(nlh0 = nlm->nlh))
589 NLMSG_OK(nlh, nlmlen);
590 nlh=NLMSG_NEXT(nlh,nlmlen)){
591 struct ifinfomsg *ifim = NULL;
592 struct ifaddrmsg *ifam = NULL;
595 size_t nlm_struct_size = 0;
596 sa_family_t nlm_family = 0;
597 uint32_t nlm_scope = 0, nlm_index = 0;
598 size_t sockaddr_size = 0;
599 uint32_t nlm_prefixlen = 0;
602 memset(&ifamap, 0, sizeof(ifamap));
604 /* check if the message is what we want */
605 if (nlh->nlmsg_pid != pid ||
606 nlh->nlmsg_seq != nlm->seq)
608 if (nlh->nlmsg_type == NLMSG_DONE){
611 switch (nlh->nlmsg_type){
613 ifim = (struct ifinfomsg *)NLMSG_DATA(nlh);
614 nlm_struct_size = sizeof(*ifim);
615 nlm_family = ifim->ifi_family;
617 nlm_index = ifim->ifi_index;
620 ifflist[nlm_index] = ifa->ifa_flags = ifim->ifi_flags;
623 ifam = (struct ifaddrmsg *)NLMSG_DATA(nlh);
624 nlm_struct_size = sizeof(*ifam);
625 nlm_family = ifam->ifa_family;
626 nlm_scope = ifam->ifa_scope;
627 nlm_index = ifam->ifa_index;
628 nlm_prefixlen = ifam->ifa_prefixlen;
630 ifa->ifa_flags = ifflist[nlm_index];
637 if (max_ifindex < nlm_index)
638 max_ifindex = nlm_index;
644 rtasize = NLMSG_PAYLOAD(nlh, nlmlen) - NLMSG_ALIGN(nlm_struct_size);
645 for (rta = (struct rtattr *)(((char *)NLMSG_DATA(nlh)) + NLMSG_ALIGN(nlm_struct_size));
646 RTA_OK(rta, rtasize);
647 rta = RTA_NEXT(rta, rtasize)){
648 struct sockaddr **sap = NULL;
649 void *rtadata = RTA_DATA(rta);
650 size_t rtapayload = RTA_PAYLOAD(rta);
653 switch(nlh->nlmsg_type){
655 switch(rta->rta_type){
659 sap = (rta->rta_type == IFLA_ADDRESS) ? &ifa->ifa_addr : &ifa->ifa_broadaddr;
660 *sap = (struct sockaddr *)data;
662 sa_len = ifa_sa_len(AF_PACKET, rtapayload);
663 if (rta->rta_type == IFLA_ADDRESS)
664 sockaddr_size = NLMSG_ALIGN(sa_len);
666 dlen += NLMSG_ALIGN(sa_len);
668 memset(*sap, 0, sa_len);
669 ifa_make_sockaddr(AF_PACKET, *sap, rtadata,rtapayload, 0,0);
670 ((struct sockaddr_ll *)*sap)->sll_ifindex = nlm_index;
671 ((struct sockaddr_ll *)*sap)->sll_hatype = ifim->ifi_type;
672 data += NLMSG_ALIGN(sa_len);
675 case IFLA_IFNAME:/* Name of Interface */
677 nlen += NLMSG_ALIGN(rtapayload + 1);
679 ifa->ifa_name = ifname;
680 if (iflist[nlm_index] == NULL)
681 iflist[nlm_index] = ifa->ifa_name;
682 strncpy(ifa->ifa_name, rtadata, rtapayload);
683 ifa->ifa_name[rtapayload] = '\0';
684 ifname += NLMSG_ALIGN(rtapayload + 1);
687 case IFLA_STATS:/* Statistics of Interface */
689 xlen += NLMSG_ALIGN(rtapayload);
691 ifa->ifa_data = xdata;
692 memcpy(ifa->ifa_data, rtadata, rtapayload);
693 xdata += NLMSG_ALIGN(rtapayload);
709 if (nlm_family == AF_PACKET) break;
710 switch(rta->rta_type){
712 ifamap.address = rtadata;
713 ifamap.address_len = rtapayload;
716 ifamap.local = rtadata;
717 ifamap.local_len = rtapayload;
720 ifamap.broadcast = rtadata;
721 ifamap.broadcast_len = rtapayload;
723 #ifdef HAVE_IFADDRS_IFA_ANYCAST
725 ifamap.anycast = rtadata;
726 ifamap.anycast_len = rtapayload;
731 nlen += NLMSG_ALIGN(rtapayload + 1);
733 ifa->ifa_name = ifname;
734 if (iflist[nlm_index] == NULL)
735 iflist[nlm_index] = ifname;
736 strncpy(ifa->ifa_name, rtadata, rtapayload);
737 ifa->ifa_name[rtapayload] = '\0';
738 ifname += NLMSG_ALIGN(rtapayload + 1);
750 if (nlh->nlmsg_type == RTM_NEWADDR &&
751 nlm_family != AF_PACKET) {
753 ifamap.local = ifamap.address;
754 ifamap.local_len = ifamap.address_len;
756 if (!ifamap.address) {
757 ifamap.address = ifamap.local;
758 ifamap.address_len = ifamap.local_len;
760 if (ifamap.address_len != ifamap.local_len ||
761 (ifamap.address != NULL &&
762 memcmp(ifamap.address, ifamap.local, ifamap.address_len))) {
763 /* p2p; address is peer and local is ours */
764 ifamap.broadcast = ifamap.address;
765 ifamap.broadcast_len = ifamap.address_len;
766 ifamap.address = ifamap.local;
767 ifamap.address_len = ifamap.local_len;
769 if (ifamap.address) {
771 sockaddr_size = NLMSG_ALIGN(ifa_sa_len(nlm_family,ifamap.address_len));
774 dlen += NLMSG_ALIGN(ifa_sa_len(nlm_family,ifamap.address_len));
776 ifa->ifa_addr = (struct sockaddr *)data;
777 ifa_make_sockaddr(nlm_family, ifa->ifa_addr, ifamap.address, ifamap.address_len,
778 nlm_scope, nlm_index);
779 data += NLMSG_ALIGN(ifa_sa_len(nlm_family, ifamap.address_len));
783 if (ifamap.netmask) {
785 dlen += NLMSG_ALIGN(ifa_sa_len(nlm_family,ifamap.netmask_len));
787 ifa->ifa_netmask = (struct sockaddr *)data;
788 ifa_make_sockaddr(nlm_family, ifa->ifa_netmask, ifamap.netmask, ifamap.netmask_len,
789 nlm_scope, nlm_index);
790 data += NLMSG_ALIGN(ifa_sa_len(nlm_family, ifamap.netmask_len));
794 if (ifamap.broadcast) {
796 dlen += NLMSG_ALIGN(ifa_sa_len(nlm_family,ifamap.broadcast_len));
798 ifa->ifa_broadaddr = (struct sockaddr *)data;
799 ifa_make_sockaddr(nlm_family, ifa->ifa_broadaddr, ifamap.broadcast, ifamap.broadcast_len,
800 nlm_scope, nlm_index);
801 data += NLMSG_ALIGN(ifa_sa_len(nlm_family, ifamap.broadcast_len));
804 #ifdef HAVE_IFADDRS_IFA_ANYCAST
805 if (ifamap.anycast) {
807 dlen += NLMSG_ALIGN(ifa_sa_len(nlm_family,ifamap.anycast_len));
809 ifa->ifa_anycast = (struct sockaddr *)data;
810 ifa_make_sockaddr(nlm_family, ifa->ifa_anyaddr, ifamap.anycast, ifamap.anycast_len,
811 nlm_scope, nlm_index);
812 data += NLMSG_ALIGN(ifa_sa_len(nlm_family, ifamap.anycast_len));
819 dlen += sockaddr_size;
823 if (ifa->ifa_name == NULL)
824 ifa->ifa_name = iflist[nlm_index];
827 ifa->ifa_addr->sa_family != AF_UNSPEC &&
828 ifa->ifa_addr->sa_family != AF_PACKET){
829 ifa->ifa_netmask = (struct sockaddr *)data;
830 ifa_make_sockaddr_mask(ifa->ifa_addr->sa_family, ifa->ifa_netmask, nlm_prefixlen);
832 data += sockaddr_size;
839 if (icnt == 0 && (dlen + nlen + xlen == 0)){
842 break; /* cannot found any addresses */
846 free_data(NULL, ifdata);
849 /* ---------------------------------- */
851 free_nlmsglist(nlmsg_list);
856 void ROKEN_LIB_FUNCTION
857 rk_freeifaddrs(struct ifaddrs *ifp)
859 /* AF_NETLINK method uses a single allocation for all interfaces */
863 #else /* !AF_NETLINK */
866 * The generic SIOCGIFCONF version.
870 getifaddrs2(struct ifaddrs **ifap,
871 int af, int siocgifconf, int siocgifflags,
878 struct ifconf ifconf;
881 struct sockaddr sa_zero;
883 struct ifaddrs *start = NULL, **end = &start;
887 memset (&sa_zero, 0, sizeof(sa_zero));
888 fd = socket(af, SOCK_DGRAM, 0);
894 buf = calloc(1, buf_size);
899 ifconf.ifc_len = buf_size;
900 ifconf.ifc_buf = buf;
903 * Solaris returns EINVAL when the buffer is too small.
905 if (ioctl (fd, siocgifconf, &ifconf) < 0 && errno != EINVAL) {
910 * Can the difference between a full and a overfull buf
914 if (ifconf.ifc_len < buf_size)
920 for (p = ifconf.ifc_buf;
921 p < ifconf.ifc_buf + ifconf.ifc_len;
927 ifr = (struct ifreq *)p;
931 salen = sizeof(struct sockaddr);
932 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
934 sz = max(sz, sizeof(ifr->ifr_name) + sa->sa_len);
938 sz = max(sz, sizeof(ifr->ifr_name) + SA_LEN(sa));
940 memset (&ifreq, 0, sizeof(ifreq));
941 memcpy (ifreq.ifr_name, ifr->ifr_name, sizeof(ifr->ifr_name));
943 if (ioctl(fd, siocgifflags, &ifreq) < 0) {
948 *end = malloc(sizeof(**end));
954 (*end)->ifa_next = NULL;
955 (*end)->ifa_name = strdup(ifr->ifr_name);
956 if ((*end)->ifa_name == NULL) {
960 (*end)->ifa_flags = ifreq.ifr_flags;
961 (*end)->ifa_addr = malloc(salen);
962 if ((*end)->ifa_addr == NULL) {
966 memcpy((*end)->ifa_addr, sa, salen);
967 (*end)->ifa_netmask = NULL;
970 /* fix these when we actually need them */
971 if(ifreq.ifr_flags & IFF_BROADCAST) {
972 (*end)->ifa_broadaddr = malloc(sizeof(ifr->ifr_broadaddr));
973 if ((*end)->ifa_broadaddr == NULL) {
977 memcpy((*end)->ifa_broadaddr, &ifr->ifr_broadaddr,
978 sizeof(ifr->ifr_broadaddr));
979 } else if(ifreq.ifr_flags & IFF_POINTOPOINT) {
980 (*end)->ifa_dstaddr = malloc(sizeof(ifr->ifr_dstaddr));
981 if ((*end)->ifa_dstaddr == NULL) {
985 memcpy((*end)->ifa_dstaddr, &ifr->ifr_dstaddr,
986 sizeof(ifr->ifr_dstaddr));
988 (*end)->ifa_dstaddr = NULL;
990 (*end)->ifa_dstaddr = NULL;
993 (*end)->ifa_data = NULL;
995 end = &(*end)->ifa_next;
1003 rk_freeifaddrs(start);
1010 #if defined(HAVE_IPV6) && defined(SIOCGLIFCONF) && defined(SIOCGLIFFLAGS)
1012 getlifaddrs2(struct ifaddrs **ifap,
1013 int af, int siocgifconf, int siocgifflags,
1020 struct lifconf ifconf;
1023 struct sockaddr sa_zero;
1025 struct ifaddrs *start = NULL, **end = &start;
1029 memset (&sa_zero, 0, sizeof(sa_zero));
1030 fd = socket(af, SOCK_DGRAM, 0);
1036 buf = calloc(1, buf_size);
1042 ifconf.lifc_family = af;
1043 ifconf.lifc_flags = 0;
1045 ifconf.lifc_len = buf_size;
1046 ifconf.lifc_buf = buf;
1049 * Solaris returns EINVAL when the buffer is too small.
1051 if (ioctl (fd, siocgifconf, &ifconf) < 0 && errno != EINVAL) {
1056 * Can the difference between a full and a overfull buf
1060 if (ifconf.lifc_len < buf_size)
1066 for (p = ifconf.lifc_buf;
1067 p < ifconf.lifc_buf + ifconf.lifc_len;
1069 struct lifreq ifreq;
1070 struct sockaddr_storage *sa;
1073 ifr = (struct lifreq *)p;
1074 sa = &ifr->lifr_addr;
1077 salen = sizeof(struct sockaddr_storage);
1078 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
1080 sz = max(sz, sizeof(ifr->ifr_name) + sa->sa_len);
1084 sz = max(sz, sizeof(ifr->ifr_name) + SA_LEN(sa));
1086 memset (&ifreq, 0, sizeof(ifreq));
1087 memcpy (ifreq.lifr_name, ifr->lifr_name, sizeof(ifr->lifr_name));
1089 if (ioctl(fd, siocgifflags, &ifreq) < 0) {
1094 *end = malloc(sizeof(**end));
1100 (*end)->ifa_next = NULL;
1101 (*end)->ifa_name = strdup(ifr->lifr_name);
1102 if ((*end)->ifa_name == NULL) {
1106 (*end)->ifa_flags = ifreq.lifr_flags;
1107 (*end)->ifa_addr = malloc(salen);
1108 if ((*end)->ifa_addr == NULL) {
1112 memcpy((*end)->ifa_addr, sa, salen);
1113 (*end)->ifa_netmask = NULL;
1116 /* fix these when we actually need them */
1117 if(ifreq.ifr_flags & IFF_BROADCAST) {
1118 (*end)->ifa_broadaddr = malloc(sizeof(ifr->ifr_broadaddr));
1119 if ((*end)->ifa_broadaddr == NULL) {
1123 memcpy((*end)->ifa_broadaddr, &ifr->ifr_broadaddr,
1124 sizeof(ifr->ifr_broadaddr));
1125 } else if(ifreq.ifr_flags & IFF_POINTOPOINT) {
1126 (*end)->ifa_dstaddr = malloc(sizeof(ifr->ifr_dstaddr));
1127 if ((*end)->ifa_dstaddr == NULL) {
1131 memcpy((*end)->ifa_dstaddr, &ifr->ifr_dstaddr,
1132 sizeof(ifr->ifr_dstaddr));
1134 (*end)->ifa_dstaddr = NULL;
1136 (*end)->ifa_dstaddr = NULL;
1139 (*end)->ifa_data = NULL;
1141 end = &(*end)->ifa_next;
1149 rk_freeifaddrs(start);
1155 #endif /* defined(HAVE_IPV6) && defined(SIOCGLIFCONF) && defined(SIOCGLIFFLAGS) */
1158 * Join two struct ifaddrs lists by appending supp to base.
1159 * Either may be NULL. The new list head (usually base) will be
1162 static struct ifaddrs *
1163 append_ifaddrs(struct ifaddrs *base, struct ifaddrs *supp) {
1170 while (base->ifa_next)
1171 base = base->ifa_next;
1173 base->ifa_next = supp;
1178 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
1179 rk_getifaddrs(struct ifaddrs **ifap)
1183 #if defined(AF_INET6) && defined(SIOCGIF6CONF) && defined(SIOCGIF6FLAGS)
1185 ret = getifaddrs2 (ifap, AF_INET6, SIOCGIF6CONF, SIOCGIF6FLAGS,
1186 sizeof(struct in6_ifreq));
1188 #if defined(HAVE_IPV6) && defined(SIOCGLIFCONF) && defined(SIOCGLIFFLAGS)
1189 /* Do IPv6 and IPv4 queries separately then join the result.
1191 * HP-UX only returns IPv6 addresses using SIOCGLIFCONF,
1192 * SIOCGIFCONF has to be used for IPv4 addresses. The result is then
1195 * Solaris needs particular care, because a SIOCGLIFCONF lookup using
1196 * AF_UNSPEC can fail in a Zone requiring an AF_INET lookup, so we just
1197 * do them separately the same as for HP-UX. See
1198 * http://repo.or.cz/w/heimdal.git/commitdiff/76afc31e9ba2f37e64c70adc006ade9e37e9ef73
1202 struct ifaddrs *v6addrs, *v4addrs;
1204 v6err = getlifaddrs2 (&v6addrs, AF_INET6, SIOCGLIFCONF, SIOCGLIFFLAGS,
1205 sizeof(struct lifreq));
1206 v4err = getifaddrs2 (&v4addrs, AF_INET, SIOCGIFCONF, SIOCGIFFLAGS,
1207 sizeof(struct ifreq));
1215 *ifap = append_ifaddrs(v6addrs, v4addrs);
1218 } else if (v4addrs) {
1224 ret = (v6err || v4err) ? -1 : 0;
1227 #if defined(HAVE_IPV6) && defined(SIOCGIFCONF)
1229 ret = getifaddrs2 (ifap, AF_INET6, SIOCGIFCONF, SIOCGIFFLAGS,
1230 sizeof(struct ifreq));
1232 #if defined(AF_INET) && defined(SIOCGIFCONF) && defined(SIOCGIFFLAGS)
1234 ret = getifaddrs2 (ifap, AF_INET, SIOCGIFCONF, SIOCGIFFLAGS,
1235 sizeof(struct ifreq));
1240 ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
1241 rk_freeifaddrs(struct ifaddrs *ifp)
1243 struct ifaddrs *p, *q;
1250 free(p->ifa_dstaddr);
1252 free(p->ifa_netmask);
1261 #endif /* !AF_NETLINK */
1266 print_addr(const char *s, struct sockaddr *sa)
1269 printf(" %s=%d/", s, sa->sa_family);
1270 #ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
1271 for(i = 0; i < sa->sa_len - ((long)sa->sa_data - (long)&sa->sa_family); i++)
1272 printf("%02x", ((unsigned char*)sa->sa_data)[i]);
1274 for(i = 0; i < sizeof(sa->sa_data); i++)
1275 printf("%02x", ((unsigned char*)sa->sa_data)[i]);
1281 print_ifaddrs(struct ifaddrs *x)
1285 for(p = x; p; p = p->ifa_next) {
1286 printf("%s\n", p->ifa_name);
1287 printf(" flags=%x\n", p->ifa_flags);
1289 print_addr("addr", p->ifa_addr);
1291 print_addr("dstaddr", p->ifa_dstaddr);
1293 print_addr("netmask", p->ifa_netmask);
1294 printf(" %p\n", p->ifa_data);
1301 struct ifaddrs *a = NULL, *b;
1302 getifaddrs2(&a, AF_INET, SIOCGIFCONF, SIOCGIFFLAGS, sizeof(struct ifreq));