1 files changed, 0 insertions, 580 deletions

diff --git a/usr.sbin/rtadvd/if.c b/usr.sbin/rtadvd/if.c
deleted file mode 100644
index d8ed088..0000000
--- a/usr.sbin/rtadvd/if.c
+++ /dev/null
@@ -1,580 +0,0 @@
-/*	$FreeBSD$	*/
-/*	$KAME: if.c,v 1.17 2001/01/21 15:27:30 itojun Exp $	*/
-
-/*
- * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
- * All rights reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the project nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- * 
- * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/sysctl.h>
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <net/if_types.h>
-#include <net/ethernet.h>
-#include <ifaddrs.h>
-#include <net/route.h>
-#include <net/if_dl.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-#include <unistd.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <syslog.h>
-#include "rtadvd.h"
-#include "if.h"
-
-#define ROUNDUP(a, size) \
-	(((a) & ((size)-1)) ? (1 + ((a) | ((size)-1))) : (a))
-
-#define NEXT_SA(ap) (ap) = (struct sockaddr *) \
-	((caddr_t)(ap) + ((ap)->sa_len ? ROUNDUP((ap)->sa_len,\
-						 sizeof(u_long)) :\
-			  			 sizeof(u_long)))
-
-struct if_msghdr **iflist;
-int iflist_init_ok;
-size_t ifblock_size;
-char *ifblock;
-
-static void get_iflist(char **buf, size_t *size);
-static void parse_iflist(struct if_msghdr ***ifmlist_p, char *buf,
-		       size_t bufsize);
-
-static void
-get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
-{
-	int i;
-	
-	for (i = 0; i < RTAX_MAX; i++) {
-		if (addrs & (1 << i)) {
-			rti_info[i] = sa;
-			NEXT_SA(sa);
-		}
-		else
-			rti_info[i] = NULL;
-	}
-}
-
-struct sockaddr_dl *
-if_nametosdl(char *name)
-{
-	int mib[6] = {CTL_NET, AF_ROUTE, 0, 0, NET_RT_IFLIST, 0};
-	char *buf, *next, *lim;
-	size_t len;
-	struct if_msghdr *ifm;
-	struct sockaddr *sa, *rti_info[RTAX_MAX];
-	struct sockaddr_dl *sdl = NULL, *ret_sdl;
-
-	if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0)
-		return(NULL);
-	if ((buf = malloc(len)) == NULL)
-		return(NULL);
-	if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
-		free(buf);
-		return(NULL);
-	}
-
-	lim = buf + len;
-	for (next = buf; next < lim; next += ifm->ifm_msglen) {
-		ifm = (struct if_msghdr *)next;
-		if (ifm->ifm_type == RTM_IFINFO) {
-			sa = (struct sockaddr *)(ifm + 1);
-			get_rtaddrs(ifm->ifm_addrs, sa, rti_info);
-			if ((sa = rti_info[RTAX_IFP]) != NULL) {
-				if (sa->sa_family == AF_LINK) {
-					sdl = (struct sockaddr_dl *)sa;
-					if (strlen(name) != sdl->sdl_nlen)
-						continue; /* not same len */
-					if (strncmp(&sdl->sdl_data[0],
-						    name,
-						    sdl->sdl_nlen) == 0) {
-						break;
-					}
-				}
-			}
-		}
-	}
-	if (next == lim) {
-		/* search failed */
-		free(buf);
-		return(NULL);
-	}
-
-	if ((ret_sdl = malloc(sdl->sdl_len)) == NULL)
-		goto end;
-	memcpy((caddr_t)ret_sdl, (caddr_t)sdl, sdl->sdl_len);
-
-end:
-	free(buf);
-	return(ret_sdl);
-}
-
-int
-if_getmtu(char *name)
-{
-	struct ifaddrs *ifap, *ifa;
-	struct if_data *ifd;
-	u_long mtu = 0;
-
-	if (getifaddrs(&ifap) < 0)
-		return(0);
-	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
-		if (strcmp(ifa->ifa_name, name) == 0) {
-			ifd = ifa->ifa_data;
-			if (ifd)
-				mtu = ifd->ifi_mtu;
-			break;
-		}
-	}
-	freeifaddrs(ifap);
-
-#ifdef SIOCGIFMTU		/* XXX: this ifdef may not be necessary */
-	if (mtu == 0) {
-		struct ifreq ifr;
-		int s;
-
-		if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
-			return(0);
-
-		ifr.ifr_addr.sa_family = AF_INET6;
-		strncpy(ifr.ifr_name, name,
-			sizeof(ifr.ifr_name));
-		if (ioctl(s, SIOCGIFMTU, (caddr_t)&ifr) < 0) {
-			close(s);
-			return(0);
-		}
-		close(s);
-
-		mtu = ifr.ifr_mtu;
-	}
-#endif
-
-	return(mtu);
-}
-
-/* give interface index and its old flags, then new flags returned */
-int
-if_getflags(int ifindex, int oifflags)
-{
-	struct ifreq ifr;
-	int s;
-
-	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
-		syslog(LOG_ERR, "<%s> socket: %s", __func__,
-		       strerror(errno));
-		return (oifflags & ~IFF_UP);
-	}
-
-	if_indextoname(ifindex, ifr.ifr_name);
-	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
-		syslog(LOG_ERR, "<%s> ioctl:SIOCGIFFLAGS: failed for %s",
-		       __func__, ifr.ifr_name);
-		close(s);
-		return (oifflags & ~IFF_UP);
-	}
-	close(s);
-	return (ifr.ifr_flags);
-}
-
-#define ROUNDUP8(a) (1 + (((a) - 1) | 7))
-int
-lladdropt_length(struct sockaddr_dl *sdl)
-{
-	switch (sdl->sdl_type) {
-	case IFT_ETHER:
-		return(ROUNDUP8(ETHER_ADDR_LEN + 2));
-	default:
-		return(0);
-	}
-}
-
-void
-lladdropt_fill(struct sockaddr_dl *sdl, struct nd_opt_hdr *ndopt)
-{
-	char *addr;
-
-	ndopt->nd_opt_type = ND_OPT_SOURCE_LINKADDR; /* fixed */
-
-	switch (sdl->sdl_type) {
-	case IFT_ETHER:
-		ndopt->nd_opt_len = (ROUNDUP8(ETHER_ADDR_LEN + 2)) >> 3;
-		addr = (char *)(ndopt + 1);
-		memcpy(addr, LLADDR(sdl), ETHER_ADDR_LEN);
-		break;
-	default:
-		syslog(LOG_ERR, "<%s> unsupported link type(%d)",
-		    __func__, sdl->sdl_type);
-		exit(1);
-	}
-
-	return;
-}
-
-int
-rtbuf_len()
-{
-	size_t len;
-
-	int mib[6] = {CTL_NET, AF_ROUTE, 0, AF_INET6, NET_RT_DUMP, 0};
-
-	if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0)
-		return(-1);
-
-	return(len);
-}
-
-#define FILTER_MATCH(type, filter) ((0x1 << type) & filter)
-#define SIN6(s) ((struct sockaddr_in6 *)(s))
-#define SDL(s) ((struct sockaddr_dl *)(s))
-char *
-get_next_msg(char *buf, char *lim, int ifindex, size_t *lenp, int filter)
-{
-	struct rt_msghdr *rtm;
-	struct ifa_msghdr *ifam;
-	struct sockaddr *sa, *dst, *gw, *ifa, *rti_info[RTAX_MAX];
-
-	*lenp = 0;
-	for (rtm = (struct rt_msghdr *)buf;
-	     rtm < (struct rt_msghdr *)lim;
-	     rtm = (struct rt_msghdr *)(((char *)rtm) + rtm->rtm_msglen)) {
-		/* just for safety */
-		if (!rtm->rtm_msglen) {
-			syslog(LOG_WARNING, "<%s> rtm_msglen is 0 "
-				"(buf=%p lim=%p rtm=%p)", __func__,
-				buf, lim, rtm);
-			break;
-		}
-		if (FILTER_MATCH(rtm->rtm_type, filter) == 0) {
-			continue;
-		}
-
-		switch (rtm->rtm_type) {
-		case RTM_GET:
-		case RTM_ADD:
-		case RTM_DELETE:
-			/* address related checks */
-			sa = (struct sockaddr *)(rtm + 1);
-			get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
-			if ((dst = rti_info[RTAX_DST]) == NULL ||
-			    dst->sa_family != AF_INET6)
-				continue;
-
-			if (IN6_IS_ADDR_LINKLOCAL(&SIN6(dst)->sin6_addr) ||
-			    IN6_IS_ADDR_MULTICAST(&SIN6(dst)->sin6_addr))
-				continue;
-
-			if ((gw = rti_info[RTAX_GATEWAY]) == NULL ||
-			    gw->sa_family != AF_LINK)
-				continue;
-			if (ifindex && SDL(gw)->sdl_index != ifindex)
-				continue;
-
-			if (rti_info[RTAX_NETMASK] == NULL)
-				continue;
-
-			/* found */
-			*lenp = rtm->rtm_msglen;
-			return (char *)rtm;
-			/* NOTREACHED */
-		case RTM_NEWADDR:
-		case RTM_DELADDR:
-			ifam = (struct ifa_msghdr *)rtm;
-
-			/* address related checks */
-			sa = (struct sockaddr *)(ifam + 1);
-			get_rtaddrs(ifam->ifam_addrs, sa, rti_info);
-			if ((ifa = rti_info[RTAX_IFA]) == NULL ||
-			    (ifa->sa_family != AF_INET &&
-			     ifa->sa_family != AF_INET6))
-				continue;
-
-			if (ifa->sa_family == AF_INET6 &&
-			    (IN6_IS_ADDR_LINKLOCAL(&SIN6(ifa)->sin6_addr) ||
-			     IN6_IS_ADDR_MULTICAST(&SIN6(ifa)->sin6_addr)))
-				continue;
-
-			if (ifindex && ifam->ifam_index != ifindex)
-				continue;
-
-			/* found */
-			*lenp = ifam->ifam_msglen;
-			return (char *)rtm;
-			/* NOTREACHED */
-		case RTM_IFINFO:
-			/* found */
-			*lenp = rtm->rtm_msglen;
-			return (char *)rtm;
-			/* NOTREACHED */
-		}
-	}
-
-	return (char *)rtm;
-}
-#undef FILTER_MATCH
-
-struct in6_addr *
-get_addr(char *buf)
-{
-	struct rt_msghdr *rtm = (struct rt_msghdr *)buf;
-	struct sockaddr *sa, *rti_info[RTAX_MAX];
-
-	sa = (struct sockaddr *)(rtm + 1);
-	get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
-
-	return(&SIN6(rti_info[RTAX_DST])->sin6_addr);
-}
-
-int
-get_rtm_ifindex(char *buf)
-{
-	struct rt_msghdr *rtm = (struct rt_msghdr *)buf;
-	struct sockaddr *sa, *rti_info[RTAX_MAX];
-
-	sa = (struct sockaddr *)(rtm + 1);
-	get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
-
-	return(((struct sockaddr_dl *)rti_info[RTAX_GATEWAY])->sdl_index);
-}
-
-int
-get_ifm_ifindex(char *buf)
-{
-	struct if_msghdr *ifm = (struct if_msghdr *)buf;
-
-	return ((int)ifm->ifm_index);
-}
-
-int
-get_ifam_ifindex(char *buf)
-{
-	struct ifa_msghdr *ifam = (struct ifa_msghdr *)buf;
-
-	return ((int)ifam->ifam_index);
-}
-
-int
-get_ifm_flags(char *buf)
-{
-	struct if_msghdr *ifm = (struct if_msghdr *)buf;
-
-	return (ifm->ifm_flags);
-}
-
-int
-get_prefixlen(char *buf)
-{
-	struct rt_msghdr *rtm = (struct rt_msghdr *)buf;
-	struct sockaddr *sa, *rti_info[RTAX_MAX];
-	u_char *p, *lim;
-	
-	sa = (struct sockaddr *)(rtm + 1);
-	get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
-	sa = rti_info[RTAX_NETMASK];
-
-	p = (u_char *)(&SIN6(sa)->sin6_addr);
-	lim = (u_char *)sa + sa->sa_len;
-	return prefixlen(p, lim);
-}
-
-int
-prefixlen(u_char *p, u_char *lim)
-{
-	int masklen;
-
-	for (masklen = 0; p < lim; p++) {
-		switch (*p) {
-		case 0xff:
-			masklen += 8;
-			break;
-		case 0xfe:
-			masklen += 7;
-			break;
-		case 0xfc:
-			masklen += 6;
-			break;
-		case 0xf8:
-			masklen += 5;
-			break;
-		case 0xf0:
-			masklen += 4;
-			break;
-		case 0xe0:
-			masklen += 3;
-			break;
-		case 0xc0:
-			masklen += 2;
-			break;
-		case 0x80:
-			masklen += 1;
-			break;
-		case 0x00:
-			break;
-		default:
-			return(-1);
-		}
-	}
-
-	return(masklen);
-}
-
-int
-rtmsg_type(char *buf)
-{
-	struct rt_msghdr *rtm = (struct rt_msghdr *)buf;
-
-	return(rtm->rtm_type);
-}
-
-int
-rtmsg_len(char *buf)
-{
-	struct rt_msghdr *rtm = (struct rt_msghdr *)buf;
-
-	return(rtm->rtm_msglen);
-}
-
-int
-ifmsg_len(char *buf)
-{
-	struct if_msghdr *ifm = (struct if_msghdr *)buf;
-
-	return(ifm->ifm_msglen);
-}
-
-/*
- * alloc buffer and get if_msghdrs block from kernel,
- * and put them into the buffer
- */
-static void
-get_iflist(char **buf, size_t *size)
-{
-	int mib[6];
-
-	mib[0] = CTL_NET;
-	mib[1] = PF_ROUTE;
-	mib[2] = 0;
-	mib[3] = AF_INET6;
-	mib[4] = NET_RT_IFLIST;
-	mib[5] = 0;
-
-	if (sysctl(mib, 6, NULL, size, NULL, 0) < 0) {
-		syslog(LOG_ERR, "<%s> sysctl: iflist size get failed",
-		       __func__);
-		exit(1);
-	}
-	if ((*buf = malloc(*size)) == NULL) {
-		syslog(LOG_ERR, "<%s> malloc failed", __func__);
-		exit(1);
-	}
-	if (sysctl(mib, 6, *buf, size, NULL, 0) < 0) {
-		syslog(LOG_ERR, "<%s> sysctl: iflist get failed",
-		       __func__);
-		exit(1);
-	}
-	return;
-}
-
-/*
- * alloc buffer and parse if_msghdrs block passed as arg,
- * and init the buffer as list of pointers ot each of the if_msghdr.
- */
-static void
-parse_iflist(struct if_msghdr ***ifmlist_p, char *buf, size_t bufsize)
-{
-	int iflentry_size, malloc_size;
-	struct if_msghdr *ifm;
-	struct ifa_msghdr *ifam;
-	char *lim;
-
-	/*
-	 * Estimate least size of an iflist entry, to be obtained from kernel.
-	 * Should add sizeof(sockaddr) ??
-	 */
-	iflentry_size = sizeof(struct if_msghdr);
-	/* roughly estimate max list size of pointers to each if_msghdr */
-	malloc_size = (bufsize/iflentry_size) * sizeof(size_t);
-	if ((*ifmlist_p = (struct if_msghdr **)malloc(malloc_size)) == NULL) {
-		syslog(LOG_ERR, "<%s> malloc failed", __func__);
-		exit(1);
-	}
-
-	lim = buf + bufsize;
-	for (ifm = (struct if_msghdr *)buf; ifm < (struct if_msghdr *)lim;) {
-		if (ifm->ifm_msglen == 0) {
-			syslog(LOG_WARNING, "<%s> ifm_msglen is 0 "
-			       "(buf=%p lim=%p ifm=%p)", __func__,
-			       buf, lim, ifm);
-			return;
-		}
-
-		if (ifm->ifm_type == RTM_IFINFO) {
-			(*ifmlist_p)[ifm->ifm_index] = ifm;
-		} else {
-			syslog(LOG_ERR, "out of sync parsing NET_RT_IFLIST\n"
-			       "expected %d, got %d\n msglen = %d\n"
-			       "buf:%p, ifm:%p, lim:%p\n",
-			       RTM_IFINFO, ifm->ifm_type, ifm->ifm_msglen,
-			       buf, ifm, lim);
-			exit (1);
-		}
-		for (ifam = (struct ifa_msghdr *)
-			((char *)ifm + ifm->ifm_msglen);
-		     ifam < (struct ifa_msghdr *)lim;
-		     ifam = (struct ifa_msghdr *)
-		     	((char *)ifam + ifam->ifam_msglen)) {
-			/* just for safety */
-			if (!ifam->ifam_msglen) {
-				syslog(LOG_WARNING, "<%s> ifa_msglen is 0 "
-				       "(buf=%p lim=%p ifam=%p)", __func__,
-				       buf, lim, ifam);
-				return;
-			}
-			if (ifam->ifam_type != RTM_NEWADDR)
-				break;
-		}
-		ifm = (struct if_msghdr *)ifam;
-	}
-}
-
-void
-init_iflist()
-{
-	if (ifblock) {
-		free(ifblock);
-		ifblock_size = 0;
-	}
-	if (iflist)
-		free(iflist);
-	/* get iflist block from kernel */
-	get_iflist(&ifblock, &ifblock_size);
-
-	/* make list of pointers to each if_msghdr */
-	parse_iflist(&iflist, ifblock, ifblock_size);
-}