diff options
| -rw-r--r-- | usr.sbin/rarpd/rarpd.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/usr.sbin/rarpd/rarpd.c b/usr.sbin/rarpd/rarpd.c index 4bf1157af80..a2e3e67453d 100644 --- a/usr.sbin/rarpd/rarpd.c +++ b/usr.sbin/rarpd/rarpd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: rarpd.c,v 1.25 1999/02/04 00:23:48 millert Exp $ */ +/* $OpenBSD: rarpd.c,v 1.26 1999/08/09 16:55:57 niklas Exp $ */ /* $NetBSD: rarpd.c,v 1.25 1998/04/23 02:48:33 mrg Exp $ */ /* @@ -28,7 +28,7 @@ char copyright[] = #endif /* not lint */ #ifndef lint -static char rcsid[] = "$OpenBSD: rarpd.c,v 1.25 1999/02/04 00:23:48 millert Exp $"; +static char rcsid[] = "$OpenBSD: rarpd.c,v 1.26 1999/08/09 16:55:57 niklas Exp $"; #endif @@ -242,6 +242,7 @@ init_all() char *inbuf = NULL, *ninbuf; struct ifconf ifc; struct ifreq *ifr; + struct sockaddr_dl *sdl; int fd, inlen = 8192; int i, len; @@ -263,7 +264,8 @@ init_all() if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0) { (void) close(fd); free(inbuf); - err(FATAL, "init_all: SIOCGIFCONF: %s", strerror(errno)); + err(FATAL, "init_all: SIOCGIFCONF: %s", + strerror(errno)); /* NOTREACHED */ } if (ifc.ifc_len + sizeof(*ifr) < inlen) @@ -278,6 +280,11 @@ init_all() (ifr->ifr_addr.sa_len > sizeof(struct sockaddr) ? ifr->ifr_addr.sa_len : sizeof(struct sockaddr)); + sdl = (struct sockaddr_dl *)&ifr->ifr_addr; + if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER || + sdl->sdl_alen != 6) + continue; + if (ioctl(fd, SIOCGIFFLAGS, (caddr_t)ifr) < 0) { free(inbuf); err(FATAL, "init_all: SIOCGIFFLAGS %s: %s", @@ -657,13 +664,15 @@ lookup_eaddr(ifname, eaddr) if (inbuf) free(inbuf); close(fd); - err(FATAL, "init_all: malloc: %s", strerror(errno)); + err(FATAL, "lookup_eaddr: malloc: %s", + strerror(errno)); } ifc.ifc_buf = inbuf = ninbuf; if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0) { (void) close(fd); free(inbuf); - err(FATAL, "init_all: SIOCGIFCONF: %s", strerror(errno)); + err(FATAL, "lookup_eaddr: SIOCGIFCONF: %s", + strerror(errno)); /* NOTREACHED */ } if (ifc.ifc_len + sizeof(*ifr) < inlen) @@ -674,7 +683,9 @@ lookup_eaddr(ifname, eaddr) ifr = ifc.ifc_req; for (i = 0; i < ifc.ifc_len; i += len, ifr = (struct ifreq *)((caddr_t)ifr + len)) { - len = sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len; + len = sizeof(ifr->ifr_name) + + (ifr->ifr_addr.sa_len > sizeof(struct sockaddr) ? + ifr->ifr_addr.sa_len : sizeof(struct sockaddr)); sdl = (struct sockaddr_dl *)&ifr->ifr_addr; if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER || sdl->sdl_alen != 6) |