/* $NetBSD: ndp.c,v 1.2 1999/07/06 13:20:04 itojun Exp $ */ /* * Copyright (C) 1995, 1996, 1997, 1998, and 1999 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. */ /* * Copyright (c) 1984, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Sun Microsystems, Inc. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. */ /* * Based on: * "@(#) Copyright (c) 1984, 1993\n\ * The Regents of the University of California. All rights reserved.\n"; * * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; */ /* * ndp - display, set, delete and flush neighbor cache */ #include #include #include #include #include #include #include #if defined(__FreeBSD__) && __FreeBSD__ >= 3 #include #endif /* __FreeBSD__ >= 3 */ #include #include #include #include #ifndef __NetBSD__ #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "gmt2local.h" extern int errno; static int pid; static int fflag; static int nflag; static int tflag; static int32_t thiszone; /* time difference with gmt */ static int s = -1; static int repeat = 0; char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ int main __P((int, char **)); int file __P((char *)); void getsocket __P((void)); int set __P((int, char **)); void get __P((char *)); int delete __P((char *)); void dump __P((struct in6_addr *)); static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr, int ifindex)); static char *ether_str __P((struct sockaddr_dl *)); int ndp_ether_aton __P((char *, u_char *)); void usage __P((void)); int rtmsg __P((int)); void ifinfo __P((char *)); void rtrlist __P((void)); void plist __P((void)); void pfx_flush __P((void)); void rtr_flush __P((void)); void harmonize_rtr __P((void)); void quit __P((char *)); static char *sec2str __P((time_t t)); static char *ether_str __P((struct sockaddr_dl *sdl)); static void ts_print __P((const struct timeval *)); int main(argc, argv) int argc; char **argv; { int ch; int aflag = 0, cflag = 0, dflag = 0, sflag = 0, Hflag = 0, pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; extern char *optarg; extern int optind; pid = getpid(); thiszone = gmt2local(0); while ((ch = getopt(argc, argv, "acndfiprstA:HPR")) != EOF) switch ((char)ch) { case 'a': aflag = 1; break; case 'c': fflag = 1; cflag = 1; break; case 'd': dflag = 1; break; case 'i' : if (argc != 3) usage(); ifinfo(argv[2]); exit(0); case 'n': nflag = 1; continue; case 'p': pflag = 1; break; case 'f' : if (argc != 3) usage(); file(argv[2]); exit(0); case 'r' : rflag = 1; break; case 's': sflag = 1; break; case 't': tflag = 1; break; case 'A': aflag = 1; repeat = atoi(optarg); if (repeat < 0) usage(); break; case 'H' : Hflag = 1; break; case 'P': Pflag = 1; break; case 'R': Rflag = 1; break; default: usage(); } argc -= optind; argv += optind; if (aflag || cflag) { dump(0); exit(0); } if (dflag) { if (argc != 1) usage(); delete(argv[0]); } if (pflag) { plist(); exit(0); } if (rflag) { rtrlist(); exit(0); } if (sflag) { if (argc < 2 || argc > 4) usage(); exit(set(argc, argv) ? 1 : 0); } if (Hflag) { harmonize_rtr(); exit(0); } if (Pflag) { pfx_flush(); exit(0); } if (Rflag) { rtr_flush(); exit(0); } if (argc != 1) usage(); get(argv[0]); exit(0); } /* * Process a file to set standard ndp entries */ int file(name) char *name; { FILE *fp; int i, retval; char line[100], arg[5][50], *args[5]; if ((fp = fopen(name, "r")) == NULL) { fprintf(stderr, "ndp: cannot open %s\n", name); exit(1); } args[0] = &arg[0][0]; args[1] = &arg[1][0]; args[2] = &arg[2][0]; args[3] = &arg[3][0]; args[4] = &arg[4][0]; retval = 0; while(fgets(line, 100, fp) != NULL) { i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], arg[3], arg[4]); if (i < 2) { fprintf(stderr, "ndp: bad line: %s\n", line); retval = 1; continue; } if (set(i, args)) retval = 1; } fclose(fp); return (retval); } void getsocket() { if (s < 0) { s = socket(PF_ROUTE, SOCK_RAW, 0); if (s < 0) { perror("ndp: socket"); exit(1); } } } struct sockaddr_in so_mask = {8, 0, 0, { 0xffffffff}}; struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; int expire_time, flags, found_entry; struct { struct rt_msghdr m_rtm; char m_space[512]; } m_rtmsg; /* * Set an individual neighbor cache entry */ int set(argc, argv) int argc; char **argv; { register struct sockaddr_in6 *sin = &sin_m; register struct sockaddr_dl *sdl; register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); struct addrinfo hints, *res; int gai_error; u_char *ea; char *host = argv[0], *eaddr = argv[1]; getsocket(); argc -= 2; argv += 2; sdl_m = blank_sdl; sin_m = blank_sin; bzero(&hints, sizeof(hints)); hints.ai_family = AF_INET6; gai_error = getaddrinfo(host, NULL, &hints, &res); if (gai_error) { fprintf(stderr, "ndp: %s: %s\n", host, gai_strerror(gai_error)); return 1; } sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; ea = (u_char *)LLADDR(&sdl_m); if (ndp_ether_aton(eaddr, ea) == 0) sdl_m.sdl_alen = 6; flags = expire_time = 0; while (argc-- > 0) { if (strncmp(argv[0], "temp", 4) == 0) { struct timeval time; gettimeofday(&time, 0); expire_time = time.tv_sec + 20 * 60; } argv++; } tryagain: if (rtmsg(RTM_GET) < 0) { perror(host); return (1); } sin = (struct sockaddr_in6 *)(rtm + 1); sdl = (struct sockaddr_dl *)(sin->sin6_len + (char *)sin); if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { if (sdl->sdl_family == AF_LINK && (rtm->rtm_flags & RTF_LLINFO) && !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: case IFT_ISO88024: case IFT_ISO88025: goto overwrite; } goto tryagain; } overwrite: if (sdl->sdl_family != AF_LINK) { printf("cannot intuit interface index and type for %s\n", host); return (1); } sdl_m.sdl_type = sdl->sdl_type; sdl_m.sdl_index = sdl->sdl_index; return (rtmsg(RTM_ADD)); } /* * Display an individual neighbor cache entry */ void get(host) char *host; { struct sockaddr_in6 *sin = &sin_m; struct addrinfo hints, *res; int gai_error; sin_m = blank_sin; bzero(&hints, sizeof(hints)); hints.ai_family = AF_INET6; gai_error = getaddrinfo(host, NULL, &hints, &res); if (gai_error) { fprintf(stderr, "ndp: %s: %s\n", host, gai_strerror(gai_error)); return; } sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; dump(&sin->sin6_addr); if (found_entry == 0) { printf("%s (%s) -- no entry\n", host, inet_ntop(AF_INET6, &sin->sin6_addr, ntop_buf, sizeof(ntop_buf))); exit(1); } } /* * Delete a neighbor cache entry */ int delete(host) char *host; { register struct sockaddr_in6 *sin = &sin_m; register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; struct sockaddr_dl *sdl; struct addrinfo hints, *res; int gai_error; getsocket(); sin_m = blank_sin; bzero(&hints, sizeof(hints)); hints.ai_family = AF_INET6; gai_error = getaddrinfo(host, NULL, &hints, &res); if (gai_error) { fprintf(stderr, "ndp: %s: %s\n", host, gai_strerror(gai_error)); return 1; } sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; /*tryagain:*/ if (rtmsg(RTM_GET) < 0) { perror(host); return (1); } sin = (struct sockaddr_in6 *)(rtm + 1); sdl = (struct sockaddr_dl *)(sin->sin6_len + (char *)sin); if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { if (sdl->sdl_family == AF_LINK && (rtm->rtm_flags & RTF_LLINFO) && !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: case IFT_ISO88024: case IFT_ISO88025: goto delete; } } delete: if (sdl->sdl_family != AF_LINK) { printf("cannot locate %s\n", host); return (1); } if (rtmsg(RTM_DELETE) == 0) printf("%s (%s) deleted\n", host, inet_ntop(AF_INET6, &sin->sin6_addr, ntop_buf, sizeof(ntop_buf))); return 0; } /* * Dump the entire neighbor cache */ void dump(addr) struct in6_addr *addr; { int mib[6]; size_t needed; char *host, *lim, *buf, *next; struct rt_msghdr *rtm; struct sockaddr_in6 *sin; struct sockaddr_dl *sdl; extern int h_errno; struct hostent *hp; struct in6_nbrinfo *nbi; struct timeval time; /* Print header */ if (!tflag) printf("%-29.29s %-18.18s %6.6s %-9.9s %2s %4s %4s\n", "Neighbor", "Linklayer Address", "Netif", "Expire", "St", "Flgs", "Prbs"); again:; mib[0] = CTL_NET; mib[1] = PF_ROUTE; mib[2] = 0; mib[3] = AF_INET6; mib[4] = NET_RT_FLAGS; mib[5] = RTF_LLINFO; if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) quit("route-sysctl-estimate"); if ((buf = malloc(needed)) == NULL) quit("malloc"); if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) quit("actual retrieval of routing table"); lim = buf + needed; for (next = buf; next < lim; next += rtm->rtm_msglen) { int isrouter = 0, prbs = 0; rtm = (struct rt_msghdr *)next; sin = (struct sockaddr_in6 *)(rtm + 1); sdl = (struct sockaddr_dl *)(sin + 1); if (addr) { if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) continue; found_entry = 1; } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) continue; if (fflag == 1) { delete((char *)inet_ntop(AF_INET6, &sin->sin6_addr, ntop_buf, sizeof(ntop_buf))); continue; } host = NULL; if (nflag == 0) { hp = gethostbyaddr((char *)&sin->sin6_addr, sizeof(struct in6_addr), AF_INET6); if (hp) host = hp->h_name; } if (host == NULL) { inet_ntop(AF_INET6, &sin->sin6_addr, ntop_buf, sizeof(ntop_buf)); host = ntop_buf; } gettimeofday(&time, 0); if (tflag) ts_print(&time); printf("%-29.29s %-18.18s %6.6s", host, ether_str(sdl), if_indextoname(sdl->sdl_index, ifix_buf)); /* Print neighbor discovery specific informations */ putchar(' '); nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index); if (nbi) { if (nbi->expire > time.tv_sec) { printf(" %-9.9s", sec2str(nbi->expire - time.tv_sec)); } else if (nbi->expire == 0) printf(" %-9.9s", "permanent"); else printf(" %-9.9s", "expired"); switch(nbi->state) { case ND6_LLINFO_NOSTATE: printf(" N"); break; case ND6_LLINFO_WAITDELETE: printf(" W"); break; case ND6_LLINFO_INCOMPLETE: printf(" I"); break; case ND6_LLINFO_REACHABLE: printf(" R"); break; case ND6_LLINFO_STALE: printf(" S"); break; case ND6_LLINFO_DELAY: printf(" D"); break; case ND6_LLINFO_PROBE: printf(" P"); break; default: printf(" ?"); break; } isrouter = nbi->isrouter; prbs = nbi->asked; } else { warnx("failed to get neighbor information"); printf(" "); } /* other flags */ putchar(' '); { u_char flgbuf[8], *p = flgbuf; flgbuf[0] = '\0'; if (isrouter) p += sprintf((char *)p, "R"); #ifndef RADISH if (rtm->rtm_addrs & RTA_NETMASK) { sin = (struct sockaddr_in6 *) (sdl->sdl_len + (char *)sdl); if (!IN6_IS_ADDR_ANY(&sin->sin6_addr)) p += sprintf((char *)p, "P"); if (sin->sin6_len != sizeof(struct sockaddr_in6)) p += sprintf((char *)p, "W"); } #endif /*RADISH*/ printf("%4s", flgbuf); } putchar(' '); if (prbs) printf("% 4d", prbs); printf("\n"); } if (repeat) { printf("\n"); sleep(repeat); goto again; } } static struct in6_nbrinfo * getnbrinfo(addr, ifindex) struct in6_addr *addr; int ifindex; { static struct in6_nbrinfo nbi; int s; if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) err(1, "socket"); bzero(&nbi, sizeof(nbi)); if_indextoname(ifindex, nbi.ifname); nbi.addr = *addr; if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { warn("ioctl"); close(s); return(NULL); } close(s); return(&nbi); } static char * ether_str(sdl) struct sockaddr_dl *sdl; { static char ebuf[32]; u_char *cp; if (sdl->sdl_alen) { cp = (u_char *)LLADDR(sdl); sprintf(ebuf, "%x:%x:%x:%x:%x:%x", cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); } else { sprintf(ebuf, "(incomplete)"); } return(ebuf); } int ndp_ether_aton(a, n) char *a; u_char *n; { int i, o[6]; i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], &o[3], &o[4], &o[5]); if (i != 6) { fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); return (1); } for (i=0; i<6; i++) n[i] = o[i]; return (0); } void usage() { printf("usage: ndp hostname\n"); printf(" ndp -a[nt]\n"); printf(" ndp [-nt] -A wait\n"); printf(" ndp -c[nt]\n"); printf(" ndp -d[nt] hostname\n"); printf(" ndp -f[nt] filename\n"); printf(" ndp -i interface\n"); printf(" ndp -p\n"); printf(" ndp -r\n"); printf(" ndp -s hostname ether_addr [temp]\n"); printf(" ndp -H\n"); printf(" ndp -P\n"); printf(" ndp -R\n"); exit(1); } int rtmsg(cmd) int cmd; { static int seq; int rlen; register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; register char *cp = m_rtmsg.m_space; register int l; errno = 0; if (cmd == RTM_DELETE) goto doit; bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); rtm->rtm_flags = flags; rtm->rtm_version = RTM_VERSION; switch (cmd) { default: fprintf(stderr, "ndp: internal wrong cmd\n"); exit(1); case RTM_ADD: rtm->rtm_addrs |= RTA_GATEWAY; rtm->rtm_rmx.rmx_expire = expire_time; rtm->rtm_inits = RTV_EXPIRE; rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); /* FALLTHROUGH */ case RTM_GET: rtm->rtm_addrs |= RTA_DST; } #define NEXTADDR(w, s) \ if (rtm->rtm_addrs & (w)) { \ bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} NEXTADDR(RTA_DST, sin_m); NEXTADDR(RTA_GATEWAY, sdl_m); NEXTADDR(RTA_NETMASK, so_mask); rtm->rtm_msglen = cp - (char *)&m_rtmsg; doit: l = rtm->rtm_msglen; rtm->rtm_seq = ++seq; rtm->rtm_type = cmd; if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { if (errno != ESRCH || cmd != RTM_DELETE) { perror("writing to routing socket"); return (-1); } } do { l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); if (l < 0) (void) fprintf(stderr, "ndp: read from routing socket: %s\n", strerror(errno)); return (0); } void ifinfo(ifname) char *ifname; { struct in6_ndireq nd; int s; if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { perror("ndp: socket"); exit(1); } bzero(&nd, sizeof(nd)); strcpy(nd.ifname, ifname); if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { perror("ioctl (SIOCGIFINFO_IN6)"); exit(1); } #define ND nd.ndi printf("linkmtu=%d", ND.linkmtu); printf(", curhlim=%d", ND.chlim); printf(", basereachable=%ds%dms", ND.basereachable / 1000, ND.basereachable % 1000); printf(", reachable=%ds", ND.reachable); printf(", retrans=%ds%dms\n", ND.retrans / 1000, ND.retrans % 1000); #undef ND close(s); } void rtrlist() { struct in6_drlist dr; int s, i; struct timeval time; if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { perror("ndp: socket"); exit(1); } bzero(&dr, sizeof(dr)); strcpy(dr.ifname, "lo0"); /* dummy */ if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { perror("ioctl (SIOCGDRLST_IN6)"); exit(1); } #define DR dr.defrouter[i] for (i = 0 ; DR.if_index && i < PRLSTSIZ ; i++) { printf("%s if=%s", inet_ntop(AF_INET6, &DR.rtaddr, ntop_buf, sizeof(ntop_buf)), if_indextoname(DR.if_index, ifix_buf)); printf(", flags=%s%s", DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); gettimeofday(&time, 0); if (DR.expire == 0) printf(", expire=Never\n"); else printf(", expire=%s\n", sec2str(DR.expire - time.tv_sec)); } #undef DR close(s); } void plist() { struct in6_prlist pr; int s, i; struct timeval time; gettimeofday(&time, 0); if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { perror("ndp: socket"); exit(1); } bzero(&pr, sizeof(pr)); strcpy(pr.ifname, "lo0"); /* dummy */ if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { perror("ioctl (SIOCGPRLST_IN6)"); exit(1); } #define PR pr.prefix[i] for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { printf("%s/%d if=%s\n", inet_ntop(AF_INET6, &PR.prefix, ntop_buf, sizeof(ntop_buf)), PR.prefixlen, if_indextoname(PR.if_index, ifix_buf)); gettimeofday(&time, 0); printf(" flags=%s%s", PR.raflags.onlink ? "L" : "", PR.raflags.autonomous ? "A" : ""); if (PR.vltime == ND6_INFINITE_LIFETIME) printf(" vltime=infinity"); else printf(" vltime=%ld", (long)PR.vltime); if (PR.pltime == ND6_INFINITE_LIFETIME) printf(", pltime=infinity"); else printf(", pltime=%ld", (long)PR.pltime); if (PR.expire == 0) printf(", expire=Never\n"); else if (PR.expire >= time.tv_sec) printf(", expire=%s\n", sec2str(PR.expire - time.tv_sec)); else printf(", expired\n"); if (PR.advrtrs) { int j; printf(" advertised by\n"); for (j = 0; j < PR.advrtrs; j++) { printf(" %s\n", inet_ntop(AF_INET6, &PR.advrtr[j], ntop_buf, sizeof(ntop_buf))); } if (PR.advrtrs > DRLSTSIZ) printf(" and %d routers\n", PR.advrtrs - DRLSTSIZ); } else printf(" No advertising router\n"); } #undef PR close(s); } void pfx_flush() { char dummyif[IFNAMSIZ+8]; int s; if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) err(1, "socket"); strcpy(dummyif, "lo0"); /* dummy */ if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); } void rtr_flush() { char dummyif[IFNAMSIZ+8]; int s; if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) err(1, "socket"); strcpy(dummyif, "lo0"); /* dummy */ if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); } void harmonize_rtr() { char dummyif[IFNAMSIZ+8]; int s; if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { perror("ndp: socket"); exit(1); } strcpy(dummyif, "lo0"); /* dummy */ if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) { perror("ioctl (SIOCSNDFLUSH_IN6)"); exit(1); } } void quit(msg) char *msg; { fprintf(stderr, "%s\n", msg); exit(1); } static char * sec2str(total) time_t total; { static char result[256]; int days, hours, mins, secs; int first = 1; char *p = result; days = total / 3600 / 24; hours = (total / 3600) % 24; mins = (total / 60) % 60; secs = total % 60; if (days) { first = 0; p += sprintf(p, "%dd", days); } if (!first || hours) { first = 0; p += sprintf(p, "%dh", hours); } if (!first || mins) { first = 0; p += sprintf(p, "%dm", mins); } sprintf(p, "%ds", secs); return(result); } /* * Print the timestamp * from tcpdump/util.c */ static void ts_print(tvp) const struct timeval *tvp; { int s; /* Default */ s = (tvp->tv_sec + thiszone) % 86400; (void)printf("%02d:%02d:%02d.%06u ", s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); }