diff options
Diffstat (limited to 'sbin/ping6/ping6.c')
-rw-r--r-- | sbin/ping6/ping6.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/sbin/ping6/ping6.c b/sbin/ping6/ping6.c index 8c3e16b..01e29a1 100644 --- a/sbin/ping6/ping6.c +++ b/sbin/ping6/ping6.c @@ -287,7 +287,7 @@ void pr_retip(struct ip6_hdr *, u_char *); void summary(void); void tvsub(struct timeval *, struct timeval *); int setpolicy(int, char *); -char *nigroup(char *); +char *nigroup(char *, int); void usage(void); int @@ -306,6 +306,7 @@ main(int argc, char *argv[]) struct addrinfo hints; int cc, i; int ch, hold, packlen, preload, optval, ret_ga; + int nig_oldmcprefix = -1; u_char *datap; char *e, *target, *ifname = NULL, *gateway = NULL; int ip6optlen = 0; @@ -490,6 +491,7 @@ main(int argc, char *argv[]) break; case 'N': options |= F_NIGROUP; + nig_oldmcprefix++; break; case 'o': options |= F_ONCE; @@ -605,7 +607,7 @@ main(int argc, char *argv[]) } if (options & F_NIGROUP) { - target = nigroup(argv[argc - 1]); + target = nigroup(argv[argc - 1], nig_oldmcprefix); if (target == NULL) { usage(); /*NOTREACHED*/ @@ -2723,7 +2725,7 @@ setpolicy(int so __unused, char *policy) #endif char * -nigroup(char *name) +nigroup(char *name, int nig_oldmcprefix) { char *p; char *q; @@ -2733,6 +2735,7 @@ nigroup(char *name) size_t l; char hbuf[NI_MAXHOST]; struct in6_addr in6; + int valid; p = strchr(name, '.'); if (!p) @@ -2748,7 +2751,7 @@ nigroup(char *name) *q = tolower(*(unsigned char *)q); } - /* generate 8 bytes of pseudo-random value. */ + /* generate 16 bytes of pseudo-random value. */ memset(&ctxt, 0, sizeof(ctxt)); MD5Init(&ctxt); c = l & 0xff; @@ -2756,9 +2759,23 @@ nigroup(char *name) MD5Update(&ctxt, (unsigned char *)name, l); MD5Final(digest, &ctxt); - if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1) + if (nig_oldmcprefix) { + /* draft-ietf-ipngwg-icmp-name-lookup */ + valid = inet_pton(AF_INET6, "ff02::2:0000:0000", &in6); + } else { + /* RFC 4620 */ + valid = inet_pton(AF_INET6, "ff02::2:ff00:0000", &in6); + } + if (valid != 1) return NULL; /*XXX*/ - bcopy(digest, &in6.s6_addr[12], 4); + + if (nig_oldmcprefix) { + /* draft-ietf-ipngwg-icmp-name-lookup */ + bcopy(digest, &in6.s6_addr[12], 4); + } else { + /* RFC 4620 */ + bcopy(digest, &in6.s6_addr[13], 3); + } if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL) return NULL; |