int sockunion_cmp(const union sockunion *su1, const union sockunion *su2)
{
if (su1->sa.sa_family > su2->sa.sa_family)
return 1;
if (su1->sa.sa_family < su2->sa.sa_family)
return -1;
if (su1->sa.sa_family == AF_INET) {
if (ntohl(sockunion2ip(su1)) == ntohl(sockunion2ip(su2)))
return 0;
if (ntohl(sockunion2ip(su1)) > ntohl(sockunion2ip(su2)))
return 1;
else
return -1;
}
if (su1->sa.sa_family == AF_INET6)
return in6addr_cmp(&su1->sin6.sin6_addr, &su2->sin6.sin6_addr);
return 0;
}
int
sockunion_cmp (union sockunion *su1, union sockunion *su2)
{
if (su1->sa.sa_family > su2->sa.sa_family)
return 1;
if (su1->sa.sa_family < su2->sa.sa_family)
return -1;
if (su1->sa.sa_family == AF_INET)
{
if (ntohl (su1->sin.sin_addr.s_addr) == ntohl (su2->sin.sin_addr.s_addr))
return 0;
if (ntohl (su1->sin.sin_addr.s_addr) > ntohl (su2->sin.sin_addr.s_addr))
return 1;
else
return -1;
}
#ifdef HAVE_IPV6
if (su1->sa.sa_family == AF_INET6)
return in6addr_cmp (&su1->sin6.sin6_addr, &su2->sin6.sin6_addr);
#endif /* HAVE_IPV6 */
return 0;
}
static int parse_echo_response6(struct host_entry *host_entry, char *packet, int len)
{
int records, i;
struct ipmp *ipmp;
struct ipmp_trailer *ipmp_trailer;
struct ipmp_pathrecord6 *pr;
char ctime_buf[26];
char addr_buf[INET6_ADDRSTRLEN];
char fs_buf[25];
struct ipmp_pathrecord6 *out = NULL, *there = NULL, *back = NULL;
int temp, max;
struct dns_entry *dns;
struct ipmptime t, t2;
long base_sec = tv_sec() & 0xffff0000;
time_t tt;
char *name;
char c;
struct in6_addr *in6;
/* get the offsets into the packet received */
ipmp = (struct ipmp *)packet;
pr = (struct ipmp_pathrecord6 *)(packet + sizeof(struct ipmp));
ipmp_trailer = (struct ipmp_trailer *)(packet + len - 4);
ipmp_trailer->path_pointer = ntohs(ipmp_trailer->path_pointer);
/* get the number of path records */
records = (ipmp_trailer->path_pointer - sizeof(struct ipmp))
/ sizeof(struct ipmp_pathrecord6);
/* get a pointer to the first timestamp so we can do a rtt calculation */
if(is_localaddress6(&pr->ip)) out = pr;
/* find out how many chars it is to represent the longest address */
if(!(options & OPT_NLANR))
{
if(records <= 0) return 1;
max = 0;
for(i=0; i<records; i++)
{
if(options & OPT_RESOLV && (dns=dnsentry_lookup6(&pr->ip)) != NULL)
{
temp = strlen(dns->name);
}
else
{
inet_ntop(AF_INET6, &pr->ip, addr_buf, sizeof(addr_buf));
temp = strlen(addr_buf);
}
if(temp > max) max = temp;
pr++;
}
pr--;
temp = ipv6_hlim - pr->hlim;
if(temp < 9) i = 1;
else if(temp < 99) i = 2;
else i = 3;
snprintf(fs_buf, sizeof(fs_buf), "%%c %%%dd %%%ds %%s %%9u\n", i, max);
pr = (struct ipmp_pathrecord6 *)(packet + sizeof(struct ipmp));
in6 = &((struct sockaddr_in6 *)host_entry->addr)->sin6_addr;
/* print the path records out */
for(i=0; i<records; i++)
{
t.sec = base_sec + ntohs(pr->sec);
t.nsec = ntohl(pr->nsec);
/* format the timestamp and remove the \n char from the end */
tt = (time_t)t.sec;
strncpy(ctime_buf, ctime(&tt), 24); ctime_buf[24] = '\0';
/* sort out the name we are going to show to the user */
if(options & OPT_RESOLV && (dns=dnsentry_lookup6(&pr->ip)) != NULL)
{
name = dns->name;
}
else
{
inet_ntop(AF_INET6, &pr->ip, addr_buf, sizeof(addr_buf));
name = addr_buf;
}
/*
* check to see if the address in this path record is either a
* local address or a target address. if it is, we want to show
* the user
*/
if(is_localaddress6(&pr->ip))
{
c = '*';
}
else if(in6addr_cmp(&pr->ip, in6) == 0)
{
c = '*';
there = pr;
}
else c = ' ';
printf(fs_buf, c, ipv6_hlim - pr->hlim, name, ctime_buf+4, t.nsec);
pr++;
}
pr--;
if(is_localaddress6(&pr->ip)) back = pr;
if(options & OPT_HOPS && there != NULL)
{
printf("forward path = ");
if(out != NULL) printf("%d", out->hlim - there->hlim);
else printf("?");
printf(" hops, reverse path = ");
if(back != NULL) printf("%d", there->hlim - back->hlim);
else printf("%d", there->hlim - host_entry->ttl);
printf(" hops\n");
}
/* calculate the RTT if we have been asked to */
if((options & OPT_RTT) && out != NULL && back != NULL)
{
t.sec = ntohs(out->sec); t.nsec = ntohl(out->nsec);
t2.sec = ntohs(back->sec); t2.nsec = ntohl(back->nsec);
if(t.sec > t2.sec) t2.sec += 0xffff;
printf("rtt: %sms\n", rtt(&t, &t2));
}
/* beep the pc speaker if we have been asked to */
if(options & OPT_AUDIBLE) printf("\a");
}
else
{
/*
* this output is the only stuff that the NLANR side (should) output to
* stdio, thus making the perl scripts that much simpler to write
*/
for(i=0; i<records-1; i++)
{
pr++;
}
if(is_localaddress6(&pr->ip))
{
back = pr;
t.sec = out->sec; t.nsec = out->nsec;
t2.sec = back->sec; t2.nsec = back->nsec;
if(t.sec > t2.sec) t2.sec += 0xffff;
printf("%s %s\n", host_entry->name, rtt(&t, &t2));
}
}
fflush(stdout);
return 1;
}