int conf_ifaddrs(FILE *output, char *ifname, int flags, int af)
{
struct ifaddrs *ifa, *ifap;
struct sockaddr_in *sin, *sinmask, *sindest;
struct sockaddr_in6 *sin6, *sin6mask, *sin6dest;
struct in6_ifreq ifr6;
int ippntd = 0;
if (getifaddrs(&ifap) != 0) {
printf("%% conf: getifaddrs failed: %s\n",
strerror(errno));
return(-1);
}
/*
* Cycle through getifaddrs for interfaces with our
* desired name that sport af or (AF_INET | AF_INET6).
* Print the IP and related information.
*/
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (strncmp(ifname, ifa->ifa_name, IFNAMSIZ))
continue;
switch (ifa->ifa_addr->sa_family) {
int s;
case AF_INET:
if (af != AF_INET && af != 0)
continue;
sin = (struct sockaddr_in *)ifa->ifa_addr;
if (sin->sin_addr.s_addr == INADDR_ANY)
continue;
sinmask = (struct sockaddr_in *)ifa->ifa_netmask;
if (flags & IFF_POINTOPOINT) {
sindest = (struct sockaddr_in *)ifa->ifa_dstaddr;
fprintf(output, " ip %s",
routename4(sin->sin_addr.s_addr));
fprintf(output, " %s", inet_ntoa(sindest->sin_addr));
} else if (flags & IFF_BROADCAST) {
sindest = (struct sockaddr_in *)ifa->ifa_broadaddr;
fprintf(output, " ip %s",
netname4(sin->sin_addr.s_addr, sinmask));
/*
* no reason to save the broadcast addr
* if it is standard (this should always
* be true unless someone has messed up their
* network or they are playing around...)
*/
if (ntohl(sindest->sin_addr.s_addr) !=
in4_brdaddr(sin->sin_addr.s_addr,
sinmask->sin_addr.s_addr))
fprintf(output, " %s",
inet_ntoa(sindest->sin_addr));
} else {
fprintf(output, " ip %s",
netname4(sin->sin_addr.s_addr, sinmask));
}
ippntd = 1;
break;
case AF_INET6:
if (af != AF_INET6 && af != 0)
continue;
sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
sin6mask = (struct sockaddr_in6 *)ifa->ifa_netmask;
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
continue;
if (!ipv6ll_db_compare(sin6, sin6mask, ifname))
continue;
in6_fillscopeid(sin6);
/* get address flags */
memset(&ifr6, 0, sizeof(ifr6));
strlcpy(ifr6.ifr_name, ifname, sizeof(ifr6.ifr_name));
memcpy(&ifr6.ifr_addr, &sin6, sizeof(ifr6.ifr_addr));
s = socket(PF_INET6, SOCK_DGRAM, 0);
if (s < 0)
printf("%% conf_ifaddrs: socket: %s\n",
strerror(errno));
if (ioctl(s, SIOCGIFAFLAG_IN6, (caddr_t)&ifr6) < 0) {
if (errno != EADDRNOTAVAIL)
printf("%% conf_ifaddrs: " \
"SIOCGIFAFLAG_IN6: %s\n",
strerror(errno));
} else {
/* skip autoconf addresses */
if (ifr6.ifr_ifru.ifru_flags6 & IN6_IFF_AUTOCONF)
continue;
}
if (flags & IFF_POINTOPOINT) {
fprintf(output, " ip %s", routename6(sin6));
sin6dest = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
in6_fillscopeid(sin6dest);
fprintf(output, " %s", routename6(sin6dest));
} else {
fprintf(output, " ip %s",
netname6(sin6, sin6mask));
}
ippntd = 1;
break;
default:
continue;
}
fprintf(output, "\n");
}
freeifaddrs(ifap);
return ippntd;
}
int conf_ifaddrs(FILE *output, char *ifname, int flags, int af)
{
struct ifaddrs *ifa, *ifap;
struct sockaddr_in *sin, *sinmask, *sindest;
struct sockaddr_in6 *sin6, *sin6mask, *sin6dest;
int ippntd = 0;
if (getifaddrs(&ifap) != 0) {
printf("%% conf: getifaddrs failed: %s\n",
strerror(errno));
return(-1);
}
/*
* Cycle through getifaddrs for interfaces with our
* desired name that sport AF_INET | AF_INET6. Print
* the IP and related information.
*/
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (strncmp(ifname, ifa->ifa_name, IFNAMSIZ))
continue;
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
if (af != AF_INET && af != 0)
continue;
sin = (struct sockaddr_in *)ifa->ifa_addr;
if (sin->sin_addr.s_addr == 0)
continue;
sinmask = (struct sockaddr_in *)ifa->ifa_netmask;
if (flags & IFF_POINTOPOINT) {
sindest = (struct sockaddr_in *)ifa->ifa_dstaddr;
fprintf(output, " ip %s",
routename4(sin->sin_addr.s_addr));
fprintf(output, " %s", inet_ntoa(sindest->sin_addr));
} else if (flags & IFF_BROADCAST) {
sindest = (struct sockaddr_in *)ifa->ifa_broadaddr;
fprintf(output, " ip %s",
netname4(sin->sin_addr.s_addr, sinmask));
/*
* no reason to save the broadcast addr
* if it is standard (this should always
* be true unless someone has messed up their
* network or they are playing around...)
*/
if (ntohl(sindest->sin_addr.s_addr) !=
in4_brdaddr(sin->sin_addr.s_addr,
sinmask->sin_addr.s_addr))
fprintf(output, " %s",
inet_ntoa(sindest->sin_addr));
} else {
fprintf(output, " ip %s",
netname4(sin->sin_addr.s_addr, sinmask));
}
ippntd = 1;
break;
case AF_INET6:
if (af != AF_INET6 && af != 0)
continue;
sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
sin6mask = (struct sockaddr_in6 *)ifa->ifa_netmask;
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
continue;
if (!ipv6ll_db_compare(sin6, sin6mask, ifname))
continue;
in6_fillscopeid(sin6);
if (flags & IFF_POINTOPOINT) {
fprintf(output, " ip %s", routename6(sin6));
sin6dest = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
in6_fillscopeid(sin6dest);
fprintf(output, " %s", routename6(sin6dest));
} else {
fprintf(output, " ip %s",
netname6(sin6, sin6mask));
}
ippntd = 1;
break;
default:
continue;
}
fprintf(output, "\n");
}
freeifaddrs(ifap);
return ippntd;
}
