#include <stdio.h>
#include <string.h>
#if defined(__OpenBSD__)
-#include <sys/types.h>
-#include <sys/socket.h>
+ #include <sys/types.h>
+ #include <sys/socket.h>
#endif
#include "../util.h"
-const char *
-ipv4(const char *iface)
+static const char *
+ip(const char *iface, unsigned short sa_family)
{
struct ifaddrs *ifaddr, *ifa;
int s;
char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) < 0) {
- fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
+ warn("getifaddrs:");
return NULL;
}
if (!ifa->ifa_addr) {
continue;
}
- s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host,
- NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+ s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6),
+ host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if (!strcmp(ifa->ifa_name, iface) &&
- (ifa->ifa_addr->sa_family == AF_INET)) {
+ (ifa->ifa_addr->sa_family == sa_family)) {
+ freeifaddrs(ifaddr);
if (s != 0) {
- fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
+ warn("getnameinfo: %s", gai_strerror(s));
return NULL;
}
return bprintf("%s", host);
}
const char *
-ipv6(const char *iface)
+ipv4(const char *iface)
{
- struct ifaddrs *ifaddr, *ifa;
- int s;
- char host[NI_MAXHOST];
-
- if (getifaddrs(&ifaddr) < 0) {
- fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
- return NULL;
- }
-
- for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
- if (!ifa->ifa_addr) {
- continue;
- }
- s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6), host,
- NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
- if (!strcmp(ifa->ifa_name, iface) &&
- (ifa->ifa_addr->sa_family == AF_INET6)) {
- if (s != 0) {
- fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
- return NULL;
- }
- return bprintf("%s", host);
- }
- }
-
- freeifaddrs(ifaddr);
+ return ip(iface, AF_INET);
+}
- return NULL;
+const char *
+ipv6(const char *iface)
+{
+ return ip(iface, AF_INET6);
}