#include <config.h>
#include "roken.h"
static int
doit (int af,
const void *addr,
size_t addrlen,
int port,
char *host, size_t hostlen,
char *serv, size_t servlen,
int flags)
{
if (host != NULL) {
if (flags & NI_NUMERICHOST) {
if (inet_ntop (af, addr, host, hostlen) == NULL)
return EAI_SYSTEM;
} else {
struct hostent *he = gethostbyaddr (addr,
addrlen,
af);
if (he != NULL) {
strlcpy (host, hostent_find_fqdn(he), hostlen);
if (flags & NI_NOFQDN) {
char *dot = strchr (host, '.');
if (dot != NULL)
*dot = '\0';
}
} else if (flags & NI_NAMEREQD) {
return EAI_NONAME;
} else if (inet_ntop (af, addr, host, hostlen) == NULL)
return EAI_SYSTEM;
}
}
if (serv != NULL) {
if (flags & NI_NUMERICSERV) {
snprintf (serv, servlen, "%u", ntohs(port));
} else {
const char *proto = "tcp";
struct servent *se;
if (flags & NI_DGRAM)
proto = "udp";
se = getservbyport (port, proto);
if (se == NULL) {
snprintf (serv, servlen, "%u", ntohs(port));
} else {
strlcpy (serv, se->s_name, servlen);
}
}
}
return 0;
}
ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
getnameinfo(const struct sockaddr *sa, socklen_t salen,
char *host, size_t hostlen,
char *serv, size_t servlen,
int flags)
{
switch (sa->sa_family) {
#ifdef HAVE_IPV6
case AF_INET6 : {
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
return doit (AF_INET6, &sin6->sin6_addr, sizeof(sin6->sin6_addr),
sin6->sin6_port,
host, hostlen,
serv, servlen,
flags);
}
#endif
case AF_INET : {
const struct sockaddr_in *sin4 = (const struct sockaddr_in *)sa;
return doit (AF_INET, &sin4->sin_addr, sizeof(sin4->sin_addr),
sin4->sin_port,
host, hostlen,
serv, servlen,
flags);
}
default :
return EAI_FAMILY;
}
}