static int
add_hostent (int port, int protocol, int socktype,
struct addrinfo ***current,
int (*func)(struct addrinfo *, void *data, int port),
struct hostent *he, int *flags)
{
int ret;
char *canonname = NULL;
char **h;
if (*flags & AI_CANONNAME) {
struct hostent *he2 = NULL;
const char *tmp_canon;
tmp_canon = hostent_find_fqdn (he);
if (strchr (tmp_canon, '.') == NULL) {
int error;
he2 = getipnodebyaddr (he->h_addr_list[0], he->h_length,
he->h_addrtype, &error);
if (he2 != NULL) {
const char *tmp = hostent_find_fqdn (he2);
if (strchr (tmp, '.') != NULL)
tmp_canon = tmp;
}
}
canonname = strdup (tmp_canon);
if (he2 != NULL)
freehostent (he2);
if (canonname == NULL)
return EAI_MEMORY;
}
for (h = he->h_addr_list; *h != NULL; ++h) {
ret = add_one (port, protocol, socktype,
current, func, *h, canonname);
if (ret)
return ret;
if (*flags & AI_CANONNAME) {
*flags &= ~AI_CANONNAME;
canonname = NULL;
}
}
return 0;
}
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;
}
