gchar *
convert_hostname_to_fqdn(gchar *hostname, gsize hostname_len)
{
gchar *end;
/* we only change the hostname if domain_override is set. If it is unset,
* our best guess is what we got as input. */
if (local_domain_overridden)
convert_hostname_to_short_hostname(hostname, hostname_len);
if (local_domain_overridden ||
(!is_hostname_fqdn(hostname) && local_domain[0]))
{
end = hostname + strlen(hostname);
if (end < hostname + hostname_len)
{
*end = '.';
end++;
}
strncpy(end, local_domain, hostname_len - (end - hostname));
hostname[hostname_len - 1] = 0;
}
return hostname;
}
const gchar *
resolve_hostname_to_hostname(gsize *result_len, const gchar *hname, HostResolveOptions *host_resolve_options)
{
hname = bounce_to_hostname_buffer(hname);
if (host_resolve_options->use_fqdn)
convert_hostname_to_fqdn(hostname_buffer, sizeof(hostname_buffer));
else
convert_hostname_to_short_hostname(hostname_buffer, sizeof(hostname_buffer));
return hostname_apply_options(-1, result_len, hname, host_resolve_options);
}
static const gchar *
hostname_apply_options_fqdn(gssize result_len_orig, gsize *result_len, const gchar *hname, gboolean positive, const HostResolveOptions *host_resolve_options)
{
if (positive && !host_resolve_options->use_fqdn)
{
/* we only truncate hostnames if they were positive
* matches (e.g. real hostnames and not IP
* addresses) */
hname = bounce_to_hostname_buffer(hname);
convert_hostname_to_short_hostname(hostname_buffer, sizeof(hostname_buffer));
result_len_orig = -1;
}
return hostname_apply_options(result_len_orig, result_len, hname, host_resolve_options);
}
static void
detect_local_short_hostname(void)
{
g_strlcpy(local_hostname_short, local_hostname_fqdn, sizeof(local_hostname_short));
convert_hostname_to_short_hostname(local_hostname_short, sizeof(local_hostname_short));
}
