int main()
{
int err;
test_Title("AF_INET Streams");
err=CommInit(0); /* ensure a workable comms environment */
test(err==0);
IN_SET_LOOPBACK_ADDR(&testaddr);
testSimple();
test_Close();
return 0;
}
static int _confcheck()
{
int ns;
struct stat rc_stat;
struct sockaddr_in ns_sin;
/* First, we check to see if /etc/resolv.conf exists.
* If it doesn't, then localhost is mostlikely to be
* the nameserver.
*/
if (stat(_PATH_RESCONF, &rc_stat) == -1 && errno == ENOENT) {
/* Next, we check to see if _res.nsaddr is set to loopback.
* If it isn't, it has been altered by the application
* explicitly and we then want to bail with success.
*/
if (_res.nsaddr.sin_addr.S_un.S_addr == htonl(INADDR_LOOPBACK)) {
/* Lastly, we try to connect to the TCP port of the
* nameserver. If this fails, then we know that
* DNS is misconfigured and we can quickly exit.
*/
ns = socket(AF_INET, SOCK_STREAM, 0);
IN_SET_LOOPBACK_ADDR(&ns_sin);
ns_sin.sin_port = htons(NAMESERVER_PORT);
if (connect(ns, (struct sockaddr *) &ns_sin,
sizeof ns_sin) == -1) {
close(ns);
return(-1);
}
else {
close(ns);
return(0);
}
}
return(0);
}
return (0);
}
