* under the terms of the license (GNU LGPL) which comes with this package. */
#include "gras/Virtu/virtu_rl.h"
+#include <netdb.h> /* {end,set}hostent() gethostby{addr,name}() */
-/* A portable DNS resolver is a nightmare to do in a portable manner */
-/* the ADNS library is a good candidate for inclusion in the source tree, but
- * it would be a bit too much. We need a stripped down version of it, and it's
- * a bit too late for this tonight.
- *
- * Next time maybe ;)
- */
-const char *gras_os_myname(void) {
+/* A portable DNS resolver is a nightmare to do in a portable manner.
+ keep it simple/stupid for now. */
- return "(unknown host)";
+const char *gras_os_myname(void) {
+ static char *myname = NULL;
+
+ if (myname)
+ return (const char*) myname;
+
+ myname = xbt_new(char, 255);
+
+ if (gethostname(myname, 255) == -1) {
+ /* gethostname() failed! Trying with localhost instead.
+ We first need to query the DNS to make sure localhost is resolved
+ See the note in nws/Portability/dnsutil.c about {end,set}hostent() */
+ struct hostent *tmp;
+ sethostent(0);
+ tmp = gethostbyname("localhost");
+ endhostent();
+
+ if (tmp) {
+ strncat(myname, tmp->h_name, 255);
+ } else {
+ /* Erm. localhost cannot be resolved. There's something wrong in the user DNS setting */
+ sprintf(myname, "(misconfigured host)");
+ }
+ }
+
+ myname[254] = '\0';
+
+ return myname;
}
