remove gras from the main documentation

[simgrid.git] / src / gras / Virtu / rl_dns.c

diff --git a/src/gras/Virtu/rl_dns.c b/src/gras/Virtu/rl_dns.c
index 821a5a9..8e7f9e9 100644 (file)
--- a/src/gras/Virtu/rl_dns.c
+++ b/src/gras/Virtu/rl_dns.c
@@ -1,28 +1,27 @@
-/* $Id$ */
-
 /* rl_dns - name resolution (real life)                                     */
 
-/* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved.            */
+/* Copyright (c) 2005, 2009, 2010. The SimGrid Team.
+ * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * 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}() */
-#include <unistd.h> /* gethostname */
+#include "portable.h"
 
 /* A portable DNS resolver is a nightmare to do in a portable manner.
    keep it simple/stupid for now. */
 
-const char *gras_os_myname(void) {
-  static char *myname = NULL;
- 
-  if (myname)
-    return (const char*) myname; 
- 
-  myname = xbt_new(char, 255);
-    
+const char *gras_os_myname(void)
+{
+  static char myname[255];
+  static int initialized = 0;
+
+  if (initialized)
+    return myname;
+
   if (gethostname(myname, 255) == -1) {
+#ifdef HAVE_SYS_SOCKET_H
     /* 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() */
@@ -30,17 +29,20 @@ const char *gras_os_myname(void) {
     sethostent(0);
     tmp = gethostbyname("localhost");
     endhostent();
-       
+
     if (tmp) {
-      strncat(myname, tmp->h_name, 255);
-    } else {       
+      strncpy(myname, tmp->h_name, 255);
+    } else {
       /* Erm. localhost cannot be resolved. There's something wrong in the user DNS setting */
       sprintf(myname, "(misconfigured host)");
     }
+#else
+    sprintf(myname, "(misconfigured windows host)");
+#endif
   }
-   
+
   myname[254] = '\0';
- 
+
+  initialized = 1;
   return myname;
 }
-