1 files changed, 57 insertions, 0 deletions
diff --git a/avahi-client/check-nss.c b/avahi-client/check-nss.c
new file mode 100644
index 0000000..0a933fa
--- /dev/null
+++ b/avahi-client/check-nss.c
@@ -0,0 +1,57 @@
+/* $Id$ */
+
+/***
+  This file is part of avahi.
+ 
+  avahi is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+ 
+  avahi is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+  Public License for more details.
+ 
+  You should have received a copy of the GNU Lesser General Public
+  License along with avahi; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_DLOPEN
+#include <dlfcn.h>
+#endif
+#include <stdlib.h>
+
+#include "client.h"
+
+int avahi_nss_support(void) {
+    int b = 0;
+    
+#ifdef HAVE_DLOPEN
+    static const char * const libs[] = {
+        "libnss_mdns.so.2",
+        "libnss_mdns4.so.2",
+        "libnss_mdns6.so.2",
+        NULL };
+    
+    const char * const *l;
+    
+    for (l = libs; *l; l++) {
+        void *dl;
+        
+        if ((dl = dlopen(*l, RTLD_LAZY))) {
+            b = 1;
+            dlclose(dl);
+            break;
+        }
+    }
+#endif
+
+    return b;
+}