Read nameservers from /etc/resolv.conf if none are specified

diff --git a/gresolv/gresolv.c b/gresolv/gresolv.c
index bab1810..afd0653 100644 (file)
--- a/gresolv/gresolv.c
+++ b/gresolv/gresolv.c
@@ -66,6 +66,8 @@ struct _GResolv {
        int index;
        GList *nameserver_list;
 
+       struct __res_state res;
+
        GResolvDebugFunc debug_func;
        gpointer debug_data;
 };
@@ -357,6 +359,8 @@ GResolv *g_resolv_new(int index)
        resolv->index = index;
        resolv->nameserver_list = NULL;
 
+       res_ninit(&resolv->res);
+
        return resolv;
 }
 
@@ -387,6 +391,8 @@ void g_resolv_unref(GResolv *resolv)
 
        flush_nameservers(resolv);
 
+       res_nclose(&resolv->res);
+
        g_free(resolv);
 }
 
@@ -451,6 +457,19 @@ guint g_resolv_lookup_hostname(GResolv *resolv, const char *hostname,
        if (resolv == NULL)
                return 0;
 
+       if (resolv->nameserver_list == NULL) {
+               int i;
+
+               for (i = 0; i < resolv->res.nscount; i++) {
+                       struct sockaddr_in *addr = &resolv->res.nsaddr_list[i];
+                       g_resolv_add_nameserver(resolv,
+                                       inet_ntoa(addr->sin_addr), 53, 0);
+               }
+
+               if (resolv->nameserver_list == NULL)
+                       g_resolv_add_nameserver(resolv, "127.0.0.1", 53, 0);
+       }
+
        query = g_try_new0(struct resolv_query, 1);
        if (query == NULL)
                return 0;