Limit number of upstream nameservers when logging configuration.

Makefile

@@ -24,7 +24,7 @@ MANDIR        = $(PREFIX)/share/man
 LOCALEDIR     = $(PREFIX)/share/locale
 BUILDDIR      = $(SRC)
 DESTDIR       = 
-CFLAGS        = -Wall -W -O0 -g
+CFLAGS        = -Wall -W -O2
 LDFLAGS       = 
 COPTS         = 
 RPM_OPT_FLAGS = 

src/config.h

@@ -24,6 +24,7 @@
 #define TIMEOUT 10 /* drop UDP queries after TIMEOUT seconds */
 #define FORWARD_TEST 50 /* try all servers every 50 queries */
 #define FORWARD_TIME 20 /* or 20 seconds */
+#define SERVERS_LOGGED 30 /* Only log this many servers when logging state */
 #define RANDOM_SOCKS 64 /* max simultaneous random ports */
 #define LEASE_RETRY 60 /* on error, retry writing leasefile after LEASE_RETRY seconds */
 #define CACHESIZ 150 /* default cache size */

src/dnsmasq.h

@@ -1406,8 +1406,8 @@ struct htree_node *domain_match(struct htree_node *root, char *domain);
 struct htree_node *domain_find_or_add(struct htree_node *root, char *domain);
 struct server *lookup_or_install_new_server(struct server *serv);
 void htree_free (struct htree_node *node);
-void print_server_special_domains(struct htree_node *node,
-                                  char *parents[], int current_level);
+void print_server_special_domains(struct htree_node *node, char *parents[],
+                                  int current_level, int *count);
 
 /* helper.c */
 #if defined(HAVE_SCRIPT)

src/htree.c

@@ -443,12 +443,11 @@ struct server *lookup_or_install_new_server(struct server *serv)
 }
 
 /* print the daemon->htree_special_domains tree recursively */
-void print_server_special_domains (struct htree_node *node,
-                                   char *parents[], int current_level)
+void print_server_special_domains (struct htree_node *node, char *parents[],
+                                   int current_level, int *count)
 {
   struct htree_node *np;
   struct special_domain *obj;
-  char buf[MAXDNAME];
   char ip_buf[ADDRSTRLEN];
   int j, level;
   int port = 0;
@@ -463,16 +462,19 @@ void print_server_special_domains (struct htree_node *node,
           obj = (struct special_domain *) node->ptr;
           if (obj->domain_flags & SERV_HAS_DOMAIN)
             {
-              memset (buf, 0, MAXDNAME);
-              for (j = level; j > 1; j--)
+              if ((*count)++ < SERVERS_LOGGED)
                 {
-                  strcat (buf, parents[j]);
-                  strcat (buf, ".");
+                  memset (buf, 0, MAXDNAME);
+                  for (j = level; j > 1; j--)
+                    {
+                      strcat (buf, parents[j]);
+                      strcat (buf, ".");
+                    }
+                  buf[strlen (buf) - 1] = '\0';
+                  port = prettyprint_addr (&obj->server->addr, ip_buf);
+                  my_syslog(LOG_INFO, _("using nameserver %s#%d for domain %s"),
+                                        ip_buf, port, buf);
                 }
-              buf[strlen (buf) - 1] = '\0';
-              port = prettyprint_addr (&obj->server->addr, ip_buf);
-              my_syslog(LOG_INFO, _("using nameserver %s#%d for domain %s"),
-                                    ip_buf, port, buf);
             }
         }
     }
@@ -481,6 +483,6 @@ void print_server_special_domains (struct htree_node *node,
     {
       for (i = 0; i < node->sub_size; i++)
         if ((np = node->sub[i]) != NULL)
-          print_server_special_domains (np, parents, level);
+          print_server_special_domains (np, parents, level, count);
     }
 }

src/network.c

@@ -1417,6 +1417,7 @@ void check_servers(void)
   struct irec *iface;
   struct server *serv;
   int port = 0;
+  int count = 0;
 
   /* interface may be new since startup */
   if (!option_bool(OPT_NOWILD))
@@ -1424,7 +1425,9 @@ void check_servers(void)
   
   char *levels[MAXLABELS + 1];  /* the root node starts at 1 */
   struct htree_node *root = daemon->htree_special_domains;
-  print_server_special_domains(root, levels, 0);
+  print_server_special_domains(root, levels, 0, &count);
+  if (count > SERVERS_LOGGED)
+    my_syslog(LOG_INFO, _("using %d more nameservers"), count - SERVERS_LOGGED);
 
   for (serv = daemon->servers; serv; serv = serv->next)
     {