Reload Subnets when getting a HUP signal and StrictSubnets is used.

src/net.c

@@ -489,6 +489,31 @@ int main_loop(void) {
 
 			last_config_check = now;
 
+			/* If StrictSubnet is set, expire deleted Subnets and read new ones in */
+
+			if(strictsubnets) {
+				subnet_t *subnet;
+
+				for(node = subnet_tree->head; node; node = node->next) {
+					subnet = node->data;
+					subnet->expires = 1;
+				}
+
+				load_all_subnets();
+
+				for(node = subnet_tree->head; node; node = next) {
+					next = node->next;
+					subnet = node->data;
+					if(subnet->expires == 1) {
+						send_del_subnet(broadcast, subnet);
+						subnet_del(subnet->owner, subnet);
+					} else if(subnet->expires == -1) {
+						send_add_subnet(broadcast, subnet);
+						subnet->expires = 0;
+					}
+				}
+			}
+
 			/* Try to make outgoing connections */
 			
 			try_outgoing_connections();

src/net.h

@@ -139,6 +139,7 @@ extern void terminate_connection(struct connection_t *, bool);
 extern void flush_queue(struct node_t *);
 extern bool read_rsa_public_key(struct connection_t *);
 extern void send_mtu_probe(struct node_t *);
+extern void load_all_subnets();
 
 #ifndef HAVE_MINGW
 #define closesocket(s) close(s)

src/net_setup.c

@@ -204,14 +204,14 @@ bool read_rsa_private_key(void) {
 /*
   Read Subnets from all host config files
 */
-static void load_all_subnets(void) {
+void load_all_subnets(void) {
 	DIR *dir;
 	struct dirent *ent;
 	char *dname;
 	char *fname;
 	avl_tree_t *config_tree;
 	config_t *cfg;
-	subnet_t *s;
+	subnet_t *s, *s2;
 	node_t *n;
 	bool result;
 
@@ -251,7 +251,11 @@ static void load_all_subnets(void) {
 			if(!get_config_subnet(cfg, &s))
 				continue;
 
-			subnet_add(n, s);
+			if((s2 = lookup_subnet(n, s))) {
+				s2->expires = -1;
+			} else {
+				subnet_add(n, s);
+			}
 		}
 
 		exit_configuration(&config_tree);

src/subnet.h

@@ -64,6 +64,8 @@ typedef struct subnet_t {
 
 #define MAXNETSTR 64
 
+extern avl_tree_t *subnet_tree;
+
 extern int subnet_compare(const struct subnet_t *, const struct subnet_t *);
 extern subnet_t *new_subnet(void) __attribute__ ((__malloc__));
 extern void free_subnet(subnet_t *);