Allow more configuration variables to be changed when reloading configuration.

In particular, Subnets may be added or removed from the local node on the fly.

diff --git a/src/net.c b/src/net.c
index 863dd76..1636808 100644 (file)
--- a/src/net.c
+++ b/src/net.c
@@ -276,6 +276,16 @@ int reload_configuration(void) {
                return EINVAL;
        }
 
+       read_config_options(config_tree, NULL);
+
+        xasprintf(&fname, "%s/hosts/%s", confbase, myself->name);
+        read_config_file(config_tree, fname);
+       free(fname);    
+
+       /* Parse some options that are allowed to be changed while tinc is running */
+
+       setup_myself_reloadable();
+
        /* Close connections to hosts that have a changed or deleted host config file */
        
        for(node = connection_tree->head; node; node = next) {
@@ -306,7 +316,6 @@ int reload_configuration(void) {
        if(strictsubnets) {
                subnet_t *subnet;
 
-
                for(node = subnet_tree->head; node; node = node->next) {
                        subnet = node->data;
                        subnet->expires = 1;
@@ -330,6 +339,48 @@ int reload_configuration(void) {
                                        subnet_update(subnet->owner, subnet, true);
                        }
                }
+       } else { /* Only read our own subnets back in */
+               subnet_t *subnet, *s2;
+
+               for(node = myself->subnet_tree->head; node; node = node->next) {
+                       subnet_t *subnet = node->data;
+                       logger(DEBUG_ALWAYS, LOG_DEBUG, "subnet %p expires %d\n", subnet, subnet->expires);
+                       if(!subnet->expires)
+                               subnet->expires = 1;
+               }
+
+               config_t *cfg = lookup_config(config_tree, "Subnet");
+
+               while(cfg) {
+                       if(!get_config_subnet(cfg, &subnet))
+                               continue;
+
+                       if((s2 = lookup_subnet(myself, subnet))) {
+                               logger(DEBUG_ALWAYS, LOG_DEBUG, "read subnet that already exists: %p expires %d\n", s2, s2->expires);
+                               if(s2->expires == 1)
+                                       s2->expires = 0;
+
+                               free_subnet(subnet);
+                       } else {
+                               logger(DEBUG_ALWAYS, LOG_DEBUG, "read new subnet %p", subnet);
+                               subnet_add(myself, subnet);
+                               send_add_subnet(everyone, subnet);
+                               subnet_update(myself, subnet, true);
+                       }
+
+                       cfg = lookup_config_next(config_tree, cfg);
+               }
+
+               for(node = myself->subnet_tree->head; node; node = next) {
+                       next = node->next;
+                       subnet_t *subnet = node->data;
+                       if(subnet->expires == 1) {
+                               logger(DEBUG_ALWAYS, LOG_DEBUG, "removed subnet %p", subnet);
+                               send_del_subnet(everyone, subnet);
+                               subnet_update(myself, subnet, false);
+                               subnet_del(myself, subnet);
+                       }
+               }
        }
 
        /* Try to make outgoing connections */