Run cfg validation (by modules) at cfg reload

cfg_reload.c

@@ -425,8 +425,12 @@ int reload_routing_script(void)
 		goto error;
 	}
 
-	/* TODO - trigger module's callbacks to check if the reload of this 
+	/* trigger module's validation functions to check if the reload of this 
 	 * new route set is "approved" */
+	if (!modules_validate_reload()) {
+		LM_ERR("routes validation by modules failed, abording\n");
+		goto error;
+	}
 
 	/* we do not need the cfg, so free it and restore previous set of routes */
 	sroutes = sr_bk;

sr_module.c

@@ -811,3 +811,23 @@ int start_module_procs(void)
 
 	return 0;
 }
+
+
+int modules_validate_reload(void)
+{
+	struct sr_module *m;
+	int ret = 1;
+
+	for( m=modules ; m ; m=m->next) {
+		if (m->exports->reload_ack_f==NULL)
+			continue;
+		if (!m->exports->reload_ack_f()) {
+			LM_ERR("module <%s> did not validated the cfg file\n",
+				m->exports->name);
+			ret = 0;
+		}
+	}
+
+	return ret;
+}
+

sr_module.h

@@ -256,5 +256,7 @@ int count_module_procs(int flags);
 /*! \brief Forks and starts the additional processes required by modules */
 int start_module_procs(void);
 
+/*! \brief Runs the reload validation function from all modules */
+int modules_validate_reload(void);
 
 #endif