+static void handle_control_data(struct bufferevent *event, void *data) {
+ tinc_ctl_request_t req;
+ tinc_ctl_request_t res;
+ struct evbuffer *res_data = NULL;
+ void *req_data;
+
+ if(EVBUFFER_LENGTH(event->input) < sizeof req)
+ return;
+
+ /* Copy the structure to ensure alignment */
+ memcpy(&req, EVBUFFER_DATA(event->input), sizeof req);
+
+ if(EVBUFFER_LENGTH(event->input) < req.length)
+ return;
+ req_data = EVBUFFER_DATA(event->input) + sizeof req;
+
+ if(req.length < sizeof req)
+ goto failure;
+
+ memset(&res, 0, sizeof res);
+ res.type = req.type;
+ res.id = req.id;
+
+ res_data = evbuffer_new();
+ if(res_data == NULL) {
+ res.res_errno = ENOMEM;
+ goto respond;
+ }
+
+ if(req.type == REQ_STOP) {
+ logger(LOG_NOTICE, "Got '%s' command", "stop");
+ event_loopexit(NULL);
+ goto respond;
+ }
+
+ if(req.type == REQ_DUMP_NODES) {
+ logger(LOG_NOTICE, "Got '%s' command", "dump nodes");
+ res.res_errno = dump_nodes(res_data);
+ goto respond;
+ }
+
+ if(req.type == REQ_DUMP_EDGES) {
+ logger(LOG_NOTICE, "Got '%s' command", "dump edges");
+ res.res_errno = dump_edges(res_data);
+ goto respond;
+ }
+
+ if(req.type == REQ_DUMP_SUBNETS) {
+ logger(LOG_NOTICE, "Got '%s' command", "dump subnets");
+ res.res_errno = dump_subnets(res_data);
+ goto respond;
+ }
+
+ if(req.type == REQ_DUMP_CONNECTIONS) {
+ logger(LOG_NOTICE, "Got '%s' command", "dump connections");
+ res.res_errno = dump_connections(res_data);
+ goto respond;
+ }
+
+ if(req.type == REQ_DUMP_GRAPH) {
+ logger(LOG_NOTICE, "Got '%s' command", "dump graph");
+ res.res_errno = dump_graph(res_data);
+ goto respond;
+ }
+
+ if(req.type == REQ_PURGE) {
+ logger(LOG_NOTICE, "Got '%s' command", "purge");
+ purge();
+ goto respond;
+ }
+
+ if(req.type == REQ_SET_DEBUG) {
+ debug_t new_debug_level;
+
+ logger(LOG_NOTICE, "Got '%s' command", "debug");
+ if(req.length != sizeof req + sizeof debug_level)
+ res.res_errno = EINVAL;
+ else {
+ memcpy(&new_debug_level, req_data, sizeof new_debug_level);
+ logger(LOG_NOTICE, "Changing debug level from %d to %d",
+ debug_level, new_debug_level);
+ if(evbuffer_add_printf(res_data,
+ "Changing debug level from %d to %d\n",
+ debug_level, new_debug_level) == -1)
+ res.res_errno = errno;
+ debug_level = new_debug_level;
+ }
+ goto respond;
+ }
+
+ if(req.type == REQ_RETRY) {
+ logger(LOG_NOTICE, "Got '%s' command", "retry");
+ retry();
+ goto respond;
+ }
+
+ if(req.type == REQ_RELOAD) {
+ logger(LOG_NOTICE, "Got '%s' command", "reload");
+ res.res_errno = reload_configuration();
+ goto respond;
+ }