static void control_newconn (isc_task_t * task, isc_event_t * event)
{
isc_socket_newconnev_t *nevent = (isc_socket_newconnev_t *) event;
controllistener_t *listener = event->ev_arg;
isc_socket_t *sock;
isc_sockaddr_t peeraddr;
isc_result_t result;
UNUSED (task);
listener->listening = ISC_FALSE;
if (nevent->result != ISC_R_SUCCESS)
{
if (nevent->result == ISC_R_CANCELED)
{
shutdown_listener (listener);
goto cleanup;
}
goto restart;
}
sock = nevent->newsocket;
isc_socket_setname (sock, "control", NULL);
(void) isc_socket_getpeername (sock, &peeraddr);
if (listener->type == isc_sockettype_tcp && !address_ok (&peeraddr, listener->acl))
{
char socktext[ISC_SOCKADDR_FORMATSIZE];
isc_sockaddr_format (&peeraddr, socktext, sizeof (socktext));
isc_log_write (ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING, "rejected command channel message from %s", socktext);
isc_socket_detach (&sock);
goto restart;
}
result = newconnection (listener, sock);
if (result != ISC_R_SUCCESS)
{
char socktext[ISC_SOCKADDR_FORMATSIZE];
isc_sockaddr_format (&peeraddr, socktext, sizeof (socktext));
isc_log_write (ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
"dropped command channel from %s: %s", socktext, isc_result_totext (result));
isc_socket_detach (&sock);
goto restart;
}
restart:
control_next (listener);
cleanup:
isc_event_free (&event);
}
void
ns_statschannels_shutdown(ns_server_t *server) {
ns_statschannel_t *listener;
while ((listener = ISC_LIST_HEAD(server->statschannels)) != NULL) {
ISC_LIST_UNLINK(server->statschannels, listener, link);
shutdown_listener(listener);
}
}
static void controls_shutdown (ns_controls_t * controls)
{
controllistener_t *listener;
controllistener_t *next;
for (listener = ISC_LIST_HEAD (controls->listeners); listener != NULL; listener = next)
{
/*
* This is asynchronous. As listeners shut down, they will
* call their callbacks.
*/
next = ISC_LIST_NEXT (listener, link);
shutdown_listener (listener);
}
}
isc_result_t
ns_statschannels_configure(ns_server_t *server, const cfg_obj_t *config,
cfg_aclconfctx_t *aclconfctx)
{
ns_statschannel_t *listener, *listener_next;
ns_statschannellist_t new_listeners;
const cfg_obj_t *statschannellist = NULL;
const cfg_listelt_t *element, *element2;
char socktext[ISC_SOCKADDR_FORMATSIZE];
RUNTIME_CHECK(isc_once_do(&once, init_desc) == ISC_R_SUCCESS);
ISC_LIST_INIT(new_listeners);
/*
* Get the list of named.conf 'statistics-channels' statements.
*/
(void)cfg_map_get(config, "statistics-channels", &statschannellist);
/*
* Run through the new address/port list, noting sockets that are
* already being listened on and moving them to the new list.
*
* Identifying duplicate addr/port combinations is left to either
* the underlying config code, or to the bind attempt getting an
* address-in-use error.
*/
if (statschannellist != NULL) {
#ifndef HAVE_LIBXML2
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
"statistics-channels specified but not effective "
"due to missing XML library");
#endif
for (element = cfg_list_first(statschannellist);
element != NULL;
element = cfg_list_next(element)) {
const cfg_obj_t *statschannel;
const cfg_obj_t *listenercfg = NULL;
statschannel = cfg_listelt_value(element);
(void)cfg_map_get(statschannel, "inet",
&listenercfg);
if (listenercfg == NULL)
continue;
for (element2 = cfg_list_first(listenercfg);
element2 != NULL;
element2 = cfg_list_next(element2)) {
const cfg_obj_t *listen_params;
const cfg_obj_t *obj;
isc_sockaddr_t addr;
listen_params = cfg_listelt_value(element2);
obj = cfg_tuple_get(listen_params, "address");
addr = *cfg_obj_assockaddr(obj);
if (isc_sockaddr_getport(&addr) == 0)
isc_sockaddr_setport(&addr, NS_STATSCHANNEL_HTTPPORT);
isc_sockaddr_format(&addr, socktext,
sizeof(socktext));
isc_log_write(ns_g_lctx,
NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_SERVER,
ISC_LOG_DEBUG(9),
"processing statistics "
"channel %s",
socktext);
update_listener(server, &listener,
listen_params, config, &addr,
aclconfctx, socktext);
if (listener != NULL) {
/*
* Remove the listener from the old
* list, so it won't be shut down.
*/
ISC_LIST_UNLINK(server->statschannels,
listener, link);
} else {
/*
* This is a new listener.
*/
isc_result_t r;
r = add_listener(server, &listener,
listen_params, config,
&addr, aclconfctx,
socktext);
if (r != ISC_R_SUCCESS) {
cfg_obj_log(listen_params,
ns_g_lctx,
ISC_LOG_WARNING,
"couldn't allocate "
"statistics channel"
" %s: %s",
socktext,
isc_result_totext(r));
}
}
if (listener != NULL)
ISC_LIST_APPEND(new_listeners, listener,
link);
}
}
}
for (listener = ISC_LIST_HEAD(server->statschannels);
listener != NULL;
listener = listener_next) {
listener_next = ISC_LIST_NEXT(listener, link);
ISC_LIST_UNLINK(server->statschannels, listener, link);
shutdown_listener(listener);
}
ISC_LIST_APPENDLIST(server->statschannels, new_listeners, link);
return (ISC_R_SUCCESS);
}
