static void
get_addresses(const char *host, in_port_t port) {
isc_result_t result;
int found = 0, count;
if (*host == '/') {
result = isc_sockaddr_frompath(&serveraddrs[nserveraddrs],
host);
if (result == ISC_R_SUCCESS)
nserveraddrs++;
} else {
count = SERVERADDRS - nserveraddrs;
result = bind9_getaddresses(host, port,
&serveraddrs[nserveraddrs],
count, &found);
nserveraddrs += found;
}
if (result != ISC_R_SUCCESS)
fatal("couldn't get address for '%s': %s",
host, isc_result_totext(result));
INSIST(nserveraddrs > 0);
}
isc_result_t
ns_controls_configure(ns_controls_t *cp, const cfg_obj_t *config,
cfg_aclconfctx_t *aclconfctx)
{
controllistener_t *listener;
controllistenerlist_t new_listeners;
const cfg_obj_t *controlslist = NULL;
const cfg_listelt_t *element, *element2;
char socktext[ISC_SOCKADDR_FORMATSIZE];
ISC_LIST_INIT(new_listeners);
/*
* Get the list of named.conf 'controls' statements.
*/
(void)cfg_map_get(config, "controls", &controlslist);
/*
* Run through the new control channel 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 (controlslist != NULL) {
for (element = cfg_list_first(controlslist);
element != NULL;
element = cfg_list_next(element)) {
const cfg_obj_t *controls;
const cfg_obj_t *inetcontrols = NULL;
controls = cfg_listelt_value(element);
(void)cfg_map_get(controls, "inet", &inetcontrols);
if (inetcontrols == NULL)
continue;
for (element2 = cfg_list_first(inetcontrols);
element2 != NULL;
element2 = cfg_list_next(element2)) {
const cfg_obj_t *control;
const cfg_obj_t *obj;
isc_sockaddr_t addr;
/*
* The parser handles BIND 8 configuration file
* syntax, so it allows unix phrases as well
* inet phrases with no keys{} clause.
*/
control = cfg_listelt_value(element2);
obj = cfg_tuple_get(control, "address");
addr = *cfg_obj_assockaddr(obj);
if (isc_sockaddr_getport(&addr) == 0)
isc_sockaddr_setport(&addr,
NS_CONTROL_PORT);
isc_sockaddr_format(&addr, socktext,
sizeof(socktext));
isc_log_write(ns_g_lctx,
NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL,
ISC_LOG_DEBUG(9),
"processing control channel %s",
socktext);
update_listener(cp, &listener, control, config,
&addr, aclconfctx, socktext,
isc_sockettype_tcp);
if (listener != NULL)
/*
* Remove the listener from the old
* list, so it won't be shut down.
*/
ISC_LIST_UNLINK(cp->listeners,
listener, link);
else
/*
* This is a new listener.
*/
add_listener(cp, &listener, control,
config, &addr, aclconfctx,
socktext,
isc_sockettype_tcp);
if (listener != NULL)
ISC_LIST_APPEND(new_listeners,
listener, link);
}
}
for (element = cfg_list_first(controlslist);
element != NULL;
element = cfg_list_next(element)) {
const cfg_obj_t *controls;
const cfg_obj_t *unixcontrols = NULL;
controls = cfg_listelt_value(element);
(void)cfg_map_get(controls, "unix", &unixcontrols);
if (unixcontrols == NULL)
continue;
for (element2 = cfg_list_first(unixcontrols);
element2 != NULL;
element2 = cfg_list_next(element2)) {
const cfg_obj_t *control;
const cfg_obj_t *path;
isc_sockaddr_t addr;
isc_result_t result;
/*
* The parser handles BIND 8 configuration file
* syntax, so it allows unix phrases as well
* inet phrases with no keys{} clause.
*/
control = cfg_listelt_value(element2);
path = cfg_tuple_get(control, "path");
result = isc_sockaddr_frompath(&addr,
cfg_obj_asstring(path));
if (result != ISC_R_SUCCESS) {
isc_log_write(ns_g_lctx,
NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL,
ISC_LOG_DEBUG(9),
"control channel '%s': %s",
cfg_obj_asstring(path),
isc_result_totext(result));
continue;
}
isc_log_write(ns_g_lctx,
NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL,
ISC_LOG_DEBUG(9),
"processing control channel '%s'",
cfg_obj_asstring(path));
update_listener(cp, &listener, control, config,
&addr, aclconfctx,
cfg_obj_asstring(path),
isc_sockettype_unix);
if (listener != NULL)
/*
* Remove the listener from the old
* list, so it won't be shut down.
*/
ISC_LIST_UNLINK(cp->listeners,
listener, link);
else
/*
* This is a new listener.
*/
add_listener(cp, &listener, control,
config, &addr, aclconfctx,
cfg_obj_asstring(path),
isc_sockettype_unix);
if (listener != NULL)
ISC_LIST_APPEND(new_listeners,
listener, link);
}
}
} else {
int i;
for (i = 0; i < 2; i++) {
isc_sockaddr_t addr;
if (i == 0) {
struct in_addr localhost;
if (isc_net_probeipv4() != ISC_R_SUCCESS)
continue;
localhost.s_addr = htonl(INADDR_LOOPBACK);
isc_sockaddr_fromin(&addr, &localhost, 0);
} else {
if (isc_net_probeipv6() != ISC_R_SUCCESS)
continue;
isc_sockaddr_fromin6(&addr,
&in6addr_loopback, 0);
}
isc_sockaddr_setport(&addr, NS_CONTROL_PORT);
isc_sockaddr_format(&addr, socktext, sizeof(socktext));
update_listener(cp, &listener, NULL, NULL,
&addr, NULL, socktext,
isc_sockettype_tcp);
if (listener != NULL)
/*
* Remove the listener from the old
* list, so it won't be shut down.
*/
ISC_LIST_UNLINK(cp->listeners,
listener, link);
else
/*
* This is a new listener.
*/
add_listener(cp, &listener, NULL, NULL,
&addr, NULL, socktext,
isc_sockettype_tcp);
if (listener != NULL)
ISC_LIST_APPEND(new_listeners,
listener, link);
}
}
/*
* ns_control_shutdown() will stop whatever is on the global
* listeners list, which currently only has whatever sockaddrs
* were in the previous configuration (if any) that do not
* remain in the current configuration.
*/
controls_shutdown(cp);
/*
* Put all of the valid listeners on the listeners list.
* Anything already on listeners in the process of shutting
* down will be taken care of by listen_done().
*/
ISC_LIST_APPENDLIST(cp->listeners, new_listeners, link);
return (ISC_R_SUCCESS);
}
