static void
route_event(isc_task_t *task, isc_event_t *event) {
isc_socketevent_t *sevent = NULL;
ns_interfacemgr_t *mgr = NULL;
isc_region_t r;
isc_result_t result;
struct MSGHDR *rtm;
isc_boolean_t done = ISC_TRUE;
UNUSED(task);
REQUIRE(event->ev_type == ISC_SOCKEVENT_RECVDONE);
mgr = event->ev_arg;
sevent = (isc_socketevent_t *)event;
if (sevent->result != ISC_R_SUCCESS) {
if (sevent->result != ISC_R_CANCELED)
isc_log_write(IFMGR_COMMON_LOGARGS, ISC_LOG_ERROR,
"automatic interface scanning "
"terminated: %s",
isc_result_totext(sevent->result));
ns_interfacemgr_detach(&mgr);
isc_event_free(&event);
return;
}
rtm = (struct MSGHDR *)mgr->buf;
#ifdef RTM_VERSION
if (rtm->rtm_version != RTM_VERSION) {
isc_log_write(IFMGR_COMMON_LOGARGS, ISC_LOG_ERROR,
"automatic interface rescanning disabled: "
"rtm->rtm_version mismatch (%u != %u) "
"recompile required", rtm->rtm_version,
RTM_VERSION);
ns_interfacemgr_detach(&mgr);
isc_event_free(&event);
return;
}
#endif
switch (rtm->MSGTYPE) {
case RTM_NEWADDR:
case RTM_DELADDR:
if (mgr->route != NULL && ns_g_server->interface_auto)
ns_server_scan_interfaces(ns_g_server);
break;
default:
break;
}
LOCK(&mgr->lock);
if (mgr->route != NULL) {
/*
* Look for next route event.
*/
r.base = mgr->buf;
r.length = sizeof(mgr->buf);
result = isc_socket_recv(mgr->route, &r, 1, mgr->task,
route_event, mgr);
if (result == ISC_R_SUCCESS)
done = ISC_FALSE;
}
UNLOCK(&mgr->lock);
if (done)
ns_interfacemgr_detach(&mgr);
isc_event_free(&event);
return;
}
/*%
* This function is called to process the incoming command
* when a control channel message is received.
*/
isc_result_t
ns_control_docommand(isccc_sexpr_t *message, isc_buffer_t *text) {
isccc_sexpr_t *data;
char *command = NULL;
isc_result_t result;
int log_level;
#ifdef HAVE_LIBSCF
ns_smf_want_disable = 0;
#endif
data = isccc_alist_lookup(message, "_data");
if (data == NULL) {
/*
* No data section.
*/
return (ISC_R_FAILURE);
}
result = isccc_cc_lookupstring(data, "type", &command);
if (result != ISC_R_SUCCESS) {
/*
* We have no idea what this is.
*/
return (result);
}
/*
* Compare the 'command' parameter against all known control commands.
*/
if (command_compare(command, NS_COMMAND_NULL) ||
command_compare(command, NS_COMMAND_STATUS)) {
log_level = ISC_LOG_DEBUG(1);
} else {
log_level = ISC_LOG_INFO;
}
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, log_level,
"received control channel command '%s'",
command);
if (command_compare(command, NS_COMMAND_RELOAD)) {
result = ns_server_reloadcommand(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_RECONFIG)) {
result = ns_server_reconfigcommand(ns_g_server, command);
} else if (command_compare(command, NS_COMMAND_REFRESH)) {
result = ns_server_refreshcommand(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_RETRANSFER)) {
result = ns_server_retransfercommand(ns_g_server,
command, text);
} else if (command_compare(command, NS_COMMAND_HALT)) {
#ifdef HAVE_LIBSCF
/*
* If we are managed by smf(5), AND in chroot, then
* we cannot connect to the smf repository, so just
* return with an appropriate message back to rndc.
*/
if (ns_smf_got_instance == 1 && ns_smf_chroot == 1) {
result = ns_smf_add_message(text);
return (result);
}
/*
* If we are managed by smf(5) but not in chroot,
* try to disable ourselves the smf way.
*/
if (ns_smf_got_instance == 1 && ns_smf_chroot == 0)
ns_smf_want_disable = 1;
/*
* If ns_smf_got_instance = 0, ns_smf_chroot
* is not relevant and we fall through to
* isc_app_shutdown below.
*/
#endif
/* Do not flush master files */
ns_server_flushonshutdown(ns_g_server, ISC_FALSE);
ns_os_shutdownmsg(command, text);
isc_app_shutdown();
result = ISC_R_SUCCESS;
} else if (command_compare(command, NS_COMMAND_STOP)) {
/*
* "stop" is the same as "halt" except it does
* flush master files.
*/
#ifdef HAVE_LIBSCF
if (ns_smf_got_instance == 1 && ns_smf_chroot == 1) {
result = ns_smf_add_message(text);
return (result);
}
if (ns_smf_got_instance == 1 && ns_smf_chroot == 0)
ns_smf_want_disable = 1;
#endif
ns_server_flushonshutdown(ns_g_server, ISC_TRUE);
ns_os_shutdownmsg(command, text);
isc_app_shutdown();
result = ISC_R_SUCCESS;
} else if (command_compare(command, NS_COMMAND_DUMPSTATS)) {
result = ns_server_dumpstats(ns_g_server);
} else if (command_compare(command, NS_COMMAND_QUERYLOG)) {
result = ns_server_togglequerylog(ns_g_server, command);
} else if (command_compare(command, NS_COMMAND_DUMPDB)) {
ns_server_dumpdb(ns_g_server, command);
result = ISC_R_SUCCESS;
} else if (command_compare(command, NS_COMMAND_SECROOTS)) {
result = ns_server_dumpsecroots(ns_g_server, command);
} else if (command_compare(command, NS_COMMAND_TRACE)) {
result = ns_server_setdebuglevel(ns_g_server, command);
} else if (command_compare(command, NS_COMMAND_NOTRACE)) {
ns_g_debuglevel = 0;
isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
result = ISC_R_SUCCESS;
} else if (command_compare(command, NS_COMMAND_FLUSH)) {
result = ns_server_flushcache(ns_g_server, command);
} else if (command_compare(command, NS_COMMAND_FLUSHNAME)) {
result = ns_server_flushnode(ns_g_server, command, ISC_FALSE);
} else if (command_compare(command, NS_COMMAND_FLUSHTREE)) {
result = ns_server_flushnode(ns_g_server, command, ISC_TRUE);
} else if (command_compare(command, NS_COMMAND_STATUS)) {
result = ns_server_status(ns_g_server, text);
} else if (command_compare(command, NS_COMMAND_TSIGLIST)) {
result = ns_server_tsiglist(ns_g_server, text);
} else if (command_compare(command, NS_COMMAND_TSIGDELETE)) {
result = ns_server_tsigdelete(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_FREEZE)) {
result = ns_server_freeze(ns_g_server, ISC_TRUE, command,
text);
} else if (command_compare(command, NS_COMMAND_UNFREEZE) ||
command_compare(command, NS_COMMAND_THAW)) {
result = ns_server_freeze(ns_g_server, ISC_FALSE, command,
text);
} else if (command_compare(command, NS_COMMAND_SCAN)) {
result = ISC_R_SUCCESS;
ns_server_scan_interfaces(ns_g_server);
} else if (command_compare(command, NS_COMMAND_SYNC)) {
result = ns_server_sync(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_RECURSING)) {
result = ns_server_dumprecursing(ns_g_server);
} else if (command_compare(command, NS_COMMAND_TIMERPOKE)) {
result = ISC_R_SUCCESS;
isc_timermgr_poke(ns_g_timermgr);
} else if (command_compare(command, NS_COMMAND_NULL)) {
result = ISC_R_SUCCESS;
} else if (command_compare(command, NS_COMMAND_NOTIFY)) {
result = ns_server_notifycommand(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_VALIDATION)) {
result = ns_server_validation(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_SIGN) ||
command_compare(command, NS_COMMAND_LOADKEYS)) {
result = ns_server_rekey(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_ADDZONE)) {
result = ns_server_add_zone(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_DELZONE)) {
result = ns_server_del_zone(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_SIGNING)) {
result = ns_server_signing(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_ZONESTATUS)) {
result = ns_server_zonestatus(ns_g_server, command, text);
} else if (command_compare(command, NS_COMMAND_NTA)) {
result = ns_server_nta(ns_g_server, command, text);
} else {
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
"unknown control channel command '%s'",
command);
result = DNS_R_UNKNOWNCOMMAND;
}
return (result);
}