control.c revision 1b4e6163bed546ca7f8ad186f3eabfebacc36bc1
#include <config.h>
#include <string.h>
#include <isc/app.h>
#include <isc/event.h>
#include <isc/mem.h>
#include <isc/util.h>
#include <isccc/alist.h>
#include <isccc/cc.h>
#include <isccc/result.h>
#include <named/control.h>
#include <named/log.h>
#include <named/server.h>
static isc_boolean_t
command_compare(const char *text, const char *command) {
if (strncasecmp(text, command, strlen(command)) == 0 &&
(text[strlen(command)] == 0 || text[strlen(command)] == ' '))
return (ISC_TRUE);
return (ISC_FALSE);
}
/*
* This is the function that is called to process an incoming command when a
* message is received. It is called once for each name/value pair in the
* message's object value list or something.
*/
isc_result_t
ns_control_docommand(isccc_sexpr_t *message) {
isccc_sexpr_t *data;
char *command;
isc_result_t result;
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);
}
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_DEBUG(1),
"received control channel command '%s'",
command);
/*
* Compare the 'command' parameter against all known control commands.
*/
if (command_compare(command, NS_COMMAND_RELOAD)) {
result = ns_server_reloadcommand(ns_g_server, command);
} else if (command_compare(command, NS_COMMAND_REFRESH)) {
result = ns_server_refreshcommand(ns_g_server, command);
} else if (command_compare(command, NS_COMMAND_HALT)) {
ns_server_flushonshutdown(ns_g_server, ISC_FALSE);
isc_app_shutdown();
result = ISC_R_SUCCESS;
} else if (command_compare(command, NS_COMMAND_STOP)) {
ns_server_flushonshutdown(ns_g_server, ISC_TRUE);
isc_app_shutdown();
result = ISC_R_SUCCESS;
} else if (command_compare(command, NS_COMMAND_RELOADCONFIG) ||
command_compare(command, NS_COMMAND_RELOADZONES)) {
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
"unimplemented channel command '%s'",
command);
result = ISC_R_NOTIMPLEMENTED;
} 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);
} else if (command_compare(command, NS_COMMAND_DUMPDB)) {
ns_server_dumpdb(ns_g_server);
result = ISC_R_SUCCESS;
} 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 {
isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
"unknown control channel command '%s'",
command);
result = ISC_R_NOTIMPLEMENTED;
}
return (result);
}