2 * Copyright (C) 2004-2007, 2009 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2001-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: control.c,v 1.33.266.2 2009/07/11 23:47:17 tbox Exp $ */
26 #include <isc/event.h>
28 #include <isc/string.h>
29 #include <isc/timer.h>
32 #include <dns/result.h>
34 #include <isccc/alist.h>
36 #include <isccc/result.h>
38 #include <named/control.h>
39 #include <named/log.h>
41 #include <named/server.h>
43 #include <named/ns_smf_globals.h>
47 command_compare(const char *text, const char *command) {
48 unsigned int commandlen = strlen(command);
49 if (strncasecmp(text, command, commandlen) == 0 &&
50 (text[commandlen] == '\0' ||
51 text[commandlen] == ' ' ||
52 text[commandlen] == '\t'))
58 * This function is called to process the incoming command
59 * when a control channel message is received.
62 ns_control_docommand(isccc_sexpr_t *message, isc_buffer_t *text) {
68 ns_smf_want_disable = 0;
71 data = isccc_alist_lookup(message, "_data");
76 return (ISC_R_FAILURE);
79 result = isccc_cc_lookupstring(data, "type", &command);
80 if (result != ISC_R_SUCCESS) {
82 * We have no idea what this is.
88 * Compare the 'command' parameter against all known control commands.
90 if (command_compare(command, NS_COMMAND_NULL) ||
91 command_compare(command, NS_COMMAND_STATUS)) {
92 log_level = ISC_LOG_DEBUG(1);
94 log_level = ISC_LOG_INFO;
96 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
97 NS_LOGMODULE_CONTROL, log_level,
98 "received control channel command '%s'",
101 if (command_compare(command, NS_COMMAND_RELOAD)) {
102 result = ns_server_reloadcommand(ns_g_server, command, text);
103 } else if (command_compare(command, NS_COMMAND_RECONFIG)) {
104 result = ns_server_reconfigcommand(ns_g_server, command);
105 } else if (command_compare(command, NS_COMMAND_REFRESH)) {
106 result = ns_server_refreshcommand(ns_g_server, command, text);
107 } else if (command_compare(command, NS_COMMAND_RETRANSFER)) {
108 result = ns_server_retransfercommand(ns_g_server, command);
109 } else if (command_compare(command, NS_COMMAND_HALT)) {
112 * If we are managed by smf(5), AND in chroot, then
113 * we cannot connect to the smf repository, so just
114 * return with an appropriate message back to rndc.
116 if (ns_smf_got_instance == 1 && ns_smf_chroot == 1) {
117 result = ns_smf_add_message(text);
121 * If we are managed by smf(5) but not in chroot,
122 * try to disable ourselves the smf way.
124 if (ns_smf_got_instance == 1 && ns_smf_chroot == 0)
125 ns_smf_want_disable = 1;
127 * If ns_smf_got_instance = 0, ns_smf_chroot
128 * is not relevant and we fall through to
129 * isc_app_shutdown below.
132 ns_server_flushonshutdown(ns_g_server, ISC_FALSE);
133 ns_os_shutdownmsg(command, text);
135 result = ISC_R_SUCCESS;
136 } else if (command_compare(command, NS_COMMAND_STOP)) {
138 if (ns_smf_got_instance == 1 && ns_smf_chroot == 1) {
139 result = ns_smf_add_message(text);
142 if (ns_smf_got_instance == 1 && ns_smf_chroot == 0)
143 ns_smf_want_disable = 1;
145 ns_server_flushonshutdown(ns_g_server, ISC_TRUE);
146 ns_os_shutdownmsg(command, text);
148 result = ISC_R_SUCCESS;
149 } else if (command_compare(command, NS_COMMAND_DUMPSTATS)) {
150 result = ns_server_dumpstats(ns_g_server);
151 } else if (command_compare(command, NS_COMMAND_QUERYLOG)) {
152 result = ns_server_togglequerylog(ns_g_server);
153 } else if (command_compare(command, NS_COMMAND_DUMPDB)) {
154 ns_server_dumpdb(ns_g_server, command);
155 result = ISC_R_SUCCESS;
156 } else if (command_compare(command, NS_COMMAND_TRACE)) {
157 result = ns_server_setdebuglevel(ns_g_server, command);
158 } else if (command_compare(command, NS_COMMAND_NOTRACE)) {
160 isc_log_setdebuglevel(ns_g_lctx, ns_g_debuglevel);
161 result = ISC_R_SUCCESS;
162 } else if (command_compare(command, NS_COMMAND_FLUSH)) {
163 result = ns_server_flushcache(ns_g_server, command);
164 } else if (command_compare(command, NS_COMMAND_FLUSHNAME)) {
165 result = ns_server_flushname(ns_g_server, command);
166 } else if (command_compare(command, NS_COMMAND_STATUS)) {
167 result = ns_server_status(ns_g_server, text);
168 } else if (command_compare(command, NS_COMMAND_TSIGLIST)) {
169 result = ns_server_tsiglist(ns_g_server, text);
170 } else if (command_compare(command, NS_COMMAND_TSIGDELETE)) {
171 result = ns_server_tsigdelete(ns_g_server, command, text);
172 } else if (command_compare(command, NS_COMMAND_FREEZE)) {
173 result = ns_server_freeze(ns_g_server, ISC_TRUE, command,
175 } else if (command_compare(command, NS_COMMAND_UNFREEZE) ||
176 command_compare(command, NS_COMMAND_THAW)) {
177 result = ns_server_freeze(ns_g_server, ISC_FALSE, command,
179 } else if (command_compare(command, NS_COMMAND_RECURSING)) {
180 result = ns_server_dumprecursing(ns_g_server);
181 } else if (command_compare(command, NS_COMMAND_TIMERPOKE)) {
182 result = ISC_R_SUCCESS;
183 isc_timermgr_poke(ns_g_timermgr);
184 } else if (command_compare(command, NS_COMMAND_NULL)) {
185 result = ISC_R_SUCCESS;
186 } else if (command_compare(command, NS_COMMAND_NOTIFY)) {
187 result = ns_server_notifycommand(ns_g_server, command, text);
188 } else if (command_compare(command, NS_COMMAND_VALIDATION)) {
189 result = ns_server_validation(ns_g_server, command);
191 isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
192 NS_LOGMODULE_CONTROL, ISC_LOG_WARNING,
193 "unknown control channel command '%s'",
195 result = DNS_R_UNKNOWNCOMMAND;