1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
|
/*
* Copyright (C) 2004-2007, 2009-2013 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2001-2003 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id$ */
/*! \file */
#include <config.h>
#include <isc/app.h>
#include <isc/event.h>
#include <isc/mem.h>
#include <isc/string.h>
#include <isc/timer.h>
#include <isc/util.h>
#include <dns/result.h>
#include <isccc/alist.h>
#include <isccc/cc.h>
#include <isccc/result.h>
#include <named/control.h>
#include <named/log.h>
#include <named/os.h>
#include <named/server.h>
#ifdef HAVE_LIBSCF
#include <named/ns_smf_globals.h>
#endif
static isc_boolean_t
command_compare(const char *text, const char *command) {
unsigned int commandlen = strlen(command);
if (strncasecmp(text, command, commandlen) == 0 &&
(text[commandlen] == '\0' ||
text[commandlen] == ' ' ||
text[commandlen] == '\t'))
return (ISC_TRUE);
return (ISC_FALSE);
}
/*%
* 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_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);
} 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);
} 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 {
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);
}
|