osmo-hlr/src/dgsm_vty.c

585 lines
20 KiB
C

/* Copyright 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <osmocom/vty/vty.h>
#include <osmocom/vty/command.h>
#include <osmocom/mslookup/mslookup_client_mdns.h>
#include <osmocom/mslookup/mdns.h>
#include <osmocom/hlr/hlr_vty.h>
#include <osmocom/hlr/mslookup_server.h>
#include <osmocom/hlr/mslookup_server_mdns.h>
#include <osmocom/gsupclient/cni_peer_id.h>
struct cmd_node mslookup_node = {
MSLOOKUP_NODE,
"%s(config-mslookup)# ",
1,
};
DEFUN(cfg_mslookup,
cfg_mslookup_cmd,
"mslookup",
"Configure Distributed GSM mslookup")
{
vty->node = MSLOOKUP_NODE;
return CMD_SUCCESS;
}
static int mslookup_server_mdns_bind(struct vty *vty, int argc, const char **argv)
{
const char *ip_str = argc > 0? argv[0] : g_hlr->mslookup.server.mdns.bind_addr.ip;
const char *port_str = argc > 1? argv[1] : NULL;
uint16_t port_nr = port_str ? atoi(port_str) : g_hlr->mslookup.server.mdns.bind_addr.port;
struct osmo_sockaddr_str addr;
if (osmo_sockaddr_str_from_str(&addr, ip_str, port_nr)
|| !osmo_sockaddr_str_is_nonzero(&addr)) {
vty_out(vty, "%% mslookup server: Invalid mDNS bind address: %s %u%s",
ip_str, port_nr, VTY_NEWLINE);
return CMD_WARNING;
}
g_hlr->mslookup.server.mdns.bind_addr = addr;
g_hlr->mslookup.server.mdns.enable = true;
g_hlr->mslookup.server.enable = true;
mslookup_server_mdns_config_apply();
return CMD_SUCCESS;
}
static int mslookup_client_mdns_to(struct vty *vty, int argc, const char **argv)
{
const char *ip_str = argc > 0? argv[0] : g_hlr->mslookup.client.mdns.query_addr.ip;
const char *port_str = argc > 1? argv[1] : NULL;
uint16_t port_nr = port_str ? atoi(port_str) : g_hlr->mslookup.client.mdns.query_addr.port;
struct osmo_sockaddr_str addr;
if (osmo_sockaddr_str_from_str(&addr, ip_str, port_nr)
|| !osmo_sockaddr_str_is_nonzero(&addr)) {
vty_out(vty, "%% mslookup client: Invalid mDNS target address: %s %u%s",
ip_str, port_nr, VTY_NEWLINE);
return CMD_WARNING;
}
g_hlr->mslookup.client.mdns.query_addr = addr;
g_hlr->mslookup.client.mdns.enable = true;
g_hlr->mslookup.client.enable = true;
dgsm_mdns_client_config_apply();
return CMD_SUCCESS;
}
#define MDNS_STR "Multicast DNS related configuration\n"
#define MDNS_IP46_STR "multicast IPv4 address like " OSMO_MSLOOKUP_MDNS_IP4 \
" or IPv6 address like " OSMO_MSLOOKUP_MDNS_IP6 "\n"
#define MDNS_PORT_STR "mDNS UDP Port number\n"
#define MDNS_DOMAIN_SUFFIX_STR "mDNS domain suffix (default: " OSMO_MDNS_DOMAIN_SUFFIX_DEFAULT "). This is appended" \
" and stripped from mDNS packets during encoding/decoding, so we don't collide with" \
" top-level domains administrated by IANA\n"
#define IP46_STR "IPv4 address like 1.2.3.4 or IPv6 address like a:b:c:d::1\n"
#define PORT_STR "Service-specific port number\n"
DEFUN(cfg_mslookup_mdns,
cfg_mslookup_mdns_cmd,
"mdns bind [IP] [<1-65535>]",
MDNS_STR
"Convenience shortcut: enable and configure both server and client for mDNS mslookup\n"
MDNS_IP46_STR MDNS_PORT_STR)
{
int rc1 = mslookup_server_mdns_bind(vty, argc, argv);
int rc2 = mslookup_client_mdns_to(vty, argc, argv);
if (rc1 != CMD_SUCCESS)
return rc1;
return rc2;
}
DEFUN(cfg_mslookup_mdns_domain_suffix,
cfg_mslookup_mdns_domain_suffix_cmd,
"mdns domain-suffix DOMAIN_SUFFIX",
MDNS_STR MDNS_DOMAIN_SUFFIX_STR MDNS_DOMAIN_SUFFIX_STR)
{
osmo_talloc_replace_string(g_hlr, &g_hlr->mslookup.server.mdns.domain_suffix, argv[0]);
osmo_talloc_replace_string(g_hlr, &g_hlr->mslookup.client.mdns.domain_suffix, argv[0]);
mslookup_server_mdns_config_apply();
dgsm_mdns_client_config_apply();
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_no_mdns,
cfg_mslookup_no_mdns_cmd,
"no mdns bind",
NO_STR "Disable both server and client for mDNS mslookup\n")
{
g_hlr->mslookup.server.mdns.enable = false;
g_hlr->mslookup.client.mdns.enable = false;
mslookup_server_mdns_config_apply();
dgsm_mdns_client_config_apply();
return CMD_SUCCESS;
}
struct cmd_node mslookup_server_node = {
MSLOOKUP_SERVER_NODE,
"%s(config-mslookup-server)# ",
1,
};
DEFUN(cfg_mslookup_server,
cfg_mslookup_server_cmd,
"server",
"Enable and configure Distributed GSM mslookup server")
{
vty->node = MSLOOKUP_SERVER_NODE;
g_hlr->mslookup.server.enable = true;
mslookup_server_mdns_config_apply();
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_no_server,
cfg_mslookup_no_server_cmd,
"no server",
NO_STR "Disable Distributed GSM mslookup server")
{
g_hlr->mslookup.server.enable = false;
mslookup_server_mdns_config_apply();
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_server_mdns_bind,
cfg_mslookup_server_mdns_bind_cmd,
"mdns bind [IP] [<1-65535>]",
MDNS_STR
"Configure where the mDNS server listens for mslookup requests\n"
MDNS_IP46_STR MDNS_PORT_STR)
{
return mslookup_server_mdns_bind(vty, argc, argv);
}
DEFUN(cfg_mslookup_server_mdns_domain_suffix,
cfg_mslookup_server_mdns_domain_suffix_cmd,
"mdns domain-suffix DOMAIN_SUFFIX",
MDNS_STR
MDNS_DOMAIN_SUFFIX_STR
MDNS_DOMAIN_SUFFIX_STR)
{
osmo_talloc_replace_string(g_hlr, &g_hlr->mslookup.server.mdns.domain_suffix, argv[0]);
mslookup_server_mdns_config_apply();
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_server_no_mdns_bind,
cfg_mslookup_server_no_mdns_bind_cmd,
"no mdns bind",
NO_STR "Disable server for mDNS mslookup (do not answer remote requests)\n")
{
g_hlr->mslookup.server.mdns.enable = false;
mslookup_server_mdns_config_apply();
return CMD_SUCCESS;
}
struct cmd_node mslookup_server_msc_node = {
MSLOOKUP_SERVER_MSC_NODE,
"%s(config-mslookup-server-msc)# ",
1,
};
DEFUN(cfg_mslookup_server_msc,
cfg_mslookup_server_msc_cmd,
"msc ipa-name .IPA_NAME",
"Configure services for individual local MSCs\n"
"Identify locally connected MSC by IPA Unit Name\n"
"IPA Unit Name of the local MSC to configure\n")
{
struct osmo_ipa_name msc_name;
struct mslookup_server_msc_cfg *msc;
osmo_ipa_name_set_str(&msc_name, argv_concat(argv, argc, 0));
msc = mslookup_server_msc_get(&msc_name, true);
if (!msc) {
vty_out(vty, "%% Error creating MSC %s%s", osmo_ipa_name_to_str(&msc_name), VTY_NEWLINE);
return CMD_WARNING;
}
vty->node = MSLOOKUP_SERVER_MSC_NODE;
vty->index = msc;
return CMD_SUCCESS;
}
#define SERVICE_NAME_STR \
"mslookup service name, e.g. sip.voice or smpp.sms\n"
static struct mslookup_server_msc_cfg *msc_from_node(struct vty *vty)
{
switch (vty->node) {
case MSLOOKUP_SERVER_NODE:
/* On the mslookup.server node, set services on the wildcard msc, without a particular name. */
return mslookup_server_msc_get(&mslookup_server_msc_wildcard, true);
case MSLOOKUP_SERVER_MSC_NODE:
return vty->index;
default:
return NULL;
}
}
DEFUN(cfg_mslookup_server_msc_service,
cfg_mslookup_server_msc_service_cmd,
"service NAME at IP <1-65535>",
"Configure addresses of local services, as sent in replies to remote mslookup requests.\n"
SERVICE_NAME_STR "at\n" IP46_STR PORT_STR)
{
/* If this command is run on the 'server' node, it produces an empty unit name and serves as wildcard for all
* MSCs. If on a 'server' / 'msc' node, set services only for that MSC Unit Name. */
struct mslookup_server_msc_cfg *msc = msc_from_node(vty);
const char *service = argv[0];
const char *ip_str = argv[1];
const char *port_str = argv[2];
struct osmo_sockaddr_str addr;
if (!msc) {
vty_out(vty, "%% Error: no MSC object on this node%s", VTY_NEWLINE);
return CMD_WARNING;
}
if (osmo_sockaddr_str_from_str(&addr, ip_str, atoi(port_str))
|| !osmo_sockaddr_str_is_nonzero(&addr)) {
vty_out(vty, "%% mslookup server: Invalid address for service %s: %s %s%s",
service, ip_str, port_str, VTY_NEWLINE);
return CMD_WARNING;
}
if (mslookup_server_msc_service_set(msc, service, &addr)) {
vty_out(vty, "%% mslookup server: Error setting service %s to %s %s%s",
service, ip_str, port_str, VTY_NEWLINE);
return CMD_WARNING;
}
return CMD_SUCCESS;
}
#define NO_SERVICE_AND_NAME_STR NO_STR "Remove one or more service address entries\n" SERVICE_NAME_STR
DEFUN(cfg_mslookup_server_msc_no_service,
cfg_mslookup_server_msc_no_service_cmd,
"no service NAME",
NO_SERVICE_AND_NAME_STR)
{
/* If this command is run on the 'server' node, it produces an empty unit name and serves as wildcard for all
* MSCs. If on a 'server' / 'msc' node, set services only for that MSC Unit Name. */
struct mslookup_server_msc_cfg *msc = msc_from_node(vty);
const char *service = argv[0];
if (!msc) {
vty_out(vty, "%% Error: no MSC object on this node%s", VTY_NEWLINE);
return CMD_WARNING;
}
if (mslookup_server_msc_service_del(msc, service, NULL) < 1) {
vty_out(vty, "%% mslookup server: cannot remove service '%s'%s",
service, VTY_NEWLINE);
return CMD_WARNING;
}
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_server_msc_no_service_addr,
cfg_mslookup_server_msc_no_service_addr_cmd,
"no service NAME at IP <1-65535>",
NO_SERVICE_AND_NAME_STR "at\n" IP46_STR PORT_STR)
{
/* If this command is run on the 'server' node, it produces an empty unit name and serves as wildcard for all
* MSCs. If on a 'server' / 'msc' node, set services only for that MSC Unit Name. */
struct mslookup_server_msc_cfg *msc = msc_from_node(vty);
const char *service = argv[0];
const char *ip_str = argv[1];
const char *port_str = argv[2];
struct osmo_sockaddr_str addr;
if (!msc) {
vty_out(vty, "%% Error: no MSC object on this node%s", VTY_NEWLINE);
return CMD_WARNING;
}
if (osmo_sockaddr_str_from_str(&addr, ip_str, atoi(port_str))
|| !osmo_sockaddr_str_is_nonzero(&addr)) {
vty_out(vty, "%% mslookup server: Invalid address for 'no service' %s: %s %s%s",
service, ip_str, port_str, VTY_NEWLINE);
return CMD_WARNING;
}
if (mslookup_server_msc_service_del(msc, service, &addr) < 1) {
vty_out(vty, "%% mslookup server: cannot remove service '%s' to %s %s%s",
service, ip_str, port_str, VTY_NEWLINE);
return CMD_WARNING;
}
return CMD_SUCCESS;
}
struct cmd_node mslookup_client_node = {
MSLOOKUP_CLIENT_NODE,
"%s(config-mslookup-client)# ",
1,
};
DEFUN(cfg_mslookup_client,
cfg_mslookup_client_cmd,
"client",
"Enable and configure Distributed GSM mslookup client")
{
vty->node = MSLOOKUP_CLIENT_NODE;
g_hlr->mslookup.client.enable = true;
dgsm_mdns_client_config_apply();
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_no_client,
cfg_mslookup_no_client_cmd,
"no client",
NO_STR "Disable Distributed GSM mslookup client")
{
g_hlr->mslookup.client.enable = false;
dgsm_mdns_client_config_apply();
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_client_timeout,
cfg_mslookup_client_timeout_cmd,
"timeout <1-100000>",
"How long should the mslookup client wait for remote responses before evaluating received results\n"
"timeout in milliseconds\n")
{
uint32_t val = atol(argv[0]);
g_hlr->mslookup.client.result_timeout_milliseconds = val;
return CMD_SUCCESS;
}
#define EXIT_HINT() \
if (vty->type != VTY_FILE) \
vty_out(vty, "%% 'exit' this node to apply changes%s", VTY_NEWLINE)
DEFUN(cfg_mslookup_client_mdns_bind,
cfg_mslookup_client_mdns_bind_cmd,
"mdns bind [IP] [<1-65535>]",
MDNS_STR
"Enable mDNS client, and configure multicast address to send mDNS mslookup requests to\n"
MDNS_IP46_STR MDNS_PORT_STR)
{
return mslookup_client_mdns_to(vty, argc, argv);
}
DEFUN(cfg_mslookup_client_mdns_domain_suffix,
cfg_mslookup_client_mdns_domain_suffix_cmd,
"mdns domain-suffix DOMAIN_SUFFIX",
MDNS_STR
MDNS_DOMAIN_SUFFIX_STR
MDNS_DOMAIN_SUFFIX_STR)
{
osmo_talloc_replace_string(g_hlr, &g_hlr->mslookup.client.mdns.domain_suffix, argv[0]);
dgsm_mdns_client_config_apply();
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_client_no_mdns_bind,
cfg_mslookup_client_no_mdns_bind_cmd,
"no mdns bind",
NO_STR "Disable mDNS client, do not query remote services by mDNS\n")
{
g_hlr->mslookup.client.mdns.enable = false;
dgsm_mdns_client_config_apply();
return CMD_SUCCESS;
}
void config_write_msc_services(struct vty *vty, const char *indent, struct mslookup_server_msc_cfg *msc)
{
struct mslookup_service_host *e;
llist_for_each_entry(e, &msc->service_hosts, entry) {
if (osmo_sockaddr_str_is_nonzero(&e->host_v4))
vty_out(vty, "%sservice %s at %s %u%s", indent, e->service, e->host_v4.ip, e->host_v4.port,
VTY_NEWLINE);
if (osmo_sockaddr_str_is_nonzero(&e->host_v6))
vty_out(vty, "%sservice %s at %s %u%s", indent, e->service, e->host_v6.ip, e->host_v6.port,
VTY_NEWLINE);
}
}
int config_write_mslookup(struct vty *vty)
{
if (!g_hlr->mslookup.server.enable
&& llist_empty(&g_hlr->mslookup.server.local_site_services)
&& !g_hlr->mslookup.client.enable)
return CMD_SUCCESS;
vty_out(vty, "mslookup%s", VTY_NEWLINE);
if (g_hlr->mslookup.server.enable || !llist_empty(&g_hlr->mslookup.server.local_site_services)) {
struct mslookup_server_msc_cfg *msc;
vty_out(vty, " server%s", VTY_NEWLINE);
if (g_hlr->mslookup.server.mdns.enable) {
vty_out(vty, " mdns bind");
if (osmo_sockaddr_str_is_nonzero(&g_hlr->mslookup.server.mdns.bind_addr)) {
vty_out(vty, " %s %u",
g_hlr->mslookup.server.mdns.bind_addr.ip,
g_hlr->mslookup.server.mdns.bind_addr.port);
}
vty_out(vty, "%s", VTY_NEWLINE);
}
if (strcmp(g_hlr->mslookup.server.mdns.domain_suffix, OSMO_MDNS_DOMAIN_SUFFIX_DEFAULT))
vty_out(vty, " mdns domain-suffix %s%s",
g_hlr->mslookup.server.mdns.domain_suffix,
VTY_NEWLINE);
msc = mslookup_server_msc_get(&mslookup_server_msc_wildcard, false);
if (msc)
config_write_msc_services(vty, " ", msc);
llist_for_each_entry(msc, &g_hlr->mslookup.server.local_site_services, entry) {
if (!osmo_ipa_name_cmp(&mslookup_server_msc_wildcard, &msc->name))
continue;
vty_out(vty, " msc ipa-name %s%s", osmo_ipa_name_to_str(&msc->name), VTY_NEWLINE);
config_write_msc_services(vty, " ", msc);
}
/* If the server is disabled, still output the above to not lose the service config. */
if (!g_hlr->mslookup.server.enable)
vty_out(vty, " no server%s", VTY_NEWLINE);
}
if (g_hlr->mslookup.client.enable) {
vty_out(vty, " client%s", VTY_NEWLINE);
if (osmo_sockaddr_str_is_nonzero(&g_hlr->mslookup.client.gsup_gateway_proxy))
vty_out(vty, " gateway-proxy %s %u%s",
g_hlr->mslookup.client.gsup_gateway_proxy.ip,
g_hlr->mslookup.client.gsup_gateway_proxy.port,
VTY_NEWLINE);
if (g_hlr->mslookup.client.mdns.enable
&& osmo_sockaddr_str_is_nonzero(&g_hlr->mslookup.client.mdns.query_addr))
vty_out(vty, " mdns bind %s %u%s",
g_hlr->mslookup.client.mdns.query_addr.ip,
g_hlr->mslookup.client.mdns.query_addr.port,
VTY_NEWLINE);
if (strcmp(g_hlr->mslookup.client.mdns.domain_suffix, OSMO_MDNS_DOMAIN_SUFFIX_DEFAULT))
vty_out(vty, " mdns domain-suffix %s%s",
g_hlr->mslookup.client.mdns.domain_suffix,
VTY_NEWLINE);
if (g_hlr->mslookup.client.result_timeout_milliseconds != OSMO_DGSM_DEFAULT_RESULT_TIMEOUT_MS)
vty_out(vty, " timeout %u%s",
g_hlr->mslookup.client.result_timeout_milliseconds,
VTY_NEWLINE);
}
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_client_gateway_proxy,
cfg_mslookup_client_gateway_proxy_cmd,
"gateway-proxy IP [<1-65535>]",
"Configure a fixed IP address to send all GSUP requests for unknown IMSIs to, without invoking a lookup for IMSI\n"
"IP address of the remote HLR\n" "GSUP port number (omit for default " OSMO_STRINGIFY_VAL(OSMO_GSUP_PORT) ")\n")
{
const char *ip_str = argv[0];
const char *port_str = argc > 1 ? argv[1] : NULL;
struct osmo_sockaddr_str addr;
if (osmo_sockaddr_str_from_str(&addr, ip_str, port_str ? atoi(port_str) : OSMO_GSUP_PORT)
|| !osmo_sockaddr_str_is_nonzero(&addr)) {
vty_out(vty, "%% mslookup client: Invalid address for gateway-proxy: %s %s%s",
ip_str, port_str ? : "", VTY_NEWLINE);
return CMD_WARNING;
}
g_hlr->mslookup.client.gsup_gateway_proxy = addr;
return CMD_SUCCESS;
}
DEFUN(cfg_mslookup_client_no_gateway_proxy,
cfg_mslookup_client_no_gateway_proxy_cmd,
"no gateway-proxy",
NO_STR "Disable gateway proxy for GSUP with unknown IMSIs\n")
{
g_hlr->mslookup.client.gsup_gateway_proxy = (struct osmo_sockaddr_str){};
return CMD_SUCCESS;
}
DEFUN(do_mslookup_show_services,
do_mslookup_show_services_cmd,
"show mslookup services",
SHOW_STR "Distributed GSM / mslookup related information\n"
"List configured service addresses as sent to remote mslookup requests\n")
{
struct mslookup_server_msc_cfg *msc;
const struct mslookup_service_host *local_hlr = mslookup_server_get_local_gsup_addr();
vty_out(vty, "Local GSUP HLR address returned in mslookup responses for local IMSIs:");
if (osmo_sockaddr_str_is_nonzero(&local_hlr->host_v4))
vty_out(vty, " " OSMO_SOCKADDR_STR_FMT,
OSMO_SOCKADDR_STR_FMT_ARGS(&local_hlr->host_v4));
if (osmo_sockaddr_str_is_nonzero(&local_hlr->host_v6))
vty_out(vty, " " OSMO_SOCKADDR_STR_FMT,
OSMO_SOCKADDR_STR_FMT_ARGS(&local_hlr->host_v6));
vty_out(vty, "%s", VTY_NEWLINE);
msc = mslookup_server_msc_get(&mslookup_server_msc_wildcard, false);
if (msc)
config_write_msc_services(vty, "", msc);
llist_for_each_entry(msc, &g_hlr->mslookup.server.local_site_services, entry) {
if (!osmo_ipa_name_cmp(&mslookup_server_msc_wildcard, &msc->name))
continue;
vty_out(vty, "msc ipa-name %s%s", osmo_ipa_name_to_str(&msc->name), VTY_NEWLINE);
config_write_msc_services(vty, " ", msc);
}
return CMD_SUCCESS;
}
void dgsm_vty_init(void)
{
install_element(CONFIG_NODE, &cfg_mslookup_cmd);
install_node(&mslookup_node, config_write_mslookup);
install_element(MSLOOKUP_NODE, &cfg_mslookup_mdns_cmd);
install_element(MSLOOKUP_NODE, &cfg_mslookup_mdns_domain_suffix_cmd);
install_element(MSLOOKUP_NODE, &cfg_mslookup_no_mdns_cmd);
install_element(MSLOOKUP_NODE, &cfg_mslookup_server_cmd);
install_element(MSLOOKUP_NODE, &cfg_mslookup_no_server_cmd);
install_node(&mslookup_server_node, NULL);
install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_mdns_bind_cmd);
install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_mdns_domain_suffix_cmd);
install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_no_mdns_bind_cmd);
install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_service_cmd);
install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_no_service_cmd);
install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_no_service_addr_cmd);
install_element(MSLOOKUP_SERVER_NODE, &cfg_mslookup_server_msc_cmd);
install_node(&mslookup_server_msc_node, NULL);
install_element(MSLOOKUP_SERVER_MSC_NODE, &cfg_mslookup_server_msc_service_cmd);
install_element(MSLOOKUP_SERVER_MSC_NODE, &cfg_mslookup_server_msc_no_service_cmd);
install_element(MSLOOKUP_SERVER_MSC_NODE, &cfg_mslookup_server_msc_no_service_addr_cmd);
install_element(MSLOOKUP_NODE, &cfg_mslookup_client_cmd);
install_element(MSLOOKUP_NODE, &cfg_mslookup_no_client_cmd);
install_node(&mslookup_client_node, NULL);
install_element(MSLOOKUP_CLIENT_NODE, &cfg_mslookup_client_timeout_cmd);
install_element(MSLOOKUP_CLIENT_NODE, &cfg_mslookup_client_mdns_bind_cmd);
install_element(MSLOOKUP_CLIENT_NODE, &cfg_mslookup_client_mdns_domain_suffix_cmd);
install_element(MSLOOKUP_CLIENT_NODE, &cfg_mslookup_client_no_mdns_bind_cmd);
install_element(MSLOOKUP_CLIENT_NODE, &cfg_mslookup_client_gateway_proxy_cmd);
install_element(MSLOOKUP_CLIENT_NODE, &cfg_mslookup_client_no_gateway_proxy_cmd);
install_element_ve(&do_mslookup_show_services_cmd);
}