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|
/*
Unix SMB/CIFS implementation.
KDC Server startup
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2008
Copyright (C) Andrew Tridgell 2005
Copyright (C) Stefan Metzmacher 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/service_task.h"
#include "smbd/service.h"
#include "smbd/service_stream.h"
#include "smbd/process_model.h"
#include "lib/events/events.h"
#include "lib/socket/socket.h"
#include "lib/tsocket/tsocket.h"
#include "libcli/util/tstream.h"
#include "system/network.h"
#include "../lib/util/dlinklist.h"
#include "lib/messaging/irpc.h"
#include "lib/stream/packet.h"
#include "librpc/gen_ndr/samr.h"
#include "librpc/gen_ndr/ndr_irpc.h"
#include "librpc/gen_ndr/ndr_krb5pac.h"
#include "lib/socket/netif.h"
#include "param/param.h"
#include "kdc/kdc.h"
#include "librpc/gen_ndr/ndr_misc.h"
extern struct krb5plugin_windc_ftable windc_plugin_table;
extern struct hdb_method hdb_samba4;
typedef bool (*kdc_process_fn_t)(struct kdc_server *kdc,
TALLOC_CTX *mem_ctx,
DATA_BLOB *input,
DATA_BLOB *reply,
struct tsocket_address *peer_addr,
struct tsocket_address *my_addr,
int datagram);
/* hold information about one kdc socket */
struct kdc_socket {
struct kdc_server *kdc;
struct tsocket_address *local_address;
kdc_process_fn_t process;
};
/*
state of an open tcp connection
*/
struct kdc_tcp_connection {
/* stream connection we belong to */
struct stream_connection *conn;
/* the kdc_server the connection belongs to */
struct kdc_socket *kdc_socket;
struct tstream_context *tstream;
struct tevent_queue *send_queue;
};
static void kdc_tcp_terminate_connection(struct kdc_tcp_connection *kdcconn, const char *reason)
{
stream_terminate_connection(kdcconn->conn, reason);
}
static void kdc_tcp_recv(struct stream_connection *conn, uint16_t flags)
{
struct kdc_tcp_connection *kdcconn = talloc_get_type(conn->private_data,
struct kdc_tcp_connection);
/* this should never be triggered! */
kdc_tcp_terminate_connection(kdcconn, "kdc_tcp_recv: called");
}
static void kdc_tcp_send(struct stream_connection *conn, uint16_t flags)
{
struct kdc_tcp_connection *kdcconn = talloc_get_type(conn->private_data,
struct kdc_tcp_connection);
/* this should never be triggered! */
kdc_tcp_terminate_connection(kdcconn, "kdc_tcp_send: called");
}
/**
Wrapper for krb5_kdc_process_krb5_request, converting to/from Samba
calling conventions
*/
static bool kdc_process(struct kdc_server *kdc,
TALLOC_CTX *mem_ctx,
DATA_BLOB *input,
DATA_BLOB *reply,
struct tsocket_address *peer_addr,
struct tsocket_address *my_addr,
int datagram_reply)
{
int ret;
char *pa;
struct sockaddr_storage ss;
krb5_data k5_reply;
krb5_data_zero(&k5_reply);
krb5_kdc_update_time(NULL);
ret = tsocket_address_bsd_sockaddr(peer_addr, (struct sockaddr *) &ss,
sizeof(struct sockaddr_storage));
if (ret < 0) {
return false;
}
pa = tsocket_address_string(peer_addr, mem_ctx);
if (pa == NULL) {
return false;
}
DEBUG(10,("Received KDC packet of length %lu from %s\n",
(long)input->length - 4, pa));
ret = krb5_kdc_process_krb5_request(kdc->smb_krb5_context->krb5_context,
kdc->config,
input->data, input->length,
&k5_reply,
pa,
(struct sockaddr *) &ss,
datagram_reply);
if (ret == -1) {
*reply = data_blob(NULL, 0);
return false;
}
if (k5_reply.length) {
*reply = data_blob_talloc(mem_ctx, k5_reply.data, k5_reply.length);
krb5_data_free(&k5_reply);
} else {
*reply = data_blob(NULL, 0);
}
return true;
}
struct kdc_tcp_call {
struct kdc_tcp_connection *kdc_conn;
DATA_BLOB in;
DATA_BLOB out;
uint8_t out_hdr[4];
struct iovec out_iov[2];
};
static void kdc_tcp_call_writev_done(struct tevent_req *subreq);
static void kdc_tcp_call_loop(struct tevent_req *subreq)
{
struct kdc_tcp_connection *kdc_conn = tevent_req_callback_data(subreq,
struct kdc_tcp_connection);
struct kdc_tcp_call *call;
NTSTATUS status;
bool ok;
call = talloc(kdc_conn, struct kdc_tcp_call);
if (call == NULL) {
kdc_tcp_terminate_connection(kdc_conn, "kdc_tcp_call_loop: "
"no memory for kdc_tcp_call");
return;
}
call->kdc_conn = kdc_conn;
status = tstream_read_pdu_blob_recv(subreq,
call,
&call->in);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
const char *reason;
reason = talloc_asprintf(call, "kdc_tcp_call_loop: "
"tstream_read_pdu_blob_recv() - %s",
nt_errstr(status));
if (!reason) {
reason = nt_errstr(status);
}
kdc_tcp_terminate_connection(kdc_conn, reason);
return;
}
DEBUG(10,("Received krb5 TCP packet of length %lu from %s\n",
(long) call->in.length,
tsocket_address_string(kdc_conn->conn->remote_address, call)));
/* skip length header */
call->in.data +=4;
call->in.length -= 4;
/* Call krb5 */
ok = kdc_conn->kdc_socket->process(kdc_conn->kdc_socket->kdc,
call,
&call->in,
&call->out,
kdc_conn->conn->remote_address,
kdc_conn->conn->local_address,
0 /* Stream */);
if (!ok) {
kdc_tcp_terminate_connection(kdc_conn,
"kdc_tcp_call_loop: process function failed");
return;
}
/* First add the length of the out buffer */
RSIVAL(call->out_hdr, 0, call->out.length);
call->out_iov[0].iov_base = (char *) call->out_hdr;
call->out_iov[0].iov_len = 4;
call->out_iov[1].iov_base = (char *) call->out.data;
call->out_iov[1].iov_len = call->out.length;
subreq = tstream_writev_queue_send(call,
kdc_conn->conn->event.ctx,
kdc_conn->tstream,
kdc_conn->send_queue,
call->out_iov, 2);
if (subreq == NULL) {
kdc_tcp_terminate_connection(kdc_conn, "kdc_tcp_call_loop: "
"no memory for tstream_writev_queue_send");
return;
}
tevent_req_set_callback(subreq, kdc_tcp_call_writev_done, call);
/*
* The krb5 tcp pdu's has the length as 4 byte (initial_read_size),
* packet_full_request_u32 provides the pdu length then.
*/
subreq = tstream_read_pdu_blob_send(kdc_conn,
kdc_conn->conn->event.ctx,
kdc_conn->tstream,
4, /* initial_read_size */
packet_full_request_u32,
kdc_conn);
if (subreq == NULL) {
kdc_tcp_terminate_connection(kdc_conn, "kdc_tcp_call_loop: "
"no memory for tstream_read_pdu_blob_send");
return;
}
tevent_req_set_callback(subreq, kdc_tcp_call_loop, kdc_conn);
}
static void kdc_tcp_call_writev_done(struct tevent_req *subreq)
{
struct kdc_tcp_call *call = tevent_req_callback_data(subreq,
struct kdc_tcp_call);
int sys_errno;
int rc;
rc = tstream_writev_queue_recv(subreq, &sys_errno);
TALLOC_FREE(subreq);
if (rc == -1) {
const char *reason;
reason = talloc_asprintf(call, "kdc_tcp_call_writev_done: "
"tstream_writev_queue_recv() - %d:%s",
sys_errno, strerror(sys_errno));
if (!reason) {
reason = "kdc_tcp_call_writev_done: tstream_writev_queue_recv() failed";
}
kdc_tcp_terminate_connection(call->kdc_conn, reason);
return;
}
/* We don't care about errors */
talloc_free(call);
}
/*
called when we get a new connection
*/
static void kdc_tcp_accept(struct stream_connection *conn)
{
struct kdc_socket *kdc_socket;
struct kdc_tcp_connection *kdc_conn;
struct tevent_req *subreq;
int rc;
kdc_conn = talloc_zero(conn, struct kdc_tcp_connection);
if (kdc_conn == NULL) {
stream_terminate_connection(conn,
"kdc_tcp_accept: out of memory");
return;
}
kdc_conn->send_queue = tevent_queue_create(conn, "kdc_tcp_accept");
if (kdc_conn->send_queue == NULL) {
stream_terminate_connection(conn,
"kdc_tcp_accept: out of memory");
return;
}
kdc_socket = talloc_get_type(conn->private_data, struct kdc_socket);
TALLOC_FREE(conn->event.fde);
rc = tstream_bsd_existing_socket(kdc_conn,
socket_get_fd(conn->socket),
&kdc_conn->tstream);
if (rc < 0) {
stream_terminate_connection(conn,
"kdc_tcp_accept: out of memory");
return;
}
kdc_conn->conn = conn;
kdc_conn->kdc_socket = kdc_socket;
conn->private_data = kdc_conn;
/*
* The krb5 tcp pdu's has the length as 4 byte (initial_read_size),
* packet_full_request_u32 provides the pdu length then.
*/
subreq = tstream_read_pdu_blob_send(kdc_conn,
kdc_conn->conn->event.ctx,
kdc_conn->tstream,
4, /* initial_read_size */
packet_full_request_u32,
kdc_conn);
if (subreq == NULL) {
kdc_tcp_terminate_connection(kdc_conn, "kdc_tcp_accept: "
"no memory for tstream_read_pdu_blob_send");
return;
}
tevent_req_set_callback(subreq, kdc_tcp_call_loop, kdc_conn);
}
static const struct stream_server_ops kdc_tcp_stream_ops = {
.name = "kdc_tcp",
.accept_connection = kdc_tcp_accept,
.recv_handler = kdc_tcp_recv,
.send_handler = kdc_tcp_send
};
/* hold information about one kdc/kpasswd udp socket */
struct kdc_udp_socket {
struct kdc_socket *kdc_socket;
struct tdgram_context *dgram;
struct tevent_queue *send_queue;
};
struct kdc_udp_call {
struct tsocket_address *src;
DATA_BLOB in;
DATA_BLOB out;
};
static void kdc_udp_call_sendto_done(struct tevent_req *subreq);
static void kdc_udp_call_loop(struct tevent_req *subreq)
{
struct kdc_udp_socket *sock = tevent_req_callback_data(subreq,
struct kdc_udp_socket);
struct kdc_udp_call *call;
uint8_t *buf;
ssize_t len;
int sys_errno;
bool ok;
call = talloc(sock, struct kdc_udp_call);
if (call == NULL) {
talloc_free(call);
goto done;
}
len = tdgram_recvfrom_recv(subreq, &sys_errno,
call, &buf, &call->src);
TALLOC_FREE(subreq);
if (len == -1) {
talloc_free(call);
goto done;
}
call->in.data = buf;
call->in.length = len;
DEBUG(10,("Received krb5 UDP packet of length %lu from %s\n",
(long)call->in.length,
tsocket_address_string(call->src, call)));
/* Call krb5 */
ok = sock->kdc_socket->process(sock->kdc_socket->kdc,
call,
&call->in,
&call->out,
call->src,
sock->kdc_socket->local_address,
1 /* Datagram */);
if (!ok) {
talloc_free(call);
goto done;
}
subreq = tdgram_sendto_queue_send(call,
sock->kdc_socket->kdc->task->event_ctx,
sock->dgram,
sock->send_queue,
call->out.data,
call->out.length,
call->src);
if (subreq == NULL) {
talloc_free(call);
goto done;
}
tevent_req_set_callback(subreq, kdc_udp_call_sendto_done, call);
done:
subreq = tdgram_recvfrom_send(sock,
sock->kdc_socket->kdc->task->event_ctx,
sock->dgram);
if (subreq == NULL) {
task_server_terminate(sock->kdc_socket->kdc->task,
"no memory for tdgram_recvfrom_send",
true);
return;
}
tevent_req_set_callback(subreq, kdc_udp_call_loop, sock);
}
static void kdc_udp_call_sendto_done(struct tevent_req *subreq)
{
struct kdc_udp_call *call = tevent_req_callback_data(subreq,
struct kdc_udp_call);
ssize_t ret;
int sys_errno;
ret = tdgram_sendto_queue_recv(subreq, &sys_errno);
/* We don't care about errors */
talloc_free(call);
}
/*
start listening on the given address
*/
static NTSTATUS kdc_add_socket(struct kdc_server *kdc,
const struct model_ops *model_ops,
const char *name,
const char *address,
uint16_t port,
kdc_process_fn_t process)
{
struct kdc_socket *kdc_socket;
struct kdc_udp_socket *kdc_udp_socket;
struct tevent_req *udpsubreq;
NTSTATUS status;
int ret;
kdc_socket = talloc(kdc, struct kdc_socket);
NT_STATUS_HAVE_NO_MEMORY(kdc_socket);
kdc_socket->kdc = kdc;
kdc_socket->process = process;
ret = tsocket_address_inet_from_strings(kdc_socket, "ip",
address, port,
&kdc_socket->local_address);
if (ret != 0) {
status = map_nt_error_from_unix(errno);
return status;
}
status = stream_setup_socket(kdc->task->event_ctx,
kdc->task->lp_ctx,
model_ops,
&kdc_tcp_stream_ops,
"ip", address, &port,
lpcfg_socket_options(kdc->task->lp_ctx),
kdc_socket);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("Failed to bind to %s:%u TCP - %s\n",
address, port, nt_errstr(status)));
talloc_free(kdc_socket);
return status;
}
kdc_udp_socket = talloc(kdc_socket, struct kdc_udp_socket);
NT_STATUS_HAVE_NO_MEMORY(kdc_udp_socket);
kdc_udp_socket->kdc_socket = kdc_socket;
ret = tdgram_inet_udp_socket(kdc_socket->local_address,
NULL,
kdc_udp_socket,
&kdc_udp_socket->dgram);
if (ret != 0) {
status = map_nt_error_from_unix(errno);
DEBUG(0,("Failed to bind to %s:%u UDP - %s\n",
address, port, nt_errstr(status)));
return status;
}
kdc_udp_socket->send_queue = tevent_queue_create(kdc_udp_socket,
"kdc_udp_send_queue");
NT_STATUS_HAVE_NO_MEMORY(kdc_udp_socket->send_queue);
udpsubreq = tdgram_recvfrom_send(kdc_udp_socket,
kdc->task->event_ctx,
kdc_udp_socket->dgram);
NT_STATUS_HAVE_NO_MEMORY(udpsubreq);
tevent_req_set_callback(udpsubreq, kdc_udp_call_loop, kdc_udp_socket);
return NT_STATUS_OK;
}
/*
setup our listening sockets on the configured network interfaces
*/
static NTSTATUS kdc_startup_interfaces(struct kdc_server *kdc, struct loadparm_context *lp_ctx,
struct interface *ifaces)
{
const struct model_ops *model_ops;
int num_interfaces;
TALLOC_CTX *tmp_ctx = talloc_new(kdc);
NTSTATUS status;
int i;
/* within the kdc task we want to be a single process, so
ask for the single process model ops and pass these to the
stream_setup_socket() call. */
model_ops = process_model_startup(kdc->task->event_ctx, "single");
if (!model_ops) {
DEBUG(0,("Can't find 'single' process model_ops\n"));
return NT_STATUS_INTERNAL_ERROR;
}
num_interfaces = iface_count(ifaces);
for (i=0; i<num_interfaces; i++) {
const char *address = talloc_strdup(tmp_ctx, iface_n_ip(ifaces, i));
uint16_t kdc_port = lpcfg_krb5_port(lp_ctx);
uint16_t kpasswd_port = lpcfg_kpasswd_port(lp_ctx);
if (kdc_port) {
status = kdc_add_socket(kdc, model_ops,
"kdc", address, kdc_port,
kdc_process);
NT_STATUS_NOT_OK_RETURN(status);
}
if (kpasswd_port) {
status = kdc_add_socket(kdc, model_ops,
"kpasswd", address, kpasswd_port,
kpasswdd_process);
NT_STATUS_NOT_OK_RETURN(status);
}
}
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
static NTSTATUS kdc_check_generic_kerberos(struct irpc_message *msg,
struct kdc_check_generic_kerberos *r)
{
struct PAC_Validate pac_validate;
DATA_BLOB srv_sig;
struct PAC_SIGNATURE_DATA kdc_sig;
struct kdc_server *kdc = talloc_get_type(msg->private_data, struct kdc_server);
enum ndr_err_code ndr_err;
krb5_enctype etype;
int ret;
hdb_entry_ex ent;
krb5_principal principal;
krb5_keyblock keyblock;
Key *key;
/* There is no reply to this request */
r->out.generic_reply = data_blob(NULL, 0);
ndr_err = ndr_pull_struct_blob(&r->in.generic_request, msg, &pac_validate,
(ndr_pull_flags_fn_t)ndr_pull_PAC_Validate);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return NT_STATUS_INVALID_PARAMETER;
}
if (pac_validate.MessageType != 3) {
/* We don't implement any other message types - such as certificate validation - yet */
return NT_STATUS_INVALID_PARAMETER;
}
if (pac_validate.ChecksumAndSignature.length != (pac_validate.ChecksumLength + pac_validate.SignatureLength)
|| pac_validate.ChecksumAndSignature.length < pac_validate.ChecksumLength
|| pac_validate.ChecksumAndSignature.length < pac_validate.SignatureLength ) {
return NT_STATUS_INVALID_PARAMETER;
}
srv_sig = data_blob_const(pac_validate.ChecksumAndSignature.data,
pac_validate.ChecksumLength);
if (pac_validate.SignatureType == CKSUMTYPE_HMAC_MD5) {
etype = ETYPE_ARCFOUR_HMAC_MD5;
} else {
ret = krb5_cksumtype_to_enctype(kdc->smb_krb5_context->krb5_context, pac_validate.SignatureType,
&etype);
if (ret != 0) {
return NT_STATUS_LOGON_FAILURE;
}
}
ret = krb5_make_principal(kdc->smb_krb5_context->krb5_context, &principal,
lpcfg_realm(kdc->task->lp_ctx),
"krbtgt", lpcfg_realm(kdc->task->lp_ctx),
NULL);
if (ret != 0) {
return NT_STATUS_NO_MEMORY;
}
ret = kdc->config->db[0]->hdb_fetch(kdc->smb_krb5_context->krb5_context,
kdc->config->db[0],
principal,
HDB_F_GET_KRBTGT | HDB_F_DECRYPT,
0,
&ent);
if (ret != 0) {
hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
return NT_STATUS_LOGON_FAILURE;
}
ret = hdb_enctype2key(kdc->smb_krb5_context->krb5_context, &ent.entry, etype, &key);
if (ret != 0) {
hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
return NT_STATUS_LOGON_FAILURE;
}
keyblock = key->key;
kdc_sig.type = pac_validate.SignatureType;
kdc_sig.signature = data_blob_const(&pac_validate.ChecksumAndSignature.data[pac_validate.ChecksumLength],
pac_validate.SignatureLength);
ret = check_pac_checksum(msg, srv_sig, &kdc_sig,
kdc->smb_krb5_context->krb5_context, &keyblock);
hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
if (ret != 0) {
return NT_STATUS_LOGON_FAILURE;
}
return NT_STATUS_OK;
}
/*
startup the kdc task
*/
static void kdc_task_init(struct task_server *task)
{
struct kdc_server *kdc;
NTSTATUS status;
krb5_error_code ret;
struct interface *ifaces;
switch (lpcfg_server_role(task->lp_ctx)) {
case ROLE_STANDALONE:
task_server_terminate(task, "kdc: no KDC required in standalone configuration", false);
return;
case ROLE_DOMAIN_MEMBER:
task_server_terminate(task, "kdc: no KDC required in member server configuration", false);
return;
case ROLE_DOMAIN_CONTROLLER:
/* Yes, we want a KDC */
break;
}
load_interfaces(task, lpcfg_interfaces(task->lp_ctx), &ifaces);
if (iface_count(ifaces) == 0) {
task_server_terminate(task, "kdc: no network interfaces configured", false);
return;
}
task_server_set_title(task, "task[kdc]");
kdc = talloc(task, struct kdc_server);
if (kdc == NULL) {
task_server_terminate(task, "kdc: out of memory", true);
return;
}
kdc->task = task;
initialize_krb5_error_table();
ret = smb_krb5_init_context(kdc, task->event_ctx, task->lp_ctx, &kdc->smb_krb5_context);
if (ret) {
DEBUG(1,("kdc_task_init: krb5_init_context failed (%s)\n",
error_message(ret)));
task_server_terminate(task, "kdc: krb5_init_context failed", true);
return;
}
krb5_add_et_list(kdc->smb_krb5_context->krb5_context, initialize_hdb_error_table_r);
ret = krb5_kdc_get_config(kdc->smb_krb5_context->krb5_context,
&kdc->config);
if(ret) {
task_server_terminate(task, "kdc: failed to get KDC configuration", true);
return;
}
kdc->config->logf = kdc->smb_krb5_context->logf;
kdc->config->db = talloc(kdc, struct HDB *);
if (!kdc->config->db) {
task_server_terminate(task, "kdc: out of memory", true);
return;
}
kdc->config->num_db = 1;
/* Register hdb-samba4 hooks for use as a keytab */
kdc->base_ctx = talloc_zero(kdc, struct samba_kdc_base_context);
if (!kdc->base_ctx) {
task_server_terminate(task, "kdc: out of memory", true);
return;
}
kdc->base_ctx->ev_ctx = task->event_ctx;
kdc->base_ctx->lp_ctx = task->lp_ctx;
status = hdb_samba4_create_kdc(kdc->base_ctx,
kdc->smb_krb5_context->krb5_context,
&kdc->config->db[0]);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "kdc: hdb_samba4_create_kdc (setup KDC database) failed", true);
return;
}
ret = krb5_plugin_register(kdc->smb_krb5_context->krb5_context,
PLUGIN_TYPE_DATA, "hdb",
&hdb_samba4);
if(ret) {
task_server_terminate(task, "kdc: failed to register hdb plugin", true);
return;
}
ret = krb5_kt_register(kdc->smb_krb5_context->krb5_context, &hdb_kt_ops);
if(ret) {
task_server_terminate(task, "kdc: failed to register keytab plugin", true);
return;
}
/* Register WinDC hooks */
ret = krb5_plugin_register(kdc->smb_krb5_context->krb5_context,
PLUGIN_TYPE_DATA, "windc",
&windc_plugin_table);
if(ret) {
task_server_terminate(task, "kdc: failed to register windc plugin", true);
return;
}
krb5_kdc_windc_init(kdc->smb_krb5_context->krb5_context);
/* start listening on the configured network interfaces */
status = kdc_startup_interfaces(kdc, task->lp_ctx, ifaces);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "kdc failed to setup interfaces", true);
return;
}
status = IRPC_REGISTER(task->msg_ctx, irpc, KDC_CHECK_GENERIC_KERBEROS,
kdc_check_generic_kerberos, kdc);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "nbtd failed to setup monitoring", true);
return;
}
irpc_add_name(task->msg_ctx, "kdc_server");
}
/* called at smbd startup - register ourselves as a server service */
NTSTATUS server_service_kdc_init(void)
{
return register_server_service("kdc", kdc_task_init);
}
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