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/*
Unix SMB/CIFS implementation.
NBT server task
Copyright (C) Andrew Tridgell 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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "lib/events/events.h"
#include "smbd/service_task.h"
#include "nbt_server/nbt_server.h"
/*
serve out the nbt statistics
*/
static NTSTATUS nbtd_information(struct irpc_message *msg,
struct nbtd_information *r)
{
struct nbtd_server *server = talloc_get_type(msg->private, struct nbtd_server);
switch (r->in.level) {
case NBTD_INFO_STATISTICS:
r->out.info.stats = &server->stats;
break;
}
return NT_STATUS_OK;
}
struct getdc_state {
struct irpc_message *msg;
struct nbtd_getdcname *req;
};
static void getdc_recv_ntlogon_reply(struct dgram_mailslot_handler *dgmslot,
struct nbt_dgram_packet *packet,
const char *src_address, int src_port)
{
struct getdc_state *s =
talloc_get_type(dgmslot->private, struct getdc_state);
struct nbt_ntlogon_packet ntlogon;
NTSTATUS status;
status = dgram_mailslot_ntlogon_parse(dgmslot, packet, packet,
&ntlogon);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(5, ("dgram_mailslot_ntlogon_parse failed: %s\n",
nt_errstr(status)));
goto done;
}
status = NT_STATUS_NO_LOGON_SERVERS;
DEBUG(10, ("reply: command=%d\n", ntlogon.command));
switch (ntlogon.command) {
case NTLOGON_SAM_LOGON:
DEBUG(0, ("Huh -- got NTLOGON_SAM_LOGON as reply\n"));
break;
case NTLOGON_SAM_LOGON_REPLY:
DEBUG(10, ("NTLOGON_SAM_LOGON_REPLY: server: %s, user: %s, "
"domain: %s\n", ntlogon.req.reply.server,
ntlogon.req.reply.user_name,
ntlogon.req.reply.domain));
s->req->out.dcname =
talloc_strdup(s->req, ntlogon.req.reply.server);
if (s->req->out.dcname == NULL) {
DEBUG(0, ("talloc failed\n"));
status = NT_STATUS_NO_MEMORY;
goto done;
}
status = NT_STATUS_OK;
break;
default:
DEBUG(0, ("Got unknown packet: %d\n", ntlogon.command));
break;
}
done:
irpc_send_reply(s->msg, status);
}
static NTSTATUS nbtd_getdcname(struct irpc_message *msg,
struct nbtd_getdcname *req)
{
struct nbtd_server *server =
talloc_get_type(msg->private, struct nbtd_server);
struct getdc_state *s;
struct nbt_ntlogon_packet p;
struct nbt_ntlogon_sam_logon *r;
struct nbt_dgram_socket *sock;
struct nbt_name src, dst;
struct dgram_mailslot_handler *handler;
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
DEBUG(0, ("nbtd_getdcname called\n"));
sock = server->interfaces[0].dgmsock;
s = talloc(msg, struct getdc_state);
NT_STATUS_HAVE_NO_MEMORY(s);
s->msg = msg;
s->req = req;
handler = dgram_mailslot_temp(sock, NBT_MAILSLOT_GETDC,
getdc_recv_ntlogon_reply, s);
NT_STATUS_HAVE_NO_MEMORY(handler);
ZERO_STRUCT(p);
p.command = NTLOGON_SAM_LOGON;
r = &p.req.logon;
r->request_count = 0;
r->computer_name = req->in.my_computername;
r->user_name = req->in.my_accountname;
r->mailslot_name = handler->mailslot_name;
r->acct_control = req->in.account_control;
r->sid = *req->in.domain_sid;
r->nt_version = 1;
r->lmnt_token = 0xffff;
r->lm20_token = 0xffff;
make_nbt_name_client(&src, req->in.my_computername);
make_nbt_name(&dst, req->in.domainname, 0x1c);
status = dgram_mailslot_ntlogon_send(sock, DGRAM_DIRECT_GROUP,
&dst, req->in.ip_address, 138,
&src, &p);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("dgram_mailslot_ntlogon_send failed: %s\n",
nt_errstr(status)));
return status;
}
msg->defer_reply = True;
return NT_STATUS_OK;
}
/*
startup the nbtd task
*/
static void nbtd_task_init(struct task_server *task)
{
struct nbtd_server *nbtsrv;
NTSTATUS status;
if (iface_count() == 0) {
task_server_terminate(task, "nbtd: no network interfaces configured");
return;
}
nbtsrv = talloc(task, struct nbtd_server);
if (nbtsrv == NULL) {
task_server_terminate(task, "nbtd: out of memory");
return;
}
nbtsrv->task = task;
nbtsrv->interfaces = NULL;
nbtsrv->bcast_interface = NULL;
nbtsrv->wins_interface = NULL;
/* start listening on the configured network interfaces */
status = nbtd_startup_interfaces(nbtsrv);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "nbtd failed to setup interfaces");
return;
}
/* start the WINS server, if appropriate */
status = nbtd_winsserver_init(nbtsrv);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "nbtd failed to start WINS server");
return;
}
/* setup monitoring */
status = IRPC_REGISTER(task->msg_ctx, irpc, NBTD_INFORMATION,
nbtd_information, nbtsrv);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "nbtd failed to setup monitoring");
return;
}
/* Setup handler for getdcname call */
status = IRPC_REGISTER(task->msg_ctx, irpc, NBTD_GETDCNAME,
nbtd_getdcname, nbtsrv);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "nbtd failed to setup getdcname "
"handler");
return;
}
/* start the process of registering our names on all interfaces */
nbtd_register_names(nbtsrv);
irpc_add_name(task->msg_ctx, "nbt_server");
}
/*
initialise the nbt server
*/
static NTSTATUS nbtd_init(struct event_context *event_ctx, const struct model_ops *model_ops)
{
return task_server_startup(event_ctx, model_ops, nbtd_task_init);
}
/*
register ourselves as a available server
*/
NTSTATUS server_service_nbtd_init(void)
{
return register_server_service("nbt", nbtd_init);
}
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