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/*
Unix SMB/CIFS implementation.
register our names
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 "dlinklist.h"
#include "nbt_server/nbt_server.h"
/*
start a timer to refresh this name
*/
static void nbt_start_refresh_timer(struct nbt_iface_name *iname)
{
}
/*
a name registration has completed
*/
static void nbt_register_handler(struct nbt_name_request *req)
{
struct nbt_iface_name *iname = talloc_get_type(req->async.private, struct nbt_iface_name);
NTSTATUS status;
struct nbt_name_register io;
status = nbt_name_register_recv(req, iname, &io);
if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) {
/* good - nobody complained about our registration */
iname->nb_flags |= NBT_NM_ACTIVE;
DEBUG(3,("Registered %s<%02x> on interface %s\n",
iname->name.name, iname->name.type, iname->iface->bcast_address));
nbt_start_refresh_timer(iname);
return;
}
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1,("Error registering %s<%02x> on interface %s - %s\n",
iname->name.name, iname->name.type, iname->iface->bcast_address,
nt_errstr(status)));
return;
}
/* someone must have replied with an objection! */
iname->nb_flags |= NBT_NM_CONFLICT;
DEBUG(1,("Name conflict registering %s<%02x> on interface %s - rcode %d from %s for %s\n",
iname->name.name, iname->name.type, iname->iface->bcast_address,
io.out.rcode, io.out.reply_from, io.out.reply_addr));
}
/*
register a name on a network interface
*/
static void nbt_register_name_iface(struct nbt_interface *iface,
const char *name, enum nbt_name_type type,
uint16_t nb_flags)
{
struct nbt_iface_name *iname;
const char *scope = lp_netbios_scope();
struct nbt_name_register io;
struct nbt_name_request *req;
iname = talloc(iface, struct nbt_iface_name);
if (!iname) return;
iname->iface = iface;
iname->name.name = talloc_strdup(iname, name);
iname->name.type = type;
if (scope && *scope) {
iname->name.scope = talloc_strdup(iname, scope);
} else {
iname->name.scope = NULL;
}
iname->nb_flags = nb_flags;
iname->ttl = lp_parm_int(-1, "nbtd", "bcast_ttl", 300000);
iname->registration_time = timeval_zero();
DLIST_ADD(iface->names, iname);
if (nb_flags & NBT_NM_PERMANENT) {
/* permanent names are not announced and are immediately active */
iname->nb_flags |= NBT_NM_ACTIVE;
iname->ttl = 0;
return;
}
/* setup a broadcast name registration request */
io.in.name = iname->name;
io.in.dest_addr = iface->bcast_address;
io.in.address = iface->ip_address;
io.in.nb_flags = nb_flags;
io.in.register_demand = False;
io.in.broadcast = True;
io.in.ttl = iname->ttl;
io.in.timeout = 1;
req = nbt_name_register_send(iface->nbtsock, &io);
if (req == NULL) return;
req->async.fn = nbt_register_handler;
req->async.private = iname;
}
/*
register one name on all our interfaces
*/
static void nbt_register_name(struct nbt_server *nbtsrv,
const char *name, enum nbt_name_type type,
uint16_t nb_flags)
{
struct nbt_interface *iface;
/* register with all the local interfaces */
for (iface=nbtsrv->interfaces;iface;iface=iface->next) {
nbt_register_name_iface(iface, name, type, nb_flags);
}
/* register on our general broadcast interface as a permanent name */
nbt_register_name_iface(nbtsrv->bcast_interface, name, type, nb_flags | NBT_NM_PERMANENT);
/* TODO: register with our WINS servers */
}
/*
register our names on all interfaces
*/
void nbt_register_names(struct nbt_server *nbtsrv)
{
uint16_t nb_flags = NBT_NODE_M;
/* note that we don't initially mark the names "ACTIVE". They are
marked active once registration is successful */
nbt_register_name(nbtsrv, lp_netbios_name(), NBT_NAME_CLIENT, nb_flags);
nbt_register_name(nbtsrv, lp_netbios_name(), NBT_NAME_USER, nb_flags);
nbt_register_name(nbtsrv, lp_netbios_name(), NBT_NAME_SERVER, nb_flags);
nbt_register_name(nbtsrv, lp_workgroup(), NBT_NAME_CLIENT, nb_flags | NBT_NM_GROUP);
nbt_register_name(nbtsrv, lp_workgroup(), NBT_NAME_SERVER, nb_flags | NBT_NM_GROUP);
nbt_register_name(nbtsrv, "__SAMBA__", NBT_NAME_CLIENT, nb_flags | NBT_NM_PERMANENT);
nbt_register_name(nbtsrv, "__SAMBA__", NBT_NAME_SERVER, nb_flags | NBT_NM_PERMANENT);
}
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