/*
answer a node status query
*/
void nbtd_query_status(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
struct socket_address *src)
{
struct nbt_name *name;
struct nbtd_iface_name *iname;
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
struct nbtd_interface);
NBTD_ASSERT_PACKET(packet, src, packet->qdcount == 1);
NBTD_ASSERT_PACKET(packet, src, packet->questions[0].question_type == NBT_QTYPE_STATUS);
NBTD_ASSERT_PACKET(packet, src, packet->questions[0].question_class == NBT_QCLASS_IP);
/* see if we have the requested name on this interface */
name = &packet->questions[0].name;
iname = nbtd_find_iname(iface, name, NBT_NM_ACTIVE);
if (iname == NULL) {
DEBUG(7,("Node status query for %s from %s - not found on %s\n",
nbt_name_string(packet, name), src->addr, iface->ip_address));
return;
}
nbtd_node_status_reply(nbtsock, packet, src,
&iname->name, iface);
}
/*
handle incoming netlogon mailslot requests
*/
void nbtd_mailslot_netlogon_handler(struct dgram_mailslot_handler *dgmslot,
struct nbt_dgram_packet *packet,
struct socket_address *src)
{
NTSTATUS status = NT_STATUS_NO_MEMORY;
struct nbtd_interface *iface =
talloc_get_type(dgmslot->private_data, struct nbtd_interface);
struct nbt_netlogon_packet *netlogon =
talloc(dgmslot, struct nbt_netlogon_packet);
struct nbtd_iface_name *iname;
struct nbt_name *name = &packet->data.msg.dest_name;
if (netlogon == NULL) goto failed;
/*
see if the we are listening on the destination netbios name
*/
iname = nbtd_find_iname(iface, name, 0);
if (iname == NULL) {
status = NT_STATUS_BAD_NETWORK_NAME;
goto failed;
}
DEBUG(5,("netlogon request to %s from %s:%d\n",
nbt_name_string(netlogon, name), src->addr, src->port));
status = dgram_mailslot_netlogon_parse_request(dgmslot, netlogon, packet, netlogon);
if (!NT_STATUS_IS_OK(status)) goto failed;
switch (netlogon->command) {
case LOGON_PRIMARY_QUERY:
nbtd_netlogon_getdc(dgmslot, iface, packet,
src, netlogon);
break;
case LOGON_SAM_LOGON_REQUEST:
nbtd_netlogon_samlogon(dgmslot, iface, packet,
src, netlogon);
break;
default:
DEBUG(2,("unknown netlogon op %d from %s:%d\n",
netlogon->command, src->addr, src->port));
NDR_PRINT_DEBUG(nbt_netlogon_packet, netlogon);
break;
}
talloc_free(netlogon);
return;
failed:
DEBUG(2,("nbtd netlogon handler failed from %s:%d to %s - %s\n",
src->addr, src->port, nbt_name_string(netlogon, name),
nt_errstr(status)));
talloc_free(netlogon);
}
/*
answer a name query
*/
void nbtd_request_query(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
struct socket_address *src)
{
struct nbtd_iface_name *iname;
struct nbt_name *name;
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private_data,
struct nbtd_interface);
/* see if its a node status query */
if (packet->qdcount == 1 &&
packet->questions[0].question_type == NBT_QTYPE_STATUS) {
nbtd_query_status(nbtsock, packet, src);
return;
}
NBTD_ASSERT_PACKET(packet, src, packet->qdcount == 1);
NBTD_ASSERT_PACKET(packet, src,
packet->questions[0].question_type == NBT_QTYPE_NETBIOS);
NBTD_ASSERT_PACKET(packet, src,
packet->questions[0].question_class == NBT_QCLASS_IP);
/* see if we have the requested name on this interface */
name = &packet->questions[0].name;
iname = nbtd_find_iname(iface, name, 0);
if (iname == NULL) {
/* don't send negative replies to broadcast queries */
if (packet->operation & NBT_FLAG_BROADCAST) {
return;
}
if (packet->operation & NBT_FLAG_RECURSION_DESIRED) {
nbtd_winsserver_request(nbtsock, packet, src);
return;
}
/* otherwise send a negative reply */
nbtd_negative_name_query_reply(nbtsock, packet, src);
return;
}
/*
* normally we should forward all queries with the
* recursion desired flag to the wins server, but this
* breaks are winsclient code, when doing mhomed registrations
*/
if (!(packet->operation & NBT_FLAG_BROADCAST) &&
(packet->operation & NBT_FLAG_RECURSION_DESIRED) &&
(iname->nb_flags & NBT_NM_GROUP) &&
lpcfg_wins_support(iface->nbtsrv->task->lp_ctx)) {
nbtd_winsserver_request(nbtsock, packet, src);
return;
}
/* if the name is not yet active and its a broadcast query then
ignore it for now */
if (!(iname->nb_flags & NBT_NM_ACTIVE) &&
(packet->operation & NBT_FLAG_BROADCAST)) {
DEBUG(7,("Query for %s from %s - name not active yet on %s\n",
nbt_name_string(packet, name), src->addr, iface->ip_address));
return;
}
nbtd_name_query_reply(nbtsock, packet, src,
&iname->name, iname->ttl, iname->nb_flags,
nbtd_address_list(iface, packet));
}
static NTSTATUS nbtd_mailslot_netlogon_reply(
struct nbtd_interface *iface,
struct nbt_dgram_packet *packet,
struct socket_address *src,
TALLOC_CTX *mem_ctx,
struct nbt_netlogon_response **presponse,
char **preply_mailslot)
{
struct nbt_netlogon_packet *netlogon;
struct nbt_name *dst_name = &packet->data.msg.dest_name;
struct nbt_netlogon_response *response = NULL;
struct nbtd_iface_name *iname;
char *reply_mailslot = NULL;
NTSTATUS status;
/*
see if the we are listening on the destination netbios name
*/
iname = nbtd_find_iname(iface, dst_name, 0);
if (iname == NULL) {
return NT_STATUS_BAD_NETWORK_NAME;
}
netlogon = talloc(mem_ctx, struct nbt_netlogon_packet);
if (netlogon == NULL) {
return NT_STATUS_NO_MEMORY;
}
status = dgram_mailslot_netlogon_parse_request(netlogon, packet,
netlogon);
if (!NT_STATUS_IS_OK(status)) {
goto failed;
}
switch (netlogon->command) {
case LOGON_PRIMARY_QUERY:
status = nbtd_netlogon_getdc(
iface->nbtsrv, &packet->data.msg.dest_name,
netlogon, mem_ctx, &response, &reply_mailslot);
break;
case LOGON_SAM_LOGON_REQUEST:
status = nbtd_netlogon_samlogon(
iface->nbtsrv, &packet->data.msg.dest_name, src,
netlogon, mem_ctx, &response, &reply_mailslot);
break;
default:
DEBUG(2,("unknown netlogon op %d from %s:%d\n",
netlogon->command, src->addr, src->port));
NDR_PRINT_DEBUG(nbt_netlogon_packet, netlogon);
status = NT_STATUS_NOT_SUPPORTED;
break;
}
if (!NT_STATUS_IS_OK(status)) {
DBG_DEBUG("Calculating reply failed: %s\n",
nt_errstr(status));
goto failed;
}
*presponse = response;
*preply_mailslot = reply_mailslot;
return NT_STATUS_OK;
failed:
TALLOC_FREE(reply_mailslot);
TALLOC_FREE(netlogon);
return status;
}
