diff options
author | Andrew Tridgell <tridge@samba.org> | 2005-01-31 01:57:58 +0000 |
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committer | Gerald (Jerry) Carter <jerry@samba.org> | 2007-10-10 13:09:23 -0500 |
commit | 414f6c80b22b128c25d947d62f6b5d1ec13091b6 (patch) | |
tree | da147a6c2802a7af79b5dfcdf3d3f6508287520e /source4/libcli/nbt/nameregister.c | |
parent | 37449657a8d335097b3f3559f8b5bf084b50b85a (diff) | |
download | samba-414f6c80b22b128c25d947d62f6b5d1ec13091b6.tar.gz samba-414f6c80b22b128c25d947d62f6b5d1ec13091b6.tar.bz2 samba-414f6c80b22b128c25d947d62f6b5d1ec13091b6.zip |
r5114: the nbtd task can now act as a basic B-node server. It registers its
names on the network and answers name queries. Lots of details are
still missing, but at least this now means you don't need a Samba3
nmbd to use Samba4.
missing pieces include:
- name registrations should be "shout 3 times, then demand"
- no WINS server yet
- no master browser code
(This used to be commit d7d31fdc6670f026f96b50e51a4de19f0b920e5b)
Diffstat (limited to 'source4/libcli/nbt/nameregister.c')
-rw-r--r-- | source4/libcli/nbt/nameregister.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/source4/libcli/nbt/nameregister.c b/source4/libcli/nbt/nameregister.c new file mode 100644 index 0000000000..2d1e964977 --- /dev/null +++ b/source4/libcli/nbt/nameregister.c @@ -0,0 +1,140 @@ +/* + Unix SMB/CIFS implementation. + + send out a name registration request + + 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 "libcli/nbt/libnbt.h" +#include "system/network.h" + +/* + send a nbt name registration request +*/ +struct nbt_name_request *nbt_name_register_send(struct nbt_name_socket *nbtsock, + struct nbt_name_register *io) +{ + struct nbt_name_request *req; + struct nbt_name_packet *packet; + + packet = talloc_zero(nbtsock, struct nbt_name_packet); + if (packet == NULL) return NULL; + + packet->qdcount = 1; + packet->arcount = 1; + packet->operation = NBT_OPCODE_REGISTER; + if (io->in.broadcast) { + packet->operation |= NBT_FLAG_BROADCAST; + } + if (io->in.register_demand) { + packet->operation |= NBT_FLAG_RECURSION_DESIRED; + } + + packet->questions = talloc_array(packet, struct nbt_name_question, 1); + if (packet->questions == NULL) goto failed; + + packet->questions[0].name = io->in.name; + packet->questions[0].question_type = NBT_QTYPE_NETBIOS; + packet->questions[0].question_class = NBT_QCLASS_IP; + + packet->additional = talloc_array(packet, struct nbt_res_rec, 1); + if (packet->additional == NULL) goto failed; + + packet->additional[0].name = io->in.name; + packet->additional[0].rr_type = NBT_QTYPE_NETBIOS; + packet->additional[0].rr_class = NBT_QCLASS_IP; + packet->additional[0].ttl = io->in.ttl; + packet->additional[0].rdata.netbios.length = 6; + packet->additional[0].rdata.netbios.addresses = talloc_array(packet->additional, + struct nbt_rdata_address, 1); + if (packet->additional[0].rdata.netbios.addresses == NULL) goto failed; + packet->additional[0].rdata.netbios.addresses[0].nb_flags = io->in.nb_flags; + packet->additional[0].rdata.netbios.addresses[0].ipaddr = htonl(inet_addr(io->in.address)); + + req = nbt_name_request_send(nbtsock, io->in.dest_addr, lp_nbt_port(), packet, + timeval_current_ofs(io->in.timeout, 0), False); + if (req == NULL) goto failed; + + talloc_steal(req, packet); + + return req; + +failed: + talloc_free(packet); + return NULL; +} + +/* + wait for a registration reply +*/ +NTSTATUS nbt_name_register_recv(struct nbt_name_request *req, + TALLOC_CTX *mem_ctx, struct nbt_name_register *io) +{ + NTSTATUS status; + struct nbt_name_packet *packet; + const char *addr; + struct in_addr in; + + status = nbt_name_request_recv(req); + if (!NT_STATUS_IS_OK(status) || + req->num_replies == 0) { + talloc_free(req); + return status; + } + + packet = req->replies[0].packet; + io->out.reply_from = talloc_steal(mem_ctx, req->replies[0].reply_addr); + + if (packet->ancount != 1 || + packet->answers[0].rr_type != NBT_QTYPE_NETBIOS || + packet->answers[0].rr_class != NBT_QCLASS_IP) { + talloc_free(req); + return NT_STATUS_INVALID_NETWORK_RESPONSE; + } + + io->out.rcode = packet->operation & NBT_RCODE; + io->out.name = packet->answers[0].name; + if (packet->answers[0].rdata.netbios.length < 6) { + talloc_free(req); + return NT_STATUS_INVALID_NETWORK_RESPONSE; + } + in.s_addr = htonl(packet->answers[0].rdata.netbios.addresses[0].ipaddr); + addr = inet_ntoa(in); + if (addr == NULL) { + talloc_free(req); + return NT_STATUS_NO_MEMORY; + } + io->out.reply_addr = talloc_strdup(mem_ctx, addr); + talloc_steal(mem_ctx, io->out.name.name); + talloc_steal(mem_ctx, io->out.name.scope); + + talloc_free(req); + + return NT_STATUS_OK; +} + +/* + synchronous name registration request +*/ +NTSTATUS nbt_name_register(struct nbt_name_socket *nbtsock, + TALLOC_CTX *mem_ctx, struct nbt_name_register *io) +{ + struct nbt_name_request *req = nbt_name_register_send(nbtsock, io); + return nbt_name_register_recv(req, mem_ctx, io); +} |