diff options
Diffstat (limited to 'source4/libcli/nbt/nameregister.c')
| -rw-r--r-- | source4/libcli/nbt/nameregister.c | 169 |
1 files changed, 168 insertions, 1 deletions
diff --git a/source4/libcli/nbt/nameregister.c b/source4/libcli/nbt/nameregister.c index 9e9a1e1710..b0ed1ae89c 100644 --- a/source4/libcli/nbt/nameregister.c +++ b/source4/libcli/nbt/nameregister.c @@ -40,7 +40,11 @@ struct nbt_name_request *nbt_name_register_send(struct nbt_name_socket *nbtsock, packet->qdcount = 1; packet->arcount = 1; - packet->operation = NBT_OPCODE_REGISTER; + if (io->in.multi_homed) { + packet->operation = NBT_OPCODE_MULTI_HOME_REG; + } else { + packet->operation = NBT_OPCODE_REGISTER; + } if (io->in.broadcast) { packet->operation |= NBT_FLAG_BROADCAST; } @@ -221,6 +225,7 @@ struct composite_context *nbt_name_register_bcast_send(struct nbt_name_socket *n state->io->in.nb_flags = io->in.nb_flags; state->io->in.register_demand = False; state->io->in.broadcast = True; + state->io->in.multi_homed = False; state->io->in.ttl = io->in.ttl; state->io->in.timeout = 1; state->io->in.retries = 2; @@ -264,3 +269,165 @@ NTSTATUS nbt_name_register_bcast(struct nbt_name_socket *nbtsock, struct composite_context *c = nbt_name_register_bcast_send(nbtsock, io); return nbt_name_register_bcast_recv(c); } + + +/* + a wins name register with multiple WINS servers and multiple + addresses to register. Try each WINS server in turn, until we get a + reply for each address +*/ +struct register_wins_state { + struct nbt_name_socket *nbtsock; + struct nbt_name_register *io; + const char **wins_servers; + const char **addresses; + int address_idx; + struct nbt_name_request *req; +}; + + +/* + state handler for WINS multi-homed multi-server name register +*/ +static void name_register_wins_handler(struct nbt_name_request *req) +{ + struct composite_context *c = talloc_get_type(req->async.private, + struct composite_context); + struct register_wins_state *state = talloc_get_type(c->private, + struct register_wins_state); + NTSTATUS status; + + status = nbt_name_register_recv(state->req, state, state->io); + if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) { + /* the register timed out - try the next WINS server */ + state->wins_servers++; + state->address_idx = 0; + if (state->wins_servers[0] == NULL) { + c->state = SMBCLI_REQUEST_ERROR; + c->status = status; + goto done; + } + state->io->in.dest_addr = state->wins_servers[0]; + state->io->in.address = state->addresses[0]; + state->req = nbt_name_register_send(state->nbtsock, state->io); + if (state->req == NULL) { + c->state = SMBCLI_REQUEST_ERROR; + c->status = NT_STATUS_NO_MEMORY; + } else { + state->req->async.fn = name_register_wins_handler; + state->req->async.private = c; + } + } else if (!NT_STATUS_IS_OK(status)) { + c->state = SMBCLI_REQUEST_ERROR; + c->status = status; + } else { + if (state->io->out.rcode == 0 && + state->addresses[state->address_idx+1] != NULL) { + /* register our next address */ + state->io->in.address = state->addresses[++(state->address_idx)]; + state->req = nbt_name_register_send(state->nbtsock, state->io); + if (state->req == NULL) { + c->state = SMBCLI_REQUEST_ERROR; + c->status = NT_STATUS_NO_MEMORY; + } else { + state->req->async.fn = name_register_wins_handler; + state->req->async.private = c; + } + } else { + c->state = SMBCLI_REQUEST_DONE; + c->status = NT_STATUS_OK; + } + } + +done: + if (c->state >= SMBCLI_REQUEST_DONE && + c->async.fn) { + c->async.fn(c); + } +} + +/* + the async send call for a multi-server WINS register +*/ +struct composite_context *nbt_name_register_wins_send(struct nbt_name_socket *nbtsock, + struct nbt_name_register_wins *io) +{ + struct composite_context *c; + struct register_wins_state *state; + + c = talloc_zero(nbtsock, struct composite_context); + if (c == NULL) goto failed; + + state = talloc(c, struct register_wins_state); + if (state == NULL) goto failed; + + state->io = talloc(state, struct nbt_name_register); + if (state->io == NULL) goto failed; + + state->wins_servers = str_list_copy(state, io->in.wins_servers); + if (state->wins_servers == NULL || + state->wins_servers[0] == NULL) goto failed; + + state->addresses = str_list_copy(state, io->in.addresses); + if (state->addresses == NULL || + state->addresses[0] == NULL) goto failed; + + state->io->in.name = io->in.name; + state->io->in.dest_addr = state->wins_servers[0]; + state->io->in.address = io->in.addresses[0]; + state->io->in.nb_flags = io->in.nb_flags; + state->io->in.broadcast = False; + state->io->in.register_demand = False; + state->io->in.multi_homed = (io->in.nb_flags & NBT_NM_GROUP)?False:True; + state->io->in.ttl = io->in.ttl; + state->io->in.timeout = 3; + state->io->in.retries = 2; + + state->nbtsock = nbtsock; + state->address_idx = 0; + + state->req = nbt_name_register_send(nbtsock, state->io); + if (state->req == NULL) goto failed; + + state->req->async.fn = name_register_wins_handler; + state->req->async.private = c; + + c->private = state; + c->state = SMBCLI_REQUEST_SEND; + c->event_ctx = nbtsock->event_ctx; + + return c; + +failed: + talloc_free(c); + return NULL; +} + +/* + multi-homed WINS name register - recv side +*/ +NTSTATUS nbt_name_register_wins_recv(struct composite_context *c, TALLOC_CTX *mem_ctx, + struct nbt_name_register_wins *io) +{ + NTSTATUS status; + status = composite_wait(c); + if (NT_STATUS_IS_OK(status)) { + struct register_wins_state *state = + talloc_get_type(c->private, struct register_wins_state); + io->out.wins_server = talloc_steal(mem_ctx, state->wins_servers[0]); + io->out.rcode = state->io->out.rcode; + } + talloc_free(c); + return status; +} + +/* + multi-homed WINS register - sync interface +*/ +NTSTATUS nbt_name_register_wins(struct nbt_name_socket *nbtsock, + TALLOC_CTX *mem_ctx, + struct nbt_name_register_wins *io) +{ + struct composite_context *c = nbt_name_register_wins_send(nbtsock, io); + return nbt_name_register_wins_recv(c, mem_ctx, io); +} |