/* Unix SMB/CIFS implementation. wins server dns proxy Copyright (C) Stefan Metzmacher 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 3 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, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "nbt_server/nbt_server.h" #include "nbt_server/wins/winsdb.h" #include "nbt_server/wins/winsserver.h" #include "system/time.h" #include "libcli/composite/composite.h" #include "smbd/service_task.h" #include "libcli/resolve/resolve.h" struct wins_dns_proxy_state { struct nbt_name_socket *nbtsock; struct nbt_name_packet *packet; struct socket_address *src; }; static void nbtd_wins_dns_proxy_handler(struct composite_context *creq) { NTSTATUS status; struct wins_dns_proxy_state *s = talloc_get_type(creq->async.private_data, struct wins_dns_proxy_state); struct nbt_name *name = &s->packet->questions[0].name; const char *address; const char **addresses; uint16_t nb_flags = 0; /* TODO: ... */ status = resolve_name_recv(creq, s->packet, &address); if (!NT_STATUS_IS_OK(status)) { goto notfound; } addresses = str_list_add(NULL, address); talloc_steal(s->packet, addresses); if (!addresses) goto notfound; nbtd_name_query_reply(s->nbtsock, s->packet, s->src, name, 0, nb_flags, addresses); return; notfound: nbtd_negative_name_query_reply(s->nbtsock, s->packet, s->src); } /* dns proxy query a name */ void nbtd_wins_dns_proxy_query(struct nbt_name_socket *nbtsock, struct nbt_name_packet *packet, struct socket_address *src) { struct nbt_name *name = &packet->questions[0].name; struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private, struct nbtd_interface); struct wins_dns_proxy_state *s; struct composite_context *creq; struct resolve_context *resolve_ctx; s = talloc(nbtsock, struct wins_dns_proxy_state); if (!s) goto failed; s->nbtsock = nbtsock; s->packet = talloc_steal(s, packet); s->src = src; if (!talloc_reference(s, src)) { goto failed; } resolve_ctx = resolve_context_init(s); if (resolve_ctx == NULL) goto failed; resolve_context_add_host_method(resolve_ctx); creq = resolve_name_send(resolve_ctx, name, iface->nbtsrv->task->event_ctx); if (!creq) goto failed; creq->async.fn = nbtd_wins_dns_proxy_handler; creq->async.private_data= s; return; failed: nbtd_negative_name_query_reply(nbtsock, packet, src); }