dnstap.h

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/* dnstap support for Unbound */
 
/*
 * Copyright (c) 2013-2014, Farsight Security, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef UNBOUND_DNSTAP_H
#define UNBOUND_DNSTAP_H
 
#include "dnstap/dnstap_config.h"
 
#ifdef USE_DNSTAP
 
struct config_file;
struct fstrm_io;
struct fstrm_queue;
struct sldns_buffer;
 
struct dt_env {
    struct fstrm_iothr *iothr;

    struct fstrm_iothr_queue *ioq;

    char *identity;

    char *version;

    unsigned len_identity;

    unsigned len_version;

    unsigned log_resolver_query_messages : 1;
    unsigned log_resolver_response_messages : 1;
    unsigned log_client_query_messages : 1;
    unsigned log_client_response_messages : 1;
    unsigned log_forwarder_query_messages : 1;
    unsigned log_forwarder_response_messages : 1;
};

struct dt_env *
dt_create(const char *socket_path, unsigned num_workers);

void
dt_apply_cfg(struct dt_env *env, struct config_file *cfg);

int
dt_init(struct dt_env *env);

void
dt_delete(struct dt_env *env);

void
dt_msg_send_client_query(struct dt_env *env,
             struct sockaddr_storage *qsock,
             enum comm_point_type cptype,
             struct sldns_buffer *qmsg);

void
dt_msg_send_client_response(struct dt_env *env,
                struct sockaddr_storage *qsock,
                enum comm_point_type cptype,
                struct sldns_buffer *rmsg);

void
dt_msg_send_outside_query(struct dt_env *env,
              struct sockaddr_storage *rsock,
              enum comm_point_type cptype,
              uint8_t *zone, size_t zone_len,
              struct sldns_buffer *qmsg);

void
dt_msg_send_outside_response(struct dt_env *env,
                 struct sockaddr_storage *rsock,
                 enum comm_point_type cptype,
                 uint8_t *zone, size_t zone_len,
                 uint8_t *qbuf, size_t qbuf_len,
                 const struct timeval *qtime,
                 const struct timeval *rtime,
                 struct sldns_buffer *rmsg);
 
#endif /* USE_DNSTAP */
 
#endif /* UNBOUND_DNSTAP_H */