/*------------------------------------------------------------------------------
*
* Copyright (c) 2011, EURid. All rights reserved.
* The YADIFA TM software product is provided under the BSD 3-clause license:
* 
* Redistribution and use in source and binary forms, with or without 
* modification, are permitted provided that the following conditions
* are met:
*
*        * Redistributions of source code must retain the above copyright 
*          notice, this list of conditions and the following disclaimer.
*        * 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.
*        * Neither the name of EURid 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.
*
*------------------------------------------------------------------------------
*
*/
/** @defgroup 
 *  @ingroup 
 *  @brief 
 *
 *  
 *
 * @{
 *
 *----------------------------------------------------------------------------*/
#ifndef RESOLV_H_
#define RESOLV_H_

#ifdef __cplusplus
extern "C" {
#endif

#include <dnscore/host_address.h>

/* defaults, minimum and maximum values for the resolver_s struct */

#define RES_PATH_RESOLV_CONF        "/etc/resolv.conf"

#define RES_NAME_SERVERS_MAX        3              /* MAXNS */
    
#define RES_OPTION_ATTEMPTS_DEFAULT 2
#define RES_OPTION_ATTEMPTS_MAX     5

#define RES_OPTION_NDOTS_DEFAULT    1
#define RES_OPTION_NDOTS_MAX        15

#define RES_TIMEOUT_DEFAULT         5
#define RES_TIMEOUT_MAX             30

struct resolver_s 
{
    host_address  *nameserver;

    u8           *sortlist[6];

    union 
    {
        u8            *domain;
        u8         *search[6];
    } name_ascii;
    u8        name_ascii_type;

    u8              resolv_ns;

    u8                  ndots;
    u8               attempts;
    u8                timeout;
    u8            timeout_max;
};

typedef struct resolver_s resolver_s;

void resolv_without_forward(void);
void resolv_print_version(void);


int resolv_normal(void);

ya_result resolv_lookup_name_server(host_address **dest);

ya_result resolv_init(resolver_s *resolv);
ya_result resolv_add_hostaddress(resolver_s *resolv, host_address *address);
ya_result resolv_add_domain(resolver_s *resolv, char *domain);
ya_result resolv_add_search(resolver_s *resolv, char *search);
ya_result resolv_add_ndots(resolver_s *resolv, u8 ndots);
ya_result resolv_add_attemps(resolver_s *resolv, u8 attemps);
ya_result resolv_add_timeout(resolver_s *resolv, u8 timeout);

#define IP_LIST_MAX 16  

#define HAS_IPV4    0x01
#define HAS_IPV6    0x02


ya_result resolv_address(host_address *src, host_address *dst, int ip_flags);
ya_result resolv_host_address_list(host_address *src, host_address *dst);





#ifdef __cplusplus
}
#endif

#endif /* RESOLV_H_ */

/*    ------------------------------------------------------------    */

/** @} */

/*----------------------------------------------------------------------------*/

