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/*
* Copyright (c) 2010 Eric Faurot <eric@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
enum {
ASR_COND,
ASR_YIELD,
ASR_DONE
};
#define ASR_READ 0x01
#define ASR_WRITE 0x02
#define ASR_NOREC 0x01
enum {
ASR_OK = 0,
EASR_MEMORY,
EASR_TIMEDOUT,
EASR_NAMESERVER,
EASR_FAMILY,
EASR_NOTFOUND,
EASR_NAME,
EASR_PARAM
};
struct asr_result {
int ar_err;
const char *ar_errstr;
int ar_cond;
int ar_fd;
int ar_timeout;
int ar_count;
struct addrinfo *ar_ai;
char *ar_cname;
void *ar_data;
size_t ar_datalen;
union {
struct sockaddr sa;
struct sockaddr_in sain;
struct sockaddr_in6 sain6;
} ar_sa;
};
struct asr_query;
struct asr *asr_resolver(const char*);
void asr_done(struct asr*);
int asr_run(struct asr_query*, struct asr_result*);
int asr_run_sync(struct asr_query*, struct asr_result*);
void asr_abort(struct asr_query*);
struct asr_query *asr_query_dns(struct asr*,
uint16_t,
uint16_t,
const char*,
int);
struct asr_query *asr_query_host(struct asr*,
const char*,
int);
struct asr_query *asr_query_addrinfo(struct asr*,
const char*,
const char*,
const struct addrinfo*);
struct asr_query *asr_query_cname(struct asr*,
const struct sockaddr*,
socklen_t);
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