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/*
* Copyright (c) 2007-2022 Paul Mattes.
* All rights reserved.
*
* 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 names of Paul Mattes nor the names of his contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL MATTES "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 PAUL MATTES 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.
*/
/*
* resolver.h
* Hostname resolution.
*/
typedef enum {
RHP_SUCCESS = 0, /* success (synchronous) */
RHP_PENDING = 1, /* success (asynchronos pending) */
RHP_FATAL = -1, /* impossible to resolve */
RHP_CANNOT_RESOLVE = -2 /* cannot resolve */
} rhp_t;
#define RHP_IS_ERROR(r) ((r) < 0)
rhp_t resolve_host_and_port(const char *host, char *portname,
unsigned short *pport, struct sockaddr *sa, size_t sa_len,
socklen_t *sa_rlen, char **errmsg, int max, int *nr);
rhp_t resolve_host_and_port_abs(const char *host, char *portname,
unsigned short *pport, struct sockaddr *sa, size_t sa_len,
socklen_t *sa_rlen, char **errmsg, int max, int *nr);
rhp_t resolve_host_and_port_a(const char *host, char *portname,
unsigned short *pport, struct sockaddr *sa, size_t sa_len,
socklen_t *sa_rlen, char **errmsg, int max, int *nr, int *slot,
int pipe, iosrc_t event);
rhp_t collect_host_and_port(int slot, struct sockaddr *sa, size_t sa_len,
socklen_t *sa_rlen, unsigned short *pport, char **errmsg, int max,
int *nr);
void cleanup_host_and_port(int slot);
bool numeric_host_and_port(const struct sockaddr *sa, socklen_t salen,
char *host, size_t hostlen, char *serv, size_t servlen, char **errmsg);
void set_46(bool prefer4, bool prefer6);
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