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/* SPDX-License-Identifier: LGPL-2.1+ */
#ifndef foosdresolvehfoo
#define foosdresolvehfoo
/***
Copyright 2005-2014 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <inttypes.h>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/types.h>
#include "sd-event.h"
#include "_sd-common.h"
_SD_BEGIN_DECLARATIONS;
/* An opaque sd-resolve session structure */
typedef struct sd_resolve sd_resolve;
/* An opaque sd-resolve query structure */
typedef struct sd_resolve_query sd_resolve_query;
/* A callback on completion */
typedef int (*sd_resolve_getaddrinfo_handler_t)(sd_resolve_query *q, int ret, const struct addrinfo *ai, void *userdata);
typedef int (*sd_resolve_getnameinfo_handler_t)(sd_resolve_query *q, int ret, const char *host, const char *serv, void *userdata);
enum {
SD_RESOLVE_GET_HOST = 1 << 0,
SD_RESOLVE_GET_SERVICE = 1 << 1,
SD_RESOLVE_GET_BOTH = SD_RESOLVE_GET_HOST | SD_RESOLVE_GET_SERVICE,
};
int sd_resolve_default(sd_resolve **ret);
/* Allocate a new sd-resolve session. */
int sd_resolve_new(sd_resolve **ret);
/* Free a sd-resolve session. This destroys all attached
* sd_resolve_query objects automatically. */
sd_resolve* sd_resolve_unref(sd_resolve *resolve);
sd_resolve* sd_resolve_ref(sd_resolve *resolve);
/* Return the UNIX file descriptor to poll() for events on. Use this
* function to integrate sd-resolve with your custom main loop. */
int sd_resolve_get_fd(sd_resolve *resolve);
/* Return the poll() events (a combination of flags like POLLIN,
* POLLOUT, ...) to check for. */
int sd_resolve_get_events(sd_resolve *resolve);
/* Return the poll() timeout to pass. Returns (uint64_t) -1 as
* timeout if no timeout is needed. */
int sd_resolve_get_timeout(sd_resolve *resolve, uint64_t *timeout_usec);
/* Process pending responses. After this function is called, you can
* get the next completed query object(s) using
* sd_resolve_get_next(). */
int sd_resolve_process(sd_resolve *resolve);
/* Wait for a resolve event to complete. */
int sd_resolve_wait(sd_resolve *resolve, uint64_t timeout_usec);
int sd_resolve_get_tid(sd_resolve *resolve, pid_t *tid);
int sd_resolve_attach_event(sd_resolve *resolve, sd_event *e, int64_t priority);
int sd_resolve_detach_event(sd_resolve *resolve);
sd_event *sd_resolve_get_event(sd_resolve *resolve);
/* Issue a name-to-address query on the specified session. The
* arguments are compatible with those of libc's
* getaddrinfo(3). The function returns a new query object. When the
* query is completed, you may retrieve the results using
* sd_resolve_getaddrinfo_done(). */
int sd_resolve_getaddrinfo(sd_resolve *resolve, sd_resolve_query **q, const char *node, const char *service, const struct addrinfo *hints, sd_resolve_getaddrinfo_handler_t callback, void *userdata);
/* Issue an address-to-name query on the specified session. The
* arguments are compatible with those of libc's
* getnameinfo(3). The function returns a new query object. When the
* query is completed, you may retrieve the results using
* sd_resolve_getnameinfo_done(). Set gethost (resp. getserv) to non-zero
* if you want to query the hostname (resp. the service name). */
int sd_resolve_getnameinfo(sd_resolve *resolve, sd_resolve_query **q, const struct sockaddr *sa, socklen_t salen, int flags, uint64_t get, sd_resolve_getnameinfo_handler_t callback, void *userdata);
sd_resolve_query *sd_resolve_query_ref(sd_resolve_query* q);
sd_resolve_query *sd_resolve_query_unref(sd_resolve_query* q);
/* Returns non-zero when the query operation specified by q has been completed. */
int sd_resolve_query_is_done(sd_resolve_query*q);
void *sd_resolve_query_get_userdata(sd_resolve_query *q);
void *sd_resolve_query_set_userdata(sd_resolve_query *q, void *userdata);
sd_resolve *sd_resolve_query_get_resolve(sd_resolve_query *q);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_resolve, sd_resolve_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_resolve_query, sd_resolve_query_unref);
_SD_END_DECLARATIONS;
#endif
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