/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * Copyright (C) 2008 Imendio AB

 *

 * This program 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 of the

 * License, or (at your option) any later version.

 *

 * This program 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 this program; if not, see <https://www.gnu.org/licenses>

 */

#ifndef __LM_RESOLVER_H__

#define __LM_RESOLVER_H__

#include <glib-object.h>

G_BEGIN_DECLS

#define LM_TYPE_RESOLVER            (lm_resolver_get_type ())

#define LM_RESOLVER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), LM_TYPE_RESOLVER, LmResolver))

#define LM_RESOLVER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), LM_TYPE_RESOLVER, LmResolverClass))

#define LM_IS_RESOLVER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LM_TYPE_RESOLVER))

#define LM_IS_RESOLVER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), LM_TYPE_RESOLVER))

#define LM_RESOLVER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), LM_TYPE_RESOLVER, LmResolverClass))

typedef struct LmResolver      LmResolver;

typedef struct LmResolverClass LmResolverClass;

struct LmResolver {

    GObject parent;

};

struct LmResolverClass {

    GObjectClass parent_class;

    /* <vtable> */

    void (*lookup)  (LmResolver  *resolver);

    void (*cancel)  (LmResolver  *resolver);

};

typedef enum {

    LM_RESOLVER_HOST,

    LM_RESOLVER_SRV

} LmResolverType;

typedef enum {

    LM_RESOLVER_RESULT_OK,

    LM_RESOLVER_RESULT_FAILED,

    LM_RESOLVER_RESULT_CANCELLED

} LmResolverResult;

typedef void (*LmResolverCallback) (LmResolver       *resolver,

                                    LmResolverResult  result,

                                    gpointer          user_data);

GType             lm_resolver_get_type          (void);

LmResolver *      lm_resolver_new               (GMainContext       *context);

LmResolver *      lm_resolver_new_for_host      (const gchar        *host,

                                                 LmResolverCallback  callback,

                                                 gpointer            user_data);

LmResolver *      lm_resolver_new_for_service   (const gchar        *domain,

                                                 const gchar        *service,

                                                 const gchar        *protocol,

                                                 LmResolverCallback  callback,

                                                 gpointer            user_data);

void              lm_resolver_lookup            (LmResolver         *resolver);

void              lm_resolver_cancel            (LmResolver         *resolver);

/* To iterate through the results */

struct addrinfo * lm_resolver_results_get_next  (LmResolver         *resolver);

void              lm_resolver_results_reset     (LmResolver         *resolver);

/* Only for sub classes */

gchar *           _lm_resolver_create_srv_string (const gchar        *domain,

                                                  const gchar        *service,

                                                  const gchar        *protocol);

void              _lm_resolver_set_result       (LmResolver         *resolver,

                                                 LmResolverResult    result,

                                                 struct addrinfo    *results);

gboolean        _lm_resolver_parse_srv_response (unsigned char      *srv,

                                                 int                 srv_len,

                                                 gchar            **out_server,

                                                 guint              *out_port);

G_END_DECLS

#endif /* __LM_RESOLVER_H__ */