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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-service.h : Abstract class for an email service */

/* 
 *
 * Author : 
 *  Bertrand Guiheneuf <bertrand@helixcode.com>
 *
 * Copyright 1999, 2000 Ximian, Inc. (www.ximian.com)
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of version 2 of the GNU General Public 
 * License as published by the Free Software Foundation.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */


#ifndef CAMEL_SERVICE_H
#define CAMEL_SERVICE_H 1


#ifdef __cplusplus
extern "C" {
#pragma }
#endif /* __cplusplus }*/

#include <netdb.h>
#include <camel/camel-object.h>
#include <camel/camel-url.h>
#include <camel/camel-provider.h>
#include <camel/camel-operation.h>

#define CAMEL_SERVICE_TYPE     (camel_service_get_type ())
#define CAMEL_SERVICE(obj)     (CAMEL_CHECK_CAST((obj), CAMEL_SERVICE_TYPE, CamelService))
#define CAMEL_SERVICE_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_SERVICE_TYPE, CamelServiceClass))
#define CAMEL_IS_SERVICE(o)    (CAMEL_CHECK_TYPE((o), CAMEL_SERVICE_TYPE))

enum {
    CAMEL_SERVICE_ARG_FIRST  = CAMEL_ARG_FIRST + 100,
    CAMEL_SERVICE_ARG_USERNAME,
    CAMEL_SERVICE_ARG_AUTH,
    CAMEL_SERVICE_ARG_HOSTNAME,
    CAMEL_SERVICE_ARG_PORT,
    CAMEL_SERVICE_ARG_PATH,
};

#define CAMEL_SERVICE_USERNAME     (CAMEL_SERVICE_ARG_USERNAME | CAMEL_ARG_STR)
#define CAMEL_SERVICE_AUTH         (CAMEL_SERVICE_ARG_AUTH | CAMEL_ARG_STR)
#define CAMEL_SERVICE_HOSTNAME     (CAMEL_SERVICE_ARG_HOSTNAME | CAMEL_ARG_STR)
#define CAMEL_SERVICE_PORT         (CAMEL_SERVICE_ARG_PORT | CAMEL_ARG_INT)
#define CAMEL_SERVICE_PATH         (CAMEL_SERVICE_ARG_PATH | CAMEL_ARG_STR)

typedef enum {
    CAMEL_SERVICE_DISCONNECTED,
    CAMEL_SERVICE_CONNECTING,
    CAMEL_SERVICE_CONNECTED,
    CAMEL_SERVICE_DISCONNECTING
} CamelServiceConnectionStatus;

struct _CamelService {
    CamelObject parent_object;
    struct _CamelServicePrivate *priv;

    CamelSession *session;
    CamelProvider *provider;
    CamelServiceConnectionStatus status;
    CamelOperation *connect_op;
    CamelURL *url;
};


typedef struct {
    CamelObjectClass parent_class;

    void      (*construct)         (CamelService *service,
                    CamelSession *session,
                    CamelProvider *provider,
                    CamelURL *url,
                    CamelException *ex);

    gboolean  (*connect)           (CamelService *service, 
                    CamelException *ex);
    gboolean  (*disconnect)        (CamelService *service,
                    gboolean clean,
                    CamelException *ex);
    void      (*cancel_connect)    (CamelService *service);

    GList *   (*query_auth_types)  (CamelService *service,
                    CamelException *ex);

    char *    (*get_name)          (CamelService *service,
                    gboolean brief);
    char *    (*get_path)          (CamelService *service);

} CamelServiceClass;


/* query_auth_types returns a GList of these */
typedef struct {
    char *name;               /* user-friendly name */
    char *description;
    char *authproto;
    
    gboolean need_password;   /* needs a password to authenticate */
} CamelServiceAuthType;


/* public methods */
void                camel_service_construct          (CamelService *service,
                              CamelSession *session,
                              CamelProvider *provider,
                              CamelURL *url, 
                              CamelException *ex);
gboolean            camel_service_connect            (CamelService *service, 
                              CamelException *ex);
gboolean            camel_service_disconnect         (CamelService *service,
                              gboolean clean,
                              CamelException *ex);
void                camel_service_cancel_connect     (CamelService *service);
char *              camel_service_get_url            (CamelService *service);
char *              camel_service_get_name           (CamelService *service,
                              gboolean brief);
char *              camel_service_get_path           (CamelService *service);
CamelSession *      camel_service_get_session        (CamelService *service);
CamelProvider *     camel_service_get_provider       (CamelService *service);
GList *             camel_service_query_auth_types   (CamelService *service,
                              CamelException *ex);

#ifdef NEED_ADDRINFO
/* Some of this is copied from GNU's netdb.h

  Copyright (C) 1996-2002, 2003, 2004 Free Software Foundation, Inc.
  This file is part of the GNU C Library.

   The GNU C Library 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.
*/
struct addrinfo {
    int ai_flags;
    int ai_family;
    int ai_socktype;
    int ai_protocol;
    size_t ai_addrlen;
    struct sockaddr *ai_addr;
    char *ai_canonname;
    struct addrinfo *ai_next;
};

#define AI_CANONNAME    0x0002  /* Request for canonical name.  */
#define AI_NUMERICHOST  0x0004  /* Don't use name resolution.  */

/* Error values for `getaddrinfo' function.  */
#define EAI_BADFLAGS      -1    /* Invalid value for `ai_flags' field.  */
#define EAI_NONAME    -2    /* NAME or SERVICE is unknown.  */
#define EAI_AGAIN     -3    /* Temporary failure in name resolution.  */
#define EAI_FAIL      -4    /* Non-recoverable failure in name res.  */
#define EAI_NODATA    -5    /* No address associated with NAME.  */
#define EAI_FAMILY    -6    /* `ai_family' not supported.  */
#define EAI_SOCKTYPE      -7    /* `ai_socktype' not supported.  */
#define EAI_SERVICE   -8    /* SERVICE not supported for `ai_socktype'.  */
#define EAI_ADDRFAMILY    -9    /* Address family for NAME not supported.  */
#define EAI_MEMORY    -10   /* Memory allocation failure.  */
#define EAI_SYSTEM    -11   /* System error returned in `errno'.  */
#define EAI_OVERFLOW      -12   /* Argument buffer overflow.  */

#define NI_MAXHOST      1025
#define NI_MAXSERV      32

#define NI_NUMERICHOST  1   /* Don't try to look up hostname.  */
#define NI_NUMERICSERV 2    /* Don't convert port number to name.  */
#define NI_NOFQDN   4   /* Only return nodename portion.  */
#define NI_NAMEREQD 8   /* Don't return numeric addresses.  */
#define NI_DGRAM    16  /* Look up UDP service rather than TCP.  */
#endif

/* new hostname interfaces */
struct addrinfo *camel_getaddrinfo(const char *name, const char *service,
                   const struct addrinfo *hints, CamelException *ex);
void camel_freeaddrinfo(struct addrinfo *host);
int camel_getnameinfo(const struct sockaddr *sa, socklen_t salen, char **host, char **serv,
              int flags, CamelException *ex);

/* Standard Camel function */
CamelType camel_service_get_type (void);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* CAMEL_SERVICE_H */