/* -*- mode: C; c-file-style: "gnu" -*- */

/* dbus-transport-protected.h Used by subclasses of DBusTransport object (internal to D-Bus implementation)

 *

 * Copyright (C) 2002, 2004  Red Hat Inc.

 * Portion Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

 * Licensed under the Academic Free License version 2.1

 * 

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU 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 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 DBUS_TRANSPORT_PROTECTED_H

#define DBUS_TRANSPORT_PROTECTED_H

#ifdef __SYMBIAN32__

//these are not system headers in build time

#include "dbus-internals.h"

#include <dbus/dbus-errors.h>

#include "dbus-transport.h"

#include "dbus-message-internal.h"

#include "dbus-auth.h"

#include "dbus-resources.h"

#else

#include <dbus/dbus-internals.h>

#include <dbus/dbus-errors.h>

#include <dbus/dbus-transport.h>

#include <dbus/dbus-message-internal.h>

#include <dbus/dbus-auth.h>

#include <dbus/dbus-resources.h>

#endif

DBUS_BEGIN_DECLS

typedef struct DBusTransportVTable DBusTransportVTable;

/**

 * The virtual table that must be implemented to

 * create a new kind of transport.

 */

struct DBusTransportVTable

{

  void        (* finalize)              (DBusTransport *transport);

  /**< The finalize method must free the transport. */

  dbus_bool_t (* handle_watch)          (DBusTransport *transport,

                                         DBusWatch     *watch,

                                         unsigned int   flags);

  /**< The handle_watch method handles reading/writing

   * data as indicated by the flags.

   */

  void        (* disconnect)            (DBusTransport *transport);

  /**< Disconnect this transport. */

  dbus_bool_t (* connection_set)        (DBusTransport *transport);

  /**< Called when transport->connection has been filled in */

  void        (* do_iteration)          (DBusTransport *transport,

                                         unsigned int   flags,

                                         int            timeout_milliseconds);

  /**< Called to do a single "iteration" (block on select/poll

   * followed by reading or writing data).

   */

  void        (* live_messages_changed) (DBusTransport *transport);

  /**< Outstanding messages counter changed */

  dbus_bool_t (* get_socket_fd) (DBusTransport *transport,

                                 int           *fd_p);

  /**< Get socket file descriptor */

};

/**

 * Object representing a transport such as a socket.

 * A transport can shuttle messages from point A to point B,

 * and is the backend for a #DBusConnection.

 *

 */

struct DBusTransport

{

  int refcount;                               /**< Reference count. */

  const DBusTransportVTable *vtable;          /**< Virtual methods for this instance. */

  DBusConnection *connection;                 /**< Connection owning this transport. */

  DBusMessageLoader *loader;                  /**< Message-loading buffer. */

  DBusAuth *auth;                             /**< Authentication conversation */

  DBusCredentials credentials;                /**< Credentials of other end */  

  long max_live_messages_size;                /**< Max total size of received messages. */

  DBusCounter *live_messages_size;            /**< Counter for size of all live messages. */

  char *address;                              /**< Address of the server we are connecting to (#NULL for the server side of a transport) */

  char *expected_guid;                        /**< GUID we expect the server to have, #NULL on server side or if we don't have an expectation */

  DBusAllowUnixUserFunction unix_user_function; /**< Function for checking whether a user is authorized. */

  void *unix_user_data;                         /**< Data for unix_user_function */

  DBusFreeFunction free_unix_user_data;         /**< Function to free unix_user_data */

  unsigned int disconnected : 1;              /**< #TRUE if we are disconnected. */

  unsigned int authenticated : 1;             /**< Cache of auth state; use _dbus_transport_get_is_authenticated() to query value */

  unsigned int send_credentials_pending : 1;  /**< #TRUE if we need to send credentials */

  unsigned int receive_credentials_pending : 1; /**< #TRUE if we need to receive credentials */

  unsigned int is_server : 1;                 /**< #TRUE if on the server side */

  unsigned int unused_bytes_recovered : 1;    /**< #TRUE if we've recovered unused bytes from auth */

};

dbus_bool_t _dbus_transport_init_base     (DBusTransport             *transport,

                                           const DBusTransportVTable *vtable,

                                           const DBusString          *server_guid,

                                           const DBusString          *address);

void        _dbus_transport_finalize_base (DBusTransport             *transport);

typedef enum

{

  DBUS_TRANSPORT_OPEN_NOT_HANDLED,    /**< we aren't in charge of this address type */

  DBUS_TRANSPORT_OPEN_OK,             /**< we set up the listen */

  DBUS_TRANSPORT_OPEN_BAD_ADDRESS,    /**< malformed address */

  DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT /**< well-formed address but failed to set it up */

} DBusTransportOpenResult;

DBusTransportOpenResult _dbus_transport_open_platform_specific (DBusAddressEntry  *entry,

                                                                DBusTransport    **transport_p,

                                                                DBusError         *error);

DBUS_END_DECLS

#endif /* DBUS_TRANSPORT_PROTECTED_H */