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/*
This file is part of GNUnet.
(C) 2011 Christian Grothoff (and other contributing authors)
GNUnet 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 3, or (at your
option) any later version.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file core/gnunet-service-core_typemap.h
* @brief management of map that specifies which message types this peer supports
* @author Christian Grothoff
*/
#ifndef GNUNET_SERVICE_CORE_TYPEMAP_H
#define GNUNET_SERVICE_CORE_TYPEMAP_H
#include "gnunet_util_lib.h"
#include "gnunet_transport_service.h"
/**
* Map specifying which message types a peer supports.
*/
struct GSC_TypeMap;
/**
* Add a set of types to our type map.
*/
void
GSC_TYPEMAP_add (const uint16_t *types,
unsigned int tlen);
/**
* Remove a set of types from our type map.
*/
void
GSC_TYPEMAP_remove (const uint16_t *types,
unsigned int tlen);
/**
* Compute a type map message for this peer.
*
* @return this peers current type map message.
*/
struct GNUNET_MessageHeader *
GSC_TYPEMAP_compute_type_map_message (void);
/**
* Extract a type map from a TYPE_MAP message.
*
* @param msg a type map message
* @return NULL on error
*/
struct GSC_TypeMap *
GSC_TYPEMAP_get_from_message (const struct GNUNET_MessageHeader *msg);
/**
* Test if any of the types from the types array is in the
* given type map.
*
* @param map map to test
* @param types array of types
* @param tcnt number of entries in types
* @return GNUNET_YES if a type is in the map, GNUNET_NO if not
*/
int
GSC_TYPEMAP_test_match (const struct GSC_TypeMap *tmap,
const uint16_t *types,
unsigned int tcnt);
/**
* Add additional types to a given typemap.
*
* @param map map to extend (not changed)
* @param types array of types to add
* @param tcnt number of entries in types
* @return updated type map (fresh copy)
*/
struct GSC_TypeMap *
GSC_TYPEMAP_extend (const struct GSC_TypeMap *tmap,
const uint16_t *types,
unsigned int tcnt);
/**
* Create an empty type map.
*
* @param map a type map
*/
struct GSC_TypeMap *
GSC_TYPEMAP_create (void);
/**
* Free the given type map.
*
* @param map a type map
*/
void
GSC_TYPEMAP_destroy (struct GSC_TypeMap *tmap);
/**
* Initialize typemap subsystem.
*/
void
GSC_TYPEMAP_init (void);
/**
* Shutdown typemap subsystem.
*/
void
GSC_TYPEMAP_done (void);
#endif
/* end of gnunet-service-core_typemap.h */
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