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/*
This file is part of GNUnet
(C) 2012 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 include/gnunet_gns_service.h
* @brief API to the GNS service
* @author Martin Schanzenbach
*
* TODO:
* - decide what goes into storage API and what into GNS-service API
* - decide where to pass/expose/check keys / signatures
* - are GNS private keys per peer or per user?
*/
#ifndef GNUNET_GNS_SERVICE_H
#define GNUNET_GNS_SERVICE_H
#include "gnunet_util_lib.h"
#include "gnunet_namestore_service.h"
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
/**
* Connection to the GNS service.
*/
struct GNUNET_GNS_Handle;
/**
* Handle to control a get operation.
*/
struct GNUNET_GNS_LookupHandle;
/**
* Record types
* Based on GNUNET_DNSPARSER_TYPEs (standard DNS)
*/
enum GNUNET_GNS_RecordType
{
/* Standard DNS */
GNUNET_GNS_RECORD_TYPE_A = 1,
GNUNET_GNS_RECORD_TYPE_NS = 2,
GNUNET_GNS_RECORD_TYPE_CNAME = 5,
GNUNET_GNS_RECORD_TYPE_SOA = 6,
GNUNET_GNS_RECORD_TYPE_PTR = 12,
GNUNET_GNS_RECORD_MX = 15,
GNUNET_GNS_RECORD_TXT = 16,
GNUNET_GNS_RECORD_AAAA = 28,
/* GNS specific */
GNUNET_GNS_RECORD_PKEY = 256
};
/**
* Initialize the connection with the GNS service.
* FIXME: Do we need the ht_len?
*
* @param cfg configuration to use
* @param ht_len size of the internal hash table to use for parallel lookups
* @return NULL on error
*/
struct GNUNET_GNS_Handle *
GNUNET_GNS_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
unsigned int ht_len);
/**
* Shutdown connection with the GNS service.
*
* @param handle connection to shut down
*/
void
GNUNET_GNS_disconnect (struct GNUNET_GNS_Handle *handle);
/* *************** Standard API: lookup ******************* */
/**
* Iterator called on each result obtained for a GNS
* lookup
*
* @param cls closure
* @param name "name" of the original lookup
* @param record the records in reply
* @param num_records the number of records in reply
*/
typedef void (*GNUNET_GNS_LookupIterator) (void *cls,
const char * name,
const struct GNUNET_NAMESTORE_RecordData *record,
unsigned int num_records);
/**
* Perform an asynchronous lookup operation on the GNS.
*
* @param handle handle to the GNS service
* @param timeout how long to wait for transmission of this request to the service
* // FIXME: what happens afterwards?
* @param type expected type of the response object
* @param name the name to look up
* @param type the GNUNET_GNS_RecordType to look for
* @param iter function to call on each result
* @param iter_cls closure for iter
*
* @return handle to stop the async get
*/
struct GNUNET_GNS_LookupHandle *
GNUNET_GNS_lookup_start (struct GNUNET_GNS_Handle *handle,
struct GNUNET_TIME_Relative timeout,
const char * name,
enum GNUNET_GNS_RecordType type,
GNUNET_GNS_LookupIterator iter,
void *iter_cls);
/**
* Stop async GNS lookup. Frees associated resources.
*
* @param lookup_handle lookup operation to stop.
*
* On return lookup_handle will no longer be valid, caller
* must not use again!!!
*/
void
GNUNET_GNS_lookup_stop (struct GNUNET_GNS_LookupHandle *lookup_handle);
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif
#endif
/* gnunet_gns_service.h */
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