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/*
This file is part of GNUnet
Copyright (C) 2012, 2013 GNUnet e.V.
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @author Christian Grothoff
*
* @file
* Plugin API for the namestore database backend
*
* @defgroup namestore-plugin Name Store service plugin API
* Plugin API for the namestore database backend
* @{
*/
#ifndef GNUNET_NAMESTORE_PLUGIN_H
#define GNUNET_NAMESTORE_PLUGIN_H
#include "gnunet_util_lib.h"
#include "gnunet_namestore_service.h"
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
/**
* Function called by for each matching record.
*
* @param cls closure
* @param zone_key private key of the zone
* @param label name that is being mapped (at most 255 characters long)
* @param rd_count number of entries in @a rd array
* @param rd array of records with data to store
*/
typedef void (*GNUNET_NAMESTORE_RecordIterator) (void *cls,
const struct GNUNET_CRYPTO_EcdsaPrivateKey *private_key,
const char *label,
unsigned int rd_count,
const struct GNUNET_GNSRECORD_Data *rd);
/**
* @brief struct returned by the initialization function of the plugin
*/
struct GNUNET_NAMESTORE_PluginFunctions
{
/**
* Closure to pass to all plugin functions.
*/
void *cls;
/**
* Store a record in the datastore for which we are the authority.
* Removes any existing record in the same zone with the same name.
*
* @param cls closure (internal context for the plugin)
* @param zone private key of the zone
* @param label name of the record in the zone
* @param rd_count number of entries in @a rd array, 0 to delete all records
* @param rd array of records with data to store
* @return #GNUNET_OK on success, else #GNUNET_SYSERR
*/
int (*store_records) (void *cls,
const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
const char *label,
unsigned int rd_count,
const struct GNUNET_GNSRECORD_Data *rd);
/**
* Lookup records in the datastore for which we are the authority.
*
* @param cls closure (internal context for the plugin)
* @param zone private key of the zone
* @param label name of the record in the zone
* @param iter function to call with the result
* @param iter_cls closure for @a iter
* @return #GNUNET_OK on success, else #GNUNET_SYSERR
*/
int (*lookup_records) (void *cls,
const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
const char *label,
GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls);
/**
* Iterate over the results for a particular zone in the
* datastore. Will return at most one result to the iterator.
*
* @param cls closure (internal context for the plugin)
* @param zone private key of the zone, NULL for all zones
* @param offset offset in the list of all matching records
* @param iter function to call with the result
* @param iter_cls closure for @a iter
* @return #GNUNET_OK on success, #GNUNET_NO if there were no results, #GNUNET_SYSERR on error
*/
int (*iterate_records) (void *cls,
const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
uint64_t offset,
GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls);
/**
* Look for an existing PKEY delegation record for a given public key.
* Returns at most one result to the iterator.
*
* @param cls closure (internal context for the plugin)
* @param zone private key of the zone to look up in, never NULL
* @param value_zone public key of the target zone (value), never NULL
* @param iter function to call with the result
* @param iter_cls closure for @a iter
* @return #GNUNET_OK on success, #GNUNET_NO if there were no results, #GNUNET_SYSERR on error
*/
int (*zone_to_name) (void *cls,
const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
const struct GNUNET_CRYPTO_EcdsaPublicKey *value_zone,
GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls);
};
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif
#endif
/** @} */ /* end of group */
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