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/*
This file is part of GNUnet
Copyright (C) 2012-2014 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 Martin Schanzenbach
*
* @file
* API to the Credential service
*
* @defgroup credential Credential service
* Credentials
*
* @{
*/
#ifndef GNUNET_CREDENTIAL_SERVICE_H
#define GNUNET_CREDENTIAL_SERVICE_H
#include "gnunet_util_lib.h"
#include "gnunet_gns_service.h"
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
/**
* Connection to the Credential service.
*/
struct GNUNET_CREDENTIAL_Handle;
/**
* Handle to control a lookup operation.
*/
struct GNUNET_CREDENTIAL_LookupRequest;
/**
* Initialize the connection with the Credential service.
*
* @param cfg configuration to use
* @return handle to the Credential service, or NULL on error
*/
struct GNUNET_Credential_Handle *
GNUNET_CREDENTIAL_connect (const struct GNUNET_CONFIGURATION_Handle *cfg);
/**
* Shutdown connection with the Credentail service.
*
* @param handle connection to shut down
*/
void
GNUNET_CREDENTIAL_disconnect (struct GNUNET_CREDENTIAL_Handle *handle);
/**
* Iterator called on obtained result for a Credential lookup.
*
* @param cls closure
* @param issuer the issuer chain
* @param issuer_len length of issuer chain
* @param value the value returned
*/
typedef void
(*GNUNET_CREDENTIAL_LookupResultProcessor) (void *cls,
struct GNUNET_IDENTITY_Ego *issuer,
uint16_t issuer_len,
const struct GNUNET_CREDENTIAL_Value *value);
/**
* Perform an asynchronous lookup operation for a credential.
*
* @param handle handle to the Credential service
* @param credential the credential to look up
* @param subject Ego to check the credential for
* @param proc function to call on result
* @param proc_cls closure for processor
* @return handle to the queued request
*/
struct GNUNET_CREDENTIAL_LookupRequest *
GNUNET_CREDENTIAL_lookup (struct GNUNET_CREDENTIAL_Handle *handle,
const char *credential,
const struct GNUNET_IDENTITY_Ego *subject,
GNUNET_CREDENTIAL_LookupResultProcessor proc,
void *proc_cls);
/**
* Issue a credential to an identity
*
* @param handle handle to the Credential service
* @param issuer the identity that issues the credential
* @param subject the subject of the credential
* @param credential the name of the credential
* @param value the value of the credential
* @return handle to the queued request
*/
struct GNUNET_CREDENTIAL_IssueRequest *
GNUNET_CREDENTIAL_issue (struct GNUNET_CREDENTIAL_Handle *handle,
struct GNUNET_IDENTITY_Ego *issuer,
struct GNUNET_IDENTITY_Ego *subject,
const char *credential,
struct GNUNET_CREDENTIAL_Value *value,
GNUNET_CREDENTIAL_IssueResultProcessor proc,
void *proc_cls);
/**
* Remove a credential
*
* @param handle handle to the Credential service
* @param issuer the identity that issued the credential
* @param subject the subject of the credential
* @param credential the name of the credential
* @return handle to the queued request
*/
struct GNUNET_CREDENTIAL_IssueRequest *
GNUNET_CREDENTIAL_remove (struct GNUNET_CREDENTIAL_Handle *handle,
struct GNUNET_IDENTITY_Ego *issuer,
struct GNUNET_IDENTITY_Ego *subject,
const char *credential,
GNUNET_CREDENTIAL_IssueResultProcessor proc,
void *proc_cls);
/**
* Cancel pending lookup request
*
* @param lr the lookup request to cancel
*/
void
GNUNET_CREDENTIAL_lookup_cancel (struct GNUNET_CREDENTIAL_LookupRequest *lr);
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif
#endif
/** @} */ /* end of group */
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