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/*
This file is part of GNUnet.
Copyright (C) 2009-2013, 2016 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file credential/credential_serialization.h
* @brief API to serialize and deserialize delegation chains
* and credentials
* @author Martin Schanzenbach
*/
#ifndef CREDENTIAL_SERIALIZATION_H
#define CREDENTIAL_SERIALIZATION_H
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_constants.h"
#include "gnunet_credential_service.h"
/**
* Calculate how many bytes we will need to serialize
* the given delegation record
*
* @param ds_count number of delegation chain entries
* @param dsr array of #GNUNET_CREDENTIAL_Delegation
* @return the required size to serialize
*/
size_t
GNUNET_CREDENTIAL_delegation_set_get_size (unsigned int ds_count,
const struct GNUNET_CREDENTIAL_DelegationSet *dsr);
/**
* Serizalize the given delegation record entries
*
* @param d_count number of delegation chain entries
* @param dsr array of #GNUNET_CREDENTIAL_Delegation
* @param dest_size size of the destination
* @param dest where to store the result
* @return the size of the data, -1 on failure
*/
ssize_t
GNUNET_CREDENTIAL_delegation_set_serialize (unsigned int d_count,
const struct GNUNET_CREDENTIAL_DelegationSet *dsr,
size_t dest_size,
char *dest);
/**
* Deserialize the given destination
*
* @param len size of the serialized delegation recird
* @param src the serialized data
* @param d_count the number of delegation chain entries
* @param dsr where to put the delegation chain entries
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
GNUNET_CREDENTIAL_delegation_set_deserialize (size_t len,
const char *src,
unsigned int d_count,
struct GNUNET_CREDENTIAL_DelegationSet *dsr);
/**
* Calculate how many bytes we will need to serialize
* the given delegation chain and credential
*
* @param d_count number of delegation chain entries
* @param dd array of #GNUNET_CREDENTIAL_Delegation
* @param c_count number of credential entries
* @param cd a #GNUNET_CREDENTIAL_Credential
* @return the required size to serialize
*/
size_t
GNUNET_CREDENTIAL_delegation_chain_get_size (unsigned int d_count,
const struct GNUNET_CREDENTIAL_Delegation *dd,
unsigned int c_count,
const struct GNUNET_CREDENTIAL_Credential *cd);
/**
* Serizalize the given delegation chain entries and credential
*
* @param d_count number of delegation chain entries
* @param dd array of #GNUNET_CREDENTIAL_Delegation
* @param c_count number of credential entries
* @param cd a #GNUNET_CREDENTIAL_Credential
* @param dest_size size of the destination
* @param dest where to store the result
* @return the size of the data, -1 on failure
*/
ssize_t
GNUNET_CREDENTIAL_delegation_chain_serialize (unsigned int d_count,
const struct GNUNET_CREDENTIAL_Delegation *dd,
unsigned int c_count,
const struct GNUNET_CREDENTIAL_Credential *cd,
size_t dest_size,
char *dest);
/**
* Deserialize the given destination
*
* @param len size of the serialized delegation chain and cred
* @param src the serialized data
* @param d_count the number of delegation chain entries
* @param dd where to put the delegation chain entries
* @param c_count number of credential entries
* @param cd where to put the credential data
* @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
GNUNET_CREDENTIAL_delegation_chain_deserialize (size_t len,
const char *src,
unsigned int d_count,
struct GNUNET_CREDENTIAL_Delegation *dd,
unsigned int c_count,
struct GNUNET_CREDENTIAL_Credential *cd);
size_t
GNUNET_CREDENTIAL_credentials_get_size (unsigned int c_count,
const struct GNUNET_CREDENTIAL_Credential *cd);
ssize_t
GNUNET_CREDENTIAL_credentials_serialize (unsigned int c_count,
const struct GNUNET_CREDENTIAL_Credential *cd,
size_t dest_size,
char *dest);
int
GNUNET_CREDENTIAL_credentials_deserialize (size_t len,
const char *src,
unsigned int c_count,
struct GNUNET_CREDENTIAL_Credential *cd);
int
GNUNET_CREDENTIAL_credential_serialize (struct GNUNET_CREDENTIAL_Credential *cred,
char **data);
struct GNUNET_CREDENTIAL_Credential*
GNUNET_CREDENTIAL_credential_deserialize (const char* data,
size_t data_size);
#endif
/* end of credential_serialization.h */
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