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/*
This file is part of GNUnet
Copyright (C) 2014, 2015, 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 json/json_generator.c
* @brief helper functions for generating JSON from GNUnet data structures
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_json_lib.h"
/**
* Convert binary data to a JSON string
* with the base32crockford encoding.
*
* @param data binary data
* @param size size of @a data in bytes
* @return json string that encodes @a data
*/
json_t *
GNUNET_JSON_from_data (const void *data,
size_t size)
{
char *buf;
json_t *json;
buf = GNUNET_STRINGS_data_to_string_alloc (data, size);
json = json_string (buf);
GNUNET_free (buf);
return json;
}
/**
* Convert absolute timestamp to a json string.
*
* @param stamp the time stamp
* @return a json string with the timestamp in @a stamp
*/
json_t *
GNUNET_JSON_from_time_abs (struct GNUNET_TIME_Absolute stamp)
{
json_t *j;
char *mystr;
int ret;
GNUNET_assert (GNUNET_OK ==
GNUNET_TIME_round_abs (&stamp));
if (stamp.abs_value_us == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
return json_string ("/never/");
ret = GNUNET_asprintf (&mystr,
"/Date(%llu)/",
(unsigned long long) (stamp.abs_value_us / (1000LL * 1000LL)));
GNUNET_assert (ret > 0);
j = json_string (mystr);
GNUNET_free (mystr);
return j;
}
/**
* Convert absolute timestamp to a json string.
*
* @param stamp the time stamp
* @return a json string with the timestamp in @a stamp
*/
json_t *
GNUNET_JSON_from_time_abs_nbo (struct GNUNET_TIME_AbsoluteNBO stamp)
{
return GNUNET_JSON_from_time_abs (GNUNET_TIME_absolute_ntoh (stamp));
}
/**
* Convert relative timestamp to a json string.
*
* @param stamp the time stamp
* @return a json string with the timestamp in @a stamp
*/
json_t *
GNUNET_JSON_from_time_rel (struct GNUNET_TIME_Relative stamp)
{
json_t *j;
char *mystr;
int ret;
GNUNET_assert (GNUNET_OK ==
GNUNET_TIME_round_rel (&stamp));
if (stamp.rel_value_us == GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us)
return json_string ("/forever/");
ret = GNUNET_asprintf (&mystr,
"/Delay(%llu)/",
(unsigned long long) (stamp.rel_value_us / (1000LL * 1000LL)));
GNUNET_assert (ret > 0);
j = json_string (mystr);
GNUNET_free (mystr);
return j;
}
/**
* Convert RSA public key to JSON.
*
* @param pk public key to convert
* @return corresponding JSON encoding
*/
json_t *
GNUNET_JSON_from_rsa_public_key (const struct GNUNET_CRYPTO_RsaPublicKey *pk)
{
char *buf;
size_t buf_len;
json_t *ret;
buf_len = GNUNET_CRYPTO_rsa_public_key_encode (pk,
&buf);
ret = GNUNET_JSON_from_data (buf,
buf_len);
GNUNET_free (buf);
return ret;
}
/**
* Convert RSA signature to JSON.
*
* @param sig signature to convert
* @return corresponding JSON encoding
*/
json_t *
GNUNET_JSON_from_rsa_signature (const struct GNUNET_CRYPTO_RsaSignature *sig)
{
char *buf;
size_t buf_len;
json_t *ret;
buf_len = GNUNET_CRYPTO_rsa_signature_encode (sig,
&buf);
ret = GNUNET_JSON_from_data (buf,
buf_len);
GNUNET_free (buf);
return ret;
}
/* End of json/json_generator.c */
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