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Diffstat (limited to 'src/util/json.c')
| -rw-r--r-- | src/util/json.c | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/src/util/json.c b/src/util/json.c deleted file mode 100644 index 6aca7548c..000000000 --- a/src/util/json.c +++ /dev/null @@ -1,400 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 GNUnet e.V. - - TALER 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. - - TALER 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 - TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/> -*/ -/** - * @file util/json.c - * @brief helper functions for JSON processing using libjansson - * @author Sree Harsha Totakura <sreeharsha@totakura.in> - */ -#include "platform.h" -#if HAVE_GNUNET_GNUNET_UTIL_TALER_WALLET_LIB_H -#include <gnunet/gnunet_util_taler_wallet_lib.h> -#endif -#if HAVE_GNUNET_GNUNET_UTIL_LIB_H -#include <gnunet/gnunet_util_lib.h> -#endif -#include "taler_util.h" - -/** - * Shorthand for exit jumps. - */ -#define EXITIF(cond) \ - do { \ - if (cond) { GNUNET_break (0); goto EXITIF_exit; } \ - } while (0) - -/** - * Shorthand for JSON parsing related exit jumps. - */ -#define UNPACK_EXITIF(cond) \ - do { \ - if (cond) { TALER_json_warn (error); goto EXITIF_exit; } \ - } while (0) - - -/** - * Convert a TALER amount to a JSON - * object. - * - * @param amount the amount - * @return a json object describing the amount - */ -json_t * -TALER_json_from_amount (const struct TALER_Amount *amount) -{ - json_t *j; - - if ( (amount->value != (uint64_t) ((json_int_t) amount->value)) || - (0 > ((json_int_t) amount->value)) ) - { - /* Theoretically, json_int_t can be a 32-bit "long", or we might - have a 64-bit value which converted to a 63-bit signed long - long causes problems here. So we check. Note that depending - on the platform, the compiler may be able to statically tell - that at least the first check is always false. */ - GNUNET_break (0); - return NULL; - } - j = json_pack ("{s:s, s:I, s:I}", - "currency", amount->currency, - "value", (json_int_t) amount->value, - "fraction", (json_int_t) amount->fraction); - GNUNET_assert (NULL != j); - 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 * -TALER_json_from_abs (struct GNUNET_TIME_Absolute stamp) -{ - json_t *j; - char *mystr; - int ret; - - GNUNET_assert (GNUNET_OK == - TALER_round_abs_time (&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 RSA public key to JSON. - * - * @param pk public key to convert - * @return corresponding JSON encoding - */ -json_t * -TALER_json_from_rsa_public_key (struct GNUNET_CRYPTO_rsa_PublicKey *pk) -{ - char *buf; - size_t buf_len; - json_t *ret; - - buf_len = GNUNET_CRYPTO_rsa_public_key_encode (pk, - &buf); - ret = TALER_json_from_data (buf, - buf_len); - GNUNET_free (buf); - return ret; -} - - -/** - * Convert JSON to RSA public key. - * - * @param json JSON encoding to convert - * @return corresponding public key - */ -struct GNUNET_CRYPTO_rsa_PublicKey * -TALER_json_to_rsa_public_key (json_t *json) -{ - const char *enc; - char *buf; - size_t len; - size_t buf_len; - struct GNUNET_CRYPTO_rsa_PublicKey *pk; - - buf = NULL; - EXITIF (NULL == (enc = json_string_value (json))); - len = strlen (enc); - buf_len = (len * 5) / 8; - buf = GNUNET_malloc (buf_len); - EXITIF (GNUNET_OK != - GNUNET_STRINGS_string_to_data (enc, - len, - buf, - buf_len)); - EXITIF (NULL == (pk = GNUNET_CRYPTO_rsa_public_key_decode (buf, - buf_len))); - GNUNET_free (buf); - return pk; - EXITIF_exit: - GNUNET_free_non_null (buf); - return NULL; -} - - -/** - * Convert JSON to RSA signature. - * - * @param json JSON encoding to convert - * @return corresponding signature - */ -struct GNUNET_CRYPTO_rsa_Signature * -TALER_json_to_rsa_signature (json_t *json) -{ - const char *enc; - char *buf; - size_t len; - size_t buf_len; - struct GNUNET_CRYPTO_rsa_Signature *sig; - - buf = NULL; - EXITIF (NULL == (enc = json_string_value (json))); - len = strlen (enc); - buf_len = (len * 5) / 8; - buf = GNUNET_malloc (buf_len); - EXITIF (GNUNET_OK != - GNUNET_STRINGS_string_to_data (enc, - len, - buf, - buf_len)); - EXITIF (NULL == (sig = GNUNET_CRYPTO_rsa_signature_decode (buf, - buf_len))); - GNUNET_free (buf); - return sig; - EXITIF_exit: - GNUNET_free_non_null (buf); - return NULL; -} - - -/** - * Convert RSA signature to JSON. - * - * @param sig signature to convert - * @return corresponding JSON encoding - */ -json_t * -TALER_json_from_rsa_signature (struct GNUNET_CRYPTO_rsa_Signature *sig) -{ - char *buf; - size_t buf_len; - json_t *ret; - - buf_len = GNUNET_CRYPTO_rsa_signature_encode (sig, - &buf); - ret = TALER_json_from_data (buf, - buf_len); - GNUNET_free (buf); - return ret; -} - - -/** - * 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 * -TALER_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; -} - - -/** - * Parse given JSON object to Amount - * - * @param json the json object representing Amount - * @param[out] r_amount where the amount has to be written - * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error - */ -int -TALER_json_to_amount (json_t *json, - struct TALER_Amount *r_amount) -{ - json_int_t value; - json_int_t fraction; - const char *currency; - - memset (r_amount, - 0, - sizeof (struct TALER_Amount)); - if (0 != json_unpack (json, - "{s:I, s:I, s:s}", - "value", &value, - "fraction", &fraction, - "currency", ¤cy)) - { - char *json_enc; - - if (NULL == (json_enc = json_dumps (json, - JSON_COMPACT | JSON_ENCODE_ANY))) - { - GNUNET_break (0); - return GNUNET_SYSERR; - } - GNUNET_log (GNUNET_ERROR_TYPE_WARNING, - "Malformed JSON amount: %s\n", - json_enc); - free (json_enc); - return GNUNET_SYSERR; - } - if ( (value < 0) || - (fraction < 0) || - (value > UINT64_MAX) || - (fraction > UINT32_MAX) ) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (strlen (currency) >= TALER_CURRENCY_LEN) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - r_amount->value = (uint64_t) value; - r_amount->fraction = (uint32_t) fraction; - strcpy (r_amount->currency, currency); - (void) TALER_amount_normalize (r_amount); - return GNUNET_OK; -} - - -/** - * Parse given JSON object to absolute time. - * - * @param json the json object representing Amount - * @param[out] abs where the amount has to be written - * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error - */ -int -TALER_json_to_abs (json_t *json, - struct GNUNET_TIME_Absolute *abs) -{ - const char *val; - unsigned long long int tval; - - val = json_string_value (json); - if (NULL == val) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if ( (0 == strcasecmp (val, - "/forever/")) || - (0 == strcasecmp (val, - "/never/")) ) - { - *abs = GNUNET_TIME_UNIT_FOREVER_ABS; - return GNUNET_OK; - } - if (1 != sscanf (val, - "/Date(%llu)/", - &tval)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - /* Time is in seconds in JSON, but in microseconds in GNUNET_TIME_Absolute */ - abs->abs_value_us = tval * 1000LL * 1000LL; - if ( (abs->abs_value_us) / 1000LL / 1000LL != tval) - { - /* Integer overflow */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Parse given JSON object to data - * - * @param json the json object representing data - * @param out the pointer to hold the parsed data. - * @param out_size the size of @a out - * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error - */ -int -TALER_json_to_data (json_t *json, - void *out, - size_t out_size) -{ - const char *enc; - unsigned int len; - - EXITIF (NULL == (enc = json_string_value (json))); - len = strlen (enc); - EXITIF (((len * 5) / 8) != out_size); - EXITIF (GNUNET_OK != GNUNET_STRINGS_string_to_data (enc, len, out, out_size)); - return GNUNET_OK; - EXITIF_exit: - return GNUNET_SYSERR; -} - - -/** - * Hash a JSON for binary signing. - * - * @param[in] json some JSON value - * @param[out] hc resulting hash code - * @return #GNUNET_OK on success, #GNUNET_SYSERR on error - */ -int -TALER_hash_json (json_t *json, - struct GNUNET_HashCode *hc) -{ - char *wire_enc; - size_t len; - - if (NULL == (wire_enc = json_dumps (json, - JSON_COMPACT | JSON_SORT_KEYS))) - return GNUNET_SYSERR; - len = strlen (wire_enc) + 1; - GNUNET_CRYPTO_hash (wire_enc, - len, - hc); - free (wire_enc); - return GNUNET_OK; -} - - -/* End of util/json.c */ |