diff options
Diffstat (limited to 'src/mint-lib/mint_api_common.c')
| -rw-r--r-- | src/mint-lib/mint_api_common.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/mint-lib/mint_api_common.c b/src/mint-lib/mint_api_common.c deleted file mode 100644 index faba38c74..000000000 --- a/src/mint-lib/mint_api_common.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 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 mint-lib/mint_api_common.c - * @brief common functions for the mint API - * @author Christian Grothoff - */ -#include "platform.h" -#include "mint_api_common.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/** - * Verify a coins transaction history as returned by the mint. - * - * @param currency expected currency for the coin - * @param coin_pub public key of the coin - * @param history history of the coin in json encoding - * @param[out] total how much of the coin has been spent according to @a history - * @return #GNUNET_OK if @a history is valid, #GNUNET_SYSERR if not - */ -int -TALER_MINT_verify_coin_history_ (const char *currency, - const struct TALER_CoinSpendPublicKeyP *coin_pub, - json_t *history, - struct TALER_Amount *total) -{ - size_t len; - size_t off; - - if (NULL == history) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - len = json_array_size (history); - if (0 == len) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - TALER_amount_get_zero (currency, - total); - for (off=0;off<len;off++) - { - json_t *transaction; - struct TALER_Amount amount; - struct TALER_CoinSpendSignatureP sig; - void *details; - size_t details_size; - const char *type; - struct MAJ_Specification spec[] = { - MAJ_spec_amount ("amount", - &amount), - MAJ_spec_string ("type", - &type), - MAJ_spec_fixed_auto ("signature", - &sig), - MAJ_spec_varsize ("details", - &details, - &details_size), - MAJ_spec_end - }; - - transaction = json_array_get (history, - off); - if (GNUNET_OK != - MAJ_parse_json (transaction, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - if (0 == strcasecmp (type, - "DEPOSIT")) - { - const struct TALER_DepositRequestPS *dr; - struct TALER_Amount dr_amount; - - if (details_size != sizeof (struct TALER_DepositRequestPS)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - dr = (const struct TALER_DepositRequestPS *) details; - if (details_size != ntohl (dr->purpose.size)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_COIN_DEPOSIT, - &dr->purpose, - &sig.eddsa_signature, - &coin_pub->eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - - // FIXME: check sig! - TALER_amount_ntoh (&dr_amount, - &dr->amount_with_fee); - if (0 != TALER_amount_cmp (&dr_amount, - &amount)) - { - GNUNET_break (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - } - else if (0 == strcasecmp (type, - "MELT")) - { - const struct TALER_RefreshMeltCoinAffirmationPS *rm; - struct TALER_Amount rm_amount; - - if (details_size != sizeof (struct TALER_RefreshMeltCoinAffirmationPS)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - rm = (const struct TALER_RefreshMeltCoinAffirmationPS *) details; - if (details_size != ntohl (rm->purpose.size)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_COIN_MELT, - &rm->purpose, - &sig.eddsa_signature, - &coin_pub->eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - TALER_amount_ntoh (&rm_amount, - &rm->amount_with_fee); - if (0 != TALER_amount_cmp (&rm_amount, - &amount)) - { - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - } - else - { - /* signature not supported, new version on server? */ - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - if (GNUNET_OK != - TALER_amount_add (total, - total, - &amount)) - { - /* overflow in history already!? inconceivable! Bad mint! */ - GNUNET_break_op (0); - MAJ_parse_free (spec); - return GNUNET_SYSERR; - } - MAJ_parse_free (spec); - } - return GNUNET_OK; -} - - -/* end of mint_api_common.c */ |