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[GNUnet-SVN] [taler-exchange] 01/02: delete useless copy of code
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gnunet |
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Subject: |
[GNUnet-SVN] [taler-exchange] 01/02: delete useless copy of code |
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Date: |
Mon, 22 Oct 2018 20:21:53 +0200 |
This is an automated email from the git hooks/post-receive script.
grothoff pushed a commit to branch master
in repository exchange.
commit 2d9f1babb7630ab2bebaac461fdb242f4a597d41
Author: Christian Grothoff <address@hidden>
AuthorDate: Mon Oct 22 20:16:10 2018 +0200
delete useless copy of code
---
src/auditor-lib/auditor_api_common.c | 328 -----------------------------------
1 file changed, 328 deletions(-)
diff --git a/src/auditor-lib/auditor_api_common.c
b/src/auditor-lib/auditor_api_common.c
deleted file mode 100644
index de05348f..00000000
--- a/src/auditor-lib/auditor_api_common.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- This file is part of TALER
- Copyright (C) 2015-2017 Taler Systems SA
-
- 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, see
- <http://www.gnu.org/licenses/>
-*/
-/**
- * @file exchange-lib/exchange_api_common.c
- * @brief common functions for the exchange API
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include "taler_json_lib.h"
-#include <gnunet/gnunet_curl_lib.h>
-#include "exchange_api_handle.h"
-#include "taler_signatures.h"
-
-
-/**
- * Verify a coins transaction history as returned by the exchange.
- *
- * @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_EXCHANGE_verify_coin_history (const char *currency,
- const struct TALER_CoinSpendPublicKeyP
*coin_pub,
- json_t *history,
- struct TALER_Amount *total)
-{
- size_t len;
- int add;
- struct TALER_Amount rtotal;
-
- 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;
- }
- GNUNET_assert (GNUNET_OK ==
- TALER_amount_get_zero (currency,
- total));
- GNUNET_assert (GNUNET_OK ==
- TALER_amount_get_zero (currency,
- &rtotal));
- for (size_t off=0;off<len;off++)
- {
- json_t *transaction;
- struct TALER_Amount amount;
- const char *type;
- struct GNUNET_JSON_Specification spec_glob[] = {
- TALER_JSON_spec_amount ("amount",
- &amount),
- GNUNET_JSON_spec_string ("type",
- &type),
- GNUNET_JSON_spec_end()
- };
-
- transaction = json_array_get (history,
- off);
- if (GNUNET_OK !=
- GNUNET_JSON_parse (transaction,
- spec_glob,
- NULL, NULL))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- add = GNUNET_SYSERR;
- if (0 == strcasecmp (type,
- "DEPOSIT"))
- {
- struct TALER_DepositRequestPS dr;
- struct TALER_CoinSpendSignatureP sig;
- struct GNUNET_JSON_Specification spec[] = {
- GNUNET_JSON_spec_fixed_auto ("coin_sig",
- &sig),
- GNUNET_JSON_spec_fixed_auto ("h_contract_terms",
- &dr.h_contract_terms),
- GNUNET_JSON_spec_fixed_auto ("h_wire",
- &dr.h_wire),
- GNUNET_JSON_spec_absolute_time_nbo ("timestamp",
- &dr.timestamp),
- GNUNET_JSON_spec_absolute_time_nbo ("refund_deadline",
- &dr.refund_deadline),
- TALER_JSON_spec_amount_nbo ("deposit_fee",
- &dr.deposit_fee),
- GNUNET_JSON_spec_fixed_auto ("merchant_pub",
- &dr.merchant),
- GNUNET_JSON_spec_end()
- };
-
- if (GNUNET_OK !=
- GNUNET_JSON_parse (transaction,
- spec,
- NULL, NULL))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- dr.purpose.size = htonl (sizeof (dr));
- dr.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_COIN_DEPOSIT);
- TALER_amount_hton (&dr.amount_with_fee,
- &amount);
- dr.coin_pub = *coin_pub;
- 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);
- return GNUNET_SYSERR;
- }
- /* TODO: check that deposit fee and coin value match
- our expectations from /keys! */
- add = GNUNET_YES;
- }
- else if (0 == strcasecmp (type,
- "MELT"))
- {
- struct TALER_RefreshMeltCoinAffirmationPS rm;
- struct TALER_CoinSpendSignatureP sig;
- struct GNUNET_JSON_Specification spec[] = {
- GNUNET_JSON_spec_fixed_auto ("coin_sig",
- &sig),
- GNUNET_JSON_spec_fixed_auto ("rc",
- &rm.rc),
- TALER_JSON_spec_amount_nbo ("melt_fee",
- &rm.melt_fee),
- GNUNET_JSON_spec_end()
- };
-
- if (GNUNET_OK !=
- GNUNET_JSON_parse (transaction,
- spec,
- NULL, NULL))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- rm.purpose.size = htonl (sizeof (rm));
- rm.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_COIN_MELT);
- TALER_amount_hton (&rm.amount_with_fee,
- &amount);
- rm.coin_pub = *coin_pub;
- 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);
- return GNUNET_SYSERR;
- }
- /* TODO: check that deposit fee and coin value match
- our expectations from /keys! */
- add = GNUNET_YES;
- }
- else if (0 == strcasecmp (type,
- "REFUND"))
- {
- struct TALER_RefundRequestPS rr;
- struct TALER_MerchantSignatureP sig;
- struct GNUNET_JSON_Specification spec[] = {
- GNUNET_JSON_spec_fixed_auto ("merchant_sig",
- &sig),
- GNUNET_JSON_spec_fixed_auto ("h_contract_terms",
- &rr.h_contract_terms),
- GNUNET_JSON_spec_fixed_auto ("merchant_pub",
- &rr.merchant),
- GNUNET_JSON_spec_uint64 ("rtransaction_id",
- &rr.rtransaction_id),
- TALER_JSON_spec_amount_nbo ("refund_fee",
- &rr.refund_fee),
- GNUNET_JSON_spec_end()
- };
-
- if (GNUNET_OK !=
- GNUNET_JSON_parse (transaction,
- spec,
- NULL, NULL))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- rr.purpose.size = htonl (sizeof (rr));
- rr.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_REFUND);
- rr.coin_pub = *coin_pub;
- TALER_amount_hton (&rr.refund_amount,
- &amount);
- if (GNUNET_OK !=
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MERCHANT_REFUND,
- &rr.purpose,
- &sig.eddsa_sig,
- &rr.merchant.eddsa_pub))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- /* NOTE: theoretically, we could also check that the given
- merchant_pub and h_contract_terms appear in the
- history under deposits. However, there is really no benefit
- for the exchange to lie here, so not checking is probably OK
- (an auditor ought to check, though). Then again, we similarly
- had no reason to check the merchant's signature (other than a
- well-formendess check). */
- /* TODO: check that deposit fee and coin value match
- our expectations from /keys! */
- add = GNUNET_NO;
- }
- else if (0 == strcasecmp (type,
- "PAYBACK"))
- {
- struct TALER_PaybackConfirmationPS pc;
- struct TALER_ExchangePublicKeyP exchange_pub;
- struct TALER_ExchangeSignatureP exchange_sig;
- struct GNUNET_JSON_Specification spec[] = {
- GNUNET_JSON_spec_fixed_auto ("exchange_sig",
- &exchange_sig),
- GNUNET_JSON_spec_fixed_auto ("exchange_pub",
- &exchange_pub),
- GNUNET_JSON_spec_fixed_auto ("reserve_pub",
- &pc.reserve_pub),
- GNUNET_JSON_spec_absolute_time_nbo ("timestamp",
- &pc.timestamp),
- GNUNET_JSON_spec_end()
- };
-
- if (GNUNET_OK !=
- GNUNET_JSON_parse (transaction,
- spec,
- NULL, NULL))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- pc.purpose.size = htonl (sizeof (pc));
- pc.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_PAYBACK);
- pc.coin_pub = *coin_pub;
- TALER_amount_hton (&pc.payback_amount,
- &amount);
- if (GNUNET_OK !=
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_EXCHANGE_CONFIRM_PAYBACK,
- &pc.purpose,
- &exchange_sig.eddsa_signature,
- &exchange_pub.eddsa_pub))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- add = GNUNET_YES;
- }
- else
- {
- /* signature not supported, new version on server? */
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (GNUNET_YES == add)
- {
- /* This amount should be added to the total */
- if (GNUNET_OK !=
- TALER_amount_add (total,
- total,
- &amount))
- {
- /* overflow in history already!? inconceivable! Bad exchange! */
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- }
- else
- {
- /* This amount should be subtracted from the total.
-
- However, for the implementation, we first *add* up all of
- these negative amounts, as we might get refunds before
- deposits from a semi-evil exchange. Then, at the end, we do
- the subtraction by calculating "total = total - rtotal" */
- GNUNET_assert (GNUNET_NO == add);
- if (GNUNET_OK !=
- TALER_amount_add (&rtotal,
- &rtotal,
- &amount))
- {
- /* overflow in refund history? inconceivable! Bad exchange! */
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- }
- }
-
- /* Finally, subtract 'rtotal' from total to handle the subtractions */
- if (GNUNET_OK !=
- TALER_amount_subtract (total,
- total,
- &rtotal))
- {
- /* underflow in history? inconceivable! Bad exchange! */
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
-
- return GNUNET_OK;
-}
-
-
-/* end of exchange_api_common.c */
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