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Diffstat (limited to 'src/exchange/taler-exchange-httpd_deposit.c')
-rw-r--r--src/exchange/taler-exchange-httpd_deposit.c497
1 files changed, 0 insertions, 497 deletions
diff --git a/src/exchange/taler-exchange-httpd_deposit.c b/src/exchange/taler-exchange-httpd_deposit.c
deleted file mode 100644
index 0484ab071..000000000
--- a/src/exchange/taler-exchange-httpd_deposit.c
+++ /dev/null
@@ -1,497 +0,0 @@
-/*
- This file is part of TALER
- Copyright (C) 2014-2022 Taler Systems SA
-
- TALER 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, 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 Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License along with
- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file taler-exchange-httpd_deposit.c
- * @brief Handle /deposit requests; parses the POST and JSON and
- * verifies the coin signature before handing things off
- * to the database.
- * @author Florian Dold
- * @author Benedikt Mueller
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include <gnunet/gnunet_util_lib.h>
-#include <gnunet/gnunet_json_lib.h>
-#include <jansson.h>
-#include <microhttpd.h>
-#include <pthread.h>
-#include "taler_json_lib.h"
-#include "taler_mhd_lib.h"
-#include "taler-exchange-httpd_deposit.h"
-#include "taler-exchange-httpd_responses.h"
-#include "taler_exchangedb_lib.h"
-#include "taler-exchange-httpd_keys.h"
-
-
-/**
- * Send confirmation of deposit success to client. This function
- * will create a signed message affirming the given information
- * and return it to the client. By this, the exchange affirms that
- * the coin had sufficient (residual) value for the specified
- * transaction and that it will execute the requested deposit
- * operation with the given wiring details.
- *
- * @param connection connection to the client
- * @param coin_pub public key of the coin
- * @param h_wire hash of wire details
- * @param h_extensions hash of applicable extensions
- * @param h_contract_terms hash of contract details
- * @param exchange_timestamp exchange's timestamp
- * @param refund_deadline until when this deposit be refunded
- * @param wire_deadline until when will the exchange wire the funds
- * @param merchant merchant public key
- * @param amount_without_fee fraction of coin value to deposit, without the fee
- * @return MHD result code
- */
-static MHD_RESULT
-reply_deposit_success (
- struct MHD_Connection *connection,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_MerchantWireHashP *h_wire,
- const struct TALER_ExtensionContractHashP *h_extensions,
- const struct TALER_PrivateContractHashP *h_contract_terms,
- struct GNUNET_TIME_Timestamp exchange_timestamp,
- struct GNUNET_TIME_Timestamp refund_deadline,
- struct GNUNET_TIME_Timestamp wire_deadline,
- const struct TALER_MerchantPublicKeyP *merchant,
- const struct TALER_Amount *amount_without_fee)
-{
- struct TALER_ExchangePublicKeyP pub;
- struct TALER_ExchangeSignatureP sig;
- enum TALER_ErrorCode ec;
-
- if (TALER_EC_NONE !=
- (ec = TALER_exchange_online_deposit_confirmation_sign (
- &TEH_keys_exchange_sign_,
- h_contract_terms,
- h_wire,
- h_extensions,
- exchange_timestamp,
- wire_deadline,
- refund_deadline,
- amount_without_fee,
- coin_pub,
- merchant,
- &pub,
- &sig)))
- {
- return TALER_MHD_reply_with_ec (connection,
- ec,
- NULL);
- }
- return TALER_MHD_REPLY_JSON_PACK (
- connection,
- MHD_HTTP_OK,
- GNUNET_JSON_pack_timestamp ("exchange_timestamp",
- exchange_timestamp),
- GNUNET_JSON_pack_data_auto ("exchange_sig",
- &sig),
- GNUNET_JSON_pack_data_auto ("exchange_pub",
- &pub));
-}
-
-
-/**
- * Closure for #deposit_transaction.
- */
-struct DepositContext
-{
- /**
- * Information about the deposit request.
- */
- const struct TALER_EXCHANGEDB_Deposit *deposit;
-
- /**
- * Our timestamp (when we received the request).
- * Possibly updated by the transaction if the
- * request is idempotent (was repeated).
- */
- struct GNUNET_TIME_Timestamp exchange_timestamp;
-
- /**
- * Hash of the payto URI.
- */
- struct TALER_PaytoHashP h_payto;
-
- /**
- * Row of of the coin in the known_coins table.
- */
- uint64_t known_coin_id;
-
-};
-
-
-/**
- * Execute database transaction for /deposit. Runs the transaction
- * logic; IF it returns a non-error code, the transaction logic MUST
- * NOT queue a MHD response. IF it returns an hard error, the
- * transaction logic MUST queue a MHD response and set @a mhd_ret. IF
- * it returns the soft error code, the function MAY be called again to
- * retry and MUST not queue a MHD response.
- *
- * @param cls a `struct DepositContext`
- * @param connection MHD request context
- * @param[out] mhd_ret set to MHD status on error
- * @return transaction status
- */
-static enum GNUNET_DB_QueryStatus
-deposit_transaction (void *cls,
- struct MHD_Connection *connection,
- MHD_RESULT *mhd_ret)
-{
- struct DepositContext *dc = cls;
- enum GNUNET_DB_QueryStatus qs;
- bool balance_ok;
- bool in_conflict;
-
- qs = TEH_make_coin_known (&dc->deposit->coin,
- connection,
- &dc->known_coin_id,
- mhd_ret);
- if (qs < 0)
- return qs;
- qs = TEH_plugin->do_deposit (TEH_plugin->cls,
- dc->deposit,
- dc->known_coin_id,
- &dc->h_payto,
- false, /* FIXME-OEC: extension blocked #7270 */
- &dc->exchange_timestamp,
- &balance_ok,
- &in_conflict);
- if (qs < 0)
- {
- if (GNUNET_DB_STATUS_SOFT_ERROR == qs)
- return qs;
- TALER_LOG_WARNING ("Failed to store /deposit information in database\n");
- *mhd_ret = TALER_MHD_reply_with_error (connection,
- MHD_HTTP_INTERNAL_SERVER_ERROR,
- TALER_EC_GENERIC_DB_STORE_FAILED,
- "deposit");
- return qs;
- }
- if (in_conflict)
- {
- /* FIXME #7267: conflicting contract != insufficient funds */
- *mhd_ret
- = TEH_RESPONSE_reply_coin_insufficient_funds (
- connection,
- TALER_EC_EXCHANGE_DEPOSIT_CONFLICTING_CONTRACT,
- &dc->deposit->coin.denom_pub_hash,
- &dc->deposit->coin.coin_pub);
- return GNUNET_DB_STATUS_HARD_ERROR;
- }
- if (! balance_ok)
- {
- *mhd_ret
- = TEH_RESPONSE_reply_coin_insufficient_funds (
- connection,
- TALER_EC_EXCHANGE_GENERIC_INSUFFICIENT_FUNDS,
- &dc->deposit->coin.denom_pub_hash,
- &dc->deposit->coin.coin_pub);
- return GNUNET_DB_STATUS_HARD_ERROR;
- }
- TEH_METRICS_num_success[TEH_MT_SUCCESS_DEPOSIT]++;
- return qs;
-}
-
-
-MHD_RESULT
-TEH_handler_deposit (struct MHD_Connection *connection,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const json_t *root)
-{
- struct DepositContext dc;
- struct TALER_EXCHANGEDB_Deposit deposit;
- const char *payto_uri;
- struct GNUNET_JSON_Specification spec[] = {
- GNUNET_JSON_spec_string ("merchant_payto_uri",
- &payto_uri),
- GNUNET_JSON_spec_fixed_auto ("wire_salt",
- &deposit.wire_salt),
- TALER_JSON_spec_amount ("contribution",
- TEH_currency,
- &deposit.amount_with_fee),
- GNUNET_JSON_spec_fixed_auto ("denom_pub_hash",
- &deposit.coin.denom_pub_hash),
- TALER_JSON_spec_denom_sig ("ub_sig",
- &deposit.coin.denom_sig),
- GNUNET_JSON_spec_fixed_auto ("merchant_pub",
- &deposit.merchant_pub),
- GNUNET_JSON_spec_fixed_auto ("h_contract_terms",
- &deposit.h_contract_terms),
- GNUNET_JSON_spec_mark_optional (
- GNUNET_JSON_spec_fixed_auto ("h_age_commitment",
- &deposit.coin.h_age_commitment),
- &deposit.coin.no_age_commitment),
- GNUNET_JSON_spec_fixed_auto ("coin_sig",
- &deposit.csig),
- GNUNET_JSON_spec_timestamp ("timestamp",
- &deposit.timestamp),
- GNUNET_JSON_spec_mark_optional (
- GNUNET_JSON_spec_timestamp ("refund_deadline",
- &deposit.refund_deadline),
- NULL),
- GNUNET_JSON_spec_timestamp ("wire_transfer_deadline",
- &deposit.wire_deadline),
- GNUNET_JSON_spec_end ()
- };
- struct TALER_MerchantWireHashP h_wire;
-
- memset (&deposit,
- 0,
- sizeof (deposit));
- deposit.coin.coin_pub = *coin_pub;
- {
- enum GNUNET_GenericReturnValue res;
-
- res = TALER_MHD_parse_json_data (connection,
- root,
- spec);
- if (GNUNET_SYSERR == res)
- {
- GNUNET_break (0);
- return MHD_NO; /* hard failure */
- }
- if (GNUNET_NO == res)
- {
- GNUNET_break_op (0);
- return MHD_YES; /* failure */
- }
- }
- /* validate merchant's wire details (as far as we can) */
- {
- char *emsg;
-
- emsg = TALER_payto_validate (payto_uri);
- if (NULL != emsg)
- {
- MHD_RESULT ret;
-
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- ret = TALER_MHD_reply_with_error (connection,
- MHD_HTTP_BAD_REQUEST,
- TALER_EC_GENERIC_PARAMETER_MALFORMED,
- emsg);
- GNUNET_free (emsg);
- return ret;
- }
- }
- if (GNUNET_TIME_timestamp_cmp (deposit.refund_deadline,
- >,
- deposit.wire_deadline))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_BAD_REQUEST,
- TALER_EC_EXCHANGE_DEPOSIT_REFUND_DEADLINE_AFTER_WIRE_DEADLINE,
- NULL);
- }
- if (GNUNET_TIME_absolute_is_never (deposit.wire_deadline.abs_time))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_BAD_REQUEST,
- TALER_EC_EXCHANGE_DEPOSIT_WIRE_DEADLINE_IS_NEVER,
- NULL);
- }
- deposit.receiver_wire_account = (char *) payto_uri;
- TALER_payto_hash (payto_uri,
- &dc.h_payto);
- TALER_merchant_wire_signature_hash (payto_uri,
- &deposit.wire_salt,
- &h_wire);
- dc.deposit = &deposit;
-
- /* new deposit */
- dc.exchange_timestamp = GNUNET_TIME_timestamp_get ();
- /* check denomination exists and is valid */
- {
- struct TEH_DenominationKey *dk;
- MHD_RESULT mret;
-
- dk = TEH_keys_denomination_by_hash (&deposit.coin.denom_pub_hash,
- connection,
- &mret);
- if (NULL == dk)
- {
- GNUNET_JSON_parse_free (spec);
- return mret;
- }
- if (0 > TALER_amount_cmp (&dk->meta.value,
- &deposit.amount_with_fee))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_BAD_REQUEST,
- TALER_EC_EXCHANGE_GENERIC_AMOUNT_EXCEEDS_DENOMINATION_VALUE,
- NULL);
- }
- if (GNUNET_TIME_absolute_is_past (dk->meta.expire_deposit.abs_time))
- {
- /* This denomination is past the expiration time for deposits */
- GNUNET_JSON_parse_free (spec);
- return TEH_RESPONSE_reply_expired_denom_pub_hash (
- connection,
- &deposit.coin.denom_pub_hash,
- TALER_EC_EXCHANGE_GENERIC_DENOMINATION_EXPIRED,
- "DEPOSIT");
- }
- if (GNUNET_TIME_absolute_is_future (dk->meta.start.abs_time))
- {
- /* This denomination is not yet valid */
- GNUNET_JSON_parse_free (spec);
- return TEH_RESPONSE_reply_expired_denom_pub_hash (
- connection,
- &deposit.coin.denom_pub_hash,
- TALER_EC_EXCHANGE_GENERIC_DENOMINATION_VALIDITY_IN_FUTURE,
- "DEPOSIT");
- }
- if (dk->recoup_possible)
- {
- /* This denomination has been revoked */
- GNUNET_JSON_parse_free (spec);
- return TEH_RESPONSE_reply_expired_denom_pub_hash (
- connection,
- &deposit.coin.denom_pub_hash,
- TALER_EC_EXCHANGE_GENERIC_DENOMINATION_REVOKED,
- "DEPOSIT");
- }
- if (dk->denom_pub.cipher != deposit.coin.denom_sig.cipher)
- {
- /* denomination cipher and denomination signature cipher not the same */
- GNUNET_JSON_parse_free (spec);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_BAD_REQUEST,
- TALER_EC_EXCHANGE_GENERIC_CIPHER_MISMATCH,
- NULL);
- }
-
- deposit.deposit_fee = dk->meta.fees.deposit;
- /* check coin signature */
- switch (dk->denom_pub.cipher)
- {
- case TALER_DENOMINATION_RSA:
- TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_RSA]++;
- break;
- case TALER_DENOMINATION_CS:
- TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_CS]++;
- break;
- default:
- break;
- }
- if (GNUNET_YES !=
- TALER_test_coin_valid (&deposit.coin,
- &dk->denom_pub))
- {
- TALER_LOG_WARNING ("Invalid coin passed for /deposit\n");
- GNUNET_JSON_parse_free (spec);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_FORBIDDEN,
- TALER_EC_EXCHANGE_DENOMINATION_SIGNATURE_INVALID,
- NULL);
- }
- }
- if (0 < TALER_amount_cmp (&deposit.deposit_fee,
- &deposit.amount_with_fee))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_BAD_REQUEST,
- TALER_EC_EXCHANGE_DEPOSIT_NEGATIVE_VALUE_AFTER_FEE,
- NULL);
- }
-
- TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++;
- if (GNUNET_OK !=
- TALER_wallet_deposit_verify (&deposit.amount_with_fee,
- &deposit.deposit_fee,
- &h_wire,
- &deposit.h_contract_terms,
- &deposit.coin.h_age_commitment,
- NULL /* FIXME: h_extensions! */,
- &deposit.coin.denom_pub_hash,
- deposit.timestamp,
- &deposit.merchant_pub,
- deposit.refund_deadline,
- &deposit.coin.coin_pub,
- &deposit.csig))
- {
- TALER_LOG_WARNING ("Invalid signature on /deposit request\n");
- GNUNET_JSON_parse_free (spec);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_FORBIDDEN,
- TALER_EC_EXCHANGE_DEPOSIT_COIN_SIGNATURE_INVALID,
- NULL);
- }
-
- if (GNUNET_SYSERR ==
- TEH_plugin->preflight (TEH_plugin->cls))
- {
- GNUNET_break (0);
- return TALER_MHD_reply_with_error (connection,
- MHD_HTTP_INTERNAL_SERVER_ERROR,
- TALER_EC_GENERIC_DB_START_FAILED,
- "preflight failure");
- }
-
- /* execute transaction */
- {
- MHD_RESULT mhd_ret;
-
- if (GNUNET_OK !=
- TEH_DB_run_transaction (connection,
- "execute deposit",
- TEH_MT_REQUEST_DEPOSIT,
- &mhd_ret,
- &deposit_transaction,
- &dc))
- {
- GNUNET_JSON_parse_free (spec);
- return mhd_ret;
- }
- }
-
- /* generate regular response */
- {
- struct TALER_Amount amount_without_fee;
- MHD_RESULT res;
-
- GNUNET_assert (0 <=
- TALER_amount_subtract (&amount_without_fee,
- &deposit.amount_with_fee,
- &deposit.deposit_fee));
- res = reply_deposit_success (connection,
- &deposit.coin.coin_pub,
- &h_wire,
- NULL /* FIXME: h_extensions! */,
- &deposit.h_contract_terms,
- dc.exchange_timestamp,
- deposit.refund_deadline,
- deposit.wire_deadline,
- &deposit.merchant_pub,
- &amount_without_fee);
- GNUNET_JSON_parse_free (spec);
- return res;
- }
-}
-
-
-/* end of taler-exchange-httpd_deposit.c */