996 lines
34 KiB
C
996 lines
34 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2014-2022 Taler Systems SA
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU Affero General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file taler-exchange-httpd_responses.c
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* @brief API for generating generic replies of the exchange; these
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* functions are called TEH_RESPONSE_reply_ and they generate
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* and queue MHD response objects for a given connection.
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* @author Florian Dold
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* @author Benedikt Mueller
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include <zlib.h>
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#include "taler-exchange-httpd_responses.h"
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#include "taler_util.h"
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#include "taler_json_lib.h"
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#include "taler_mhd_lib.h"
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#include "taler-exchange-httpd_keys.h"
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/**
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* Compile the transaction history of a coin into a JSON object.
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*
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* @param coin_pub public key of the coin
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* @param tl transaction history to JSON-ify
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* @return json representation of the @a rh, NULL on error
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*/
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json_t *
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TEH_RESPONSE_compile_transaction_history (
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const struct TALER_CoinSpendPublicKeyP *coin_pub,
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const struct TALER_EXCHANGEDB_TransactionList *tl)
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{
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json_t *history;
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history = json_array ();
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if (NULL == history)
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{
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GNUNET_break (0); /* out of memory!? */
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return NULL;
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}
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for (const struct TALER_EXCHANGEDB_TransactionList *pos = tl;
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NULL != pos;
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pos = pos->next)
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{
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switch (pos->type)
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{
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case TALER_EXCHANGEDB_TT_DEPOSIT:
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{
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const struct TALER_EXCHANGEDB_DepositListEntry *deposit =
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pos->details.deposit;
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struct TALER_MerchantWireHashP h_wire;
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TALER_merchant_wire_signature_hash (deposit->receiver_wire_account,
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&deposit->wire_salt,
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&h_wire);
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#if ENABLE_SANITY_CHECKS
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/* internal sanity check before we hand out a bogus sig... */
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TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++;
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if (GNUNET_OK !=
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TALER_wallet_deposit_verify (
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&deposit->amount_with_fee,
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&deposit->deposit_fee,
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&h_wire,
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&deposit->h_contract_terms,
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&deposit->h_age_commitment,
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&deposit->h_policy,
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&deposit->h_denom_pub,
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deposit->timestamp,
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&deposit->merchant_pub,
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deposit->refund_deadline,
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coin_pub,
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&deposit->csig))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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#endif
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if (0 !=
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json_array_append_new (
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history,
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GNUNET_JSON_PACK (
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GNUNET_JSON_pack_string ("type",
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"DEPOSIT"),
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TALER_JSON_pack_amount ("amount",
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&deposit->amount_with_fee),
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TALER_JSON_pack_amount ("deposit_fee",
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&deposit->deposit_fee),
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GNUNET_JSON_pack_timestamp ("timestamp",
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deposit->timestamp),
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GNUNET_JSON_pack_allow_null (
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GNUNET_JSON_pack_timestamp ("refund_deadline",
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deposit->refund_deadline)),
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GNUNET_JSON_pack_data_auto ("merchant_pub",
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&deposit->merchant_pub),
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GNUNET_JSON_pack_data_auto ("h_contract_terms",
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&deposit->h_contract_terms),
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GNUNET_JSON_pack_data_auto ("h_wire",
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&h_wire),
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GNUNET_JSON_pack_allow_null (
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deposit->no_age_commitment ?
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GNUNET_JSON_pack_string (
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"h_age_commitment", NULL) :
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GNUNET_JSON_pack_data_auto ("h_age_commitment",
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&deposit->h_age_commitment)),
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GNUNET_JSON_pack_data_auto ("coin_sig",
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&deposit->csig))))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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break;
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}
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case TALER_EXCHANGEDB_TT_MELT:
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{
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const struct TALER_EXCHANGEDB_MeltListEntry *melt =
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pos->details.melt;
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const struct TALER_AgeCommitmentHash *phac = NULL;
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#if ENABLE_SANITY_CHECKS
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TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++;
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if (GNUNET_OK !=
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TALER_wallet_melt_verify (
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&melt->amount_with_fee,
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&melt->melt_fee,
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&melt->rc,
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&melt->h_denom_pub,
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&melt->h_age_commitment,
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coin_pub,
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&melt->coin_sig))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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#endif
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/* Age restriction is optional. We communicate a NULL value to
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* JSON_PACK below */
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if (! melt->no_age_commitment)
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phac = &melt->h_age_commitment;
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if (0 !=
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json_array_append_new (
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history,
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GNUNET_JSON_PACK (
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GNUNET_JSON_pack_string ("type",
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"MELT"),
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TALER_JSON_pack_amount ("amount",
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&melt->amount_with_fee),
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TALER_JSON_pack_amount ("melt_fee",
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&melt->melt_fee),
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GNUNET_JSON_pack_data_auto ("rc",
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&melt->rc),
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GNUNET_JSON_pack_allow_null (
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GNUNET_JSON_pack_data_auto ("h_age_commitment",
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phac)),
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GNUNET_JSON_pack_data_auto ("coin_sig",
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&melt->coin_sig))))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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}
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break;
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case TALER_EXCHANGEDB_TT_REFUND:
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{
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const struct TALER_EXCHANGEDB_RefundListEntry *refund =
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pos->details.refund;
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struct TALER_Amount value;
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#if ENABLE_SANITY_CHECKS
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TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++;
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if (GNUNET_OK !=
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TALER_merchant_refund_verify (
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coin_pub,
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&refund->h_contract_terms,
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refund->rtransaction_id,
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&refund->refund_amount,
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&refund->merchant_pub,
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&refund->merchant_sig))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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#endif
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if (0 >
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TALER_amount_subtract (&value,
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&refund->refund_amount,
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&refund->refund_fee))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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if (0 !=
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json_array_append_new (
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history,
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GNUNET_JSON_PACK (
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GNUNET_JSON_pack_string ("type",
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"REFUND"),
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TALER_JSON_pack_amount ("amount",
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&value),
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TALER_JSON_pack_amount ("refund_fee",
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&refund->refund_fee),
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GNUNET_JSON_pack_data_auto ("h_contract_terms",
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&refund->h_contract_terms),
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GNUNET_JSON_pack_data_auto ("merchant_pub",
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&refund->merchant_pub),
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GNUNET_JSON_pack_uint64 ("rtransaction_id",
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refund->rtransaction_id),
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GNUNET_JSON_pack_data_auto ("merchant_sig",
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&refund->merchant_sig))))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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}
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break;
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case TALER_EXCHANGEDB_TT_OLD_COIN_RECOUP:
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{
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struct TALER_EXCHANGEDB_RecoupRefreshListEntry *pr =
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pos->details.old_coin_recoup;
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struct TALER_ExchangePublicKeyP epub;
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struct TALER_ExchangeSignatureP esig;
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if (TALER_EC_NONE !=
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TALER_exchange_online_confirm_recoup_refresh_sign (
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&TEH_keys_exchange_sign_,
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pr->timestamp,
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&pr->value,
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&pr->coin.coin_pub,
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&pr->old_coin_pub,
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&epub,
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&esig))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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/* NOTE: we could also provide coin_pub's coin_sig, denomination key hash and
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the denomination key's RSA signature over coin_pub, but as the
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wallet should really already have this information (and cannot
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check or do anything with it anyway if it doesn't), it seems
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strictly unnecessary. */
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if (0 !=
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json_array_append_new (
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history,
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GNUNET_JSON_PACK (
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GNUNET_JSON_pack_string ("type",
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"OLD-COIN-RECOUP"),
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TALER_JSON_pack_amount ("amount",
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&pr->value),
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GNUNET_JSON_pack_data_auto ("exchange_sig",
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&esig),
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GNUNET_JSON_pack_data_auto ("exchange_pub",
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&epub),
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GNUNET_JSON_pack_data_auto ("coin_pub",
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&pr->coin.coin_pub),
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GNUNET_JSON_pack_timestamp ("timestamp",
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pr->timestamp))))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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break;
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}
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case TALER_EXCHANGEDB_TT_RECOUP:
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{
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const struct TALER_EXCHANGEDB_RecoupListEntry *recoup =
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pos->details.recoup;
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struct TALER_ExchangePublicKeyP epub;
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struct TALER_ExchangeSignatureP esig;
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if (TALER_EC_NONE !=
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TALER_exchange_online_confirm_recoup_sign (
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&TEH_keys_exchange_sign_,
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recoup->timestamp,
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&recoup->value,
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coin_pub,
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&recoup->reserve_pub,
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&epub,
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&esig))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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if (0 !=
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json_array_append_new (
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history,
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GNUNET_JSON_PACK (
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GNUNET_JSON_pack_string ("type",
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"RECOUP"),
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TALER_JSON_pack_amount ("amount",
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&recoup->value),
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GNUNET_JSON_pack_data_auto ("exchange_sig",
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&esig),
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GNUNET_JSON_pack_data_auto ("exchange_pub",
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&epub),
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GNUNET_JSON_pack_data_auto ("reserve_pub",
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&recoup->reserve_pub),
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GNUNET_JSON_pack_data_auto ("coin_sig",
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&recoup->coin_sig),
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GNUNET_JSON_pack_data_auto ("coin_blind",
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&recoup->coin_blind),
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GNUNET_JSON_pack_data_auto ("reserve_pub",
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&recoup->reserve_pub),
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GNUNET_JSON_pack_timestamp ("timestamp",
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recoup->timestamp))))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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}
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break;
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case TALER_EXCHANGEDB_TT_RECOUP_REFRESH:
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{
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struct TALER_EXCHANGEDB_RecoupRefreshListEntry *pr =
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pos->details.recoup_refresh;
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struct TALER_ExchangePublicKeyP epub;
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struct TALER_ExchangeSignatureP esig;
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if (TALER_EC_NONE !=
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TALER_exchange_online_confirm_recoup_refresh_sign (
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&TEH_keys_exchange_sign_,
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pr->timestamp,
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&pr->value,
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coin_pub,
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&pr->old_coin_pub,
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&epub,
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&esig))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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/* NOTE: we could also provide coin_pub's coin_sig, denomination key
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hash and the denomination key's RSA signature over coin_pub, but as
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the wallet should really already have this information (and cannot
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check or do anything with it anyway if it doesn't), it seems
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strictly unnecessary. */
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if (0 !=
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json_array_append_new (
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history,
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GNUNET_JSON_PACK (
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GNUNET_JSON_pack_string ("type",
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"RECOUP-REFRESH"),
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TALER_JSON_pack_amount ("amount",
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&pr->value),
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GNUNET_JSON_pack_data_auto ("exchange_sig",
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&esig),
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GNUNET_JSON_pack_data_auto ("exchange_pub",
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&epub),
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GNUNET_JSON_pack_data_auto ("old_coin_pub",
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&pr->old_coin_pub),
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GNUNET_JSON_pack_data_auto ("coin_sig",
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&pr->coin_sig),
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GNUNET_JSON_pack_data_auto ("coin_blind",
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&pr->coin_blind),
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GNUNET_JSON_pack_timestamp ("timestamp",
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pr->timestamp))))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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break;
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}
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case TALER_EXCHANGEDB_TT_PURSE_DEPOSIT:
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{
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struct TALER_EXCHANGEDB_PurseDepositListEntry *pd
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= pos->details.purse_deposit;
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const struct TALER_AgeCommitmentHash *phac = NULL;
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if (! pd->no_age_commitment)
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phac = &pd->h_age_commitment;
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if (0 !=
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json_array_append_new (
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history,
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GNUNET_JSON_PACK (
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GNUNET_JSON_pack_string ("type",
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"PURSE-DEPOSIT"),
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TALER_JSON_pack_amount ("amount",
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&pd->amount),
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GNUNET_JSON_pack_string ("exchange_base_url",
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NULL == pd->exchange_base_url
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? TEH_base_url
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: pd->exchange_base_url),
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GNUNET_JSON_pack_allow_null (
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GNUNET_JSON_pack_data_auto ("h_age_commitment",
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phac)),
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GNUNET_JSON_pack_data_auto ("purse_pub",
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&pd->purse_pub),
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GNUNET_JSON_pack_bool ("refunded",
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pd->refunded),
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GNUNET_JSON_pack_data_auto ("coin_sig",
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&pd->coin_sig))))
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{
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GNUNET_break (0);
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json_decref (history);
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return NULL;
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}
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break;
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}
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}
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}
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return history;
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}
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MHD_RESULT
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TEH_RESPONSE_reply_unknown_denom_pub_hash (
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struct MHD_Connection *connection,
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const struct TALER_DenominationHashP *dph)
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{
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struct TALER_ExchangePublicKeyP epub;
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struct TALER_ExchangeSignatureP esig;
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struct GNUNET_TIME_Timestamp now;
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enum TALER_ErrorCode ec;
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now = GNUNET_TIME_timestamp_get ();
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ec = TALER_exchange_online_denomination_unknown_sign (
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&TEH_keys_exchange_sign_,
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now,
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dph,
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&epub,
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&esig);
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if (TALER_EC_NONE != ec)
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{
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GNUNET_break (0);
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return TALER_MHD_reply_with_error (connection,
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MHD_HTTP_INTERNAL_SERVER_ERROR,
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ec,
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NULL);
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}
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return TALER_MHD_REPLY_JSON_PACK (
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connection,
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MHD_HTTP_NOT_FOUND,
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TALER_JSON_pack_ec (TALER_EC_EXCHANGE_GENERIC_DENOMINATION_KEY_UNKNOWN),
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GNUNET_JSON_pack_timestamp ("timestamp",
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now),
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GNUNET_JSON_pack_data_auto ("exchange_pub",
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&epub),
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GNUNET_JSON_pack_data_auto ("exchange_sig",
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&esig),
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GNUNET_JSON_pack_data_auto ("h_denom_pub",
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dph));
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}
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MHD_RESULT
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TEH_RESPONSE_reply_expired_denom_pub_hash (
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struct MHD_Connection *connection,
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const struct TALER_DenominationHashP *dph,
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enum TALER_ErrorCode ec,
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const char *oper)
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{
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struct TALER_ExchangePublicKeyP epub;
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struct TALER_ExchangeSignatureP esig;
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enum TALER_ErrorCode ecr;
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struct GNUNET_TIME_Timestamp now
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= GNUNET_TIME_timestamp_get ();
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ecr = TALER_exchange_online_denomination_expired_sign (
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&TEH_keys_exchange_sign_,
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now,
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dph,
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oper,
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&epub,
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&esig);
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if (TALER_EC_NONE != ecr)
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{
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GNUNET_break (0);
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return TALER_MHD_reply_with_error (connection,
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MHD_HTTP_INTERNAL_SERVER_ERROR,
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ec,
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NULL);
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}
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return TALER_MHD_REPLY_JSON_PACK (
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connection,
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MHD_HTTP_GONE,
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TALER_JSON_pack_ec (ec),
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GNUNET_JSON_pack_string ("oper",
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oper),
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GNUNET_JSON_pack_timestamp ("timestamp",
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now),
|
|
GNUNET_JSON_pack_data_auto ("exchange_pub",
|
|
&epub),
|
|
GNUNET_JSON_pack_data_auto ("exchange_sig",
|
|
&esig),
|
|
GNUNET_JSON_pack_data_auto ("h_denom_pub",
|
|
dph));
|
|
}
|
|
|
|
|
|
MHD_RESULT
|
|
TEH_RESPONSE_reply_invalid_denom_cipher_for_operation (
|
|
struct MHD_Connection *connection,
|
|
const struct TALER_DenominationHashP *dph)
|
|
{
|
|
struct TALER_ExchangePublicKeyP epub;
|
|
struct TALER_ExchangeSignatureP esig;
|
|
struct GNUNET_TIME_Timestamp now;
|
|
enum TALER_ErrorCode ec;
|
|
|
|
now = GNUNET_TIME_timestamp_get ();
|
|
ec = TALER_exchange_online_denomination_unknown_sign (
|
|
&TEH_keys_exchange_sign_,
|
|
now,
|
|
dph,
|
|
&epub,
|
|
&esig);
|
|
if (TALER_EC_NONE != ec)
|
|
{
|
|
GNUNET_break (0);
|
|
return TALER_MHD_reply_with_error (connection,
|
|
MHD_HTTP_INTERNAL_SERVER_ERROR,
|
|
ec,
|
|
NULL);
|
|
}
|
|
return TALER_MHD_REPLY_JSON_PACK (
|
|
connection,
|
|
MHD_HTTP_NOT_FOUND,
|
|
TALER_JSON_pack_ec (
|
|
TALER_EC_EXCHANGE_GENERIC_INVALID_DENOMINATION_CIPHER_FOR_OPERATION),
|
|
GNUNET_JSON_pack_timestamp ("timestamp",
|
|
now),
|
|
GNUNET_JSON_pack_data_auto ("exchange_pub",
|
|
&epub),
|
|
GNUNET_JSON_pack_data_auto ("exchange_sig",
|
|
&esig),
|
|
GNUNET_JSON_pack_data_auto ("h_denom_pub",
|
|
dph));
|
|
}
|
|
|
|
|
|
MHD_RESULT
|
|
TEH_RESPONSE_reply_coin_insufficient_funds (
|
|
struct MHD_Connection *connection,
|
|
enum TALER_ErrorCode ec,
|
|
const struct TALER_DenominationHashP *h_denom_pub,
|
|
const struct TALER_CoinSpendPublicKeyP *coin_pub)
|
|
{
|
|
struct TALER_EXCHANGEDB_TransactionList *tl;
|
|
enum GNUNET_DB_QueryStatus qs;
|
|
json_t *history;
|
|
|
|
TEH_plugin->rollback (TEH_plugin->cls);
|
|
if (GNUNET_OK !=
|
|
TEH_plugin->start_read_only (TEH_plugin->cls,
|
|
"get_coin_transactions"))
|
|
{
|
|
return TALER_MHD_reply_with_error (
|
|
connection,
|
|
MHD_HTTP_INTERNAL_SERVER_ERROR,
|
|
TALER_EC_GENERIC_DB_START_FAILED,
|
|
NULL);
|
|
}
|
|
qs = TEH_plugin->get_coin_transactions (TEH_plugin->cls,
|
|
coin_pub,
|
|
&tl);
|
|
TEH_plugin->rollback (TEH_plugin->cls);
|
|
if (0 > qs)
|
|
{
|
|
return TALER_MHD_reply_with_error (
|
|
connection,
|
|
MHD_HTTP_INTERNAL_SERVER_ERROR,
|
|
TALER_EC_GENERIC_DB_FETCH_FAILED,
|
|
NULL);
|
|
}
|
|
|
|
history = TEH_RESPONSE_compile_transaction_history (coin_pub,
|
|
tl);
|
|
TEH_plugin->free_coin_transaction_list (TEH_plugin->cls,
|
|
tl);
|
|
if (NULL == history)
|
|
{
|
|
GNUNET_break (0);
|
|
return TALER_MHD_reply_with_error (connection,
|
|
MHD_HTTP_INTERNAL_SERVER_ERROR,
|
|
TALER_EC_GENERIC_JSON_ALLOCATION_FAILURE,
|
|
"Failed to generated proof of insufficient funds");
|
|
}
|
|
return TALER_MHD_REPLY_JSON_PACK (
|
|
connection,
|
|
TALER_ErrorCode_get_http_status_safe (ec),
|
|
TALER_JSON_pack_ec (ec),
|
|
GNUNET_JSON_pack_data_auto ("coin_pub",
|
|
coin_pub),
|
|
GNUNET_JSON_pack_data_auto ("h_denom_pub",
|
|
h_denom_pub),
|
|
GNUNET_JSON_pack_array_steal ("history",
|
|
history));
|
|
}
|
|
|
|
|
|
json_t *
|
|
TEH_RESPONSE_compile_reserve_history (
|
|
const struct TALER_EXCHANGEDB_ReserveHistory *rh)
|
|
{
|
|
json_t *json_history;
|
|
|
|
json_history = json_array ();
|
|
for (const struct TALER_EXCHANGEDB_ReserveHistory *pos = rh;
|
|
NULL != pos;
|
|
pos = pos->next)
|
|
{
|
|
switch (pos->type)
|
|
{
|
|
case TALER_EXCHANGEDB_RO_BANK_TO_EXCHANGE:
|
|
{
|
|
const struct TALER_EXCHANGEDB_BankTransfer *bank =
|
|
pos->details.bank;
|
|
|
|
if (0 !=
|
|
json_array_append_new (
|
|
json_history,
|
|
GNUNET_JSON_PACK (
|
|
GNUNET_JSON_pack_string ("type",
|
|
"CREDIT"),
|
|
GNUNET_JSON_pack_timestamp ("timestamp",
|
|
bank->execution_date),
|
|
GNUNET_JSON_pack_string ("sender_account_url",
|
|
bank->sender_account_details),
|
|
GNUNET_JSON_pack_uint64 ("wire_reference",
|
|
bank->wire_reference),
|
|
TALER_JSON_pack_amount ("amount",
|
|
&bank->amount))))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
break;
|
|
}
|
|
case TALER_EXCHANGEDB_RO_WITHDRAW_COIN:
|
|
{
|
|
const struct TALER_EXCHANGEDB_CollectableBlindcoin *withdraw
|
|
= pos->details.withdraw;
|
|
|
|
if (0 !=
|
|
json_array_append_new (
|
|
json_history,
|
|
GNUNET_JSON_PACK (
|
|
GNUNET_JSON_pack_string ("type",
|
|
"WITHDRAW"),
|
|
GNUNET_JSON_pack_data_auto ("reserve_sig",
|
|
&withdraw->reserve_sig),
|
|
GNUNET_JSON_pack_data_auto ("h_coin_envelope",
|
|
&withdraw->h_coin_envelope),
|
|
GNUNET_JSON_pack_data_auto ("h_denom_pub",
|
|
&withdraw->denom_pub_hash),
|
|
TALER_JSON_pack_amount ("withdraw_fee",
|
|
&withdraw->withdraw_fee),
|
|
TALER_JSON_pack_amount ("amount",
|
|
&withdraw->amount_with_fee))))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
}
|
|
break;
|
|
case TALER_EXCHANGEDB_RO_RECOUP_COIN:
|
|
{
|
|
const struct TALER_EXCHANGEDB_Recoup *recoup
|
|
= pos->details.recoup;
|
|
struct TALER_ExchangePublicKeyP pub;
|
|
struct TALER_ExchangeSignatureP sig;
|
|
|
|
if (TALER_EC_NONE !=
|
|
TALER_exchange_online_confirm_recoup_sign (
|
|
&TEH_keys_exchange_sign_,
|
|
recoup->timestamp,
|
|
&recoup->value,
|
|
&recoup->coin.coin_pub,
|
|
&recoup->reserve_pub,
|
|
&pub,
|
|
&sig))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
|
|
if (0 !=
|
|
json_array_append_new (
|
|
json_history,
|
|
GNUNET_JSON_PACK (
|
|
GNUNET_JSON_pack_string ("type",
|
|
"RECOUP"),
|
|
GNUNET_JSON_pack_data_auto ("exchange_pub",
|
|
&pub),
|
|
GNUNET_JSON_pack_data_auto ("exchange_sig",
|
|
&sig),
|
|
GNUNET_JSON_pack_timestamp ("timestamp",
|
|
recoup->timestamp),
|
|
TALER_JSON_pack_amount ("amount",
|
|
&recoup->value),
|
|
GNUNET_JSON_pack_data_auto ("coin_pub",
|
|
&recoup->coin.coin_pub))))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
}
|
|
break;
|
|
case TALER_EXCHANGEDB_RO_EXCHANGE_TO_BANK:
|
|
{
|
|
const struct TALER_EXCHANGEDB_ClosingTransfer *closing =
|
|
pos->details.closing;
|
|
struct TALER_ExchangePublicKeyP pub;
|
|
struct TALER_ExchangeSignatureP sig;
|
|
|
|
if (TALER_EC_NONE !=
|
|
TALER_exchange_online_reserve_closed_sign (
|
|
&TEH_keys_exchange_sign_,
|
|
closing->execution_date,
|
|
&closing->amount,
|
|
&closing->closing_fee,
|
|
closing->receiver_account_details,
|
|
&closing->wtid,
|
|
&pos->details.closing->reserve_pub,
|
|
&pub,
|
|
&sig))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
if (0 !=
|
|
json_array_append_new (
|
|
json_history,
|
|
GNUNET_JSON_PACK (
|
|
GNUNET_JSON_pack_string ("type",
|
|
"CLOSING"),
|
|
GNUNET_JSON_pack_string ("receiver_account_details",
|
|
closing->receiver_account_details),
|
|
GNUNET_JSON_pack_data_auto ("wtid",
|
|
&closing->wtid),
|
|
GNUNET_JSON_pack_data_auto ("exchange_pub",
|
|
&pub),
|
|
GNUNET_JSON_pack_data_auto ("exchange_sig",
|
|
&sig),
|
|
GNUNET_JSON_pack_timestamp ("timestamp",
|
|
closing->execution_date),
|
|
TALER_JSON_pack_amount ("amount",
|
|
&closing->amount),
|
|
TALER_JSON_pack_amount ("closing_fee",
|
|
&closing->closing_fee))))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
}
|
|
break;
|
|
case TALER_EXCHANGEDB_RO_PURSE_MERGE:
|
|
{
|
|
const struct TALER_EXCHANGEDB_PurseMerge *merge =
|
|
pos->details.merge;
|
|
|
|
if (0 !=
|
|
json_array_append_new (
|
|
json_history,
|
|
GNUNET_JSON_PACK (
|
|
GNUNET_JSON_pack_string ("type",
|
|
"MERGE"),
|
|
GNUNET_JSON_pack_data_auto ("h_contract_terms",
|
|
&merge->h_contract_terms),
|
|
GNUNET_JSON_pack_data_auto ("merge_pub",
|
|
&merge->merge_pub),
|
|
GNUNET_JSON_pack_uint64 ("min_age",
|
|
merge->min_age),
|
|
GNUNET_JSON_pack_uint64 ("flags",
|
|
merge->flags),
|
|
GNUNET_JSON_pack_data_auto ("purse_pub",
|
|
&merge->purse_pub),
|
|
GNUNET_JSON_pack_data_auto ("reserve_sig",
|
|
&merge->reserve_sig),
|
|
GNUNET_JSON_pack_timestamp ("merge_timestamp",
|
|
merge->merge_timestamp),
|
|
GNUNET_JSON_pack_timestamp ("purse_expiration",
|
|
merge->purse_expiration),
|
|
TALER_JSON_pack_amount ("amount",
|
|
&merge->amount_with_fee),
|
|
TALER_JSON_pack_amount ("purse_fee",
|
|
&merge->purse_fee),
|
|
GNUNET_JSON_pack_bool ("merged",
|
|
merge->merged))))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
}
|
|
break;
|
|
case TALER_EXCHANGEDB_RO_HISTORY_REQUEST:
|
|
{
|
|
const struct TALER_EXCHANGEDB_HistoryRequest *history =
|
|
pos->details.history;
|
|
|
|
if (0 !=
|
|
json_array_append_new (
|
|
json_history,
|
|
GNUNET_JSON_PACK (
|
|
GNUNET_JSON_pack_string ("type",
|
|
"HISTORY"),
|
|
GNUNET_JSON_pack_data_auto ("reserve_sig",
|
|
&history->reserve_sig),
|
|
GNUNET_JSON_pack_timestamp ("request_timestamp",
|
|
history->request_timestamp),
|
|
TALER_JSON_pack_amount ("amount",
|
|
&history->history_fee))))
|
|
{
|
|
GNUNET_break (0);
|
|
json_decref (json_history);
|
|
return NULL;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return json_history;
|
|
}
|
|
|
|
|
|
/**
|
|
* Send reserve history information to client with the
|
|
* message that we have insufficient funds for the
|
|
* requested withdraw operation.
|
|
*
|
|
* @param connection connection to the client
|
|
* @param ebalance expected balance based on our database
|
|
* @param withdraw_amount amount that the client requested to withdraw
|
|
* @param rh reserve history to return
|
|
* @return MHD result code
|
|
*/
|
|
static MHD_RESULT
|
|
reply_withdraw_insufficient_funds (
|
|
struct MHD_Connection *connection,
|
|
const struct TALER_Amount *ebalance,
|
|
const struct TALER_Amount *withdraw_amount,
|
|
const struct TALER_EXCHANGEDB_ReserveHistory *rh)
|
|
{
|
|
json_t *json_history;
|
|
|
|
json_history = TEH_RESPONSE_compile_reserve_history (rh);
|
|
if (NULL == json_history)
|
|
return TALER_MHD_reply_with_error (connection,
|
|
MHD_HTTP_INTERNAL_SERVER_ERROR,
|
|
TALER_EC_EXCHANGE_WITHDRAW_HISTORY_ERROR_INSUFFICIENT_FUNDS,
|
|
NULL);
|
|
return TALER_MHD_REPLY_JSON_PACK (
|
|
connection,
|
|
MHD_HTTP_CONFLICT,
|
|
TALER_JSON_pack_ec (TALER_EC_EXCHANGE_WITHDRAW_INSUFFICIENT_FUNDS),
|
|
TALER_JSON_pack_amount ("balance",
|
|
ebalance),
|
|
TALER_JSON_pack_amount ("requested_amount",
|
|
withdraw_amount),
|
|
GNUNET_JSON_pack_array_steal ("history",
|
|
json_history));
|
|
}
|
|
|
|
|
|
MHD_RESULT
|
|
TEH_RESPONSE_reply_reserve_insufficient_balance (
|
|
struct MHD_Connection *connection,
|
|
const struct TALER_Amount *balance_required,
|
|
const struct TALER_ReservePublicKeyP *reserve_pub)
|
|
{
|
|
struct TALER_EXCHANGEDB_ReserveHistory *rh = NULL;
|
|
struct TALER_Amount balance;
|
|
enum GNUNET_DB_QueryStatus qs;
|
|
MHD_RESULT mhd_ret;
|
|
|
|
if (GNUNET_OK !=
|
|
TEH_plugin->start_read_only (TEH_plugin->cls,
|
|
"get_reserve_history on insufficient balance"))
|
|
{
|
|
GNUNET_break (0);
|
|
return TALER_MHD_reply_with_error (connection,
|
|
MHD_HTTP_INTERNAL_SERVER_ERROR,
|
|
TALER_EC_GENERIC_DB_START_FAILED,
|
|
NULL);
|
|
}
|
|
/* The reserve does not have the required amount (actual
|
|
* amount + withdraw fee) */
|
|
qs = TEH_plugin->get_reserve_history (TEH_plugin->cls,
|
|
reserve_pub,
|
|
&balance,
|
|
&rh);
|
|
TEH_plugin->rollback (TEH_plugin->cls);
|
|
if ( (qs < 0) ||
|
|
(NULL == rh) )
|
|
{
|
|
return TALER_MHD_reply_with_error (connection,
|
|
MHD_HTTP_INTERNAL_SERVER_ERROR,
|
|
TALER_EC_GENERIC_DB_FETCH_FAILED,
|
|
"reserve history");
|
|
}
|
|
mhd_ret = reply_withdraw_insufficient_funds (
|
|
connection,
|
|
&balance,
|
|
balance_required,
|
|
rh);
|
|
TEH_plugin->free_reserve_history (TEH_plugin->cls,
|
|
rh);
|
|
return mhd_ret;
|
|
}
|
|
|
|
|
|
MHD_RESULT
|
|
TEH_RESPONSE_reply_purse_created (
|
|
struct MHD_Connection *connection,
|
|
struct GNUNET_TIME_Timestamp exchange_timestamp,
|
|
const struct TALER_Amount *purse_balance,
|
|
const struct TEH_PurseDetails *pd)
|
|
{
|
|
struct TALER_ExchangePublicKeyP pub;
|
|
struct TALER_ExchangeSignatureP sig;
|
|
enum TALER_ErrorCode ec;
|
|
|
|
if (TALER_EC_NONE !=
|
|
(ec = TALER_exchange_online_purse_created_sign (
|
|
&TEH_keys_exchange_sign_,
|
|
exchange_timestamp,
|
|
pd->purse_expiration,
|
|
&pd->target_amount,
|
|
purse_balance,
|
|
&pd->purse_pub,
|
|
&pd->h_contract_terms,
|
|
&pub,
|
|
&sig)))
|
|
{
|
|
GNUNET_break (0);
|
|
return TALER_MHD_reply_with_ec (connection,
|
|
ec,
|
|
NULL);
|
|
}
|
|
return TALER_MHD_REPLY_JSON_PACK (
|
|
connection,
|
|
MHD_HTTP_OK,
|
|
TALER_JSON_pack_amount ("total_deposited",
|
|
purse_balance),
|
|
GNUNET_JSON_pack_timestamp ("exchange_timestamp",
|
|
exchange_timestamp),
|
|
GNUNET_JSON_pack_data_auto ("exchange_sig",
|
|
&sig),
|
|
GNUNET_JSON_pack_data_auto ("exchange_pub",
|
|
&pub));
|
|
}
|
|
|
|
|
|
MHD_RESULT
|
|
TEH_RESPONSE_reply_kyc_required (struct MHD_Connection *connection,
|
|
const struct TALER_PaytoHashP *h_payto,
|
|
const struct TALER_EXCHANGEDB_KycStatus *kyc)
|
|
{
|
|
return TALER_MHD_REPLY_JSON_PACK (
|
|
connection,
|
|
MHD_HTTP_UNAVAILABLE_FOR_LEGAL_REASONS,
|
|
GNUNET_JSON_pack_data_auto ("h_payto",
|
|
h_payto),
|
|
GNUNET_JSON_pack_uint64 ("requirement_row",
|
|
kyc->requirement_row));
|
|
}
|
|
|
|
|
|
/* end of taler-exchange-httpd_responses.c */
|