diff options
Diffstat (limited to 'src/exchange/taler-exchange-httpd_tracking.c')
| -rw-r--r-- | src/exchange/taler-exchange-httpd_tracking.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/exchange/taler-exchange-httpd_tracking.c b/src/exchange/taler-exchange-httpd_tracking.c new file mode 100644 index 000000000..afb821cb9 --- /dev/null +++ b/src/exchange/taler-exchange-httpd_tracking.c @@ -0,0 +1,165 @@ +/* + This file is part of TALER + Copyright (C) 2014, 2015, 2016 GNUnet e.V. + + 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, If not, see <http://www.gnu.org/licenses/> +*/ +/** + * @file taler-exchange-httpd_tracking.c + * @brief Handle wire transfer tracking-related requests + * @author Christian Grothoff + */ +#include "platform.h" +#include <gnunet/gnunet_util_lib.h> +#include <jansson.h> +#include <microhttpd.h> +#include <pthread.h> +#include "taler_signatures.h" +#include "taler-exchange-httpd_parsing.h" +#include "taler-exchange-httpd_tracking.h" +#include "taler-exchange-httpd_responses.h" + + +/** + * Handle a "/wire/deposits" request. + * + * @param rh context of the handler + * @param connection the MHD connection to handle + * @param[in,out] connection_cls the connection's closure (can be updated) + * @param upload_data upload data + * @param[in,out] upload_data_size number of bytes (left) in @a upload_data + * @return MHD result code + */ +int +TMH_TRACKING_handler_wire_deposits (struct TMH_RequestHandler *rh, + struct MHD_Connection *connection, + void **connection_cls, + const char *upload_data, + size_t *upload_data_size) +{ + struct TALER_WireTransferIdentifierRawP wtid; + int res; + + res = TMH_PARSE_mhd_request_arg_data (connection, + "wtid", + &wtid, + sizeof (struct TALER_WireTransferIdentifierRawP)); + if (GNUNET_SYSERR == res) + return MHD_NO; /* internal error */ + if (GNUNET_NO == res) + return MHD_YES; /* parse error */ + return TMH_DB_execute_wire_deposits (connection, + &wtid); +} + + +/** + * Check the merchant signature, and if it is valid, + * return the wire transfer identifier. + * + * @param connection the MHD connection to handle + * @param tps signed request to execute + * @param merchant_pub public key from the merchant + * @param merchant_sig signature from the merchant (to be checked) + * @param transaction_id transaction ID (in host byte order) + * @return MHD result code + */ +static int +check_and_handle_deposit_wtid_request (struct MHD_Connection *connection, + const struct TALER_DepositTrackPS *tps, + struct TALER_MerchantPublicKeyP *merchant_pub, + struct TALER_MerchantSignatureP *merchant_sig, + uint64_t transaction_id) +{ + if (GNUNET_OK != + GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MERCHANT_DEPOSIT_WTID, + &tps->purpose, + &merchant_sig->eddsa_sig, + &merchant_pub->eddsa_pub)) + { + GNUNET_break_op (0); + return TMH_RESPONSE_reply_signature_invalid (connection, + "merchant_sig"); + } + return TMH_DB_execute_deposit_wtid (connection, + &tps->h_contract, + &tps->h_wire, + &tps->coin_pub, + merchant_pub, + transaction_id); +} + + +/** + * Handle a "/deposit/wtid" request. + * + * @param rh context of the handler + * @param connection the MHD connection to handle + * @param[in,out] connection_cls the connection's closure (can be updated) + * @param upload_data upload data + * @param[in,out] upload_data_size number of bytes (left) in @a upload_data + * @return MHD result code + */ +int +TMH_TRACKING_handler_deposit_wtid (struct TMH_RequestHandler *rh, + struct MHD_Connection *connection, + void **connection_cls, + const char *upload_data, + size_t *upload_data_size) +{ + int res; + json_t *json; + struct TALER_DepositTrackPS tps; + uint64_t transaction_id; + struct TALER_MerchantSignatureP merchant_sig; + struct TMH_PARSE_FieldSpecification spec[] = { + TMH_PARSE_member_fixed ("H_wire", &tps.h_wire), + TMH_PARSE_member_fixed ("H_contract", &tps.h_contract), + TMH_PARSE_member_fixed ("coin_pub", &tps.coin_pub), + TMH_PARSE_member_uint64 ("transaction_id", &transaction_id), + TMH_PARSE_member_fixed ("merchant_pub", &tps.merchant), + TMH_PARSE_member_fixed ("merchant_sig", &merchant_sig), + TMH_PARSE_MEMBER_END + }; + + res = TMH_PARSE_post_json (connection, + connection_cls, + upload_data, + upload_data_size, + &json); + if (GNUNET_SYSERR == res) + return MHD_NO; + if ( (GNUNET_NO == res) || (NULL == json) ) + return MHD_YES; + res = TMH_PARSE_json_data (connection, + json, + spec); + if (GNUNET_OK != res) + { + json_decref (json); + return (GNUNET_NO == res) ? MHD_YES : MHD_NO; + } + tps.purpose.size = htonl (sizeof (struct TALER_DepositTrackPS)); + tps.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_DEPOSIT_WTID); + tps.transaction_id = GNUNET_htonll (transaction_id); + res = check_and_handle_deposit_wtid_request (connection, + &tps, + &tps.merchant, + &merchant_sig, + transaction_id); + TMH_PARSE_release_data (spec); + json_decref (json); + return res; +} + + +/* end of taler-exchange-httpd_tracking.c */ |