diff options
Diffstat (limited to 'src/exchange/taler-exchange-httpd_kyc-check.c')
| -rw-r--r-- | src/exchange/taler-exchange-httpd_kyc-check.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/exchange/taler-exchange-httpd_kyc-check.c b/src/exchange/taler-exchange-httpd_kyc-check.c new file mode 100644 index 00000000..1e29ba2c --- /dev/null +++ b/src/exchange/taler-exchange-httpd_kyc-check.c @@ -0,0 +1,168 @@ +/* + This file is part of TALER + Copyright (C) 2021 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_kyc-check.c + * @brief Handle request for generic KYC check. + * @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_signatures.h" +#include "taler-exchange-httpd_keys.h" +#include "taler-exchange-httpd_kyc-wallet.h" +#include "taler-exchange-httpd_responses.h" + + +/** + * Context for the request. + */ +struct KycCheckContext +{ + /** + * UUID being checked. + */ + uint64_t payment_target_uuid; + + /** + * Current KYC status. + */ + struct TALER_EXCHANGEDB_KycStatus kyc; + + /** + * Hash of the payto:// URI we are confirming to + * have finished the KYC for. + */ + struct GNUNET_HashCode h_payto; +}; + + +/** + * Function implementing database transaction to check wallet's KYC status. + * 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 closure with a `struct KycCheckContext *` + * @param connection MHD request which triggered the transaction + * @param[out] mhd_ret set to MHD response status for @a connection, + * if transaction failed (!) + * @return transaction status + */ +static enum GNUNET_DB_QueryStatus +kyc_check (void *cls, + struct MHD_Connection *connection, + MHD_RESULT *mhd_ret) +{ + struct KycCheckContext *kcc = cls; + enum GNUNET_DB_QueryStatus qs; + + qs = TEH_plugin->select_kyc_status (TEH_plugin->cls, + kcc->payment_target_uuid, + &kcc->h_payto, + &kcc->kyc); + if (qs < 0) + { + if (GNUNET_DB_STATUS_SOFT_ERROR == qs) + return qs; + GNUNET_break (0); + *mhd_ret = TALER_MHD_reply_with_error (connection, + MHD_HTTP_INTERNAL_SERVER_ERROR, + TALER_EC_GENERIC_DB_FETCH_FAILED, + "inselect_wallet_status"); + return qs; + } + return qs; +} + + +MHD_RESULT +TEH_handler_kyc_check ( + struct MHD_Connection *connection, + uint64_t payment_target_uuid) +{ + struct KycCheckContext kcc = { + .payment_target_uuid = payment_target_uuid + }; + MHD_RESULT res; + enum GNUNET_GenericReturnValue ret; + struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get (); + + (void) GNUNET_TIME_round_abs (&now); + if (TEH_KYC_NONE == TEH_kyc_config.mode) + return TALER_MHD_reply_static ( + connection, + MHD_HTTP_NO_CONTENT, + NULL, + NULL, + 0); + ret = TEH_DB_run_transaction (connection, + "kyc check", + &res, + &kyc_check, + &kcc); + if (GNUNET_SYSERR == ret) + return res; + if (! kcc.kyc.ok) + { + GNUNET_assert (TEH_KYC_OAUTH2 == TEH_kyc_config.mode); + return TALER_MHD_REPLY_JSON_PACK ( + connection, + MHD_HTTP_ACCEPTED, + GNUNET_JSON_pack_string ("kyc_url", + TEH_kyc_config.details.oauth2.url)); + } + { + struct TALER_ExchangePublicKeyP pub; + struct TALER_ExchangeSignatureP sig; + struct TALER_ExchangeAccountSetupSuccessPS as = { + .purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_ACCOUNT_SETUP_SUCCESS), + .purpose.size = htonl (sizeof (as)), + .h_payto = kcc.h_payto, + .timestamp = GNUNET_TIME_absolute_hton (now) + }; + enum TALER_ErrorCode ec; + + if (TALER_EC_NONE != + (ec = TEH_keys_exchange_sign (&as, + &pub, + &sig))) + { + return TALER_MHD_reply_with_ec (connection, + ec, + NULL); + } + return TALER_MHD_REPLY_JSON_PACK ( + connection, + MHD_HTTP_OK, + GNUNET_JSON_pack_data_auto ("exchange_sig", + &sig), + GNUNET_JSON_pack_data_auto ("exchange_pub", + &pub), + GNUNET_JSON_pack_time_abs ("now", + now)); + } +} + + +/* end of taler-exchange-httpd_kyc-check.c */ |