diff options
Diffstat (limited to 'src/exchange/taler-exchange-httpd_management_drain.c')
| -rw-r--r-- | src/exchange/taler-exchange-httpd_management_drain.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/src/exchange/taler-exchange-httpd_management_drain.c b/src/exchange/taler-exchange-httpd_management_drain.c new file mode 100644 index 000000000..1e490d799 --- /dev/null +++ b/src/exchange/taler-exchange-httpd_management_drain.c @@ -0,0 +1,195 @@ +/* + This file is part of TALER + Copyright (C) 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_management_drain.c + * @brief Handle request to drain profits + * @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_management.h" +#include "taler-exchange-httpd_responses.h" + + +/** + * Closure for the #drain transaction. + */ +struct DrainContext +{ + /** + * Fee's signature affirming the #TALER_SIGNATURE_MASTER_DRAIN_PROFITS operation. + */ + struct TALER_MasterSignatureP master_sig; + + /** + * Wire transfer identifier to use. + */ + struct TALER_WireTransferIdentifierRawP wtid; + + /** + * Account to credit. + */ + const char *payto_uri; + + /** + * Configuration section with account to debit. + */ + const char *account_section; + + /** + * Signature time. + */ + struct GNUNET_TIME_Timestamp date; + + /** + * Amount to transfer. + */ + struct TALER_Amount amount; + +}; + + +/** + * Function implementing database transaction to drain profits. 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 DrainContext` + * @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 +drain (void *cls, + struct MHD_Connection *connection, + MHD_RESULT *mhd_ret) +{ + struct DrainContext *dc = cls; + enum GNUNET_DB_QueryStatus qs; + + qs = TEH_plugin->insert_drain_profit ( + TEH_plugin->cls, + &dc->wtid, + dc->account_section, + dc->payto_uri, + dc->date, + &dc->amount, + &dc->master_sig); + 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_STORE_FAILED, + "insert drain profit"); + return qs; + } + return qs; +} + + +MHD_RESULT +TEH_handler_management_post_drain ( + struct MHD_Connection *connection, + const json_t *root) +{ + struct DrainContext dc; + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_string ("debit_account_section", + &dc.account_section), + TALER_JSON_spec_payto_uri ("credit_payto_uri", + &dc.payto_uri), + GNUNET_JSON_spec_fixed_auto ("wtid", + &dc.wtid), + GNUNET_JSON_spec_fixed_auto ("master_sig", + &dc.master_sig), + GNUNET_JSON_spec_timestamp ("date", + &dc.date), + TALER_JSON_spec_amount ("amount", + TEH_currency, + &dc.amount), + GNUNET_JSON_spec_end () + }; + + { + enum GNUNET_GenericReturnValue res; + + res = TALER_MHD_parse_json_data (connection, + root, + spec); + if (GNUNET_SYSERR == res) + return MHD_NO; /* hard failure */ + if (GNUNET_NO == res) + return MHD_YES; /* failure */ + } + + TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++; + if (GNUNET_OK != + TALER_exchange_offline_profit_drain_verify ( + &dc.wtid, + dc.date, + &dc.amount, + dc.account_section, + dc.payto_uri, + &TEH_master_public_key, + &dc.master_sig)) + { + /* signature invalid */ + GNUNET_break_op (0); + return TALER_MHD_reply_with_error ( + connection, + MHD_HTTP_FORBIDDEN, + TALER_EC_EXCHANGE_MANAGEMENT_DRAIN_PROFITS_SIGNATURE_INVALID, + NULL); + } + + { + enum GNUNET_GenericReturnValue res; + MHD_RESULT ret; + + res = TEH_DB_run_transaction (connection, + "insert drain profit", + TEH_MT_REQUEST_OTHER, + &ret, + &drain, + &dc); + if (GNUNET_SYSERR == res) + return ret; + } + return TALER_MHD_reply_static ( + connection, + MHD_HTTP_NO_CONTENT, + NULL, + NULL, + 0); +} + + +/* end of taler-exchange-httpd_management_drain.c */ |