diff options
Diffstat (limited to 'src/exchangedb/pg_select_aml_history.c')
| -rw-r--r-- | src/exchangedb/pg_select_aml_history.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/exchangedb/pg_select_aml_history.c b/src/exchangedb/pg_select_aml_history.c new file mode 100644 index 000000000..0461e0d9b --- /dev/null +++ b/src/exchangedb/pg_select_aml_history.c @@ -0,0 +1,157 @@ +/* + 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 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 General Public License for more details. + + You should have received a copy of the GNU General Public License along with + TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ +/** + * @file exchangedb/pg_select_aml_history.c + * @brief Implementation of the select_aml_history function for Postgres + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_error_codes.h" +#include "taler_dbevents.h" +#include "taler_pq_lib.h" +#include "pg_select_aml_history.h" +#include "pg_helper.h" + + +/** + * Closure for #handle_aml_result. + */ +struct AmlHistoryResultContext +{ + /** + * Function to call on each result. + */ + TALER_EXCHANGEDB_AmlHistoryCallback cb; + + /** + * Closure for @e cb. + */ + void *cb_cls; + + /** + * Plugin context. + */ + struct PostgresClosure *pg; + + /** + * Set to #GNUNET_SYSERR on serious errors. + */ + enum GNUNET_GenericReturnValue status; +}; + + +/** + * Function to be called with the results of a SELECT statement + * that has returned @a num_results results. Helper function + * for #TEH_PG_select_aml_history(). + * + * @param cls closure of type `struct AmlHistoryResultContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +handle_aml_result (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct AmlHistoryResultContext *ctx = cls; + struct PostgresClosure *pg = ctx->pg; + + for (unsigned int i = 0; i<num_results; i++) + { + struct TALER_Amount new_threshold; + uint32_t ns; + struct GNUNET_TIME_Timestamp decision_time; + char *justification; + struct TALER_AmlOfficerPublicKeyP decider_pub; + struct TALER_AmlOfficerSignatureP decider_sig; + struct GNUNET_PQ_ResultSpec rs[] = { + TALER_PQ_RESULT_SPEC_AMOUNT ("new_threshold", + &new_threshold), + GNUNET_PQ_result_spec_uint32 ("new_status", + &ns), + GNUNET_PQ_result_spec_timestamp ("decision_time", + &decision_time), + GNUNET_PQ_result_spec_string ("justification", + &justification), + GNUNET_PQ_result_spec_auto_from_type ("decider_pub", + &decider_pub), + GNUNET_PQ_result_spec_auto_from_type ("decider_sig", + &decider_sig), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + ctx->status = GNUNET_SYSERR; + return; + } + ctx->cb (ctx->cb_cls, + &new_threshold, + (enum TALER_AmlDecisionState) ns, + decision_time, + justification, + &decider_pub, + &decider_sig); + GNUNET_PQ_cleanup_result (rs); + } +} + + +enum GNUNET_DB_QueryStatus +TEH_PG_select_aml_history ( + void *cls, + const struct TALER_PaytoHashP *h_payto, + TALER_EXCHANGEDB_AmlHistoryCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_auto_from_type (h_payto), + GNUNET_PQ_query_param_end + }; + struct AmlHistoryResultContext ctx = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg, + .status = GNUNET_OK + }; + enum GNUNET_DB_QueryStatus qs; + + PREPARE (pg, + "lookup_aml_history", + "SELECT" + " new_threshold" + ",new_status" + ",decision_time" + ",justification" + ",decider_pub" + ",decider_sig" + " FROM aml_history" + " WHERE h_payto=$1;"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "lookup_aml_history", + params, + &handle_aml_result, + &ctx); + if (GNUNET_OK != ctx.status) + return GNUNET_DB_STATUS_HARD_ERROR; + return qs; +} |