diff options
Diffstat (limited to 'src/backenddb/pg_select_accounts.c')
-rw-r--r-- | src/backenddb/pg_select_accounts.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/backenddb/pg_select_accounts.c b/src/backenddb/pg_select_accounts.c new file mode 100644 index 00000000..ffb6c4c9 --- /dev/null +++ b/src/backenddb/pg_select_accounts.c @@ -0,0 +1,159 @@ +/* + 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 backenddb/pg_select_accounts.c + * @brief Implementation of the select_accounts function for Postgres + * @author Christian Grothoff + */ +#include "platform.h" +#include <taler/taler_error_codes.h> +#include <taler/taler_dbevents.h> +#include <taler/taler_pq_lib.h> +#include "pg_select_accounts.h" +#include "pg_helper.h" + + +/** + * Context for select_accounts(). + */ +struct SelectAccountsContext +{ + /** + * Function to call with the results. + */ + TALER_MERCHANTDB_AccountCallback cb; + + /** + * Closure for @e cb. + */ + void *cb_cls; + + /** + * Database context. + */ + struct PostgresClosure *pg; + + /** + * Set to the return value on errors. + */ + enum GNUNET_DB_QueryStatus qs; + +}; + + +/** + * Function to be called with the results of a SELECT statement + * that has returned @a num_results results about accounts. + * + * @param cls of type `struct SelectAccountsContext *` + * @param result the postgres result + * @param num_results the number of results in @a result + */ +static void +select_account_cb (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct SelectAccountsContext *lic = cls; + + for (unsigned int i = 0; i < num_results; i++) + { + char *payto; + char *facade_url = NULL; + json_t *credential = NULL; + struct TALER_MERCHANTDB_AccountDetails acc; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_auto_from_type ("h_wire", + &acc.h_wire), + GNUNET_PQ_result_spec_auto_from_type ("salt", + &acc.salt), + GNUNET_PQ_result_spec_string ("payto_uri", + &payto), + GNUNET_PQ_result_spec_allow_null ( + GNUNET_PQ_result_spec_string ("credit_facade_url", + &facade_url), + NULL), + GNUNET_PQ_result_spec_allow_null ( + TALER_PQ_result_spec_json ("credit_facade_credentials", + &credential), + NULL), + GNUNET_PQ_result_spec_bool ("active", + &acc.active), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + lic->qs = GNUNET_DB_STATUS_HARD_ERROR; + return; + } + acc.payto_uri = payto; + acc.credit_facade_url = facade_url; + acc.credit_facade_credentials = credential; + lic->cb (lic->cb_cls, + &acc); + GNUNET_PQ_cleanup_result (rs); + } +} + + +enum GNUNET_DB_QueryStatus +TMH_PG_select_accounts (void *cls, + const char *id, + TALER_MERCHANTDB_AccountCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct SelectAccountsContext lic = { + .cb = cb, + .cb_cls = cb_cls, + .pg = pg + }; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_string (id), + GNUNET_PQ_query_param_end + }; + enum GNUNET_DB_QueryStatus qs; + + check_connection (pg); + PREPARE (pg, + "select_accounts", + "SELECT" + " h_wire" + ",salt" + ",payto_uri" + ",credit_facade_url" + ",credit_facade_credentials" + ",active" + " FROM merchant_accounts" + " WHERE active" + " AND merchant_serial=" + " (SELECT merchant_serial " + " FROM merchant_instances" + " WHERE merchant_id=$1);"); + qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "select_accounts", + params, + &select_account_cb, + &lic); + if (0 > lic.qs) + return lic.qs; + return qs; +} |