diff options
Diffstat (limited to 'src/exchangedb/pg_do_reserve_purse.c')
-rw-r--r-- | src/exchangedb/pg_do_reserve_purse.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/exchangedb/pg_do_reserve_purse.c b/src/exchangedb/pg_do_reserve_purse.c new file mode 100644 index 000000000..e03e23fec --- /dev/null +++ b/src/exchangedb/pg_do_reserve_purse.c @@ -0,0 +1,121 @@ +/* + 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_do_reserve_purse.c + * @brief Implementation of the do_reserve_purse 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_do_reserve_purse.h" +#include "pg_helper.h" +/** + * Function called insert request to merge a purse into a reserve by the + * respective purse merge key. The purse must not have been merged into a + * different reserve. + * + * @param cls the @e cls of this struct with the plugin-specific state + * @param purse_pub purse to merge + * @param merge_sig signature affirming the merge + * @param merge_timestamp time of the merge + * @param reserve_sig signature of the reserve affirming the merge + * @param purse_fee amount to charge the reserve for the purse creation, NULL to use the quota + * @param reserve_pub public key of the reserve to credit + * @param[out] in_conflict set to true if @a purse_pub was merged into a different reserve already + * @param[out] no_reserve set to true if @a reserve_pub is not a known reserve + * @param[out] insufficient_funds set to true if @a reserve_pub has insufficient capacity to create another purse + * @return transaction status code + */ +enum GNUNET_DB_QueryStatus +TEH_PG_do_reserve_purse ( + void *cls, + const struct TALER_PurseContractPublicKeyP *purse_pub, + const struct TALER_PurseMergeSignatureP *merge_sig, + const struct GNUNET_TIME_Timestamp merge_timestamp, + const struct TALER_ReserveSignatureP *reserve_sig, + const struct TALER_Amount *purse_fee, + const struct TALER_ReservePublicKeyP *reserve_pub, + bool *in_conflict, + bool *no_reserve, + bool *insufficient_funds) +{ + struct PostgresClosure *pg = cls; + struct TALER_Amount zero_fee; + struct TALER_PaytoHashP h_payto; + struct GNUNET_TIME_Timestamp reserve_expiration + = GNUNET_TIME_absolute_to_timestamp ( + GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), + pg->idle_reserve_expiration_time)); + struct GNUNET_TIME_Timestamp reserve_gc + = GNUNET_TIME_absolute_to_timestamp ( + GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), + pg->legal_reserve_expiration_time)); + + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_auto_from_type (purse_pub), + GNUNET_PQ_query_param_auto_from_type (merge_sig), + GNUNET_PQ_query_param_timestamp (&merge_timestamp), + GNUNET_PQ_query_param_timestamp (&reserve_expiration), + GNUNET_PQ_query_param_timestamp (&reserve_gc), + GNUNET_PQ_query_param_auto_from_type (reserve_sig), + GNUNET_PQ_query_param_bool (NULL == purse_fee), + TALER_PQ_query_param_amount (pg->conn, + NULL == purse_fee + ? &zero_fee + : purse_fee), + GNUNET_PQ_query_param_auto_from_type (reserve_pub), + GNUNET_PQ_query_param_auto_from_type (&h_payto), + GNUNET_PQ_query_param_end + }; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_bool ("insufficient_funds", + insufficient_funds), + GNUNET_PQ_result_spec_bool ("conflict", + in_conflict), + GNUNET_PQ_result_spec_bool ("no_reserve", + no_reserve), + GNUNET_PQ_result_spec_end + }; + + { + char *payto_uri; + + payto_uri = TALER_reserve_make_payto (pg->exchange_url, + reserve_pub); + TALER_payto_hash (payto_uri, + &h_payto); + GNUNET_free (payto_uri); + } + GNUNET_assert (GNUNET_OK == + TALER_amount_set_zero (pg->currency, + &zero_fee)); + /* Used in #postgres_do_reserve_purse() */ + PREPARE (pg, + "call_reserve_purse", + "SELECT" + " out_no_funds AS insufficient_funds" + ",out_no_reserve AS no_reserve" + ",out_conflict AS conflict" + " FROM exchange_do_reserve_purse" + " ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10);"); + + return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, + "call_reserve_purse", + params, + rs); +} |