121 lines
4.9 KiB
C
121 lines
4.9 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2022 Taler Systems SA
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file exchangedb/pg_do_reserve_purse.c
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* @brief Implementation of the do_reserve_purse function for Postgres
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include "taler_error_codes.h"
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#include "taler_dbevents.h"
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#include "taler_pq_lib.h"
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#include "pg_do_reserve_purse.h"
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#include "pg_helper.h"
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/**
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* Function called insert request to merge a purse into a reserve by the
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* respective purse merge key. The purse must not have been merged into a
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* different reserve.
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*
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* @param cls the @e cls of this struct with the plugin-specific state
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* @param purse_pub purse to merge
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* @param merge_sig signature affirming the merge
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* @param merge_timestamp time of the merge
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* @param reserve_sig signature of the reserve affirming the merge
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* @param purse_fee amount to charge the reserve for the purse creation, NULL to use the quota
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* @param reserve_pub public key of the reserve to credit
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* @param[out] in_conflict set to true if @a purse_pub was merged into a different reserve already
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* @param[out] no_reserve set to true if @a reserve_pub is not a known reserve
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* @param[out] insufficient_funds set to true if @a reserve_pub has insufficient capacity to create another purse
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* @return transaction status code
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*/
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enum GNUNET_DB_QueryStatus
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TEH_PG_do_reserve_purse (
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void *cls,
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const struct TALER_PurseContractPublicKeyP *purse_pub,
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const struct TALER_PurseMergeSignatureP *merge_sig,
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const struct GNUNET_TIME_Timestamp merge_timestamp,
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const struct TALER_ReserveSignatureP *reserve_sig,
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const struct TALER_Amount *purse_fee,
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const struct TALER_ReservePublicKeyP *reserve_pub,
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bool *in_conflict,
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bool *no_reserve,
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bool *insufficient_funds)
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{
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struct PostgresClosure *pg = cls;
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struct TALER_Amount zero_fee;
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struct TALER_PaytoHashP h_payto;
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struct GNUNET_TIME_Timestamp reserve_expiration
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= GNUNET_TIME_absolute_to_timestamp (
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GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
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pg->idle_reserve_expiration_time));
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struct GNUNET_TIME_Timestamp reserve_gc
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= GNUNET_TIME_absolute_to_timestamp (
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GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
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pg->legal_reserve_expiration_time));
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struct GNUNET_PQ_QueryParam params[] = {
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GNUNET_PQ_query_param_auto_from_type (purse_pub),
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GNUNET_PQ_query_param_auto_from_type (merge_sig),
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GNUNET_PQ_query_param_timestamp (&merge_timestamp),
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GNUNET_PQ_query_param_timestamp (&reserve_expiration),
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GNUNET_PQ_query_param_timestamp (&reserve_gc),
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GNUNET_PQ_query_param_auto_from_type (reserve_sig),
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GNUNET_PQ_query_param_bool (NULL == purse_fee),
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TALER_PQ_query_param_amount (NULL == purse_fee
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? &zero_fee
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: purse_fee),
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GNUNET_PQ_query_param_auto_from_type (reserve_pub),
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GNUNET_PQ_query_param_auto_from_type (&h_payto),
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GNUNET_PQ_query_param_end
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};
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struct GNUNET_PQ_ResultSpec rs[] = {
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GNUNET_PQ_result_spec_bool ("insufficient_funds",
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insufficient_funds),
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GNUNET_PQ_result_spec_bool ("conflict",
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in_conflict),
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GNUNET_PQ_result_spec_bool ("no_reserve",
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no_reserve),
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GNUNET_PQ_result_spec_end
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};
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{
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char *payto_uri;
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payto_uri = TALER_reserve_make_payto (pg->exchange_url,
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reserve_pub);
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TALER_payto_hash (payto_uri,
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&h_payto);
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GNUNET_free (payto_uri);
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}
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GNUNET_assert (GNUNET_OK ==
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TALER_amount_set_zero (pg->currency,
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&zero_fee));
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/* Used in #postgres_do_reserve_purse() */
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PREPARE (pg,
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"call_reserve_purse",
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"SELECT"
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" out_no_funds AS insufficient_funds"
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",out_no_reserve AS no_reserve"
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",out_conflict AS conflict"
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" FROM exchange_do_reserve_purse"
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" ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11);");
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return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
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"call_reserve_purse",
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params,
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rs);
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}
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