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-rw-r--r--src/exchangedb/pg_iterate_denomination_info.c180
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diff --git a/src/exchangedb/pg_iterate_denomination_info.c b/src/exchangedb/pg_iterate_denomination_info.c
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+++ b/src/exchangedb/pg_iterate_denomination_info.c
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+/*
+ 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_iterate_denomination_info.c
+ * @brief Implementation of the iterate_denomination_info 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_iterate_denomination_info.h"
+#include "pg_helper.h"
+
+
+/**
+ * Closure for #domination_cb_helper()
+ */
+struct DenomIteratorContext
+{
+ /**
+ * Function to call with the results.
+ */
+ TALER_EXCHANGEDB_DenominationCallback cb;
+
+ /**
+ * Closure to pass to @e cb
+ */
+ void *cb_cls;
+
+ /**
+ * Plugin context.
+ */
+ struct PostgresClosure *pg;
+};
+
+
+/**
+ * Helper function for #TEH_PG_iterate_denomination_info().
+ * Calls the callback with each denomination key.
+ *
+ * @param cls a `struct DenomIteratorContext`
+ * @param result db results
+ * @param num_results number of results in @a result
+ */
+static void
+domination_cb_helper (void *cls,
+ PGresult *result,
+ unsigned int num_results)
+{
+ struct DenomIteratorContext *dic = cls;
+ struct PostgresClosure *pg = dic->pg;
+
+ for (unsigned int i = 0; i<num_results; i++)
+ {
+ struct TALER_EXCHANGEDB_DenominationKeyInformation issue;
+ struct TALER_DenominationPublicKey denom_pub;
+ struct TALER_DenominationHashP denom_hash;
+ struct GNUNET_PQ_ResultSpec rs[] = {
+ GNUNET_PQ_result_spec_auto_from_type ("master_sig",
+ &issue.signature),
+ GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
+ &denom_hash),
+ GNUNET_PQ_result_spec_timestamp ("valid_from",
+ &issue.start),
+ GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
+ &issue.expire_withdraw),
+ GNUNET_PQ_result_spec_timestamp ("expire_deposit",
+ &issue.expire_deposit),
+ GNUNET_PQ_result_spec_timestamp ("expire_legal",
+ &issue.expire_legal),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
+ &issue.value),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
+ &issue.fees.withdraw),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
+ &issue.fees.deposit),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
+ &issue.fees.refresh),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
+ &issue.fees.refund),
+ TALER_PQ_result_spec_denom_pub ("denom_pub",
+ &denom_pub),
+ GNUNET_PQ_result_spec_uint32 ("age_mask",
+ &issue.age_mask.bits),
+ GNUNET_PQ_result_spec_end
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_PQ_extract_result (result,
+ rs,
+ i))
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ /* Unfortunately we have to carry the age mask in both, the
+ * TALER_DenominationPublicKey and
+ * TALER_EXCHANGEDB_DenominationKeyInformation at different times.
+ * Here we use _both_ so let's make sure the values are the same. */
+ denom_pub.age_mask = issue.age_mask;
+ TALER_denom_pub_hash (&denom_pub,
+ &issue.denom_hash);
+ if (0 !=
+ GNUNET_memcmp (&issue.denom_hash,
+ &denom_hash))
+ {
+ GNUNET_break (0);
+ }
+ else
+ {
+ dic->cb (dic->cb_cls,
+ &denom_pub,
+ &issue);
+ }
+ TALER_denom_pub_free (&denom_pub);
+ }
+}
+
+
+/**
+ * Fetch information about all known denomination keys.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param cb function to call on each denomination key
+ * @param cb_cls closure for @a cb
+ * @return transaction status code
+ */
+enum GNUNET_DB_QueryStatus
+TEH_PG_iterate_denomination_info (void *cls,
+ TALER_EXCHANGEDB_DenominationCallback cb,
+ void *cb_cls)
+{
+ struct PostgresClosure *pg = cls;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_end
+ };
+ struct DenomIteratorContext dic = {
+ .cb = cb,
+ .cb_cls = cb_cls,
+ .pg = pg
+ };
+
+ PREPARE (pg,
+ "denomination_iterate",
+ "SELECT"
+ " master_sig"
+ ",denom_pub_hash"
+ ",valid_from"
+ ",expire_withdraw"
+ ",expire_deposit"
+ ",expire_legal"
+ ",coin" /* value of this denom */
+ ",fee_withdraw"
+ ",fee_deposit"
+ ",fee_refresh"
+ ",fee_refund"
+ ",denom_pub"
+ ",age_mask"
+ " FROM denominations;");
+ return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+ "denomination_iterate",
+ params,
+ &domination_cb_helper,
+ &dic);
+}