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-rw-r--r--src/exchangedb/pg_select_refreshes_above_serial_id.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/src/exchangedb/pg_select_refreshes_above_serial_id.c b/src/exchangedb/pg_select_refreshes_above_serial_id.c
new file mode 100644
index 000000000..db432269c
--- /dev/null
+++ b/src/exchangedb/pg_select_refreshes_above_serial_id.c
@@ -0,0 +1,179 @@
+/*
+ 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_refreshes_above_serial_id.c
+ * @brief Implementation of the select_refreshes_above_serial_id 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_refreshes_above_serial_id.h"
+#include "pg_helper.h"
+
+
+/**
+ * Closure for #refreshs_serial_helper_cb().
+ */
+struct RefreshsSerialContext
+{
+
+ /**
+ * Callback to call.
+ */
+ TALER_EXCHANGEDB_RefreshesCallback cb;
+
+ /**
+ * Closure for @e cb.
+ */
+ void *cb_cls;
+
+ /**
+ * Plugin context.
+ */
+ struct PostgresClosure *pg;
+
+ /**
+ * Status code, set to #GNUNET_SYSERR on hard errors.
+ */
+ enum GNUNET_GenericReturnValue status;
+};
+
+
+/**
+ * Helper function to be called with the results of a SELECT statement
+ * that has returned @a num_results results.
+ *
+ * @param cls closure of type `struct RefreshsSerialContext`
+ * @param result the postgres result
+ * @param num_results the number of results in @a result
+ */
+static void
+refreshs_serial_helper_cb (void *cls,
+ PGresult *result,
+ unsigned int num_results)
+{
+ struct RefreshsSerialContext *rsc = cls;
+ struct PostgresClosure *pg = rsc->pg;
+
+ for (unsigned int i = 0; i<num_results; i++)
+ {
+ struct TALER_DenominationPublicKey denom_pub;
+ struct TALER_CoinSpendPublicKeyP coin_pub;
+ struct TALER_CoinSpendSignatureP coin_sig;
+ struct TALER_AgeCommitmentHash h_age_commitment;
+ bool ac_isnull;
+ struct TALER_Amount amount_with_fee;
+ uint32_t noreveal_index;
+ uint64_t rowid;
+ struct TALER_RefreshCommitmentP rc;
+ struct GNUNET_PQ_ResultSpec rs[] = {
+ TALER_PQ_result_spec_denom_pub ("denom_pub",
+ &denom_pub),
+ GNUNET_PQ_result_spec_allow_null (
+ GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
+ &h_age_commitment),
+ &ac_isnull),
+ GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
+ &coin_pub),
+ GNUNET_PQ_result_spec_auto_from_type ("old_coin_sig",
+ &coin_sig),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
+ &amount_with_fee),
+ GNUNET_PQ_result_spec_uint32 ("noreveal_index",
+ &noreveal_index),
+ GNUNET_PQ_result_spec_uint64 ("melt_serial_id",
+ &rowid),
+ GNUNET_PQ_result_spec_auto_from_type ("rc",
+ &rc),
+ GNUNET_PQ_result_spec_end
+ };
+ enum GNUNET_GenericReturnValue ret;
+
+ if (GNUNET_OK !=
+ GNUNET_PQ_extract_result (result,
+ rs,
+ i))
+ {
+ GNUNET_break (0);
+ rsc->status = GNUNET_SYSERR;
+ return;
+ }
+
+ ret = rsc->cb (rsc->cb_cls,
+ rowid,
+ &denom_pub,
+ ac_isnull ? NULL : &h_age_commitment,
+ &coin_pub,
+ &coin_sig,
+ &amount_with_fee,
+ noreveal_index,
+ &rc);
+ GNUNET_PQ_cleanup_result (rs);
+ if (GNUNET_OK != ret)
+ break;
+ }
+}
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_select_refreshes_above_serial_id (
+ void *cls,
+ uint64_t serial_id,
+ TALER_EXCHANGEDB_RefreshesCallback cb,
+ void *cb_cls)
+{
+ struct PostgresClosure *pg = cls;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_uint64 (&serial_id),
+ GNUNET_PQ_query_param_end
+ };
+ struct RefreshsSerialContext rsc = {
+ .cb = cb,
+ .cb_cls = cb_cls,
+ .pg = pg,
+ .status = GNUNET_OK
+ };
+ enum GNUNET_DB_QueryStatus qs;
+
+ PREPARE (pg,
+ "audit_get_refresh_commitments_incr",
+ "SELECT"
+ " denom.denom_pub"
+ ",kc.coin_pub AS old_coin_pub"
+ ",kc.age_commitment_hash"
+ ",old_coin_sig"
+ ",amount_with_fee"
+ ",noreveal_index"
+ ",melt_serial_id"
+ ",rc"
+ " FROM refresh_commitments"
+ " JOIN known_coins kc"
+ " ON (refresh_commitments.old_coin_pub = kc.coin_pub)"
+ " JOIN denominations denom"
+ " ON (kc.denominations_serial = denom.denominations_serial)"
+ " WHERE melt_serial_id>=$1"
+ " ORDER BY melt_serial_id ASC;");
+ qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+ "audit_get_refresh_commitments_incr",
+ params,
+ &refreshs_serial_helper_cb,
+ &rsc);
+ if (GNUNET_OK != rsc.status)
+ return GNUNET_DB_STATUS_HARD_ERROR;
+ return qs;
+}