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-rw-r--r--src/exchangedb/pg_lookup_wire_transfer.c187
1 files changed, 187 insertions, 0 deletions
diff --git a/src/exchangedb/pg_lookup_wire_transfer.c b/src/exchangedb/pg_lookup_wire_transfer.c
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+++ b/src/exchangedb/pg_lookup_wire_transfer.c
@@ -0,0 +1,187 @@
+/*
+ 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_lookup_wire_tranfer.c
+ * @brief Implementation of the lookup_wire_tranfer 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_lookup_wire_transfer.h"
+#include "pg_helper.h"
+
+/**
+ * Closure for #handle_wt_result.
+ */
+struct WireTransferResultContext
+{
+ /**
+ * Function to call on each result.
+ */
+ TALER_EXCHANGEDB_AggregationDataCallback cb;
+
+ /**
+ * Closure for @e cb.
+ */
+ void *cb_cls;
+
+ /**
+ * Plugin context.
+ */
+ struct PostgresClosure *pg;
+
+ /**
+ * Set to #GNUNET_SYSERR on serious errors.
+ */
+ int status;
+};
+
+
+/**
+ * Function to be called with the results of a SELECT statement
+ * that has returned @a num_results results. Helper function
+ * for #postgres_lookup_wire_transfer().
+ *
+ * @param cls closure of type `struct WireTransferResultContext *`
+ * @param result the postgres result
+ * @param num_results the number of results in @a result
+ */
+static void
+handle_wt_result (void *cls,
+ PGresult *result,
+ unsigned int num_results)
+{
+ struct WireTransferResultContext *ctx = cls;
+ struct PostgresClosure *pg = ctx->pg;
+
+ for (unsigned int i = 0; i<num_results; i++)
+ {
+ uint64_t rowid;
+ struct TALER_PrivateContractHashP h_contract_terms;
+ struct TALER_CoinSpendPublicKeyP coin_pub;
+ struct TALER_PaytoHashP h_payto;
+ struct TALER_MerchantPublicKeyP merchant_pub;
+ struct GNUNET_TIME_Timestamp exec_time;
+ struct TALER_Amount amount_with_fee;
+ struct TALER_Amount deposit_fee;
+ struct TALER_DenominationPublicKey denom_pub;
+ char *payto_uri;
+ struct GNUNET_PQ_ResultSpec rs[] = {
+ GNUNET_PQ_result_spec_uint64 ("aggregation_serial_id", &rowid),
+ GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
+ &h_contract_terms),
+ GNUNET_PQ_result_spec_string ("payto_uri",
+ &payto_uri),
+ GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto",
+ &h_payto),
+ TALER_PQ_result_spec_denom_pub ("denom_pub",
+ &denom_pub),
+ GNUNET_PQ_result_spec_auto_from_type ("coin_pub",
+ &coin_pub),
+ GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
+ &merchant_pub),
+ GNUNET_PQ_result_spec_timestamp ("execution_date",
+ &exec_time),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
+ &amount_with_fee),
+ TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
+ &deposit_fee),
+ GNUNET_PQ_result_spec_end
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_PQ_extract_result (result,
+ rs,
+ i))
+ {
+ GNUNET_break (0);
+ ctx->status = GNUNET_SYSERR;
+ return;
+ }
+ ctx->cb (ctx->cb_cls,
+ rowid,
+ &merchant_pub,
+ payto_uri,
+ &h_payto,
+ exec_time,
+ &h_contract_terms,
+ &denom_pub,
+ &coin_pub,
+ &amount_with_fee,
+ &deposit_fee);
+ GNUNET_PQ_cleanup_result (rs);
+ }
+}
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_lookup_wire_transfer (
+ void *cls,
+ const struct TALER_WireTransferIdentifierRawP *wtid,
+ TALER_EXCHANGEDB_AggregationDataCallback cb,
+ void *cb_cls)
+{
+ struct PostgresClosure *pg = cls;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (wtid),
+ GNUNET_PQ_query_param_end
+ };
+ struct WireTransferResultContext ctx;
+ enum GNUNET_DB_QueryStatus qs;
+
+ ctx.cb = cb;
+ ctx.cb_cls = cb_cls;
+ ctx.pg = pg;
+ ctx.status = GNUNET_OK;
+ /* check if the melt record exists and get it */
+ /* Used in #postgres_lookup_wire_transfer */
+ PREPARE (pg,
+ "lookup_transactions",
+ "SELECT"
+ " aggregation_serial_id"
+ ",deposits.h_contract_terms"
+ ",payto_uri"
+ ",wire_targets.wire_target_h_payto"
+ ",kc.coin_pub"
+ ",deposits.merchant_pub"
+ ",wire_out.execution_date"
+ ",deposits.amount_with_fee_val"
+ ",deposits.amount_with_fee_frac"
+ ",denom.fee_deposit_val"
+ ",denom.fee_deposit_frac"
+ ",denom.denom_pub"
+ " FROM aggregation_tracking"
+ " JOIN deposits"
+ " USING (deposit_serial_id)"
+ " JOIN wire_targets"
+ " USING (wire_target_h_payto)"
+ " JOIN known_coins kc"
+ " USING (coin_pub)"
+ " JOIN denominations denom"
+ " USING (denominations_serial)"
+ " JOIN wire_out"
+ " USING (wtid_raw)"
+ " WHERE wtid_raw=$1;");
+ qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+ "lookup_transactions",
+ params,
+ &handle_wt_result,
+ &ctx);
+ if (GNUNET_OK != ctx.status)
+ return GNUNET_DB_STATUS_HARD_ERROR;
+ return qs;
+}