diff options
Diffstat (limited to 'src/exchangedb/pg_iterate_active_signkeys.c')
-rw-r--r-- | src/exchangedb/pg_iterate_active_signkeys.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/exchangedb/pg_iterate_active_signkeys.c b/src/exchangedb/pg_iterate_active_signkeys.c new file mode 100644 index 000000000..b6dac230e --- /dev/null +++ b/src/exchangedb/pg_iterate_active_signkeys.c @@ -0,0 +1,145 @@ +/* + 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_active_signkeys.c + * @brief Implementation of the iterate_active_signkeys 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_active_signkeys.h" +#include "pg_helper.h" + + + +/** + * Closure for #signkeys_cb_helper() + */ +struct SignkeysIteratorContext +{ + /** + * Function to call with the results. + */ + TALER_EXCHANGEDB_ActiveSignkeysCallback cb; + + /** + * Closure to pass to @e cb + */ + void *cb_cls; + +}; + + +/** + * Helper function for #postgres_iterate_active_signkeys(). + * Calls the callback with each signkey. + * + * @param cls a `struct SignkeysIteratorContext` + * @param result db results + * @param num_results number of results in @a result + */ +static void +signkeys_cb_helper (void *cls, + PGresult *result, + unsigned int num_results) +{ + struct SignkeysIteratorContext *dic = cls; + + for (unsigned int i = 0; i<num_results; i++) + { + struct TALER_EXCHANGEDB_SignkeyMetaData meta; + struct TALER_ExchangePublicKeyP exchange_pub; + struct TALER_MasterSignatureP master_sig; + struct GNUNET_PQ_ResultSpec rs[] = { + GNUNET_PQ_result_spec_auto_from_type ("master_sig", + &master_sig), + GNUNET_PQ_result_spec_auto_from_type ("exchange_pub", + &exchange_pub), + GNUNET_PQ_result_spec_timestamp ("valid_from", + &meta.start), + GNUNET_PQ_result_spec_timestamp ("expire_sign", + &meta.expire_sign), + GNUNET_PQ_result_spec_timestamp ("expire_legal", + &meta.expire_legal), + GNUNET_PQ_result_spec_end + }; + + if (GNUNET_OK != + GNUNET_PQ_extract_result (result, + rs, + i)) + { + GNUNET_break (0); + return; + } + dic->cb (dic->cb_cls, + &exchange_pub, + &meta, + &master_sig); + } +} + + +/** + * Function called to invoke @a cb on every non-revoked exchange signing key + * that has been signed by the master key. Revoked and (for signing!) + * expired keys are skipped. Runs in its own read-only transaction. + * + * @param cls the @e cls of this struct with the plugin-specific state + * @param cb function to call on each signing key + * @param cb_cls closure for @a cb + * @return transaction status code + */ +enum GNUNET_DB_QueryStatus +TEH_PG_iterate_active_signkeys (void *cls, + TALER_EXCHANGEDB_ActiveSignkeysCallback cb, + void *cb_cls) +{ + struct PostgresClosure *pg = cls; + struct GNUNET_TIME_Absolute now = {0}; + struct GNUNET_PQ_QueryParam params[] = { + GNUNET_PQ_query_param_absolute_time (&now), + GNUNET_PQ_query_param_end + }; + struct SignkeysIteratorContext dic = { + .cb = cb, + .cb_cls = cb_cls, + }; + + PREPARE (pg, + "select_signkeys", + "SELECT" + " master_sig" + ",exchange_pub" + ",valid_from" + ",expire_sign" + ",expire_legal" + " FROM exchange_sign_keys esk" + " WHERE" + " expire_sign > $1" + " AND NOT EXISTS " + " (SELECT esk_serial " + " FROM signkey_revocations skr" + " WHERE esk.esk_serial = skr.esk_serial);"); + now = GNUNET_TIME_absolute_get (); + return GNUNET_PQ_eval_prepared_multi_select (pg->conn, + "select_signkeys", + params, + &signkeys_cb_helper, + &dic); +} |