anastasis

Credential backup and recovery protocol and service
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anastasis-db_get_escrow_challenge.c (2723B)

      1 /*
      2   This file is part of Anastasis
      3   Copyright (C) 2020-2022 Anastasis SARL
      4 
      5   Anastasis is free software; you can redistribute it and/or modify it under the
      6   terms of the GNU Affero General Public License as published by the Free Software
      7   Foundation; either version 3, or (at your option) any later version.
      8 
      9   Anastasis is distributed in the hope that it will be useful, but WITHOUT ANY
     10   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11   A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
     12 
     13   You should have received a copy of the GNU Affero General Public License along with
     14   Anastasis; see the file COPYING.GPL.  If not, see <http://www.gnu.org/licenses/>
     15 */
     16 /**
     17  * @file stasis/anastasis-db_get_escrow_challenge.c
     18  * @brief Anastasis database: get escrow challenge
     19  * @author Christian Grothoff
     20  */
     21 #include "platform.h"
     22 #include "anastasis-db_pg.h"
     23 #include "anastasis/anastasis-database/get_escrow_challenge.h"
     24 #include "anastasis/anastasis-database/transaction.h"
     25 #include "anastasis/anastasis-database/preflight.h"
     26 #include <taler/taler_pq_lib.h>
     27 
     28 
     29 /**
     30  * Get the encrypted truth to validate the challenge response
     31  *
     32  * @param truth_uuid the identifier for the Truth
     33  * @param[out] truth contains the encrypted truth
     34  * @param[out] truth_size size of the encrypted truth
     35  * @param[out] truth_mime mime type of truth
     36  * @param[out] method type of the challenge
     37  * @return transaction status
     38  */
     39 enum GNUNET_DB_QueryStatus
     40 ANASTASIS_DB_get_escrow_challenge (
     41   const struct ANASTASIS_CRYPTO_TruthUUIDP *truth_uuid,
     42   void **truth,
     43   size_t *truth_size,
     44   char **truth_mime,
     45   char **method)
     46 {
     47   struct GNUNET_PQ_QueryParam params[] = {
     48     GNUNET_PQ_query_param_auto_from_type (truth_uuid),
     49     GNUNET_PQ_query_param_end
     50   };
     51   struct GNUNET_PQ_ResultSpec rs[] = {
     52     GNUNET_PQ_result_spec_variable_size ("encrypted_truth",
     53                                          truth,
     54                                          truth_size),
     55     GNUNET_PQ_result_spec_string ("truth_mime",
     56                                   truth_mime),
     57     GNUNET_PQ_result_spec_string ("method_name",
     58                                   method),
     59     GNUNET_PQ_result_spec_end
     60   };
     61 
     62   PREPARE ("truth_select",
     63            "SELECT "
     64            " method_name"
     65            ",encrypted_truth"
     66            ",truth_mime"
     67            " FROM anastasis_truth"
     68            " WHERE truth_uuid=$1;");
     69   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     70                                                    "truth_select",
     71                                                    params,
     72                                                    rs);
     73 }
     74 
     75 
     76 /* end of anastasis-db_get_escrow_challenge.c */