merchant

Merchant backend to process payments, run by merchants
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pg_lookup_mfa_challenge.c (3904B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2025 Taler Systems SA
      4 
      5    TALER is free software; you can redistribute it and/or modify it under the
      6    terms of the GNU General Public License as published by the Free Software
      7    Foundation; either version 3, or (at your option) any later version.
      8 
      9    TALER 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 General Public License for more details.
     12 
     13    You should have received a copy of the GNU General Public License along with
     14    TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15  */
     16 /**
     17  * @file backenddb/pg_lookup_mfa_challenge.c
     18  * @brief Implementation of the lookup_mfa_challenge function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "platform.h"
     22 #include <taler/taler_error_codes.h>
     23 #include <taler/taler_dbevents.h>
     24 #include <taler/taler_pq_lib.h>
     25 #include "pg_lookup_mfa_challenge.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TMH_PG_lookup_mfa_challenge (
     31   void *cls,
     32   uint64_t challenge_id,
     33   const struct TALER_MERCHANT_MFA_BodyHash *h_body,
     34   struct TALER_MERCHANT_MFA_BodySalt *salt,
     35   char **required_address,
     36   enum TALER_MERCHANT_MFA_CriticalOperation *op,
     37   struct GNUNET_TIME_Absolute *confirmation_date,
     38   struct GNUNET_TIME_Absolute *retransmission_date,
     39   uint32_t *retry_counter,
     40   enum TALER_MERCHANT_MFA_Channel *tan_channel)
     41 {
     42   struct PostgresClosure *pg = cls;
     43   struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
     44   struct GNUNET_PQ_QueryParam params[] = {
     45     GNUNET_PQ_query_param_uint64 (&challenge_id),
     46     GNUNET_PQ_query_param_auto_from_type (h_body),
     47     GNUNET_PQ_query_param_absolute_time (&now),
     48     GNUNET_PQ_query_param_end
     49   };
     50   char *op_str;
     51   char *chan_str;
     52   bool no_conf;
     53   struct GNUNET_PQ_ResultSpec rs[] = {
     54     GNUNET_PQ_result_spec_string ("op",
     55                                   &op_str),
     56     GNUNET_PQ_result_spec_auto_from_type ("salt",
     57                                           salt),
     58     GNUNET_PQ_result_spec_allow_null (
     59       GNUNET_PQ_result_spec_absolute_time ("confirmation_date",
     60                                            confirmation_date),
     61       &no_conf),
     62     GNUNET_PQ_result_spec_absolute_time ("retransmission_date",
     63                                          retransmission_date),
     64     GNUNET_PQ_result_spec_uint32 ("retry_counter",
     65                                   retry_counter),
     66     GNUNET_PQ_result_spec_string ("tan_channel",
     67                                   &chan_str),
     68     GNUNET_PQ_result_spec_string ("required_address",
     69                                   required_address),
     70     GNUNET_PQ_result_spec_end
     71   };
     72   enum GNUNET_DB_QueryStatus qs;
     73 
     74   PREPARE (pg,
     75            "lookup_mfa_challenge",
     76            "SELECT "
     77            "  op::TEXT"
     78            " ,salt"
     79            " ,confirmation_date"
     80            " ,retransmission_date"
     81            " ,retry_counter"
     82            " ,required_address"
     83            " ,tan_channel::TEXT"
     84            "  FROM tan_challenges"
     85            " WHERE (challenge_id = $1)"
     86            "   AND (h_body = $2)"
     87            "   AND (expiration_date > $3)");
     88   /* Initialize to conservative values in case qs ends up <= 0 */
     89   *tan_channel = TALER_MERCHANT_MFA_CHANNEL_NONE;
     90   *op = TALER_MERCHANT_MFA_CO_NONE;
     91   *retry_counter = 0;
     92   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     93                                                  "lookup_mfa_challenge",
     94                                                  params,
     95                                                  rs);
     96   if (qs <= 0)
     97     return qs;
     98   if (no_conf)
     99     *confirmation_date = GNUNET_TIME_UNIT_FOREVER_ABS;
    100   *tan_channel = TALER_MERCHANT_MFA_channel_from_string (chan_str);
    101   *op = TALER_MERCHANT_MFA_co_from_string (op_str);
    102   GNUNET_free (chan_str);
    103   GNUNET_free (op_str);
    104   return qs;
    105 }