merchant

Merchant backend to process payments, run by merchants
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merchant_api_common_mfa_challenge.c (3110B)

      1 /*
      2   This file is part of TALER
      3   Copyright (C) 2025-2026 Taler Systems SA
      4 
      5   TALER is free software; you can redistribute it and/or modify it under the
      6   terms of the GNU Lesser General Public License as published by the Free Software
      7   Foundation; either version 2.1, 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 Lesser General Public License for more details.
     12 
     13   You should have received a copy of the GNU Lesser General Public License along with
     14   TALER; see the file COPYING.LGPL.  If not, see
     15   <http://www.gnu.org/licenses/>
     16 */
     17 /**
     18  * @file src/lib/merchant_api_common_mfa_challenge.c
     19  * @brief Shared parsing of HTTP 202 MFA challenge responses
     20  * @author Christian Grothoff
     21  */
     22 #include "platform.h"
     23 #include "taler/taler_merchant_service.h"
     24 #include <gnunet/gnunet_json_lib.h>
     25 #include "taler/taler_json_lib.h"
     26 #include "merchant_api_common.h"
     27 
     28 
     29 enum GNUNET_GenericReturnValue
     30 TALER_MERCHANT_parse_mfa_challenge_response_ (
     31   const json_t *json,
     32   struct TALER_MERCHANT_MfaChallengeResponse *cr)
     33 {
     34   const json_t *challenges;
     35   struct GNUNET_JSON_Specification spec[] = {
     36     GNUNET_JSON_spec_bool ("combi_and",
     37                            &cr->combi_and),
     38     GNUNET_JSON_spec_array_const ("challenges",
     39                                   &challenges),
     40     GNUNET_JSON_spec_end ()
     41   };
     42 
     43   memset (cr,
     44           0,
     45           sizeof (*cr));
     46   if (GNUNET_OK !=
     47       GNUNET_JSON_parse (json,
     48                          spec,
     49                          NULL, NULL))
     50   {
     51     GNUNET_break_op (0);
     52     return GNUNET_SYSERR;
     53   }
     54   cr->challenges_length = (unsigned int) json_array_size (challenges);
     55   if (0 == cr->challenges_length)
     56   {
     57     GNUNET_break_op (0);
     58     return GNUNET_SYSERR;
     59   }
     60   cr->challenges = GNUNET_new_array (
     61     cr->challenges_length,
     62     struct TALER_MERCHANT_MfaChallengeEntry);
     63   for (unsigned int i = 0; i < cr->challenges_length; i++)
     64   {
     65     const json_t *jentry = json_array_get (challenges,
     66                                            i);
     67     struct TALER_MERCHANT_MfaChallengeEntry *entry = &cr->challenges[i];
     68     struct GNUNET_JSON_Specification espec[] = {
     69       GNUNET_JSON_spec_string ("tan_info",
     70                                &entry->tan_info),
     71       GNUNET_JSON_spec_string ("tan_channel",
     72                                &entry->tan_channel),
     73       TALER_JSON_spec_slug ("challenge_id",
     74                             &entry->challenge_id),
     75       GNUNET_JSON_spec_end ()
     76     };
     77 
     78     if (GNUNET_OK !=
     79         GNUNET_JSON_parse (jentry,
     80                            espec,
     81                            NULL, NULL))
     82     {
     83       GNUNET_break_op (0);
     84       GNUNET_free (cr->challenges);
     85       cr->challenges_length = 0;
     86       return GNUNET_SYSERR;
     87     }
     88   }
     89   return GNUNET_OK;
     90 }
     91 
     92 
     93 void
     94 TALER_MERCHANT_mfa_challenge_response_free (
     95   struct TALER_MERCHANT_MfaChallengeResponse *cr)
     96 {
     97   GNUNET_free (cr->challenges);
     98   cr->challenges_length = 0;
     99 }
    100 
    101 
    102 /* end of merchant_api_common_mfa_challenge.c */