merchant

Merchant backend to process payments, run by merchants
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util.c (2246B)

      1 /*
      2   This file is part of TALER
      3   (C) 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 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 src/util/util.c
     18  * @brief small helpers
     19  * @author Christian Grothoff
     20  */
     21 #include "platform.h"
     22 #include <string.h>
     23 #include "taler/taler_merchant_util.h"
     24 #include <taler/taler_json_lib.h>
     25 #include <gnunet/gnunet_json_lib.h>
     26 
     27 
     28 bool
     29 TALER_MERCHANT_taxes_array_valid (const json_t *taxes)
     30 {
     31   json_t *tax;
     32   size_t idx;
     33 
     34   if (! json_is_array (taxes))
     35     return false;
     36   json_array_foreach (taxes, idx, tax)
     37   {
     38     struct TALER_Amount amount;
     39     const char *name;
     40     struct GNUNET_JSON_Specification spec[] = {
     41       GNUNET_JSON_spec_string ("name",
     42                                &name),
     43       TALER_JSON_spec_amount_any ("tax",
     44                                   &amount),
     45       GNUNET_JSON_spec_end ()
     46     };
     47     enum GNUNET_GenericReturnValue res;
     48     const char *ename;
     49     unsigned int eline;
     50 
     51     res = GNUNET_JSON_parse (tax,
     52                              spec,
     53                              &ename,
     54                              &eline);
     55     if (GNUNET_OK != res)
     56     {
     57       GNUNET_break_op (0);
     58       return false;
     59     }
     60   }
     61   return true;
     62 }
     63 
     64 
     65 enum TALER_MERCHANT_ContractTokenKind
     66 TALER_MERCHANT_contract_token_kind_from_string (const char *str)
     67 {
     68   if (NULL == str)
     69   {
     70     GNUNET_break (0);
     71     return TALER_MERCHANT_CONTRACT_TOKEN_KIND_INVALID;
     72   }
     73   if (0 == strcmp ("subscription",
     74                    str))
     75     return TALER_MERCHANT_CONTRACT_TOKEN_KIND_SUBSCRIPTION;
     76   if (0 == strcmp ("discount",
     77                    str))
     78     return TALER_MERCHANT_CONTRACT_TOKEN_KIND_DISCOUNT;
     79   return TALER_MERCHANT_CONTRACT_TOKEN_KIND_INVALID;
     80 }