Line data    Source code

       1              : /*
       2              :   This file is part of TALER
       3              :   Copyright (C) 2018, 2021, 2024 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 json/json_wire.c
      18              :  * @brief helper functions to generate or check /wire replies
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include <gnunet/gnunet_util_lib.h>
      22              : #include "taler/taler_util.h"
      23              : #include "taler/taler_json_lib.h"
      24              : 
      25              : 
      26              : enum GNUNET_GenericReturnValue
      27          108 : TALER_JSON_merchant_wire_signature_hash (const json_t *wire_s,
      28              :                                          struct TALER_MerchantWireHashP *hc)
      29              : {
      30              :   struct TALER_FullPayto payto_uri;
      31              :   struct TALER_WireSaltP salt;
      32              :   struct GNUNET_JSON_Specification spec[] = {
      33          108 :     TALER_JSON_spec_full_payto_uri ("payto_uri",
      34              :                                     &payto_uri),
      35          108 :     GNUNET_JSON_spec_fixed_auto ("salt",
      36              :                                  &salt),
      37          108 :     GNUNET_JSON_spec_end ()
      38              :   };
      39              : 
      40          108 :   if (GNUNET_OK !=
      41          108 :       GNUNET_JSON_parse (wire_s,
      42              :                          spec,
      43              :                          NULL, NULL))
      44              :   {
      45            0 :     GNUNET_break_op (0);
      46            0 :     return GNUNET_SYSERR;
      47              :   }
      48          108 :   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
      49              :               "Validating `%s'\n",
      50              :               payto_uri.full_payto);
      51              :   {
      52              :     char *err;
      53              : 
      54          108 :     err = TALER_payto_validate (payto_uri);
      55          108 :     if (NULL != err)
      56              :     {
      57            0 :       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
      58              :                   "URI `%s' ill-formed: %s\n",
      59              :                   payto_uri.full_payto,
      60              :                   err);
      61            0 :       GNUNET_free (err);
      62            0 :       return GNUNET_SYSERR;
      63              :     }
      64              :   }
      65          108 :   TALER_merchant_wire_signature_hash (payto_uri,
      66              :                                       &salt,
      67              :                                       hc);
      68          108 :   return GNUNET_OK;
      69              : }
      70              : 
      71              : 
      72              : struct TALER_FullPayto
      73            0 : TALER_JSON_wire_to_payto (const json_t *wire_s)
      74              : {
      75              :   json_t *payto_o;
      76              :   const char *payto_str;
      77            0 :   struct TALER_FullPayto payto = {
      78              :     NULL
      79              :   };
      80              :   char *err;
      81              : 
      82            0 :   payto_o = json_object_get (wire_s,
      83              :                              "payto_uri");
      84            0 :   if ( (NULL == payto_o) ||
      85            0 :        (NULL == (payto_str = json_string_value (payto_o))) )
      86              :   {
      87            0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
      88              :                 "Malformed wire record encountered: lacks payto://-url\n");
      89            0 :     return payto;
      90              :   }
      91            0 :   payto.full_payto = GNUNET_strdup (payto_str);
      92            0 :   if (NULL !=
      93            0 :       (err = TALER_payto_validate (payto)))
      94              :   {
      95            0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
      96              :                 "Malformed wire record encountered: payto URI `%s' invalid: %s\n",
      97              :                 payto_str,
      98              :                 err);
      99            0 :     GNUNET_free (payto.full_payto);
     100            0 :     GNUNET_free (err);
     101            0 :     return payto;
     102              :   }
     103            0 :   return payto;
     104              : }
     105              : 
     106              : 
     107              : char *
     108            0 : TALER_JSON_wire_to_method (const json_t *wire_s)
     109              : {
     110              :   json_t *payto_o;
     111              :   const char *payto_str;
     112              : 
     113            0 :   payto_o = json_object_get (wire_s,
     114              :                              "payto_uri");
     115            0 :   if ( (NULL == payto_o) ||
     116            0 :        (NULL == (payto_str = json_string_value (payto_o))) )
     117              :   {
     118            0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     119              :                 "Fatally malformed wire record encountered: lacks payto://-url\n");
     120            0 :     return NULL;
     121              :   }
     122            0 :   return TALER_payto_get_method (payto_str);
     123              : }
     124              : 
     125              : 
     126              : /* end of json_wire.c */