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