merchant

Merchant backend to process payments, run by merchants
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taler-merchant-httpd_post-orders-ORDER_ID-unclaim.c (4454B)

      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
      6   it under the terms of the GNU Affero General Public License as
      7   published by the Free Software Foundation; either version 3,
      8   or (at your option) any later version.
      9 
     10   TALER is distributed in the hope that it will be useful, but
     11   WITHOUT ANY WARRANTY; without even the implied warranty of
     12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13   GNU General Public License for more details.
     14 
     15   You should have received a copy of the GNU General Public
     16   License along with TALER; see the file COPYING.  If not,
     17   see <http://www.gnu.org/licenses/>
     18 */
     19 
     20 /**
     21  * @file src/backend/taler-merchant-httpd_post-orders-ORDER_ID-unclaim.c
     22  * @brief headers for POST /orders/$ID/unclaim handler
     23  * @author Christian Grothoff
     24  */
     25 #include "platform.h"
     26 #include <jansson.h>
     27 #include <taler/taler_signatures.h>
     28 #include <taler/taler_dbevents.h>
     29 #include <taler/taler_json_lib.h>
     30 #include "taler-merchant-httpd_get-private-orders.h"
     31 #include "taler-merchant-httpd_post-orders-ORDER_ID-unclaim.h"
     32 #include "merchant-database/insert_unclaim_signature.h"
     33 #include "merchant-database/preflight.h"
     34 
     35 
     36 enum MHD_Result
     37 TMH_post_orders_ID_unclaim (const struct TMH_RequestHandler *rh,
     38                             struct MHD_Connection *connection,
     39                             struct TMH_HandlerContext *hc)
     40 {
     41   const char *order_id = hc->infix;
     42   struct GNUNET_CRYPTO_EddsaPublicKey nonce;
     43   struct GNUNET_CRYPTO_EddsaSignature nsig;
     44   struct GNUNET_HashCode h_contract;
     45   enum GNUNET_DB_QueryStatus qs;
     46 
     47   {
     48     struct GNUNET_JSON_Specification spec[] = {
     49       GNUNET_JSON_spec_fixed_auto ("unclaim_sig",
     50                                    &nsig),
     51       GNUNET_JSON_spec_fixed_auto ("nonce",
     52                                    &nonce),
     53       GNUNET_JSON_spec_fixed_auto ("h_contract",
     54                                    &h_contract),
     55       GNUNET_JSON_spec_end ()
     56     };
     57     enum GNUNET_GenericReturnValue res;
     58 
     59     res = TALER_MHD_parse_json_data (connection,
     60                                      hc->request_body,
     61                                      spec);
     62     if (GNUNET_OK != res)
     63     {
     64       GNUNET_break_op (0);
     65       return (GNUNET_NO == res)
     66              ? MHD_YES
     67              : MHD_NO;
     68     }
     69   }
     70 
     71   if (GNUNET_OK !=
     72       TALER_wallet_order_unclaim_verify (&h_contract,
     73                                          &nonce,
     74                                          &nsig))
     75   {
     76     GNUNET_break_op (0);
     77     return TALER_MHD_reply_with_error (
     78       connection,
     79       MHD_HTTP_FORBIDDEN,
     80       TALER_EC_MERCHANT_POST_ORDERS_UNCLAIM_SIGNATURE_INVALID,
     81       "unclaim_sig");
     82   }
     83   TALER_MERCHANTDB_preflight (TMH_db);
     84   qs = TALER_MERCHANTDB_insert_unclaim_signature (TMH_db,
     85                                                   hc->instance->settings.id,
     86                                                   &hc->instance->merchant_pub,
     87                                                   order_id,
     88                                                   &nonce,
     89                                                   &h_contract,
     90                                                   &nsig);
     91   switch (qs)
     92   {
     93   case GNUNET_DB_STATUS_HARD_ERROR:
     94     GNUNET_break (0);
     95     return TALER_MHD_reply_with_error (connection,
     96                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
     97                                        TALER_EC_GENERIC_DB_COMMIT_FAILED,
     98                                        "insert_unclaim_signature");
     99   case GNUNET_DB_STATUS_SOFT_ERROR:
    100     GNUNET_break (0);
    101     return TALER_MHD_reply_with_error (connection,
    102                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
    103                                        TALER_EC_GENERIC_DB_SOFT_FAILURE,
    104                                        "insert_unclaim_signature");
    105   case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
    106     GNUNET_break (0);
    107     return TALER_MHD_reply_with_error (
    108       connection,
    109       MHD_HTTP_NOT_FOUND,
    110       TALER_EC_MERCHANT_POST_ORDERS_ID_CLAIM_NOT_FOUND,
    111       order_id);
    112   case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
    113     break; /* Good! return signature (below) */
    114   }
    115 
    116   return TALER_MHD_reply_static (connection,
    117                                  MHD_HTTP_NO_CONTENT,
    118                                  NULL,
    119                                  NULL,
    120                                  0);
    121 }
    122 
    123 
    124 /* end of taler-merchant-httpd_post-orders-ORDER_ID-unclaim.c */