merchant

Merchant backend to process payments, run by merchants
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insert_unclaim_signature.c (3413B)

      1 /*
      2    This file is part of TALER
      3    Copyright (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 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/backenddb/insert_unclaim_signature.c
     18  * @brief Implementation of the insert_unclaim_signature function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "platform.h"
     22 #include <taler/taler_error_codes.h>
     23 #include <taler/taler_dbevents.h>
     24 #include <taler/taler_pq_lib.h>
     25 #include "merchant-database/insert_unclaim_signature.h"
     26 #include "helper.h"
     27 
     28 
     29 static char *
     30 get_notify_str (const char *order_id,
     31                 const struct TALER_MerchantPublicKeyP *merchant_pub)
     32 {
     33   struct TMH_OrderPayEventP pay_eh = {
     34     .header.size = htons (sizeof (pay_eh)),
     35     .header.type = htons (TALER_DBEVENT_MERCHANT_ORDER_STATUS_CHANGED),
     36     .merchant_pub = *merchant_pub
     37   };
     38 
     39   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
     40               "Notifying clients about status change of order %s\n",
     41               order_id);
     42   GNUNET_CRYPTO_hash (order_id,
     43                       strlen (order_id),
     44                       &pay_eh.h_order_id);
     45   return GNUNET_PQ_get_event_notify_channel (&pay_eh.header);
     46 }
     47 
     48 
     49 enum GNUNET_DB_QueryStatus
     50 TALER_MERCHANTDB_insert_unclaim_signature (
     51   struct TALER_MERCHANTDB_PostgresContext *pg,
     52   const char *instance_id,
     53   const struct TALER_MerchantPublicKeyP *merchant_pub,
     54   const char *order_id,
     55   const struct GNUNET_CRYPTO_EddsaPublicKey *nonce,
     56   const struct GNUNET_HashCode *h_contract,
     57   const struct GNUNET_CRYPTO_EddsaSignature *nsig)
     58 {
     59   char *nonce_str = GNUNET_STRINGS_data_to_string_alloc (nonce,
     60                                                          sizeof (*nonce));
     61   char *notify_str = get_notify_str (order_id,
     62                                      merchant_pub);
     63   struct GNUNET_PQ_QueryParam params[] = {
     64     GNUNET_PQ_query_param_string (instance_id),
     65     GNUNET_PQ_query_param_string (order_id),
     66     GNUNET_PQ_query_param_string (nonce_str),
     67     GNUNET_PQ_query_param_string (notify_str),
     68     GNUNET_PQ_query_param_auto_from_type (h_contract),
     69     GNUNET_PQ_query_param_auto_from_type (nsig),
     70     GNUNET_PQ_query_param_end
     71   };
     72   bool found;
     73   struct GNUNET_PQ_ResultSpec rs[] = {
     74     GNUNET_PQ_result_spec_bool ("out_found",
     75                                 &found),
     76     GNUNET_PQ_result_spec_end
     77   };
     78   enum GNUNET_DB_QueryStatus qs;
     79 
     80   check_connection (pg);
     81   PREPARE (pg,
     82            "insert_unclaim_signature",
     83            "SELECT"
     84            "  out_found"
     85            "  FROM merchant_do_insert_unclaim_signature"
     86            "($1, $2, $3, $4, $5, $6);");
     87   qs = GNUNET_PQ_eval_prepared_singleton_select (
     88     pg->conn,
     89     "insert_unclaim_signature",
     90     params,
     91     rs);
     92   GNUNET_free (nonce_str);
     93   GNUNET_free (notify_str);
     94   if (qs <= 0)
     95     return qs;
     96   return found
     97     ? GNUNET_DB_STATUS_SUCCESS_ONE_RESULT
     98     : GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
     99 }