Line data    Source code

       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_dbevents.h>
      23              : #include <taler/taler_pq_lib.h>
      24              : #include "merchant-database/insert_unclaim_signature.h"
      25              : #include "helper.h"
      26              : 
      27              : /**
      28              :  * Compute the notification code for the given
      29              :  * @a order_id and @a merchant_pub.
      30              :  *
      31              :  * @param order_id order to notify for
      32              :  * @param merchant_pub merchant to notify for
      33              :  * @return notification code, to be freed by caller
      34              :  */
      35              : static char *
      36            0 : get_notify_str (const char *order_id,
      37              :                 const struct TALER_MerchantPublicKeyP *merchant_pub)
      38              : {
      39            0 :   struct TMH_OrderPayEventP pay_eh = {
      40            0 :     .header.size = htons (sizeof (pay_eh)),
      41            0 :     .header.type = htons (TALER_DBEVENT_MERCHANT_ORDER_STATUS_CHANGED),
      42              :     .merchant_pub = *merchant_pub
      43              :   };
      44              : 
      45            0 :   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
      46              :               "Notifying clients about status change of order %s\n",
      47              :               order_id);
      48            0 :   GNUNET_CRYPTO_hash (order_id,
      49              :                       strlen (order_id),
      50              :                       &pay_eh.h_order_id);
      51            0 :   return GNUNET_PQ_get_event_notify_channel (&pay_eh.header);
      52              : }
      53              : 
      54              : 
      55              : enum GNUNET_DB_QueryStatus
      56            0 : TALER_MERCHANTDB_insert_unclaim_signature (
      57              :   struct TALER_MERCHANTDB_PostgresContext *pg,
      58              :   const char *instance_id,
      59              :   const char *order_id,
      60              :   const struct GNUNET_CRYPTO_EddsaPublicKey *nonce,
      61              :   const struct GNUNET_HashCode *h_contract,
      62              :   const struct GNUNET_CRYPTO_EddsaSignature *nsig)
      63              : {
      64              :   char nonce_str[sizeof (*nonce) * 2];
      65              :   char *end;
      66              :   char *notify_str;
      67              :   bool found;
      68            0 :   struct GNUNET_PQ_ResultSpec rs[] = {
      69            0 :     GNUNET_PQ_result_spec_bool ("out_found",
      70              :                                 &found),
      71              :     GNUNET_PQ_result_spec_end
      72              :   };
      73              :   enum GNUNET_DB_QueryStatus qs;
      74              : 
      75            0 :   GNUNET_assert (NULL != pg->current_merchant_id);
      76            0 :   GNUNET_assert (0 == strcmp (instance_id,
      77              :                               pg->current_merchant_id));
      78            0 :   end = GNUNET_STRINGS_data_to_string (nonce,
      79              :                                        sizeof (*nonce),
      80              :                                        nonce_str,
      81              :                                        sizeof (nonce_str));
      82            0 :   GNUNET_assert (NULL != end);
      83            0 :   *end = '\0';
      84            0 :   notify_str = get_notify_str (order_id,
      85            0 :                                &pg->current_merchant_pub);
      86            0 :   TMH_PQ_prepare_anon (pg,
      87              :                        "SELECT"
      88              :                        "  out_found"
      89              :                        "  FROM merchant_do_insert_unclaim_signature"
      90              :                        "($1, $2, $3, $4, $5);");
      91              :   {
      92            0 :     struct GNUNET_PQ_QueryParam params[] = {
      93            0 :       GNUNET_PQ_query_param_string (order_id),
      94            0 :       GNUNET_PQ_query_param_string (nonce_str),
      95            0 :       GNUNET_PQ_query_param_string (notify_str),
      96            0 :       GNUNET_PQ_query_param_auto_from_type (h_contract),
      97            0 :       GNUNET_PQ_query_param_auto_from_type (nsig),
      98              :       GNUNET_PQ_query_param_end
      99              :     };
     100              : 
     101            0 :     qs = GNUNET_PQ_eval_prepared_singleton_select (
     102              :       pg->conn,
     103              :       "",
     104              :       params,
     105              :       rs);
     106              :   }
     107            0 :   GNUNET_free (notify_str);
     108            0 :   if (qs <= 0)
     109            0 :     return qs;
     110              :   /* FIXME: not a precise set of possible errors... (see stored proc!) */
     111              :   return found
     112              :     ? GNUNET_DB_STATUS_SUCCESS_ONE_RESULT
     113            0 :     : GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
     114              : }