donau

Donation authority for GNU Taler (experimental)
Log | Files | Refs | Submodules | README | LICENSE

insert_receipts_submitted.c (4863B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2023 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/donaudb/insert_receipts_submitted.c
     18  * @brief Implementation of the insert_receipts_submitted function for Postgres
     19  * @author Johannes Casaburi
     20  */
     21 #include <donau_config.h>
     22 #include <taler/taler_error_codes.h>
     23 #include <taler/taler_dbevents.h>
     24 #include <taler/taler_pq_lib.h>
     25 #include "insert_receipts_submitted.h"
     26 #include "helper.h"
     27 #include "donau_service.h"
     28 #include "donau_pq_lib.h"
     29 
     30 
     31 enum GNUNET_DB_QueryStatus
     32 DONAUDB_insert_receipts_submitted (
     33   struct DONAUDB_PostgresContext *ctx,
     34   struct DONAU_HashDonorTaxId *h_donor_tax_id,
     35   size_t num_dr,
     36   const struct DONAU_DonationReceipt donation_receipts[static num_dr],
     37   uint64_t donation_year,
     38   size_t *conflict_index,
     39   size_t *unknown_du_index)
     40 {
     41   struct GNUNET_HashCode h_donation_unit_pubs[GNUNET_NZL (num_dr)];
     42   struct DONAU_UniqueDonorIdentifierNonce nonces[GNUNET_NZL (num_dr)];
     43   struct DONAU_DonationUnitSignature donation_unit_sigs[GNUNET_NZL (num_dr)];
     44   struct GNUNET_PQ_QueryParam params[] = {
     45     GNUNET_PQ_query_param_auto_from_type (h_donor_tax_id),
     46     GNUNET_PQ_query_param_array_auto_from_type (num_dr,
     47                                                 h_donation_unit_pubs,
     48                                                 ctx->conn),
     49     GNUNET_PQ_query_param_array_auto_from_type (num_dr,
     50                                                 nonces,
     51                                                 ctx->conn),
     52     DONAU_PQ_query_param_array_donation_unit_sig (num_dr,
     53                                                   donation_unit_sigs,
     54                                                   ctx->conn),
     55     GNUNET_PQ_query_param_uint64 (&donation_year),
     56     GNUNET_PQ_query_param_end
     57   };
     58   bool *conflicted = NULL;
     59   size_t num_conflicted = num_dr;
     60   uint32_t unknown_du;
     61   struct GNUNET_PQ_ResultSpec rs[] = {
     62     GNUNET_PQ_result_spec_array_bool (ctx->conn,
     63                                       "conflicted",
     64                                       &num_conflicted,
     65                                       &conflicted),
     66     GNUNET_PQ_result_spec_uint32 ("unknown_du",
     67                                   &unknown_du),
     68     GNUNET_PQ_result_spec_end
     69   };
     70   enum GNUNET_DB_QueryStatus qs;
     71 
     72   *conflict_index = num_dr;
     73   *unknown_du_index = num_dr;
     74   for (unsigned int i = 0; i < num_dr; i++)
     75   {
     76     const struct DONAU_DonationReceipt *dr = &donation_receipts[i];
     77 
     78     h_donation_unit_pubs[i] = dr->h_donation_unit_pub.hash;
     79     nonces[i] = dr->nonce;
     80     donation_unit_sigs[i] = dr->donation_unit_sig;
     81     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
     82                 "Do insert submitted receipt\n");
     83   }
     84 
     85   PREPARE (ctx,
     86            "insert_receipts_submitted",
     87            "SELECT "
     88            " out_conflict AS conflicted"
     89            ",out_unknown_du AS unknown_du"
     90            " FROM do_insert_submitted_receipts"
     91            "($1,$2,$3,$4,$5);");
     92   qs = GNUNET_PQ_eval_prepared_singleton_select (ctx->conn,
     93                                                  "insert_receipts_submitted",
     94                                                  params,
     95                                                  rs);
     96   GNUNET_PQ_cleanup_query_params_closures (params);
     97   if (qs > 0)
     98   {
     99     if (0 != unknown_du)
    100     {
    101       /* Nothing was written; the batch names a donation unit we do not
    102          know.  Report it instead of letting the foreign key violation
    103          escape as a hard error. */
    104       *unknown_du_index = (size_t) (unknown_du - 1);
    105       GNUNET_free (conflicted);
    106       GNUNET_PQ_cleanup_result (rs);
    107       return qs;
    108     }
    109     for (size_t i = 0; i < num_conflicted; i++)
    110     {
    111       /* NOTE: `conflicted[i]' is TRUE only for the *non*-idempotent case,
    112          i.e. the row was not inserted AND the stored row is not this
    113          donor's.  That receipt was dropped and the caller must be told. */
    114       if (conflicted[i])
    115       {
    116         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
    117                     "Submitted donation receipt at index %llu conflicts with an existing entry!\n",
    118                     (unsigned long long) i);
    119         if (num_dr == *conflict_index)
    120           *conflict_index = i;
    121       }
    122     }
    123   }
    124   GNUNET_free (conflicted);
    125   GNUNET_PQ_cleanup_result (rs);
    126   return qs;
    127 }