exchange

Base system with REST service to issue digital coins, run by the payment service provider
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do_deposit.c (7255B)


      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022-2026 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 exchangedb/do_deposit.c
     18  * @brief Implementation of the do_deposit function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_pq_lib.h"
     22 #include "exchange-database/do_deposit.h"
     23 #include "helper.h"
     24 #include "exchange-database/compute_shard.h"
     25 
     26 
     27 enum GNUNET_DB_QueryStatus
     28 TALER_EXCHANGEDB_do_deposit (
     29   struct TALER_EXCHANGEDB_PostgresContext *pg,
     30   const struct TALER_EXCHANGEDB_BatchDeposit *bd,
     31   const struct TALER_Amount deposit_fees[],
     32   struct GNUNET_TIME_Timestamp *exchange_timestamp,
     33   struct TALER_Amount *accumulated_total_without_fee,
     34   bool *balance_ok,
     35   uint32_t *bad_balance_index,
     36   bool *ctr_conflict)
     37 {
     38   uint64_t deposit_shard = TALER_EXCHANGEDB_compute_shard (&bd->merchant_pub);
     39   const struct TALER_CoinSpendPublicKeyP *coin_pubs[GNUNET_NZL (bd->num_cdis)];
     40   const struct TALER_CoinSpendSignatureP *coin_sigs[GNUNET_NZL (bd->num_cdis)];
     41   struct TALER_Amount amounts_with_fee[GNUNET_NZL (bd->num_cdis)];
     42   struct TALER_Amount total_amount;
     43   struct TALER_Amount total_without_fee;
     44   struct TALER_NormalizedPaytoHashP h_normalized_payto;
     45   struct GNUNET_PQ_QueryParam params[] = {
     46     /* data for batch_deposits */
     47     GNUNET_PQ_query_param_uint64 (&deposit_shard),
     48     GNUNET_PQ_query_param_auto_from_type (&bd->merchant_pub),
     49     GNUNET_PQ_query_param_auto_from_type (&bd->merchant_sig),
     50     GNUNET_PQ_query_param_timestamp (&bd->wallet_timestamp),
     51     GNUNET_PQ_query_param_timestamp (exchange_timestamp),
     52     GNUNET_PQ_query_param_timestamp (&bd->refund_deadline),
     53     GNUNET_PQ_query_param_timestamp (&bd->wire_deadline),
     54     GNUNET_PQ_query_param_auto_from_type (&bd->h_contract_terms),
     55     (bd->no_wallet_data_hash)
     56     ? GNUNET_PQ_query_param_null ()
     57     : GNUNET_PQ_query_param_auto_from_type (&bd->wallet_data_hash),
     58     GNUNET_PQ_query_param_auto_from_type (&bd->wire_salt),
     59     GNUNET_PQ_query_param_auto_from_type (&bd->wire_target_h_payto),
     60     GNUNET_PQ_query_param_auto_from_type (&h_normalized_payto),
     61     (0 == bd->policy_details_serial_id)
     62     ? GNUNET_PQ_query_param_null ()
     63     : GNUNET_PQ_query_param_uint64 (&bd->policy_details_serial_id),
     64     GNUNET_PQ_query_param_bool (bd->policy_blocked),
     65     /* to create entry in wire_targets */
     66     GNUNET_PQ_query_param_string (bd->receiver_wire_account.full_payto),
     67     /* arrays for coin_deposits */
     68     GNUNET_PQ_query_param_array_ptrs_auto_from_type (bd->num_cdis,
     69                                                      coin_pubs,
     70                                                      pg->conn),
     71     GNUNET_PQ_query_param_array_ptrs_auto_from_type (bd->num_cdis,
     72                                                      coin_sigs,
     73                                                      pg->conn),
     74     TALER_PQ_query_param_array_amount (bd->num_cdis,
     75                                        amounts_with_fee,
     76                                        pg->conn),
     77     TALER_PQ_query_param_array_amount (bd->num_cdis,
     78                                        deposit_fees,
     79                                        pg->conn),
     80     TALER_PQ_query_param_amount (pg->conn,
     81                                  &total_amount),
     82     TALER_PQ_query_param_amount (pg->conn,
     83                                  &total_without_fee),
     84     GNUNET_PQ_query_param_bool (TALER_payto_is_wallet (
     85                                   bd->receiver_wire_account.full_payto)),
     86     NULL == bd->extra_wire_subject_metadata
     87     ? GNUNET_PQ_query_param_null ()
     88     : GNUNET_PQ_query_param_string (bd->extra_wire_subject_metadata),
     89     GNUNET_PQ_query_param_end
     90   };
     91   bool no_time;
     92   bool no_amount;
     93   struct GNUNET_PQ_ResultSpec rs[] = {
     94     GNUNET_PQ_result_spec_allow_null (
     95       GNUNET_PQ_result_spec_timestamp ("exchange_timestamp",
     96                                        exchange_timestamp),
     97       &no_time),
     98     GNUNET_PQ_result_spec_allow_null (
     99       TALER_PQ_RESULT_SPEC_AMOUNT ("accumulated_total_without_fee",
    100                                    accumulated_total_without_fee),
    101       &no_amount),
    102     GNUNET_PQ_result_spec_allow_null (
    103       GNUNET_PQ_result_spec_uint32 ("insufficient_balance_coin_index",
    104                                     bad_balance_index),
    105       balance_ok),
    106     GNUNET_PQ_result_spec_bool ("conflicted",
    107                                 ctr_conflict),
    108     GNUNET_PQ_result_spec_end
    109   };
    110   enum GNUNET_DB_QueryStatus qs;
    111 
    112   GNUNET_assert (0 < bd->num_cdis);
    113   TALER_full_payto_normalize_and_hash (bd->receiver_wire_account,
    114                                        &h_normalized_payto);
    115   for (unsigned int i = 0; i < bd->num_cdis; i++)
    116   {
    117     const struct TALER_EXCHANGEDB_CoinDepositInformation *cdi
    118       = &bd->cdis[i];
    119 
    120     if (0 == i)
    121     {
    122       total_amount = cdi->amount_with_fee;
    123       total_without_fee = cdi->amount_with_fee;
    124     }
    125     else
    126     {
    127       GNUNET_assert (0 <=
    128                      TALER_amount_add (&total_amount,
    129                                        &total_amount,
    130                                        &cdi->amount_with_fee));
    131       GNUNET_assert (0 <=
    132                      TALER_amount_add (&total_without_fee,
    133                                        &total_without_fee,
    134                                        &cdi->amount_with_fee));
    135     }
    136     GNUNET_assert (0 <=
    137                    TALER_amount_subtract (
    138                      &total_without_fee,
    139                      &total_without_fee,
    140                      &deposit_fees[i]));
    141 
    142     amounts_with_fee[i] = cdi->amount_with_fee;
    143     coin_pubs[i] = &cdi->coin.coin_pub;
    144     coin_sigs[i] = &cdi->csig;
    145     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
    146                 "Do deposit %u = %s\n",
    147                 i,
    148                 TALER_B2S (&cdi->coin.coin_pub));
    149   }
    150   PREPARE (pg,
    151            "call_deposit",
    152            "SELECT "
    153            " out_exchange_timestamp AS exchange_timestamp"
    154            ",out_accumulated_total_without_fee AS accumulated_total_without_fee"
    155            ",out_insufficient_balance_coin_index AS insufficient_balance_coin_index"
    156            ",out_conflict AS conflicted"
    157            " FROM exchange_do_deposit"
    158            " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10"
    159            ",$11,$12,$13,$14,$15,$16,$17,$18,$19,$20"
    160            ",$21,$22,$23);");
    161   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
    162                                                  "call_deposit",
    163                                                  params,
    164                                                  rs);
    165   GNUNET_PQ_cleanup_query_params_closures (params);
    166   if (no_amount)
    167     memset (accumulated_total_without_fee,
    168             0,
    169             sizeof (struct TALER_Amount));
    170   return qs;
    171 }