Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022-2024 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/pg_lookup_wire_transfer.c
18 : * @brief Implementation of the lookup_wire_transfer function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/platform.h"
22 : #include "taler/taler_error_codes.h"
23 : #include "taler/taler_dbevents.h"
24 : #include "taler/taler_pq_lib.h"
25 : #include "pg_lookup_wire_transfer.h"
26 : #include "pg_helper.h"
27 :
28 : /**
29 : * Closure for #handle_wt_result.
30 : */
31 : struct WireTransferResultContext
32 : {
33 : /**
34 : * Function to call on each result.
35 : */
36 : TALER_EXCHANGEDB_AggregationDataCallback cb;
37 :
38 : /**
39 : * Closure for @e cb.
40 : */
41 : void *cb_cls;
42 :
43 : /**
44 : * Plugin context.
45 : */
46 : struct PostgresClosure *pg;
47 :
48 : /**
49 : * Set to #GNUNET_SYSERR on serious errors.
50 : */
51 : enum GNUNET_GenericReturnValue status;
52 : };
53 :
54 :
55 : /**
56 : * Function to be called with the results of a SELECT statement
57 : * that has returned @a num_results results. Helper function
58 : * for #TEH_PG_lookup_wire_transfer().
59 : *
60 : * @param cls closure of type `struct WireTransferResultContext *`
61 : * @param result the postgres result
62 : * @param num_results the number of results in @a result
63 : */
64 : static void
65 20 : handle_wt_result (void *cls,
66 : PGresult *result,
67 : unsigned int num_results)
68 : {
69 20 : struct WireTransferResultContext *ctx = cls;
70 20 : struct PostgresClosure *pg = ctx->pg;
71 :
72 79 : for (unsigned int i = 0; i<num_results; i++)
73 : {
74 : uint64_t rowid;
75 : struct TALER_PrivateContractHashP h_contract_terms;
76 : struct TALER_CoinSpendPublicKeyP coin_pub;
77 : struct TALER_FullPaytoHashP h_payto;
78 : struct TALER_MerchantPublicKeyP merchant_pub;
79 : struct GNUNET_TIME_Timestamp exec_time;
80 : struct TALER_Amount amount_with_fee;
81 : struct TALER_Amount deposit_fee;
82 : struct TALER_DenominationPublicKey denom_pub;
83 : struct TALER_FullPayto payto_uri;
84 59 : struct GNUNET_PQ_ResultSpec rs[] = {
85 59 : GNUNET_PQ_result_spec_uint64 ("aggregation_serial_id",
86 : &rowid),
87 59 : GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
88 : &h_contract_terms),
89 59 : GNUNET_PQ_result_spec_string ("payto_uri",
90 : &payto_uri.full_payto),
91 59 : GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto",
92 : &h_payto),
93 59 : TALER_PQ_result_spec_denom_pub ("denom_pub",
94 : &denom_pub),
95 59 : GNUNET_PQ_result_spec_auto_from_type ("coin_pub",
96 : &coin_pub),
97 59 : GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
98 : &merchant_pub),
99 59 : GNUNET_PQ_result_spec_timestamp ("execution_date",
100 : &exec_time),
101 59 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
102 : &amount_with_fee),
103 59 : TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
104 : &deposit_fee),
105 : GNUNET_PQ_result_spec_end
106 : };
107 :
108 59 : if (GNUNET_OK !=
109 59 : GNUNET_PQ_extract_result (result,
110 : rs,
111 : i))
112 : {
113 0 : GNUNET_break (0);
114 0 : ctx->status = GNUNET_SYSERR;
115 0 : return;
116 : }
117 59 : ctx->cb (ctx->cb_cls,
118 : rowid,
119 : &merchant_pub,
120 : payto_uri,
121 : &h_payto,
122 : exec_time,
123 : &h_contract_terms,
124 : &denom_pub,
125 : &coin_pub,
126 : &amount_with_fee,
127 : &deposit_fee);
128 59 : GNUNET_PQ_cleanup_result (rs);
129 : }
130 : }
131 :
132 :
133 : enum GNUNET_DB_QueryStatus
134 20 : TEH_PG_lookup_wire_transfer (
135 : void *cls,
136 : const struct TALER_WireTransferIdentifierRawP *wtid,
137 : TALER_EXCHANGEDB_AggregationDataCallback cb,
138 : void *cb_cls)
139 : {
140 20 : struct PostgresClosure *pg = cls;
141 20 : struct GNUNET_PQ_QueryParam params[] = {
142 20 : GNUNET_PQ_query_param_auto_from_type (wtid),
143 : GNUNET_PQ_query_param_end
144 : };
145 20 : struct WireTransferResultContext ctx = {
146 : .cb = cb,
147 : .cb_cls = cb_cls,
148 : .pg = pg,
149 : .status = GNUNET_OK
150 : };
151 : enum GNUNET_DB_QueryStatus qs;
152 :
153 20 : PREPARE (pg,
154 : "lookup_transactions",
155 : "SELECT"
156 : " aggregation_serial_id"
157 : ",bdep.h_contract_terms"
158 : ",payto_uri"
159 : ",wt.wire_target_h_payto"
160 : ",kc.coin_pub"
161 : ",bdep.merchant_pub"
162 : ",wire_out.execution_date"
163 : ",cdep.amount_with_fee"
164 : ",denom.fee_deposit"
165 : ",denom.denom_pub"
166 : " FROM aggregation_tracking"
167 : " JOIN batch_deposits bdep"
168 : " USING (batch_deposit_serial_id)"
169 : " JOIN coin_deposits cdep"
170 : " USING (batch_deposit_serial_id)"
171 : " JOIN wire_targets wt"
172 : " USING (wire_target_h_payto)"
173 : " JOIN known_coins kc"
174 : " USING (coin_pub)"
175 : " JOIN denominations denom"
176 : " USING (denominations_serial)"
177 : " JOIN wire_out"
178 : " USING (wtid_raw)"
179 : " WHERE wtid_raw=$1;");
180 20 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
181 : "lookup_transactions",
182 : params,
183 : &handle_wt_result,
184 : &ctx);
185 20 : if (GNUNET_OK != ctx.status)
186 0 : return GNUNET_DB_STATUS_HARD_ERROR;
187 20 : return qs;
188 : }
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