Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022 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/iterate_recoup_refreshes_above_serial_id.c
18 : * @brief Implementation of the iterate_recoup_refreshes_above_serial_id function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/taler_pq_lib.h"
22 : #include "exchange-database/iterate_recoup_refreshes_above_serial_id.h"
23 : #include "helper.h"
24 :
25 :
26 : /**
27 : * Closure for #recoup_refresh_serial_helper_cb().
28 : */
29 : struct RecoupRefreshSerialContext
30 : {
31 :
32 : /**
33 : * Callback to call.
34 : */
35 : TALER_EXCHANGEDB_RecoupRefreshCallback cb;
36 :
37 : /**
38 : * Closure for @e cb.
39 : */
40 : void *cb_cls;
41 :
42 : /**
43 : * Plugin context.
44 : */
45 : struct TALER_EXCHANGEDB_PostgresContext *pg;
46 :
47 : /**
48 : * Status code, set to #GNUNET_SYSERR on hard errors.
49 : */
50 : enum GNUNET_GenericReturnValue status;
51 : };
52 :
53 :
54 : /**
55 : * Helper function to be called with the results of a SELECT statement
56 : * that has returned @a num_results results.
57 : *
58 : * @param cls closure of type `struct RecoupRefreshSerialContext`
59 : * @param result the postgres result
60 : * @param num_results the number of results in @a result
61 : */
62 : static void
63 12 : recoup_refresh_serial_helper_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 12 : struct RecoupRefreshSerialContext *psc = cls;
68 12 : struct TALER_EXCHANGEDB_PostgresContext *pg = psc->pg;
69 :
70 13 : for (unsigned int i = 0; i<num_results; i++)
71 : {
72 : uint64_t rowid;
73 : struct TALER_CoinSpendPublicKeyP old_coin_pub;
74 : struct TALER_CoinPublicInfo coin;
75 : struct TALER_CoinSpendSignatureP coin_sig;
76 : union GNUNET_CRYPTO_BlindingSecretP coin_blind;
77 : struct TALER_DenominationPublicKey denom_pub;
78 : struct TALER_DenominationHashP old_denom_pub_hash;
79 : struct TALER_Amount amount;
80 : struct GNUNET_TIME_Timestamp timestamp;
81 1 : struct GNUNET_PQ_ResultSpec rs[] = {
82 1 : GNUNET_PQ_result_spec_uint64 ("recoup_refresh_uuid",
83 : &rowid),
84 1 : GNUNET_PQ_result_spec_timestamp ("recoup_timestamp",
85 : ×tamp),
86 1 : GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
87 : &old_coin_pub),
88 1 : GNUNET_PQ_result_spec_auto_from_type ("old_denom_pub_hash",
89 : &old_denom_pub_hash),
90 1 : GNUNET_PQ_result_spec_auto_from_type ("coin_pub",
91 : &coin.coin_pub),
92 1 : GNUNET_PQ_result_spec_auto_from_type ("coin_sig",
93 : &coin_sig),
94 1 : GNUNET_PQ_result_spec_auto_from_type ("coin_blind",
95 : &coin_blind),
96 1 : TALER_PQ_result_spec_denom_pub ("denom_pub",
97 : &denom_pub),
98 1 : GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
99 : &coin.denom_pub_hash),
100 1 : GNUNET_PQ_result_spec_allow_null (
101 : GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
102 : &coin.h_age_commitment),
103 : &coin.no_age_commitment),
104 1 : TALER_PQ_result_spec_denom_sig ("denom_sig",
105 : &coin.denom_sig),
106 1 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
107 : &amount),
108 : GNUNET_PQ_result_spec_end
109 : };
110 : enum GNUNET_GenericReturnValue ret;
111 :
112 1 : if (GNUNET_OK !=
113 1 : GNUNET_PQ_extract_result (result,
114 : rs,
115 : i))
116 : {
117 0 : GNUNET_break (0);
118 0 : psc->status = GNUNET_SYSERR;
119 0 : return;
120 : }
121 1 : ret = psc->cb (psc->cb_cls,
122 : rowid,
123 : timestamp,
124 : &amount,
125 : &old_coin_pub,
126 : &old_denom_pub_hash,
127 : &coin,
128 : &denom_pub,
129 : &coin_sig,
130 : &coin_blind);
131 1 : GNUNET_PQ_cleanup_result (rs);
132 1 : if (GNUNET_OK != ret)
133 0 : break;
134 : }
135 : }
136 :
137 :
138 : enum GNUNET_DB_QueryStatus
139 12 : TALER_EXCHANGEDB_iterate_recoup_refreshes_above_serial_id (
140 : struct TALER_EXCHANGEDB_PostgresContext *pg,
141 : uint64_t serial_id,
142 : TALER_EXCHANGEDB_RecoupRefreshCallback cb,
143 : void *cb_cls)
144 : {
145 12 : struct GNUNET_PQ_QueryParam params[] = {
146 12 : GNUNET_PQ_query_param_uint64 (&serial_id),
147 : GNUNET_PQ_query_param_end
148 : };
149 12 : struct RecoupRefreshSerialContext psc = {
150 : .cb = cb,
151 : .cb_cls = cb_cls,
152 : .pg = pg,
153 : .status = GNUNET_OK
154 : };
155 : enum GNUNET_DB_QueryStatus qs;
156 :
157 12 : PREPARE (pg,
158 : "iterate_recoup_refreshes_above_serial_id",
159 : "SELECT"
160 : " rr.recoup_refresh_uuid"
161 : ",rr.recoup_timestamp"
162 : ",rr.coin_sig"
163 : ",rr.coin_blind"
164 : ",rr.amount"
165 : ",new_coins.age_commitment_hash"
166 : ",new_coins.coin_pub AS coin_pub"
167 : ",new_denoms.denom_pub AS denom_pub"
168 : ",new_denoms.denom_pub_hash"
169 : ",new_coins.denom_sig AS denom_sig"
170 : ",old_coins.coin_pub AS old_coin_pub"
171 : ",old_denoms.denom_pub_hash AS old_denom_pub_hash"
172 : " FROM recoup_refresh rr"
173 : " INNER JOIN refresh r"
174 : " ON (r.refresh_id = rr.refresh_id)"
175 : " INNER JOIN known_coins old_coins"
176 : " ON (r.old_coin_pub = old_coins.coin_pub)"
177 : " INNER JOIN known_coins new_coins"
178 : " ON (rr.coin_pub = new_coins.coin_pub)"
179 : " INNER JOIN denominations new_denoms"
180 : " ON (new_coins.denominations_serial = new_denoms.denominations_serial)"
181 : " INNER JOIN denominations old_denoms"
182 : " ON (old_coins.denominations_serial = old_denoms.denominations_serial)"
183 : " WHERE rr.recoup_refresh_uuid>=$1"
184 : " ORDER BY rr.recoup_refresh_uuid ASC;");
185 12 : qs = GNUNET_PQ_eval_prepared_multi_select (
186 : pg->conn,
187 : "iterate_recoup_refreshes_above_serial_id",
188 : params,
189 : &recoup_refresh_serial_helper_cb,
190 : &psc);
191 12 : if (GNUNET_OK != psc.status)
192 0 : return GNUNET_DB_STATUS_HARD_ERROR;
193 12 : return qs;
194 : }
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