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/select_recoup_refresh_above_serial_id.c
18 : * @brief Implementation of the select_recoup_refresh_above_serial_id function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/taler_pq_lib.h"
22 : #include "exchange-database/select_recoup_refresh_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 0 : recoup_refresh_serial_helper_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 0 : struct RecoupRefreshSerialContext *psc = cls;
68 0 : struct TALER_EXCHANGEDB_PostgresContext *pg = psc->pg;
69 :
70 0 : 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 TALER_BlindedCoinHashP h_blind_ev;
81 : struct GNUNET_TIME_Timestamp timestamp;
82 0 : struct GNUNET_PQ_ResultSpec rs[] = {
83 0 : GNUNET_PQ_result_spec_uint64 ("recoup_refresh_uuid",
84 : &rowid),
85 0 : GNUNET_PQ_result_spec_timestamp ("recoup_timestamp",
86 : ×tamp),
87 0 : GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
88 : &old_coin_pub),
89 0 : GNUNET_PQ_result_spec_auto_from_type ("old_denom_pub_hash",
90 : &old_denom_pub_hash),
91 0 : GNUNET_PQ_result_spec_auto_from_type ("coin_pub",
92 : &coin.coin_pub),
93 0 : GNUNET_PQ_result_spec_auto_from_type ("coin_sig",
94 : &coin_sig),
95 0 : GNUNET_PQ_result_spec_auto_from_type ("coin_blind",
96 : &coin_blind),
97 0 : TALER_PQ_result_spec_denom_pub ("denom_pub",
98 : &denom_pub),
99 0 : GNUNET_PQ_result_spec_auto_from_type ("h_blind_ev",
100 : &h_blind_ev),
101 0 : GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
102 : &coin.denom_pub_hash),
103 0 : GNUNET_PQ_result_spec_allow_null (
104 : GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
105 : &coin.h_age_commitment),
106 : &coin.no_age_commitment),
107 0 : TALER_PQ_result_spec_denom_sig ("denom_sig",
108 : &coin.denom_sig),
109 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
110 : &amount),
111 : GNUNET_PQ_result_spec_end
112 : };
113 : enum GNUNET_GenericReturnValue ret;
114 :
115 0 : if (GNUNET_OK !=
116 0 : GNUNET_PQ_extract_result (result,
117 : rs,
118 : i))
119 : {
120 0 : GNUNET_break (0);
121 0 : psc->status = GNUNET_SYSERR;
122 0 : return;
123 : }
124 0 : ret = psc->cb (psc->cb_cls,
125 : rowid,
126 : timestamp,
127 : &amount,
128 : &old_coin_pub,
129 : &old_denom_pub_hash,
130 : &coin,
131 : &denom_pub,
132 : &coin_sig,
133 : &coin_blind);
134 0 : GNUNET_PQ_cleanup_result (rs);
135 0 : if (GNUNET_OK != ret)
136 0 : break;
137 : }
138 : }
139 :
140 :
141 : enum GNUNET_DB_QueryStatus
142 0 : TALER_EXCHANGEDB_select_recoup_refresh_above_serial_id (
143 : struct TALER_EXCHANGEDB_PostgresContext *pg,
144 : uint64_t serial_id,
145 : TALER_EXCHANGEDB_RecoupRefreshCallback cb,
146 : void *cb_cls)
147 : {
148 0 : struct GNUNET_PQ_QueryParam params[] = {
149 0 : GNUNET_PQ_query_param_uint64 (&serial_id),
150 : GNUNET_PQ_query_param_end
151 : };
152 0 : struct RecoupRefreshSerialContext psc = {
153 : .cb = cb,
154 : .cb_cls = cb_cls,
155 : .pg = pg,
156 : .status = GNUNET_OK
157 : };
158 : enum GNUNET_DB_QueryStatus qs;
159 :
160 0 : PREPARE (pg,
161 : "select_recoup_refresh_above_serial_id",
162 : "SELECT"
163 : " rr.recoup_refresh_uuid"
164 : ",rr.recoup_timestamp"
165 : ",rr.coin_sig"
166 : ",rr.coin_blind"
167 : ",rr.amount"
168 : ",rrc.h_coin_ev AS h_blind_ev" // FIXME:-#9828 r.rc? r.selected_h? Old logic wanted a TALER_BlindedCoinHash, which we now need to derive (from rr.coin_blind)
169 : ",new_coins.age_commitment_hash"
170 : ",new_coins.coin_pub AS coin_pub"
171 : ",new_denoms.denom_pub AS denom_pub"
172 : ",new_denoms.denom_pub_hash"
173 : ",new_coins.denom_sig AS denom_sig"
174 : ",old_coins.coin_pub AS old_coin_pub"
175 : ",old_denoms.denom_pub_hash AS old_denom_pub_hash"
176 : " FROM recoup_refresh rr"
177 : " INNER JOIN refresh_revealed_coins rrc" // FIXME-#9828: no such table anymore!
178 : // but we have 'refresh_id" which is an FK into 'refresh'!
179 : " USING (rrc_serial)"
180 : " INNER JOIN refresh r"
181 : // but we have 'refresh_id" which is an FK into 'refresh'!
182 : " USING (refresh_id)"
183 : " INNER JOIN known_coins old_coins"
184 : " ON (r.old_coin_pub = old_coins.coin_pub)"
185 : " INNER JOIN known_coins new_coins"
186 : " ON (rr.coin_pub == new_coins.coin_pub)"
187 : " INNER JOIN refresh_commitments rfc"
188 : " ON (rrc.melt_serial_id = rfc.melt_serial_id)"
189 : " INNER JOIN denominations new_denoms"
190 : " ON (new_coins.denominations_serial = new_denoms.denominations_serial)"
191 : " INNER JOIN denominations old_denoms"
192 : " ON (old_coins.denominations_serial = old_denoms.denominations_serial)"
193 : " WHERE recoup_refresh_uuid>=$1"
194 : " ORDER BY recoup_refresh_uuid ASC;");
195 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
196 : pg->conn,
197 : "select_recoup_refresh_above_serial_id",
198 : params,
199 : &recoup_refresh_serial_helper_cb,
200 : &psc);
201 0 : if (GNUNET_OK != psc.status)
202 0 : return GNUNET_DB_STATUS_HARD_ERROR;
203 0 : return qs;
204 : }
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