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/pg_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 "platform.h"
22 : #include "taler_error_codes.h"
23 : #include "taler_dbevents.h"
24 : #include "taler_pq_lib.h"
25 : #include "pg_select_recoup_refresh_above_serial_id.h"
26 : #include "pg_helper.h"
27 :
28 :
29 : /**
30 : * Closure for #recoup_refresh_serial_helper_cb().
31 : */
32 : struct RecoupRefreshSerialContext
33 : {
34 :
35 : /**
36 : * Callback to call.
37 : */
38 : TALER_EXCHANGEDB_RecoupRefreshCallback cb;
39 :
40 : /**
41 : * Closure for @e cb.
42 : */
43 : void *cb_cls;
44 :
45 : /**
46 : * Plugin context.
47 : */
48 : struct PostgresClosure *pg;
49 :
50 : /**
51 : * Status code, set to #GNUNET_SYSERR on hard errors.
52 : */
53 : enum GNUNET_GenericReturnValue status;
54 : };
55 :
56 :
57 : /**
58 : * Helper function to be called with the results of a SELECT statement
59 : * that has returned @a num_results results.
60 : *
61 : * @param cls closure of type `struct RecoupRefreshSerialContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 0 : recoup_refresh_serial_helper_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 0 : struct RecoupRefreshSerialContext *psc = cls;
71 0 : struct PostgresClosure *pg = psc->pg;
72 :
73 0 : for (unsigned int i = 0; i<num_results; i++)
74 : {
75 : uint64_t rowid;
76 : struct TALER_CoinSpendPublicKeyP old_coin_pub;
77 : struct TALER_CoinPublicInfo coin;
78 : struct TALER_CoinSpendSignatureP coin_sig;
79 : union GNUNET_CRYPTO_BlindingSecretP coin_blind;
80 : struct TALER_DenominationPublicKey denom_pub;
81 : struct TALER_DenominationHashP old_denom_pub_hash;
82 : struct TALER_Amount amount;
83 : struct TALER_BlindedCoinHashP h_blind_ev;
84 : struct GNUNET_TIME_Timestamp timestamp;
85 0 : struct GNUNET_PQ_ResultSpec rs[] = {
86 0 : GNUNET_PQ_result_spec_uint64 ("recoup_refresh_uuid",
87 : &rowid),
88 0 : GNUNET_PQ_result_spec_timestamp ("recoup_timestamp",
89 : ×tamp),
90 0 : GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
91 : &old_coin_pub),
92 0 : GNUNET_PQ_result_spec_auto_from_type ("old_denom_pub_hash",
93 : &old_denom_pub_hash),
94 0 : GNUNET_PQ_result_spec_auto_from_type ("coin_pub",
95 : &coin.coin_pub),
96 0 : GNUNET_PQ_result_spec_auto_from_type ("coin_sig",
97 : &coin_sig),
98 0 : GNUNET_PQ_result_spec_auto_from_type ("coin_blind",
99 : &coin_blind),
100 0 : TALER_PQ_result_spec_denom_pub ("denom_pub",
101 : &denom_pub),
102 0 : GNUNET_PQ_result_spec_auto_from_type ("h_blind_ev",
103 : &h_blind_ev),
104 0 : GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
105 : &coin.denom_pub_hash),
106 0 : GNUNET_PQ_result_spec_allow_null (
107 : GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
108 : &coin.h_age_commitment),
109 : &coin.no_age_commitment),
110 0 : TALER_PQ_result_spec_denom_sig ("denom_sig",
111 : &coin.denom_sig),
112 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
113 : &amount),
114 : GNUNET_PQ_result_spec_end
115 : };
116 : enum GNUNET_GenericReturnValue ret;
117 :
118 0 : if (GNUNET_OK !=
119 0 : GNUNET_PQ_extract_result (result,
120 : rs,
121 : i))
122 : {
123 0 : GNUNET_break (0);
124 0 : psc->status = GNUNET_SYSERR;
125 0 : return;
126 : }
127 0 : ret = psc->cb (psc->cb_cls,
128 : rowid,
129 : timestamp,
130 : &amount,
131 : &old_coin_pub,
132 : &old_denom_pub_hash,
133 : &coin,
134 : &denom_pub,
135 : &coin_sig,
136 : &coin_blind);
137 0 : GNUNET_PQ_cleanup_result (rs);
138 0 : if (GNUNET_OK != ret)
139 0 : break;
140 : }
141 : }
142 :
143 :
144 : enum GNUNET_DB_QueryStatus
145 0 : TEH_PG_select_recoup_refresh_above_serial_id (
146 : void *cls,
147 : uint64_t serial_id,
148 : TALER_EXCHANGEDB_RecoupRefreshCallback cb,
149 : void *cb_cls)
150 : {
151 0 : struct PostgresClosure *pg = cls;
152 0 : struct GNUNET_PQ_QueryParam params[] = {
153 0 : GNUNET_PQ_query_param_uint64 (&serial_id),
154 : GNUNET_PQ_query_param_end
155 : };
156 0 : struct RecoupRefreshSerialContext psc = {
157 : .cb = cb,
158 : .cb_cls = cb_cls,
159 : .pg = pg,
160 : .status = GNUNET_OK
161 : };
162 : enum GNUNET_DB_QueryStatus qs;
163 :
164 0 : PREPARE (pg,
165 : "select_recoup_refresh_above_serial_id",
166 : "SELECT"
167 : " rr.recoup_refresh_uuid"
168 : ",rr.recoup_timestamp"
169 : ",rr.coin_sig"
170 : ",rr.coin_blind"
171 : ",rr.amount"
172 : ",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)
173 : ",new_coins.age_commitment_hash"
174 : ",new_coins.coin_pub AS coin_pub"
175 : ",new_denoms.denom_pub AS denom_pub"
176 : ",new_denoms.denom_pub_hash"
177 : ",new_coins.denom_sig AS denom_sig"
178 : ",old_coins.coin_pub AS old_coin_pub"
179 : ",old_denoms.denom_pub_hash AS old_denom_pub_hash"
180 : " FROM recoup_refresh rr"
181 : " INNER JOIN refresh_revealed_coins rrc" // FIXME-#9828: no such table anymore!
182 : // but we have 'refresh_id" which is an FK into 'refresh'!
183 : " USING (rrc_serial)"
184 : " INNER JOIN refresh r"
185 : // but we have 'refresh_id" which is an FK into 'refresh'!
186 : " USING (refresh_id)"
187 : " INNER JOIN known_coins old_coins"
188 : " ON (r.old_coin_pub = old_coins.coin_pub)"
189 : " INNER JOIN known_coins new_coins"
190 : " ON (rr.coin_pub == new_coins.coin_pub)"
191 : " INNER JOIN refresh_commitments rfc"
192 : " ON (rrc.melt_serial_id = rfc.melt_serial_id)"
193 : " INNER JOIN denominations new_denoms"
194 : " ON (new_coins.denominations_serial = new_denoms.denominations_serial)"
195 : " INNER JOIN denominations old_denoms"
196 : " ON (old_coins.denominations_serial = old_denoms.denominations_serial)"
197 : " WHERE recoup_refresh_uuid>=$1"
198 : " ORDER BY recoup_refresh_uuid ASC;");
199 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
200 : pg->conn,
201 : "select_recoup_refresh_above_serial_id",
202 : params,
203 : &recoup_refresh_serial_helper_cb,
204 : &psc);
205 0 : if (GNUNET_OK != psc.status)
206 0 : return GNUNET_DB_STATUS_HARD_ERROR;
207 0 : return qs;
208 : }
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