Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022-2023 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 : /**
18 : * @file get_deposit_confirmations.c
19 : * @brief Low-level (statement-level) Postgres database access for the exchange
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/taler_pq_lib.h"
23 : #include "auditor-database/get_deposit_confirmations.h"
24 : #include "pg_helper.h"
25 :
26 :
27 : /**
28 : * Closure for #deposit_confirmation_cb().
29 : */
30 : struct DepositConfirmationContext
31 : {
32 :
33 : /**
34 : * Function to call for each deposit confirmation.
35 : */
36 : TALER_AUDITORDB_DepositConfirmationCallback cb;
37 :
38 : /**
39 : * Closure for @e cb
40 : */
41 : void *cb_cls;
42 :
43 : /**
44 : * Plugin context.
45 : */
46 : struct TALER_AUDITORDB_PostgresContext *pg;
47 :
48 : /**
49 : * Query status to return.
50 : */
51 : enum GNUNET_DB_QueryStatus qs;
52 : };
53 :
54 :
55 : /**
56 : * Helper function for #TALER_AUDITORDB_get_deposit_confirmations().
57 : * To be called with the results of a SELECT statement
58 : * that has returned @a num_results results.
59 : *
60 : * @param cls closure of type `struct DepositConfirmationContext *`
61 : * @param result the postgres result
62 : * @param num_results the number of results in @a result
63 : */
64 : static void
65 4 : deposit_confirmation_cb (void *cls,
66 : PGresult *result,
67 : unsigned int num_results)
68 : {
69 4 : struct DepositConfirmationContext *dcc = cls;
70 4 : struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg;
71 :
72 4 : for (unsigned int i = 0; i < num_results; i++)
73 : {
74 0 : struct TALER_AUDITORDB_DepositConfirmation dc = { 0 };
75 0 : struct TALER_CoinSpendPublicKeyP *coin_pubs = NULL;
76 0 : struct TALER_CoinSpendSignatureP *coin_sigs = NULL;
77 0 : size_t num_pubs = 0;
78 0 : size_t num_sigs = 0;
79 0 : struct GNUNET_PQ_ResultSpec rs[] = {
80 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
81 : &dc.row_id),
82 0 : GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
83 : &dc.h_contract_terms),
84 0 : GNUNET_PQ_result_spec_auto_from_type ("h_policy",
85 : &dc.h_policy),
86 0 : GNUNET_PQ_result_spec_auto_from_type ("h_wire",
87 : &dc.h_wire),
88 0 : GNUNET_PQ_result_spec_timestamp ("exchange_timestamp",
89 : &dc.exchange_timestamp),
90 0 : GNUNET_PQ_result_spec_timestamp ("refund_deadline",
91 : &dc.refund_deadline),
92 0 : GNUNET_PQ_result_spec_timestamp ("wire_deadline",
93 : &dc.wire_deadline),
94 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("total_without_fee",
95 : &dc.total_without_fee),
96 0 : GNUNET_PQ_result_spec_auto_array_from_type (pg->conn,
97 : "coin_pubs",
98 : &num_pubs,
99 : coin_pubs),
100 0 : GNUNET_PQ_result_spec_auto_array_from_type (pg->conn,
101 : "coin_sigs",
102 : &num_sigs,
103 : coin_sigs),
104 0 : GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
105 : &dc.merchant),
106 0 : GNUNET_PQ_result_spec_auto_from_type ("exchange_sig",
107 : &dc.exchange_sig),
108 0 : GNUNET_PQ_result_spec_auto_from_type ("exchange_pub",
109 : &dc.exchange_pub),
110 0 : GNUNET_PQ_result_spec_auto_from_type ("master_sig",
111 : &dc.master_sig),
112 0 : GNUNET_PQ_result_spec_bool ("suppressed",
113 : &dc.suppressed),
114 : GNUNET_PQ_result_spec_end
115 : };
116 : enum GNUNET_GenericReturnValue rval;
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 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
125 0 : return;
126 : }
127 0 : if (num_sigs != num_pubs)
128 : {
129 0 : GNUNET_break (0);
130 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
131 0 : GNUNET_PQ_cleanup_result (rs);
132 0 : return;
133 : }
134 0 : dcc->qs = i + 1;
135 0 : dc.coin_pubs = coin_pubs;
136 0 : dc.coin_sigs = coin_sigs;
137 0 : dc.num_coins = num_sigs;
138 0 : rval = dcc->cb (dcc->cb_cls,
139 : &dc);
140 0 : GNUNET_PQ_cleanup_result (rs);
141 0 : if (GNUNET_OK != rval)
142 0 : break;
143 : }
144 : }
145 :
146 :
147 : enum GNUNET_DB_QueryStatus
148 4 : TALER_AUDITORDB_get_deposit_confirmations (
149 : struct TALER_AUDITORDB_PostgresContext *pg,
150 : int64_t limit,
151 : uint64_t offset,
152 : bool return_suppressed,
153 : TALER_AUDITORDB_DepositConfirmationCallback cb,
154 : void *cb_cls)
155 : {
156 4 : uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit);
157 4 : struct GNUNET_PQ_QueryParam params[] = {
158 4 : GNUNET_PQ_query_param_uint64 (&offset),
159 4 : GNUNET_PQ_query_param_bool (return_suppressed),
160 4 : GNUNET_PQ_query_param_uint64 (&plimit),
161 : GNUNET_PQ_query_param_end
162 : };
163 4 : struct DepositConfirmationContext dcc = {
164 : .cb = cb,
165 : .cb_cls = cb_cls,
166 : .pg = pg
167 : };
168 : enum GNUNET_DB_QueryStatus qs;
169 :
170 4 : PREPARE (pg,
171 : "auditor_deposit_confirmation_select_desc",
172 : "SELECT"
173 : " row_id"
174 : ",h_contract_terms"
175 : ",h_policy"
176 : ",h_wire"
177 : ",exchange_timestamp"
178 : ",wire_deadline"
179 : ",refund_deadline"
180 : ",total_without_fee"
181 : ",coin_pubs"
182 : ",coin_sigs"
183 : ",merchant_pub"
184 : ",exchange_sig"
185 : ",exchange_pub"
186 : ",master_sig"
187 : ",suppressed"
188 : " FROM auditor_deposit_confirmations"
189 : " WHERE (row_id < $1)"
190 : " AND ($2 OR NOT suppressed)"
191 : " ORDER BY row_id DESC"
192 : " LIMIT $3"
193 : );
194 4 : PREPARE (pg,
195 : "auditor_deposit_confirmation_select_asc",
196 : "SELECT"
197 : " row_id"
198 : ",h_contract_terms"
199 : ",h_policy"
200 : ",h_wire"
201 : ",exchange_timestamp"
202 : ",wire_deadline"
203 : ",refund_deadline"
204 : ",total_without_fee"
205 : ",coin_pubs"
206 : ",coin_sigs"
207 : ",merchant_pub"
208 : ",exchange_sig"
209 : ",exchange_pub"
210 : ",master_sig"
211 : ",suppressed"
212 : " FROM auditor_deposit_confirmations"
213 : " WHERE (row_id > $1)"
214 : " AND ($2 OR NOT suppressed)"
215 : " ORDER BY row_id ASC"
216 : " LIMIT $3"
217 : );
218 4 : qs = GNUNET_PQ_eval_prepared_multi_select (
219 : pg->conn,
220 : (limit > 0)
221 : ? "auditor_deposit_confirmation_select_asc"
222 : : "auditor_deposit_confirmation_select_desc",
223 : params,
224 : &deposit_confirmation_cb,
225 : &dcc);
226 4 : if (qs > 0)
227 0 : return dcc.qs;
228 4 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
229 4 : return qs;
230 : }
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