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 pg_get_deposit_confirmations.c
19 : * @brief Low-level (statement-level) Postgres database access for the exchange
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/platform.h"
23 : #include "taler/taler_error_codes.h"
24 : #include "taler/taler_dbevents.h"
25 : #include "taler/taler_pq_lib.h"
26 : #include "pg_get_deposit_confirmations.h"
27 : #include "pg_helper.h"
28 :
29 :
30 : /**
31 : * Closure for #deposit_confirmation_cb().
32 : */
33 : struct DepositConfirmationContext
34 : {
35 :
36 : /**
37 : * Function to call for each deposit confirmation.
38 : */
39 : TALER_AUDITORDB_DepositConfirmationCallback cb;
40 :
41 : /**
42 : * Closure for @e cb
43 : */
44 : void *cb_cls;
45 :
46 : /**
47 : * Plugin context.
48 : */
49 : struct PostgresClosure *pg;
50 :
51 : /**
52 : * Query status to return.
53 : */
54 : enum GNUNET_DB_QueryStatus qs;
55 : };
56 :
57 :
58 : /**
59 : * Helper function for #TAH_PG_get_deposit_confirmations().
60 : * To be called with the results of a SELECT statement
61 : * that has returned @a num_results results.
62 : *
63 : * @param cls closure of type `struct DepositConfirmationContext *`
64 : * @param result the postgres result
65 : * @param num_results the number of results in @a result
66 : */
67 : static void
68 77 : deposit_confirmation_cb (void *cls,
69 : PGresult *result,
70 : unsigned int num_results)
71 : {
72 77 : struct DepositConfirmationContext *dcc = cls;
73 77 : struct PostgresClosure *pg = dcc->pg;
74 :
75 173 : for (unsigned int i = 0; i < num_results; i++)
76 : {
77 96 : struct TALER_AUDITORDB_DepositConfirmation dc = { 0 };
78 96 : struct TALER_CoinSpendPublicKeyP *coin_pubs = NULL;
79 96 : struct TALER_CoinSpendSignatureP *coin_sigs = NULL;
80 96 : size_t num_pubs = 0;
81 96 : size_t num_sigs = 0;
82 96 : struct GNUNET_PQ_ResultSpec rs[] = {
83 96 : GNUNET_PQ_result_spec_uint64 ("row_id",
84 : &dc.row_id),
85 96 : GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
86 : &dc.h_contract_terms),
87 96 : GNUNET_PQ_result_spec_auto_from_type ("h_policy",
88 : &dc.h_policy),
89 96 : GNUNET_PQ_result_spec_auto_from_type ("h_wire",
90 : &dc.h_wire),
91 96 : GNUNET_PQ_result_spec_timestamp ("exchange_timestamp",
92 : &dc.exchange_timestamp),
93 96 : GNUNET_PQ_result_spec_timestamp ("refund_deadline",
94 : &dc.refund_deadline),
95 96 : GNUNET_PQ_result_spec_timestamp ("wire_deadline",
96 : &dc.wire_deadline),
97 96 : TALER_PQ_RESULT_SPEC_AMOUNT ("total_without_fee",
98 : &dc.total_without_fee),
99 96 : GNUNET_PQ_result_spec_auto_array_from_type (pg->conn,
100 : "coin_pubs",
101 : &num_pubs,
102 : coin_pubs),
103 96 : GNUNET_PQ_result_spec_auto_array_from_type (pg->conn,
104 : "coin_sigs",
105 : &num_sigs,
106 : coin_sigs),
107 96 : GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
108 : &dc.merchant),
109 96 : GNUNET_PQ_result_spec_auto_from_type ("exchange_sig",
110 : &dc.exchange_sig),
111 96 : GNUNET_PQ_result_spec_auto_from_type ("exchange_pub",
112 : &dc.exchange_pub),
113 96 : GNUNET_PQ_result_spec_auto_from_type ("master_sig",
114 : &dc.master_sig),
115 96 : GNUNET_PQ_result_spec_bool ("suppressed",
116 : &dc.suppressed),
117 : GNUNET_PQ_result_spec_end
118 : };
119 : enum GNUNET_GenericReturnValue rval;
120 :
121 96 : if (GNUNET_OK !=
122 96 : GNUNET_PQ_extract_result (result,
123 : rs,
124 : i))
125 : {
126 0 : GNUNET_break (0);
127 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
128 0 : return;
129 : }
130 96 : if (num_sigs != num_pubs)
131 : {
132 0 : GNUNET_break (0);
133 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
134 0 : GNUNET_PQ_cleanup_result (rs);
135 0 : return;
136 : }
137 96 : dcc->qs = i + 1;
138 96 : dc.coin_pubs = coin_pubs;
139 96 : dc.coin_sigs = coin_sigs;
140 96 : dc.num_coins = num_sigs;
141 96 : rval = dcc->cb (dcc->cb_cls,
142 : &dc);
143 96 : GNUNET_PQ_cleanup_result (rs);
144 96 : if (GNUNET_OK != rval)
145 0 : break;
146 : }
147 : }
148 :
149 :
150 : enum GNUNET_DB_QueryStatus
151 77 : TAH_PG_get_deposit_confirmations (
152 : void *cls,
153 : int64_t limit,
154 : uint64_t offset,
155 : bool return_suppressed,
156 : TALER_AUDITORDB_DepositConfirmationCallback cb,
157 : void *cb_cls)
158 : {
159 77 : struct PostgresClosure *pg = cls;
160 77 : uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit);
161 77 : struct GNUNET_PQ_QueryParam params[] = {
162 77 : GNUNET_PQ_query_param_uint64 (&offset),
163 77 : GNUNET_PQ_query_param_bool (return_suppressed),
164 77 : GNUNET_PQ_query_param_uint64 (&plimit),
165 : GNUNET_PQ_query_param_end
166 : };
167 77 : struct DepositConfirmationContext dcc = {
168 : .cb = cb,
169 : .cb_cls = cb_cls,
170 : .pg = pg
171 : };
172 : enum GNUNET_DB_QueryStatus qs;
173 :
174 77 : PREPARE (pg,
175 : "auditor_deposit_confirmation_select_desc",
176 : "SELECT"
177 : " row_id"
178 : ",h_contract_terms"
179 : ",h_policy"
180 : ",h_wire"
181 : ",exchange_timestamp"
182 : ",wire_deadline"
183 : ",refund_deadline"
184 : ",total_without_fee"
185 : ",coin_pubs"
186 : ",coin_sigs"
187 : ",merchant_pub"
188 : ",exchange_sig"
189 : ",exchange_pub"
190 : ",master_sig"
191 : ",suppressed"
192 : " FROM auditor_deposit_confirmations"
193 : " WHERE (row_id < $1)"
194 : " AND ($2 OR NOT suppressed)"
195 : " ORDER BY row_id DESC"
196 : " LIMIT $3"
197 : );
198 77 : PREPARE (pg,
199 : "auditor_deposit_confirmation_select_asc",
200 : "SELECT"
201 : " row_id"
202 : ",h_contract_terms"
203 : ",h_policy"
204 : ",h_wire"
205 : ",exchange_timestamp"
206 : ",wire_deadline"
207 : ",refund_deadline"
208 : ",total_without_fee"
209 : ",coin_pubs"
210 : ",coin_sigs"
211 : ",merchant_pub"
212 : ",exchange_sig"
213 : ",exchange_pub"
214 : ",master_sig"
215 : ",suppressed"
216 : " FROM auditor_deposit_confirmations"
217 : " WHERE (row_id > $1)"
218 : " AND ($2 OR NOT suppressed)"
219 : " ORDER BY row_id ASC"
220 : " LIMIT $3"
221 : );
222 77 : qs = GNUNET_PQ_eval_prepared_multi_select (
223 : pg->conn,
224 : (limit > 0)
225 : ? "auditor_deposit_confirmation_select_asc"
226 : : "auditor_deposit_confirmation_select_desc",
227 : params,
228 : &deposit_confirmation_cb,
229 : &dcc);
230 77 : if (qs > 0)
231 36 : return dcc.qs;
232 41 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
233 41 : return qs;
234 : }
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