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_withdrawals_above_serial_id.c
18 : * @brief Implementation of the select_withdrawals_above_serial_id function for Postgres
19 : * @author Christian Grothoff
20 : * @author Özgür Kesim
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_select_withdrawals_above_serial_id.h"
27 : #include "pg_helper.h"
28 :
29 : /**
30 : * Closure for #withdraw_serial_helper_cb().
31 : */
32 : struct WithdrawSerialContext
33 : {
34 :
35 : /**
36 : * Callback to call.
37 : */
38 : TALER_EXCHANGEDB_WithdrawCallback 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 WithdrawSerialContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 148 : withdraw_serial_helper_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 148 : struct WithdrawSerialContext *rosc = cls;
71 148 : struct PostgresClosure *pg = rosc->pg;
72 :
73 280 : for (unsigned int i = 0; i<num_results; i++)
74 : {
75 : uint64_t rowid;
76 : struct TALER_HashBlindedPlanchetsP h_planchets;
77 : struct GNUNET_TIME_Timestamp execution_date;
78 : struct TALER_Amount amount_with_fee;
79 : struct TALER_ReservePublicKeyP reserve_pub;
80 : struct TALER_ReserveSignatureP reserve_sig;
81 : uint16_t max_age;
82 : bool no_max_age;
83 : uint16_t noreveal_index;
84 : bool no_noreveal_index;
85 : struct TALER_HashBlindedPlanchetsP selected_h;
86 : bool no_selected_h;
87 : struct TALER_BlindingMasterSeedP blinding_seed;
88 : bool no_blinding_seed;
89 : size_t num_denom_serials;
90 132 : uint64_t *denom_serials = NULL;
91 132 : struct GNUNET_PQ_ResultSpec rs[] = {
92 132 : GNUNET_PQ_result_spec_uint64 ("withdraw_id",
93 : &rowid),
94 132 : GNUNET_PQ_result_spec_auto_from_type ("planchets_h",
95 : &h_planchets),
96 132 : GNUNET_PQ_result_spec_timestamp ("execution_date",
97 : &execution_date),
98 132 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
99 : &amount_with_fee),
100 132 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
101 : &reserve_pub),
102 132 : GNUNET_PQ_result_spec_auto_from_type ("reserve_sig",
103 : &reserve_sig),
104 132 : GNUNET_PQ_result_spec_allow_null (
105 : GNUNET_PQ_result_spec_uint16 ("max_age",
106 : &max_age),
107 : &no_max_age),
108 132 : GNUNET_PQ_result_spec_allow_null (
109 : GNUNET_PQ_result_spec_uint16 ("noreveal_index",
110 : &noreveal_index),
111 : &no_noreveal_index),
112 132 : GNUNET_PQ_result_spec_allow_null (
113 : GNUNET_PQ_result_spec_auto_from_type (
114 : "selected_h",
115 : &selected_h),
116 : &no_selected_h),
117 132 : GNUNET_PQ_result_spec_allow_null (
118 : GNUNET_PQ_result_spec_auto_from_type (
119 : "blinding_seed",
120 : &blinding_seed),
121 : &no_blinding_seed),
122 132 : GNUNET_PQ_result_spec_array_uint64 (
123 : pg->conn,
124 : "denom_serials",
125 : &num_denom_serials,
126 : &denom_serials),
127 : GNUNET_PQ_result_spec_end
128 : };
129 : enum GNUNET_GenericReturnValue ret;
130 :
131 132 : if (GNUNET_OK !=
132 132 : GNUNET_PQ_extract_result (result,
133 : rs,
134 : i))
135 : {
136 0 : GNUNET_break (0);
137 0 : rosc->status = GNUNET_SYSERR;
138 0 : GNUNET_PQ_cleanup_result (rs);
139 0 : return;
140 : }
141 132 : if ((! no_max_age) &&
142 0 : ((255 <= noreveal_index) || (255 <= max_age)))
143 : {
144 0 : GNUNET_break (0);
145 0 : rosc->status = GNUNET_SYSERR;
146 0 : GNUNET_PQ_cleanup_result (rs);
147 0 : return;
148 : }
149 132 : ret = rosc->cb (rosc->cb_cls,
150 : rowid,
151 : num_denom_serials,
152 : denom_serials,
153 : no_selected_h ? NULL : &selected_h,
154 : &h_planchets,
155 : no_blinding_seed ? NULL : &blinding_seed,
156 132 : ! no_max_age,
157 132 : (uint8_t) max_age,
158 132 : (uint8_t) noreveal_index,
159 : &reserve_pub,
160 : &reserve_sig,
161 : execution_date,
162 132 : &amount_with_fee);
163 132 : GNUNET_PQ_cleanup_result (rs);
164 132 : if (GNUNET_OK != ret)
165 0 : break;
166 : }
167 : }
168 :
169 :
170 : enum GNUNET_DB_QueryStatus
171 148 : TEH_PG_select_withdrawals_above_serial_id (
172 : void *cls,
173 : uint64_t serial_id,
174 : TALER_EXCHANGEDB_WithdrawCallback cb,
175 : void *cb_cls)
176 : {
177 148 : struct PostgresClosure *pg = cls;
178 148 : struct GNUNET_PQ_QueryParam params[] = {
179 148 : GNUNET_PQ_query_param_uint64 (&serial_id),
180 : GNUNET_PQ_query_param_end
181 : };
182 148 : struct WithdrawSerialContext rosc = {
183 : .cb = cb,
184 : .cb_cls = cb_cls,
185 : .pg = pg,
186 : .status = GNUNET_OK
187 : };
188 : enum GNUNET_DB_QueryStatus qs;
189 :
190 : /* Fetch deposits with rowid '\geq' the given parameter */
191 148 : PREPARE (pg,
192 : "audit_get_withdraw_incr",
193 : "SELECT"
194 : " withdraw_id"
195 : ",planchets_h"
196 : ",execution_date"
197 : ",amount_with_fee"
198 : ",reserve_pub"
199 : ",reserve_sig"
200 : ",max_age"
201 : ",noreveal_index"
202 : ",selected_h"
203 : ",blinding_seed"
204 : ",denom_serials"
205 : " FROM withdraw"
206 : " WHERE withdraw_id>=$1"
207 : " ORDER BY withdraw_id ASC;");
208 148 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
209 : "audit_get_withdraw_incr",
210 : params,
211 : &withdraw_serial_helper_cb,
212 : &rosc);
213 148 : if (GNUNET_OK != rosc.status)
214 0 : return GNUNET_DB_STATUS_HARD_ERROR;
215 148 : return qs;
216 : }
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