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_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/taler_pq_lib.h"
23 : #include "exchange-database/select_withdrawals_above_serial_id.h"
24 : #include "helper.h"
25 :
26 : /**
27 : * Closure for #withdraw_serial_helper_cb().
28 : */
29 : struct WithdrawSerialContext
30 : {
31 :
32 : /**
33 : * Callback to call.
34 : */
35 : TALER_EXCHANGEDB_WithdrawCallback 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 WithdrawSerialContext`
59 : * @param result the postgres result
60 : * @param num_results the number of results in @a result
61 : */
62 : static void
63 8 : withdraw_serial_helper_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 8 : struct WithdrawSerialContext *rosc = cls;
68 8 : struct TALER_EXCHANGEDB_PostgresContext *pg = rosc->pg;
69 :
70 8 : for (unsigned int i = 0; i<num_results; i++)
71 : {
72 : uint64_t rowid;
73 : struct TALER_HashBlindedPlanchetsP h_planchets;
74 : struct GNUNET_TIME_Timestamp execution_date;
75 : struct TALER_Amount amount_with_fee;
76 : struct TALER_ReservePublicKeyP reserve_pub;
77 : struct TALER_ReserveSignatureP reserve_sig;
78 : uint16_t max_age;
79 : bool no_max_age;
80 : uint16_t noreveal_index;
81 : bool no_noreveal_index;
82 : struct TALER_HashBlindedPlanchetsP selected_h;
83 : bool no_selected_h;
84 : struct TALER_BlindingMasterSeedP blinding_seed;
85 : bool no_blinding_seed;
86 : size_t num_denom_serials;
87 0 : uint64_t *denom_serials = NULL;
88 0 : struct GNUNET_PQ_ResultSpec rs[] = {
89 0 : GNUNET_PQ_result_spec_uint64 ("withdraw_id",
90 : &rowid),
91 0 : GNUNET_PQ_result_spec_auto_from_type ("planchets_h",
92 : &h_planchets),
93 0 : GNUNET_PQ_result_spec_timestamp ("execution_date",
94 : &execution_date),
95 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
96 : &amount_with_fee),
97 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
98 : &reserve_pub),
99 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_sig",
100 : &reserve_sig),
101 0 : GNUNET_PQ_result_spec_allow_null (
102 : GNUNET_PQ_result_spec_uint16 ("max_age",
103 : &max_age),
104 : &no_max_age),
105 0 : GNUNET_PQ_result_spec_allow_null (
106 : GNUNET_PQ_result_spec_uint16 ("noreveal_index",
107 : &noreveal_index),
108 : &no_noreveal_index),
109 0 : GNUNET_PQ_result_spec_allow_null (
110 : GNUNET_PQ_result_spec_auto_from_type (
111 : "selected_h",
112 : &selected_h),
113 : &no_selected_h),
114 0 : GNUNET_PQ_result_spec_allow_null (
115 : GNUNET_PQ_result_spec_auto_from_type (
116 : "blinding_seed",
117 : &blinding_seed),
118 : &no_blinding_seed),
119 0 : GNUNET_PQ_result_spec_array_uint64 (
120 : pg->conn,
121 : "denom_serials",
122 : &num_denom_serials,
123 : &denom_serials),
124 : GNUNET_PQ_result_spec_end
125 : };
126 : enum GNUNET_GenericReturnValue ret;
127 :
128 0 : if (GNUNET_OK !=
129 0 : GNUNET_PQ_extract_result (result,
130 : rs,
131 : i))
132 : {
133 0 : GNUNET_break (0);
134 0 : rosc->status = GNUNET_SYSERR;
135 0 : GNUNET_PQ_cleanup_result (rs);
136 0 : return;
137 : }
138 0 : if ((! no_max_age) &&
139 0 : ((255 <= noreveal_index) || (255 <= max_age)))
140 : {
141 0 : GNUNET_break (0);
142 0 : rosc->status = GNUNET_SYSERR;
143 0 : GNUNET_PQ_cleanup_result (rs);
144 0 : return;
145 : }
146 0 : ret = rosc->cb (rosc->cb_cls,
147 : rowid,
148 : num_denom_serials,
149 : denom_serials,
150 : no_selected_h ? NULL : &selected_h,
151 : &h_planchets,
152 : no_blinding_seed ? NULL : &blinding_seed,
153 : ! no_max_age,
154 0 : (uint8_t) max_age,
155 0 : (uint8_t) noreveal_index,
156 : &reserve_pub,
157 : &reserve_sig,
158 : execution_date,
159 0 : &amount_with_fee);
160 0 : GNUNET_PQ_cleanup_result (rs);
161 0 : if (GNUNET_OK != ret)
162 0 : break;
163 : }
164 : }
165 :
166 :
167 : enum GNUNET_DB_QueryStatus
168 8 : TALER_EXCHANGEDB_select_withdrawals_above_serial_id (
169 : struct TALER_EXCHANGEDB_PostgresContext *pg,
170 : uint64_t serial_id,
171 : TALER_EXCHANGEDB_WithdrawCallback cb,
172 : void *cb_cls)
173 : {
174 8 : struct GNUNET_PQ_QueryParam params[] = {
175 8 : GNUNET_PQ_query_param_uint64 (&serial_id),
176 : GNUNET_PQ_query_param_end
177 : };
178 8 : struct WithdrawSerialContext rosc = {
179 : .cb = cb,
180 : .cb_cls = cb_cls,
181 : .pg = pg,
182 : .status = GNUNET_OK
183 : };
184 : enum GNUNET_DB_QueryStatus qs;
185 :
186 : /* Fetch deposits with rowid '\geq' the given parameter */
187 8 : PREPARE (pg,
188 : "audit_get_withdraw_incr",
189 : "SELECT"
190 : " withdraw_id"
191 : ",planchets_h"
192 : ",execution_date"
193 : ",amount_with_fee"
194 : ",reserve_pub"
195 : ",reserve_sig"
196 : ",max_age"
197 : ",noreveal_index"
198 : ",selected_h"
199 : ",blinding_seed"
200 : ",denom_serials"
201 : " FROM withdraw"
202 : " WHERE withdraw_id>=$1"
203 : " ORDER BY withdraw_id ASC;");
204 8 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
205 : "audit_get_withdraw_incr",
206 : params,
207 : &withdraw_serial_helper_cb,
208 : &rosc);
209 8 : if (GNUNET_OK != rosc.status)
210 0 : return GNUNET_DB_STATUS_HARD_ERROR;
211 8 : return qs;
212 : }
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