Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022-2024 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 backenddb/pg_lookup_transfers.c
18 : * @brief Implementation of the lookup_transfers function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "platform.h"
22 : #include <taler/taler_error_codes.h>
23 : #include <taler/taler_dbevents.h>
24 : #include <taler/taler_pq_lib.h>
25 : #include "pg_lookup_transfers.h"
26 : #include "pg_helper.h"
27 :
28 :
29 : /**
30 : * Closure for #lookup_transfers_cb().
31 : */
32 : struct LookupTransfersContext
33 : {
34 : /**
35 : * Function to call on results.
36 : */
37 : TALER_MERCHANTDB_TransferCallback cb;
38 :
39 : /**
40 : * Closure for @e cb.
41 : */
42 : void *cb_cls;
43 :
44 : /**
45 : * Postgres context.
46 : */
47 : struct PostgresClosure *pg;
48 :
49 : /**
50 : * Transaction status (set).
51 : */
52 : enum GNUNET_DB_QueryStatus qs;
53 :
54 : };
55 :
56 :
57 : /**
58 : * Function to be called with the results of a SELECT statement
59 : * that has returned @a num_results results.
60 : *
61 : * @param cls of type `struct LookupTransfersContext *`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 12 : lookup_transfers_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 12 : struct LookupTransfersContext *ltc = cls;
71 :
72 29 : for (unsigned int i = 0; i<num_results; i++)
73 : {
74 : struct TALER_Amount credit_amount;
75 : struct TALER_WireTransferIdentifierRawP wtid;
76 : struct TALER_FullPayto payto_uri;
77 : char *exchange_url;
78 : uint64_t transfer_serial_id;
79 : struct GNUNET_TIME_Absolute execution_time;
80 : bool expected;
81 17 : struct GNUNET_PQ_ResultSpec rs[] = {
82 17 : TALER_PQ_result_spec_amount_with_currency ("credit_amount",
83 : &credit_amount),
84 17 : GNUNET_PQ_result_spec_auto_from_type ("wtid",
85 : &wtid),
86 17 : GNUNET_PQ_result_spec_string ("payto_uri",
87 : &payto_uri.full_payto),
88 17 : GNUNET_PQ_result_spec_string ("exchange_url",
89 : &exchange_url),
90 17 : GNUNET_PQ_result_spec_uint64 ("credit_serial",
91 : &transfer_serial_id),
92 17 : GNUNET_PQ_result_spec_absolute_time ("execution_time",
93 : &execution_time),
94 17 : GNUNET_PQ_result_spec_bool ("expected",
95 : &expected),
96 : GNUNET_PQ_result_spec_end
97 : };
98 :
99 17 : if (GNUNET_OK !=
100 17 : GNUNET_PQ_extract_result (result,
101 : rs,
102 : i))
103 : {
104 0 : GNUNET_break (0);
105 0 : ltc->qs = GNUNET_DB_STATUS_HARD_ERROR;
106 0 : return;
107 : }
108 17 : ltc->cb (ltc->cb_cls,
109 : &credit_amount,
110 : &wtid,
111 : payto_uri,
112 : exchange_url,
113 : transfer_serial_id,
114 : execution_time,
115 : expected);
116 17 : GNUNET_PQ_cleanup_result (rs);
117 : }
118 12 : ltc->qs = num_results;
119 : }
120 :
121 :
122 : enum GNUNET_DB_QueryStatus
123 12 : TMH_PG_lookup_transfers (void *cls,
124 : const char *instance_id,
125 : struct TALER_FullPayto payto_uri,
126 : struct GNUNET_TIME_Timestamp before,
127 : struct GNUNET_TIME_Timestamp after,
128 : int64_t limit,
129 : uint64_t offset,
130 : enum TALER_EXCHANGE_YesNoAll expected,
131 : TALER_MERCHANTDB_TransferCallback cb,
132 : void *cb_cls)
133 : {
134 12 : struct PostgresClosure *pg = cls;
135 12 : uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit);
136 24 : bool by_time = ( (! GNUNET_TIME_absolute_is_never (before.abs_time)) ||
137 12 : (! GNUNET_TIME_absolute_is_zero (after.abs_time)) );
138 12 : struct LookupTransfersContext ltc = {
139 : .cb = cb,
140 : .cb_cls = cb_cls,
141 : .pg = pg
142 : };
143 12 : struct GNUNET_PQ_QueryParam params[] = {
144 12 : GNUNET_PQ_query_param_string (instance_id),
145 12 : GNUNET_PQ_query_param_timestamp (&before),
146 12 : GNUNET_PQ_query_param_timestamp (&after),
147 12 : GNUNET_PQ_query_param_uint64 (&offset),
148 12 : GNUNET_PQ_query_param_uint64 (&plimit),
149 12 : NULL == payto_uri.full_payto
150 8 : ? GNUNET_PQ_query_param_null () /* NULL: do not filter by payto URI */
151 12 : : GNUNET_PQ_query_param_string (payto_uri.full_payto),
152 12 : GNUNET_PQ_query_param_bool (! by_time), /* $7: filter by time? */
153 12 : GNUNET_PQ_query_param_bool (TALER_EXCHANGE_YNA_ALL == expected), /* filter by expected? */
154 12 : GNUNET_PQ_query_param_bool (TALER_EXCHANGE_YNA_YES == expected),
155 :
156 : GNUNET_PQ_query_param_end
157 : };
158 : enum GNUNET_DB_QueryStatus qs;
159 :
160 12 : check_connection (pg);
161 12 : PREPARE (pg,
162 : "lookup_transfers_asc",
163 : "SELECT"
164 : " mt.credit_amount"
165 : ",mt.wtid"
166 : ",mac.payto_uri"
167 : ",mt.exchange_url"
168 : ",mt.credit_serial"
169 : ",mt.execution_time"
170 : ",mt.expected"
171 : " FROM merchant_transfers mt"
172 : " JOIN merchant_accounts mac"
173 : " USING (account_serial)"
174 : " WHERE ( $7 OR "
175 : " (mt.execution_time < $2 AND"
176 : " mt.execution_time >= $3) )"
177 : " AND ( (CAST($6 AS TEXT) IS NULL) OR "
178 : " (REGEXP_REPLACE(mac.payto_uri,'\\?.*','')"
179 : " =REGEXP_REPLACE($6,'\\?.*','')) )"
180 : " AND ( $8 OR "
181 : " (mt.expected = $9) )"
182 : " AND merchant_serial ="
183 : " (SELECT merchant_serial"
184 : " FROM merchant_instances"
185 : " WHERE merchant_id=$1)"
186 : " AND (mt.credit_serial > $4)"
187 : " ORDER BY mt.credit_serial ASC"
188 : " LIMIT $5");
189 12 : PREPARE (pg,
190 : "lookup_transfers_desc",
191 : "SELECT"
192 : " mt.credit_amount"
193 : ",mt.wtid"
194 : ",mac.payto_uri"
195 : ",mt.exchange_url"
196 : ",mt.credit_serial"
197 : ",mt.execution_time"
198 : ",mt.expected"
199 : " FROM merchant_transfers mt"
200 : " JOIN merchant_accounts mac"
201 : " USING (account_serial)"
202 : " WHERE ( $7 OR "
203 : " (mt.execution_time < $2 AND"
204 : " mt.execution_time >= $3) )"
205 : " AND ( (CAST($6 AS TEXT) IS NULL) OR "
206 : " (REGEXP_REPLACE(mac.payto_uri,'\\?.*','')"
207 : " =REGEXP_REPLACE($6,'\\?.*','')) )"
208 : " AND ( $8 OR "
209 : " (mt.expected = $9) )"
210 : " AND merchant_serial ="
211 : " (SELECT merchant_serial"
212 : " FROM merchant_instances"
213 : " WHERE merchant_id=$1)"
214 : " AND (mt.credit_serial < $4)"
215 : " ORDER BY mt.credit_serial DESC"
216 : " LIMIT $5");
217 12 : qs = GNUNET_PQ_eval_prepared_multi_select (
218 : pg->conn,
219 : (limit > 0)
220 : ? "lookup_transfers_asc"
221 : : "lookup_transfers_desc",
222 : params,
223 : &lookup_transfers_cb,
224 : <c);
225 12 : if (0 >= qs)
226 1 : return qs;
227 11 : return ltc.qs;
228 : }
|
