Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 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 : #include "taler/taler_error_codes.h"
17 : #include "taler/taler_pq_lib.h"
18 : #include "pg_helper.h"
19 : #include "auditor-database/iterate_bad_sig_losses.h"
20 :
21 :
22 : /**
23 : * Hard upper bound on the number of records returned by a single
24 : * call, regardless of the limit requested by the client.
25 : */
26 : #define MAX_RECORDS 50000
27 :
28 :
29 : struct BadSigLossesContext
30 : {
31 :
32 : /**
33 : * Function to call for each bad sig loss.
34 : */
35 : TALER_AUDITORDB_BadSigLossesCallback cb;
36 :
37 : /**
38 : * Closure for @e cb
39 : */
40 : void *cb_cls;
41 :
42 : /**
43 : * Plugin context.
44 : */
45 : struct TALER_AUDITORDB_PostgresContext *pg;
46 :
47 : /**
48 : * Query status to return.
49 : */
50 : enum GNUNET_DB_QueryStatus qs;
51 : };
52 :
53 :
54 : /**
55 : * Helper function for #TALER_AUDITORDB_iterate_bad_sig_losses().
56 : * To be called with the results of a SELECT statement
57 : * that has returned @a num_results results.
58 : *
59 : * @param cls closure of type `struct BadSigLossesContext *`
60 : * @param result the postgres result
61 : * @param num_results the number of results in @a result
62 : */
63 : static void
64 0 : bad_sig_losses_cb (void *cls,
65 : PGresult *result,
66 : unsigned int num_results)
67 : {
68 0 : struct BadSigLossesContext *dcc = cls;
69 0 : struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg;
70 :
71 0 : for (unsigned int i = 0; i < num_results; i++)
72 : {
73 : struct TALER_AUDITORDB_BadSigLosses dc;
74 0 : struct GNUNET_PQ_ResultSpec rs[] = {
75 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
76 : &dc.row_id),
77 0 : GNUNET_PQ_result_spec_uint64 ("problem_row_id",
78 : &dc.problem_row_id),
79 0 : GNUNET_PQ_result_spec_string ("operation",
80 : &dc.operation),
81 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("loss",
82 : &dc.loss),
83 0 : GNUNET_PQ_result_spec_auto_from_type ("operation_specific_pub",
84 : &dc.operation_specific_pub),
85 0 : GNUNET_PQ_result_spec_bool ("suppressed",
86 : &dc.suppressed),
87 : GNUNET_PQ_result_spec_end
88 : };
89 : enum GNUNET_GenericReturnValue rval;
90 :
91 0 : if (GNUNET_OK !=
92 0 : GNUNET_PQ_extract_result (result,
93 : rs,
94 : i))
95 : {
96 0 : GNUNET_break (0);
97 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
98 0 : return;
99 : }
100 0 : dcc->qs = i + 1;
101 0 : rval = dcc->cb (dcc->cb_cls,
102 : &dc);
103 0 : GNUNET_PQ_cleanup_result (rs);
104 0 : if (GNUNET_OK != rval)
105 0 : break;
106 : }
107 : }
108 :
109 :
110 : enum GNUNET_DB_QueryStatus
111 0 : TALER_AUDITORDB_iterate_bad_sig_losses (
112 : struct TALER_AUDITORDB_PostgresContext *pg,
113 : int64_t limit,
114 : uint64_t offset,
115 : bool return_suppressed,
116 : const struct GNUNET_CRYPTO_EddsaPublicKey *op_spec_pub,
117 : const char *op,
118 : TALER_AUDITORDB_BadSigLossesCallback cb,
119 : void *cb_cls)
120 : {
121 0 : uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS,
122 : TALER_AUDITORDB_abs_limit (limit));
123 0 : struct GNUNET_PQ_QueryParam params[] = {
124 0 : GNUNET_PQ_query_param_uint64 (&offset),
125 0 : GNUNET_PQ_query_param_bool (return_suppressed),
126 0 : GNUNET_PQ_query_param_uint64 (&plimit),
127 : NULL == op_spec_pub
128 0 : ? GNUNET_PQ_query_param_null ()
129 0 : : GNUNET_PQ_query_param_auto_from_type (op_spec_pub),
130 : NULL == op
131 0 : ? GNUNET_PQ_query_param_null ()
132 0 : : GNUNET_PQ_query_param_string (op),
133 : GNUNET_PQ_query_param_end
134 : };
135 0 : struct BadSigLossesContext dcc = {
136 : .cb = cb,
137 : .cb_cls = cb_cls,
138 : .pg = pg
139 : };
140 : enum GNUNET_DB_QueryStatus qs;
141 :
142 0 : PREPARE (pg,
143 : "iterate_bad_sig_losses_desc",
144 : "SELECT"
145 : " row_id"
146 : ",problem_row_id"
147 : ",operation"
148 : ",loss"
149 : ",operation_specific_pub"
150 : ",suppressed"
151 : " FROM auditor_bad_sig_losses"
152 : " WHERE (row_id < $1)"
153 : " AND ($2 OR NOT suppressed)"
154 : " AND ($4::BYTEA IS NULL OR operation_specific_pub = $4)"
155 : " AND ($5::TEXT IS NULL OR operation = $5)"
156 : " ORDER BY row_id DESC"
157 : " LIMIT $3"
158 : );
159 0 : PREPARE (pg,
160 : "iterate_bad_sig_losses_asc",
161 : "SELECT"
162 : " row_id"
163 : ",problem_row_id"
164 : ",operation"
165 : ",loss"
166 : ",operation_specific_pub"
167 : ",suppressed"
168 : " FROM auditor_bad_sig_losses"
169 : " WHERE (row_id > $1)"
170 : " AND ($2 OR NOT suppressed)"
171 : " AND ($4::BYTEA IS NULL OR operation_specific_pub = $4)"
172 : " AND ($5::TEXT IS NULL OR operation = $5)"
173 : " ORDER BY row_id ASC"
174 : " LIMIT $3"
175 : );
176 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
177 : pg->conn,
178 : (limit > 0)
179 : ? "iterate_bad_sig_losses_asc"
180 : : "iterate_bad_sig_losses_desc",
181 : params,
182 : &bad_sig_losses_cb,
183 : &dcc);
184 0 : if (qs > 0)
185 0 : return dcc.qs;
186 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
187 0 : return qs;
188 : }
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