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_pq_lib.h"
17 : #include "pg_helper.h"
18 : #include "auditor-database/iterate_wire_format_inconsistencies.h"
19 :
20 :
21 : /**
22 : * Hard upper bound on the number of records returned by a single
23 : * call, regardless of the limit requested by the client.
24 : */
25 : #define MAX_RECORDS 50000
26 :
27 :
28 : struct WireFormatInconsistencyContext
29 : {
30 :
31 : /**
32 : * Function to call for each bad sig loss.
33 : */
34 : TALER_AUDITORDB_WireFormatInconsistencyCallback cb;
35 :
36 : /**
37 : * Closure for @e cb
38 : */
39 : void *cb_cls;
40 :
41 : /**
42 : * Plugin context.
43 : */
44 : struct TALER_AUDITORDB_PostgresContext *pg;
45 :
46 : /**
47 : * Query status to return.
48 : */
49 : enum GNUNET_DB_QueryStatus qs;
50 : };
51 :
52 :
53 : /**
54 : * Helper function for #TALER_AUDITORDB_iterate_wire_format_inconsistencies().
55 : * 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 WireFormatInconsistencyContext *`
59 : * @param result the postgres result
60 : * @param num_results the number of results in @a result
61 : */
62 : static void
63 0 : wire_format_inconsistency_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 0 : struct WireFormatInconsistencyContext *dcc = cls;
68 0 : struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg;
69 :
70 0 : for (unsigned int i = 0; i < num_results; i++)
71 : {
72 : struct TALER_AUDITORDB_WireFormatInconsistency dc;
73 0 : struct GNUNET_PQ_ResultSpec rs[] = {
74 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
75 : &dc.row_id),
76 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
77 : &dc.amount),
78 0 : GNUNET_PQ_result_spec_uint64 ("wire_offset",
79 : &dc.wire_offset),
80 0 : GNUNET_PQ_result_spec_string ("diagnostic",
81 : &dc.diagnostic),
82 0 : GNUNET_PQ_result_spec_bool ("suppressed",
83 : &dc.suppressed),
84 : GNUNET_PQ_result_spec_end
85 : };
86 : enum GNUNET_GenericReturnValue rval;
87 :
88 0 : if (GNUNET_OK !=
89 0 : GNUNET_PQ_extract_result (result,
90 : rs,
91 : i))
92 : {
93 0 : GNUNET_break (0);
94 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
95 0 : return;
96 : }
97 0 : dcc->qs = i + 1;
98 0 : rval = dcc->cb (dcc->cb_cls,
99 : &dc);
100 0 : GNUNET_PQ_cleanup_result (rs);
101 0 : if (GNUNET_OK != rval)
102 0 : break;
103 : }
104 : }
105 :
106 :
107 : enum GNUNET_DB_QueryStatus
108 0 : TALER_AUDITORDB_iterate_wire_format_inconsistencies (struct
109 : TALER_AUDITORDB_PostgresContext
110 : *
111 : pg,
112 : int64_t limit,
113 : uint64_t offset,
114 : bool return_suppressed,
115 : TALER_AUDITORDB_WireFormatInconsistencyCallback
116 : cb,
117 : void *cb_cls)
118 : {
119 0 : uint64_t plimit = GNUNET_MIN ((uint64_t) MAX_RECORDS,
120 : TALER_AUDITORDB_abs_limit (limit));
121 0 : struct GNUNET_PQ_QueryParam params[] = {
122 0 : GNUNET_PQ_query_param_uint64 (&offset),
123 0 : GNUNET_PQ_query_param_bool (return_suppressed),
124 0 : GNUNET_PQ_query_param_uint64 (&plimit),
125 : GNUNET_PQ_query_param_end
126 : };
127 0 : struct WireFormatInconsistencyContext dcc = {
128 : .cb = cb,
129 : .cb_cls = cb_cls,
130 : .pg = pg
131 : };
132 : enum GNUNET_DB_QueryStatus qs;
133 :
134 0 : PREPARE (pg,
135 : "iterate_wire_format_inconsistencies_inconsistency_get_desc",
136 : "SELECT"
137 : " row_id,"
138 : " amount,"
139 : " wire_offset,"
140 : " diagnostic,"
141 : " suppressed"
142 : " FROM auditor_wire_format_inconsistency"
143 : " WHERE (row_id < $1)"
144 : " AND ($2 OR NOT suppressed)"
145 : " ORDER BY row_id DESC"
146 : " LIMIT $3"
147 : );
148 0 : PREPARE (pg,
149 : "iterate_wire_format_inconsistencies_inconsistency_get_asc",
150 : "SELECT"
151 : " row_id,"
152 : " amount,"
153 : " wire_offset,"
154 : " diagnostic,"
155 : " suppressed"
156 : " FROM auditor_wire_format_inconsistency"
157 : " WHERE (row_id > $1)"
158 : " AND ($2 OR NOT suppressed)"
159 : " ORDER BY row_id ASC"
160 : " LIMIT $3"
161 : );
162 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
163 : pg->conn,
164 : (limit > 0)
165 : ? "iterate_wire_format_inconsistencies_inconsistency_get_asc"
166 : : "iterate_wire_format_inconsistencies_inconsistency_get_desc",
167 : params,
168 : &wire_format_inconsistency_cb,
169 : &dcc);
170 0 : if (qs > 0)
171 0 : return dcc.qs;
172 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
173 0 : return qs;
174 : }
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