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/get_emergency.h"
20 :
21 : /**
22 : * Closure for #emergency_cb().
23 : */
24 : struct EmergencyContext
25 : {
26 :
27 : /**
28 : * Function to call for each deposit confirmation.
29 : */
30 : TALER_AUDITORDB_EmergencyCallback cb;
31 :
32 : /**
33 : * Closure for @e cb
34 : */
35 : void *cb_cls;
36 :
37 : /**
38 : * Plugin context.
39 : */
40 : struct TALER_AUDITORDB_PostgresContext *pg;
41 :
42 : /**
43 : * Query status to return.
44 : */
45 : enum GNUNET_DB_QueryStatus qs;
46 : };
47 :
48 :
49 : /**
50 : * Helper function for #TALER_AUDITORDB_get_emergency().
51 : * To be called with the results of a SELECT statement
52 : * that has returned @a num_results results.
53 : *
54 : * @param cls closure of type `struct Emergency *`
55 : * @param result the postgres result
56 : * @param num_results the number of results in @a result
57 : */
58 : static void
59 0 : emergency_cb (void *cls,
60 : PGresult *result,
61 : unsigned int num_results)
62 : {
63 0 : struct EmergencyContext *dcc = cls;
64 0 : struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg;
65 :
66 0 : for (unsigned int i = 0; i < num_results; i++)
67 : {
68 : struct TALER_AUDITORDB_Emergency dc;
69 0 : struct GNUNET_PQ_ResultSpec rs[] = {
70 0 : GNUNET_PQ_result_spec_uint64 ("row_id",
71 : &dc.row_id),
72 0 : GNUNET_PQ_result_spec_auto_from_type ("denompub_h",
73 : &dc.denompub_h),
74 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("denom_risk",
75 : &dc.denom_risk),
76 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("denom_loss",
77 : &dc.denom_loss),
78 0 : GNUNET_PQ_result_spec_absolute_time ("deposit_start",
79 : &dc.deposit_start),
80 0 : GNUNET_PQ_result_spec_absolute_time ("deposit_end",
81 : &dc.deposit_end),
82 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("value",
83 : &dc.value),
84 0 : GNUNET_PQ_result_spec_bool ("suppressed",
85 : &dc.suppressed),
86 : GNUNET_PQ_result_spec_end
87 : };
88 : enum GNUNET_GenericReturnValue rval;
89 :
90 0 : if (GNUNET_OK !=
91 0 : GNUNET_PQ_extract_result (result,
92 : rs,
93 : i))
94 : {
95 0 : GNUNET_break (0);
96 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
97 0 : return;
98 : }
99 0 : dcc->qs = i + 1;
100 0 : rval = dcc->cb (dcc->cb_cls,
101 : &dc);
102 0 : GNUNET_PQ_cleanup_result (rs);
103 0 : if (GNUNET_OK != rval)
104 0 : break;
105 : }
106 : }
107 :
108 :
109 : enum GNUNET_DB_QueryStatus
110 0 : TALER_AUDITORDB_get_emergency (struct TALER_AUDITORDB_PostgresContext *pg,
111 : int64_t limit,
112 : uint64_t offset,
113 : bool return_suppressed,
114 : TALER_AUDITORDB_EmergencyCallback cb,
115 : void *cb_cls)
116 : {
117 0 : uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit);
118 0 : struct GNUNET_PQ_QueryParam params[] = {
119 0 : GNUNET_PQ_query_param_uint64 (&offset),
120 0 : GNUNET_PQ_query_param_bool (return_suppressed),
121 0 : GNUNET_PQ_query_param_uint64 (&plimit),
122 : GNUNET_PQ_query_param_end
123 : };
124 0 : struct EmergencyContext dcc = {
125 : .cb = cb,
126 : .cb_cls = cb_cls,
127 : .pg = pg
128 : };
129 : enum GNUNET_DB_QueryStatus qs;
130 :
131 0 : PREPARE (pg,
132 : "auditor_emergency_get_desc",
133 : "SELECT"
134 : " row_id"
135 : ",denompub_h"
136 : ",denom_risk"
137 : ",denom_loss"
138 : ",deposit_start"
139 : ",deposit_end"
140 : ",value"
141 : ",suppressed"
142 : " FROM auditor_emergency"
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 : "auditor_emergency_get_asc",
150 : "SELECT"
151 : " row_id"
152 : ",denompub_h"
153 : ",denom_risk"
154 : ",denom_loss"
155 : ",deposit_start"
156 : ",deposit_end"
157 : ",value"
158 : ",suppressed"
159 : " FROM auditor_emergency"
160 : " WHERE (row_id > $1)"
161 : " AND ($2 OR NOT suppressed)"
162 : " ORDER BY row_id ASC"
163 : " LIMIT $3"
164 : );
165 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
166 : pg->conn,
167 : (limit > 0)
168 : ? "auditor_emergency_get_asc"
169 : : "auditor_emergency_get_desc",
170 : params,
171 : &emergency_cb,
172 : &dcc);
173 :
174 0 : if (qs > 0)
175 0 : return dcc.qs;
176 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
177 0 : return qs;
178 : }
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