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/get_purses.h"
19 :
20 :
21 : struct PursesContext
22 : {
23 :
24 : /**
25 : * Function to call for each bad sig loss.
26 : */
27 : TALER_AUDITORDB_PursesCallback cb;
28 :
29 : /**
30 : * Closure for @e cb
31 : */
32 : void *cb_cls;
33 :
34 : /**
35 : * Plugin context.
36 : */
37 : struct TALER_AUDITORDB_PostgresContext *pg;
38 :
39 : /**
40 : * Query status to return.
41 : */
42 : enum GNUNET_DB_QueryStatus qs;
43 : };
44 :
45 :
46 : /**
47 : * Helper function for #TALER_AUDITORDB_get_purses().
48 : * To be called with the results of a SELECT statement
49 : * that has returned @a num_results results.
50 : *
51 : * @param cls closure of type `struct PursesContext *`
52 : * @param result the postgres result
53 : * @param num_results the number of results in @a result
54 : */
55 : static void
56 0 : purses_cb (void *cls,
57 : PGresult *result,
58 : unsigned int num_results)
59 : {
60 0 : struct PursesContext *dcc = cls;
61 0 : struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg;
62 :
63 0 : for (unsigned int i = 0; i < num_results; i++)
64 : {
65 : struct TALER_AUDITORDB_Purses dc;
66 0 : struct GNUNET_PQ_ResultSpec rs[] = {
67 0 : GNUNET_PQ_result_spec_uint64 ("auditor_purses_rowid",
68 : &dc.auditor_purses_rowid),
69 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
70 : &dc.purse_pub),
71 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("balance",
72 : &dc.balance),
73 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("target",
74 : &dc.target),
75 0 : GNUNET_PQ_result_spec_absolute_time ("expiration_date",
76 : &dc.expiration_date),
77 : GNUNET_PQ_result_spec_end
78 : };
79 : enum GNUNET_GenericReturnValue rval;
80 :
81 0 : if (GNUNET_OK !=
82 0 : GNUNET_PQ_extract_result (result,
83 : rs,
84 : i))
85 : {
86 0 : GNUNET_break (0);
87 0 : dcc->qs = GNUNET_DB_STATUS_HARD_ERROR;
88 0 : return;
89 : }
90 0 : dcc->qs = i + 1;
91 0 : rval = dcc->cb (dcc->cb_cls,
92 : dc.auditor_purses_rowid,
93 : &dc);
94 0 : GNUNET_PQ_cleanup_result (rs);
95 0 : if (GNUNET_OK != rval)
96 0 : break;
97 : }
98 : }
99 :
100 :
101 : enum GNUNET_DB_QueryStatus
102 0 : TALER_AUDITORDB_get_purses (struct TALER_AUDITORDB_PostgresContext *pg,
103 : int64_t limit,
104 : uint64_t offset,
105 : TALER_AUDITORDB_PursesCallback cb,
106 : void *cb_cls)
107 : {
108 0 : uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit);
109 0 : struct GNUNET_PQ_QueryParam params[] = {
110 0 : GNUNET_PQ_query_param_uint64 (&offset),
111 0 : GNUNET_PQ_query_param_uint64 (&plimit),
112 : GNUNET_PQ_query_param_end
113 : };
114 0 : struct PursesContext dcc = {
115 : .cb = cb,
116 : .cb_cls = cb_cls,
117 : .pg = pg
118 : };
119 : enum GNUNET_DB_QueryStatus qs;
120 :
121 0 : PREPARE (pg,
122 : "auditor_purses_get_desc",
123 : "SELECT"
124 : " auditor_purses_rowid,"
125 : " purse_pub,"
126 : " balance,"
127 : " target,"
128 : " expiration_date"
129 : " FROM auditor_purses"
130 : " WHERE (auditor_purses_rowid < $1)"
131 : " ORDER BY auditor_purses_rowid DESC"
132 : " LIMIT $2"
133 : );
134 0 : PREPARE (pg,
135 : "auditor_purses_get_asc",
136 : "SELECT"
137 : " auditor_purses_rowid,"
138 : " purse_pub,"
139 : " balance,"
140 : " target,"
141 : " expiration_date"
142 : " FROM auditor_purses"
143 : " WHERE (auditor_purses_rowid > $1)"
144 : " ORDER BY auditor_purses_rowid ASC"
145 : " LIMIT $2"
146 : );
147 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
148 : pg->conn,
149 : (limit > 0)
150 : ? "auditor_purses_get_asc"
151 : : "auditor_purses_get_desc",
152 : params,
153 : &purses_cb,
154 : &dcc);
155 :
156 0 : if (qs > 0)
157 0 : return dcc.qs;
158 0 : GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs);
159 0 : return qs;
160 : }
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