1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
This file is part of TALER
Copyright (C) 2022 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file exchangedb/pg_iterate_denomination_info.c
* @brief Implementation of the iterate_denomination_info function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_iterate_denomination_info.h"
#include "pg_helper.h"
/**
* Closure for #domination_cb_helper()
*/
struct DenomIteratorContext
{
/**
* Function to call with the results.
*/
TALER_EXCHANGEDB_DenominationCallback cb;
/**
* Closure to pass to @e cb
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
};
/**
* Helper function for #TEH_PG_iterate_denomination_info().
* Calls the callback with each denomination key.
*
* @param cls a `struct DenomIteratorContext`
* @param result db results
* @param num_results number of results in @a result
*/
static void
domination_cb_helper (void *cls,
PGresult *result,
unsigned int num_results)
{
struct DenomIteratorContext *dic = cls;
struct PostgresClosure *pg = dic->pg;
for (unsigned int i = 0; i<num_results; i++)
{
struct TALER_EXCHANGEDB_DenominationKeyInformation issue;
struct TALER_DenominationPublicKey denom_pub;
struct TALER_DenominationHashP denom_hash;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("master_sig",
&issue.signature),
GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
&denom_hash),
GNUNET_PQ_result_spec_timestamp ("valid_from",
&issue.start),
GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
&issue.expire_withdraw),
GNUNET_PQ_result_spec_timestamp ("expire_deposit",
&issue.expire_deposit),
GNUNET_PQ_result_spec_timestamp ("expire_legal",
&issue.expire_legal),
TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
&issue.value),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
&issue.fees.withdraw),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
&issue.fees.deposit),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
&issue.fees.refresh),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
&issue.fees.refund),
TALER_PQ_result_spec_denom_pub ("denom_pub",
&denom_pub),
GNUNET_PQ_result_spec_uint32 ("age_mask",
&issue.age_mask.bits),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
return;
}
/* Unfortunately we have to carry the age mask in both, the
* TALER_DenominationPublicKey and
* TALER_EXCHANGEDB_DenominationKeyInformation at different times.
* Here we use _both_ so let's make sure the values are the same. */
denom_pub.age_mask = issue.age_mask;
TALER_denom_pub_hash (&denom_pub,
&issue.denom_hash);
if (0 !=
GNUNET_memcmp (&issue.denom_hash,
&denom_hash))
{
GNUNET_break (0);
}
else
{
dic->cb (dic->cb_cls,
&denom_pub,
&issue);
}
TALER_denom_pub_free (&denom_pub);
}
}
/**
* Fetch information about all known denomination keys.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param cb function to call on each denomination key
* @param cb_cls closure for @a cb
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
TEH_PG_iterate_denomination_info (void *cls,
TALER_EXCHANGEDB_DenominationCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_end
};
struct DenomIteratorContext dic = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg
};
/* Used in #postgres_iterate_denomination_info() */
PREPARE (pg,
"denomination_iterate",
"SELECT"
" master_sig"
",denom_pub_hash"
",valid_from"
",expire_withdraw"
",expire_deposit"
",expire_legal"
",coin_val" /* value of this denom */
",coin_frac" /* fractional value of this denom */
",fee_withdraw_val"
",fee_withdraw_frac"
",fee_deposit_val"
",fee_deposit_frac"
",fee_refresh_val"
",fee_refresh_frac"
",fee_refund_val"
",fee_refund_frac"
",denom_pub"
",age_mask"
" FROM denominations;");
return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
"denomination_iterate",
params,
&domination_cb_helper,
&dic);
}
|
