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
|
/*
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 backenddb/pg_lookup_deposits.c
* @brief Implementation of the lookup_deposits function for Postgres
* @author Iván Ávalos
*/
#include "platform.h"
#include <taler/taler_error_codes.h>
#include <taler/taler_dbevents.h>
#include <taler/taler_pq_lib.h>
#include "pg_lookup_deposits.h"
#include "pg_helper.h"
/**
* Closure for #lookup_deposits_cb().
*/
struct LookupDepositsContext
{
/**
* Function to call with results.
*/
TALER_MERCHANTDB_DepositsCallback cb;
/**
* Closure for @e cls.
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
/**
* Transaction status (set).
*/
enum GNUNET_DB_QueryStatus qs;
};
/**
* Function to be called with the results of a SELECT statement
* that has returned @a num_results results.
*
* @param[in,out] cls of type `struct LookupDepositsContext *`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
lookup_deposits_cb (void *cls,
PGresult *result,
unsigned int num_results)
{
struct LookupDepositsContext *ldc = cls;
for (unsigned int i = 0; i<num_results; i++)
{
struct TALER_CoinSpendPublicKeyP coin_pub;
struct TALER_Amount amount_with_fee;
struct TALER_Amount deposit_fee;
struct TALER_Amount refund_fee;
char *exchange_url;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_string ("exchange_url",
&exchange_url),
GNUNET_PQ_result_spec_auto_from_type ("coin_pub",
&coin_pub),
TALER_PQ_result_spec_amount_with_currency ("amount_with_fee",
&amount_with_fee),
TALER_PQ_result_spec_amount_with_currency ("deposit_fee",
&deposit_fee),
TALER_PQ_result_spec_amount_with_currency ("refund_fee",
&refund_fee),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
ldc->qs = GNUNET_DB_STATUS_HARD_ERROR;
return;
}
ldc->cb (ldc->cb_cls,
exchange_url,
&coin_pub,
&amount_with_fee,
&deposit_fee,
&refund_fee);
GNUNET_PQ_cleanup_result (rs);
}
ldc->qs = num_results;
}
enum GNUNET_DB_QueryStatus
TMH_PG_lookup_deposits (
void *cls,
const char *instance_id,
const struct TALER_PrivateContractHashP *h_contract_terms,
TALER_MERCHANTDB_DepositsCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_string (instance_id),
GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
GNUNET_PQ_query_param_end
};
struct LookupDepositsContext ldc = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg
};
enum GNUNET_DB_QueryStatus qs;
/* no preflight check here, run in its own transaction by the caller! */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Finding deposits for h_contract_terms '%s'\n",
GNUNET_h2s (&h_contract_terms->hash));
check_connection (pg);
PREPARE (pg,
"lookup_deposits",
"SELECT"
" dcom.exchange_url"
",dep.coin_pub"
",dep.amount_with_fee"
",dep.deposit_fee"
",dep.refund_fee"
" FROM merchant_deposits dep"
" JOIN merchant_deposit_confirmations dcom"
" USING (deposit_confirmation_serial)"
" WHERE dcom.order_serial="
" (SELECT order_serial"
" FROM merchant_contract_terms"
" WHERE h_contract_terms=$2"
" AND merchant_serial="
" (SELECT merchant_serial"
" FROM merchant_instances"
" WHERE merchant_id=$1))");
qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
"lookup_deposits",
params,
&lookup_deposits_cb,
&ldc);
if (qs <= 0)
return qs;
return ldc.qs;
}
|
