Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022 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 : /**
17 : * @file select_purse_merges_above_serial_id.c
18 : * @brief Implementation of the select_purse_merges_above_serial_id function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/taler_pq_lib.h"
22 : #include "exchange-database/select_purse_merges_above_serial_id.h"
23 : #include "helper.h"
24 :
25 :
26 : /**
27 : * Closure for #purse_deposit_serial_helper_cb().
28 : */
29 : struct PurseMergeSerialContext
30 : {
31 :
32 : /**
33 : * Callback to call.
34 : */
35 : TALER_EXCHANGEDB_PurseMergeCallback cb;
36 :
37 : /**
38 : * Closure for @e cb.
39 : */
40 : void *cb_cls;
41 :
42 : /**
43 : * Plugin context.
44 : */
45 : struct TALER_EXCHANGEDB_PostgresContext *pg;
46 :
47 : /**
48 : * Status code, set to #GNUNET_SYSERR on hard errors.
49 : */
50 : enum GNUNET_GenericReturnValue status;
51 : };
52 :
53 :
54 : /**
55 : * Helper function 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 PurseMergeSerialContext`
59 : * @param result the postgres result
60 : * @param num_results the number of results in @a result
61 : */
62 : static void
63 4 : purse_merges_serial_helper_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 4 : struct PurseMergeSerialContext *dsc = cls;
68 4 : struct TALER_EXCHANGEDB_PostgresContext *pg = dsc->pg;
69 :
70 4 : for (unsigned int i = 0; i<num_results; i++)
71 : {
72 : uint64_t rowid;
73 0 : char *partner_base_url = NULL;
74 : struct TALER_Amount amount;
75 : struct TALER_Amount balance;
76 : uint32_t flags32;
77 : enum TALER_WalletAccountMergeFlags flags;
78 : struct TALER_PurseMergePublicKeyP merge_pub;
79 : struct TALER_ReservePublicKeyP reserve_pub;
80 : struct TALER_PurseMergeSignatureP merge_sig;
81 : struct TALER_PurseContractPublicKeyP purse_pub;
82 : struct GNUNET_TIME_Timestamp merge_timestamp;
83 0 : struct GNUNET_PQ_ResultSpec rs[] = {
84 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
85 : &amount),
86 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("balance",
87 : &balance),
88 0 : GNUNET_PQ_result_spec_allow_null (
89 : GNUNET_PQ_result_spec_string ("partner_base_url",
90 : &partner_base_url),
91 : NULL),
92 0 : GNUNET_PQ_result_spec_uint32 ("flags",
93 : &flags32),
94 0 : GNUNET_PQ_result_spec_timestamp ("merge_timestamp",
95 : &merge_timestamp),
96 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
97 : &purse_pub),
98 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
99 : &reserve_pub),
100 0 : GNUNET_PQ_result_spec_auto_from_type ("merge_sig",
101 : &merge_sig),
102 0 : GNUNET_PQ_result_spec_auto_from_type ("merge_pub",
103 : &merge_pub),
104 0 : GNUNET_PQ_result_spec_uint64 ("purse_merge_request_serial_id",
105 : &rowid),
106 : GNUNET_PQ_result_spec_end
107 : };
108 : enum GNUNET_GenericReturnValue ret;
109 :
110 0 : if (GNUNET_OK !=
111 0 : GNUNET_PQ_extract_result (result,
112 : rs,
113 : i))
114 : {
115 0 : GNUNET_break (0);
116 0 : dsc->status = GNUNET_SYSERR;
117 0 : return;
118 : }
119 0 : flags = (enum TALER_WalletAccountMergeFlags) flags32;
120 0 : ret = dsc->cb (dsc->cb_cls,
121 : rowid,
122 : partner_base_url,
123 : &amount,
124 : &balance,
125 : flags,
126 : &merge_pub,
127 : &reserve_pub,
128 : &merge_sig,
129 : &purse_pub,
130 : merge_timestamp);
131 0 : GNUNET_PQ_cleanup_result (rs);
132 0 : if (GNUNET_OK != ret)
133 0 : break;
134 : }
135 : }
136 :
137 :
138 : enum GNUNET_DB_QueryStatus
139 4 : TALER_TALER_TALER_EXCHANGEDB_select_purse_merges_above_serial_id (
140 : struct TALER_EXCHANGEDB_PostgresContext *pg,
141 : uint64_t serial_id,
142 : TALER_EXCHANGEDB_PurseMergeCallback cb,
143 : void *cb_cls)
144 : {
145 4 : struct GNUNET_PQ_QueryParam params[] = {
146 4 : GNUNET_PQ_query_param_uint64 (&serial_id),
147 : GNUNET_PQ_query_param_end
148 : };
149 4 : struct PurseMergeSerialContext dsc = {
150 : .cb = cb,
151 : .cb_cls = cb_cls,
152 : .pg = pg,
153 : .status = GNUNET_OK
154 : };
155 : enum GNUNET_DB_QueryStatus qs;
156 :
157 4 : PREPARE (pg,
158 : "audit_get_purse_merge_incr",
159 : "SELECT"
160 : " pm.purse_merge_request_serial_id"
161 : ",partner_base_url"
162 : ",pr.amount_with_fee"
163 : ",pr.balance"
164 : ",pr.flags"
165 : ",pr.merge_pub"
166 : ",pm.reserve_pub"
167 : ",pm.merge_sig"
168 : ",pm.purse_pub"
169 : ",pm.merge_timestamp"
170 : " FROM purse_merges pm"
171 : " JOIN purse_requests pr USING (purse_pub)"
172 : " LEFT JOIN partners USING (partner_serial_id)"
173 : " WHERE ("
174 : " (purse_merge_request_serial_id>=$1)"
175 : " )"
176 : " ORDER BY purse_merge_request_serial_id ASC;");
177 :
178 4 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
179 : "audit_get_purse_merge_incr",
180 : params,
181 : &purse_merges_serial_helper_cb,
182 : &dsc);
183 4 : if (GNUNET_OK != dsc.status)
184 0 : return GNUNET_DB_STATUS_HARD_ERROR;
185 4 : return qs;
186 : }
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