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 pg_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/platform.h"
22 : #include "taler/taler_error_codes.h"
23 : #include "taler/taler_dbevents.h"
24 : #include "taler/taler_pq_lib.h"
25 : #include "pg_select_purse_merges_above_serial_id.h"
26 : #include "pg_helper.h"
27 :
28 :
29 : /**
30 : * Closure for #purse_deposit_serial_helper_cb().
31 : */
32 : struct PurseMergeSerialContext
33 : {
34 :
35 : /**
36 : * Callback to call.
37 : */
38 : TALER_EXCHANGEDB_PurseMergeCallback cb;
39 :
40 : /**
41 : * Closure for @e cb.
42 : */
43 : void *cb_cls;
44 :
45 : /**
46 : * Plugin context.
47 : */
48 : struct PostgresClosure *pg;
49 :
50 : /**
51 : * Status code, set to #GNUNET_SYSERR on hard errors.
52 : */
53 : enum GNUNET_GenericReturnValue status;
54 : };
55 :
56 :
57 : /**
58 : * Helper function to be called with the results of a SELECT statement
59 : * that has returned @a num_results results.
60 : *
61 : * @param cls closure of type `struct PurseMergeSerialContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 74 : purse_merges_serial_helper_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 74 : struct PurseMergeSerialContext *dsc = cls;
71 74 : struct PostgresClosure *pg = dsc->pg;
72 :
73 74 : for (unsigned int i = 0; i<num_results; i++)
74 : {
75 : uint64_t rowid;
76 0 : char *partner_base_url = NULL;
77 : struct TALER_Amount amount;
78 : struct TALER_Amount balance;
79 : uint32_t flags32;
80 : enum TALER_WalletAccountMergeFlags flags;
81 : struct TALER_PurseMergePublicKeyP merge_pub;
82 : struct TALER_ReservePublicKeyP reserve_pub;
83 : struct TALER_PurseMergeSignatureP merge_sig;
84 : struct TALER_PurseContractPublicKeyP purse_pub;
85 : struct GNUNET_TIME_Timestamp merge_timestamp;
86 0 : struct GNUNET_PQ_ResultSpec rs[] = {
87 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
88 : &amount),
89 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("balance",
90 : &balance),
91 0 : GNUNET_PQ_result_spec_allow_null (
92 : GNUNET_PQ_result_spec_string ("partner_base_url",
93 : &partner_base_url),
94 : NULL),
95 0 : GNUNET_PQ_result_spec_uint32 ("flags",
96 : &flags32),
97 0 : GNUNET_PQ_result_spec_timestamp ("merge_timestamp",
98 : &merge_timestamp),
99 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
100 : &purse_pub),
101 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
102 : &reserve_pub),
103 0 : GNUNET_PQ_result_spec_auto_from_type ("merge_sig",
104 : &merge_sig),
105 0 : GNUNET_PQ_result_spec_auto_from_type ("merge_pub",
106 : &merge_pub),
107 0 : GNUNET_PQ_result_spec_uint64 ("purse_merge_request_serial_id",
108 : &rowid),
109 : GNUNET_PQ_result_spec_end
110 : };
111 : enum GNUNET_GenericReturnValue ret;
112 :
113 0 : if (GNUNET_OK !=
114 0 : GNUNET_PQ_extract_result (result,
115 : rs,
116 : i))
117 : {
118 0 : GNUNET_break (0);
119 0 : dsc->status = GNUNET_SYSERR;
120 0 : return;
121 : }
122 0 : flags = (enum TALER_WalletAccountMergeFlags) flags32;
123 0 : ret = dsc->cb (dsc->cb_cls,
124 : rowid,
125 : partner_base_url,
126 : &amount,
127 : &balance,
128 : flags,
129 : &merge_pub,
130 : &reserve_pub,
131 : &merge_sig,
132 : &purse_pub,
133 : merge_timestamp);
134 0 : GNUNET_PQ_cleanup_result (rs);
135 0 : if (GNUNET_OK != ret)
136 0 : break;
137 : }
138 : }
139 :
140 :
141 : enum GNUNET_DB_QueryStatus
142 74 : TEH_PG_select_purse_merges_above_serial_id (
143 : void *cls,
144 : uint64_t serial_id,
145 : TALER_EXCHANGEDB_PurseMergeCallback cb,
146 : void *cb_cls)
147 : {
148 74 : struct PostgresClosure *pg = cls;
149 74 : struct GNUNET_PQ_QueryParam params[] = {
150 74 : GNUNET_PQ_query_param_uint64 (&serial_id),
151 : GNUNET_PQ_query_param_end
152 : };
153 74 : struct PurseMergeSerialContext dsc = {
154 : .cb = cb,
155 : .cb_cls = cb_cls,
156 : .pg = pg,
157 : .status = GNUNET_OK
158 : };
159 : enum GNUNET_DB_QueryStatus qs;
160 :
161 74 : PREPARE (pg,
162 : "audit_get_purse_merge_incr",
163 : "SELECT"
164 : " pm.purse_merge_request_serial_id"
165 : ",partner_base_url"
166 : ",pr.amount_with_fee"
167 : ",pr.balance"
168 : ",pr.flags"
169 : ",pr.merge_pub"
170 : ",pm.reserve_pub"
171 : ",pm.merge_sig"
172 : ",pm.purse_pub"
173 : ",pm.merge_timestamp"
174 : " FROM purse_merges pm"
175 : " JOIN purse_requests pr USING (purse_pub)"
176 : " LEFT JOIN partners USING (partner_serial_id)"
177 : " WHERE ("
178 : " (purse_merge_request_serial_id>=$1)"
179 : " )"
180 : " ORDER BY purse_merge_request_serial_id ASC;");
181 :
182 74 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
183 : "audit_get_purse_merge_incr",
184 : params,
185 : &purse_merges_serial_helper_cb,
186 : &dsc);
187 74 : if (GNUNET_OK != dsc.status)
188 0 : return GNUNET_DB_STATUS_HARD_ERROR;
189 74 : return qs;
190 : }
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