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_requests_above_serial_id.c
18 : * @brief Implementation of the select_purse_requests_above_serial_id function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/taler_pq_lib.h"
22 : #include "exchange-database/select_purse_requests_above_serial_id.h"
23 : #include "helper.h"
24 :
25 :
26 : /**
27 : * Closure for #purse_deposit_serial_helper_cb().
28 : */
29 : struct PurseRequestsSerialContext
30 : {
31 :
32 : /**
33 : * Callback to call.
34 : */
35 : TALER_EXCHANGEDB_PurseRequestCallback 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 PurseRequestsSerialContext`
59 : * @param result the postgres result
60 : * @param num_results the number of results in @a result
61 : */
62 : static void
63 4 : purse_requests_serial_helper_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 4 : struct PurseRequestsSerialContext *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 : struct TALER_Amount target_amount;
74 : uint32_t age_limit;
75 : struct TALER_PurseMergePublicKeyP merge_pub;
76 : struct TALER_PurseContractPublicKeyP purse_pub;
77 : struct TALER_PrivateContractHashP h_contract_terms;
78 : struct TALER_PurseContractSignatureP purse_sig;
79 : struct GNUNET_TIME_Timestamp purse_creation;
80 : struct GNUNET_TIME_Timestamp purse_expiration;
81 0 : struct GNUNET_PQ_ResultSpec rs[] = {
82 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
83 : &target_amount),
84 0 : GNUNET_PQ_result_spec_uint32 ("age_limit",
85 : &age_limit),
86 0 : GNUNET_PQ_result_spec_timestamp ("purse_creation",
87 : &purse_creation),
88 0 : GNUNET_PQ_result_spec_timestamp ("purse_expiration",
89 : &purse_expiration),
90 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
91 : &purse_pub),
92 0 : GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
93 : &h_contract_terms),
94 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_sig",
95 : &purse_sig),
96 0 : GNUNET_PQ_result_spec_auto_from_type ("merge_pub",
97 : &merge_pub),
98 0 : GNUNET_PQ_result_spec_uint64 ("purse_requests_serial_id",
99 : &rowid),
100 : GNUNET_PQ_result_spec_end
101 : };
102 : enum GNUNET_GenericReturnValue ret;
103 :
104 0 : if (GNUNET_OK !=
105 0 : GNUNET_PQ_extract_result (result,
106 : rs,
107 : i))
108 : {
109 0 : GNUNET_break (0);
110 0 : dsc->status = GNUNET_SYSERR;
111 0 : return;
112 : }
113 0 : ret = dsc->cb (dsc->cb_cls,
114 : rowid,
115 : &purse_pub,
116 : &merge_pub,
117 : purse_creation,
118 : purse_expiration,
119 : &h_contract_terms,
120 : age_limit,
121 : &target_amount,
122 : &purse_sig);
123 0 : GNUNET_PQ_cleanup_result (rs);
124 0 : if (GNUNET_OK != ret)
125 0 : break;
126 : }
127 : }
128 :
129 :
130 : enum GNUNET_DB_QueryStatus
131 4 : TALER_TALER_EXCHANGEDB_select_purse_requests_above_serial_id (
132 : struct TALER_EXCHANGEDB_PostgresContext *pg,
133 : uint64_t serial_id,
134 : TALER_EXCHANGEDB_PurseRequestCallback cb,
135 : void *cb_cls)
136 : {
137 4 : struct GNUNET_PQ_QueryParam params[] = {
138 4 : GNUNET_PQ_query_param_uint64 (&serial_id),
139 : GNUNET_PQ_query_param_end
140 : };
141 4 : struct PurseRequestsSerialContext dsc = {
142 : .cb = cb,
143 : .cb_cls = cb_cls,
144 : .pg = pg,
145 : .status = GNUNET_OK
146 : };
147 : enum GNUNET_DB_QueryStatus qs;
148 :
149 4 : PREPARE (pg,
150 : "audit_get_purse_requests_incr",
151 : "SELECT"
152 : " purse_requests_serial_id"
153 : ",purse_pub"
154 : ",amount_with_fee"
155 : ",age_limit"
156 : ",h_contract_terms"
157 : ",purse_creation"
158 : ",purse_expiration"
159 : ",merge_pub"
160 : ",purse_sig"
161 : " FROM purse_requests"
162 : " WHERE ("
163 : " (purse_requests_serial_id>=$1)"
164 : " )"
165 : " ORDER BY purse_requests_serial_id ASC;");
166 4 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
167 : "audit_get_purse_requests_incr",
168 : params,
169 : &purse_requests_serial_helper_cb,
170 : &dsc);
171 4 : if (GNUNET_OK != dsc.status)
172 0 : return GNUNET_DB_STATUS_HARD_ERROR;
173 4 : return qs;
174 : }
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