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_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/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_requests_above_serial_id.h"
26 : #include "pg_helper.h"
27 :
28 :
29 : /**
30 : * Closure for #purse_deposit_serial_helper_cb().
31 : */
32 : struct PurseRequestsSerialContext
33 : {
34 :
35 : /**
36 : * Callback to call.
37 : */
38 : TALER_EXCHANGEDB_PurseRequestCallback 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 PurseRequestsSerialContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 74 : purse_requests_serial_helper_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 74 : struct PurseRequestsSerialContext *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 : struct TALER_Amount target_amount;
77 : uint32_t age_limit;
78 : struct TALER_PurseMergePublicKeyP merge_pub;
79 : struct TALER_PurseContractPublicKeyP purse_pub;
80 : struct TALER_PrivateContractHashP h_contract_terms;
81 : struct TALER_PurseContractSignatureP purse_sig;
82 : struct GNUNET_TIME_Timestamp purse_creation;
83 : struct GNUNET_TIME_Timestamp purse_expiration;
84 0 : struct GNUNET_PQ_ResultSpec rs[] = {
85 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
86 : &target_amount),
87 0 : GNUNET_PQ_result_spec_uint32 ("age_limit",
88 : &age_limit),
89 0 : GNUNET_PQ_result_spec_timestamp ("purse_creation",
90 : &purse_creation),
91 0 : GNUNET_PQ_result_spec_timestamp ("purse_expiration",
92 : &purse_expiration),
93 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
94 : &purse_pub),
95 0 : GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
96 : &h_contract_terms),
97 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_sig",
98 : &purse_sig),
99 0 : GNUNET_PQ_result_spec_auto_from_type ("merge_pub",
100 : &merge_pub),
101 0 : GNUNET_PQ_result_spec_uint64 ("purse_requests_serial_id",
102 : &rowid),
103 : GNUNET_PQ_result_spec_end
104 : };
105 : enum GNUNET_GenericReturnValue ret;
106 :
107 0 : if (GNUNET_OK !=
108 0 : GNUNET_PQ_extract_result (result,
109 : rs,
110 : i))
111 : {
112 0 : GNUNET_break (0);
113 0 : dsc->status = GNUNET_SYSERR;
114 0 : return;
115 : }
116 0 : ret = dsc->cb (dsc->cb_cls,
117 : rowid,
118 : &purse_pub,
119 : &merge_pub,
120 : purse_creation,
121 : purse_expiration,
122 : &h_contract_terms,
123 : age_limit,
124 : &target_amount,
125 : &purse_sig);
126 0 : GNUNET_PQ_cleanup_result (rs);
127 0 : if (GNUNET_OK != ret)
128 0 : break;
129 : }
130 : }
131 :
132 :
133 : enum GNUNET_DB_QueryStatus
134 74 : TEH_PG_select_purse_requests_above_serial_id (
135 : void *cls,
136 : uint64_t serial_id,
137 : TALER_EXCHANGEDB_PurseRequestCallback cb,
138 : void *cb_cls)
139 : {
140 74 : struct PostgresClosure *pg = cls;
141 74 : struct GNUNET_PQ_QueryParam params[] = {
142 74 : GNUNET_PQ_query_param_uint64 (&serial_id),
143 : GNUNET_PQ_query_param_end
144 : };
145 74 : struct PurseRequestsSerialContext dsc = {
146 : .cb = cb,
147 : .cb_cls = cb_cls,
148 : .pg = pg,
149 : .status = GNUNET_OK
150 : };
151 : enum GNUNET_DB_QueryStatus qs;
152 :
153 74 : PREPARE (pg,
154 : "audit_get_purse_requests_incr",
155 : "SELECT"
156 : " purse_requests_serial_id"
157 : ",purse_pub"
158 : ",amount_with_fee"
159 : ",age_limit"
160 : ",h_contract_terms"
161 : ",purse_creation"
162 : ",purse_expiration"
163 : ",merge_pub"
164 : ",purse_sig"
165 : " FROM purse_requests"
166 : " WHERE ("
167 : " (purse_requests_serial_id>=$1)"
168 : " )"
169 : " ORDER BY purse_requests_serial_id ASC;");
170 74 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
171 : "audit_get_purse_requests_incr",
172 : params,
173 : &purse_requests_serial_helper_cb,
174 : &dsc);
175 74 : if (GNUNET_OK != dsc.status)
176 0 : return GNUNET_DB_STATUS_HARD_ERROR;
177 74 : return qs;
178 : }
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