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_account_merges_above_serial_id.c
18 : * @brief Implementation of the select_account_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_account_merges_above_serial_id.h"
26 : #include "pg_helper.h"
27 :
28 :
29 : /**
30 : * Closure for #account_merge_serial_helper_cb().
31 : */
32 : struct AccountMergeSerialContext
33 : {
34 :
35 : /**
36 : * Callback to call.
37 : */
38 : TALER_EXCHANGEDB_AccountMergeCallback 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 AccountMergeSerialContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 8 : account_merge_serial_helper_cb (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 8 : struct AccountMergeSerialContext *dsc = cls;
71 8 : struct PostgresClosure *pg = dsc->pg;
72 :
73 8 : for (unsigned int i = 0; i<num_results; i++)
74 : {
75 : struct TALER_ReservePublicKeyP reserve_pub;
76 : struct TALER_PurseContractPublicKeyP purse_pub;
77 : struct TALER_PrivateContractHashP h_contract_terms;
78 : struct GNUNET_TIME_Timestamp purse_expiration;
79 : struct TALER_Amount amount;
80 : uint32_t min_age;
81 : uint32_t flags32;
82 : enum TALER_WalletAccountMergeFlags flags;
83 : struct TALER_Amount purse_fee;
84 : struct GNUNET_TIME_Timestamp merge_timestamp;
85 : struct TALER_ReserveSignatureP reserve_sig;
86 : uint64_t rowid;
87 0 : struct GNUNET_PQ_ResultSpec rs[] = {
88 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
89 : &amount),
90 0 : TALER_PQ_RESULT_SPEC_AMOUNT ("purse_fee",
91 : &purse_fee),
92 0 : GNUNET_PQ_result_spec_uint32 ("flags",
93 : &flags32),
94 0 : GNUNET_PQ_result_spec_uint32 ("age_limit",
95 : &min_age),
96 0 : GNUNET_PQ_result_spec_timestamp ("purse_expiration",
97 : &purse_expiration),
98 0 : GNUNET_PQ_result_spec_timestamp ("merge_timestamp",
99 : &merge_timestamp),
100 0 : GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
101 : &h_contract_terms),
102 0 : GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
103 : &purse_pub),
104 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_sig",
105 : &reserve_sig),
106 0 : GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
107 : &reserve_pub),
108 0 : GNUNET_PQ_result_spec_uint64 ("account_merge_request_serial_id",
109 : &rowid),
110 : GNUNET_PQ_result_spec_end
111 : };
112 : enum GNUNET_GenericReturnValue ret;
113 :
114 0 : if (GNUNET_OK !=
115 0 : GNUNET_PQ_extract_result (result,
116 : rs,
117 : i))
118 : {
119 0 : GNUNET_break (0);
120 0 : dsc->status = GNUNET_SYSERR;
121 0 : return;
122 : }
123 0 : flags = (enum TALER_WalletAccountMergeFlags) flags32;
124 0 : ret = dsc->cb (dsc->cb_cls,
125 : rowid,
126 : &reserve_pub,
127 : &purse_pub,
128 : &h_contract_terms,
129 : purse_expiration,
130 : &amount,
131 : min_age,
132 : flags,
133 : &purse_fee,
134 : merge_timestamp,
135 : &reserve_sig);
136 0 : GNUNET_PQ_cleanup_result (rs);
137 0 : if (GNUNET_OK != ret)
138 0 : break;
139 : }
140 : }
141 :
142 :
143 : enum GNUNET_DB_QueryStatus
144 8 : TEH_PG_select_account_merges_above_serial_id (
145 : void *cls,
146 : uint64_t serial_id,
147 : TALER_EXCHANGEDB_AccountMergeCallback cb,
148 : void *cb_cls)
149 : {
150 8 : struct PostgresClosure *pg = cls;
151 8 : struct GNUNET_PQ_QueryParam params[] = {
152 8 : GNUNET_PQ_query_param_uint64 (&serial_id),
153 : GNUNET_PQ_query_param_end
154 : };
155 8 : struct AccountMergeSerialContext dsc = {
156 : .cb = cb,
157 : .cb_cls = cb_cls,
158 : .pg = pg,
159 : .status = GNUNET_OK
160 : };
161 : enum GNUNET_DB_QueryStatus qs;
162 :
163 8 : PREPARE (pg,
164 : "audit_get_account_merge_incr",
165 : "SELECT"
166 : " am.account_merge_request_serial_id"
167 : ",am.reserve_pub"
168 : ",am.purse_pub"
169 : ",pr.h_contract_terms"
170 : ",pr.purse_expiration"
171 : ",pr.amount_with_fee"
172 : ",pr.age_limit"
173 : ",pr.flags"
174 : ",pr.purse_fee"
175 : ",pm.merge_timestamp"
176 : ",am.reserve_sig"
177 : " FROM account_merges am"
178 : " JOIN purse_requests pr USING (purse_pub)"
179 : " JOIN purse_merges pm USING (purse_pub)"
180 : " WHERE ("
181 : " (account_merge_request_serial_id>=$1)"
182 : " )"
183 : " ORDER BY account_merge_request_serial_id ASC;");
184 8 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
185 : "audit_get_account_merge_incr",
186 : params,
187 : &account_merge_serial_helper_cb,
188 : &dsc);
189 8 : if (GNUNET_OK != dsc.status)
190 0 : return GNUNET_DB_STATUS_HARD_ERROR;
191 8 : return qs;
192 : }
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