Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2024 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 exchangedb/pg_lookup_kyc_history.c
18 : * @brief Implementation of the lookup_kyc_history 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_lookup_kyc_history.h"
26 : #include "pg_helper.h"
27 :
28 : /**
29 : * Closure for callbacks called from #TEH_PG_lookup_kyc_history()
30 : */
31 : struct KycHistoryContext
32 : {
33 :
34 : /**
35 : * Function to call on each result.
36 : */
37 : TALER_EXCHANGEDB_KycHistoryCallback cb;
38 :
39 : /**
40 : * Closure for @e cb.
41 : */
42 : void *cb_cls;
43 :
44 : /**
45 : * Plugin context.
46 : */
47 : struct PostgresClosure *pg;
48 :
49 : /**
50 : * Set to 'true' if the transaction failed.
51 : */
52 : bool failed;
53 :
54 : };
55 :
56 :
57 : /**
58 : * 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 KycHistoryContext`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 0 : handle_kyc_entry (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 0 : struct KycHistoryContext *khc = cls;
71 :
72 0 : for (unsigned int i = 0; i < num_results; i++)
73 : {
74 0 : char *provider_name = NULL;
75 : bool finished;
76 : uint32_t error_code;
77 0 : char *error_message = NULL;
78 0 : char *provider_user_id = NULL;
79 0 : char *provider_legitimization_id = NULL;
80 : struct GNUNET_TIME_Timestamp collection_time;
81 0 : struct GNUNET_TIME_Absolute expiration_time
82 : = GNUNET_TIME_UNIT_ZERO_ABS;
83 : void *encrypted_attributes;
84 : size_t encrypted_attributes_len;
85 :
86 0 : struct GNUNET_PQ_ResultSpec rs[] = {
87 0 : GNUNET_PQ_result_spec_allow_null (
88 : GNUNET_PQ_result_spec_string ("provider_name",
89 : &provider_name),
90 : NULL),
91 0 : GNUNET_PQ_result_spec_bool ("finished",
92 : &finished),
93 0 : GNUNET_PQ_result_spec_uint32 ("error_code",
94 : &error_code),
95 0 : GNUNET_PQ_result_spec_allow_null (
96 : GNUNET_PQ_result_spec_string ("error_message",
97 : &error_message),
98 : NULL),
99 0 : GNUNET_PQ_result_spec_allow_null (
100 : GNUNET_PQ_result_spec_string ("provider_user_id",
101 : &provider_user_id),
102 : NULL),
103 0 : GNUNET_PQ_result_spec_allow_null (
104 : GNUNET_PQ_result_spec_string ("provider_legitimization_id",
105 : &provider_legitimization_id),
106 : NULL),
107 0 : GNUNET_PQ_result_spec_timestamp ("collection_time",
108 : &collection_time),
109 0 : GNUNET_PQ_result_spec_allow_null (
110 : GNUNET_PQ_result_spec_absolute_time ("expiration_time",
111 : &expiration_time),
112 : NULL),
113 0 : GNUNET_PQ_result_spec_variable_size ("encrypted_attributes",
114 : &encrypted_attributes,
115 : &encrypted_attributes_len),
116 : GNUNET_PQ_result_spec_end
117 : };
118 :
119 0 : if (GNUNET_OK !=
120 0 : GNUNET_PQ_extract_result (result,
121 : rs,
122 : i))
123 : {
124 0 : GNUNET_break (0);
125 0 : khc->failed = true;
126 0 : return;
127 : }
128 0 : khc->cb (khc->cb_cls,
129 : provider_name,
130 : finished,
131 : (enum TALER_ErrorCode) error_code,
132 : error_message,
133 : provider_user_id,
134 : provider_legitimization_id,
135 : collection_time,
136 : expiration_time,
137 : encrypted_attributes_len,
138 : encrypted_attributes);
139 0 : GNUNET_PQ_cleanup_result (rs);
140 : }
141 : }
142 :
143 :
144 : enum GNUNET_DB_QueryStatus
145 0 : TEH_PG_lookup_kyc_history (
146 : void *cls,
147 : const struct TALER_NormalizedPaytoHashP *h_payto,
148 : TALER_EXCHANGEDB_KycHistoryCallback cb,
149 : void *cb_cls)
150 : {
151 0 : struct PostgresClosure *pg = cls;
152 0 : struct KycHistoryContext khc = {
153 : .pg = pg,
154 : .cb = cb,
155 : .cb_cls = cb_cls
156 : };
157 0 : struct GNUNET_PQ_QueryParam params[] = {
158 0 : GNUNET_PQ_query_param_auto_from_type (h_payto),
159 : GNUNET_PQ_query_param_end
160 : };
161 : enum GNUNET_DB_QueryStatus qs;
162 :
163 0 : PREPARE (pg,
164 : "lookup_kyc_history",
165 : "SELECT"
166 : " lp.provider_name"
167 : ",lp.finished"
168 : ",lp.error_code"
169 : ",lp.error_message"
170 : ",lp.provider_user_id"
171 : ",lp.provider_legitimization_id"
172 : ",ka.collection_time"
173 : ",ka.expiration_time"
174 : ",ka.encrypted_attributes"
175 : " FROM kyc_attributes ka"
176 : " JOIN legitimization_processes lp"
177 : " ON (ka.legitimization_serial = lp.legitimization_process_serial_id)"
178 : " WHERE ka.h_payto=$1"
179 : " ORDER BY ka.collection_time DESC;");
180 :
181 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
182 : pg->conn,
183 : "lookup_kyc_history",
184 : params,
185 : &handle_kyc_entry,
186 : &khc);
187 0 : if (qs <= 0)
188 0 : return qs;
189 0 : if (khc.failed)
190 : {
191 0 : GNUNET_break (0);
192 0 : return GNUNET_DB_STATUS_HARD_ERROR;
193 : }
194 0 : return qs;
195 : }
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