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/lookup_kyc_history.c
18 : * @brief Implementation of the lookup_kyc_history function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/taler_error_codes.h"
22 : #include "taler/taler_pq_lib.h"
23 : #include "exchange-database/lookup_kyc_history.h"
24 : #include "helper.h"
25 :
26 : /**
27 : * Closure for callbacks called from #TALER_EXCHANGEDB_lookup_kyc_history()
28 : */
29 : struct KycHistoryContext
30 : {
31 :
32 : /**
33 : * Function to call on each result.
34 : */
35 : TALER_EXCHANGEDB_KycHistoryCallback 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 : * Set to 'true' if the transaction failed.
49 : */
50 : bool failed;
51 :
52 : };
53 :
54 :
55 : /**
56 : * Function to be called with the results of a SELECT statement
57 : * that has returned @a num_results results.
58 : *
59 : * @param cls closure of type `struct KycHistoryContext`
60 : * @param result the postgres result
61 : * @param num_results the number of results in @a result
62 : */
63 : static void
64 0 : handle_kyc_entry (void *cls,
65 : PGresult *result,
66 : unsigned int num_results)
67 : {
68 0 : struct KycHistoryContext *khc = cls;
69 :
70 0 : for (unsigned int i = 0; i < num_results; i++)
71 : {
72 0 : char *provider_name = NULL;
73 : bool finished;
74 : uint32_t error_code;
75 0 : char *error_message = NULL;
76 0 : char *provider_user_id = NULL;
77 0 : char *provider_legitimization_id = NULL;
78 : struct GNUNET_TIME_Timestamp collection_time;
79 0 : struct GNUNET_TIME_Absolute expiration_time
80 : = GNUNET_TIME_UNIT_ZERO_ABS;
81 : void *encrypted_attributes;
82 : size_t encrypted_attributes_len;
83 :
84 0 : struct GNUNET_PQ_ResultSpec rs[] = {
85 0 : GNUNET_PQ_result_spec_allow_null (
86 : GNUNET_PQ_result_spec_string ("provider_name",
87 : &provider_name),
88 : NULL),
89 0 : GNUNET_PQ_result_spec_bool ("finished",
90 : &finished),
91 0 : GNUNET_PQ_result_spec_uint32 ("error_code",
92 : &error_code),
93 0 : GNUNET_PQ_result_spec_allow_null (
94 : GNUNET_PQ_result_spec_string ("error_message",
95 : &error_message),
96 : NULL),
97 0 : GNUNET_PQ_result_spec_allow_null (
98 : GNUNET_PQ_result_spec_string ("provider_user_id",
99 : &provider_user_id),
100 : NULL),
101 0 : GNUNET_PQ_result_spec_allow_null (
102 : GNUNET_PQ_result_spec_string ("provider_legitimization_id",
103 : &provider_legitimization_id),
104 : NULL),
105 0 : GNUNET_PQ_result_spec_timestamp ("collection_time",
106 : &collection_time),
107 0 : GNUNET_PQ_result_spec_allow_null (
108 : GNUNET_PQ_result_spec_absolute_time ("expiration_time",
109 : &expiration_time),
110 : NULL),
111 0 : GNUNET_PQ_result_spec_variable_size ("encrypted_attributes",
112 : &encrypted_attributes,
113 : &encrypted_attributes_len),
114 : GNUNET_PQ_result_spec_end
115 : };
116 :
117 0 : if (GNUNET_OK !=
118 0 : GNUNET_PQ_extract_result (result,
119 : rs,
120 : i))
121 : {
122 0 : GNUNET_break (0);
123 0 : khc->failed = true;
124 0 : return;
125 : }
126 0 : khc->cb (khc->cb_cls,
127 : provider_name,
128 : finished,
129 : (enum TALER_ErrorCode) error_code,
130 : error_message,
131 : provider_user_id,
132 : provider_legitimization_id,
133 : collection_time,
134 : expiration_time,
135 : encrypted_attributes_len,
136 : encrypted_attributes);
137 0 : GNUNET_PQ_cleanup_result (rs);
138 : }
139 : }
140 :
141 :
142 : enum GNUNET_DB_QueryStatus
143 0 : TALER_EXCHANGEDB_lookup_kyc_history (
144 : struct TALER_EXCHANGEDB_PostgresContext *pg,
145 : const struct TALER_NormalizedPaytoHashP *h_payto,
146 : TALER_EXCHANGEDB_KycHistoryCallback cb,
147 : void *cb_cls)
148 : {
149 0 : struct KycHistoryContext khc = {
150 : .pg = pg,
151 : .cb = cb,
152 : .cb_cls = cb_cls
153 : };
154 0 : struct GNUNET_PQ_QueryParam params[] = {
155 0 : GNUNET_PQ_query_param_auto_from_type (h_payto),
156 : GNUNET_PQ_query_param_end
157 : };
158 : enum GNUNET_DB_QueryStatus qs;
159 :
160 0 : PREPARE (pg,
161 : "lookup_kyc_history",
162 : "SELECT"
163 : " lp.provider_name"
164 : ",lp.finished"
165 : ",lp.error_code"
166 : ",lp.error_message"
167 : ",lp.provider_user_id"
168 : ",lp.provider_legitimization_id"
169 : ",ka.collection_time"
170 : ",ka.expiration_time"
171 : ",ka.encrypted_attributes"
172 : " FROM kyc_attributes ka"
173 : " JOIN legitimization_processes lp"
174 : " ON (ka.legitimization_serial = lp.legitimization_process_serial_id)"
175 : " WHERE ka.h_payto=$1"
176 : " ORDER BY ka.collection_time DESC;");
177 :
178 0 : qs = GNUNET_PQ_eval_prepared_multi_select (
179 : pg->conn,
180 : "lookup_kyc_history",
181 : params,
182 : &handle_kyc_entry,
183 : &khc);
184 0 : if (qs <= 0)
185 0 : return qs;
186 0 : if (khc.failed)
187 : {
188 0 : GNUNET_break (0);
189 0 : return GNUNET_DB_STATUS_HARD_ERROR;
190 : }
191 0 : return qs;
192 : }
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