Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2025 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/select_kyc_accounts.c
18 : * @brief Implementation of the select_kyc_accounts function for Postgres
19 : * @author Christian Grothoff
20 : */
21 : #include "taler/taler_pq_lib.h"
22 : #include "exchange-database/select_kyc_accounts.h"
23 : #include "helper.h"
24 :
25 :
26 : /**
27 : * Closure for #handle_aml_result.
28 : */
29 : struct KycAccountResultContext
30 : {
31 : /**
32 : * Function to call on each result.
33 : */
34 : TALER_EXCHANGEDB_AmlAccountListCallback cb;
35 :
36 : /**
37 : * Closure for @e cb.
38 : */
39 : void *cb_cls;
40 :
41 : /**
42 : * Plugin context.
43 : */
44 : struct TALER_EXCHANGEDB_PostgresContext *pg;
45 :
46 : /**
47 : * Set to #GNUNET_SYSERR on serious errors.
48 : */
49 : enum GNUNET_GenericReturnValue status;
50 : };
51 :
52 :
53 : /**
54 : * Function to be called with the results of a SELECT statement
55 : * that has returned @a num_results results. Helper function
56 : * for #TALER_EXCHANGEDB_select_kyc_accounts().
57 : *
58 : * @param cls closure of type `struct KycAccountResultContext *`
59 : * @param result the postgres result
60 : * @param num_results the number of results in @a result
61 : */
62 : static void
63 0 : handle_kyc_account_cb (void *cls,
64 : PGresult *result,
65 : unsigned int num_results)
66 : {
67 0 : struct KycAccountResultContext *ctx = cls;
68 :
69 0 : for (unsigned int i = 0; i<num_results; i++)
70 : {
71 : uint64_t rowid;
72 : struct TALER_NormalizedPaytoHashP h_payto;
73 0 : char *comments = NULL;
74 0 : struct GNUNET_TIME_Timestamp open_time
75 : = GNUNET_TIME_UNIT_FOREVER_TS;
76 0 : struct GNUNET_TIME_Timestamp close_time
77 : = GNUNET_TIME_UNIT_FOREVER_TS;
78 : bool to_investigate;
79 : bool high_risk;
80 : struct TALER_FullPayto payto;
81 0 : struct GNUNET_PQ_ResultSpec rs[] = {
82 0 : GNUNET_PQ_result_spec_uint64 ("kyc_target_serial_id",
83 : &rowid),
84 0 : GNUNET_PQ_result_spec_auto_from_type ("h_payto",
85 : &h_payto),
86 0 : GNUNET_PQ_result_spec_allow_null (
87 : GNUNET_PQ_result_spec_string ("comments",
88 : &comments),
89 : NULL),
90 0 : GNUNET_PQ_result_spec_allow_null (
91 : GNUNET_PQ_result_spec_timestamp ("open_time",
92 : &open_time),
93 : NULL),
94 0 : GNUNET_PQ_result_spec_allow_null (
95 : GNUNET_PQ_result_spec_timestamp ("close_time",
96 : &close_time),
97 : NULL),
98 0 : GNUNET_PQ_result_spec_bool ("to_investigate",
99 : &to_investigate),
100 0 : GNUNET_PQ_result_spec_bool ("high_risk",
101 : &high_risk),
102 0 : GNUNET_PQ_result_spec_string ("payto_uri",
103 : &payto.full_payto),
104 : GNUNET_PQ_result_spec_end
105 : };
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 : ctx->status = GNUNET_SYSERR;
114 0 : return;
115 : }
116 0 : ctx->cb (ctx->cb_cls,
117 : rowid,
118 : &h_payto,
119 : open_time,
120 : close_time,
121 : comments,
122 : high_risk,
123 : to_investigate,
124 : payto);
125 0 : GNUNET_PQ_cleanup_result (rs);
126 : }
127 : }
128 :
129 :
130 : enum GNUNET_DB_QueryStatus
131 0 : TALER_EXCHANGEDB_select_kyc_accounts (
132 : struct TALER_EXCHANGEDB_PostgresContext *pg,
133 : enum TALER_EXCHANGE_YesNoAll investigation_only,
134 : enum TALER_EXCHANGE_YesNoAll open_only,
135 : enum TALER_EXCHANGE_YesNoAll high_risk_only,
136 : uint64_t offset,
137 : int64_t limit,
138 : TALER_EXCHANGEDB_AmlAccountListCallback cb,
139 : void *cb_cls)
140 : {
141 0 : uint64_t ulimit = (limit > 0) ? limit : -limit;
142 0 : struct GNUNET_PQ_QueryParam params[] = {
143 0 : GNUNET_PQ_query_param_uint64 (&offset),
144 0 : GNUNET_PQ_query_param_uint64 (&ulimit),
145 0 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_ALL ==
146 : investigation_only)),
147 0 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_YES ==
148 : investigation_only)),
149 0 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_ALL ==
150 : open_only)),
151 0 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_YES ==
152 : open_only)),
153 0 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_ALL ==
154 : high_risk_only)),
155 0 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_YES ==
156 : high_risk_only)),
157 : GNUNET_PQ_query_param_end
158 : };
159 0 : struct KycAccountResultContext ctx = {
160 : .cb = cb,
161 : .cb_cls = cb_cls,
162 : .pg = pg,
163 : .status = GNUNET_OK
164 : };
165 : enum GNUNET_DB_QueryStatus qs;
166 0 : const char *stmt = (limit > 0)
167 : ? "select_kyc_accounts_inc"
168 : : "select_kyc_accounts_dec";
169 :
170 0 : PREPARE (pg,
171 : "select_kyc_accounts_inc",
172 : "SELECT"
173 : " kt.kyc_target_serial_id"
174 : ",kt.h_normalized_payto AS h_payto"
175 : ",kt.open_time"
176 : ",kt.close_time"
177 : ",lo.jproperties ->> 'FILE_NOTE' AS comments"
178 : ",lo.jproperties ->> 'open_date' AS open_time"
179 : ",COALESCE(lo.to_investigate,FALSE) AS to_investigate"
180 : ",COALESCE((lo.jproperties ->> 'HIGH_RISK_CUSTOMER')::bool,FALSE) AS high_risk"
181 : ",wt.payto_uri"
182 : " FROM kyc_targets kt"
183 : " JOIN wire_targets wt"
184 : " ON (wt.h_normalized_payto = kt.h_normalized_payto)"
185 : " LEFT JOIN legitimization_outcomes lo"
186 : " ON (lo.h_payto = kt.h_normalized_payto)"
187 : " WHERE (kyc_target_serial_id > $1)"
188 : // select most recent outcomes only
189 : " AND COALESCE (lo.is_active, TRUE)"
190 : " AND ($3 OR (COALESCE(lo.to_investigate,FALSE) = $4))"
191 : // Account is open if we had an AML outcome
192 : " AND ($5 OR ((lo.outcome_serial_id IS NULL) = $6))"
193 : " AND ($7 OR ((COALESCE((lo.jproperties ->>'high_risk')::bool,FALSE) = $8)))"
194 : " ORDER BY kt.kyc_target_serial_id ASC"
195 : " LIMIT $2");
196 0 : PREPARE (pg,
197 : "select_kyc_accounts_dec",
198 : "SELECT"
199 : " kt.kyc_target_serial_id"
200 : ",kt.h_normalized_payto AS h_payto"
201 : ",kt.open_time"
202 : ",kt.close_time"
203 : ",lo.jproperties ->> 'FILE_NOTE' AS comments"
204 : ",lo.jproperties ->> 'open_date' AS open_time"
205 : ",COALESCE(lo.to_investigate,FALSE) AS to_investigate"
206 : ",COALESCE((lo.jproperties ->> 'HIGH_RISK_CUSTOMER')::bool,FALSE) AS high_risk"
207 : ",wt.payto_uri"
208 : " FROM kyc_targets kt"
209 : " LEFT JOIN legitimization_outcomes lo"
210 : " ON (lo.h_payto = kt.h_normalized_payto)"
211 : " LEFT JOIN LATERAL ("
212 : " SELECT payto_uri"
213 : " FROM wire_targets"
214 : " WHERE h_normalized_payto = kt.h_normalized_payto"
215 : " ORDER BY wire_target_serial_id DESC"
216 : " LIMIT 1"
217 : " ) wt ON true"
218 : " WHERE (kyc_target_serial_id < $1)"
219 : // select most recent outcomes only
220 : " AND COALESCE (lo.is_active, TRUE)"
221 : " AND ($3 OR (COALESCE(lo.to_investigate,FALSE) = $4))"
222 : // Account is open if we had an AML outcome
223 : " AND ($5 OR ((lo.outcome_serial_id IS NULL) = $6))"
224 : " AND ($7 OR ((COALESCE((lo.jproperties ->>'high_risk')::bool,FALSE) = $8)))"
225 : " ORDER BY kt.kyc_target_serial_id DESC"
226 : " LIMIT $2");
227 0 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
228 : stmt,
229 : params,
230 : &handle_kyc_account_cb,
231 : &ctx);
232 0 : if (GNUNET_OK != ctx.status)
233 0 : return GNUNET_DB_STATUS_HARD_ERROR;
234 0 : return qs;
235 : }
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