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_select_aml_decisions.c
18 : * @brief Implementation of the select_aml_decisions 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_aml_decisions.h"
26 : #include "pg_helper.h"
27 :
28 :
29 : /**
30 : * Closure for #handle_aml_result.
31 : */
32 : struct AmlProcessResultContext
33 : {
34 : /**
35 : * Function to call on each result.
36 : */
37 : TALER_EXCHANGEDB_AmlDecisionCallback 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 #GNUNET_SYSERR on serious errors.
51 : */
52 : enum GNUNET_GenericReturnValue status;
53 : };
54 :
55 :
56 : /**
57 : * Function to be called with the results of a SELECT statement
58 : * that has returned @a num_results results. Helper function
59 : * for #TEH_PG_select_aml_decisions().
60 : *
61 : * @param cls closure of type `struct AmlProcessResultContext *`
62 : * @param result the postgres result
63 : * @param num_results the number of results in @a result
64 : */
65 : static void
66 3 : handle_aml_result (void *cls,
67 : PGresult *result,
68 : unsigned int num_results)
69 : {
70 3 : struct AmlProcessResultContext *ctx = cls;
71 :
72 5 : for (unsigned int i = 0; i<num_results; i++)
73 : {
74 : struct TALER_NormalizedPaytoHashP h_payto;
75 : uint64_t rowid;
76 2 : char *justification = NULL;
77 : struct GNUNET_TIME_Timestamp decision_time;
78 : struct GNUNET_TIME_Absolute expiration_time;
79 2 : json_t *jproperties = NULL;
80 : bool is_wallet;
81 : bool to_investigate;
82 : bool is_active;
83 : json_t *account_rules;
84 2 : struct GNUNET_PQ_ResultSpec rs[] = {
85 2 : GNUNET_PQ_result_spec_uint64 ("outcome_serial_id",
86 : &rowid),
87 2 : GNUNET_PQ_result_spec_auto_from_type ("h_payto",
88 : &h_payto),
89 2 : GNUNET_PQ_result_spec_bool ("is_wallet",
90 : &is_wallet),
91 2 : GNUNET_PQ_result_spec_allow_null (
92 : GNUNET_PQ_result_spec_string ("justification",
93 : &justification),
94 : NULL),
95 2 : GNUNET_PQ_result_spec_timestamp ("decision_time",
96 : &decision_time),
97 2 : GNUNET_PQ_result_spec_absolute_time ("expiration_time",
98 : &expiration_time),
99 2 : GNUNET_PQ_result_spec_allow_null (
100 : TALER_PQ_result_spec_json ("jproperties",
101 : &jproperties),
102 : NULL),
103 2 : TALER_PQ_result_spec_json ("jnew_rules",
104 : &account_rules),
105 2 : GNUNET_PQ_result_spec_bool ("to_investigate",
106 : &to_investigate),
107 2 : GNUNET_PQ_result_spec_bool ("is_active",
108 : &is_active),
109 : GNUNET_PQ_result_spec_end
110 : };
111 :
112 2 : if (GNUNET_OK !=
113 2 : GNUNET_PQ_extract_result (result,
114 : rs,
115 : i))
116 : {
117 0 : GNUNET_break (0);
118 0 : ctx->status = GNUNET_SYSERR;
119 0 : return;
120 : }
121 2 : if (GNUNET_TIME_absolute_is_past (expiration_time))
122 0 : is_active = false;
123 2 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
124 : "Returning AML decisions for `%s' (%s)\n",
125 : TALER_B2S (&h_payto),
126 : is_wallet
127 : ? "wallet"
128 : : "account");
129 2 : ctx->cb (ctx->cb_cls,
130 : rowid,
131 : justification,
132 : &h_payto,
133 : decision_time,
134 : expiration_time,
135 : jproperties,
136 : to_investigate,
137 : is_active,
138 : is_wallet,
139 : account_rules);
140 2 : GNUNET_PQ_cleanup_result (rs);
141 : }
142 : }
143 :
144 :
145 : enum GNUNET_DB_QueryStatus
146 3 : TEH_PG_select_aml_decisions (
147 : void *cls,
148 : const struct TALER_NormalizedPaytoHashP *h_payto,
149 : enum TALER_EXCHANGE_YesNoAll investigation_only,
150 : enum TALER_EXCHANGE_YesNoAll active_only,
151 : uint64_t offset,
152 : int64_t limit,
153 : TALER_EXCHANGEDB_AmlDecisionCallback cb,
154 : void *cb_cls)
155 : {
156 3 : struct PostgresClosure *pg = cls;
157 3 : uint64_t ulimit = (limit > 0) ? limit : -limit;
158 3 : struct GNUNET_PQ_QueryParam params[] = {
159 3 : GNUNET_PQ_query_param_bool (NULL == h_payto),
160 : NULL == h_payto
161 1 : ? GNUNET_PQ_query_param_null ()
162 3 : : GNUNET_PQ_query_param_auto_from_type (h_payto),
163 3 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_ALL ==
164 : investigation_only)),
165 3 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_YES ==
166 : investigation_only)),
167 3 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_ALL ==
168 : active_only)),
169 3 : GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_YES ==
170 : active_only)),
171 3 : GNUNET_PQ_query_param_uint64 (&offset),
172 3 : GNUNET_PQ_query_param_uint64 (&ulimit),
173 : GNUNET_PQ_query_param_end
174 : };
175 3 : struct AmlProcessResultContext ctx = {
176 : .cb = cb,
177 : .cb_cls = cb_cls,
178 : .pg = pg,
179 : .status = GNUNET_OK
180 : };
181 : enum GNUNET_DB_QueryStatus qs;
182 3 : const char *stmt = (limit > 0)
183 : ? "select_aml_decisions_inc"
184 : : "select_aml_decisions_dec";
185 :
186 3 : PREPARE (pg,
187 : "select_aml_decisions_inc",
188 : "SELECT"
189 : " lo.outcome_serial_id"
190 : ",lo.h_payto"
191 : ",ah.justification"
192 : ",lo.decision_time"
193 : ",lo.expiration_time"
194 : ",lo.jproperties"
195 : ",lo.to_investigate"
196 : ",lo.is_active"
197 : ",lo.jnew_rules"
198 : ",kt.is_wallet"
199 : " FROM legitimization_outcomes lo"
200 : " JOIN kyc_targets kt"
201 : " ON (lo.h_payto = kt.h_normalized_payto)"
202 : " LEFT JOIN aml_history ah"
203 : " USING (outcome_serial_id)"
204 : " WHERE (outcome_serial_id > $7)"
205 : " AND ($1 OR (lo.h_payto = $2))"
206 : " AND ($3 OR (lo.to_investigate = $4))"
207 : " AND ($5 OR (lo.is_active = $6))"
208 : " ORDER BY lo.outcome_serial_id ASC"
209 : " LIMIT $8");
210 3 : PREPARE (pg,
211 : "select_aml_decisions_dec",
212 : "SELECT"
213 : " lo.outcome_serial_id"
214 : ",lo.h_payto"
215 : ",ah.justification"
216 : ",lo.decision_time"
217 : ",lo.expiration_time"
218 : ",lo.jproperties"
219 : ",lo.to_investigate"
220 : ",lo.is_active"
221 : ",lo.jnew_rules"
222 : ",kt.is_wallet"
223 : " FROM legitimization_outcomes lo"
224 : " JOIN kyc_targets kt"
225 : " ON (lo.h_payto = kt.h_normalized_payto)"
226 : " LEFT JOIN aml_history ah"
227 : " USING (outcome_serial_id)"
228 : " WHERE lo.outcome_serial_id < $7"
229 : " AND ($1 OR (lo.h_payto = $2))"
230 : " AND ($3 OR (lo.to_investigate = $4))"
231 : " AND ($5 OR (lo.is_active = $6))"
232 : " ORDER BY lo.outcome_serial_id DESC"
233 : " LIMIT $8");
234 3 : qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
235 : stmt,
236 : params,
237 : &handle_aml_result,
238 : &ctx);
239 3 : if (GNUNET_OK != ctx.status)
240 0 : return GNUNET_DB_STATUS_HARD_ERROR;
241 3 : return qs;
242 : }
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