Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2020-2026 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
15 : <http://www.gnu.org/licenses/>
16 : */
17 : /**
18 : * @file lib/exchange_api_post-management-wire-fee.c
19 : * @brief functions to set wire fees at an exchange
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/taler_json_lib.h"
23 : #include <gnunet/gnunet_curl_lib.h>
24 : #include <microhttpd.h>
25 : #include "taler/exchange/post-management-wire-fee.h"
26 : #include "exchange_api_curl_defaults.h"
27 : #include "taler/taler_curl_lib.h"
28 :
29 :
30 : struct TALER_EXCHANGE_PostManagementWireFeesHandle
31 : {
32 :
33 : /**
34 : * The base URL for this request.
35 : */
36 : char *base_url;
37 :
38 : /**
39 : * The full URL for this request, set during _start.
40 : */
41 : char *url;
42 :
43 : /**
44 : * Minor context that holds body and headers.
45 : */
46 : struct TALER_CURL_PostContext post_ctx;
47 :
48 : /**
49 : * Handle for the request.
50 : */
51 : struct GNUNET_CURL_Job *job;
52 :
53 : /**
54 : * Function to call with the result.
55 : */
56 : TALER_EXCHANGE_PostManagementWireFeesCallback cb;
57 :
58 : /**
59 : * Closure for @a cb.
60 : */
61 : TALER_EXCHANGE_POST_MANAGEMENT_WIRE_FEES_RESULT_CLOSURE *cb_cls;
62 :
63 : /**
64 : * Reference to the execution context.
65 : */
66 : struct GNUNET_CURL_Context *ctx;
67 :
68 : /**
69 : * Wire method these fees are for.
70 : */
71 : char *wire_method;
72 :
73 : /**
74 : * Start of validity period.
75 : */
76 : struct GNUNET_TIME_Timestamp validity_start;
77 :
78 : /**
79 : * End of validity period.
80 : */
81 : struct GNUNET_TIME_Timestamp validity_end;
82 :
83 : /**
84 : * Wire fees for this time period.
85 : */
86 : struct TALER_WireFeeSet fees;
87 :
88 : /**
89 : * Signature affirming the wire fees.
90 : */
91 : struct TALER_MasterSignatureP master_sig;
92 :
93 : };
94 :
95 :
96 : /**
97 : * Function called when we're done processing the
98 : * HTTP POST /management/wire-fees request.
99 : *
100 : * @param cls the `struct TALER_EXCHANGE_PostManagementWireFeesHandle`
101 : * @param response_code HTTP response code, 0 on error
102 : * @param response response body, NULL if not in JSON
103 : */
104 : static void
105 44 : handle_wire_fees_finished (void *cls,
106 : long response_code,
107 : const void *response)
108 : {
109 44 : struct TALER_EXCHANGE_PostManagementWireFeesHandle *pmwfh = cls;
110 44 : const json_t *json = response;
111 44 : struct TALER_EXCHANGE_PostManagementWireFeesResponse res = {
112 44 : .hr.http_status = (unsigned int) response_code,
113 : .hr.reply = json
114 : };
115 :
116 44 : pmwfh->job = NULL;
117 44 : switch (response_code)
118 : {
119 40 : case MHD_HTTP_NO_CONTENT:
120 40 : break;
121 2 : case MHD_HTTP_FORBIDDEN:
122 2 : res.hr.ec = TALER_JSON_get_error_code (json);
123 2 : res.hr.hint = TALER_JSON_get_error_hint (json);
124 2 : break;
125 2 : case MHD_HTTP_CONFLICT:
126 2 : res.hr.ec = TALER_JSON_get_error_code (json);
127 2 : res.hr.hint = TALER_JSON_get_error_hint (json);
128 2 : break;
129 0 : default:
130 : /* unexpected response code */
131 0 : GNUNET_break_op (0);
132 0 : res.hr.ec = TALER_JSON_get_error_code (json);
133 0 : res.hr.hint = TALER_JSON_get_error_hint (json);
134 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
135 : "Unexpected response code %u/%d for exchange management set wire fee\n",
136 : (unsigned int) response_code,
137 : (int) res.hr.ec);
138 0 : break;
139 : }
140 44 : if (NULL != pmwfh->cb)
141 : {
142 44 : pmwfh->cb (pmwfh->cb_cls,
143 : &res);
144 44 : pmwfh->cb = NULL;
145 : }
146 44 : TALER_EXCHANGE_post_management_wire_fees_cancel (pmwfh);
147 44 : }
148 :
149 :
150 : struct TALER_EXCHANGE_PostManagementWireFeesHandle *
151 44 : TALER_EXCHANGE_post_management_wire_fees_create (
152 : struct GNUNET_CURL_Context *ctx,
153 : const char *exchange_base_url,
154 : const char *wire_method,
155 : struct GNUNET_TIME_Timestamp validity_start,
156 : struct GNUNET_TIME_Timestamp validity_end,
157 : const struct TALER_WireFeeSet *fees,
158 : const struct TALER_MasterSignatureP *master_sig)
159 : {
160 : struct TALER_EXCHANGE_PostManagementWireFeesHandle *pmwfh;
161 :
162 44 : pmwfh = GNUNET_new (struct TALER_EXCHANGE_PostManagementWireFeesHandle);
163 44 : pmwfh->ctx = ctx;
164 44 : pmwfh->base_url = GNUNET_strdup (exchange_base_url);
165 44 : pmwfh->wire_method = GNUNET_strdup (wire_method);
166 44 : pmwfh->validity_start = validity_start;
167 44 : pmwfh->validity_end = validity_end;
168 44 : pmwfh->fees = *fees;
169 44 : pmwfh->master_sig = *master_sig;
170 44 : return pmwfh;
171 : }
172 :
173 :
174 : enum TALER_ErrorCode
175 44 : TALER_EXCHANGE_post_management_wire_fees_start (
176 : struct TALER_EXCHANGE_PostManagementWireFeesHandle *pmwfh,
177 : TALER_EXCHANGE_PostManagementWireFeesCallback cb,
178 : TALER_EXCHANGE_POST_MANAGEMENT_WIRE_FEES_RESULT_CLOSURE *cb_cls)
179 : {
180 : CURL *eh;
181 : json_t *body;
182 :
183 44 : pmwfh->cb = cb;
184 44 : pmwfh->cb_cls = cb_cls;
185 44 : pmwfh->url = TALER_url_join (pmwfh->base_url,
186 : "management/wire-fee",
187 : NULL);
188 44 : if (NULL == pmwfh->url)
189 : {
190 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
191 : "Could not construct request URL.\n");
192 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
193 : }
194 44 : body = GNUNET_JSON_PACK (
195 : GNUNET_JSON_pack_string ("wire_method",
196 : pmwfh->wire_method),
197 : GNUNET_JSON_pack_data_auto ("master_sig",
198 : &pmwfh->master_sig),
199 : GNUNET_JSON_pack_timestamp ("fee_start",
200 : pmwfh->validity_start),
201 : GNUNET_JSON_pack_timestamp ("fee_end",
202 : pmwfh->validity_end),
203 : TALER_JSON_pack_amount ("closing_fee",
204 : &pmwfh->fees.closing),
205 : TALER_JSON_pack_amount ("wire_fee",
206 : &pmwfh->fees.wire));
207 44 : eh = TALER_EXCHANGE_curl_easy_get_ (pmwfh->url);
208 88 : if ( (NULL == eh) ||
209 : (GNUNET_OK !=
210 44 : TALER_curl_easy_post (&pmwfh->post_ctx,
211 : eh,
212 : body)) )
213 : {
214 0 : GNUNET_break (0);
215 0 : if (NULL != eh)
216 0 : curl_easy_cleanup (eh);
217 0 : json_decref (body);
218 0 : GNUNET_free (pmwfh->url);
219 0 : pmwfh->url = NULL;
220 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
221 : }
222 44 : json_decref (body);
223 44 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
224 : "Requesting URL '%s'\n",
225 : pmwfh->url);
226 88 : pmwfh->job = GNUNET_CURL_job_add2 (pmwfh->ctx,
227 : eh,
228 44 : pmwfh->post_ctx.headers,
229 : &handle_wire_fees_finished,
230 : pmwfh);
231 44 : if (NULL == pmwfh->job)
232 : {
233 0 : TALER_curl_easy_post_finished (&pmwfh->post_ctx);
234 0 : GNUNET_free (pmwfh->url);
235 0 : pmwfh->url = NULL;
236 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
237 : }
238 44 : return TALER_EC_NONE;
239 : }
240 :
241 :
242 : void
243 44 : TALER_EXCHANGE_post_management_wire_fees_cancel (
244 : struct TALER_EXCHANGE_PostManagementWireFeesHandle *pmwfh)
245 : {
246 44 : if (NULL != pmwfh->job)
247 : {
248 0 : GNUNET_CURL_job_cancel (pmwfh->job);
249 0 : pmwfh->job = NULL;
250 : }
251 44 : TALER_curl_easy_post_finished (&pmwfh->post_ctx);
252 44 : GNUNET_free (pmwfh->wire_method);
253 44 : GNUNET_free (pmwfh->url);
254 44 : GNUNET_free (pmwfh->base_url);
255 44 : GNUNET_free (pmwfh);
256 44 : }
257 :
258 :
259 : /* end of exchange_api_post-management-wire-fee.c */
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