Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2023-2026 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-partners.c
19 : * @brief functions to add a partner 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-partners.h"
26 : #include "exchange_api_curl_defaults.h"
27 : #include "taler/taler_curl_lib.h"
28 :
29 :
30 : struct TALER_EXCHANGE_PostManagementPartnersHandle
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_PostManagementPartnersCallback cb;
57 :
58 : /**
59 : * Closure for @a cb.
60 : */
61 : TALER_EXCHANGE_POST_MANAGEMENT_PARTNERS_RESULT_CLOSURE *cb_cls;
62 :
63 : /**
64 : * Reference to the execution context.
65 : */
66 : struct GNUNET_CURL_Context *ctx;
67 :
68 : /**
69 : * Offline signing key of the partner.
70 : */
71 : struct TALER_MasterPublicKeyP partner_pub;
72 :
73 : /**
74 : * Validity period start.
75 : */
76 : struct GNUNET_TIME_Timestamp start_date;
77 :
78 : /**
79 : * Validity period end.
80 : */
81 : struct GNUNET_TIME_Timestamp end_date;
82 :
83 : /**
84 : * How often will we do wad transfers to this partner.
85 : */
86 : struct GNUNET_TIME_Relative wad_frequency;
87 :
88 : /**
89 : * Wad fee to this partner.
90 : */
91 : struct TALER_Amount wad_fee;
92 :
93 : /**
94 : * Base URL of the partner exchange.
95 : */
96 : char *partner_base_url;
97 :
98 : /**
99 : * Signature.
100 : */
101 : struct TALER_MasterSignatureP master_sig;
102 :
103 : };
104 :
105 :
106 : /**
107 : * Function called when we're done processing the
108 : * HTTP POST /management/partners request.
109 : *
110 : * @param cls the `struct TALER_EXCHANGE_PostManagementPartnersHandle`
111 : * @param response_code HTTP response code, 0 on error
112 : * @param response response body, NULL if not in JSON
113 : */
114 : static void
115 0 : handle_partners_finished (void *cls,
116 : long response_code,
117 : const void *response)
118 : {
119 0 : struct TALER_EXCHANGE_PostManagementPartnersHandle *pmph = cls;
120 0 : const json_t *json = response;
121 0 : struct TALER_EXCHANGE_PostManagementPartnersResponse res = {
122 0 : .hr.http_status = (unsigned int) response_code,
123 : .hr.reply = json
124 : };
125 :
126 0 : pmph->job = NULL;
127 0 : switch (response_code)
128 : {
129 0 : case 0:
130 : /* no reply */
131 0 : res.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
132 0 : res.hr.hint = "server offline?";
133 0 : break;
134 0 : case MHD_HTTP_NO_CONTENT:
135 0 : break;
136 0 : case MHD_HTTP_FORBIDDEN:
137 0 : res.hr.ec = TALER_JSON_get_error_code (json);
138 0 : res.hr.hint = TALER_JSON_get_error_hint (json);
139 0 : break;
140 0 : case MHD_HTTP_CONFLICT:
141 0 : res.hr.ec = TALER_JSON_get_error_code (json);
142 0 : res.hr.hint = TALER_JSON_get_error_hint (json);
143 0 : break;
144 0 : default:
145 : /* unexpected response code */
146 0 : GNUNET_break_op (0);
147 0 : res.hr.ec = TALER_JSON_get_error_code (json);
148 0 : res.hr.hint = TALER_JSON_get_error_hint (json);
149 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
150 : "Unexpected response code %u/%d for adding exchange partner\n",
151 : (unsigned int) response_code,
152 : (int) res.hr.ec);
153 0 : break;
154 : }
155 0 : if (NULL != pmph->cb)
156 : {
157 0 : pmph->cb (pmph->cb_cls,
158 : &res);
159 0 : pmph->cb = NULL;
160 : }
161 0 : TALER_EXCHANGE_post_management_partners_cancel (pmph);
162 0 : }
163 :
164 :
165 : struct TALER_EXCHANGE_PostManagementPartnersHandle *
166 0 : TALER_EXCHANGE_post_management_partners_create (
167 : struct GNUNET_CURL_Context *ctx,
168 : const char *url,
169 : const struct TALER_MasterPublicKeyP *partner_pub,
170 : struct GNUNET_TIME_Timestamp start_date,
171 : struct GNUNET_TIME_Timestamp end_date,
172 : struct GNUNET_TIME_Relative wad_frequency,
173 : const struct TALER_Amount *wad_fee,
174 : const char *partner_base_url,
175 : const struct TALER_MasterSignatureP *master_sig)
176 : {
177 : struct TALER_EXCHANGE_PostManagementPartnersHandle *pmph;
178 :
179 0 : pmph = GNUNET_new (struct TALER_EXCHANGE_PostManagementPartnersHandle);
180 0 : pmph->ctx = ctx;
181 0 : pmph->base_url = GNUNET_strdup (url);
182 0 : pmph->partner_pub = *partner_pub;
183 0 : pmph->start_date = start_date;
184 0 : pmph->end_date = end_date;
185 0 : pmph->wad_frequency = wad_frequency;
186 0 : pmph->wad_fee = *wad_fee;
187 0 : pmph->partner_base_url = GNUNET_strdup (partner_base_url);
188 0 : pmph->master_sig = *master_sig;
189 0 : return pmph;
190 : }
191 :
192 :
193 : enum TALER_ErrorCode
194 0 : TALER_EXCHANGE_post_management_partners_start (
195 : struct TALER_EXCHANGE_PostManagementPartnersHandle *pmph,
196 : TALER_EXCHANGE_PostManagementPartnersCallback cb,
197 : TALER_EXCHANGE_POST_MANAGEMENT_PARTNERS_RESULT_CLOSURE *cb_cls)
198 : {
199 : CURL *eh;
200 : json_t *body;
201 :
202 0 : pmph->cb = cb;
203 0 : pmph->cb_cls = cb_cls;
204 0 : pmph->url = TALER_url_join (pmph->base_url,
205 : "management/partners",
206 : NULL);
207 0 : if (NULL == pmph->url)
208 : {
209 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
210 : "Could not construct request URL.\n");
211 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
212 : }
213 0 : body = GNUNET_JSON_PACK (
214 : GNUNET_JSON_pack_string ("partner_base_url",
215 : pmph->partner_base_url),
216 : GNUNET_JSON_pack_timestamp ("start_date",
217 : pmph->start_date),
218 : GNUNET_JSON_pack_timestamp ("end_date",
219 : pmph->end_date),
220 : GNUNET_JSON_pack_time_rel ("wad_frequency",
221 : pmph->wad_frequency),
222 : GNUNET_JSON_pack_data_auto ("partner_pub",
223 : &pmph->partner_pub),
224 : GNUNET_JSON_pack_data_auto ("master_sig",
225 : &pmph->master_sig),
226 : TALER_JSON_pack_amount ("wad_fee",
227 : &pmph->wad_fee));
228 0 : eh = TALER_EXCHANGE_curl_easy_get_ (pmph->url);
229 0 : if ( (NULL == eh) ||
230 : (GNUNET_OK !=
231 0 : TALER_curl_easy_post (&pmph->post_ctx,
232 : eh,
233 : body)) )
234 : {
235 0 : GNUNET_break (0);
236 0 : if (NULL != eh)
237 0 : curl_easy_cleanup (eh);
238 0 : json_decref (body);
239 0 : GNUNET_free (pmph->url);
240 0 : pmph->url = NULL;
241 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
242 : }
243 0 : json_decref (body);
244 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
245 : "Requesting URL '%s'\n",
246 : pmph->url);
247 0 : pmph->job = GNUNET_CURL_job_add2 (pmph->ctx,
248 : eh,
249 0 : pmph->post_ctx.headers,
250 : &handle_partners_finished,
251 : pmph);
252 0 : if (NULL == pmph->job)
253 : {
254 0 : TALER_curl_easy_post_finished (&pmph->post_ctx);
255 0 : GNUNET_free (pmph->url);
256 0 : pmph->url = NULL;
257 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
258 : }
259 0 : return TALER_EC_NONE;
260 : }
261 :
262 :
263 : void
264 0 : TALER_EXCHANGE_post_management_partners_cancel (
265 : struct TALER_EXCHANGE_PostManagementPartnersHandle *pmph)
266 : {
267 0 : if (NULL != pmph->job)
268 : {
269 0 : GNUNET_CURL_job_cancel (pmph->job);
270 0 : pmph->job = NULL;
271 : }
272 0 : TALER_curl_easy_post_finished (&pmph->post_ctx);
273 0 : GNUNET_free (pmph->partner_base_url);
274 0 : GNUNET_free (pmph->url);
275 0 : GNUNET_free (pmph->base_url);
276 0 : GNUNET_free (pmph);
277 0 : }
278 :
279 :
280 : /* end of exchange_api_post-management-partners.c */
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