Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2024-2026 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify
6 : it under the terms of the GNU Lesser General Public License as
7 : published by the Free Software Foundation; either version 2.1,
8 : or (at your option) any later version.
9 :
10 : TALER is distributed in the hope that it will be useful,
11 : but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 : GNU Lesser General Public License for more details.
14 :
15 : You should have received a copy of the GNU Lesser General
16 : Public License along with TALER; see the file COPYING.LGPL.
17 : If not, see <http://www.gnu.org/licenses/>
18 : */
19 : /**
20 : * @file merchant_api_post-private-donau.c
21 : * @brief Implementation of the POST /private/donau request
22 : * @author Christian Grothoff
23 : */
24 : #include "taler/platform.h"
25 : #include <curl/curl.h>
26 : #include <jansson.h>
27 : #include <microhttpd.h> /* just for HTTP status codes */
28 : #include <gnunet/gnunet_util_lib.h>
29 : #include <gnunet/gnunet_curl_lib.h>
30 : #include <taler/merchant/post-private-donau.h>
31 : #include "merchant_api_curl_defaults.h"
32 : #include "merchant_api_common.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 :
36 :
37 : /**
38 : * Handle for a POST /private/donau operation.
39 : */
40 : struct TALER_MERCHANT_PostPrivateDonauHandle
41 : {
42 : /**
43 : * Base URL of the merchant backend.
44 : */
45 : char *base_url;
46 :
47 : /**
48 : * The full URL for this request.
49 : */
50 : char *url;
51 :
52 : /**
53 : * Handle for the request.
54 : */
55 : struct GNUNET_CURL_Job *job;
56 :
57 : /**
58 : * Function to call with the result.
59 : */
60 : TALER_MERCHANT_PostPrivateDonauCallback cb;
61 :
62 : /**
63 : * Closure for @a cb.
64 : */
65 : TALER_MERCHANT_POST_PRIVATE_DONAU_RESULT_CLOSURE *cb_cls;
66 :
67 : /**
68 : * Reference to the execution context.
69 : */
70 : struct GNUNET_CURL_Context *ctx;
71 :
72 : /**
73 : * Minor context that holds body and headers.
74 : */
75 : struct TALER_CURL_PostContext post_ctx;
76 :
77 : /**
78 : * Charity information to register.
79 : */
80 : struct TALER_MERCHANT_Charity charity;
81 :
82 : /**
83 : * Charity URL (owned copy).
84 : */
85 : char *charity_url;
86 : };
87 :
88 :
89 : /**
90 : * Function called when we're done processing the
91 : * HTTP POST /private/donau request.
92 : *
93 : * @param cls the `struct TALER_MERCHANT_PostPrivateDonauHandle`
94 : * @param response_code HTTP response code, 0 on error
95 : * @param response response body, NULL if not in JSON
96 : */
97 : static void
98 0 : handle_post_donau_finished (void *cls,
99 : long response_code,
100 : const void *response)
101 : {
102 0 : struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh = cls;
103 0 : const json_t *json = response;
104 0 : struct TALER_MERCHANT_PostPrivateDonauResponse pdr = {
105 0 : .hr.http_status = (unsigned int) response_code,
106 : .hr.reply = json
107 : };
108 :
109 0 : ppdh->job = NULL;
110 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
111 : "POST /private/donau completed with response code %u\n",
112 : (unsigned int) response_code);
113 0 : switch (response_code)
114 : {
115 0 : case 0:
116 0 : pdr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
117 0 : break;
118 0 : case MHD_HTTP_ACCEPTED:
119 0 : if (GNUNET_OK !=
120 0 : TALER_MERCHANT_parse_mfa_challenge_response_ (
121 : json,
122 : &pdr.details.accepted))
123 : {
124 0 : GNUNET_break_op (0);
125 0 : pdr.hr.http_status = 0;
126 0 : pdr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
127 : }
128 0 : break;
129 0 : case MHD_HTTP_NO_CONTENT:
130 0 : break;
131 0 : case MHD_HTTP_BAD_REQUEST:
132 0 : pdr.hr.ec = TALER_JSON_get_error_code (json);
133 0 : pdr.hr.hint = TALER_JSON_get_error_hint (json);
134 0 : break;
135 0 : case MHD_HTTP_CONFLICT:
136 0 : pdr.hr.ec = TALER_JSON_get_error_code (json);
137 0 : pdr.hr.hint = TALER_JSON_get_error_hint (json);
138 0 : break;
139 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
140 0 : pdr.hr.ec = TALER_JSON_get_error_code (json);
141 0 : pdr.hr.hint = TALER_JSON_get_error_hint (json);
142 0 : break;
143 0 : case MHD_HTTP_BAD_GATEWAY:
144 0 : pdr.hr.ec = TALER_JSON_get_error_code (json);
145 0 : pdr.hr.hint = TALER_JSON_get_error_hint (json);
146 0 : break;
147 0 : default:
148 0 : TALER_MERCHANT_parse_error_details_ (json,
149 : response_code,
150 : &pdr.hr);
151 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
152 : "Unexpected response code %u/%d\n",
153 : (unsigned int) response_code,
154 : (int) pdr.hr.ec);
155 0 : GNUNET_break_op (0);
156 0 : break;
157 : }
158 0 : ppdh->cb (ppdh->cb_cls,
159 : &pdr);
160 0 : if (MHD_HTTP_ACCEPTED == response_code)
161 0 : TALER_MERCHANT_mfa_challenge_response_free (
162 : &pdr.details.accepted);
163 0 : TALER_MERCHANT_post_private_donau_cancel (ppdh);
164 0 : }
165 :
166 :
167 : struct TALER_MERCHANT_PostPrivateDonauHandle *
168 0 : TALER_MERCHANT_post_private_donau_create (
169 : struct GNUNET_CURL_Context *ctx,
170 : const char *url,
171 : const struct TALER_MERCHANT_Charity *charity)
172 : {
173 : struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh;
174 :
175 0 : ppdh = GNUNET_new (struct TALER_MERCHANT_PostPrivateDonauHandle);
176 0 : ppdh->ctx = ctx;
177 0 : ppdh->base_url = GNUNET_strdup (url);
178 0 : ppdh->charity_url = GNUNET_strdup (charity->charity_url);
179 0 : ppdh->charity.charity_url = ppdh->charity_url;
180 0 : ppdh->charity.charity_id = charity->charity_id;
181 0 : return ppdh;
182 : }
183 :
184 :
185 : enum GNUNET_GenericReturnValue
186 0 : TALER_MERCHANT_post_private_donau_set_options_ (
187 : struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh,
188 : unsigned int num_options,
189 : const struct TALER_MERCHANT_PostPrivateDonauOptionValue *options)
190 : {
191 0 : for (unsigned int i = 0; i < num_options; i++)
192 : {
193 0 : switch (options[i].option)
194 : {
195 0 : case TALER_MERCHANT_POST_PRIVATE_DONAU_OPTION_END:
196 0 : return GNUNET_OK;
197 0 : default:
198 0 : GNUNET_break (0);
199 0 : return GNUNET_SYSERR;
200 : }
201 : }
202 0 : return GNUNET_OK;
203 : }
204 :
205 :
206 : enum TALER_ErrorCode
207 0 : TALER_MERCHANT_post_private_donau_start (
208 : struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh,
209 : TALER_MERCHANT_PostPrivateDonauCallback cb,
210 : TALER_MERCHANT_POST_PRIVATE_DONAU_RESULT_CLOSURE *cb_cls)
211 : {
212 : json_t *req_obj;
213 : CURL *eh;
214 :
215 0 : ppdh->cb = cb;
216 0 : ppdh->cb_cls = cb_cls;
217 0 : ppdh->url = TALER_url_join (ppdh->base_url,
218 : "private/donau",
219 : NULL);
220 0 : if (NULL == ppdh->url)
221 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
222 0 : req_obj = GNUNET_JSON_PACK (
223 : GNUNET_JSON_pack_string ("donau_url",
224 : ppdh->charity.charity_url),
225 : GNUNET_JSON_pack_uint64 ("charity_id",
226 : ppdh->charity.charity_id)
227 : );
228 0 : eh = TALER_MERCHANT_curl_easy_get_ (ppdh->url);
229 0 : if ( (NULL == eh) ||
230 : (GNUNET_OK !=
231 0 : TALER_curl_easy_post (&ppdh->post_ctx,
232 : eh,
233 : req_obj)) )
234 : {
235 0 : GNUNET_break (0);
236 0 : json_decref (req_obj);
237 0 : if (NULL != eh)
238 0 : curl_easy_cleanup (eh);
239 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
240 : }
241 0 : json_decref (req_obj);
242 0 : ppdh->job = GNUNET_CURL_job_add2 (ppdh->ctx,
243 : eh,
244 0 : ppdh->post_ctx.headers,
245 : &handle_post_donau_finished,
246 : ppdh);
247 0 : if (NULL == ppdh->job)
248 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
249 0 : return TALER_EC_NONE;
250 : }
251 :
252 :
253 : void
254 0 : TALER_MERCHANT_post_private_donau_cancel (
255 : struct TALER_MERCHANT_PostPrivateDonauHandle *ppdh)
256 : {
257 0 : if (NULL != ppdh->job)
258 : {
259 0 : GNUNET_CURL_job_cancel (ppdh->job);
260 0 : ppdh->job = NULL;
261 : }
262 0 : TALER_curl_easy_post_finished (&ppdh->post_ctx);
263 0 : GNUNET_free (ppdh->charity_url);
264 0 : GNUNET_free (ppdh->url);
265 0 : GNUNET_free (ppdh->base_url);
266 0 : GNUNET_free (ppdh);
267 0 : }
268 :
269 :
270 : /* end of merchant_api_post-private-donau.c */
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