Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022-2026 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_patch-private-accounts-H_WIRE.c
21 : * @brief Implementation of the PATCH /private/accounts/$H_WIRE request
22 : * @author Christian Grothoff
23 : */
24 : #include "taler/platform.h"
25 : #include <curl/curl.h>
26 : #include <jansson.h>
27 : #include <microhttpd.h> /* just for HTTP status codes */
28 : #include <gnunet/gnunet_util_lib.h>
29 : #include <gnunet/gnunet_curl_lib.h>
30 : #include <taler/merchant/patch-private-accounts-H_WIRE.h>
31 : #include "merchant_api_curl_defaults.h"
32 : #include "merchant_api_common.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 :
36 :
37 : /**
38 : * Handle for a PATCH /private/accounts/$H_WIRE operation.
39 : */
40 : struct TALER_MERCHANT_PatchPrivateAccountHandle
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_PatchPrivateAccountCallback cb;
61 :
62 : /**
63 : * Closure for @a cb.
64 : */
65 : TALER_MERCHANT_PATCH_PRIVATE_ACCOUNT_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 : * Hash of the wire details identifying the account.
79 : */
80 : struct TALER_MerchantWireHashP h_wire;
81 :
82 : /**
83 : * Optional credit facade URL.
84 : */
85 : char *credit_facade_url;
86 :
87 : /**
88 : * Optional credit facade credentials (JSON).
89 : */
90 : json_t *credit_facade_credentials;
91 :
92 : /**
93 : * Optional extra wire subject metadata (JSON).
94 : */
95 : char*extra_wire_subject_metadata;
96 : };
97 :
98 :
99 : /**
100 : * Function called when we're done processing the
101 : * HTTP PATCH /private/accounts/$H_WIRE request.
102 : *
103 : * @param cls the `struct TALER_MERCHANT_PatchPrivateAccountHandle`
104 : * @param response_code HTTP response code, 0 on error
105 : * @param response response body, NULL if not in JSON
106 : */
107 : static void
108 0 : handle_patch_account_finished (void *cls,
109 : long response_code,
110 : const void *response)
111 : {
112 0 : struct TALER_MERCHANT_PatchPrivateAccountHandle *pah = cls;
113 0 : const json_t *json = response;
114 0 : struct TALER_MERCHANT_PatchPrivateAccountResponse par = {
115 0 : .hr.http_status = (unsigned int) response_code,
116 : .hr.reply = json
117 : };
118 :
119 0 : pah->job = NULL;
120 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
121 : "PATCH /private/accounts/$H_WIRE completed with response code %u\n",
122 : (unsigned int) response_code);
123 0 : switch (response_code)
124 : {
125 0 : case 0:
126 0 : par.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
127 0 : break;
128 0 : case MHD_HTTP_NO_CONTENT:
129 0 : break;
130 0 : case MHD_HTTP_BAD_REQUEST:
131 0 : par.hr.ec = TALER_JSON_get_error_code (json);
132 0 : par.hr.hint = TALER_JSON_get_error_hint (json);
133 0 : GNUNET_break_op (0);
134 0 : break;
135 0 : case MHD_HTTP_UNAUTHORIZED:
136 0 : par.hr.ec = TALER_JSON_get_error_code (json);
137 0 : par.hr.hint = TALER_JSON_get_error_hint (json);
138 0 : break;
139 0 : case MHD_HTTP_FORBIDDEN:
140 0 : par.hr.ec = TALER_JSON_get_error_code (json);
141 0 : par.hr.hint = TALER_JSON_get_error_hint (json);
142 0 : break;
143 0 : case MHD_HTTP_NOT_FOUND:
144 0 : par.hr.ec = TALER_JSON_get_error_code (json);
145 0 : par.hr.hint = TALER_JSON_get_error_hint (json);
146 0 : break;
147 0 : case MHD_HTTP_CONFLICT:
148 0 : par.hr.ec = TALER_JSON_get_error_code (json);
149 0 : par.hr.hint = TALER_JSON_get_error_hint (json);
150 0 : break;
151 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
152 0 : par.hr.ec = TALER_JSON_get_error_code (json);
153 0 : par.hr.hint = TALER_JSON_get_error_hint (json);
154 0 : break;
155 0 : default:
156 0 : TALER_MERCHANT_parse_error_details_ (json,
157 : response_code,
158 : &par.hr);
159 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
160 : "Unexpected response code %u/%d\n",
161 : (unsigned int) response_code,
162 : (int) par.hr.ec);
163 0 : GNUNET_break_op (0);
164 0 : break;
165 : }
166 0 : pah->cb (pah->cb_cls,
167 : &par);
168 0 : TALER_MERCHANT_patch_private_account_cancel (pah);
169 0 : }
170 :
171 :
172 : struct TALER_MERCHANT_PatchPrivateAccountHandle *
173 0 : TALER_MERCHANT_patch_private_account_create (
174 : struct GNUNET_CURL_Context *ctx,
175 : const char *url,
176 : const struct TALER_MerchantWireHashP *h_wire)
177 : {
178 : struct TALER_MERCHANT_PatchPrivateAccountHandle *pah;
179 :
180 0 : pah = GNUNET_new (struct TALER_MERCHANT_PatchPrivateAccountHandle);
181 0 : pah->ctx = ctx;
182 0 : pah->base_url = GNUNET_strdup (url);
183 0 : pah->h_wire = *h_wire;
184 0 : return pah;
185 : }
186 :
187 :
188 : enum GNUNET_GenericReturnValue
189 0 : TALER_MERCHANT_patch_private_account_set_options_ (
190 : struct TALER_MERCHANT_PatchPrivateAccountHandle *pah,
191 : unsigned int num_options,
192 : const struct TALER_MERCHANT_PatchPrivateAccountOptionValue *options)
193 : {
194 0 : for (unsigned int i = 0; i < num_options; i++)
195 : {
196 0 : switch (options[i].option)
197 : {
198 0 : case TALER_MERCHANT_PATCH_PRIVATE_ACCOUNT_OPTION_END:
199 0 : return GNUNET_OK;
200 0 : case TALER_MERCHANT_PATCH_PRIVATE_ACCOUNT_OPTION_CREDIT_FACADE_URL:
201 0 : GNUNET_free (pah->credit_facade_url);
202 0 : pah->credit_facade_url = GNUNET_strdup (options[i].details.credit_facade_url);
203 0 : break;
204 0 : case TALER_MERCHANT_PATCH_PRIVATE_ACCOUNT_OPTION_CREDIT_FACADE_CREDENTIALS:
205 0 : json_decref (pah->credit_facade_credentials);
206 : pah->credit_facade_credentials
207 0 : = json_incref ((json_t *) options[i].details.credit_facade_credentials);
208 0 : break;
209 0 : case TALER_MERCHANT_PATCH_PRIVATE_ACCOUNT_OPTION_EXTRA_WIRE_SUBJECT_METADATA:
210 0 : GNUNET_free (pah->extra_wire_subject_metadata);
211 : pah->extra_wire_subject_metadata
212 0 : = GNUNET_strdup (options[i].details.extra_wire_subject_metadata);
213 0 : break;
214 0 : default:
215 0 : GNUNET_break (0);
216 0 : return GNUNET_SYSERR;
217 : }
218 : }
219 0 : return GNUNET_OK;
220 : }
221 :
222 :
223 : enum TALER_ErrorCode
224 0 : TALER_MERCHANT_patch_private_account_start (
225 : struct TALER_MERCHANT_PatchPrivateAccountHandle *pah,
226 : TALER_MERCHANT_PatchPrivateAccountCallback cb,
227 : TALER_MERCHANT_PATCH_PRIVATE_ACCOUNT_RESULT_CLOSURE *cb_cls)
228 : {
229 : json_t *req_obj;
230 : CURL *eh;
231 :
232 0 : pah->cb = cb;
233 0 : pah->cb_cls = cb_cls;
234 : {
235 : char w_str[sizeof (pah->h_wire) * 2];
236 : char *path;
237 : char *end;
238 :
239 0 : end = GNUNET_STRINGS_data_to_string (&pah->h_wire,
240 : sizeof (pah->h_wire),
241 : w_str,
242 : sizeof (w_str));
243 0 : *end = '\0';
244 0 : GNUNET_asprintf (&path,
245 : "private/accounts/%s",
246 : w_str);
247 0 : pah->url = TALER_url_join (pah->base_url,
248 : path,
249 : NULL);
250 0 : GNUNET_free (path);
251 : }
252 0 : if (NULL == pah->url)
253 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
254 0 : req_obj = GNUNET_JSON_PACK (
255 : GNUNET_JSON_pack_allow_null (
256 : GNUNET_JSON_pack_string ("credit_facade_url",
257 : pah->credit_facade_url)),
258 : GNUNET_JSON_pack_allow_null (
259 : GNUNET_JSON_pack_object_incref ("credit_facade_credentials",
260 : pah->credit_facade_credentials)),
261 : GNUNET_JSON_pack_allow_null (
262 : GNUNET_JSON_pack_string ("extra_wire_subject_metadata",
263 : pah->extra_wire_subject_metadata)
264 : ));
265 0 : eh = TALER_MERCHANT_curl_easy_get_ (pah->url);
266 0 : if ( (NULL == eh) ||
267 : (GNUNET_OK !=
268 0 : TALER_curl_easy_post (&pah->post_ctx,
269 : eh,
270 : req_obj)) )
271 : {
272 0 : GNUNET_break (0);
273 0 : json_decref (req_obj);
274 0 : if (NULL != eh)
275 0 : curl_easy_cleanup (eh);
276 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
277 : }
278 0 : json_decref (req_obj);
279 0 : GNUNET_assert (CURLE_OK ==
280 : curl_easy_setopt (eh,
281 : CURLOPT_CUSTOMREQUEST,
282 : MHD_HTTP_METHOD_PATCH));
283 0 : pah->job = GNUNET_CURL_job_add2 (pah->ctx,
284 : eh,
285 0 : pah->post_ctx.headers,
286 : &handle_patch_account_finished,
287 : pah);
288 0 : if (NULL == pah->job)
289 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
290 0 : return TALER_EC_NONE;
291 : }
292 :
293 :
294 : void
295 0 : TALER_MERCHANT_patch_private_account_cancel (
296 : struct TALER_MERCHANT_PatchPrivateAccountHandle *pah)
297 : {
298 0 : if (NULL != pah->job)
299 : {
300 0 : GNUNET_CURL_job_cancel (pah->job);
301 0 : pah->job = NULL;
302 : }
303 0 : TALER_curl_easy_post_finished (&pah->post_ctx);
304 0 : GNUNET_free (pah->url);
305 0 : GNUNET_free (pah->credit_facade_url);
306 0 : json_decref (pah->credit_facade_credentials);
307 0 : GNUNET_free (pah->extra_wire_subject_metadata);
308 0 : GNUNET_free (pah->base_url);
309 0 : GNUNET_free (pah);
310 0 : }
311 :
312 :
313 : /* end of merchant_api_patch-private-accounts-H_WIRE.c */
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