Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2020-2024 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_tokenfamilies.c
21 : * @brief Implementation of the POST /tokenfamilies request
22 : * of the merchant's HTTP API
23 : * @author Christian Blättler
24 : */
25 : #include "platform.h"
26 : #include <curl/curl.h>
27 : #include <gnunet/gnunet_json_lib.h>
28 : #include <gnunet/gnunet_time_lib.h>
29 : #include <jansson.h>
30 : #include <microhttpd.h> /* just for HTTP status codes */
31 : #include <gnunet/gnunet_util_lib.h>
32 : #include "taler_merchant_service.h"
33 : #include "merchant_api_curl_defaults.h"
34 : #include "merchant_api_common.h"
35 : #include <taler/taler_json_lib.h>
36 : #include <taler/taler_curl_lib.h>
37 :
38 :
39 : /**
40 : * Handle for a POST /tokenfamilies operation.
41 : */
42 : struct TALER_MERCHANT_TokenFamiliesPostHandle
43 : {
44 :
45 : /**
46 : * The url for this request.
47 : */
48 : char *url;
49 :
50 : /**
51 : * Handle for the request.
52 : */
53 : struct GNUNET_CURL_Job *job;
54 :
55 : /**
56 : * Function to call with the result.
57 : */
58 : TALER_MERCHANT_TokenFamiliesPostCallback cb;
59 :
60 : /**
61 : * Closure for @a cb.
62 : */
63 : void *cb_cls;
64 :
65 : /**
66 : * Reference to the execution context.
67 : */
68 : struct GNUNET_CURL_Context *ctx;
69 :
70 : /**
71 : * Minor context that holds body and headers.
72 : */
73 : struct TALER_CURL_PostContext post_ctx;
74 :
75 : };
76 :
77 : /**
78 : * Function called when we're done processing the
79 : * HTTP POST /tokenfamilies request.
80 : *
81 : * @param cls the `struct TALER_MERCHANT_TokenFamiliesPostHandle`
82 : * @param response_code HTTP response code, 0 on error
83 : * @param response response body, NULL if not in JSON
84 : */
85 : static void
86 4 : handle_post_token_families_finished (void *cls,
87 : long response_code,
88 : const void *response)
89 : {
90 4 : struct TALER_MERCHANT_TokenFamiliesPostHandle *handle = cls;
91 4 : const json_t *json = response;
92 4 : struct TALER_MERCHANT_HttpResponse hr = {
93 4 : .http_status = (unsigned int) response_code,
94 : .reply = json
95 : };
96 :
97 4 : handle->job = NULL;
98 4 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
99 : "POST /tokenfamilies completed with response code %u\n",
100 : (unsigned int) response_code);
101 4 : switch (response_code)
102 : {
103 0 : case 0:
104 0 : hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
105 0 : break;
106 4 : case MHD_HTTP_NO_CONTENT:
107 4 : break;
108 0 : case MHD_HTTP_BAD_REQUEST:
109 0 : hr.ec = TALER_JSON_get_error_code (json);
110 0 : hr.hint = TALER_JSON_get_error_hint (json);
111 : /* This should never happen, either us
112 : * or the merchant is buggy (or API version conflict);
113 : * just pass JSON reply to the application */
114 0 : break;
115 0 : case MHD_HTTP_UNAUTHORIZED:
116 0 : hr.ec = TALER_JSON_get_error_code (json);
117 0 : hr.hint = TALER_JSON_get_error_hint (json);
118 : /* Nothing really to verify, merchant says we need to authenticate. */
119 0 : break;
120 0 : case MHD_HTTP_FORBIDDEN:
121 0 : hr.ec = TALER_JSON_get_error_code (json);
122 0 : hr.hint = TALER_JSON_get_error_hint (json);
123 : /* Nothing really to verify, merchant says we tried to abort the payment
124 : * after it was successful. We should pass the JSON reply to the
125 : * application */
126 0 : break;
127 0 : case MHD_HTTP_NOT_FOUND:
128 0 : hr.ec = TALER_JSON_get_error_code (json);
129 0 : hr.hint = TALER_JSON_get_error_hint (json);
130 : /* Nothing really to verify, this should never
131 : happen, we should pass the JSON reply to the
132 : application */
133 0 : break;
134 0 : case MHD_HTTP_CONFLICT:
135 0 : hr.ec = TALER_JSON_get_error_code (json);
136 0 : hr.hint = TALER_JSON_get_error_hint (json);
137 0 : break;
138 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
139 0 : hr.ec = TALER_JSON_get_error_code (json);
140 0 : hr.hint = TALER_JSON_get_error_hint (json);
141 : /* Server had an internal issue; we should retry,
142 : but this API leaves this to the application */
143 0 : break;
144 0 : default:
145 0 : TALER_MERCHANT_parse_error_details_ (json,
146 : response_code,
147 : &hr);
148 : /* unexpected response code */
149 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
150 : "Unexpected response code %u/%d\n",
151 : (unsigned int) response_code,
152 : (int) hr.ec);
153 0 : GNUNET_break_op (0);
154 0 : break;
155 : }
156 4 : handle->cb (handle->cb_cls,
157 : &hr);
158 4 : TALER_MERCHANT_token_families_post_cancel (handle);
159 4 : }
160 :
161 :
162 : struct TALER_MERCHANT_TokenFamiliesPostHandle *
163 4 : TALER_MERCHANT_token_families_post (
164 : struct GNUNET_CURL_Context *ctx,
165 : const char *backend_url,
166 : const char *slug,
167 : const char *name,
168 : const char *description,
169 : const json_t *description_i18n,
170 : const json_t *extra_data,
171 : struct GNUNET_TIME_Timestamp valid_after,
172 : struct GNUNET_TIME_Timestamp valid_before,
173 : struct GNUNET_TIME_Relative duration,
174 : struct GNUNET_TIME_Relative validity_granularity,
175 : struct GNUNET_TIME_Relative start_offset,
176 : const char *kind,
177 : TALER_MERCHANT_TokenFamiliesPostCallback cb,
178 : void *cb_cls)
179 : {
180 : struct TALER_MERCHANT_TokenFamiliesPostHandle *handle;
181 : json_t *req_obj;
182 :
183 4 : req_obj = GNUNET_JSON_PACK (
184 : GNUNET_JSON_pack_string ("slug",
185 : slug),
186 : GNUNET_JSON_pack_string ("name",
187 : name),
188 : GNUNET_JSON_pack_string ("description",
189 : description),
190 : GNUNET_JSON_pack_allow_null (
191 : GNUNET_JSON_pack_object_incref ("description_i18n",
192 : (json_t *) description_i18n)),
193 : GNUNET_JSON_pack_allow_null (
194 : GNUNET_JSON_pack_object_incref ("extra_data",
195 : (json_t *) extra_data)),
196 : GNUNET_JSON_pack_allow_null (
197 : GNUNET_JSON_pack_timestamp ("valid_after",
198 : valid_after)),
199 : GNUNET_JSON_pack_timestamp ("valid_before",
200 : valid_before),
201 : GNUNET_JSON_pack_time_rel ("duration",
202 : duration),
203 : GNUNET_JSON_pack_time_rel ("validity_granularity",
204 : validity_granularity),
205 : GNUNET_JSON_pack_time_rel ("start_offset",
206 : start_offset),
207 : GNUNET_JSON_pack_string ("kind",
208 : kind));
209 4 : handle = GNUNET_new (struct TALER_MERCHANT_TokenFamiliesPostHandle);
210 4 : handle->ctx = ctx;
211 4 : handle->cb = cb;
212 4 : handle->cb_cls = cb_cls;
213 4 : handle->url = TALER_url_join (backend_url,
214 : "private/tokenfamilies",
215 : NULL);
216 4 : if (NULL == handle->url)
217 : {
218 :
219 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
220 : "Could not construct request URL.\n");
221 0 : json_decref (req_obj);
222 0 : GNUNET_free (handle);
223 0 : return NULL;
224 : }
225 : {
226 : CURL *eh;
227 :
228 4 : eh = TALER_MERCHANT_curl_easy_get_ (handle->url);
229 4 : GNUNET_assert (GNUNET_OK ==
230 : TALER_curl_easy_post (&handle->post_ctx,
231 : eh,
232 : req_obj));
233 4 : json_decref (req_obj);
234 8 : handle->job = GNUNET_CURL_job_add2 (ctx,
235 : eh,
236 4 : handle->post_ctx.headers,
237 : &handle_post_token_families_finished,
238 : handle);
239 4 : GNUNET_assert (NULL != handle->job);
240 : }
241 4 : return handle;
242 : }
243 :
244 :
245 : void
246 4 : TALER_MERCHANT_token_families_post_cancel (
247 : struct TALER_MERCHANT_TokenFamiliesPostHandle *pph)
248 : {
249 4 : if (NULL != pph->job)
250 : {
251 0 : GNUNET_CURL_job_cancel (pph->job);
252 0 : pph->job = NULL;
253 : }
254 4 : TALER_curl_easy_post_finished (&pph->post_ctx);
255 4 : GNUNET_free (pph->url);
256 4 : GNUNET_free (pph);
257 4 : }
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