Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2020-2023 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_instances.c
21 : * @brief Implementation of the POST /instances request
22 : * of the merchant's HTTP API
23 : * @author Christian Grothoff
24 : */
25 : #include "platform.h"
26 : #include <curl/curl.h>
27 : #include <jansson.h>
28 : #include <microhttpd.h> /* just for HTTP status codes */
29 : #include <gnunet/gnunet_util_lib.h>
30 : #include "taler_merchant_service.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 : #include <taler/taler_kyclogic_lib.h>
36 :
37 :
38 : /**
39 : * Handle for a POST /instances/$ID operation.
40 : */
41 : struct TALER_MERCHANT_InstancesPostHandle
42 : {
43 :
44 : /**
45 : * The url for this request.
46 : */
47 : char *url;
48 :
49 : /**
50 : * Handle for the request.
51 : */
52 : struct GNUNET_CURL_Job *job;
53 :
54 : /**
55 : * Function to call with the result.
56 : */
57 : TALER_MERCHANT_InstancesPostCallback cb;
58 :
59 : /**
60 : * Closure for @a cb.
61 : */
62 : void *cb_cls;
63 :
64 : /**
65 : * Reference to the execution context.
66 : */
67 : struct GNUNET_CURL_Context *ctx;
68 :
69 : /**
70 : * Minor context that holds body and headers.
71 : */
72 : struct TALER_CURL_PostContext post_ctx;
73 :
74 : };
75 :
76 :
77 : /**
78 : * Function called when we're done processing the
79 : * HTTP POST /instances request.
80 : *
81 : * @param cls the `struct TALER_MERCHANT_InstancesPostHandle`
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 19 : handle_post_instances_finished (void *cls,
87 : long response_code,
88 : const void *response)
89 : {
90 19 : struct TALER_MERCHANT_InstancesPostHandle *iph = cls;
91 19 : const json_t *json = response;
92 19 : struct TALER_MERCHANT_HttpResponse hr = {
93 19 : .http_status = (unsigned int) response_code,
94 : .reply = json
95 : };
96 :
97 19 : iph->job = NULL;
98 19 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
99 : "POST /management/instances completed with response code %u\n",
100 : (unsigned int) response_code);
101 19 : switch (response_code)
102 : {
103 0 : case 0:
104 0 : hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
105 0 : break;
106 19 : case MHD_HTTP_NO_CONTENT:
107 19 : 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 19 : iph->cb (iph->cb_cls,
157 : &hr);
158 19 : TALER_MERCHANT_instances_post_cancel (iph);
159 19 : }
160 :
161 :
162 : struct TALER_MERCHANT_InstancesPostHandle *
163 19 : TALER_MERCHANT_instances_post (
164 : struct GNUNET_CURL_Context *ctx,
165 : const char *backend_url,
166 : const char *instance_id,
167 : const char *name,
168 : const json_t *address,
169 : const json_t *jurisdiction,
170 : bool use_stefan,
171 : struct GNUNET_TIME_Relative default_wire_transfer_delay,
172 : struct GNUNET_TIME_Relative default_pay_delay,
173 : struct GNUNET_TIME_Relative default_refund_delay,
174 : const char *auth_password,
175 : TALER_MERCHANT_InstancesPostCallback cb,
176 : void *cb_cls)
177 : {
178 : struct TALER_MERCHANT_InstancesPostHandle *iph;
179 : json_t *req_obj;
180 : json_t *auth_obj;
181 :
182 19 : if (NULL != auth_password)
183 : {
184 0 : auth_obj = GNUNET_JSON_PACK (
185 : GNUNET_JSON_pack_string ("method",
186 : "token"),
187 : GNUNET_JSON_pack_string ("password",
188 : auth_password));
189 : }
190 : else
191 : {
192 19 : auth_obj = GNUNET_JSON_PACK (
193 : GNUNET_JSON_pack_string ("method",
194 : "external"));
195 : }
196 19 : if (NULL == auth_obj)
197 : {
198 0 : GNUNET_break (0);
199 0 : return NULL;
200 : }
201 19 : req_obj = GNUNET_JSON_PACK (
202 : GNUNET_JSON_pack_string ("id",
203 : instance_id),
204 : GNUNET_JSON_pack_string ("name",
205 : name),
206 : GNUNET_JSON_pack_object_incref ("address",
207 : (json_t *) address),
208 : GNUNET_JSON_pack_object_incref ("jurisdiction",
209 : (json_t *) jurisdiction),
210 : GNUNET_JSON_pack_bool ("use_stefan",
211 : use_stefan),
212 : GNUNET_JSON_pack_time_rel ("default_wire_transfer_delay",
213 : default_wire_transfer_delay),
214 : GNUNET_JSON_pack_time_rel ("default_pay_delay",
215 : default_pay_delay),
216 : GNUNET_JSON_pack_time_rel ("default_refund_delay",
217 : default_refund_delay),
218 : /* FIXME: add eventually to arguments when we transform the API... */
219 : GNUNET_JSON_pack_time_rounder_interval (
220 : "default_wire_transfer_rounding_interval",
221 : GNUNET_TIME_RI_NONE),
222 : GNUNET_JSON_pack_object_steal ("auth",
223 : auth_obj));
224 19 : iph = GNUNET_new (struct TALER_MERCHANT_InstancesPostHandle);
225 19 : iph->ctx = ctx;
226 19 : iph->cb = cb;
227 19 : iph->cb_cls = cb_cls;
228 19 : iph->url = TALER_url_join (backend_url,
229 : "management/instances",
230 : NULL);
231 19 : if (NULL == iph->url)
232 : {
233 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
234 : "Could not construct request URL.\n");
235 0 : json_decref (req_obj);
236 0 : GNUNET_free (iph);
237 0 : return NULL;
238 : }
239 : {
240 : CURL *eh;
241 :
242 19 : eh = TALER_MERCHANT_curl_easy_get_ (iph->url);
243 19 : if (GNUNET_OK !=
244 19 : TALER_curl_easy_post (&iph->post_ctx,
245 : eh,
246 : req_obj))
247 : {
248 0 : GNUNET_break (0);
249 0 : curl_easy_cleanup (eh);
250 0 : json_decref (req_obj);
251 0 : GNUNET_free (iph);
252 0 : return NULL;
253 : }
254 19 : json_decref (req_obj);
255 38 : iph->job = GNUNET_CURL_job_add2 (ctx,
256 : eh,
257 19 : iph->post_ctx.headers,
258 : &handle_post_instances_finished,
259 : iph);
260 : }
261 19 : return iph;
262 : }
263 :
264 :
265 : void
266 19 : TALER_MERCHANT_instances_post_cancel (
267 : struct TALER_MERCHANT_InstancesPostHandle *iph)
268 : {
269 19 : if (NULL != iph->job)
270 : {
271 0 : GNUNET_CURL_job_cancel (iph->job);
272 0 : iph->job = NULL;
273 : }
274 19 : TALER_curl_easy_post_finished (&iph->post_ctx);
275 19 : GNUNET_free (iph->url);
276 19 : GNUNET_free (iph);
277 19 : }
278 :
279 :
280 : /* end of merchant_api_post_instances.c */
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