Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2020 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_instance.c
21 : * @brief Implementation of the PATCH /instances/$ID request
22 : * of the merchant's HTTP API
23 : * @author Christian Grothoff
24 : */
25 : #include "platform.h"
26 : #include <curl/curl.h>
27 : #include <jansson.h>
28 : #include <microhttpd.h> /* just for HTTP status codes */
29 : #include <gnunet/gnunet_util_lib.h>
30 : #include "taler_merchant_service.h"
31 : #include "merchant_api_curl_defaults.h"
32 : #include <taler/taler_json_lib.h>
33 : #include <taler/taler_curl_lib.h>
34 :
35 :
36 : /**
37 : * Handle for a PATCH /instances/$ID operation.
38 : */
39 : struct TALER_MERCHANT_InstancePatchHandle
40 : {
41 :
42 : /**
43 : * The url for this request.
44 : */
45 : char *url;
46 :
47 : /**
48 : * Handle for the request.
49 : */
50 : struct GNUNET_CURL_Job *job;
51 :
52 : /**
53 : * Function to call with the result.
54 : */
55 : TALER_MERCHANT_InstancePatchCallback cb;
56 :
57 : /**
58 : * Closure for @a cb.
59 : */
60 : void *cb_cls;
61 :
62 : /**
63 : * Reference to the execution context.
64 : */
65 : struct GNUNET_CURL_Context *ctx;
66 :
67 : /**
68 : * Minor context that holds body and headers.
69 : */
70 : struct TALER_CURL_PostContext post_ctx;
71 :
72 : };
73 :
74 :
75 : /**
76 : * Function called when we're done processing the
77 : * HTTP PATCH /instances/$ID request.
78 : *
79 : * @param cls the `struct TALER_MERCHANT_InstancePatchHandle`
80 : * @param response_code HTTP response code, 0 on error
81 : * @param response response body, NULL if not in JSON
82 : */
83 : static void
84 0 : handle_patch_instance_finished (void *cls,
85 : long response_code,
86 : const void *response)
87 : {
88 0 : struct TALER_MERCHANT_InstancePatchHandle *iph = cls;
89 0 : const json_t *json = response;
90 0 : struct TALER_MERCHANT_HttpResponse hr = {
91 0 : .http_status = (unsigned int) response_code,
92 : .reply = json
93 : };
94 :
95 0 : iph->job = NULL;
96 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
97 : "PATCH /instances/$ID completed with response code %u\n",
98 : (unsigned int) response_code);
99 0 : switch (response_code)
100 : {
101 0 : case 0:
102 0 : hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
103 0 : break;
104 0 : case MHD_HTTP_NO_CONTENT:
105 0 : break;
106 0 : case MHD_HTTP_BAD_REQUEST:
107 0 : hr.ec = TALER_JSON_get_error_code (json);
108 0 : hr.hint = TALER_JSON_get_error_hint (json);
109 0 : break;
110 0 : case MHD_HTTP_UNAUTHORIZED:
111 0 : hr.ec = TALER_JSON_get_error_code (json);
112 0 : hr.hint = TALER_JSON_get_error_hint (json);
113 : /* Nothing really to verify, merchant says we need to authenticate. */
114 0 : break;
115 0 : case MHD_HTTP_FORBIDDEN:
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 tried to abort the payment
119 : * after it was successful. We should pass the JSON reply to the
120 : * application */
121 0 : break;
122 0 : case MHD_HTTP_NOT_FOUND:
123 0 : hr.ec = TALER_JSON_get_error_code (json);
124 0 : hr.hint = TALER_JSON_get_error_hint (json);
125 0 : break;
126 0 : case MHD_HTTP_CONFLICT:
127 0 : hr.ec = TALER_JSON_get_error_code (json);
128 0 : hr.hint = TALER_JSON_get_error_hint (json);
129 0 : break;
130 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
131 0 : hr.ec = TALER_JSON_get_error_code (json);
132 0 : hr.hint = TALER_JSON_get_error_hint (json);
133 : /* Server had an internal issue; we should retry,
134 : but this API leaves this to the application */
135 0 : break;
136 0 : default:
137 0 : TALER_MERCHANT_parse_error_details_ (json,
138 : response_code,
139 : &hr);
140 : /* unexpected response code */
141 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
142 : "Unexpected response code %u/%d\n",
143 : (unsigned int) response_code,
144 : (int) hr.ec);
145 0 : GNUNET_break_op (0);
146 0 : break;
147 : }
148 0 : iph->cb (iph->cb_cls,
149 : &hr);
150 0 : TALER_MERCHANT_instance_patch_cancel (iph);
151 0 : }
152 :
153 :
154 : struct TALER_MERCHANT_InstancePatchHandle *
155 0 : TALER_MERCHANT_instance_patch (
156 : struct GNUNET_CURL_Context *ctx,
157 : const char *backend_url,
158 : const char *instance_id,
159 : unsigned int accounts_length,
160 : const char *payto_uris[],
161 : const char *name,
162 : const json_t *address,
163 : const json_t *jurisdiction,
164 : const struct TALER_Amount *default_max_wire_fee,
165 : uint32_t default_wire_fee_amortization,
166 : const struct TALER_Amount *default_max_deposit_fee,
167 : struct GNUNET_TIME_Relative default_wire_transfer_delay,
168 : struct GNUNET_TIME_Relative default_pay_delay,
169 : TALER_MERCHANT_InstancePatchCallback cb,
170 : void *cb_cls)
171 : {
172 : struct TALER_MERCHANT_InstancePatchHandle *iph;
173 : json_t *jpayto_uris;
174 : json_t *req_obj;
175 :
176 0 : jpayto_uris = json_array ();
177 0 : if (NULL == jpayto_uris)
178 : {
179 0 : GNUNET_break (0);
180 0 : return NULL;
181 : }
182 0 : for (unsigned int i = 0; i<accounts_length; i++)
183 : {
184 0 : if (0 !=
185 0 : json_array_append_new (jpayto_uris,
186 0 : json_string (payto_uris[i])))
187 : {
188 0 : GNUNET_break (0);
189 0 : json_decref (jpayto_uris);
190 0 : return NULL;
191 : }
192 : }
193 0 : req_obj = GNUNET_JSON_PACK (
194 : GNUNET_JSON_pack_array_steal ("payto_uris",
195 : jpayto_uris),
196 : GNUNET_JSON_pack_string ("name",
197 : name),
198 : GNUNET_JSON_pack_object_incref ("address",
199 : (json_t *) address),
200 : GNUNET_JSON_pack_object_incref ("jurisdiction",
201 : (json_t *) jurisdiction),
202 : TALER_JSON_pack_amount ("default_max_wire_fee",
203 : default_max_wire_fee),
204 : GNUNET_JSON_pack_uint64 ("default_wire_fee_amortization",
205 : default_wire_fee_amortization),
206 : TALER_JSON_pack_amount ("default_max_deposit_fee",
207 : default_max_deposit_fee),
208 : GNUNET_JSON_pack_time_rel ("default_wire_transfer_delay",
209 : default_wire_transfer_delay),
210 : GNUNET_JSON_pack_time_rel ("default_pay_delay",
211 : default_pay_delay));
212 0 : iph = GNUNET_new (struct TALER_MERCHANT_InstancePatchHandle);
213 0 : iph->ctx = ctx;
214 0 : iph->cb = cb;
215 0 : iph->cb_cls = cb_cls;
216 0 : if (NULL != instance_id)
217 : {
218 : char *path;
219 :
220 0 : GNUNET_asprintf (&path,
221 : "management/instances/%s",
222 : instance_id);
223 0 : iph->url = TALER_url_join (backend_url,
224 : path,
225 : NULL);
226 0 : GNUNET_free (path);
227 : }
228 : else
229 : {
230 : /* backend_url is already identifying the instance */
231 0 : iph->url = TALER_url_join (backend_url,
232 : "private",
233 : NULL);
234 : }
235 0 : if (NULL == iph->url)
236 : {
237 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
238 : "Could not construct request URL.\n");
239 0 : json_decref (req_obj);
240 0 : GNUNET_free (iph);
241 0 : return NULL;
242 : }
243 : {
244 : CURL *eh;
245 :
246 0 : eh = TALER_MERCHANT_curl_easy_get_ (iph->url);
247 0 : if (GNUNET_OK !=
248 0 : TALER_curl_easy_post (&iph->post_ctx,
249 : eh,
250 : req_obj))
251 : {
252 0 : GNUNET_break (0);
253 0 : curl_easy_cleanup (eh);
254 0 : json_decref (req_obj);
255 0 : GNUNET_free (iph->url);
256 0 : GNUNET_free (iph);
257 0 : return NULL;
258 : }
259 0 : json_decref (req_obj);
260 0 : GNUNET_assert (CURLE_OK ==
261 : curl_easy_setopt (eh,
262 : CURLOPT_CUSTOMREQUEST,
263 : MHD_HTTP_METHOD_PATCH));
264 0 : iph->job = GNUNET_CURL_job_add2 (ctx,
265 : eh,
266 0 : iph->post_ctx.headers,
267 : &handle_patch_instance_finished,
268 : iph);
269 : }
270 0 : return iph;
271 : }
272 :
273 :
274 : void
275 0 : TALER_MERCHANT_instance_patch_cancel (
276 : struct TALER_MERCHANT_InstancePatchHandle *iph)
277 : {
278 0 : if (NULL != iph->job)
279 : {
280 0 : GNUNET_CURL_job_cancel (iph->job);
281 0 : iph->job = NULL;
282 : }
283 0 : TALER_curl_easy_post_finished (&iph->post_ctx);
284 0 : GNUNET_free (iph->url);
285 0 : GNUNET_free (iph);
286 0 : }
287 :
288 :
289 : /* end of merchant_api_patch_instance.c */
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