Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2025 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU Lesser General Public License as published by the Free
7 : Software Foundation; either version 2.1, or (at your option) any later version.
8 :
9 : TALER is distributed in the hope that it will be useful, but WITHOUT ANY
10 : WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11 : A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
12 :
13 : You should have received a copy of the GNU Lesser General Public License along with
14 : TALER; see the file COPYING.LGPL. If not, see <http://www.gnu.org/licenses/>
15 : */
16 : /**
17 : * @file merchant_api_post_units.c
18 : * @brief Implementation of POST /private/units
19 : * @author Bohdan Potuzhnyi
20 : */
21 : #include "platform.h"
22 : #include <curl/curl.h>
23 : #include <jansson.h>
24 : #include <microhttpd.h>
25 : #include <gnunet/gnunet_util_lib.h>
26 : #include "taler_merchant_service.h"
27 : #include "merchant_api_curl_defaults.h"
28 : #include "merchant_api_common.h"
29 : #include <taler/taler_json_lib.h>
30 : #include <taler/taler_curl_lib.h>
31 :
32 :
33 : /**
34 : * Handle for a POST /private/units operation.
35 : */
36 : struct TALER_MERCHANT_UnitsPostHandle
37 : {
38 : /**
39 : * Fully qualified request URL.
40 : */
41 : char *url;
42 :
43 : /**
44 : * CURL job handle.
45 : */
46 : struct GNUNET_CURL_Job *job;
47 :
48 : /**
49 : * Callback to invoke with the result.
50 : */
51 : TALER_MERCHANT_UnitsPostCallback cb;
52 :
53 : /**
54 : * Closure for @a cb.
55 : */
56 : void *cb_cls;
57 :
58 : /**
59 : * Execution context.
60 : */
61 : struct GNUNET_CURL_Context *ctx;
62 :
63 : /**
64 : * Helper keeping POST body and headers alive.
65 : */
66 : struct TALER_CURL_PostContext post_ctx;
67 : };
68 :
69 :
70 : /**
71 : * Called when the HTTP transfer finishes.
72 : *
73 : * @param cls operation handle
74 : * @param response_code HTTP status (0 on network / parsing failures)
75 : * @param response parsed JSON reply (NULL if unavailable)
76 : */
77 : static void
78 6 : handle_post_units_finished (void *cls,
79 : long response_code,
80 : const void *response)
81 : {
82 6 : struct TALER_MERCHANT_UnitsPostHandle *uph = cls;
83 6 : const json_t *json = response;
84 6 : struct TALER_MERCHANT_HttpResponse hr = {
85 6 : .http_status = (unsigned int) response_code,
86 : .reply = json
87 : };
88 :
89 6 : uph->job = NULL;
90 6 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
91 : "POST /private/units completed with status %u\n",
92 : (unsigned int) response_code);
93 6 : switch (response_code)
94 : {
95 4 : case MHD_HTTP_NO_CONTENT:
96 4 : break;
97 2 : case MHD_HTTP_BAD_REQUEST:
98 : case MHD_HTTP_UNAUTHORIZED:
99 : case MHD_HTTP_FORBIDDEN:
100 : case MHD_HTTP_NOT_FOUND:
101 : case MHD_HTTP_CONFLICT:
102 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
103 2 : hr.ec = TALER_JSON_get_error_code (json);
104 2 : hr.hint = TALER_JSON_get_error_hint (json);
105 2 : break;
106 0 : case 0:
107 0 : hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
108 0 : break;
109 0 : default:
110 0 : TALER_MERCHANT_parse_error_details_ (json,
111 : response_code,
112 : &hr);
113 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
114 : "Unexpected response %u/%d for POST /private/units\n",
115 : (unsigned int) response_code,
116 : (int) hr.ec);
117 0 : GNUNET_break_op (0);
118 0 : break;
119 : }
120 6 : uph->cb (uph->cb_cls,
121 : &hr);
122 6 : TALER_MERCHANT_units_post_cancel (uph);
123 6 : }
124 :
125 :
126 : struct TALER_MERCHANT_UnitsPostHandle *
127 6 : TALER_MERCHANT_units_post (struct GNUNET_CURL_Context *ctx,
128 : const char *backend_url,
129 : const char *unit_id,
130 : const char *unit_name_long,
131 : const char *unit_name_short,
132 : bool unit_allow_fraction,
133 : uint32_t unit_precision_level,
134 : bool unit_active,
135 : const json_t *unit_name_long_i18n,
136 : const json_t *unit_name_short_i18n,
137 : TALER_MERCHANT_UnitsPostCallback cb,
138 : void *cb_cls)
139 : {
140 : struct TALER_MERCHANT_UnitsPostHandle *uph;
141 : json_t *req_obj;
142 :
143 6 : req_obj = GNUNET_JSON_PACK (
144 : GNUNET_JSON_pack_string ("unit",
145 : unit_id),
146 : GNUNET_JSON_pack_string ("unit_name_long",
147 : unit_name_long),
148 : GNUNET_JSON_pack_string ("unit_name_short",
149 : unit_name_short),
150 : GNUNET_JSON_pack_bool ("unit_allow_fraction",
151 : unit_allow_fraction),
152 : GNUNET_JSON_pack_uint64 ("unit_precision_level",
153 : (uint64_t) unit_precision_level),
154 : GNUNET_JSON_pack_bool ("unit_active",
155 : unit_active),
156 : GNUNET_JSON_pack_allow_null (
157 : GNUNET_JSON_pack_object_incref ("unit_name_long_i18n",
158 : (json_t *) unit_name_long_i18n)),
159 : GNUNET_JSON_pack_allow_null (
160 : GNUNET_JSON_pack_object_incref ("unit_name_short_i18n",
161 : (json_t *) unit_name_short_i18n)));
162 6 : uph = GNUNET_new (struct TALER_MERCHANT_UnitsPostHandle);
163 6 : uph->ctx = ctx;
164 6 : uph->cb = cb;
165 6 : uph->cb_cls = cb_cls;
166 6 : uph->url = TALER_url_join (backend_url,
167 : "private/units",
168 : NULL);
169 6 : if (NULL == uph->url)
170 : {
171 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
172 : "Failed to build /private/units URL\n");
173 0 : json_decref (req_obj);
174 0 : GNUNET_free (uph);
175 0 : return NULL;
176 : }
177 : {
178 : CURL *eh;
179 :
180 6 : eh = TALER_MERCHANT_curl_easy_get_ (uph->url);
181 6 : if (GNUNET_OK !=
182 6 : TALER_curl_easy_post (&uph->post_ctx,
183 : eh,
184 : req_obj))
185 : {
186 0 : GNUNET_break (0);
187 0 : curl_easy_cleanup (eh);
188 0 : json_decref (req_obj);
189 0 : GNUNET_free (uph->url);
190 0 : GNUNET_free (uph);
191 0 : return NULL;
192 : }
193 6 : json_decref (req_obj);
194 12 : uph->job = GNUNET_CURL_job_add2 (ctx,
195 : eh,
196 6 : uph->post_ctx.headers,
197 : &handle_post_units_finished,
198 : uph);
199 : }
200 6 : return uph;
201 : }
202 :
203 :
204 : void
205 6 : TALER_MERCHANT_units_post_cancel (struct TALER_MERCHANT_UnitsPostHandle *uph)
206 : {
207 6 : if (NULL != uph->job)
208 : {
209 0 : GNUNET_CURL_job_cancel (uph->job);
210 0 : uph->job = NULL;
211 : }
212 6 : TALER_curl_easy_post_finished (&uph->post_ctx);
213 6 : GNUNET_free (uph->url);
214 6 : GNUNET_free (uph);
215 6 : }
216 :
217 :
218 : /* end of merchant_api_post_units.c */
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