Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2015-2023 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU General Public License as published by the Free Software
7 : Foundation; either version 3, 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 General Public License for more details.
12 :
13 : You should have received a copy of the GNU General Public License along with
14 : TALER; see the file COPYING. If not, see
15 : <http://www.gnu.org/licenses/>
16 : */
17 : /**
18 : * @file lib/exchange_api_management_post_extensions.c
19 : * @brief functions to handle the settings for extensions (p2p and age restriction)
20 : * @author Özgür Kesim
21 : */
22 : #include "taler/platform.h"
23 : #include "taler/taler_json_lib.h"
24 : #include <gnunet/gnunet_curl_lib.h>
25 : #include "taler/taler_extensions.h"
26 : #include "exchange_api_curl_defaults.h"
27 : #include "taler/taler_exchange_service.h"
28 : #include "taler/taler_signatures.h"
29 : #include "taler/taler_curl_lib.h"
30 : #include "taler/taler_json_lib.h"
31 :
32 :
33 : /**
34 : * @brief Handle for a POST /management/extensions request.
35 : */
36 : struct TALER_EXCHANGE_ManagementPostExtensionsHandle
37 : {
38 :
39 : /**
40 : * The url for this request.
41 : */
42 : char *url;
43 :
44 : /**
45 : * Minor context that holds body and headers.
46 : */
47 : struct TALER_CURL_PostContext post_ctx;
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_EXCHANGE_ManagementPostExtensionsCallback 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 :
71 : /**
72 : * Function called when we're done processing the
73 : * HTTP POST /management/extensions request.
74 : *
75 : * @param cls the `struct TALER_EXCHANGE_ManagementPostExtensionsHandle *`
76 : * @param response_code HTTP response code, 0 on error
77 : * @param response response body, NULL if not in JSON
78 : */
79 : static void
80 0 : handle_post_extensions_finished (void *cls,
81 : long response_code,
82 : const void *response)
83 : {
84 0 : struct TALER_EXCHANGE_ManagementPostExtensionsHandle *ph = cls;
85 0 : const json_t *json = response;
86 0 : struct TALER_EXCHANGE_ManagementPostExtensionsResponse per = {
87 0 : .hr.http_status = (unsigned int) response_code,
88 : .hr.reply = json
89 : };
90 :
91 0 : ph->job = NULL;
92 0 : switch (response_code)
93 : {
94 0 : case MHD_HTTP_NO_CONTENT:
95 0 : break;
96 0 : case MHD_HTTP_FORBIDDEN:
97 0 : per.hr.ec = TALER_JSON_get_error_code (json);
98 0 : per.hr.hint = TALER_JSON_get_error_hint (json);
99 0 : break;
100 0 : case MHD_HTTP_NOT_FOUND:
101 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
102 : "Server did not find handler at `%s'. Did you configure the correct exchange base URL?\n",
103 : ph->url);
104 0 : if (NULL != json)
105 : {
106 0 : per.hr.ec = TALER_JSON_get_error_code (json);
107 0 : per.hr.hint = TALER_JSON_get_error_hint (json);
108 : }
109 : else
110 : {
111 0 : per.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
112 0 : per.hr.hint = TALER_ErrorCode_get_hint (per.hr.ec);
113 : }
114 0 : break;
115 0 : default:
116 : /* unexpected response code */
117 0 : GNUNET_break_op (0);
118 0 : per.hr.ec = TALER_JSON_get_error_code (json);
119 0 : per.hr.hint = TALER_JSON_get_error_hint (json);
120 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
121 : "Unexpected response code %u/%d for exchange management post extensions\n",
122 : (unsigned int) response_code,
123 : (int) per.hr.ec);
124 0 : break;
125 : }
126 0 : if (NULL != ph->cb)
127 : {
128 0 : ph->cb (ph->cb_cls,
129 : &per);
130 0 : ph->cb = NULL;
131 : }
132 0 : TALER_EXCHANGE_management_post_extensions_cancel (ph);
133 0 : }
134 :
135 :
136 : struct TALER_EXCHANGE_ManagementPostExtensionsHandle *
137 0 : TALER_EXCHANGE_management_post_extensions (
138 : struct GNUNET_CURL_Context *ctx,
139 : const char *url,
140 : const struct TALER_EXCHANGE_ManagementPostExtensionsData *ped,
141 : TALER_EXCHANGE_ManagementPostExtensionsCallback cb,
142 : void *cb_cls)
143 : {
144 : struct TALER_EXCHANGE_ManagementPostExtensionsHandle *ph;
145 0 : CURL *eh = NULL;
146 0 : json_t *body = NULL;
147 :
148 0 : ph = GNUNET_new (struct TALER_EXCHANGE_ManagementPostExtensionsHandle);
149 0 : ph->cb = cb;
150 0 : ph->cb_cls = cb_cls;
151 0 : ph->ctx = ctx;
152 0 : ph->url = TALER_url_join (url,
153 : "management/extensions",
154 : NULL);
155 0 : if (NULL == ph->url)
156 : {
157 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
158 : "Could not construct request URL.\n");
159 0 : GNUNET_free (ph);
160 0 : return NULL;
161 : }
162 :
163 0 : body = GNUNET_JSON_PACK (
164 : GNUNET_JSON_pack_object_steal ("extensions",
165 : (json_t *) ped->extensions),
166 : GNUNET_JSON_pack_data_auto ("extensions_sig",
167 : &ped->extensions_sig));
168 :
169 0 : eh = TALER_EXCHANGE_curl_easy_get_ (ph->url);
170 0 : if ( (NULL == eh) ||
171 : (GNUNET_OK !=
172 0 : TALER_curl_easy_post (&ph->post_ctx,
173 : eh,
174 : body)) )
175 : {
176 0 : GNUNET_break (0);
177 0 : if (NULL != eh)
178 0 : curl_easy_cleanup (eh);
179 0 : json_decref (body);
180 0 : GNUNET_free (ph->url);
181 0 : return NULL;
182 : }
183 0 : json_decref (body);
184 0 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
185 : "Requesting URL '%s'\n",
186 : ph->url);
187 0 : ph->job = GNUNET_CURL_job_add2 (ctx,
188 : eh,
189 0 : ph->post_ctx.headers,
190 : &handle_post_extensions_finished,
191 : ph);
192 0 : if (NULL == ph->job)
193 : {
194 0 : TALER_EXCHANGE_management_post_extensions_cancel (ph);
195 0 : return NULL;
196 : }
197 0 : return ph;
198 : }
199 :
200 :
201 : void
202 0 : TALER_EXCHANGE_management_post_extensions_cancel (
203 : struct TALER_EXCHANGE_ManagementPostExtensionsHandle *ph)
204 : {
205 0 : if (NULL != ph->job)
206 : {
207 0 : GNUNET_CURL_job_cancel (ph->job);
208 0 : ph->job = NULL;
209 : }
210 0 : TALER_curl_easy_post_finished (&ph->post_ctx);
211 0 : GNUNET_free (ph->url);
212 0 : GNUNET_free (ph);
213 0 : }
|
