Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2015-2026 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_post-management-auditors.c
19 : * @brief functions to enable an auditor
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/taler_json_lib.h"
23 : #include <gnunet/gnunet_curl_lib.h>
24 : #include <microhttpd.h>
25 : #include "taler/exchange/post-management-auditors.h"
26 : #include "exchange_api_curl_defaults.h"
27 : #include "taler/taler_curl_lib.h"
28 :
29 :
30 : /**
31 : * @brief Handle for a POST /management/auditors request.
32 : */
33 : struct TALER_EXCHANGE_PostManagementAuditorsHandle
34 : {
35 :
36 : /**
37 : * The base URL for this request.
38 : */
39 : char *base_url;
40 :
41 : /**
42 : * The full URL for this request, set during _start.
43 : */
44 : char *url;
45 :
46 : /**
47 : * Minor context that holds body and headers.
48 : */
49 : struct TALER_CURL_PostContext post_ctx;
50 :
51 : /**
52 : * Handle for the request.
53 : */
54 : struct GNUNET_CURL_Job *job;
55 :
56 : /**
57 : * Function to call with the result.
58 : */
59 : TALER_EXCHANGE_PostManagementAuditorsCallback cb;
60 :
61 : /**
62 : * Closure for @a cb.
63 : */
64 : TALER_EXCHANGE_POST_MANAGEMENT_AUDITORS_RESULT_CLOSURE *cb_cls;
65 :
66 : /**
67 : * Reference to the execution context.
68 : */
69 : struct GNUNET_CURL_Context *ctx;
70 :
71 : /**
72 : * Public signing key of the auditor.
73 : */
74 : struct TALER_AuditorPublicKeyP auditor_pub;
75 :
76 : /**
77 : * Base URL of the auditor.
78 : */
79 : char *auditor_url;
80 :
81 : /**
82 : * Human-readable name of the auditor.
83 : */
84 : char *auditor_name;
85 :
86 : /**
87 : * When was this decided?
88 : */
89 : struct GNUNET_TIME_Timestamp validity_start;
90 :
91 : /**
92 : * Signature affirming the auditor addition.
93 : */
94 : struct TALER_MasterSignatureP master_sig;
95 :
96 : };
97 :
98 :
99 : /**
100 : * Function called when we're done processing the
101 : * HTTP POST /management/auditors request.
102 : *
103 : * @param cls the `struct TALER_EXCHANGE_PostManagementAuditorsHandle`
104 : * @param response_code HTTP response code, 0 on error
105 : * @param response response body, NULL if not in JSON
106 : */
107 : static void
108 10 : handle_auditors_finished (void *cls,
109 : long response_code,
110 : const void *response)
111 : {
112 10 : struct TALER_EXCHANGE_PostManagementAuditorsHandle *pmah = cls;
113 10 : const json_t *json = response;
114 10 : struct TALER_EXCHANGE_PostManagementAuditorsResponse res = {
115 10 : .hr.http_status = (unsigned int) response_code,
116 : .hr.reply = json
117 : };
118 :
119 10 : pmah->job = NULL;
120 10 : switch (response_code)
121 : {
122 8 : case MHD_HTTP_NO_CONTENT:
123 8 : break;
124 2 : case MHD_HTTP_FORBIDDEN:
125 2 : res.hr.ec = TALER_JSON_get_error_code (json);
126 2 : res.hr.hint = TALER_JSON_get_error_hint (json);
127 2 : break;
128 0 : case MHD_HTTP_CONFLICT:
129 0 : res.hr.ec = TALER_JSON_get_error_code (json);
130 0 : res.hr.hint = TALER_JSON_get_error_hint (json);
131 0 : break;
132 0 : default:
133 : /* unexpected response code */
134 0 : GNUNET_break_op (0);
135 0 : res.hr.ec = TALER_JSON_get_error_code (json);
136 0 : res.hr.hint = TALER_JSON_get_error_hint (json);
137 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
138 : "Unexpected response code %u/%d for exchange management auditor enable\n",
139 : (unsigned int) response_code,
140 : (int) res.hr.ec);
141 0 : break;
142 : }
143 10 : if (NULL != pmah->cb)
144 : {
145 10 : pmah->cb (pmah->cb_cls,
146 : &res);
147 10 : pmah->cb = NULL;
148 : }
149 10 : TALER_EXCHANGE_post_management_auditors_cancel (pmah);
150 10 : }
151 :
152 :
153 : struct TALER_EXCHANGE_PostManagementAuditorsHandle *
154 10 : TALER_EXCHANGE_post_management_auditors_create (
155 : struct GNUNET_CURL_Context *ctx,
156 : const char *url,
157 : const struct TALER_AuditorPublicKeyP *auditor_pub,
158 : const char *auditor_url,
159 : const char *auditor_name,
160 : struct GNUNET_TIME_Timestamp validity_start,
161 : const struct TALER_MasterSignatureP *master_sig)
162 : {
163 : struct TALER_EXCHANGE_PostManagementAuditorsHandle *pmah;
164 :
165 10 : pmah = GNUNET_new (struct TALER_EXCHANGE_PostManagementAuditorsHandle);
166 10 : pmah->ctx = ctx;
167 10 : pmah->base_url = GNUNET_strdup (url);
168 10 : pmah->auditor_pub = *auditor_pub;
169 10 : pmah->auditor_url = GNUNET_strdup (auditor_url);
170 10 : pmah->auditor_name = GNUNET_strdup (auditor_name);
171 10 : pmah->validity_start = validity_start;
172 10 : pmah->master_sig = *master_sig;
173 10 : return pmah;
174 : }
175 :
176 :
177 : enum TALER_ErrorCode
178 10 : TALER_EXCHANGE_post_management_auditors_start (
179 : struct TALER_EXCHANGE_PostManagementAuditorsHandle *pmah,
180 : TALER_EXCHANGE_PostManagementAuditorsCallback cb,
181 : TALER_EXCHANGE_POST_MANAGEMENT_AUDITORS_RESULT_CLOSURE *cb_cls)
182 : {
183 : CURL *eh;
184 : json_t *body;
185 :
186 10 : pmah->cb = cb;
187 10 : pmah->cb_cls = cb_cls;
188 10 : pmah->url = TALER_url_join (pmah->base_url,
189 : "management/auditors",
190 : NULL);
191 10 : if (NULL == pmah->url)
192 : {
193 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
194 : "Could not construct request URL.\n");
195 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
196 : }
197 10 : body = GNUNET_JSON_PACK (
198 : GNUNET_JSON_pack_string ("auditor_url",
199 : pmah->auditor_url),
200 : GNUNET_JSON_pack_string ("auditor_name",
201 : pmah->auditor_name),
202 : GNUNET_JSON_pack_data_auto ("auditor_pub",
203 : &pmah->auditor_pub),
204 : GNUNET_JSON_pack_data_auto ("master_sig",
205 : &pmah->master_sig),
206 : GNUNET_JSON_pack_timestamp ("validity_start",
207 : pmah->validity_start));
208 10 : eh = TALER_EXCHANGE_curl_easy_get_ (pmah->url);
209 20 : if ( (NULL == eh) ||
210 : (GNUNET_OK !=
211 10 : TALER_curl_easy_post (&pmah->post_ctx,
212 : eh,
213 : body)) )
214 : {
215 0 : GNUNET_break (0);
216 0 : if (NULL != eh)
217 0 : curl_easy_cleanup (eh);
218 0 : json_decref (body);
219 0 : GNUNET_free (pmah->url);
220 0 : pmah->url = NULL;
221 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
222 : }
223 10 : json_decref (body);
224 10 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
225 : "Requesting URL '%s'\n",
226 : pmah->url);
227 20 : pmah->job = GNUNET_CURL_job_add2 (pmah->ctx,
228 : eh,
229 10 : pmah->post_ctx.headers,
230 : &handle_auditors_finished,
231 : pmah);
232 10 : if (NULL == pmah->job)
233 : {
234 0 : TALER_curl_easy_post_finished (&pmah->post_ctx);
235 0 : GNUNET_free (pmah->url);
236 0 : pmah->url = NULL;
237 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
238 : }
239 10 : return TALER_EC_NONE;
240 : }
241 :
242 :
243 : void
244 10 : TALER_EXCHANGE_post_management_auditors_cancel (
245 : struct TALER_EXCHANGE_PostManagementAuditorsHandle *pmah)
246 : {
247 10 : if (NULL != pmah->job)
248 : {
249 0 : GNUNET_CURL_job_cancel (pmah->job);
250 0 : pmah->job = NULL;
251 : }
252 10 : TALER_curl_easy_post_finished (&pmah->post_ctx);
253 10 : GNUNET_free (pmah->auditor_url);
254 10 : GNUNET_free (pmah->auditor_name);
255 10 : GNUNET_free (pmah->url);
256 10 : GNUNET_free (pmah->base_url);
257 10 : GNUNET_free (pmah);
258 10 : }
259 :
260 :
261 : /* end of exchange_api_post-management-auditors.c */
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