Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2015-2021 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_auditor_disable.c
19 : * @brief functions to disable an auditor
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/platform.h"
23 : #include "taler/taler_json_lib.h"
24 : #include <gnunet/gnunet_curl_lib.h>
25 : #include <microhttpd.h>
26 : #include "taler/taler_exchange_service.h"
27 : #include "exchange_api_curl_defaults.h"
28 : #include "taler/taler_signatures.h"
29 : #include "taler/taler_curl_lib.h"
30 : #include "taler/taler_json_lib.h"
31 :
32 : /**
33 : * @brief Handle for a POST /management/auditors/$AUDITOR_PUB/disable request.
34 : */
35 : struct TALER_EXCHANGE_ManagementAuditorDisableHandle
36 : {
37 :
38 : /**
39 : * The url for this request.
40 : */
41 : char *url;
42 :
43 : /**
44 : * Minor context that holds body and headers.
45 : */
46 : struct TALER_CURL_PostContext post_ctx;
47 :
48 : /**
49 : * Handle for the request.
50 : */
51 : struct GNUNET_CURL_Job *job;
52 :
53 : /**
54 : * Function to call with the result.
55 : */
56 : TALER_EXCHANGE_ManagementAuditorDisableCallback cb;
57 :
58 : /**
59 : * Closure for @a cb.
60 : */
61 : void *cb_cls;
62 :
63 : /**
64 : * Reference to the execution context.
65 : */
66 : struct GNUNET_CURL_Context *ctx;
67 : };
68 :
69 :
70 : /**
71 : * Function called when we're done processing the
72 : * HTTP /management/auditors/%s/disable request.
73 : *
74 : * @param cls the `struct TALER_EXCHANGE_ManagementAuditorDisableHandle *`
75 : * @param response_code HTTP response code, 0 on error
76 : * @param response response body, NULL if not in JSON
77 : */
78 : static void
79 8 : handle_auditor_disable_finished (void *cls,
80 : long response_code,
81 : const void *response)
82 : {
83 8 : struct TALER_EXCHANGE_ManagementAuditorDisableHandle *ah = cls;
84 8 : const json_t *json = response;
85 8 : struct TALER_EXCHANGE_ManagementAuditorDisableResponse adr = {
86 8 : .hr.http_status = (unsigned int) response_code,
87 : .hr.reply = json
88 : };
89 :
90 8 : ah->job = NULL;
91 8 : switch (response_code)
92 : {
93 6 : case MHD_HTTP_NO_CONTENT:
94 6 : break;
95 2 : case MHD_HTTP_FORBIDDEN:
96 2 : adr.hr.ec = TALER_JSON_get_error_code (json);
97 2 : adr.hr.hint = TALER_JSON_get_error_hint (json);
98 2 : break;
99 0 : case MHD_HTTP_NOT_FOUND:
100 0 : adr.hr.ec = TALER_JSON_get_error_code (json);
101 0 : adr.hr.hint = TALER_JSON_get_error_hint (json);
102 0 : break;
103 0 : case MHD_HTTP_CONFLICT:
104 0 : adr.hr.ec = TALER_JSON_get_error_code (json);
105 0 : adr.hr.hint = TALER_JSON_get_error_hint (json);
106 0 : break;
107 0 : default:
108 : /* unexpected response code */
109 0 : GNUNET_break_op (0);
110 0 : adr.hr.ec = TALER_JSON_get_error_code (json);
111 0 : adr.hr.hint = TALER_JSON_get_error_hint (json);
112 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
113 : "Unexpected response code %u/%d for exchange management auditor disable\n",
114 : (unsigned int) response_code,
115 : (int) adr.hr.ec);
116 0 : break;
117 : }
118 8 : if (NULL != ah->cb)
119 : {
120 8 : ah->cb (ah->cb_cls,
121 : &adr);
122 8 : ah->cb = NULL;
123 : }
124 8 : TALER_EXCHANGE_management_disable_auditor_cancel (ah);
125 8 : }
126 :
127 :
128 : struct TALER_EXCHANGE_ManagementAuditorDisableHandle *
129 8 : TALER_EXCHANGE_management_disable_auditor (
130 : struct GNUNET_CURL_Context *ctx,
131 : const char *url,
132 : const struct TALER_AuditorPublicKeyP *auditor_pub,
133 : struct GNUNET_TIME_Timestamp validity_end,
134 : const struct TALER_MasterSignatureP *master_sig,
135 : TALER_EXCHANGE_ManagementAuditorDisableCallback cb,
136 : void *cb_cls)
137 : {
138 : struct TALER_EXCHANGE_ManagementAuditorDisableHandle *ah;
139 : CURL *eh;
140 : json_t *body;
141 :
142 8 : ah = GNUNET_new (struct TALER_EXCHANGE_ManagementAuditorDisableHandle);
143 8 : ah->cb = cb;
144 8 : ah->cb_cls = cb_cls;
145 8 : ah->ctx = ctx;
146 : {
147 : char epub_str[sizeof (*auditor_pub) * 2];
148 : char arg_str[sizeof (epub_str) + 64];
149 : char *end;
150 :
151 8 : end = GNUNET_STRINGS_data_to_string (auditor_pub,
152 : sizeof (*auditor_pub),
153 : epub_str,
154 : sizeof (epub_str));
155 8 : *end = '\0';
156 8 : GNUNET_snprintf (arg_str,
157 : sizeof (arg_str),
158 : "management/auditors/%s/disable",
159 : epub_str);
160 8 : ah->url = TALER_url_join (url,
161 : arg_str,
162 : NULL);
163 : }
164 8 : if (NULL == ah->url)
165 : {
166 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
167 : "Could not construct request URL.\n");
168 0 : GNUNET_free (ah);
169 0 : return NULL;
170 : }
171 8 : body = GNUNET_JSON_PACK (
172 : GNUNET_JSON_pack_data_auto ("master_sig",
173 : master_sig),
174 : GNUNET_JSON_pack_timestamp ("validity_end",
175 : validity_end));
176 8 : eh = TALER_EXCHANGE_curl_easy_get_ (ah->url);
177 16 : if ( (NULL == eh) ||
178 : (GNUNET_OK !=
179 8 : TALER_curl_easy_post (&ah->post_ctx,
180 : eh,
181 : body)))
182 : {
183 0 : GNUNET_break (0);
184 0 : if (NULL != eh)
185 0 : curl_easy_cleanup (eh);
186 0 : json_decref (body);
187 0 : GNUNET_free (ah->url);
188 0 : return NULL;
189 : }
190 8 : json_decref (body);
191 8 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
192 : "Requesting URL '%s'\n",
193 : ah->url);
194 16 : ah->job = GNUNET_CURL_job_add2 (ctx,
195 : eh,
196 8 : ah->post_ctx.headers,
197 : &handle_auditor_disable_finished,
198 : ah);
199 8 : if (NULL == ah->job)
200 : {
201 0 : TALER_EXCHANGE_management_disable_auditor_cancel (ah);
202 0 : return NULL;
203 : }
204 8 : return ah;
205 : }
206 :
207 :
208 : void
209 8 : TALER_EXCHANGE_management_disable_auditor_cancel (
210 : struct TALER_EXCHANGE_ManagementAuditorDisableHandle *ah)
211 : {
212 8 : if (NULL != ah->job)
213 : {
214 0 : GNUNET_CURL_job_cancel (ah->job);
215 0 : ah->job = NULL;
216 : }
217 8 : TALER_curl_easy_post_finished (&ah->post_ctx);
218 8 : GNUNET_free (ah->url);
219 8 : GNUNET_free (ah);
220 8 : }
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