Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2025-2026 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU Lesser General Public License as published by the Free Software
7 : 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
15 : <http://www.gnu.org/licenses/>
16 : */
17 : /**
18 : * @file merchant_api_delete-private-units-UNIT-new.c
19 : * @brief Implementation of the DELETE /private/units/$UNIT request
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/platform.h"
23 : #include <curl/curl.h>
24 : #include <jansson.h>
25 : #include <microhttpd.h> /* just for HTTP status codes */
26 : #include <gnunet/gnunet_util_lib.h>
27 : #include <gnunet/gnunet_curl_lib.h>
28 : #include <taler/merchant/delete-private-units-UNIT.h>
29 : #include "merchant_api_curl_defaults.h"
30 : #include <taler/taler_json_lib.h>
31 :
32 :
33 : /**
34 : * Handle for a DELETE /private/units/$UNIT operation.
35 : */
36 : struct TALER_MERCHANT_DeletePrivateUnitHandle
37 : {
38 : /**
39 : * Base URL of the merchant backend.
40 : */
41 : char *base_url;
42 :
43 : /**
44 : * The full URL for this request.
45 : */
46 : char *url;
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_MERCHANT_DeletePrivateUnitCallback cb;
57 :
58 : /**
59 : * Closure for @a cb.
60 : */
61 : TALER_MERCHANT_DELETE_PRIVATE_UNIT_RESULT_CLOSURE *cb_cls;
62 :
63 : /**
64 : * Reference to the execution context.
65 : */
66 : struct GNUNET_CURL_Context *ctx;
67 :
68 : /**
69 : * Identifier of the unit to delete.
70 : */
71 : char *unit_id;
72 : };
73 :
74 :
75 : /**
76 : * Function called when we're done processing the
77 : * HTTP DELETE /private/units/$UNIT request.
78 : *
79 : * @param cls the `struct TALER_MERCHANT_DeletePrivateUnitHandle`
80 : * @param response_code HTTP response code, 0 on error
81 : * @param response response body, NULL if not in JSON
82 : */
83 : static void
84 0 : handle_delete_unit_finished (void *cls,
85 : long response_code,
86 : const void *response)
87 : {
88 0 : struct TALER_MERCHANT_DeletePrivateUnitHandle *duh = cls;
89 0 : const json_t *json = response;
90 0 : struct TALER_MERCHANT_DeletePrivateUnitResponse dur = {
91 0 : .hr.http_status = (unsigned int) response_code,
92 : .hr.reply = json
93 : };
94 :
95 0 : duh->job = NULL;
96 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
97 : "Got /private/units/$UNIT DELETE response with status code %u\n",
98 : (unsigned int) response_code);
99 0 : switch (response_code)
100 : {
101 0 : case MHD_HTTP_NO_CONTENT:
102 0 : break;
103 0 : case MHD_HTTP_UNAUTHORIZED:
104 0 : dur.hr.ec = TALER_JSON_get_error_code (json);
105 0 : dur.hr.hint = TALER_JSON_get_error_hint (json);
106 0 : break;
107 0 : case MHD_HTTP_NOT_FOUND:
108 0 : dur.hr.ec = TALER_JSON_get_error_code (json);
109 0 : dur.hr.hint = TALER_JSON_get_error_hint (json);
110 0 : break;
111 0 : case MHD_HTTP_CONFLICT:
112 0 : dur.hr.ec = TALER_JSON_get_error_code (json);
113 0 : dur.hr.hint = TALER_JSON_get_error_hint (json);
114 0 : break;
115 0 : default:
116 0 : dur.hr.ec = TALER_JSON_get_error_code (json);
117 0 : dur.hr.hint = TALER_JSON_get_error_hint (json);
118 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
119 : "Unexpected response code %u/%d for DELETE /private/units/$UNIT\n",
120 : (unsigned int) response_code,
121 : (int) dur.hr.ec);
122 0 : break;
123 : }
124 0 : duh->cb (duh->cb_cls,
125 : &dur);
126 0 : TALER_MERCHANT_delete_private_unit_cancel (duh);
127 0 : }
128 :
129 :
130 : struct TALER_MERCHANT_DeletePrivateUnitHandle *
131 0 : TALER_MERCHANT_delete_private_unit_create (
132 : struct GNUNET_CURL_Context *ctx,
133 : const char *url,
134 : const char *unit_id)
135 : {
136 : struct TALER_MERCHANT_DeletePrivateUnitHandle *duh;
137 :
138 0 : duh = GNUNET_new (struct TALER_MERCHANT_DeletePrivateUnitHandle);
139 0 : duh->ctx = ctx;
140 0 : duh->base_url = GNUNET_strdup (url);
141 0 : duh->unit_id = GNUNET_strdup (unit_id);
142 0 : return duh;
143 : }
144 :
145 :
146 : enum TALER_ErrorCode
147 0 : TALER_MERCHANT_delete_private_unit_start (
148 : struct TALER_MERCHANT_DeletePrivateUnitHandle *duh,
149 : TALER_MERCHANT_DeletePrivateUnitCallback cb,
150 : TALER_MERCHANT_DELETE_PRIVATE_UNIT_RESULT_CLOSURE *cb_cls)
151 : {
152 : CURL *eh;
153 :
154 0 : duh->cb = cb;
155 0 : duh->cb_cls = cb_cls;
156 : {
157 : char *path;
158 :
159 0 : GNUNET_asprintf (&path,
160 : "private/units/%s",
161 : duh->unit_id);
162 0 : duh->url = TALER_url_join (duh->base_url,
163 : path,
164 : NULL);
165 0 : GNUNET_free (path);
166 : }
167 0 : if (NULL == duh->url)
168 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
169 0 : eh = TALER_MERCHANT_curl_easy_get_ (duh->url);
170 0 : if (NULL == eh)
171 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
172 0 : GNUNET_assert (CURLE_OK ==
173 : curl_easy_setopt (eh,
174 : CURLOPT_CUSTOMREQUEST,
175 : MHD_HTTP_METHOD_DELETE));
176 0 : duh->job = GNUNET_CURL_job_add (duh->ctx,
177 : eh,
178 : &handle_delete_unit_finished,
179 : duh);
180 0 : if (NULL == duh->job)
181 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
182 0 : return TALER_EC_NONE;
183 : }
184 :
185 :
186 : void
187 0 : TALER_MERCHANT_delete_private_unit_cancel (
188 : struct TALER_MERCHANT_DeletePrivateUnitHandle *duh)
189 : {
190 0 : if (NULL != duh->job)
191 : {
192 0 : GNUNET_CURL_job_cancel (duh->job);
193 0 : duh->job = NULL;
194 : }
195 0 : GNUNET_free (duh->url);
196 0 : GNUNET_free (duh->unit_id);
197 0 : GNUNET_free (duh->base_url);
198 0 : GNUNET_free (duh);
199 0 : }
200 :
201 :
202 : /* end of merchant_api_delete-private-units-UNIT-new.c */
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