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-tokens-SERIAL.c
19 : * @brief Implementation of the DELETE /private/tokens/$SERIAL request
20 : * @author Christian Grothoff
21 : */
22 : #include "taler/platform.h"
23 : #include <curl/curl.h>
24 : #include <jansson.h>
25 : #include <microhttpd.h> /* just for HTTP status codes */
26 : #include <gnunet/gnunet_util_lib.h>
27 : #include <gnunet/gnunet_curl_lib.h>
28 : #include <taler/merchant/delete-private-tokens-SERIAL.h>
29 : #include "merchant_api_curl_defaults.h"
30 : #include <taler/taler_json_lib.h>
31 :
32 :
33 : /**
34 : * Handle for a DELETE /private/tokens/$SERIAL operation.
35 : */
36 : struct TALER_MERCHANT_DeletePrivateTokensSerialHandle
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_DeletePrivateTokensSerialCallback cb;
57 :
58 : /**
59 : * Closure for @a cb.
60 : */
61 : TALER_MERCHANT_DELETE_PRIVATE_TOKENS_SERIAL_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 instance.
70 : */
71 : char *instance_id;
72 :
73 : /**
74 : * Serial number of the token to delete.
75 : */
76 : uint64_t serial;
77 : };
78 :
79 :
80 : /**
81 : * Function called when we're done processing the
82 : * HTTP DELETE /private/tokens/$SERIAL request.
83 : *
84 : * @param cls the `struct TALER_MERCHANT_DeletePrivateTokensSerialHandle`
85 : * @param response_code HTTP response code, 0 on error
86 : * @param response response body, NULL if not in JSON
87 : */
88 : static void
89 0 : handle_delete_tokens_serial_finished (void *cls,
90 : long response_code,
91 : const void *response)
92 : {
93 0 : struct TALER_MERCHANT_DeletePrivateTokensSerialHandle *dtsh = cls;
94 0 : const json_t *json = response;
95 0 : struct TALER_MERCHANT_DeletePrivateTokensSerialResponse dtsr = {
96 0 : .hr.http_status = (unsigned int) response_code,
97 : .hr.reply = json
98 : };
99 :
100 0 : dtsh->job = NULL;
101 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
102 : "Got DELETE /instances/$ID/private/tokens/$SERIAL response with status code %u\n",
103 : (unsigned int) response_code);
104 0 : switch (response_code)
105 : {
106 0 : case MHD_HTTP_NO_CONTENT:
107 0 : break;
108 0 : case MHD_HTTP_UNAUTHORIZED:
109 0 : dtsr.hr.ec = TALER_JSON_get_error_code (json);
110 0 : dtsr.hr.hint = TALER_JSON_get_error_hint (json);
111 0 : break;
112 0 : case MHD_HTTP_FORBIDDEN:
113 0 : dtsr.hr.ec = TALER_JSON_get_error_code (json);
114 0 : dtsr.hr.hint = TALER_JSON_get_error_hint (json);
115 0 : break;
116 0 : case MHD_HTTP_NOT_FOUND:
117 0 : dtsr.hr.ec = TALER_JSON_get_error_code (json);
118 0 : dtsr.hr.hint = TALER_JSON_get_error_hint (json);
119 0 : break;
120 0 : default:
121 0 : dtsr.hr.ec = TALER_JSON_get_error_code (json);
122 0 : dtsr.hr.hint = TALER_JSON_get_error_hint (json);
123 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
124 : "Unexpected response code %u/%d for DELETE /instances/$ID/private/tokens/$SERIAL\n",
125 : (unsigned int) response_code,
126 : (int) dtsr.hr.ec);
127 0 : break;
128 : }
129 0 : dtsh->cb (dtsh->cb_cls,
130 : &dtsr);
131 0 : TALER_MERCHANT_delete_private_tokens_serial_cancel (dtsh);
132 0 : }
133 :
134 :
135 : struct TALER_MERCHANT_DeletePrivateTokensSerialHandle *
136 0 : TALER_MERCHANT_delete_private_tokens_serial_create (
137 : struct GNUNET_CURL_Context *ctx,
138 : const char *url,
139 : const char *instance_id,
140 : uint64_t serial)
141 : {
142 : struct TALER_MERCHANT_DeletePrivateTokensSerialHandle *dtsh;
143 :
144 0 : dtsh = GNUNET_new (struct TALER_MERCHANT_DeletePrivateTokensSerialHandle);
145 0 : dtsh->ctx = ctx;
146 0 : dtsh->base_url = GNUNET_strdup (url);
147 0 : dtsh->instance_id = GNUNET_strdup (instance_id);
148 0 : dtsh->serial = serial;
149 0 : return dtsh;
150 : }
151 :
152 :
153 : enum TALER_ErrorCode
154 0 : TALER_MERCHANT_delete_private_tokens_serial_start (
155 : struct TALER_MERCHANT_DeletePrivateTokensSerialHandle *dtsh,
156 : TALER_MERCHANT_DeletePrivateTokensSerialCallback cb,
157 : TALER_MERCHANT_DELETE_PRIVATE_TOKENS_SERIAL_RESULT_CLOSURE *cb_cls)
158 : {
159 : CURL *eh;
160 :
161 0 : dtsh->cb = cb;
162 0 : dtsh->cb_cls = cb_cls;
163 : {
164 : char *path;
165 :
166 0 : GNUNET_asprintf (&path,
167 : "instances/%s/private/tokens/%llu",
168 : dtsh->instance_id,
169 0 : (unsigned long long) dtsh->serial);
170 0 : dtsh->url = TALER_url_join (dtsh->base_url,
171 : path,
172 : NULL);
173 0 : GNUNET_free (path);
174 : }
175 0 : if (NULL == dtsh->url)
176 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
177 0 : eh = TALER_MERCHANT_curl_easy_get_ (dtsh->url);
178 0 : if (NULL == eh)
179 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
180 0 : GNUNET_assert (CURLE_OK ==
181 : curl_easy_setopt (eh,
182 : CURLOPT_CUSTOMREQUEST,
183 : MHD_HTTP_METHOD_DELETE));
184 0 : dtsh->job = GNUNET_CURL_job_add (dtsh->ctx,
185 : eh,
186 : &handle_delete_tokens_serial_finished,
187 : dtsh);
188 0 : if (NULL == dtsh->job)
189 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
190 0 : return TALER_EC_NONE;
191 : }
192 :
193 :
194 : void
195 0 : TALER_MERCHANT_delete_private_tokens_serial_cancel (
196 : struct TALER_MERCHANT_DeletePrivateTokensSerialHandle *dtsh)
197 : {
198 0 : if (NULL != dtsh->job)
199 : {
200 0 : GNUNET_CURL_job_cancel (dtsh->job);
201 0 : dtsh->job = NULL;
202 : }
203 0 : GNUNET_free (dtsh->url);
204 0 : GNUNET_free (dtsh->instance_id);
205 0 : GNUNET_free (dtsh->base_url);
206 0 : GNUNET_free (dtsh);
207 0 : }
208 :
209 :
210 : /* end of merchant_api_delete-private-tokens-SERIAL.c */
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