Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 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 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_account.c
19 : * @brief Implementation of the DELETE /private/account/$H_WIRE request of the merchant's HTTP API
20 : * @author Christian Grothoff
21 : */
22 : #include "platform.h"
23 : #include <curl/curl.h>
24 : #include <jansson.h>
25 : #include <microhttpd.h> /* just for HTTP status codes */
26 : #include <gnunet/gnunet_util_lib.h>
27 : #include <gnunet/gnunet_curl_lib.h>
28 : #include "taler_merchant_service.h"
29 : #include "merchant_api_curl_defaults.h"
30 : #include <taler/taler_json_lib.h>
31 : #include <taler/taler_signatures.h>
32 :
33 :
34 : /**
35 : * Handle for a DELETE /accounts/$ID operation.
36 : */
37 : struct TALER_MERCHANT_AccountDeleteHandle
38 : {
39 : /**
40 : * The url for this request.
41 : */
42 : char *url;
43 :
44 : /**
45 : * Handle for the request.
46 : */
47 : struct GNUNET_CURL_Job *job;
48 :
49 : /**
50 : * Function to call with the result.
51 : */
52 : TALER_MERCHANT_AccountDeleteCallback cb;
53 :
54 : /**
55 : * Closure for @a cb.
56 : */
57 : void *cb_cls;
58 :
59 : /**
60 : * Reference to the execution context.
61 : */
62 : struct GNUNET_CURL_Context *ctx;
63 :
64 : };
65 :
66 :
67 : /**
68 : * Function called when we're done processing the
69 : * HTTP DELETE /accounts/$H_WIRE request.
70 : *
71 : * @param cls the `struct TALER_MERCHANT_AccountDeleteHandle`
72 : * @param response_code HTTP response code, 0 on error
73 : * @param response response body, NULL if not in JSON
74 : */
75 : static void
76 0 : handle_delete_account_finished (void *cls,
77 : long response_code,
78 : const void *response)
79 : {
80 0 : struct TALER_MERCHANT_AccountDeleteHandle *adh = cls;
81 0 : const json_t *json = response;
82 0 : struct TALER_MERCHANT_AccountDeleteResponse adr = {
83 0 : .hr.http_status = (unsigned int) response_code,
84 : .hr.reply = json
85 : };
86 :
87 0 : adh->job = NULL;
88 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
89 : "Got /accounts/$H_WIRE response with status code %u\n",
90 : (unsigned int) response_code);
91 0 : switch (response_code)
92 : {
93 0 : case MHD_HTTP_NO_CONTENT:
94 0 : break;
95 0 : case MHD_HTTP_UNAUTHORIZED:
96 0 : adr.hr.ec = TALER_JSON_get_error_code (json);
97 0 : adr.hr.hint = TALER_JSON_get_error_hint (json);
98 : /* Nothing really to verify, merchant says we need to authenticate. */
99 0 : break;
100 0 : case MHD_HTTP_NOT_FOUND:
101 0 : break;
102 0 : default:
103 : /* unexpected response code */
104 0 : adr.hr.ec = TALER_JSON_get_error_code (json);
105 0 : adr.hr.hint = TALER_JSON_get_error_hint (json);
106 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
107 : "Unexpected response code %u/%d for DELETE /account/ID\n",
108 : (unsigned int) response_code,
109 : (int) adr.hr.ec);
110 0 : break;
111 : }
112 0 : adh->cb (adh->cb_cls,
113 : &adr);
114 0 : TALER_MERCHANT_account_delete_cancel (adh);
115 0 : }
116 :
117 :
118 : struct TALER_MERCHANT_AccountDeleteHandle *
119 0 : TALER_MERCHANT_account_delete (
120 : struct GNUNET_CURL_Context *ctx,
121 : const char *backend_url,
122 : const struct TALER_MerchantWireHashP *h_wire,
123 : TALER_MERCHANT_AccountDeleteCallback cb,
124 : void *cb_cls)
125 : {
126 : struct TALER_MERCHANT_AccountDeleteHandle *adh;
127 :
128 0 : adh = GNUNET_new (struct TALER_MERCHANT_AccountDeleteHandle);
129 0 : adh->ctx = ctx;
130 0 : adh->cb = cb;
131 0 : adh->cb_cls = cb_cls;
132 : {
133 : char h_wire_str[sizeof (*h_wire) * 2];
134 : char *path;
135 : char *end;
136 :
137 0 : end = GNUNET_STRINGS_data_to_string (h_wire,
138 : sizeof (*h_wire),
139 : h_wire_str,
140 : sizeof (h_wire_str));
141 0 : *end = '\0';
142 0 : GNUNET_asprintf (&path,
143 : "private/account/%s",
144 : h_wire_str);
145 0 : adh->url = TALER_url_join (backend_url,
146 : path,
147 : NULL);
148 0 : GNUNET_free (path);
149 : }
150 0 : if (NULL == adh->url)
151 : {
152 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
153 : "Could not construct request URL.\n");
154 0 : GNUNET_free (adh);
155 0 : return NULL;
156 : }
157 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
158 : "Requesting URL '%s'\n",
159 : adh->url);
160 : {
161 : CURL *eh;
162 :
163 0 : eh = TALER_MERCHANT_curl_easy_get_ (adh->url);
164 0 : GNUNET_assert (CURLE_OK ==
165 : curl_easy_setopt (eh,
166 : CURLOPT_CUSTOMREQUEST,
167 : MHD_HTTP_METHOD_DELETE));
168 0 : adh->job = GNUNET_CURL_job_add (ctx,
169 : eh,
170 : &handle_delete_account_finished,
171 : adh);
172 : }
173 0 : return adh;
174 : }
175 :
176 :
177 : void
178 0 : TALER_MERCHANT_account_delete_cancel (
179 : struct TALER_MERCHANT_AccountDeleteHandle *adh)
180 : {
181 0 : if (NULL != adh->job)
182 0 : GNUNET_CURL_job_cancel (adh->job);
183 0 : GNUNET_free (adh->url);
184 0 : GNUNET_free (adh);
185 0 : }
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