Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022 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_get_account.c
19 : * @brief Implementation of the GET /accounts/$ID request of the merchant's HTTP API
20 : * @author Priscilla HUANG
21 : */
22 : #include "platform.h"
23 : #include <curl/curl.h>
24 : #include <jansson.h>
25 : #include <microhttpd.h> /* just for HTTP status codes */
26 : #include <gnunet/gnunet_util_lib.h>
27 : #include <gnunet/gnunet_curl_lib.h>
28 : #include "taler_merchant_service.h"
29 : #include "merchant_api_curl_defaults.h"
30 : #include <taler/taler_json_lib.h>
31 : #include <taler/taler_signatures.h>
32 :
33 :
34 : /**
35 : * Handle for a GET /accounts/$ID operation.
36 : */
37 : struct TALER_MERCHANT_AccountGetHandle
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_AccountGetCallback 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 GET /accounts/$ID request.
70 : *
71 : * @param cls the `struct TALER_MERCHANT_AccountGetHandle`
72 : * @param response_code HTTP response code, 0 on error
73 : * @param response response body, NULL if not in JSON
74 : */
75 : static void
76 0 : handle_get_account_finished (void *cls,
77 : long response_code,
78 : const void *response)
79 : {
80 0 : struct TALER_MERCHANT_AccountGetHandle *tgh = cls;
81 0 : const json_t *json = response;
82 0 : struct TALER_MERCHANT_AccountGetResponse tgr = {
83 0 : .hr.http_status = (unsigned int) response_code,
84 : .hr.reply = json
85 : };
86 :
87 0 : tgh->job = NULL;
88 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
89 : "Got /accounts/$ID response with status code %u\n",
90 : (unsigned int) response_code);
91 0 : switch (response_code)
92 : {
93 0 : case MHD_HTTP_OK:
94 : {
95 : struct GNUNET_JSON_Specification spec[] = {
96 0 : GNUNET_JSON_spec_fixed_auto ("salt",
97 : &tgr.details.ok.ad.salt),
98 0 : GNUNET_JSON_spec_mark_optional (
99 : TALER_JSON_spec_web_url ("credit_facade_url",
100 : &tgr.details.ok.ad.credit_facade_url),
101 : NULL),
102 0 : TALER_JSON_spec_full_payto_uri ("payto_uri",
103 : &tgr.details.ok.ad.payto_uri),
104 0 : GNUNET_JSON_spec_fixed_auto ("h_wire",
105 : &tgr.details.ok.ad.h_wire),
106 0 : GNUNET_JSON_spec_bool ("active",
107 : &tgr.details.ok.ad.active),
108 0 : GNUNET_JSON_spec_end ()
109 : };
110 :
111 0 : if (GNUNET_OK ==
112 0 : GNUNET_JSON_parse (json,
113 : spec,
114 : NULL, NULL))
115 : {
116 0 : tgh->cb (tgh->cb_cls,
117 : &tgr);
118 0 : TALER_MERCHANT_account_get_cancel (tgh);
119 0 : return;
120 : }
121 0 : tgr.hr.http_status = 0;
122 0 : tgr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
123 0 : break;
124 : }
125 0 : case MHD_HTTP_UNAUTHORIZED:
126 0 : tgr.hr.ec = TALER_JSON_get_error_code (json);
127 0 : tgr.hr.hint = TALER_JSON_get_error_hint (json);
128 : /* Nothing really to verify, merchant says we need to authenticate. */
129 0 : break;
130 0 : case MHD_HTTP_NOT_FOUND:
131 0 : tgr.hr.ec = TALER_JSON_get_error_code (json);
132 0 : tgr.hr.hint = TALER_JSON_get_error_hint (json);
133 0 : break;
134 0 : default:
135 : /* unexpected response code */
136 0 : tgr.hr.ec = TALER_JSON_get_error_code (json);
137 0 : tgr.hr.hint = TALER_JSON_get_error_hint (json);
138 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
139 : "Unexpected response code %u/%d\n",
140 : (unsigned int) response_code,
141 : (int) tgr.hr.ec);
142 0 : break;
143 : }
144 0 : tgh->cb (tgh->cb_cls,
145 : &tgr);
146 0 : TALER_MERCHANT_account_get_cancel (tgh);
147 : }
148 :
149 :
150 : struct TALER_MERCHANT_AccountGetHandle *
151 0 : TALER_MERCHANT_account_get (
152 : struct GNUNET_CURL_Context *ctx,
153 : const char *backend_url,
154 : const char *instance_id,
155 : const struct TALER_MerchantWireHashP *h_wire,
156 : TALER_MERCHANT_AccountGetCallback cb,
157 : void *cb_cls)
158 : {
159 : struct TALER_MERCHANT_AccountGetHandle *tgh;
160 : CURL *eh;
161 :
162 0 : tgh = GNUNET_new (struct TALER_MERCHANT_AccountGetHandle);
163 0 : tgh->ctx = ctx;
164 0 : tgh->cb = cb;
165 0 : tgh->cb_cls = cb_cls;
166 : {
167 : char w_str[sizeof (*h_wire) * 2];
168 : char *path;
169 : char *end;
170 :
171 0 : end = GNUNET_STRINGS_data_to_string (h_wire,
172 : sizeof (*h_wire),
173 : w_str,
174 : sizeof (w_str));
175 0 : *end = '\0';
176 0 : GNUNET_asprintf (&path,
177 : "private/accounts/%s",
178 : w_str);
179 0 : tgh->url = TALER_url_join (backend_url,
180 : path,
181 : NULL);
182 0 : GNUNET_free (path);
183 : }
184 0 : if (NULL == tgh->url)
185 : {
186 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
187 : "Could not construct request URL.\n");
188 0 : GNUNET_free (tgh);
189 0 : return NULL;
190 : }
191 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
192 : "Requesting URL '%s'\n",
193 : tgh->url);
194 0 : eh = TALER_MERCHANT_curl_easy_get_ (tgh->url);
195 0 : tgh->job = GNUNET_CURL_job_add (ctx,
196 : eh,
197 : &handle_get_account_finished,
198 : tgh);
199 0 : return tgh;
200 : }
201 :
202 :
203 : void
204 0 : TALER_MERCHANT_account_get_cancel (
205 : struct TALER_MERCHANT_AccountGetHandle *tgh)
206 : {
207 0 : if (NULL != tgh->job)
208 0 : GNUNET_CURL_job_cancel (tgh->job);
209 0 : GNUNET_free (tgh->url);
210 0 : GNUNET_free (tgh);
211 0 : }
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