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
6 : it under the terms of the GNU Lesser General Public License as
7 : published by the Free Software Foundation; either version 2.1,
8 : or (at your option) any later version.
9 :
10 : TALER is distributed in the hope that it will be useful,
11 : but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 : GNU Lesser General Public License for more details.
14 :
15 : You should have received a copy of the GNU Lesser General
16 : Public License along with TALER; see the file COPYING.LGPL.
17 : If not, see <http://www.gnu.org/licenses/>
18 : */
19 : /**
20 : * @file merchant_api_post_account.c
21 : * @brief Implementation of the POST /account request
22 : * of the merchant's HTTP API
23 : * @author Christian Grothoff
24 : */
25 : #include "platform.h"
26 : #include <curl/curl.h>
27 : #include <jansson.h>
28 : #include <microhttpd.h> /* just for HTTP status codes */
29 : #include <gnunet/gnunet_util_lib.h>
30 : #include "taler_merchant_service.h"
31 : #include "merchant_api_curl_defaults.h"
32 : #include "merchant_api_common.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 :
36 :
37 : /**
38 : * Handle for a POST /private/accounts operation.
39 : */
40 : struct TALER_MERCHANT_AccountsPostHandle
41 : {
42 :
43 : /**
44 : * The 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_AccountsPostCallback 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 : * Minor context that holds body and headers.
70 : */
71 : struct TALER_CURL_PostContext post_ctx;
72 :
73 : };
74 :
75 :
76 : /**
77 : * Function called when we're done processing the
78 : * HTTP POST /account request.
79 : *
80 : * @param cls the `struct TALER_MERCHANT_AccountPostHandle`
81 : * @param response_code HTTP response code, 0 on error
82 : * @param response response body, NULL if not in JSON
83 : */
84 : static void
85 10 : handle_post_account_finished (void *cls,
86 : long response_code,
87 : const void *response)
88 : {
89 10 : struct TALER_MERCHANT_AccountsPostHandle *aph = cls;
90 10 : const json_t *json = response;
91 10 : struct TALER_MERCHANT_AccountsPostResponse apr = {
92 10 : .hr.http_status = (unsigned int) response_code,
93 : .hr.reply = json
94 : };
95 :
96 10 : aph->job = NULL;
97 10 : GNUNET_log (GNUNET_ERROR_TYPE_INFO,
98 : "POST /accounts completed with response code %u\n",
99 : (unsigned int) response_code);
100 10 : switch (response_code)
101 : {
102 0 : case 0:
103 0 : apr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
104 0 : break;
105 10 : case MHD_HTTP_OK:
106 : {
107 : struct GNUNET_JSON_Specification spec[] = {
108 10 : GNUNET_JSON_spec_fixed_auto ("h_wire",
109 : &apr.details.ok.h_wire),
110 10 : GNUNET_JSON_spec_fixed_auto ("salt",
111 : &apr.details.ok.salt),
112 10 : GNUNET_JSON_spec_end ()
113 : };
114 :
115 10 : if (GNUNET_OK !=
116 10 : GNUNET_JSON_parse (json,
117 : spec,
118 : NULL, NULL))
119 : {
120 0 : GNUNET_break_op (0);
121 0 : apr.hr.http_status = 0;
122 0 : apr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
123 0 : break;
124 : }
125 : }
126 10 : break;
127 0 : case MHD_HTTP_BAD_REQUEST:
128 0 : GNUNET_break_op (0);
129 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
130 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
131 : /* This should never happen, either us
132 : * or the merchant is buggy (or API version conflict);
133 : * just pass JSON reply to the application */
134 0 : break;
135 0 : case MHD_HTTP_FORBIDDEN:
136 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
137 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
138 0 : break;
139 0 : case MHD_HTTP_NOT_FOUND:
140 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
141 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
142 : /* Nothing really to verify, this should never
143 : happen, we should pass the JSON reply to the
144 : application */
145 0 : break;
146 0 : case MHD_HTTP_CONFLICT:
147 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
148 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
149 0 : break;
150 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
151 0 : apr.hr.ec = TALER_JSON_get_error_code (json);
152 0 : apr.hr.hint = TALER_JSON_get_error_hint (json);
153 : /* Server had an internal issue; we should retry,
154 : but this API leaves this to the application */
155 0 : break;
156 0 : default:
157 0 : TALER_MERCHANT_parse_error_details_ (json,
158 : response_code,
159 : &apr.hr);
160 : /* unexpected response code */
161 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
162 : "Unexpected response code %u/%d\n",
163 : (unsigned int) response_code,
164 : (int) apr.hr.ec);
165 0 : GNUNET_break_op (0);
166 0 : break;
167 : }
168 10 : aph->cb (aph->cb_cls,
169 : &apr);
170 10 : TALER_MERCHANT_accounts_post_cancel (aph);
171 10 : }
172 :
173 :
174 : struct TALER_MERCHANT_AccountsPostHandle *
175 10 : TALER_MERCHANT_accounts_post (
176 : struct GNUNET_CURL_Context *ctx,
177 : const char *backend_url,
178 : struct TALER_FullPayto payto_uri,
179 : const char *credit_facade_url,
180 : const json_t *credit_facade_credentials,
181 : TALER_MERCHANT_AccountsPostCallback cb,
182 : void *cb_cls)
183 : {
184 : struct TALER_MERCHANT_AccountsPostHandle *aph;
185 : json_t *req_obj;
186 :
187 10 : req_obj = GNUNET_JSON_PACK (
188 : TALER_JSON_pack_full_payto (
189 : "payto_uri",
190 : payto_uri),
191 : GNUNET_JSON_pack_allow_null (
192 : GNUNET_JSON_pack_string (
193 : "credit_facade_url",
194 : credit_facade_url)),
195 : GNUNET_JSON_pack_allow_null (
196 : GNUNET_JSON_pack_object_incref (
197 : "credit_facade_credentials",
198 : (json_t *) credit_facade_credentials))
199 : );
200 10 : aph = GNUNET_new (struct TALER_MERCHANT_AccountsPostHandle);
201 10 : aph->ctx = ctx;
202 10 : aph->cb = cb;
203 10 : aph->cb_cls = cb_cls;
204 10 : aph->url = TALER_url_join (backend_url,
205 : "private/accounts",
206 : NULL);
207 10 : if (NULL == aph->url)
208 : {
209 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
210 : "Could not construct request URL.\n");
211 0 : json_decref (req_obj);
212 0 : GNUNET_free (aph);
213 0 : return NULL;
214 : }
215 : {
216 : CURL *eh;
217 :
218 10 : eh = TALER_MERCHANT_curl_easy_get_ (aph->url);
219 10 : GNUNET_assert (GNUNET_OK ==
220 : TALER_curl_easy_post (&aph->post_ctx,
221 : eh,
222 : req_obj));
223 10 : json_decref (req_obj);
224 20 : aph->job = GNUNET_CURL_job_add2 (ctx,
225 : eh,
226 10 : aph->post_ctx.headers,
227 : &handle_post_account_finished,
228 : aph);
229 10 : GNUNET_assert (NULL != aph->job);
230 : }
231 10 : return aph;
232 : }
233 :
234 :
235 : void
236 10 : TALER_MERCHANT_accounts_post_cancel (
237 : struct TALER_MERCHANT_AccountsPostHandle *aph)
238 : {
239 10 : if (NULL != aph->job)
240 : {
241 0 : GNUNET_CURL_job_cancel (aph->job);
242 0 : aph->job = NULL;
243 : }
244 10 : TALER_curl_easy_post_finished (&aph->post_ctx);
245 10 : GNUNET_free (aph->url);
246 10 : GNUNET_free (aph);
247 10 : }
248 :
249 :
250 : /* end of merchant_api_post_account.c */
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