1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/*
This file is part of TALER
Copyright (C) 2022 Taler Systems SA
TALER is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1,
or (at your option) any later version.
TALER is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with TALER; see the file COPYING.LGPL.
If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file merchant_api_post_otp_devices.c
* @brief Implementation of the POST /otp-devices request
* of the merchant's HTTP API
* @author Christian Grothoff
*/
#include "platform.h"
#include <curl/curl.h>
#include <jansson.h>
#include <microhttpd.h> /* just for HTTP status codes */
#include <gnunet/gnunet_util_lib.h>
#include "taler_merchant_service.h"
#include "merchant_api_curl_defaults.h"
#include "merchant_api_common.h"
#include <taler/taler_json_lib.h>
#include <taler/taler_curl_lib.h>
/**
* Handle for a POST /otp-devices/$ID operation.
*/
struct TALER_MERCHANT_OtpDevicesPostHandle
{
/**
* The url for this request.
*/
char *url;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_MERCHANT_OtpDevicesPostCallback cb;
/**
* Closure for @a cb.
*/
void *cb_cls;
/**
* Reference to the execution context.
*/
struct GNUNET_CURL_Context *ctx;
/**
* Minor context that holds body and headers.
*/
struct TALER_CURL_PostContext post_ctx;
};
/**
* Function called when we're done processing the
* HTTP POST /otp-devices request.
*
* @param cls the `struct TALER_MERCHANT_OtpDevicesPostHandle`
* @param response_code HTTP response code, 0 on error
* @param response response body, NULL if not in JSON
*/
static void
handle_post_otp_devices_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_MERCHANT_OtpDevicesPostHandle *tph = cls;
const json_t *json = response;
struct TALER_MERCHANT_HttpResponse hr = {
.http_status = (unsigned int) response_code,
.reply = json
};
tph->job = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"POST /otp-devices completed with response code %u\n",
(unsigned int) response_code);
switch (response_code)
{
case 0:
hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
case MHD_HTTP_NO_CONTENT:
break;
case MHD_HTTP_BAD_REQUEST:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* This should never happen, either us
* or the merchant is buggy (or API version conflict);
* just pass JSON reply to the application */
break;
case MHD_HTTP_UNAUTHORIZED:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Nothing really to verify, merchant says we need to authenticate. */
break;
case MHD_HTTP_FORBIDDEN:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Nothing really to verify, merchant says we tried to abort the payment
* after it was successful. We should pass the JSON reply to the
* application */
break;
case MHD_HTTP_NOT_FOUND:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Nothing really to verify, this should never
happen, we should pass the JSON reply to the
application */
break;
case MHD_HTTP_CONFLICT:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
break;
case MHD_HTTP_INTERNAL_SERVER_ERROR:
hr.ec = TALER_JSON_get_error_code (json);
hr.hint = TALER_JSON_get_error_hint (json);
/* Server had an internal issue; we should retry,
but this API leaves this to the application */
break;
default:
TALER_MERCHANT_parse_error_details_ (json,
response_code,
&hr);
/* unexpected response code */
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u/%d\n",
(unsigned int) response_code,
(int) hr.ec);
GNUNET_break_op (0);
break;
}
tph->cb (tph->cb_cls,
&hr);
TALER_MERCHANT_otp_devices_post_cancel (tph);
}
struct TALER_MERCHANT_OtpDevicesPostHandle *
TALER_MERCHANT_otp_devices_post (
struct GNUNET_CURL_Context *ctx,
const char *backend_url,
const char *otp_device_id,
const char *otp_device_description,
const char *otp_key,
enum TALER_MerchantConfirmationAlgorithm otp_algorithm,
uint64_t otp_ctr,
TALER_MERCHANT_OtpDevicesPostCallback cb,
void *cb_cls)
{
struct TALER_MERCHANT_OtpDevicesPostHandle *tph;
json_t *req_obj;
req_obj = GNUNET_JSON_PACK (
GNUNET_JSON_pack_string ("otp_device_id",
otp_device_id),
GNUNET_JSON_pack_string ("otp_device_description",
otp_device_description),
GNUNET_JSON_pack_uint64 ("otp_algorithm",
(uint32_t) otp_algorithm),
GNUNET_JSON_pack_allow_null (
GNUNET_JSON_pack_string ("otp_key",
otp_key)),
GNUNET_JSON_pack_uint64 ("otp_ctr",
otp_ctr));
tph = GNUNET_new (struct TALER_MERCHANT_OtpDevicesPostHandle);
tph->ctx = ctx;
tph->cb = cb;
tph->cb_cls = cb_cls;
tph->url = TALER_url_join (backend_url,
"private/otp-devices",
NULL);
if (NULL == tph->url)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not construct request URL.\n");
json_decref (req_obj);
GNUNET_free (tph);
return NULL;
}
{
CURL *eh;
eh = TALER_MERCHANT_curl_easy_get_ (tph->url);
GNUNET_assert (GNUNET_OK ==
TALER_curl_easy_post (&tph->post_ctx,
eh,
req_obj));
json_decref (req_obj);
tph->job = GNUNET_CURL_job_add2 (ctx,
eh,
tph->post_ctx.headers,
&handle_post_otp_devices_finished,
tph);
GNUNET_assert (NULL != tph->job);
}
return tph;
}
void
TALER_MERCHANT_otp_devices_post_cancel (
struct TALER_MERCHANT_OtpDevicesPostHandle *tph)
{
if (NULL != tph->job)
{
GNUNET_CURL_job_cancel (tph->job);
tph->job = NULL;
}
TALER_curl_easy_post_finished (&tph->post_ctx);
GNUNET_free (tph->url);
GNUNET_free (tph);
}
/* end of merchant_api_post_otp_devices.c */
|
