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
|
/*
This file is part of TALER
Copyright (C) 2021 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>
*/
/**
* @file lib/exchange_api_kyc_wallet.c
* @brief Implementation of the /kyc-wallet request
* @author Christian Grothoff
*/
#include "platform.h"
#include <microhttpd.h> /* just for HTTP wallet codes */
#include <gnunet/gnunet_util_lib.h>
#include <gnunet/gnunet_curl_lib.h>
#include "taler_exchange_service.h"
#include "taler_json_lib.h"
#include "exchange_api_handle.h"
#include "taler_signatures.h"
#include "exchange_api_curl_defaults.h"
/**
* @brief A ``/kyc-wallet`` handle
*/
struct TALER_EXCHANGE_KycWalletHandle
{
/**
* Context for #TEH_curl_easy_post(). Keeps the data that must
* persist for Curl to make the upload.
*/
struct TALER_CURL_PostContext ctx;
/**
* The url for this request.
*/
char *url;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_EXCHANGE_KycWalletCallback cb;
/**
* Closure for @e cb.
*/
void *cb_cls;
};
/**
* Function called when we're done processing the
* HTTP /kyc-wallet request.
*
* @param cls the `struct TALER_EXCHANGE_KycWalletHandle`
* @param response_code HTTP response code, 0 on error
* @param response parsed JSON result, NULL on error
*/
static void
handle_kyc_wallet_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_EXCHANGE_KycWalletHandle *kwh = cls;
const json_t *j = response;
struct TALER_EXCHANGE_WalletKycResponse ks = {
.http_status = (unsigned int) response_code
};
kwh->job = NULL;
switch (response_code)
{
case 0:
ks.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
case MHD_HTTP_NO_CONTENT:
break;
case MHD_HTTP_BAD_REQUEST:
ks.ec = TALER_JSON_get_error_code (j);
/* This should never happen, either us or the exchange is buggy
(or API version conflict); just pass JSON reply to the application */
break;
case MHD_HTTP_FORBIDDEN:
ks.ec = TALER_JSON_get_error_code (j);
break;
case MHD_HTTP_NOT_FOUND:
ks.ec = TALER_JSON_get_error_code (j);
break;
case MHD_HTTP_UNAVAILABLE_FOR_LEGAL_REASONS:
{
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_fixed_auto (
"h_payto",
&ks.details.unavailable_for_legal_reasons.h_payto),
GNUNET_JSON_spec_uint64 (
"requirement_row",
&ks.details.unavailable_for_legal_reasons.requirement_row),
GNUNET_JSON_spec_end ()
};
if (GNUNET_OK !=
GNUNET_JSON_parse (j,
spec,
NULL, NULL))
{
GNUNET_break_op (0);
ks.http_status = 0;
ks.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
break;
}
break;
}
case MHD_HTTP_INTERNAL_SERVER_ERROR:
ks.ec = TALER_JSON_get_error_code (j);
/* Server had an internal issue; we should retry, but this API
leaves this to the application */
break;
default:
/* unexpected response code */
GNUNET_break_op (0);
ks.ec = TALER_JSON_get_error_code (j);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u/%d for exchange /kyc-wallet\n",
(unsigned int) response_code,
(int) ks.ec);
break;
}
kwh->cb (kwh->cb_cls,
&ks);
TALER_EXCHANGE_kyc_wallet_cancel (kwh);
}
struct TALER_EXCHANGE_KycWalletHandle *
TALER_EXCHANGE_kyc_wallet (
struct GNUNET_CURL_Context *ctx,
const char *url,
const struct TALER_ReservePrivateKeyP *reserve_priv,
const struct TALER_Amount *balance,
TALER_EXCHANGE_KycWalletCallback cb,
void *cb_cls)
{
struct TALER_EXCHANGE_KycWalletHandle *kwh;
CURL *eh;
json_t *req;
struct TALER_ReservePublicKeyP reserve_pub;
struct TALER_ReserveSignatureP reserve_sig;
GNUNET_CRYPTO_eddsa_key_get_public (&reserve_priv->eddsa_priv,
&reserve_pub.eddsa_pub);
TALER_wallet_account_setup_sign (reserve_priv,
balance,
&reserve_sig);
req = GNUNET_JSON_PACK (
TALER_JSON_pack_amount ("balance",
balance),
GNUNET_JSON_pack_data_auto ("reserve_pub",
&reserve_pub),
GNUNET_JSON_pack_data_auto ("reserve_sig",
&reserve_sig));
GNUNET_assert (NULL != req);
kwh = GNUNET_new (struct TALER_EXCHANGE_KycWalletHandle);
kwh->cb = cb;
kwh->cb_cls = cb_cls;
kwh->url = TALER_url_join (url,
"kyc-wallet",
NULL);
if (NULL == kwh->url)
{
json_decref (req);
GNUNET_free (kwh);
return NULL;
}
eh = TALER_EXCHANGE_curl_easy_get_ (kwh->url);
if ( (NULL == eh) ||
(GNUNET_OK !=
TALER_curl_easy_post (&kwh->ctx,
eh,
req)) )
{
GNUNET_break (0);
if (NULL != eh)
curl_easy_cleanup (eh);
json_decref (req);
GNUNET_free (kwh->url);
GNUNET_free (kwh);
return NULL;
}
json_decref (req);
kwh->job = GNUNET_CURL_job_add2 (ctx,
eh,
kwh->ctx.headers,
&handle_kyc_wallet_finished,
kwh);
return kwh;
}
void
TALER_EXCHANGE_kyc_wallet_cancel (struct TALER_EXCHANGE_KycWalletHandle *kwh)
{
if (NULL != kwh->job)
{
GNUNET_CURL_job_cancel (kwh->job);
kwh->job = NULL;
}
GNUNET_free (kwh->url);
TALER_curl_easy_post_finished (&kwh->ctx);
GNUNET_free (kwh);
}
/* end of exchange_api_kyc_wallet.c */
|
