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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
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, If not, see
<http://www.gnu.org/licenses/>
*/
/**
* @file mint-lib/mint_api_admin.c
* @brief Implementation of the /admin/ requests of the mint'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_mint_service.h"
#include "mint_api_json.h"
#include "mint_api_context.h"
#include "mint_api_handle.h"
#include "taler_signatures.h"
/**
* @brief An admin/add/incoming Handle
*/
struct TALER_MINT_AdminAddIncomingHandle
{
/**
* The connection to mint this request handle will use
*/
struct TALER_MINT_Handle *mint;
/**
* The url for this request.
*/
char *url;
/**
* JSON encoding of the request to POST.
*/
char *json_enc;
/**
* Handle for the request.
*/
struct MAC_Job *job;
/**
* HTTP headers for the request.
*/
struct curl_slist *headers;
/**
* Function to call with the result.
*/
TALER_MINT_AdminAddIncomingResultCallback cb;
/**
* Closure for @a cb.
*/
void *cb_cls;
/**
* Download buffer
*/
struct MAC_DownloadBuffer db;
};
/**
* Function called when we're done processing the
* HTTP /admin/add/incoming request.
*
* @param cls the `struct TALER_MINT_AdminAddIncomingHandle`
* @param eh the curl request handle
*/
static void
handle_admin_add_incoming_finished (void *cls,
CURL *eh)
{
struct TALER_MINT_AdminAddIncomingHandle *aai = cls;
long response_code;
json_t *json;
aai->job = NULL;
json = MAC_download_get_result (&aai->db,
eh,
&response_code);
switch (response_code)
{
case 0:
break;
case MHD_HTTP_OK:
break;
case MHD_HTTP_BAD_REQUEST:
/* This should never happen, either us or the mint is buggy
(or API version conflict); just pass JSON reply to the application */
break;
case MHD_HTTP_FORBIDDEN:
/* Access denied */
break;
case MHD_HTTP_UNAUTHORIZED:
/* Nothing really to verify, mint says one of the signatures is
invalid; as we checked them, this should never happen, we
should pass the JSON reply to the application */
break;
case MHD_HTTP_NOT_FOUND:
/* Nothing really to verify, this should never
happen, we should pass the JSON reply to the application */
break;
case MHD_HTTP_INTERNAL_SERVER_ERROR:
/* Server had an internal issue; we should retry, but this API
leaves this to the application */
break;
default:
/* unexpected response code */
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u\n",
response_code);
GNUNET_break (0);
response_code = 0;
break;
}
aai->cb (aai->cb_cls,
response_code,
json);
json_decref (json);
TALER_MINT_admin_add_incoming_cancel (aai);
}
/**
* Notify the mint that we have received an incoming transaction
* which fills a reserve. Note that this API is an administrative
* API and thus not accessible to typical mint clients, but only
* to the operators of the mint.
*
* @param mint the mint handle; the mint must be ready to operate
* @param reserve_pub public key of the reserve
* @param amount amount that was deposited
* @param execution_date when did we receive the amount
* @param wire wire details
* @param res_cb the callback to call when the final result for this request is available
* @param res_cb_cls closure for the above callback
* @return NULL
* if the inputs are invalid (i.e. invalid amount).
* In this case, the callback is not called.
*/
struct TALER_MINT_AdminAddIncomingHandle *
TALER_MINT_admin_add_incoming (struct TALER_MINT_Handle *mint,
const struct TALER_ReservePublicKeyP *reserve_pub,
const struct TALER_Amount *amount,
struct GNUNET_TIME_Absolute execution_date,
const json_t *wire,
TALER_MINT_AdminAddIncomingResultCallback res_cb,
void *res_cb_cls)
{
struct TALER_MINT_AdminAddIncomingHandle *aai;
struct TALER_MINT_Context *ctx;
json_t *admin_obj;
CURL *eh;
GNUNET_assert (GNUNET_OK ==
TALER_round_abs_time (&execution_date));
if (GNUNET_YES !=
MAH_handle_is_ready (mint))
{
GNUNET_break (0);
return NULL;
}
admin_obj = json_pack ("{s:o, s:o," /* reserve_pub/amount */
" s:o, s:O}", /* execution_Date/wire */
"reserve_pub", TALER_json_from_data (reserve_pub,
sizeof (*reserve_pub)),
"amount", TALER_json_from_amount (amount),
"execution_date", TALER_json_from_abs (execution_date),
"wire", wire);
aai = GNUNET_new (struct TALER_MINT_AdminAddIncomingHandle);
aai->mint = mint;
aai->cb = res_cb;
aai->cb_cls = res_cb_cls;
aai->url = MAH_path_to_url (mint, "/admin/add/incoming");
eh = curl_easy_init ();
GNUNET_assert (NULL != (aai->json_enc =
json_dumps (admin_obj,
JSON_COMPACT)));
json_decref (admin_obj);
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_URL,
aai->url));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_POSTFIELDS,
aai->json_enc));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_POSTFIELDSIZE,
strlen (aai->json_enc)));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_WRITEFUNCTION,
&MAC_download_cb));
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_WRITEDATA,
&aai->db));
ctx = MAH_handle_to_context (mint);
aai->job = MAC_job_add (ctx,
eh,
GNUNET_YES,
&handle_admin_add_incoming_finished,
aai);
return aai;
}
/**
* Cancel an add incoming. This function cannot be used on a request
* handle if a response is already served for it.
*
* @param aai the admin add incoming request handle
*/
void
TALER_MINT_admin_add_incoming_cancel (struct TALER_MINT_AdminAddIncomingHandle *aai)
{
if (NULL != aai->job)
{
MAC_job_cancel (aai->job);
aai->job = NULL;
}
curl_slist_free_all (aai->headers);
GNUNET_free_non_null (aai->db.buf);
GNUNET_free (aai->url);
GNUNET_free (aai->json_enc);
GNUNET_free (aai);
}
/* end of mint_api_admin.c */
|
