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
|
/*
This file is part of TALER
Copyright (C) 2015, 2016 Inria
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 taler-exchange-wire.c
* @brief Create signed response for /wire requests.
* @author Christian Grothoff
*/
#include <platform.h>
#include <jansson.h>
#include <gnunet/gnunet_json_lib.h>
#include "taler_crypto_lib.h"
#include "taler_wire_plugin.h"
#include "taler_signatures.h"
/**
* Filename of the master private key.
*/
static char *masterkeyfile;
/**
* Account holder information in JSON format.
*/
static char *json_in;
/**
* Which wire method is this for?
*/
static char *method;
/**
* Where to write the result.
*/
static char *output_filename;
/**
* The main function of the taler-exchange-sepa tool. This tool is used
* to sign the SEPA bank account details using the master key.
*
* @param argc number of arguments from the command line
* @param argv command line arguments
* @return 0 ok, 1 on error
*/
int
main (int argc,
char *const *argv)
{
static const struct GNUNET_GETOPT_CommandLineOption options[] = {
{'j', "json", "JSON",
"account information in JSON format", 1,
&GNUNET_GETOPT_set_string, &json_in},
{'m', "master-key", "FILE",
"master key file (private key)", 1,
&GNUNET_GETOPT_set_filename, &masterkeyfile},
{'t', "type", "METHOD",
"which wire transfer method (i.e. 'test' or 'sepa') is this for?", 1,
&GNUNET_GETOPT_set_string, &method},
{'o', "output", "FILE",
"where to write the result", 1,
&GNUNET_GETOPT_set_filename, &output_filename},
GNUNET_GETOPT_OPTION_HELP ("Setup /wire response"),
GNUNET_GETOPT_OPTION_VERSION (VERSION "-" VCS_VERSION),
GNUNET_GETOPT_OPTION_END
};
struct GNUNET_CRYPTO_EddsaPrivateKey *eddsa_priv;
struct TALER_MasterPrivateKeyP key;
struct TALER_MasterSignatureP sig;
json_t *j;
json_error_t err;
char *json_out;
struct GNUNET_HashCode salt;
char *lib_name;
struct TALER_WIRE_Plugin *plugin;
GNUNET_assert (GNUNET_OK ==
GNUNET_log_setup ("taler-exchange-wire",
"WARNING",
NULL));
if (GNUNET_GETOPT_run ("taler-exchange-wire",
options,
argc, argv) < 0)
return 1;
if (NULL == masterkeyfile)
{
fprintf (stderr,
"Master key file not given\n");
return 1;
}
eddsa_priv = GNUNET_CRYPTO_eddsa_key_create_from_file (masterkeyfile);
if (NULL == eddsa_priv)
{
fprintf (stderr,
"Failed to initialize master key from file `%s'\n",
masterkeyfile);
return 1;
}
if (NULL == json_in)
{
fprintf (stderr,
"Required -j argument missing\n");
return 1;
}
if (NULL == method)
{
fprintf (stderr,
"Required -t argument missing\n");
return 1;
}
j = json_loads (json_in,
JSON_REJECT_DUPLICATES,
&err);
if (NULL == j)
{
fprintf (stderr,
"Failed to parse JSON: %s (at offset %u)\n",
err.text,
(unsigned int) err.position);
return 1;
}
key.eddsa_priv = *eddsa_priv;
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_NONCE,
&salt,
sizeof (salt));
(void) GNUNET_asprintf (&lib_name,
"libtaler_plugin_wire_%s",
method);
plugin = GNUNET_PLUGIN_load (lib_name,
NULL);
if (NULL == plugin)
{
GNUNET_free (lib_name);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Wire transfer method `%s' not supported\n",
method);
return 1;
}
plugin->library_name = lib_name;
if (GNUNET_OK !=
plugin->sign_wire_details (plugin->cls,
j,
&key,
&salt,
&sig))
{
/* sign function should have logged applicable errors */
json_decref (j);
GNUNET_PLUGIN_unload (lib_name,
plugin);
GNUNET_free (lib_name);
return 1;
}
GNUNET_PLUGIN_unload (lib_name,
plugin);
GNUNET_free (lib_name);
GNUNET_free (eddsa_priv);
/* add signature and salt to JSON message */
json_object_set_new (j,
"salt",
GNUNET_JSON_from_data (&salt,
sizeof (salt)));
json_object_set_new (j,
"sig",
GNUNET_JSON_from_data (&sig,
sizeof (sig)));
/* dump result to stdout */
json_out = json_dumps (j, JSON_INDENT(2));
json_decref (j);
GNUNET_assert (NULL != json_out);
if (NULL != output_filename)
{
fclose (stdout);
stdout = fopen (output_filename,
"w+");
}
fprintf (stdout,
"%s",
json_out);
fflush (stdout);
free (json_out);
return 0;
}
/* end of taler-exchange-wire.c */
|
