aboutsummaryrefslogtreecommitdiff
path: root/src/auditor/taler-auditor-exchange.c
blob: 04c13fd0d58ea7841d9e09b4c423234efedb3e54 (plain)
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
/*
  This file is part of TALER
  Copyright (C) 2014, 2015, 2018, 2019 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 taler-auditor-exchange.c
 * @brief Tool used by the auditor to add or remove the exchange's master key
 *        to its database.
 * @author Christian Grothoff
 */
#include <platform.h>
#include "taler_exchangedb_lib.h"
#include "taler_auditordb_lib.h"


/**
 * URL of the exchange.
 */
static char *exchange_url;

/**
 * Master public key of the exchange.
 */
static struct TALER_MasterPublicKeyP master_public_key;

/**
 * Our configuration.
 */
static struct GNUNET_CONFIGURATION_Handle *cfg;

/**
 * Handle to access the auditor's database.
 */
static struct TALER_AUDITORDB_Plugin *adb;

/**
 * -r option given.
 */
static int remove_flag;


/**
 * The main function of the taler-auditor-exchange tool.  This tool is used
 * to add (or remove) an exchange's master key and base URL to the auditor's
 * database.
 *
 * @param argc number of arguments from the command line
 * @param argv command line arguments
 * @return 0 ok, non-zero on error
 */
int
main (int argc,
      char *const *argv)
{
  char *cfgfile = NULL;
  const struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_option_cfgfile (&cfgfile),
    GNUNET_GETOPT_option_help ("Add or remove exchange to list of audited exchanges"),
    GNUNET_GETOPT_option_mandatory
    (GNUNET_GETOPT_option_base32_auto ('m',
                                       "exchange-key",
                                       "KEY",
                                       "public key of the exchange (Crockford base32 encoded)",
                                       &master_public_key)),
    GNUNET_GETOPT_option_string ('u',
                                 "exchange-url",
                                 "URL",
                                 "base URL of the exchange",
                                 &exchange_url),
    GNUNET_GETOPT_option_flag ('r',
                               "remove",
                               "remove the exchange's key (default is to add)",
                               &remove_flag),
    GNUNET_GETOPT_option_version (VERSION "-" VCS_VERSION),
    GNUNET_GETOPT_OPTION_END
  };

  TALER_gcrypt_init (); /* must trigger initialization manually at this point! */
  GNUNET_assert (GNUNET_OK ==
                 GNUNET_log_setup ("taler-auditor-exchange",
                                   "WARNING",
                                   NULL));
  if (GNUNET_GETOPT_run ("taler-auditor-exchange",
                         options,
                         argc, argv) <= 0)
    return 1;
  if (NULL == cfgfile)
    cfgfile = GNUNET_strdup (GNUNET_OS_project_data_get ()->user_config_file);
  cfg = GNUNET_CONFIGURATION_create ();

  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
              "Loading config file: %s\n",
              cfgfile);

  if (GNUNET_SYSERR ==
      GNUNET_CONFIGURATION_load (cfg,
                                 cfgfile))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                _("Malformed configuration file `%s', exit ...\n"),
                cfgfile);
    GNUNET_free_non_null (cfgfile);
    return 1;
  }
  GNUNET_free_non_null (cfgfile);

  if (! remove_flag)
  {
    if (NULL == exchange_url)
    {
      FPRINTF (stderr,
	       _("Missing either `%s' or `%s'.\n"),
	       "-u URL",
	       "--remove");
      return 1;
    }
    if ( (0 == strlen (exchange_url)) ||
	 ( (0 != strncasecmp ("http://",
			      exchange_url,
			      strlen ("http://"))) &&
	   (0 != strncasecmp ("https://",
			      exchange_url,
			      strlen ("https://"))) )  ||
	 ('/' != exchange_url[strlen(exchange_url)-1]) )
    {
      fprintf (stderr,
	       "Exchange URL must begin with `http://` or `https://` and end with `/'\n");
      return 1;
    }
  }


  if (NULL ==
      (adb = TALER_AUDITORDB_plugin_load (cfg)))
  {
    fprintf (stderr,
             "Failed to initialize auditor database plugin.\n");
    return 3;
  }

  /* Create required tables */
  if (GNUNET_OK !=
      adb->create_tables (adb->cls))
  {
    fprintf (stderr,
             "Failed to create tables in auditor's database\n");
    TALER_AUDITORDB_plugin_unload (adb);
    return 3;
  }

  /* Update DB */
  {
    enum GNUNET_DB_QueryStatus qs;
    struct TALER_AUDITORDB_Session *session;

    session = adb->get_session (adb->cls);
    if (NULL == session)
    {
      fprintf (stderr,
               "Failed to initialize database session\n");
      TALER_AUDITORDB_plugin_unload (adb);
      return 3;
    }

    if (remove_flag)
    {
      qs = adb->delete_exchange (adb->cls,
                                 session,
                                 &master_public_key);
    }
    else
    {
      qs = adb->insert_exchange (adb->cls,
                                 session,
                                 &master_public_key,
                                 exchange_url);
    }
    if (0 > qs)
    {
      fprintf (stderr,
               "Failed to update auditor DB (%d)\n",
               qs);
      TALER_AUDITORDB_plugin_unload (adb);
      return 3;
    }
    if (0 == qs)
    {
      fprintf (stderr,
               "Did not update auditor DB: value existed\n");
      TALER_AUDITORDB_plugin_unload (adb);
      return 4;
    }
  }
  TALER_AUDITORDB_plugin_unload (adb);
  return 0;
}

/* end of taler-auditor-exchange.c */