summaryrefslogtreecommitdiff
path: root/src/bank-lib/bank_api_parse.c
blob: 5423d01b7e20876b4dbd90afeac82dd7817c464f (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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
/*
  This file is part of TALER
  Copyright (C) 2018-2020 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 bank-lib/bank_api_parse.c
 * @brief Convenience function to parse authentication configuration
 * @author Christian Grothoff
 */
#include "platform.h"
#include "taler_bank_service.h"


/**
 * Convenience method for parsing configuration section with bank account data.
 *
 * @param cfg configuration to parse
 * @param section the section with the configuration data
 * @param acc[out] set to the account details
 * @return #GNUNET_OK on success
 */
int
TALER_BANK_account_parse_cfg (const struct GNUNET_CONFIGURATION_Handle *cfg,
                              const char *section,
                              struct TALER_Account *acc)
{
  char *account_url;

  if (GNUNET_OK !=
      GNUNET_CONFIGURATION_get_value_string (cfg,
                                             section,
                                             "URL",
                                             &account_url))
  {
    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
                               section,
                               "URL");
    return GNUNET_SYSERR;
  }
  if (TALER_EC_NONE !=
      TALER_BANK_payto_to_account (account_url,
                                   acc))
  {
    GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
                               section,
                               "URL",
                               "Malformed payto:// URL for x-taler-bank method");
    GNUNET_free (account_url);
    return GNUNET_SYSERR;
  }
  if (TALER_PAC_X_TALER_BANK != acc->type)
  {
    GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
                               section,
                               "URL",
                               "Malformed payto:// URL for x-taler-bank method");
    GNUNET_free (account_url);
    TALER_BANK_account_free (acc);
    return GNUNET_SYSERR;
  }
  GNUNET_free (account_url);
  return GNUNET_OK;
}


/**
 * Parse configuration section with bank authentication data.
 *
 * @param cfg configuration to parse
 * @param section the section with the configuration data
 * @param auth[out] set to the configuration data found
 * @return #GNUNET_OK on success
 */
int
TALER_BANK_auth_parse_cfg (const struct GNUNET_CONFIGURATION_Handle *cfg,
                           const char *section,
                           struct TALER_BANK_AuthenticationData *auth)
{
  const struct
  {
    const char *m;
    enum TALER_BANK_AuthenticationMethod e;
  } methods[] = {
    { "NONE",  TALER_BANK_AUTH_NONE  },
    { "BASIC", TALER_BANK_AUTH_BASIC },
    { NULL, TALER_BANK_AUTH_NONE     }
  };
  char *method;
  unsigned long long fakebank_port;

  if (GNUNET_OK ==
      GNUNET_CONFIGURATION_get_value_number (cfg,
                                             section,
                                             "FAKEBANK_PORT",
                                             &fakebank_port))
  {
    auth->method = TALER_BANK_AUTH_FAKEBANK;
    auth->details.fakebank.fb_port = (uint16_t) fakebank_port;
    // FIXME: we should not hardcode exchange account number "2"
    GNUNET_asprintf (&auth->wire_gateway_url,
                     "http://localhost:%u/2/",
                     (unsigned int) fakebank_port);

    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                "Using fakebank %s on port %u\n",
                auth->wire_gateway_url,
                (unsigned int) fakebank_port);
    return GNUNET_OK;
  }

  if (GNUNET_OK !=
      GNUNET_CONFIGURATION_get_value_string (cfg,
                                             section,
                                             "WIRE_GATEWAY_URL",
                                             &auth->wire_gateway_url))
  {
    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
                               section,
                               "WIRE_GATEWAY_URL");
    return GNUNET_SYSERR;
  }

  if (GNUNET_OK !=
      GNUNET_CONFIGURATION_get_value_string (cfg,
                                             section,
                                             "WIRE_GATEWAY_AUTH_METHOD",
                                             &method))
  {
    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
                               section,
                               "WIRE_GATEWAY_AUTH_METHOD");
    GNUNET_free (auth->wire_gateway_url);
    return GNUNET_SYSERR;
  }
  for (unsigned int i = 0; NULL != methods[i].m; i++)
  {
    if (0 == strcasecmp (method,
                         methods[i].m))
    {
      switch (methods[i].e)
      {
      case TALER_BANK_AUTH_NONE:
        auth->method = TALER_BANK_AUTH_NONE;
        GNUNET_free (method);
        return GNUNET_OK;
      case TALER_BANK_AUTH_BASIC:
        if (GNUNET_OK !=
            GNUNET_CONFIGURATION_get_value_string (cfg,
                                                   section,
                                                   "USERNAME",
                                                   &auth->details.basic.username))
        {
          GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
                                     section,
                                     "USERNAME");
          GNUNET_free (method);
          GNUNET_free (auth->wire_gateway_url);
          return GNUNET_SYSERR;
        }
        if (GNUNET_OK !=
            GNUNET_CONFIGURATION_get_value_string (cfg,
                                                   section,
                                                   "PASSWORD",
                                                   &auth->details.basic.password))
        {
          GNUNET_free (auth->details.basic.username);
          auth->details.basic.username = NULL;
          GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
                                     section,
                                     "PASSWORD");
          GNUNET_free (method);
          GNUNET_free (auth->wire_gateway_url);
          return GNUNET_SYSERR;
        }
        auth->method = TALER_BANK_AUTH_BASIC;
        GNUNET_free (method);
        return GNUNET_OK;
      case TALER_BANK_AUTH_FAKEBANK:
        GNUNET_assert (0);
      }
    }
  }
  GNUNET_free (method);
  return GNUNET_SYSERR;
}


/**
 * Free memory inside of @a auth (but not auth itself).
 * Dual to #TALER_BANK_auth_parse_cfg().
 *
 * @param auth authentication data to free
 */
void
TALER_BANK_auth_free (struct TALER_BANK_AuthenticationData *auth)
{
  switch (auth->method)
  {
  case TALER_BANK_AUTH_NONE:
    break;
  case TALER_BANK_AUTH_BASIC:
    if (NULL != auth->details.basic.username)
    {
      GNUNET_free (auth->details.basic.username);
      auth->details.basic.username = NULL;
    }
    if (NULL != auth->details.basic.password)
    {
      GNUNET_free (auth->details.basic.password);
      auth->details.basic.password = NULL;
    }
    break;
  case TALER_BANK_AUTH_FAKEBANK:
    break;
  }
  GNUNET_free (auth->wire_gateway_url);
}


/* end of bank_api_parse.c */