Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2014-2020 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU General Public License as published by the Free Software
7 : Foundation; either version 3, or (at your option) any later version.
8 :
9 : TALER is distributed in the hope that it will be useful, but WITHOUT ANY
10 : WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11 : A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12 :
13 : You should have received a copy of the GNU General Public License along with
14 : TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
15 : */
16 : /**
17 : * @file config.c
18 : * @brief configuration parsing functions for Taler-specific data types
19 : * @author Florian Dold
20 : * @author Benedikt Mueller
21 : */
22 : #include "platform.h"
23 : #include "taler_util.h"
24 :
25 :
26 : enum GNUNET_GenericReturnValue
27 0 : TALER_config_get_amount (const struct GNUNET_CONFIGURATION_Handle *cfg,
28 : const char *section,
29 : const char *option,
30 : struct TALER_Amount *denom)
31 : {
32 : char *str;
33 :
34 0 : if (GNUNET_OK !=
35 0 : GNUNET_CONFIGURATION_get_value_string (cfg,
36 : section,
37 : option,
38 : &str))
39 : {
40 0 : GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
41 : section,
42 : option);
43 0 : return GNUNET_NO;
44 : }
45 0 : if (GNUNET_OK !=
46 0 : TALER_string_to_amount (str,
47 : denom))
48 : {
49 0 : GNUNET_free (str);
50 0 : GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
51 : section,
52 : option,
53 : "invalid amount");
54 0 : return GNUNET_SYSERR;
55 : }
56 0 : GNUNET_free (str);
57 0 : return GNUNET_OK;
58 : }
59 :
60 :
61 : enum GNUNET_GenericReturnValue
62 0 : TALER_config_get_denom_fees (const struct GNUNET_CONFIGURATION_Handle *cfg,
63 : const char *currency,
64 : const char *section,
65 : struct TALER_DenomFeeSet *fees)
66 : {
67 0 : if (GNUNET_OK !=
68 0 : TALER_config_get_amount (cfg,
69 : section,
70 : "FEE_WITHDRAW",
71 : &fees->withdraw))
72 : {
73 0 : GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
74 : "Need amount for option `%s' in section `%s'\n",
75 : "FEE_WITHDRAW",
76 : section);
77 0 : return GNUNET_SYSERR;
78 : }
79 0 : if (GNUNET_OK !=
80 0 : TALER_config_get_amount (cfg,
81 : section,
82 : "FEE_DEPOSIT",
83 : &fees->deposit))
84 : {
85 0 : GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
86 : "Need amount for option `%s' in section `%s'\n",
87 : "FEE_DEPOSIT",
88 : section);
89 0 : return GNUNET_SYSERR;
90 : }
91 0 : if (GNUNET_OK !=
92 0 : TALER_config_get_amount (cfg,
93 : section,
94 : "FEE_REFRESH",
95 : &fees->refresh))
96 : {
97 0 : GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
98 : "Need amount for option `%s' in section `%s'\n",
99 : "FEE_REFRESH",
100 : section);
101 0 : return GNUNET_SYSERR;
102 : }
103 0 : if (GNUNET_OK !=
104 0 : TALER_config_get_amount (cfg,
105 : section,
106 : "FEE_REFUND",
107 : &fees->refund))
108 : {
109 0 : GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
110 : "Need amount for option `%s' in section `%s'\n",
111 : "FEE_REFUND",
112 : section);
113 0 : return GNUNET_SYSERR;
114 : }
115 0 : if (GNUNET_OK !=
116 0 : TALER_denom_fee_check_currency (currency,
117 : fees))
118 : {
119 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
120 : "Need fee amounts in section `%s' to use currency `%s'\n",
121 : section,
122 : currency);
123 0 : return GNUNET_SYSERR;
124 : }
125 0 : return GNUNET_OK;
126 : }
127 :
128 :
129 : enum GNUNET_GenericReturnValue
130 26 : TALER_config_get_currency (const struct GNUNET_CONFIGURATION_Handle *cfg,
131 : char **currency)
132 : {
133 : size_t slen;
134 :
135 26 : if (GNUNET_OK !=
136 26 : GNUNET_CONFIGURATION_get_value_string (cfg,
137 : "taler",
138 : "CURRENCY",
139 : currency))
140 : {
141 0 : GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
142 : "taler",
143 : "CURRENCY");
144 0 : return GNUNET_SYSERR;
145 : }
146 26 : slen = strlen (*currency);
147 26 : if (slen >= TALER_CURRENCY_LEN)
148 : {
149 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
150 : "Currency `%s' longer than the allowed limit of %u characters.",
151 : *currency,
152 : (unsigned int) TALER_CURRENCY_LEN);
153 0 : GNUNET_free (*currency);
154 0 : *currency = NULL;
155 0 : return GNUNET_SYSERR;
156 : }
157 114 : for (size_t i = 0; i<slen; i++)
158 88 : if (! isalpha ((unsigned char) (*currency)[i]))
159 : {
160 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
161 : "Currency `%s' must only use characters from the A-Z range.",
162 : *currency);
163 0 : GNUNET_free (*currency);
164 0 : *currency = NULL;
165 0 : return GNUNET_SYSERR;
166 : }
167 26 : return GNUNET_OK;
168 : }
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