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
|
/*************************************************
* Configuration Handling Source File *
* (C) 1999-2007 The Botan Project *
*************************************************/
#include <botan/config.h>
#include <botan/libstate.h>
#include <botan/lookup.h>
#include <botan/charset.h>
#include <botan/parsing.h>
#include <botan/stl_util.h>
#include <botan/mutex.h>
#include <string>
namespace Botan {
/*************************************************
* Get the global configuration object *
*************************************************/
Config& global_config()
{
return global_state().config();
}
/*************************************************
* Get a configuration value *
*************************************************/
std::string Config::get(const std::string& section,
const std::string& key) const
{
Named_Mutex_Holder lock("config");
return search_map<std::string, std::string>(settings,
section + "/" + key, "");
}
/*************************************************
* See if a particular option has been set *
*************************************************/
bool Config::is_set(const std::string& section,
const std::string& key) const
{
Named_Mutex_Holder lock("config");
return search_map(settings, section + "/" + key, false, true);
}
/*************************************************
* Set a configuration value *
*************************************************/
void Config::set(const std::string& section, const std::string& key,
const std::string& value, bool overwrite)
{
Named_Mutex_Holder lock("config");
std::string full_key = section + "/" + key;
std::map<std::string, std::string>::const_iterator i =
settings.find(full_key);
if(overwrite || i == settings.end() || i->second == "")
settings[full_key] = value;
}
/*************************************************
* Add an alias *
*************************************************/
void Config::add_alias(const std::string& key, const std::string& value)
{
set("alias", key, value);
}
/*************************************************
* Dereference an alias to a fixed name *
*************************************************/
std::string Config::deref_alias(const std::string& key) const
{
std::string result = key;
while(is_set("alias", result))
result = get("alias", result);
return result;
}
/*************************************************
* Set/Add an option *
*************************************************/
void Config::set_option(const std::string key, const std::string& value)
{
set("conf", key, value);
}
/*************************************************
* Get an option value *
*************************************************/
std::string Config::option(const std::string& key) const
{
return get("conf", key);
}
/*************************************************
* Get the config setting as a list of strings *
*************************************************/
std::vector<std::string> Config::option_as_list(const std::string& key) const
{
return split_on(option(key), ':');
}
/*************************************************
* Get the config setting as a u32bit *
*************************************************/
u32bit Config::option_as_u32bit(const std::string& key) const
{
return parse_expr(option(key));
}
/*************************************************
* Get the config setting as a time *
*************************************************/
u32bit Config::option_as_time(const std::string& key) const
{
const std::string timespec = option(key);
if(timespec == "")
return 0;
const char suffix = timespec[timespec.size()-1];
std::string value = timespec.substr(0, timespec.size()-1);
u32bit scale = 1;
if(Charset::is_digit(suffix))
value += suffix;
else if(suffix == 's')
scale = 1;
else if(suffix == 'm')
scale = 60;
else if(suffix == 'h')
scale = 60 * 60;
else if(suffix == 'd')
scale = 24 * 60 * 60;
else if(suffix == 'y')
scale = 365 * 24 * 60 * 60;
else
throw Decoding_Error(
"Config::option_as_time: Unknown time value " + value
);
return scale * to_u32bit(value);
}
/*************************************************
* Get the config setting as a boolean *
*************************************************/
bool Config::option_as_bool(const std::string& key) const
{
const std::string value = option(key);
if(value == "0" || value == "false")
return false;
if(value == "1" || value == "true")
return true;
throw Decoding_Error(
"Config::option_as_bool: Unknown boolean value " + value
);
}
/*************************************************
* Choose the signature format for a PK algorithm *
*************************************************/
void Config::choose_sig_format(const std::string& algo_name,
std::string& padding,
Signature_Format& format)
{
if(algo_name == "RSA")
{
std::string hash = global_state().config().option("x509/ca/rsa_hash");
if(hash == "")
throw Invalid_State("No value set for x509/ca/rsa_hash");
hash = global_state().config().deref_alias(hash);
padding = "EMSA3(" + hash + ")";
format = IEEE_1363;
}
else if(algo_name == "DSA")
{
std::string hash = global_state().config().deref_alias("SHA-1");
padding = "EMSA1(" + hash + ")";
format = DER_SEQUENCE;
}
else
throw Invalid_Argument("Unknown X.509 signing key type: " + algo_name);
}
/*************************************************
* Dereference an alias *
*************************************************/
std::string deref_alias(const std::string& name)
{
return global_config().deref_alias(name);
}
}
|
