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
|
/*************************************************
* Configuration Handling Source File *
* (C) 1999-2006 The Botan Project *
*************************************************/
#include <botan/conf.h>
#include <botan/libstate.h>
#include <botan/lookup.h>
#include <botan/charset.h>
#include <botan/parsing.h>
#include <string>
namespace Botan {
namespace Config {
/*************************************************
* Set an option *
*************************************************/
void set(const std::string& name, const std::string& value, bool overwrite)
{
global_state().set_option("conf", name, value, overwrite);
}
/*************************************************
* Get the value of an option as a string *
*************************************************/
std::string get_string(const std::string& name)
{
return global_state().get_option("conf", name);
}
/*************************************************
* Get the value as a list of strings *
*************************************************/
std::vector<std::string> get_list(const std::string& name)
{
return split_on(get_string(name), ':');
}
/*************************************************
* Get the value as a u32bit *
*************************************************/
u32bit get_u32bit(const std::string& name)
{
return parse_expr(get_string(name));
}
/*************************************************
* Get the value as a time *
*************************************************/
u32bit get_time(const std::string& name)
{
const std::string timespec = get_string(name);
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::get_time: Unknown time value " + value);
return scale * to_u32bit(value);
}
/*************************************************
* Get the value as a boolean *
*************************************************/
bool get_bool(const std::string& name)
{
const std::string value = get_string(name);
if(value == "0" || value == "false")
return false;
if(value == "1" || value == "true")
return true;
throw Decoding_Error("Config::get_bool: Unknown boolean value " + value);
}
/*************************************************
* Choose the signature format for a PK algorithm *
*************************************************/
void choose_sig_format(const std::string& algo_name, std::string& padding,
Signature_Format& format)
{
std::string dummy;
choose_sig_format(algo_name, padding, dummy, format);
}
/*************************************************
* Choose the signature format for a PK algorithm *
*************************************************/
void choose_sig_format(const std::string& algo_name, std::string& padding,
std::string& hash, Signature_Format& format)
{
if(algo_name == "RSA")
{
hash = deref_alias(get_string("x509/ca/rsa_hash"));
if(hash == "")
throw Invalid_State("No value set for x509/ca/rsa_hash");
padding = "EMSA3(" + hash + ")";
format = IEEE_1363;
}
else if(algo_name == "DSA")
{
hash = deref_alias("SHA-1");
padding = "EMSA1(" + hash + ")";
format = DER_SEQUENCE;
}
else
throw Invalid_Argument("Unknown X.509 signing key type: " + algo_name);
}
}
/*************************************************
* Add an alias for an algorithm *
*************************************************/
void add_alias(const std::string& alias, const std::string& official_name)
{
if(alias == "" || official_name == "")
return;
global_state().set_option("alias", alias, official_name);
}
/*************************************************
* Dereference an alias *
*************************************************/
std::string deref_alias(const std::string& name)
{
std::string result = name;
while(global_state().option_set("alias", result))
result = global_state().get_option("alias", result);
return result;
}
}
|
