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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
|
=begin
= Ruby-space definitions that completes C-space funcs for Config
= Info
Copyright (C) 2010 Hiroshi Nakamura <nahi@ruby-lang.org>
= Licence
This program is licenced under the same licence as Ruby.
(See the file 'LICENCE'.)
=end
require 'stringio'
module OpenSSL
class Config
include Enumerable
class << self
def parse(str)
c = new()
parse_config(StringIO.new(str)).each do |section, hash|
c[section] = hash
end
c
end
alias load new
def parse_config(io)
begin
parse_config_lines(io)
rescue ConfigError => e
e.message.replace("error in line #{io.lineno}: " + e.message)
raise
end
end
def get_key_string(data, section, key) # :nodoc:
if v = data[section] && data[section][key]
return v
elsif section == 'ENV'
if v = ENV[key]
return v
end
end
if v = data['default'] && data['default'][key]
return v
end
end
private
def parse_config_lines(io)
section = 'default'
data = {section => {}}
while definition = get_definition(io)
definition = clear_comments(definition)
next if definition.empty?
if definition[0] == ?[
if /\[([^\]]*)\]/ =~ definition
section = $1.strip
data[section] ||= {}
else
raise ConfigError, "missing close square bracket"
end
else
if /\A([^:\s]*)(?:::([^:\s]*))?\s*=(.*)\z/ =~ definition
if $2
section = $1
key = $2
else
key = $1
end
value = unescape_value(data, section, $3)
(data[section] ||= {})[key] = value.strip
else
raise ConfigError, "missing equal sign"
end
end
end
data
end
# escape with backslash
QUOTE_REGEXP_SQ = /\A([^'\\]*(?:\\.[^'\\]*)*)'/
# escape with backslash and doubled dq
QUOTE_REGEXP_DQ = /\A([^"\\]*(?:""[^"\\]*|\\.[^"\\]*)*)"/
# escaped char map
ESCAPE_MAP = {
"r" => "\r",
"n" => "\n",
"b" => "\b",
"t" => "\t",
}
def unescape_value(data, section, value)
scanned = []
while m = value.match(/['"\\$]/)
scanned << m.pre_match
c = m[0]
value = m.post_match
case c
when "'"
if m = value.match(QUOTE_REGEXP_SQ)
scanned << m[1].gsub(/\\(.)/, '\\1')
value = m.post_match
else
break
end
when '"'
if m = value.match(QUOTE_REGEXP_DQ)
scanned << m[1].gsub(/""/, '').gsub(/\\(.)/, '\\1')
value = m.post_match
else
break
end
when "\\"
c = value.slice!(0, 1)
scanned << (ESCAPE_MAP[c] || c)
when "$"
ref, value = extract_reference(value)
refsec = section
if ref.index('::')
refsec, ref = ref.split('::', 2)
end
if v = get_key_string(data, refsec, ref)
scanned << v
else
raise ConfigError, "variable has no value"
end
else
raise 'must not reaced'
end
end
scanned << value
scanned.join
end
def extract_reference(value)
rest = ''
if m = value.match(/\(([^)]*)\)|\{([^}]*)\}/)
value = m[1] || m[2]
rest = m.post_match
elsif [?(, ?{].include?(value[0])
raise ConfigError, "no close brace"
end
if m = value.match(/[a-zA-Z0-9_]*(?:::[a-zA-Z0-9_]*)?/)
return m[0], m.post_match + rest
else
raise
end
end
def clear_comments(line)
# FCOMMENT
if m = line.match(/\A([\t\n\f ]*);.*\z/)
return m[1]
end
# COMMENT
scanned = []
while m = line.match(/[#'"\\]/)
scanned << m.pre_match
c = m[0]
line = m.post_match
case c
when '#'
line = nil
break
when "'", '"'
regexp = (c == "'") ? QUOTE_REGEXP_SQ : QUOTE_REGEXP_DQ
scanned << c
if m = line.match(regexp)
scanned << m[0]
line = m.post_match
else
scanned << line
line = nil
break
end
when "\\"
scanned << c
scanned << line.slice!(0, 1)
else
raise 'must not reaced'
end
end
scanned << line
scanned.join
end
def get_definition(io)
if line = get_line(io)
while /[^\\]\\\z/ =~ line
if extra = get_line(io)
line += extra
else
break
end
end
return line.strip
end
end
def get_line(io)
if line = io.gets
line.gsub(/[\r\n]*/, '')
end
end
end
def initialize(filename = nil)
@data = {}
if filename
File.open(filename.to_s) do |file|
Config.parse_config(file).each do |section, hash|
self[section] = hash
end
end
end
end
def get_value(section, key)
if section.nil?
raise TypeError.new('nil not allowed')
end
section = 'default' if section.empty?
get_key_string(section, key)
end
def value(arg1, arg2 = nil)
warn('Config#value is deprecated; use Config#get_value')
if arg2.nil?
section, key = 'default', arg1
else
section, key = arg1, arg2
end
section ||= 'default'
section = 'default' if section.empty?
get_key_string(section, key)
end
def add_value(section, key, value)
check_modify
(@data[section] ||= {})[key] = value
end
def [](section)
@data[section] || {}
end
def section(name)
warn('Config#section is deprecated; use Config#[]')
@data[name] || {}
end
def []=(section, pairs)
check_modify
@data[section] ||= {}
pairs.each do |key, value|
self.add_value(section, key, value)
end
end
def sections
@data.keys
end
def to_s
ary = []
@data.keys.sort.each do |section|
ary << "[ #{section} ]\n"
@data[section].keys.each do |key|
ary << "#{key}=#{@data[section][key]}\n"
end
ary << "\n"
end
ary.join
end
def each
@data.each do |section, hash|
hash.each do |key, value|
yield [section, key, value]
end
end
end
def inspect
"#<#{self.class.name} sections=#{sections.inspect}>"
end
protected
def data
@data
end
private
def initialize_copy(other)
@data = other.data.dup
end
def check_modify
raise TypeError.new("Insecure: can't modify OpenSSL config") if frozen?
end
def get_key_string(section, key)
Config.get_key_string(@data, section, key)
end
end
end
|