class OpenSSL::Config
OpenSSL::Config
Configuration for the openssl library.
Many system's installation of openssl library will depend on your system configuration. See the value of OpenSSL::Config::DEFAULT_CONFIG_FILE for the location of the file for your host.
Constants
- DEFAULT_CONFIG_FILE
-
The default system configuration file for openssl
- ESCAPE_MAP
-
escaped char map
- QUOTE_REGEXP_DQ
-
escape with backslash and doubled dq
- QUOTE_REGEXP_SQ
-
escape with backslash
Public Class Methods
# File ext/openssl/lib/openssl/config.rb, line 246
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 Creates an instance of OpenSSL's configuration class.
This can be used in contexts like OpenSSL::X509::ExtensionFactory.config=
If the optional filename parameter is provided, then it is read in and parsed via parse_config.
This can raise IO exceptions based on the access, or availability of the file. A ConfigError exception may be raised depending on the validity of the data being configured.
# File ext/openssl/lib/openssl/config.rb, line 36
def parse(string)
c = new()
parse_config(StringIO.new(string)).each do |section, hash|
c[section] = hash
end
c
end Parses a given string as a blob that contains configuration for openssl.
If the source of the IO is a file, then consider using parse_config.
# File ext/openssl/lib/openssl/config.rb, line 52
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 Parses the configuration data read from io, see also parse.
Raises a ConfigError on invalid configuration data.
Private Class Methods
# File ext/openssl/lib/openssl/config.rb, line 177
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 # File ext/openssl/lib/openssl/config.rb, line 162
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 # File ext/openssl/lib/openssl/config.rb, line 214
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 # File ext/openssl/lib/openssl/config.rb, line 227
def get_line(io)
if line = io.gets
line.gsub(/[\r\n]*/, '')
end
end # File ext/openssl/lib/openssl/config.rb, line 76
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 # File ext/openssl/lib/openssl/config.rb, line 119
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 Public Instance Methods
# File ext/openssl/lib/openssl/config.rb, line 340
def [](section)
@data[section] || {}
end Get a specific section from the current configuration
Given the following configurating file being loaded:
config = OpenSSL::Config.load('foo.cnf')
#=> #<OpenSSL::Config sections=["default"]>
puts config.to_s
#=> [ default ]
# foo=bar
You can get a hash of the specific section like so:
config['default']
#=> {"foo"=>"bar"}
# File ext/openssl/lib/openssl/config.rb, line 377
def []=(section, pairs)
check_modify
@data[section] ||= {}
pairs.each do |key, value|
self.add_value(section, key, value)
end
end Sets a specific section name with a Hash pairs
Given the following configuration being created:
config = OpenSSL::Config.new
#=> #<OpenSSL::Config sections=[]>
config['default'] = {"foo"=>"bar","baz"=>"buz"}
#=> {"foo"=>"bar", "baz"=>"buz"}
puts config.to_s
#=> [ default ]
# foo=bar
# baz=buz
It's important to note that this will essentially merge any of the keys in pairs with the existing section. For example:
config['default']
#=> {"foo"=>"bar", "baz"=>"buz"}
config['default'] = {"foo" => "changed"}
#=> {"foo"=>"changed"}
config['default']
#=> {"foo"=>"changed", "baz"=>"buz"}
# File ext/openssl/lib/openssl/config.rb, line 319
def add_value(section, key, value)
check_modify
(@data[section] ||= {})[key] = value
end Set the target key with a given value under a specific section.
Given the following configurating file being loaded:
config = OpenSSL::Config.load('foo.cnf')
#=> #<OpenSSL::Config sections=["default"]>
puts config.to_s
#=> [ default ]
# foo=bar
You can set the value of foo under the default section to a new value:
config.add_value('default', 'foo', 'buzz')
#=> "buzz"
puts config.to_s
#=> [ default ]
# foo=buzz
# File ext/openssl/lib/openssl/config.rb, line 438
def each
@data.each do |section, hash|
hash.each do |key, value|
yield [section, key, value]
end
end
end For a block.
Receive the section and its pairs for the current configuration.
config.each do |section, key, value| # ... end
# File ext/openssl/lib/openssl/config.rb, line 274
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 Gets the value of key from the given section
Given the following configurating file being loaded:
config = OpenSSL::Config.load('foo.cnf')
#=> #<OpenSSL::Config sections=["default"]>
puts config.to_s
#=> [ default ]
# foo=bar
You can get a specific value from the config if you know the section and key like so:
config.get_value('default','foo')
#=> "bar"
# File ext/openssl/lib/openssl/config.rb, line 449
def inspect
"#<#{self.class.name} sections=#{sections.inspect}>"
end String representation of this configuration object, including the class name and its sections.
# File ext/openssl/lib/openssl/config.rb, line 387 def sections @data.keys end
Get the names of all sections in the current configuration
# File ext/openssl/lib/openssl/config.rb, line 417
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 Get the parsable form of the current configuration
Given the following configuration being created:
config = OpenSSL::Config.new
#=> #<OpenSSL::Config sections=[]>
config['default'] = {"foo"=>"bar","baz"=>"buz"}
#=> {"foo"=>"bar", "baz"=>"buz"}
puts config.to_s
#=> [ default ]
# foo=bar
# baz=buz
You can parse get the serialized configuration using to_s and then parse it later:
serialized_config = config.to_s
# much later...
new_config = OpenSSL::Config.parse(serialized_config)
#=> #<OpenSSL::Config sections=["default"]>
puts new_config
#=> [ default ]
foo=bar
baz=buz
Private Instance Methods
# File ext/openssl/lib/openssl/config.rb, line 465
def check_modify
raise TypeError.new("Insecure: can't modify OpenSSL config") if frozen?
end # File ext/openssl/lib/openssl/config.rb, line 469 def get_key_string(section, key) Config.get_key_string(@data, section, key) end
# File ext/openssl/lib/openssl/config.rb, line 461 def initialize_copy(other) @data = other.data.dup end
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