diff options
Diffstat (limited to 'lib/net/ssh/config.rb')
| -rw-r--r-- | lib/net/ssh/config.rb | 59 |
1 files changed, 30 insertions, 29 deletions
diff --git a/lib/net/ssh/config.rb b/lib/net/ssh/config.rb index 7e9456a..5689c74 100644 --- a/lib/net/ssh/config.rb +++ b/lib/net/ssh/config.rb @@ -1,4 +1,4 @@ -module Net +module Net module SSH # The Net::SSH::Config class is used to parse OpenSSH configuration files, @@ -46,17 +46,17 @@ module Net # "hostbased" is off and "none" is not supported but we allow it since # it's used by some clients to query the server for allowed auth methods @@default_auth_methods = %w[none publickey password keyboard-interactive] - + # Returns an array of locations of OpenSSH configuration files # to parse by default. def default_files @@default_files.clone end - + def default_auth_methods @@default_auth_methods.clone end - + # Loads the configuration data for the given +host+ from all of the # given +files+ (defaulting to the list of files returned by # #default_files), translates the resulting hash into the options @@ -66,7 +66,7 @@ module Net load(file, host, settings) }) end - + # Load the OpenSSH configuration settings in the given +file+ for the # given +host+. If +settings+ is given, the options are merged into # that hash, with existing values taking precedence over newly parsed @@ -77,47 +77,47 @@ module Net file = File.expand_path(path) base_dir ||= File.dirname(file) return settings unless File.readable?(file) - + globals = {} block_matched = false block_seen = false IO.foreach(file) do |line| next if line =~ /^\s*(?:#.*)?$/ - + if line =~ /^\s*(\S+)\s*=(.*)$/ key, value = $1, $2 else key, value = line.strip.split(/\s+/, 2) end - + # silently ignore malformed entries next if value.nil? - + key.downcase! value = $1 if value =~ /^"(.*)"$/ - + value = case value.strip when /^\d+$/ then value.to_i when /^no$/i then false when /^yes$/i then true else value - end - + end + if key == 'host' # Support "Host host1 host2 hostN". # See http://github.com/net-ssh/net-ssh/issues#issue/6 negative_hosts, positive_hosts = value.to_s.split(/\s+/).partition { |h| h.start_with?('!') } - + # Check for negative patterns first. If the host matches, that overrules any other positive match. # The host substring code is used to strip out the starting "!" so the regexp will be correct. negative_matched = negative_hosts.any? { |h| host =~ pattern2regex(h[1..-1]) } - + if negative_matched block_matched = false else block_matched = positive_hosts.any? { |h| host =~ pattern2regex(h) } end - + block_seen = true settings[key] = host elsif key == 'match' @@ -147,7 +147,7 @@ module Net end end end - + globals.merge(settings) do |key, oldval, newval| case key when 'identityfile' @@ -157,7 +157,7 @@ module Net end end end - + # Given a hash of OpenSSH configuration options, converts them into # a hash of Net::SSH options. Unrecognized options are ignored. The # +settings+ hash must have Strings for keys, all downcased, and @@ -170,7 +170,7 @@ module Net end merge_challenge_response_with_keyboard_interactive(ret) end - + # Filters default_files down to the files that are expandable. def expandable_default_files default_files.keep_if do |path| @@ -182,9 +182,9 @@ module Net end end end - + private - + def translate_config_key(hash, key, value, settings) rename = { bindaddress: :bind_address, @@ -271,7 +271,7 @@ module Net hash[rename[key]] = value end end - + # Converts an ssh_config pattern into a regex for matching against # host names. def pattern2regex(pattern) @@ -292,7 +292,7 @@ module Net end Regexp.new("^" + prefix + "$", true) end - + # Converts the given size into an integer number of bytes. def interpret_size(size) case size @@ -302,7 +302,7 @@ module Net else size.to_i end end - + def merge_challenge_response_with_keyboard_interactive(hash) if hash[:auth_methods].include?('challenge-response') hash[:auth_methods].delete('challenge-response') @@ -310,19 +310,19 @@ module Net end hash end - + def included_file_paths(base_dir, config_paths) tokenize_config_value(config_paths).flat_map do |path| Dir.glob(File.expand_path(path, base_dir)).select { |f| File.file?(f) } end end - + # Tokenize string into tokens. # A token is a word or a quoted sequence of words, separated by whitespaces. def tokenize_config_value(str) str.scan(/([^"\s]+)?(?:"([^"]+)")?\s*/).map(&:join) end - + def eval_match_condition(condition, host, settings) if condition.start_with?('!') negated = true @@ -330,17 +330,18 @@ module Net else negated = false end - + condition_met = case condition when 'all' true end - + # return false for unsupported conditions condition_met.nil? ? false : (negated ^ condition_met) end end end -end; end + end +end |