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#
# httpauth/htgroup.rb -- Apache compatible htgroup file
#
# Author: IPR -- Internet Programming with Ruby -- writers
# Copyright (c) 2003 Internet Programming with Ruby writers. All rights
# reserved.
#
# $IPR: htgroup.rb,v 1.1 2003/02/16 22:22:56 gotoyuzo Exp $
require 'tempfile'
module WEBrick
module HTTPAuth
##
# Htgroup accesses apache-compatible group files. Htgroup can be used to
# provide group-based authentication for users. Currently Htgroup is not
# directly integrated with any authenticators in WEBrick. For security,
# the path for a digest password database should be stored outside of the
# paths available to the HTTP server.
#
# Example:
#
# htgroup = WEBrick::HTTPAuth::Htgroup.new 'my_group_file'
# htgroup.add 'superheroes', %w[spiderman batman]
#
# htgroup.members('superheroes').include? 'magneto' # => false
class Htgroup
##
# Open a group database at +path+
def initialize(path)
@path = path
@mtime = Time.at(0)
@group = Hash.new
open(@path,"a").close unless File::exist?(@path)
reload
end
##
# Reload groups from the database
def reload
if (mtime = File::mtime(@path)) > @mtime
@group.clear
open(@path){|io|
while line = io.gets
line.chomp!
group, members = line.split(/:\s*/)
@group[group] = members.split(/\s+/)
end
}
@mtime = mtime
end
end
##
# Flush the group database. If +output+ is given the database will be
# written there instead of to the original path.
def flush(output=nil)
output ||= @path
tmp = Tempfile.new("htgroup", File::dirname(output))
begin
@group.keys.sort.each{|group|
tmp.puts(format("%s: %s", group, self.members(group).join(" ")))
}
tmp.close
File::rename(tmp.path, output)
rescue
tmp.close(true)
end
end
##
# Retrieve the list of members from +group+
def members(group)
reload
@group[group] || []
end
##
# Add an Array of +members+ to +group+
def add(group, members)
@group[group] = members(group) | members
end
end
end
end