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Edit File: basicauth.rb
# # httpauth/basicauth.rb -- HTTP basic access authentication # # Author: IPR -- Internet Programming with Ruby -- writers # Copyright (c) 2003 Internet Programming with Ruby writers. All rights # reserved. # # $IPR: basicauth.rb,v 1.5 2003/02/20 07:15:47 gotoyuzo Exp $ require 'webrick/config' require 'webrick/httpstatus' require 'webrick/httpauth/authenticator' module WEBrick module HTTPAuth ## # Basic Authentication for WEBrick # # Use this class to add basic authentication to a WEBrick servlet. # # Here is an example of how to set up a BasicAuth: # # config = { :Realm => 'BasicAuth example realm' } # # htpasswd = WEBrick::HTTPAuth::Htpasswd.new 'my_password_file' # htpasswd.set_passwd config[:Realm], 'username', 'password' # htpasswd.flush # # config[:UserDB] = htpasswd # # basic_auth = WEBrick::HTTPAuth::BasicAuth.new config class BasicAuth include Authenticator AuthScheme = "Basic" ## # Used by UserDB to create a basic password entry def self.make_passwd(realm, user, pass) pass ||= "" pass.crypt(Utils::random_string(2)) end attr_reader :realm, :userdb, :logger ## # Creates a new BasicAuth instance. # # See WEBrick::Config::BasicAuth for default configuration entries # # You must supply the following configuration entries: # # :Realm:: The name of the realm being protected. # :UserDB:: A database of usernames and passwords. # A WEBrick::HTTPAuth::Htpasswd instance should be used. def initialize(config, default=Config::BasicAuth) check_init(config) @config = default.dup.update(config) end ## # Authenticates a +req+ and returns a 401 Unauthorized using +res+ if # the authentication was not correct. def authenticate(req, res) unless basic_credentials = check_scheme(req) challenge(req, res) end userid, password = basic_credentials.unpack("m*")[0].split(":", 2) password ||= "" if userid.empty? error("user id was not given.") challenge(req, res) end unless encpass = @userdb.get_passwd(@realm, userid, @reload_db) error("%s: the user is not allowed.", userid) challenge(req, res) end if password.crypt(encpass) != encpass error("%s: password unmatch.", userid) challenge(req, res) end info("%s: authentication succeeded.", userid) req.user = userid end ## # Returns a challenge response which asks for for authentication # information def challenge(req, res) res[@response_field] = "#{@auth_scheme} realm=\"#{@realm}\"" raise @auth_exception end end ## # Basic authentication for proxy servers. See BasicAuth for details. class ProxyBasicAuth < BasicAuth include ProxyAuthenticator end end end