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#--
# httpauth/authenticator.rb -- Authenticator mix-in module.
#
# Author: IPR -- Internet Programming with Ruby -- writers
# Copyright (c) 2003 Internet Programming with Ruby writers. All rights
# reserved.
#
# $IPR: authenticator.rb,v 1.3 2003/02/20 07:15:47 gotoyuzo Exp $
module WEBrick
module HTTPAuth
##
# Module providing generic support for both Digest and Basic
# authentication schemes.
module Authenticator
RequestField = "Authorization" # :nodoc:
ResponseField = "WWW-Authenticate" # :nodoc:
ResponseInfoField = "Authentication-Info" # :nodoc:
AuthException = HTTPStatus::Unauthorized # :nodoc:
##
# Method of authentication, must be overridden by the including class
AuthScheme = nil
##
# The realm this authenticator covers
attr_reader :realm
##
# The user database for this authenticator
attr_reader :userdb
##
# The logger for this authenticator
attr_reader :logger
private
# :stopdoc:
##
# Initializes the authenticator from +config+
def check_init(config)
[:UserDB, :Realm].each{|sym|
unless config[sym]
raise ArgumentError, "Argument #{sym.inspect} missing."
end
}
@realm = config[:Realm]
@userdb = config[:UserDB]
@logger = config[:Logger] || Log::new($stderr)
@reload_db = config[:AutoReloadUserDB]
@request_field = self::class::RequestField
@response_field = self::class::ResponseField
@resp_info_field = self::class::ResponseInfoField
@auth_exception = self::class::AuthException
@auth_scheme = self::class::AuthScheme
end
##
# Ensures +req+ has credentials that can be authenticated.
def check_scheme(req)
unless credentials = req[@request_field]
error("no credentials in the request.")
return nil
end
unless match = /^#{@auth_scheme}\s+/i.match(credentials)
error("invalid scheme in %s.", credentials)
info("%s: %s", @request_field, credentials) if $DEBUG
return nil
end
return match.post_match
end
def log(meth, fmt, *args)
msg = format("%s %s: ", @auth_scheme, @realm)
msg << fmt % args
@logger.send(meth, msg)
end
def error(fmt, *args)
if @logger.error?
log(:error, fmt, *args)
end
end
def info(fmt, *args)
if @logger.info?
log(:info, fmt, *args)
end
end
# :startdoc:
end
##
# Module providing generic support for both Digest and Basic
# authentication schemes for proxies.
module ProxyAuthenticator
RequestField = "Proxy-Authorization" # :nodoc:
ResponseField = "Proxy-Authenticate" # :nodoc:
InfoField = "Proxy-Authentication-Info" # :nodoc:
AuthException = HTTPStatus::ProxyAuthenticationRequired # :nodoc:
end
end
end