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|
# encoding: UTF-8
require 'digest/sha1'
require 'xmlrpc/client'
#
# This allows poking of the SSL attributes of the http client.
#
module XMLRPC ; class Client ; attr_reader :http ; end ; end
module Mauve
#
# Base class for authentication.
#
class Authentication
ORDER = []
# Authenticate a user.
#
# @param [String] login
# @param [String] password
#
# @return [FalseClass] Always returns false.
def authenticate(login, password)
raise ArgumentError.new("Login must be a string, not a #{login.class}") if String != login.class
raise ArgumentError.new("Password must be a string, not a #{password.class}") if String != password.class
raise ArgumentError.new("Login or/and password is/are empty.") if login.empty? || password.empty?
false
end
# @return [Log4r::Logger]
def logger
self.class.logger
end
# @return [Log4r::Logger]
def self.logger
@logger ||= Log4r::Logger.new(self.to_s)
end
# This calls all classes in the ORDER array one by one. If all classes
# fail, a 5 second sleep rate-limits authentication attempts.
#
# @param [String] login
# @param [String] password
#
# @return [Boolean] Success or failure.
#
def self.authenticate(login, password)
result = false
ORDER.any? do |klass|
auth = klass.new
result = begin
auth.authenticate(login, password)
rescue StandardError => ex
logger.error "#{ex.class}: #{ex.to_s} during #{auth.class} for #{login}"
logger.debug ex.backtrace.join("\n")
false
end
logger.info "Authenticated #{login} using #{auth.class.to_s}" if true == result
result
end
unless true == result
logger.info "Authentication for #{login} failed"
# Rate limit
sleep Configuration.current.failed_login_delay
end
result
end
end
# This is the Bytemark authentication mechanism.
#
class AuthBytemark < Authentication
Mauve::Authentication::ORDER << self
# Authenticate against the Bytemark server
#
# @param [String] login
# @param [String] password
#
# @return [Boolean]
def authenticate(login, password)
super
#
# Don't bother checking if no auth_url has been set.
#
return false unless Configuration.current.bytemark_auth_url.is_a?(URI)
#
# Don't bother checking if the person doesn't exist.
#
return false unless Mauve::Configuration.current.people.has_key?(login)
uri = Configuration.current.bytemark_auth_url
timeout = Configuration.current.remote_http_timeout
# host=nil, path=nil, port=nil, proxy_host=nil, proxy_port=nil, user=nil, password=nil, use_ssl=nil, timeout=nil)
client = XMLRPC::Client.new(uri.host, uri.path, uri.port, nil, nil, uri.user, uri.password, uri.scheme == "https", timeout)
#
# Make sure we verify our peer before attempting login.
#
if client.http.use_ssl?
client.http.ca_path = "/etc/ssl/certs/" if File.directory?("/etc/ssl/certs")
client.http.verify_mode = Configuration.current.remote_https_verify_mode
end
begin
proxy = client.proxy("bytemark.auth")
challenge = proxy.getChallengeForUser(login)
response = Digest::SHA1.new.update(challenge).update(password).hexdigest
proxy.login(login, response)
return true
rescue XMLRPC::FaultException => fault
logger.warn "#{self.class} for #{login} failed"
logger.debug "#{fault.faultCode}: #{fault.faultString}"
return false
rescue IOError => ex
logger.warn "#{ex.class} during auth for #{login} (#{ex.to_s})"
return false
end
end
end
# This is the local authentication mechanism, i.e. against the values in the
# Mauve config file.
#
class AuthLocal < Authentication
Mauve::Authentication::ORDER << self
# Authenticate against the local configuration
#
# @param [String] login
# @param [String] password
#
# @return [Boolean]
def authenticate(login,password)
super
#
# Don't bother checking if the person doesn't exist.
#
return false unless Mauve::Configuration.current.people.has_key?(login)
#
# Don't bother checking if no password has been set.
#
return false if Mauve::Configuration.current.people[login].password.nil?
if ( Digest::SHA1.hexdigest(password) == Mauve::Configuration.current.people[login].password )
return true
else
logger.warn "#{self.class} for #{login} failed"
return false
end
end
end
end
|
