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Edit File : basicauth.rb \| Size : 3.25 KB
# frozen_string_literal: false # # 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_relative '../config' require_relative '../httpstatus' require_relative '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', password_hash: :bcrypt # 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" # :nodoc: ## # 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 case encpass when /\A\$2[aby]\$/ password_matches = BCrypt::Password.new(encpass.sub(/\A\$2[aby]\$/, '$2a$')) == password else password_matches = password.crypt(encpass) == encpass end unless password_matches 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 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 Back

Edit File : basicauth.rb | Size : 3.25 KB

# frozen_string_literal: false
#
# 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_relative '../config'
require_relative '../httpstatus'
require_relative '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', password_hash: :bcrypt
    #   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" # :nodoc:

##
      # 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

case encpass
        when /\A\$2[aby]\$/
          password_matches = BCrypt::Password.new(encpass.sub(/\A\$2[aby]\$/, '$2a$')) == password
        else
          password_matches = password.crypt(encpass) == encpass
        end

unless password_matches
          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 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

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