Unixify all line endings.

Some files had DOS-style line endings. Change all of them to Unix-style.

6 files changed, 4382 insertions, 4382 deletions

diff --git a/lib/rbot/botuser.rb b/lib/rbot/botuser.rb
index b388b7f4..c77db4a5 100644
--- a/lib/rbot/botuser.rb
+++ b/lib/rbot/botuser.rb
@@ -1,924 +1,924 @@
-#-- vim:sw=2:et

-#++

-# :title: User management

-#

-# rbot user management

-# Author:: Giuseppe Bilotta (giuseppe.bilotta@gmail.com)

-# Copyright:: Copyright (c) 2006 Giuseppe Bilotta

-# License:: GPLv2

-

-require 'singleton'

-require 'set'

-require 'rbot/maskdb'

-

-# This would be a good idea if it was failproof, but the truth

-# is that other methods can indirectly modify the hash. *sigh*

-#

-# class AuthNotifyingHash < Hash

-#   %w(clear default= delete delete_if replace invert

-#      merge! update rehash reject! replace shift []= store).each { |m|

-#     class_eval {

-#       define_method(m) { |*a|

-#         r = super(*a)

-#         Irc::Bot::Auth.manager.set_changed

-#         r

-#       }

-#     }

-#   }

-# end

-# 

-

-module Irc

-class Bot

-

-

-  # This module contains the actual Authentication stuff

-  #

-  module Auth

-

-    Config.register Config::StringValue.new( 'auth.password',

-      :default => 'rbotauth', :wizard => true,

-      :on_change => Proc.new {|bot, v| bot.auth.botowner.password = v},

-      :desc => _('Password for the bot owner'))

-    Config.register Config::BooleanValue.new( 'auth.login_by_mask',

-      :default => 'true',

-      :desc => _('Set false to prevent new botusers from logging in without a password when the user netmask is known'))

-    Config.register Config::BooleanValue.new( 'auth.autologin',

-      :default => 'true',

-      :desc => _('Set false to prevent new botusers from recognizing IRC users without a need to manually login'))

-    Config.register Config::BooleanValue.new( 'auth.autouser',

-      :default => 'false',

-      :desc => _('Set true to allow new botusers to be created automatically'))

-    # Config.register Config::IntegerValue.new( 'auth.default_level',

-    #   :default => 10, :wizard => true,

-    #   :desc => 'The default level for new/unknown users' )

-

-    # Generate a random password of length _l_

-    #

-    def Auth.random_password(l=8)

-      pwd = ""

-      l.times do

-        pwd << (rand(26) + (rand(2) == 0 ? 65 : 97) ).chr

-      end

-      return pwd

-    end

-

-

-    # An Irc::Bot::Auth::Command defines a command by its "path":

-    #

-    #   base::command::subcommand::subsubcommand::subsubsubcommand

-    #

-    class Command

-

-      attr_reader :command, :path

-

-      # A method that checks if a given _cmd_ is in a form that can be

-      # reduced into a canonical command path, and if so, returns it

-      #

-      def sanitize_command_path(cmd)

-        pre = cmd.to_s.downcase.gsub(/^\*?(?:::)?/,"").gsub(/::$/,"")

-        return pre if pre.empty?

-        return pre if pre =~ /^\S+(::\S+)*$/

-        raise TypeError, "#{cmd.inspect} is not a valid command"

-      end

-

-      # Creates a new Command from a given string; you can then access

-      # the command as a symbol with the :command method and the whole

-      # path as :path

-      #

-      #   Command.new("core::auth::save").path => [:"*", :"core", :"core::auth", :"core::auth::save"]

-      #

-      #   Command.new("core::auth::save").command => :"core::auth::save"

-      #

-      def initialize(cmd)

-        cmdpath = sanitize_command_path(cmd).split('::')

-        seq = cmdpath.inject(["*"]) { |list, cmd|

-          list << (list.length > 1 ? list.last + "::" : "") + cmd

-        }

-        @path = seq.map { |k|

-          k.to_sym

-        }

-        @command = path.last

-        debug "Created command #{@command.inspect} with path #{@path.pretty_inspect}"

-      end

-

-      # Returs self

-      def to_irc_auth_command

-        self

-      end

-

-    end

-

-  end

-

-end

-end

-

-

-class String

-

-  # Returns an Irc::Bot::Auth::Comand from the receiver

-  def to_irc_auth_command

-    Irc::Bot::Auth::Command.new(self)

-  end

-

-end

-

-

-class Symbol

-

-  # Returns an Irc::Bot::Auth::Comand from the receiver

-  def to_irc_auth_command

-    Irc::Bot::Auth::Command.new(self)

-  end

-

-end

-

-

-module Irc

-class Bot

-

-

-  module Auth

-

-

-    # This class describes a permission set

-    class PermissionSet

-

-      attr_reader :perm

-      # Create a new (empty) PermissionSet

-      #

-      def initialize

-        @perm = {}

-      end

-

-      # Inspection simply inspects the internal hash

-      def inspect

-        @perm.inspect

-      end

-

-      # Sets the permission for command _cmd_ to _val_,

-      #

-      def set_permission(str, val)

-        cmd = str.to_irc_auth_command

-        case val

-        when true, false

-          @perm[cmd.command] = val

-        when nil

-          @perm.delete(cmd.command)

-        else

-          raise TypeError, "#{val.inspect} must be true or false" unless [true,false].include?(val)

-        end

-      end

-

-      # Resets the permission for command _cmd_

-      #

-      def reset_permission(cmd)

-        set_permission(cmd, nil)

-      end

-

-      # Tells if command _cmd_ is permitted. We do this by returning

-      # the value of the deepest Command#path that matches.

-      #

-      def permit?(str)

-        cmd = str.to_irc_auth_command

-        # TODO user-configurable list of always-allowed commands,

-        # for admins that want to set permissions -* for everybody

-        return true if cmd.command == :login

-        allow = nil

-        cmd.path.reverse.each { |k|

-          if @perm.has_key?(k)

-            allow = @perm[k]

-            break

-          end

-        }

-        return allow

-      end

-

-    end

-

-

-    # This is the error that gets raised when an invalid password is met

-    #

-    class InvalidPassword < RuntimeError

-    end

-

-

-    # This is the basic class for bot users: they have a username, a

-    # password, a list of netmasks to match against, and a list of

-    # permissions. A BotUser can be marked as 'transient', usually meaning

-    # it's not intended for permanent storage. Transient BotUsers have lower

-    # priority than nontransient ones for autologin purposes.

-    #

-    # To initialize a BotUser, you pass a _username_ and an optional

-    # hash of options. Currently, only two options are recognized:

-    #

-    # transient:: true or false, determines if the BotUser is transient or

-    #             permanent (default is false, permanent BotUser).

-    #

-    #             Transient BotUsers are initialized by prepending an

-    #             asterisk (*) to the username, and appending a sanitized

-    #             version of the object_id. The username can be empty.

-    #             A random password is generated.

-    #

-    #             Permanent Botusers need the username as is, and no

-    #             password is generated.

-    #

-    # masks::     an array of Netmasks to initialize the NetmaskList. This

-    #             list is used as-is for permanent BotUsers.

-    #

-    #             Transient BotUsers will alter the list elements which are

-    #             Irc::User by globbing the nick and any initial nonletter

-    #             part of the ident.

-    #

-    #             The masks option is optional for permanent BotUsers, but

-    #             obligatory (non-empty) for transients.

-    #

-    class BotUser

-

-      attr_reader :username

-      attr_reader :password

-      attr_reader :netmasks

-      attr_reader :perm

-      attr_writer :login_by_mask

-      attr_writer :transient

-

-      def autologin=(vnew)

-        vold = @autologin

-        @autologin = vnew

-        if vold && !vnew

-          @netmasks.each { |n| Auth.manager.maskdb.remove(self, n) }

-        elsif vnew && !vold

-          @netmasks.each { |n| Auth.manager.maskdb.add(self, n) }

-        end

-      end

-

-      # Checks if the BotUser is transient

-      def transient?

-        @transient

-      end

-

-      # Checks if the BotUser is permanent (not transient)

-      def permanent?

-        !@transient

-      end

-

-      # Sets if the BotUser is permanent or not

-      def permanent=(bool)

-        @transient=!bool

-      end

-

-      # Make the BotUser permanent

-      def make_permanent(name)

-        raise TypeError, "permanent already" if permanent?

-        @username = BotUser.sanitize_username(name)

-        @transient = false

-        reset_autologin

-        reset_password # or not?

-        @netmasks.dup.each do |m|

-          delete_netmask(m)

-          add_netmask(m.generalize)

-        end

-      end

-

-      # Create a new BotUser with given username

-      def initialize(username, options={})

-        opts = {:transient => false}.merge(options)

-        @transient = opts[:transient]

-

-        if @transient

-          @username = "*"

-          @username << BotUser.sanitize_username(username) if username and not username.to_s.empty?

-          @username << BotUser.sanitize_username(object_id)

-          reset_password

-          @login_by_mask=true

-          @autologin=true

-        else

-          @username = BotUser.sanitize_username(username)

-          @password = nil

-          reset_login_by_mask

-          reset_autologin

-        end

-

-        @netmasks = NetmaskList.new

-        if opts.key?(:masks) and opts[:masks]

-          masks = opts[:masks]

-          masks = [masks] unless masks.respond_to?(:each)

-          masks.each { |m|

-            mask = m.to_irc_netmask

-            if @transient and User === m

-              mask.nick = "*"

-              mask.host = m.host.dup

-              mask.user = "*" + m.user.sub(/^\w?[^\w]+/,'')

-            end

-            add_netmask(mask) unless mask.to_s == "*"

-          }

-        end

-        raise "must provide a usable mask for transient BotUser #{@username}" if @transient and @netmasks.empty?

-

-        @perm = {}

-      end

-

-      # Inspection

-      def inspect

-        str = self.__to_s__[0..-2]

-        str << " (transient)" if @transient

-        str << ":"

-        str << " @username=#{@username.inspect}"

-        str << " @netmasks=#{@netmasks.inspect}"

-        str << " @perm=#{@perm.inspect}"

-        str << " @login_by_mask=#{@login_by_mask}"

-        str << " @autologin=#{@autologin}"

-        str << ">"

-      end

-

-      # In strings

-      def to_s

-        @username

-      end

-

-      # Convert into a hash

-      def to_hash

-        {

-          :username => @username,

-          :password => @password,

-          :netmasks => @netmasks,

-          :perm => @perm,

-          :login_by_mask => @login_by_mask,

-          :autologin => @autologin,

-        }

-      end

-

-      # Do we allow logging in without providing the password?

-      #

-      def login_by_mask?

-        @login_by_mask

-      end

-

-      # Reset the login-by-mask option

-      #

-      def reset_login_by_mask

-        @login_by_mask = Auth.manager.bot.config['auth.login_by_mask'] unless defined?(@login_by_mask)

-      end

-

-      # Reset the autologin option

-      #

-      def reset_autologin

-        @autologin = Auth.manager.bot.config['auth.autologin'] unless defined?(@autologin)

-      end

-

-      # Do we allow automatic logging in?

-      #

-      def autologin?

-        @autologin

-      end

-

-      # Restore from hash

-      def from_hash(h)

-        @username = h[:username] if h.has_key?(:username)

-        @password = h[:password] if h.has_key?(:password)

-        @login_by_mask = h[:login_by_mask] if h.has_key?(:login_by_mask)

-        @autologin = h[:autologin] if h.has_key?(:autologin)

-        if h.has_key?(:netmasks)

-          @netmasks = h[:netmasks]

-          debug @netmasks

-          @netmasks.each { |n| Auth.manager.maskdb.add(self, n) } if @autologin

-          debug @netmasks

-        end

-        @perm = h[:perm] if h.has_key?(:perm)

-      end

-

-      # This method sets the password if the proposed new password

-      # is valid

-      def password=(pwd=nil)

-        pass = pwd.to_s

-        if pass.empty?

-          reset_password

-        else

-          begin

-            raise InvalidPassword, "#{pass} contains invalid characters" if pass !~ /^[\x21-\x7e]+$/

-            raise InvalidPassword, "#{pass} too short" if pass.length < 4

-            @password = pass

-          rescue InvalidPassword => e

-            raise e

-          rescue => e

-            raise InvalidPassword, "Exception #{e.inspect} while checking #{pass.inspect} (#{pwd.inspect})"

-          end

-        end

-      end

-

-      # Resets the password by creating a new onw

-      def reset_password

-        @password = Auth.random_password

-      end

-

-      # Sets the permission for command _cmd_ to _val_ on channel _chan_

-      #

-      def set_permission(cmd, val, chan="*")

-        k = chan.to_s.to_sym

-        @perm[k] = PermissionSet.new unless @perm.has_key?(k)

-        @perm[k].set_permission(cmd, val)

-      end

-

-      # Resets the permission for command _cmd_ on channel _chan_

-      #

-      def reset_permission(cmd, chan ="*")

-        set_permission(cmd, nil, chan)

-      end

-

-      # Checks if BotUser is allowed to do something on channel _chan_,

-      # or on all channels if _chan_ is nil

-      #

-      def permit?(cmd, chan=nil)

-        if chan

-          k = chan.to_s.to_sym

-        else

-          k = :*

-        end

-        allow = nil

-        if @perm.has_key?(k)

-          allow = @perm[k].permit?(cmd)

-        end

-        return allow

-      end

-

-      # Adds a Netmask

-      #

-      def add_netmask(mask)

-        m = mask.to_irc_netmask

-        @netmasks << m

-        if self.autologin?

-          Auth.manager.maskdb.add(self, m)

-          Auth.manager.logout_transients(m) if self.permanent?

-        end

-      end

-

-      # Removes a Netmask

-      #

-      def delete_netmask(mask)

-        m = mask.to_irc_netmask

-        @netmasks.delete(m)

-        Auth.manager.maskdb.remove(self, m) if self.autologin?

-      end

-

-      # Reset Netmasks, clearing @netmasks

-      #

-      def reset_netmasks

-        @netmasks.each { |m|

-          Auth.manager.maskdb.remove(self, m) if self.autologin?

-        }

-        @netmasks.clear

-      end

-

-      # This method checks if BotUser has a Netmask that matches _user_

-      #

-      def knows?(usr)

-        user = usr.to_irc_user

-        !!@netmasks.find { |n| user.matches? n }

-      end

-

-      # This method gets called when User _user_ wants to log in.

-      # It returns true or false depending on whether the password

-      # is right. If it is, the Netmask of the user is added to the

-      # list of acceptable Netmask unless it's already matched.

-      def login(user, password=nil)

-        if password == @password or (password.nil? and (@login_by_mask || @autologin) and knows?(user))

-          add_netmask(user) unless knows?(user)

-          debug "#{user} logged in as #{self.inspect}"

-          return true

-        else

-          return false

-        end

-      end

-

-      # # This method gets called when User _user_ has logged out as this BotUser

-      # def logout(user)

-      #   delete_netmask(user) if knows?(user)

-      # end

-

-      # This method sanitizes a username by chomping, downcasing

-      # and replacing any nonalphanumeric character with _

-      #

-      def BotUser.sanitize_username(name)

-        candidate = name.to_s.chomp.downcase.gsub(/[^a-z0-9]/,"_")

-        raise "sanitized botusername #{candidate} too short" if candidate.length < 3

-        return candidate

-      end

-

-    end

-

-    # This is the default BotUser: it's used for all users which haven't

-    # identified with the bot

-    #

-    class DefaultBotUserClass < BotUser

-

-      private :add_netmask, :delete_netmask

-

-      include Singleton

-

-      # The default BotUser is named 'everyone'

-      #

-      def initialize

-        reset_login_by_mask

-        reset_autologin

-        super("everyone")

-        @default_perm = PermissionSet.new

-      end

-

-      # This method returns without changing anything

-      #

-      def login_by_mask=(val)

-        debug "Tried to change the login-by-mask for default bot user, ignoring"

-        return @login_by_mask

-      end

-

-      # The default botuser allows logins by mask

-      #

-      def reset_login_by_mask

-        @login_by_mask = true

-      end

-

-      # This method returns without changing anything

-      #

-      def autologin=(val)

-        debug "Tried to change the autologin for default bot user, ignoring"

-        return

-      end

-

-      # The default botuser doesn't allow autologin (meaningless)

-      #

-      def reset_autologin

-        @autologin = false

-      end

-

-      # Sets the default permission for the default user (i.e. the ones

-      # set by the BotModule writers) on all channels

-      #

-      def set_default_permission(cmd, val)

-        @default_perm.set_permission(Command.new(cmd), val)

-        debug "Default permissions now: #{@default_perm.pretty_inspect}"

-      end

-

-      # default knows everybody

-      #

-      def knows?(user)

-        return true if user.to_irc_user

-      end

-

-      # We always allow logging in as the default user

-      def login(user, password)

-        return true

-      end

-

-      # DefaultBotUser will check the default_perm after checking

-      # the global ones

-      # or on all channels if _chan_ is nil

-      #

-      def permit?(cmd, chan=nil)

-        allow = super(cmd, chan)

-        if allow.nil? && chan.nil?

-          allow = @default_perm.permit?(cmd)

-        end

-        return allow

-      end

-

-    end

-

-    # Returns the only instance of DefaultBotUserClass

-    #

-    def Auth.defaultbotuser

-      return DefaultBotUserClass.instance

-    end

-

-    # This is the BotOwner: he can do everything

-    #

-    class BotOwnerClass < BotUser

-

-      include Singleton

-

-      def initialize

-        @login_by_mask = false

-        @autologin = true

-        super("owner")

-      end

-

-      def permit?(cmd, chan=nil)

-        return true

-      end

-

-    end

-

-    # Returns the only instance of BotOwnerClass

-    #

-    def Auth.botowner

-      return BotOwnerClass.instance

-    end

-

-

-    class BotUser

-      # Check if the current BotUser is the default one

-      def default?

-        return DefaultBotUserClass === self

-      end

-

-      # Check if the current BotUser is the owner

-      def owner?

-        return BotOwnerClass === self

-      end

-    end

-

-

-    # This is the ManagerClass singleton, used to manage

-    # Irc::User/Irc::Bot::Auth::BotUser connections and everything

-    #

-    class ManagerClass

-

-      include Singleton

-

-      attr_reader :maskdb

-      attr_reader :everyone

-      attr_reader :botowner

-      attr_reader :bot

-

-      # The instance manages two <code>Hash</code>es: one that maps

-      # <code>Irc::User</code>s onto <code>BotUser</code>s, and the other that maps

-      # usernames onto <code>BotUser</code>

-      def initialize

-        @everyone = Auth::defaultbotuser

-        @botowner = Auth::botowner

-        bot_associate(nil)

-      end

-

-      def bot_associate(bot)

-        raise "Cannot associate with a new bot! Save first" if defined?(@has_changes) && @has_changes

-

-        reset_hashes

-

-        # Associated bot

-        @bot = bot

-

-        # This variable is set to true when there have been changes

-        # to the botusers list, so that we know when to save

-        @has_changes = false

-      end

-

-      def set_changed

-        @has_changes = true

-      end

-

-      def reset_changed

-        @has_changes = false

-      end

-

-      def changed?

-        @has_changes

-      end

-

-      # resets the hashes

-      def reset_hashes

-        @botusers = Hash.new

-        @maskdb = NetmaskDb.new

-        @allbotusers = Hash.new

-        [everyone, botowner].each do |x|

-          @allbotusers[x.username.to_sym] = x

-        end

-      end

-

-      def load_array(ary, forced)

-        unless ary

-          warning "Tried to load an empty array"

-          return

-        end

-        raise "Won't load with unsaved changes" if @has_changes and not forced

-        reset_hashes

-        ary.each { |x|

-          raise TypeError, "#{x} should be a Hash" unless x.kind_of?(Hash)

-          u = x[:username]

-          unless include?(u)

-            create_botuser(u)

-          end

-          get_botuser(u).from_hash(x)

-          get_botuser(u).transient = false

-        }

-        @has_changes=false

-      end

-

-      def save_array

-        @allbotusers.values.map { |x|

-          x.transient? ? nil : x.to_hash

-        }.compact

-      end

-

-      # checks if we know about a certain BotUser username

-      def include?(botusername)

-        @allbotusers.has_key?(botusername.to_sym)

-      end

-

-      # Maps <code>Irc::User</code> to BotUser

-      def irc_to_botuser(ircuser)

-        logged = @botusers[ircuser.to_irc_user]

-        return logged if logged

-        return autologin(ircuser)

-      end

-

-      # creates a new BotUser

-      def create_botuser(name, password=nil)

-        n = BotUser.sanitize_username(name)

-        k = n.to_sym

-        raise "botuser #{n} exists" if include?(k)

-        bu = BotUser.new(n)

-        bu.password = password

-        @allbotusers[k] = bu

-        return bu

-      end

-

-      # returns the botuser with name _name_

-      def get_botuser(name)

-        @allbotusers.fetch(BotUser.sanitize_username(name).to_sym)

-      end

-

-      # Logs Irc::User _user_ in to BotUser _botusername_ with password _pwd_

-      #

-      # raises an error if _botusername_ is not a known BotUser username

-      #

-      # It is possible to autologin by Netmask, on request

-      #

-      def login(user, botusername, pwd=nil)

-        ircuser = user.to_irc_user

-        n = BotUser.sanitize_username(botusername)

-        k = n.to_sym

-        raise "No such BotUser #{n}" unless include?(k)

-        if @botusers.has_key?(ircuser)

-          return true if @botusers[ircuser].username == n

-          # TODO

-          # @botusers[ircuser].logout(ircuser)

-        end

-        bu = @allbotusers[k]

-        if bu.login(ircuser, pwd)

-          @botusers[ircuser] = bu

-          return true

-        end

-        return false

-      end

-

-      # Tries to auto-login Irc::User _user_ by looking at the known botusers that allow autologin

-      # and trying to login without a password

-      #

-      def autologin(user)

-        ircuser = user.to_irc_user

-        debug "Trying to autologin #{ircuser}"

-        return @botusers[ircuser] if @botusers.has_key?(ircuser)

-        bu = maskdb.find(ircuser)

-        if bu

-          debug "trying #{bu}"

-          bu.login(ircuser) or raise '...what?!'

-          @botusers[ircuser] = bu

-          return bu

-        end

-        # Finally, create a transient if we're set to allow it

-        if @bot.config['auth.autouser']

-          bu = create_transient_botuser(ircuser)

-          @botusers[ircuser] = bu

-          return bu

-        end

-        return everyone

-      end

-

-      # Creates a new transient BotUser associated with Irc::User _user_,

-      # automatically logging him in. Note that transient botuser creation can

-      # fail, typically if we don't have the complete user netmask (e.g. for

-      # messages coming in from a linkbot)

-      #

-      def create_transient_botuser(user)

-        ircuser = user.to_irc_user

-        bu = everyone

-        begin

-          bu = BotUser.new(ircuser, :transient => true, :masks => ircuser)

-          bu.login(ircuser)

-        rescue

-          warning "failed to create transient for #{user}"

-          error $!

-        end

-        return bu

-      end

-

-      # Logs out any Irc::User matching Irc::Netmask _m_ and logged in

-      # to a transient BotUser

-      #

-      def logout_transients(m)

-        debug "to check: #{@botusers.keys.join ' '}"

-        @botusers.keys.each do |iu|

-          debug "checking #{iu.fullform} against #{m.fullform}"

-          bu = @botusers[iu]

-          bu.transient? or next

-          iu.matches?(m) or next

-          @botusers.delete(iu).autologin = false

-        end

-      end

-

-      # Makes transient BotUser _user_ into a permanent BotUser

-      # named _name_; if _user_ is an Irc::User, act on the transient

-      # BotUser (if any) it's logged in as

-      #

-      def make_permanent(user, name)

-        buname = BotUser.sanitize_username(name)

-        # TODO merge BotUser instead?

-        raise "there's already a BotUser called #{name}" if include?(buname)

-

-        tuser = nil

-        case user

-        when String, Irc::User

-          tuser = irc_to_botuser(user)

-        when BotUser

-          tuser = user

-        else

-          raise TypeError, "sorry, don't know how to make #{user.class} into a permanent BotUser"

-        end

-        return nil unless tuser

-        raise TypeError, "#{tuser} is not transient" unless tuser.transient?

-

-        tuser.make_permanent(buname)

-        @allbotusers[tuser.username.to_sym] = tuser

-

-        return tuser

-      end

-

-      # Checks if User _user_ can do _cmd_ on _chan_.

-      #

-      # Permission are checked in this order, until a true or false

-      # is returned:

-      # * associated BotUser on _chan_

-      # * associated BotUser on all channels

-      # * everyone on _chan_

-      # * everyone on all channels

-      #

-      def permit?(user, cmdtxt, channel=nil)

-        if user.class <= BotUser

-          botuser = user

-        else

-          botuser = irc_to_botuser(user)

-        end

-        cmd = cmdtxt.to_irc_auth_command

-

-        chan = channel

-        case chan

-        when User

-          chan = "?"

-        when Channel

-          chan = chan.name

-        end

-

-        allow = nil

-

-        allow = botuser.permit?(cmd, chan) if chan

-        return allow unless allow.nil?

-        allow = botuser.permit?(cmd)

-        return allow unless allow.nil?

-

-        unless botuser == everyone

-          allow = everyone.permit?(cmd, chan) if chan

-          return allow unless allow.nil?

-          allow = everyone.permit?(cmd)

-          return allow unless allow.nil?

-        end

-

-        raise "Could not check permission for user #{user.inspect} to run #{cmdtxt.inspect} on #{chan.inspect}"

-      end

-

-      # Checks if command _cmd_ is allowed to User _user_ on _chan_, optionally

-      # telling if the user is authorized

-      #

-      def allow?(cmdtxt, user, chan=nil)

-        if permit?(user, cmdtxt, chan)

-          return true

-        else

-          # cmds = cmdtxt.split('::')

-          # @bot.say chan, "you don't have #{cmds.last} (#{cmds.first}) permissions here" if chan

-          @bot.say chan, _("%{user}, you don't have '%{command}' permissions here") %

-                        {:user=>user, :command=>cmdtxt} if chan

-          return false

-        end

-      end

-

-    end

-

-    # Returns the only instance of ManagerClass

-    #

-    def Auth.manager

-      return ManagerClass.instance

-    end

-

-  end

-end

-

-  class User

-

-    # A convenience method to automatically found the botuser

-    # associated with the receiver

-    #

-    def botuser

-      Irc::Bot::Auth.manager.irc_to_botuser(self)

-    end

-  end

-

-end

+#-- vim:sw=2:et
+#++
+# :title: User management
+#
+# rbot user management
+# Author:: Giuseppe Bilotta (giuseppe.bilotta@gmail.com)
+# Copyright:: Copyright (c) 2006 Giuseppe Bilotta
+# License:: GPLv2
+
+require 'singleton'
+require 'set'
+require 'rbot/maskdb'
+
+# This would be a good idea if it was failproof, but the truth
+# is that other methods can indirectly modify the hash. *sigh*
+#
+# class AuthNotifyingHash < Hash
+#   %w(clear default= delete delete_if replace invert
+#      merge! update rehash reject! replace shift []= store).each { |m|
+#     class_eval {
+#       define_method(m) { |*a|
+#         r = super(*a)
+#         Irc::Bot::Auth.manager.set_changed
+#         r
+#       }
+#     }
+#   }
+# end
+# 
+
+module Irc
+class Bot
+
+
+  # This module contains the actual Authentication stuff
+  #
+  module Auth
+
+    Config.register Config::StringValue.new( 'auth.password',
+      :default => 'rbotauth', :wizard => true,
+      :on_change => Proc.new {|bot, v| bot.auth.botowner.password = v},
+      :desc => _('Password for the bot owner'))
+    Config.register Config::BooleanValue.new( 'auth.login_by_mask',
+      :default => 'true',
+      :desc => _('Set false to prevent new botusers from logging in without a password when the user netmask is known'))
+    Config.register Config::BooleanValue.new( 'auth.autologin',
+      :default => 'true',
+      :desc => _('Set false to prevent new botusers from recognizing IRC users without a need to manually login'))
+    Config.register Config::BooleanValue.new( 'auth.autouser',
+      :default => 'false',
+      :desc => _('Set true to allow new botusers to be created automatically'))
+    # Config.register Config::IntegerValue.new( 'auth.default_level',
+    #   :default => 10, :wizard => true,
+    #   :desc => 'The default level for new/unknown users' )
+
+    # Generate a random password of length _l_
+    #
+    def Auth.random_password(l=8)
+      pwd = ""
+      l.times do
+        pwd << (rand(26) + (rand(2) == 0 ? 65 : 97) ).chr
+      end
+      return pwd
+    end
+
+
+    # An Irc::Bot::Auth::Command defines a command by its "path":
+    #
+    #   base::command::subcommand::subsubcommand::subsubsubcommand
+    #
+    class Command
+
+      attr_reader :command, :path
+
+      # A method that checks if a given _cmd_ is in a form that can be
+      # reduced into a canonical command path, and if so, returns it
+      #
+      def sanitize_command_path(cmd)
+        pre = cmd.to_s.downcase.gsub(/^\*?(?:::)?/,"").gsub(/::$/,"")
+        return pre if pre.empty?
+        return pre if pre =~ /^\S+(::\S+)*$/
+        raise TypeError, "#{cmd.inspect} is not a valid command"
+      end
+
+      # Creates a new Command from a given string; you can then access
+      # the command as a symbol with the :command method and the whole
+      # path as :path
+      #
+      #   Command.new("core::auth::save").path => [:"*", :"core", :"core::auth", :"core::auth::save"]
+      #
+      #   Command.new("core::auth::save").command => :"core::auth::save"
+      #
+      def initialize(cmd)
+        cmdpath = sanitize_command_path(cmd).split('::')
+        seq = cmdpath.inject(["*"]) { |list, cmd|
+          list << (list.length > 1 ? list.last + "::" : "") + cmd
+        }
+        @path = seq.map { |k|
+          k.to_sym
+        }
+        @command = path.last
+        debug "Created command #{@command.inspect} with path #{@path.pretty_inspect}"
+      end
+
+      # Returs self
+      def to_irc_auth_command
+        self
+      end
+
+    end
+
+  end
+
+end
+end
+
+
+class String
+
+  # Returns an Irc::Bot::Auth::Comand from the receiver
+  def to_irc_auth_command
+    Irc::Bot::Auth::Command.new(self)
+  end
+
+end
+
+
+class Symbol
+
+  # Returns an Irc::Bot::Auth::Comand from the receiver
+  def to_irc_auth_command
+    Irc::Bot::Auth::Command.new(self)
+  end
+
+end
+
+
+module Irc
+class Bot
+
+
+  module Auth
+
+
+    # This class describes a permission set
+    class PermissionSet
+
+      attr_reader :perm
+      # Create a new (empty) PermissionSet
+      #
+      def initialize
+        @perm = {}
+      end
+
+      # Inspection simply inspects the internal hash
+      def inspect
+        @perm.inspect
+      end
+
+      # Sets the permission for command _cmd_ to _val_,
+      #
+      def set_permission(str, val)
+        cmd = str.to_irc_auth_command
+        case val
+        when true, false
+          @perm[cmd.command] = val
+        when nil
+          @perm.delete(cmd.command)
+        else
+          raise TypeError, "#{val.inspect} must be true or false" unless [true,false].include?(val)
+        end
+      end
+
+      # Resets the permission for command _cmd_
+      #
+      def reset_permission(cmd)
+        set_permission(cmd, nil)
+      end
+
+      # Tells if command _cmd_ is permitted. We do this by returning
+      # the value of the deepest Command#path that matches.
+      #
+      def permit?(str)
+        cmd = str.to_irc_auth_command
+        # TODO user-configurable list of always-allowed commands,
+        # for admins that want to set permissions -* for everybody
+        return true if cmd.command == :login
+        allow = nil
+        cmd.path.reverse.each { |k|
+          if @perm.has_key?(k)
+            allow = @perm[k]
+            break
+          end
+        }
+        return allow
+      end
+
+    end
+
+
+    # This is the error that gets raised when an invalid password is met
+    #
+    class InvalidPassword < RuntimeError
+    end
+
+
+    # This is the basic class for bot users: they have a username, a
+    # password, a list of netmasks to match against, and a list of
+    # permissions. A BotUser can be marked as 'transient', usually meaning
+    # it's not intended for permanent storage. Transient BotUsers have lower
+    # priority than nontransient ones for autologin purposes.
+    #
+    # To initialize a BotUser, you pass a _username_ and an optional
+    # hash of options. Currently, only two options are recognized:
+    #
+    # transient:: true or false, determines if the BotUser is transient or
+    #             permanent (default is false, permanent BotUser).
+    #
+    #             Transient BotUsers are initialized by prepending an
+    #             asterisk (*) to the username, and appending a sanitized
+    #             version of the object_id. The username can be empty.
+    #             A random password is generated.
+    #
+    #             Permanent Botusers need the username as is, and no
+    #             password is generated.
+    #
+    # masks::     an array of Netmasks to initialize the NetmaskList. This
+    #             list is used as-is for permanent BotUsers.
+    #
+    #             Transient BotUsers will alter the list elements which are
+    #             Irc::User by globbing the nick and any initial nonletter
+    #             part of the ident.
+    #
+    #             The masks option is optional for permanent BotUsers, but
+    #             obligatory (non-empty) for transients.
+    #
+    class BotUser
+
+      attr_reader :username
+      attr_reader :password
+      attr_reader :netmasks
+      attr_reader :perm
+      attr_writer :login_by_mask
+      attr_writer :transient
+
+      def autologin=(vnew)
+        vold = @autologin
+        @autologin = vnew
+        if vold && !vnew
+          @netmasks.each { |n| Auth.manager.maskdb.remove(self, n) }
+        elsif vnew && !vold
+          @netmasks.each { |n| Auth.manager.maskdb.add(self, n) }
+        end
+      end
+
+      # Checks if the BotUser is transient
+      def transient?
+        @transient
+      end
+
+      # Checks if the BotUser is permanent (not transient)
+      def permanent?
+        !@transient
+      end
+
+      # Sets if the BotUser is permanent or not
+      def permanent=(bool)
+        @transient=!bool
+      end
+
+      # Make the BotUser permanent
+      def make_permanent(name)
+        raise TypeError, "permanent already" if permanent?
+        @username = BotUser.sanitize_username(name)
+        @transient = false
+        reset_autologin
+        reset_password # or not?
+        @netmasks.dup.each do |m|
+          delete_netmask(m)
+          add_netmask(m.generalize)
+        end
+      end
+
+      # Create a new BotUser with given username
+      def initialize(username, options={})
+        opts = {:transient => false}.merge(options)
+        @transient = opts[:transient]
+
+        if @transient
+          @username = "*"
+          @username << BotUser.sanitize_username(username) if username and not username.to_s.empty?
+          @username << BotUser.sanitize_username(object_id)
+          reset_password
+          @login_by_mask=true
+          @autologin=true
+        else
+          @username = BotUser.sanitize_username(username)
+          @password = nil
+          reset_login_by_mask
+          reset_autologin
+        end
+
+        @netmasks = NetmaskList.new
+        if opts.key?(:masks) and opts[:masks]
+          masks = opts[:masks]
+          masks = [masks] unless masks.respond_to?(:each)
+          masks.each { |m|
+            mask = m.to_irc_netmask
+            if @transient and User === m
+              mask.nick = "*"
+              mask.host = m.host.dup
+              mask.user = "*" + m.user.sub(/^\w?[^\w]+/,'')
+            end
+            add_netmask(mask) unless mask.to_s == "*"
+          }
+        end
+        raise "must provide a usable mask for transient BotUser #{@username}" if @transient and @netmasks.empty?
+
+        @perm = {}
+      end
+
+      # Inspection
+      def inspect
+        str = self.__to_s__[0..-2]
+        str << " (transient)" if @transient
+        str << ":"
+        str << " @username=#{@username.inspect}"
+        str << " @netmasks=#{@netmasks.inspect}"
+        str << " @perm=#{@perm.inspect}"
+        str << " @login_by_mask=#{@login_by_mask}"
+        str << " @autologin=#{@autologin}"
+        str << ">"
+      end
+
+      # In strings
+      def to_s
+        @username
+      end
+
+      # Convert into a hash
+      def to_hash
+        {
+          :username => @username,
+          :password => @password,
+          :netmasks => @netmasks,
+          :perm => @perm,
+          :login_by_mask => @login_by_mask,
+          :autologin => @autologin,
+        }
+      end
+
+      # Do we allow logging in without providing the password?
+      #
+      def login_by_mask?
+        @login_by_mask
+      end
+
+      # Reset the login-by-mask option
+      #
+      def reset_login_by_mask
+        @login_by_mask = Auth.manager.bot.config['auth.login_by_mask'] unless defined?(@login_by_mask)
+      end
+
+      # Reset the autologin option
+      #
+      def reset_autologin
+        @autologin = Auth.manager.bot.config['auth.autologin'] unless defined?(@autologin)
+      end
+
+      # Do we allow automatic logging in?
+      #
+      def autologin?
+        @autologin
+      end
+
+      # Restore from hash
+      def from_hash(h)
+        @username = h[:username] if h.has_key?(:username)
+        @password = h[:password] if h.has_key?(:password)
+        @login_by_mask = h[:login_by_mask] if h.has_key?(:login_by_mask)
+        @autologin = h[:autologin] if h.has_key?(:autologin)
+        if h.has_key?(:netmasks)
+          @netmasks = h[:netmasks]
+          debug @netmasks
+          @netmasks.each { |n| Auth.manager.maskdb.add(self, n) } if @autologin
+          debug @netmasks
+        end
+        @perm = h[:perm] if h.has_key?(:perm)
+      end
+
+      # This method sets the password if the proposed new password
+      # is valid
+      def password=(pwd=nil)
+        pass = pwd.to_s
+        if pass.empty?
+          reset_password
+        else
+          begin
+            raise InvalidPassword, "#{pass} contains invalid characters" if pass !~ /^[\x21-\x7e]+$/
+            raise InvalidPassword, "#{pass} too short" if pass.length < 4
+            @password = pass
+          rescue InvalidPassword => e
+            raise e
+          rescue => e
+            raise InvalidPassword, "Exception #{e.inspect} while checking #{pass.inspect} (#{pwd.inspect})"
+          end
+        end
+      end
+
+      # Resets the password by creating a new onw
+      def reset_password
+        @password = Auth.random_password
+      end
+
+      # Sets the permission for command _cmd_ to _val_ on channel _chan_
+      #
+      def set_permission(cmd, val, chan="*")
+        k = chan.to_s.to_sym
+        @perm[k] = PermissionSet.new unless @perm.has_key?(k)
+        @perm[k].set_permission(cmd, val)
+      end
+
+      # Resets the permission for command _cmd_ on channel _chan_
+      #
+      def reset_permission(cmd, chan ="*")
+        set_permission(cmd, nil, chan)
+      end
+
+      # Checks if BotUser is allowed to do something on channel _chan_,
+      # or on all channels if _chan_ is nil
+      #
+      def permit?(cmd, chan=nil)
+        if chan
+          k = chan.to_s.to_sym
+        else
+          k = :*
+        end
+        allow = nil
+        if @perm.has_key?(k)
+          allow = @perm[k].permit?(cmd)
+        end
+        return allow
+      end
+
+      # Adds a Netmask
+      #
+      def add_netmask(mask)
+        m = mask.to_irc_netmask
+        @netmasks << m
+        if self.autologin?
+          Auth.manager.maskdb.add(self, m)
+          Auth.manager.logout_transients(m) if self.permanent?
+        end
+      end
+
+      # Removes a Netmask
+      #
+      def delete_netmask(mask)
+        m = mask.to_irc_netmask
+        @netmasks.delete(m)
+        Auth.manager.maskdb.remove(self, m) if self.autologin?
+      end
+
+      # Reset Netmasks, clearing @netmasks
+      #
+      def reset_netmasks
+        @netmasks.each { |m|
+          Auth.manager.maskdb.remove(self, m) if self.autologin?
+        }
+        @netmasks.clear
+      end
+
+      # This method checks if BotUser has a Netmask that matches _user_
+      #
+      def knows?(usr)
+        user = usr.to_irc_user
+        !!@netmasks.find { |n| user.matches? n }
+      end
+
+      # This method gets called when User _user_ wants to log in.
+      # It returns true or false depending on whether the password
+      # is right. If it is, the Netmask of the user is added to the
+      # list of acceptable Netmask unless it's already matched.
+      def login(user, password=nil)
+        if password == @password or (password.nil? and (@login_by_mask || @autologin) and knows?(user))
+          add_netmask(user) unless knows?(user)
+          debug "#{user} logged in as #{self.inspect}"
+          return true
+        else
+          return false
+        end
+      end
+
+      # # This method gets called when User _user_ has logged out as this BotUser
+      # def logout(user)
+      #   delete_netmask(user) if knows?(user)
+      # end
+
+      # This method sanitizes a username by chomping, downcasing
+      # and replacing any nonalphanumeric character with _
+      #
+      def BotUser.sanitize_username(name)
+        candidate = name.to_s.chomp.downcase.gsub(/[^a-z0-9]/,"_")
+        raise "sanitized botusername #{candidate} too short" if candidate.length < 3
+        return candidate
+      end
+
+    end
+
+    # This is the default BotUser: it's used for all users which haven't
+    # identified with the bot
+    #
+    class DefaultBotUserClass < BotUser
+
+      private :add_netmask, :delete_netmask
+
+      include Singleton
+
+      # The default BotUser is named 'everyone'
+      #
+      def initialize
+        reset_login_by_mask
+        reset_autologin
+        super("everyone")
+        @default_perm = PermissionSet.new
+      end
+
+      # This method returns without changing anything
+      #
+      def login_by_mask=(val)
+        debug "Tried to change the login-by-mask for default bot user, ignoring"
+        return @login_by_mask
+      end
+
+      # The default botuser allows logins by mask
+      #
+      def reset_login_by_mask
+        @login_by_mask = true
+      end
+
+      # This method returns without changing anything
+      #
+      def autologin=(val)
+        debug "Tried to change the autologin for default bot user, ignoring"
+        return
+      end
+
+      # The default botuser doesn't allow autologin (meaningless)
+      #
+      def reset_autologin
+        @autologin = false
+      end
+
+      # Sets the default permission for the default user (i.e. the ones
+      # set by the BotModule writers) on all channels
+      #
+      def set_default_permission(cmd, val)
+        @default_perm.set_permission(Command.new(cmd), val)
+        debug "Default permissions now: #{@default_perm.pretty_inspect}"
+      end
+
+      # default knows everybody
+      #
+      def knows?(user)
+        return true if user.to_irc_user
+      end
+
+      # We always allow logging in as the default user
+      def login(user, password)
+        return true
+      end
+
+      # DefaultBotUser will check the default_perm after checking
+      # the global ones
+      # or on all channels if _chan_ is nil
+      #
+      def permit?(cmd, chan=nil)
+        allow = super(cmd, chan)
+        if allow.nil? && chan.nil?
+          allow = @default_perm.permit?(cmd)
+        end
+        return allow
+      end
+
+    end
+
+    # Returns the only instance of DefaultBotUserClass
+    #
+    def Auth.defaultbotuser
+      return DefaultBotUserClass.instance
+    end
+
+    # This is the BotOwner: he can do everything
+    #
+    class BotOwnerClass < BotUser
+
+      include Singleton
+
+      def initialize
+        @login_by_mask = false
+        @autologin = true
+        super("owner")
+      end
+
+      def permit?(cmd, chan=nil)
+        return true
+      end
+
+    end
+
+    # Returns the only instance of BotOwnerClass
+    #
+    def Auth.botowner
+      return BotOwnerClass.instance
+    end
+
+
+    class BotUser
+      # Check if the current BotUser is the default one
+      def default?
+        return DefaultBotUserClass === self
+      end
+
+      # Check if the current BotUser is the owner
+      def owner?
+        return BotOwnerClass === self
+      end
+    end
+
+
+    # This is the ManagerClass singleton, used to manage
+    # Irc::User/Irc::Bot::Auth::BotUser connections and everything
+    #
+    class ManagerClass
+
+      include Singleton
+
+      attr_reader :maskdb
+      attr_reader :everyone
+      attr_reader :botowner
+      attr_reader :bot
+
+      # The instance manages two <code>Hash</code>es: one that maps
+      # <code>Irc::User</code>s onto <code>BotUser</code>s, and the other that maps
+      # usernames onto <code>BotUser</code>
+      def initialize
+        @everyone = Auth::defaultbotuser
+        @botowner = Auth::botowner
+        bot_associate(nil)
+      end
+
+      def bot_associate(bot)
+        raise "Cannot associate with a new bot! Save first" if defined?(@has_changes) && @has_changes
+
+        reset_hashes
+
+        # Associated bot
+        @bot = bot
+
+        # This variable is set to true when there have been changes
+        # to the botusers list, so that we know when to save
+        @has_changes = false
+      end
+
+      def set_changed
+        @has_changes = true
+      end
+
+      def reset_changed
+        @has_changes = false
+      end
+
+      def changed?
+        @has_changes
+      end
+
+      # resets the hashes
+      def reset_hashes
+        @botusers = Hash.new
+        @maskdb = NetmaskDb.new
+        @allbotusers = Hash.new
+        [everyone, botowner].each do |x|
+          @allbotusers[x.username.to_sym] = x
+        end
+      end
+
+      def load_array(ary, forced)
+        unless ary
+          warning "Tried to load an empty array"
+          return
+        end
+        raise "Won't load with unsaved changes" if @has_changes and not forced
+        reset_hashes
+        ary.each { |x|
+          raise TypeError, "#{x} should be a Hash" unless x.kind_of?(Hash)
+          u = x[:username]
+          unless include?(u)
+            create_botuser(u)
+          end
+          get_botuser(u).from_hash(x)
+          get_botuser(u).transient = false
+        }
+        @has_changes=false
+      end
+
+      def save_array
+        @allbotusers.values.map { |x|
+          x.transient? ? nil : x.to_hash
+        }.compact
+      end
+
+      # checks if we know about a certain BotUser username
+      def include?(botusername)
+        @allbotusers.has_key?(botusername.to_sym)
+      end
+
+      # Maps <code>Irc::User</code> to BotUser
+      def irc_to_botuser(ircuser)
+        logged = @botusers[ircuser.to_irc_user]
+        return logged if logged
+        return autologin(ircuser)
+      end
+
+      # creates a new BotUser
+      def create_botuser(name, password=nil)
+        n = BotUser.sanitize_username(name)
+        k = n.to_sym
+        raise "botuser #{n} exists" if include?(k)
+        bu = BotUser.new(n)
+        bu.password = password
+        @allbotusers[k] = bu
+        return bu
+      end
+
+      # returns the botuser with name _name_
+      def get_botuser(name)
+        @allbotusers.fetch(BotUser.sanitize_username(name).to_sym)
+      end
+
+      # Logs Irc::User _user_ in to BotUser _botusername_ with password _pwd_
+      #
+      # raises an error if _botusername_ is not a known BotUser username
+      #
+      # It is possible to autologin by Netmask, on request
+      #
+      def login(user, botusername, pwd=nil)
+        ircuser = user.to_irc_user
+        n = BotUser.sanitize_username(botusername)
+        k = n.to_sym
+        raise "No such BotUser #{n}" unless include?(k)
+        if @botusers.has_key?(ircuser)
+          return true if @botusers[ircuser].username == n
+          # TODO
+          # @botusers[ircuser].logout(ircuser)
+        end
+        bu = @allbotusers[k]
+        if bu.login(ircuser, pwd)
+          @botusers[ircuser] = bu
+          return true
+        end
+        return false
+      end
+
+      # Tries to auto-login Irc::User _user_ by looking at the known botusers that allow autologin
+      # and trying to login without a password
+      #
+      def autologin(user)
+        ircuser = user.to_irc_user
+        debug "Trying to autologin #{ircuser}"
+        return @botusers[ircuser] if @botusers.has_key?(ircuser)
+        bu = maskdb.find(ircuser)
+        if bu
+          debug "trying #{bu}"
+          bu.login(ircuser) or raise '...what?!'
+          @botusers[ircuser] = bu
+          return bu
+        end
+        # Finally, create a transient if we're set to allow it
+        if @bot.config['auth.autouser']
+          bu = create_transient_botuser(ircuser)
+          @botusers[ircuser] = bu
+          return bu
+        end
+        return everyone
+      end
+
+      # Creates a new transient BotUser associated with Irc::User _user_,
+      # automatically logging him in. Note that transient botuser creation can
+      # fail, typically if we don't have the complete user netmask (e.g. for
+      # messages coming in from a linkbot)
+      #
+      def create_transient_botuser(user)
+        ircuser = user.to_irc_user
+        bu = everyone
+        begin
+          bu = BotUser.new(ircuser, :transient => true, :masks => ircuser)
+          bu.login(ircuser)
+        rescue
+          warning "failed to create transient for #{user}"
+          error $!
+        end
+        return bu
+      end
+
+      # Logs out any Irc::User matching Irc::Netmask _m_ and logged in
+      # to a transient BotUser
+      #
+      def logout_transients(m)
+        debug "to check: #{@botusers.keys.join ' '}"
+        @botusers.keys.each do |iu|
+          debug "checking #{iu.fullform} against #{m.fullform}"
+          bu = @botusers[iu]
+          bu.transient? or next
+          iu.matches?(m) or next
+          @botusers.delete(iu).autologin = false
+        end
+      end
+
+      # Makes transient BotUser _user_ into a permanent BotUser
+      # named _name_; if _user_ is an Irc::User, act on the transient
+      # BotUser (if any) it's logged in as
+      #
+      def make_permanent(user, name)
+        buname = BotUser.sanitize_username(name)
+        # TODO merge BotUser instead?
+        raise "there's already a BotUser called #{name}" if include?(buname)
+
+        tuser = nil
+        case user
+        when String, Irc::User
+          tuser = irc_to_botuser(user)
+        when BotUser
+          tuser = user
+        else
+          raise TypeError, "sorry, don't know how to make #{user.class} into a permanent BotUser"
+        end
+        return nil unless tuser
+        raise TypeError, "#{tuser} is not transient" unless tuser.transient?
+
+        tuser.make_permanent(buname)
+        @allbotusers[tuser.username.to_sym] = tuser
+
+        return tuser
+      end
+
+      # Checks if User _user_ can do _cmd_ on _chan_.
+      #
+      # Permission are checked in this order, until a true or false
+      # is returned:
+      # * associated BotUser on _chan_
+      # * associated BotUser on all channels
+      # * everyone on _chan_
+      # * everyone on all channels
+      #
+      def permit?(user, cmdtxt, channel=nil)
+        if user.class <= BotUser
+          botuser = user
+        else
+          botuser = irc_to_botuser(user)
+        end
+        cmd = cmdtxt.to_irc_auth_command
+
+        chan = channel
+        case chan
+        when User
+          chan = "?"
+        when Channel
+          chan = chan.name
+        end
+
+        allow = nil
+
+        allow = botuser.permit?(cmd, chan) if chan
+        return allow unless allow.nil?
+        allow = botuser.permit?(cmd)
+        return allow unless allow.nil?
+
+        unless botuser == everyone
+          allow = everyone.permit?(cmd, chan) if chan
+          return allow unless allow.nil?
+          allow = everyone.permit?(cmd)
+          return allow unless allow.nil?
+        end
+
+        raise "Could not check permission for user #{user.inspect} to run #{cmdtxt.inspect} on #{chan.inspect}"
+      end
+
+      # Checks if command _cmd_ is allowed to User _user_ on _chan_, optionally
+      # telling if the user is authorized
+      #
+      def allow?(cmdtxt, user, chan=nil)
+        if permit?(user, cmdtxt, chan)
+          return true
+        else
+          # cmds = cmdtxt.split('::')
+          # @bot.say chan, "you don't have #{cmds.last} (#{cmds.first}) permissions here" if chan
+          @bot.say chan, _("%{user}, you don't have '%{command}' permissions here") %
+                        {:user=>user, :command=>cmdtxt} if chan
+          return false
+        end
+      end
+
+    end
+
+    # Returns the only instance of ManagerClass
+    #
+    def Auth.manager
+      return ManagerClass.instance
+    end
+
+  end
+end
+
+  class User
+
+    # A convenience method to automatically found the botuser
+    # associated with the receiver
+    #
+    def botuser
+      Irc::Bot::Auth.manager.irc_to_botuser(self)
+    end
+  end
+
+end
diff --git a/lib/rbot/core/auth.rb b/lib/rbot/core/auth.rb
index b0aa12c1..d6167535 100644
--- a/lib/rbot/core/auth.rb
+++ b/lib/rbot/core/auth.rb
@@ -1,968 +1,968 @@
-#-- vim:sw=2:et

-#++

-#

-# :title: rbot auth management from IRC

-#

-# Author:: Giuseppe "Oblomov" Bilotta <giuseppe.bilotta@gmail.com>

-# Copyright:: (C) 2006,2007 Giuseppe Bilotta

-# License:: GPL v2

-

-class AuthModule < CoreBotModule

-

-  def initialize

-    super

-

-    # The namespace migration causes each Irc::Auth::PermissionSet to be

-    # unrecoverable, and we have to rename their class name to

-    # Irc::Bot::Auth::PermissionSet

-    @registry.recovery = Proc.new { |val|

-      patched = val.sub("o:\035Irc::Auth::PermissionSet", "o:\042Irc::Bot::Auth::PermissionSet")

-      Marshal.restore(patched)

-    }

-

-    load_array(:default, true)

-    debug "initialized auth. Botusers: #{@bot.auth.save_array.pretty_inspect}"

-  end

-

-  def save

-    save_array

-  end

-

-  def save_array(key=:default)

-    if @bot.auth.changed?

-      @registry[key] = @bot.auth.save_array

-      @bot.auth.reset_changed

-      debug "saved botusers (#{key}): #{@registry[key].pretty_inspect}"

-    end

-  end

-

-  def load_array(key=:default, forced=false)

-    debug "loading botusers (#{key}): #{@registry[key].pretty_inspect}"

-    @bot.auth.load_array(@registry[key], forced) if @registry.has_key?(key)

-  end

-

-  # The permission parameters accept arguments with the following syntax:

-  #   cmd_path... [on #chan .... | in here | in private]

-  # This auxiliary method scans the array _ar_ to see if it matches

-  # the given syntax: it expects + or - signs in front of _cmd_path_

-  # elements when _setting_ = true

-  #

-  # It returns an array whose first element is the array of cmd_path,

-  # the second element is an array of locations and third an array of

-  # warnings occurred while parsing the strings

-  #

-  def parse_args(ar, setting)

-    cmds = []

-    locs = []

-    warns = []

-    doing_cmds = true

-    next_must_be_chan = false

-    want_more = false

-    last_idx = 0

-    ar.each_with_index { |x, i|

-      if doing_cmds # parse cmd_path

-        # check if the list is done

-        if x == "on" or x == "in"

-          doing_cmds = false

-          next_must_be_chan = true if x == "on"

-          next

-        end

-        if "+-".include?(x[0])

-          warns << ArgumentError.new(_("please do not use + or - in front of command %{command} when resetting") % {:command => x}) unless setting

-        else

-          warns << ArgumentError.new(_("+ or - expected in front of %{string}") % {:string => x}) if setting

-        end

-        cmds << x

-      else # parse locations

-        if x[-1].chr == ','

-          want_more = true

-        else

-          want_more = false

-        end

-        case next_must_be_chan

-        when false

-          locs << x.gsub(/^here$/,'_').gsub(/^private$/,'?')

-        else

-          warns << ArgumentError.new(_("'%{string}' doesn't look like a channel name") % {:string => x}) unless @bot.server.supports[:chantypes].include?(x[0])

-          locs << x

-        end

-        unless want_more

-          last_idx = i

-          break

-        end

-      end

-    }

-    warns << _("trailing comma") if want_more

-    warns << _("you probably forgot a comma") unless last_idx == ar.length - 1

-    return cmds, locs, warns

-  end

-

-  def auth_edit_perm(m, params)

-

-    setting = m.message.split[1] == "set"

-    splits = params[:args]

-

-    has_for = splits[-2] == "for"

-    return usage(m) unless has_for

-

-    begin

-      user = @bot.auth.get_botuser(splits[-1].sub(/^all$/,"everyone"))

-    rescue

-      return m.reply(_("couldn't find botuser %{name}") % {:name => splits[-1]})

-    end

-    return m.reply(_("you can't change permissions for %{username}") % {:username => user.username}) if user.owner?

-    splits.slice!(-2,2) if has_for

-

-    cmds, locs, warns = parse_args(splits, setting)

-    errs = warns.select { |w| w.kind_of?(Exception) }

-

-    unless errs.empty?

-      m.reply _("couldn't satisfy your request: %{errors}") % {:errors => errs.join(',')}

-      return

-    end

-

-    if locs.empty?

-      locs << "*"

-    end

-    begin

-      locs.each { |loc|

-        ch = loc

-        if m.private?

-          ch = "?" if loc == "_"

-        else

-          ch = m.target.to_s if loc == "_"

-        end

-        cmds.each { |setval|

-          if setting

-            val = setval[0].chr == '+'

-            cmd = setval[1..-1]

-            user.set_permission(cmd, val, ch)

-          else

-            cmd = setval

-            user.reset_permission(cmd, ch)

-          end

-        }

-      }

-    rescue => e

-      m.reply "something went wrong while trying to set the permissions"

-      raise

-    end

-    @bot.auth.set_changed

-    debug "user #{user} permissions changed"

-    m.okay

-  end

-

-  def auth_view_perm(m, params)

-    begin

-      if params[:user].nil?

-        user = get_botusername_for(m.source)

-        return m.reply(_("you are owner, you can do anything")) if user.owner?

-      else

-        user = @bot.auth.get_botuser(params[:user].sub(/^all$/,"everyone"))

-        return m.reply(_("owner can do anything")) if user.owner?

-      end

-    rescue

-      return m.reply(_("couldn't find botuser %{name}") % {:name => params[:user]})

-    end

-    perm = user.perm

-    str = []

-    perm.each { |k, val|

-      next if val.perm.empty?

-      case k

-      when :*

-        str << _("on any channel: ")

-      when :"?"

-        str << _("in private: ")

-      else

-        str << _("on #{k}: ")

-      end

-      sub = []

-      val.perm.each { |cmd, bool|

-        sub << (bool ? "+" : "-")

-        sub.last << cmd.to_s

-      }

-      str.last << sub.join(', ')

-    }

-    if str.empty?

-      m.reply _("no permissions set for %{user}") % {:user => user.username}

-    else

-      m.reply _("permissions for %{user}:: %{permissions}") %

-              { :user => user.username, :permissions => str.join('; ')}

-    end

-  end

-

-  def auth_search_perm(m, p)

-    pattern = Regexp.new(p[:pattern].to_s)

-    results = @bot.plugins.maps.select { |k, v| k.match(pattern) }

-    count = results.length

-    max = @bot.config['send.max_lines']

-    extra = (count > max ? _(". only %{max} will be shown") : "") % { :max => max }

-    m.reply _("%{count} commands found matching %{pattern}%{extra}") % {

-      :count => count, :pattern => pattern, :extra => extra

-    }

-    return if count == 0

-    results[0,max].each { |cmd, hash|

-      m.reply _("%{cmd}: %{perms}") % {

-        :cmd => cmd,

-        :perms => hash[:auth].join(", ")

-      }

-    }

-  end

-

-  def get_botuser_for(user)

-    @bot.auth.irc_to_botuser(user)

-  end

-

-  def get_botusername_for(user)

-    get_botuser_for(user).username

-  end

-

-  def welcome(user)

-    _("welcome, %{user}") % {:user => get_botusername_for(user)}

-  end

-

-  def auth_auth(m, params)

-    params[:botuser] = 'owner'

-    auth_login(m,params)

-  end

-

-  def auth_login(m, params)

-    begin

-      case @bot.auth.login(m.source, params[:botuser], params[:password])

-      when true

-        m.reply welcome(m.source)

-        @bot.auth.set_changed

-      else

-        m.reply _("sorry, can't do")

-      end

-    rescue => e

-      m.reply _("couldn't login: %{exception}") % {:exception => e}

-      raise

-    end

-  end

-

-  def auth_autologin(m, params)

-    u = do_autologin(m.source)

-    if u.default?

-      m.reply _("I couldn't find anything to let you login automatically")

-    else

-      m.reply welcome(m.source)

-    end

-  end

-

-  def do_autologin(user)

-    @bot.auth.autologin(user)

-  end

-

-  def auth_whoami(m, params)

-    m.reply _("you are %{who}") % {

-      :who => get_botusername_for(m.source).gsub(

-                /^everyone$/, _("no one that I know")).gsub(

-                /^owner$/, _("my boss"))

-    }

-  end

-

-  def auth_whois(m, params)

-    return auth_whoami(m, params) if !m.public?

-    u = m.channel.users[params[:user]]

-

-    return m.reply("I don't see anyone named '#{params[:user]}' here") unless u

-

-    m.reply _("#{params[:user]} is %{who}") % {

-      :who => get_botusername_for(u).gsub(

-                /^everyone$/, _("no one that I know")).gsub(

-                /^owner$/, _("my boss"))

-    }

-  end

-

-  def help(cmd, topic="")

-    case cmd

-    when "login"

-      return _("login [<botuser>] [<pass>]: logs in to the bot as botuser <botuser> with password <pass>. When using the full form, you must contact the bot in private. <pass> can be omitted if <botuser> allows login-by-mask and your netmask is among the known ones. if <botuser> is omitted too autologin will be attempted")

-    when "whoami"

-      return _("whoami: names the botuser you're linked to")

-    when "who"

-      return _("who is <user>: names the botuser <user> is linked to")

-    when /^permission/

-      case topic

-      when "syntax"

-        return _("a permission is specified as module::path::to::cmd; when you want to enable it, prefix it with +; when you want to disable it, prefix it with -; when using the +reset+ command, do not use any prefix")

-      when "set", "reset", "[re]set", "(re)set"

-        return _("permissions [re]set <permission> [in <channel>] for <user>: sets or resets the permissions for botuser <user> in channel <channel> (use ? to change the permissions for private addressing)")

-      when "view"

-        return _("permissions view [for <user>]: display the permissions for user <user>")

-      when "searc"

-        return _("permissions search <pattern>: display the permissions associated with the commands matching <pattern>")

-      else

-        return _("permission topics: syntax, (re)set, view, search")

-      end

-    when "user"

-      case topic

-      when "show"

-        return _("user show <what> : shows info about the user; <what> can be any of autologin, login-by-mask, netmasks")

-      when /^(en|dis)able/

-        return _("user enable|disable <what> : turns on or off <what> (autologin, login-by-mask)")

-      when "set"

-        return _("user set password <blah> : sets the user password to <blah>; passwords can only contain upper and lowercase letters and numbers, and must be at least 4 characters long")

-      when "add", "rm"

-        return _("user add|rm netmask <mask> : adds/removes netmask <mask> from the list of netmasks known to the botuser you're linked to")

-      when "reset"

-        return _("user reset <what> : resets <what> to the default values. <what> can be +netmasks+ (the list will be emptied), +autologin+ or +login-by-mask+ (will be reset to the default value) or +password+ (a new one will be generated and you'll be told in private)")

-      when "tell"

-        return _("user tell <who> the password for <botuser> : contacts <who> in private to tell him/her the password for <botuser>")

-      when "create"

-        return _("user create <name> <password> : create botuser named <name> with password <password>. The password can be omitted, in which case a random one will be generated. The <name> should only contain alphanumeric characters and the underscore (_)")

-      when "list"

-        return _("user list : lists all the botusers")

-      when "destroy"

-        return _("user destroy <botuser> : destroys <botuser>. This function %{highlight}must%{highlight} be called in two steps. On the first call <botuser> is queued for destruction. On the second call, which must be in the form 'user confirm destroy <botuser>', the botuser will be destroyed. If you want to cancel the destruction, issue the command 'user cancel destroy <botuser>'") % {:highlight => Bold}

-      else

-        return _("user topics: show, enable|disable, add|rm netmask, set, reset, tell, create, list, destroy")

-      end

-    when "auth"

-      return _("auth <masterpassword>: log in as the bot owner; other commands: login, whoami, permission syntax, permissions [re]set, permissions view, user, meet, hello")

-    when "meet"

-      return _("meet <nick> [as <user>]: creates a bot user for nick, calling it user (defaults to the nick itself)")

-    when "hello"

-      return _("hello: creates a bot user for the person issuing the command")

-    else

-      return _("auth commands: auth, login, whoami, who, permission[s], user, meet, hello")

-    end

-  end

-

-  def need_args(cmd)

-    _("sorry, I need more arguments to %{command}") % {:command => cmd}

-  end

-

-  def not_args(cmd, *stuff)

-    _("I can only %{command} these: %{arguments}") %

-      {:command => cmd, :arguments => stuff.join(', ')}

-  end

-

-  def set_prop(botuser, prop, val)

-    k = prop.to_s.gsub("-","_")

-    botuser.send( (k + "=").to_sym, val)

-    if prop == :password and botuser == @bot.auth.botowner

-      @bot.config.items[:'auth.password'].set_string(@bot.auth.botowner.password)

-    end

-  end

-

-  def reset_prop(botuser, prop)

-    k = prop.to_s.gsub("-","_")

-    botuser.send( ("reset_"+k).to_sym)

-  end

-

-  def ask_bool_prop(botuser, prop)

-    k = prop.to_s.gsub("-","_")

-    botuser.send( (k + "?").to_sym)

-  end

-

-  def auth_manage_user(m, params)

-    splits = params[:data]

-

-    cmd = splits.first

-    return auth_whoami(m, params) if cmd.nil?

-

-    botuser = get_botuser_for(m.source)

-    # By default, we do stuff on the botuser the irc user is bound to

-    butarget = botuser

-

-    has_for = splits[-2] == "for"

-    if has_for

-      butarget = @bot.auth.get_botuser(splits[-1]) rescue nil

-      return m.reply(_("no such bot user %{user}") % {:user => splits[-1]}) unless butarget

-      splits.slice!(-2,2)

-    end

-    return m.reply(_("you can't mess with %{user}") % {:user => butarget.username}) if butarget.owner? && botuser != butarget

-

-    bools = [:autologin, :"login-by-mask"]

-    can_set = [:password]

-    can_addrm = [:netmasks]

-    can_reset = bools + can_set + can_addrm

-    can_show = can_reset + ["perms"]

-

-    begin

-    case cmd.to_sym

-

-    when :show

-      return m.reply(_("you can't see the properties of %{user}") %

-             {:user => butarget.username}) if botuser != butarget &&

-                                               !botuser.permit?("auth::show::other")

-

-      case splits[1]

-      when nil, "all"

-        props = can_reset

-      when "password"

-        if botuser != butarget

-          return m.reply(_("no way I'm telling you the master password!")) if butarget == @bot.auth.botowner

-          return m.reply(_("you can't ask for someone else's password"))

-        end

-        return m.reply(_("c'mon, you can't be asking me seriously to tell you the password in public!")) if m.public?

-        return m.reply(_("the password for %{user} is %{password}") %

-          { :user => butarget.username, :password => butarget.password })

-      else

-        props = splits[1..-1]

-      end

-

-      str = []

-

-      props.each { |arg|

-        k = arg.to_sym

-        next if k == :password

-        case k

-        when *bools

-          if ask_bool_prop(butarget, k)

-            str << _("can %{action}") % {:action => k}

-          else

-            str << _("can not %{action}") % {:action => k}

-          end

-        when :netmasks

-          if butarget.netmasks.empty?

-            str << _("knows no netmasks")

-          else

-            str << _("knows %{netmasks}") % {:netmasks => butarget.netmasks.join(", ")}

-          end

-        end

-      }

-      return m.reply("#{butarget.username} #{str.join('; ')}")

-

-    when :enable, :disable

-      return m.reply(_("you can't change the default user")) if butarget.default? && !botuser.permit?("auth::edit::other::default")

-      return m.reply(_("you can't edit %{user}") % {:user => butarget.username}) if butarget != botuser && !botuser.permit?("auth::edit::other")

-

-      return m.reply(need_args(cmd)) unless splits[1]

-      things = []

-      skipped = []

-      splits[1..-1].each { |a|

-        arg = a.to_sym

-        if bools.include?(arg)

-          set_prop(butarget, arg, cmd.to_sym == :enable)

-          things << a

-        else

-          skipped << a

-        end

-      }

-

-      m.reply(_("I ignored %{things} because %{reason}") % {

-                :things => skipped.join(', '),

-                :reason => not_args(cmd, *bools)}) unless skipped.empty?

-      if things.empty?

-        m.reply _("I haven't changed anything")

-      else

-        @bot.auth.set_changed

-        return auth_manage_user(m, {:data => ["show"] + things + ["for", butarget.username] })

-      end

-

-    when :set

-      return m.reply(_("you can't change the default user")) if

-             butarget.default? && !botuser.permit?("auth::edit::default")

-      return m.reply(_("you can't edit %{user}") % {:user=>butarget.username}) if

-             butarget != botuser && !botuser.permit?("auth::edit::other")

-

-      return m.reply(need_args(cmd)) unless splits[1]

-      arg = splits[1].to_sym

-      return m.reply(not_args(cmd, *can_set)) unless can_set.include?(arg)

-      argarg = splits[2]

-      return m.reply(need_args([cmd, splits[1]].join(" "))) unless argarg

-      if arg == :password && m.public?

-        return m.reply(_("is that a joke? setting the password in public?"))

-      end

-      set_prop(butarget, arg, argarg)

-      @bot.auth.set_changed

-      auth_manage_user(m, {:data => ["show", arg.to_s, "for", butarget.username] })

-

-    when :reset

-      return m.reply(_("you can't change the default user")) if

-             butarget.default? && !botuser.permit?("auth::edit::default")

-      return m.reply(_("you can't edit %{user}") % {:user=>butarget.username}) if

-             butarget != botuser && !botuser.permit?("auth::edit::other")

-

-      return m.reply(need_args(cmd)) unless splits[1]

-      things = []

-      skipped = []

-      splits[1..-1].each { |a|

-        arg = a.to_sym

-        if can_reset.include?(arg)

-          reset_prop(butarget, arg)

-          things << a

-        else

-          skipped << a

-        end

-      }

-

-      m.reply(_("I ignored %{things} because %{reason}") %

-                { :things => skipped.join(', '),

-                  :reason => not_args(cmd, *can_reset)}) unless skipped.empty?

-      if things.empty?

-        m.reply _("I haven't changed anything")

-      else

-        @bot.auth.set_changed

-        @bot.say(m.source, _("the password for %{user} is now %{password}") %

-          {:user => butarget.username, :password => butarget.password}) if

-          things.include?("password")

-        return auth_manage_user(m, {:data => (["show"] + things - ["password"]) + ["for", butarget.username]})

-      end

-

-    when :add, :rm, :remove, :del, :delete

-      return m.reply(_("you can't change the default user")) if

-             butarget.default? && !botuser.permit?("auth::edit::default")

-      return m.reply(_("you can't edit %{user}") % {:user => butarget.username}) if

-             butarget != botuser && !botuser.permit?("auth::edit::other")

-

-      arg = splits[1]

-      if arg.nil? or arg !~ /netmasks?/ or splits[2].nil?

-        return m.reply(_("I can only add/remove netmasks. See +help user add+ for more instructions"))

-      end

-

-      method = cmd.to_sym == :add ? :add_netmask : :delete_netmask

-

-      failed = []

-

-      splits[2..-1].each { |mask|

-        begin

-          butarget.send(method, mask.to_irc_netmask(:server => @bot.server))

-        rescue => e

-          debug "failed with #{e.message}"

-          debug e.backtrace.join("\n")

-          failed << mask

-        end

-      }

-      m.reply "I failed to #{cmd} #{failed.join(', ')}" unless failed.empty?

-      @bot.auth.set_changed

-      return auth_manage_user(m, {:data => ["show", "netmasks", "for", butarget.username] })

-

-    else

-      m.reply _("sorry, I don't know how to %{request}") % {:request => m.message}

-    end

-    rescue => e

-      m.reply _("couldn't %{cmd}: %{exception}") % {:cmd => cmd, :exception => e}

-    end

-  end

-

-  def auth_meet(m, params)

-    nick = params[:nick]

-    if !nick

-      # we are actually responding to a 'hello' command

-      unless m.botuser.transient?

-        m.reply @bot.lang.get('hello_X') % m.botuser

-        return

-      end

-      nick = m.sourcenick

-      irc_user = m.source

-    else

-      # m.channel is always an Irc::Channel because the command is either

-      # public-only 'meet' or private/public 'hello' which was handled by

-      # the !nick case, so this shouldn't fail

-      irc_user = m.channel.users[nick]

-      return m.reply("I don't see anyone named '#{nick}' here") unless irc_user

-    end

-    # BotUser name

-    buname = params[:user] || nick

-    begin

-      call_event(:botuser,:pre_perm, {:irc_user => irc_user, :bot_user => buname})

-      met = @bot.auth.make_permanent(irc_user, buname)

-      @bot.auth.set_changed

-      call_event(:botuser,:post_perm, {:irc_user => irc_user, :bot_user => buname})

-      m.reply @bot.lang.get('hello_X') % met

-      @bot.say nick, _("you are now registered as %{buname}. I created a random password for you : %{pass} and you can change it at any time by telling me 'user set password <password>' in private" % {

-        :buname => buname,

-        :pass => met.password

-      })

-    rescue RuntimeError

-      # or can this happen for other cases too?

-      # TODO autologin if forced

-      m.reply _("but I already know %{buname}" % {:buname => buname})

-    rescue => e

-      m.reply _("I had problems meeting %{nick}: %{e}" % { :nick => nick, :e => e })

-    end

-  end

-

-  def auth_tell_password(m, params)

-    user = params[:user]

-    begin

-      botuser = @bot.auth.get_botuser(params[:botuser])

-    rescue

-      return m.reply(_("couldn't find botuser %{user}") % {:user => params[:botuser]})

-    end

-    m.reply(_("I'm not telling the master password to anyway, pal")) if botuser == @bot.auth.botowner

-    msg = _("the password for botuser %{user} is %{password}") %

-          {:user => botuser.username, :password => botuser.password}

-    @bot.say user, msg

-    @bot.say m.source, _("I told %{user} that %{message}") % {:user => user, :message => msg}

-  end

-

-  def auth_create_user(m, params)

-    name = params[:name]

-    password = params[:password]

-    return m.reply(_("are you nuts, creating a botuser with a publicly known password?")) if m.public? and not password.nil?

-    begin

-      bu = @bot.auth.create_botuser(name, password)

-      @bot.auth.set_changed

-    rescue => e

-      m.reply(_("failed to create %{user}: %{exception}") % {:user => name,  :exception => e})

-      debug e.inspect + "\n" + e.backtrace.join("\n")

-      return

-    end

-    m.reply(_("created botuser %{user}") % {:user => bu.username})

-  end

-

-  def auth_list_users(m, params)

-    # TODO name regexp to filter results

-    list = @bot.auth.save_array.inject([]) { |list, x| ['everyone', 'owner'].include?(x[:username]) ? list : list << x[:username] }

-    if defined?(@destroy_q)

-      list.map! { |x|

-        @destroy_q.include?(x) ? x + _(" (queued for destruction)") : x

-      }

-    end

-    return m.reply(_("I have no botusers other than the default ones")) if list.empty?

-    return m.reply(n_("botuser: %{list}", "botusers: %{list}", list.length) %

-                   {:list => list.join(', ')})

-  end

-

-  def auth_destroy_user(m, params)

-    @destroy_q = [] unless defined?(@destroy_q)

-    buname = params[:name]

-    return m.reply(_("You can't destroy %{user}") % {:user => buname}) if

-           ["everyone", "owner"].include?(buname)

-    mod = params[:modifier].to_sym rescue nil

-

-    buser_array = @bot.auth.save_array

-    buser_hash = buser_array.inject({}) { |h, u|

-      h[u[:username]] = u

-      h

-    }

-

-    return m.reply(_("no such botuser %{user}") % {:user=>buname}) unless

-           buser_hash.keys.include?(buname)

-

-    case mod

-    when :cancel

-      if @destroy_q.include?(buname)

-        @destroy_q.delete(buname)

-        m.reply(_("%{user} removed from the destruction queue") % {:user=>buname})

-      else

-        m.reply(_("%{user} was not queued for destruction") % {:user=>buname})

-      end

-      return

-    when nil

-      if @destroy_q.include?(buname)

-        return m.reply(_("%{user} already queued for destruction, use %{highlight}user confirm destroy %{user}%{highlight} to destroy it") % {:user=>buname, :highlight=>Bold})

-      else

-        @destroy_q << buname

-        return m.reply(_("%{user} queued for destruction, use %{highlight}user confirm destroy %{user}%{highlight} to destroy it") % {:user=>buname, :highlight=>Bold})

-      end

-    when :confirm

-      begin

-        return m.reply(_("%{user} is not queued for destruction yet") %

-               {:user=>buname}) unless @destroy_q.include?(buname)

-        buser_array.delete_if { |u|

-          u[:username] == buname

-        }

-        @destroy_q.delete(buname)

-        @bot.auth.load_array(buser_array, true)

-        @bot.auth.set_changed

-      rescue => e

-        return m.reply(_("failed: %{exception}") % {:exception => e})

-      end

-      return m.reply(_("botuser %{user} destroyed") % {:user => buname})

-    end

-  end

-

-  def auth_copy_ren_user(m, params)

-    source = Auth::BotUser.sanitize_username(params[:source])

-    dest = Auth::BotUser.sanitize_username(params[:dest])

-    return m.reply(_("please don't touch the default users")) unless

-      (["everyone", "owner"] & [source, dest]).empty?

-

-    buser_array = @bot.auth.save_array

-    buser_hash = buser_array.inject({}) { |h, u|

-      h[u[:username]] = u

-      h

-    }

-

-    return m.reply(_("no such botuser %{source}") % {:source=>source}) unless

-           buser_hash.keys.include?(source)

-    return m.reply(_("botuser %{dest} exists already") % {:dest=>dest}) if

-           buser_hash.keys.include?(dest)

-

-    copying = m.message.split[1] == "copy"

-    begin

-      if copying

-        h = {}

-        buser_hash[source].each { |k, val|

-          h[k] = val.dup

-        }

-      else

-        h = buser_hash[source]

-      end

-      h[:username] = dest

-      buser_array << h if copying

-

-      @bot.auth.load_array(buser_array, true)

-      @bot.auth.set_changed

-      call_event(:botuser, copying ? :copy : :rename, :source => source, :dest => dest)

-    rescue => e

-      return m.reply(_("failed: %{exception}") % {:exception=>e})

-    end

-    if copying

-      m.reply(_("botuser %{source} copied to %{dest}") %

-           {:source=>source, :dest=>dest})

-    else

-      m.reply(_("botuser %{source} renamed to %{dest}") %

-           {:source=>source, :dest=>dest})

-    end

-

-  end

-

-  def auth_export(m, params)

-

-    exportfile = "#{@bot.botclass}/new-auth.users"

-

-    what = params[:things]

-

-    has_to = what[-2] == "to"

-    if has_to

-      exportfile = "#{@bot.botclass}/#{what[-1]}"

-      what.slice!(-2,2)

-    end

-

-    what.delete("all")

-

-    m.reply _("selecting data to export ...")

-

-    buser_array = @bot.auth.save_array

-    buser_hash = buser_array.inject({}) { |h, u|

-      h[u[:username]] = u

-      h

-    }

-

-    if what.empty?

-      we_want = buser_hash

-    else

-      we_want = buser_hash.delete_if { |key, val|

-        not what.include?(key)

-      }

-    end

-

-    m.reply _("preparing data for export ...")

-    begin

-      yaml_hash = {}

-      we_want.each { |k, val|

-        yaml_hash[k] = {}

-        val.each { |kk, v|

-          case kk

-          when :username

-            next

-          when :netmasks

-            yaml_hash[k][kk] = []

-            v.each { |nm|

-              yaml_hash[k][kk] << {

-                :fullform => nm.fullform,

-                :casemap => nm.casemap.to_s

-              }

-            }

-          else

-            yaml_hash[k][kk] = v

-          end

-        }

-      }

-    rescue => e

-      m.reply _("failed to prepare data: %{exception}") % {:exception=>e}

-      debug e.backtrace.dup.unshift(e.inspect).join("\n")

-      return

-    end

-

-    m.reply _("exporting to %{file} ...") % {:file=>exportfile}

-    begin

-      # m.reply yaml_hash.inspect

-      File.open(exportfile, "w") do |file|

-        file.puts YAML::dump(yaml_hash)

-      end

-    rescue => e

-      m.reply _("failed to export users: %{exception}") % {:exception=>e}

-      debug e.backtrace.dup.unshift(e.inspect).join("\n")

-      return

-    end

-    m.reply _("done")

-  end

-

-  def auth_import(m, params)

-

-    importfile = "#{@bot.botclass}/new-auth.users"

-

-    what = params[:things]

-

-    has_from = what[-2] == "from"

-    if has_from

-      importfile = "#{@bot.botclass}/#{what[-1]}"

-      what.slice!(-2,2)

-    end

-

-    what.delete("all")

-

-    m.reply _("reading %{file} ...") % {:file=>importfile}

-    begin

-      yaml_hash = YAML::load_file(importfile)

-    rescue => e

-      m.reply _("failed to import from: %{exception}") % {:exception=>e}

-      debug e.backtrace.dup.unshift(e.inspect).join("\n")

-      return

-    end

-

-    # m.reply yaml_hash.inspect

-

-    m.reply _("selecting data to import ...")

-

-    if what.empty?

-      we_want = yaml_hash

-    else

-      we_want = yaml_hash.delete_if { |key, val|

-        not what.include?(key)

-      }

-    end

-

-    m.reply _("parsing data from import ...")

-

-    buser_hash = {}

-

-    begin

-      yaml_hash.each { |k, val|

-        buser_hash[k] = { :username => k }

-        val.each { |kk, v|

-          case kk

-          when :netmasks

-            buser_hash[k][kk] = []

-            v.each { |nm|

-              buser_hash[k][kk] << nm[:fullform].to_irc_netmask(:casemap => nm[:casemap].to_irc_casemap).to_irc_netmask(:server => @bot.server)

-            }

-          else

-            buser_hash[k][kk] = v

-          end

-        }

-      }

-    rescue => e

-      m.reply _("failed to parse data: %{exception}") % {:exception=>e}

-      debug e.backtrace.dup.unshift(e.inspect).join("\n")

-      return

-    end

-

-    # m.reply buser_hash.inspect

-

-    org_buser_array = @bot.auth.save_array

-    org_buser_hash = org_buser_array.inject({}) { |h, u|

-      h[u[:username]] = u

-      h

-    }

-

-    # TODO we may want to do a(n optional) key-by-key merge

-    #

-    org_buser_hash.merge!(buser_hash)

-    new_buser_array = org_buser_hash.values

-    @bot.auth.load_array(new_buser_array, true)

-    @bot.auth.set_changed

-

-    m.reply _("done")

-  end

-

-end

-

-auth = AuthModule.new

-

-auth.map "user export *things",

-  :action => 'auth_export',

-  :defaults => { :things => ['all'] },

-  :auth_path => ':manage:fedex:'

-

-auth.map "user import *things",

- :action => 'auth_import',

- :auth_path => ':manage:fedex:'

-

-auth.map "user create :name :password",

-  :action => 'auth_create_user',

-  :defaults => {:password => nil},

-  :auth_path => ':manage:'

-

-auth.map "user [:modifier] destroy :name",

-  :action => 'auth_destroy_user',

-  :requirements => { :modifier => /^(cancel|confirm)?$/ },

-  :defaults => { :modifier => '' },

-  :auth_path => ':manage::destroy!'

-

-auth.map "user copy :source [to] :dest",

-  :action => 'auth_copy_ren_user',

-  :auth_path => ':manage:'

-

-auth.map "user rename :source [to] :dest",

-  :action => 'auth_copy_ren_user',

-  :auth_path => ':manage:'

-

-auth.map "meet :nick [as :user]",

-  :action => 'auth_meet',

-  :auth_path => 'user::manage', :private => false

-

-auth.map "hello",

-  :action => 'auth_meet',

-  :auth_path => 'user::manage::meet'

-

-auth.default_auth("user::manage", false)

-auth.default_auth("user::manage::meet::hello", true)

-

-auth.map "user tell :user the password for :botuser",

-  :action => 'auth_tell_password',

-  :auth_path => ':manage:'

-

-auth.map "user list",

-  :action => 'auth_list_users',

-  :auth_path => '::'

-

-auth.map "user *data",

-  :action => 'auth_manage_user'

-

-auth.default_auth("user", true)

-auth.default_auth("edit::other", false)

-

-auth.map "whoami",

-  :action => 'auth_whoami',

-  :auth_path => '!*!'

-

-auth.map "who is :user",

-  :action => 'auth_whois',

-  :auth_path => '!*!'

-

-auth.map "auth :password",

-  :action => 'auth_auth',

-  :public => false,

-  :auth_path => '!login!'

-

-auth.map "login :botuser :password",

-  :action => 'auth_login',

-  :public => false,

-  :defaults => { :password => nil },

-  :auth_path => '!login!'

-

-auth.map "login :botuser",

-  :action => 'auth_login',

-  :auth_path => '!login!'

-

-auth.map "login",

-  :action => 'auth_autologin',

-  :auth_path => '!login!'

-

-auth.map "permissions set *args",

-  :action => 'auth_edit_perm',

-  :auth_path => ':edit::set:'

-

-auth.map "permissions reset *args",

-  :action => 'auth_edit_perm',

-  :auth_path => ':edit::set:'

-

-auth.map "permissions view [for :user]",

-  :action => 'auth_view_perm',

-  :auth_path => '::'

-

-auth.map "permissions search *pattern",

-  :action => 'auth_search_perm',

-  :auth_path => '::'

-

-auth.default_auth('*', false)

-

+#-- vim:sw=2:et
+#++
+#
+# :title: rbot auth management from IRC
+#
+# Author:: Giuseppe "Oblomov" Bilotta <giuseppe.bilotta@gmail.com>
+# Copyright:: (C) 2006,2007 Giuseppe Bilotta
+# License:: GPL v2
+
+class AuthModule < CoreBotModule
+
+  def initialize
+    super
+
+    # The namespace migration causes each Irc::Auth::PermissionSet to be
+    # unrecoverable, and we have to rename their class name to
+    # Irc::Bot::Auth::PermissionSet
+    @registry.recovery = Proc.new { |val|
+      patched = val.sub("o:\035Irc::Auth::PermissionSet", "o:\042Irc::Bot::Auth::PermissionSet")
+      Marshal.restore(patched)
+    }
+
+    load_array(:default, true)
+    debug "initialized auth. Botusers: #{@bot.auth.save_array.pretty_inspect}"
+  end
+
+  def save
+    save_array
+  end
+
+  def save_array(key=:default)
+    if @bot.auth.changed?
+      @registry[key] = @bot.auth.save_array
+      @bot.auth.reset_changed
+      debug "saved botusers (#{key}): #{@registry[key].pretty_inspect}"
+    end
+  end
+
+  def load_array(key=:default, forced=false)
+    debug "loading botusers (#{key}): #{@registry[key].pretty_inspect}"
+    @bot.auth.load_array(@registry[key], forced) if @registry.has_key?(key)
+  end
+
+  # The permission parameters accept arguments with the following syntax:
+  #   cmd_path... [on #chan .... | in here | in private]
+  # This auxiliary method scans the array _ar_ to see if it matches
+  # the given syntax: it expects + or - signs in front of _cmd_path_
+  # elements when _setting_ = true
+  #
+  # It returns an array whose first element is the array of cmd_path,
+  # the second element is an array of locations and third an array of
+  # warnings occurred while parsing the strings
+  #
+  def parse_args(ar, setting)
+    cmds = []
+    locs = []
+    warns = []
+    doing_cmds = true
+    next_must_be_chan = false
+    want_more = false
+    last_idx = 0
+    ar.each_with_index { |x, i|
+      if doing_cmds # parse cmd_path
+        # check if the list is done
+        if x == "on" or x == "in"
+          doing_cmds = false
+          next_must_be_chan = true if x == "on"
+          next
+        end
+        if "+-".include?(x[0])
+          warns << ArgumentError.new(_("please do not use + or - in front of command %{command} when resetting") % {:command => x}) unless setting
+        else
+          warns << ArgumentError.new(_("+ or - expected in front of %{string}") % {:string => x}) if setting
+        end
+        cmds << x
+      else # parse locations
+        if x[-1].chr == ','
+          want_more = true
+        else
+          want_more = false
+        end
+        case next_must_be_chan
+        when false
+          locs << x.gsub(/^here$/,'_').gsub(/^private$/,'?')
+        else
+          warns << ArgumentError.new(_("'%{string}' doesn't look like a channel name") % {:string => x}) unless @bot.server.supports[:chantypes].include?(x[0])
+          locs << x
+        end
+        unless want_more
+          last_idx = i
+          break
+        end
+      end
+    }
+    warns << _("trailing comma") if want_more
+    warns << _("you probably forgot a comma") unless last_idx == ar.length - 1
+    return cmds, locs, warns
+  end
+
+  def auth_edit_perm(m, params)
+
+    setting = m.message.split[1] == "set"
+    splits = params[:args]
+
+    has_for = splits[-2] == "for"
+    return usage(m) unless has_for
+
+    begin
+      user = @bot.auth.get_botuser(splits[-1].sub(/^all$/,"everyone"))
+    rescue
+      return m.reply(_("couldn't find botuser %{name}") % {:name => splits[-1]})
+    end
+    return m.reply(_("you can't change permissions for %{username}") % {:username => user.username}) if user.owner?
+    splits.slice!(-2,2) if has_for
+
+    cmds, locs, warns = parse_args(splits, setting)
+    errs = warns.select { |w| w.kind_of?(Exception) }
+
+    unless errs.empty?
+      m.reply _("couldn't satisfy your request: %{errors}") % {:errors => errs.join(',')}
+      return
+    end
+
+    if locs.empty?
+      locs << "*"
+    end
+    begin
+      locs.each { |loc|
+        ch = loc
+        if m.private?
+          ch = "?" if loc == "_"
+        else
+          ch = m.target.to_s if loc == "_"
+        end
+        cmds.each { |setval|
+          if setting
+            val = setval[0].chr == '+'
+            cmd = setval[1..-1]
+            user.set_permission(cmd, val, ch)
+          else
+            cmd = setval
+            user.reset_permission(cmd, ch)
+          end
+        }
+      }
+    rescue => e
+      m.reply "something went wrong while trying to set the permissions"
+      raise
+    end
+    @bot.auth.set_changed
+    debug "user #{user} permissions changed"
+    m.okay
+  end
+
+  def auth_view_perm(m, params)
+    begin
+      if params[:user].nil?
+        user = get_botusername_for(m.source)
+        return m.reply(_("you are owner, you can do anything")) if user.owner?
+      else
+        user = @bot.auth.get_botuser(params[:user].sub(/^all$/,"everyone"))
+        return m.reply(_("owner can do anything")) if user.owner?
+      end
+    rescue
+      return m.reply(_("couldn't find botuser %{name}") % {:name => params[:user]})
+    end
+    perm = user.perm
+    str = []
+    perm.each { |k, val|
+      next if val.perm.empty?
+      case k
+      when :*
+        str << _("on any channel: ")
+      when :"?"
+        str << _("in private: ")
+      else
+        str << _("on #{k}: ")
+      end
+      sub = []
+      val.perm.each { |cmd, bool|
+        sub << (bool ? "+" : "-")
+        sub.last << cmd.to_s
+      }
+      str.last << sub.join(', ')
+    }
+    if str.empty?
+      m.reply _("no permissions set for %{user}") % {:user => user.username}
+    else
+      m.reply _("permissions for %{user}:: %{permissions}") %
+              { :user => user.username, :permissions => str.join('; ')}
+    end
+  end
+
+  def auth_search_perm(m, p)
+    pattern = Regexp.new(p[:pattern].to_s)
+    results = @bot.plugins.maps.select { |k, v| k.match(pattern) }
+    count = results.length
+    max = @bot.config['send.max_lines']
+    extra = (count > max ? _(". only %{max} will be shown") : "") % { :max => max }
+    m.reply _("%{count} commands found matching %{pattern}%{extra}") % {
+      :count => count, :pattern => pattern, :extra => extra
+    }
+    return if count == 0
+    results[0,max].each { |cmd, hash|
+      m.reply _("%{cmd}: %{perms}") % {
+        :cmd => cmd,
+        :perms => hash[:auth].join(", ")
+      }
+    }
+  end
+
+  def get_botuser_for(user)
+    @bot.auth.irc_to_botuser(user)
+  end
+
+  def get_botusername_for(user)
+    get_botuser_for(user).username
+  end
+
+  def welcome(user)
+    _("welcome, %{user}") % {:user => get_botusername_for(user)}
+  end
+
+  def auth_auth(m, params)
+    params[:botuser] = 'owner'
+    auth_login(m,params)
+  end
+
+  def auth_login(m, params)
+    begin
+      case @bot.auth.login(m.source, params[:botuser], params[:password])
+      when true
+        m.reply welcome(m.source)
+        @bot.auth.set_changed
+      else
+        m.reply _("sorry, can't do")
+      end
+    rescue => e
+      m.reply _("couldn't login: %{exception}") % {:exception => e}
+      raise
+    end
+  end
+
+  def auth_autologin(m, params)
+    u = do_autologin(m.source)
+    if u.default?
+      m.reply _("I couldn't find anything to let you login automatically")
+    else
+      m.reply welcome(m.source)
+    end
+  end
+
+  def do_autologin(user)
+    @bot.auth.autologin(user)
+  end
+
+  def auth_whoami(m, params)
+    m.reply _("you are %{who}") % {
+      :who => get_botusername_for(m.source).gsub(
+                /^everyone$/, _("no one that I know")).gsub(
+                /^owner$/, _("my boss"))
+    }
+  end
+
+  def auth_whois(m, params)
+    return auth_whoami(m, params) if !m.public?
+    u = m.channel.users[params[:user]]
+
+    return m.reply("I don't see anyone named '#{params[:user]}' here") unless u
+
+    m.reply _("#{params[:user]} is %{who}") % {
+      :who => get_botusername_for(u).gsub(
+                /^everyone$/, _("no one that I know")).gsub(
+                /^owner$/, _("my boss"))
+    }
+  end
+
+  def help(cmd, topic="")
+    case cmd
+    when "login"
+      return _("login [<botuser>] [<pass>]: logs in to the bot as botuser <botuser> with password <pass>. When using the full form, you must contact the bot in private. <pass> can be omitted if <botuser> allows login-by-mask and your netmask is among the known ones. if <botuser> is omitted too autologin will be attempted")
+    when "whoami"
+      return _("whoami: names the botuser you're linked to")
+    when "who"
+      return _("who is <user>: names the botuser <user> is linked to")
+    when /^permission/
+      case topic
+      when "syntax"
+        return _("a permission is specified as module::path::to::cmd; when you want to enable it, prefix it with +; when you want to disable it, prefix it with -; when using the +reset+ command, do not use any prefix")
+      when "set", "reset", "[re]set", "(re)set"
+        return _("permissions [re]set <permission> [in <channel>] for <user>: sets or resets the permissions for botuser <user> in channel <channel> (use ? to change the permissions for private addressing)")
+      when "view"
+        return _("permissions view [for <user>]: display the permissions for user <user>")
+      when "searc"
+        return _("permissions search <pattern>: display the permissions associated with the commands matching <pattern>")
+      else
+        return _("permission topics: syntax, (re)set, view, search")
+      end
+    when "user"
+      case topic
+      when "show"
+        return _("user show <what> : shows info about the user; <what> can be any of autologin, login-by-mask, netmasks")
+      when /^(en|dis)able/
+        return _("user enable|disable <what> : turns on or off <what> (autologin, login-by-mask)")
+      when "set"
+        return _("user set password <blah> : sets the user password to <blah>; passwords can only contain upper and lowercase letters and numbers, and must be at least 4 characters long")
+      when "add", "rm"
+        return _("user add|rm netmask <mask> : adds/removes netmask <mask> from the list of netmasks known to the botuser you're linked to")
+      when "reset"
+        return _("user reset <what> : resets <what> to the default values. <what> can be +netmasks+ (the list will be emptied), +autologin+ or +login-by-mask+ (will be reset to the default value) or +password+ (a new one will be generated and you'll be told in private)")
+      when "tell"
+        return _("user tell <who> the password for <botuser> : contacts <who> in private to tell him/her the password for <botuser>")
+      when "create"
+        return _("user create <name> <password> : create botuser named <name> with password <password>. The password can be omitted, in which case a random one will be generated. The <name> should only contain alphanumeric characters and the underscore (_)")
+      when "list"
+        return _("user list : lists all the botusers")
+      when "destroy"
+        return _("user destroy <botuser> : destroys <botuser>. This function %{highlight}must%{highlight} be called in two steps. On the first call <botuser> is queued for destruction. On the second call, which must be in the form 'user confirm destroy <botuser>', the botuser will be destroyed. If you want to cancel the destruction, issue the command 'user cancel destroy <botuser>'") % {:highlight => Bold}
+      else
+        return _("user topics: show, enable|disable, add|rm netmask, set, reset, tell, create, list, destroy")
+      end
+    when "auth"
+      return _("auth <masterpassword>: log in as the bot owner; other commands: login, whoami, permission syntax, permissions [re]set, permissions view, user, meet, hello")
+    when "meet"
+      return _("meet <nick> [as <user>]: creates a bot user for nick, calling it user (defaults to the nick itself)")
+    when "hello"
+      return _("hello: creates a bot user for the person issuing the command")
+    else
+      return _("auth commands: auth, login, whoami, who, permission[s], user, meet, hello")
+    end
+  end
+
+  def need_args(cmd)
+    _("sorry, I need more arguments to %{command}") % {:command => cmd}
+  end
+
+  def not_args(cmd, *stuff)
+    _("I can only %{command} these: %{arguments}") %
+      {:command => cmd, :arguments => stuff.join(', ')}
+  end
+
+  def set_prop(botuser, prop, val)
+    k = prop.to_s.gsub("-","_")
+    botuser.send( (k + "=").to_sym, val)
+    if prop == :password and botuser == @bot.auth.botowner
+      @bot.config.items[:'auth.password'].set_string(@bot.auth.botowner.password)
+    end
+  end
+
+  def reset_prop(botuser, prop)
+    k = prop.to_s.gsub("-","_")
+    botuser.send( ("reset_"+k).to_sym)
+  end
+
+  def ask_bool_prop(botuser, prop)
+    k = prop.to_s.gsub("-","_")
+    botuser.send( (k + "?").to_sym)
+  end
+
+  def auth_manage_user(m, params)
+    splits = params[:data]
+
+    cmd = splits.first
+    return auth_whoami(m, params) if cmd.nil?
+
+    botuser = get_botuser_for(m.source)
+    # By default, we do stuff on the botuser the irc user is bound to
+    butarget = botuser
+
+    has_for = splits[-2] == "for"
+    if has_for
+      butarget = @bot.auth.get_botuser(splits[-1]) rescue nil
+      return m.reply(_("no such bot user %{user}") % {:user => splits[-1]}) unless butarget
+      splits.slice!(-2,2)
+    end
+    return m.reply(_("you can't mess with %{user}") % {:user => butarget.username}) if butarget.owner? && botuser != butarget
+
+    bools = [:autologin, :"login-by-mask"]
+    can_set = [:password]
+    can_addrm = [:netmasks]
+    can_reset = bools + can_set + can_addrm
+    can_show = can_reset + ["perms"]
+
+    begin
+    case cmd.to_sym
+
+    when :show
+      return m.reply(_("you can't see the properties of %{user}") %
+             {:user => butarget.username}) if botuser != butarget &&
+                                               !botuser.permit?("auth::show::other")
+
+      case splits[1]
+      when nil, "all"
+        props = can_reset
+      when "password"
+        if botuser != butarget
+          return m.reply(_("no way I'm telling you the master password!")) if butarget == @bot.auth.botowner
+          return m.reply(_("you can't ask for someone else's password"))
+        end
+        return m.reply(_("c'mon, you can't be asking me seriously to tell you the password in public!")) if m.public?
+        return m.reply(_("the password for %{user} is %{password}") %
+          { :user => butarget.username, :password => butarget.password })
+      else
+        props = splits[1..-1]
+      end
+
+      str = []
+
+      props.each { |arg|
+        k = arg.to_sym
+        next if k == :password
+        case k
+        when *bools
+          if ask_bool_prop(butarget, k)
+            str << _("can %{action}") % {:action => k}
+          else
+            str << _("can not %{action}") % {:action => k}
+          end
+        when :netmasks
+          if butarget.netmasks.empty?
+            str << _("knows no netmasks")
+          else
+            str << _("knows %{netmasks}") % {:netmasks => butarget.netmasks.join(", ")}
+          end
+        end
+      }
+      return m.reply("#{butarget.username} #{str.join('; ')}")
+
+    when :enable, :disable
+      return m.reply(_("you can't change the default user")) if butarget.default? && !botuser.permit?("auth::edit::other::default")
+      return m.reply(_("you can't edit %{user}") % {:user => butarget.username}) if butarget != botuser && !botuser.permit?("auth::edit::other")
+
+      return m.reply(need_args(cmd)) unless splits[1]
+      things = []
+      skipped = []
+      splits[1..-1].each { |a|
+        arg = a.to_sym
+        if bools.include?(arg)
+          set_prop(butarget, arg, cmd.to_sym == :enable)
+          things << a
+        else
+          skipped << a
+        end
+      }
+
+      m.reply(_("I ignored %{things} because %{reason}") % {
+                :things => skipped.join(', '),
+                :reason => not_args(cmd, *bools)}) unless skipped.empty?
+      if things.empty?
+        m.reply _("I haven't changed anything")
+      else
+        @bot.auth.set_changed
+        return auth_manage_user(m, {:data => ["show"] + things + ["for", butarget.username] })
+      end
+
+    when :set
+      return m.reply(_("you can't change the default user")) if
+             butarget.default? && !botuser.permit?("auth::edit::default")
+      return m.reply(_("you can't edit %{user}") % {:user=>butarget.username}) if
+             butarget != botuser && !botuser.permit?("auth::edit::other")
+
+      return m.reply(need_args(cmd)) unless splits[1]
+      arg = splits[1].to_sym
+      return m.reply(not_args(cmd, *can_set)) unless can_set.include?(arg)
+      argarg = splits[2]
+      return m.reply(need_args([cmd, splits[1]].join(" "))) unless argarg
+      if arg == :password && m.public?
+        return m.reply(_("is that a joke? setting the password in public?"))
+      end
+      set_prop(butarget, arg, argarg)
+      @bot.auth.set_changed
+      auth_manage_user(m, {:data => ["show", arg.to_s, "for", butarget.username] })
+
+    when :reset
+      return m.reply(_("you can't change the default user")) if
+             butarget.default? && !botuser.permit?("auth::edit::default")
+      return m.reply(_("you can't edit %{user}") % {:user=>butarget.username}) if
+             butarget != botuser && !botuser.permit?("auth::edit::other")
+
+      return m.reply(need_args(cmd)) unless splits[1]
+      things = []
+      skipped = []
+      splits[1..-1].each { |a|
+        arg = a.to_sym
+        if can_reset.include?(arg)
+          reset_prop(butarget, arg)
+          things << a
+        else
+          skipped << a
+        end
+      }
+
+      m.reply(_("I ignored %{things} because %{reason}") %
+                { :things => skipped.join(', '),
+                  :reason => not_args(cmd, *can_reset)}) unless skipped.empty?
+      if things.empty?
+        m.reply _("I haven't changed anything")
+      else
+        @bot.auth.set_changed
+        @bot.say(m.source, _("the password for %{user} is now %{password}") %
+          {:user => butarget.username, :password => butarget.password}) if
+          things.include?("password")
+        return auth_manage_user(m, {:data => (["show"] + things - ["password"]) + ["for", butarget.username]})
+      end
+
+    when :add, :rm, :remove, :del, :delete
+      return m.reply(_("you can't change the default user")) if
+             butarget.default? && !botuser.permit?("auth::edit::default")
+      return m.reply(_("you can't edit %{user}") % {:user => butarget.username}) if
+             butarget != botuser && !botuser.permit?("auth::edit::other")
+
+      arg = splits[1]
+      if arg.nil? or arg !~ /netmasks?/ or splits[2].nil?
+        return m.reply(_("I can only add/remove netmasks. See +help user add+ for more instructions"))
+      end
+
+      method = cmd.to_sym == :add ? :add_netmask : :delete_netmask
+
+      failed = []
+
+      splits[2..-1].each { |mask|
+        begin
+          butarget.send(method, mask.to_irc_netmask(:server => @bot.server))
+        rescue => e
+          debug "failed with #{e.message}"
+          debug e.backtrace.join("\n")
+          failed << mask
+        end
+      }
+      m.reply "I failed to #{cmd} #{failed.join(', ')}" unless failed.empty?
+      @bot.auth.set_changed
+      return auth_manage_user(m, {:data => ["show", "netmasks", "for", butarget.username] })
+
+    else
+      m.reply _("sorry, I don't know how to %{request}") % {:request => m.message}
+    end
+    rescue => e
+      m.reply _("couldn't %{cmd}: %{exception}") % {:cmd => cmd, :exception => e}
+    end
+  end
+
+  def auth_meet(m, params)
+    nick = params[:nick]
+    if !nick
+      # we are actually responding to a 'hello' command
+      unless m.botuser.transient?
+        m.reply @bot.lang.get('hello_X') % m.botuser
+        return
+      end
+      nick = m.sourcenick
+      irc_user = m.source
+    else
+      # m.channel is always an Irc::Channel because the command is either
+      # public-only 'meet' or private/public 'hello' which was handled by
+      # the !nick case, so this shouldn't fail
+      irc_user = m.channel.users[nick]
+      return m.reply("I don't see anyone named '#{nick}' here") unless irc_user
+    end
+    # BotUser name
+    buname = params[:user] || nick
+    begin
+      call_event(:botuser,:pre_perm, {:irc_user => irc_user, :bot_user => buname})
+      met = @bot.auth.make_permanent(irc_user, buname)
+      @bot.auth.set_changed
+      call_event(:botuser,:post_perm, {:irc_user => irc_user, :bot_user => buname})
+      m.reply @bot.lang.get('hello_X') % met
+      @bot.say nick, _("you are now registered as %{buname}. I created a random password for you : %{pass} and you can change it at any time by telling me 'user set password <password>' in private" % {
+        :buname => buname,
+        :pass => met.password
+      })
+    rescue RuntimeError
+      # or can this happen for other cases too?
+      # TODO autologin if forced
+      m.reply _("but I already know %{buname}" % {:buname => buname})
+    rescue => e
+      m.reply _("I had problems meeting %{nick}: %{e}" % { :nick => nick, :e => e })
+    end
+  end
+
+  def auth_tell_password(m, params)
+    user = params[:user]
+    begin
+      botuser = @bot.auth.get_botuser(params[:botuser])
+    rescue
+      return m.reply(_("couldn't find botuser %{user}") % {:user => params[:botuser]})
+    end
+    m.reply(_("I'm not telling the master password to anyway, pal")) if botuser == @bot.auth.botowner
+    msg = _("the password for botuser %{user} is %{password}") %
+          {:user => botuser.username, :password => botuser.password}
+    @bot.say user, msg
+    @bot.say m.source, _("I told %{user} that %{message}") % {:user => user, :message => msg}
+  end
+
+  def auth_create_user(m, params)
+    name = params[:name]
+    password = params[:password]
+    return m.reply(_("are you nuts, creating a botuser with a publicly known password?")) if m.public? and not password.nil?
+    begin
+      bu = @bot.auth.create_botuser(name, password)
+      @bot.auth.set_changed
+    rescue => e
+      m.reply(_("failed to create %{user}: %{exception}") % {:user => name,  :exception => e})
+      debug e.inspect + "\n" + e.backtrace.join("\n")
+      return
+    end
+    m.reply(_("created botuser %{user}") % {:user => bu.username})
+  end
+
+  def auth_list_users(m, params)
+    # TODO name regexp to filter results
+    list = @bot.auth.save_array.inject([]) { |list, x| ['everyone', 'owner'].include?(x[:username]) ? list : list << x[:username] }
+    if defined?(@destroy_q)
+      list.map! { |x|
+        @destroy_q.include?(x) ? x + _(" (queued for destruction)") : x
+      }
+    end
+    return m.reply(_("I have no botusers other than the default ones")) if list.empty?
+    return m.reply(n_("botuser: %{list}", "botusers: %{list}", list.length) %
+                   {:list => list.join(', ')})
+  end
+
+  def auth_destroy_user(m, params)
+    @destroy_q = [] unless defined?(@destroy_q)
+    buname = params[:name]
+    return m.reply(_("You can't destroy %{user}") % {:user => buname}) if
+           ["everyone", "owner"].include?(buname)
+    mod = params[:modifier].to_sym rescue nil
+
+    buser_array = @bot.auth.save_array
+    buser_hash = buser_array.inject({}) { |h, u|
+      h[u[:username]] = u
+      h
+    }
+
+    return m.reply(_("no such botuser %{user}") % {:user=>buname}) unless
+           buser_hash.keys.include?(buname)
+
+    case mod
+    when :cancel
+      if @destroy_q.include?(buname)
+        @destroy_q.delete(buname)
+        m.reply(_("%{user} removed from the destruction queue") % {:user=>buname})
+      else
+        m.reply(_("%{user} was not queued for destruction") % {:user=>buname})
+      end
+      return
+    when nil
+      if @destroy_q.include?(buname)
+        return m.reply(_("%{user} already queued for destruction, use %{highlight}user confirm destroy %{user}%{highlight} to destroy it") % {:user=>buname, :highlight=>Bold})
+      else
+        @destroy_q << buname
+        return m.reply(_("%{user} queued for destruction, use %{highlight}user confirm destroy %{user}%{highlight} to destroy it") % {:user=>buname, :highlight=>Bold})
+      end
+    when :confirm
+      begin
+        return m.reply(_("%{user} is not queued for destruction yet") %
+               {:user=>buname}) unless @destroy_q.include?(buname)
+        buser_array.delete_if { |u|
+          u[:username] == buname
+        }
+        @destroy_q.delete(buname)
+        @bot.auth.load_array(buser_array, true)
+        @bot.auth.set_changed
+      rescue => e
+        return m.reply(_("failed: %{exception}") % {:exception => e})
+      end
+      return m.reply(_("botuser %{user} destroyed") % {:user => buname})
+    end
+  end
+
+  def auth_copy_ren_user(m, params)
+    source = Auth::BotUser.sanitize_username(params[:source])
+    dest = Auth::BotUser.sanitize_username(params[:dest])
+    return m.reply(_("please don't touch the default users")) unless
+      (["everyone", "owner"] & [source, dest]).empty?
+
+    buser_array = @bot.auth.save_array
+    buser_hash = buser_array.inject({}) { |h, u|
+      h[u[:username]] = u
+      h
+    }
+
+    return m.reply(_("no such botuser %{source}") % {:source=>source}) unless
+           buser_hash.keys.include?(source)
+    return m.reply(_("botuser %{dest} exists already") % {:dest=>dest}) if
+           buser_hash.keys.include?(dest)
+
+    copying = m.message.split[1] == "copy"
+    begin
+      if copying
+        h = {}
+        buser_hash[source].each { |k, val|
+          h[k] = val.dup
+        }
+      else
+        h = buser_hash[source]
+      end
+      h[:username] = dest
+      buser_array << h if copying
+
+      @bot.auth.load_array(buser_array, true)
+      @bot.auth.set_changed
+      call_event(:botuser, copying ? :copy : :rename, :source => source, :dest => dest)
+    rescue => e
+      return m.reply(_("failed: %{exception}") % {:exception=>e})
+    end
+    if copying
+      m.reply(_("botuser %{source} copied to %{dest}") %
+           {:source=>source, :dest=>dest})
+    else
+      m.reply(_("botuser %{source} renamed to %{dest}") %
+           {:source=>source, :dest=>dest})
+    end
+
+  end
+
+  def auth_export(m, params)
+
+    exportfile = "#{@bot.botclass}/new-auth.users"
+
+    what = params[:things]
+
+    has_to = what[-2] == "to"
+    if has_to
+      exportfile = "#{@bot.botclass}/#{what[-1]}"
+      what.slice!(-2,2)
+    end
+
+    what.delete("all")
+
+    m.reply _("selecting data to export ...")
+
+    buser_array = @bot.auth.save_array
+    buser_hash = buser_array.inject({}) { |h, u|
+      h[u[:username]] = u
+      h
+    }
+
+    if what.empty?
+      we_want = buser_hash
+    else
+      we_want = buser_hash.delete_if { |key, val|
+        not what.include?(key)
+      }
+    end
+
+    m.reply _("preparing data for export ...")
+    begin
+      yaml_hash = {}
+      we_want.each { |k, val|
+        yaml_hash[k] = {}
+        val.each { |kk, v|
+          case kk
+          when :username
+            next
+          when :netmasks
+            yaml_hash[k][kk] = []
+            v.each { |nm|
+              yaml_hash[k][kk] << {
+                :fullform => nm.fullform,
+                :casemap => nm.casemap.to_s
+              }
+            }
+          else
+            yaml_hash[k][kk] = v
+          end
+        }
+      }
+    rescue => e
+      m.reply _("failed to prepare data: %{exception}") % {:exception=>e}
+      debug e.backtrace.dup.unshift(e.inspect).join("\n")
+      return
+    end
+
+    m.reply _("exporting to %{file} ...") % {:file=>exportfile}
+    begin
+      # m.reply yaml_hash.inspect
+      File.open(exportfile, "w") do |file|
+        file.puts YAML::dump(yaml_hash)
+      end
+    rescue => e
+      m.reply _("failed to export users: %{exception}") % {:exception=>e}
+      debug e.backtrace.dup.unshift(e.inspect).join("\n")
+      return
+    end
+    m.reply _("done")
+  end
+
+  def auth_import(m, params)
+
+    importfile = "#{@bot.botclass}/new-auth.users"
+
+    what = params[:things]
+
+    has_from = what[-2] == "from"
+    if has_from
+      importfile = "#{@bot.botclass}/#{what[-1]}"
+      what.slice!(-2,2)
+    end
+
+    what.delete("all")
+
+    m.reply _("reading %{file} ...") % {:file=>importfile}
+    begin
+      yaml_hash = YAML::load_file(importfile)
+    rescue => e
+      m.reply _("failed to import from: %{exception}") % {:exception=>e}
+      debug e.backtrace.dup.unshift(e.inspect).join("\n")
+      return
+    end
+
+    # m.reply yaml_hash.inspect
+
+    m.reply _("selecting data to import ...")
+
+    if what.empty?
+      we_want = yaml_hash
+    else
+      we_want = yaml_hash.delete_if { |key, val|
+        not what.include?(key)
+      }
+    end
+
+    m.reply _("parsing data from import ...")
+
+    buser_hash = {}
+
+    begin
+      yaml_hash.each { |k, val|
+        buser_hash[k] = { :username => k }
+        val.each { |kk, v|
+          case kk
+          when :netmasks
+            buser_hash[k][kk] = []
+            v.each { |nm|
+              buser_hash[k][kk] << nm[:fullform].to_irc_netmask(:casemap => nm[:casemap].to_irc_casemap).to_irc_netmask(:server => @bot.server)
+            }
+          else
+            buser_hash[k][kk] = v
+          end
+        }
+      }
+    rescue => e
+      m.reply _("failed to parse data: %{exception}") % {:exception=>e}
+      debug e.backtrace.dup.unshift(e.inspect).join("\n")
+      return
+    end
+
+    # m.reply buser_hash.inspect
+
+    org_buser_array = @bot.auth.save_array
+    org_buser_hash = org_buser_array.inject({}) { |h, u|
+      h[u[:username]] = u
+      h
+    }
+
+    # TODO we may want to do a(n optional) key-by-key merge
+    #
+    org_buser_hash.merge!(buser_hash)
+    new_buser_array = org_buser_hash.values
+    @bot.auth.load_array(new_buser_array, true)
+    @bot.auth.set_changed
+
+    m.reply _("done")
+  end
+
+end
+
+auth = AuthModule.new
+
+auth.map "user export *things",
+  :action => 'auth_export',
+  :defaults => { :things => ['all'] },
+  :auth_path => ':manage:fedex:'
+
+auth.map "user import *things",
+ :action => 'auth_import',
+ :auth_path => ':manage:fedex:'
+
+auth.map "user create :name :password",
+  :action => 'auth_create_user',
+  :defaults => {:password => nil},
+  :auth_path => ':manage:'
+
+auth.map "user [:modifier] destroy :name",
+  :action => 'auth_destroy_user',
+  :requirements => { :modifier => /^(cancel|confirm)?$/ },
+  :defaults => { :modifier => '' },
+  :auth_path => ':manage::destroy!'
+
+auth.map "user copy :source [to] :dest",
+  :action => 'auth_copy_ren_user',
+  :auth_path => ':manage:'
+
+auth.map "user rename :source [to] :dest",
+  :action => 'auth_copy_ren_user',
+  :auth_path => ':manage:'
+
+auth.map "meet :nick [as :user]",
+  :action => 'auth_meet',
+  :auth_path => 'user::manage', :private => false
+
+auth.map "hello",
+  :action => 'auth_meet',
+  :auth_path => 'user::manage::meet'
+
+auth.default_auth("user::manage", false)
+auth.default_auth("user::manage::meet::hello", true)
+
+auth.map "user tell :user the password for :botuser",
+  :action => 'auth_tell_password',
+  :auth_path => ':manage:'
+
+auth.map "user list",
+  :action => 'auth_list_users',
+  :auth_path => '::'
+
+auth.map "user *data",
+  :action => 'auth_manage_user'
+
+auth.default_auth("user", true)
+auth.default_auth("edit::other", false)
+
+auth.map "whoami",
+  :action => 'auth_whoami',
+  :auth_path => '!*!'
+
+auth.map "who is :user",
+  :action => 'auth_whois',
+  :auth_path => '!*!'
+
+auth.map "auth :password",
+  :action => 'auth_auth',
+  :public => false,
+  :auth_path => '!login!'
+
+auth.map "login :botuser :password",
+  :action => 'auth_login',
+  :public => false,
+  :defaults => { :password => nil },
+  :auth_path => '!login!'
+
+auth.map "login :botuser",
+  :action => 'auth_login',
+  :auth_path => '!login!'
+
+auth.map "login",
+  :action => 'auth_autologin',
+  :auth_path => '!login!'
+
+auth.map "permissions set *args",
+  :action => 'auth_edit_perm',
+  :auth_path => ':edit::set:'
+
+auth.map "permissions reset *args",
+  :action => 'auth_edit_perm',
+  :auth_path => ':edit::set:'
+
+auth.map "permissions view [for :user]",
+  :action => 'auth_view_perm',
+  :auth_path => '::'
+
+auth.map "permissions search *pattern",
+  :action => 'auth_search_perm',
+  :auth_path => '::'
+
+auth.default_auth('*', false)
+
diff --git a/lib/rbot/core/basics.rb b/lib/rbot/core/basics.rb
index 4b5ab7d3..7a5d82c1 100644
--- a/lib/rbot/core/basics.rb
+++ b/lib/rbot/core/basics.rb
@@ -1,188 +1,188 @@
-#-- vim:sw=2:et

-#++

-#

-# :title: rbot basic management from IRC

-#

-# Author:: Giuseppe "Oblomov" Bilotta <giuseppe.bilotta@gmail.com>

-# Copyright:: (C) 2006,2007 Giuseppe Bilotta

-# License:: GPL v2

-

-class BasicsModule < CoreBotModule

-

-  def ctcp_listen(m)

-    who = m.private? ? "me" : m.target

-    case m.ctcp.intern

-    when :PING

-      m.ctcp_reply m.message

-      @bot.irclog "@ #{m.source} pinged #{who}"

-    when :TIME

-      m.ctcp_reply Time.now.to_s

-      @bot.irclog "@ #{m.source} asked #{who} what time it is"

-    end

-  end

-

-  def bot_join(m, param)

-    if param[:pass]

-      @bot.join param[:chan], param[:pass]

-    else

-      @bot.join param[:chan]

-    end

-  end

-

-  def bot_part(m, param)

-    if param[:chan]

-      @bot.part param[:chan]

-    else

-      @bot.part m.target if m.public?

-    end

-  end

-

-  def bot_quit(m, param)

-    @bot.quit param[:msg].to_s

-  end

-

-  def bot_restart(m, param)

-    @bot.restart param[:msg].to_s

-  end

-

-  def bot_hide(m, param)

-    @bot.join 0

-  end

-

-  def bot_say(m, param)

-    @bot.say param[:where], param[:what].to_s

-  end

-

-  def bot_action(m, param)

-    @bot.action param[:where], param[:what].to_s

-  end

-

-  def bot_mode(m, param)

-    @bot.mode param[:where], param[:what], param[:who].join(" ")

-  end

-

-  def bot_ping(m, param)

-    m.reply "pong"

-  end

-

-  def bot_quiet(m, param)

-    if param.has_key?(:where)

-      @bot.set_quiet param[:where].sub(/^here$/, m.target.downcase)

-    else

-      @bot.set_quiet

-    end

-    # Make sense when the commmand is given in private or in a non-quieted

-    # channel

-    m.okay

-  end

-

-  def bot_talk(m, param)

-    if param.has_key?(:where)

-      @bot.reset_quiet param[:where].sub(/^here$/, m.target.downcase)

-    else

-      @bot.reset_quiet

-    end

-    # Make sense when the commmand is given in private or in a non-quieted

-    # channel

-    m.okay

-  end

-

-  def bot_help(m, param)

-    m.reply @bot.help(param[:topic].join(" "))

-  end

-

-  #TODO move these to a "chatback" plugin

-  # when (/^(botsnack|ciggie)$/i)

-  #   @bot.say m.replyto, @lang.get("thanks_X") % m.sourcenick if(m.public?)

-  #   @bot.say m.replyto, @lang.get("thanks") if(m.private?)

-  # when (/^#{Regexp.escape(@bot.nick)}!*$/)

-  #   @bot.say m.replyto, @lang.get("hello_X") % m.sourcenick

-

-  # handle help requests for "core" topics

-  def help(cmd, topic="")

-    case cmd

-    when "quit"

-      _("quit [<message>] => quit IRC with message <message>")

-    when "restart"

-      _("restart => completely stop and restart the bot (including reconnect)")

-    when "join"

-      _("join <channel> [<key>] => join channel <channel> with secret key <key> if specified. #{@bot.myself} also responds to invites if you have the required access level")

-    when "part"

-      _("part <channel> => part channel <channel>")

-    when "hide"

-      _("hide => part all channels")

-    when "nick"

-      _("nick <nick> => attempt to change nick to <nick>")

-    when "say"

-      _("say <channel>|<nick> <message> => say <message> to <channel> or in private message to <nick>")

-    when "action"

-      _("action <channel>|<nick> <message> => does a /me <message> to <channel> or in private message to <nick>")

-    when "quiet"

-      _("quiet [in here|<channel>] => with no arguments, stop speaking in all channels, if \"in here\", stop speaking in this channel, or stop speaking in <channel>")

-    when "talk"

-      _("talk [in here|<channel>] => with no arguments, resume speaking in all channels, if \"in here\", resume speaking in this channel, or resume speaking in <channel>")

-    when "ping"

-      _("ping => replies with a pong")

-    when "mode"

-      _("mode <channel> <mode> <nicks> => set channel modes for <nicks> on <channel> to <mode>")

-    #     when "botsnack"

-    #       return "botsnack => reward #{@bot.myself} for being good"

-    #     when "hello"

-    #       return "hello|hi|hey|yo [#{@bot.myself}] => greet the bot"

-    else

-      _("%{name}: quit, restart, join, part, hide, save, nick, say, action, topic, quiet, talk, ping, mode") % {:name=>name}

-      #, botsnack, hello

-    end

-  end

-end

-

-basics = BasicsModule.new

-

-basics.map "quit *msg",

-  :action => 'bot_quit',

-  :defaults => { :msg => nil },

-  :auth_path => 'quit'

-basics.map "restart *msg",

-  :action => 'bot_restart',

-  :defaults => { :msg => nil },

-  :auth_path => 'quit'

-

-basics.map "quiet [in] [:where]",

-  :action => 'bot_quiet',

-  :auth_path => 'talk::set'

-basics.map "talk [in] [:where]",

-  :action => 'bot_talk',

-  :auth_path => 'talk::set'

-

-basics.map "say :where *what",

-  :action => 'bot_say',

-  :auth_path => 'talk::do'

-basics.map "action :where *what",

-  :action => 'bot_action',

-  :auth_path => 'talk::do'

-basics.map "mode :where :what *who",

-  :action => 'bot_mode',

-  :auth_path => 'talk::do'

-

-basics.map "join :chan :pass", 

-  :action => 'bot_join',

-  :defaults => {:pass => nil},

-  :auth_path => 'move'

-basics.map "part :chan",

-  :action => 'bot_part',

-  :defaults => {:chan => nil},

-  :auth_path => 'move'

-basics.map "hide",

-  :action => 'bot_hide',

-  :auth_path => 'move'

-

-basics.map "ping",

-  :action => 'bot_ping',

-  :auth_path => '!ping!'

-basics.map "help *topic",

-  :action => 'bot_help',

-  :defaults => { :topic => [""] },

-  :auth_path => '!help!'

-

-basics.default_auth('*', false)

-

+#-- vim:sw=2:et
+#++
+#
+# :title: rbot basic management from IRC
+#
+# Author:: Giuseppe "Oblomov" Bilotta <giuseppe.bilotta@gmail.com>
+# Copyright:: (C) 2006,2007 Giuseppe Bilotta
+# License:: GPL v2
+
+class BasicsModule < CoreBotModule
+
+  def ctcp_listen(m)
+    who = m.private? ? "me" : m.target
+    case m.ctcp.intern
+    when :PING
+      m.ctcp_reply m.message
+      @bot.irclog "@ #{m.source} pinged #{who}"
+    when :TIME
+      m.ctcp_reply Time.now.to_s
+      @bot.irclog "@ #{m.source} asked #{who} what time it is"
+    end
+  end
+
+  def bot_join(m, param)
+    if param[:pass]
+      @bot.join param[:chan], param[:pass]
+    else
+      @bot.join param[:chan]
+    end
+  end
+
+  def bot_part(m, param)
+    if param[:chan]
+      @bot.part param[:chan]
+    else
+      @bot.part m.target if m.public?
+    end
+  end
+
+  def bot_quit(m, param)
+    @bot.quit param[:msg].to_s
+  end
+
+  def bot_restart(m, param)
+    @bot.restart param[:msg].to_s
+  end
+
+  def bot_hide(m, param)
+    @bot.join 0
+  end
+
+  def bot_say(m, param)
+    @bot.say param[:where], param[:what].to_s
+  end
+
+  def bot_action(m, param)
+    @bot.action param[:where], param[:what].to_s
+  end
+
+  def bot_mode(m, param)
+    @bot.mode param[:where], param[:what], param[:who].join(" ")
+  end
+
+  def bot_ping(m, param)
+    m.reply "pong"
+  end
+
+  def bot_quiet(m, param)
+    if param.has_key?(:where)
+      @bot.set_quiet param[:where].sub(/^here$/, m.target.downcase)
+    else
+      @bot.set_quiet
+    end
+    # Make sense when the commmand is given in private or in a non-quieted
+    # channel
+    m.okay
+  end
+
+  def bot_talk(m, param)
+    if param.has_key?(:where)
+      @bot.reset_quiet param[:where].sub(/^here$/, m.target.downcase)
+    else
+      @bot.reset_quiet
+    end
+    # Make sense when the commmand is given in private or in a non-quieted
+    # channel
+    m.okay
+  end
+
+  def bot_help(m, param)
+    m.reply @bot.help(param[:topic].join(" "))
+  end
+
+  #TODO move these to a "chatback" plugin
+  # when (/^(botsnack|ciggie)$/i)
+  #   @bot.say m.replyto, @lang.get("thanks_X") % m.sourcenick if(m.public?)
+  #   @bot.say m.replyto, @lang.get("thanks") if(m.private?)
+  # when (/^#{Regexp.escape(@bot.nick)}!*$/)
+  #   @bot.say m.replyto, @lang.get("hello_X") % m.sourcenick
+
+  # handle help requests for "core" topics
+  def help(cmd, topic="")
+    case cmd
+    when "quit"
+      _("quit [<message>] => quit IRC with message <message>")
+    when "restart"
+      _("restart => completely stop and restart the bot (including reconnect)")
+    when "join"
+      _("join <channel> [<key>] => join channel <channel> with secret key <key> if specified. #{@bot.myself} also responds to invites if you have the required access level")
+    when "part"
+      _("part <channel> => part channel <channel>")
+    when "hide"
+      _("hide => part all channels")
+    when "nick"
+      _("nick <nick> => attempt to change nick to <nick>")
+    when "say"
+      _("say <channel>|<nick> <message> => say <message> to <channel> or in private message to <nick>")
+    when "action"
+      _("action <channel>|<nick> <message> => does a /me <message> to <channel> or in private message to <nick>")
+    when "quiet"
+      _("quiet [in here|<channel>] => with no arguments, stop speaking in all channels, if \"in here\", stop speaking in this channel, or stop speaking in <channel>")
+    when "talk"
+      _("talk [in here|<channel>] => with no arguments, resume speaking in all channels, if \"in here\", resume speaking in this channel, or resume speaking in <channel>")
+    when "ping"
+      _("ping => replies with a pong")
+    when "mode"
+      _("mode <channel> <mode> <nicks> => set channel modes for <nicks> on <channel> to <mode>")
+    #     when "botsnack"
+    #       return "botsnack => reward #{@bot.myself} for being good"
+    #     when "hello"
+    #       return "hello|hi|hey|yo [#{@bot.myself}] => greet the bot"
+    else
+      _("%{name}: quit, restart, join, part, hide, save, nick, say, action, topic, quiet, talk, ping, mode") % {:name=>name}
+      #, botsnack, hello
+    end
+  end
+end
+
+basics = BasicsModule.new
+
+basics.map "quit *msg",
+  :action => 'bot_quit',
+  :defaults => { :msg => nil },
+  :auth_path => 'quit'
+basics.map "restart *msg",
+  :action => 'bot_restart',
+  :defaults => { :msg => nil },
+  :auth_path => 'quit'
+
+basics.map "quiet [in] [:where]",
+  :action => 'bot_quiet',
+  :auth_path => 'talk::set'
+basics.map "talk [in] [:where]",
+  :action => 'bot_talk',
+  :auth_path => 'talk::set'
+
+basics.map "say :where *what",
+  :action => 'bot_say',
+  :auth_path => 'talk::do'
+basics.map "action :where *what",
+  :action => 'bot_action',
+  :auth_path => 'talk::do'
+basics.map "mode :where :what *who",
+  :action => 'bot_mode',
+  :auth_path => 'talk::do'
+
+basics.map "join :chan :pass", 
+  :action => 'bot_join',
+  :defaults => {:pass => nil},
+  :auth_path => 'move'
+basics.map "part :chan",
+  :action => 'bot_part',
+  :defaults => {:chan => nil},
+  :auth_path => 'move'
+basics.map "hide",
+  :action => 'bot_hide',
+  :auth_path => 'move'
+
+basics.map "ping",
+  :action => 'bot_ping',
+  :auth_path => '!ping!'
+basics.map "help *topic",
+  :action => 'bot_help',
+  :defaults => { :topic => [""] },
+  :auth_path => '!help!'
+
+basics.default_auth('*', false)
+
diff --git a/lib/rbot/core/config.rb b/lib/rbot/core/config.rb
index ad9b7c74..1b14ebd8 100644
--- a/lib/rbot/core/config.rb
+++ b/lib/rbot/core/config.rb
@@ -1,325 +1,325 @@
-#-- vim:sw=2:et

-#++

-#

-# :title: rbot config management from IRC

-#

-# Author:: Giuseppe "Oblomov" Bilotta <giuseppe.bilotta@gmail.com>

-# Copyright:: (C) 2006,2007 Giuseppe Bilotta

-# License:: GPL v2

-

-class ConfigModule < CoreBotModule

-

-  def version_string

-    _("I'm a v. %{version} rubybot%{copyright}%{url}") % {

-      :version => $version,

-      :copyright => ", #{Irc::Bot::COPYRIGHT_NOTICE}",

-      :url => " - #{Irc::Bot::SOURCE_URL}"

-    }

-  end

-

-  def save

-    @bot.config.save

-  end

-

-  def handle_list(m, params)

-    modules = []

-    if params[:module]

-      @bot.config.items.each_key do |key|

-        mod, name = key.to_s.split('.')

-        next unless mod == params[:module]

-        modules.push key unless modules.include?(name)

-      end

-      if modules.empty?

-        m.reply _("no such module %{module}") % {:module => params[:module]}

-      else

-        m.reply modules.join(", ")

-      end

-    else

-      @bot.config.items.each_key do |key|

-        name = key.to_s.split('.').first

-        modules.push name unless modules.include?(name)

-      end

-      m.reply "modules: " + modules.join(", ")

-    end

-  end

-

-  def handle_get(m, params)

-    key = params[:key].to_s.intern

-    unless @bot.config.items.has_key?(key)

-      m.reply _("no such config key %{key}") % {:key => key}

-      return

-    end

-    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)

-    value = @bot.config.items[key].to_s

-    m.reply "#{key}: #{value}"

-  end

-

-  def handle_desc(m, params)

-    key = params[:key].to_s.intern

-    unless @bot.config.items.has_key?(key)

-      m.reply _("no such config key %{key}") % {:key => key}

-    end

-    m.reply "#{key}: #{@bot.config.items[key].desc}"

-  end

-

-  def handle_search(m, params)

-    rx = Regexp.new(params[:rx].to_s, true)

-    cfs = []

-    @bot.config.items.each do |k, v|

-      cfs << v if k.to_s.match(rx) or (v.desc.match(rx) rescue false)

-    end

-    if cfs.empty?

-      m.reply _("no config key found matching %{r}") % { :r => params[:rx].to_s}

-    else

-      m.reply _("possible keys: %{kl}") % { :kl => cfs.map { |c| c.key}.join(', ') }

-      m.reply cfs.map { |c| [c.key, c.desc].join(': ') }.join("\n")

-    end

-  end

-

-  def handle_unset(m, params)

-    key = params[:key].to_s.intern

-    unless @bot.config.items.has_key?(key)

-      m.reply _("no such config key %{key}") % {:key => key}

-    end

-    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)

-    @bot.config.items[key].unset

-    handle_get(m, params)

-    m.reply _("this config change will take effect on the next restart") if @bot.config.items[key].requires_restart

-    m.reply _("this config change will take effect on the next rescan") if @bot.config.items[key].requires_rescan

-  end

-

-  def handle_set(m, params)

-    key = params[:key].to_s.intern

-    value = params[:value].join(" ")

-    unless @bot.config.items.has_key?(key)

-      m.reply _("no such config key %{key}") % {:key => key} unless params[:silent]

-      return false

-    end

-    return false if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)

-    begin

-      @bot.config.items[key].set_string(value)

-    rescue ArgumentError => e

-      m.reply _("failed to set %{key}: %{error}") % {:key => key, :error => e.message} unless params[:silent]

-      return false

-    end

-    if @bot.config.items[key].requires_restart

-      m.reply _("this config change will take effect on the next restart") unless params[:silent]

-      return :restart

-    elsif @bot.config.items[key].requires_rescan

-      m.reply _("this config change will take effect on the next rescan") unless params[:silent]

-      return :rescan

-    else

-      m.okay unless params[:silent]

-      return true

-    end

-  end

-

-  def handle_add(m, params)

-    key = params[:key].to_s.intern

-    value = params[:value]

-    unless @bot.config.items.has_key?(key)

-      m.reply _("no such config key %{key}") % {:key => key}

-      return

-    end

-    unless @bot.config.items[key].kind_of?(Config::ArrayValue)

-      m.reply _("config key %{key} is not an array") % {:key => key}

-      return

-    end

-    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)

-    begin

-      @bot.config.items[key].add(value)

-    rescue ArgumentError => e

-      m.reply _("failed to add %{value} to %{key}: %{error}") % {:value => value, :key => key, :error => e.message}

-      return

-    end

-    handle_get(m,{:key => key})

-    m.reply _("this config change will take effect on the next restart") if @bot.config.items[key].requires_restart

-    m.reply _("this config change will take effect on the next rescan") if @bot.config.items[key].requires_rescan

-  end

-

-  def handle_rm(m, params)

-    key = params[:key].to_s.intern

-    value = params[:value]

-    unless @bot.config.items.has_key?(key)

-      m.reply _("no such config key %{key}") % {:key => key}

-      return

-    end

-    unless @bot.config.items[key].kind_of?(Config::ArrayValue)

-      m.reply _("config key %{key} is not an array") % {:key => key}

-      return

-    end

-    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)

-    begin

-      @bot.config.items[key].rm(value)

-    rescue ArgumentError => e

-      m.reply _("failed to remove %{value} from %{key}: %{error}") % {:value => value, :key => key, :error => e.message}

-      return

-    end

-    handle_get(m,{:key => key})

-    m.reply _("this config change will take effect on the next restart") if @bot.config.items[key].requires_restart

-    m.reply _("this config change will take effect on the next rescan") if @bot.config.items[key].requires_rescan

-  end

-

-  def bot_save(m, param)

-    @bot.save

-    m.okay

-  end

-

-  def bot_rescan(m, param)

-    m.reply _("saving ...")

-    @bot.save

-    m.reply _("rescanning ...")

-    @bot.rescan

-    m.reply _("done. %{plugin_status}") % {:plugin_status => @bot.plugins.status(true)}

-  end

-

-  def bot_nick(m, param)

-    @bot.nickchg(param[:nick])

-  end

-

-  def bot_status(m, param)

-    m.reply @bot.status

-  end

-

-  # TODO is this one of the methods that disappeared when the bot was moved

-  # from the single-file to the multi-file registry?

-  #

-  #  def bot_reg_stat(m, param)

-  #    m.reply @registry.stat.inspect

-  #  end

-

-  def bot_version(m, param)

-    m.reply version_string

-  end

-

-  def ctcp_listen(m)

-    who = m.private? ? "me" : m.target

-    case m.ctcp.intern

-    when :VERSION

-      m.ctcp_reply version_string

-      @bot.irclog "@ #{m.source} asked #{who} about version info"

-    when :SOURCE

-      m.ctcp_reply Irc::Bot::SOURCE_URL

-      @bot.irclog "@ #{m.source} asked #{who} about source info"

-    end

-  end

-

-  def handle_help(m, params)

-    m.reply help(params[:topic])

-  end

-

-  def help(plugin, topic="")

-    case plugin

-    when "config"

-      case topic

-      when "list"

-      _("config list => list configuration modules, config list <module> => list configuration keys for module <module>")

-      when "get"

-      _("config get <key> => get configuration value for key <key>")

-      when "unset"

-      _("reset key <key> to the default")

-      when "set"

-      _("config set <key> <value> => set configuration value for key <key> to <value>")

-      when "desc"

-      _("config desc <key> => describe what key <key> configures")

-      when "add"

-      _("config add <value> to <key> => add value <value> to key <key> if <key> is an array")

-      when "rm"

-      _("config rm <value> from <key> => remove value <value> from key <key> if <key> is an array")

-      else

-      _("config module - bot configuration. usage: list, desc, get, set, unset, add, rm")

-      # else

-      #   "no help for config #{topic}"

-      end

-    when "nick"

-      _("nick <newnick> => change the bot nick to <newnick>, if possible")

-    when "status"

-      _("status => display some information on the bot's status")

-    when "save"

-      _("save => save current dynamic data and configuration")

-    when "rescan"

-      _("rescan => reload modules and static facts")

-    when "version"

-      _("version => describes software version")

-    else

-      _("config-related tasks: config, save, rescan, version, nick, status")

-    end

-  end

-

-end

-

-conf = ConfigModule.new

-

-conf.map 'config list :module',

-  :action => 'handle_list',

-  :defaults => {:module => false},

-  :auth_path => 'show'

-# TODO this one is presently a security risk, since the bot

-# stores the master password in the config. Do we need auth levels

-# on the Bot::Config keys too?

-conf.map 'config get :key',

-  :action => 'handle_get',

-  :auth_path => 'show'

-conf.map 'config desc :key',

-  :action => 'handle_desc',

-  :auth_path => 'show'

-conf.map 'config describe :key',

-  :action => 'handle_desc',

-  :auth_path => 'show::desc!'

-conf.map 'config search *rx',

-  :action => 'handle_search',

-  :auth_path => 'show'

-

-conf.map "save",

-  :action => 'bot_save'

-conf.map "rescan",

-  :action => 'bot_rescan'

-conf.map "nick :nick",

-  :action => 'bot_nick'

-conf.map "status",

-  :action => 'bot_status',

-  :auth_path => 'show::status'

-# TODO see above

-#

-# conf.map "registry stats",

-#   :action => 'bot_reg_stat',

-#   :auth_path => '!config::status'

-conf.map "version",

-  :action => 'bot_version',

-  :auth_path => 'show::status'

-

-conf.map 'config set :key *value',

-  :action => 'handle_set',

-  :auth_path => 'edit'

-conf.map 'config add :value to :key',

-  :action => 'handle_add',

-  :auth_path => 'edit'

-conf.map 'config rm :value from :key',

-  :action => 'handle_rm',

-  :auth_path => 'edit'

-conf.map 'config del :value from :key',

-  :action => 'handle_rm',

-  :auth_path => 'edit'

-conf.map 'config delete :value from :key',

-  :action => 'handle_rm',

-  :auth_path => 'edit'

-conf.map 'config unset :key',

-  :action => 'handle_unset',

-  :auth_path => 'edit'

-conf.map 'config reset :key',

-  :action => 'handle_unset',

-  :auth_path => 'edit'

-

-conf.map 'config help :topic',

-  :action => 'handle_help',

-  :defaults => {:topic => false},

-  :auth_path => '!help!'

-

-conf.default_auth('*', false)

-conf.default_auth('show', true)

-conf.default_auth('show::get', false)

-# TODO these shouldn't be set here, we need a way to let the default

-# permission be specified together with the ConfigValue

-conf.default_auth('key', true)

-conf.default_auth('key::auth::password', false)

-

+#-- vim:sw=2:et
+#++
+#
+# :title: rbot config management from IRC
+#
+# Author:: Giuseppe "Oblomov" Bilotta <giuseppe.bilotta@gmail.com>
+# Copyright:: (C) 2006,2007 Giuseppe Bilotta
+# License:: GPL v2
+
+class ConfigModule < CoreBotModule
+
+  def version_string
+    _("I'm a v. %{version} rubybot%{copyright}%{url}") % {
+      :version => $version,
+      :copyright => ", #{Irc::Bot::COPYRIGHT_NOTICE}",
+      :url => " - #{Irc::Bot::SOURCE_URL}"
+    }
+  end
+
+  def save
+    @bot.config.save
+  end
+
+  def handle_list(m, params)
+    modules = []
+    if params[:module]
+      @bot.config.items.each_key do |key|
+        mod, name = key.to_s.split('.')
+        next unless mod == params[:module]
+        modules.push key unless modules.include?(name)
+      end
+      if modules.empty?
+        m.reply _("no such module %{module}") % {:module => params[:module]}
+      else
+        m.reply modules.join(", ")
+      end
+    else
+      @bot.config.items.each_key do |key|
+        name = key.to_s.split('.').first
+        modules.push name unless modules.include?(name)
+      end
+      m.reply "modules: " + modules.join(", ")
+    end
+  end
+
+  def handle_get(m, params)
+    key = params[:key].to_s.intern
+    unless @bot.config.items.has_key?(key)
+      m.reply _("no such config key %{key}") % {:key => key}
+      return
+    end
+    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)
+    value = @bot.config.items[key].to_s
+    m.reply "#{key}: #{value}"
+  end
+
+  def handle_desc(m, params)
+    key = params[:key].to_s.intern
+    unless @bot.config.items.has_key?(key)
+      m.reply _("no such config key %{key}") % {:key => key}
+    end
+    m.reply "#{key}: #{@bot.config.items[key].desc}"
+  end
+
+  def handle_search(m, params)
+    rx = Regexp.new(params[:rx].to_s, true)
+    cfs = []
+    @bot.config.items.each do |k, v|
+      cfs << v if k.to_s.match(rx) or (v.desc.match(rx) rescue false)
+    end
+    if cfs.empty?
+      m.reply _("no config key found matching %{r}") % { :r => params[:rx].to_s}
+    else
+      m.reply _("possible keys: %{kl}") % { :kl => cfs.map { |c| c.key}.join(', ') }
+      m.reply cfs.map { |c| [c.key, c.desc].join(': ') }.join("\n")
+    end
+  end
+
+  def handle_unset(m, params)
+    key = params[:key].to_s.intern
+    unless @bot.config.items.has_key?(key)
+      m.reply _("no such config key %{key}") % {:key => key}
+    end
+    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)
+    @bot.config.items[key].unset
+    handle_get(m, params)
+    m.reply _("this config change will take effect on the next restart") if @bot.config.items[key].requires_restart
+    m.reply _("this config change will take effect on the next rescan") if @bot.config.items[key].requires_rescan
+  end
+
+  def handle_set(m, params)
+    key = params[:key].to_s.intern
+    value = params[:value].join(" ")
+    unless @bot.config.items.has_key?(key)
+      m.reply _("no such config key %{key}") % {:key => key} unless params[:silent]
+      return false
+    end
+    return false if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)
+    begin
+      @bot.config.items[key].set_string(value)
+    rescue ArgumentError => e
+      m.reply _("failed to set %{key}: %{error}") % {:key => key, :error => e.message} unless params[:silent]
+      return false
+    end
+    if @bot.config.items[key].requires_restart
+      m.reply _("this config change will take effect on the next restart") unless params[:silent]
+      return :restart
+    elsif @bot.config.items[key].requires_rescan
+      m.reply _("this config change will take effect on the next rescan") unless params[:silent]
+      return :rescan
+    else
+      m.okay unless params[:silent]
+      return true
+    end
+  end
+
+  def handle_add(m, params)
+    key = params[:key].to_s.intern
+    value = params[:value]
+    unless @bot.config.items.has_key?(key)
+      m.reply _("no such config key %{key}") % {:key => key}
+      return
+    end
+    unless @bot.config.items[key].kind_of?(Config::ArrayValue)
+      m.reply _("config key %{key} is not an array") % {:key => key}
+      return
+    end
+    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)
+    begin
+      @bot.config.items[key].add(value)
+    rescue ArgumentError => e
+      m.reply _("failed to add %{value} to %{key}: %{error}") % {:value => value, :key => key, :error => e.message}
+      return
+    end
+    handle_get(m,{:key => key})
+    m.reply _("this config change will take effect on the next restart") if @bot.config.items[key].requires_restart
+    m.reply _("this config change will take effect on the next rescan") if @bot.config.items[key].requires_rescan
+  end
+
+  def handle_rm(m, params)
+    key = params[:key].to_s.intern
+    value = params[:value]
+    unless @bot.config.items.has_key?(key)
+      m.reply _("no such config key %{key}") % {:key => key}
+      return
+    end
+    unless @bot.config.items[key].kind_of?(Config::ArrayValue)
+      m.reply _("config key %{key} is not an array") % {:key => key}
+      return
+    end
+    return if !@bot.auth.allow?(@bot.config.items[key].auth_path, m.source, m.replyto)
+    begin
+      @bot.config.items[key].rm(value)
+    rescue ArgumentError => e
+      m.reply _("failed to remove %{value} from %{key}: %{error}") % {:value => value, :key => key, :error => e.message}
+      return
+    end
+    handle_get(m,{:key => key})
+    m.reply _("this config change will take effect on the next restart") if @bot.config.items[key].requires_restart
+    m.reply _("this config change will take effect on the next rescan") if @bot.config.items[key].requires_rescan
+  end
+
+  def bot_save(m, param)
+    @bot.save
+    m.okay
+  end
+
+  def bot_rescan(m, param)
+    m.reply _("saving ...")
+    @bot.save
+    m.reply _("rescanning ...")
+    @bot.rescan
+    m.reply _("done. %{plugin_status}") % {:plugin_status => @bot.plugins.status(true)}
+  end
+
+  def bot_nick(m, param)
+    @bot.nickchg(param[:nick])
+  end
+
+  def bot_status(m, param)
+    m.reply @bot.status
+  end
+
+  # TODO is this one of the methods that disappeared when the bot was moved
+  # from the single-file to the multi-file registry?
+  #
+  #  def bot_reg_stat(m, param)
+  #    m.reply @registry.stat.inspect
+  #  end
+
+  def bot_version(m, param)
+    m.reply version_string
+  end
+
+  def ctcp_listen(m)
+    who = m.private? ? "me" : m.target
+    case m.ctcp.intern
+    when :VERSION
+      m.ctcp_reply version_string
+      @bot.irclog "@ #{m.source} asked #{who} about version info"
+    when :SOURCE
+      m.ctcp_reply Irc::Bot::SOURCE_URL
+      @bot.irclog "@ #{m.source} asked #{who} about source info"
+    end
+  end
+
+  def handle_help(m, params)
+    m.reply help(params[:topic])
+  end
+
+  def help(plugin, topic="")
+    case plugin
+    when "config"
+      case topic
+      when "list"
+      _("config list => list configuration modules, config list <module> => list configuration keys for module <module>")
+      when "get"
+      _("config get <key> => get configuration value for key <key>")
+      when "unset"
+      _("reset key <key> to the default")
+      when "set"
+      _("config set <key> <value> => set configuration value for key <key> to <value>")
+      when "desc"
+      _("config desc <key> => describe what key <key> configures")
+      when "add"
+      _("config add <value> to <key> => add value <value> to key <key> if <key> is an array")
+      when "rm"
+      _("config rm <value> from <key> => remove value <value> from key <key> if <key> is an array")
+      else
+      _("config module - bot configuration. usage: list, desc, get, set, unset, add, rm")
+      # else
+      #   "no help for config #{topic}"
+      end
+    when "nick"
+      _("nick <newnick> => change the bot nick to <newnick>, if possible")
+    when "status"
+      _("status => display some information on the bot's status")
+    when "save"
+      _("save => save current dynamic data and configuration")
+    when "rescan"
+      _("rescan => reload modules and static facts")
+    when "version"
+      _("version => describes software version")
+    else
+      _("config-related tasks: config, save, rescan, version, nick, status")
+    end
+  end
+
+end
+
+conf = ConfigModule.new
+
+conf.map 'config list :module',
+  :action => 'handle_list',
+  :defaults => {:module => false},
+  :auth_path => 'show'
+# TODO this one is presently a security risk, since the bot
+# stores the master password in the config. Do we need auth levels
+# on the Bot::Config keys too?
+conf.map 'config get :key',
+  :action => 'handle_get',
+  :auth_path => 'show'
+conf.map 'config desc :key',
+  :action => 'handle_desc',
+  :auth_path => 'show'
+conf.map 'config describe :key',
+  :action => 'handle_desc',
+  :auth_path => 'show::desc!'
+conf.map 'config search *rx',
+  :action => 'handle_search',
+  :auth_path => 'show'
+
+conf.map "save",
+  :action => 'bot_save'
+conf.map "rescan",
+  :action => 'bot_rescan'
+conf.map "nick :nick",
+  :action => 'bot_nick'
+conf.map "status",
+  :action => 'bot_status',
+  :auth_path => 'show::status'
+# TODO see above
+#
+# conf.map "registry stats",
+#   :action => 'bot_reg_stat',
+#   :auth_path => '!config::status'
+conf.map "version",
+  :action => 'bot_version',
+  :auth_path => 'show::status'
+
+conf.map 'config set :key *value',
+  :action => 'handle_set',
+  :auth_path => 'edit'
+conf.map 'config add :value to :key',
+  :action => 'handle_add',
+  :auth_path => 'edit'
+conf.map 'config rm :value from :key',
+  :action => 'handle_rm',
+  :auth_path => 'edit'
+conf.map 'config del :value from :key',
+  :action => 'handle_rm',
+  :auth_path => 'edit'
+conf.map 'config delete :value from :key',
+  :action => 'handle_rm',
+  :auth_path => 'edit'
+conf.map 'config unset :key',
+  :action => 'handle_unset',
+  :auth_path => 'edit'
+conf.map 'config reset :key',
+  :action => 'handle_unset',
+  :auth_path => 'edit'
+
+conf.map 'config help :topic',
+  :action => 'handle_help',
+  :defaults => {:topic => false},
+  :auth_path => '!help!'
+
+conf.default_auth('*', false)
+conf.default_auth('show', true)
+conf.default_auth('show::get', false)
+# TODO these shouldn't be set here, we need a way to let the default
+# permission be specified together with the ConfigValue
+conf.default_auth('key', true)
+conf.default_auth('key::auth::password', false)
+
diff --git a/lib/rbot/irc.rb b/lib/rbot/irc.rb
index 8ef848f7..fe1aa9fa 100644
--- a/lib/rbot/irc.rb
+++ b/lib/rbot/irc.rb
@@ -1,1958 +1,1958 @@
-#-- vim:sw=2:et

-# General TODO list

-# * do we want to handle a Channel list for each User telling which

-#   Channels is the User on (of those the client is on too)?

-#   We may want this so that when a User leaves all Channels and he hasn't

-#   sent us privmsgs, we know we can remove him from the Server @users list

-# * Maybe ChannelList and UserList should be HashesOf instead of ArrayOf?

-#   See items marked as TODO Ho.

-#   The framework to do this is now in place, thanks to the new [] method

-#   for NetmaskList, which allows retrieval by Netmask or String

-#++

-# :title: IRC module

-#

-# Basic IRC stuff

-#

-# This module defines the fundamental building blocks for IRC

-#

-# Author:: Giuseppe Bilotta (giuseppe.bilotta@gmail.com)

-# Copyright:: Copyright (c) 2006 Giuseppe Bilotta

-# License:: GPLv2

-

-require 'singleton'

-

-class Object

-

-  # We extend the Object class with a method that

-  # checks if the receiver is nil or empty

-  def nil_or_empty?

-    return true unless self

-    return true if self.respond_to? :empty? and self.empty?

-    return false

-  end

-

-  # We alias the to_s method to __to_s__ to make

-  # it accessible in all classes

-  alias :__to_s__ :to_s 

-end

-

-# The Irc module is used to keep all IRC-related classes

-# in the same namespace

-#

-module Irc

-

-

-  # Due to its Scandinavian origins, IRC has strange case mappings, which

-  # consider the characters <tt>{}|^</tt> as the uppercase

-  # equivalents of # <tt>[]\~</tt>.

-  #

-  # This is however not the same on all IRC servers: some use standard ASCII

-  # casemapping, other do not consider <tt>^</tt> as the uppercase of

-  # <tt>~</tt>

-  #

-  class Casemap

-    @@casemaps = {}

-

-    # Create a new casemap with name _name_, uppercase characters _upper_ and

-    # lowercase characters _lower_

-    #

-    def initialize(name, upper, lower)

-      @key = name.to_sym

-      raise "Casemap #{name.inspect} already exists!" if @@casemaps.has_key?(@key)

-      @@casemaps[@key] = {

-        :upper => upper,

-        :lower => lower,

-        :casemap => self

-      }

-    end

-

-    # Returns the Casemap with the given name

-    #

-    def Casemap.get(name)

-      @@casemaps[name.to_sym][:casemap]

-    end

-

-    # Retrieve the 'uppercase characters' of this Casemap

-    #

-    def upper

-      @@casemaps[@key][:upper]

-    end

-

-    # Retrieve the 'lowercase characters' of this Casemap

-    #

-    def lower

-      @@casemaps[@key][:lower]

-    end

-

-    # Return a Casemap based on the receiver

-    #

-    def to_irc_casemap

-      self

-    end

-

-    # A Casemap is represented by its lower/upper mappings

-    #

-    def inspect

-      self.__to_s__[0..-2] + " #{upper.inspect} ~(#{self})~ #{lower.inspect}>"

-    end

-

-    # As a String we return our name

-    #

-    def to_s

-      @key.to_s

-    end

-

-    # Two Casemaps are equal if they have the same upper and lower ranges

-    #

-    def ==(arg)

-      other = arg.to_irc_casemap

-      return self.upper == other.upper && self.lower == other.lower

-    end

-

-    # Give a warning if _arg_ and self are not the same Casemap

-    #

-    def must_be(arg)

-      other = arg.to_irc_casemap

-      if self == other

-        return true

-      else

-        warn "Casemap mismatch (#{self.inspect} != #{other.inspect})"

-        return false

-      end

-    end

-

-  end

-

-  # The rfc1459 casemap

-  #

-  class RfcCasemap < Casemap

-    include Singleton

-

-    def initialize

-      super('rfc1459', "\x41-\x5e", "\x61-\x7e")

-    end

-

-  end

-  RfcCasemap.instance

-

-  # The strict-rfc1459 Casemap

-  #

-  class StrictRfcCasemap < Casemap

-    include Singleton

-

-    def initialize

-      super('strict-rfc1459', "\x41-\x5d", "\x61-\x7d")

-    end

-

-  end

-  StrictRfcCasemap.instance

-

-  # The ascii Casemap

-  #

-  class AsciiCasemap < Casemap

-    include Singleton

-

-    def initialize

-      super('ascii', "\x41-\x5a", "\x61-\x7a")

-    end

-

-  end

-  AsciiCasemap.instance

-

-

-  # This module is included by all classes that are either bound to a server

-  # or should have a casemap.

-  #

-  module ServerOrCasemap

-

-    attr_reader :server

-

-    # This method initializes the instance variables @server and @casemap

-    # according to the values of the hash keys :server and :casemap in _opts_

-    #

-    def init_server_or_casemap(opts={})

-      @server = opts.fetch(:server, nil)

-      raise TypeError, "#{@server} is not a valid Irc::Server" if @server and not @server.kind_of?(Server)

-

-      @casemap = opts.fetch(:casemap, nil)

-      if @server

-        if @casemap

-          @server.casemap.must_be(@casemap)

-          @casemap = nil

-        end

-      else

-        @casemap = (@casemap || 'rfc1459').to_irc_casemap

-      end

-    end

-

-    # This is an auxiliary method: it returns true if the receiver fits the

-    # server and casemap specified in _opts_, false otherwise.

-    #

-    def fits_with_server_and_casemap?(opts={})

-      srv = opts.fetch(:server, nil)

-      cmap = opts.fetch(:casemap, nil)

-      cmap = cmap.to_irc_casemap unless cmap.nil?

-

-      if srv.nil?

-        return true if cmap.nil? or cmap == casemap

-      else

-        return true if srv == @server and (cmap.nil? or cmap == casemap)

-      end

-      return false

-    end

-

-    # Returns the casemap of the receiver, by looking at the bound

-    # @server (if possible) or at the @casemap otherwise

-    #

-    def casemap

-      return @server.casemap if defined?(@server) and @server

-      return @casemap

-    end

-

-    # Returns a hash with the current @server and @casemap as values of

-    # :server and :casemap

-    #

-    def server_and_casemap

-      h = {}

-      h[:server] = @server if defined?(@server) and @server

-      h[:casemap] = @casemap if defined?(@casemap) and @casemap

-      return h

-    end

-

-    # We allow up/downcasing with a different casemap

-    #

-    def irc_downcase(cmap=casemap)

-      self.to_s.irc_downcase(cmap)

-    end

-

-    # Up/downcasing something that includes this module returns its

-    # Up/downcased to_s form

-    #

-    def downcase

-      self.irc_downcase

-    end

-

-    # We allow up/downcasing with a different casemap

-    #

-    def irc_upcase(cmap=casemap)

-      self.to_s.irc_upcase(cmap)

-    end

-

-    # Up/downcasing something that includes this module returns its

-    # Up/downcased to_s form

-    #

-    def upcase

-      self.irc_upcase

-    end

-

-  end

-

-end

-

-

-# We start by extending the String class

-# with some IRC-specific methods

-#

-class String

-

-  # This method returns the Irc::Casemap whose name is the receiver

-  #

-  def to_irc_casemap

-    Irc::Casemap.get(self) rescue raise TypeError, "Unkown Irc::Casemap #{self.inspect}"

-  end

-

-  # This method returns a string which is the downcased version of the

-  # receiver, according to the given _casemap_

-  #

-  #

-  def irc_downcase(casemap='rfc1459')

-    cmap = casemap.to_irc_casemap

-    self.tr(cmap.upper, cmap.lower)

-  end

-

-  # This is the same as the above, except that the string is altered in place

-  #

-  # See also the discussion about irc_downcase

-  #

-  def irc_downcase!(casemap='rfc1459')

-    cmap = casemap.to_irc_casemap

-    self.tr!(cmap.upper, cmap.lower)

-  end

-

-  # Upcasing functions are provided too

-  #

-  # See also the discussion about irc_downcase

-  #

-  def irc_upcase(casemap='rfc1459')

-    cmap = casemap.to_irc_casemap

-    self.tr(cmap.lower, cmap.upper)

-  end

-

-  # In-place upcasing

-  #

-  # See also the discussion about irc_downcase

-  #

-  def irc_upcase!(casemap='rfc1459')

-    cmap = casemap.to_irc_casemap

-    self.tr!(cmap.lower, cmap.upper)

-  end

-

-  # This method checks if the receiver contains IRC glob characters

-  #

-  # IRC has a very primitive concept of globs: a <tt>*</tt> stands for "any

-  # number of arbitrary characters", a <tt>?</tt> stands for "one and exactly

-  # one arbitrary character". These characters can be escaped by prefixing them

-  # with a slash (<tt>\\</tt>).

-  #

-  # A known limitation of this glob syntax is that there is no way to escape

-  # the escape character itself, so it's not possible to build a glob pattern

-  # where the escape character precedes a glob.

-  #

-  def has_irc_glob?

-    self =~ /^[*?]|[^\\][*?]/

-  end

-

-  # This method is used to convert the receiver into a Regular Expression

-  # that matches according to the IRC glob syntax

-  #

-  def to_irc_regexp

-    regmask = Regexp.escape(self)

-    regmask.gsub!(/(\\\\)?\\[*?]/) { |m|

-      case m

-      when /\\(\\[*?])/

-        $1

-      when /\\\*/

-        '.*'

-      when /\\\?/

-        '.'

-      else

-        raise "Unexpected match #{m} when converting #{self}"

-      end

-    }

-    Regexp.new("^#{regmask}$")

-  end

-

-end

-

-

-# ArrayOf is a subclass of Array whose elements are supposed to be all

-# of the same class. This is not intended to be used directly, but rather

-# to be subclassed as needed (see for example Irc::UserList and Irc::NetmaskList)

-#

-# Presently, only very few selected methods from Array are overloaded to check

-# if the new elements are the correct class. An orthodox? method is provided

-# to check the entire ArrayOf against the appropriate class.

-#

-class ArrayOf < Array

-

-  attr_reader :element_class

-

-  # Create a new ArrayOf whose elements are supposed to be all of type _kl_,

-  # optionally filling it with the elements from the Array argument.

-  #

-  def initialize(kl, ar=[])

-    raise TypeError, "#{kl.inspect} must be a class name" unless kl.kind_of?(Class)

-    super()

-    @element_class = kl

-    case ar

-    when Array

-      insert(0, *ar)

-    else

-      raise TypeError, "#{self.class} can only be initialized from an Array"

-    end

-  end

-

-  def inspect

-    self.__to_s__[0..-2].sub(/:[^:]+$/,"[#{@element_class}]\\0") + " #{super}>"

-  end

-

-  # Private method to check the validity of the elements passed to it

-  # and optionally raise an error

-  #

-  # TODO should it accept nils as valid?

-  #

-  def internal_will_accept?(raising, *els)

-    els.each { |el|

-      unless el.kind_of?(@element_class)

-        raise TypeError, "#{el.inspect} is not of class #{@element_class}" if raising

-        return false

-      end

-    }

-    return true

-  end

-  private :internal_will_accept?

-

-  # This method checks if the passed arguments are acceptable for our ArrayOf

-  #

-  def will_accept?(*els)

-    internal_will_accept?(false, *els)

-  end

-

-  # This method checks that all elements are of the appropriate class

-  #

-  def valid?

-    will_accept?(*self)

-  end

-

-  # This method is similar to the above, except that it raises an exception

-  # if the receiver is not valid

-  #

-  def validate

-    raise TypeError unless valid?

-  end

-

-  # Overloaded from Array#<<, checks for appropriate class of argument

-  #

-  def <<(el)

-    super(el) if internal_will_accept?(true, el)

-  end

-

-  # Overloaded from Array#&, checks for appropriate class of argument elements

-  #

-  def &(ar)

-    r = super(ar)

-    ArrayOf.new(@element_class, r) if internal_will_accept?(true, *r)

-  end

-

-  # Overloaded from Array#+, checks for appropriate class of argument elements

-  #

-  def +(ar)

-    ArrayOf.new(@element_class, super(ar)) if internal_will_accept?(true, *ar)

-  end

-

-  # Overloaded from Array#-, so that an ArrayOf is returned. There is no need

-  # to check the validity of the elements in the argument

-  #

-  def -(ar)

-    ArrayOf.new(@element_class, super(ar)) # if internal_will_accept?(true, *ar)

-  end

-

-  # Overloaded from Array#|, checks for appropriate class of argument elements

-  #

-  def |(ar)

-    ArrayOf.new(@element_class, super(ar)) if internal_will_accept?(true, *ar)

-  end

-

-  # Overloaded from Array#concat, checks for appropriate class of argument

-  # elements

-  #

-  def concat(ar)

-    super(ar) if internal_will_accept?(true, *ar)

-  end

-

-  # Overloaded from Array#insert, checks for appropriate class of argument

-  # elements

-  #

-  def insert(idx, *ar)

-    super(idx, *ar) if internal_will_accept?(true, *ar)

-  end

-

-  # Overloaded from Array#replace, checks for appropriate class of argument

-  # elements

-  #

-  def replace(ar)

-    super(ar) if (ar.kind_of?(ArrayOf) && ar.element_class <= @element_class) or internal_will_accept?(true, *ar)

-  end

-

-  # Overloaded from Array#push, checks for appropriate class of argument

-  # elements

-  #

-  def push(*ar)

-    super(*ar) if internal_will_accept?(true, *ar)

-  end

-

-  # Overloaded from Array#unshift, checks for appropriate class of argument(s)

-  #

-  def unshift(*els)

-    els.each { |el|

-      super(el) if internal_will_accept?(true, *els)

-    }

-  end

-

-  # We introduce the 'downcase' method, which maps downcase() to all the Array

-  # elements, properly failing when the elements don't have a downcase method

-  #

-  def downcase

-    self.map { |el| el.downcase }

-  end

-

-  # Modifying methods which we don't handle yet are made private

-  #

-  private :[]=, :collect!, :map!, :fill, :flatten!

-

-end

-

-

-# We extend the Regexp class with an Irc module which will contain some

-# Irc-specific regexps

-#

-class Regexp

-

-  # We start with some general-purpose ones which will be used in the

-  # Irc module too, but are useful regardless

-  DIGITS = /\d+/

-  HEX_DIGIT = /[0-9A-Fa-f]/

-  HEX_DIGITS = /#{HEX_DIGIT}+/

-  HEX_OCTET = /#{HEX_DIGIT}#{HEX_DIGIT}?/

-  DEC_OCTET = /[01]?\d?\d|2[0-4]\d|25[0-5]/

-  DEC_IP_ADDR = /#{DEC_OCTET}.#{DEC_OCTET}.#{DEC_OCTET}.#{DEC_OCTET}/

-  HEX_IP_ADDR = /#{HEX_OCTET}.#{HEX_OCTET}.#{HEX_OCTET}.#{HEX_OCTET}/

-  IP_ADDR = /#{DEC_IP_ADDR}|#{HEX_IP_ADDR}/

-

-  # IPv6, from Resolv::IPv6, without the \A..\z anchors

-  HEX_16BIT = /#{HEX_DIGIT}{1,4}/

-  IP6_8Hex = /(?:#{HEX_16BIT}:){7}#{HEX_16BIT}/

-  IP6_CompressedHex = /((?:#{HEX_16BIT}(?::#{HEX_16BIT})*)?)::((?:#{HEX_16BIT}(?::#{HEX_16BIT})*)?)/

-  IP6_6Hex4Dec = /((?:#{HEX_16BIT}:){6,6})#{DEC_IP_ADDR}/

-  IP6_CompressedHex4Dec = /((?:#{HEX_16BIT}(?::#{HEX_16BIT})*)?)::((?:#{HEX_16BIT}:)*)#{DEC_IP_ADDR}/

-  IP6_ADDR = /(?:#{IP6_8Hex})|(?:#{IP6_CompressedHex})|(?:#{IP6_6Hex4Dec})|(?:#{IP6_CompressedHex4Dec})/

-

-  # We start with some IRC related regular expressions, used to match

-  # Irc::User nicks and users and Irc::Channel names

-  #

-  # For each of them we define two versions of the regular expression:

-  # * a generic one, which should match for any server but may turn out to

-  #   match more than a specific server would accept

-  # * an RFC-compliant matcher

-  #

-  module Irc

-

-    # Channel-name-matching regexps

-    CHAN_FIRST = /[#&+]/

-    CHAN_SAFE = /![A-Z0-9]{5}/

-    CHAN_ANY = /[^\x00\x07\x0A\x0D ,:]/

-    GEN_CHAN = /(?:#{CHAN_FIRST}|#{CHAN_SAFE})#{CHAN_ANY}+/

-    RFC_CHAN = /#{CHAN_FIRST}#{CHAN_ANY}{1,49}|#{CHAN_SAFE}#{CHAN_ANY}{1,44}/

-

-    # Nick-matching regexps

-    SPECIAL_CHAR = /[\x5b-\x60\x7b-\x7d]/

-    NICK_FIRST = /#{SPECIAL_CHAR}|[[:alpha:]]/

-    NICK_ANY = /#{SPECIAL_CHAR}|[[:alnum:]]|-/

-    GEN_NICK = /#{NICK_FIRST}#{NICK_ANY}+/

-    RFC_NICK = /#{NICK_FIRST}#{NICK_ANY}{0,8}/

-

-    USER_CHAR = /[^\x00\x0a\x0d @]/

-    GEN_USER = /#{USER_CHAR}+/

-

-    # Host-matching regexps

-    HOSTNAME_COMPONENT = /[[:alnum:]](?:[[:alnum:]]|-)*[[:alnum:]]*/

-    HOSTNAME = /#{HOSTNAME_COMPONENT}(?:\.#{HOSTNAME_COMPONENT})*/

-    HOSTADDR = /#{IP_ADDR}|#{IP6_ADDR}/

-

-    GEN_HOST = /#{HOSTNAME}|#{HOSTADDR}/

-

-    # # FreeNode network replaces the host of affiliated users with

-    # # 'virtual hosts' 

-    # # FIXME we need the true syntax to match it properly ...

-    # PDPC_HOST_PART = /[0-9A-Za-z.-]+/

-    # PDPC_HOST = /#{PDPC_HOST_PART}(?:\/#{PDPC_HOST_PART})+/

-

-    # # NOTE: the final optional and non-greedy dot is needed because some

-    # # servers (e.g. FreeNode) send the hostname of the services as "services."

-    # # which is not RFC compliant, but sadly done.

-    # GEN_HOST_EXT = /#{PDPC_HOST}|#{GEN_HOST}\.??/ 

-

-    # Sadly, different networks have different, RFC-breaking ways of cloaking

-    # the actualy host address: see above for an example to handle FreeNode.

-    # Another example would be Azzurra, wich also inserts a "=" in the

-    # cloacked host. So let's just not care about this and go with the simplest

-    # thing:

-    GEN_HOST_EXT = /\S+/

-

-    # User-matching Regexp

-    GEN_USER_ID = /(#{GEN_NICK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/

-

-    # Things such has the BIP proxy send invalid nicks in a complete netmask,

-    # so we want to match this, rather: this matches either a compliant nick

-    # or a a string with a very generic nick, a very generic hostname after an

-    # @ sign, and an optional user after a !

-    BANG_AT = /#{GEN_NICK}|\S+?(?:!\S+?)?@\S+?/

-

-    # # For Netmask, we want to allow wildcards * and ? in the nick

-    # # (they are already allowed in the user and host part

-    # GEN_NICK_MASK = /(?:#{NICK_FIRST}|[?*])?(?:#{NICK_ANY}|[?*])+/

-

-    # # Netmask-matching Regexp

-    # GEN_MASK = /(#{GEN_NICK_MASK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/

-

-  end

-

-end

-

-

-module Irc

-

-

-  # A Netmask identifies each user by collecting its nick, username and

-  # hostname in the form <tt>nick!user@host</tt>

-  #

-  # Netmasks can also contain glob patterns in any of their components; in

-  # this form they are used to refer to more than a user or to a user

-  # appearing under different forms.

-  #

-  # Example:

-  # * <tt>*!*@*</tt> refers to everybody

-  # * <tt>*!someuser@somehost</tt> refers to user +someuser+ on host +somehost+

-  #   regardless of the nick used.

-  #

-  class Netmask

-

-    # Netmasks have an associated casemap unless they are bound to a server

-    #

-    include ServerOrCasemap

-

-    attr_reader :nick, :user, :host

-    alias :ident :user

-

-    # Create a new Netmask from string _str_, which must be in the form

-    # _nick_!_user_@_host_

-    #

-    # It is possible to specify a server or a casemap in the optional Hash:

-    # these are used to associate the Netmask with the given server and to set

-    # its casemap: if a server is specified and a casemap is not, the server's

-    # casemap is used. If both a server and a casemap are specified, the

-    # casemap must match the server's casemap or an exception will be raised.

-    #

-    # Empty +nick+, +user+ or +host+ are converted to the generic glob pattern

-    #

-    def initialize(str="", opts={})

-      # First of all, check for server/casemap option

-      #

-      init_server_or_casemap(opts)

-

-      # Now we can see if the given string _str_ is an actual Netmask

-      if str.respond_to?(:to_str)

-        case str.to_str

-          # We match a pretty generic string, to work around non-compliant

-          # servers

-        when /^(?:(\S+?)(?:(?:!(\S+?))?@(\S+))?)?$/

-          # We do assignment using our internal methods

-          self.nick = $1

-          self.user = $2

-          self.host = $3

-        else

-          raise ArgumentError, "#{str.to_str.inspect} does not represent a valid #{self.class}"

-        end

-      else

-        raise TypeError, "#{str} cannot be converted to a #{self.class}"

-      end

-    end

-

-    # A Netmask is easily converted to a String for the usual representation.

-    # We skip the user or host parts if they are "*", unless we've been asked

-    # for the full form

-    #

-    def to_s

-      ret = nick.dup

-      ret << "!" << user unless user == "*"

-      ret << "@" << host unless host == "*"

-      return ret

-    end

-

-    def fullform

-      "#{nick}!#{user}@#{host}"

-    end

-

-    alias :to_str :fullform

-

-    # This method downcases the fullform of the netmask. While this may not be

-    # significantly different from the #downcase() method provided by the

-    # ServerOrCasemap mixin, it's significantly different for Netmask

-    # subclasses such as User whose simple downcasing uses the nick only.

-    #

-    def full_irc_downcase(cmap=casemap)

-      self.fullform.irc_downcase(cmap)

-    end

-

-    # full_downcase() will return the fullform downcased according to the

-    # User's own casemap

-    #

-    def full_downcase

-      self.full_irc_downcase

-    end

-

-    # This method returns a new Netmask which is the fully downcased version

-    # of the receiver

-    def downcased

-      return self.full_downcase.to_irc_netmask(server_and_casemap)

-    end

-

-    # Converts the receiver into a Netmask with the given (optional)

-    # server/casemap association. We return self unless a conversion

-    # is needed (different casemap/server)

-    #

-    # Subclasses of Netmask will return a new Netmask, using full_downcase

-    #

-    def to_irc_netmask(opts={})

-      if self.class == Netmask

-        return self if fits_with_server_and_casemap?(opts)

-      end

-      return self.full_downcase.to_irc_netmask(server_and_casemap.merge(opts))

-    end

-

-    # Converts the receiver into a User with the given (optional)

-    # server/casemap association. We return self unless a conversion

-    # is needed (different casemap/server)

-    #

-    def to_irc_user(opts={})

-      self.fullform.to_irc_user(server_and_casemap.merge(opts))

-    end

-

-    # Inspection of a Netmask reveals the server it's bound to (if there is

-    # one), its casemap and the nick, user and host part

-    #

-    def inspect

-      str = self.__to_s__[0..-2]

-      str << " @server=#{@server}" if defined?(@server) and @server

-      str << " @nick=#{@nick.inspect} @user=#{@user.inspect}"

-      str << " @host=#{@host.inspect} casemap=#{casemap.inspect}"

-      str << ">"

-    end

-

-    # Equality: two Netmasks are equal if they downcase to the same thing

-    #

-    # TODO we may want it to try other.to_irc_netmask

-    #

-    def ==(other)

-      return false unless other.kind_of?(self.class)

-      self.downcase == other.downcase

-    end

-

-    # This method changes the nick of the Netmask, defaulting to the generic

-    # glob pattern if the result is the null string.

-    #

-    def nick=(newnick)

-      @nick = newnick.to_s

-      @nick = "*" if @nick.empty?

-    end

-

-    # This method changes the user of the Netmask, defaulting to the generic

-    # glob pattern if the result is the null string.

-    #

-    def user=(newuser)

-      @user = newuser.to_s

-      @user = "*" if @user.empty?

-    end

-    alias :ident= :user=

-

-    # This method changes the hostname of the Netmask, defaulting to the generic

-    # glob pattern if the result is the null string.

-    #

-    def host=(newhost)

-      @host = newhost.to_s

-      @host = "*" if @host.empty?

-    end

-

-    # We can replace everything at once with data from another Netmask

-    #

-    def replace(other)

-      case other

-      when Netmask

-        nick = other.nick

-        user = other.user

-        host = other.host

-        @server = other.server

-        @casemap = other.casemap unless @server

-      else

-        replace(other.to_irc_netmask(server_and_casemap))

-      end

-    end

-

-    # This method checks if a Netmask is definite or not, by seeing if

-    # any of its components are defined by globs

-    #

-    def has_irc_glob?

-      return @nick.has_irc_glob? || @user.has_irc_glob? || @host.has_irc_glob?

-    end

-

-    def generalize

-      u = user.dup

-      unless u.has_irc_glob?

-        u.sub!(/^[in]=/, '=') or u.sub!(/^\W(\w+)/, '\1')

-        u = '*' + u

-      end

-

-      h = host.dup

-      unless h.has_irc_glob?

-        if h.include? '/'

-          h.sub!(/x-\w+$/, 'x-*')

-        else

-          h.match(/^[^\.]+\.[^\.]+$/) or

-          h.sub!(/azzurra[=-][0-9a-f]+/i, '*') or # hello, azzurra, you suck!

-          h.sub!(/^(\d+\.\d+\.\d+\.)\d+$/, '\1*') or

-          h.sub!(/^[^\.]+\./, '*.')

-        end

-      end

-      return Netmask.new("*!#{u}@#{h}", server_and_casemap)

-    end

-

-    # This method is used to match the current Netmask against another one

-    #

-    # The method returns true if each component of the receiver matches the

-    # corresponding component of the argument. By _matching_ here we mean

-    # that any netmask described by the receiver is also described by the

-    # argument.

-    #

-    # In this sense, matching is rather simple to define in the case when the

-    # receiver has no globs: it is just necessary to check if the argument

-    # describes the receiver, which can be done by matching it against the

-    # argument converted into an IRC Regexp (see String#to_irc_regexp).

-    #

-    # The situation is also easy when the receiver has globs and the argument

-    # doesn't, since in this case the result is false.

-    #

-    # The more complex case in which both the receiver and the argument have

-    # globs is not handled yet.

-    #

-    def matches?(arg)

-      cmp = arg.to_irc_netmask(:casemap => casemap)

-      debug "Matching #{self.fullform} against #{arg.inspect} (#{cmp.fullform})"

-      [:nick, :user, :host].each { |component|

-        us = self.send(component).irc_downcase(casemap)

-        them = cmp.send(component).irc_downcase(casemap)

-        if us.has_irc_glob? && them.has_irc_glob?

-          next if us == them

-          warn NotImplementedError

-          return false

-        end

-        return false if us.has_irc_glob? && !them.has_irc_glob?

-        return false unless us =~ them.to_irc_regexp

-      }

-      return true

-    end

-

-    # Case equality. Checks if arg matches self

-    #

-    def ===(arg)

-      arg.to_irc_netmask(:casemap => casemap).matches?(self)

-    end

-

-    # Sorting is done via the fullform

-    #

-    def <=>(arg)

-      case arg

-      when Netmask

-        self.fullform.irc_downcase(casemap) <=> arg.fullform.irc_downcase(casemap)

-      else

-        self.downcase <=> arg.downcase

-      end

-    end

-

-  end

-

-

-  # A NetmaskList is an ArrayOf <code>Netmask</code>s

-  #

-  class NetmaskList < ArrayOf

-

-    # Create a new NetmaskList, optionally filling it with the elements from

-    # the Array argument fed to it.

-    #

-    def initialize(ar=[])

-      super(Netmask, ar)

-    end

-

-    # We enhance the [] method by allowing it to pick an element that matches

-    # a given Netmask, a String or a Regexp

-    # TODO take into consideration the opportunity to use select() instead of

-    # find(), and/or a way to let the user choose which one to take (second

-    # argument?)

-    #

-    def [](*args)

-      if args.length == 1

-        case args[0]

-        when Netmask

-          self.find { |mask|

-            mask.matches?(args[0])

-          }

-        when String

-          self.find { |mask|

-            mask.matches?(args[0].to_irc_netmask(:casemap => mask.casemap))

-          }

-        when Regexp

-          self.find { |mask|

-            mask.fullform =~ args[0]

-          }

-        else

-          super(*args)

-        end

-      else

-        super(*args)

-      end

-    end

-

-  end

-

-end

-

-

-class String

-

-  # We keep extending String, this time adding a method that converts a

-  # String into an Irc::Netmask object

-  #

-  def to_irc_netmask(opts={})

-    Irc::Netmask.new(self, opts)

-  end

-

-end

-

-

-module Irc

-

-

-  # An IRC User is identified by his/her Netmask (which must not have globs).

-  # In fact, User is just a subclass of Netmask.

-  #

-  # Ideally, the user and host information of an IRC User should never

-  # change, and it shouldn't contain glob patterns. However, IRC is somewhat

-  # idiosincratic and it may be possible to know the nick of a User much before

-  # its user and host are known. Moreover, some networks (namely Freenode) may

-  # change the hostname of a User when (s)he identifies with Nickserv.

-  #

-  # As a consequence, we must allow changes to a User host and user attributes.

-  # We impose a restriction, though: they may not contain glob patterns, except

-  # for the special case of an unknown user/host which is represented by a *.

-  #

-  # It is possible to create a totally unknown User (e.g. for initializations)

-  # by setting the nick to * too.

-  #

-  # TODO list:

-  # * see if it's worth to add the other USER data

-  # * see if it's worth to add NICKSERV status

-  #

-  class User < Netmask

-    alias :to_s :nick

-

-    attr_accessor :real_name

-

-    # Create a new IRC User from a given Netmask (or anything that can be converted

-    # into a Netmask) provided that the given Netmask does not have globs.

-    #

-    def initialize(str="", opts={})

-      super

-      raise ArgumentError, "#{str.inspect} must not have globs (unescaped * or ?)" if nick.has_irc_glob? && nick != "*"

-      raise ArgumentError, "#{str.inspect} must not have globs (unescaped * or ?)" if user.has_irc_glob? && user != "*"

-      raise ArgumentError, "#{str.inspect} must not have globs (unescaped * or ?)" if host.has_irc_glob? && host != "*"

-      @away = false

-      @real_name = String.new

-    end

-

-    # The nick of a User may be changed freely, but it must not contain glob patterns.

-    #

-    def nick=(newnick)

-      raise "Can't change the nick to #{newnick}" if defined?(@nick) and newnick.has_irc_glob?

-      super

-    end

-

-    # We have to allow changing the user of an Irc User due to some networks

-    # (e.g. Freenode) changing hostmasks on the fly. We still check if the new

-    # user data has glob patterns though.

-    #

-    def user=(newuser)

-      raise "Can't change the username to #{newuser}" if defined?(@user) and newuser.has_irc_glob?

-      super

-    end

-

-    # We have to allow changing the host of an Irc User due to some networks

-    # (e.g. Freenode) changing hostmasks on the fly. We still check if the new

-    # host data has glob patterns though.

-    #

-    def host=(newhost)

-      raise "Can't change the hostname to #{newhost}" if defined?(@host) and newhost.has_irc_glob?

-      super

-    end

-

-    # Checks if a User is well-known or not by looking at the hostname and user

-    #

-    def known?

-      return nick != "*" && user != "*" && host != "*"

-    end

-

-    # Is the user away?

-    #

-    def away?

-      return @away

-    end

-

-    # Set the away status of the user. Use away=(nil) or away=(false)

-    # to unset away

-    #

-    def away=(msg="")

-      if msg

-        @away = msg

-      else

-        @away = false

-      end

-    end

-

-    # Since to_irc_user runs the same checks on server and channel as

-    # to_irc_netmask, we just try that and return self if it works.

-    #

-    # Subclasses of User will return self if possible.

-    #

-    def to_irc_user(opts={})

-      return self if fits_with_server_and_casemap?(opts)

-      return self.full_downcase.to_irc_user(opts)

-    end

-

-    # We can replace everything at once with data from another User

-    #

-    def replace(other)

-      case other

-      when User

-        self.nick = other.nick

-        self.user = other.user

-        self.host = other.host

-        @server = other.server

-        @casemap = other.casemap unless @server

-        @away = other.away?

-      else

-        self.replace(other.to_irc_user(server_and_casemap))

-      end

-    end

-

-    def modes_on(channel)

-      case channel

-      when Channel

-        channel.modes_of(self)

-      else

-        return @server.channel(channel).modes_of(self) if @server

-        raise "Can't resolve channel #{channel}"

-      end

-    end

-

-    def is_op?(channel)

-      case channel

-      when Channel

-        channel.has_op?(self)

-      else

-        return @server.channel(channel).has_op?(self) if @server

-        raise "Can't resolve channel #{channel}"

-      end

-    end

-

-    def is_voice?(channel)

-      case channel

-      when Channel

-        channel.has_voice?(self)

-      else

-        return @server.channel(channel).has_voice?(self) if @server

-        raise "Can't resolve channel #{channel}"

-      end

-    end

-  end

-

-

-  # A UserList is an ArrayOf <code>User</code>s

-  # We derive it from NetmaskList, which allows us to inherit any special

-  # NetmaskList method

-  #

-  class UserList < NetmaskList

-

-    # Create a new UserList, optionally filling it with the elements from

-    # the Array argument fed to it.

-    #

-    def initialize(ar=[])

-      super(ar)

-      @element_class = User

-    end

-

-    # Convenience method: convert the UserList to a list of nicks. The indices

-    # are preserved

-    #

-    def nicks

-      self.map { |user| user.nick }

-    end

-

-  end

-

-end

-

-class String

-

-  # We keep extending String, this time adding a method that converts a

-  # String into an Irc::User object

-  #

-  def to_irc_user(opts={})

-    Irc::User.new(self, opts)

-  end

-

-end

-

-module Irc

-

-  # An IRC Channel is identified by its name, and it has a set of properties:

-  # * a Channel::Topic

-  # * a UserList

-  # * a set of Channel::Modes

-  #

-  # The Channel::Topic and Channel::Mode classes are defined within the

-  # Channel namespace because they only make sense there

-  #

-  class Channel

-

-

-    # Mode on a Channel

-    #

-    class Mode

-      attr_reader :channel

-      def initialize(ch)

-        @channel = ch

-      end

-

-    end

-

-

-    # Channel modes of type A manipulate lists

-    #

-    # Example: b (banlist)

-    #

-    class ModeTypeA < Mode

-      attr_reader :list

-      def initialize(ch)

-        super

-        @list = NetmaskList.new

-      end

-

-      def set(val)

-        nm = @channel.server.new_netmask(val)

-        @list << nm unless @list.include?(nm)

-      end

-

-      def reset(val)

-        nm = @channel.server.new_netmask(val)

-        @list.delete(nm)

-      end

-

-    end

-

-

-    # Channel modes of type B need an argument

-    #

-    # Example: k (key)

-    #

-    class ModeTypeB < Mode

-      def initialize(ch)

-        super

-        @arg = nil

-      end

-

-      def status

-        @arg

-      end

-      alias :value :status

-

-      def set(val)

-        @arg = val

-      end

-

-      def reset(val)

-        @arg = nil if @arg == val

-      end

-

-    end

-

-

-    # Channel modes that change the User prefixes are like

-    # Channel modes of type B, except that they manipulate

-    # lists of Users, so they are somewhat similar to channel

-    # modes of type A

-    #

-    class UserMode < ModeTypeB

-      attr_reader :list

-      alias :users :list

-      def initialize(ch)

-        super

-        @list = UserList.new

-      end

-

-      def set(val)

-        u = @channel.server.user(val)

-        @list << u unless @list.include?(u)

-      end

-

-      def reset(val)

-        u = @channel.server.user(val)

-        @list.delete(u)

-      end

-

-    end

-

-

-    # Channel modes of type C need an argument when set,

-    # but not when they get reset

-    #

-    # Example: l (limit)

-    #

-    class ModeTypeC < Mode

-      def initialize(ch)

-        super

-        @arg = nil

-      end

-

-      def status

-        @arg

-      end

-      alias :value :status

-

-      def set(val)

-        @arg = val

-      end

-

-      def reset

-        @arg = nil

-      end

-

-    end

-

-

-    # Channel modes of type D are basically booleans

-    #

-    # Example: m (moderate)

-    #

-    class ModeTypeD < Mode

-      def initialize(ch)

-        super

-        @set = false

-      end

-

-      def set?

-        return @set

-      end

-

-      def set

-        @set = true

-      end

-

-      def reset

-        @set = false

-      end

-

-    end

-

-

-    # A Topic represents the topic of a channel. It consists of

-    # the topic itself, who set it and when

-    #

-    class Topic

-      attr_accessor :text, :set_by, :set_on

-      alias :to_s :text

-

-      # Create a new Topic setting the text, the creator and

-      # the creation time

-      #

-      def initialize(text="", set_by="", set_on=Time.new)

-        @text = text

-        @set_by = set_by.to_irc_netmask

-        @set_on = set_on

-      end

-

-      # Replace a Topic with another one

-      #

-      def replace(topic)

-        raise TypeError, "#{topic.inspect} is not of class #{self.class}" unless topic.kind_of?(self.class)

-        @text = topic.text.dup

-        @set_by = topic.set_by.dup

-        @set_on = topic.set_on.dup

-      end

-

-      # Returns self

-      #

-      def to_irc_channel_topic

-        self

-      end

-

-    end

-

-  end

-

-end

-

-

-class String

-

-  # Returns an Irc::Channel::Topic with self as text

-  #

-  def to_irc_channel_topic

-    Irc::Channel::Topic.new(self)

-  end

-

-end

-

-

-module Irc

-

-

-  # Here we start with the actual Channel class

-  #

-  class Channel

-

-    include ServerOrCasemap

-    attr_reader :name, :topic, :mode, :users

-    alias :to_s :name

-

-    def inspect

-      str = self.__to_s__[0..-2]

-      str << " on server #{server}" if server

-      str << " @name=#{@name.inspect} @topic=#{@topic.text.inspect}"

-      str << " @users=[#{user_nicks.sort.join(', ')}]"

-      str << ">"

-    end

-

-    # Returns self

-    #

-    def to_irc_channel

-      self

-    end

-

-    # TODO Ho

-    def user_nicks

-      @users.map { |u| u.downcase }

-    end

-

-    # Checks if the receiver already has a user with the given _nick_

-    #

-    def has_user?(nick)

-      @users.index(nick.to_irc_user(server_and_casemap))

-    end

-

-    # Returns the user with nick _nick_, if available

-    #

-    def get_user(nick)

-      idx = has_user?(nick)

-      @users[idx] if idx

-    end

-

-    # Adds a user to the channel

-    #

-    def add_user(user, opts={})

-      silent = opts.fetch(:silent, false) 

-      if has_user?(user)

-        warn "Trying to add user #{user} to channel #{self} again" unless silent

-      else

-        @users << user.to_irc_user(server_and_casemap)

-      end

-    end

-

-    # Creates a new channel with the given name, optionally setting the topic

-    # and an initial users list.

-    #

-    # No additional info is created here, because the channel flags and userlists

-    # allowed depend on the server.

-    #

-    def initialize(name, topic=nil, users=[], opts={})

-      raise ArgumentError, "Channel name cannot be empty" if name.to_s.empty?

-      warn "Unknown channel prefix #{name[0].chr}" if name !~ /^[&#+!]/

-      raise ArgumentError, "Invalid character in #{name.inspect}" if name =~ /[ \x07,]/

-

-      init_server_or_casemap(opts)

-

-      @name = name

-

-      @topic = topic ? topic.to_irc_channel_topic : Channel::Topic.new

-

-      @users = UserList.new

-

-      users.each { |u|

-        add_user(u)

-      }

-

-      # Flags

-      @mode = {}

-    end

-

-    # Removes a user from the channel

-    #

-    def delete_user(user)

-      @mode.each { |sym, mode|

-        mode.reset(user) if mode.kind_of?(UserMode)

-      }

-      @users.delete(user)

-    end

-

-    # The channel prefix

-    #

-    def prefix

-      name[0].chr

-    end

-

-    # A channel is local to a server if it has the '&' prefix

-    #

-    def local?

-      name[0] == 0x26

-    end

-

-    # A channel is modeless if it has the '+' prefix

-    #

-    def modeless?

-      name[0] == 0x2b

-    end

-

-    # A channel is safe if it has the '!' prefix

-    #

-    def safe?

-      name[0] == 0x21

-    end

-

-    # A channel is normal if it has the '#' prefix

-    #

-    def normal?

-      name[0] == 0x23

-    end

-

-    # Create a new mode

-    #

-    def create_mode(sym, kl)

-      @mode[sym.to_sym] = kl.new(self)

-    end

-

-    def modes_of(user)

-      l = []

-      @mode.map { |s, m|

-        l << s if (m.class <= UserMode and m.list[user])

-      }

-      l

-    end

-

-    def has_op?(user)

-      @mode.has_key?(:o) and @mode[:o].list[user]

-    end

-

-    def has_voice?(user)

-      @mode.has_key?(:v) and @mode[:v].list[user]

-    end

-  end

-

-

-  # A ChannelList is an ArrayOf <code>Channel</code>s

-  #

-  class ChannelList < ArrayOf

-

-    # Create a new ChannelList, optionally filling it with the elements from

-    # the Array argument fed to it.

-    #

-    def initialize(ar=[])

-      super(Channel, ar)

-    end

-

-    # Convenience method: convert the ChannelList to a list of channel names.

-    # The indices are preserved

-    #

-    def names

-      self.map { |chan| chan.name }

-    end

-

-  end

-

-end

-

-

-class String

-

-  # We keep extending String, this time adding a method that converts a

-  # String into an Irc::Channel object

-  #

-  def to_irc_channel(opts={})

-    Irc::Channel.new(self, opts)

-  end

-

-end

-

-

-module Irc

-

-

-  # An IRC Server represents the Server the client is connected to.

-  #

-  class Server

-

-    attr_reader :hostname, :version, :usermodes, :chanmodes

-    alias :to_s :hostname

-    attr_reader :supports, :capabilities

-

-    attr_reader :channels, :users

-

-    # TODO Ho

-    def channel_names

-      @channels.map { |ch| ch.downcase }

-    end

-

-    # TODO Ho

-    def user_nicks

-      @users.map { |u| u.downcase }

-    end

-

-    def inspect

-      chans, users = [@channels, @users].map {|d|

-        d.sort { |a, b|

-          a.downcase <=> b.downcase

-        }.map { |x|

-          x.inspect

-        }

-      }

-

-      str = self.__to_s__[0..-2]

-      str << " @hostname=#{hostname}"

-      str << " @channels=#{chans}"

-      str << " @users=#{users}"

-      str << ">"

-    end

-

-    # Create a new Server, with all instance variables reset to nil (for

-    # scalar variables), empty channel and user lists and @supports

-    # initialized to the default values for all known supported features.

-    #

-    def initialize

-      @hostname = @version = @usermodes = @chanmodes = nil

-

-      @channels = ChannelList.new

-

-      @users = UserList.new

-

-      reset_capabilities

-    end

-

-    # Resets the server capabilities

-    #

-    def reset_capabilities

-      @supports = {

-        :casemapping => 'rfc1459'.to_irc_casemap,

-        :chanlimit => {},

-        :chanmodes => {

-          :typea => nil, # Type A: address lists

-          :typeb => nil, # Type B: needs a parameter

-          :typec => nil, # Type C: needs a parameter when set

-          :typed => nil  # Type D: must not have a parameter

-        },

-        :channellen => 50,

-        :chantypes => "#&!+",

-        :excepts => nil,

-        :idchan => {},

-        :invex => nil,

-        :kicklen => nil,

-        :maxlist => {},

-        :modes => 3,

-        :network => nil,

-        :nicklen => 9,

-        :prefix => {

-          :modes => [:o, :v],

-          :prefixes => [:"@", :+]

-        },

-        :safelist => nil,

-        :statusmsg => nil,

-        :std => nil,

-        :targmax => {},

-        :topiclen => nil

-      }

-      @capabilities = {}

-    end

-

-    # Convert a mode (o, v, h, ...) to the corresponding

-    # prefix (@, +, %, ...). See also mode_for_prefix

-    def prefix_for_mode(mode)

-      return @supports[:prefix][:prefixes][

-        @supports[:prefix][:modes].index(mode.to_sym)

-      ]

-    end

-

-    # Convert a prefix (@, +, %, ...) to the corresponding

-    # mode (o, v, h, ...). See also prefix_for_mode

-    def mode_for_prefix(pfx)

-      return @supports[:prefix][:modes][

-        @supports[:prefix][:prefixes].index(pfx.to_sym)

-      ]

-    end

-

-    # Resets the Channel and User list

-    #

-    def reset_lists

-      @users.reverse_each { |u|

-        delete_user(u)

-      }

-      @channels.reverse_each { |u|

-        delete_channel(u)

-      }

-    end

-

-    # Clears the server

-    #

-    def clear

-      reset_lists

-      reset_capabilities

-      @hostname = @version = @usermodes = @chanmodes = nil

-    end

-

-    # This method is used to parse a 004 RPL_MY_INFO line

-    #

-    def parse_my_info(line)

-      ar = line.split(' ')

-      @hostname = ar[0]

-      @version = ar[1]

-      @usermodes = ar[2]

-      @chanmodes = ar[3]

-    end

-

-    def noval_warn(key, val, &block)

-      if val

-        yield if block_given?

-      else

-        warn "No #{key.to_s.upcase} value"

-      end

-    end

-

-    def val_warn(key, val, &block)

-      if val == true or val == false or val.nil?

-        yield if block_given?

-      else

-        warn "No #{key.to_s.upcase} value must be specified, got #{val}"

-      end

-    end

-    private :noval_warn, :val_warn

-

-    # This method is used to parse a 005 RPL_ISUPPORT line

-    #

-    # See the RPL_ISUPPORT draft[http://www.irc.org/tech_docs/draft-brocklesby-irc-isupport-03.txt]

-    #

-    def parse_isupport(line)

-      debug "Parsing ISUPPORT #{line.inspect}"

-      ar = line.split(' ')

-      reparse = ""

-      ar.each { |en|

-        prekey, val = en.split('=', 2)

-        if prekey =~ /^-(.*)/

-          key = $1.downcase.to_sym

-          val = false

-        else

-          key = prekey.downcase.to_sym

-        end

-        case key

-        when :casemapping

-          noval_warn(key, val) {

-            @supports[key] = val.to_irc_casemap

-          }

-        when :chanlimit, :idchan, :maxlist, :targmax

-          noval_warn(key, val) {

-            groups = val.split(',')

-            groups.each { |g|

-              k, v = g.split(':')

-              @supports[key][k] = v.to_i || 0

-              if @supports[key][k] == 0

-                warn "Deleting #{key} limit of 0 for #{k}"

-                @supports[key].delete(k)

-              end

-            }

-          }

-        when :chanmodes

-          noval_warn(key, val) {

-            groups = val.split(',')

-            @supports[key][:typea] = groups[0].scan(/./).map { |x| x.to_sym}

-            @supports[key][:typeb] = groups[1].scan(/./).map { |x| x.to_sym}

-            @supports[key][:typec] = groups[2].scan(/./).map { |x| x.to_sym}

-            @supports[key][:typed] = groups[3].scan(/./).map { |x| x.to_sym}

-          }

-        when :channellen, :kicklen, :modes, :topiclen

-          if val

-            @supports[key] = val.to_i

-          else

-            @supports[key] = nil

-          end

-        when :chantypes

-          @supports[key] = val # can also be nil

-        when :excepts

-          val ||= 'e'

-          @supports[key] = val

-        when :invex

-          val ||= 'I'

-          @supports[key] = val

-        when :maxchannels

-          noval_warn(key, val) {

-            reparse += "CHANLIMIT=(chantypes):#{val} "

-          }

-        when :maxtargets

-          noval_warn(key, val) {

-            @supports[:targmax]['PRIVMSG'] = val.to_i

-            @supports[:targmax]['NOTICE'] = val.to_i

-          }

-        when :network

-          noval_warn(key, val) {

-            @supports[key] = val

-          }

-        when :nicklen

-          noval_warn(key, val) {

-            @supports[key] = val.to_i

-          }

-        when :prefix

-          if val

-            val.scan(/\((.*)\)(.*)/) { |m, p|

-              @supports[key][:modes] = m.scan(/./).map { |x| x.to_sym}

-              @supports[key][:prefixes] = p.scan(/./).map { |x| x.to_sym}

-            }

-          else

-            @supports[key][:modes] = nil

-            @supports[key][:prefixes] = nil

-          end

-        when :safelist

-          val_warn(key, val) {

-            @supports[key] = val.nil? ? true : val

-          }

-        when :statusmsg

-          noval_warn(key, val) {

-            @supports[key] = val.scan(/./)

-          }

-        when :std

-          noval_warn(key, val) {

-            @supports[key] = val.split(',')

-          }

-        else

-          @supports[key] =  val.nil? ? true : val

-        end

-      }

-      reparse.gsub!("(chantypes)",@supports[:chantypes])

-      parse_isupport(reparse) unless reparse.empty?

-    end

-

-    # Returns the casemap of the server.

-    #

-    def casemap

-      @supports[:casemapping]

-    end

-

-    # Returns User or Channel depending on what _name_ can be

-    # a name of

-    #

-    def user_or_channel?(name)

-      if supports[:chantypes].include?(name[0])

-        return Channel

-      else

-        return User

-      end

-    end

-

-    # Returns the actual User or Channel object matching _name_

-    #

-    def user_or_channel(name)

-      if supports[:chantypes].include?(name[0])

-        return channel(name)

-      else

-        return user(name)

-      end

-    end

-

-    # Checks if the receiver already has a channel with the given _name_

-    #

-    def has_channel?(name)

-      return false if name.nil_or_empty?

-      channel_names.index(name.irc_downcase(casemap))

-    end

-    alias :has_chan? :has_channel?

-

-    # Returns the channel with name _name_, if available

-    #

-    def get_channel(name)

-      return nil if name.nil_or_empty?

-      idx = has_channel?(name)

-      channels[idx] if idx

-    end

-    alias :get_chan :get_channel

-

-    # Create a new Channel object bound to the receiver and add it to the

-    # list of <code>Channel</code>s on the receiver, unless the channel was

-    # present already. In this case, the default action is to raise an

-    # exception, unless _fails_ is set to false.  An exception can also be

-    # raised if _str_ is nil or empty, again only if _fails_ is set to true;

-    # otherwise, the method just returns nil

-    #

-    def new_channel(name, topic=nil, users=[], fails=true)

-      if name.nil_or_empty?

-        raise "Tried to look for empty or nil channel name #{name.inspect}" if fails

-        return nil

-      end

-      ex = get_chan(name)

-      if ex

-        raise "Channel #{name} already exists on server #{self}" if fails

-        return ex

-      else

-

-        prefix = name[0].chr

-

-        # Give a warning if the new Channel goes over some server limits.

-        #

-        # FIXME might need to raise an exception

-        #

-        warn "#{self} doesn't support channel prefix #{prefix}" unless @supports[:chantypes].include?(prefix)

-        warn "#{self} doesn't support channel names this long (#{name.length} > #{@supports[:channellen]})" unless name.length <= @supports[:channellen]

-

-        # Next, we check if we hit the limit for channels of type +prefix+

-        # if the server supports +chanlimit+

-        #

-        @supports[:chanlimit].keys.each { |k|

-          next unless k.include?(prefix)

-          count = 0

-          channel_names.each { |n|

-            count += 1 if k.include?(n[0])

-          }

-          # raise IndexError, "Already joined #{count} channels with prefix #{k}" if count == @supports[:chanlimit][k]

-          warn "Already joined #{count}/#{@supports[:chanlimit][k]} channels with prefix #{k}, we may be going over server limits" if count >= @supports[:chanlimit][k]

-        }

-

-        # So far, everything is fine. Now create the actual Channel

-        #

-        chan = Channel.new(name, topic, users, :server => self)

-

-        # We wade through +prefix+ and +chanmodes+ to create appropriate

-        # lists and flags for this channel

-

-        @supports[:prefix][:modes].each { |mode|

-          chan.create_mode(mode, Channel::UserMode)

-        } if @supports[:prefix][:modes]

-

-        @supports[:chanmodes].each { |k, val|

-          if val

-            case k

-            when :typea

-              val.each { |mode|

-                chan.create_mode(mode, Channel::ModeTypeA)

-              }

-            when :typeb

-              val.each { |mode|

-                chan.create_mode(mode, Channel::ModeTypeB)

-              }

-            when :typec

-              val.each { |mode|

-                chan.create_mode(mode, Channel::ModeTypeC)

-              }

-            when :typed

-              val.each { |mode|

-                chan.create_mode(mode, Channel::ModeTypeD)

-              }

-            end

-          end

-        }

-

-        @channels << chan

-        # debug "Created channel #{chan.inspect}"

-        return chan

-      end

-    end

-

-    # Returns the Channel with the given _name_ on the server,

-    # creating it if necessary. This is a short form for

-    # new_channel(_str_, nil, [], +false+)

-    #

-    def channel(str)

-      new_channel(str,nil,[],false)

-    end

-

-    # Remove Channel _name_ from the list of <code>Channel</code>s

-    #

-    def delete_channel(name)

-      idx = has_channel?(name)

-      raise "Tried to remove unmanaged channel #{name}" unless idx

-      @channels.delete_at(idx)

-    end

-

-    # Checks if the receiver already has a user with the given _nick_

-    #

-    def has_user?(nick)

-      return false if nick.nil_or_empty?

-      user_nicks.index(nick.irc_downcase(casemap))

-    end

-

-    # Returns the user with nick _nick_, if available

-    #

-    def get_user(nick)

-      idx = has_user?(nick)

-      @users[idx] if idx

-    end

-

-    # Create a new User object bound to the receiver and add it to the list

-    # of <code>User</code>s on the receiver, unless the User was present

-    # already. In this case, the default action is to raise an exception,

-    # unless _fails_ is set to false. An exception can also be raised

-    # if _str_ is nil or empty, again only if _fails_ is set to true;

-    # otherwise, the method just returns nil

-    #

-    def new_user(str, fails=true)

-      if str.nil_or_empty?

-        raise "Tried to look for empty or nil user name #{str.inspect}" if fails

-        return nil

-      end

-      tmp = str.to_irc_user(:server => self)

-      old = get_user(tmp.nick)

-      # debug "Tmp: #{tmp.inspect}"

-      # debug "Old: #{old.inspect}"

-      if old

-        # debug "User already existed as #{old.inspect}"

-        if tmp.known?

-          if old.known?

-            # debug "Both were known"

-            # Do not raise an error: things like Freenode change the hostname after identification

-            warning "User #{tmp.nick} has inconsistent Netmasks! #{self} knows #{old.inspect} but access was tried with #{tmp.inspect}" if old != tmp

-            raise "User #{tmp} already exists on server #{self}" if fails

-          end

-          if old.fullform.downcase != tmp.fullform.downcase

-            old.replace(tmp)

-            # debug "Known user now #{old.inspect}"

-          end

-        end

-        return old

-      else

-        warn "#{self} doesn't support nicknames this long (#{tmp.nick.length} > #{@supports[:nicklen]})" unless tmp.nick.length <= @supports[:nicklen]

-        @users << tmp

-        return @users.last

-      end

-    end

-

-    # Returns the User with the given Netmask on the server,

-    # creating it if necessary. This is a short form for

-    # new_user(_str_, +false+)

-    #

-    def user(str)

-      new_user(str, false)

-    end

-

-    # Deletes User _user_ from Channel _channel_

-    #

-    def delete_user_from_channel(user, channel)

-      channel.delete_user(user)

-    end

-

-    # Remove User _someuser_ from the list of <code>User</code>s.

-    # _someuser_ must be specified with the full Netmask.

-    #

-    def delete_user(someuser)

-      idx = has_user?(someuser)

-      raise "Tried to remove unmanaged user #{user}" unless idx

-      have = self.user(someuser)

-      @channels.each { |ch|

-        delete_user_from_channel(have, ch)

-      }

-      @users.delete_at(idx)

-    end

-

-    # Create a new Netmask object with the appropriate casemap

-    #

-    def new_netmask(str)

-      str.to_irc_netmask(:server => self)

-    end

-

-    # Finds all <code>User</code>s on server whose Netmask matches _mask_

-    #

-    def find_users(mask)

-      nm = new_netmask(mask)

-      @users.inject(UserList.new) {

-        |list, user|

-        if user.user == "*" or user.host == "*"

-          list << user if user.nick.irc_downcase(casemap) =~ nm.nick.irc_downcase(casemap).to_irc_regexp

-        else

-          list << user if user.matches?(nm)

-        end

-        list

-      }

-    end

-

-  end

-

-end

-

+#-- vim:sw=2:et
+# General TODO list
+# * do we want to handle a Channel list for each User telling which
+#   Channels is the User on (of those the client is on too)?
+#   We may want this so that when a User leaves all Channels and he hasn't
+#   sent us privmsgs, we know we can remove him from the Server @users list
+# * Maybe ChannelList and UserList should be HashesOf instead of ArrayOf?
+#   See items marked as TODO Ho.
+#   The framework to do this is now in place, thanks to the new [] method
+#   for NetmaskList, which allows retrieval by Netmask or String
+#++
+# :title: IRC module
+#
+# Basic IRC stuff
+#
+# This module defines the fundamental building blocks for IRC
+#
+# Author:: Giuseppe Bilotta (giuseppe.bilotta@gmail.com)
+# Copyright:: Copyright (c) 2006 Giuseppe Bilotta
+# License:: GPLv2
+
+require 'singleton'
+
+class Object
+
+  # We extend the Object class with a method that
+  # checks if the receiver is nil or empty
+  def nil_or_empty?
+    return true unless self
+    return true if self.respond_to? :empty? and self.empty?
+    return false
+  end
+
+  # We alias the to_s method to __to_s__ to make
+  # it accessible in all classes
+  alias :__to_s__ :to_s 
+end
+
+# The Irc module is used to keep all IRC-related classes
+# in the same namespace
+#
+module Irc
+
+
+  # Due to its Scandinavian origins, IRC has strange case mappings, which
+  # consider the characters <tt>{}|^</tt> as the uppercase
+  # equivalents of # <tt>[]\~</tt>.
+  #
+  # This is however not the same on all IRC servers: some use standard ASCII
+  # casemapping, other do not consider <tt>^</tt> as the uppercase of
+  # <tt>~</tt>
+  #
+  class Casemap
+    @@casemaps = {}
+
+    # Create a new casemap with name _name_, uppercase characters _upper_ and
+    # lowercase characters _lower_
+    #
+    def initialize(name, upper, lower)
+      @key = name.to_sym
+      raise "Casemap #{name.inspect} already exists!" if @@casemaps.has_key?(@key)
+      @@casemaps[@key] = {
+        :upper => upper,
+        :lower => lower,
+        :casemap => self
+      }
+    end
+
+    # Returns the Casemap with the given name
+    #
+    def Casemap.get(name)
+      @@casemaps[name.to_sym][:casemap]
+    end
+
+    # Retrieve the 'uppercase characters' of this Casemap
+    #
+    def upper
+      @@casemaps[@key][:upper]
+    end
+
+    # Retrieve the 'lowercase characters' of this Casemap
+    #
+    def lower
+      @@casemaps[@key][:lower]
+    end
+
+    # Return a Casemap based on the receiver
+    #
+    def to_irc_casemap
+      self
+    end
+
+    # A Casemap is represented by its lower/upper mappings
+    #
+    def inspect
+      self.__to_s__[0..-2] + " #{upper.inspect} ~(#{self})~ #{lower.inspect}>"
+    end
+
+    # As a String we return our name
+    #
+    def to_s
+      @key.to_s
+    end
+
+    # Two Casemaps are equal if they have the same upper and lower ranges
+    #
+    def ==(arg)
+      other = arg.to_irc_casemap
+      return self.upper == other.upper && self.lower == other.lower
+    end
+
+    # Give a warning if _arg_ and self are not the same Casemap
+    #
+    def must_be(arg)
+      other = arg.to_irc_casemap
+      if self == other
+        return true
+      else
+        warn "Casemap mismatch (#{self.inspect} != #{other.inspect})"
+        return false
+      end
+    end
+
+  end
+
+  # The rfc1459 casemap
+  #
+  class RfcCasemap < Casemap
+    include Singleton
+
+    def initialize
+      super('rfc1459', "\x41-\x5e", "\x61-\x7e")
+    end
+
+  end
+  RfcCasemap.instance
+
+  # The strict-rfc1459 Casemap
+  #
+  class StrictRfcCasemap < Casemap
+    include Singleton
+
+    def initialize
+      super('strict-rfc1459', "\x41-\x5d", "\x61-\x7d")
+    end
+
+  end
+  StrictRfcCasemap.instance
+
+  # The ascii Casemap
+  #
+  class AsciiCasemap < Casemap
+    include Singleton
+
+    def initialize
+      super('ascii', "\x41-\x5a", "\x61-\x7a")
+    end
+
+  end
+  AsciiCasemap.instance
+
+
+  # This module is included by all classes that are either bound to a server
+  # or should have a casemap.
+  #
+  module ServerOrCasemap
+
+    attr_reader :server
+
+    # This method initializes the instance variables @server and @casemap
+    # according to the values of the hash keys :server and :casemap in _opts_
+    #
+    def init_server_or_casemap(opts={})
+      @server = opts.fetch(:server, nil)
+      raise TypeError, "#{@server} is not a valid Irc::Server" if @server and not @server.kind_of?(Server)
+
+      @casemap = opts.fetch(:casemap, nil)
+      if @server
+        if @casemap
+          @server.casemap.must_be(@casemap)
+          @casemap = nil
+        end
+      else
+        @casemap = (@casemap || 'rfc1459').to_irc_casemap
+      end
+    end
+
+    # This is an auxiliary method: it returns true if the receiver fits the
+    # server and casemap specified in _opts_, false otherwise.
+    #
+    def fits_with_server_and_casemap?(opts={})
+      srv = opts.fetch(:server, nil)
+      cmap = opts.fetch(:casemap, nil)
+      cmap = cmap.to_irc_casemap unless cmap.nil?
+
+      if srv.nil?
+        return true if cmap.nil? or cmap == casemap
+      else
+        return true if srv == @server and (cmap.nil? or cmap == casemap)
+      end
+      return false
+    end
+
+    # Returns the casemap of the receiver, by looking at the bound
+    # @server (if possible) or at the @casemap otherwise
+    #
+    def casemap
+      return @server.casemap if defined?(@server) and @server
+      return @casemap
+    end
+
+    # Returns a hash with the current @server and @casemap as values of
+    # :server and :casemap
+    #
+    def server_and_casemap
+      h = {}
+      h[:server] = @server if defined?(@server) and @server
+      h[:casemap] = @casemap if defined?(@casemap) and @casemap
+      return h
+    end
+
+    # We allow up/downcasing with a different casemap
+    #
+    def irc_downcase(cmap=casemap)
+      self.to_s.irc_downcase(cmap)
+    end
+
+    # Up/downcasing something that includes this module returns its
+    # Up/downcased to_s form
+    #
+    def downcase
+      self.irc_downcase
+    end
+
+    # We allow up/downcasing with a different casemap
+    #
+    def irc_upcase(cmap=casemap)
+      self.to_s.irc_upcase(cmap)
+    end
+
+    # Up/downcasing something that includes this module returns its
+    # Up/downcased to_s form
+    #
+    def upcase
+      self.irc_upcase
+    end
+
+  end
+
+end
+
+
+# We start by extending the String class
+# with some IRC-specific methods
+#
+class String
+
+  # This method returns the Irc::Casemap whose name is the receiver
+  #
+  def to_irc_casemap
+    Irc::Casemap.get(self) rescue raise TypeError, "Unkown Irc::Casemap #{self.inspect}"
+  end
+
+  # This method returns a string which is the downcased version of the
+  # receiver, according to the given _casemap_
+  #
+  #
+  def irc_downcase(casemap='rfc1459')
+    cmap = casemap.to_irc_casemap
+    self.tr(cmap.upper, cmap.lower)
+  end
+
+  # This is the same as the above, except that the string is altered in place
+  #
+  # See also the discussion about irc_downcase
+  #
+  def irc_downcase!(casemap='rfc1459')
+    cmap = casemap.to_irc_casemap
+    self.tr!(cmap.upper, cmap.lower)
+  end
+
+  # Upcasing functions are provided too
+  #
+  # See also the discussion about irc_downcase
+  #
+  def irc_upcase(casemap='rfc1459')
+    cmap = casemap.to_irc_casemap
+    self.tr(cmap.lower, cmap.upper)
+  end
+
+  # In-place upcasing
+  #
+  # See also the discussion about irc_downcase
+  #
+  def irc_upcase!(casemap='rfc1459')
+    cmap = casemap.to_irc_casemap
+    self.tr!(cmap.lower, cmap.upper)
+  end
+
+  # This method checks if the receiver contains IRC glob characters
+  #
+  # IRC has a very primitive concept of globs: a <tt>*</tt> stands for "any
+  # number of arbitrary characters", a <tt>?</tt> stands for "one and exactly
+  # one arbitrary character". These characters can be escaped by prefixing them
+  # with a slash (<tt>\\</tt>).
+  #
+  # A known limitation of this glob syntax is that there is no way to escape
+  # the escape character itself, so it's not possible to build a glob pattern
+  # where the escape character precedes a glob.
+  #
+  def has_irc_glob?
+    self =~ /^[*?]|[^\\][*?]/
+  end
+
+  # This method is used to convert the receiver into a Regular Expression
+  # that matches according to the IRC glob syntax
+  #
+  def to_irc_regexp
+    regmask = Regexp.escape(self)
+    regmask.gsub!(/(\\\\)?\\[*?]/) { |m|
+      case m
+      when /\\(\\[*?])/
+        $1
+      when /\\\*/
+        '.*'
+      when /\\\?/
+        '.'
+      else
+        raise "Unexpected match #{m} when converting #{self}"
+      end
+    }
+    Regexp.new("^#{regmask}$")
+  end
+
+end
+
+
+# ArrayOf is a subclass of Array whose elements are supposed to be all
+# of the same class. This is not intended to be used directly, but rather
+# to be subclassed as needed (see for example Irc::UserList and Irc::NetmaskList)
+#
+# Presently, only very few selected methods from Array are overloaded to check
+# if the new elements are the correct class. An orthodox? method is provided
+# to check the entire ArrayOf against the appropriate class.
+#
+class ArrayOf < Array
+
+  attr_reader :element_class
+
+  # Create a new ArrayOf whose elements are supposed to be all of type _kl_,
+  # optionally filling it with the elements from the Array argument.
+  #
+  def initialize(kl, ar=[])
+    raise TypeError, "#{kl.inspect} must be a class name" unless kl.kind_of?(Class)
+    super()
+    @element_class = kl
+    case ar
+    when Array
+      insert(0, *ar)
+    else
+      raise TypeError, "#{self.class} can only be initialized from an Array"
+    end
+  end
+
+  def inspect
+    self.__to_s__[0..-2].sub(/:[^:]+$/,"[#{@element_class}]\\0") + " #{super}>"
+  end
+
+  # Private method to check the validity of the elements passed to it
+  # and optionally raise an error
+  #
+  # TODO should it accept nils as valid?
+  #
+  def internal_will_accept?(raising, *els)
+    els.each { |el|
+      unless el.kind_of?(@element_class)
+        raise TypeError, "#{el.inspect} is not of class #{@element_class}" if raising
+        return false
+      end
+    }
+    return true
+  end
+  private :internal_will_accept?
+
+  # This method checks if the passed arguments are acceptable for our ArrayOf
+  #
+  def will_accept?(*els)
+    internal_will_accept?(false, *els)
+  end
+
+  # This method checks that all elements are of the appropriate class
+  #
+  def valid?
+    will_accept?(*self)
+  end
+
+  # This method is similar to the above, except that it raises an exception
+  # if the receiver is not valid
+  #
+  def validate
+    raise TypeError unless valid?
+  end
+
+  # Overloaded from Array#<<, checks for appropriate class of argument
+  #
+  def <<(el)
+    super(el) if internal_will_accept?(true, el)
+  end
+
+  # Overloaded from Array#&, checks for appropriate class of argument elements
+  #
+  def &(ar)
+    r = super(ar)
+    ArrayOf.new(@element_class, r) if internal_will_accept?(true, *r)
+  end
+
+  # Overloaded from Array#+, checks for appropriate class of argument elements
+  #
+  def +(ar)
+    ArrayOf.new(@element_class, super(ar)) if internal_will_accept?(true, *ar)
+  end
+
+  # Overloaded from Array#-, so that an ArrayOf is returned. There is no need
+  # to check the validity of the elements in the argument
+  #
+  def -(ar)
+    ArrayOf.new(@element_class, super(ar)) # if internal_will_accept?(true, *ar)
+  end
+
+  # Overloaded from Array#|, checks for appropriate class of argument elements
+  #
+  def |(ar)
+    ArrayOf.new(@element_class, super(ar)) if internal_will_accept?(true, *ar)
+  end
+
+  # Overloaded from Array#concat, checks for appropriate class of argument
+  # elements
+  #
+  def concat(ar)
+    super(ar) if internal_will_accept?(true, *ar)
+  end
+
+  # Overloaded from Array#insert, checks for appropriate class of argument
+  # elements
+  #
+  def insert(idx, *ar)
+    super(idx, *ar) if internal_will_accept?(true, *ar)
+  end
+
+  # Overloaded from Array#replace, checks for appropriate class of argument
+  # elements
+  #
+  def replace(ar)
+    super(ar) if (ar.kind_of?(ArrayOf) && ar.element_class <= @element_class) or internal_will_accept?(true, *ar)
+  end
+
+  # Overloaded from Array#push, checks for appropriate class of argument
+  # elements
+  #
+  def push(*ar)
+    super(*ar) if internal_will_accept?(true, *ar)
+  end
+
+  # Overloaded from Array#unshift, checks for appropriate class of argument(s)
+  #
+  def unshift(*els)
+    els.each { |el|
+      super(el) if internal_will_accept?(true, *els)
+    }
+  end
+
+  # We introduce the 'downcase' method, which maps downcase() to all the Array
+  # elements, properly failing when the elements don't have a downcase method
+  #
+  def downcase
+    self.map { |el| el.downcase }
+  end
+
+  # Modifying methods which we don't handle yet are made private
+  #
+  private :[]=, :collect!, :map!, :fill, :flatten!
+
+end
+
+
+# We extend the Regexp class with an Irc module which will contain some
+# Irc-specific regexps
+#
+class Regexp
+
+  # We start with some general-purpose ones which will be used in the
+  # Irc module too, but are useful regardless
+  DIGITS = /\d+/
+  HEX_DIGIT = /[0-9A-Fa-f]/
+  HEX_DIGITS = /#{HEX_DIGIT}+/
+  HEX_OCTET = /#{HEX_DIGIT}#{HEX_DIGIT}?/
+  DEC_OCTET = /[01]?\d?\d|2[0-4]\d|25[0-5]/
+  DEC_IP_ADDR = /#{DEC_OCTET}.#{DEC_OCTET}.#{DEC_OCTET}.#{DEC_OCTET}/
+  HEX_IP_ADDR = /#{HEX_OCTET}.#{HEX_OCTET}.#{HEX_OCTET}.#{HEX_OCTET}/
+  IP_ADDR = /#{DEC_IP_ADDR}|#{HEX_IP_ADDR}/
+
+  # IPv6, from Resolv::IPv6, without the \A..\z anchors
+  HEX_16BIT = /#{HEX_DIGIT}{1,4}/
+  IP6_8Hex = /(?:#{HEX_16BIT}:){7}#{HEX_16BIT}/
+  IP6_CompressedHex = /((?:#{HEX_16BIT}(?::#{HEX_16BIT})*)?)::((?:#{HEX_16BIT}(?::#{HEX_16BIT})*)?)/
+  IP6_6Hex4Dec = /((?:#{HEX_16BIT}:){6,6})#{DEC_IP_ADDR}/
+  IP6_CompressedHex4Dec = /((?:#{HEX_16BIT}(?::#{HEX_16BIT})*)?)::((?:#{HEX_16BIT}:)*)#{DEC_IP_ADDR}/
+  IP6_ADDR = /(?:#{IP6_8Hex})|(?:#{IP6_CompressedHex})|(?:#{IP6_6Hex4Dec})|(?:#{IP6_CompressedHex4Dec})/
+
+  # We start with some IRC related regular expressions, used to match
+  # Irc::User nicks and users and Irc::Channel names
+  #
+  # For each of them we define two versions of the regular expression:
+  # * a generic one, which should match for any server but may turn out to
+  #   match more than a specific server would accept
+  # * an RFC-compliant matcher
+  #
+  module Irc
+
+    # Channel-name-matching regexps
+    CHAN_FIRST = /[#&+]/
+    CHAN_SAFE = /![A-Z0-9]{5}/
+    CHAN_ANY = /[^\x00\x07\x0A\x0D ,:]/
+    GEN_CHAN = /(?:#{CHAN_FIRST}|#{CHAN_SAFE})#{CHAN_ANY}+/
+    RFC_CHAN = /#{CHAN_FIRST}#{CHAN_ANY}{1,49}|#{CHAN_SAFE}#{CHAN_ANY}{1,44}/
+
+    # Nick-matching regexps
+    SPECIAL_CHAR = /[\x5b-\x60\x7b-\x7d]/
+    NICK_FIRST = /#{SPECIAL_CHAR}|[[:alpha:]]/
+    NICK_ANY = /#{SPECIAL_CHAR}|[[:alnum:]]|-/
+    GEN_NICK = /#{NICK_FIRST}#{NICK_ANY}+/
+    RFC_NICK = /#{NICK_FIRST}#{NICK_ANY}{0,8}/
+
+    USER_CHAR = /[^\x00\x0a\x0d @]/
+    GEN_USER = /#{USER_CHAR}+/
+
+    # Host-matching regexps
+    HOSTNAME_COMPONENT = /[[:alnum:]](?:[[:alnum:]]|-)*[[:alnum:]]*/
+    HOSTNAME = /#{HOSTNAME_COMPONENT}(?:\.#{HOSTNAME_COMPONENT})*/
+    HOSTADDR = /#{IP_ADDR}|#{IP6_ADDR}/
+
+    GEN_HOST = /#{HOSTNAME}|#{HOSTADDR}/
+
+    # # FreeNode network replaces the host of affiliated users with
+    # # 'virtual hosts' 
+    # # FIXME we need the true syntax to match it properly ...
+    # PDPC_HOST_PART = /[0-9A-Za-z.-]+/
+    # PDPC_HOST = /#{PDPC_HOST_PART}(?:\/#{PDPC_HOST_PART})+/
+
+    # # NOTE: the final optional and non-greedy dot is needed because some
+    # # servers (e.g. FreeNode) send the hostname of the services as "services."
+    # # which is not RFC compliant, but sadly done.
+    # GEN_HOST_EXT = /#{PDPC_HOST}|#{GEN_HOST}\.??/ 
+
+    # Sadly, different networks have different, RFC-breaking ways of cloaking
+    # the actualy host address: see above for an example to handle FreeNode.
+    # Another example would be Azzurra, wich also inserts a "=" in the
+    # cloacked host. So let's just not care about this and go with the simplest
+    # thing:
+    GEN_HOST_EXT = /\S+/
+
+    # User-matching Regexp
+    GEN_USER_ID = /(#{GEN_NICK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/
+
+    # Things such has the BIP proxy send invalid nicks in a complete netmask,
+    # so we want to match this, rather: this matches either a compliant nick
+    # or a a string with a very generic nick, a very generic hostname after an
+    # @ sign, and an optional user after a !
+    BANG_AT = /#{GEN_NICK}|\S+?(?:!\S+?)?@\S+?/
+
+    # # For Netmask, we want to allow wildcards * and ? in the nick
+    # # (they are already allowed in the user and host part
+    # GEN_NICK_MASK = /(?:#{NICK_FIRST}|[?*])?(?:#{NICK_ANY}|[?*])+/
+
+    # # Netmask-matching Regexp
+    # GEN_MASK = /(#{GEN_NICK_MASK})(?:(?:!(#{GEN_USER}))?@(#{GEN_HOST_EXT}))?/
+
+  end
+
+end
+
+
+module Irc
+
+
+  # A Netmask identifies each user by collecting its nick, username and
+  # hostname in the form <tt>nick!user@host</tt>
+  #
+  # Netmasks can also contain glob patterns in any of their components; in
+  # this form they are used to refer to more than a user or to a user
+  # appearing under different forms.
+  #
+  # Example:
+  # * <tt>*!*@*</tt> refers to everybody
+  # * <tt>*!someuser@somehost</tt> refers to user +someuser+ on host +somehost+
+  #   regardless of the nick used.
+  #
+  class Netmask
+
+    # Netmasks have an associated casemap unless they are bound to a server
+    #
+    include ServerOrCasemap
+
+    attr_reader :nick, :user, :host
+    alias :ident :user
+
+    # Create a new Netmask from string _str_, which must be in the form
+    # _nick_!_user_@_host_
+    #
+    # It is possible to specify a server or a casemap in the optional Hash:
+    # these are used to associate the Netmask with the given server and to set
+    # its casemap: if a server is specified and a casemap is not, the server's
+    # casemap is used. If both a server and a casemap are specified, the
+    # casemap must match the server's casemap or an exception will be raised.
+    #
+    # Empty +nick+, +user+ or +host+ are converted to the generic glob pattern
+    #
+    def initialize(str="", opts={})
+      # First of all, check for server/casemap option
+      #
+      init_server_or_casemap(opts)
+
+      # Now we can see if the given string _str_ is an actual Netmask
+      if str.respond_to?(:to_str)
+        case str.to_str
+          # We match a pretty generic string, to work around non-compliant
+          # servers
+        when /^(?:(\S+?)(?:(?:!(\S+?))?@(\S+))?)?$/
+          # We do assignment using our internal methods
+          self.nick = $1
+          self.user = $2
+          self.host = $3
+        else
+          raise ArgumentError, "#{str.to_str.inspect} does not represent a valid #{self.class}"
+        end
+      else
+        raise TypeError, "#{str} cannot be converted to a #{self.class}"
+      end
+    end
+
+    # A Netmask is easily converted to a String for the usual representation.
+    # We skip the user or host parts if they are "*", unless we've been asked
+    # for the full form
+    #
+    def to_s
+      ret = nick.dup
+      ret << "!" << user unless user == "*"
+      ret << "@" << host unless host == "*"
+      return ret
+    end
+
+    def fullform
+      "#{nick}!#{user}@#{host}"
+    end
+
+    alias :to_str :fullform
+
+    # This method downcases the fullform of the netmask. While this may not be
+    # significantly different from the #downcase() method provided by the
+    # ServerOrCasemap mixin, it's significantly different for Netmask
+    # subclasses such as User whose simple downcasing uses the nick only.
+    #
+    def full_irc_downcase(cmap=casemap)
+      self.fullform.irc_downcase(cmap)
+    end
+
+    # full_downcase() will return the fullform downcased according to the
+    # User's own casemap
+    #
+    def full_downcase
+      self.full_irc_downcase
+    end
+
+    # This method returns a new Netmask which is the fully downcased version
+    # of the receiver
+    def downcased
+      return self.full_downcase.to_irc_netmask(server_and_casemap)
+    end
+
+    # Converts the receiver into a Netmask with the given (optional)
+    # server/casemap association. We return self unless a conversion
+    # is needed (different casemap/server)
+    #
+    # Subclasses of Netmask will return a new Netmask, using full_downcase
+    #
+    def to_irc_netmask(opts={})
+      if self.class == Netmask
+        return self if fits_with_server_and_casemap?(opts)
+      end
+      return self.full_downcase.to_irc_netmask(server_and_casemap.merge(opts))
+    end
+
+    # Converts the receiver into a User with the given (optional)
+    # server/casemap association. We return self unless a conversion
+    # is needed (different casemap/server)
+    #
+    def to_irc_user(opts={})
+      self.fullform.to_irc_user(server_and_casemap.merge(opts))
+    end
+
+    # Inspection of a Netmask reveals the server it's bound to (if there is
+    # one), its casemap and the nick, user and host part
+    #
+    def inspect
+      str = self.__to_s__[0..-2]
+      str << " @server=#{@server}" if defined?(@server) and @server
+      str << " @nick=#{@nick.inspect} @user=#{@user.inspect}"
+      str << " @host=#{@host.inspect} casemap=#{casemap.inspect}"
+      str << ">"
+    end
+
+    # Equality: two Netmasks are equal if they downcase to the same thing
+    #
+    # TODO we may want it to try other.to_irc_netmask
+    #
+    def ==(other)
+      return false unless other.kind_of?(self.class)
+      self.downcase == other.downcase
+    end
+
+    # This method changes the nick of the Netmask, defaulting to the generic
+    # glob pattern if the result is the null string.
+    #
+    def nick=(newnick)
+      @nick = newnick.to_s
+      @nick = "*" if @nick.empty?
+    end
+
+    # This method changes the user of the Netmask, defaulting to the generic
+    # glob pattern if the result is the null string.
+    #
+    def user=(newuser)
+      @user = newuser.to_s
+      @user = "*" if @user.empty?
+    end
+    alias :ident= :user=
+
+    # This method changes the hostname of the Netmask, defaulting to the generic
+    # glob pattern if the result is the null string.
+    #
+    def host=(newhost)
+      @host = newhost.to_s
+      @host = "*" if @host.empty?
+    end
+
+    # We can replace everything at once with data from another Netmask
+    #
+    def replace(other)
+      case other
+      when Netmask
+        nick = other.nick
+        user = other.user
+        host = other.host
+        @server = other.server
+        @casemap = other.casemap unless @server
+      else
+        replace(other.to_irc_netmask(server_and_casemap))
+      end
+    end
+
+    # This method checks if a Netmask is definite or not, by seeing if
+    # any of its components are defined by globs
+    #
+    def has_irc_glob?
+      return @nick.has_irc_glob? || @user.has_irc_glob? || @host.has_irc_glob?
+    end
+
+    def generalize
+      u = user.dup
+      unless u.has_irc_glob?
+        u.sub!(/^[in]=/, '=') or u.sub!(/^\W(\w+)/, '\1')
+        u = '*' + u
+      end
+
+      h = host.dup
+      unless h.has_irc_glob?
+        if h.include? '/'
+          h.sub!(/x-\w+$/, 'x-*')
+        else
+          h.match(/^[^\.]+\.[^\.]+$/) or
+          h.sub!(/azzurra[=-][0-9a-f]+/i, '*') or # hello, azzurra, you suck!
+          h.sub!(/^(\d+\.\d+\.\d+\.)\d+$/, '\1*') or
+          h.sub!(/^[^\.]+\./, '*.')
+        end
+      end
+      return Netmask.new("*!#{u}@#{h}", server_and_casemap)
+    end
+
+    # This method is used to match the current Netmask against another one
+    #
+    # The method returns true if each component of the receiver matches the
+    # corresponding component of the argument. By _matching_ here we mean
+    # that any netmask described by the receiver is also described by the
+    # argument.
+    #
+    # In this sense, matching is rather simple to define in the case when the
+    # receiver has no globs: it is just necessary to check if the argument
+    # describes the receiver, which can be done by matching it against the
+    # argument converted into an IRC Regexp (see String#to_irc_regexp).
+    #
+    # The situation is also easy when the receiver has globs and the argument
+    # doesn't, since in this case the result is false.
+    #
+    # The more complex case in which both the receiver and the argument have
+    # globs is not handled yet.
+    #
+    def matches?(arg)
+      cmp = arg.to_irc_netmask(:casemap => casemap)
+      debug "Matching #{self.fullform} against #{arg.inspect} (#{cmp.fullform})"
+      [:nick, :user, :host].each { |component|
+        us = self.send(component).irc_downcase(casemap)
+        them = cmp.send(component).irc_downcase(casemap)
+        if us.has_irc_glob? && them.has_irc_glob?
+          next if us == them
+          warn NotImplementedError
+          return false
+        end
+        return false if us.has_irc_glob? && !them.has_irc_glob?
+        return false unless us =~ them.to_irc_regexp
+      }
+      return true
+    end
+
+    # Case equality. Checks if arg matches self
+    #
+    def ===(arg)
+      arg.to_irc_netmask(:casemap => casemap).matches?(self)
+    end
+
+    # Sorting is done via the fullform
+    #
+    def <=>(arg)
+      case arg
+      when Netmask
+        self.fullform.irc_downcase(casemap) <=> arg.fullform.irc_downcase(casemap)
+      else
+        self.downcase <=> arg.downcase
+      end
+    end
+
+  end
+
+
+  # A NetmaskList is an ArrayOf <code>Netmask</code>s
+  #
+  class NetmaskList < ArrayOf
+
+    # Create a new NetmaskList, optionally filling it with the elements from
+    # the Array argument fed to it.
+    #
+    def initialize(ar=[])
+      super(Netmask, ar)
+    end
+
+    # We enhance the [] method by allowing it to pick an element that matches
+    # a given Netmask, a String or a Regexp
+    # TODO take into consideration the opportunity to use select() instead of
+    # find(), and/or a way to let the user choose which one to take (second
+    # argument?)
+    #
+    def [](*args)
+      if args.length == 1
+        case args[0]
+        when Netmask
+          self.find { |mask|
+            mask.matches?(args[0])
+          }
+        when String
+          self.find { |mask|
+            mask.matches?(args[0].to_irc_netmask(:casemap => mask.casemap))
+          }
+        when Regexp
+          self.find { |mask|
+            mask.fullform =~ args[0]
+          }
+        else
+          super(*args)
+        end
+      else
+        super(*args)
+      end
+    end
+
+  end
+
+end
+
+
+class String
+
+  # We keep extending String, this time adding a method that converts a
+  # String into an Irc::Netmask object
+  #
+  def to_irc_netmask(opts={})
+    Irc::Netmask.new(self, opts)
+  end
+
+end
+
+
+module Irc
+
+
+  # An IRC User is identified by his/her Netmask (which must not have globs).
+  # In fact, User is just a subclass of Netmask.
+  #
+  # Ideally, the user and host information of an IRC User should never
+  # change, and it shouldn't contain glob patterns. However, IRC is somewhat
+  # idiosincratic and it may be possible to know the nick of a User much before
+  # its user and host are known. Moreover, some networks (namely Freenode) may
+  # change the hostname of a User when (s)he identifies with Nickserv.
+  #
+  # As a consequence, we must allow changes to a User host and user attributes.
+  # We impose a restriction, though: they may not contain glob patterns, except
+  # for the special case of an unknown user/host which is represented by a *.
+  #
+  # It is possible to create a totally unknown User (e.g. for initializations)
+  # by setting the nick to * too.
+  #
+  # TODO list:
+  # * see if it's worth to add the other USER data
+  # * see if it's worth to add NICKSERV status
+  #
+  class User < Netmask
+    alias :to_s :nick
+
+    attr_accessor :real_name
+
+    # Create a new IRC User from a given Netmask (or anything that can be converted
+    # into a Netmask) provided that the given Netmask does not have globs.
+    #
+    def initialize(str="", opts={})
+      super
+      raise ArgumentError, "#{str.inspect} must not have globs (unescaped * or ?)" if nick.has_irc_glob? && nick != "*"
+      raise ArgumentError, "#{str.inspect} must not have globs (unescaped * or ?)" if user.has_irc_glob? && user != "*"
+      raise ArgumentError, "#{str.inspect} must not have globs (unescaped * or ?)" if host.has_irc_glob? && host != "*"
+      @away = false
+      @real_name = String.new
+    end
+
+    # The nick of a User may be changed freely, but it must not contain glob patterns.
+    #
+    def nick=(newnick)
+      raise "Can't change the nick to #{newnick}" if defined?(@nick) and newnick.has_irc_glob?
+      super
+    end
+
+    # We have to allow changing the user of an Irc User due to some networks
+    # (e.g. Freenode) changing hostmasks on the fly. We still check if the new
+    # user data has glob patterns though.
+    #
+    def user=(newuser)
+      raise "Can't change the username to #{newuser}" if defined?(@user) and newuser.has_irc_glob?
+      super
+    end
+
+    # We have to allow changing the host of an Irc User due to some networks
+    # (e.g. Freenode) changing hostmasks on the fly. We still check if the new
+    # host data has glob patterns though.
+    #
+    def host=(newhost)
+      raise "Can't change the hostname to #{newhost}" if defined?(@host) and newhost.has_irc_glob?
+      super
+    end
+
+    # Checks if a User is well-known or not by looking at the hostname and user
+    #
+    def known?
+      return nick != "*" && user != "*" && host != "*"
+    end
+
+    # Is the user away?
+    #
+    def away?
+      return @away
+    end
+
+    # Set the away status of the user. Use away=(nil) or away=(false)
+    # to unset away
+    #
+    def away=(msg="")
+      if msg
+        @away = msg
+      else
+        @away = false
+      end
+    end
+
+    # Since to_irc_user runs the same checks on server and channel as
+    # to_irc_netmask, we just try that and return self if it works.
+    #
+    # Subclasses of User will return self if possible.
+    #
+    def to_irc_user(opts={})
+      return self if fits_with_server_and_casemap?(opts)
+      return self.full_downcase.to_irc_user(opts)
+    end
+
+    # We can replace everything at once with data from another User
+    #
+    def replace(other)
+      case other
+      when User
+        self.nick = other.nick
+        self.user = other.user
+        self.host = other.host
+        @server = other.server
+        @casemap = other.casemap unless @server
+        @away = other.away?
+      else
+        self.replace(other.to_irc_user(server_and_casemap))
+      end
+    end
+
+    def modes_on(channel)
+      case channel
+      when Channel
+        channel.modes_of(self)
+      else
+        return @server.channel(channel).modes_of(self) if @server
+        raise "Can't resolve channel #{channel}"
+      end
+    end
+
+    def is_op?(channel)
+      case channel
+      when Channel
+        channel.has_op?(self)
+      else
+        return @server.channel(channel).has_op?(self) if @server
+        raise "Can't resolve channel #{channel}"
+      end
+    end
+
+    def is_voice?(channel)
+      case channel
+      when Channel
+        channel.has_voice?(self)
+      else
+        return @server.channel(channel).has_voice?(self) if @server
+        raise "Can't resolve channel #{channel}"
+      end
+    end
+  end
+
+
+  # A UserList is an ArrayOf <code>User</code>s
+  # We derive it from NetmaskList, which allows us to inherit any special
+  # NetmaskList method
+  #
+  class UserList < NetmaskList
+
+    # Create a new UserList, optionally filling it with the elements from
+    # the Array argument fed to it.
+    #
+    def initialize(ar=[])
+      super(ar)
+      @element_class = User
+    end
+
+    # Convenience method: convert the UserList to a list of nicks. The indices
+    # are preserved
+    #
+    def nicks
+      self.map { |user| user.nick }
+    end
+
+  end
+
+end
+
+class String
+
+  # We keep extending String, this time adding a method that converts a
+  # String into an Irc::User object
+  #
+  def to_irc_user(opts={})
+    Irc::User.new(self, opts)
+  end
+
+end
+
+module Irc
+
+  # An IRC Channel is identified by its name, and it has a set of properties:
+  # * a Channel::Topic
+  # * a UserList
+  # * a set of Channel::Modes
+  #
+  # The Channel::Topic and Channel::Mode classes are defined within the
+  # Channel namespace because they only make sense there
+  #
+  class Channel
+
+
+    # Mode on a Channel
+    #
+    class Mode
+      attr_reader :channel
+      def initialize(ch)
+        @channel = ch
+      end
+
+    end
+
+
+    # Channel modes of type A manipulate lists
+    #
+    # Example: b (banlist)
+    #
+    class ModeTypeA < Mode
+      attr_reader :list
+      def initialize(ch)
+        super
+        @list = NetmaskList.new
+      end
+
+      def set(val)
+        nm = @channel.server.new_netmask(val)
+        @list << nm unless @list.include?(nm)
+      end
+
+      def reset(val)
+        nm = @channel.server.new_netmask(val)
+        @list.delete(nm)
+      end
+
+    end
+
+
+    # Channel modes of type B need an argument
+    #
+    # Example: k (key)
+    #
+    class ModeTypeB < Mode
+      def initialize(ch)
+        super
+        @arg = nil
+      end
+
+      def status
+        @arg
+      end
+      alias :value :status
+
+      def set(val)
+        @arg = val
+      end
+
+      def reset(val)
+        @arg = nil if @arg == val
+      end
+
+    end
+
+
+    # Channel modes that change the User prefixes are like
+    # Channel modes of type B, except that they manipulate
+    # lists of Users, so they are somewhat similar to channel
+    # modes of type A
+    #
+    class UserMode < ModeTypeB
+      attr_reader :list
+      alias :users :list
+      def initialize(ch)
+        super
+        @list = UserList.new
+      end
+
+      def set(val)
+        u = @channel.server.user(val)
+        @list << u unless @list.include?(u)
+      end
+
+      def reset(val)
+        u = @channel.server.user(val)
+        @list.delete(u)
+      end
+
+    end
+
+
+    # Channel modes of type C need an argument when set,
+    # but not when they get reset
+    #
+    # Example: l (limit)
+    #
+    class ModeTypeC < Mode
+      def initialize(ch)
+        super
+        @arg = nil
+      end
+
+      def status
+        @arg
+      end
+      alias :value :status
+
+      def set(val)
+        @arg = val
+      end
+
+      def reset
+        @arg = nil
+      end
+
+    end
+
+
+    # Channel modes of type D are basically booleans
+    #
+    # Example: m (moderate)
+    #
+    class ModeTypeD < Mode
+      def initialize(ch)
+        super
+        @set = false
+      end
+
+      def set?
+        return @set
+      end
+
+      def set
+        @set = true
+      end
+
+      def reset
+        @set = false
+      end
+
+    end
+
+
+    # A Topic represents the topic of a channel. It consists of
+    # the topic itself, who set it and when
+    #
+    class Topic
+      attr_accessor :text, :set_by, :set_on
+      alias :to_s :text
+
+      # Create a new Topic setting the text, the creator and
+      # the creation time
+      #
+      def initialize(text="", set_by="", set_on=Time.new)
+        @text = text
+        @set_by = set_by.to_irc_netmask
+        @set_on = set_on
+      end
+
+      # Replace a Topic with another one
+      #
+      def replace(topic)
+        raise TypeError, "#{topic.inspect} is not of class #{self.class}" unless topic.kind_of?(self.class)
+        @text = topic.text.dup
+        @set_by = topic.set_by.dup
+        @set_on = topic.set_on.dup
+      end
+
+      # Returns self
+      #
+      def to_irc_channel_topic
+        self
+      end
+
+    end
+
+  end
+
+end
+
+
+class String
+
+  # Returns an Irc::Channel::Topic with self as text
+  #
+  def to_irc_channel_topic
+    Irc::Channel::Topic.new(self)
+  end
+
+end
+
+
+module Irc
+
+
+  # Here we start with the actual Channel class
+  #
+  class Channel
+
+    include ServerOrCasemap
+    attr_reader :name, :topic, :mode, :users
+    alias :to_s :name
+
+    def inspect
+      str = self.__to_s__[0..-2]
+      str << " on server #{server}" if server
+      str << " @name=#{@name.inspect} @topic=#{@topic.text.inspect}"
+      str << " @users=[#{user_nicks.sort.join(', ')}]"
+      str << ">"
+    end
+
+    # Returns self
+    #
+    def to_irc_channel
+      self
+    end
+
+    # TODO Ho
+    def user_nicks
+      @users.map { |u| u.downcase }
+    end
+
+    # Checks if the receiver already has a user with the given _nick_
+    #
+    def has_user?(nick)
+      @users.index(nick.to_irc_user(server_and_casemap))
+    end
+
+    # Returns the user with nick _nick_, if available
+    #
+    def get_user(nick)
+      idx = has_user?(nick)
+      @users[idx] if idx
+    end
+
+    # Adds a user to the channel
+    #
+    def add_user(user, opts={})
+      silent = opts.fetch(:silent, false) 
+      if has_user?(user)
+        warn "Trying to add user #{user} to channel #{self} again" unless silent
+      else
+        @users << user.to_irc_user(server_and_casemap)
+      end
+    end
+
+    # Creates a new channel with the given name, optionally setting the topic
+    # and an initial users list.
+    #
+    # No additional info is created here, because the channel flags and userlists
+    # allowed depend on the server.
+    #
+    def initialize(name, topic=nil, users=[], opts={})
+      raise ArgumentError, "Channel name cannot be empty" if name.to_s.empty?
+      warn "Unknown channel prefix #{name[0].chr}" if name !~ /^[&#+!]/
+      raise ArgumentError, "Invalid character in #{name.inspect}" if name =~ /[ \x07,]/
+
+      init_server_or_casemap(opts)
+
+      @name = name
+
+      @topic = topic ? topic.to_irc_channel_topic : Channel::Topic.new
+
+      @users = UserList.new
+
+      users.each { |u|
+        add_user(u)
+      }
+
+      # Flags
+      @mode = {}
+    end
+
+    # Removes a user from the channel
+    #
+    def delete_user(user)
+      @mode.each { |sym, mode|
+        mode.reset(user) if mode.kind_of?(UserMode)
+      }
+      @users.delete(user)
+    end
+
+    # The channel prefix
+    #
+    def prefix
+      name[0].chr
+    end
+
+    # A channel is local to a server if it has the '&' prefix
+    #
+    def local?
+      name[0] == 0x26
+    end
+
+    # A channel is modeless if it has the '+' prefix
+    #
+    def modeless?
+      name[0] == 0x2b
+    end
+
+    # A channel is safe if it has the '!' prefix
+    #
+    def safe?
+      name[0] == 0x21
+    end
+
+    # A channel is normal if it has the '#' prefix
+    #
+    def normal?
+      name[0] == 0x23
+    end
+
+    # Create a new mode
+    #
+    def create_mode(sym, kl)
+      @mode[sym.to_sym] = kl.new(self)
+    end
+
+    def modes_of(user)
+      l = []
+      @mode.map { |s, m|
+        l << s if (m.class <= UserMode and m.list[user])
+      }
+      l
+    end
+
+    def has_op?(user)
+      @mode.has_key?(:o) and @mode[:o].list[user]
+    end
+
+    def has_voice?(user)
+      @mode.has_key?(:v) and @mode[:v].list[user]
+    end
+  end
+
+
+  # A ChannelList is an ArrayOf <code>Channel</code>s
+  #
+  class ChannelList < ArrayOf
+
+    # Create a new ChannelList, optionally filling it with the elements from
+    # the Array argument fed to it.
+    #
+    def initialize(ar=[])
+      super(Channel, ar)
+    end
+
+    # Convenience method: convert the ChannelList to a list of channel names.
+    # The indices are preserved
+    #
+    def names
+      self.map { |chan| chan.name }
+    end
+
+  end
+
+end
+
+
+class String
+
+  # We keep extending String, this time adding a method that converts a
+  # String into an Irc::Channel object
+  #
+  def to_irc_channel(opts={})
+    Irc::Channel.new(self, opts)
+  end
+
+end
+
+
+module Irc
+
+
+  # An IRC Server represents the Server the client is connected to.
+  #
+  class Server
+
+    attr_reader :hostname, :version, :usermodes, :chanmodes
+    alias :to_s :hostname
+    attr_reader :supports, :capabilities
+
+    attr_reader :channels, :users
+
+    # TODO Ho
+    def channel_names
+      @channels.map { |ch| ch.downcase }
+    end
+
+    # TODO Ho
+    def user_nicks
+      @users.map { |u| u.downcase }
+    end
+
+    def inspect
+      chans, users = [@channels, @users].map {|d|
+        d.sort { |a, b|
+          a.downcase <=> b.downcase
+        }.map { |x|
+          x.inspect
+        }
+      }
+
+      str = self.__to_s__[0..-2]
+      str << " @hostname=#{hostname}"
+      str << " @channels=#{chans}"
+      str << " @users=#{users}"
+      str << ">"
+    end
+
+    # Create a new Server, with all instance variables reset to nil (for
+    # scalar variables), empty channel and user lists and @supports
+    # initialized to the default values for all known supported features.
+    #
+    def initialize
+      @hostname = @version = @usermodes = @chanmodes = nil
+
+      @channels = ChannelList.new
+
+      @users = UserList.new
+
+      reset_capabilities
+    end
+
+    # Resets the server capabilities
+    #
+    def reset_capabilities
+      @supports = {
+        :casemapping => 'rfc1459'.to_irc_casemap,
+        :chanlimit => {},
+        :chanmodes => {
+          :typea => nil, # Type A: address lists
+          :typeb => nil, # Type B: needs a parameter
+          :typec => nil, # Type C: needs a parameter when set
+          :typed => nil  # Type D: must not have a parameter
+        },
+        :channellen => 50,
+        :chantypes => "#&!+",
+        :excepts => nil,
+        :idchan => {},
+        :invex => nil,
+        :kicklen => nil,
+        :maxlist => {},
+        :modes => 3,
+        :network => nil,
+        :nicklen => 9,
+        :prefix => {
+          :modes => [:o, :v],
+          :prefixes => [:"@", :+]
+        },
+        :safelist => nil,
+        :statusmsg => nil,
+        :std => nil,
+        :targmax => {},
+        :topiclen => nil
+      }
+      @capabilities = {}
+    end
+
+    # Convert a mode (o, v, h, ...) to the corresponding
+    # prefix (@, +, %, ...). See also mode_for_prefix
+    def prefix_for_mode(mode)
+      return @supports[:prefix][:prefixes][
+        @supports[:prefix][:modes].index(mode.to_sym)
+      ]
+    end
+
+    # Convert a prefix (@, +, %, ...) to the corresponding
+    # mode (o, v, h, ...). See also prefix_for_mode
+    def mode_for_prefix(pfx)
+      return @supports[:prefix][:modes][
+        @supports[:prefix][:prefixes].index(pfx.to_sym)
+      ]
+    end
+
+    # Resets the Channel and User list
+    #
+    def reset_lists
+      @users.reverse_each { |u|
+        delete_user(u)
+      }
+      @channels.reverse_each { |u|
+        delete_channel(u)
+      }
+    end
+
+    # Clears the server
+    #
+    def clear
+      reset_lists
+      reset_capabilities
+      @hostname = @version = @usermodes = @chanmodes = nil
+    end
+
+    # This method is used to parse a 004 RPL_MY_INFO line
+    #
+    def parse_my_info(line)
+      ar = line.split(' ')
+      @hostname = ar[0]
+      @version = ar[1]
+      @usermodes = ar[2]
+      @chanmodes = ar[3]
+    end
+
+    def noval_warn(key, val, &block)
+      if val
+        yield if block_given?
+      else
+        warn "No #{key.to_s.upcase} value"
+      end
+    end
+
+    def val_warn(key, val, &block)
+      if val == true or val == false or val.nil?
+        yield if block_given?
+      else
+        warn "No #{key.to_s.upcase} value must be specified, got #{val}"
+      end
+    end
+    private :noval_warn, :val_warn
+
+    # This method is used to parse a 005 RPL_ISUPPORT line
+    #
+    # See the RPL_ISUPPORT draft[http://www.irc.org/tech_docs/draft-brocklesby-irc-isupport-03.txt]
+    #
+    def parse_isupport(line)
+      debug "Parsing ISUPPORT #{line.inspect}"
+      ar = line.split(' ')
+      reparse = ""
+      ar.each { |en|
+        prekey, val = en.split('=', 2)
+        if prekey =~ /^-(.*)/
+          key = $1.downcase.to_sym
+          val = false
+        else
+          key = prekey.downcase.to_sym
+        end
+        case key
+        when :casemapping
+          noval_warn(key, val) {
+            @supports[key] = val.to_irc_casemap
+          }
+        when :chanlimit, :idchan, :maxlist, :targmax
+          noval_warn(key, val) {
+            groups = val.split(',')
+            groups.each { |g|
+              k, v = g.split(':')
+              @supports[key][k] = v.to_i || 0
+              if @supports[key][k] == 0
+                warn "Deleting #{key} limit of 0 for #{k}"
+                @supports[key].delete(k)
+              end
+            }
+          }
+        when :chanmodes
+          noval_warn(key, val) {
+            groups = val.split(',')
+            @supports[key][:typea] = groups[0].scan(/./).map { |x| x.to_sym}
+            @supports[key][:typeb] = groups[1].scan(/./).map { |x| x.to_sym}
+            @supports[key][:typec] = groups[2].scan(/./).map { |x| x.to_sym}
+            @supports[key][:typed] = groups[3].scan(/./).map { |x| x.to_sym}
+          }
+        when :channellen, :kicklen, :modes, :topiclen
+          if val
+            @supports[key] = val.to_i
+          else
+            @supports[key] = nil
+          end
+        when :chantypes
+          @supports[key] = val # can also be nil
+        when :excepts
+          val ||= 'e'
+          @supports[key] = val
+        when :invex
+          val ||= 'I'
+          @supports[key] = val
+        when :maxchannels
+          noval_warn(key, val) {
+            reparse += "CHANLIMIT=(chantypes):#{val} "
+          }
+        when :maxtargets
+          noval_warn(key, val) {
+            @supports[:targmax]['PRIVMSG'] = val.to_i
+            @supports[:targmax]['NOTICE'] = val.to_i
+          }
+        when :network
+          noval_warn(key, val) {
+            @supports[key] = val
+          }
+        when :nicklen
+          noval_warn(key, val) {
+            @supports[key] = val.to_i
+          }
+        when :prefix
+          if val
+            val.scan(/\((.*)\)(.*)/) { |m, p|
+              @supports[key][:modes] = m.scan(/./).map { |x| x.to_sym}
+              @supports[key][:prefixes] = p.scan(/./).map { |x| x.to_sym}
+            }
+          else
+            @supports[key][:modes] = nil
+            @supports[key][:prefixes] = nil
+          end
+        when :safelist
+          val_warn(key, val) {
+            @supports[key] = val.nil? ? true : val
+          }
+        when :statusmsg
+          noval_warn(key, val) {
+            @supports[key] = val.scan(/./)
+          }
+        when :std
+          noval_warn(key, val) {
+            @supports[key] = val.split(',')
+          }
+        else
+          @supports[key] =  val.nil? ? true : val
+        end
+      }
+      reparse.gsub!("(chantypes)",@supports[:chantypes])
+      parse_isupport(reparse) unless reparse.empty?
+    end
+
+    # Returns the casemap of the server.
+    #
+    def casemap
+      @supports[:casemapping]
+    end
+
+    # Returns User or Channel depending on what _name_ can be
+    # a name of
+    #
+    def user_or_channel?(name)
+      if supports[:chantypes].include?(name[0])
+        return Channel
+      else
+        return User
+      end
+    end
+
+    # Returns the actual User or Channel object matching _name_
+    #
+    def user_or_channel(name)
+      if supports[:chantypes].include?(name[0])
+        return channel(name)
+      else
+        return user(name)
+      end
+    end
+
+    # Checks if the receiver already has a channel with the given _name_
+    #
+    def has_channel?(name)
+      return false if name.nil_or_empty?
+      channel_names.index(name.irc_downcase(casemap))
+    end
+    alias :has_chan? :has_channel?
+
+    # Returns the channel with name _name_, if available
+    #
+    def get_channel(name)
+      return nil if name.nil_or_empty?
+      idx = has_channel?(name)
+      channels[idx] if idx
+    end
+    alias :get_chan :get_channel
+
+    # Create a new Channel object bound to the receiver and add it to the
+    # list of <code>Channel</code>s on the receiver, unless the channel was
+    # present already. In this case, the default action is to raise an
+    # exception, unless _fails_ is set to false.  An exception can also be
+    # raised if _str_ is nil or empty, again only if _fails_ is set to true;
+    # otherwise, the method just returns nil
+    #
+    def new_channel(name, topic=nil, users=[], fails=true)
+      if name.nil_or_empty?
+        raise "Tried to look for empty or nil channel name #{name.inspect}" if fails
+        return nil
+      end
+      ex = get_chan(name)
+      if ex
+        raise "Channel #{name} already exists on server #{self}" if fails
+        return ex
+      else
+
+        prefix = name[0].chr
+
+        # Give a warning if the new Channel goes over some server limits.
+        #
+        # FIXME might need to raise an exception
+        #
+        warn "#{self} doesn't support channel prefix #{prefix}" unless @supports[:chantypes].include?(prefix)
+        warn "#{self} doesn't support channel names this long (#{name.length} > #{@supports[:channellen]})" unless name.length <= @supports[:channellen]
+
+        # Next, we check if we hit the limit for channels of type +prefix+
+        # if the server supports +chanlimit+
+        #
+        @supports[:chanlimit].keys.each { |k|
+          next unless k.include?(prefix)
+          count = 0
+          channel_names.each { |n|
+            count += 1 if k.include?(n[0])
+          }
+          # raise IndexError, "Already joined #{count} channels with prefix #{k}" if count == @supports[:chanlimit][k]
+          warn "Already joined #{count}/#{@supports[:chanlimit][k]} channels with prefix #{k}, we may be going over server limits" if count >= @supports[:chanlimit][k]
+        }
+
+        # So far, everything is fine. Now create the actual Channel
+        #
+        chan = Channel.new(name, topic, users, :server => self)
+
+        # We wade through +prefix+ and +chanmodes+ to create appropriate
+        # lists and flags for this channel
+
+        @supports[:prefix][:modes].each { |mode|
+          chan.create_mode(mode, Channel::UserMode)
+        } if @supports[:prefix][:modes]
+
+        @supports[:chanmodes].each { |k, val|
+          if val
+            case k
+            when :typea
+              val.each { |mode|
+                chan.create_mode(mode, Channel::ModeTypeA)
+              }
+            when :typeb
+              val.each { |mode|
+                chan.create_mode(mode, Channel::ModeTypeB)
+              }
+            when :typec
+              val.each { |mode|
+                chan.create_mode(mode, Channel::ModeTypeC)
+              }
+            when :typed
+              val.each { |mode|
+                chan.create_mode(mode, Channel::ModeTypeD)
+              }
+            end
+          end
+        }
+
+        @channels << chan
+        # debug "Created channel #{chan.inspect}"
+        return chan
+      end
+    end
+
+    # Returns the Channel with the given _name_ on the server,
+    # creating it if necessary. This is a short form for
+    # new_channel(_str_, nil, [], +false+)
+    #
+    def channel(str)
+      new_channel(str,nil,[],false)
+    end
+
+    # Remove Channel _name_ from the list of <code>Channel</code>s
+    #
+    def delete_channel(name)
+      idx = has_channel?(name)
+      raise "Tried to remove unmanaged channel #{name}" unless idx
+      @channels.delete_at(idx)
+    end
+
+    # Checks if the receiver already has a user with the given _nick_
+    #
+    def has_user?(nick)
+      return false if nick.nil_or_empty?
+      user_nicks.index(nick.irc_downcase(casemap))
+    end
+
+    # Returns the user with nick _nick_, if available
+    #
+    def get_user(nick)
+      idx = has_user?(nick)
+      @users[idx] if idx
+    end
+
+    # Create a new User object bound to the receiver and add it to the list
+    # of <code>User</code>s on the receiver, unless the User was present
+    # already. In this case, the default action is to raise an exception,
+    # unless _fails_ is set to false. An exception can also be raised
+    # if _str_ is nil or empty, again only if _fails_ is set to true;
+    # otherwise, the method just returns nil
+    #
+    def new_user(str, fails=true)
+      if str.nil_or_empty?
+        raise "Tried to look for empty or nil user name #{str.inspect}" if fails
+        return nil
+      end
+      tmp = str.to_irc_user(:server => self)
+      old = get_user(tmp.nick)
+      # debug "Tmp: #{tmp.inspect}"
+      # debug "Old: #{old.inspect}"
+      if old
+        # debug "User already existed as #{old.inspect}"
+        if tmp.known?
+          if old.known?
+            # debug "Both were known"
+            # Do not raise an error: things like Freenode change the hostname after identification
+            warning "User #{tmp.nick} has inconsistent Netmasks! #{self} knows #{old.inspect} but access was tried with #{tmp.inspect}" if old != tmp
+            raise "User #{tmp} already exists on server #{self}" if fails
+          end
+          if old.fullform.downcase != tmp.fullform.downcase
+            old.replace(tmp)
+            # debug "Known user now #{old.inspect}"
+          end
+        end
+        return old
+      else
+        warn "#{self} doesn't support nicknames this long (#{tmp.nick.length} > #{@supports[:nicklen]})" unless tmp.nick.length <= @supports[:nicklen]
+        @users << tmp
+        return @users.last
+      end
+    end
+
+    # Returns the User with the given Netmask on the server,
+    # creating it if necessary. This is a short form for
+    # new_user(_str_, +false+)
+    #
+    def user(str)
+      new_user(str, false)
+    end
+
+    # Deletes User _user_ from Channel _channel_
+    #
+    def delete_user_from_channel(user, channel)
+      channel.delete_user(user)
+    end
+
+    # Remove User _someuser_ from the list of <code>User</code>s.
+    # _someuser_ must be specified with the full Netmask.
+    #
+    def delete_user(someuser)
+      idx = has_user?(someuser)
+      raise "Tried to remove unmanaged user #{user}" unless idx
+      have = self.user(someuser)
+      @channels.each { |ch|
+        delete_user_from_channel(have, ch)
+      }
+      @users.delete_at(idx)
+    end
+
+    # Create a new Netmask object with the appropriate casemap
+    #
+    def new_netmask(str)
+      str.to_irc_netmask(:server => self)
+    end
+
+    # Finds all <code>User</code>s on server whose Netmask matches _mask_
+    #
+    def find_users(mask)
+      nm = new_netmask(mask)
+      @users.inject(UserList.new) {
+        |list, user|
+        if user.user == "*" or user.host == "*"
+          list << user if user.nick.irc_downcase(casemap) =~ nm.nick.irc_downcase(casemap).to_irc_regexp
+        else
+          list << user if user.matches?(nm)
+        end
+        list
+      }
+    end
+
+  end
+
+end
+
diff --git a/lib/rbot/plugins/opmeh.rb b/lib/rbot/plugins/opmeh.rb
index 2776de60..0702c906 100644
--- a/lib/rbot/plugins/opmeh.rb
+++ b/lib/rbot/plugins/opmeh.rb
@@ -1,19 +1,19 @@
-class OpMehPlugin < Plugin

-

-  def help(plugin, topic="")

-    return "opmeh <channel> => grant user ops in <channel>"

-  end

-

-  def privmsg(m)

-    if(m.params)

-      channel = m.params

-    else

-      channel = m.channel

-    end

-    target = m.sourcenick

-    @bot.sendq("MODE #{channel} +o #{target}")

-    m.okay

-  end

-end

-plugin = OpMehPlugin.new

-plugin.register("opmeh")

+class OpMehPlugin < Plugin
+
+  def help(plugin, topic="")
+    return "opmeh <channel> => grant user ops in <channel>"
+  end
+
+  def privmsg(m)
+    if(m.params)
+      channel = m.params
+    else
+      channel = m.channel
+    end
+    target = m.sourcenick
+    @bot.sendq("MODE #{channel} +o #{target}")
+    m.okay
+  end
+end
+plugin = OpMehPlugin.new
+plugin.register("opmeh")