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#--
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# CyborgHood, a distributed system management software.
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# Copyright (c) 2009-2010 Marc Dequènes (Duck) <Duck@DuckCorp.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#++
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require 'cyborghood/cyborg/interface'
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require 'cyborghood/cyborg/conversation'
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require 'cyborghood/cyborg/botnet_dsl'
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require 'set'
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module CyborgHood
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# default interface if not overridden
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# a mere "BotClient" would then always have a default basic interface
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class EmptyInterface
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include CyborgServerInterface
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include CyborgServerRootInterfaceAddon
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end
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module BotNetClientUNIXSocket
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def identifier_prefix
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"unix_socket"
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end
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def setup
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super
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@pending_conversation_close = Set.new
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end
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def peer_socket(peer)
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File.join(Config::RUN_DIR, peer.downcase + ".sock")
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end
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def contact_peer(peer, &block)
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if @comm_list.has_key? peer
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block.call @comm_list[peer]
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else
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callback = proc do |conversation|
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block.call conversation
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@pending_conversation_close << conversation.peer_id
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end
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begin
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EventMachine.connect_unix_domain(peer_socket(peer), Conversation, self, block)
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rescue
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block.call false
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end
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end
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end
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# start of DSL
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def conversation_with(peer, &block)
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BotnetDSL::Conversation.run_dsl(self, peer, &block)
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end
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end
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module BotNet
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attr_reader :interface
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def self.included(base)
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case Config.instance.botnet.connection_type
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when 'unix_socket'
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return base.class_eval("include BotNetClientUNIXSocket")
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else
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raise CyberError.new(:unrecoverable, "config", "Unknown botnet connection type")
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end
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end
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def setup
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super
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@comm_list = {}
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end
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# used to quit properly and later to reuse communication channels
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def register_communication(peer, conversation)
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@comm_list[peer] = conversation
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end
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def unregister_communication(peer)
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@comm_list.delete(peer)
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@pending_conversation_close.delete(peer)
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end
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def ask_to_stop
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@comm_list.values.each {|conv| conv.bye }
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super
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end
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def interface
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EmptyInterface.instance
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end
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protected
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def process_system_notification(msg)
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if msg[:topic] == 'CONVERSATION IDLE'
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peer = @comm_list[msg[:peer]]
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return if peer.nil?
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peer.bye
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else
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super
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end
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end
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def ready_to_stop?
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@comm_list.empty? and super
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end
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end
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end
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