Class: Jabber::Bytestreams::SOCKS5BytestreamsInitiator

Inherits:
SOCKS5Bytestreams show all
Defined in:
lib/xmpp4r/bytestreams/helper/socks5bytestreams/initiator.rb

Overview

SOCKS5Bytestreams implementation for the initiator side

Instance Attribute Summary collapse

Attributes inherited from SOCKS5Bytestreams

#connect_timeout, #streamhost_used

Instance Method Summary collapse

Methods inherited from SOCKS5Bytestreams

#add_streamhost_callback, #close, #flush, query_streamhost, #read, #write

Constructor Details

#initialize(stream, session_id, initiator_jid, target_jid) ⇒ SOCKS5BytestreamsInitiator

Returns a new instance of SOCKS5BytestreamsInitiator



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# File 'lib/xmpp4r/bytestreams/helper/socks5bytestreams/initiator.rb', line 12

def initialize(stream, session_id, initiator_jid, target_jid)
  super
  @streamhosts = []
end

Instance Attribute Details

#streamhostsObject (readonly)

Returns the value of attribute streamhosts



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# File 'lib/xmpp4r/bytestreams/helper/socks5bytestreams/initiator.rb', line 10

def streamhosts
  @streamhosts
end

Instance Method Details

#add_streamhost(streamhost) ⇒ Object

Add a streamhost which will be offered to the target

streamhost

can be:

  • StreamHost

    if already got all information (host/port)

  • SOCKS5BytestreamsServer

    if this is the local streamhost

  • String

    or [JID] if information should be automatically resolved by SOCKS5Bytestreams::query_streamhost



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# File 'lib/xmpp4r/bytestreams/helper/socks5bytestreams/initiator.rb', line 24

def add_streamhost(streamhost)
  if streamhost.kind_of?(StreamHost)
    @streamhosts << streamhost
  elsif streamhost.kind_of?(SOCKS5BytestreamsServer)
    streamhost.each_streamhost(@initiator_jid) { |sh|
      @streamhosts << sh
    }
  elsif streamhost.kind_of?(String) or streamhost.kind_of?(JID)
    @streamhosts << SOCKS5Bytestreams::query_streamhost(@stream, streamhost, @initiator_jid)
  else
    raise "Unknwon streamhost type: #{streamhost.class}"
  end
end

#openObject

Send the configured streamhosts to the target, wait for an answer and connect to the host the target chose.



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# File 'lib/xmpp4r/bytestreams/helper/socks5bytestreams/initiator.rb', line 42

def open
  iq1 = Iq::new(:set, @target_jid)
  iq1.from = @initiator_jid
  bs = iq1.add IqQueryBytestreams.new(@session_id)
  @streamhosts.each { |se|
    bs.add(se)
  }

  peer_used = nil
  @stream.send_with_id(iq1) { |response|
    if response.type == :result and response.query.kind_of?(IqQueryBytestreams)
      peer_used = response.query.streamhost_used
      raise "No streamhost-used" unless peer_used
      raise "Invalid streamhost-used" unless peer_used.jid
    end
    true
  }

  @streamhost_used = nil
  @streamhosts.each { |sh|
    if peer_used.jid == sh.jid
      @streamhost_used = sh
      break
    end
  }
  if @streamhost_used.jid == @initiator_jid
    # This is our own JID, so the target chose SOCKS5BytestreamsServer
    @socks = @streamhost_used.server.peer_sock(stream_address)
    raise "Target didn't connect" unless @socks
    @streamhost_cbs.process(@streamhost_used, :success, nil)
  else
    begin
      @socks = connect_socks(@streamhost_used)
    rescue Exception => e
      Jabber::debuglog("SOCKS5 Bytestreams: #{e.class}: #{e}\n#{e.backtrace.join("\n")}")
      @streamhost_cbs.process(@streamhost_used, :failure, e)
      raise e
    end
    iq2 = Iq::new(:set, @streamhost_used.jid)
    iq2.add(IqQueryBytestreams.new(@session_id)).activate = @target_jid.to_s
    @stream.send_with_id(iq2) { |reply|
      reply.type == :result
    }
  end
end