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Edit File : protocol.rb \| Size : 7.84 KB
# # = net/protocol.rb # #-- # Copyright (c) 1999-2004 Yukihiro Matsumoto # Copyright (c) 1999-2004 Minero Aoki # # written and maintained by Minero Aoki <aamine@loveruby.net> # # This program is free software. You can re-distribute and/or # modify this program under the same terms as Ruby itself, # Ruby Distribute License or GNU General Public License. # # $Id: protocol.rb 38830 2013-01-15 07:23:48Z usa $ #++ # # WARNING: This file is going to remove. # Do not rely on the implementation written in this file. # require 'socket' require 'timeout' module Net # :nodoc: class Protocol #:nodoc: internal use only private def Protocol.protocol_param(name, val) module_eval(<<-End, __FILE__, __LINE__ + 1) def #{name} #{val} end End end end class ProtocolError < StandardError; end class ProtoSyntaxError < ProtocolError; end class ProtoFatalError < ProtocolError; end class ProtoUnknownError < ProtocolError; end class ProtoServerError < ProtocolError; end class ProtoAuthError < ProtocolError; end class ProtoCommandError < ProtocolError; end class ProtoRetriableError < ProtocolError; end ProtocRetryError = ProtoRetriableError class BufferedIO #:nodoc: internal use only def initialize(io) @io = io @read_timeout = 60 @continue_timeout = nil @debug_output = nil @rbuf = '' end attr_reader :io attr_accessor :read_timeout attr_accessor :continue_timeout attr_accessor :debug_output def inspect "#<#{self.class} io=#{@io}>" end def eof? @io.eof? end def closed? @io.closed? end def close @io.close end # # Read # public def read(len, dest = '', ignore_eof = false) LOG "reading #{len} bytes..." read_bytes = 0 begin while read_bytes + @rbuf.size < len dest << (s = rbuf_consume(@rbuf.size)) read_bytes += s.size rbuf_fill end dest << (s = rbuf_consume(len - read_bytes)) read_bytes += s.size rescue EOFError raise unless ignore_eof end LOG "read #{read_bytes} bytes" dest end def read_all(dest = '') LOG 'reading all...' read_bytes = 0 begin while true dest << (s = rbuf_consume(@rbuf.size)) read_bytes += s.size rbuf_fill end rescue EOFError ; end LOG "read #{read_bytes} bytes" dest end def readuntil(terminator, ignore_eof = false) begin until idx = @rbuf.index(terminator) rbuf_fill end return rbuf_consume(idx + terminator.size) rescue EOFError raise unless ignore_eof return rbuf_consume(@rbuf.size) end end def readline readuntil("\n").chop end private BUFSIZE = 1024 * 16 def rbuf_fill begin @rbuf << @io.read_nonblock(BUFSIZE) rescue IO::WaitReadable if IO.select([@io], nil, nil, @read_timeout) retry else raise Timeout::Error end rescue IO::WaitWritable # OpenSSL::Buffering#read_nonblock may fail with IO::WaitWritable. # http://www.openssl.org/support/faq.html#PROG10 if IO.select(nil, [@io], nil, @read_timeout) retry else raise Timeout::Error end end end def rbuf_consume(len) s = @rbuf.slice!(0, len) @debug_output << %Q[-> #{s.dump}\n] if @debug_output s end # # Write # public def write(str) writing { write0 str } end alias << write def writeline(str) writing { write0 str + "\r\n" } end private def writing @written_bytes = 0 @debug_output << '<- ' if @debug_output yield @debug_output << "\n" if @debug_output bytes = @written_bytes @written_bytes = nil bytes end def write0(str) @debug_output << str.dump if @debug_output len = @io.write(str) @written_bytes += len len end # # Logging # private def LOG_off @save_debug_out = @debug_output @debug_output = nil end def LOG_on @debug_output = @save_debug_out end def LOG(msg) return unless @debug_output @debug_output << msg + "\n" end end class InternetMessageIO < BufferedIO #:nodoc: internal use only def initialize(io) super @wbuf = nil end # # Read # def each_message_chunk LOG 'reading message...' LOG_off() read_bytes = 0 while (line = readuntil("\r\n")) != ".\r\n" read_bytes += line.size yield line.sub(/\A\./, '') end LOG_on() LOG "read message (#{read_bytes} bytes)" end # library private (cannot handle 'break') def each_list_item while (str = readuntil("\r\n")) != ".\r\n" yield str.chop end end def write_message_0(src) prev = @written_bytes each_crlf_line(src) do \|line\| write0 line.sub(/\A\./, '..') end @written_bytes - prev end # # Write # def write_message(src) LOG "writing message from #{src.class}" LOG_off() len = writing { using_each_crlf_line { write_message_0 src } } LOG_on() LOG "wrote #{len} bytes" len end def write_message_by_block(&block) LOG 'writing message from block' LOG_off() len = writing { using_each_crlf_line { begin block.call(WriteAdapter.new(self, :write_message_0)) rescue LocalJumpError # allow `break' from writer block end } } LOG_on() LOG "wrote #{len} bytes" len end private def using_each_crlf_line @wbuf = '' yield if not @wbuf.empty? # unterminated last line write0 @wbuf.chomp + "\r\n" elsif @written_bytes == 0 # empty src write0 "\r\n" end write0 ".\r\n" @wbuf = nil end def each_crlf_line(src) buffer_filling(@wbuf, src) do while line = @wbuf.slice!(/\A[^\r\n](?:\n\|\r(?:\n\|(?!\z)))/) yield line.chomp("\n") + "\r\n" end end end def buffer_filling(buf, src) case src when String # for speeding up. 0.step(src.size - 1, 1024) do \|i\| buf << src[i, 1024] yield end when File # for speeding up. while s = src.read(1024) buf << s yield end else # generic reader src.each do \|str\| buf << str yield if buf.size > 1024 end yield unless buf.empty? end end end # # The writer adapter class # class WriteAdapter def initialize(socket, method) @socket = socket @method_id = method end def inspect "#<#{self.class} socket=#{@socket.inspect}>" end def write(str) @socket.__send__(@method_id, str) end alias print write def <<(str) write str self end def puts(str = '') write str.chomp("\n") + "\n" end def printf(args) write sprintf(*args) end end class ReadAdapter #:nodoc: internal use only def initialize(block) @block = block end def inspect "#<#{self.class}>" end def <<(str) call_block(str, &@block) if @block end private # This method is needed because @block must be called by yield, # not Proc#call. You can see difference when using `break' in # the block. def call_block(str) yield str end end module NetPrivate #:nodoc: obsolete Socket = ::Net::InternetMessageIO end end # module Net Back

Edit File : protocol.rb | Size : 7.84 KB

#
# = net/protocol.rb
#
#--
# Copyright (c) 1999-2004 Yukihiro Matsumoto
# Copyright (c) 1999-2004 Minero Aoki
#
# written and maintained by Minero Aoki <aamine@loveruby.net>
#
# This program is free software. You can re-distribute and/or
# modify this program under the same terms as Ruby itself,
# Ruby Distribute License or GNU General Public License.
#
# $Id: protocol.rb 38830 2013-01-15 07:23:48Z usa $
#++
#
# WARNING: This file is going to remove.
# Do not rely on the implementation written in this file.
#

require 'socket'
require 'timeout'

module Net # :nodoc:

class Protocol   #:nodoc: internal use only
    private
    def Protocol.protocol_param(name, val)
      module_eval(<<-End, __FILE__, __LINE__ + 1)
        def #{name}
          #{val}
        end
      End
    end
  end

class ProtocolError          < StandardError; end
  class ProtoSyntaxError       < ProtocolError; end
  class ProtoFatalError        < ProtocolError; end
  class ProtoUnknownError      < ProtocolError; end
  class ProtoServerError       < ProtocolError; end
  class ProtoAuthError         < ProtocolError; end
  class ProtoCommandError      < ProtocolError; end
  class ProtoRetriableError    < ProtocolError; end
  ProtocRetryError = ProtoRetriableError

class BufferedIO   #:nodoc: internal use only
    def initialize(io)
      @io = io
      @read_timeout = 60
      @continue_timeout = nil
      @debug_output = nil
      @rbuf = ''
    end

attr_reader :io
    attr_accessor :read_timeout
    attr_accessor :continue_timeout
    attr_accessor :debug_output

def inspect
      "#<#{self.class} io=#{@io}>"
    end

def eof?
      @io.eof?
    end

def closed?
      @io.closed?
    end

def close
      @io.close
    end

#
    # Read
    #

public

def read(len, dest = '', ignore_eof = false)
      LOG "reading #{len} bytes..."
      read_bytes = 0
      begin
        while read_bytes + @rbuf.size < len
          dest << (s = rbuf_consume(@rbuf.size))
          read_bytes += s.size
          rbuf_fill
        end
        dest << (s = rbuf_consume(len - read_bytes))
        read_bytes += s.size
      rescue EOFError
        raise unless ignore_eof
      end
      LOG "read #{read_bytes} bytes"
      dest
    end

def read_all(dest = '')
      LOG 'reading all...'
      read_bytes = 0
      begin
        while true
          dest << (s = rbuf_consume(@rbuf.size))
          read_bytes += s.size
          rbuf_fill
        end
      rescue EOFError
        ;
      end
      LOG "read #{read_bytes} bytes"
      dest
    end

def readuntil(terminator, ignore_eof = false)
      begin
        until idx = @rbuf.index(terminator)
          rbuf_fill
        end
        return rbuf_consume(idx + terminator.size)
      rescue EOFError
        raise unless ignore_eof
        return rbuf_consume(@rbuf.size)
      end
    end

def readline
      readuntil("\n").chop
    end

private

BUFSIZE = 1024 * 16

def rbuf_fill
      begin
        @rbuf << @io.read_nonblock(BUFSIZE)
      rescue IO::WaitReadable
        if IO.select([@io], nil, nil, @read_timeout)
          retry
        else
          raise Timeout::Error
        end
      rescue IO::WaitWritable
        # OpenSSL::Buffering#read_nonblock may fail with IO::WaitWritable.
        # http://www.openssl.org/support/faq.html#PROG10
        if IO.select(nil, [@io], nil, @read_timeout)
          retry
        else
          raise Timeout::Error
        end
      end
    end

def rbuf_consume(len)
      s = @rbuf.slice!(0, len)
      @debug_output << %Q[-> #{s.dump}\n] if @debug_output
      s
    end

#
    # Write
    #

public

def write(str)
      writing {
        write0 str
      }
    end

alias << write

def writeline(str)
      writing {
        write0 str + "\r\n"
      }
    end

private

def writing
      @written_bytes = 0
      @debug_output << '<- ' if @debug_output
      yield
      @debug_output << "\n" if @debug_output
      bytes = @written_bytes
      @written_bytes = nil
      bytes
    end

def write0(str)
      @debug_output << str.dump if @debug_output
      len = @io.write(str)
      @written_bytes += len
      len
    end

#
    # Logging
    #

private

def LOG_off
      @save_debug_out = @debug_output
      @debug_output = nil
    end

def LOG_on
      @debug_output = @save_debug_out
    end

def LOG(msg)
      return unless @debug_output
      @debug_output << msg + "\n"
    end
  end

class InternetMessageIO < BufferedIO   #:nodoc: internal use only
    def initialize(io)
      super
      @wbuf = nil
    end

#
    # Read
    #

def each_message_chunk
      LOG 'reading message...'
      LOG_off()
      read_bytes = 0
      while (line = readuntil("\r\n")) != ".\r\n"
        read_bytes += line.size
        yield line.sub(/\A\./, '')
      end
      LOG_on()
      LOG "read message (#{read_bytes} bytes)"
    end

# *library private* (cannot handle 'break')
    def each_list_item
      while (str = readuntil("\r\n")) != ".\r\n"
        yield str.chop
      end
    end

def write_message_0(src)
      prev = @written_bytes
      each_crlf_line(src) do |line|
        write0 line.sub(/\A\./, '..')
      end
      @written_bytes - prev
    end

#
    # Write
    #

def write_message(src)
      LOG "writing message from #{src.class}"
      LOG_off()
      len = writing {
        using_each_crlf_line {
          write_message_0 src
        }
      }
      LOG_on()
      LOG "wrote #{len} bytes"
      len
    end

def write_message_by_block(&block)
      LOG 'writing message from block'
      LOG_off()
      len = writing {
        using_each_crlf_line {
          begin
            block.call(WriteAdapter.new(self, :write_message_0))
          rescue LocalJumpError
            # allow `break' from writer block
          end
        }
      }
      LOG_on()
      LOG "wrote #{len} bytes"
      len
    end

private

def using_each_crlf_line
      @wbuf = ''
      yield
      if not @wbuf.empty?   # unterminated last line
        write0 @wbuf.chomp + "\r\n"
      elsif @written_bytes == 0   # empty src
        write0 "\r\n"
      end
      write0 ".\r\n"
      @wbuf = nil
    end

def each_crlf_line(src)
      buffer_filling(@wbuf, src) do
        while line = @wbuf.slice!(/\A[^\r\n]*(?:\n|\r(?:\n|(?!\z)))/)
          yield line.chomp("\n") + "\r\n"
        end
      end
    end

def buffer_filling(buf, src)
      case src
      when String    # for speeding up.
        0.step(src.size - 1, 1024) do |i|
          buf << src[i, 1024]
          yield
        end
      when File    # for speeding up.
        while s = src.read(1024)
          buf << s
          yield
        end
      else    # generic reader
        src.each do |str|
          buf << str
          yield if buf.size > 1024
        end
        yield unless buf.empty?
      end
    end
  end

#
  # The writer adapter class
  #
  class WriteAdapter
    def initialize(socket, method)
      @socket = socket
      @method_id = method
    end

def inspect
      "#<#{self.class} socket=#{@socket.inspect}>"
    end

def write(str)
      @socket.__send__(@method_id, str)
    end

alias print write

def <<(str)
      write str
      self
    end

def puts(str = '')
      write str.chomp("\n") + "\n"
    end

def printf(*args)
      write sprintf(*args)
    end
  end

class ReadAdapter   #:nodoc: internal use only
    def initialize(block)
      @block = block
    end

def inspect
      "#<#{self.class}>"
    end

def <<(str)
      call_block(str, &@block) if @block
    end

private

# This method is needed because @block must be called by yield,
    # not Proc#call.  You can see difference when using `break' in
    # the block.
    def call_block(str)
      yield str
    end
  end

module NetPrivate   #:nodoc: obsolete
    Socket = ::Net::InternetMessageIO
  end

end   # module Net

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