Module: Rex::Java::Serialization::Model::Contents

Includes:
Rex::Java::Serialization
Included in:
Annotation, ClassDesc, Field, NewArray, NewEnum, NewObject, Stream
Defined in:
lib/rex/java/serialization/model/contents.rb

Constant Summary

Constants included from Rex::Java::Serialization

BASE_WIRE_HANDLE, OBJECT_TYPE_CODES, PRIMITIVE_TYPE_CODES, SC_BLOCK_DATA, SC_ENUM, SC_EXTERNALIZABLE, SC_SERIALIZABLE, SC_WRITE_METHOD, STREAM_MAGIC, STREAM_VERSION, TC_ARRAY, TC_BLOCKDATA, TC_BLOCKDATALONG, TC_CLASS, TC_CLASSDESC, TC_ENDBLOCKDATA, TC_ENUM, TC_EXCEPTION, TC_LONGSTRING, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING, TYPE_CODES

Instance Method Summary collapse

Instance Method Details

#decode_content(io, stream) ⇒ Rex::Java::Serialization::Model::Element

Deserializes a content

Parameters:

  • io (IO) —

    the io to read from

Returns:

Raises:

  • (RuntimeError) —

    if deserialization doesn't succeed or unsupported content



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# File 'lib/rex/java/serialization/model/contents.rb', line 15

def decode_content(io, stream)
  opcode = io.read(1)
  raise ::RuntimeError, 'Failed to unserialize content' if opcode.nil?
  opcode = opcode.unpack('C')[0]
  content = nil

  case opcode
  when TC_BLOCKDATA
    content = BlockData.decode(io, stream)
  when TC_BLOCKDATALONG
    content = BlockDataLong.decode(io, stream)
  when TC_ENDBLOCKDATA
    content = EndBlockData.decode(io, stream)
  when TC_OBJECT
    content = NewObject.decode(io, stream)
  when TC_CLASS
    content = ClassDesc.decode(io, stream)
  when TC_ARRAY
    content = NewArray.decode(io, stream)
  when TC_STRING
    content = Utf.decode(io, stream)
    stream.add_reference(content) unless stream.nil?
  when TC_LONGSTRING
    content = LongUtf.decode(io, stream)
    stream.add_reference(content) unless stream.nil?
  when TC_ENUM
    content = NewEnum.decode(io, stream)
  when TC_CLASSDESC
    content = NewClassDesc.decode(io, stream)
  when TC_PROXYCLASSDESC
    raise ::RuntimeError, 'Failed to unserialize unsupported TC_PROXYCLASSDESC content'
  when TC_REFERENCE
    content = Reference.decode(io, stream)
  when TC_NULL
    content = NullReference.decode(io, stream)
  when TC_EXCEPTION
    raise ::RuntimeError, 'Failed to unserialize unsupported TC_EXCEPTION content'
  when TC_RESET
    content = Reset.decode(io, stream)
  else
    raise ::RuntimeError, 'Failed to unserialize content'
  end

  content
end

#encode_content(content) ⇒ String

Serializes a content

Parameters:

Returns:

  • (String) —

    if serialization succeeds

Raises:



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# File 'lib/rex/java/serialization/model/contents.rb', line 66

def encode_content(content)
  encoded = ''

  case content
  when BlockData
    encoded << [TC_BLOCKDATA].pack('C')
  when BlockDataLong
    encoded << [TC_BLOCKDATALONG].pack('C')
  when EndBlockData
    encoded << [TC_ENDBLOCKDATA].pack('C')
  when NewObject
    encoded << [TC_OBJECT].pack('C')
  when ClassDesc
    encoded << [TC_CLASS].pack('C')
  when NewArray
    encoded << [TC_ARRAY].pack('C')
  when Utf
    encoded << [TC_STRING].pack('C')
  when LongUtf
    encoded << [TC_LONGSTRING].pack('C')
  when NewEnum
    encoded << [TC_ENUM].pack('C')
  when NewClassDesc
    encoded << [TC_CLASSDESC].pack('C')
  when NullReference
    encoded << [TC_NULL].pack('C')
  when Reset
    encoded << [TC_RESET].pack('C')
  when Reference
    encoded << [TC_REFERENCE].pack('C')
  else
    raise ::RuntimeError, 'Failed to serialize content'
  end

  encoded << content.encode
  encoded
end

#print_class(content) ⇒ String

Creates a print-friendly string representation of the content class

Parameters:

Returns:

  • (String) 


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# File 'lib/rex/java/serialization/model/contents.rb', line 149

def print_class(content)
  content.class.name.split('::').last
end

#print_content(content) ⇒ String

Creates a print-friendly string representation

Parameters:

Returns:

  • (String) 


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# File 'lib/rex/java/serialization/model/contents.rb', line 108

def print_content(content)
  str = ''

  case content
  when BlockData
    str << "#{print_class(content)} { #{content.to_s} }"
  when BlockDataLong
    str << "#{print_class(content)} { #{content.to_s} }"
  when EndBlockData
    str << "#{print_class(content)}"
  when NewObject
    str << "#{print_class(content)} { #{content.to_s} }"
  when ClassDesc
    str << "#{print_class(content)} { #{content.to_s} }"
  when NewArray
    str << "#{print_class(content)} { #{content.to_s} }"
  when Utf
    str << "#{print_class(content)} { #{content.to_s} }"
  when LongUtf
    str << "#{print_class(content)} { #{content.to_s} } "
  when NewEnum
    str << "#{print_class(content)} { #{content.to_s} }"
  when NewClassDesc
    str << "#{print_class(content)} { #{content.to_s} }"
  when NullReference
    str << "#{print_class(content)}"
  when Reset
    str << "#{print_class(content)}"
  when Reference
    str << "#{print_class(content)} { #{content.to_s} }"
  else
    raise ::RuntimeError, 'Failed to serialize content'
  end

  str
end