90 lines
2.5 KiB
Ruby
90 lines
2.5 KiB
Ruby
# -*- coding: binary -*-
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module Msf
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module Java
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module Jmx
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# This module provides methods which help to handle data
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# used by Java JMX
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module Util
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# Extracts a Rex::Java::Serialization::Model::NewObject from
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# a Rex::Java::Serialization::Model::Stream
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#
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# @param stream [Rex::Java::Serialization::Model::Stream] the stream to extract the object from
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# @param id [Fixnum] the content position storing the object
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# @return [Rex::Java::Serialization::Model::NewObject, nil] the extracted object if success, nil otherwise
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def extract_object(stream, id)
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new_object = nil
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if stream.contents[id]
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new_object = stream.contents[id]
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else
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return nil
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end
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unless new_object.class == Rex::Java::Serialization::Model::NewObject
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return nil
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end
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new_object.class_desc.description.class_name.contents
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end
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# Extracts an string from an IO
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#
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# @param io [IO] the io to extract the string from
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# @return [String, nil] the extracted string if success, nil otherwise
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def extract_string(io)
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raw_length = io.read(2)
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unless raw_length && raw_length.length == 2
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return nil
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end
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length = raw_length.unpack('n')[0]
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string = io.read(length)
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unless string && string.length == length
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return nil
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end
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string
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end
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# Extracts an int from an IO
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#
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# @param io [IO] the io to extract the int from
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# @return [Fixnum, nil] the extracted int if success, nil otherwise
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def extract_int(io)
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int_raw = io.read(4)
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unless int_raw && int_raw.length == 4
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return nil
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end
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int = int_raw.unpack('N')[0]
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int
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end
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# Extracts an UnicastRef (endpoint) information from an IO
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#
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# @param io [IO] the io to extract the int from
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# @return [Hash, nil] the extracted int if success, nil otherwise
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def extract_unicast_ref(io)
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ref = extract_string(io)
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unless ref && ref == 'UnicastRef'
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return nil
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end
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address = extract_string(io)
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return nil unless address
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port = extract_int(io)
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return nil unless port
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id = io.read
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{ address: address, port: port, id: id }
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end
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end
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end
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end
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end
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