Class: Mu::Pcap::IP

Inherits:
Packet show all
Defined in:
lib/mu/pcap/ip.rb

Direct Known Subclasses

IPv4, IPv6

Constant Summary collapse

IPPROTO_TCP = 
6
IPPROTO_UDP = 
17
IPPROTO_HOPOPTS = 
0
IPPROTO_ROUTING = 
43
IPPROTO_FRAGMENT = 
44
IPPROTO_AH = 
51
IPPROTO_NONE = 
59
IPPROTO_DSTOPTS = 
60
IPPROTO_SCTP = 
132

Constants inherited from Packet

Packet::IGNORE_UDP_PORTS

Instance Attribute Summary collapse

Attributes inherited from Packet

#payload, #payload_raw

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Packet

#deepdup, #flow_id, isolate_l7, normalize, #payload_bytes, #to_bytes

Constructor Details

#initialize(src = nil, dst = nil) ⇒ IP

Returns a new instance of IP.



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# File 'lib/mu/pcap/ip.rb', line 21

def initialize src=nil, dst=nil
    super()
    @src = src
    @dst = dst
end

Instance Attribute Details

#dst ⇒ Object

Returns the value of attribute dst.



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# File 'lib/mu/pcap/ip.rb', line 19

def dst
  @dst
end

#src ⇒ Object

Returns the value of attribute src.



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# File 'lib/mu/pcap/ip.rb', line 19

def src
  @src
end

Class Method Details

.checksum(bytes) ⇒ Object 



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# File 'lib/mu/pcap/ip.rb', line 49

def self.checksum bytes
    if bytes.size & 1 == 1
        bytes = bytes + "\0"
    end 
    sum = 0
    bytes.unpack("n*").each {|n| sum += n }
    sum = (sum & 0xffff) + (sum >> 16 & 0xffff)
    ~sum & 0xffff
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/mu/pcap/ip.rb', line 43

def == other
    return super &&
        self.src    == other.src &&
        self.dst    == other.dst
end

#proto ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/mu/pcap/ip.rb', line 35

def proto
    raise NotImplementedError
end

#pseudo_header(payload_length) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/mu/pcap/ip.rb', line 39

def pseudo_header payload_length
    raise NotImplementedError
end

#v4? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mu/pcap/ip.rb', line 27

def v4?
    return false
end

#v6? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mu/pcap/ip.rb', line 31

def v6?
    return false
end