46 lines
1.0 KiB
Ruby
46 lines
1.0 KiB
Ruby
# -*- coding: binary -*-
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##
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#
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# NAT-PMP protocol support
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#
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# by Jon Hart <jhart@spoofed.org>
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#
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##
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module Rex
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module Proto
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module NATPMP
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# Return a NAT-PMP request to get the external address.
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def self.external_address_request
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[ 0, 0 ].pack('nn')
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end
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# Parse a NAT-PMP external address response +resp+.
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# Returns the decoded parts of the response as an array.
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def self.parse_external_address_response(resp)
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(ver, op, result, epoch, addr) = resp.unpack("CCSLN")
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[ ver, op, result, epoch, Rex::Socket::addr_itoa(addr) ]
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end
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# Return a NAT-PMP request to map remote port +rport+/+protocol+ to local port +lport+ for +lifetime+ ms
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def self.map_port_request(lport, rport, protocol, lifetime)
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[ Rex::Proto::NATPMP::Version, # version
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protocol, # opcode, which is now the protocol we are asking to forward
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0, # reserved
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lport,
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rport,
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lifetime
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].pack("ccnnnN")
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end
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# Parse a NAT-PMP mapping response +resp+.
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# Returns the decoded parts as an array.
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def self.parse_map_port_response(resp)
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resp.unpack("CCSLnnN")
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end
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end
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end
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end
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