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Add IPv6 support for bit2netmask

This commit is contained in:
James Lee 2012-03-16 01:43:05 -06:00
parent a3db547c76
commit 916f23fe4e
1 changed files with 8 additions and 3 deletions
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11
lib/rex/socket.rb
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@ -494,10 +494,15 @@ module Socket
#
# Converts a bitmask (28) into a netmask (255.255.255.240)
# TODO: IPv6 (use is ambiguous right now)
#
def self.bit2netmask(bitmask)
[ (~((2 ** (32 - bitmask)) - 1)) & 0xffffffff ].pack('N').unpack('CCCC').join('.')
def self.bit2netmask(bitmask, ipv6=false)
if bitmask > 32 or ipv6
i = ((~((2 ** (128 - bitmask)) - 1)) & (2**128-1))
n = Rex::Socket.addr_iton(i, true)
return Rex::Socket.addr_ntoa(n)
else
[ (~((2 ** (32 - bitmask)) - 1)) & 0xffffffff ].pack('N').unpack('CCCC').join('.')
end
end