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Update iputils.lua #23

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Update iputils.lua #23

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15 changes: 15 additions & 0 deletions lib/resty/iputils.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -137,6 +137,21 @@ end


local function parse_cidr(cidr)
local s, e = string.find(cidr, '-', 0, true)
if s ~= nil then
local sIP = string.sub(cidr, 0, s - 1)
local eIP = string.sub(cidr, e + 1, string.len(cidr))
local lower, _ = ip2bin(sIP) -- Convert IP to binary
if not lower then
return nil, nil
end
local upper, _ = ip2bin(eIP) -- Convert IP to binary
if not upper then
return nil, nil
end
return unsign(lower), unsign(upper)
end

local mask_split = split_cidr(cidr, '/')
local net = mask_split[1]
local mask = mask_split[2] or "32"
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