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-rw-r--r--util/ip.lua25
1 files changed, 24 insertions, 1 deletions
diff --git a/util/ip.lua b/util/ip.lua
index de287b16..6ebc023b 100644
--- a/util/ip.lua
+++ b/util/ip.lua
@@ -12,7 +12,15 @@ local ip_mt = { __index = function (ip, key) return (ip_methods[key])(ip); end,
local hex2bits = { ["0"] = "0000", ["1"] = "0001", ["2"] = "0010", ["3"] = "0011", ["4"] = "0100", ["5"] = "0101", ["6"] = "0110", ["7"] = "0111", ["8"] = "1000", ["9"] = "1001", ["A"] = "1010", ["B"] = "1011", ["C"] = "1100", ["D"] = "1101", ["E"] = "1110", ["F"] = "1111" };
local function new_ip(ipStr, proto)
- if proto ~= "IPv4" and proto ~= "IPv6" then
+ if not proto then
+ local sep = ipStr:match("^%x+(.)");
+ if sep == ":" then proto = "IPv6"
+ elseif sep == "." then proto = "IPv4"
+ end
+ if not proto then
+ return nil, "invalid address";
+ end
+ elseif proto ~= "IPv4" and proto ~= "IPv6" then
return nil, "invalid protocol";
end
@@ -185,5 +193,20 @@ function ip_methods:scope()
return value;
end
+function ip_methods:private()
+ local private = self.scope ~= 0xE;
+ if not private and self.proto == "IPv4" then
+ local ip = self.addr;
+ local fields = {};
+ ip:gsub("([^.]*).?", function (c) fields[#fields + 1] = tonumber(c) end);
+ if fields[1] == 127 or fields[1] == 10 or (fields[1] == 192 and fields[2] == 168)
+ or (fields[1] == 172 and (fields[2] >= 16 or fields[2] <= 32)) then
+ private = true;
+ end
+ end
+ self.private = private;
+ return private;
+end
+
return {new_ip = new_ip,
commonPrefixLength = commonPrefixLength};