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Hierarchical arrangement of IPv6 files on the filesystem

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Implements #1376
This commit is contained in:
Simone Mainardi 2017-08-05 18:58:19 +02:00
parent 218933ad2a
commit 6fda7143d2
1 changed files with 44 additions and 2 deletions
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46
scripts/lua/modules/lua_utils.lua
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@ -2003,11 +2003,53 @@ function getRedisPrefix(str)
end
end
function getPathFromIPv6(addr)
local ipv6 = {"0000", "0000", "0000", "0000",
"0000", "0000", "0000", "0000"}
local ip, subnet = (addr or ''):match("([^/]+)/?(%d*)")
if ip == nil then ip = '' end
if subnet == nil then subnet = '' end
local prefix = ip or ''
local suffix = ''
if ip:find("::") then
local s = ip:gsub("::","x")
local t = s:split("x")
prefix, suffix = t[1] or '', t[2] or ''
end
for i, p in ipairs(prefix:split(":") or {prefix}) do
ipv6[i] = string.format('%.4x', tonumber(p, 16) or 0)
end
local i = 1
for _, p in pairsByKeys(suffix:split(":") or {suffix}, rev) do
ipv6[8 - i + 1] = string.format('%.4x', tonumber(p, 16) or 0)
i = i + 1
end
local most_significant = {ipv6[1], ipv6[2], ipv6[3], ipv6[4]}
local interface_identifier = {ipv6[5], ipv6[6], ipv6[7], ipv6[8]}
-- most significant part of the address goes in a hierarchical structure
local res = table.concat(most_significant, "/")
-- the interface identifies goes as-is because it is non structured
res = fixPath(res.."/"..table.concat(interface_identifier, "_"))
if not isEmptyString(subnet) then
res = fixPath(res.."/"..subnet)
end
return res
end
function getPathFromKey(key)
if key == nil then key = "" end
while key:match("::") do
key = key:gsub("::", ":0000:")
if isIPv6(key) then
return getPathFromIPv6(key)
end
key = key:gsub("[%.:]", "/")