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gluon-core, gluon-mesh-babel: move lua functions that generate ll-addresses from a mac into gluon-core

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This commit is contained in:
Christof Schulze 2018-10-03 18:33:00 +02:00
parent c23e6e4b53
commit 171c293ebe
2 changed files with 98 additions and 93 deletions
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96
package/gluon-core/luasrc/usr/lib/lua/gluon/iputil.lua Normal file
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@ -0,0 +1,96 @@
local bit = require 'bit'
local string = string
local tonumber = tonumber
local table = table
module 'gluon.iputil'
function IPv6(address)
--[[
(c) 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
(c) 2008 Steven Barth <steven@midlink.org>
Licensed under the Apache License, Version 2.0 (the "License").
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
]]--
local data = {}
local borderl = address:sub(1, 1) == ":" and 2 or 1
local borderh, zeroh, chunk, block
if #address > 45 then return nil end
repeat
borderh = address:find(":", borderl, true)
if not borderh then break end
block = tonumber(address:sub(borderl, borderh - 1), 16)
if block and block <= 0xFFFF then
data[#data+1] = block
else
if zeroh or borderh - borderl > 1 then return nil end
zeroh = #data + 1
end
borderl = borderh + 1
until #data == 7
chunk = address:sub(borderl)
if #chunk > 0 and #chunk <= 4 then
block = tonumber(chunk, 16)
if not block or block > 0xFFFF then return nil end
data[#data+1] = block
elseif #chunk > 4 then
if #data == 7 or #chunk > 15 then return nil end
borderl = 1
for i=1, 4 do
borderh = chunk:find(".", borderl, true)
if not borderh and i < 4 then return nil end
borderh = borderh and borderh - 1
block = tonumber(chunk:sub(borderl, borderh))
if not block or block > 255 then return nil end
if i == 1 or i == 3 then
data[#data+1] = block * 256
else
data[#data] = data[#data] + block
end
borderl = borderh and borderh + 2
end
end
if zeroh then
if #data == 8 then return nil end
while #data < 8 do
table.insert(data, zeroh, 0)
end
end
if #data == 8 then
return data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8]
end
end
function mac_to_ip(prefix, mac)
local m1, m2, m3, m6, m7, m8 = string.match(mac, '(%x%x):(%x%x):(%x%x):(%x%x):(%x%x):(%x%x)')
local m4 = 0xff
local m5 = 0xfe
m1 = bit.bxor(tonumber(m1, 16), 0x02)
local h1 = 0x100 * m1 + tonumber(m2, 16)
local h2 = 0x100 * tonumber(m3, 16) + m4
local h3 = 0x100 * m5 + tonumber(m6, 16)
local h4 = 0x100 * tonumber(m7, 16) + tonumber(m8, 16)
local prefix, plen = string.match(prefix, '(.*)/(%d+)')
plen = tonumber(plen, 10)
local p1, p2, p3, p4, p5, p6, p7, p8 = IPv6(prefix)
return string.format("%x:%x:%x:%x:%x:%x:%x:%x/%d", p1, p2, p3, p4, h1, h2, h3, h4, 128)
end

95
package/gluon-mesh-babel/luasrc/lib/gluon/upgrade/300-gluon-mesh-babel-ip6
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@ -1,102 +1,11 @@
#!/usr/bin/lua #!/usr/bin/lua
local bit = require 'bit'
local sysconfig = require 'gluon.sysconfig' local sysconfig = require 'gluon.sysconfig'
local uci = require('simple-uci').cursor() local uci = require('simple-uci').cursor()
local site = require 'gluon.site' local site = require 'gluon.site'
local iputil = require 'gluon.iputil'
local ip = iputil.mac_to_ip(site.node_prefix6(), sysconfig.primary_mac)
function IPv6(address)
--[[
(c) 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
(c) 2008 Steven Barth <steven@midlink.org>
Licensed under the Apache License, Version 2.0 (the "License").
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
]]--
local data = {}
local borderl = address:sub(1, 1) == ":" and 2 or 1
local borderh, zeroh, chunk, block
if #address > 45 then return nil end
repeat
borderh = address:find(":", borderl, true)
if not borderh then break end
block = tonumber(address:sub(borderl, borderh - 1), 16)
if block and block <= 0xFFFF then
data[#data+1] = block
else
if zeroh or borderh - borderl > 1 then return nil end
zeroh = #data + 1
end
borderl = borderh + 1
until #data == 7
chunk = address:sub(borderl)
if #chunk > 0 and #chunk <= 4 then
block = tonumber(chunk, 16)
if not block or block > 0xFFFF then return nil end
data[#data+1] = block
elseif #chunk > 4 then
if #data == 7 or #chunk > 15 then return nil end
borderl = 1
for i=1, 4 do
borderh = chunk:find(".", borderl, true)
if not borderh and i < 4 then return nil end
borderh = borderh and borderh - 1
block = tonumber(chunk:sub(borderl, borderh))
if not block or block > 255 then return nil end
if i == 1 or i == 3 then
data[#data+1] = block * 256
else
data[#data] = data[#data] + block
end
borderl = borderh and borderh + 2
end
end
if zeroh then
if #data == 8 then return nil end
while #data < 8 do
table.insert(data, zeroh, 0)
end
end
if #data == 8 then
return data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8]
end
end
function mac_to_ip(prefix, mac)
local m1, m2, m3, m6, m7, m8 = string.match(mac, '(%x%x):(%x%x):(%x%x):(%x%x):(%x%x):(%x%x)')
local m4 = 0xff
local m5 = 0xfe
m1 = bit.bxor(tonumber(m1, 16), 0x02)
local h1 = 0x100 * m1 + tonumber(m2, 16)
local h2 = 0x100 * tonumber(m3, 16) + m4
local h3 = 0x100 * m5 + tonumber(m6, 16)
local h4 = 0x100 * tonumber(m7, 16) + tonumber(m8, 16)
local prefix, plen = string.match(prefix, '(.*)/(%d+)')
plen = tonumber(plen, 10)
local p1, p2, p3, p4, p5, p6, p7, p8 = IPv6(prefix)
return string.format("%x:%x:%x:%x:%x:%x:%x:%x/%d", p1, p2, p3, p4, h1, h2, h3, h4, 128)
end
local ip = mac_to_ip(site.node_prefix6(), sysconfig.primary_mac)
uci:set('network', 'loopback', 'ip6addr', ip) uci:set('network', 'loopback', 'ip6addr', ip)
uci:save('network') uci:save('network')