Freifunk-Leipzig
/
gluon-firmware
Archived
13
0
Fork 1
Code Issues Pull Requests Projects Releases Wiki Activity

gluon-mesh-batman-adv-core: Only announce valid IPv6 addresses 

The nodeinfo/network/addresses announcement included deprecated and
tentative addresses, which it clearly shouldn't as the host doesn't want
to be contacted on those addresses. They are now filtered out.
This commit is contained in:
Jan-Philipp Litza 2015-08-03 23:20:43 +02:00
parent bf2f4880fa
commit 4e5b3354d2
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
package/gluon-mesh-batman-adv-core/files/lib/gluon/announce/nodeinfo.d/network/addresses
View File

@ -1,10 +1,13 @@
local ip = require 'luci.ip'
local bit = require 'nixio'.bit
local addresses = {}
for line in io.lines('/proc/net/if_inet6') do
local matches = { line:match('^' .. string.rep('(%x%x%x%x)', 8) .. string.rep(' %x%x', 4) .. '%s+([^%s]+)$') }
if matches[9] == 'br-client' then
local matches = { line:match('^' .. string.rep('(%x%x%x%x)', 8) .. string.rep(' %x%x', 3) .. ' (%x%x)%s+([^%s]+)$') }
-- exclude wrong interfaces and deprecated as well as tentative addresses
-- (see /include/uapi/linux/if_addr.h in linux source for flags)
if matches[10] == 'br-client' and bit.band(tonumber(matches[9], 16), 0x60) == 0 then
table.insert(addresses, ip.IPv6(string.format('%s:%s:%s:%s:%s:%s:%s:%s', unpack(matches))):string():lower())
end
end