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

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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
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7
package/gluon-mesh-batman-adv-core/files/lib/gluon/announce/nodeinfo.d/network/addresses
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@ -1,10 +1,13 @@
local ip = require 'luci.ip' local ip = require 'luci.ip'
local bit = require 'nixio'.bit
local addresses = {} local addresses = {}
for line in io.lines('/proc/net/if_inet6') do 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]+)$') } local matches = { line:match('^' .. string.rep('(%x%x%x%x)', 8) .. string.rep(' %x%x', 3) .. ' (%x%x)%s+([^%s]+)$') }
if matches[9] == 'br-client' then -- 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()) table.insert(addresses, ip.IPv6(string.format('%s:%s:%s:%s:%s:%s:%s:%s', unpack(matches))):string():lower())
end end
end end