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luci-base: sys.lua: fix parsing conntrack entries without timeout

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Flow offloaded conntrack entries carry no timeout value and trip up the
record parsing routine. Adjust the code to properly deal with such entries.

Ref: https://forum.openwrt.org/t/offloading-breaks-connections-list/126423
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2022-04-29 12:16:19 +02:00
parent 180d39dcd2
commit 531c0ecff2
1 changed files with 8 additions and 2 deletions
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10
modules/luci-base/luasrc/sys.lua
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@ -286,8 +286,14 @@ function net.conntrack(callback)
local line, connt = nil, (not callback) and { }
for line in nfct do
local fam, l3, l4, timeout, tuples =
line:match("^(ipv[46]) +(%d+) +%S+ +(%d+) +(%d+) +(.+)$")
local fam, l3, l4, rest =
line:match("^(ipv[46]) +(%d+) +%S+ +(%d+) +(.+)$")
local timeout, tuples = rest:match("^(%d+) +(.+)$")
if not tuples then
tuples = rest
end
if fam and l3 and l4 and timeout and not tuples:match("^TIME_WAIT ") then
l4 = nixio.getprotobynumber(l4)