41 lines
1.4 KiB
Lua
Executable file
41 lines
1.4 KiB
Lua
Executable file
#!/usr/bin/lua
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local STRICT = true -- Only delete metric 0 routes
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local PINGCMD = "ping -q -I%s -c3 -w3 '%s' >/dev/null 2>&1"
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local PINGTRG = {"google.de", "www.de.debian.org", "eu.kernel.org", "freifunk.net"}
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local ROUTECMD = "route del default gw '%s' >/dev/null 2>&1"
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local THRESHOLD = 3 -- Maximum number of failed tests before dropping the route
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local sys = require "luci.sys"
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local uci = require "luci.model.uci".cursor_state()
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local ucisec = "ff_olsr_test_gw"
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local section = nil
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uci:foreach("olsrd", "LoadPlugin", function(s)
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if s.library == "olsrd_dyn_gw_plain.so.0.4" and s.ignore ~= "1" then
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section = s[".name"]
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end
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end)
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local droute = sys.net.defaultroute()
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if section and droute then -- dyn_gw is enabled and we have a defaultroute, test it
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local state = false
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for _, host in ipairs(PINGTRG) do
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state = state or (sys.call(PINGCMD % {droute.device, host}) == 0)
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end
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if not state and (not STRICT or tonumber(droute.metric) == 0) then
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local count = tonumber(uci:get("olsrd", ucisec, "noinet_count"))
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if not THRESHOLD or (count and count >= THRESHOLD) then
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sys.call(ROUTECMD % droute.gateway:string())
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else
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if not count then
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uci:set("olsrd", ucisec, "state")
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end
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uci:set("olsrd", ucisec, "noinet_count", (count or 0) + 1)
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uci:save("olsrd")
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end
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else
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uci:revert("olsrd", ucisec)
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end
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end
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