gluon/package/gluon-mesh-vpn-tunneldigger/files/usr/bin/tunneldigger-watchdog
Matthias P. Walther 8e176354f8
gluon-mesh-vpn-tunneldigger add watchdog script
The logic is based on the previously used shell script implementation.

Co-Authored-By: Robin Weiligmann <admin@robwei.me>
2019-06-16 20:56:35 +02:00

47 lines
1.1 KiB
Lua
Executable File

#!/usr/bin/lua
local uci = require('simple-uci').cursor()
function restart_tunneldigger()
os.execute('logger -t tunneldigger-watchdog "Restarting Tunneldigger."')
os.execute('/etc/init.d/tunneldigger restart')
end
function read_pid_file()
local pid_file = io.open('/var/run/tunneldigger.mesh-vpn.pid', 'r')
if not pid_file then
return nil
end
local pid = pid_file:read('*l')
pid_file:close()
return pid
end
function has_mesh_vpn_neighbours()
local handle = io.popen('batctl o', 'r')
if not handle then
return false
end
for line in handle:lines() do
if line:find('mesh%-vpn') then
handle:close()
return true
end
end
handle:close()
return false
end
if uci:get_bool('tunneldigger', 'mesh_vpn', 'enabled') then
if io.popen('pgrep tunneldigger'):read('*l') ~= read_pid_file() then
os.execute('logger -t tunneldigger-watchdog "Process-Pid does not match with pid-File."')
restart_tunneldigger()
return
end
if not has_mesh_vpn_neighbours() then
os.execute('logger -t tunneldigger-watchdog "No vpn-mesh neighbours found."')
restart_tunneldigger()
return
end
end