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|
#!/bin/sh
set -eu
# check if any interface is plugged in and configured
# then do a ping test to see if we have connectivity
include_ping_test=1
ping_test_host=gentoo.org
infinite=false
timeout=10
get_interfaces()
{
local ifname iftype
for ifname in /sys/class/net/*; do
[ -h "${ifname}" ] || continue
read iftype < ${ifname}/type
[ "${iftype}" = "1" ] && printf "%s " ${ifname##*/}
done
return 0
}
check_interfaces()
{
local ifcount=0
local carriers=0 # plugged in
local configured=0
for dev in $(get_interfaces); do
: $((ifcount += 1))
read carrier < /sys/class/net/$dev/carrier 2>/dev/null || carrier=""
[ "${carrier}" = 1 ] && : $((carriers += 1))
read operstate < /sys/class/net/$dev/operstate 2>/dev/null || operstate=""
[ "${operstate}" = up ] && : $((configured += 1))
done
#[ $configured -eq $ifcount ] && [ $carriers -ge 1 ] && return 0
[ $configured -ge 1 ] && [ $carriers -ge 1 ] && return 0
return 1
}
check_online()
{
local timeout=${timeout:-120}
while $infinite || [ $timeout -gt 0 ] ; do
check_interfaces && break
sleep 1
: $((timeout -= 1))
done
#echo 'plugged in'
if [ "${include_ping_test}" = 1 ] && [ -n "${ping_test_host}" ]; then
local timeout=${timeout:-120}
while $infinite || [ $timeout -gt 0 ] ; do
ping -c 1 $ping_test_host >/dev/null 2>&1
[ $? -eq 0 ] && break
sleep 1
: $((timeout -= 1))
done
fi
#echo 'connected'
}
check_online
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