74 lines
1.6 KiB
Bash
74 lines
1.6 KiB
Bash
|
#!/bin/bash
|
||
|
|
(
|
||
|
|
|
||
|
|
. /etc/router-checks.conf
|
||
|
|
|
||
|
|
exec >>$LOG_FILE 2>&1
|
||
|
|
date
|
||
|
|
echo "... STARTING"
|
||
|
|
. "$LIB_DIR/pings"
|
||
|
|
|
||
|
|
echo $$ > $PID_FILE
|
||
|
|
stop_file="$PID_FILE.$$"
|
||
|
|
trap "rm -f $stop_file" SIGINT SIGTERM
|
||
|
|
touch $stop_file
|
||
|
|
SLEEP_TIME=60
|
||
|
|
while [ -f "$stop_file" ]; do
|
||
|
|
sleep $SLEEP_TIME
|
||
|
|
SLEEP_TIME=1
|
||
|
|
|
||
|
|
pr_switch=`mktemp`
|
||
|
|
pr_peer=`mktemp`
|
||
|
|
if [ -f "$ACTIVATION_FILE" ]; then
|
||
|
|
|
||
|
|
# When the secondary router is active, disable it if the
|
||
|
|
# internet is not reachable and either the primary router is
|
||
|
|
# up or the switch is down
|
||
|
|
|
||
|
|
pr_internet=`mktemp`
|
||
|
|
wait_pings `try_ping $INTERNET_ADDR $pr_internet` \
|
||
|
|
`try_ping $PRIMARY_ADDR $pr_peer` \
|
||
|
|
`try_ping $SWITCH_ADDR $pr_switch`
|
||
|
|
if [ -f "$pr_internet" ]; then
|
||
|
|
if [ -f "$pr_switch" ] || ! [ -f "$pr_peer" ]; then
|
||
|
|
date
|
||
|
|
echo "de-activating connection"
|
||
|
|
$LIB_DIR/deactivate.sh
|
||
|
|
rm -f "$ACTIVATION_FILE"
|
||
|
|
SLEEP_TIME=10
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
rm -f "$pr_internet"
|
||
|
|
|
||
|
|
else
|
||
|
|
|
||
|
|
# When the secondary router is inactive, enable it if the
|
||
|
|
# switch is up and both the primary router and the main address
|
||
|
|
# are unreachable
|
||
|
|
|
||
|
|
pr_main=`mktemp`
|
||
|
|
wait_pings `try_ping $SWITCH_ADDR $pr_switch` \
|
||
|
|
`try_ping $PRIMARY_ADDR $pr_peer` \
|
||
|
|
`try_ping $MAIN_ADDR $pr_main`
|
||
|
|
if [ -f "$pr_main" ] && [ -f "$pr_peer" ] && ! [ -f "$pr_switch" ]; then
|
||
|
|
date
|
||
|
|
echo "activating connection"
|
||
|
|
$LIB_DIR/activate.sh
|
||
|
|
touch "$ACTIVATION_FILE"
|
||
|
|
SLEEP_TIME=20
|
||
|
|
fi
|
||
|
|
rm -f "$pr_main"
|
||
|
|
|
||
|
|
fi
|
||
|
|
rm -f "$pr_peer" "$pr_switch"
|
||
|
|
done
|
||
|
|
if [ -f "$ACTIVATION_FILE" ]; then
|
||
|
|
$LIB_DIR/deactivate.sh
|
||
|
|
rm -f "$ACTIVATION_FILE"
|
||
|
|
fi
|
||
|
|
date
|
||
|
|
echo "... EXITING"
|
||
|
|
rm "$PID_FILE"
|
||
|
|
|
||
|
|
) &
|