merlin-ovpn-server-restart.sh

#!/bin/sh
#DEBUG= # uncomment/comment to enable/disable debug mode

#          name: merlin-ovpn-server-restart.sh
#       version: 1.1.0, 05-aug-2022, by eibgrad
#       purpose: restart openvpn server(s) on bootup
#       type(s): services-start
#          href: https://tinyurl.com/4bnrte9c
#  installation:
#    1. enable jffs custom scripts and configs (administration->system)
#    2. ssh to router and copy/paste the following command:
#         curl -kLs bit.ly/merlin-installer|tr -d '\r'|sh -s MkKb9tia
#    3. reboot

SCRIPTS_DIR='/jffs/scripts'
SCRIPT1="$SCRIPTS_DIR/merlin-ovpn-server-restart.sh"
SCRIPT2="$SCRIPTS_DIR/services-start"

mkdir -p $SCRIPTS_DIR

# --------------------- begin merlin-ovpn-server-restart --------------------- #
cat << 'EOF' > $SCRIPT1
#!/bin/sh
#set -x # comment/uncomment to disable/enable debug mode
{
if [ ! "$1" ]; then
    # only autostart enabled openvpn servers need to be considered
    for i in $(nvram get vpn_serverx_start | tr ',' ' '); do
        nohup $0 $i &>/dev/null &
    done
else
    # wait for successful openvpn server startup
    until pidof vpnserver${1} &>/dev/null && \
            [ "$(nvram get vpn_server${1}_state)" == '2' ]
        do sleep 10; done; sleep 10

    # restart the openvpn server
    service restart_vpnserver${1} >/dev/null
    echo "openvpn server #$1 restarted @ $(date)"
fi

exit 0
} 2>&1 | logger -t $(basename $0 .sh)[$$]
EOF
[ ${DEBUG+x} ] && sed -ri '2 s/^#(set -x)/\1/' $SCRIPT1
chmod +x $SCRIPT1
echo "installed: $SCRIPT1"
# ---------------------- end merlin-ovpn-server-restart ---------------------- #

# --------------------------- begin services-start --------------------------- #
create_script() {
cat << 'EOF' > $SCRIPT2
#!/bin/sh
#set -x # comment/uncomment to disable/enable debug mode
{
$SCRIPT1
} 2>&1 | logger -t $(basename $0)[$$]
EOF
[ ${DEBUG+x} ] && sed -ri '2 s/^#(set -x)/\1/' $SCRIPT2
sed "s:\$SCRIPT1:$SCRIPT1:g" -i $SCRIPT2
chmod +x $SCRIPT2
}

if [ -f $SCRIPT2 ]; then
    echo "error: $SCRIPT2 already exists; requires manual installation"
else
    create_script
    echo "installed: $SCRIPT2"
fi
# ---------------------------- end services-start ---------------------------- #