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OpenWrtScripts

General Scripts I use in OpenWRT broken into 3 groups

alt tag

1. Push

This is a simple script, which currently supports sending messages to the following services:

  • PushBullet
  • Cisco Spark

Install

opkg update
opkg install curl ca-certificates
wget -O /etc/config/push http://rawgit.com/fbradyirl/OpenWrtScripts/master/push/push.conf
wget -O /usr/bin/push.sh http://rawgit.com/fbradyirl/OpenWrtScripts/master/push/push.sh
chmod +x /usr/bin/push.sh

Usage

Now, just fill in required fields in /etc/config/push and test by running the command

# First param is the subject, second is the message.
push.sh "Hello" "This is my message"

2. OpenVPN status watcher

This will keep an eye on OpenVPN status files for any changes. If any change is detected (e.g. a new connection), it will parse the IPs of all connections, and figure out which country the IP comes from, and notify push.sh services.

Install

opkg update
opkg install ca-certificates

wget -O /usr/bin/status_watcher.sh http://rawgit.com/fbradyirl/OpenWrtScripts/master/openvpn-watcher/status_watcher.sh
wget -O /usr/bin/openvpn-status.sh http://rawgit.com/fbradyirl/OpenWrtScripts/master/openvpn-watcher/openvpn-status.sh

chmod +x /usr/bin/status_watcher.sh
chmod +x /usr/bin/openvpn-status.sh

# Add to the top of startup script
sed -i '1istatus_watcher.sh &' /etc/rc.local

Usage

You will need to ensure your OpenVPN server is set to log to a status file. E.g. in /etc/config/openvpn ensure that you have an 'option status' line for each VPN instance:

config openvpn 'TCPVPNserver'
    ...
    option status '/tmp/openvpn-status-tcp.log'

config openvpn 'UDPVPNserver'
    ...
    option status '/tmp/openvpn-status-udp.log'

Then, you will need to add the names of each server to the top of /usr/bin/openvpn-status.sh

# Fill the following in to match the names in your OpenVPN config
STATUS_TCP="$(uci get openvpn.TCPVPNserver.status)"
STATUS_UDP="$(uci get openvpn.UDPVPNserver.status)"

Now, reboot your router and the status_watcher.sh will check for changes every minute and notify you when changes are seen.

3. SMS Forwarder

If you happen to use OpenWRT with a 3G/4G dongle, and use the ROOter addons from http://ofmodemsandmen.com , I wrote a simple script to forward any incoming SMS texts to the sim card to the push services.

Install

opkg update
opkg install ca-certificates

wget -O /usr/lib/sms/forwardsms.sh http://rawgit.com/fbradyirl/OpenWrtScripts/master/sms/forwardsms.sh
chmod +x /usr/lib/sms/forwardsms.sh

To add a hook into incoming message event, you must do the following:

# Now, as of ROOter GoldenOrb release (1/Apr/2016)
# you must insert the following lines between
# "uci commit modem" and "fi" of the loop
# in file /usr/lib/sms/processsms

if [ -e /usr/lib/sms/forwardsms.sh ]; then
    sh /usr/lib/sms/forwardsms.sh $CURRMODEM
fi

Usage

As long as you have Push configured (step 1), you will get notified of new SMS and their content as they arrive!