My NoIP2 init script and user setup

I recently had to setup a NoIP2 client on a system for which no package exists.  As it's a Debian based distro, I felt pretty safe using the instructions for Ubuntu 12.04 LTS.(about part way down the page).  In short, it's a locally compiled process.  This is great for getting a running client, but the scripts I could find for automatically starting the client at reboot weren't quite what I thought acceptable.  When I tried to finish the setup with update-rc, there were errors about missing lsb tags and the client was running under an id with more privileges than it should ever have.

I created a user named noip, limited its access to the two files necessary to run and then wrote a lsb compliant init script and installed it.


Download complete script from here.


#!/bin/bash # # Copyright (C) <2014> <john W. Gill> # # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER # DEALINGS IN THE SOFTWARE. # commandname=noip2 initscriptlocation=/etc/init.d/$commandname commandlocation=/usr/local/bin/$commandname commanduser=noip # add a user for this process useradd $commanduser echo '#!/bin/sh ### BEGIN INIT INFO # Provides: no-ip2 # Required-Start: $all # Required-Stop: # Should-Start: # Should-Stop: # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: no-ip2 rcscript ### END INIT INFO name=noip2 user=noip command=/usr/local/bin/$name config=/usr/local/etc/no-ip2.conf start() { pid=` ps axo pid,command | grep $command | grep -v grep | cut -d " " -f2 ` if [ -z "$pid" ]; then echo "Starting $name." chown $user $command chmod 711 $command chown $user $config chmod 111 $command $command -c $config echo else echo "$name already running." fi } stop() { pid=` ps axo pid,command | grep $command | grep -v grep | cut -d " " -f2 ` if [ -n "$pid" ]; then echo "Stopping $name." $command -K $pid else echo "$name was not running." fi } status() { pid=` ps axo pid,command | grep $command | grep -v grep | cut -d " " -f2 ` if [ -n "$pid" ]; then echo "$name running." else echo "$name stopped." fi } case "$1" in start) start && status ;; stop) stop && status ;; restart|reload|try-restart|force-reload) stop && status && start && status ;; status) status ;; *) echo $"$name Control script. Usage: $0 {start|stop|restart|reload}" exit 1 esac exit 0 ' > $initscriptlocation chmod 711 $initscriptlocation update-rc.d $commandname defaults