#!/bin/bash

# This script downloads the current version of Samba available on the www.samba.org website and compiles/installs it.
# It is only intended to be used as an update script, not as an installation script for a new isntall.  Run this
# script and your system will email you when the install is complete.  If you originally compiled Sambe with any
# special options, be sure to edit the "./configure" command below to add the necessary options.

# Instructions:

# Replace <from_address> and <to_address> with sender and recipient emails below (without the brackets).

# Prerequisites:

# This script requires the mailx package in order to send notification emails.

# NOTE: This script is only for Samba installations compiled from source.  If you installed Samba via your package
# manager, DO NOT use this script.  This script was developed on a CentOS 7 64-bit system.  It may require
# modification to work on other Linux distributions or architectures.

# If you are using Samba as an Active Directory Domain Controller, ONLY USE THIS SCRIPT ON THE DOMAIN CONTROLLER
# THAT DOES NOT HOLD ANY FSMO ROLES.  Future enhancements to this script will include FSMO role checking and
# automated role transfer.

cd /tmp
wget https://www.samba.org
sambadlpath=`grep gzipped "index.html" | awk -F\" '{print $(NF-1)}'`
rm -f index.html
wget https://www.samba.org$sambadlpath
tar xzf samba*
cd samba*
./configure
make
systemctl stop samba
make install
systemctl start samba
sambastatus=`systemctl status samba | grep Active | awk '{print $3;}'`
if [[ "$sambastatus" == *"running"* ]]
then echo "Samba `/usr/local/samba/bin/smbclient -V` successfully installed.  Current status: $sambastatus." | mail -r dc1@preissner.us -s "Samba update complete" mike@preissner.us
fi