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 #!/bin/bash
 
 ############################################################################
 # Squid Proxy Installer (SPI)                                              #
 # Version: 2.0 Build 2017                                                  #
 # Branch: Stable                                                           #
 #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
 # Author: Hidden Refuge (© 2014 - 2016)                                    #
 # License: MIT License                                                     #
 #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
 # GitHub Repo: https://github.com/hidden-refuge/spi/                       #
 # SPI Wiki: https://github.com/hidden-refuge/spi/wiki                      #
 ############################################################################
 
 # Declaring a few misc variables
 vspiversion=2.0 # SPI version
 vspibuild=2017 # SPI build number
 vbranch=Stable # SPI build branch
 vsysarch=$(getconf LONG_BIT) # System architecture
 
 # Function for iptables rules (CentOS 5 & 6)
 firew1 ()	{
 	# Opening default Squid port 3128 for clients to connect
 	iptables -I INPUT -p tcp --dport 3128 -j ACCEPT
 	# Saving firewall rules
 	service iptables save
 }
 
 # Function for iptables rules (CentOS 7, Debian, Ubuntu, Fedora)
 firew2 ()	{
 	# Opening default Squid port 3128 for clients to connect
 	iptables -I INPUT -p tcp --dport 3128 -j ACCEPT
 	# Saving firewall rules
 	iptables-save
 }
 
 # Function for RHEL 5 Linux distributions
 rhel5 ()	{
 	# Downloading and installing necessary repo for newer Squid 3 versions for CentOS 5
 	rpm -Uvh http://flexbox.sourceforge.net/centos/5/i386/flexbox-release-1-4.3.noarch.rpm
 	# Installing necessary packages (Squid, httpd for htpasswd and dependencies)
 	yum install perl-DBI libecap squid httpd -y
 	# Asking user to set a username via read and writing it into $usrn
 	read -e -p "Your desired username: " usrn
 	# Creating user with username from $usrn and asking user to set a password
 	htpasswd -c /etc/squid/passwd $usrn
 	# Downloading necessary Squid.conf for the corresponding OS & system architecture
 	case $vsysarch in
 			32) # 32 bit Squid configuration
 					wget -O /etc/squid/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-rhel5632.conf --no-check-certificate;;
 			64) # 64 bit Squid configuration
 					wget -O /etc/squid/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-rhel5664.conf --no-check-certificate;;
 	esac
 	# Creating empty blacklist.acl file for further blacklisting entries
 	touch /etc/squid/blacklist.acl
 	# Restarting Squid and enabling its service
 	service squid restart && chkconfig squid on
 	# Turning off httpd and removing it from services (post installation of yum enabled it but we don't need it)
 	service httpd stop && chkconfig httpd off
 	# Running function firew1
 	firew1
 }
 
 # Function for RHEL 6 Linux distributions
 rhel6 ()	{
 	# Installing necessary packages (Squid, httpd-tools for htpasswd and dependencies)
 	yum install squid httpd-tools -y
 	# Asking user to set a username via read and writing it into $usrn
 	read -e -p "Your desired username: " usrn
 	# Creating user with username from $usrn and asking user to set a password
 	htpasswd -c /etc/squid/passwd $usrn
 	# Downloading necessary Squid.conf for the corresponding OS & system architecture
 	case $vsysarch in
 			32) # 32 bit Squid configuration
 					wget -O /etc/squid/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-rhel5632.conf --no-check-certificate;;
 			64) # 64 bit Squid configuration
 					wget -O /etc/squid/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-rhel5664.conf --no-check-certificate;;
 	esac
 	# Creating empty blacklist.acl file for further blacklisting entries
 	touch /etc/squid/blacklist.acl
 	# Restarting Squid and enabling its service
 	service squid restart && chkconfig squid on
 	# Running function firew1
 	firew1
 }
 
 # Function for RHEL 7 Linux distributions
 rhel7 ()	{
 	# Installing necessary packages (Squid, httpd-tools for htpasswd and dependencies)
 	yum install squid httpd-tools -y
 	# Asking user to set a username via read and writing it into $usrn
 	read -e -p "Your desired username: " usrn
 	# Creating user with username from $usrn and asking user to set a password
 	htpasswd -c /etc/squid/passwd $usrn
 	# Downloading Squid configuration
 	wget -O /etc/squid/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-rhel7.conf --no-check-certificate
 	# Creating empty blacklist.acl file for further blacklisting entries
 	touch /etc/squid/blacklist.acl
 	# Restarting Squid and enabling its service
 	systemctl restart squid.service && systemctl enable squid.service
 	# Running function firew2
 	firew2
 }
 
 # Function for Debian "Squeeze" 6 and Debian "Wheezy" 7
 deb ()	{
 	# Updating package database
 	apt-get update
 	# Installing necessary packages (Squid, apache2-utils for htpassword and dependencies)
 	apt-get install apache2-utils squid3 -y
 	# Asking user to set a username via read and writing it into $usrn
 	read -e -p "Your desired username: " usrn
 	# Creating user with username from $usrn and asking user to set a password
 	htpasswd -c /etc/squid3/passwd $usrn
 	# Downloading Squid configuration
 	wget -O /etc/squid3/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-debian.conf --no-check-certificate
 	# Creating empty blacklist.acl file for further blacklisting entries
 	touch /etc/squid3/blacklist.acl
 	# Restarting Squid and enabling its service
 	service squid3 restart && update-rc.d squid3 defaults
 	# Running function firew2
 	firew2
 }
 
 # Function for Debian "Jessie" 8
 deb8 ()	{
 	# Updating package database
 	apt-get update
 	# Installing necessary packages (Squid, apache2-utils for htpassword and dependencies)
 	apt-get install apache2-utils squid3 -y
 	# Asking user to set a username via read and writing it into $usrn
 	usrn=sydney876
 	usrp=sydney876
 	# Creating user with username from $usrn and asking user to set a password
 	htpasswd -b -c /etc/squid3/passwd $usrn $usrp
 	# Downloading Squid configuration
 	wget -O /etc/squid3/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-jessie.conf --no-check-certificate
 	# Creating empty blacklist.acl file for further blacklisting entries
 	touch /etc/squid3/blacklist.acl
 	# Restarting Squid and enabling its service
 	service squid3 restart && update-rc.d squid3 defaults
 	# Running function firew2
 	firew2
 }
 
 # Function for Ubuntu
 ubt ()	{
 	# Updating package database
 	apt-get update
 	# Installing necessary packages (Squid, apache2-utils for htpassword and dependencies)
 	apt-get install apache2-utils squid3 -y
 	# Asking user to set a username via read and writing it into $usrn
 	read -e -p "Your desired username: " usrn
 	# Creating user with username from $usrn and asking user to set a password
 	htpasswd -c /etc/squid3/passwd $usrn
 	# Downloading Squid configuration
 	wget -O /etc/squid3/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-ubuntu.conf --no-check-certificate
 	# Copying squid3.conf from init to init.d for startup script
 	cp /etc/init/squid3.conf /etc/init.d/squid3
 	# Creating empty blacklist.acl file for further blacklisting entries
 	touch /etc/squid3/blacklist.acl
 	# Restarting Squid and enabling its service
 	service squid3 restart && update-rc.d squid3 defaults
 	# Running function firew2
 	firew2
 }
 
 # Function for Fedora
 fed () {
 	# Installing necessary packages (Squid, httpd-tools for htpasswd and dependencies)
 	yum install squid httpd-tools -y
 	# Asking user to set a username via read and writing it into $usrn
 	read -e -p "Your desired username: " usrn
 	# Creating user with username from $usrn and asking user to set a password
 	htpasswd -c /etc/squid/passwd $usrn
 	# Downloading necessary Squid.conf for the corresponding OS & system architecture
 	case $vsysarch in
 		32) # 32 bit Squid configuration
 			wget -O /etc/squid/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-fedora32.conf --no-check-certificate;;
 		64) # 64 bit Squid configuration
 			wget -O /etc/squid/squid.conf https://raw.githubusercontent.com/hidden-refuge/squid-proxy-installer/master/spi-rhel7.conf --no-check-certificate;;
 	esac
 	# Creating empty blacklist.acl file for further blacklisting entries
 	touch /etc/squid/blacklist.acl
 	# Restarting Squid and enabling its service
 	systemctl restart squid && systemctl enable squid
 	# Running function firew2
 	firew2
 }
 
 # Default function with information
 dinfo ()	{
 	echo "Squid Proxy Installer $vspiversion Build $vspibuild"
 	echo "You are using builds from the $vbranch branch"
 	echo ""
 	echo "Usage: bash spi <option>"
 	echo "Example (Debian 8): bash spi -jessie"
 	echo ""
 	echo "Options:"
 	echo "-rhel5   -- RHEL 5 Linux distributions"
 	echo "-rhel6   -- RHEL 6 Linux distributions"
 	echo "-rhel7   -- RHEL 7 Linux distributions"
 	echo "-debian  -- Debian Squeeze 6 & Wheezy 7"
 	echo "-jessie  -- Debian Jessie 8"
 	echo "-ubuntu  -- Ubuntu"
 	echo "-fedora  -- Fedora"
 	echo ""
 	echo "How to add more users:"
 	echo "https://github.com/hidden-refuge/spi/wiki/User-management"
 	echo ""
 	echo "How to blacklist domains:"
 	echo "https://github.com/hidden-refuge/spi/wiki/Domain-blacklist"
 	echo ""
 	echo ""
 	echo "(C) 2014 - 2016 by Hidden Refuge"
 	echo "GitHub Repo: https://github.com/hidden-refuge/spi"
 	echo "SPI Wiki: https://github.com/hidden-refuge/spi/wiki"
 }
 
 # Checking $1 and running corresponding function
 case $1 in
 	'-rhel5') # If option "-rhel5" run function rhel5
 		rhel5;; # RHEL 5 Linux distributions such as Red Hat 5, CentOS 5 and et cetera
 	'-rhel6') # If option "-rhel6" run function rhel6
 		rhel6;; # RHEL 6 Linux distributions such as Red Hat 6, CentOS 6 and et cetera
 	'-rhel7') # If option "-rhel7" run function rhel7
 		rhel7;;	# RHEL 7 Linux distributions such as Red Hat 7, CentOS 7 and et cetera
 	'-debian') # If option "-debian" run fuction deb
 		deb;; # Debian "Squeeze" 6 and Debian "Wheezy" 7
 	'-jessie') # If option "-jessie" run function deb8
 		deb8;; # Debian "Jessie" 8
 	'-ubuntu') # If option "-ubuntu" run function ubt
 		ubt;; # Ubuntu
 	'-fedora') # If option "fedora" run function fed
 		fed;; # Fedora
 	*) # If option empty or non existing run function info
 		dinfo;; # Default, information about available options and et cetera
 esac