init.sh

#!/bin/bash
#author: junglert
#co-author: amueller
#mail:
#date: 18.12.2020
#license: GPL-3.0
#summary: These scripts installes required packages and moves files where they belong

# Output Configuration
TextColorRed='\033[0;31m'
TextColorOrange='\033[1;31m'
TextColorYellow='\033[1;33m'
TextColorGreen='\033[0;32m'
TextColorNone='\033[0m'
# These should be unchanged
distribution=$(grep ID_LIKE= /etc/os-release | cut -d'=' -f2 | head -1 | sed 's/"//g')
pkg_required="apache2 apache2-mod_php7"
ip=$(ip -o route get 0.0.0.1 | cut -d' ' -f7)
name_site="index.php"
shc_version="3.2.1"
# variables
path_folder_shc="$HOME/.shc"
path_file_index="/srv/www/htdocs"
path_file_conf="/etc/apache2/httpd.conf"
active_scripts="storage_used storage_total temperature mem_used mem_total ip hostname os kernel_version uptime cpu arch"

#functions
splitter(){
	echo "-------------------------------------------------"
}

1install_packages(){
echo -e "${TextColorYellow}[NOTE   ]${TextColorNone}\tChecking if apache2 and apache2-mod_php7 are installed"
case "${distribution}" in
	"suse opensuse" | "opensuse suse")
		for package in ${pkg_required}
		do
			zypper se -i $package &> /dev/null
			pkg_installed=$((${pkg_installed} + $?))
		done
		if [ ${pkg_installed} -ne 0 ]
		then
			echo -e "${TextColorYellow}[INSTALL]${TextColorNone}\tInstalling required packages"
			sudo zypper install -y ${pkg_required} &> /dev/null
		else
			echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\tRequired packages are alread installed"
		fi
		if ! grep "DirectoryIndex" ${path_file_conf} | grep -q "index.php"
		then
			echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\tPhp is already supported by the apache configuration"
		else
			echo -e "${TextColorYellow}[CONFIG ]${TextColorNone}\tAdding index.php to /etc/apache2/httpd.conf"
			sudo sed -in '/DirectoryIndex/s/$/ index.php/' ${path_file_conf}
		fi
		if ! sudo a2enmod -l | grep -q php7
		then
			echo -e "${TextColorYellow}[CONFIG ]${TextColorNone}\tEnabling php module"
			sudo a2enmod php7
		else
			echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\tPhp module already active"
		fi
	;;

	"redhat" | "fedora" | "centos")
		sudo yum install -y apache2 apache2-mod_php7
	;;

	"arch")
		sudo pacman -S apache2 apache2-mod_php7
	;;

	"debian" | "ubuntu")
		sudo apt-get install -y apache2 libapache2-mod-php
		sudo a2enmod php7.3
	;;

	*)
		echo -e "${TextColorRed}[ERROR  ]${TextColorNone}\tCant find any suitable OS"
		exit
		;;
esac
if ! groups ${USER} | grep -q "www"
then
	echo -e "${TextColorYellow}[CONFIG ]${TextColorNone}\tAdding $USER to group www"
	sudo usermod -aG www ${USER}
else
	echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\t$USER is already part of group www"
fi
if systemctl list-unit-files | grep -e "apache2.service" | grep -qe  "enabled"
then
	echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\tWebserver already enabled"
else
	echo -e "${TextColorYellow}[CONFIG ]${TextColorNone}\tEnabling webserver"
	sudo systemctl enable --now apache2.service &> /dev/null
fi
}

2create_folder(){
if [ -d "${path_folder_shc}" ];
	then
		echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\t${path_folder_shc} already exists"
	else
		echo -e "${TextColorYellow}[NOTE   ]${TextColorNone}\tCreating ${path_folder_shc}"
        mkdir ${path_folder_shc}
fi
}

3copy_files(){
for script in ${active_scripts}
do
	diff "${PWD}/shc_scripts/${script}.sh" "${path_folder_shc}/${script}.sh" &> /dev/null
	case $? in
	0)
		echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\t${script}.sh is up to date"
		;;
	1)
		cp "${PWD}/shc_scripts/${script}.sh" "${path_folder_shc}/${script}.sh"
		echo -e "${TextColorYellow}[NOTE   ]${TextColorNone}\t${script}.sh got updated"
		;;
	*)
		cp "${PWD}/shc_scripts/${script}.sh" "${path_folder_shc}/${script}.sh"
		echo -e "${TextColorYellow}[NOTE   ]${TextColorNone}\t${script}.sh was created"
		;;
	esac
done
}

4move_index(){
case "${distribution}" in
	"suse opensuse" | "opensuse suse" | "redhat" | "fedora" | "centos" | "arch")
		# use default path
		;;
	"debian")
		path_file_index="/var/www/html"
		if test -f ${path_file_index}/index.html;
		then
			sudo mv ${path_file_index}/index.html ${path_file_index}/index.html.bkp
			echo -e "${TextColorYellow}[NOTE   ]${TextColorNone}\tindex.html was renamed to index.html.bkp"
		fi
		;;
	*)
		echo -e "${TextColorRed}[ERROR  ]${TextColorNone}\tCant find any suitable OS"
		exit
		;;
esac
if diff "${PWD}/webserver_files/${name_site}" "${path_file_index}" &> /dev/null
then
	echo -e "${TextColorGreen}[NOTE   ]${TextColorNone}\tindex.ph file already up to date"
else
	sudo cp ${PWD}/webserver_files/${name_site} ${path_file_index}
	sudo chown ${USER}:users ${path_file_index}/${name_site}
	echo -e "${TextColorYellow}[CONFIG ]${TextColorNone}\tindex.php moved to ${path_file_index}/${name_site}"
fi
}

echo -e "${TextColorGreen}[ S H C ]${TextColorNone}\tStart installation of ServerHealtCheck v${shc_version}"
# run every function in this script except splitter
for task in $(declare -F | grep -v splitter | cut -d' ' -f3)
do
	splitter
	$task
done
splitter
echo -e "${TextColorGreen}[ S H C ]${TextColorNone}\tSHC is now available via your webbrowser on http://${ip}!"
splitter