hestiacp/install/hst-install-debian.sh

#!/bin/bash

# ======================================================== #
#
# Hestia Control Panel Installer for Debian
# https://www.hestiacp.com/
#
# Currently Supported Versions:
# Debian 10, 11
#
# ======================================================== #

#----------------------------------------------------------#
#                  Variables&Functions                     #
#----------------------------------------------------------#
export PATH=$PATH:/sbin
export DEBIAN_FRONTEND=noninteractive
RHOST='apt.hestiacp.com'
GPG='gpg.hestiacp.com'
VERSION='debian'
HESTIA='/usr/local/hestia'
LOG="/root/hst_install_backups/hst_install-$(date +%d%m%Y%H%M).log"
memory=$(grep 'MemTotal' /proc/meminfo | tr ' ' '\n' | grep [0-9])
hst_backups="/root/hst_install_backups/$(date +%d%m%Y%H%M)"
spinner="/-\|"
os='debian'
architecture="$(arch)"
release=$(cat /etc/debian_version | tr "." "\n" | head -n1)
codename="$(cat /etc/os-release | grep VERSION= | cut -f 2 -d \( | cut -f 1 -d \))"
HESTIA_INSTALL_DIR="$HESTIA/install/deb"
HESTIA_COMMON_DIR="$HESTIA/install/common"
VERBOSE='no'

# Define software versions
HESTIA_INSTALL_VER='1.8.0~alpha'
# Dependencies
multiphp_v=("5.6" "7.0" "7.1" "7.2" "7.3" "7.4" "8.0" "8.1" "8.2")
fpm_v="8.0"
mariadb_v="10.6"

software="nginx apache2 apache2-utils apache2-suexec-custom
  apache2-suexec-pristine libapache2-mod-fcgid libapache2-mod-php$fpm_v
  php$fpm_v php$fpm_v-common php$fpm_v-cgi php$fpm_v-mysql php$fpm_v-curl
  php$fpm_v-pgsql php$fpm_v-imagick php$fpm_v-imap php$fpm_v-ldap
  php$fpm_v-apcu php$fpm_v-zip php$fpm_v-bz2 php$fpm_v-cli
  php$fpm_v-gd php$fpm_v-intl php$fpm_v-mbstring
  php$fpm_v-opcache php$fpm_v-pspell php$fpm_v-readline php$fpm_v-xml
  awstats vsftpd proftpd-basic bind9 exim4 exim4-daemon-heavy
  clamav-daemon spamassassin dovecot-imapd dovecot-pop3d dovecot-sieve dovecot-managesieved
  net-tools mariadb-client mariadb-common mariadb-server mysql-client mysql-common mysql-server postgresql
  postgresql-contrib phppgadmin mc flex whois git idn2 unzip zip sudo bc ftp lsof
  rrdtool quota e2fslibs bsdutils e2fsprogs curl imagemagick fail2ban
  dnsutils bsdmainutils cron hestia=${HESTIA_INSTALL_VER} hestia-nginx
  hestia-php expect libmail-dkim-perl unrar-free vim-common acl sysstat
  rsyslog openssh-server util-linux ipset libapache2-mpm-itk zstd
  lsb-release jq"

installer_dependencies="apt-transport-https curl dirmngr gnupg wget ca-certificates"

# Defining help function
help() {
	echo "Usage: $0 [OPTIONS]
  -a, --apache            Install Apache        [yes|no]  default: yes
  -w, --phpfpm            Install PHP-FPM       [yes|no]  default: yes
  -o, --multiphp          Install Multi-PHP     [yes|no]  default: no
  -v, --vsftpd            Install Vsftpd        [yes|no]  default: yes
  -j, --proftpd           Install ProFTPD       [yes|no]  default: no
  -k, --named             Install Bind          [yes|no]  default: yes
  -m, --mysql             Install MariaDB       [yes|no]  default: yes
  -M, --mysql-classic     Install MySQL         [yes|no]  default: no
  -g, --postgresql        Install PostgreSQL    [yes|no]  default: no
  -x, --exim              Install Exim          [yes|no]  default: yes
  -z, --dovecot           Install Dovecot       [yes|no]  default: yes
  -Z, --sieve             Install Sieve         [yes|no]  default: no
  -c, --clamav            Install ClamAV        [yes|no]  default: yes
  -t, --spamassassin      Install SpamAssassin  [yes|no]  default: yes
  -i, --iptables          Install Iptables      [yes|no]  default: yes
  -b, --fail2ban          Install Fail2ban      [yes|no]  default: yes
  -q, --quota             Filesystem Quota      [yes|no]  default: no
  -d, --api               Activate API          [yes|no]  default: yes
  -r, --port              Change Backend Port             default: 8083
  -l, --lang              Default language                default: en
  -y, --interactive       Interactive install   [yes|no]  default: yes
  -6, --ipv6              Enable IPv6 Support   [yes|no]  default: no
  -s, --hostname          Set hostname
  -e, --email             Set admin email
  -p, --password          Set admin password
  -D, --with-debs         Path to Hestia debs
  -f, --force             Force installation
  -h, --help              Print this help

  Example: bash $0 -e [email protected] -p p4ssw0rd --multiphp yes"
	exit 1
}

# Defining file download function
download_file() {
	wget $1 -q --show-progress --progress=bar:force
}

# Defining password-gen function
gen_pass() {
	matrix=$1
	length=$2
	if [ -z "$matrix" ]; then
		matrix="A-Za-z0-9"
	fi
	if [ -z "$length" ]; then
		length=16
	fi
	head /dev/urandom | tr -dc $matrix | head -c$length
}

# Defining return code check function
check_result() {
	if [ $1 -ne 0 ]; then
		echo "Error: $2"
		exit $1
	fi
}

# Defining function to set default value
set_default_value() {
	eval variable=\$$1
	if [ -z "$variable" ]; then
		eval $1=$2
	fi
	if [ "$variable" != 'yes' ] && [ "$variable" != 'no' ]; then
		eval $1=$2
	fi
}

# Defining function to set default language value
set_default_lang() {
	if [ -z "$lang" ]; then
		eval lang=$1
	fi
	lang_list="ar az bg bn bs ckb cs da de el en es fa fi fr hr hu id it ja ka ko nl no pl pt pt-br ro ru sk sr sv th tr uk ur vi zh-cn zh-tw"
	if ! (echo $lang_list | grep -w $lang > /dev/null 2>&1); then
		eval lang=$1
	fi
}

# Define the default backend port
set_default_port() {
	if [ -z "$port" ]; then
		eval port=$1
	fi
}

# Write configuration KEY/VALUE pair to $HESTIA/conf/hestia.conf
write_config_value() {
	local key="$1"
	local value="$2"
	echo "$key='$value'" >> $HESTIA/conf/hestia.conf
}

# Sort configuration file values
# Write final copy to $HESTIA/conf/hestia.conf for active usage
# Duplicate file to $HESTIA/conf/defaults/hestia.conf to restore known good installation values
sort_config_file() {
	sort $HESTIA/conf/hestia.conf -o /tmp/updconf
	mv $HESTIA/conf/hestia.conf $HESTIA/conf/hestia.conf.bak
	mv /tmp/updconf $HESTIA/conf/hestia.conf
	rm -f $HESTIA/conf/hestia.conf.bak
	if [ ! -d "$HESTIA/conf/defaults/" ]; then
		mkdir -p "$HESTIA/conf/defaults/"
	fi
	cp $HESTIA/conf/hestia.conf $HESTIA/conf/defaults/hestia.conf
}

# Validate hostname according to RFC1178
validate_hostname() {
	# remove extra .
	servername=$(echo "$servername" | sed -e "s/[.]*$//g")
	servername=$(echo "$servername" | sed -e "s/^[.]*//")
	if [[ $(echo "$servername" | grep -o "\." | wc -l) -gt 1 ]] && [[ ! $servername =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
		# Hostname valid
		return 1
	else
		# Hostname invalid
		return 0
	fi
}

validate_email() {
	if [[ ! "$email" =~ ^[A-Za-z0-9._%+-]+@[[:alnum:].-]+\.[A-Za-z]{2,63}$ ]]; then
		# Email invalid
		return 0
	else
		# Email valid
		return 1
	fi
}

#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

# Creating temporary file
tmpfile=$(mktemp -p /tmp)

# Translating argument to --gnu-long-options
for arg; do
	delim=""
	case "$arg" in
		--apache) args="${args}-a " ;;
		--phpfpm) args="${args}-w " ;;
		--vsftpd) args="${args}-v " ;;
		--proftpd) args="${args}-j " ;;
		--named) args="${args}-k " ;;
		--mysql) args="${args}-m " ;;
		--mysql-classic) args="${args}-M " ;;
		--postgresql) args="${args}-g " ;;
		--exim) args="${args}-x " ;;
		--dovecot) args="${args}-z " ;;
		--sieve) args="${args}-Z " ;;
		--clamav) args="${args}-c " ;;
		--spamassassin) args="${args}-t " ;;
		--iptables) args="${args}-i " ;;
		--fail2ban) args="${args}-b " ;;
		--multiphp) args="${args}-o " ;;
		--quota) args="${args}-q " ;;
		--port) args="${args}-r " ;;
		--lang) args="${args}-l " ;;
		--interactive) args="${args}-y " ;;
		--ipv6) args="${args}-6 " ;;
		--api) args="${args}-d " ;;
		--hostname) args="${args}-s " ;;
		--email) args="${args}-e " ;;
		--password) args="${args}-p " ;;
		--force) args="${args}-f " ;;
		--with-debs) args="${args}-D " ;;
		--help) args="${args}-h " ;;
		*)
			[[ "${arg:0:1}" == "-" ]] || delim="\""
			args="${args}${delim}${arg}${delim} "
			;;
	esac
done
eval set -- "$args"

# Parsing arguments
while getopts "a:w:v:j:k:m:M:g:d:x:z:Z:c:t:i:b:r:o:q:l:y:6:s:e:p:D:fh" Option; do
	case $Option in
		a) apache=$OPTARG ;;       # Apache
		w) phpfpm=$OPTARG ;;       # PHP-FPM
		o) multiphp=$OPTARG ;;     # Multi-PHP
		v) vsftpd=$OPTARG ;;       # Vsftpd
		j) proftpd=$OPTARG ;;      # Proftpd
		k) named=$OPTARG ;;        # Named
		m) mysql=$OPTARG ;;        # MariaDB
		M) mysqlclassic=$OPTARG ;; # MySQL
		g) postgresql=$OPTARG ;;   # PostgreSQL
		x) exim=$OPTARG ;;         # Exim
		z) dovecot=$OPTARG ;;      # Dovecot
		Z) sieve=$OPTARG ;;        # Sieve
		c) clamd=$OPTARG ;;        # ClamAV
		t) spamd=$OPTARG ;;        # SpamAssassin
		i) iptables=$OPTARG ;;     # Iptables
		b) fail2ban=$OPTARG ;;     # Fail2ban
		q) quota=$OPTARG ;;        # FS Quota
		r) port=$OPTARG ;;         # Backend Port
		l) lang=$OPTARG ;;         # Language
		d) api=$OPTARG ;;          # Activate API
		y) interactive=$OPTARG ;;  # Interactive install
		6) ipv6=$OPTARG ;;         # IPv6
		s) servername=$OPTARG ;;   # Hostname
		e) email=$OPTARG ;;        # Admin email
		p) vpass=$OPTARG ;;        # Admin password
		D) withdebs=$OPTARG ;;     # Hestia debs path
		f) force='yes' ;;          # Force install
		h) help ;;                 # Help
		*) help ;;                 # Print help (default)
	esac
done

# Defining default software stack
set_default_value 'nginx' 'yes'
set_default_value 'apache' 'yes'
set_default_value 'phpfpm' 'yes'
set_default_value 'multiphp' 'no'
set_default_value 'vsftpd' 'yes'
set_default_value 'proftpd' 'no'
set_default_value 'named' 'yes'
set_default_value 'mysql' 'yes'
set_default_value 'mysqlclassic' 'no'
set_default_value 'postgresql' 'no'
set_default_value 'exim' 'yes'
set_default_value 'dovecot' 'yes'
set_default_value 'sieve' 'no'
if [ $memory -lt 1500000 ]; then
	set_default_value 'clamd' 'no'
	set_default_value 'spamd' 'no'
elif [ $memory -lt 3000000 ]; then
	set_default_value 'clamd' 'no'
	set_default_value 'spamd' 'yes'
else
	set_default_value 'clamd' 'yes'
	set_default_value 'spamd' 'yes'
fi
set_default_value 'iptables' 'yes'
set_default_value 'fail2ban' 'yes'
set_default_value 'quota' 'no'
set_default_value 'interactive' 'yes'
set_default_value 'ipv6' 'no'
set_default_value 'api' 'yes'
set_default_port '8083'
set_default_lang 'en'

# Checking software conflicts
if [ "$proftpd" = 'yes' ]; then
	vsftpd='no'
fi
if [ "$exim" = 'no' ]; then
	clamd='no'
	spamd='no'
	dovecot='no'
fi
if [ "$dovecot" = "no" ]; then
	sieve='no'
fi
if [ "$iptables" = 'no' ]; then
	fail2ban='no'
fi
if [ "$apache" = "no" ]; then
	phpfpm='yes'
fi
if [ "$mysql" = 'yes' ] && [ "$mysqlclassic" = 'yes' ]; then
	mysql='no'
fi

# Checking root permissions
if [ "x$(id -u)" != 'x0' ]; then
	check_result 1 "Script can be run executed only by root"
fi

if [ -d "/usr/local/hestia" ]; then
	check_result 1 "Hestia install detected. Unable to continue"
fi

# Checking admin user account
if [ -n "$(grep ^admin: /etc/passwd /etc/group)" ] && [ -z "$force" ]; then
	echo 'Please remove admin user account before proceeding.'
	echo 'If you want to do it automatically run installer with -f option:'
	echo -e "Example: bash $0 --force\n"
	check_result 1 "User admin exists"
fi

# Clear the screen once launch permissions have been verified
clear

# Configure apt to retry downloading on error
if [ ! -f /etc/apt/apt.conf.d/80-retries ]; then
	echo "APT::Acquire::Retries \"3\";" > /etc/apt/apt.conf.d/80-retries
fi

# Welcome message
echo "Welcome to the Hestia Control Panel installer!"
echo
echo "Please wait, the installer is now checking for missing dependencies..."
echo

# Update apt repository
apt-get -qq update

# Creating backup directory
mkdir -p "$hst_backups"

# Pre-install packages
echo "[ * ] Installing dependencies..."
apt-get -y install $installer_dependencies >> $LOG
check_result $? "Package installation failed, check log file for more details."

# Check if apparmor is installed
if [ $(dpkg-query -W -f='${Status}' apparmor 2> /dev/null | grep -c "ok installed") -eq 0 ]; then
	apparmor='no'
else
	apparmor='yes'
fi

# Checking repository availability
wget --quiet "https://$GPG/deb_signing.key" -O /dev/null
check_result $? "Unable to connect to the Hestia APT repository"

# Check installed packages
tmpfile=$(mktemp -p /tmp)
dpkg --get-selections > $tmpfile
conflicts_pkg="exim4 mariadb-server apache2 nginx hestia postfix"

# Drop postfix from the list if exim should not be installed
if [ "$exim" = 'no' ]; then
	conflicts_pkg=$(echo $conflicts_pkg | sed 's/postfix//g' | xargs)
fi

for pkg in $conflicts_pkg; do
	if [ -n "$(grep $pkg $tmpfile)" ]; then
		conflicts="$pkg* $conflicts"
	fi
done
rm -f $tmpfile
if [ -n "$conflicts" ] && [ -z "$force" ]; then
	echo '!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!'
	echo
	echo 'WARNING: The following packages are already installed'
	echo "$conflicts"
	echo
	echo 'It is highly recommended that you remove them before proceeding.'
	echo
	echo '!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!'
	echo
	read -p 'Would you like to remove the conflicting packages? [y/n] ' answer
	if [ "$answer" = 'y' ] || [ "$answer" = 'Y' ]; then
		apt-get -qq purge $conflicts -y
		check_result $? 'apt-get remove failed'
		unset $answer
	else
		check_result 1 "Hestia Control Panel should be installed on a clean server."
	fi
fi

# Check network configuration
if [ -d /etc/netplan ] && [ -z "$force" ]; then
	if [ -z "$(ls -A /etc/netplan)" ]; then
		echo '!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!'
		echo
		echo 'WARNING: Your network configuration may not be set up correctly.'
		echo 'Details: The netplan configuration directory is empty.'
		echo ''
		echo 'You may have a network configuration file that was created using'
		echo 'systemd-networkd.'
		echo ''
		echo 'It is strongly recommended to migrate to netplan, which is now the'
		echo 'default network configuration system in newer releases of Ubuntu.'
		echo ''
		echo 'While you can leave your configuration as-is, please note that you'
		echo 'will not be able to use additional IPs properly.'
		echo ''
		echo 'If you wish to continue and force the installation,'
		echo 'run this script with -f option:'
		echo "Example: bash $0 --force"
		echo
		echo '!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!'
		echo
		check_result 1 "Unable to detect netplan configuration."
	fi
fi

# Validate whether installation script matches release version before continuing with install
if [ -z "$withdebs" ] || [ ! -d "$withdebs" ]; then
	release_branch_ver=$(curl -s https://raw.githubusercontent.com/hestiacp/hestiacp/release/src/deb/hestia/control | grep "Version:" | awk '{print $2}')
	if [ "$HESTIA_INSTALL_VER" != "$release_branch_ver" ]; then
		echo
		echo -e "\e[91mInstallation aborted\e[0m"
		echo "===================================================================="
		echo -e "\e[33mERROR: Install script version does not match package version!\e[0m"
		echo -e "\e[33mPlease download the installer from the release branch in order to continue:\e[0m"
		echo ""
		echo -e "\e[33mhttps://raw.githubusercontent.com/hestiacp/hestiacp/release/install/hst-install.sh\e[0m"
		echo ""
		echo -e "\e[33mTo test pre-release versions, build the .deb packages and re-run the installer:\e[0m"
		echo -e "  \e[33m./hst_autocompile.sh \e[1m--hestia branchname no\e[21m\e[0m"
		echo -e "  \e[33m./hst-install.sh .. \e[1m--with-debs /tmp/hestiacp-src/debs\e[21m\e[0m"
		echo ""
		check_result 1 "Installation aborted"
	fi
fi

case $architecture in
	x86_64)
		ARCH="amd64"
		;;
	aarch64)
		ARCH="arm64"
		;;
	*)
		echo
		echo -e "\e[91mInstallation aborted\e[0m"
		echo "===================================================================="
		echo -e "\e[33mERROR: $architecture is currently not supported!\e[0m"
		echo -e "\e[33mPlease verify the achitecture used is currenlty supported\e[0m"
		echo ""
		echo -e "\e[33mhttps://github.com/hestiacp/hestiacp/blob/main/README.md\e[0m"
		echo ""
		check_result 1 "Installation aborted"
		;;
esac

#----------------------------------------------------------#
#                       Brief Info                         #
#----------------------------------------------------------#

install_welcome_message() {
	DISPLAY_VER=$(echo $HESTIA_INSTALL_VER | sed "s|~alpha||g" | sed "s|~beta||g")
	echo
	echo '                _   _           _   _        ____ ____                  '
	echo '               | | | | ___  ___| |_(_) __ _ / ___|  _ \                 '
	echo '               | |_| |/ _ \/ __| __| |/ _` | |   | |_) |                '
	echo '               |  _  |  __/\__ \ |_| | (_| | |___|  __/                 '
	echo '               |_| |_|\___||___/\__|_|\__,_|\____|_|                    '
	echo "                                                                        "
	echo "                          Hestia Control Panel                          "
	if [[ "$HESTIA_INSTALL_VER" =~ "beta" ]]; then
		echo "                              BETA RELEASE                          "
	fi
	if [[ "$HESTIA_INSTALL_VER" =~ "alpha" ]]; then
		echo "                          DEVELOPMENT SNAPSHOT                      "
		echo "                    NOT INTENDED FOR PRODUCTION USE                 "
		echo "                          USE AT YOUR OWN RISK                      "
	fi
	echo "                                  ${DISPLAY_VER}                        "
	echo "                            www.hestiacp.com                            "
	echo
	echo "========================================================================"
	echo
	echo "Thank you for downloading Hestia Control Panel! In a few moments,"
	echo "we will begin installing the following components on your server:"
	echo
}

# Printing nice ASCII logo
clear
install_welcome_message

# Web stack

echo '   - NGINX Web / Proxy Server'
if [ "$apache" = 'yes' ]; then
	echo '   - Apache Web Server (as backend)'
fi
if [ "$phpfpm" = 'yes' ] && [ "$multiphp" = 'no' ]; then
	echo '   - PHP-FPM Application Server'
fi
if [ "$multiphp" = 'yes' ]; then
	phpfpm='yes'
	echo '   - Multi-PHP Environment'
fi

# DNS stack
if [ "$named" = 'yes' ]; then
	echo '   - Bind DNS Server'
fi

# Mail stack
if [ "$exim" = 'yes' ]; then
	echo -n '   - Exim Mail Server'
	if [ "$clamd" = 'yes' ] || [ "$spamd" = 'yes' ]; then
		echo -n ' + '
		if [ "$clamd" = 'yes' ]; then
			echo -n 'ClamAV '
		fi
		if [ "$spamd" = 'yes' ]; then
			if [ "$clamd" = 'yes' ]; then
				echo -n '+ '
			fi
			echo -n 'SpamAssassin'
		fi
	fi
	echo
	if [ "$dovecot" = 'yes' ]; then
		echo -n '   - Dovecot POP3/IMAP Server '
		if [ "$sieve" = 'yes' ]; then
			echo -n '+ Sieve'
		fi
	fi
fi

echo
# Database stack
if [ "$mysql" = 'yes' ]; then
	echo '   - MariaDB Database Server'
fi
if [ "$mysqlclassic" = 'yes' ]; then
	echo '   - MySQL8 Database Server'
fi
if [ "$postgresql" = 'yes' ]; then
	echo '   - PostgreSQL Database Server'
fi

# FTP stack
if [ "$vsftpd" = 'yes' ]; then
	echo '   - Vsftpd FTP Server'
fi
if [ "$proftpd" = 'yes' ]; then
	echo '   - ProFTPD FTP Server'
fi

# Firewall stack
if [ "$iptables" = 'yes' ]; then
	echo -n '   - Firewall (iptables)'
fi
if [ "$iptables" = 'yes' ] && [ "$fail2ban" = 'yes' ]; then
	echo -n ' + Fail2Ban Access Monitor'
fi
echo -e "\n"
echo "========================================================================"
echo -e "\n"

# Asking for confirmation to proceed
if [ "$interactive" = 'yes' ]; then
	read -p 'Would you like to continue with the installation? [Y/N]: ' answer
	if [ "$answer" != 'y' ] && [ "$answer" != 'Y' ]; then
		echo 'Goodbye'
		exit 1
	fi
fi

# Validate Email / Hostname even when interactive = no
# Asking for contact email
if [ -z "$email" ]; then
	while validate_email; do
		echo -e "\nPlease use a valid emailadress (ex. [email protected])."
		read -p 'Please enter admin email address: ' email
	done
else
	if validate_email; then
		echo "Please use a valid emailadress (ex. [email protected])."
		exit 1
	fi
fi

# Asking to set FQDN hostname
if [ -z "$servername" ]; then
	# Ask and validate FQDN hostname.
	read -p "Please enter FQDN hostname [$(hostname -f)]: " servername

	# Set hostname if it wasn't set
	if [ -z "$servername" ]; then
		servername=$(hostname -f)
	fi

	# Validate Hostname, go to loop if the validation fails.
	while validate_hostname; do
		echo -e "\nPlease use a valid hostname according to RFC1178 (ex. hostname.domain.tld)."
		read -p "Please enter FQDN hostname [$(hostname -f)]: " servername
	done
else
	# Validate FQDN hostname if it is preset
	if validate_hostname; then
		echo "Please use a valid hostname according to RFC1178 (ex. hostname.domain.tld)."
		exit 1
	fi
fi

# Generating admin password if it wasn't set
displaypass="The password you chose during installation."
if [ -z "$vpass" ]; then
	vpass=$(gen_pass)
	displaypass=$vpass
fi

# Set FQDN if it wasn't set
mask1='(([[:alnum:]](-?[[:alnum:]])*)\.)'
mask2='*[[:alnum:]](-?[[:alnum:]])+\.[[:alnum:]]{2,}'
if ! [[ "$servername" =~ ^${mask1}${mask2}$ ]]; then
	if [[ -n "$servername" ]]; then
		servername="$servername.example.com"
	else
		servername="example.com"
	fi
    echo "127.0.0.1 $servername" >> /etc/hosts
    if [ "$ipv6" = 'yes' ]; then
        echo "::1 $servername" >> /etc/hosts
    fi
fi

if [[ -z $(grep -i "$servername" /etc/hosts) ]]; then
    echo "127.0.0.1 $servername" >> /etc/hosts
    if [ "$ipv6" = 'yes' ]; then
        echo "::1 $servername" >> /etc/hosts
    fi
fi

# Set email if it wasn't set
if [[ -z "$email" ]]; then
	email="admin@$servername"
fi

# Defining backup directory
echo -e "Installation backup directory: $hst_backups"

# Print Log File Path
echo "Installation log file: $LOG"

# Print new line
echo

#----------------------------------------------------------#
#                      Checking swap                       #
#----------------------------------------------------------#

# Checking swap on small instances
if [ -z "$(swapon -s)" ] && [ "$memory" -lt 1000000 ]; then
	fallocate -l 1G /swapfile
	chmod 600 /swapfile
	mkswap /swapfile
	swapon /swapfile
	echo "/swapfile   none    swap    sw    0   0" >> /etc/fstab
fi

#----------------------------------------------------------#
#                   Install repository                     #
#----------------------------------------------------------#

# Define apt conf location
apt=/etc/apt/sources.list.d

#create new folder if not all-ready exists
mkdir -p /root/.gnupg/ && chmod 700 /root/.gnupg/

# Updating system
echo "Adding required repositories to proceed with installation:"
echo

# Installing Nginx repo

echo "[ * ] NGINX"
echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/nginx-keyring.gpg] https://nginx.org/packages/mainline/$VERSION/ $codename nginx" > $apt/nginx.list
curl -s https://nginx.org/keys/nginx_signing.key | gpg --dearmor | tee /usr/share/keyrings/nginx-keyring.gpg > /dev/null 2>&1

# Installing sury PHP repo
echo "[ * ] PHP"
echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/sury-keyring.gpg] https://packages.sury.org/php/ $codename main" > $apt/php.list
curl -s https://packages.sury.org/php/apt.gpg | gpg --dearmor | tee /usr/share/keyrings/sury-keyring.gpg > /dev/null 2>&1

# Installing sury Apache2 repo
if [ "$apache" = 'yes' ]; then
	echo "[ * ] Apache2"
	echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/apache2-keyring.gpg] https://packages.sury.org/apache2/ $codename main" > $apt/apache2.list
	curl -s https://packages.sury.org/apache2/apt.gpg | gpg --dearmor | tee /usr/share/keyrings/apache2-keyring.gpg > /dev/null 2>&1
fi

# Installing MariaDB repo
if [ "$mysql" = 'yes' ]; then
	echo "[ * ] MariaDB"
	echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/mariadb-keyring.gpg] https://dlm.mariadb.com/repo/mariadb-server/$mariadb_v/repo/$VERSION $codename main" > $apt/mariadb.list
	curl -s https://mariadb.org/mariadb_release_signing_key.asc | gpg --dearmor | tee /usr/share/keyrings/mariadb-keyring.gpg > /dev/null 2>&1
fi

# Installing Mysql8 repo
if [ "$mysqlclassic" = 'yes' ]; then
	echo "[ * ] Mysql 8"
	echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/mysql-keyring.gpg] http://repo.mysql.com/apt/debian/ $codename mysql-apt-config" >> /etc/apt/sources.list.d/mysql.list
	echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/mysql-keyring.gpg] http://repo.mysql.com/apt/debian/ $codename mysql-8.0" >> /etc/apt/sources.list.d/mysql.list
	echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/mysql-keyring.gpg] http://repo.mysql.com/apt/debian/ $codename mysql-tools" >> /etc/apt/sources.list.d/mysql.list
	echo "#deb [arch=$ARCH signed-by=/usr/share/keyrings/mysql-keyring.gpg] http://repo.mysql.com/apt/debian/ $codename mysql-tools-preview" >> /etc/apt/sources.list.d/mysql.list
	echo "deb-src [arch=$ARCH signed-by=/usr/share/keyrings/mysql-keyring.gpg] http://repo.mysql.com/apt/debian/ $codename mysql-8.0" >> /etc/apt/sources.list.d/mysql.list

	GNUPGHOME="$(mktemp -d)"
	export GNUPGHOME
	for keyserver in $(shuf -e ha.pool.sks-keyservers.net hkp://p80.pool.sks-keyservers.net:80 keyserver.ubuntu.com hkp://keyserver.ubuntu.com:80); do
		gpg --no-default-keyring --keyring /usr/share/keyrings/mysql-keyring.gpg --keyserver "${keyserver}" --recv-keys "467B942D3A79BD29" > /dev/null 2>&1 && break
	done
fi

# Installing HestiaCP repo
echo "[ * ] Hestia Control Panel"
echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/hestia-keyring.gpg] https://$RHOST/ $codename main" > $apt/hestia.list
gpg --no-default-keyring --keyring /usr/share/keyrings/hestia-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys A189E93654F0B0E5 > /dev/null 2>&1

# Installing PostgreSQL repo
if [ "$postgresql" = 'yes' ]; then
	echo "[ * ] PostgreSQL"
	echo "deb [arch=$ARCH signed-by=/usr/share/keyrings/postgresql-keyring.gpg] https://apt.postgresql.org/pub/repos/apt/ $codename-pgdg main" > $apt/postgresql.list
	curl -s https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmor | tee /usr/share/keyrings/postgresql-keyring.gpg > /dev/null 2>&1
fi

# Echo for a new line
echo

# Updating system
echo -ne "Updating currently installed packages, please wait... "
apt-get -qq update
apt-get -y upgrade >> $LOG &
BACK_PID=$!

# Check if package installation is done, print a spinner
spin_i=1
while kill -0 $BACK_PID > /dev/null 2>&1; do
	printf "\b${spinner:spin_i++%${#spinner}:1}"
	sleep 0.5
done

# Do a blank echo to get the \n back
echo

# Check Installation result
wait $BACK_PID
check_result $? 'apt-get upgrade failed'

#----------------------------------------------------------#
#                         Backup                           #
#----------------------------------------------------------#

# Creating backup directory tree
mkdir -p $hst_backups
cd $hst_backups
mkdir nginx apache2 php vsftpd proftpd bind exim4 dovecot clamd
mkdir spamassassin mysql postgresql hestia

# Backup nginx configuration
systemctl stop nginx > /dev/null 2>&1
cp -r /etc/nginx/* $hst_backups/nginx > /dev/null 2>&1

# Backup Apache configuration
systemctl stop apache2 > /dev/null 2>&1
cp -r /etc/apache2/* $hst_backups/apache2 > /dev/null 2>&1
rm -f /etc/apache2/conf.d/* > /dev/null 2>&1

# Backup PHP-FPM configuration
systemctl stop php*-fpm > /dev/null 2>&1
cp -r /etc/php/* $hst_backups/php/ > /dev/null 2>&1

# Backup Bind configuration
systemctl stop bind9 > /dev/null 2>&1
cp -r /etc/bind/* $hst_backups/bind > /dev/null 2>&1

# Backup Vsftpd configuration
systemctl stop vsftpd > /dev/null 2>&1
cp /etc/vsftpd.conf $hst_backups/vsftpd > /dev/null 2>&1

# Backup ProFTPD configuration
systemctl stop proftpd > /dev/null 2>&1
cp /etc/proftpd/* $hst_backups/proftpd > /dev/null 2>&1

# Backup Exim configuration
systemctl stop exim4 > /dev/null 2>&1
cp -r /etc/exim4/* $hst_backups/exim4 > /dev/null 2>&1

# Backup ClamAV configuration
systemctl stop clamav-daemon > /dev/null 2>&1
cp -r /etc/clamav/* $hst_backups/clamav > /dev/null 2>&1

# Backup SpamAssassin configuration
systemctl stop spamassassin > /dev/null 2>&1
cp -r /etc/spamassassin/* $hst_backups/spamassassin > /dev/null 2>&1

# Backup Dovecot configuration
systemctl stop dovecot > /dev/null 2>&1
cp /etc/dovecot.conf $hst_backups/dovecot > /dev/null 2>&1
cp -r /etc/dovecot/* $hst_backups/dovecot > /dev/null 2>&1

# Backup MySQL/MariaDB configuration and data
systemctl stop mysql > /dev/null 2>&1
killall -9 mysqld > /dev/null 2>&1
mv /var/lib/mysql $hst_backups/mysql/mysql_datadir > /dev/null 2>&1
cp -r /etc/mysql/* $hst_backups/mysql > /dev/null 2>&1
mv -f /root/.my.cnf $hst_backups/mysql > /dev/null 2>&1

# Backup Hestia
systemctl stop hestia > /dev/null 2>&1
cp -r $HESTIA/* $hst_backups/hestia > /dev/null 2>&1
apt-get -y purge hestia hestia-nginx hestia-php > /dev/null 2>&1
rm -rf $HESTIA > /dev/null 2>&1

#----------------------------------------------------------#
#                     Package Includes                     #
#----------------------------------------------------------#

if [ "$phpfpm" = 'yes' ]; then
	fpm="php$fpm_v php$fpm_v-common php$fpm_v-bcmath php$fpm_v-cli
         php$fpm_v-curl php$fpm_v-fpm php$fpm_v-gd php$fpm_v-intl
         php$fpm_v-mysql php$fpm_v-soap php$fpm_v-xml php$fpm_v-zip
         php$fpm_v-mbstring php$fpm_v-bz2 php$fpm_v-pspell
         php$fpm_v-imagick"
	software="$software $fpm"
fi

#----------------------------------------------------------#
#                     Package Excludes                     #
#----------------------------------------------------------#

# Excluding packages
software=$(echo "$software" | sed -e "s/apache2.2-common//")

if [ "$apache" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/apache2 //")
	software=$(echo "$software" | sed -e "s/apache2-bin//")
	software=$(echo "$software" | sed -e "s/apache2-utils//")
	software=$(echo "$software" | sed -e "s/apache2-suexec-custom//")
	software=$(echo "$software" | sed -e "s/apache2.2-common//")
	software=$(echo "$software" | sed -e "s/libapache2-mod-rpaf//")
	software=$(echo "$software" | sed -e "s/libapache2-mod-fcgid//")
	software=$(echo "$software" | sed -e "s/libapache2-mod-php$fpm_v//")
fi
if [ "$vsftpd" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/vsftpd//")
fi
if [ "$proftpd" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/proftpd-basic//")
	software=$(echo "$software" | sed -e "s/proftpd-mod-vroot//")
fi
if [ "$named" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/bind9//")
fi
if [ "$exim" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/exim4 //")
	software=$(echo "$software" | sed -e "s/exim4-daemon-heavy//")
	software=$(echo "$software" | sed -e "s/dovecot-imapd//")
	software=$(echo "$software" | sed -e "s/dovecot-pop3d//")
	software=$(echo "$software" | sed -e "s/clamav-daemon//")
	software=$(echo "$software" | sed -e "s/spamassassin//")
	software=$(echo "$software" | sed -e "s/dovecot-sieve//")
	software=$(echo "$software" | sed -e "s/dovecot-managesieved//")
fi
if [ "$clamd" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/clamav-daemon//")
fi
if [ "$spamd" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/spamassassin//")
fi
if [ "$dovecot" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/dovecot-imapd//")
	software=$(echo "$software" | sed -e "s/dovecot-pop3d//")
fi
if [ "$sieve" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/dovecot-sieve//")
	software=$(echo "$software" | sed -e "s/dovecot-managesieved//")
fi
if [ "$mysql" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/mariadb-server//")
	software=$(echo "$software" | sed -e "s/mariadb-client//")
	software=$(echo "$software" | sed -e "s/mariadb-common//")
fi
if [ "$mysqlclassic" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/mysql-server//")
	software=$(echo "$software" | sed -e "s/mysql-client//")
	software=$(echo "$software" | sed -e "s/mysql-common//")
fi
if [ "$mysql" = 'no' ] && [ "$mysqlclassic" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/php$fpm_v-mysql//")
fi
if [ "$postgresql" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/postgresql-contrib//")
	software=$(echo "$software" | sed -e "s/postgresql//")
	software=$(echo "$software" | sed -e "s/php$fpm_v-pgsql//")
	software=$(echo "$software" | sed -e "s/phppgadmin//")
fi
if [ "$fail2ban" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/fail2ban//")
fi
if [ "$iptables" = 'no' ]; then
	software=$(echo "$software" | sed -e "s/ipset//")
	software=$(echo "$software" | sed -e "s/fail2ban//")
fi
if [ "$phpfpm" = 'yes' ]; then
	software=$(echo "$software" | sed -e "s/php$fpm_v-cgi//")
	software=$(echo "$software" | sed -e "s/libapache2-mpm-itk//")
	software=$(echo "$software" | sed -e "s/libapache2-mod-ruid2//")
	software=$(echo "$software" | sed -e "s/libapache2-mod-php$fpm_v//")

fi
if [ -d "$withdebs" ]; then
	software=$(echo "$software" | sed -e "s/hestia-nginx//")
	software=$(echo "$software" | sed -e "s/hestia-php//")
	software=$(echo "$software" | sed -e "s/hestia=${HESTIA_INSTALL_VER}//")
fi

#----------------------------------------------------------#
#                     Install packages                     #
#----------------------------------------------------------#

# Disabling daemon autostart on apt-get install
echo -e '#!/bin/sh\nexit 101' > /usr/sbin/policy-rc.d
chmod a+x /usr/sbin/policy-rc.d

# Installing apt packages
echo "The installer is now downloading and installing all required packages."
echo -ne "NOTE: This process may take 10 to 15 minutes to complete, please wait... "
echo
apt-get -y install $software > $LOG
BACK_PID=$!

# Check if package installation is done, print a spinner
spin_i=1
while kill -0 $BACK_PID > /dev/null 2>&1; do
	printf "\b${spinner:spin_i++%${#spinner}:1}"
	sleep 0.5
done

# Do a blank echo to get the \n back
echo

# Check Installation result
wait $BACK_PID
check_result $? "apt-get install failed"

echo
echo "========================================================================"
echo

# Install Hestia packages from local folder
if [ -n "$withdebs" ] && [ -d "$withdebs" ]; then
	echo "[ * ] Installing local package files..."
	echo "    - hestia core package"
	dpkg -i $withdebs/hestia_*.deb > /dev/null 2>&1

	if [ -z $(ls $withdebs/hestia-php_*.deb 2> /dev/null) ]; then
		echo "    - hestia-php backend package (from apt)"
		apt-get -y install hestia-php > /dev/null 2>&1
	else
		echo "    - hestia-php backend package"
		dpkg -i $withdebs/hestia-php_*.deb > /dev/null 2>&1
	fi

	if [ -z $(ls $withdebs/hestia-nginx_*.deb 2> /dev/null) ]; then
		echo "    - hestia-nginx backend package (from apt)"
		apt-get -y install hestia-nginx > /dev/null 2>&1
	else
		echo "    - hestia-nginx backend package"
		dpkg -i $withdebs/hestia-nginx_*.deb > /dev/null 2>&1
	fi
fi

# Restoring autostart policy
rm -f /usr/sbin/policy-rc.d

#----------------------------------------------------------#
#                     Configure system                     #
#----------------------------------------------------------#

echo "[ * ] Configuring system settings..."

# Enable SFTP subsystem for SSH
sftp_subsys_enabled=$(grep -iE "^#?.*subsystem.+(sftp )?sftp-server" /etc/ssh/sshd_config)
if [ -n "$sftp_subsys_enabled" ]; then
	sed -i -E "s/^#?.*Subsystem.+(sftp )?sftp-server/Subsystem sftp internal-sftp/g" /etc/ssh/sshd_config
fi

# Reduce SSH login grace time
sed -i "s/[#]LoginGraceTime [[:digit:]]m/LoginGraceTime 1m/g" /etc/ssh/sshd_config

# Disable SSH suffix broadcast
if [ -z "$(grep "^DebianBanner no" /etc/ssh/sshd_config)" ]; then
	sed -i '/^[#]Banner .*/a DebianBanner no' /etc/ssh/sshd_config
	if [ -z "$(grep "^DebianBanner no" /etc/ssh/sshd_config)" ]; then
		# If first attempt fails just add it
		echo '' >> /etc/ssh/sshd_config
		echo 'DebianBanner no' >> /etc/ssh/sshd_config
	fi
fi

# Restart SSH daemon
systemctl restart ssh

# Disable AWStats cron
rm -f /etc/cron.d/awstats

# Set directory color
if [ -z "$(grep 'LS_COLORS="$LS_COLORS:di=00;33"' /etc/profile)" ]; then
	echo 'LS_COLORS="$LS_COLORS:di=00;33"' >> /etc/profile
fi

# Register /sbin/nologin and /usr/sbin/nologin
if [ -z "$(grep ^/sbin/nologin /etc/shells)" ]; then
	echo "/sbin/nologin" >> /etc/shells
fi

if [ -z "$(grep ^/usr/sbin/nologin /etc/shells)" ]; then
	echo "/usr/sbin/nologin" >> /etc/shells
fi

# Configuring NTP
sed -i 's/#NTP=/NTP=pool.ntp.org/' /etc/systemd/timesyncd.conf
systemctl enable systemd-timesyncd
systemctl start systemd-timesyncd

# Restrict access to /proc fs
# - Prevent unpriv users from seeing each other running processes
mount -o remount,defaults,hidepid=2 /proc > /dev/null 2>&1
if [ $? -ne 0 ]; then
	echo "Info: Cannot remount /proc (LXC containers require additional perm added to host apparmor profile)"
else
	echo "@reboot root sleep 5 && mount -o remount,defaults,hidepid=2 /proc" > /etc/cron.d/hestia-proc
fi

#----------------------------------------------------------#
#                     Configure Hestia                     #
#----------------------------------------------------------#

echo "[ * ] Configuring Hestia Control Panel..."
# Installing sudo configuration
mkdir -p /etc/sudoers.d
cp -f $HESTIA_INSTALL_DIR/sudo/admin /etc/sudoers.d/
chmod 440 /etc/sudoers.d/admin

# Add Hestia global config
if [[ ! -e /etc/hestiacp/hestia.conf ]]; then
	mkdir -p /etc/hestiacp
	echo -e "# Do not edit this file, will get overwritten on next upgrade, use /etc/hestiacp/local.conf instead\n\nexport HESTIA='/usr/local/hestia'\n\n[[ -f /etc/hestiacp/local.conf ]] && source /etc/hestiacp/local.conf" > /etc/hestiacp/hestia.conf
fi

# Configuring system env
echo "export HESTIA='$HESTIA'" > /etc/profile.d/hestia.sh
echo 'PATH=$PATH:'$HESTIA'/bin' >> /etc/profile.d/hestia.sh
echo 'export PATH' >> /etc/profile.d/hestia.sh
chmod 755 /etc/profile.d/hestia.sh
source /etc/profile.d/hestia.sh

# Configuring logrotate for Hestia logs
cp -f $HESTIA_INSTALL_DIR/logrotate/hestia /etc/logrotate.d/hestia

# Create log path and symbolic link
rm -f /var/log/hestia
mkdir -p /var/log/hestia
ln -s /var/log/hestia $HESTIA/log

# Building directory tree and creating some blank files for Hestia
mkdir -p $HESTIA/conf $HESTIA/ssl $HESTIA/data/ips \
	$HESTIA/data/queue $HESTIA/data/users $HESTIA/data/firewall \
	$HESTIA/data/sessions
touch $HESTIA/data/queue/backup.pipe $HESTIA/data/queue/disk.pipe \
	$HESTIA/data/queue/webstats.pipe $HESTIA/data/queue/restart.pipe \
	$HESTIA/data/queue/traffic.pipe $HESTIA/data/queue/daily.pipe $HESTIA/log/system.log \
	$HESTIA/log/nginx-error.log $HESTIA/log/auth.log $HESTIA/log/backup.log
chmod 750 $HESTIA/conf $HESTIA/data/users $HESTIA/data/ips $HESTIA/log
chmod -R 750 $HESTIA/data/queue
chmod 660 /var/log/hestia/*
chmod 770 $HESTIA/data/sessions

# Generating Hestia configuration
rm -f $HESTIA/conf/hestia.conf > /dev/null 2>&1
touch $HESTIA/conf/hestia.conf
chmod 660 $HESTIA/conf/hestia.conf

# Write default port value to hestia.conf
# If a custom port is specified it will be set at the end of the installation process.
write_config_value "BACKEND_PORT" "8083"

# Web stack
if [ "$apache" = 'yes' ]; then
	write_config_value "WEB_SYSTEM" "apache2"
	write_config_value "WEB_RGROUPS" "www-data"
	write_config_value "WEB_PORT" "8080"
	write_config_value "WEB_SSL_PORT" "8443"
	write_config_value "WEB_SSL" "mod_ssl"
	write_config_value "PROXY_SYSTEM" "nginx"
	write_config_value "PROXY_PORT" "80"
	write_config_value "PROXY_SSL_PORT" "443"
	write_config_value "STATS_SYSTEM" "awstats"
fi
if [ "$apache" = 'no' ]; then
	write_config_value "WEB_SYSTEM" "nginx"
	write_config_value "WEB_PORT" "80"
	write_config_value "WEB_SSL_PORT" "443"
	write_config_value "WEB_SSL" "openssl"
	write_config_value "STATS_SYSTEM" "awstats"

fi

if [ "$phpfpm" = 'yes' ]; then
	write_config_value "WEB_BACKEND" "php-fpm"
fi

# Database stack
if [ "$mysql" = 'yes' ] || [ "$mysqlclassic" = 'yes' ]; then
	installed_db_types='mysql'
fi

if [ "$postgresql" = 'yes' ]; then
	installed_db_types="$installed_db_types,pgsql"
fi

if [ -n "$installed_db_types" ]; then
	db=$(echo "$installed_db_types" \
		| sed "s/,/\n/g" \
		| sort -r -u \
		| sed "/^$/d" \
		| sed ':a;N;$!ba;s/\n/,/g')
	write_config_value "DB_SYSTEM" "$db"
fi

# FTP stack
if [ "$vsftpd" = 'yes' ]; then
	write_config_value "FTP_SYSTEM" "vsftpd"
fi
if [ "$proftpd" = 'yes' ]; then
	write_config_value "FTP_SYSTEM" "proftpd"
fi

# DNS stack
if [ "$named" = 'yes' ]; then
	write_config_value "DNS_SYSTEM" "bind9"
fi

# Mail stack
if [ "$exim" = 'yes' ]; then
	write_config_value "MAIL_SYSTEM" "exim4"
	if [ "$clamd" = 'yes' ]; then
		write_config_value "ANTIVIRUS_SYSTEM" "clamav-daemon"
	fi
	if [ "$spamd" = 'yes' ]; then
		write_config_value "ANTISPAM_SYSTEM" "spamassassin"
	fi
	if [ "$dovecot" = 'yes' ]; then
		write_config_value "IMAP_SYSTEM" "dovecot"
	fi
	if [ "$sieve" = 'yes' ]; then
		write_config_value "SIEVE_SYSTEM" "yes"
	fi
fi

# Cron daemon
write_config_value "CRON_SYSTEM" "cron"

# Firewall stack
if [ "$iptables" = 'yes' ]; then
	write_config_value "FIREWALL_SYSTEM" "iptables"
fi
if [ "$iptables" = 'yes' ] && [ "$fail2ban" = 'yes' ]; then
	write_config_value "FIREWALL_EXTENSION" "fail2ban"
fi

# Disk quota
if [ "$quota" = 'yes' ]; then
	write_config_value "DISK_QUOTA" "yes"
else
	write_config_value "DISK_QUOTA" "no"
fi

# Backups
write_config_value "BACKUP_SYSTEM" "local"
write_config_value "BACKUP_GZIP" "4"
write_config_value "BACKUP_MODE" "zstd"

# Language
write_config_value "LANGUAGE" "$lang"

# Login in screen
write_config_value "LOGIN_STYLE" "default"

# Theme
write_config_value "THEME" "dark"

# Inactive session timeout
write_config_value "INACTIVE_SESSION_TIMEOUT" "60"

# Version & Release Branch
write_config_value "VERSION" "${HESTIA_INSTALL_VER}"
write_config_value "RELEASE_BRANCH" "release"

# Email notifications after upgrade
write_config_value "UPGRADE_SEND_EMAIL" "true"
write_config_value "UPGRADE_SEND_EMAIL_LOG" "false"

# Installing hosting packages
cp -rf $HESTIA_COMMON_DIR/packages $HESTIA/data/

# Update nameservers in hosting package
IFS='.' read -r -a domain_elements <<< "$servername"
if [ -n "${domain_elements[-2]}" ] && [ -n "${domain_elements[-1]}" ]; then
	serverdomain="${domain_elements[-2]}.${domain_elements[-1]}"
	sed -i s/"domain.tld"/"$serverdomain"/g $HESTIA/data/packages/*.pkg
fi

# Installing templates
cp -rf $HESTIA_INSTALL_DIR/templates $HESTIA/data/
cp -rf $HESTIA_COMMON_DIR/templates/web/ $HESTIA/data/templates
cp -rf $HESTIA_COMMON_DIR/templates/dns/ $HESTIA/data/templates

mkdir -p /var/www/html
mkdir -p /var/www/document_errors

# Install default success page
cp -rf $HESTIA_COMMON_DIR/templates/web/unassigned/index.html /var/www/html/
cp -rf $HESTIA_COMMON_DIR/templates/web/skel/document_errors/* /var/www/document_errors/

# Installing firewall rules
cp -rf $HESTIA_COMMON_DIR/firewall $HESTIA/data/

# Installing apis
cp -rf $HESTIA_COMMON_DIR/api $HESTIA/data/

# Configuring server hostname
$HESTIA/bin/v-change-sys-hostname $servername > /dev/null 2>&1

# Generating SSL certificate
echo "[ * ] Generating default self-signed SSL certificate..."
$HESTIA/bin/v-generate-ssl-cert $(hostname) '' 'US' 'California' \
	'San Francisco' 'Hestia Control Panel' 'IT' > /tmp/hst.pem

# Parsing certificate file
crt_end=$(grep -n "END CERTIFICATE-" /tmp/hst.pem | cut -f 1 -d:)
key_start=$(grep -n "BEGIN RSA" /tmp/hst.pem | cut -f 1 -d:)
key_end=$(grep -n "END RSA" /tmp/hst.pem | cut -f 1 -d:)

# Adding SSL certificate
echo "[ * ] Adding SSL certificate to Hestia Control Panel..."
cd $HESTIA/ssl
sed -n "1,${crt_end}p" /tmp/hst.pem > certificate.crt
sed -n "$key_start,${key_end}p" /tmp/hst.pem > certificate.key
chown root:mail $HESTIA/ssl/*
chmod 660 $HESTIA/ssl/*
rm /tmp/hst.pem

# Install dhparam.pem
cp -f $HESTIA_INSTALL_DIR/ssl/dhparam.pem /etc/ssl

# Deleting old admin user
if [ -n "$(grep ^admin: /etc/passwd)" ] && [ "$force" = 'yes' ]; then
	chattr -i /home/admin/conf > /dev/null 2>&1
	userdel -f admin > /dev/null 2>&1
	chattr -i /home/admin/conf > /dev/null 2>&1
	mv -f /home/admin $hst_backups/home/ > /dev/null 2>&1
	rm -f /tmp/sess_* > /dev/null 2>&1
fi
if [ -n "$(grep ^admin: /etc/group)" ] && [ "$force" = 'yes' ]; then
	groupdel admin > /dev/null 2>&1
fi

# Enable sftp jail
echo "[ * ] Enable SFTP jail..."
$HESTIA/bin/v-add-sys-sftp-jail > /dev/null 2>&1
check_result $? "can't enable sftp jail"

# Adding Hestia admin account
$HESTIA/bin/v-add-user admin $vpass $email "system" "System Administrator"
check_result $? "can't create admin user"
$HESTIA/bin/v-change-user-shell admin nologin
$HESTIA/bin/v-change-user-role admin admin
$HESTIA/bin/v-change-user-language admin $lang
$HESTIA/bin/v-change-sys-config-value 'POLICY_SYSTEM_PROTECTED_ADMIN' 'yes'

locale-gen "en_US.utf8" > /dev/null 2>&1
#----------------------------------------------------------#
#                     Configure Nginx                      #
#----------------------------------------------------------#

echo "[ * ] Configuring NGINX..."
rm -f /etc/nginx/conf.d/*.conf
cp -f $HESTIA_INSTALL_DIR/nginx/nginx.conf /etc/nginx/
cp -f $HESTIA_INSTALL_DIR/nginx/status.conf /etc/nginx/conf.d/
cp -f $HESTIA_INSTALL_DIR/nginx/agents.conf /etc/nginx/conf.d/
cp -f $HESTIA_INSTALL_DIR/nginx/phpmyadmin.inc /etc/nginx/conf.d/
cp -f $HESTIA_INSTALL_DIR/nginx/phppgadmin.inc /etc/nginx/conf.d/
cp -f $HESTIA_INSTALL_DIR/logrotate/nginx /etc/logrotate.d/
if [ "$ipv6" = 'yes' ]; then
	cp -f $HESTIA_INSTALL_DIR/nginx/nginx-ipv6.conf /etc/nginx/nginx.conf
	cp -f $HESTIA_INSTALL_DIR/nginx/status-ipv6.conf /etc/nginx/conf.d/status.conf
fi
mkdir -p /etc/nginx/conf.d/domains
mkdir -p /etc/nginx/modules-enabled
mkdir -p /var/log/nginx/domains

# Update dns servers in nginx.conf
dns_resolver=$(cat /etc/resolv.conf | grep -i '^nameserver' | cut -d ' ' -f2 | tr '\r\n' ' ' | xargs)
for ip in $dns_resolver; do
	if [[ $ip =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
	    resolver="$ip $resolver"
	fi
	if [ "$ipv6" = 'yes' ]; then
	    if [[ $ip =~ ^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$ ]]; then
		resolver="[$ip] $resolver"
	    fi
	fi
done
if [ -n "$resolver" ]; then
	if [ "$ipv6" = 'yes' ]; then
	    sed -i "s/1.0.0.1 \[2606:4700:4700::1111\] 1.0.0.1 \[2606:4700:4700::1001\]/$resolver/g" /etc/nginx/nginx.conf
	    sed -i "s/1.0.0.1 \[2606:4700:4700::1111\] 1.0.0.1 \[2606:4700:4700::1001\]/$resolver/g" /usr/local/hestia/nginx/conf/nginx.conf
	else
	    sed -i "s/1.0.0.1 1.1.1.1/$resolver/g" /etc/nginx/nginx.conf
	    sed -i "s/1.0.0.1 1.1.1.1/$resolver/g" /usr/local/hestia/nginx/conf/nginx.conf
	fi
fi

update-rc.d nginx defaults > /dev/null 2>&1
systemctl start nginx >> $LOG
check_result $? "nginx start failed"

#----------------------------------------------------------#
#                    Configure Apache                      #
#----------------------------------------------------------#

if [ "$apache" = 'yes' ]; then
	echo "[ * ] Configuring Apache Web Server..."

	mkdir -p /etc/apache2/conf.d
	mkdir -p /etc/apache2/conf.d/domains

	# Copy configuration files
	cp -f $HESTIA_INSTALL_DIR/apache2/apache2.conf /etc/apache2/
	cp -f $HESTIA_INSTALL_DIR/apache2/status.conf /etc/apache2/mods-available/hestia-status.conf
	cp -f /etc/apache2/mods-available/status.load /etc/apache2/mods-available/hestia-status.load
	cp -f $HESTIA_INSTALL_DIR/logrotate/apache2 /etc/logrotate.d/
	if [ "$ipv6" = 'yes' ]; then
	    cp -f $HESTIA_INSTALL_DIR/apache2/status-ipv6.conf /etc/apache2/mods-available/hestia-status.conf
	fi
	# Enable needed modules
	a2enmod rewrite > /dev/null 2>&1
	a2enmod suexec > /dev/null 2>&1
	a2enmod ssl > /dev/null 2>&1
	a2enmod actions > /dev/null 2>&1
	a2dismod --quiet status > /dev/null 2>&1
	a2enmod --quiet hestia-status > /dev/null 2>&1

	if [ "$phpfpm" = 'yes' ]; then
		# Disable prefork and php, enable event
		a2dismod php$fpm_v > /dev/null 2>&1
		a2dismod mpm_prefork > /dev/null 2>&1
		a2enmod mpm_event > /dev/null 2>&1
		cp -f $HESTIA_INSTALL_DIR/apache2/hestia-event.conf /etc/apache2/conf.d/
	else
		a2enmod mpm_itk > /dev/null 2>&1
	fi

	echo "# Powered by hestia" > /etc/apache2/sites-available/default
	echo "# Powered by hestia" > /etc/apache2/sites-available/default-ssl
	echo "# Powered by hestia" > /etc/apache2/ports.conf
	echo -e "/home\npublic_html/cgi-bin" > /etc/apache2/suexec/www-data
	touch /var/log/apache2/access.log /var/log/apache2/error.log
	mkdir -p /var/log/apache2/domains
	chmod a+x /var/log/apache2
	chmod 640 /var/log/apache2/access.log /var/log/apache2/error.log
	chmod 751 /var/log/apache2/domains

	# Prevent remote access to server-status page
	sed -i '/Allow from all/d' /etc/apache2/mods-available/hestia-status.conf

	update-rc.d apache2 defaults > /dev/null 2>&1
	systemctl start apache2 >> $LOG
	check_result $? "apache2 start failed"
else
	update-rc.d apache2 disable > /dev/null 2>&1
	systemctl stop apache2 > /dev/null 2>&1
fi

#----------------------------------------------------------#
#                     Configure PHP-FPM                    #
#----------------------------------------------------------#

if [ "$phpfpm" = "yes" ]; then
	if [ "$multiphp" = 'yes' ]; then
		for v in "${multiphp_v[@]}"; do
			echo "[ * ] Install PHP $v..."
			$HESTIA/bin/v-add-web-php "$v" > /dev/null 2>&1
		done
	else
		echo "[ * ] Install  PHP $fpm_v..."
		$HESTIA/bin/v-add-web-php "$fpm_v" > /dev/null 2>&1
	fi

	echo "[ * ] Configuring PHP $fpm_v..."
	# Create www.conf for webmail and php(*)admin
	cp -f $HESTIA_INSTALL_DIR/php-fpm/www.conf /etc/php/$fpm_v/fpm/pool.d/www.conf
	update-rc.d php$fpm_v-fpm defaults > /dev/null 2>&1
	systemctl start php$fpm_v-fpm >> $LOG
	check_result $? "php-fpm start failed"
	# Set default php version to $fpm_v
	update-alternatives --set php /usr/bin/php$fpm_v > /dev/null 2>&1
fi

#----------------------------------------------------------#
#                     Configure PHP                        #
#----------------------------------------------------------#

echo "[ * ] Configuring PHP..."
ZONE=$(timedatectl > /dev/null 2>&1 | grep Timezone | awk '{print $2}')
if [ -z "$ZONE" ]; then
	ZONE='UTC'
fi
for pconf in $(find /etc/php* -name php.ini); do
	sed -i "s/;date.timezone =/date.timezone = $ZONE/g" $pconf
	sed -i 's%_open_tag = Off%_open_tag = On%g' $pconf
done

# Cleanup php session files not changed in the last 7 days (60*24*7 minutes)
echo '#!/bin/sh' > /etc/cron.daily/php-session-cleanup
echo "find -O3 /home/*/tmp/ -ignore_readdir_race -depth -mindepth 1 -name 'sess_*' -type f -cmin '+10080' -delete > /dev/null 2>&1" >> /etc/cron.daily/php-session-cleanup
echo "find -O3 $HESTIA/data/sessions/ -ignore_readdir_race -depth -mindepth 1 -name 'sess_*' -type f -cmin '+10080' -delete > /dev/null 2>&1" >> /etc/cron.daily/php-session-cleanup
chmod 755 /etc/cron.daily/php-session-cleanup

#----------------------------------------------------------#
#                    Configure Vsftpd                      #
#----------------------------------------------------------#

if [ "$vsftpd" = 'yes' ]; then
	echo "[ * ] Configuring Vsftpd server..."
	cp -f $HESTIA_INSTALL_DIR/vsftpd/vsftpd.conf /etc/
	if [ "$ipv6" = 'yes' ]; then
	    cp -f $HESTIA_INSTALL_DIR/vsftpd/vsftpd-ipv6.conf /etc/vsftpd.conf
	fi
	touch /var/log/vsftpd.log
	chown root:adm /var/log/vsftpd.log
	chmod 640 /var/log/vsftpd.log
	touch /var/log/xferlog
	chown root:adm /var/log/xferlog
	chmod 640 /var/log/xferlog
	update-rc.d vsftpd defaults
	systemctl start vsftpd
	check_result $? "vsftpd start failed"

fi

#----------------------------------------------------------#
#                    Configure ProFTPD                     #
#----------------------------------------------------------#

if [ "$proftpd" = 'yes' ]; then
	echo "[ * ] Configuring ProFTPD server..."
	echo "127.0.0.1 $servername" >> /etc/hosts
	cp -f $HESTIA_INSTALL_DIR/proftpd/proftpd.conf /etc/proftpd/
	cp -f $HESTIA_INSTALL_DIR/proftpd/tls.conf /etc/proftpd/

	if [ "$release" -eq 11 ]; then
		sed -i 's|IdentLookups                  off|#IdentLookups                  off|g' /etc/proftpd/proftpd.conf
	fi

	update-rc.d proftpd defaults > /dev/null 2>&1
	systemctl start proftpd >> $LOG
	check_result $? "proftpd start failed"

	if [ "$release" -eq 11 ]; then
		unit_files="$(systemctl list-unit-files | grep proftpd)"
		if [[ "$unit_files" =~ "disabled" ]]; then
			systemctl enable proftpd
		fi
	fi
fi

#----------------------------------------------------------#
#               Configure MariaDB / MySQL                  #
#----------------------------------------------------------#

if [ "$mysql" = 'yes' ] || [ "$mysqlclassic" = 'yes' ]; then
	[ "$mysql" = 'yes' ] && mysql_type="MariaDB" || mysql_type="MySQL"
	echo "[ * ] Configuring $mysql_type database server..."
	mycnf="my-small.cnf"
	if [ $memory -gt 1200000 ]; then
		mycnf="my-medium.cnf"
	fi
	if [ $memory -gt 3900000 ]; then
		mycnf="my-large.cnf"
	fi

	if [ "$mysql_type" = 'MariaDB' ]; then
		# Run mysql_install_db
		mysql_install_db >> $LOG
	fi

	# Remove symbolic link
	rm -f /etc/mysql/my.cnf
	# Configuring MariaDB
	cp -f $HESTIA_INSTALL_DIR/mysql/$mycnf /etc/mysql/my.cnf

	# Switch MariaDB inclusions to the MySQL
	if [ "$mysql_type" = 'MySQL' ]; then
		sed -i '/query_cache_size/d' /etc/mysql/my.cnf
		sed -i 's|mariadb.conf.d|mysql.conf.d|g' /etc/mysql/my.cnf
	fi

	update-rc.d mysql defaults > /dev/null 2>&1
	systemctl start mysql >> $LOG
	check_result $? "${mysql_type,,} start failed"

	# Securing MariaDB/MySQL installation
	mpass=$(gen_pass)
	echo -e "[client]\npassword='$mpass'\n" > /root/.my.cnf
	chmod 600 /root/.my.cnf

	# Alter root password
	mysql -e "ALTER USER 'root'@'localhost' IDENTIFIED BY '$mpass'; FLUSH PRIVILEGES;"
	if [ "$mysql_type" = 'MariaDB' ]; then
		# Allow mysql access via socket for startup
		mysql -e "UPDATE mysql.global_priv SET priv=json_set(priv, '$.password_last_changed', UNIX_TIMESTAMP(), '$.plugin', 'mysql_native_password', '$.authentication_string', 'invalid', '$.auth_or', json_array(json_object(), json_object('plugin', 'unix_socket'))) WHERE User='root';"
		# Disable anonymous users
		mysql -e "DELETE FROM mysql.global_priv WHERE User='';"
	else
		mysql -e "ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY '$mpass';"
		mysql -e "DELETE FROM mysql.user WHERE User='';"
		mysql -e "DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');"
	fi
	# Drop test database
	mysql -e "DROP DATABASE IF EXISTS test"
	mysql -e "DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%'"
	# Flush privileges
	mysql -e "FLUSH PRIVILEGES;"
fi

#----------------------------------------------------------#
#                    Configure phpMyAdmin                  #
#----------------------------------------------------------#

# Source upgrade.conf with phpmyadmin versions
# shellcheck source=/usr/local/hestia/install/upgrade/upgrade.conf
source $HESTIA/install/upgrade/upgrade.conf

if [ "$mysql" = 'yes' ] || [ "$mysqlclassic" = 'yes' ]; then
	# Display upgrade information
	echo "[ * ] Installing phpMyAdmin version v$pma_v..."

	# Download latest phpmyadmin release
	wget --quiet --retry-connrefused https://files.phpmyadmin.net/phpMyAdmin/$pma_v/phpMyAdmin-$pma_v-all-languages.tar.gz

	# Unpack files
	tar xzf phpMyAdmin-$pma_v-all-languages.tar.gz

	# Create folders
	mkdir -p /usr/share/phpmyadmin
	mkdir -p /etc/phpmyadmin
	mkdir -p /etc/phpmyadmin/conf.d/
	mkdir /usr/share/phpmyadmin/tmp

	# Configuring Apache2 for PHPMYADMIN
	if [ "$apache" = 'yes' ]; then
		touch /etc/apache2/conf.d/phpmyadmin.inc
	fi

	# Overwrite old files
	cp -rf phpMyAdmin-$pma_v-all-languages/* /usr/share/phpmyadmin

	# Create copy of config file
	cp -f $HESTIA_INSTALL_DIR/phpmyadmin/config.inc.php /etc/phpmyadmin/
	mkdir -p /var/lib/phpmyadmin/tmp
	chmod 770 /var/lib/phpmyadmin/tmp
	chown root:www-data /usr/share/phpmyadmin/tmp

	# Set config and log directory
	sed -i "s|'configFile' => ROOT_PATH . 'config.inc.php',|'configFile' => '/etc/phpmyadmin/config.inc.php',|g" /usr/share/phpmyadmin/libraries/vendor_config.php

	# Create temporary folder and change permission
	chmod 770 /usr/share/phpmyadmin/tmp
	chown root:www-data /usr/share/phpmyadmin/tmp

	# Generate blow fish
	blowfish=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 32)
	sed -i "s|%blowfish_secret%|$blowfish|" /etc/phpmyadmin/config.inc.php

	# Clean Up
	rm -fr phpMyAdmin-$pma_v-all-languages
	rm -f phpMyAdmin-$pma_v-all-languages.tar.gz

	write_config_value "DB_PMA_ALIAS" "phpmyadmin"
	$HESTIA/bin/v-change-sys-db-alias 'pma' "phpmyadmin"

	# Special thanks to Pavel Galkin (https://skurudo.ru)
	# https://github.com/skurudo/phpmyadmin-fixer
	# shellcheck source=/usr/local/hestia/install/deb/phpmyadmin/pma.sh
	source $HESTIA_INSTALL_DIR/phpmyadmin/pma.sh > /dev/null 2>&1

	# limit access to /etc/phpmyadmin/
	chown -R root:www-data /etc/phpmyadmin/
	chmod -R 640 /etc/phpmyadmin/*
	chmod 750 /etc/phpmyadmin/conf.d/
fi

#----------------------------------------------------------#
#                   Configure PostgreSQL                   #
#----------------------------------------------------------#

if [ "$postgresql" = 'yes' ]; then
	echo "[ * ] Configuring PostgreSQL database server..."
	ppass=$(gen_pass)
	cp -f $HESTIA_INSTALL_DIR/postgresql/pg_hba.conf /etc/postgresql/*/main/
	systemctl restart postgresql
	sudo -iu postgres psql -c "ALTER USER postgres WITH PASSWORD '$ppass'"

	# Configuring phpPgAdmin
	if [ "$apache" = 'yes' ]; then
		cp -f $HESTIA_INSTALL_DIR/pga/phppgadmin.conf /etc/apache2/conf.d/phppgadmin.inc
	fi
	cp -f $HESTIA_INSTALL_DIR/pga/config.inc.php /etc/phppgadmin/

	write_config_value "DB_PGA_ALIAS" "phppgadmin"
	$HESTIA/bin/v-change-sys-db-alias 'pga' "phppgadmin"
fi

#----------------------------------------------------------#
#                      Configure Bind                      #
#----------------------------------------------------------#

if [ "$named" = 'yes' ]; then
	echo "[ * ] Configuring Bind DNS server..."
	cp -f $HESTIA_INSTALL_DIR/bind/named.conf /etc/bind/
	cp -f $HESTIA_INSTALL_DIR/bind/named.conf.options /etc/bind/
	chown root:bind /etc/bind/named.conf
	chown root:bind /etc/bind/named.conf.options
	chown bind:bind /var/cache/bind
	chmod 640 /etc/bind/named.conf
	chmod 640 /etc/bind/named.conf.options
	aa-complain /usr/sbin/named 2> /dev/null
	if [ "$apparmor" = 'yes' ]; then
		echo "/home/** rwm," >> /etc/apparmor.d/local/usr.sbin.named 2> /dev/null
		systemctl status apparmor > /dev/null 2>&1
		if [ $? -ne 0 ]; then
			systemctl restart apparmor
		fi
	fi
	update-rc.d bind9 defaults > /dev/null 2>&1
	systemctl start bind9
	check_result $? "bind9 start failed"

	# Workaround for OpenVZ/Virtuozzo
	if [ -e "/proc/vz/veinfo" ] && [ -e "/etc/rc.local" ]; then
		sed -i "s/^exit 0/service bind9 restart\nexit 0/" /etc/rc.local
	fi
fi

#----------------------------------------------------------#
#                      Configure Exim                      #
#----------------------------------------------------------#

if [ "$exim" = 'yes' ]; then
	echo "[ * ] Configuring Exim mail server..."
	gpasswd -a Debian-exim mail > /dev/null 2>&1
	exim_version=$(exim4 --version | head -1 | awk '{print $3}' | cut -f -2 -d .)
	if [ "$exim_version" = "4.94" ]; then
		cp -f $HESTIA_INSTALL_DIR/exim/exim4.conf.4.94.template /etc/exim4/exim4.conf.template
	else
		cp -f $HESTIA_INSTALL_DIR/exim/exim4.conf.template /etc/exim4/
	fi
	cp -f $HESTIA_INSTALL_DIR/exim/dnsbl.conf /etc/exim4/
	cp -f $HESTIA_INSTALL_DIR/exim/spam-blocks.conf /etc/exim4/
	cp -f $HESTIA_INSTALL_DIR/exim/limit.conf /etc/exim4/
	cp -f $HESTIA_INSTALL_DIR/exim/system.filter /etc/exim4/
	touch /etc/exim4/white-blocks.conf

	if [ "$spamd" = 'yes' ]; then
		sed -i "s/#SPAM/SPAM/g" /etc/exim4/exim4.conf.template
	fi
	if [ "$clamd" = 'yes' ]; then
		sed -i "s/#CLAMD/CLAMD/g" /etc/exim4/exim4.conf.template
	fi

	chmod 640 /etc/exim4/exim4.conf.template
	rm -rf /etc/exim4/domains
	mkdir -p /etc/exim4/domains

	rm -f /etc/alternatives/mta
	ln -s /usr/sbin/exim4 /etc/alternatives/mta
	update-rc.d -f sendmail remove > /dev/null 2>&1
	systemctl stop sendmail > /dev/null 2>&1
	update-rc.d -f postfix remove > /dev/null 2>&1
	systemctl stop postfix > /dev/null 2>&1
	update-rc.d exim4 defaults
	systemctl start exim4
	check_result $? "exim4 start failed"
fi

#----------------------------------------------------------#
#                     Configure Dovecot                    #
#----------------------------------------------------------#

if [ "$dovecot" = 'yes' ]; then
	echo "[ * ] Configuring Dovecot POP/IMAP mail server..."
	gpasswd -a dovecot mail > /dev/null 2>&1
	cp -rf $HESTIA_COMMON_DIR/dovecot /etc/
	cp -f $HESTIA_INSTALL_DIR/logrotate/dovecot /etc/logrotate.d/
	chown -R root:root /etc/dovecot*
	rm -f /etc/dovecot/conf.d/15-mailboxes.conf

	#Alter config for 2.2
	version=$(dovecot --version | cut -f -2 -d .)
	if [ "$version" = "2.2" ]; then
		echo "[ * ] Downgrade dovecot config to sync with 2.2 settings"
		sed -i 's|#ssl_dh_parameters_length = 4096|ssl_dh_parameters_length = 4096|g' /etc/dovecot/conf.d/10-ssl.conf
		sed -i 's|ssl_dh = </etc/ssl/dhparam.pem|#ssl_dh = </etc/ssl/dhparam.pem|g' /etc/dovecot/conf.d/10-ssl.conf
		sed -i 's|ssl_min_protocol = TLSv1.2|ssl_protocols = !SSLv3 !TLSv1 !TLSv1.1|g' /etc/dovecot/conf.d/10-ssl.conf
	fi

	update-rc.d dovecot defaults
	systemctl start dovecot
	check_result $? "dovecot start failed"
fi

#----------------------------------------------------------#
#                     Configure ClamAV                     #
#----------------------------------------------------------#

if [ "$clamd" = 'yes' ]; then
	gpasswd -a clamav mail > /dev/null 2>&1
	gpasswd -a clamav Debian-exim > /dev/null 2>&1
	cp -f $HESTIA_INSTALL_DIR/clamav/clamd.conf /etc/clamav/
	update-rc.d clamav-daemon defaults
	if [ ! -d "/run/clamav" ]; then
		mkdir /run/clamav
	fi
	chown -R clamav:clamav /run/clamav
	if [ -e "/lib/systemd/system/clamav-daemon.service" ]; then
		exec_pre1='ExecStartPre=-/bin/mkdir -p /run/clamav'
		exec_pre2='ExecStartPre=-/bin/chown -R clamav:clamav /run/clamav'
		sed -i "s|\[Service\]/|[Service]\n$exec_pre1\n$exec_pre2|g" \
			/lib/systemd/system/clamav-daemon.service
		systemctl daemon-reload
	fi
	echo -ne "[ * ] Installing ClamAV anti-virus definitions... "
	/usr/bin/freshclam >> $LOG &
	BACK_PID=$!
	spin_i=1
	while kill -0 $BACK_PID > /dev/null 2>&1; do
		printf "\b${spinner:spin_i++%${#spinner}:1}"
		sleep 0.5
	done
	echo
	systemctl start clamav-daemon
	check_result $? "clamav-daemon start failed"
fi

#----------------------------------------------------------#
#                  Configure SpamAssassin                  #
#----------------------------------------------------------#

if [ "$spamd" = 'yes' ]; then
	echo "[ * ] Configuring SpamAssassin..."
	update-rc.d spamassassin defaults > /dev/null 2>&1
	sed -i "s/ENABLED=0/ENABLED=1/" /etc/default/spamassassin
	systemctl start spamassassin >> $LOG
	check_result $? "spamassassin start failed"
	unit_files="$(systemctl list-unit-files | grep spamassassin)"
	if [[ "$unit_files" =~ "disabled" ]]; then
		systemctl enable spamassassin > /dev/null 2>&1
	fi
	sed -i "s/#CRON=1/CRON=1/" /etc/default/spamassassin
fi

#----------------------------------------------------------#
#                    Configure Fail2Ban                    #
#----------------------------------------------------------#

if [ "$fail2ban" = 'yes' ]; then
	echo "[ * ] Configuring fail2ban access monitor..."
	cp -rf $HESTIA_INSTALL_DIR/fail2ban /etc/
	if [ "$dovecot" = 'no' ]; then
		fline=$(cat /etc/fail2ban/jail.local | grep -n dovecot-iptables -A 2)
		fline=$(echo "$fline" | grep enabled | tail -n1 | cut -f 1 -d -)
		sed -i "${fline}s/true/false/" /etc/fail2ban/jail.local
	fi
	if [ "$exim" = 'no' ]; then
		fline=$(cat /etc/fail2ban/jail.local | grep -n exim-iptables -A 2)
		fline=$(echo "$fline" | grep enabled | tail -n1 | cut -f 1 -d -)
		sed -i "${fline}s/true/false/" /etc/fail2ban/jail.local
	fi
	if [ "$vsftpd" = 'yes' ]; then
		#Create vsftpd Log File
		if [ ! -f "/var/log/vsftpd.log" ]; then
			touch /var/log/vsftpd.log
		fi
		fline=$(cat /etc/fail2ban/jail.local | grep -n vsftpd-iptables -A 2)
		fline=$(echo "$fline" | grep enabled | tail -n1 | cut -f 1 -d -)
		sed -i "${fline}s/false/true/" /etc/fail2ban/jail.local
	fi
	if [ ! -e /var/log/auth.log ]; then
		# Debian workaround: auth logging was moved to systemd
		touch /var/log/auth.log
		chmod 640 /var/log/auth.log
		chown root:adm /var/log/auth.log
	fi
	if [ -f /etc/fail2ban/jail.d/defaults-debian.conf ]; then
		rm -f /etc/fail2ban/jail.d/defaults-debian.conf
	fi
	update-rc.d fail2ban defaults
	systemctl start fail2ban
	check_result $? "fail2ban start failed"
fi

# Configuring MariaDB/MySQL host
if [ "$mysql" = 'yes' ] || [ "$mysqlclassic" = 'yes' ]; then
	$HESTIA/bin/v-add-database-host mysql localhost root $mpass
fi

# Configuring PostgreSQL host
if [ "$postgresql" = 'yes' ]; then
	$HESTIA/bin/v-add-database-host pgsql localhost postgres $ppass
fi

#----------------------------------------------------------#
#                       Install Roundcube                  #
#----------------------------------------------------------#
# Min requirements Dovecot + Exim + Mysql
if ([ "$mysql" == 'yes' ] || [ "$mysqlclassic" == 'yes' ]) && [ "$dovecot" == "yes" ]; then
	echo "[ * ] Install Roundcube..."
	$HESTIA/bin/v-add-sys-roundcube
	write_config_value "WEBMAIL_ALIAS" "webmail"
else
	write_config_value "WEBMAIL_ALIAS" ""
	write_config_value "WEBMAIL_SYSTEM" ""
fi

#----------------------------------------------------------#
#                     Install Sieve                        #
#----------------------------------------------------------#
# Min requirements Dovecot + Exim + Mysql + Roundcube
if [ "$sieve" = 'yes' ]; then
	# Folder paths
	RC_INSTALL_DIR="/var/lib/roundcube"
	RC_CONFIG_DIR="/etc/roundcube"

	echo "[ * ] Install Sieve..."

	# dovecot.conf install
	sed -i "s/namespace/service stats \{\n  unix_listener stats-writer \{\n    group = mail\n    mode = 0660\n    user = dovecot\n  \}\n\}\n\nnamespace/g" /etc/dovecot/dovecot.conf

	# dovecot conf files
	#  10-master.conf
	sed -i -E -z "s/  }\n  user = dovecot\n}/  \}\n  unix_listener auth-master \{\n    group = mail\n    mode = 0660\n    user = dovecot\n  \}\n  user = dovecot\n\}/g" /etc/dovecot/conf.d/10-master.conf
	#  15-lda.conf
	sed -i "s/\#mail_plugins = \\\$mail_plugins/mail_plugins = \$mail_plugins quota sieve\n  auth_socket_path = \/var\/run\/dovecot\/auth-master/g" /etc/dovecot/conf.d/15-lda.conf
	#  20-imap.conf
	sed -i "s/mail_plugins = quota imap_quota/mail_plugins = quota imap_quota imap_sieve/g" /etc/dovecot/conf.d/20-imap.conf

	# replace dovecot-sieve config files
	cp -f $HESTIA_COMMON_DIR/dovecot/sieve/* /etc/dovecot/conf.d

	echo -e "require [\"fileinto\"];\n# rule:[SPAM]\nif header :contains \"X-Spam-Flag\" \"YES\" {\n    fileinto \"INBOX.Spam\";\n}\n" > /etc/dovecot/sieve/default

	# exim4 install
	sed -i "s/\stransport = local_delivery/ transport = dovecot_virtual_delivery/" /etc/exim4/exim4.conf.template
	sed -i "s/address_pipe:/dovecot_virtual_delivery:\n  driver = pipe\n  command = \/usr\/lib\/dovecot\/dovecot-lda -e -d \$local_part@\$domain -f \$sender_address -a \$original_local_part@\$original_domain\n  delivery_date_add\n  envelope_to_add\n  return_path_add\n  log_output = true\n  log_defer_output = true\n  user = \${extract{2}{:}{\${lookup{\$local_part}lsearch{\/etc\/exim4\/domains\/\${lookup{\$domain}dsearch{\/etc\/exim4\/domains\/}}\/passwd}}}}\n group = mail\n  return_output\n\naddress_pipe:/g" /etc/exim4/exim4.conf.template

	# Permission changes
	chown -R dovecot:mail /var/log/dovecot.log
	chmod 660 /var/log/dovecot.log

	if [ -d "/var/lib/roundcube" ]; then
		# Modify Roundcube config
		mkdir -p $RC_CONFIG_DIR/plugins/managesieve
		cp -f $HESTIA_COMMON_DIR/roundcube/plugins/config_managesieve.inc.php $RC_CONFIG_DIR/plugins/managesieve/config.inc.php
		ln -s $RC_CONFIG_DIR/plugins/managesieve/config.inc.php $RC_INSTALL_DIR/plugins/managesieve/config.inc.php
		chown -R root:www-data $RC_CONFIG_DIR/
		chmod 751 -R $RC_CONFIG_DIR
		chmod 644 $RC_CONFIG_DIR/*.php
		chmod 644 $RC_CONFIG_DIR/plugins/managesieve/config.inc.php
		sed -i "s/'archive'/'archive', 'managesieve'/g" $RC_CONFIG_DIR/config.inc.php
	fi
	# Restart Dovecot and exim4
	systemctl restart dovecot > /dev/null 2>&1
	systemctl restart exim4 > /dev/null 2>&1
fi

#----------------------------------------------------------#
#                  Configure File Manager                  #
#----------------------------------------------------------#

echo "[ * ] Configuring File Manager..."
$HESTIA/bin/v-add-sys-filemanager quiet

#----------------------------------------------------------#
#                  Configure PHPMailer                     #
#----------------------------------------------------------#

echo "[ * ] Configuring PHP dependencies..."
$HESTIA/bin/v-add-sys-dependencies quiet

#----------------------------------------------------------#
#                       Configure API                      #
#----------------------------------------------------------#

if [ "$api" = "yes" ]; then
	# keep legacy api enabled until transition is complete
	write_config_value "API" "yes"
	write_config_value "API_SYSTEM" "1"
	write_config_value "API_ALLOWED_IP" ""
else
	write_config_value "API" "no"
	write_config_value "API_SYSTEM" "0"
	write_config_value "API_ALLOWED_IP" ""
	$HESTIA/bin/v-change-sys-api disable
fi

#----------------------------------------------------------#
#                   Configure IP                           #
#----------------------------------------------------------#

# Configuring system IPs
echo "[ * ] Configuring System IP..."
$HESTIA/bin/v-update-sys-ip > /dev/null 2>&1

# Get main IP
ip=$(ip addr | grep 'inet ' | grep global | head -n1 | awk '{print $2}' | cut -f1 -d/)
ipv6=$(ip addr|grep 'inet6 '|grep global|head -n1|awk '{print $2}'|cut -f1 -d/)
local_ip=$ip
local_ipv6=$ipv6

# Configuring firewall
if [ "$iptables" = 'yes' ]; then
	$HESTIA/bin/v-update-firewall
fi

# Get public IP
pub_ip=$(curl --ipv4 -s https://ip.hestiacp.com/)
pub_ipv6=$(curl --ipv6 -s https://ip.hestiacp.com/)

if [ -n "$pub_ip" ] && [ "$pub_ip" != "$ip" ]; then
	$HESTIA/bin/v-change-sys-ip-nat $ip $pub_ip > /dev/null 2>&1
	ip=$pub_ip
fi

# Configuring libapache2-mod-remoteip
if [ "$apache" = 'yes' ] && [ "$nginx" = 'yes' ]; then
	cd /etc/apache2/mods-available
	echo "<IfModule mod_remoteip.c>" > remoteip.conf
	echo "  RemoteIPHeader X-Real-IP" >> remoteip.conf
	if [ "$local_ip" != "127.0.0.1" ] && [ "$pub_ip" != "127.0.0.1" ]; then
		echo "  RemoteIPInternalProxy 127.0.0.1" >> remoteip.conf
	fi
	if [ -n "$local_ip" ] && [ "$local_ip" != "$pub_ip" ]; then
		echo "  RemoteIPInternalProxy $local_ip" >> remoteip.conf
	fi
	if [ -n "$pub_ip" ]; then
		echo "  RemoteIPInternalProxy $pub_ip" >> remoteip.conf
	fi
	echo "</IfModule>" >> remoteip.conf
	sed -i "s/LogFormat \"%h/LogFormat \"%a/g" /etc/apache2/apache2.conf
	a2enmod remoteip >> $LOG
	systemctl restart apache2
fi

# Adding default domain
$HESTIA/bin/v-add-web-domain admin $servername $ip
check_result $? "can't create $servername domain"

# Adding cron jobs
export SCHEDULED_RESTART="yes"
command="sudo $HESTIA/bin/v-update-sys-queue restart"
$HESTIA/bin/v-add-cron-job 'admin' '*/2' '*' '*' '*' '*' "$command"
systemctl restart cron

command="sudo $HESTIA/bin/v-update-sys-queue daily"
$HESTIA/bin/v-add-cron-job 'admin' '10' '00' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-update-sys-queue disk"
$HESTIA/bin/v-add-cron-job 'admin' '15' '02' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-update-sys-queue traffic"
$HESTIA/bin/v-add-cron-job 'admin' '10' '00' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-update-sys-queue webstats"
$HESTIA/bin/v-add-cron-job 'admin' '30' '03' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-update-sys-queue backup"
$HESTIA/bin/v-add-cron-job 'admin' '*/5' '*' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-backup-users"
$HESTIA/bin/v-add-cron-job 'admin' '10' '05' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-update-user-stats"
$HESTIA/bin/v-add-cron-job 'admin' '20' '00' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-update-sys-rrd"
$HESTIA/bin/v-add-cron-job 'admin' '*/5' '*' '*' '*' '*' "$command"
command="sudo $HESTIA/bin/v-update-letsencrypt-ssl"
min=$(gen_pass '012345' '2')
hour=$(gen_pass '1234567' '1')
$HESTIA/bin/v-add-cron-job 'admin' "$min" "$hour" '*' '*' '*' "$command"

# Enable automatic updates
$HESTIA/bin/v-add-cron-hestia-autoupdate apt

# Building initital rrd images
$HESTIA/bin/v-update-sys-rrd

# Enabling file system quota
if [ "$quota" = 'yes' ]; then
	$HESTIA/bin/v-add-sys-quota
fi

# Set backend port
$HESTIA/bin/v-change-sys-port $port > /dev/null 2>&1

# Create default configuration files
$HESTIA/bin/v-update-sys-defaults

# Update remaining packages since repositories have changed
echo -ne "[ * ] Installing remaining software updates..."
apt-get -qq update
apt-get -y upgrade >> $LOG &
BACK_PID=$!
echo

# Starting Hestia service
update-rc.d hestia defaults
systemctl start hestia
check_result $? "hestia start failed"
chown admin:admin $HESTIA/data/sessions

# Create backup folder and set correct permission
mkdir -p /backup/
chmod 755 /backup/

# create cronjob to generate ssl
echo "@reboot root sleep 10 && rm /etc/cron.d/hestia-ssl && PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:' && /usr/local/hestia/bin/v-add-letsencrypt-host" > /etc/cron.d/hestia-ssl

#----------------------------------------------------------#
#              Set hestia.conf default values              #
#----------------------------------------------------------#

echo "[ * ] Updating configuration files..."
write_config_value "PHPMYADMIN_KEY" ""
write_config_value "POLICY_USER_VIEW_SUSPENDED" "no"
write_config_value "POLICY_USER_VIEW_LOGS" "yes"
write_config_value "POLICY_USER_EDIT_WEB_TEMPLATES" "true"
write_config_value "POLICY_USER_EDIT_DNS_TEMPLATES" "yes"
write_config_value "POLICY_USER_EDIT_DETAILS" "yes"
write_config_value "POLICY_USER_DELETE_LOGS" "yes"
write_config_value "POLICY_USER_CHANGE_THEME" "yes"
write_config_value "POLICY_SYSTEM_PROTECTED_ADMIN" "no"
write_config_value "POLICY_SYSTEM_PASSWORD_RESET" "yes"
write_config_value "POLICY_SYSTEM_HIDE_SERVICES" "yes"
write_config_value "POLICY_SYSTEM_ENABLE_BACON" "no"
write_config_value "PLUGIN_APP_INSTALLER" "true"
write_config_value "DEBUG_MODE" "no"
write_config_value "ENFORCE_SUBDOMAIN_OWNERSHIP" "yes"
write_config_value "USE_SERVER_SMTP" "false"
write_config_value "SERVER_SMTP_PORT" ""
write_config_value "SERVER_SMTP_HOST" ""
write_config_value "SERVER_SMTP_SECURITY" ""
write_config_value "SERVER_SMTP_USER" ""
write_config_value "SERVER_SMTP_PASSWD" ""
write_config_value "SERVER_SMTP_ADDR" ""
write_config_value "POLICY_CSRF_STRICTNESS" "1"

# Add /usr/local/hestia/bin/ to path variable
echo 'if [ "${PATH#*/usr/local/hestia/bin*}" = "$PATH" ]; then
    . /etc/profile.d/hestia.sh
fi' >> /root/.bashrc

#----------------------------------------------------------#
#                   Hestia Access Info                     #
#----------------------------------------------------------#

# Comparing hostname and IP
host_ip=$(host $servername | head -n 1 | awk '{print $NF}')
if [ "$host_ip" = "$ip" ]; then
	ip="$servername"
fi

echo -e "\n"
echo "===================================================================="
echo -e "\n"

# Sending notification to admin email
echo -e "Congratulations!

You have successfully installed Hestia Control Panel on your server.

Ready to get started? Log in using the following credentials:

    Admin URL:  https://$ip:$port
    Username:   admin
    Password:   $displaypass

Thank you for choosing Hestia Control Panel to power your full stack web server,
we hope that you enjoy using it as much as we do!

Please feel free to contact us at any time if you have any questions,
or if you encounter any bugs or problems:

Documentation:  https://docs.hestiacp.com/
Forum:          https://forum.hestiacp.com/
Discord:        https://discord.gg/nXRUZch
GitHub:         https://www.github.com/hestiacp/hestiacp

Note: Automatic updates are enabled by default. If you would like to disable them,
please log in and navigate to Server > Updates to turn them off.

Help support the Hestia Control Panel project by donating via PayPal:
https://www.hestiacp.com/donate

--
Sincerely yours,
The Hestia Control Panel development team

Made with love & pride by the open-source community around the world.
" > $tmpfile

send_mail="$HESTIA/web/inc/mail-wrapper.php"
cat $tmpfile | $send_mail -s "Hestia Control Panel" $email

# Congrats
echo
cat $tmpfile
rm -f $tmpfile

# Add welcome message to notification panel
$HESTIA/bin/v-add-user-notification admin 'Welcome to Hestia Control Panel!' '<br>You are now ready to begin <a href="/add/user/">adding user accounts</a> and <a href="/add/web/">domains</a>. For help and assistance, view the <a href="https://docs.hestiacp.com/" target="_new">documentation</a> or visit our <a href="https://forum.hestiacp.com/" target="_new">user forum</a>.<br><br>Please report any bugs or issues via <a href="https://github.com/hestiacp/hestiacp/issues" target="_new"><i class="fab fa-github"></i> GitHub</a>.<br><br><b>Have a wonderful day!</b><br><br><i class="fas fa-heart icon-red"></i> The Hestia Control Panel development team'

# Clean-up
# Sort final configuration file
sort_config_file

if [ "$interactive" = 'yes' ]; then
	echo "[ ! ] IMPORTANT: The system will now reboot to complete the installation process."
	read -n 1 -s -r -p "Press any key to continue"
	reboot
else
	echo "[ ! ] IMPORTANT: You must restart the system before continuing!"
fi
# EOF