hst-install-debian.sh

#!/bin/bash

# ======================================================== #
#
# Hestia Control Panel Installer for Debian
# https://www.hestiacp.com/
#
# Currently Supported Versions:
# Debian 9, 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="$(uname -m)"
release=$(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"
VERBOSE='no'

# Define software versions
HESTIA_INSTALL_VER='1.5.5'
# Dependencies
pma_v='5.1.2'
rc_v="1.5.2"
multiphp_v=("5.6" "7.0" "7.1" "7.2" "7.3" "7.4" "8.0" "8.1")
fpm_v="8.0"
mariadb_v="10.6"

if [ "$release" -eq 9 ]; then
    software="nginx apache2 apache2-utils apache2-suexec-custom
        libapache2-mod-fcgid libapache2-mod-php$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 awstats
        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 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
        postgresql postgresql-contrib phppgadmin mc flex whois rssh git idn unzip zip
        sudo bc ftp lsof rrdtool quota e2fslibs bsdutils e2fsprogs curl
        imagemagick fail2ban dnsutils bsdmainutils cron hestia=${HESTIA_INSTALL_VER} hestia-nginx
        hestia-php expect libmail-dkim-perl unrar-free vim-common acl sysstat
        rsyslog openssh-server setpriv ipset libapache2-mod-ruid2 zstd lsb-release"
elif [ "$release" -eq 10 ] || [ "$release" -eq 11 ]; then
    software="nginx apache2 apache2-utils apache2-suexec-custom
        apache2-suexec-pristine libapache2-mod-fcgid libapache2-mod-php$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 awstats 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 postgresql
        postgresql-contrib phppgadmin mc flex whois git idn 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"
fi

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
  -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
  -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 demo@hestiacp.com -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() {
    head /dev/urandom | tr -dc A-Za-z0-9 | head -c 16
}

# 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 cs da de el en es fa fi fr he hr hu hy 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 () {
    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="${args}-m " ;;
        --postgresql)           args="${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 " ;;
        --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:g:d:x:z:Z:c:t:i:b:r:o:q:l:y: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
        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=$OPTARG ;;       # Interactive install
        s) servername=$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 '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 '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

# 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 [ "$mysql" = 'yes' ]; then
    echo '   - MariaDB Database Server'
fi
if [ "$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

    # Asking for contact email
    if [ -z "$email" ]; then
        while validate_email; do
        echo -e "\nPlease use a valid emailadress (ex. info@domain.tld)."
        read -p 'Please enter admin email address: ' email
        done
    else
      if validate_email; then
      echo "Please use a valid emailadress (ex. info@domain.tld)."
      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
fi

# Generating admin password if it wasn't set
if [ -z "$vpass" ]; then
    vpass=$(gen_pass)
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
fi

if [[ -z $(grep -i "$servername" /etc/hosts) ]]; then
    echo "127.0.0.1 $servername" >> /etc/hosts
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 /root/.gnupg/
chmod 600 /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://mirror.mva-n.net/mariadb/repo/$mariadb_v/$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 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 "$software" | sed -e "s/mariadb-common//")
    software=$(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 $software > /dev/null 2>&1 &
BACK_PID=$!

# 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

# Setup rssh
if [ "$release" -eq 9 ]; then
    if [ -z "$(grep /usr/bin/rssh /etc/shells)" ]; then
        echo /usr/bin/rssh >> /etc/shells
    fi
    sed -i 's/#allowscp/allowscp/' /etc/rssh.conf
    sed -i 's/#allowsftp/allowsftp/' /etc/rssh.conf
    sed -i 's/#allowrsync/allowrsync/' /etc/rssh.conf
    chmod 755 /usr/bin/rssh
fi

# 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 [ "$release" -ge 9 ] || [ "$multiphp" = 'yes' ]; then
    if [ "$phpfpm" = 'yes' ]; then
        write_config_value "WEB_BACKEND" "php-fpm"
    fi
else
    if [ "$phpfpm" = 'yes' ]; then
        write_config_value "WEB_BACKEND" "php5-fpm"
    fi
fi

# Database stack
if [ "$mysql" = '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_INSTALL_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/

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

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

# Installing firewall rules
cp -rf $HESTIA_INSTALL_DIR/firewall $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"

# Switch to sha512 for deb11.
if [ "$release" -eq 11 ]; then
    # Switching to sha512
    sed -i "s/ yescrypt/ sha512/g" /etc/pam.d/common-password
fi

# 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/
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 $resolver"
    fi
done
if [ -n "$resolver" ]; then
    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

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/

    # 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 $HESTIA_INSTALL_DIR/apache2/hestia-event.conf /etc/apache2/conf.d/
    else
        if [ "$release" -eq 10 ] || [ "$release" -eq 11 ]; then
            a2enmod mpm_itk > /dev/null 2>&1
        else
            a2enmod ruid2 > /dev/null 2>&1
        fi
    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 [ "$multiphp" = 'yes' ] ; then
    for v in "${multiphp_v[@]}"; do
        echo "[ * ] Install PHP $v..."
        $HESTIA/bin/v-add-web-php "$v" > /dev/null 2>&1
    done
fi

if [ "$phpfpm" = 'yes' ]; then
    echo "[ * ] Configuring PHP $fpm_v..."
    $HESTIA/bin/v-add-web-php "$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/
    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                       #
#----------------------------------------------------------#

if [ "$mysql" = 'yes' ]; then
    echo "[ * ] Configuring MariaDB 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

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

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

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

    # Clear MariaDB Test Users and Databases
    mysql -e "DELETE FROM mysql.user WHERE User=''"
    mysql -e "DROP DATABASE test" > /dev/null 2>&1
    mysql -e "DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%'"
    mysql -e "DELETE FROM mysql.user WHERE user='';"
    mysql -e "DELETE FROM mysql.user WHERE password='' AND authentication_string='';"
fi


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

if [ "$mysql" = 'yes' ]; then
    # Display upgrade information
    echo "[ * ] Installing phpMyAdmin version v$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|define('CONFIG_DIR', ROOT_PATH);|define('CONFIG_DIR', '/etc/phpmyadmin/');|" /usr/share/phpmyadmin/libraries/vendor_config.php
    sed -i "s|define('TEMP_DIR', ROOT_PATH . 'tmp/');|define('TEMP_DIR', '/var/lib/phpmyadmin/tmp/');|" /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.conf
    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/
    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_INSTALL_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 = TLSv1.1|ssl_protocols = !SSLv3 !TLSv1|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 "/var/run/clamav" ]; then
        mkdir /var/run/clamav
    fi
    chown -R clamav:clamav /var/run/clamav
    if [ -e "/lib/systemd/system/clamav-daemon.service" ]; then
        exec_pre1='ExecStartPre=-/bin/mkdir -p /var/run/clamav'
        exec_pre2='ExecStartPre=-/bin/chown -R clamav:clamav /var/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
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

#----------------------------------------------------------#
#                       Install Roundcube                  #
#----------------------------------------------------------#

echo "[ * ] Install Roundcube..."
# Min requirements Dovecot + Exim + Mysql

if [ "$mysql" == 'yes' ] && [ "$dovecot" == "yes" ]; then
    $HESTIA/bin/v-add-sys-roundcube 
    write_config_value "WEBMAIL_ALIAS" "webmail"
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_INSTALL_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
    
    
    # Modify Roundcube install
    mkdir -p $RC_CONFIG_DIR/plugins/managesieve
    
    cp -f $HESTIA_INSTALL_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
    
    # Permission changes
    chown -R dovecot:mail /var/log/dovecot.log
    chmod 660 /var/log/dovecot.log
    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
    
    # Restart Dovecot and exim4
    systemctl restart dovecot > /dev/null 2>&1
    systemctl restart exim4 > /dev/null 2>&1
fi

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

if [ "$api" = "yes" ]; then
    write_config_value "API" "yes"
    write_config_value "API_ALLOWED_IP" ""
else
    $HESTIA/bin/v-change-sys-api disable
fi

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

# Roundcube permissions fix
if [ "$exim" = 'yes' ] && [ "$mysql" = 'yes' ]; then
    if [ ! -d "/var/log/roundcube" ]; then
        mkdir /var/log/roundcube
    fi
    chown admin:admin /var/log/roundcube
fi

# 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 $2}'|cut -f1 -d/)
local_ip=$ip

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

# Get public IP
pub_ip=$(curl --ipv4 -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

# Configuring MariaDB host
if [ "$mysql" = '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

# Adding default domain
$HESTIA/bin/v-add-web-domain admin $servername
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"

# 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

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

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

#----------------------------------------------------------#
#              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"

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

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

#----------------------------------------------------------#
#                   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:   $vpass

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 status-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."
    echo -n "                 Press any key to continue!"
    read reboot
    reboot
else
    echo "[ ! ] IMPORTANT: You must restart the system before continuing!"
fi
# EOF