WPIQ/install

#!/usr/bin/env bash
# -------------------------------------------------------------------------
# WordOps install and update script
# -------------------------------------------------------------------------
# Website:       https://wordops.net
# GitHub:        https://github.com/WordOps/WordOps
# Copyright (c) 2019 - WordOps
# This script is licensed under M.I.T
# -------------------------------------------------------------------------
# wget -qO wo wops.cc && sudo bash wo
# -------------------------------------------------------------------------
# Version 3.9.9.3 - 2019-10-11
# -------------------------------------------------------------------------

# CONTENTS
# ---
# 1. VARIABLES AND DECLARATIONS
# 2. PREPARE FOR INSTALLATION
# 3. INSTALLATION
# 4.

###
# 1 - Set the CLI output colors
###

TPUT_RESET=$(tput sgr0)
TPUT_FAIL=$(tput setaf 1)
TPUT_INFO=$(tput setaf 7)
TPUT_ECHO=$(tput setaf 4)

wo_lib_echo() {

    echo "${TPUT_ECHO}${*}${TPUT_RESET}"
}

wo_lib_echo_info() {

    echo "${TPUT_INFO}${*}${TPUT_RESET}"
}

wo_lib_echo_fail() {

    echo "${TPUT_FAIL}${*}${TPUT_RESET}"
}

###
# 1 - Capture errors
###

wo_lib_error() {
    echo "[ $(date) ] ${TPUT_FAIL}${*}${TPUT_RESET}"
    exit "$2"
}

###
# 1 - script argument parsing
###

while [ "$#" -gt 0 ]; do
    case "$1" in
    -b | --branch)
        wo_branch="$2"
        shift
        ;;
    --force)
        wo_force_install="y"
        ;;
    --travis)
        wo_travis="y"
        wo_force_install="y"
        ;;
    -s | --silent)
        wo_force_install="y"
        ;;
    --purge | --uninstall)
        wo_purge="y"
        ;;
    *) # positional args
        ;;
    esac
    shift
done

###
# 1 - Check whether the installation is called with elevated rights
###
if [[ $EUID -ne 0 ]]; then
    wo_lib_echo_fail "Sudo privilege required..."
    wo_lib_echo_fail "Use: wget -qO wo wops.cc && sudo bash wo  "
    exit 100
fi

export DEBIAN_FRONTEND=noninteractive
unset LANG
export LANG='en_US.UTF-8'
export LC_ALL='C.UTF-8'

###
# 1- Main functions
###

# check if a command exist
command_exists() {
    command -v "$@" > /dev/null 2>&1
}

# run functions and exit on failure
_run() {
    if [ -n "$2" ]; then
        wo_lib_echo "$2"
    fi
    if ! { "$1" >> "$wo_install_log" 2>&1; }; then
        exit 1
    fi

}

###
# 1- Update the apt sewers with fresh info
###

if [ -z "$wo_travis" ]; then
    if ! {
        apt-get update --allow-releaseinfo-change -qq > /dev/null 2>&1
    }; then
        apt-get update -qq > /dev/null 2>&1
    fi
    if ! command_exists curl; then
        apt-get -y install curl -qq > /dev/null 2>&1
    fi
fi

if [ -f ./setup.py ]; then
    readonly wo_version_new=$(grep "version='" setup.py | awk -F "'" '{print$2}' 2>&1)
else
    readonly wo_version_new=$(curl -sL https://wops.cc/setup.py 2>&1 | grep "version='" | awk -F "'" '{print$2}' 2>&1)
fi

echo ""
wo_lib_echo "Welcome to WordOps install/update script v${wo_version_new}"
echo ""

###
# 1- Check whether lsb_release is installed, and if not, install it
###

if ! command_exists lsb_release; then
    apt-get install lsb-release -qq
fi

###
# 1 - Define variables for later use
###
if [ -z "$wo_branch" ]; then
    wo_branch=master
fi
readonly wo_log_dir=/var/log/wo/
readonly wo_backup_dir=/var/lib/wo-backup/
readonly wo_tmp_dir=/var/lib/wo/tmp
readonly wo_install_log=/var/log/wo/install.log
readonly wo_linux_distro=$(lsb_release -is)
readonly wo_distro_version=$(lsb_release -sc)
readonly TIME_FORMAT='%d-%b-%Y-%H%M%S'
readonly TIME=$(date +"$TIME_FORMAT")
readonly NGINX_BACKUP_FILE="/var/lib/wo-backup/nginx-backup.$TIME.tar.gz"
readonly EE_BACKUP_FILE="/var/lib/wo-backup/ee-backup.$TIME.tar.gz"
readonly WO_BACKUP_FILE="/var/lib/wo-backup/wo-backup.$TIME.tar.gz"
readonly wo_lxc=$(grep "container=lxc" /proc/1/environ)
readonly wo_wsl=$(grep "wsl" /proc/1/environ)
WO_ARCH="$(uname -m)"

if [ -x /usr/local/bin/ee ]; then
    ee_migration=1
elif [ -x /usr/local/bin/wo ]; then
    wo_upgrade=1
fi
###
# 1 - Checking linux distro
###
if [ -z "$wo_force_install" ]; then
    if [ "$wo_linux_distro" != "Ubuntu" ] && [ "$wo_linux_distro" != "Debian" ] && [ "$wo_linux_distro" != "Raspbian" ]; then
        wo_lib_echo_fail "WordOps (wo) only supports Ubuntu, Debian & Raspbian at the moment."
        wo_lib_echo_fail "If you are feeling adventurous, you are free to fork WordOps to support"
        wo_lib_echo_fail "other Linux distributions and perhaps even Unix deratives."
        exit 100
    else
        check_wo_linux_distro=$(lsb_release -sc | grep -E "xenial|bionic|disco|jessie|stretch|buster")
        if [ -z "$check_wo_linux_distro" ]; then
            wo_lib_echo_fail "WordOps (wo) only supports Ubuntu 16.04/18.04/19.04 LTS, Debian 9.x/10.x and Raspbian 9.x/10x"
            exit 100
        fi
    fi
fi

###
# 1 - To prevent errors or unexpected behaviour, create the log and ACL it
###
if [ ! -d "$wo_log_dir" ] || [ ! -d "$wo_backup_dir" ] || [ ! -d "$wo_tmp_dir" ]; then

    mkdir -p "$wo_backup_dir" "$wo_log_dir" "$wo_tmp_dir" || wo_lib_error "Whoops - seems we are unable to create the log directory $wo_log_dir, exit status " $?

    # create wordops log files
    touch /var/log/wo/{wordops.log,install.log}

    chmod -R 700 "$wo_log_dir" "$wo_backup_dir" "$wo_tmp_dir" || wo_lib_error "Whoops, there was an error setting the permissions on the WordOps log folder, exit status " $?
fi

###
# 2 - Setup the dependencies for installation
####

wo_dist_upgrade() {
    # perform server packages upgrade
    apt-get dist-upgrade --option=Dpkg::options::=--force-confmiss --option=Dpkg::options::=--force-confold --option=Dpkg::options::=--force-unsafe-io --assume-yes --quiet
}

wo_install_dep() {

    if [ "$wo_linux_distro" == "Ubuntu" ]; then
        # install dependencies
        apt-get -option=Dpkg::options::=--force-confmiss --option=Dpkg::options::=--force-confold --assume-yes install \
            build-essential curl gzip python3-pip python3-wheel python3-apt python3-setuptools python3-dev sqlite3 git tar software-properties-common pigz \
            gnupg2 cron ccze rsync apt-transport-https tree haveged ufw unattended-upgrades tzdata ntp > /dev/null 2>&1
        add-apt-repository ppa:wordops/nginx-wo -yn
    else
        # install dependencies
        apt-get -option=Dpkg::options::=--force-confmiss --option=Dpkg::options::=--force-confold --assume-yes install \
            build-essential curl gzip dirmngr sudo python3-pip python3-wheel python3-apt python3-setuptools python3-dev ca-certificates sqlite3 git tar \
            software-properties-common pigz apt-transport-https gnupg2 cron ccze rsync tree haveged ufw unattended-upgrades tzdata ntp > /dev/null 2>&1
        # add php repository gpg key
        [ -d /etc/apt/trusted.gpg.d ] && { wget -qO /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg; }
        # add nginx repository gpg key
        curl -sL https://download.opensuse.org/repositories/home:virtubox:WordOps/Debian_10/Release.key | apt-key add -
    fi

    locale-gen en
    # enable unattended upgades
    if [ ! -f /etc/apt/apt.conf.d/20auto-upgrades ]; then
        cp /usr/share/unattended-upgrades/20auto-upgrades /etc/apt/apt.conf.d/20auto-upgrades
    fi

}

wo_timesync() {
    # set default ntp pools
    if [ -f /etc/systemd/timesyncd.conf ]; then
        if ! grep -q "time.cloudflare.com" /etc/systemd/timesyncd.conf; then
            sed -e 's/^#NTP=/NTP=time.cloudflare.com 0.ubuntu.pool.ntp.org 1.ubuntu.pool.ntp.org 2.ubuntu.pool.ntp.org 3.ubuntu.pool.ntp.org/' -i /etc/systemd/timesyncd.conf
            # enable ntp
            timedatectl set-ntp 1
        fi
    fi
}

###
# 3 - Create/migrate the essentials
###
wo_sync_db() {
    ###
    # Switching from EE -> WO
    ###
    if [ ! -f /var/lib/wo/dbase.db ]; then
        # Create the WordOps folder
        mkdir -p /var/lib/wo

        if [ -f /var/lib/ee/ee.db ]; then
            # Make a backup of the EasyEngine database
            cp /var/lib/ee/ee.db /var/lib/wo/dbase-ee.db

            # Copy ee database
            cp /var/lib/ee/ee.db /var/lib/wo/dbase.db
        else
            if [ -d /etc/nginx/sites-available ]; then

                # Create an empty database for WordOps
                echo "CREATE TABLE sites (
           id INTEGER PRIMARY KEY     AUTOINCREMENT,
           sitename UNIQUE,
           site_type CHAR,
           cache_type CHAR,
           site_path  CHAR,
           created_on TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
           is_enabled INT,
           is_ssl INT,
           storage_fs CHAR,
           storage_db CHAR,
           db_name VARCHAR,
           db_user VARCHAR,
           db_password VARCHAR,
           db_host VARCHAR,
           is_hhvm INT INT DEFAULT '0',
           php_version VARCHAR
            );" | sqlite3 /var/lib/wo/dbase.db

                # Check site is enable/live or disable
                AV_SITES="$(basename -a /etc/nginx/sites-available/* | grep -v default)"
                for site in $AV_SITES; do
                    if [ -h "/etc/nginx/sites-enabled/$site" ]; then
                        wo_site_status='1'
                    else
                        wo_site_status='0'
                    fi

                    # Acquire information about the current nginx configuration

                    wo_site_current_type=$(grep "common/" "/etc/nginx/sites-available/$site" | awk -F "/" '{print $2}')

                    if echo "$wo_site_current_type" | grep -q "redis"; then
                        wo_site_current_cache="wpredis"
                    elif echo "$wo_site_current_type" | grep -q wpsc; then
                        wo_site_current_cache="wpsc"
                    elif echo "$wo_site_current_type" | grep -q wpfc; then
                        wo_site_current_cache="wpfc"
                    else
                        wo_site_current_cache="basic"
                    fi

                    if echo "$wo_site_current_type" | grep -q wp; then
                        if echo "$wo_site_current_type" | grep -q wpsubdir; then
                            wo_site_current="wpsubdir"
                        elif echo "$wo_site_current_type" | grep -q wpsudomain; then
                            wo_site_current="wpsubdomain"
                        else
                            wo_site_current="wp"
                        fi
                    else
                        if echo "$wo_site_current_type" | grep -q location; then
                            wo_site_current="proxy"
                        elif echo "$wo_site_current_type" | grep -q php; then
                            wo_site_current="html"
                        else
                            if [ -f "/var/www/${site}/ee-config.php" ] || [ -f "/var/www/${site}/wo-config.php" ]; then
                                wo_site_current="mysql"
                            else
                                wo_site_current="php"
                            fi
                        fi
                    fi

                    wo_webroot="/var/www/$site"

                    # Import the configuration into the WordOps SQLite database
                    echo "INSERT INTO sites (sitename, site_type, cache_type, site_path, is_enabled, is_ssl, storage_fs, storage_db)
            VALUES (\"$site\", \"$wo_site_current\", \"$wo_site_current_cache\", \"$wo_webroot\", \"$wo_site_status\", 0, 'ext4', 'mysql');" | sqlite3 /var/lib/wo/dbase.db

                done
            fi
        fi

        #        echo "UPDATE sites SET php_version = REPLACE(php_version, '5.6', '7.2');" | sqlite3 /var/lib/wo/dbase.db
        #        echo "UPDATE sites SET php_version = REPLACE(php_version, '7.0', '7.3');" | sqlite3 /var/lib/wo/dbase.db
    fi
}

# Once again, set the proper ACL on the WordOps configuration directory
secure_wo_db() {

    # The owner is root
    chown -R root:root /var/lib/wo
    # Only allow access by root, block others
    chmod -R 600 /var/lib/wo

}

# Update the WP-CLI version
wo_update_wp_cli() {
    WP_CLI_PATH=$(command -v wp)
    if [ -n "$WP_CLI_PATH" ]; then
        rm -rf "$WP_CLI_PATH"
    fi
    # Update WP-CLI to the most recent version
    wget -qO /usr/local/bin/wp https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar
    chmod +x /usr/local/bin/wp
    [ ! -h /usr/bin/wp ] && {
        ln -s /usr/local/bin/wp /usr/bin/
    }
    [ -d /etc/bash_completion.d ] && {
        wget -qO /etc/bash_completion.d/wp-completion.bash https://raw.githubusercontent.com/wp-cli/wp-cli/master/utils/wp-completion.bash
    }

}

wo_install_acme_sh() {
    # check if acme.sh is already installed
    if [ ! -x /etc/letsencrypt/acme.sh ]; then

        # clone the git repository
        if [ -d /opt/acme.sh/.git ]; then
            git -C /opt/acme.sh pull origin master
        else
            git clone --depth=50 https://github.com/Neilpang/acme.sh.git /opt/acme.sh -q
        fi
        cd /opt/acme.sh || exit 1
        # create conf directories
        mkdir -p /etc/letsencrypt/{config,live,renewal}
        # install acme.sh
        ./acme.sh --install \
            --home /etc/letsencrypt \
            --config-home /etc/letsencrypt/config \
            --cert-home /etc/letsencrypt/renewal
        # enable auto-upgrade
        /etc/letsencrypt/acme.sh --config-home '/etc/letsencrypt/config' --upgrade --auto-upgrade

    fi

    if [ -x "$HOME/.acme.sh/acme.sh" ]; then
        # backup acme.sh folder
        /bin/tar -I pigz -cf /var/lib/wo-backup/acme.sh.tar.gz "$HOME/.acme.sh"
        # rsync previous certificates to new acme.sh location
        /usr/bin/rsync -rltgoDpz --exclude="account.conf" \
            --exclude="acme.sh" \
            --exclude="acme.sh.env" \
            --exclude="deploy" \
            --exclude="dnsapi" \
            --exclude="http.header" \
            --exclude="ca" \
            "$HOME/.acme.sh/" \
            /etc/letsencrypt/renewal/
        # remove previous acme.sh folder
        rm -rf "$HOME/.acme.sh"
        mkdir "$HOME/.acme.sh"
        touch "$HOME/.acme.sh/acme.sh.env"
        # removing previous cronjob
        crontab -l | sed '/41 0 \* \* \* "\/root\/\.acme\.sh"\/acme.sh --cron --home "\/root\/\.acme\.sh" > \/dev\/null/d' | crontab -

    fi
    # Let's Encrypt .well-known folder setup
    if [ ! -d /var/www/html/.well-known/acme-challenge ]; then
        mkdir -p /var/www/html/.well-known/acme-challenge
        chown -R www-data:www-data /var/www/html /var/www/html/.well-known
        chmod 750 /var/www/html /var/www/html/.well-known
    else
        chown -R www-data:www-data /var/www/html /var/www/html/.well-known
        chmod 750 /var/www/html /var/www/html/.well-known
    fi
}

wo_git_config() {

    if [ "$wo_force_install" = "y" ]; then
        [ ! -f "$HOME/.gitconfig" ] && { bash -c 'echo -e "[user]\n\tname = $USER\n\temail = root@$HOSTNAME.local" > $HOME/.gitconfig'; }
    fi

    # .gitconfig inital setup
    cd /var/lib/wo/tmp/WordOps-install || exit 1
    python3 gitconfig.py

}

# Download WordOps
wo_download() {
    rm -f /etc/bash_completion.d/wo_auto.rc
    rm -rf /var/lib/wo/tmp/WordOps-*
    if [ -z "$wo_version" ]; then
        curl -sL https://github.com/WordOps/WordOps/archive/${wo_branch}.tar.gz | tar -I pigz -xf - -C /var/lib/wo/tmp
        mv "/var/lib/wo/tmp/WordOps-$wo_branch" /var/lib/wo/tmp/WordOps-install
    else
        curl -sL https://github.com/WordOps/WordOps/archive/v${wo_version}.tar.gz | tar -I pigz -xf - -C /var/lib/wo/tmp
        mv "/var/lib/wo/tmp/WordOps-$wo_version" /var/lib/wo/tmp/WordOps-install
    fi
}

# WordOps install
wo_install() {

    cd /var/lib/wo/tmp/WordOps-install || exit 1
    python3 setup.py install

}

# Clone Github repository if it doesn't exist
wo_install_travis() {

    if [ "$wo_force_install" = "y" ]; then
        [ ! -f "$HOME/.gitconfig" ] && { bash -c 'echo -e "[user]\n\tname = $USER\n\temail = root@$HOSTNAME.local" > $HOME/.gitconfig'; }
    fi

    if [ -f "$HOME/.gitconfig" ]; then
        # install and redirect log to not print python package install
        python3 setup.py install
    fi

}

wo_upgrade_nginx() {

    if [ -d /var/lib/wo-backup/nginx ]; then
        /bin/tar -I pigz "$NGINX_BACKUP_FILE" /var/lib/wo-backup/nginx
        rm -rf /var/lib/wo-backup/nginx
    fi
    # backup nginx conf
    if [ -d /etc/nginx ]; then
        /usr/bin/rsync -a --noatime /etc/nginx/ /var/lib/wo-backup/nginx/
    fi
    if [ -d /etc/php ]; then
        /usr/bin/rsync -a --noatime /etc/php/ /var/lib/wo-backup/php/
    fi
    # chec if the package nginx-ee is installed
    CHECK_NGINX_EE=$(dpkg --list | grep nginx-ee)
    CHECK_PHP72=$(command -v php-fpm7.2)

    # add new Nginx repository
    if [ "$wo_distro_version" == "jessie" ]; then
        # import the respository key for updates
        curl -sL https://download.opensuse.org/repositories/home:virtubox:WordOps/Debian_8.0/Release.key | apt-key add -
    else
        curl -sL https://download.opensuse.org/repositories/home:virtubox:WordOps/Debian_9.0/Release.key | apt-key add -
    fi

    # install new nginx package
    if [ -n "$CHECK_NGINX_EE" ]; then
        if [ -x /usr/local/bin/wo ]; then
            [ -f /etc/apt/preferences.d/nginx-block ] && { mv /etc/apt/preferences.d/nginx-block /var/lib/wo/tmp/nginx-block; }
            # stop nginx
            service nginx stop
            # remove previous package
            apt-mark unhold nginx-ee nginx-common nginx-custom
            apt-get autoremove nginx-ee nginx-common nginx-custom --allow-change-held-packages --purge -qq
            # remove previous php-fpm pool configuration
            if [ -n "$CHECK_PHP72" ]; then
                apt-get purge php7.2-fpm -y -qq
                rm -f /etc/php/7.2/fpm/pool.d/{www.conf,www-two.conf,debug.conf}
            fi
            if [ -d /etc/nginx ]; then
                rm -rf /etc/nginx
            fi
            /usr/local/bin/wo stack install --nginx --php
            rm -f /etc/nginx/common/acl.conf /etc/nginx/htpasswd-wo
            /usr/bin/rsync -au --noatime /var/lib/wo-backup/nginx/ /etc/nginx/
            /usr/local/bin/wo stack upgrade --nginx --force
        fi
    fi
    # restore sites and configuration
    [ -f /etc/nginx/htpasswd-ee ] && { cp -f /etc/nginx/htpasswd-ee /etc/nginx/htpasswd-wo; }
    sed -i "s/locations.conf/locations-wo.conf/" /etc/nginx/sites-available/*
    sed -i "s/locations-php7.conf/locations-wo.conf/" /etc/nginx/sites-available/*
    sed -i "s/locations-php71.conf/locations-wo.conf/" /etc/nginx/sites-available/*
    sed -i "s/locations-php72.conf/locations-wo.conf/" /etc/nginx/sites-available/*
    sed -i "s/locations-php73.conf/locations-wo.conf/" /etc/nginx/sites-available/*
    sed -i "s/htpasswd-ee/htpasswd-wo/" /etc/nginx/common/acl.conf
    sed -i 's/ssl on;/#ssl on;/' /var/www/*/conf/nginx/ssl.conf

    # update redis.conf headers
    if [ -f /etc/nginx/common/redis.conf ]; then
        sed -i "s/X-Cache /X-SRCache-Fetch-Status /g" /etc/nginx/common/redis.conf
        sed -i "s/X-Cache-2 /X-SRCache-Store-Status /g" /etc/nginx/common/redis.conf

    fi

    VERIFY_NGINX_CONFIG=$(nginx -t 2>&1 | grep failed)
    # check if nginx -t do not return errors
    if [ -z "$VERIFY_NGINX_CONFIG" ]; then
        systemctl stop nginx
        systemctl start nginx
    else
        VERIFY_NGINX_BUCKET=$(nginx -t 2>&1 | grep "server_names_hash_bucket_size")
        if [ -n "$VERIFY_NGINX_BUCKET" ]; then
            sed -i "s/# server_names_hash_bucket_size 64;/server_names_hash_bucket_size 128;/g" /etc/nginx/nginx.conf
        fi
        systemctl stop nginx
        systemctl start nginx
    fi
    [ -f /var/lib/wo/tmp/nginx-block ] && { mv /var/lib/wo/tmp/nginx-block /etc/apt/preferences.d/nginx-block; }

}

wo_update_latest() {

    # Move ~/.my.cnf to /etc/mysql/conf.d/my.cnf
    if [ ! -f /etc/mysql/conf.d/my.cnf ]; then
        # create conf.d folder if not exist
        [ ! -d /etc/mysql/conf.d ] && {
            mkdir -p /etc/mysql/conf.d
            chmod 755 /etc/mysql/conf.d
        }
        if [ -f "$HOME/.my.cnf" ]; then
            cp -f "$HOME/.my.cnf" /etc/mysql/conf.d/my.cnf
            chmod 600 /etc/mysql/conf.d/my.cnf

        elif [ -f /root/.my.cnf ]; then
            cp -f /root/.my.cnf /etc/mysql/conf.d/my.cnf
            chmod 600 /etc/mysql/conf.d/my.cnf
        fi
    else
        if [ ! -f /root/.my.cnf ]; then
            cp /etc/mysql/conf.d/my.cnf /root/.my.cnf
            chmod 600 /root/.my.cnf
        fi
    fi
}

wo_backup_ee() {
    local BACKUP_EE=""
    [ -d /etc/nginx ] && { BACKUP_EE="$BACKUP_EE /etc/nginx"; }
    [ -d /etc/letsencrypt ] && { BACKUP_EE="$BACKUP_EE /etc/letsencrypt"; }
    /bin/tar -I pigz -cf "$EE_BACKUP_FILE" /usr/local/bin/ee /usr/lib/ee/templates /etc/ee /var/lib/ee "$BACKUP_EE"
    return 0
}

wo_backup_wo() {
    if [ -d /etc/nginx ] && [ -d /etc/wo ] && [ -d /var/lib/wo ]; then
        /bin/tar -I pigz -cf "$WO_BACKUP_FILE" /etc/nginx /etc/wo /var/lib/wo
    fi
    return 0
}

wo_clean_ee() {
    rm -rf /usr/local/bin/ee /etc/bash_completion.d/ee_auto.rc /usr/lib/ee/templates /usr/local/lib/python3.*/dist-packages/ee-*.egg /etc/ee /var/lib/ee
    return 0
}

wo_remove_ee_cron() {

    crontab -l | sed '/ee site update --le=renew --all 2> \/dev\/null/d' | crontab -

}

wo_tweak_kernel() {

    if [ "$WO_ARCH" = "x86_64" ] && [ -z "$wo_lxc" ] && [ -z "$wo_wsl" ]; then
        rm -f /etc/sysctl.d/60-ubuntu-nginx-web-server.conf
        wget -qO /etc/sysctl.d/60-wo-tweaks.conf https://raw.githubusercontent.com/WordOps/WordOps/"$wo_branch"/wo/cli/templates/sysctl.mustache
        if [ "$wo_distro_version" = "bionic" ] || [ "$wo_distro_version" = "disco" ] || [ "$wo_distro_version" = "buster" ]; then
            modprobe tcp_bbr && echo 'tcp_bbr' >> /etc/modules-load.d/bbr.conf
            echo -e '\nnet.ipv4.tcp_congestion_control = bbr\nnet.ipv4.tcp_notsent_lowat = 16384' >> /etc/sysctl.d/60-wo-tweaks.conf
        else
            modprobe tcp_htcp && echo 'tcp_htcp' >> /etc/modules-load.d/htcp.conf
            echo 'net.ipv4.tcp_congestion_control = htcp' >> /etc/sysctl.d/60-wo-tweaks.conf
        fi
        # apply sysctl tweaks
        sysctl -eq -p /etc/sysctl.d/60-wo-tweaks.conf
    fi
}

wo_systemd_tweak() {

    if [ ! -x /opt/wo-kernel.sh ]; then
        # download and setup wo-kernel systemd service to apply kernel tweaks for netdata and redis on server startup
        wget -qO /opt/wo-kernel.sh https://raw.githubusercontent.com/WordOps/WordOps/updating-configuration/wo/cli/templates/wo-kernel-script.mustache
        chmod +x /opt/wo-kernel.sh
        wget -qO /lib/systemd/system/wo-kernel.service https://raw.githubusercontent.com/WordOps/WordOps/updating-configuration/wo/cli/templates/wo-kernel-service.mustache
        systemctl enable wo-kernel.service
        systemctl start wo-kernel.service
    fi

    LIMIT_CHECK=$(grep "500000" /etc/security/limits.conf)
    if [ -z "$LIMIT_CHECK" ]; then
        echo -e "*         hard    nofile      500000\n*         soft    nofile      500000\nroot      hard    nofile      500000\nroot      soft    nofile      500000\n" >> /etc/security/limits.conf
    fi

}

wo_domain_suffix() {
    curl -m 10 --retry 3 -sL https://raw.githubusercontent.com/publicsuffix/list/master/public_suffix_list.dat | sed '/^\/\//d' | sed '/^$/d' | sed 's/^\s+//g' > /var/lib/wo/public_suffix_list.dat
}

wo_mariadb_tweak() {
    # increase mariadb open_files_limit
    if [ -d /etc/systemd/system/mariadb.service.d ] && [ ! -f /etc/systemd/system/mariadb.service.d/limits.conf ]; then
        echo -e '[Service]\nLimitNOFILE=500000' > /etc/systemd/system/mariadb.service.d/limits.conf
        systemctl daemon-reload
        service mysql restart
    fi
}

wo_nginx_tweak() {
    # increase nginx open_files_limit
    if [ ! -d /etc/systemd/system/nginx.service.d ]; then
        mkdir -p /etc/systemd/system/nginx.service.d
        if [ ! -f /etc/systemd/system/nginx.service.d/limits.conf ]; then
            echo -e '[Service]\nLimitNOFILE=500000' > /etc/systemd/system/nginx.service.d/limits.conf
            systemctl daemon-reload
            nginx -t && service nginx restart
        fi
    fi
}

wo_clean() {
    rm -rf /usr/local/lib/python3.*/dist-packages/wo-*
}

wo_uninstall() {
    python3 -m pip uninstall wordops -y
    rm -rf /usr/local/lib/python3.*/dist-packages/{pystache-*,cement-2.*,wo-*} /usr/local/bin/wo /etc/bash_completion.d/wo_auto.rc /var/lib/wo /etc/wo /usr/lib/wo/templates
}

wo_cheat_install() {
    curl -sL https://cht.sh/:cht.sh > /usr/local/bin/cht.sh
    chmod +x /usr/local/bin/cht.sh
    [ ! -h /usr/local/bin/cheat ] && {
        rm -f /usr/local/bin/cheat
        ln -s /usr/local/bin/cht.sh /usr/local/bin/cheat
    }
    curl -sL https://cheat.sh/:bash_completion > /etc/bash_completion.d/cht.sh
}

###
# 4 - WO MAIN SETUP
###

# wo uninstall script
if [ "$wo_purge" = "y" ]; then
    _run wo_backup_wo "Backing-up WO install"
    _run wo_uninstall "Uninstalling WordOps"
    wo_lib_echo "The WordOps backup files can be found in $WO_BACKUP_FILE"
    exit 0
else
    # 1 - WO already installed
    if [ -x /usr/local/bin/wo ]; then
        if [ -z "$wo_force_install" ]; then
            if { wo -v 2>&1 | grep -q "$wo_version_new"; }; then
                wo_lib_error "You already have WordOps $wo_version_new" 1
            fi
        fi
        _run wo_backup_wo "Backing-up WO install"
        _run wo_clean
    # 2 - Migration from EEv3
    elif [ -x /usr/local/bin/ee ]; then
        if [ -z "$wo_force_install" ]; then
            echo -e "Migrate from EasyEngine to WordOps (y/n): " && read -r WO_ANSWER
            if [ "$WO_ANSWER" != "y" ] && [ "$WO_ANSWER" != "Y" ]; then
                wo_lib_error "Not installing WordOps" 1
            fi
        fi
        _run wo_backup_ee "Backing-up EE install"
        _run wo_remove_ee_cron "Removing EasyEngine cronjob"
        _run wo_sync_db "Syncing WO database"
    fi
    _run wo_install_dep "Installing wo dependencies"
    _run wo_timesync
    # skip steps if travis
    if [ -z "$wo_travis" ]; then
        _run wo_dist_upgrade
        _run wo_download "Downloading WordOps"
        wo_git_config
        _run wo_install "Installing WordOps"
    else
        _run wo_travis_install "Installing WordOps"
    fi
    if [ -x /usr/local/bin/ee ]; then
        _run wo_upgrade_nginx "Upgrading Nginx"
        _run wo_clean_ee "Cleaning previous EasyEngine install"
    fi
    _run wo_install_acme_sh
    _run wo_tweak_kernel "Applying Kernel tweaks"
    if [ ! -f /opt/wo-kernel.sh ]; then
        _run wo_systemd_tweak "Adding systemd service tweak"
    fi
    if [ -x /usr/sbin/nginx ]; then
        _run wo_nginx_tweak
    fi
    if [ -d /etc/systemd/system/mariadb.service.d ]; then
        _run wo_mariadb_tweak
    fi
    _run wo_cheat_install "Running post-install steps"
    _run wo_domain_suffix
    _run wo_update_wp_cli
    _run wo_update_latest
    _run secure_wo_db

    wo sync >> $wo_install_log 2>&1

    if [ "$ee_migration" = "1" ]; then
        echo
        wo_lib_echo "The migration from EasyEngine to WordOps was succesfull!"
        wo_lib_echo "The EasyEngine backup files can be found in /var/lib/wo-backup/ee-backup.tgz"
        echo
    elif [ "$wo_upgrade" = "1" ]; then
        wo_lib_echo "WordOps (wo) upgrade to $wo_version_new was succesfull!"
        echo
        wo_lib_echo "To upgrade WordOps stacks use the command:"
        wo_lib_echo_info "wo stack upgrade --all"
        echo
        wo_lib_echo "To update all other server packages use the command:"
        wo_lib_echo_info "wo maintenance"
    else
        wo_lib_echo "WordOps (wo) installed successfully"
        echo
        wo_lib_echo "To enable bash-completion, just use the command:"
        wo_lib_echo_info "bash -l"
        echo
        wo_lib_echo "To install WordOps recommended stacks, you can use the command:"
        wo_lib_echo_info "wo stack install"
        echo
        wo_lib_echo "To create a first WordPress site, you can use the command:"
        wo_lib_echo_info "wo site create site.tld --wp"
    fi
    echo
    wo_lib_echo "WordOps Documentation : https://docs.wordops.net"
    wo_lib_echo "WordOps Community Forum : https://community.wordops.net"
    echo
    wo_lib_echo "Give WordOps a GitHub star : https://github.com/WordOps/WordOps/"
    echo
fi