#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# nextcloud application
# In tests this is much too slow, and it appeared to self-destruct after a few minutes
# i.e. becoming totally unusable.
#
# License
# =======
#
# Copyright (C) 2017-2018 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

VARIANTS='full full-vim cloud'

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1

NEXTCLOUD_DOMAIN_NAME=
NEXTCLOUD_CODE=
NEXTCLOUD_ONION_PORT=8112
NEXTCLOUD_REPO="https://github.com/nextcloud/server"
# Stable 13 branch
NEXTCLOUD_COMMIT='b16824db31cd00e26e72216bf995d52389b9c93c'
NEXTCLOUD_ADMIN_PASSWORD=

nextcloud_variables=(ONION_ONLY
                     NEXTCLOUD_DOMAIN_NAME
                     NEXTCLOUD_CODE
                     DDNS_PROVIDER
                     MY_USERNAME)

function logging_on_nextcloud {
    echo -n ''
}

function logging_off_nextcloud {
    echo -n ''
}

function remove_user_nextcloud {
    remove_username="$1"

    ${PROJECT_NAME}-pass -u $remove_username --rmapp nextcloud
}

function add_user_nextcloud {
    new_username="$1"
    new_user_password="$2"

    ${PROJECT_NAME}-pass -u $new_username -a nextcloud -p "$new_user_password"
    echo '0'
}

function change_password_nextcloud {
    curr_username="$1"

    export OC_PASS="$2"
    su -s /bin/sh www-data -c "php occ user:resetpassword --password-from-env $curr_username"
    ${PROJECT_NAME}-pass -u $curr_username -a nextcloud -p "$OC_PASS"
    export OC_PASS=""
}

function install_interactive_nextcloud {
    if [ ! $ONION_ONLY ]; then
        ONION_ONLY='no'
    fi

    if [[ $ONION_ONLY != "no" ]]; then
        NEXTCLOUD_DOMAIN_NAME='nextcloud.local'
    else
        NEXTCLOUD_DETAILS_COMPLETE=
        while [ ! $NEXTCLOUD_DETAILS_COMPLETE ]
        do
            data=$(tempfile 2>/dev/null)
            trap "rm -f $data" 0 1 2 5 15
            if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"NextCloud Configuration" \
                       --form $"\nPlease enter your NextCloud details.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 13 65 3 \
                       $"Domain:" 1 1 "$(grep 'NEXTCLOUD_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 15 40 40 \
                       $"Code:" 2 1 "$(grep 'NEXTCLOUD_CODE' temp.cfg | awk -F '=' '{print $2}')" 2 15 40 255 \
                       2> $data
            else
                dialog --backtitle $"Freedombone Configuration" \
                       --title $"NextCloud Configuration" \
                       --form $"\nPlease enter your NextCloud details. The background image URL can be left blank.\n\nIMPORTANT: This should be a domain name which is supported by Let's Encrypt:" 13 65 2 \
                       $"Domain:" 1 1 "$(grep 'NEXTCLOUD_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 15 40 40 \
                       2> $data
            fi
            sel=$?
            case $sel in
                1) exit 1;;
                255) exit 1;;
            esac
            NEXTCLOUD_DOMAIN_NAME=$(cat $data | sed -n 1p)
            if [ ${#img_url} -gt 1 ]; then
                NEXTCLOUD_BACKGROUND_IMAGE_URL=$img_url
            fi
            if [ $NEXTCLOUD_DOMAIN_NAME ]; then
                TEST_DOMAIN_NAME=$NEXTCLOUD_DOMAIN_NAME
                validate_domain_name
                if [[ $TEST_DOMAIN_NAME != $NEXTCLOUD_DOMAIN_NAME ]]; then
                    NEXTCLOUD_DOMAIN_NAME=
                    dialog --title $"Domain name validation" --msgbox "$TEST_DOMAIN_NAME" 15 50
                else
                    if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
                        NEXTCLOUD_CODE=$(cat $data | sed -n 2p)
                        validate_freedns_code "$NEXTCLOUD_CODE"
                        if [ ! $VALID_CODE ]; then
                            NEXTCLOUD_DOMAIN_NAME=
                        fi
                    fi
                fi
            fi
            if [ $NEXTCLOUD_DOMAIN_NAME ]; then
                NEXTCLOUD_DETAILS_COMPLETE="yes"
            fi
        done

        # remove any invalid characters
        if [ ${#NEXTCLOUD_TITLE} -gt 0 ]; then
            new_title=$(echo "$NEXTCLOUD_TITLE" | sed "s|'||g")
            NEXTCLOUD_TITLE="$new_title"
        fi

        # save the results in the config file
        write_config_param "NEXTCLOUD_CODE" "$NEXTCLOUD_CODE"
    fi
    write_config_param "NEXTCLOUD_DOMAIN_NAME" "$NEXTCLOUD_DOMAIN_NAME"
    APP_INSTALLED=1
}

function change_password_nextcloud {
    curr_username="$1"
    new_user_password="$2"

    read_config_param ${NEXTCLOUD_DOMAIN_NAME}

    ${PROJECT_NAME}-pass -u "$curr_username" -a nextcloud -p "$new_user_password"
}

function nextcloud_create_database {
    if [ -f $IMAGE_PASSWORD_FILE ]; then
        NEXTCLOUD_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
    else
        if [ ! $NEXTCLOUD_ADMIN_PASSWORD ]; then
            NEXTCLOUD_ADMIN_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
        fi
    fi
    if [ ! $NEXTCLOUD_ADMIN_PASSWORD ]; then
        return
    fi

    function_check create_database
    create_database nextcloud "$NEXTCLOUD_ADMIN_PASSWORD" $MY_USERNAME
}

function reconfigure_nextcloud {
    echo -n ''
}

function configure_interactive_nextcloud {
    echo -n ''
}

function upgrade_nextcloud_base {
    chown -R www-data:www-data /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
    chown -R www-data:www-data /var/www/$NEXTCLOUD_DOMAIN_NAME/data
    cd /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
    sudo -u www-data ./occ maintenance:repair
    sudo -u www-data ./occ files:cleanup
    sudo -u www-data ./occ files:scan --all
    sudo -u www-data ./occ maintenance:mode --off
}

function upgrade_nextcloud {
    CURR_NEXTCLOUD_COMMIT=$(get_completion_param "nextcloud commit")
    if [[ "$CURR_NEXTCLOUD_COMMIT" == "$NEXTCLOUD_COMMIT" ]]; then
        upgrade_nextcloud_base
        return
    fi

    if grep -q "nextcloud domain" $COMPLETION_FILE; then
        NEXTCLOUD_DOMAIN_NAME=$(get_completion_param "nextcloud domain")
    fi

    # update to the next commit
    function_check set_repo_commit
    set_repo_commit /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs "nextcloud commit" "$NEXTCLOUD_COMMIT" $NEXTCLOUD_REPO

    upgrade_nextcloud_base
    sudo -u www-data ./occ upgrade
}


function backup_local_nextcloud {
    NEXTCLOUD_DOMAIN_NAME='nextcloud'
    if grep -q "nextcloud domain" $COMPLETION_FILE; then
        NEXTCLOUD_DOMAIN_NAME=$(get_completion_param "nextcloud domain")
    fi

    source_directory=/var/www/${NEXTCLOUD_DOMAIN_NAME}/data
    if [ -d $source_directory ]; then
        function_check suspend_site
        suspend_site ${NEXTCLOUD_DOMAIN_NAME}

        dest_directory=nextcloudfiles
        function_check backup_directory_to_usb
        backup_directory_to_usb $source_directory $dest_directory

        source_directory=/var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config
        dest_directory=nextcloudconfig
        backup_directory_to_usb $source_directory $dest_directory

        function_check backup_database_to_usb
        backup_database_to_usb nextcloud

        function_check restart_site
        restart_site
    fi
}

function restore_local_nextcloud {
    if ! grep -q "nextcloud domain" $COMPLETION_FILE; then
        return
    fi
    NEXTCLOUD_DOMAIN_NAME=$(get_completion_param "nextcloud domain")
    if [ $NEXTCLOUD_DOMAIN_NAME ]; then

        temp_restore_dir=/root/tempnextcloud
        function_check nextcloud_create_database
        nextcloud_create_database
        restore_database nextcloud ${NEXTCLOUD_DOMAIN_NAME}

        temp_restore_dir=/root/tempnextcloudfiles
        restore_directory_from_usb $temp_restore_dir nextcloudfiles

        if [ -d $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/data ]; then
            cp -r $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/data /var/www/${NEXTCLOUD_DOMAIN_NAME}/
        else
            cp -r $temp_restore_dir/* /var/www/${NEXTCLOUD_DOMAIN_NAME}/
        fi

        if [ ! "$?" = "0" ]; then
            set_user_permissions
            backup_unmount_drive
            exit 346723
        fi
        rm -rf ${temp_restore_dir}

        temp_restore_dir=/root/tempnextcloudconfig
        restore_directory_from_usb $temp_restore_dir nextcloudconfig

        if [ -d $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config ]; then
            cp -r $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs
        else
            cp -r $temp_restore_dir/* /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config/
        fi

        if [ ! "$?" = "0" ]; then
            set_user_permissions
            backup_unmount_drive
            exit 3467343
        fi
        rm -rf ${temp_restore_dir}

        chown -R www-data:www-data /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs
        chown -R www-data:www-data /var/www/${NEXTCLOUD_DOMAIN_NAME}/data
        cd $nextcloud_dir
        sudo -u www-data ./occ maintenance:repair
        sudo -u www-data ./occ files:cleanup
        sudo -u www-data ./occ files:scan --all
    fi
}

function backup_remote_nextcloud {
    if grep -q "nextcloud domain" $COMPLETION_FILE; then
        NEXTCLOUD_DOMAIN_NAME=$(get_completion_param "nextcloud domain")
        temp_backup_dir=/var/www/${NEXTCLOUD_DOMAIN_NAME}/data
        if [ -d $temp_backup_dir ]; then
            function_check suspend_site
            suspend_site ${NEXTCLOUD_DOMAIN_NAME}

            function_check backup_database_to_friend
            backup_database_to_friend nextcloud

            function_check backup_directory_to_friend
            backup_directory_to_friend $temp_backup_dir nextclouddata

            temp_backup_dir=/var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config
            backup_directory_to_friend $temp_backup_dir nextcloudconfig

            function_check restart_site
            restart_site
        else
            echo $"nextcloud domain specified but not found in ${temp_backup_dir}"
        fi
    fi
}

function restore_remote_nextcloud {
    if grep -q "nextcloud domain" $COMPLETION_FILE; then
        echo $"Restoring nextcloud"
        NEXTCLOUD_DOMAIN_NAME=$(get_completion_param "nextcloud domain")

        function_check nextcloud_create_database
        nextcloud_create_database

        function_check restore_database_from_friend
        restore_database_from_friend nextcloud ${NEXTCLOUD_DOMAIN_NAME}
        if [ -d /root/tempnextcloud ]; then
            rm -rf /root/tempnextcloud
        fi

        temp_restore_dir=/root/tempnextcloudfiles
        restore_directory_from_friend $temp_restore_dir nextcloudfiles

        if [ -d $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/data ]; then
            cp -r $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/data /var/www/${NEXTCLOUD_DOMAIN_NAME}/
        else
            cp -r $temp_restore_dir/* /var/www/${NEXTCLOUD_DOMAIN_NAME}/
        fi

        if [ ! "$?" = "0" ]; then
            exit 768254
        fi
        rm -rf ${temp_restore_dir}

        temp_restore_dir=/root/tempnextcloudconfig
        restore_directory_from_friend $temp_restore_dir nextcloudconfig

        if [ -d $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config ]; then
            cp -r $temp_restore_dir/var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs
        else
            cp -r $temp_restore_dir/* /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config/
        fi

        if [ ! "$?" = "0" ]; then
            exit 573427
        fi
        rm -rf ${temp_restore_dir}

        chown -R www-data:www-data /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs
        chown -R www-data:www-data /var/www/${NEXTCLOUD_DOMAIN_NAME}/data
        cd /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs
        sudo -u www-data ./occ maintenance:repair
        sudo -u www-data ./occ files:cleanup
        sudo -u www-data ./occ files:scan --all
    fi
}

function remove_nextcloud {
    if [ ${#NEXTCLOUD_DOMAIN_NAME} -eq 0 ]; then
        return
    fi
    function_check remove_nodejs
    remove_nodejs pleroma-nextcloud

    sed -i 's|env[PATH]|;env[PATH]|g' /etc/php/7.0/fpm/pool.d/www.conf

    read_config_param "NEXTCLOUD_DOMAIN_NAME"
    read_config_param "MY_USERNAME"
    echo "Removing $NEXTCLOUD_DOMAIN_NAME"
    nginx_dissite $NEXTCLOUD_DOMAIN_NAME
    remove_certs $NEXTCLOUD_DOMAIN_NAME
    if [ -d /var/www/$NEXTCLOUD_DOMAIN_NAME ]; then
        rm -rf /var/www/$NEXTCLOUD_DOMAIN_NAME
    fi
    if [ -f /etc/nginx/sites-available/$NEXTCLOUD_DOMAIN_NAME ]; then
        rm /etc/nginx/sites-available/$NEXTCLOUD_DOMAIN_NAME
    fi
    function_check drop_database
    drop_database nextcloud
    function_check remove_onion_service
    remove_onion_service nextcloud ${NEXTCLOUD_ONION_PORT}
    remove_app nextcloud
    remove_completion_param install_nextcloud
    sed -i '/nextcloud/d' $COMPLETION_FILE
    remove_backup_database_local nextcloud

    function_check remove_ddns_domain
    remove_ddns_domain $NEXTCLOUD_DOMAIN_NAME
    systemctl restart nginx
    systemctl restart php7.0-fpm
}

function install_nextcloud_main {
    if [ ! $NEXTCLOUD_DOMAIN_NAME ]; then
        echo $'No domain name was given for nextcloud'
        exit 7359
    fi

    if [[ $(app_is_installed nextcloud_main) == "1" ]]; then
        return
    fi

    function_check install_mariadb
    install_mariadb

    function_check get_mariadb_password
    get_mariadb_password

    function_check repair_databases_script
    repair_databases_script

    apt-get -yq install php-gettext php-curl php-gd php-mysql git curl
    apt-get -yq install php-intl memcached php-memcached libfcgi0ldbl
    apt-get -yq install php-zip

    # Ensure PATH is available to php
    if [ ! -f /etc/php/7.0/fpm/pool.d/www.conf ]; then
       echo $'No php www configuration file found'
       exit 628757
    fi
    sed -i 's|;env[PATH]|env[PATH]|g' /etc/php/7.0/fpm/pool.d/www.conf

    if [ ! -d /var/www/$NEXTCLOUD_DOMAIN_NAME ]; then
        mkdir /var/www/$NEXTCLOUD_DOMAIN_NAME
    fi
    if [ ! -d /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs ]; then

        if [ -d /repos/nextcloud ]; then
            mkdir /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
            cp -r -p /repos/nextcloud/. /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
            cd /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
            git pull
        else
            function_check git_clone
            git_clone $NEXTCLOUD_REPO /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
        fi

        if [ ! -d /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs ]; then
            echo $'Unable to clone nextcloud repo'
            exit 87525
        fi
    fi

    cd /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
    git submodule update --init
    git checkout $NEXTCLOUD_COMMIT -b $NEXTCLOUD_COMMIT
    set_completion_param "nextcloud commit" "$NEXTCLOUD_COMMIT"

    chmod g+w /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs
    chown -R www-data:www-data /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs

    function_check nextcloud_create_database
    nextcloud_create_database

    if [ ! -f "/etc/aliases" ]; then
        touch /etc/aliases
    fi
    if ! grep -q "www-data: root" /etc/aliases; then
        echo 'www-data: root' >> /etc/aliases
    fi

    function_check add_ddns_domain
    add_ddns_domain $NEXTCLOUD_DOMAIN_NAME

    nextcloud_nginx_site=/etc/nginx/sites-available/$NEXTCLOUD_DOMAIN_NAME
    if [[ $ONION_ONLY == "no" ]]; then
        function_check nginx_http_redirect
        nginx_http_redirect $NEXTCLOUD_DOMAIN_NAME
        echo 'server {' >> $nextcloud_nginx_site
        echo '  listen 443 ssl;' >> $nextcloud_nginx_site
        echo '  listen [::]:443 ssl;' >> $nextcloud_nginx_site
        echo "  server_name $NEXTCLOUD_DOMAIN_NAME;" >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  # Security' >> $nextcloud_nginx_site
        function_check nginx_ssl
        nginx_ssl $NEXTCLOUD_DOMAIN_NAME mobile

        function_check nginx_disable_sniffing
        nginx_disable_sniffing $NEXTCLOUD_DOMAIN_NAME

        echo '  add_header Strict-Transport-Security max-age=15768000;' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  # Logs' >> $nextcloud_nginx_site
        echo '  access_log /dev/null;' >> $nextcloud_nginx_site
        echo '  error_log /dev/null;' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  # Root' >> $nextcloud_nginx_site
        echo "  root /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs;" >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  # Index' >> $nextcloud_nginx_site
        echo '  index index.php;' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site

        # By default nextcloud advertises highly specific version information
        # on status.php, which can obviously be used by adversaries.
        # Blocking status.php prevents this information leak
        echo '  location = /status.php {' >> $nextcloud_nginx_site
        echo '    return 404;' >> $nextcloud_nginx_site
        echo '  }' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site

        echo '  # PHP' >> $nextcloud_nginx_site
        echo '  location ~ \.php {' >> $nextcloud_nginx_site
        echo '    include snippets/fastcgi-php.conf;' >> $nextcloud_nginx_site
        echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;' >> $nextcloud_nginx_site
        echo '    fastcgi_read_timeout 30;' >> $nextcloud_nginx_site
        echo '  }' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  # Location' >> $nextcloud_nginx_site
        echo '  location / {' >> $nextcloud_nginx_site
        function_check nginx_limits
        nginx_limits $NEXTCLOUD_DOMAIN_NAME '15m'
        echo '    try_files $uri $uri/ @nextcloud;' >> $nextcloud_nginx_site
        echo '  }' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  # Fancy URLs' >> $nextcloud_nginx_site
        echo '  location @nextcloud {' >> $nextcloud_nginx_site
        echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $nextcloud_nginx_site
        echo '  }' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  # Restrict access that is unnecessary anyway' >> $nextcloud_nginx_site
        echo '  location ~ /\.(ht|git) {' >> $nextcloud_nginx_site
        echo '    deny all;' >> $nextcloud_nginx_site
        echo '  }' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  location = /.well-known/carddav {' >> $nextcloud_nginx_site
        echo '    return 301 $scheme://$host/remote.php/dav;' >> $nextcloud_nginx_site
        echo '  }' >> $nextcloud_nginx_site
        echo '  location = /.well-known/caldav {' >> $nextcloud_nginx_site
        echo '    return 301 $scheme://$host/remote.php/dav;' >> $nextcloud_nginx_site
        echo '  }' >> $nextcloud_nginx_site
        echo '' >> $nextcloud_nginx_site
        echo '  location /.well-known/acme-challenge { }' >> $nextcloud_nginx_site
        echo '}' >> $nextcloud_nginx_site
    else
        echo -n '' > $nextcloud_nginx_site
    fi
    echo 'server {' >> $nextcloud_nginx_site
    echo "    listen 127.0.0.1:$NEXTCLOUD_ONION_PORT default_server;" >> $nextcloud_nginx_site
    echo "    server_name $NEXTCLOUD_DOMAIN_NAME;" >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    function_check nginx_disable_sniffing
    nginx_disable_sniffing $NEXTCLOUD_DOMAIN_NAME
    echo '' >> $nextcloud_nginx_site
    echo '  # Logs' >> $nextcloud_nginx_site
    echo '  access_log /dev/null;' >> $nextcloud_nginx_site
    echo '  error_log /dev/null;' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    echo '  # Root' >> $nextcloud_nginx_site
    echo "  root /var/www/$NEXTCLOUD_DOMAIN_NAME/htdocs;" >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    echo '  # Index' >> $nextcloud_nginx_site
    echo '  index index.php;' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site

    # By default nextcloud advertises highly specific version information
    # on status.php, which can obviously be used by adversaries.
    # Blocking status.php prevents this information leak
    echo '  location = /status.php {' >> $nextcloud_nginx_site
    echo '    return 404;' >> $nextcloud_nginx_site
    echo '  }' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site

    echo '  # PHP' >> $nextcloud_nginx_site
    echo '  location ~ \.php {' >> $nextcloud_nginx_site
    echo '    include snippets/fastcgi-php.conf;' >> $nextcloud_nginx_site
    echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;' >> $nextcloud_nginx_site
    echo '    fastcgi_read_timeout 30;' >> $nextcloud_nginx_site
    echo '  }' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    echo '  # Location' >> $nextcloud_nginx_site
    echo '  location / {' >> $nextcloud_nginx_site
    function_check nginx_limits
    nginx_limits $NEXTCLOUD_DOMAIN_NAME '15m'
    echo '    try_files $uri $uri/ @nextcloud;' >> $nextcloud_nginx_site
    echo '  }' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    echo '  # Fancy URLs' >> $nextcloud_nginx_site
    echo '  location @nextcloud {' >> $nextcloud_nginx_site
    echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> $nextcloud_nginx_site
    echo '  }' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    echo '  # Restrict access that is unnecessary anyway' >> $nextcloud_nginx_site
    echo '  location ~ /\.(ht|git) {' >> $nextcloud_nginx_site
    echo '    deny all;' >> $nextcloud_nginx_site
    echo '  }' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    echo '  location = /.well-known/carddav {' >> $nextcloud_nginx_site
    echo '    return 301 $scheme://$host/remote.php/dav;' >> $nextcloud_nginx_site
    echo '  }' >> $nextcloud_nginx_site
    echo '  location = /.well-known/caldav {' >> $nextcloud_nginx_site
    echo '    return 301 $scheme://$host/remote.php/dav;' >> $nextcloud_nginx_site
    echo '  }' >> $nextcloud_nginx_site
    echo '' >> $nextcloud_nginx_site
    echo '  location /.well-known/acme-challenge { }' >> $nextcloud_nginx_site
    echo '}' >> $nextcloud_nginx_site

    sed -i 's| DENY;| SAMEORIGIN;|g' $nextcloud_nginx_site

    # NextCloud doesn't like content-security-policy at all
    sed -i '/Content-Security-Policy/d' $nextcloud_nginx_site

    function_check configure_php
    configure_php

    function_check create_site_certificate
    create_site_certificate $NEXTCLOUD_DOMAIN_NAME 'yes'

    if [[ $ONION_ONLY == "no" ]]; then
        if [ ! -f /etc/ssl/certs/${NEXTCLOUD_DOMAIN_NAME}.pem ]; then
            echo $'Certificate not generated for nextcloud'
            exit 725762
        fi
    fi

    # Ensure that the database gets backed up locally, if remote
    # backups are not being used
    function_check backup_databases_script_header
    backup_databases_script_header

    function_check backup_database_local
    backup_database_local nextcloud

    function_check nginx_ensite
    nginx_ensite $NEXTCLOUD_DOMAIN_NAME

    # NOTE: For the typical case always enable SSL and only
    # disable it if in onion only mode. This is due to complexities
    # with the way URLs are generated by nextcloud
    nextcloud_ssl='always'
    if [[ $ONION_ONLY != 'no' ]]; then
        nextcloud_ssl='never'
    fi

    NEXTCLOUD_ONION_HOSTNAME=$(add_onion_service nextcloud 80 ${NEXTCLOUD_ONION_PORT})

    NEXTCLOUD_SERVER=${NEXTCLOUD_DOMAIN_NAME}
    if [[ $ONION_ONLY != 'no' ]]; then
        NEXTCLOUD_SERVER=${NEXTCLOUD_ONION_HOSTNAME}
    fi

    systemctl restart php7.0-fpm
    systemctl restart nginx

    ${PROJECT_NAME}-addemail -u $MY_USERNAME -e "noreply@$NEXTCLOUD_DOMAIN_NAME" -g nextcloud --public no

    ${PROJECT_NAME}-pass -u $MY_USERNAME -a nextcloud -p "$NEXTCLOUD_ADMIN_PASSWORD"

    cd /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs
    if [ -d config ]; then
        chown -R www-data:www-data config
    fi
    if [ -d data ]; then
        chown -R www-data:www-data data
    fi

    chmod +x occ
    ./occ maintenance:install --database-name nextcloud --admin-user ${MY_USERNAME} --admin-pass "${NEXTCLOUD_ADMIN_PASSWORD}" --database mysql --database-user root --database-pass "${MARIADB_PASSWORD}"
    if [ ! -d data ]; then
        echo $'Nextcloud data directory was not found. This probably means that the installation failed.'
        echo ''
        echo $'Install command was:'
        echo "./occ maintenance:install --database-name nextcloud --admin-user ${MY_USERNAME} --admin-pass \"${NEXTCLOUD_ADMIN_PASSWORD}\" --database mysql --database-user root --database-pass \"${MARIADB_PASSWORD}\""
        exit 83522
    fi
    chown -R www-data:www-data config
    chown -R www-data:www-data data
    sudo -u www-data ./occ check
    sudo -u www-data ./occ status
    sudo -u www-data ./occ app:list
    sudo -u www-data ./occ app:enable encryption
    sudo -u www-data ./occ encryption:enable
    if [ ! "$?" = "0" ]; then
        echo $'Encryption not enabled'
        exit 73527
    fi
    sudo -u www-data ./occ encryption:status
    sudo -u www-data ./occ config:system:set appstoreenabled --value=false
    chmod g+w /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config/config.php
    chown -R www-data:www-data /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs
    chmod 0644 .htaccess
    chmod 0750 data
    chown -R www-data:www-data /var/www/${NEXTCLOUD_DOMAIN_NAME}/data
    sudo -u www-data ./occ config:system:set trusted_domains 1 --value=$NEXTCLOUD_DOMAIN_NAME
    sudo -u www-data ./occ config:system:set trusted_domains 2 --value=$NEXTCLOUD_ONION_HOSTNAME
    sudo -u www-data ./occ files:cleanup
    sudo -u www-data ./occ files:scan --all
    sudo -u www-data ./occ maintenance:repair
    sudo -u www-data ./occ maintenance:mode --off

    systemctl restart mariadb

    # move the data directory
    mv /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/data /var/www/${NEXTCLOUD_DOMAIN_NAME}/
    sed -i "s|'datadirectory'.*|'datadirectory' => '/var/www/$NEXTCLOUD_DOMAIN_NAME/data',|g" /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config/config.php

    set_completion_param "nextcloud domain" "$NEXTCLOUD_DOMAIN_NAME"

    install_completed nextcloud_main
}

function install_nextcloud {
    if [ ! $ONION_ONLY ]; then
        ONION_ONLY='no'
    fi

    install_nextcloud_main

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"
