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Installation

for debian 12!

cat << EOF > /etc/apt/sources.list
deb http://deb.debian.org/debian bookworm main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian bookworm main contrib non-free non-free-firmware

deb http://deb.debian.org/debian-security/ bookworm-security main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian-security/ bookworm-security main contrib non-free non-free-firmware

deb http://deb.debian.org/debian bookworm-updates main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian bookworm-updates main contrib non-free non-free-firmware

deb http://deb.debian.org/debian bookworm-backports main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian bookworm-backports main contrib non-free non-free-firmware
EOF

apt update -y
apt full-upgrade -y

apt-mark hold apache2 apache2-bin 
apt install -y --no-install-recommends php php-{fpm,ctype,curl,dom,fileinfo,gd,mbstring,xml,xmlreader,xmlwriter,zip,sqlite3,mysql,pgsql,intl,ldap,ftp,imap,bcmath,gmp,exif,apcu,memcached,redis,imagick,phar} libmagickcore-6.q16-6-extra ffmpeg nginx aria2 curl wget unzip bzip2 p7zip p7zip-full postgresql redis certbot python3-certbot-nginx

# PHP Tuning
PHP_VERSION="8.2"

files=(
  "/etc/php/$PHP_VERSION/mods-available/apcu.ini"
  "/etc/php/$PHP_VERSION/cli/conf.d/20-apcu.ini"
  "/etc/php/$PHP_VERSION/fpm/conf.d/20-apcu.ini"
)
for file in "${files[@]}"; do grep -q "^apc.enable_cli.*" "$file" && sed -i 's/^apc.enable_cli.*/apc.enable_cli=1/' "$file" || echo "apc.enable_cli=1" >> "$file"; done

sed -i "s/.*clear_env.*/clear_env=no/" /etc/php/$PHP_VERSION/fpm/pool.d/www.conf
sed -i 's/.*max_input_time.*/max_input_time=3600/' /etc/php/$PHP_VERSION/cli/php.ini
sed -i 's/.*max_input_time.*/max_input_time=3600/' /etc/php/$PHP_VERSION/fpm/php.ini
sed -i 's/.*max_execution_time.*/max_execution_time=3600/' /etc/php/$PHP_VERSION/cli/php.ini
sed -i 's/.*max_execution_time.*/max_execution_time=3600/' /etc/php/$PHP_VERSION/fpm/php.ini
sed -i "s/.*memory_limit.*/memory_limit=512M/" /etc/php/$PHP_VERSION/fpm/php.ini
sed -i "s/.*memory_limit.*/memory_limit=512M/" /etc/php/$PHP_VERSION/cli/php.ini
sed -i "s/.*opcache.enable=.*/opcache.enable=1/" /etc/php/$PHP_VERSION/fpm/php.ini
sed -i "s/.*opcache.enable=.*/opcache.enable=1/" /etc/php/$PHP_VERSION/cli/php.ini
sed -i "s/.*opcache.enable_cli=.*/opcache.enable_cli=1/" /etc/php/$PHP_VERSION/fpm/php.ini
sed -i "s/.*opcache.enable_cli=.*/opcache.enable_cli=1/" /etc/php/$PHP_VERSION/cli/php.ini
sed -i "s/.*post_max_size.*/post_max_size=200G/" /etc/php/$PHP_VERSION/fpm/php.ini
sed -i "s/.*post_max_size.*/post_max_size=200G/" /etc/php/$PHP_VERSION/cli/php.ini
sed -i "s/.*upload_max_filesize.*/upload_max_filesize=200G/" /etc/php/$PHP_VERSION/fpm/php.ini
sed -i "s/.*upload_max_filesize.*/upload_max_filesize=200G/" /etc/php/$PHP_VERSION/cli/php.ini

service php8.2-fpm restart

# PostgreSQL
PG_PASSWORD=$(openssl rand -base64 12)

sudo -u postgres psql <<EOF
CREATE DATABASE nextcloud;
CREATE USER nextcloud WITH PASSWORD '${PG_PASSWORD}';
GRANT ALL PRIVILEGES ON DATABASE nextcloud TO nextcloud;
ALTER DATABASE nextcloud OWNER TO nextcloud;
CREATE SCHEMA IF NOT EXISTS public;
GRANT USAGE ON SCHEMA public TO nextcloud;
EOF

cat << EOF
--- [PostgreSQL] ---
User: nextcloud
Database: nextcloud
Password: ${PG_PASSWORD}
# Bitte Speichern, auch wenn es warscheinlich nicht mehr benötigt wird.
EOF

# Redis
REDIS_PASSWORD=$(openssl rand -base64 12)
sed -i 's/.*port 6379.*/port 0/' /etc/redis/redis.conf
sed -i "s/.*unixsocket .*/unixsocket \/run\/redis\/redis-server.sock/" /etc/redis/redis.conf
sed -i 's/.*unixsocketperm .*/unixsocketperm 770/' /etc/redis/redis.conf
sed -i 's/.*maxclients .*/maxclients 10240/' /etc/redis/redis.conf
sed -i "s/.*requirepass foobared.*/requirepass $(echo "$REDIS_PASSWORD" | sed -e 's/[\/&]/\\&/g')/" /etc/redis/redis.conf
usermod -aG redis www-data
service redis-server restart

cat << EOF
--- [REDIS] ---
Unixsocket: 
Database: nextcloud
Password: ${REDIS_PASSWORD}
# Bitte Speichern, auch wenn es warscheinlich nicht mehr benötigt wird.
EOF

# NGINX
DOMAIN="cloud.example.com"
CERTMAIL="ssl@example.com"
certbot certonly --nginx --non-interactive --agree-tos --email $CERTMAIL -d $DOMAIN 

rm -f /etc/nginx/sites-enabled/default
cat << 'EOF' > /etc/nginx/sites-enabled/nextcloud
upstream php-handler {
    server 127.0.0.1:9000;
    server unix:/run/php/php8.2-fpm.sock;
}

# Set the `immutable` cache control options only for assets with a cache busting `v` argument
map $arg_v $asset_immutable {
    "" "";
    default ", immutable";
}

server {
    listen 80;
    listen [::]:80;
    server_name $DOMAIN;

    # Prevent nginx HTTP Server Detection
    server_tokens off;

    # Enforce HTTPS
    return 301 https://$server_name$request_uri;
}

server {
    listen 443      ssl http2;
    listen [::]:443 ssl http2;
    server_name $DOMAIN;

    # Path to the root of your installation
    root /var/www/nextcloud;

    # Use Mozilla's guidelines for SSL/TLS settings
    # https://mozilla.github.io/server-side-tls/ssl-config-generator/
    ssl_certificate     /etc/letsencrypt/live/$DOMAIN/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/$DOMAIN/privkey.pem;

    # Prevent nginx HTTP Server Detection
    server_tokens off;

    # HSTS settings
    # WARNING: Only add the preload option once you read about
    # the consequences in https://hstspreload.org/. This option
    # will add the domain to a hardcoded list that is shipped
    # in all major browsers and getting removed from this list
    # could take several months.
    #add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload" always;

    # set max upload size and increase upload timeout:
    client_max_body_size 512M;
    client_body_timeout 300s;
    fastcgi_buffers 64 4K;

    # Enable gzip but do not remove ETag headers
    gzip on;
    gzip_vary on;
    gzip_comp_level 4;
    gzip_min_length 256;
    gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
    gzip_types application/atom+xml text/javascript application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/wasm application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;

    # Pagespeed is not supported by Nextcloud, so if your server is built
    # with the `ngx_pagespeed` module, uncomment this line to disable it.
    #pagespeed off;

    # The settings allows you to optimize the HTTP2 bandwidth.
    # See https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/
    # for tuning hints
    client_body_buffer_size 512k;

    # HTTP response headers borrowed from Nextcloud `.htaccess`
    add_header Referrer-Policy                   "no-referrer"       always;
    add_header X-Content-Type-Options            "nosniff"           always;
    add_header X-Frame-Options                   "SAMEORIGIN"        always;
    add_header X-Permitted-Cross-Domain-Policies "none"              always;
    add_header X-Robots-Tag                      "noindex, nofollow" always;
    add_header X-XSS-Protection                  "1; mode=block"     always;

    # Remove X-Powered-By, which is an information leak
    fastcgi_hide_header X-Powered-By;

    # Set .mjs and .wasm MIME types
    # Either include it in the default mime.types list
    # and include that list explicitly or add the file extension
    # only for Nextcloud like below:
    include mime.types;
    types {
        text/javascript mjs;
	application/wasm wasm;
    }

    # Specify how to handle directories -- specifying `/index.php$request_uri`
    # here as the fallback means that Nginx always exhibits the desired behaviour
    # when a client requests a path that corresponds to a directory that exists
    # on the server. In particular, if that directory contains an index.php file,
    # that file is correctly served; if it doesn't, then the request is passed to
    # the front-end controller. This consistent behaviour means that we don't need
    # to specify custom rules for certain paths (e.g. images and other assets,
    # `/updater`, `/ocs-provider`), and thus
    # `try_files $uri $uri/ /index.php$request_uri`
    # always provides the desired behaviour.
    index index.php index.html /index.php$request_uri;

    # Rule borrowed from `.htaccess` to handle Microsoft DAV clients
    location = / {
        if ( $http_user_agent ~ ^DavClnt ) {
            return 302 /remote.php/webdav/$is_args$args;
        }
    }

    location = /robots.txt {
        allow all;
        log_not_found off;
        access_log off;
    }

    # Make a regex exception for `/.well-known` so that clients can still
    # access it despite the existence of the regex rule
    # `location ~ /(\.|autotest|...)` which would otherwise handle requests
    # for `/.well-known`.
    location ^~ /.well-known {
        # The rules in this block are an adaptation of the rules
        # in `.htaccess` that concern `/.well-known`.

        location = /.well-known/carddav { return 301 /remote.php/dav/; }
        location = /.well-known/caldav  { return 301 /remote.php/dav/; }

        location /.well-known/acme-challenge    { try_files $uri $uri/ =404; }
        location /.well-known/pki-validation    { try_files $uri $uri/ =404; }

        # Let Nextcloud's API for `/.well-known` URIs handle all other
        # requests by passing them to the front-end controller.
        return 301 /index.php$request_uri;
    }

    # Rules borrowed from `.htaccess` to hide certain paths from clients
    location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/)  { return 404; }
    location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console)                { return 404; }

    # Ensure this block, which passes PHP files to the PHP process, is above the blocks
    # which handle static assets (as seen below). If this block is not declared first,
    # then Nginx will encounter an infinite rewriting loop when it prepends `/index.php`
    # to the URI, resulting in a HTTP 500 error response.
    location ~ \.php(?:$|/) {
        # Required for legacy support
        rewrite ^/(?!index|remote|public|cron|core\/ajax\/update|status|ocs\/v[12]|updater\/.+|ocs-provider\/.+|.+\/richdocumentscode(_arm64)?\/proxy) /index.php$request_uri;

        fastcgi_split_path_info ^(.+?\.php)(/.*)$;
        set $path_info $fastcgi_path_info;

        try_files $fastcgi_script_name =404;

        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $path_info;
        fastcgi_param HTTPS on;

        fastcgi_param modHeadersAvailable true;         # Avoid sending the security headers twice
        fastcgi_param front_controller_active true;     # Enable pretty urls
        fastcgi_pass php-handler;

        fastcgi_intercept_errors on;
        fastcgi_request_buffering off;

        fastcgi_max_temp_file_size 0;
    }

    # Serve static files
    location ~ \.(?:css|js|mjs|svg|gif|png|jpg|ico|wasm|tflite|map|ogg|flac)$ {
        try_files $uri /index.php$request_uri;
        # HTTP response headers borrowed from Nextcloud `.htaccess`
        add_header Cache-Control                     "public, max-age=15778463$asset_immutable";
        add_header Referrer-Policy                   "no-referrer"       always;
        add_header X-Content-Type-Options            "nosniff"           always;
        add_header X-Frame-Options                   "SAMEORIGIN"        always;
        add_header X-Permitted-Cross-Domain-Policies "none"              always;
        add_header X-Robots-Tag                      "noindex, nofollow" always;
        add_header X-XSS-Protection                  "1; mode=block"     always;
        access_log off;     # Optional: Don't log access to assets
    }

    location ~ \.woff2?$ {
        try_files $uri /index.php$request_uri;
        expires 7d;         # Cache-Control policy borrowed from `.htaccess`
        access_log off;     # Optional: Don't log access to assets
    }

    # Rule borrowed from `.htaccess`
    location /remote {
        return 301 /remote.php$request_uri;
    }

    location / {
        try_files $uri $uri/ /index.php$request_uri;
    }
}
EOF

sed -i "s/\$DOMAIN/$DOMAIN/g" /etc/nginx/sites-enabled/nextcloud

# NEXTCLOUD Installation
NC_ADMINPWD=$(openssl rand -base64 12)
NC_RELEASE="latest-27"
NC_DATA="/mnt/nc_data"
OCC="sudo -u www-data php /var/www/nextcloud/occ"
cd /var/www
wget https://download.nextcloud.com/server/releases/$NC_RELEASE.zip
unzip $NC_RELEASE.zip
rm -f $NC_RELEASE.zip
chown -R www-data:www-data nextcloud/ $NC_DATA

rm -f /var/www/nextcloud/config/config.php
$OCC maintenance:install --database "pgsql" --database-name "nextcloud" --database-user "nextcloud" --database-pass "$PG_PASSWORD" --admin-user "admin" --admin-pass "$NC_ADMINPWD" --data-dir "$NC_DATA"

$OCC config:system:set trusted_domains 0 --value="$DOMAIN"
$OCC config:system:set overwrite.cli.url --value "https://$DOMAIN"
$OCC config:system:set default_phone_region --value "de_DE"