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[friendica.git] / static / defaults.config.php

<?php
/**
 * @copyright Copyright (C) 2010-2023, the Friendica project
 *
 * @license GNU AGPL version 3 or any later version
 *
 * 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 <https://www.gnu.org/licenses/>.
 *
 * This file declares the default values for the base config of Friendica.
 *
 * These configuration values aren't accessible from the admin settings page and custom values must be set in config/local.config.php
 *
 * Please don't edit this file directly as its content may change in the upcoming versions.
 *
 */

return [
        'database' => [
                // host (String)
                // Hostname or IP address of the database server.
                // Can contain the port number with the syntax "hostname:port".
                'hostname' => '',

                // port (Integer)
                // Port of the database server.
                // Can be used instead of adding a port number to the hostname
                'port' => null,

                // socket (String)
                // Socket of the database server.
                // Can be used instead of adding a socket location to the hostname
                'socket' => '',

                // user (String)
                // Database username. Please don't use "root".
                'username' => '',

                // pass (String)
                // Database user password. Please don't use empty passwords.
                'password' => '',

                // base (String)
                // Database name.
                'database' => '',

                // charset (String)
                // Database connection charset. Changing this value will likely corrupt special characters.
                'charset' => 'utf8mb4',

                // pdo_emulate_prepares (Boolean)
                // If enabled, the builtin emulation for prepared statements is used.
                // This can be used as a workaround for the database error "Prepared statement needs to be re-prepared".
                'pdo_emulate_prepares' => true,

                // disable_pdo (Boolean)
                // PDO is used by default (if available). Otherwise, MySQLi will be used.
                'disable_pdo' => false,

                // persistent (Boolean)
                // This controls if the system should use persistent connections or not.
                // Persistent connections increase the performance.
                // On the other hand the number of open connections are higher,
                // this will most likely increase the system load.
                'persistent' => false,
        ],
        'config' => [
                // admin_email (Comma-separated list)
                // In order to perform system administration via the admin panel,
                // this must precisely match the email address of the person logged in.
                'admin_email' => '',

                // admin_nickname (String)
                // Nickname of the main admin user, used if there are more than one admin user defined in config => admin_email.
                'admin_nickname' => '',

                // max_import_size (Integer)
                // Maximum body size of DFRN and Mail messages in characters. 0 is unlimited.
                'max_import_size' => 200000,

                // php_path (String)
                // Location of PHP command line processor.
                'php_path' => 'php',
        ],
        'system' => [
                // adjust_poll_frequency (Boolean)
                // Automatically detect and set the best feed poll frequency.
                'adjust_poll_frequency' => false,

                // allowed_link_protocols (Array)
                // Allowed protocols in links URLs, add at your own risk. http(s) is always allowed.
                'allowed_link_protocols' => ['ftp://', 'ftps://', 'mailto:', 'cid:', 'gopher://'],

                // always_show_preview (Boolean)
                // Only show small preview pictures.
                'always_show_preview' => false,

                // ap_always_bcc (Boolean)
                // Addresses non-mentioned ActivityPub receivers by BCC instead of CC. Increases privacy, decreases performance.
                'ap_always_bcc' => false,

                // archival_days (Integer)
                // Number of days that we try to deliver content before we archive a contact.
                'archival_days' => 32,

                // auth_cookie_lifetime (Integer)
                // Number of days that should pass without any activity before a user who
                // chose "Remember me" when logging in is considered logged out.
                'auth_cookie_lifetime' => 7,

                // avatar_cache (Boolean)
                // Cache avatar pictures as files (experimental)
                'avatar_cache' => false,

                // avatar_cache_path (String)
                // File path to the avatar cache. Default is /(your basepath)/avatar/
                // The value has to be an absolute path and has to end with a "/"
                'avatar_cache_path' => '',

                // avatar_cache_url (String)
                // Base URL of the avatar cache. Default is http(s)://(your hostname)/avatar/
                // The value has to start with the scheme and end with a "/"
                'avatar_cache_url' => '',

                // big_emojis (Boolean)
                // Display "Emoji Only" posts in big.
                'big_emojis' => false,

                // bulk_delivery (Boolean)
                // Delivers AP messages in a bulk (experimental)
                'bulk_delivery' => false,

                // block_local_dir (Boolean)
                // Deny public access to the local user directory.
                'block_local_dir' => false,

                // blocked_tags (String)
                // Comma separated list of hashtags that shouldn't be displayed in the trending tags
                'blocked_tags' => '',

                // community_no_sharer (Boolean)
                // Don't display sharing accounts on the global community
                'community_no_sharer' => false,

                // contact_update_limit (Integer)
                // How many contacts should be checked at a time?
                'contact_update_limit' => 100,

                // cron_interval (Integer)
                // Minimal period in minutes between two calls of the "Cron" worker job.
                'cron_interval' => 5,

                // cache_driver (database|memcache|memcached|redis|apcu)
                // Whether to use Memcache, Memcached, Redis or APCu to store temporary cache.
                'cache_driver' => 'database',

                // decoupled_receiver (Boolean)
                // Decouple incoming AP posts by doing the processing in the background.
                'decoupled_receiver' => false,

                // distributed_cache_driver (database|memcache|memcached|redis)
                // Whether to use database, Memcache, Memcached or Redis as a distributed cache.
                'distributed_cache_driver' => 'database',

                // fetch_parents (Boolean)
                // Fetch missing parent posts
                'fetch_parents' => true,

                // config_adapter (jit|preload)
                // Allow to switch the configuration adapter to improve performances at the cost of memory consumption.
                'config_adapter' => 'jit',

                // curl_range_bytes (Integer)
                // Maximum number of bytes that should be fetched. Default is 0, which mean "no limit".
                'curl_range_bytes' => 0,

                // crawl_permit_period (Integer)
                // Period in seconds between allowed searches when the number of free searches is reached and "permit_crawling" is activated.
                'crawl_permit_period' => 60,

                // db_log (Path)
                // Name of a logfile to log slow database queries.
                'db_log' => '',

                // db_log_index (Path)
                // Name of a logfile to log queries with bad indexes.
                'db_log_index' => '',

                // db_log_index_watch (Comma-separated list)
                // Watchlist of indexes to watch.
                'db_log_index_watch' => '',

                // db_log_index_denylist (Comma-separated list)
                // Deny list of indexes that shouldn't be watched.
                'db_log_index_denylist' => '',

                // db_loglimit (Integer)
                // If a database call lasts longer than this value in seconds it is logged.
                // Inactive if system => db_log is empty.
                'db_loglimit' => 10,

                // db_loglimit_index (Integer)
                // Number of index rows needed to be logged for indexes on the watchlist. 0 to disable.
                'db_loglimit_index' => 0,

                // db_loglimit_index_high (Integer)
                // Number of index rows to be logged anyway (for any index). 0 to disable.
                'db_loglimit_index_high' => 0,

                // dbclean_expire_conversation (Integer)
                // When DBClean is enabled, any entry in the conversation table will be deleted after this many days.
                // This data is used for ActivityPub, so it shouldn't be lower than the average duration of a discussion.
                'dbclean_expire_conversation' => 90,

                // dbclean-expire-limit (Integer)
                // This defines the number of items that are to be deleted in a single call.
                // Reduce this value when you are getting lock issues.
                // A value of 0 disables the deletion process.
                'dbclean-expire-limit' => 1000,

                // daemon_watchdog (Boolean)
                // Enable regular checking if the daemon is running.
                // If it is not running and hadn't been terminated normally, it will be started automatically.
                'daemon_watchdog' => false,

                // delete_sleeping_processes (Boolean)
                // Periodically delete waiting database processes.
                'delete_sleeping_processes' => false,

                // delete-blocked-servers (Boolean)
                // Delete blocked servers if there are no foreign key violations.
                'delete-blocked-servers' => false,

                // dice_profiler_threshold (Float)
                // For profiling Dice class creation (0 = disabled, >0 = seconds threshold for profiling)
                'dice_profiler_threshold' => 0.5,

                // diaspora_test (Boolean)
                // For development only. Disables the message transfer.
                'diaspora_test' => false,

                // disable_email_validation (Boolean)
                // Disables the check if a mail address is in a valid format and can be resolved via DNS.
                'disable_email_validation' => false,

                // disable_implicit_mentions (Boolean) since 2019.03
                // Implicit mentions are mentions in the body of replies that are redundant in a thread-enabled system like Friendica.
                // This config key disables the gathering of implicit mentions in incoming and outgoing posts.
                // Also disables the default automatic removal of implicit mentions from the body of incoming posts.
                // Also disables the default automatic addition of implicit mentions in the body of outgoing posts.
                // Disabling implicit mentions also affects the "explicit_mentions" additional feature by limiting it
                // to the replied-to post author mention in the comment boxes.
                'disable_implicit_mentions' => false,

                // disable_url_validation (Boolean)
                // Disables the DNS lookup of a URL.
                'disable_url_validation' => false,

                // disable_password_exposed (Boolean)
                // Disable the exposition check against the remote haveibeenpwned API on password change.
                'disable_password_exposed' => false,

                // disable_polling (Boolean)
                // Disable the polling of DFRN and OStatus contacts through onepoll.php.
                'disable_polling' => false,

                // display_resharer (Boolean)
                // Display the first resharer as icon and text on a reshared item.
                'display_resharer' => false,

                // dlogfile (Path)
                // location of the developer log file.
                'dlogfile' => '',

                // dlogip (String)
                // restricts develop log writes to requests originating from this IP address.
                'dlogip' => '',

                // emoji_activities (Boolean)
                // Display received activities (like, dislike, reshare) as emojis
                'emoji_activities' => false,

                // expire-notify-priority (integer)
                // Priority for the expiry notification
                'expire-notify-priority' => Friendica\Core\Worker::PRIORITY_LOW,

                // fetch_by_worker (Boolean)
                // Fetch missing posts via a background process
                'fetch_by_worker' => false,

                // fetch_featured_posts (Boolean)
                // Fetch featured posts from all contacts
                'fetch_featured_posts' => false,

                // free_crawls (Integer)
                // Number of "free" searches when system => permit_crawling is enabled.
                'free_crawls' => 10,

                // groupedit_image_limit (Integer)
                // Number of contacts at which the group editor should switch from display the profile pictures of the contacts to only display the names.
                // This can alternatively be set on a per-account basis in the pconfig table.
                'groupedit_image_limit' => 400,

                // gserver_update_limit (Integer)
                // How many servers should be checked at a time?
                'gserver_update_limit' => 100,

                // hsts (Boolean)
                // Enables the sending of HTTP Strict Transport Security headers.
                'hsts' => false,

                // ignore_cache (Boolean)
                // For development only. Disables the item cache.
                'ignore_cache' => false,

                // insecure_imap (Boolean)
                // If enabled, users are allowed to connect to their IMAP servers unencrypted.
                // For security reasons this is disabled by default.
                'insecure_imap' => false,

                // instances_social_key (String)
                // Key to the API of https://instances.social which retrieves data about mastodon servers.
                // See https://instances.social/api/token to get an API key.
                'instances_social_key' => '',

                // ipv4_resolve (Boolean)
                // Resolve IPV4 addresses only. Don't resolve to IPV6.
                'ipv4_resolve' => false,

                // invitation_only (Boolean)
                // If set true registration is only possible after a current member of the node has sent an invitation.
                'invitation_only' => false,

                // itemspage_network (Integer)
                // default number of items per page in stream pages (network, community, profile/contact statuses, search)
                'itemspage_network' => 40,

                // itemspage_network_mobile (Integer)
                // default number of items per page in stream pages (network, community, profile/contact statuses, search)
                // on detected mobile devices
                'itemspage_network_mobile' => 20,

                // jpeg_quality (Integer)
                //
                // Lower numbers save space at cost of image detail
                // where n is between 1 and 100, and with very poor results below about 50
                'jpeg_quality' => 100,

                // like_no_comment (Boolean)
                // Don't update the "commented" value of an item when it is liked.
                'like_no_comment' => false,

                // local_block (Boolean)
                // Used in conjunction with "block_public".
                'local_block' => false,

                // local_search (Boolean)
                // Blocks search for users who are not logged in to prevent crawlers from blocking your system.
                'local_search' => false,

                // local_tags (Boolean)
                // If activated, all hashtags will point to the local server.
                'local_tags' => false,

                // lock_driver (semaphore|database|memcache|memcached|redis|apcu)
                // Whether to use semaphores, the database, Memcache, Memcached, Redis or APCu to handle locks.
                // Default is auto detection which tries semaphores first, then falls back to the cache driver.
                'lock_driver' => '',

                // logger_config (String)
                // Sets the logging adapter of Friendica globally (monolog, syslog, stream)
                'logger_config' => 'stream',

                // syslog flags (Integer)
                // Sets the syslog flags in case 'logger_config' is set to 'syslog'
                'syslog_flags' => LOG_CONS | LOG_PID | LOG_ODELAY,

                // syslog flags (Integer)
                // Sets the syslog facility in case 'logger_config' is set to 'syslog'
                'syslog_facility' => LOG_USER,

                // maintenance_start (String)
                // Start of the window for the daily maintenance cron call.
                // The system timezone is used when no timezone is defined here.
                'maintenance_start' => '01:00 +00:00',

                // maintenance_end (String)
                // End of the window for the daily maintenance cron call
                // The system timezone is used when no timezone is defined here.
                'maintenance_end' => '03:00 +00:00',

                // max_batch_queue (Integer)
                // Maximum number of batched queue items for a single contact before subsequent messages are discarded.
                'max_batch_queue' => 1000,

                // max_connections (Integer)
                // The maximum number of database connections which can be in use before the worker process is deferred to its next interval.
                // When the system can't detect the maximum numbers of connection then this value can be used. Use 0 for auto-detection.
                'max_connections' => 0,

                // max_connections_level (Integer 0-100)
                // The maximum percentage of connections that are allowed to let the worker start.
                'max_connections_level' => 75,

                // max_contact_queue (Integer)
                // Maximum number of queue items for a single contact before subsequent messages are discarded.
                'max_contact_queue' => 500,

                // max_csv_file_size (Integer)
                // When uploading a CSV with account addresses to follow
                // in the user settings, this controls the maximum file
                // size of the upload file.
                'max_csv_file_size' => 30720,

                // max_feed_items (Integer)
                // Maximum number of feed items that are fetched and processed. For unlimited items set to 0.
                'max_feed_items' => 20,

                // max_image_length (Integer)
                // An alternate way of limiting picture upload sizes.
                // Specify the maximum pixel length that pictures are allowed to be (for non-square pictures, it will apply to the longest side).
                // Pictures longer than this length will be resized to be this length (on the longest side, the other side will be scaled appropriately).
                // If you don't want to set a maximum length, set to -1.
                'max_image_length' => -1,

                // max_likers (Integer)
                // Maximum number of "people who like (or don't like) this" that we will list by name
                'max_likers' => 75,

                // max_processes_backend (Integer)
                // Maximum number of concurrent database processes for background tasks.
                'max_processes_backend' => 5,

                // max_processes_frontend (Integer)
                // Maximum number of concurrent database processes for foreground tasks.
                'max_processes_frontend' => 20,

                // max_recursion_depth (Integer)
                // Maximum recursion depth when fetching posts until the job is delegated to a worker task or finished.
                'max_recursion_depth' => 50,

                // maximagesize (Integer)
                // Maximum size in bytes of an uploaded photo.
                'maximagesize' => 800000,

                // memcache_host (String)
                // Host name of the memcache daemon.
                'memcache_host' => '127.0.0.1',

                // memcache_port (Integer)
                // Port number of the memcache daemon.
                'memcache_port' => 11211,

                // memcached_hosts (Array)
                // Array of Memcached servers info [host, port(, weight)], see Memcached::addServers.
                'memcached_hosts' => [
                        ['127.0.0.1', '11211'],
                ],

                // min_poll_interval (Integer)
                // minimal distance in minutes between two polls for a contact. Reasonable values are between 1 and 59.
                'min_poll_interval' => 15,

                // minimum_posting_interval (Integer)
                // Minimum interval between two feed posts per user
                'minimum_posting_interval' => 0,

                // no_count (Boolean)
                // Don't do count calculations (currently only when showing photo albums).
                'no_count' => false,

                // no_oembed (Boolean)
                // Don't use OEmbed to fetch more information about a link.
                'no_oembed' => false,

                // no_redirect_list (Array)
                // List of domains where HTTP redirects should be ignored.
                'no_redirect_list' => [],

                // no_smilies (Boolean)
                // Don't show smilies.
                'no_smilies' => false,

                // optimize_all_tables (Boolean)
                // Optimizes all tables instead of only tables like workerqueue or the cache
                'optimize_all_tables' => false,

                // paranoia (Boolean)
                // Log out users if their IP address changed.
                'paranoia' => false,

                // permit_crawling (Boolean)
                // Restricts the search for not logged-in users to one search per minute.
                'permit_crawling' => false,

                // pidfile (Path)
                // Daemon pid file path. For example: pidfile = /path/to/daemon.pid
                'pidfile' => '',

                // png_quality (Integer)
                // Sets the ImageMagick compression level for PNG images. Values range from 0 (uncompressed) to 9 (most compressed).
                'png_quality' => 8,

                // process_view (Boolean)
                // Process the "View" activity that is used by Peertube. View activities are displayed, when "emoji_activities" are enabled.
                'process_view' => false,

                // profiler (Boolean)
                // Enable internal timings to help optimize code. Needed for "rendertime" addon.
                'profiler' => false,

                // pushpoll_frequency (Integer)
                // Frequency of contact poll for subhub contact using the DFRM or OStatus network.
                // Available values:
                // - 5 = every month
                // - 4 = every week
                // - 3 = every day
                // - 2 = twice a day
                // - 1 = every hour
                // - 0 = every minute
                'pushpoll_frequency' => 3,

                // redis_host (String)
                // Host name of the redis daemon.
                'redis_host' => '127.0.0.1',

                // redis_port (String)
                // Port number of the redis daemon.
                'redis_port' => 6379,

                // redis_db (Integer)
                // The sub-database of redis (0 - 15 possible sub-databases)
                'redis_db' => 0,

                // redis_password (String)
                // The authentication password for the redis database
                'redis_password' => null,

                // redistribute_activities (Boolean)
                // Redistribute incoming activities via ActivityPub
                'redistribute_activities' => true,

                // relay_deny_languages (Array)
                // Array of languages (two digit format) that are rejected.
                'relay_deny_languages' => [],

                // relay_deny_undetected_language (Boolean)
                // Deny undetected languages
                'relay_deny_undetected_language' => false,

                // session_handler (database|cache|native)
                // Whether to use Cache to store session data or to use PHP native session storage.
                'session_handler' => 'database',

                // remote_avatar_lookup (Boolean)
                // Perform an avatar lookup via the activated services for remote contacts
                'remote_avatar_lookup' => false,

                // remove_multiplicated_lines (Boolean)
                // If enabled, multiple linefeeds in items are stripped to a single one.
                'remove_multiplicated_lines' => false,

                // runtime_ignore (Array)
                // List of ignored commands for the runtime logging.
                'runtime_ignore' => [],

                // runtime_loglimit (Integer)
                // The runtime is logged, When the program execution time is higher than this value.
                'runtime_loglimit' => 0,

                // sendmail_params (Boolean)
                // Normal sendmail command parameters will be added when the PHP mail() function is called for sending e-mails.
                // This ensures the Sender Email address setting is applied to the message envelope rather than the host's default address.
                // Set to false if your non-sendmail agent is incompatible, or to restore old behavior of using the host address.
                'sendmail_params' => true,

                // set_creation_date (Boolean)
                // When enabled, the user can enter a creation date when composing a post.
                'set_creation_date' => false,

                // show_global_community_hint (Boolean)
                // When the global community page is enabled, use this option to display a hint above the stream, that this is a collection of all public top-level postings that arrive at your node.
                'show_global_community_hint' => false,

                // show_received (Boolean)
                // Show the received date along with the post creation date
                'show_received' => true,

                // show_received_seconds (Integer)
                // Display the received date when the difference between received and created is higher than this.
                'show_received_seconds' => 500,

                // show_unsupported_addons (Boolean)
                // Show all addons including the unsupported ones.
                'show_unsupported_addons' => false,

                // show_unsupported_themes (Boolean)
                // Show all themes including the unsupported ones.
                'show_unsupported_themes' => false,

                // throttle_limit_day (Integer)
                // Maximum number of posts that a user can send per day with the API. 0 to disable daily throttling.
                'throttle_limit_day' => 0,

                // throttle_limit_week (Integer)
                // Maximum number of posts that a user can send per week with the API. 0 to disable weekly throttling.
                'throttle_limit_week' => 0,

                // throttle_limit_month (Integer)
                // Maximum number of posts that a user can send per month with the API. 0 to disable monthly throttling.
                'throttle_limit_month' => 0,

                // transmit_pending_events (Boolean)
                // Transmit pending events upon accepted contact request for forums
                'transmit_pending_events' => false,

                // update_active_contacts (Boolean)
                // When activated, only public contacts will be activated regularly that are used for example in items or tags.
                'update_active_contacts' => false,

                // username_min_length (Integer)
                // The minimum character length a username can be.
                // This length is checked once the username has been trimmed and multiple spaces have been collapsed into one.
                // Minimum for this config value is 1. Maximum is 64 as the resulting profile URL mustn't be longer than 255 chars.
                'username_min_length' => 3,

                // username_max_length (Integer)
                // The maximum character length a username can be.
                // This length is checked once the username has been trimmed and multiple spaces have been collapsed into one.
                // Minimum for this config value is 1. Maximum is 64 as the resulting profile URL mustn't be longer than 255 chars.
                'username_max_length' => 48,

                // worker_cooldown (Float)
                // Cooldown period in seconds before each worker function call.
                'worker_cooldown' => 0,

                // worker_debug (Boolean)
                // If enabled, it prints out the number of running processes split by priority.
                'worker_debug' => false,

                // worker_fetch_limit (Integer)
                // Number of worker tasks that are fetched in a single query.
                'worker_fetch_limit' => 1,

                // worker_fork (Boolean)
                // Experimental setting. Use pcntl_fork to spawn a new worker process.
                // Does not work when "worker_multiple_fetch" is enabled (Needs more testing)
                'worker_fork' => false,

                // worker_jpm (Boolean)
                // If enabled, it prints out the jobs per minute.
                'worker_jpm' => false,

                // worker_jpm_range (String)
                // List of minutes for the jobs per minute (JPM) calculation
                'worker_jpm_range' => '1, 10, 60',

                // worker_load_cooldown (Integer)
                // Maximum load that causes a cooldown before each worker function call.
                'worker_load_cooldown' => 0,

                // worker_load_exponent (Integer)
                // Default 3, which allows only 25% of the maximum worker queues when server load reaches around 37% of maximum load.
                // For a linear response where 25% of worker queues are allowed at 75% of maximum load, set this to 1.
                // Setting 0 would allow maximum worker queues at all times, which is not recommended.
                'worker_load_exponent' => 3,

                // worker_max_duration (Array)
                // Maximum runtime per priority. Worker processes that exceed this runtime will be terminated.
                'worker_max_duration' => [
                        Friendica\Core\Worker::PRIORITY_CRITICAL   => 720,
                        Friendica\Core\Worker::PRIORITY_HIGH       => 10,
                        Friendica\Core\Worker::PRIORITY_MEDIUM     => 60,
                        Friendica\Core\Worker::PRIORITY_LOW        => 180,
                        Friendica\Core\Worker::PRIORITY_NEGLIGIBLE => 720
                ],

                // worker_processes_cooldown (Integer)
                // Maximum number per processes that causes a cooldown before each worker function call.
                'worker_processes_cooldown' => 0,

                // worker_multiple_fetch (Boolean)
                // When activated, the worker fetches jobs for multiple workers (not only for itself).
                // This is an experimental setting without knowing the performance impact.
                // Does not work when "worker_fork" is enabled (Needs more testing)
                'worker_multiple_fetch' => false,

                // worker_defer_limit (Integer)
                // Per default the systems tries delivering for 15 times before dropping it.
                'worker_defer_limit' => 15,

                // xrd_timeout (Integer)
                // Timeout in seconds for fetching the XRD links and other requests with an expected shorter timeout
                'xrd_timeout' => 20,
        ],
        'proxy' => [
                // forwarded_for_headers (String)
                // A comma separated list of all allowed header values to retrieve the real client IP
                // The headers are evaluated in order.
                'forwarded_for_headers' => 'HTTP_X_FORWARDED_FOR',

                // trusted_proxies (String)
                // A comma separated list of all trusted proxies, which will get skipped during client IP retrieval
                // IP ranges and CIDR notations are allowed
                'trusted_proxies' => '',
        ],
        'experimental' => [
                // exp_themes (Boolean)
                // Show experimental themes in user settings.
                'exp_themes' => false,
        ],
        'theme' => [
                // hide_eventlist (Boolean)
                // Don't show the birthdays and events on the profile and network page.
                'hide_eventlist' => false,
        ],
        'jabber' => [
                // debug (Boolean)
                // Enable debug level for the jabber account synchronisation.
                'debug' => false,
                // lockpath (Path)
                // Must be writable by the ejabberd process. if set then it will prevent the running of multiple processes.
                'lockpath' => '',
        ],
        'diaspora' => [
                // native_photos (Boolean)
                // If enabled, photos to Diaspora will be transmitted via the "photo" element instead of embedding them to the body.
                // This is some visual improvement over the embedding but comes with the cost of losing accessibility.
                // Is is disabled by default until Diaspora eventually will work on issue https://github.com/diaspora/diaspora/issues/8297
                'native_photos' => false,
        ],
        'debug' => [
                // ap_inbox_log (Boolean)
                // Logs every call to /inbox as a JSON file in Friendica's temporary directory
                'ap_inbox_log' => false,

                // ap_inbox_store_untrusted (Boolean)
                // Store untrusted content in the inbox entries
                'ap_inbox_store_untrusted' => false,

                // ap_log_unknown (Boolean)
                // Logs every unknown ActivityPub activity
                'ap_log_unknown' => false,

                // ap_log_failure (Boolean)
                // Logs every ActivityPub activity that couldn't be compacted
                'ap_log_failure' => false,

                // store_source (Boolean)
                // Store the source of any post that arrived
                'store_source' => false,
        ],
        'smarty3' => [
                // config_dir (String)
                // Base working directory for the templating engine, must be writeable by the webserver user
                'config_dir' => 'view/smarty3',

                // use_sub_dirs (Boolean)
                // By default the template cache is stored in several subdirectories.
                'use_sub_dirs' => true,
        ],
];