<?php

/**

 * Sets up the default filters and actions for most

 * of the WordPress hooks.

 *

 * If you need to remove a default hook, this file will

 * give you the priority for which to use to remove the

 * hook.

 *

 * Not all of the default hooks are found in default-filters.php

 *

 * @package WordPress

 */

// Strip, trim, kses, special chars for string saves

foreach ( array( 'pre_term_name', 'pre_comment_author_name', 'pre_link_name', 'pre_link_target', 'pre_link_rel', 'pre_user_display_name', 'pre_user_first_name', 'pre_user_last_name', 'pre_user_nickname' ) as $filter ) {

	add_filter( $filter, 'sanitize_text_field' );

	add_filter( $filter, 'wp_filter_kses' );

	add_filter( $filter, '_wp_specialchars', 30 );

}

// Strip, kses, special chars for string display

foreach ( array( 'term_name', 'comment_author_name', 'link_name', 'link_target', 'link_rel', 'user_display_name', 'user_first_name', 'user_last_name', 'user_nickname' ) as $filter ) {

	if ( is_admin() ) {

		// These are expensive. Run only on admin pages for defense in depth.

		add_filter( $filter, 'sanitize_text_field' );

		add_filter( $filter, 'wp_kses_data' );

	}

	add_filter( $filter, '_wp_specialchars', 30 );

}

// Kses only for textarea saves

foreach ( array( 'pre_term_description', 'pre_link_description', 'pre_link_notes', 'pre_user_description' ) as $filter ) {

	add_filter( $filter, 'wp_filter_kses' );

}

// Kses only for textarea admin displays

if ( is_admin() ) {

	foreach ( array( 'term_description', 'link_description', 'link_notes', 'user_description' ) as $filter ) {

		add_filter( $filter, 'wp_kses_data' );

	}

	add_filter( 'comment_text', 'wp_kses_post' );

}

// Email saves

foreach ( array( 'pre_comment_author_email', 'pre_user_email' ) as $filter ) {

	add_filter( $filter, 'trim' );

	add_filter( $filter, 'sanitize_email' );

	add_filter( $filter, 'wp_filter_kses' );

}

// Email admin display

foreach ( array( 'comment_author_email', 'user_email' ) as $filter ) {

	add_filter( $filter, 'sanitize_email' );

	if ( is_admin() ) {

		add_filter( $filter, 'wp_kses_data' );

	}

}

// Save URL

foreach ( array(

	'pre_comment_author_url',

	'pre_user_url',

	'pre_link_url',

	'pre_link_image',

	'pre_link_rss',

	'pre_post_guid',

) as $filter ) {

	add_filter( $filter, 'wp_strip_all_tags' );

	add_filter( $filter, 'esc_url_raw' );

	add_filter( $filter, 'wp_filter_kses' );

}

// Display URL

foreach ( array( 'user_url', 'link_url', 'link_image', 'link_rss', 'comment_url', 'post_guid' ) as $filter ) {

	if ( is_admin() ) {

		add_filter( $filter, 'wp_strip_all_tags' );

	}

	add_filter( $filter, 'esc_url' );

	if ( is_admin() ) {

		add_filter( $filter, 'wp_kses_data' );

	}

}

// Slugs

add_filter( 'pre_term_slug', 'sanitize_title' );

add_filter( 'wp_insert_post_data', '_wp_customize_changeset_filter_insert_post_data', 10, 2 );

// Keys

foreach ( array( 'pre_post_type', 'pre_post_status', 'pre_post_comment_status', 'pre_post_ping_status' ) as $filter ) {

	add_filter( $filter, 'sanitize_key' );

}

// Mime types

add_filter( 'pre_post_mime_type', 'sanitize_mime_type' );

add_filter( 'post_mime_type', 'sanitize_mime_type' );

// Meta

add_filter( 'register_meta_args', '_wp_register_meta_args_whitelist', 10, 2 );

// Post meta

add_action( 'added_post_meta', 'wp_cache_set_posts_last_changed' );

add_action( 'updated_post_meta', 'wp_cache_set_posts_last_changed' );

add_action( 'deleted_post_meta', 'wp_cache_set_posts_last_changed' );

// Term meta

add_action( 'added_term_meta', 'wp_cache_set_terms_last_changed' );

add_action( 'updated_term_meta', 'wp_cache_set_terms_last_changed' );

add_action( 'deleted_term_meta', 'wp_cache_set_terms_last_changed' );

add_filter( 'get_term_metadata', 'wp_check_term_meta_support_prefilter' );

add_filter( 'add_term_metadata', 'wp_check_term_meta_support_prefilter' );

add_filter( 'update_term_metadata', 'wp_check_term_meta_support_prefilter' );

add_filter( 'delete_term_metadata', 'wp_check_term_meta_support_prefilter' );

add_filter( 'get_term_metadata_by_mid', 'wp_check_term_meta_support_prefilter' );

add_filter( 'update_term_metadata_by_mid', 'wp_check_term_meta_support_prefilter' );

add_filter( 'delete_term_metadata_by_mid', 'wp_check_term_meta_support_prefilter' );

add_filter( 'update_term_metadata_cache', 'wp_check_term_meta_support_prefilter' );

// Comment meta

add_action( 'added_comment_meta', 'wp_cache_set_comments_last_changed' );

add_action( 'updated_comment_meta', 'wp_cache_set_comments_last_changed' );

add_action( 'deleted_comment_meta', 'wp_cache_set_comments_last_changed' );

// Places to balance tags on input

foreach ( array( 'content_save_pre', 'excerpt_save_pre', 'comment_save_pre', 'pre_comment_content' ) as $filter ) {

	add_filter( $filter, 'convert_invalid_entities' );

	add_filter( $filter, 'balanceTags', 50 );

}

// Add proper rel values for links with target.

add_action( 'init', 'wp_init_targeted_link_rel_filters' );

// Format strings for display.

foreach ( array( 'comment_author', 'term_name', 'link_name', 'link_description', 'link_notes', 'bloginfo', 'wp_title', 'widget_title' ) as $filter ) {

	add_filter( $filter, 'wptexturize' );

	add_filter( $filter, 'convert_chars' );

	add_filter( $filter, 'esc_html' );

}

// Format WordPress

foreach ( array( 'the_content', 'the_title', 'wp_title' ) as $filter ) {

	add_filter( $filter, 'capital_P_dangit', 11 );

}

add_filter( 'comment_text', 'capital_P_dangit', 31 );

// Format titles

foreach ( array( 'single_post_title', 'single_cat_title', 'single_tag_title', 'single_month_title', 'nav_menu_attr_title', 'nav_menu_description' ) as $filter ) {

	add_filter( $filter, 'wptexturize' );

	add_filter( $filter, 'strip_tags' );

}

// Format text area for display.

foreach ( array( 'term_description', 'get_the_post_type_description' ) as $filter ) {

	add_filter( $filter, 'wptexturize' );

	add_filter( $filter, 'convert_chars' );

	add_filter( $filter, 'wpautop' );

	add_filter( $filter, 'shortcode_unautop' );

}

// Format for RSS

add_filter( 'term_name_rss', 'convert_chars' );

// Pre save hierarchy

add_filter( 'wp_insert_post_parent', 'wp_check_post_hierarchy_for_loops', 10, 2 );

add_filter( 'wp_update_term_parent', 'wp_check_term_hierarchy_for_loops', 10, 3 );

// Display filters

add_filter( 'the_title', 'wptexturize' );

add_filter( 'the_title', 'convert_chars' );

add_filter( 'the_title', 'trim' );

add_filter( 'the_content', 'do_blocks', 9 );

add_filter( 'the_content', 'wptexturize' );

add_filter( 'the_content', 'convert_smilies', 20 );

add_filter( 'the_content', 'wpautop' );

add_filter( 'the_content', 'shortcode_unautop' );

add_filter( 'the_content', 'prepend_attachment' );

add_filter( 'the_content', 'wp_make_content_images_responsive' );

add_filter( 'the_excerpt', 'wptexturize' );

add_filter( 'the_excerpt', 'convert_smilies' );

add_filter( 'the_excerpt', 'convert_chars' );

add_filter( 'the_excerpt', 'wpautop' );

add_filter( 'the_excerpt', 'shortcode_unautop' );

add_filter( 'get_the_excerpt', 'wp_trim_excerpt', 10, 2 );

add_filter( 'the_post_thumbnail_caption', 'wptexturize' );

add_filter( 'the_post_thumbnail_caption', 'convert_smilies' );

add_filter( 'the_post_thumbnail_caption', 'convert_chars' );

add_filter( 'comment_text', 'wptexturize' );

add_filter( 'comment_text', 'convert_chars' );

add_filter( 'comment_text', 'make_clickable', 9 );

add_filter( 'comment_text', 'force_balance_tags', 25 );

add_filter( 'comment_text', 'convert_smilies', 20 );

add_filter( 'comment_text', 'wpautop', 30 );

add_filter( 'comment_excerpt', 'convert_chars' );

add_filter( 'list_cats', 'wptexturize' );

add_filter( 'wp_sprintf', 'wp_sprintf_l', 10, 2 );

add_filter( 'widget_text', 'balanceTags' );

add_filter( 'widget_text_content', 'capital_P_dangit', 11 );

add_filter( 'widget_text_content', 'wptexturize' );

add_filter( 'widget_text_content', 'convert_smilies', 20 );

add_filter( 'widget_text_content', 'wpautop' );

add_filter( 'widget_text_content', 'shortcode_unautop' );

add_filter( 'widget_text_content', 'do_shortcode', 11 ); // Runs after wpautop(); note that $post global will be null when shortcodes run.

add_filter( 'date_i18n', 'wp_maybe_decline_date' );

// RSS filters

add_filter( 'the_title_rss', 'strip_tags' );

add_filter( 'the_title_rss', 'ent2ncr', 8 );

add_filter( 'the_title_rss', 'esc_html' );

add_filter( 'the_content_rss', 'ent2ncr', 8 );

add_filter( 'the_content_feed', 'wp_staticize_emoji' );

add_filter( 'the_content_feed', '_oembed_filter_feed_content' );

add_filter( 'the_excerpt_rss', 'convert_chars' );

add_filter( 'the_excerpt_rss', 'ent2ncr', 8 );

add_filter( 'comment_author_rss', 'ent2ncr', 8 );

add_filter( 'comment_text_rss', 'ent2ncr', 8 );

add_filter( 'comment_text_rss', 'esc_html' );

add_filter( 'comment_text_rss', 'wp_staticize_emoji' );

add_filter( 'bloginfo_rss', 'ent2ncr', 8 );

add_filter( 'the_author', 'ent2ncr', 8 );

add_filter( 'the_guid', 'esc_url' );

// Email filters

add_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );

// Mark site as no longer fresh

foreach ( array( 'publish_post', 'publish_page', 'wp_ajax_save-widget', 'wp_ajax_widgets-order', 'customize_save_after' ) as $action ) {

	add_action( $action, '_delete_option_fresh_site', 0 );

}

// Misc filters

add_filter( 'option_ping_sites', 'privacy_ping_filter' );

add_filter( 'option_blog_charset', '_wp_specialchars' ); // IMPORTANT: This must not be wp_specialchars() or esc_html() or it'll cause an infinite loop

add_filter( 'option_blog_charset', '_canonical_charset' );

add_filter( 'option_home', '_config_wp_home' );

add_filter( 'option_siteurl', '_config_wp_siteurl' );

add_filter( 'tiny_mce_before_init', '_mce_set_direction' );

add_filter( 'teeny_mce_before_init', '_mce_set_direction' );

add_filter( 'pre_kses', 'wp_pre_kses_less_than' );

add_filter( 'sanitize_title', 'sanitize_title_with_dashes', 10, 3 );

add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 );

add_filter( 'comment_flood_filter', 'wp_throttle_comment_flood', 10, 3 );

add_filter( 'pre_comment_content', 'wp_rel_nofollow', 15 );

add_filter( 'comment_email', 'antispambot' );

add_filter( 'option_tag_base', '_wp_filter_taxonomy_base' );

add_filter( 'option_category_base', '_wp_filter_taxonomy_base' );

add_filter( 'the_posts', '_close_comments_for_old_posts', 10, 2 );

add_filter( 'comments_open', '_close_comments_for_old_post', 10, 2 );

add_filter( 'pings_open', '_close_comments_for_old_post', 10, 2 );

add_filter( 'editable_slug', 'urldecode' );

add_filter( 'editable_slug', 'esc_textarea' );

add_filter( 'nav_menu_meta_box_object', '_wp_nav_menu_meta_box_object' );

add_filter( 'pingback_ping_source_uri', 'pingback_ping_source_uri' );

add_filter( 'xmlrpc_pingback_error', 'xmlrpc_pingback_error' );

add_filter( 'title_save_pre', 'trim' );

add_action( 'transition_comment_status', '_clear_modified_cache_on_transition_comment_status', 10, 2 );

add_filter( 'http_request_host_is_external', 'allowed_http_request_hosts', 10, 2 );

// REST API filters.

add_action( 'xmlrpc_rsd_apis', 'rest_output_rsd' );

add_action( 'wp_head', 'rest_output_link_wp_head', 10, 0 );

add_action( 'template_redirect', 'rest_output_link_header', 11, 0 );

add_action( 'auth_cookie_malformed', 'rest_cookie_collect_status' );

add_action( 'auth_cookie_expired', 'rest_cookie_collect_status' );

add_action( 'auth_cookie_bad_username', 'rest_cookie_collect_status' );

add_action( 'auth_cookie_bad_hash', 'rest_cookie_collect_status' );

add_action( 'auth_cookie_valid', 'rest_cookie_collect_status' );

add_filter( 'rest_authentication_errors', 'rest_cookie_check_errors', 100 );

// Actions

add_action( 'wp_head', '_wp_render_title_tag', 1 );

add_action( 'wp_head', 'wp_enqueue_scripts', 1 );

add_action( 'wp_head', 'wp_resource_hints', 2 );

add_action( 'wp_head', 'feed_links', 2 );

add_action( 'wp_head', 'feed_links_extra', 3 );

add_action( 'wp_head', 'rsd_link' );

add_action( 'wp_head', 'wlwmanifest_link' );

add_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0 );

add_action( 'wp_head', 'locale_stylesheet' );

add_action( 'publish_future_post', 'check_and_publish_future_post', 10, 1 );

add_action( 'wp_head', 'noindex', 1 );

add_action( 'wp_head', 'print_emoji_detection_script', 7 );

add_action( 'wp_head', 'wp_print_styles', 8 );

add_action( 'wp_head', 'wp_print_head_scripts', 9 );

add_action( 'wp_head', 'wp_generator' );

add_action( 'wp_head', 'rel_canonical' );

add_action( 'wp_head', 'wp_shortlink_wp_head', 10, 0 );

add_action( 'wp_head', 'wp_custom_css_cb', 101 );

add_action( 'wp_head', 'wp_site_icon', 99 );

add_action( 'wp_footer', 'wp_print_footer_scripts', 20 );

add_action( 'template_redirect', 'wp_shortlink_header', 11, 0 );

add_action( 'wp_print_footer_scripts', '_wp_footer_scripts' );

add_action( 'init', 'check_theme_switched', 99 );

add_action( 'after_switch_theme', '_wp_menus_changed' );

add_action( 'after_switch_theme', '_wp_sidebars_changed' );

add_action( 'wp_print_styles', 'print_emoji_styles' );

if ( isset( $_GET['replytocom'] ) ) {

	add_action( 'wp_head', 'wp_no_robots' );

}

// Login actions

add_filter( 'login_head', 'wp_resource_hints', 8 );

add_action( 'login_head', 'wp_print_head_scripts', 9 );

add_action( 'login_head', 'print_admin_styles', 9 );

add_action( 'login_head', 'wp_site_icon', 99 );

add_action( 'login_footer', 'wp_print_footer_scripts', 20 );

add_action( 'login_init', 'send_frame_options_header', 10, 0 );

// Feed Generator Tags

foreach ( array( 'rss2_head', 'commentsrss2_head', 'rss_head', 'rdf_header', 'atom_head', 'comments_atom_head', 'opml_head', 'app_head' ) as $action ) {

	add_action( $action, 'the_generator' );

}

// Feed Site Icon

add_action( 'atom_head', 'atom_site_icon' );

add_action( 'rss2_head', 'rss2_site_icon' );

// WP Cron

if ( ! defined( 'DOING_CRON' ) ) {

	add_action( 'init', 'wp_cron' );

}

// 2 Actions 2 Furious

add_action( 'do_feed_rdf', 'do_feed_rdf', 10, 1 );

add_action( 'do_feed_rss', 'do_feed_rss', 10, 1 );

add_action( 'do_feed_rss2', 'do_feed_rss2', 10, 1 );

add_action( 'do_feed_atom', 'do_feed_atom', 10, 1 );

add_action( 'do_pings', 'do_all_pings', 10, 1 );

add_action( 'do_robots', 'do_robots' );

add_action( 'set_comment_cookies', 'wp_set_comment_cookies', 10, 3 );

add_action( 'sanitize_comment_cookies', 'sanitize_comment_cookies' );

add_action( 'admin_print_scripts', 'print_emoji_detection_script' );

add_action( 'admin_print_scripts', 'print_head_scripts', 20 );

add_action( 'admin_print_footer_scripts', '_wp_footer_scripts' );

add_action( 'admin_print_styles', 'print_emoji_styles' );

add_action( 'admin_print_styles', 'print_admin_styles', 20 );

add_action( 'init', 'smilies_init', 5 );

add_action( 'plugins_loaded', 'wp_maybe_load_widgets', 0 );

add_action( 'plugins_loaded', 'wp_maybe_load_embeds', 0 );

add_action( 'shutdown', 'wp_ob_end_flush_all', 1 );

// Create a revision whenever a post is updated.

add_action( 'post_updated', 'wp_save_post_revision', 10, 1 );

add_action( 'publish_post', '_publish_post_hook', 5, 1 );

add_action( 'transition_post_status', '_transition_post_status', 5, 3 );

add_action( 'transition_post_status', '_update_term_count_on_transition_post_status', 10, 3 );

add_action( 'comment_form', 'wp_comment_form_unfiltered_html_nonce' );

add_action( 'admin_init', 'send_frame_options_header', 10, 0 );

add_action( 'welcome_panel', 'wp_welcome_panel' );

// Privacy

add_action( 'user_request_action_confirmed', '_wp_privacy_account_request_confirmed' );

add_action( 'user_request_action_confirmed', '_wp_privacy_send_request_confirmation_notification', 12 ); // After request marked as completed.

add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_comment_personal_data_exporter' );

add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_media_personal_data_exporter' );

add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_user_personal_data_exporter', 1 );

add_filter( 'wp_privacy_personal_data_erasers', 'wp_register_comment_personal_data_eraser' );

add_action( 'init', 'wp_schedule_delete_old_privacy_export_files' );

add_action( 'wp_privacy_delete_old_export_files', 'wp_privacy_delete_old_export_files' );

// Cron tasks

add_action( 'wp_scheduled_delete', 'wp_scheduled_delete' );

add_action( 'wp_scheduled_auto_draft_delete', 'wp_delete_auto_drafts' );

add_action( 'importer_scheduled_cleanup', 'wp_delete_attachment' );