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   1  <?php
   2  /**
   3   * Sets up the default filters and actions for most
   4   * of the WordPress hooks.
   5   *
   6   * If you need to remove a default hook, this file will
   7   * give you the priority to use for removing the hook.
   8   *
   9   * Not all of the default hooks are found in this file.
  10   * For instance, administration-related hooks are located in
  11   * wp-admin/includes/admin-filters.php.
  12   *
  13   * If a hook should only be called from a specific context
  14   * (admin area, multisite environment…), please move it
  15   * to a more appropriate file instead.
  16   *
  17   * @package WordPress
  18   */
  19  
  20  // Strip, trim, kses, special chars for string saves.
  21  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 ) {
  22      add_filter( $filter, 'sanitize_text_field' );
  23      add_filter( $filter, 'wp_filter_kses' );
  24      add_filter( $filter, '_wp_specialchars', 30 );
  25  }
  26  
  27  // Strip, kses, special chars for string display.
  28  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 ) {
  29      if ( is_admin() ) {
  30          // These are expensive. Run only on admin pages for defense in depth.
  31          add_filter( $filter, 'sanitize_text_field' );
  32          add_filter( $filter, 'wp_kses_data' );
  33      }
  34      add_filter( $filter, '_wp_specialchars', 30 );
  35  }
  36  
  37  // Kses only for textarea saves.
  38  foreach ( array( 'pre_term_description', 'pre_link_description', 'pre_link_notes', 'pre_user_description' ) as $filter ) {
  39      add_filter( $filter, 'wp_filter_kses' );
  40  }
  41  
  42  // Kses only for textarea admin displays.
  43  if ( is_admin() ) {
  44      foreach ( array( 'term_description', 'link_description', 'link_notes', 'user_description' ) as $filter ) {
  45          add_filter( $filter, 'wp_kses_data' );
  46      }
  47      add_filter( 'comment_text', 'wp_kses_post' );
  48  }
  49  
  50  // Email saves.
  51  foreach ( array( 'pre_comment_author_email', 'pre_user_email' ) as $filter ) {
  52      add_filter( $filter, 'trim' );
  53      add_filter( $filter, 'sanitize_email' );
  54      add_filter( $filter, 'wp_filter_kses' );
  55  }
  56  
  57  // Email admin display.
  58  foreach ( array( 'comment_author_email', 'user_email' ) as $filter ) {
  59      add_filter( $filter, 'sanitize_email' );
  60      if ( is_admin() ) {
  61          add_filter( $filter, 'wp_kses_data' );
  62      }
  63  }
  64  
  65  // Save URL.
  66  foreach ( array(
  67      'pre_comment_author_url',
  68      'pre_user_url',
  69      'pre_link_url',
  70      'pre_link_image',
  71      'pre_link_rss',
  72      'pre_post_guid',
  73  ) as $filter ) {
  74      add_filter( $filter, 'wp_strip_all_tags' );
  75      add_filter( $filter, 'esc_url_raw' );
  76      add_filter( $filter, 'wp_filter_kses' );
  77  }
  78  
  79  // Display URL.
  80  foreach ( array( 'user_url', 'link_url', 'link_image', 'link_rss', 'comment_url', 'post_guid' ) as $filter ) {
  81      if ( is_admin() ) {
  82          add_filter( $filter, 'wp_strip_all_tags' );
  83      }
  84      add_filter( $filter, 'esc_url' );
  85      if ( is_admin() ) {
  86          add_filter( $filter, 'wp_kses_data' );
  87      }
  88  }
  89  
  90  // Slugs.
  91  add_filter( 'pre_term_slug', 'sanitize_title' );
  92  add_filter( 'wp_insert_post_data', '_wp_customize_changeset_filter_insert_post_data', 10, 2 );
  93  
  94  // Keys.
  95  foreach ( array( 'pre_post_type', 'pre_post_status', 'pre_post_comment_status', 'pre_post_ping_status' ) as $filter ) {
  96      add_filter( $filter, 'sanitize_key' );
  97  }
  98  
  99  // Mime types.
 100  add_filter( 'pre_post_mime_type', 'sanitize_mime_type' );
 101  add_filter( 'post_mime_type', 'sanitize_mime_type' );
 102  
 103  // Meta.
 104  add_filter( 'register_meta_args', '_wp_register_meta_args_allowed_list', 10, 2 );
 105  
 106  // Counts.
 107  add_action( 'admin_init', 'wp_schedule_update_user_counts' );
 108  add_action( 'wp_update_user_counts', 'wp_schedule_update_user_counts', 10, 0 );
 109  foreach ( array( 'user_register', 'deleted_user' ) as $action ) {
 110      add_action( $action, 'wp_maybe_update_user_counts', 10, 0 );
 111  }
 112  
 113  // Post meta.
 114  add_action( 'added_post_meta', 'wp_cache_set_posts_last_changed' );
 115  add_action( 'updated_post_meta', 'wp_cache_set_posts_last_changed' );
 116  add_action( 'deleted_post_meta', 'wp_cache_set_posts_last_changed' );
 117  
 118  // Term meta.
 119  add_action( 'added_term_meta', 'wp_cache_set_terms_last_changed' );
 120  add_action( 'updated_term_meta', 'wp_cache_set_terms_last_changed' );
 121  add_action( 'deleted_term_meta', 'wp_cache_set_terms_last_changed' );
 122  add_filter( 'get_term_metadata', 'wp_check_term_meta_support_prefilter' );
 123  add_filter( 'add_term_metadata', 'wp_check_term_meta_support_prefilter' );
 124  add_filter( 'update_term_metadata', 'wp_check_term_meta_support_prefilter' );
 125  add_filter( 'delete_term_metadata', 'wp_check_term_meta_support_prefilter' );
 126  add_filter( 'get_term_metadata_by_mid', 'wp_check_term_meta_support_prefilter' );
 127  add_filter( 'update_term_metadata_by_mid', 'wp_check_term_meta_support_prefilter' );
 128  add_filter( 'delete_term_metadata_by_mid', 'wp_check_term_meta_support_prefilter' );
 129  add_filter( 'update_term_metadata_cache', 'wp_check_term_meta_support_prefilter' );
 130  
 131  // Comment meta.
 132  add_action( 'added_comment_meta', 'wp_cache_set_comments_last_changed' );
 133  add_action( 'updated_comment_meta', 'wp_cache_set_comments_last_changed' );
 134  add_action( 'deleted_comment_meta', 'wp_cache_set_comments_last_changed' );
 135  
 136  // Places to balance tags on input.
 137  foreach ( array( 'content_save_pre', 'excerpt_save_pre', 'comment_save_pre', 'pre_comment_content' ) as $filter ) {
 138      add_filter( $filter, 'convert_invalid_entities' );
 139      add_filter( $filter, 'balanceTags', 50 );
 140  }
 141  
 142  // Add proper rel values for links with target.
 143  add_action( 'init', 'wp_init_targeted_link_rel_filters' );
 144  
 145  // Format strings for display.
 146  foreach ( array( 'comment_author', 'term_name', 'link_name', 'link_description', 'link_notes', 'bloginfo', 'wp_title', 'document_title', 'widget_title' ) as $filter ) {
 147      add_filter( $filter, 'wptexturize' );
 148      add_filter( $filter, 'convert_chars' );
 149      add_filter( $filter, 'esc_html' );
 150  }
 151  
 152  // Format WordPress.
 153  foreach ( array( 'the_content', 'the_title', 'wp_title', 'document_title' ) as $filter ) {
 154      add_filter( $filter, 'capital_P_dangit', 11 );
 155  }
 156  add_filter( 'comment_text', 'capital_P_dangit', 31 );
 157  
 158  // Format titles.
 159  foreach ( array( 'single_post_title', 'single_cat_title', 'single_tag_title', 'single_month_title', 'nav_menu_attr_title', 'nav_menu_description' ) as $filter ) {
 160      add_filter( $filter, 'wptexturize' );
 161      add_filter( $filter, 'strip_tags' );
 162  }
 163  
 164  // Format text area for display.
 165  foreach ( array( 'term_description', 'get_the_post_type_description' ) as $filter ) {
 166      add_filter( $filter, 'wptexturize' );
 167      add_filter( $filter, 'convert_chars' );
 168      add_filter( $filter, 'wpautop' );
 169      add_filter( $filter, 'shortcode_unautop' );
 170  }
 171  
 172  // Format for RSS.
 173  add_filter( 'term_name_rss', 'convert_chars' );
 174  
 175  // Pre save hierarchy.
 176  add_filter( 'wp_insert_post_parent', 'wp_check_post_hierarchy_for_loops', 10, 2 );
 177  add_filter( 'wp_update_term_parent', 'wp_check_term_hierarchy_for_loops', 10, 3 );
 178  
 179  // Display filters.
 180  add_filter( 'the_title', 'wptexturize' );
 181  add_filter( 'the_title', 'convert_chars' );
 182  add_filter( 'the_title', 'trim' );
 183  
 184  add_filter( 'the_content', 'do_blocks', 9 );
 185  add_filter( 'the_content', 'wptexturize' );
 186  add_filter( 'the_content', 'convert_smilies', 20 );
 187  add_filter( 'the_content', 'wpautop' );
 188  add_filter( 'the_content', 'shortcode_unautop' );
 189  add_filter( 'the_content', 'prepend_attachment' );
 190  add_filter( 'the_content', 'wp_filter_content_tags' );
 191  add_filter( 'the_content', 'wp_replace_insecure_home_url' );
 192  
 193  add_filter( 'the_excerpt', 'wptexturize' );
 194  add_filter( 'the_excerpt', 'convert_smilies' );
 195  add_filter( 'the_excerpt', 'convert_chars' );
 196  add_filter( 'the_excerpt', 'wpautop' );
 197  add_filter( 'the_excerpt', 'shortcode_unautop' );
 198  add_filter( 'the_excerpt', 'wp_filter_content_tags' );
 199  add_filter( 'the_excerpt', 'wp_replace_insecure_home_url' );
 200  add_filter( 'get_the_excerpt', 'wp_trim_excerpt', 10, 2 );
 201  
 202  add_filter( 'the_post_thumbnail_caption', 'wptexturize' );
 203  add_filter( 'the_post_thumbnail_caption', 'convert_smilies' );
 204  add_filter( 'the_post_thumbnail_caption', 'convert_chars' );
 205  
 206  add_filter( 'comment_text', 'wptexturize' );
 207  add_filter( 'comment_text', 'convert_chars' );
 208  add_filter( 'comment_text', 'make_clickable', 9 );
 209  add_filter( 'comment_text', 'force_balance_tags', 25 );
 210  add_filter( 'comment_text', 'convert_smilies', 20 );
 211  add_filter( 'comment_text', 'wpautop', 30 );
 212  
 213  add_filter( 'comment_excerpt', 'convert_chars' );
 214  
 215  add_filter( 'list_cats', 'wptexturize' );
 216  
 217  add_filter( 'wp_sprintf', 'wp_sprintf_l', 10, 2 );
 218  
 219  add_filter( 'widget_text', 'balanceTags' );
 220  add_filter( 'widget_text_content', 'capital_P_dangit', 11 );
 221  add_filter( 'widget_text_content', 'wptexturize' );
 222  add_filter( 'widget_text_content', 'convert_smilies', 20 );
 223  add_filter( 'widget_text_content', 'wpautop' );
 224  add_filter( 'widget_text_content', 'shortcode_unautop' );
 225  add_filter( 'widget_text_content', 'wp_filter_content_tags' );
 226  add_filter( 'widget_text_content', 'wp_replace_insecure_home_url' );
 227  add_filter( 'widget_text_content', 'do_shortcode', 11 ); // Runs after wpautop(); note that $post global will be null when shortcodes run.
 228  
 229  add_filter( 'widget_block_content', 'do_blocks', 9 );
 230  add_filter( 'widget_block_content', 'wp_filter_content_tags' );
 231  add_filter( 'widget_block_content', 'do_shortcode', 11 );
 232  
 233  add_filter( 'block_type_metadata', 'wp_migrate_old_typography_shape' );
 234  
 235  add_filter( 'wp_get_custom_css', 'wp_replace_insecure_home_url' );
 236  
 237  // RSS filters.
 238  add_filter( 'the_title_rss', 'strip_tags' );
 239  add_filter( 'the_title_rss', 'ent2ncr', 8 );
 240  add_filter( 'the_title_rss', 'esc_html' );
 241  add_filter( 'the_content_rss', 'ent2ncr', 8 );
 242  add_filter( 'the_content_feed', 'wp_staticize_emoji' );
 243  add_filter( 'the_content_feed', '_oembed_filter_feed_content' );
 244  add_filter( 'the_excerpt_rss', 'convert_chars' );
 245  add_filter( 'the_excerpt_rss', 'ent2ncr', 8 );
 246  add_filter( 'comment_author_rss', 'ent2ncr', 8 );
 247  add_filter( 'comment_text_rss', 'ent2ncr', 8 );
 248  add_filter( 'comment_text_rss', 'esc_html' );
 249  add_filter( 'comment_text_rss', 'wp_staticize_emoji' );
 250  add_filter( 'bloginfo_rss', 'ent2ncr', 8 );
 251  add_filter( 'the_author', 'ent2ncr', 8 );
 252  add_filter( 'the_guid', 'esc_url' );
 253  
 254  // Email filters.
 255  add_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
 256  
 257  // Robots filters.
 258  add_filter( 'wp_robots', 'wp_robots_noindex' );
 259  add_filter( 'wp_robots', 'wp_robots_noindex_embeds' );
 260  add_filter( 'wp_robots', 'wp_robots_noindex_search' );
 261  add_filter( 'wp_robots', 'wp_robots_max_image_preview_large' );
 262  
 263  // Mark site as no longer fresh.
 264  foreach (
 265      array(
 266          'publish_post',
 267          'publish_page',
 268          'wp_ajax_save-widget',
 269          'wp_ajax_widgets-order',
 270          'customize_save_after',
 271          'rest_after_save_widget',
 272          'rest_delete_widget',
 273          'rest_save_sidebar',
 274      ) as $action
 275  ) {
 276      add_action( $action, '_delete_option_fresh_site', 0 );
 277  }
 278  
 279  // Misc filters.
 280  add_filter( 'option_ping_sites', 'privacy_ping_filter' );
 281  add_filter( 'option_blog_charset', '_wp_specialchars' ); // IMPORTANT: This must not be wp_specialchars() or esc_html() or it'll cause an infinite loop.
 282  add_filter( 'option_blog_charset', '_canonical_charset' );
 283  add_filter( 'option_home', '_config_wp_home' );
 284  add_filter( 'option_siteurl', '_config_wp_siteurl' );
 285  add_filter( 'tiny_mce_before_init', '_mce_set_direction' );
 286  add_filter( 'teeny_mce_before_init', '_mce_set_direction' );
 287  add_filter( 'pre_kses', 'wp_pre_kses_less_than' );
 288  add_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10, 3 );
 289  add_filter( 'sanitize_title', 'sanitize_title_with_dashes', 10, 3 );
 290  add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 );
 291  add_filter( 'comment_flood_filter', 'wp_throttle_comment_flood', 10, 3 );
 292  add_filter( 'pre_comment_content', 'wp_rel_ugc', 15 );
 293  add_filter( 'comment_email', 'antispambot' );
 294  add_filter( 'option_tag_base', '_wp_filter_taxonomy_base' );
 295  add_filter( 'option_category_base', '_wp_filter_taxonomy_base' );
 296  add_filter( 'the_posts', '_close_comments_for_old_posts', 10, 2 );
 297  add_filter( 'comments_open', '_close_comments_for_old_post', 10, 2 );
 298  add_filter( 'pings_open', '_close_comments_for_old_post', 10, 2 );
 299  add_filter( 'editable_slug', 'urldecode' );
 300  add_filter( 'editable_slug', 'esc_textarea' );
 301  add_filter( 'pingback_ping_source_uri', 'pingback_ping_source_uri' );
 302  add_filter( 'xmlrpc_pingback_error', 'xmlrpc_pingback_error' );
 303  add_filter( 'title_save_pre', 'trim' );
 304  
 305  add_action( 'transition_comment_status', '_clear_modified_cache_on_transition_comment_status', 10, 2 );
 306  
 307  add_filter( 'http_request_host_is_external', 'allowed_http_request_hosts', 10, 2 );
 308  
 309  // REST API filters.
 310  add_action( 'xmlrpc_rsd_apis', 'rest_output_rsd' );
 311  add_action( 'wp_head', 'rest_output_link_wp_head', 10, 0 );
 312  add_action( 'template_redirect', 'rest_output_link_header', 11, 0 );
 313  add_action( 'auth_cookie_malformed', 'rest_cookie_collect_status' );
 314  add_action( 'auth_cookie_expired', 'rest_cookie_collect_status' );
 315  add_action( 'auth_cookie_bad_username', 'rest_cookie_collect_status' );
 316  add_action( 'auth_cookie_bad_hash', 'rest_cookie_collect_status' );
 317  add_action( 'auth_cookie_valid', 'rest_cookie_collect_status' );
 318  add_action( 'application_password_failed_authentication', 'rest_application_password_collect_status' );
 319  add_action( 'application_password_did_authenticate', 'rest_application_password_collect_status', 10, 2 );
 320  add_filter( 'rest_authentication_errors', 'rest_application_password_check_errors', 90 );
 321  add_filter( 'rest_authentication_errors', 'rest_cookie_check_errors', 100 );
 322  
 323  // Actions.
 324  add_action( 'wp_head', '_wp_render_title_tag', 1 );
 325  add_action( 'wp_head', 'wp_enqueue_scripts', 1 );
 326  add_action( 'wp_head', 'wp_resource_hints', 2 );
 327  add_action( 'wp_head', 'feed_links', 2 );
 328  add_action( 'wp_head', 'feed_links_extra', 3 );
 329  add_action( 'wp_head', 'rsd_link' );
 330  add_action( 'wp_head', 'wlwmanifest_link' );
 331  add_action( 'wp_head', 'locale_stylesheet' );
 332  add_action( 'publish_future_post', 'check_and_publish_future_post', 10, 1 );
 333  add_action( 'wp_head', 'wp_robots', 1 );
 334  add_action( 'wp_head', 'print_emoji_detection_script', 7 );
 335  add_action( 'wp_head', 'wp_print_styles', 8 );
 336  add_action( 'wp_head', 'wp_print_head_scripts', 9 );
 337  add_action( 'wp_head', 'wp_generator' );
 338  add_action( 'wp_head', 'rel_canonical' );
 339  add_action( 'wp_head', 'wp_shortlink_wp_head', 10, 0 );
 340  add_action( 'wp_head', 'wp_custom_css_cb', 101 );
 341  add_action( 'wp_head', 'wp_site_icon', 99 );
 342  add_action( 'wp_footer', 'wp_print_footer_scripts', 20 );
 343  add_action( 'template_redirect', 'wp_shortlink_header', 11, 0 );
 344  add_action( 'wp_print_footer_scripts', '_wp_footer_scripts' );
 345  add_action( 'init', '_register_core_block_patterns_and_categories' );
 346  add_action( 'init', 'check_theme_switched', 99 );
 347  add_action( 'init', array( 'WP_Block_Supports', 'init' ), 22 );
 348  add_action( 'switch_theme', array( 'WP_Theme_JSON_Resolver', 'clean_cached_data' ) );
 349  add_action( 'start_previewing_theme', array( 'WP_Theme_JSON_Resolver', 'clean_cached_data' ) );
 350  add_action( 'after_switch_theme', '_wp_menus_changed' );
 351  add_action( 'after_switch_theme', '_wp_sidebars_changed' );
 352  add_action( 'wp_print_styles', 'print_emoji_styles' );
 353  add_action( 'plugins_loaded', '_wp_theme_json_webfonts_handler' );
 354  
 355  if ( isset( $_GET['replytocom'] ) ) {
 356      add_filter( 'wp_robots', 'wp_robots_no_robots' );
 357  }
 358  
 359  // Login actions.
 360  add_action( 'login_head', 'wp_robots', 1 );
 361  add_filter( 'login_head', 'wp_resource_hints', 8 );
 362  add_action( 'login_head', 'wp_print_head_scripts', 9 );
 363  add_action( 'login_head', 'print_admin_styles', 9 );
 364  add_action( 'login_head', 'wp_site_icon', 99 );
 365  add_action( 'login_footer', 'wp_print_footer_scripts', 20 );
 366  add_action( 'login_init', 'send_frame_options_header', 10, 0 );
 367  
 368  // Feed generator tags.
 369  foreach ( array( 'rss2_head', 'commentsrss2_head', 'rss_head', 'rdf_header', 'atom_head', 'comments_atom_head', 'opml_head', 'app_head' ) as $action ) {
 370      add_action( $action, 'the_generator' );
 371  }
 372  
 373  // Feed Site Icon.
 374  add_action( 'atom_head', 'atom_site_icon' );
 375  add_action( 'rss2_head', 'rss2_site_icon' );
 376  
 377  
 378  // WP Cron.
 379  if ( ! defined( 'DOING_CRON' ) ) {
 380      add_action( 'init', 'wp_cron' );
 381  }
 382  
 383  // HTTPS detection.
 384  add_action( 'init', 'wp_schedule_https_detection' );
 385  add_action( 'wp_https_detection', 'wp_update_https_detection_errors' );
 386  add_filter( 'cron_request', 'wp_cron_conditionally_prevent_sslverify', 9999 );
 387  
 388  // HTTPS migration.
 389  add_action( 'update_option_home', 'wp_update_https_migration_required', 10, 2 );
 390  
 391  // 2 Actions 2 Furious.
 392  add_action( 'do_feed_rdf', 'do_feed_rdf', 10, 0 );
 393  add_action( 'do_feed_rss', 'do_feed_rss', 10, 0 );
 394  add_action( 'do_feed_rss2', 'do_feed_rss2', 10, 1 );
 395  add_action( 'do_feed_atom', 'do_feed_atom', 10, 1 );
 396  add_action( 'do_pings', 'do_all_pings', 10, 0 );
 397  add_action( 'do_all_pings', 'do_all_pingbacks', 10, 0 );
 398  add_action( 'do_all_pings', 'do_all_enclosures', 10, 0 );
 399  add_action( 'do_all_pings', 'do_all_trackbacks', 10, 0 );
 400  add_action( 'do_all_pings', 'generic_ping', 10, 0 );
 401  add_action( 'do_robots', 'do_robots' );
 402  add_action( 'do_favicon', 'do_favicon' );
 403  add_action( 'set_comment_cookies', 'wp_set_comment_cookies', 10, 3 );
 404  add_action( 'sanitize_comment_cookies', 'sanitize_comment_cookies' );
 405  add_action( 'init', 'smilies_init', 5 );
 406  add_action( 'plugins_loaded', 'wp_maybe_load_widgets', 0 );
 407  add_action( 'plugins_loaded', 'wp_maybe_load_embeds', 0 );
 408  add_action( 'shutdown', 'wp_ob_end_flush_all', 1 );
 409  // Create a revision whenever a post is updated.
 410  add_action( 'post_updated', 'wp_save_post_revision', 10, 1 );
 411  add_action( 'publish_post', '_publish_post_hook', 5, 1 );
 412  add_action( 'transition_post_status', '_transition_post_status', 5, 3 );
 413  add_action( 'transition_post_status', '_update_term_count_on_transition_post_status', 10, 3 );
 414  add_action( 'comment_form', 'wp_comment_form_unfiltered_html_nonce' );
 415  
 416  // Privacy.
 417  add_action( 'user_request_action_confirmed', '_wp_privacy_account_request_confirmed' );
 418  add_action( 'user_request_action_confirmed', '_wp_privacy_send_request_confirmation_notification', 12 ); // After request marked as completed.
 419  add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_comment_personal_data_exporter' );
 420  add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_media_personal_data_exporter' );
 421  add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_user_personal_data_exporter', 1 );
 422  add_filter( 'wp_privacy_personal_data_erasers', 'wp_register_comment_personal_data_eraser' );
 423  add_action( 'init', 'wp_schedule_delete_old_privacy_export_files' );
 424  add_action( 'wp_privacy_delete_old_export_files', 'wp_privacy_delete_old_export_files' );
 425  
 426  // Cron tasks.
 427  add_action( 'wp_scheduled_delete', 'wp_scheduled_delete' );
 428  add_action( 'wp_scheduled_auto_draft_delete', 'wp_delete_auto_drafts' );
 429  add_action( 'importer_scheduled_cleanup', 'wp_delete_attachment' );
 430  add_action( 'upgrader_scheduled_cleanup', 'wp_delete_attachment' );
 431  add_action( 'delete_expired_transients', 'delete_expired_transients' );
 432  
 433  // Navigation menu actions.
 434  add_action( 'delete_post', '_wp_delete_post_menu_item' );
 435  add_action( 'delete_term', '_wp_delete_tax_menu_item', 10, 3 );
 436  add_action( 'transition_post_status', '_wp_auto_add_pages_to_menu', 10, 3 );
 437  add_action( 'delete_post', '_wp_delete_customize_changeset_dependent_auto_drafts' );
 438  
 439  // Post Thumbnail CSS class filtering.
 440  add_action( 'begin_fetch_post_thumbnail_html', '_wp_post_thumbnail_class_filter_add' );
 441  add_action( 'end_fetch_post_thumbnail_html', '_wp_post_thumbnail_class_filter_remove' );
 442  
 443  // Redirect old slugs.
 444  add_action( 'template_redirect', 'wp_old_slug_redirect' );
 445  add_action( 'post_updated', 'wp_check_for_changed_slugs', 12, 3 );
 446  add_action( 'attachment_updated', 'wp_check_for_changed_slugs', 12, 3 );
 447  
 448  // Redirect old dates.
 449  add_action( 'post_updated', 'wp_check_for_changed_dates', 12, 3 );
 450  add_action( 'attachment_updated', 'wp_check_for_changed_dates', 12, 3 );
 451  
 452  // Nonce check for post previews.
 453  add_action( 'init', '_show_post_preview' );
 454  
 455  // Output JS to reset window.name for previews.
 456  add_action( 'wp_head', 'wp_post_preview_js', 1 );
 457  
 458  // Timezone.
 459  add_filter( 'pre_option_gmt_offset', 'wp_timezone_override_offset' );
 460  
 461  // If the upgrade hasn't run yet, assume link manager is used.
 462  add_filter( 'default_option_link_manager_enabled', '__return_true' );
 463  
 464  // This option no longer exists; tell plugins we always support auto-embedding.
 465  add_filter( 'pre_option_embed_autourls', '__return_true' );
 466  
 467  // Default settings for heartbeat.
 468  add_filter( 'heartbeat_settings', 'wp_heartbeat_settings' );
 469  
 470  // Check if the user is logged out.
 471  add_action( 'admin_enqueue_scripts', 'wp_auth_check_load' );
 472  add_filter( 'heartbeat_send', 'wp_auth_check' );
 473  add_filter( 'heartbeat_nopriv_send', 'wp_auth_check' );
 474  
 475  // Default authentication filters.
 476  add_filter( 'authenticate', 'wp_authenticate_username_password', 20, 3 );
 477  add_filter( 'authenticate', 'wp_authenticate_email_password', 20, 3 );
 478  add_filter( 'authenticate', 'wp_authenticate_application_password', 20, 3 );
 479  add_filter( 'authenticate', 'wp_authenticate_spam_check', 99 );
 480  add_filter( 'determine_current_user', 'wp_validate_auth_cookie' );
 481  add_filter( 'determine_current_user', 'wp_validate_logged_in_cookie', 20 );
 482  add_filter( 'determine_current_user', 'wp_validate_application_password', 20 );
 483  
 484  // Split term updates.
 485  add_action( 'admin_init', '_wp_check_for_scheduled_split_terms' );
 486  add_action( 'split_shared_term', '_wp_check_split_default_terms', 10, 4 );
 487  add_action( 'split_shared_term', '_wp_check_split_terms_in_menus', 10, 4 );
 488  add_action( 'split_shared_term', '_wp_check_split_nav_menu_terms', 10, 4 );
 489  add_action( 'wp_split_shared_term_batch', '_wp_batch_split_terms' );
 490  
 491  // Comment type updates.
 492  add_action( 'admin_init', '_wp_check_for_scheduled_update_comment_type' );
 493  add_action( 'wp_update_comment_type_batch', '_wp_batch_update_comment_type' );
 494  
 495  // Email notifications.
 496  add_action( 'comment_post', 'wp_new_comment_notify_moderator' );
 497  add_action( 'comment_post', 'wp_new_comment_notify_postauthor' );
 498  add_action( 'after_password_reset', 'wp_password_change_notification' );
 499  add_action( 'register_new_user', 'wp_send_new_user_notifications' );
 500  add_action( 'edit_user_created_user', 'wp_send_new_user_notifications', 10, 2 );
 501  
 502  // REST API actions.
 503  add_action( 'init', 'rest_api_init' );
 504  add_action( 'rest_api_init', 'rest_api_default_filters', 10, 1 );
 505  add_action( 'rest_api_init', 'register_initial_settings', 10 );
 506  add_action( 'rest_api_init', 'create_initial_rest_routes', 99 );
 507  add_action( 'parse_request', 'rest_api_loaded' );
 508  
 509  // Sitemaps actions.
 510  add_action( 'init', 'wp_sitemaps_get_server' );
 511  
 512  /**
 513   * Filters formerly mixed into wp-includes.
 514   */
 515  // Theme.
 516  add_action( 'setup_theme', 'create_initial_theme_features', 0 );
 517  add_action( 'setup_theme', '_add_default_theme_supports', 1 );
 518  add_action( 'wp_loaded', '_custom_header_background_just_in_time' );
 519  add_action( 'wp_head', '_custom_logo_header_styles' );
 520  add_action( 'plugins_loaded', '_wp_customize_include' );
 521  add_action( 'transition_post_status', '_wp_customize_publish_changeset', 10, 3 );
 522  add_action( 'admin_enqueue_scripts', '_wp_customize_loader_settings' );
 523  add_action( 'delete_attachment', '_delete_attachment_theme_mod' );
 524  add_action( 'transition_post_status', '_wp_keep_alive_customize_changeset_dependent_auto_drafts', 20, 3 );
 525  
 526  // Calendar widget cache.
 527  add_action( 'save_post', 'delete_get_calendar_cache' );
 528  add_action( 'delete_post', 'delete_get_calendar_cache' );
 529  add_action( 'update_option_start_of_week', 'delete_get_calendar_cache' );
 530  add_action( 'update_option_gmt_offset', 'delete_get_calendar_cache' );
 531  
 532  // Author.
 533  add_action( 'transition_post_status', '__clear_multi_author_cache' );
 534  
 535  // Post.
 536  add_action( 'init', 'create_initial_post_types', 0 ); // Highest priority.
 537  add_action( 'admin_menu', '_add_post_type_submenus' );
 538  add_action( 'before_delete_post', '_reset_front_page_settings_for_post' );
 539  add_action( 'wp_trash_post', '_reset_front_page_settings_for_post' );
 540  add_action( 'change_locale', 'create_initial_post_types' );
 541  
 542  // Post Formats.
 543  add_filter( 'request', '_post_format_request' );
 544  add_filter( 'term_link', '_post_format_link', 10, 3 );
 545  add_filter( 'get_post_format', '_post_format_get_term' );
 546  add_filter( 'get_terms', '_post_format_get_terms', 10, 3 );
 547  add_filter( 'wp_get_object_terms', '_post_format_wp_get_object_terms' );
 548  
 549  // KSES.
 550  add_action( 'init', 'kses_init' );
 551  add_action( 'set_current_user', 'kses_init' );
 552  
 553  // Script Loader.
 554  add_action( 'wp_default_scripts', 'wp_default_scripts' );
 555  add_action( 'wp_default_scripts', 'wp_default_packages' );
 556  
 557  add_action( 'wp_enqueue_scripts', 'wp_localize_jquery_ui_datepicker', 1000 );
 558  add_action( 'wp_enqueue_scripts', 'wp_common_block_scripts_and_styles' );
 559  add_action( 'admin_enqueue_scripts', 'wp_localize_jquery_ui_datepicker', 1000 );
 560  add_action( 'admin_enqueue_scripts', 'wp_common_block_scripts_and_styles' );
 561  add_action( 'enqueue_block_assets', 'wp_enqueue_registered_block_scripts_and_styles' );
 562  add_action( 'enqueue_block_assets', 'enqueue_block_styles_assets', 30 );
 563  add_action( 'enqueue_block_editor_assets', 'wp_enqueue_registered_block_scripts_and_styles' );
 564  add_action( 'enqueue_block_editor_assets', 'enqueue_editor_block_styles_assets' );
 565  add_action( 'enqueue_block_editor_assets', 'wp_enqueue_editor_block_directory_assets' );
 566  add_action( 'enqueue_block_editor_assets', 'wp_enqueue_editor_format_library_assets' );
 567  add_action( 'enqueue_block_editor_assets', 'wp_enqueue_global_styles_css_custom_properties' );
 568  add_filter( 'wp_print_scripts', 'wp_just_in_time_script_localization' );
 569  add_filter( 'print_scripts_array', 'wp_prototype_before_jquery' );
 570  add_filter( 'customize_controls_print_styles', 'wp_resource_hints', 1 );
 571  add_action( 'admin_head', 'wp_check_widget_editor_deps' );
 572  
 573  // Global styles can be enqueued in both the header and the footer. See https://core.trac.wordpress.org/ticket/53494.
 574  add_action( 'wp_enqueue_scripts', 'wp_enqueue_global_styles' );
 575  add_action( 'wp_footer', 'wp_enqueue_global_styles', 1 );
 576  
 577  // SVG filters like duotone have to be loaded at the beginning of the body in both admin and the front-end.
 578  add_action( 'wp_body_open', 'wp_global_styles_render_svg_filters' );
 579  add_action( 'in_admin_header', 'wp_global_styles_render_svg_filters' );
 580  
 581  add_action( 'wp_default_styles', 'wp_default_styles' );
 582  add_filter( 'style_loader_src', 'wp_style_loader_src', 10, 2 );
 583  
 584  add_action( 'wp_head', 'wp_maybe_inline_styles', 1 ); // Run for styles enqueued in <head>.
 585  add_action( 'wp_footer', 'wp_maybe_inline_styles', 1 ); // Run for late-loaded styles in the footer.
 586  
 587  /*
 588   * Disable "Post Attributes" for wp_navigation post type. The attributes are
 589   * also conditionally enabled when a site has custom templates. Block Theme
 590   * templates can be available for every post type.
 591   */
 592  add_filter( 'theme_wp_navigation_templates', '__return_empty_array' );
 593  
 594  // Taxonomy.
 595  add_action( 'init', 'create_initial_taxonomies', 0 ); // Highest priority.
 596  add_action( 'change_locale', 'create_initial_taxonomies' );
 597  
 598  // Canonical.
 599  add_action( 'template_redirect', 'redirect_canonical' );
 600  add_action( 'template_redirect', 'wp_redirect_admin_locations', 1000 );
 601  
 602  // Shortcodes.
 603  add_filter( 'the_content', 'do_shortcode', 11 ); // AFTER wpautop().
 604  
 605  // Media.
 606  add_action( 'wp_playlist_scripts', 'wp_playlist_scripts' );
 607  add_action( 'customize_controls_enqueue_scripts', 'wp_plupload_default_settings' );
 608  add_action( 'plugins_loaded', '_wp_add_additional_image_sizes', 0 );
 609  add_filter( 'plupload_default_settings', 'wp_show_heic_upload_error' );
 610  
 611  // Nav menu.
 612  add_filter( 'nav_menu_item_id', '_nav_menu_item_id_use_once', 10, 2 );
 613  
 614  // Widgets.
 615  add_action( 'after_setup_theme', 'wp_setup_widgets_block_editor', 1 );
 616  add_action( 'init', 'wp_widgets_init', 1 );
 617  add_action( 'change_locale', array( 'WP_Widget_Media', 'reset_default_labels' ) );
 618  
 619  // Admin Bar.
 620  // Don't remove. Wrong way to disable.
 621  add_action( 'template_redirect', '_wp_admin_bar_init', 0 );
 622  add_action( 'admin_init', '_wp_admin_bar_init' );
 623  add_action( 'before_signup_header', '_wp_admin_bar_init' );
 624  add_action( 'activate_header', '_wp_admin_bar_init' );
 625  add_action( 'wp_body_open', 'wp_admin_bar_render', 0 );
 626  add_action( 'wp_footer', 'wp_admin_bar_render', 1000 ); // Back-compat for themes not using `wp_body_open`.
 627  add_action( 'in_admin_header', 'wp_admin_bar_render', 0 );
 628  
 629  // Former admin filters that can also be hooked on the front end.
 630  add_action( 'media_buttons', 'media_buttons' );
 631  add_filter( 'image_send_to_editor', 'image_add_caption', 20, 8 );
 632  add_filter( 'media_send_to_editor', 'image_media_send_to_editor', 10, 3 );
 633  
 634  // Embeds.
 635  add_action( 'rest_api_init', 'wp_oembed_register_route' );
 636  add_filter( 'rest_pre_serve_request', '_oembed_rest_pre_serve_request', 10, 4 );
 637  
 638  add_action( 'wp_head', 'wp_oembed_add_discovery_links' );
 639  add_action( 'wp_head', 'wp_oembed_add_host_js' ); // Back-compat for sites disabling oEmbed host JS by removing action.
 640  add_filter( 'embed_oembed_html', 'wp_maybe_enqueue_oembed_host_js' );
 641  
 642  add_action( 'embed_head', 'enqueue_embed_scripts', 1 );
 643  add_action( 'embed_head', 'print_emoji_detection_script' );
 644  add_action( 'embed_head', 'print_embed_styles' );
 645  add_action( 'embed_head', 'wp_print_head_scripts', 20 );
 646  add_action( 'embed_head', 'wp_print_styles', 20 );
 647  add_action( 'embed_head', 'wp_robots' );
 648  add_action( 'embed_head', 'rel_canonical' );
 649  add_action( 'embed_head', 'locale_stylesheet', 30 );
 650  
 651  add_action( 'embed_content_meta', 'print_embed_comments_button' );
 652  add_action( 'embed_content_meta', 'print_embed_sharing_button' );
 653  
 654  add_action( 'embed_footer', 'print_embed_sharing_dialog' );
 655  add_action( 'embed_footer', 'print_embed_scripts' );
 656  add_action( 'embed_footer', 'wp_print_footer_scripts', 20 );
 657  
 658  add_filter( 'excerpt_more', 'wp_embed_excerpt_more', 20 );
 659  add_filter( 'the_excerpt_embed', 'wptexturize' );
 660  add_filter( 'the_excerpt_embed', 'convert_chars' );
 661  add_filter( 'the_excerpt_embed', 'wpautop' );
 662  add_filter( 'the_excerpt_embed', 'shortcode_unautop' );
 663  add_filter( 'the_excerpt_embed', 'wp_embed_excerpt_attachment' );
 664  
 665  add_filter( 'oembed_dataparse', 'wp_filter_oembed_iframe_title_attribute', 5, 3 );
 666  add_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10, 3 );
 667  add_filter( 'oembed_response_data', 'get_oembed_response_data_rich', 10, 4 );
 668  add_filter( 'pre_oembed_result', 'wp_filter_pre_oembed_result', 10, 3 );
 669  
 670  // Capabilities.
 671  add_filter( 'user_has_cap', 'wp_maybe_grant_install_languages_cap', 1 );
 672  add_filter( 'user_has_cap', 'wp_maybe_grant_resume_extensions_caps', 1 );
 673  add_filter( 'user_has_cap', 'wp_maybe_grant_site_health_caps', 1, 4 );
 674  
 675  // Block templates post type and rendering.
 676  add_filter( 'render_block_context', '_block_template_render_without_post_block_context' );
 677  add_filter( 'pre_wp_unique_post_slug', 'wp_filter_wp_template_unique_post_slug', 10, 5 );
 678  add_action( 'save_post_wp_template_part', 'wp_set_unique_slug_on_create_template_part' );
 679  add_action( 'wp_footer', 'the_block_template_skip_link' );
 680  add_action( 'setup_theme', 'wp_enable_block_templates' );
 681  add_action( 'wp_loaded', '_add_template_loader_filters' );
 682  
 683  unset( $filter, $action );