1<?php
  2/**
  3 * WordPress Administration Bootstrap
  4 *
  5 * @package WordPress
  6 * @subpackage Administration
  7 */
  8
  9/**
 10 * In WordPress Administration Screens
 11 *
 12 * @since 2.3.2
 13 */
 14if ( ! defined( 'WP_ADMIN' ) ) {
 15	define( 'WP_ADMIN', true );
 16}
 17
 18if ( ! defined( 'WP_NETWORK_ADMIN' ) ) {
 19	define( 'WP_NETWORK_ADMIN', false );
 20}
 21
 22if ( ! defined( 'WP_USER_ADMIN' ) ) {
 23	define( 'WP_USER_ADMIN', false );
 24}
 25
 26if ( ! WP_NETWORK_ADMIN && ! WP_USER_ADMIN ) {
 27	define( 'WP_BLOG_ADMIN', true );
 28}
 29
 30if ( isset( $_GET['import'] ) && ! defined( 'WP_LOAD_IMPORTERS' ) ) {
 31	define( 'WP_LOAD_IMPORTERS', true );
 32}
 33
 34/** Load WordPress Bootstrap */
 35require_once dirname( __DIR__ ) . '/wp-load.php';
 36
 37nocache_headers();
 38
 39if ( get_option( 'db_upgraded' ) ) {
 40
 41	flush_rewrite_rules();
 42	update_option( 'db_upgraded', false, true );
 43
 44	/**
 45	 * Fires on the next page load after a successful DB upgrade.
 46	 *
 47	 * @since 2.8.0
 48	 */
 49	do_action( 'after_db_upgrade' );
 50
 51} elseif ( ! wp_doing_ajax() && empty( $_POST )
 52	&& (int) get_option( 'db_version' ) !== $wp_db_version
 53) {
 54
 55	if ( ! is_multisite() ) {
 56		wp_redirect( admin_url( 'upgrade.php?_wp_http_referer=' . urlencode( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) );
 57		exit;
 58	}
 59
 60	/**
 61	 * Filters whether to attempt to perform the multisite DB upgrade routine.
 62	 *
 63	 * In single site, the user would be redirected to wp-admin/upgrade.php.
 64	 * In multisite, the DB upgrade routine is automatically fired, but only
 65	 * when this filter returns true.
 66	 *
 67	 * If the network is 50 sites or less, it will run every time. Otherwise,
 68	 * it will throttle itself to reduce load.
 69	 *
 70	 * @since MU (3.0.0)
 71	 *
 72	 * @param bool $do_mu_upgrade Whether to perform the Multisite upgrade routine. Default true.
 73	 */
 74	if ( apply_filters( 'do_mu_upgrade', true ) ) {
 75		$blog_count = get_blog_count();
 76
 77		/*
 78		 * If there are 50 or fewer sites, run every time. Otherwise, throttle to reduce load:
 79		 * attempt to do no more than threshold value, with some +/- allowed.
 80		 */
 81		if ( $blog_count <= 50 || ( $blog_count > 50 && mt_rand( 0, (int) ( $blog_count / 50 ) ) === 1 ) ) {
 82			require_once ABSPATH . WPINC . '/http.php';
 83
 84			$response = wp_remote_get(
 85				admin_url( 'upgrade.php?step=1' ),
 86				array(
 87					'timeout'     => 120,
 88					'httpversion' => '1.1',
 89				)
 90			);
 91
 92			/** This action is documented in wp-admin/network/upgrade.php */
 93			do_action( 'after_mu_upgrade', $response );
 94
 95			unset( $response );
 96		}
 97
 98		unset( $blog_count );
 99	}
100}
101
102require_once ABSPATH . 'wp-admin/includes/admin.php';
103
104auth_redirect();
105
106// Schedule Trash collection.
107if ( ! wp_next_scheduled( 'wp_scheduled_delete' ) && ! wp_installing() ) {
108	wp_schedule_event( time(), 'daily', 'wp_scheduled_delete' );
109}
110
111// Schedule transient cleanup.
112if ( ! wp_next_scheduled( 'delete_expired_transients' ) && ! wp_installing() ) {
113	wp_schedule_event( time(), 'daily', 'delete_expired_transients' );
114}
115
116set_screen_options();
117
118$date_format = __( 'F j, Y' );
119$time_format = __( 'g:i a' );
120
121wp_enqueue_script( 'common' );
122
123/**
124 * $pagenow is set in vars.php.
125 * $wp_importers is sometimes set in wp-admin/includes/import.php.
126 * The remaining variables are imported as globals elsewhere, declared as globals here.
127 *
128 * @global string $pagenow      The filename of the current screen.
129 * @global array  $wp_importers
130 * @global string $hook_suffix
131 * @global string $plugin_page
132 * @global string $typenow      The post type of the current screen.
133 * @global string $taxnow       The taxonomy of the current screen.
134 */
135global $pagenow, $wp_importers, $hook_suffix, $plugin_page, $typenow, $taxnow;
136
137$page_hook = null;
138
139$editing = false;
140
141if ( isset( $_GET['page'] ) ) {
142	$plugin_page = wp_unslash( $_GET['page'] );
143	$plugin_page = plugin_basename( $plugin_page );
144}
145
146if ( isset( $_REQUEST['post_type'] ) && post_type_exists( $_REQUEST['post_type'] ) ) {
147	$typenow = $_REQUEST['post_type'];
148} else {
149	$typenow = '';
150}
151
152if ( isset( $_REQUEST['taxonomy'] ) && taxonomy_exists( $_REQUEST['taxonomy'] ) ) {
153	$taxnow = $_REQUEST['taxonomy'];
154} else {
155	$taxnow = '';
156}
157
158if ( WP_NETWORK_ADMIN ) {
159	require ABSPATH . 'wp-admin/network/menu.php';
160} elseif ( WP_USER_ADMIN ) {
161	require ABSPATH . 'wp-admin/user/menu.php';
162} else {
163	require ABSPATH . 'wp-admin/menu.php';
164}
165
166if ( current_user_can( 'manage_options' ) ) {
167	wp_raise_memory_limit( 'admin' );
168}
169
170/**
171 * Fires as an admin screen or script is being initialized.
172 *
173 * Note, this does not just run on user-facing admin screens.
174 * It runs on admin-ajax.php and admin-post.php as well.
175 *
176 * This is roughly analogous to the more general {@see 'init'} hook, which fires earlier.
177 *
178 * @since 2.5.0
179 */
180do_action( 'admin_init' );
181
182if ( isset( $plugin_page ) ) {
183	if ( ! empty( $typenow ) ) {
184		$the_parent = $pagenow . '?post_type=' . $typenow;
185	} else {
186		$the_parent = $pagenow;
187	}
188
189	$page_hook = get_plugin_page_hook( $plugin_page, $the_parent );
190	if ( ! $page_hook ) {
191		$page_hook = get_plugin_page_hook( $plugin_page, $plugin_page );
192
193		// Back-compat for plugins using add_management_page().
194		if ( empty( $page_hook ) && 'edit.php' === $pagenow && get_plugin_page_hook( $plugin_page, 'tools.php' ) ) {
195			// There could be plugin specific params on the URL, so we need the whole query string.
196			if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {
197				$query_string = $_SERVER['QUERY_STRING'];
198			} else {
199				$query_string = 'page=' . $plugin_page;
200			}
201			wp_redirect( admin_url( 'tools.php?' . $query_string ) );
202			exit;
203		}
204	}
205	unset( $the_parent );
206}
207
208$hook_suffix = '';
209if ( isset( $page_hook ) ) {
210	$hook_suffix = $page_hook;
211} elseif ( isset( $plugin_page ) ) {
212	$hook_suffix = $plugin_page;
213} elseif ( isset( $pagenow ) ) {
214	$hook_suffix = $pagenow;
215}
216
217set_current_screen();
218
219// Handle plugin admin pages.
220if ( isset( $plugin_page ) ) {
221	if ( $page_hook ) {
222		/**
223		 * Fires before a particular screen is loaded.
224		 *
225		 * The load-* hook fires in a number of contexts. This hook is for plugin screens
226		 * where a callback is provided when the screen is registered.
227		 *
228		 * The dynamic portion of the hook name, `$page_hook`, refers to a mixture of plugin
229		 * page information including:
230		 * 1. The page type. If the plugin page is registered as a submenu page, such as for
231		 *    Settings, the page type would be 'settings'. Otherwise the type is 'toplevel'.
232		 * 2. A separator of '_page_'.
233		 * 3. The plugin basename minus the file extension.
234		 *
235		 * Together, the three parts form the `$page_hook`. Citing the example above,
236		 * the hook name used would be 'load-settings_page_pluginbasename'.
237		 *
238		 * @see get_plugin_page_hook()
239		 *
240		 * @since 2.1.0
241		 */
242		do_action( "load-{$page_hook}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
243		if ( ! isset( $_GET['noheader'] ) ) {
244			require_once ABSPATH . 'wp-admin/admin-header.php';
245		}
246
247		/**
248		 * Used to call the registered callback for a plugin screen.
249		 *
250		 * This hook uses a dynamic hook name, `$page_hook`, which refers to a mixture of plugin
251		 * page information including:
252		 * 1. The page type. If the plugin page is registered as a submenu page, such as for
253		 *    Settings, the page type would be 'settings'. Otherwise the type is 'toplevel'.
254		 * 2. A separator of '_page_'.
255		 * 3. The plugin basename minus the file extension.
256		 *
257		 * Together, the three parts form the `$page_hook`. Citing the example above,
258		 * the hook name used would be 'settings_page_pluginbasename'.
259		 *
260		 * @see get_plugin_page_hook()
261		 *
262		 * @since 1.5.0
263		 */
264		do_action( $page_hook );
265	} else {
266		if ( validate_file( $plugin_page ) ) {
267			wp_die( __( 'Invalid plugin page.' ) );
268		}
269
270		if ( ! ( file_exists( WP_PLUGIN_DIR . "/$plugin_page" ) && is_file( WP_PLUGIN_DIR . "/$plugin_page" ) )
271			&& ! ( file_exists( WPMU_PLUGIN_DIR . "/$plugin_page" ) && is_file( WPMU_PLUGIN_DIR . "/$plugin_page" ) )
272		) {
273			/* translators: %s: Admin page generated by a plugin. */
274			wp_die( sprintf( __( 'Cannot load %s.' ), htmlentities( $plugin_page ) ) );
275		}
276
277		/**
278		 * Fires before a particular screen is loaded.
279		 *
280		 * The load-* hook fires in a number of contexts. This hook is for plugin screens
281		 * where the file to load is directly included, rather than the use of a function.
282		 *
283		 * The dynamic portion of the hook name, `$plugin_page`, refers to the plugin basename.
284		 *
285		 * @see plugin_basename()
286		 *
287		 * @since 1.5.0
288		 */
289		do_action( "load-{$plugin_page}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
290
291		if ( ! isset( $_GET['noheader'] ) ) {
292			require_once ABSPATH . 'wp-admin/admin-header.php';
293		}
294
295		if ( file_exists( WPMU_PLUGIN_DIR . "/$plugin_page" ) ) {
296			include WPMU_PLUGIN_DIR . "/$plugin_page";
297		} else {
298			include WP_PLUGIN_DIR . "/$plugin_page";
299		}
300	}
301
302	require_once ABSPATH . 'wp-admin/admin-footer.php';
303
304	exit;
305} elseif ( isset( $_GET['import'] ) ) {
306
307	$importer = $_GET['import'];
308
309	if ( ! current_user_can( 'import' ) ) {
310		wp_die( __( 'Sorry, you are not allowed to import content into this site.' ) );
311	}
312
313	if ( validate_file( $importer ) ) {
314		wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );
315		exit;
316	}
317
318	if ( ! isset( $wp_importers[ $importer ] ) || ! is_callable( $wp_importers[ $importer ][2] ) ) {
319		wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );
320		exit;
321	}
322
323	/**
324	 * Fires before an importer screen is loaded.
325	 *
326	 * The dynamic portion of the hook name, `$importer`, refers to the importer slug.
327	 *
328	 * Possible hook names include:
329	 *
330	 *  - `load-importer-blogger`
331	 *  - `load-importer-wpcat2tag`
332	 *  - `load-importer-livejournal`
333	 *  - `load-importer-mt`
334	 *  - `load-importer-rss`
335	 *  - `load-importer-tumblr`
336	 *  - `load-importer-wordpress`
337	 *
338	 * @since 3.5.0
339	 */
340	do_action( "load-importer-{$importer}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
341
342	// Used in the HTML title tag.
343	$title        = __( 'Import' );
344	$parent_file  = 'tools.php';
345	$submenu_file = 'import.php';
346
347	if ( ! isset( $_GET['noheader'] ) ) {
348		require_once ABSPATH . 'wp-admin/admin-header.php';
349	}
350
351	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
352
353	define( 'WP_IMPORTING', true );
354
355	/**
356	 * Filters whether to filter imported data through kses on import.
357	 *
358	 * Multisite uses this hook to filter all data through kses by default,
359	 * as a super administrator may be assisting an untrusted user.
360	 *
361	 * @since 3.1.0
362	 *
363	 * @param bool $force Whether to force data to be filtered through kses. Default false.
364	 */
365	if ( apply_filters( 'force_filtered_html_on_import', false ) ) {
366		kses_init_filters();  // Always filter imported data with kses on multisite.
367	}
368
369	call_user_func( $wp_importers[ $importer ][2] );
370
371	require_once ABSPATH . 'wp-admin/admin-footer.php';
372
373	// Make sure rules are flushed.
374	flush_rewrite_rules( false );
375
376	exit;
377} else {
378	/**
379	 * Fires before a particular screen is loaded.
380	 *
381	 * The load-* hook fires in a number of contexts. This hook is for core screens.
382	 *
383	 * The dynamic portion of the hook name, `$pagenow`, is a global variable
384	 * referring to the filename of the current screen, such as 'admin.php',
385	 * 'post-new.php' etc. A complete hook for the latter would be
386	 * 'load-post-new.php'.
387	 *
388	 * @since 2.1.0
389	 */
390	do_action( "load-{$pagenow}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
391
392	/*
393	 * The following hooks are fired to ensure backward compatibility.
394	 * In all other cases, 'load-' . $pagenow should be used instead.
395	 */
396	if ( 'page' === $typenow ) {
397		if ( 'post-new.php' === $pagenow ) {
398			do_action( 'load-page-new.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
399		} elseif ( 'post.php' === $pagenow ) {
400			do_action( 'load-page.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
401		}
402	} elseif ( 'edit-tags.php' === $pagenow ) {
403		if ( 'category' === $taxnow ) {
404			do_action( 'load-categories.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
405		} elseif ( 'link_category' === $taxnow ) {
406			do_action( 'load-edit-link-categories.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
407		}
408	} elseif ( 'term.php' === $pagenow ) {
409		do_action( 'load-edit-tags.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
410	}
411}
412
413if ( ! empty( $_REQUEST['action'] ) ) {
414	$action = $_REQUEST['action'];
415
416	/**
417	 * Fires when an 'action' request variable is sent.
418	 *
419	 * The dynamic portion of the hook name, `$action`, refers to
420	 * the action derived from the `GET` or `POST` request.
421	 *
422	 * @since 2.6.0
423	 */
424	do_action( "admin_action_{$action}" );
425}
426