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/wp-admin/update-core.php

https://gitlab.com/bernalesjasper/Auto-repair
PHP | 659 lines | 520 code | 92 blank | 47 comment | 139 complexity | ca6452f3f58302707a0943d219b46ea1 MD5 | raw file
  1<?php
  2/**
  3 * Update Core administration panel.
  4 *
  5 * @package WordPress
  6 * @subpackage Administration
  7 */
  8
  9/** WordPress Administration Bootstrap */
 10require_once( dirname( __FILE__ ) . '/admin.php' );
 11
 12wp_enqueue_style( 'plugin-install' );
 13wp_enqueue_script( 'plugin-install' );
 14wp_enqueue_script( 'updates' );
 15add_thickbox();
 16
 17if ( is_multisite() && ! is_network_admin() ) {
 18	wp_redirect( network_admin_url( 'update-core.php' ) );
 19	exit();
 20}
 21
 22if ( ! current_user_can( 'update_core' ) && ! current_user_can( 'update_themes' ) && ! current_user_can( 'update_plugins' ) )
 23	wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
 24
 25function list_core_update( $update ) {
 26 	global $wp_local_package, $wpdb, $wp_version;
 27  	static $first_pass = true;
 28
 29 	if ( 'en_US' == $update->locale && 'en_US' == get_locale() )
 30 		$version_string = $update->current;
 31 	// If the only available update is a partial builds, it doesn't need a language-specific version string.
 32 	elseif ( 'en_US' == $update->locale && $update->packages->partial && $wp_version == $update->partial_version && ( $updates = get_core_updates() ) && 1 == count( $updates ) )
 33 		$version_string = $update->current;
 34 	else
 35 		$version_string = sprintf( "%s&ndash;<strong>%s</strong>", $update->current, $update->locale );
 36
 37	$current = false;
 38	if ( !isset($update->response) || 'latest' == $update->response )
 39		$current = true;
 40	$submit = __('Update Now');
 41	$form_action = 'update-core.php?action=do-core-upgrade';
 42	$php_version    = phpversion();
 43	$mysql_version  = $wpdb->db_version();
 44	$show_buttons = true;
 45	if ( 'development' == $update->response ) {
 46		$message = __('You are using a development version of WordPress. You can update to the latest nightly build automatically or download the nightly build and install it manually:');
 47		$download = __('Download nightly build');
 48	} else {
 49		if ( $current ) {
 50			$message = sprintf( __( 'If you need to re-install version %s, you can do so here or download the package and re-install manually:' ), $version_string );
 51			$submit = __('Re-install Now');
 52			$form_action = 'update-core.php?action=do-core-reinstall';
 53		} else {
 54			$php_compat     = version_compare( $php_version, $update->php_version, '>=' );
 55			if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) )
 56				$mysql_compat = true;
 57			else
 58				$mysql_compat = version_compare( $mysql_version, $update->mysql_version, '>=' );
 59
 60			if ( !$mysql_compat && !$php_compat )
 61				$message = sprintf( __('You cannot update because <a href="http://codex.wordpress.org/Version_%1$s">WordPress %1$s</a> requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.'), $update->current, $update->php_version, $update->mysql_version, $php_version, $mysql_version );
 62			elseif ( !$php_compat )
 63				$message = sprintf( __('You cannot update because <a href="http://codex.wordpress.org/Version_%1$s">WordPress %1$s</a> requires PHP version %2$s or higher. You are running version %3$s.'), $update->current, $update->php_version, $php_version );
 64			elseif ( !$mysql_compat )
 65				$message = sprintf( __('You cannot update because <a href="http://codex.wordpress.org/Version_%1$s">WordPress %1$s</a> requires MySQL version %2$s or higher. You are running version %3$s.'), $update->current, $update->mysql_version, $mysql_version );
 66			else
 67				$message = 	sprintf(__('You can update to <a href="http://codex.wordpress.org/Version_%1$s">WordPress %2$s</a> automatically or download the package and install it manually:'), $update->current, $version_string);
 68			if ( !$mysql_compat || !$php_compat )
 69				$show_buttons = false;
 70		}
 71		$download = sprintf(__('Download %s'), $version_string);
 72	}
 73
 74	echo '<p>';
 75	echo $message;
 76	echo '</p>';
 77	echo '<form method="post" action="' . $form_action . '" name="upgrade" class="upgrade">';
 78	wp_nonce_field('upgrade-core');
 79	echo '<p>';
 80	echo '<input name="version" value="'. esc_attr($update->current) .'" type="hidden"/>';
 81	echo '<input name="locale" value="'. esc_attr($update->locale) .'" type="hidden"/>';
 82	if ( $show_buttons ) {
 83		if ( $first_pass ) {
 84			submit_button( $submit, $current ? 'button' : 'primary regular', 'upgrade', false );
 85			$first_pass = false;
 86		} else {
 87			submit_button( $submit, 'button', 'upgrade', false );
 88		}
 89		echo '&nbsp;<a href="' . esc_url( $update->download ) . '" class="button">' . $download . '</a>&nbsp;';
 90	}
 91	if ( 'en_US' != $update->locale )
 92		if ( !isset( $update->dismissed ) || !$update->dismissed )
 93			submit_button( __('Hide this update'), 'button', 'dismiss', false );
 94		else
 95			submit_button( __('Bring back this update'), 'button', 'undismiss', false );
 96	echo '</p>';
 97	if ( 'en_US' != $update->locale && ( !isset($wp_local_package) || $wp_local_package != $update->locale ) )
 98	    echo '<p class="hint">'.__('This localized version contains both the translation and various other localization fixes. You can skip upgrading if you want to keep your current translation.').'</p>';
 99	// Partial builds don't need language-specific warnings.
100	elseif ( 'en_US' == $update->locale && get_locale() != 'en_US' && ( ! $update->packages->partial && $wp_version == $update->partial_version ) ) {
101	    echo '<p class="hint">'.sprintf( __('You are about to install WordPress %s <strong>in English (US).</strong> There is a chance this update will break your translation. You may prefer to wait for the localized version to be released.'), $update->response != 'development' ? $update->current : '' ).'</p>';
102	}
103	echo '</form>';
104
105}
106
107function dismissed_updates() {
108	$dismissed = get_core_updates( array( 'dismissed' => true, 'available' => false ) );
109	if ( $dismissed ) {
110
111		$show_text = esc_js(__('Show hidden updates'));
112		$hide_text = esc_js(__('Hide hidden updates'));
113	?>
114	<script type="text/javascript">
115
116		jQuery(function($) {
117			$('dismissed-updates').show();
118			$('#show-dismissed').toggle(function(){$(this).text('<?php echo $hide_text; ?>');}, function() {$(this).text('<?php echo $show_text; ?>')});
119			$('#show-dismissed').click(function() { $('#dismissed-updates').toggle('slow');});
120		});
121	</script>
122	<?php
123		echo '<p class="hide-if-no-js"><a id="show-dismissed" href="#">'.__('Show hidden updates').'</a></p>';
124		echo '<ul id="dismissed-updates" class="core-updates dismissed">';
125		foreach( (array) $dismissed as $update) {
126			echo '<li>';
127			list_core_update( $update );
128			echo '</li>';
129		}
130		echo '</ul>';
131	}
132}
133
134/**
135 * Display upgrade WordPress for downloading latest or upgrading automatically form.
136 *
137 * @since 2.7.0
138 *
139 * @return null
140 */
141function core_upgrade_preamble() {
142	global $wp_version, $required_php_version, $required_mysql_version;
143
144	$updates = get_core_updates();
145
146	if ( !isset($updates[0]->response) || 'latest' == $updates[0]->response ) {
147		echo '<h3>';
148		_e('You have the latest version of WordPress.');
149
150		if ( wp_http_supports( array( 'ssl' ) ) ) {
151			require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
152			$upgrader = new WP_Automatic_Updater;
153			$future_minor_update = (object) array(
154				'current'       => $wp_version . '.1.next.minor',
155				'version'       => $wp_version . '.1.next.minor',
156				'php_version'   => $required_php_version,
157				'mysql_version' => $required_mysql_version,
158			);
159			$should_auto_update = $upgrader->should_update( 'core', $future_minor_update, ABSPATH );
160			if ( $should_auto_update )
161				echo ' ' . __( 'Future security updates will be applied automatically.' );
162		}
163		echo '</h3>';
164	} else {
165		echo '<div class="updated inline"><p>';
166		_e('<strong>Important:</strong> before updating, please <a href="http://codex.wordpress.org/WordPress_Backups">back up your database and files</a>. For help with updates, visit the <a href="http://codex.wordpress.org/Updating_WordPress">Updating WordPress</a> Codex page.');
167		echo '</p></div>';
168
169		echo '<h3 class="response">';
170		_e( 'An updated version of WordPress is available.' );
171		echo '</h3>';
172	}
173
174	if ( isset( $updates[0] ) && $updates[0]->response == 'development' ) {
175		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
176		$upgrader = new WP_Automatic_Updater;
177		if ( wp_http_supports( 'ssl' ) && $upgrader->should_update( 'core', $updates[0], ABSPATH ) ) {
178			echo '<div class="updated inline"><p>';
179			echo '<strong>' . __( 'BETA TESTERS:' ) . '</strong> ' . __( 'This site is set up to install updates of future beta versions automatically.' );
180			echo '</p></div>';
181		}
182	}
183
184	echo '<ul class="core-updates">';
185	foreach( (array) $updates as $update ) {
186		echo '<li>';
187		list_core_update( $update );
188		echo '</li>';
189	}
190	echo '</ul>';
191	// Don't show the maintenance mode notice when we are only showing a single re-install option.
192	if ( $updates && ( count( $updates ) > 1 || $updates[0]->response != 'latest' ) ) {
193		echo '<p>' . __( 'While your site is being updated, it will be in maintenance mode. As soon as your updates are complete, your site will return to normal.' ) . '</p>';
194	} elseif ( ! $updates ) {
195		list( $normalized_version ) = explode( '-', $wp_version );
196		echo '<p>' . sprintf( __( '<a href="%s">Learn more about WordPress %s</a>.' ), esc_url( self_admin_url( 'about.php' ) ), $normalized_version ) . '</p>';
197	}
198	dismissed_updates();
199}
200
201function list_plugin_updates() {
202	global $wp_version;
203
204	$cur_wp_version = preg_replace('/-.*$/', '', $wp_version);
205
206	require_once(ABSPATH . 'wp-admin/includes/plugin-install.php');
207	$plugins = get_plugin_updates();
208	if ( empty( $plugins ) ) {
209		echo '<h3>' . __( 'Plugins' ) . '</h3>';
210		echo '<p>' . __( 'Your plugins are all up to date.' ) . '</p>';
211		return;
212	}
213	$form_action = 'update-core.php?action=do-plugin-upgrade';
214
215	$core_updates = get_core_updates();
216	if ( !isset($core_updates[0]->response) || 'latest' == $core_updates[0]->response || 'development' == $core_updates[0]->response || version_compare( $core_updates[0]->current, $cur_wp_version, '=') )
217		$core_update_version = false;
218	else
219		$core_update_version = $core_updates[0]->current;
220	?>
221<h3><?php _e( 'Plugins' ); ?></h3>
222<p><?php _e( 'The following plugins have new versions available. Check the ones you want to update and then click &#8220;Update Plugins&#8221;.' ); ?></p>
223<form method="post" action="<?php echo esc_url( $form_action ); ?>" name="upgrade-plugins" class="upgrade">
224<?php wp_nonce_field('upgrade-core'); ?>
225<p><input id="upgrade-plugins" class="button" type="submit" value="<?php esc_attr_e('Update Plugins'); ?>" name="upgrade" /></p>
226<table class="widefat" id="update-plugins-table">
227	<thead>
228	<tr>
229		<th scope="col" class="manage-column check-column"><input type="checkbox" id="plugins-select-all" /></th>
230		<th scope="col" class="manage-column"><label for="plugins-select-all"><?php _e('Select All'); ?></label></th>
231	</tr>
232	</thead>
233
234	<tfoot>
235	<tr>
236		<th scope="col" class="manage-column check-column"><input type="checkbox" id="plugins-select-all-2" /></th>
237		<th scope="col" class="manage-column"><label for="plugins-select-all-2"><?php _e('Select All'); ?></label></th>
238	</tr>
239	</tfoot>
240	<tbody class="plugins">
241<?php
242	foreach ( (array) $plugins as $plugin_file => $plugin_data) {
243		$info = plugins_api('plugin_information', array('slug' => $plugin_data->update->slug ));
244		if ( is_wp_error( $info ) ) {
245			$info = false;
246		}
247
248		// Get plugin compat for running version of WordPress.
249		if ( isset($info->tested) && version_compare($info->tested, $cur_wp_version, '>=') ) {
250			$compat = '<br />' . sprintf(__('Compatibility with WordPress %1$s: 100%% (according to its author)'), $cur_wp_version);
251		} elseif ( isset($info->compatibility[$cur_wp_version][$plugin_data->update->new_version]) ) {
252			$compat = $info->compatibility[$cur_wp_version][$plugin_data->update->new_version];
253			$compat = '<br />' . sprintf(__('Compatibility with WordPress %1$s: %2$d%% (%3$d "works" votes out of %4$d total)'), $cur_wp_version, $compat[0], $compat[2], $compat[1]);
254		} else {
255			$compat = '<br />' . sprintf(__('Compatibility with WordPress %1$s: Unknown'), $cur_wp_version);
256		}
257		// Get plugin compat for updated version of WordPress.
258		if ( $core_update_version ) {
259			if ( isset($info->compatibility[$core_update_version][$plugin_data->update->new_version]) ) {
260				$update_compat = $info->compatibility[$core_update_version][$plugin_data->update->new_version];
261				$compat .= '<br />' . sprintf(__('Compatibility with WordPress %1$s: %2$d%% (%3$d "works" votes out of %4$d total)'), $core_update_version, $update_compat[0], $update_compat[2], $update_compat[1]);
262			} else {
263				$compat .= '<br />' . sprintf(__('Compatibility with WordPress %1$s: Unknown'), $core_update_version);
264			}
265		}
266		// Get the upgrade notice for the new plugin version.
267		if ( isset($plugin_data->update->upgrade_notice) ) {
268			$upgrade_notice = '<br />' . strip_tags($plugin_data->update->upgrade_notice);
269		} else {
270			$upgrade_notice = '';
271		}
272
273		$details_url = self_admin_url('plugin-install.php?tab=plugin-information&plugin=' . $plugin_data->update->slug . '&section=changelog&TB_iframe=true&width=640&height=662');
274		$details_text = sprintf(__('View version %1$s details'), $plugin_data->update->new_version);
275		$details = sprintf('<a href="%1$s" class="thickbox" title="%2$s">%3$s</a>.', esc_url($details_url), esc_attr($plugin_data->Name), $details_text);
276
277		echo "
278	<tr>
279		<th scope='row' class='check-column'><input type='checkbox' name='checked[]' value='" . esc_attr($plugin_file) . "' /></th>
280		<td><p><strong>{$plugin_data->Name}</strong><br />" . sprintf(__('You have version %1$s installed. Update to %2$s.'), $plugin_data->Version, $plugin_data->update->new_version) . ' ' . $details . $compat . $upgrade_notice . "</p></td>
281	</tr>";
282	}
283?>
284	</tbody>
285</table>
286<p><input id="upgrade-plugins-2" class="button" type="submit" value="<?php esc_attr_e('Update Plugins'); ?>" name="upgrade" /></p>
287</form>
288<?php
289}
290
291function list_theme_updates() {
292	$themes = get_theme_updates();
293	if ( empty( $themes ) ) {
294		echo '<h3>' . __( 'Themes' ) . '</h3>';
295		echo '<p>' . __( 'Your themes are all up to date.' ) . '</p>';
296		return;
297	}
298
299	$form_action = 'update-core.php?action=do-theme-upgrade';
300
301?>
302<h3><?php _e( 'Themes' ); ?></h3>
303<p><?php _e( 'The following themes have new versions available. Check the ones you want to update and then click &#8220;Update Themes&#8221;.' ); ?></p>
304<p><?php printf( __( '<strong>Please Note:</strong> Any customizations you have made to theme files will be lost. Please consider using <a href="%s">child themes</a> for modifications.' ), __( 'http://codex.wordpress.org/Child_Themes' ) ); ?></p>
305<form method="post" action="<?php echo esc_url( $form_action ); ?>" name="upgrade-themes" class="upgrade">
306<?php wp_nonce_field('upgrade-core'); ?>
307<p><input id="upgrade-themes" class="button" type="submit" value="<?php esc_attr_e('Update Themes'); ?>" name="upgrade" /></p>
308<table class="widefat" id="update-themes-table">
309	<thead>
310	<tr>
311		<th scope="col" class="manage-column check-column"><input type="checkbox" id="themes-select-all" /></th>
312		<th scope="col" class="manage-column"><label for="themes-select-all"><?php _e('Select All'); ?></label></th>
313	</tr>
314	</thead>
315
316	<tfoot>
317	<tr>
318		<th scope="col" class="manage-column check-column"><input type="checkbox" id="themes-select-all-2" /></th>
319		<th scope="col" class="manage-column"><label for="themes-select-all-2"><?php _e('Select All'); ?></label></th>
320	</tr>
321	</tfoot>
322	<tbody class="plugins">
323<?php
324	foreach ( $themes as $stylesheet => $theme ) {
325		echo "
326	<tr>
327		<th scope='row' class='check-column'><input type='checkbox' name='checked[]' value='" . esc_attr( $stylesheet ) . "' /></th>
328		<td class='plugin-title'><img src='" . esc_url( $theme->get_screenshot() ) . "' width='85' height='64' style='float:left; padding: 0 5px 5px' /><strong>" . $theme->display('Name') . '</strong> ' . sprintf( __( 'You have version %1$s installed. Update to %2$s.' ), $theme->display('Version'), $theme->update['new_version'] ) . "</td>
329	</tr>";
330	}
331?>
332	</tbody>
333</table>
334<p><input id="upgrade-themes-2" class="button" type="submit" value="<?php esc_attr_e('Update Themes'); ?>" name="upgrade" /></p>
335</form>
336<?php
337}
338
339function list_translation_updates() {
340	$updates = wp_get_translation_updates();
341	if ( ! $updates ) {
342		if ( 'en_US' != get_locale() ) {
343			echo '<h3>' . __( 'Translations' ) . '</h3>';
344			echo '<p>' . __( 'Your translations are all up to date.' ) . '</p>';
345		}
346		return;
347	}
348
349	$form_action = 'update-core.php?action=do-translation-upgrade';
350	?>
351	<h3><?php _e( 'Translations' ); ?></h3>
352	<form method="post" action="<?php echo esc_url( $form_action ); ?>" name="upgrade-translations" class="upgrade">
353		<p><?php _e( 'Some of your translations are out of date.' ); ?></p>
354		<?php wp_nonce_field( 'upgrade-translations' ); ?>
355		<p><input class="button" type="submit" value="<?php esc_attr_e( 'Update Translations' ); ?>" name="upgrade" /></p>
356	</form>
357	<?php
358}
359
360/**
361 * Upgrade WordPress core display.
362 *
363 * @since 2.7.0
364 *
365 * @return null
366 */
367function do_core_upgrade( $reinstall = false ) {
368	global $wp_filesystem;
369
370	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
371
372	if ( $reinstall )
373		$url = 'update-core.php?action=do-core-reinstall';
374	else
375		$url = 'update-core.php?action=do-core-upgrade';
376	$url = wp_nonce_url($url, 'upgrade-core');
377
378	$version = isset( $_POST['version'] )? $_POST['version'] : false;
379	$locale = isset( $_POST['locale'] )? $_POST['locale'] : 'en_US';
380	$update = find_core_update( $version, $locale );
381	if ( !$update )
382		return;
383
384	// Allow relaxed file ownership writes for User-initiated upgrades when the API specifies
385	// that it's safe to do so. This only happens when there are no new files to create.
386	$allow_relaxed_file_ownership = ! $reinstall && isset( $update->new_files ) && ! $update->new_files;
387
388?>
389	<div class="wrap">
390	<h2><?php _e('Update WordPress'); ?></h2>
391<?php
392
393	if ( false === ( $credentials = request_filesystem_credentials( $url, '', false, ABSPATH, array(), $allow_relaxed_file_ownership ) ) ) {
394		echo '</div>';
395		return;
396	}
397
398	if ( ! WP_Filesystem( $credentials, ABSPATH, $allow_relaxed_file_ownership ) ) {
399		// Failed to connect, Error and request again
400		request_filesystem_credentials( $url, '', true, ABSPATH, array(), $allow_relaxed_file_ownership );
401		echo '</div>';
402		return;
403	}
404
405	if ( $wp_filesystem->errors->get_error_code() ) {
406		foreach ( $wp_filesystem->errors->get_error_messages() as $message )
407			show_message($message);
408		echo '</div>';
409		return;
410	}
411
412	if ( $reinstall )
413		$update->response = 'reinstall';
414
415	add_filter( 'update_feedback', 'show_message' );
416
417	$upgrader = new Core_Upgrader();
418	$result = $upgrader->upgrade( $update, array(
419		'allow_relaxed_file_ownership' => $allow_relaxed_file_ownership
420	) );
421
422	if ( is_wp_error($result) ) {
423		show_message($result);
424		if ('up_to_date' != $result->get_error_code() )
425			show_message( __('Installation Failed') );
426		echo '</div>';
427		return;
428	}
429
430	show_message( __('WordPress updated successfully') );
431	show_message( '<span class="hide-if-no-js">' . sprintf( __( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%2$s">here</a>.' ), $result, esc_url( self_admin_url( 'about.php?updated' ) ) ) . '</span>' );
432	show_message( '<span class="hide-if-js">' . sprintf( __( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ), $result, esc_url( self_admin_url( 'about.php?updated' ) ) ) . '</span>' );
433	?>
434	</div>
435	<script type="text/javascript">
436	window.location = '<?php echo self_admin_url( 'about.php?updated' ); ?>';
437	</script>
438	<?php
439}
440
441function do_dismiss_core_update() {
442	$version = isset( $_POST['version'] )? $_POST['version'] : false;
443	$locale = isset( $_POST['locale'] )? $_POST['locale'] : 'en_US';
444	$update = find_core_update( $version, $locale );
445	if ( !$update )
446		return;
447	dismiss_core_update( $update );
448	wp_redirect( wp_nonce_url('update-core.php?action=upgrade-core', 'upgrade-core') );
449	exit;
450}
451
452function do_undismiss_core_update() {
453	$version = isset( $_POST['version'] )? $_POST['version'] : false;
454	$locale = isset( $_POST['locale'] )? $_POST['locale'] : 'en_US';
455	$update = find_core_update( $version, $locale );
456	if ( !$update )
457		return;
458	undismiss_core_update( $version, $locale );
459	wp_redirect( wp_nonce_url('update-core.php?action=upgrade-core', 'upgrade-core') );
460	exit;
461}
462
463$action = isset($_GET['action']) ? $_GET['action'] : 'upgrade-core';
464
465$upgrade_error = false;
466if ( ( 'do-theme-upgrade' == $action || ( 'do-plugin-upgrade' == $action && ! isset( $_GET['plugins'] ) ) )
467	&& ! isset( $_POST['checked'] ) ) {
468	$upgrade_error = $action == 'do-theme-upgrade' ? 'themes' : 'plugins';
469	$action = 'upgrade-core';
470}
471
472$title = __('WordPress Updates');
473$parent_file = 'index.php';
474
475$updates_overview  = '<p>' . __( 'On this screen, you can update to the latest version of WordPress, as well as update your themes and plugins from the WordPress.org repositories.' ) . '</p>';
476$updates_overview .= '<p>' . __( 'If an update is available, you&#8127;ll see a notification appear in the Toolbar and navigation menu.' ) . ' ' . __( 'Keeping your site updated is important for security. It also makes the internet a safer place for you and your readers.' ) . '</p>';
477
478get_current_screen()->add_help_tab( array(
479	'id'      => 'overview',
480	'title'   => __( 'Overview' ),
481	'content' => $updates_overview
482) );
483
484$updates_howto  = '<p>' . __( '<strong>WordPress</strong> &mdash; Updating your WordPress installation is a simple one-click procedure: just <strong>click on the &#8220;Update Now&#8221; button</strong> when you are notified that a new version is available.' ) . ' ' . __( 'In most cases, WordPress will automatically apply maintenance and security updates in the background for you.' ) . '</p>';
485$updates_howto .= '<p>' . __( '<strong>Themes and Plugins</strong> &mdash; To update individual themes or plugins from this screen, use the checkboxes to make your selection, then <strong>click on the appropriate &#8220;Update&#8221; button</strong>. To update all of your themes or plugins at once, you can check the box at the top of the section to select all before clicking the update button.' ) . '</p>';
486
487if ( 'en_US' != get_locale() ) {
488	$updates_howto .= '<p>' . __( '<strong>Translations</strong> &mdash; The files translating WordPress into your language are updated for you whenever any other updates occur. But if these files are out of date, you can <strong>click the &#8220;Update Translations&#8221;</strong> button.' ) . '</p>';
489}
490
491get_current_screen()->add_help_tab( array(
492	'id'      => 'how-to-update',
493	'title'   => __( 'How to Update' ),
494	'content' => $updates_howto
495) );
496
497get_current_screen()->set_help_sidebar(
498	'<p><strong>' . __('For more information:') . '</strong></p>' .
499	'<p>' . __( '<a href="http://codex.wordpress.org/Dashboard_Updates_Screen" target="_blank">Documentation on Updating WordPress</a>' ) . '</p>' .
500	'<p>' . __( '<a href="https://wordpress.org/support/" target="_blank">Support Forums</a>' ) . '</p>'
501);
502
503if ( 'upgrade-core' == $action ) {
504	// Force a update check when requested
505	$force_check = ! empty( $_GET['force-check'] );
506	wp_version_check( array(), $force_check );
507
508	require_once(ABSPATH . 'wp-admin/admin-header.php');
509	?>
510	<div class="wrap">
511	<h2><?php _e('WordPress Updates'); ?></h2>
512	<?php
513	if ( $upgrade_error ) {
514		echo '<div class="error"><p>';
515		if ( $upgrade_error == 'themes' )
516			_e('Please select one or more themes to update.');
517		else
518			_e('Please select one or more plugins to update.');
519		echo '</p></div>';
520	}
521
522	echo '<p>';
523	/* translators: %1 date, %2 time. */
524	printf( __('Last checked on %1$s at %2$s.'), date_i18n( get_option( 'date_format' ) ), date_i18n( get_option( 'time_format' ) ) );
525	echo ' &nbsp; <a class="button" href="' . esc_url( self_admin_url('update-core.php?force-check=1') ) . '">' . __( 'Check Again' ) . '</a>';
526	echo '</p>';
527
528	if ( $core = current_user_can( 'update_core' ) )
529		core_upgrade_preamble();
530	if ( $plugins = current_user_can( 'update_plugins' ) )
531		list_plugin_updates();
532	if ( $themes = current_user_can( 'update_themes' ) )
533		list_theme_updates();
534	if ( $core || $plugins || $themes )
535		list_translation_updates();
536	unset( $core, $plugins, $themes );
537	/**
538	 * Fires after the core, plugin, and theme update tables.
539	 *
540	 * @since 2.9.0
541	 */
542	do_action( 'core_upgrade_preamble' );
543	echo '</div>';
544	include(ABSPATH . 'wp-admin/admin-footer.php');
545
546} elseif ( 'do-core-upgrade' == $action || 'do-core-reinstall' == $action ) {
547
548	if ( ! current_user_can( 'update_core' ) )
549		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
550
551	check_admin_referer('upgrade-core');
552
553	// Do the (un)dismiss actions before headers, so that they can redirect.
554	if ( isset( $_POST['dismiss'] ) )
555		do_dismiss_core_update();
556	elseif ( isset( $_POST['undismiss'] ) )
557		do_undismiss_core_update();
558
559	require_once(ABSPATH . 'wp-admin/admin-header.php');
560	if ( 'do-core-reinstall' == $action )
561		$reinstall = true;
562	else
563		$reinstall = false;
564
565	if ( isset( $_POST['upgrade'] ) )
566		do_core_upgrade($reinstall);
567
568	include(ABSPATH . 'wp-admin/admin-footer.php');
569
570} elseif ( 'do-plugin-upgrade' == $action ) {
571
572	if ( ! current_user_can( 'update_plugins' ) )
573		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
574
575	check_admin_referer('upgrade-core');
576
577	if ( isset( $_GET['plugins'] ) ) {
578		$plugins = explode( ',', $_GET['plugins'] );
579	} elseif ( isset( $_POST['checked'] ) ) {
580		$plugins = (array) $_POST['checked'];
581	} else {
582		wp_redirect( admin_url('update-core.php') );
583		exit;
584	}
585
586	$url = 'update.php?action=update-selected&plugins=' . urlencode(implode(',', $plugins));
587	$url = wp_nonce_url($url, 'bulk-update-plugins');
588
589	$title = __('Update Plugins');
590
591	require_once(ABSPATH . 'wp-admin/admin-header.php');
592	echo '<div class="wrap">';
593	echo '<h2>' . esc_html__('Update Plugins') . '</h2>';
594	echo '<iframe src="', $url, '" style="width: 100%; height: 100%; min-height: 750px;" frameborder="0"></iframe>';
595	echo '</div>';
596	include(ABSPATH . 'wp-admin/admin-footer.php');
597
598} elseif ( 'do-theme-upgrade' == $action ) {
599
600	if ( ! current_user_can( 'update_themes' ) )
601		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
602
603	check_admin_referer('upgrade-core');
604
605	if ( isset( $_GET['themes'] ) ) {
606		$themes = explode( ',', $_GET['themes'] );
607	} elseif ( isset( $_POST['checked'] ) ) {
608		$themes = (array) $_POST['checked'];
609	} else {
610		wp_redirect( admin_url('update-core.php') );
611		exit;
612	}
613
614	$url = 'update.php?action=update-selected-themes&themes=' . urlencode(implode(',', $themes));
615	$url = wp_nonce_url($url, 'bulk-update-themes');
616
617	$title = __('Update Themes');
618
619	require_once(ABSPATH . 'wp-admin/admin-header.php');
620	?>
621	<div class="wrap">
622		<h2><?php echo esc_html__('Update Themes') ?></h2>
623		<iframe src="<?php echo $url ?>" style="width: 100%; height: 100%; min-height: 750px;" frameborder="0"></iframe>
624	</div>
625	<?php
626	include(ABSPATH . 'wp-admin/admin-footer.php');
627
628} elseif ( 'do-translation-upgrade' == $action ) {
629
630	if ( ! current_user_can( 'update_core' ) && ! current_user_can( 'update_plugins' ) && ! current_user_can( 'update_themes' ) )
631		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
632
633	check_admin_referer( 'upgrade-translations' );
634
635	require_once( ABSPATH . 'wp-admin/admin-header.php' );
636	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
637
638	$url = 'update-core.php?action=do-translation-upgrade';
639	$nonce = 'upgrade-translations';
640	$title = __( 'Update Translations' );
641	$context = WP_LANG_DIR;
642
643	$upgrader = new Language_Pack_Upgrader( new Language_Pack_Upgrader_Skin( compact( 'url', 'nonce', 'title', 'context' ) ) );
644	$result = $upgrader->bulk_upgrade();
645
646	require_once( ABSPATH . 'wp-admin/admin-footer.php' );
647
648} else {
649	/**
650	 * Fires for each custom update action on the WordPress Updates screen.
651	 *
652	 * The dynamic portion of the hook name, `$action`, refers to the
653	 * passed update action. The hook fires in lieu of all available
654	 * default update actions.
655	 *
656	 * @since 3.2.0
657	 */
658	do_action( "update-core-custom_{$action}" );
659}