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/php/wp-admin/update-core.php

https://bitbucket.org/cubeee/wp-fin
PHP | 631 lines | 509 code | 90 blank | 32 comment | 136 complexity | 9c86a314666baebfc6384a02258a159c 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' );
 14add_thickbox();
 15
 16if ( is_multisite() && ! is_network_admin() ) {
 17	wp_redirect( network_admin_url( 'update-core.php' ) );
 18	exit();
 19}
 20
 21if ( ! current_user_can( 'update_core' ) && ! current_user_can( 'update_themes' ) && ! current_user_can( 'update_plugins' ) )
 22	wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
 23
 24function list_core_update( $update ) {
 25 	global $wp_local_package, $wpdb, $wp_version;
 26  	static $first_pass = true;
 27
 28 	if ( 'en_US' == $update->locale && 'en_US' == get_locale() )
 29 		$version_string = $update->current;
 30 	// If the only available update is a partial builds, it doesn't need a language-specific version string.
 31 	elseif ( 'en_US' == $update->locale && $update->packages->partial && $wp_version == $update->partial_version && ( $updates = get_core_updates() ) && 1 == count( $updates ) )
 32 		$version_string = $update->current;
 33 	else
 34 		$version_string = sprintf( "%s&ndash;<strong>%s</strong>", $update->current, $update->locale );
 35
 36	$current = false;
 37	if ( !isset($update->response) || 'latest' == $update->response )
 38		$current = true;
 39	$submit = __('Update Now');
 40	$form_action = 'update-core.php?action=do-core-upgrade';
 41	$php_version    = phpversion();
 42	$mysql_version  = $wpdb->db_version();
 43	$show_buttons = true;
 44	if ( 'development' == $update->response ) {
 45		$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:');
 46		$download = __('Download nightly build');
 47	} else {
 48		if ( $current ) {
 49			$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 );
 50			$submit = __('Re-install Now');
 51			$form_action = 'update-core.php?action=do-core-reinstall';
 52		} else {
 53			$php_compat     = version_compare( $php_version, $update->php_version, '>=' );
 54			if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) )
 55				$mysql_compat = true;
 56			else
 57				$mysql_compat = version_compare( $mysql_version, $update->mysql_version, '>=' );
 58
 59			if ( !$mysql_compat && !$php_compat )
 60				$message = sprintf( __('You cannot update because <a href="http://codex.wordpress.org/Version_%1$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, $mysql_version );
 61			elseif ( !$php_compat )
 62				$message = sprintf( __('You cannot update because <a href="http://codex.wordpress.org/Version_%1$s">WordPress %1$s</a> requires PHP version %2$s or higher. You are running version %3$s.'), $update->current, $update->php_version, $php_version );
 63			elseif ( !$mysql_compat )
 64				$message = sprintf( __('You cannot update because <a href="http://codex.wordpress.org/Version_%1$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 );
 65			else
 66				$message = 	sprintf(__('You can update to <a href="http://codex.wordpress.org/Version_%1$s">WordPress %2$s</a> automatically or download the package and install it manually:'), $update->current, $version_string);
 67			if ( !$mysql_compat || !$php_compat )
 68				$show_buttons = false;
 69		}
 70		$download = sprintf(__('Download %s'), $version_string);
 71	}
 72
 73	echo '<p>';
 74	echo $message;
 75	echo '</p>';
 76	echo '<form method="post" action="' . $form_action . '" name="upgrade" class="upgrade">';
 77	wp_nonce_field('upgrade-core');
 78	echo '<p>';
 79	echo '<input name="version" value="'. esc_attr($update->current) .'" type="hidden"/>';
 80	echo '<input name="locale" value="'. esc_attr($update->locale) .'" type="hidden"/>';
 81	if ( $show_buttons ) {
 82		if ( $first_pass ) {
 83			submit_button( $submit, $current ? 'button' : 'primary regular', 'upgrade', false );
 84			$first_pass = false;
 85		} else {
 86			submit_button( $submit, 'button', 'upgrade', false );
 87		}
 88		echo '&nbsp;<a href="' . esc_url( $update->download ) . '" class="button">' . $download . '</a>&nbsp;';
 89	}
 90	if ( 'en_US' != $update->locale )
 91		if ( !isset( $update->dismissed ) || !$update->dismissed )
 92			submit_button( __('Hide this update'), 'button', 'dismiss', false );
 93		else
 94			submit_button( __('Bring back this update'), 'button', 'undismiss', false );
 95	echo '</p>';
 96	if ( 'en_US' != $update->locale && ( !isset($wp_local_package) || $wp_local_package != $update->locale ) )
 97	    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>';
 98	// Partial builds don't need language-specific warnings.
 99	elseif ( 'en_US' == $update->locale && get_locale() != 'en_US' && ( ! $update->packages->partial && $wp_version == $update->partial_version ) ) {
100	    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>';
101	}
102	echo '</form>';
103
104}
105
106function dismissed_updates() {
107	$dismissed = get_core_updates( array( 'dismissed' => true, 'available' => false ) );
108	if ( $dismissed ) {
109
110		$show_text = esc_js(__('Show hidden updates'));
111		$hide_text = esc_js(__('Hide hidden updates'));
112	?>
113	<script type="text/javascript">
114
115		jQuery(function($) {
116			$('dismissed-updates').show();
117			$('#show-dismissed').toggle(function(){$(this).text('<?php echo $hide_text; ?>');}, function() {$(this).text('<?php echo $show_text; ?>')});
118			$('#show-dismissed').click(function() { $('#dismissed-updates').toggle('slow');});
119		});
120	</script>
121	<?php
122		echo '<p class="hide-if-no-js"><a id="show-dismissed" href="#">'.__('Show hidden updates').'</a></p>';
123		echo '<ul id="dismissed-updates" class="core-updates dismissed">';
124		foreach( (array) $dismissed as $update) {
125			echo '<li>';
126			list_core_update( $update );
127			echo '</li>';
128		}
129		echo '</ul>';
130	}
131}
132
133/**
134 * Display upgrade WordPress for downloading latest or upgrading automatically form.
135 *
136 * @since 2.7
137 *
138 * @return null
139 */
140function core_upgrade_preamble() {
141	global $wp_version, $required_php_version, $required_mysql_version;
142
143	$updates = get_core_updates();
144
145	if ( !isset($updates[0]->response) || 'latest' == $updates[0]->response ) {
146		echo '<h3>';
147		_e('You have the latest version of WordPress.');
148
149		if ( wp_http_supports( array( 'ssl' ) ) ) {
150			require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
151			$upgrader = new WP_Automatic_Updater;
152			$future_minor_update = (object) array(
153				'current'       => $wp_version . '.1.next.minor',
154				'version'       => $wp_version . '.1.next.minor',
155				'php_version'   => $required_php_version,
156				'mysql_version' => $required_mysql_version,
157			);
158			$should_auto_update = $upgrader->should_update( 'core', $future_minor_update, ABSPATH );
159			if ( $should_auto_update )
160				echo ' ' . __( 'Future security updates will be applied automatically.' );
161		}
162		echo '</h3>';
163	} else {
164		echo '<div class="updated inline"><p>';
165		_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.');
166		echo '</p></div>';
167
168		echo '<h3 class="response">';
169		_e( 'An updated version of WordPress is available.' );
170		echo '</h3>';
171	}
172
173	if ( isset( $updates[0] ) && $updates[0]->response == 'development' ) {
174		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
175		$upgrader = new WP_Automatic_Updater;
176		if ( wp_http_supports( 'ssl' ) && $upgrader->should_update( 'core', $updates[0], ABSPATH ) )
177			echo '<div class="updated inline"><p><strong>BETA TESTERS:</strong> This site is set up to install updates of future beta versions automatically.</p></div>';
178	}
179
180	echo '<ul class="core-updates">';
181	$alternate = true;
182	foreach( (array) $updates as $update ) {
183		echo '<li>';
184		list_core_update( $update );
185		echo '</li>';
186	}
187	echo '</ul>';
188	// Don't show the maintenance mode notice when we are only showing a single re-install option.
189	if ( $updates && ( count( $updates ) > 1 || $updates[0]->response != 'latest' ) ) {
190		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>';
191	} elseif ( ! $updates ) {
192		list( $normalized_version ) = explode( '-', $wp_version );
193		echo '<p>' . sprintf( __( '<a href="%s">Learn more about WordPress %s</a>.' ), esc_url( self_admin_url( 'about.php' ) ), $normalized_version ) . '</p>';
194	}
195	dismissed_updates();
196}
197
198function list_plugin_updates() {
199	global $wp_version;
200
201	$cur_wp_version = preg_replace('/-.*$/', '', $wp_version);
202
203	require_once(ABSPATH . 'wp-admin/includes/plugin-install.php');
204	$plugins = get_plugin_updates();
205	if ( empty( $plugins ) ) {
206		echo '<h3>' . __( 'Plugins' ) . '</h3>';
207		echo '<p>' . __( 'Your plugins are all up to date.' ) . '</p>';
208		return;
209	}
210	$form_action = 'update-core.php?action=do-plugin-upgrade';
211
212	$core_updates = get_core_updates();
213	if ( !isset($core_updates[0]->response) || 'latest' == $core_updates[0]->response || 'development' == $core_updates[0]->response || version_compare( $core_updates[0]->current, $cur_wp_version, '=') )
214		$core_update_version = false;
215	else
216		$core_update_version = $core_updates[0]->current;
217	?>
218<h3><?php _e( 'Plugins' ); ?></h3>
219<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>
220<form method="post" action="<?php echo esc_url( $form_action ); ?>" name="upgrade-plugins" class="upgrade">
221<?php wp_nonce_field('upgrade-core'); ?>
222<p><input id="upgrade-plugins" class="button" type="submit" value="<?php esc_attr_e('Update Plugins'); ?>" name="upgrade" /></p>
223<table class="widefat" cellspacing="0" id="update-plugins-table">
224	<thead>
225	<tr>
226		<th scope="col" class="manage-column check-column"><input type="checkbox" id="plugins-select-all" /></th>
227		<th scope="col" class="manage-column"><label for="plugins-select-all"><?php _e('Select All'); ?></label></th>
228	</tr>
229	</thead>
230
231	<tfoot>
232	<tr>
233		<th scope="col" class="manage-column check-column"><input type="checkbox" id="plugins-select-all-2" /></th>
234		<th scope="col" class="manage-column"><label for="plugins-select-all-2"><?php _e('Select All'); ?></label></th>
235	</tr>
236	</tfoot>
237	<tbody class="plugins">
238<?php
239	foreach ( (array) $plugins as $plugin_file => $plugin_data) {
240		$info = plugins_api('plugin_information', array('slug' => $plugin_data->update->slug ));
241		// Get plugin compat for running version of WordPress.
242		if ( isset($info->tested) && version_compare($info->tested, $cur_wp_version, '>=') ) {
243			$compat = '<br />' . sprintf(__('Compatibility with WordPress %1$s: 100%% (according to its author)'), $cur_wp_version);
244		} elseif ( isset($info->compatibility[$cur_wp_version][$plugin_data->update->new_version]) ) {
245			$compat = $info->compatibility[$cur_wp_version][$plugin_data->update->new_version];
246			$compat = '<br />' . sprintf(__('Compatibility with WordPress %1$s: %2$d%% (%3$d "works" votes out of %4$d total)'), $cur_wp_version, $compat[0], $compat[2], $compat[1]);
247		} else {
248			$compat = '<br />' . sprintf(__('Compatibility with WordPress %1$s: Unknown'), $cur_wp_version);
249		}
250		// Get plugin compat for updated version of WordPress.
251		if ( $core_update_version ) {
252			if ( isset($info->compatibility[$core_update_version][$plugin_data->update->new_version]) ) {
253				$update_compat = $info->compatibility[$core_update_version][$plugin_data->update->new_version];
254				$compat .= '<br />' . sprintf(__('Compatibility with WordPress %1$s: %2$d%% (%3$d "works" votes out of %4$d total)'), $core_update_version, $update_compat[0], $update_compat[2], $update_compat[1]);
255			} else {
256				$compat .= '<br />' . sprintf(__('Compatibility with WordPress %1$s: Unknown'), $core_update_version);
257			}
258		}
259		// Get the upgrade notice for the new plugin version.
260		if ( isset($plugin_data->update->upgrade_notice) ) {
261			$upgrade_notice = '<br />' . strip_tags($plugin_data->update->upgrade_notice);
262		} else {
263			$upgrade_notice = '';
264		}
265
266		$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');
267		$details_text = sprintf(__('View version %1$s details'), $plugin_data->update->new_version);
268		$details = sprintf('<a href="%1$s" class="thickbox" title="%2$s">%3$s</a>.', esc_url($details_url), esc_attr($plugin_data->Name), $details_text);
269
270		echo "
271	<tr>
272		<th scope='row' class='check-column'><input type='checkbox' name='checked[]' value='" . esc_attr($plugin_file) . "' /></th>
273		<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>
274	</tr>";
275	}
276?>
277	</tbody>
278</table>
279<p><input id="upgrade-plugins-2" class="button" type="submit" value="<?php esc_attr_e('Update Plugins'); ?>" name="upgrade" /></p>
280</form>
281<?php
282}
283
284function list_theme_updates() {
285	$themes = get_theme_updates();
286	if ( empty( $themes ) ) {
287		echo '<h3>' . __( 'Themes' ) . '</h3>';
288		echo '<p>' . __( 'Your themes are all up to date.' ) . '</p>';
289		return;
290	}
291
292	$form_action = 'update-core.php?action=do-theme-upgrade';
293
294?>
295<h3><?php _e( 'Themes' ); ?></h3>
296<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>
297<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>
298<form method="post" action="<?php echo esc_url( $form_action ); ?>" name="upgrade-themes" class="upgrade">
299<?php wp_nonce_field('upgrade-core'); ?>
300<p><input id="upgrade-themes" class="button" type="submit" value="<?php esc_attr_e('Update Themes'); ?>" name="upgrade" /></p>
301<table class="widefat" cellspacing="0" id="update-themes-table">
302	<thead>
303	<tr>
304		<th scope="col" class="manage-column check-column"><input type="checkbox" id="themes-select-all" /></th>
305		<th scope="col" class="manage-column"><label for="themes-select-all"><?php _e('Select All'); ?></label></th>
306	</tr>
307	</thead>
308
309	<tfoot>
310	<tr>
311		<th scope="col" class="manage-column check-column"><input type="checkbox" id="themes-select-all-2" /></th>
312		<th scope="col" class="manage-column"><label for="themes-select-all-2"><?php _e('Select All'); ?></label></th>
313	</tr>
314	</tfoot>
315	<tbody class="plugins">
316<?php
317	foreach ( $themes as $stylesheet => $theme ) {
318		echo "
319	<tr>
320		<th scope='row' class='check-column'><input type='checkbox' name='checked[]' value='" . esc_attr( $stylesheet ) . "' /></th>
321		<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>
322	</tr>";
323	}
324?>
325	</tbody>
326</table>
327<p><input id="upgrade-themes-2" class="button" type="submit" value="<?php esc_attr_e('Update Themes'); ?>" name="upgrade" /></p>
328</form>
329<?php
330}
331
332function list_translation_updates() {
333	$updates = wp_get_translation_updates();
334	if ( ! $updates ) {
335		if ( 'en_US' != get_locale() ) {
336			echo '<h3>' . __( 'Translations' ) . '</h3>';
337			echo '<p>' . __( 'Your translations are all up to date.' ) . '</p>';
338		}
339		return;
340	}
341
342	$form_action = 'update-core.php?action=do-translation-upgrade';
343	?>
344	<h3><?php _e( 'Translations' ); ?></h3>
345	<form method="post" action="<?php echo esc_url( $form_action ); ?>" name="upgrade-themes" class="upgrade">
346		<p><?php _e( 'Some of your translations are out of date.' ); ?></p>
347		<?php wp_nonce_field('upgrade-translations'); ?>
348		<p><input class="button" type="submit" value="<?php esc_attr_e( 'Update Translations' ); ?>" name="upgrade" /></p>
349	</form>
350	<?php
351}
352
353/**
354 * Upgrade WordPress core display.
355 *
356 * @since 2.7
357 *
358 * @return null
359 */
360function do_core_upgrade( $reinstall = false ) {
361	global $wp_filesystem;
362
363	include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
364
365	if ( $reinstall )
366		$url = 'update-core.php?action=do-core-reinstall';
367	else
368		$url = 'update-core.php?action=do-core-upgrade';
369	$url = wp_nonce_url($url, 'upgrade-core');
370
371	$version = isset( $_POST['version'] )? $_POST['version'] : false;
372	$locale = isset( $_POST['locale'] )? $_POST['locale'] : 'en_US';
373	$update = find_core_update( $version, $locale );
374	if ( !$update )
375		return;
376
377?>
378	<div class="wrap">
379	<h2><?php _e('Update WordPress'); ?></h2>
380<?php
381
382	if ( false === ( $credentials = request_filesystem_credentials( $url, '', false, ABSPATH ) ) ) {
383		echo '</div>';
384		return;
385	}
386
387	if ( ! WP_Filesystem( $credentials, ABSPATH ) ) {
388		// Failed to connect, Error and request again
389		request_filesystem_credentials( $url, '', true, ABSPATH );
390		echo '</div>';
391		return;
392	}
393
394	if ( $wp_filesystem->errors->get_error_code() ) {
395		foreach ( $wp_filesystem->errors->get_error_messages() as $message )
396			show_message($message);
397		echo '</div>';
398		return;
399	}
400
401	if ( $reinstall )
402		$update->response = 'reinstall';
403
404	add_filter( 'update_feedback', 'show_message' );
405
406	$upgrader = new Core_Upgrader();
407	$result = $upgrader->upgrade( $update );
408
409	if ( is_wp_error($result) ) {
410		show_message($result);
411		if ('up_to_date' != $result->get_error_code() )
412			show_message( __('Installation Failed') );
413		echo '</div>';
414		return;
415	}
416
417	show_message( __('WordPress updated successfully') );
418	show_message( '<span class="hide-if-no-js">' . sprintf( __( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%2$s">here</a>.' ), $result, esc_url( self_admin_url( 'about.php?updated' ) ) ) . '</span>' );
419	show_message( '<span class="hide-if-js">' . sprintf( __( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ), $result, esc_url( self_admin_url( 'about.php?updated' ) ) ) . '</span>' );
420	?>
421	</div>
422	<script type="text/javascript">
423	window.location = '<?php echo self_admin_url( 'about.php?updated' ); ?>';
424	</script>
425	<?php
426}
427
428function do_dismiss_core_update() {
429	$version = isset( $_POST['version'] )? $_POST['version'] : false;
430	$locale = isset( $_POST['locale'] )? $_POST['locale'] : 'en_US';
431	$update = find_core_update( $version, $locale );
432	if ( !$update )
433		return;
434	dismiss_core_update( $update );
435	wp_redirect( wp_nonce_url('update-core.php?action=upgrade-core', 'upgrade-core') );
436	exit;
437}
438
439function do_undismiss_core_update() {
440	$version = isset( $_POST['version'] )? $_POST['version'] : false;
441	$locale = isset( $_POST['locale'] )? $_POST['locale'] : 'en_US';
442	$update = find_core_update( $version, $locale );
443	if ( !$update )
444		return;
445	undismiss_core_update( $version, $locale );
446	wp_redirect( wp_nonce_url('update-core.php?action=upgrade-core', 'upgrade-core') );
447	exit;
448}
449
450$action = isset($_GET['action']) ? $_GET['action'] : 'upgrade-core';
451
452$upgrade_error = false;
453if ( ( 'do-theme-upgrade' == $action || ( 'do-plugin-upgrade' == $action && ! isset( $_GET['plugins'] ) ) )
454	&& ! isset( $_POST['checked'] ) ) {
455	$upgrade_error = $action == 'do-theme-upgrade' ? 'themes' : 'plugins';
456	$action = 'upgrade-core';
457}
458
459$title = __('WordPress Updates');
460$parent_file = 'tools.php';
461
462$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>';
463$updates_overview .= '<p>' . __( 'If an update is available, you&#8127;ll see a notification appear in the Toolbar and navigation menu.' ) . ' ' . __( 'Keeping your site up to date is important for your site&#8217;s security, and makes the internet a safer place for you and your readers.' ) . '</p>';
464
465get_current_screen()->add_help_tab( array(
466	'id'      => 'overview',
467	'title'   => __( 'Overview' ),
468	'content' => $updates_overview
469) );
470
471$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>';
472$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>';
473
474if ( 'en_US' != get_locale() ) {
475	$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>';
476}
477
478get_current_screen()->add_help_tab( array(
479	'id'      => 'how-to-update',
480	'title'   => __( 'How to Update' ),
481	'content' => $updates_howto
482) );
483
484get_current_screen()->set_help_sidebar(
485	'<p><strong>' . __('For more information:') . '</strong></p>' .
486	'<p>' . __( '<a href="http://codex.wordpress.org/Dashboard_Updates_Screen" target="_blank">Documentation on Updating WordPress</a>' ) . '</p>' .
487	'<p>' . __( '<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>' ) . '</p>'
488);
489
490if ( 'upgrade-core' == $action ) {
491	// Force a update check when requested
492	$force_check = ! empty( $_GET['force-check'] );
493	wp_version_check( array(), $force_check );
494
495	require_once(ABSPATH . 'wp-admin/admin-header.php');
496	?>
497	<div class="wrap">
498	<h2><?php _e('WordPress Updates'); ?></h2>
499	<?php
500	if ( $upgrade_error ) {
501		echo '<div class="error"><p>';
502		if ( $upgrade_error == 'themes' )
503			_e('Please select one or more themes to update.');
504		else
505			_e('Please select one or more plugins to update.');
506		echo '</p></div>';
507	}
508
509	echo '<p>';
510	/* translators: %1 date, %2 time. */
511	printf( __('Last checked on %1$s at %2$s.'), date_i18n( get_option( 'date_format' ) ), date_i18n( get_option( 'time_format' ) ) );
512	echo ' &nbsp; <a class="button" href="' . esc_url( self_admin_url('update-core.php?force-check=1') ) . '">' . __( 'Check Again' ) . '</a>';
513	echo '</p>';
514
515	if ( $core = current_user_can( 'update_core' ) )
516		core_upgrade_preamble();
517	if ( $plugins = current_user_can( 'update_plugins' ) )
518		list_plugin_updates();
519	if ( $themes = current_user_can( 'update_themes' ) )
520		list_theme_updates();
521	if ( $core || $plugins || $themes )
522		list_translation_updates();
523	unset( $core, $plugins, $themes );
524	do_action('core_upgrade_preamble');
525	echo '</div>';
526	include(ABSPATH . 'wp-admin/admin-footer.php');
527
528} elseif ( 'do-core-upgrade' == $action || 'do-core-reinstall' == $action ) {
529
530	if ( ! current_user_can( 'update_core' ) )
531		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
532
533	check_admin_referer('upgrade-core');
534
535	// do the (un)dismiss actions before headers,
536	// so that they can redirect
537	if ( isset( $_POST['dismiss'] ) )
538		do_dismiss_core_update();
539	elseif ( isset( $_POST['undismiss'] ) )
540		do_undismiss_core_update();
541
542	require_once(ABSPATH . 'wp-admin/admin-header.php');
543	if ( 'do-core-reinstall' == $action )
544		$reinstall = true;
545	else
546		$reinstall = false;
547
548	if ( isset( $_POST['upgrade'] ) )
549		do_core_upgrade($reinstall);
550
551	include(ABSPATH . 'wp-admin/admin-footer.php');
552
553} elseif ( 'do-plugin-upgrade' == $action ) {
554
555	if ( ! current_user_can( 'update_plugins' ) )
556		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
557
558	check_admin_referer('upgrade-core');
559
560	if ( isset( $_GET['plugins'] ) ) {
561		$plugins = explode( ',', $_GET['plugins'] );
562	} elseif ( isset( $_POST['checked'] ) ) {
563		$plugins = (array) $_POST['checked'];
564	} else {
565		wp_redirect( admin_url('update-core.php') );
566		exit;
567	}
568
569	$url = 'update.php?action=update-selected&plugins=' . urlencode(implode(',', $plugins));
570	$url = wp_nonce_url($url, 'bulk-update-plugins');
571
572	$title = __('Update Plugins');
573
574	require_once(ABSPATH . 'wp-admin/admin-header.php');
575	echo '<div class="wrap">';
576	echo '<h2>' . esc_html__('Update Plugins') . '</h2>';
577	echo "<iframe src='$url' style='width: 100%; height: 100%; min-height: 750px;' frameborder='0'></iframe>";
578	echo '</div>';
579	include(ABSPATH . 'wp-admin/admin-footer.php');
580
581} elseif ( 'do-theme-upgrade' == $action ) {
582
583	if ( ! current_user_can( 'update_themes' ) )
584		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
585
586	check_admin_referer('upgrade-core');
587
588	if ( isset( $_GET['themes'] ) ) {
589		$themes = explode( ',', $_GET['themes'] );
590	} elseif ( isset( $_POST['checked'] ) ) {
591		$themes = (array) $_POST['checked'];
592	} else {
593		wp_redirect( admin_url('update-core.php') );
594		exit;
595	}
596
597	$url = 'update.php?action=update-selected-themes&themes=' . urlencode(implode(',', $themes));
598	$url = wp_nonce_url($url, 'bulk-update-themes');
599
600	$title = __('Update Themes');
601
602	require_once(ABSPATH . 'wp-admin/admin-header.php');
603	echo '<div class="wrap">';
604	echo '<h2>' . esc_html__('Update Themes') . '</h2>';
605	echo "<iframe src='$url' style='width: 100%; height: 100%; min-height: 750px;' frameborder='0'></iframe>";
606	echo '</div>';
607	include(ABSPATH . 'wp-admin/admin-footer.php');
608
609} elseif ( 'do-translation-upgrade' == $action ) {
610
611	if ( ! current_user_can( 'update_core' ) && ! current_user_can( 'update_plugins' ) && ! current_user_can( 'update_themes' ) )
612		wp_die( __( 'You do not have sufficient permissions to update this site.' ) );
613
614	check_admin_referer( 'upgrade-translations' );
615
616	require_once( ABSPATH . 'wp-admin/admin-header.php' );
617	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
618
619	$url = 'update-core.php?action=do-translation-upgrade';
620	$nonce = 'upgrade-translations';
621	$title = __( 'Update Translations' );
622	$context = WP_LANG_DIR;
623
624	$upgrader = new Language_Pack_Upgrader( new Language_Pack_Upgrader_Skin( compact( 'url', 'nonce', 'title', 'context' ) ) );
625	$result = $upgrader->bulk_upgrade();
626
627	require_once( ABSPATH . 'wp-admin/admin-footer.php' );
628
629} else {
630	do_action('update-core-custom_' . $action);
631}