<?php

/**

 * Update Core administration panel.

 *

 * @package WordPress

 * @subpackage Administration

 */

/** WordPress Administration Bootstrap */

require_once __DIR__ . '/admin.php';

wp_enqueue_style( 'plugin-install' );

wp_enqueue_script( 'plugin-install' );

wp_enqueue_script( 'updates' );

add_thickbox();

if ( is_multisite() && ! is_network_admin() ) {

	wp_redirect( network_admin_url( 'update-core.php' ) );

	exit;

}

if ( ! current_user_can( 'update_core' ) && ! current_user_can( 'update_themes' ) && ! current_user_can( 'update_plugins' ) && ! current_user_can( 'update_languages' ) ) {

	wp_die( __( 'Sorry, you are not allowed to update this site.' ) );

}

/**

 * Lists available core updates.

 *

 * @since 2.7.0

 *

 * @global string $wp_local_package Locale code of the package.

 * @global wpdb   $wpdb             WordPress database abstraction object.

 *

 * @param object $update

 */

function list_core_update( $update ) {

	global $wp_local_package, $wpdb;

	static $first_pass = true;

	$version_string = sprintf( '%s–%s', $update->current, get_locale() );

	if ( 'en_US' === $update->locale && 'en_US' === get_locale() ) {

		$version_string = $update->current;

	} elseif ( 'en_US' === $update->locale && $update->packages->partial && $wp_version === $update->partial_version ) {

		$updates = get_core_updates();

		if ( $updates && 1 === count( $updates ) ) {

			// If the only available update is a partial builds, it doesn't need a language-specific version string.

			$version_string = $update->current;

		}

	} elseif ( 'en_US' === $update->locale && 'en_US' !== get_locale() ) {

		$version_string = sprintf( '%s–%s', $update->current, $update->locale );

	}

	$current = false;

	if ( ! isset( $update->response ) || 'latest' === $update->response ) {

		$current = true;

	}

	$message       = '';

	$form_action   = 'update-core.php?action=do-core-upgrade';

	$php_version   = PHP_VERSION;

	$mysql_version = $wpdb->db_version();

	$show_buttons  = true;

	// Nightly build versions have two hyphens and a commit number.

	if ( preg_match( '/-\w+-\d+/', $update->current ) ) {

		// Retrieve the major version number.

		preg_match( '/^\d+.\d+/', $update->current, $update_major );

		/* translators: %s: WordPress version. */

		$submit = sprintf( __( 'Update to latest %s nightly' ), $update_major[0] );

	} else {

		/* translators: %s: WordPress version. */

		$submit = sprintf( __( 'Update to version %s' ), $version_string );

	}

	if ( 'development' === $update->response ) {

		$message = __( 'You can update to the latest nightly build manually:' );

	} else {

		if ( $current ) {

			/* translators: %s: WordPress version. */

			$submit      = sprintf( __( 'Re-install version %s' ), $version_string );

			$form_action = 'update-core.php?action=do-core-reinstall';

		} else {

			$php_compat = version_compare( $php_version, $update->php_version, '>=' );

			if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) ) {

				$mysql_compat = true;

			} else {

				$mysql_compat = version_compare( $mysql_version, $update->mysql_version, '>=' );

			}

			$version_url = sprintf(

				/* translators: %s: WordPress version. */

				esc_url( __( 'https://wordpress.org/documentation/wordpress-version/version-%s/' ) ),

				sanitize_title( $update->current )

			);

			$php_update_message = '</p><p>' . sprintf(

				/* translators: %s: URL to Update PHP page. */

				__( '<a href="%s">Learn more about updating PHP</a>.' ),

				esc_url( wp_get_update_php_url() )

			);

			$annotation = wp_get_update_php_annotation();

			if ( $annotation ) {

				$php_update_message .= '</p><p><em>' . $annotation . '</em>';

			}

			if ( ! $mysql_compat && ! $php_compat ) {

				$message = sprintf(

					/* translators: 1: URL to WordPress release notes, 2: WordPress version number, 3: Minimum required PHP version number, 4: Minimum required MySQL version number, 5: Current PHP version number, 6: Current MySQL version number. */

					__( 'You cannot update because <a href="%1$s">WordPress %2$s</a> requires PHP version %3$s or higher and MySQL version %4$s or higher. You are running PHP version %5$s and MySQL version %6$s.' ),

					$version_url,

					$update->current,

					$update->php_version,

					$update->mysql_version,

					$php_version,

					$mysql_version

				) . $php_update_message;

			} elseif ( ! $php_compat ) {

				$message = sprintf(

					/* translators: 1: URL to WordPress release notes, 2: WordPress version number, 3: Minimum required PHP version number, 4: Current PHP version number. */

					__( 'You cannot update because <a href="%1$s">WordPress %2$s</a> requires PHP version %3$s or higher. You are running version %4$s.' ),

					$version_url,

					$update->current,

					$update->php_version,

					$php_version

				) . $php_update_message;

			} elseif ( ! $mysql_compat ) {

				$message = sprintf(

					/* translators: 1: URL to WordPress release notes, 2: WordPress version number, 3: Minimum required MySQL version number, 4: Current MySQL version number. */

					__( 'You cannot update because <a href="%1$s">WordPress %2$s</a> requires MySQL version %3$s or higher. You are running version %4$s.' ),

					$version_url,

					$update->current,

					$update->mysql_version,

					$mysql_version

				);

			} else {

				$message = sprintf(

					/* translators: 1: Installed WordPress version number, 2: URL to WordPress release notes, 3: New WordPress version number, including locale if necessary. */

					__( 'You can update from WordPress %1$s to <a href="%2$s">WordPress %3$s</a> manually:' ),

					$wp_version,

					$version_url,

					$version_string

				);

			}

			if ( ! $mysql_compat || ! $php_compat ) {

				$show_buttons = false;

			}

		}

	}

	echo '<p>';

	echo $message;

	echo '</p>';

	echo '<form method="post" action="' . esc_url( $form_action ) . '" name="upgrade" class="upgrade">';

	wp_nonce_field( 'upgrade-core' );

	echo '<p>';

	echo '<input name="version" value="' . esc_attr( $update->current ) . '" type="hidden" />';

	echo '<input name="locale" value="' . esc_attr( $update->locale ) . '" type="hidden" />';

	if ( $show_buttons ) {

		if ( $first_pass ) {

			submit_button( $submit, $current ? '' : 'primary regular', 'upgrade', false );

			$first_pass = false;

		} else {

			submit_button( $submit, '', 'upgrade', false );

		}

	}

	if ( 'en_US' !== $update->locale ) {

		if ( ! isset( $update->dismissed ) || ! $update->dismissed ) {

			submit_button( __( 'Hide this update' ), '', 'dismiss', false );

		} else {

			submit_button( __( 'Bring back this update' ), '', 'undismiss', false );

		}

	}

	echo '</p>';

	if ( 'en_US' !== $update->locale && ( ! isset( $wp_local_package ) || $wp_local_package !== $update->locale ) ) {

		echo '<p class="hint">' . __( 'This localized version contains both the translation and various other localization fixes.' ) . '</p>';

	} elseif ( 'en_US' === $update->locale && 'en_US' !== get_locale() && ( ! $update->packages->partial && $wp_version === $update->partial_version ) ) {

		// Partial builds don't need language-specific warnings.

		echo '<p class="hint">' . sprintf(

			/* translators: %s: WordPress version. */

			__( '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.' ),

			'development' !== $update->response ? $update->current : ''

		) . '</p>';

	}

	echo '</form>';

}

/**

 * Display dismissed updates.

 *

 * @since 2.7.0

 */

function dismissed_updates() {

	$dismissed = get_core_updates(

		array(

			'dismissed' => true,

			'available' => false,

		)

	);

	if ( $dismissed ) {

		$show_text = esc_js( __( 'Show hidden updates' ) );

		$hide_text = esc_js( __( 'Hide hidden updates' ) );

		?>

		<script type="text/javascript">

			jQuery( function( $ ) {

				$( '#show-dismissed' ).on( 'click', function() {

					var isExpanded = ( 'true' === $( this ).attr( 'aria-expanded' ) );

					if ( isExpanded ) {

						$( this ).text( '<?php echo $show_text; ?>' ).attr( 'aria-expanded', 'false' );

					} else {

						$( this ).text( '<?php echo $hide_text; ?>' ).attr( 'aria-expanded', 'true' );

					}

					$( '#dismissed-updates' ).toggle( 'fast' );

				});

			});

		</script>

		<?php

		echo '<p class="hide-if-no-js"><button type="button" class="button" id="show-dismissed" aria-expanded="false">' . __( 'Show hidden updates' ) . '</button></p>';

		echo '<ul id="dismissed-updates" class="core-updates dismissed">';

		foreach ( (array) $dismissed as $update ) {

			echo '<li>';

			list_core_update( $update );

			echo '</li>';

		}

		echo '</ul>';

	}

}

/**

 * Display upgrade WordPress for downloading latest or upgrading automatically form.

 *

 * @since 2.7.0

 */

function core_upgrade_preamble() {

	$updates = get_core_updates();

	// Include an unmodified $wp_version.

	require ABSPATH . WPINC . '/version.php';

	$is_development_version = preg_match( '/alpha|beta|RC/', $wp_version );

	if ( isset( $updates[0]->version ) && version_compare( $updates[0]->version, $wp_version, '>' ) ) {

		echo '<h2 class="response">';

		_e( 'An updated version of WordPress is available.' );

		echo '</h2>';

		$message = sprintf(

			/* translators: 1: Documentation on WordPress backups, 2: Documentation on updating WordPress. */

			__( '<strong>Important:</strong> Before updating, please <a href="%1$s">back up your database and files</a>. For help with updates, visit the <a href="%2$s">Updating WordPress</a> documentation page.' ),

			__( 'https://developer.wordpress.org/advanced-administration/security/backup/' ),

			__( 'https://wordpress.org/documentation/article/updating-wordpress/' )

		);

		wp_admin_notice(

			$message,

			array(

				'type'               => 'warning',

				'additional_classes' => array( 'inline' ),

			)

		);

	} elseif ( $is_development_version ) {

		echo '<h2 class="response">' . __( 'You are using a development version of WordPress.' ) . '</h2>';

	} else {

		echo '<h2 class="response">' . __( 'You have the latest version of WordPress.' ) . '</h2>';

	}

	echo '<ul class="core-updates">';

	foreach ( (array) $updates as $update ) {

		echo '<li>';

		list_core_update( $update );

		echo '</li>';

	}

	echo '</ul>';

	// Don't show the maintenance mode notice when we are only showing a single re-install option.

	if ( $updates && ( count( $updates ) > 1 || 'latest' !== $updates[0]->response ) ) {

		echo '<p>' . __( 'While your site is being updated, it will be in maintenance mode. As soon as your updates are complete, this mode will be deactivated.' ) . '</p>';

	} elseif ( ! $updates ) {

		list( $normalized_version ) = explode( '-', $wp_version );

		echo '<p>' . sprintf(

			/* translators: 1: URL to About screen, 2: WordPress version. */

			__( '<a href="%1$s">Learn more about WordPress %2$s</a>.' ),

			esc_url( self_admin_url( 'about.php' ) ),

			$normalized_version

		) . '</p>';

	}

	dismissed_updates();

}

/**

 * Display WordPress auto-updates settings.

 *

 * @since 5.6.0

 */

function core_auto_updates_settings() {

	if ( isset( $_GET['core-major-auto-updates-saved'] ) ) {

		if ( 'enabled' === $_GET['core-major-auto-updates-saved'] ) {

			$notice_text = __( 'Automatic updates for all WordPress versions have been enabled. Thank you!' );

			wp_admin_notice(

				$notice_text,

				array(

					'type'        => 'success',

					'dismissible' => true,

				)

			);

		} elseif ( 'disabled' === $_GET['core-major-auto-updates-saved'] ) {

			$notice_text = __( 'WordPress will only receive automatic security and maintenance releases from now on.' );

			wp_admin_notice(

				$notice_text,

				array(

					'type'        => 'success',

					'dismissible' => true,

				)

			);

		}

	}

	require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';

	$updater = new WP_Automatic_Updater();

	// Defaults:

	$upgrade_dev   = get_site_option( 'auto_update_core_dev', 'enabled' ) === 'enabled';

	$upgrade_minor = get_site_option( 'auto_update_core_minor', 'enabled' ) === 'enabled';

	$upgrade_major = get_site_option( 'auto_update_core_major', 'unset' ) === 'enabled';

	$can_set_update_option = true;

	// WP_AUTO_UPDATE_CORE = true (all), 'beta', 'rc', 'development', 'branch-development', 'minor', false.

	if ( defined( 'WP_AUTO_UPDATE_CORE' ) ) {

		if ( false === WP_AUTO_UPDATE_CORE ) {

			// Defaults to turned off, unless a filter allows it.

			$upgrade_dev   = false;

			$upgrade_minor = false;

			$upgrade_major = false;

		} elseif ( true === WP_AUTO_UPDATE_CORE

			|| in_array( WP_AUTO_UPDATE_CORE, array( 'beta', 'rc', 'development', 'branch-development' ), true )

		) {

			// ALL updates for core.

			$upgrade_dev   = true;

			$upgrade_minor = true;

			$upgrade_major = true;

		} elseif ( 'minor' === WP_AUTO_UPDATE_CORE ) {

			// Only minor updates for core.

			$upgrade_dev   = false;

			$upgrade_minor = true;

			$upgrade_major = false;

		}

		// The UI is overridden by the `WP_AUTO_UPDATE_CORE` constant.

		$can_set_update_option = false;

	}

	if ( $updater->is_disabled() ) {

		$upgrade_dev   = false;

		$upgrade_minor = false;

		$upgrade_major = false;

		/*

		 * The UI is overridden by the `AUTOMATIC_UPDATER_DISABLED` constant

		 * or the `automatic_updater_disabled` filter,

		 * or by `wp_is_file_mod_allowed( 'automatic_updater' )`.

		 * See `WP_Automatic_Updater::is_disabled()`.

		 */

		$can_set_update_option = false;

	}

	// Is the UI overridden by a plugin using the `allow_major_auto_core_updates` filter?

	if ( has_filter( 'allow_major_auto_core_updates' ) ) {

		$can_set_update_option = false;

	}

	/** This filter is documented in wp-admin/includes/class-core-upgrader.php */

	$upgrade_dev = apply_filters( 'allow_dev_auto_core_updates', $upgrade_dev );

	/** This filter is documented in wp-admin/includes/class-core-upgrader.php */

	$upgrade_minor = apply_filters( 'allow_minor_auto_core_updates', $upgrade_minor );

	/** This filter is documented in wp-admin/includes/class-core-upgrader.php */

	$upgrade_major = apply_filters( 'allow_major_auto_core_updates', $upgrade_major );

	$auto_update_settings = array(

		'dev'   => $upgrade_dev,

		'minor' => $upgrade_minor,

		'major' => $upgrade_major,

	);

	if ( $upgrade_major ) {

		$updates    = get_core_updates();