diff -r 000000000000 -r d970ebf37754 wp/wp-admin/includes/update-core.php
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-admin/includes/update-core.php Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,1002 @@
+ Introduced version
+ * Directories should be noted by suffixing it with a trailing slash (/)
+ *
+ * @since 3.2.0
+ * @global array $_new_bundled_files
+ * @var array
+ * @name $_new_bundled_files
+ */
+global $_new_bundled_files;
+
+$_new_bundled_files = array(
+ 'plugins/akismet/' => '2.0',
+ 'themes/twentyten/' => '3.0',
+ 'themes/twentyeleven/' => '3.2',
+ 'themes/twentytwelve/' => '3.5',
+ 'themes/twentythirteen/' => '3.6',
+);
+
+/**
+ * Upgrade the core of WordPress.
+ *
+ * This will create a .maintenance file at the base of the WordPress directory
+ * to ensure that people can not access the web site, when the files are being
+ * copied to their locations.
+ *
+ * The files in the {@link $_old_files} list will be removed and the new files
+ * copied from the zip file after the database is upgraded.
+ *
+ * The files in the {@link $_new_bundled_files} list will be added to the installation
+ * if the version is greater than or equal to the old version being upgraded.
+ *
+ * The steps for the upgrader for after the new release is downloaded and
+ * unzipped is:
+ * 1. Test unzipped location for select files to ensure that unzipped worked.
+ * 2. Create the .maintenance file in current WordPress base.
+ * 3. Copy new WordPress directory over old WordPress files.
+ * 4. Upgrade WordPress to new version.
+ * 4.1. Copy all files/folders other than wp-content
+ * 4.2. Copy any language files to WP_LANG_DIR (which may differ from WP_CONTENT_DIR
+ * 4.3. Copy any new bundled themes/plugins to their respective locations
+ * 5. Delete new WordPress directory path.
+ * 6. Delete .maintenance file.
+ * 7. Remove old files.
+ * 8. Delete 'update_core' option.
+ *
+ * There are several areas of failure. For instance if PHP times out before step
+ * 6, then you will not be able to access any portion of your site. Also, since
+ * the upgrade will not continue where it left off, you will not be able to
+ * automatically remove old files and remove the 'update_core' option. This
+ * isn't that bad.
+ *
+ * If the copy of the new WordPress over the old fails, then the worse is that
+ * the new WordPress directory will remain.
+ *
+ * If it is assumed that every file will be copied over, including plugins and
+ * themes, then if you edit the default theme, you should rename it, so that
+ * your changes remain.
+ *
+ * @since 2.7.0
+ *
+ * @param string $from New release unzipped path.
+ * @param string $to Path to old WordPress installation.
+ * @return WP_Error|null WP_Error on failure, null on success.
+ */
+function update_core($from, $to) {
+ global $wp_filesystem, $_old_files, $_new_bundled_files, $wpdb;
+
+ @set_time_limit( 300 );
+
+ // Sanity check the unzipped distribution
+ apply_filters( 'update_feedback', __('Verifying the unpacked files…') );
+ $distro = '';
+ $roots = array( '/wordpress/', '/wordpress-mu/' );
+ foreach ( $roots as $root ) {
+ if ( $wp_filesystem->exists( $from . $root . 'readme.html' ) && $wp_filesystem->exists( $from . $root . 'wp-includes/version.php' ) ) {
+ $distro = $root;
+ break;
+ }
+ }
+ if ( ! $distro ) {
+ $wp_filesystem->delete( $from, true );
+ return new WP_Error( 'insane_distro', __('The update could not be unpacked') );
+ }
+
+ // Import $wp_version, $required_php_version, and $required_mysql_version from the new version
+ // $wp_filesystem->wp_content_dir() returned unslashed pre-2.8
+ $versions_file = trailingslashit( $wp_filesystem->wp_content_dir() ) . 'upgrade/version-current.php';
+ if ( ! $wp_filesystem->copy( $from . $distro . 'wp-includes/version.php', $versions_file ) ) {
+ $wp_filesystem->delete( $from, true );
+ return new WP_Error( 'copy_failed_for_version_file', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), 'wp-includes/version.php' );
+ }
+
+ $wp_filesystem->chmod( $versions_file, FS_CHMOD_FILE );
+ require( WP_CONTENT_DIR . '/upgrade/version-current.php' );
+ $wp_filesystem->delete( $versions_file );
+
+ $php_version = phpversion();
+ $mysql_version = $wpdb->db_version();
+ $old_wp_version = $GLOBALS['wp_version']; // The version of WordPress we're updating from
+ $development_build = ( false !== strpos( $old_wp_version . $wp_version, '-' ) ); // a dash in the version indicates a Development release
+ $php_compat = version_compare( $php_version, $required_php_version, '>=' );
+ if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) )
+ $mysql_compat = true;
+ else
+ $mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' );
+
+ if ( !$mysql_compat || !$php_compat )
+ $wp_filesystem->delete($from, true);
+
+ if ( !$mysql_compat && !$php_compat )
+ return new WP_Error( 'php_mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.'), $wp_version, $required_php_version, $required_mysql_version, $php_version, $mysql_version ) );
+ elseif ( !$php_compat )
+ return new WP_Error( 'php_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.'), $wp_version, $required_php_version, $php_version ) );
+ elseif ( !$mysql_compat )
+ return new WP_Error( 'mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.'), $wp_version, $required_mysql_version, $mysql_version ) );
+
+ apply_filters( 'update_feedback', __( 'Preparing to install the latest version…' ) );
+
+ // Don't copy wp-content, we'll deal with that below
+ $skip = array( 'wp-content' );
+ $check_is_writable = array();
+
+ // Check to see which files don't really need updating - only available for 3.7 and higher
+ if ( function_exists( 'get_core_checksums' ) ) {
+ $checksums = get_core_checksums( $wp_version, isset( $wp_local_package ) ? $wp_local_package : 'en_US' );
+ if ( is_array( $checksums ) && isset( $checksums[ $wp_version ] ) )
+ $checksums = $checksums[ $wp_version ]; // Compat code for 3.7-beta2
+ if ( is_array( $checksums ) ) {
+ foreach( $checksums as $file => $checksum ) {
+ if ( 'wp-content' == substr( $file, 0, 10 ) )
+ continue;
+ if ( ! file_exists( ABSPATH . $file ) )
+ continue;
+ if ( md5_file( ABSPATH . $file ) === $checksum )
+ $skip[] = $file;
+ else
+ $check_is_writable[ $file ] = ABSPATH . $file;
+ }
+ }
+ }
+
+ // If we're using the direct method, we can predict write failures that are due to permissions.
+ if ( $check_is_writable && 'direct' === $wp_filesystem->method ) {
+ $files_writable = array_filter( $check_is_writable, array( $wp_filesystem, 'is_writable' ) );
+ if ( $files_writable !== $check_is_writable ) {
+ $files_not_writable = array_diff_key( $check_is_writable, $files_writable );
+ foreach ( $files_not_writable as $relative_file_not_writable => $file_not_writable ) {
+ // If the writable check failed, chmod file to 0644 and try again, same as copy_dir().
+ $wp_filesystem->chmod( $file_not_writable, FS_CHMOD_FILE );
+ if ( $wp_filesystem->is_writable( $file_not_writable ) )
+ unset( $files_not_writable[ $relative_file_not_writable ] );
+ }
+
+ // Store package-relative paths (the key) of non-writable files in the WP_Error object.
+ $error_data = version_compare( $old_wp_version, '3.7-beta2', '>' ) ? array_keys( $files_not_writable ) : '';
+
+ if ( $files_not_writable )
+ return new WP_Error( 'files_not_writable', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), implode( ', ', $error_data ) );
+ }
+ }
+
+ apply_filters( 'update_feedback', __( 'Enabling Maintenance mode…' ) );
+ // Create maintenance file to signal that we are upgrading
+ $maintenance_string = '';
+ $maintenance_file = $to . '.maintenance';
+ $wp_filesystem->delete($maintenance_file);
+ $wp_filesystem->put_contents($maintenance_file, $maintenance_string, FS_CHMOD_FILE);
+
+ apply_filters( 'update_feedback', __( 'Copying the required files…' ) );
+ // Copy new versions of WP files into place.
+ $result = _copy_dir( $from . $distro, $to, $skip );
+ if ( is_wp_error( $result ) )
+ $result = new WP_Error( $result->get_error_code(), $result->get_error_message(), substr( $result->get_error_data(), strlen( $to ) ) );
+
+ // Check to make sure everything copied correctly, ignoring the contents of wp-content
+ $skip = array( 'wp-content' );
+ $failed = array();
+ if ( isset( $checksums ) && is_array( $checksums ) ) {
+ foreach ( $checksums as $file => $checksum ) {
+ if ( 0 === strpos( $file, 'wp-content' ) )
+ continue;
+
+ if ( file_exists( ABSPATH . $file ) && md5_file( ABSPATH . $file ) == $checksum )
+ $skip[] = $file;
+ else
+ $failed[] = $file;
+ }
+ }
+
+ // Some files didn't copy properly
+ if ( ! empty( $failed ) ) {
+ $total_size = 0;
+ // Find the local version of the working directory
+ $working_dir_local = WP_CONTENT_DIR . '/upgrade/' . basename( $from ) . $distro;
+ foreach ( $failed as $file ) {
+ if ( file_exists( $working_dir_local . $file ) )
+ $total_size += filesize( $working_dir_local . $file );
+ }
+
+ // If we don't have enough free space, it isn't worth trying again.
+ // Unlikely to be hit due to the check in unzip_file().
+ $available_space = @disk_free_space( ABSPATH );
+ if ( $available_space && $total_size >= $available_space ) {
+ $result = new WP_Error( 'disk_full', __( 'There is not enough free disk space to complete the update.' ) );
+ } else {
+ $result = _copy_dir( $from . $distro, $to, $skip );
+ if ( is_wp_error( $result ) )
+ $result = new WP_Error( $result->get_error_code() . '_retry', $result->get_error_message(), substr( $result->get_error_data(), strlen( $to ) ) );
+ }
+ }
+
+ // Custom Content Directory needs updating now.
+ // Copy Languages
+ if ( !is_wp_error($result) && $wp_filesystem->is_dir($from . $distro . 'wp-content/languages') ) {
+ if ( WP_LANG_DIR != ABSPATH . WPINC . '/languages' || @is_dir(WP_LANG_DIR) )
+ $lang_dir = WP_LANG_DIR;
+ else
+ $lang_dir = WP_CONTENT_DIR . '/languages';
+
+ if ( !@is_dir($lang_dir) && 0 === strpos($lang_dir, ABSPATH) ) { // Check the language directory exists first
+ $wp_filesystem->mkdir($to . str_replace(ABSPATH, '', $lang_dir), FS_CHMOD_DIR); // If it's within the ABSPATH we can handle it here, otherwise they're out of luck.
+ clearstatcache(); // for FTP, Need to clear the stat cache
+ }
+
+ if ( @is_dir($lang_dir) ) {
+ $wp_lang_dir = $wp_filesystem->find_folder($lang_dir);
+ if ( $wp_lang_dir ) {
+ $result = copy_dir($from . $distro . 'wp-content/languages/', $wp_lang_dir);
+ if ( is_wp_error( $result ) )
+ $result = new WP_Error( $result->get_error_code() . '_languages', $result->get_error_message(), substr( $result->get_error_data(), strlen( $wp_lang_dir ) ) );
+ }
+ }
+ }
+
+ apply_filters( 'update_feedback', __( 'Disabling Maintenance mode…' ) );
+ // Remove maintenance file, we're done with potential site-breaking changes
+ $wp_filesystem->delete( $maintenance_file );
+
+ // 3.5 -> 3.5+ - an empty twentytwelve directory was created upon upgrade to 3.5 for some users, preventing installation of Twenty Twelve.
+ if ( '3.5' == $old_wp_version ) {
+ if ( is_dir( WP_CONTENT_DIR . '/themes/twentytwelve' ) && ! file_exists( WP_CONTENT_DIR . '/themes/twentytwelve/style.css' ) ) {
+ $wp_filesystem->delete( $wp_filesystem->wp_themes_dir() . 'twentytwelve/' );
+ }
+ }
+
+ // Copy New bundled plugins & themes
+ // This gives us the ability to install new plugins & themes bundled with future versions of WordPress whilst avoiding the re-install upon upgrade issue.
+ // $development_build controls us overwriting bundled themes and plugins when a non-stable release is being updated
+ if ( !is_wp_error($result) && ( ! defined('CORE_UPGRADE_SKIP_NEW_BUNDLED') || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) ) {
+ foreach ( (array) $_new_bundled_files as $file => $introduced_version ) {
+ // If a $development_build or if $introduced version is greater than what the site was previously running
+ if ( $development_build || version_compare( $introduced_version, $old_wp_version, '>' ) ) {
+ $directory = ('/' == $file[ strlen($file)-1 ]);
+ list($type, $filename) = explode('/', $file, 2);
+
+ // Check to see if the bundled items exist before attempting to copy them
+ if ( ! $wp_filesystem->exists( $from . $distro . 'wp-content/' . $file ) )
+ continue;
+
+ if ( 'plugins' == $type )
+ $dest = $wp_filesystem->wp_plugins_dir();
+ elseif ( 'themes' == $type )
+ $dest = trailingslashit($wp_filesystem->wp_themes_dir()); // Back-compat, ::wp_themes_dir() did not return trailingslash'd pre-3.2
+ else
+ continue;
+
+ if ( ! $directory ) {
+ if ( ! $development_build && $wp_filesystem->exists( $dest . $filename ) )
+ continue;
+
+ if ( ! $wp_filesystem->copy($from . $distro . 'wp-content/' . $file, $dest . $filename, FS_CHMOD_FILE) )
+ $result = new WP_Error( "copy_failed_for_new_bundled_$type", __( 'Could not copy file.' ), $dest . $filename );
+ } else {
+ if ( ! $development_build && $wp_filesystem->is_dir( $dest . $filename ) )
+ continue;
+
+ $wp_filesystem->mkdir($dest . $filename, FS_CHMOD_DIR);
+ $_result = copy_dir( $from . $distro . 'wp-content/' . $file, $dest . $filename);
+
+ // If a error occurs partway through this final step, keep the error flowing through, but keep process going.
+ if ( is_wp_error( $_result ) ) {
+ if ( ! is_wp_error( $result ) )
+ $result = new WP_Error;
+ $result->add( $_result->get_error_code() . "_$type", $_result->get_error_message(), substr( $_result->get_error_data(), strlen( $dest ) ) );
+ }
+ }
+ }
+ } //end foreach
+ }
+
+ // Handle $result error from the above blocks
+ if ( is_wp_error($result) ) {
+ $wp_filesystem->delete($from, true);
+ return $result;
+ }
+
+ // Remove old files
+ foreach ( $_old_files as $old_file ) {
+ $old_file = $to . $old_file;
+ if ( !$wp_filesystem->exists($old_file) )
+ continue;
+ $wp_filesystem->delete($old_file, true);
+ }
+
+ // Upgrade DB with separate request
+ apply_filters('update_feedback', __('Upgrading database…'));
+ $db_upgrade_url = admin_url('upgrade.php?step=upgrade_db');
+ wp_remote_post($db_upgrade_url, array('timeout' => 60));
+
+ // Remove working directory
+ $wp_filesystem->delete($from, true);
+
+ // Force refresh of update information
+ if ( function_exists('delete_site_transient') )
+ delete_site_transient('update_core');
+ else
+ delete_option('update_core');
+
+ // If we made it this far:
+ do_action( '_core_updated_successfully', $wp_version );
+
+ // Clear the option that blocks auto updates after failures, now that we've been successful.
+ if ( function_exists( 'delete_site_option' ) )
+ delete_site_option( 'auto_core_update_failed' );
+
+ return $wp_version;
+}
+
+/**
+ * Copies a directory from one location to another via the WordPress Filesystem Abstraction.
+ * Assumes that WP_Filesystem() has already been called and setup.
+ *
+ * This is a temporary function for the 3.1 -> 3.2 upgrade, as well as for those upgrading to
+ * 3.7+
+ *
+ * @ignore
+ * @since 3.2.0
+ * @since 3.7.0 Updated not to use a regular expression for the skip list
+ * @see copy_dir()
+ *
+ * @param string $from source directory
+ * @param string $to destination directory
+ * @param array $skip_list a list of files/folders to skip copying
+ * @return mixed WP_Error on failure, True on success.
+ */
+function _copy_dir($from, $to, $skip_list = array() ) {
+ global $wp_filesystem;
+
+ $dirlist = $wp_filesystem->dirlist($from);
+
+ $from = trailingslashit($from);
+ $to = trailingslashit($to);
+
+ foreach ( (array) $dirlist as $filename => $fileinfo ) {
+ if ( in_array( $filename, $skip_list ) )
+ continue;
+
+ if ( 'f' == $fileinfo['type'] ) {
+ if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) ) {
+ // If copy failed, chmod file to 0644 and try again.
+ $wp_filesystem->chmod( $to . $filename, FS_CHMOD_FILE );
+ if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE) )
+ return new WP_Error( 'copy_failed__copy_dir', __( 'Could not copy file.' ), $to . $filename );
+ }
+ } elseif ( 'd' == $fileinfo['type'] ) {
+ if ( !$wp_filesystem->is_dir($to . $filename) ) {
+ if ( !$wp_filesystem->mkdir($to . $filename, FS_CHMOD_DIR) )
+ return new WP_Error( 'mkdir_failed__copy_dir', __( 'Could not create directory.' ), $to . $filename );
+ }
+
+ // generate the $sub_skip_list for the subdirectory as a sub-set of the existing $skip_list
+ $sub_skip_list = array();
+ foreach ( $skip_list as $skip_item ) {
+ if ( 0 === strpos( $skip_item, $filename . '/' ) )
+ $sub_skip_list[] = preg_replace( '!^' . preg_quote( $filename, '!' ) . '/!i', '', $skip_item );
+ }
+
+ $result = _copy_dir($from . $filename, $to . $filename, $sub_skip_list);
+ if ( is_wp_error($result) )
+ return $result;
+ }
+ }
+ return true;
+}
+
+/**
+ * Redirect to the About WordPress page after a successful upgrade.
+ *
+ * This function is only needed when the existing install is older than 3.4.0.
+ *
+ * @since 3.3.0
+ *
+ */
+function _redirect_to_about_wordpress( $new_version ) {
+ global $wp_version, $pagenow, $action;
+
+ if ( version_compare( $wp_version, '3.4-RC1', '>=' ) )
+ return;
+
+ // Ensure we only run this on the update-core.php page. The Core_Upgrader may be used in other contexts.
+ if ( 'update-core.php' != $pagenow )
+ return;
+
+ if ( 'do-core-upgrade' != $action && 'do-core-reinstall' != $action )
+ return;
+
+ // Load the updated default text localization domain for new strings
+ load_default_textdomain();
+
+ // See do_core_upgrade()
+ show_message( __('WordPress updated successfully') );
+
+ // self_admin_url() won't exist when upgrading from <= 3.0, so relative URLs are intentional.
+ show_message( '' . sprintf( __( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click here.' ), $new_version, 'about.php?updated' ) . '' );
+ show_message( '' . sprintf( __( 'Welcome to WordPress %1$s. Learn more.' ), $new_version, 'about.php?updated' ) . '' );
+ echo '';
+ ?>
+
+