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<?php /** * File: class-boldgrid-backup-admin-utility.php * * @link https://www.boldgrid.com * @since 1.0 * * @package Boldgrid_Backup * @subpackage Boldgrid_Backup/admin * @copyright BoldGrid * @version $Id$ * @author BoldGrid <support@boldgrid.com> / // phpcs:disable WordPress.VIP /* * Class: Boldgrid_Backup_Admin_Utility * * @since 1.0 / class Boldgrid_Backup_Admin_Utility { /* * Convert bytes to a human-readable measure. * * @since 1.0 * * @static * * @param int $bytes Number of bytes. * @param int $decimals Number of decimal places. * @return string / public static function bytes_to_human( $bytes = 0, $decimals = 2 ) { // If $bytes is not a number, then fail. if ( ! is_numeric( $bytes ) ) { return 'INVALID'; } // Ensure the $decimals is an integer. $decimals = (int) $decimals; $type = array( 'B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB', ); $index = 0; while ( $bytes >= 1024 ) { $bytes /= 1024; $index ++; } $return = number_format( $bytes, $decimals, '.', '' ) . ' ' . $type[ $index ]; $return = str_replace( '.00', '', $return ); return $return; } /* * Create a site identifier. * * @since 1.0 * * @static * * @return string The site identifier. / public static function create_site_id() { // Get the siteurl. if ( is_multisite() ) { // Use the siteurl from blog id 1. $siteurl = get_site_url( 1 ); } else { // Get the current siteurl. $siteurl = get_site_url(); } // Make an identifier. $site_id = explode( '/', $siteurl ); unset( $site_id[0] ); unset( $site_id[1] ); $site_id = implode( '_', $site_id ); return $site_id; } /* * Database find and replace. * * Take note we also have self::option_find_replace that does a find and replace specific to option * values because they are serialized. It uses self::str_replace_recursive. * * @since SINCEVERSION * * @param string $table * @param string $column * @param string $find * @param string $replace / public static function db_find_replace( $table, $column, $find, $replace ) { global $wpdb; // phpcs:disable WordPress.DB.PreparedSQLPlaceholders.UnquotedComplexPlaceholder, WordPress.DB.PreparedSQLPlaceholders.LikeWildcardsInQuery $wpdb->query( $wpdb->prepare( 'UPDATE `' . $wpdb->prefix . '%1$s` SET `%2$s` = REPLACE( `%3$s`, "%4$s", "%5$s" ) WHERE `%6$s` LIKE "%%%7$s%%";', $table, $column, $column, $find, $replace, $column, $wpdb->esc_like( $find ) ) ); // phpcs:enable } /* * Custom error handler. * * Catches everything (including warnings) and throws an excpetion. * * Can be used in this manner: * set_error_handler( array( 'Boldgrid_Backup_Admin_Utility', 'handle_error' ) ); * try{ * // Try something * } catch( Exception $e ) { $e->getMessage(); * } * restore_error_handler(); * * @since 1.6.0 * * @static * * @param int $errno Error number. (can be a PHP Error level constant). * @param string $errstr Error description. * @param string $errfile File in which the error occurs. * @param int $errline Line number where the error is situated. * @throws ErrorException Error exception object. / public static function handle_error( $errno, $errstr, $errfile = false, $errline = false ) { // A set of errors to ignore. $skips = array( / * Ignore mcrypt errors (DEPRECATED as of PHP 7.1.0). * * When using phpseclib for sftp, we're catching these warnings even * though the author used @suppression with their mcrypt calls. There's * a lot of information online about these errors within phpseclib, * but I'll reference the following: * * https://github.com/phpseclib/phpseclib/issues/1028 * # mcrypt is only used if it's available. If mcrypt is not available * either a pure-PHP implementation is used or OpenSSL is used. The * prioritization is as follows: OpenSSL > mcrypt > pure-PHP. mcrypt * and OpenSSL are loads faster than the pure-PHP implementation. * # So mcrypt offers a 45x speedup over the internal mode. OpenSSL * offers a 6.5x speedup over mcrypt. * * https://github.com/phpseclib/phpseclib/issues/1229 * # phpseclib (all branches) are unit tested on PHP 7.2: * https://travis-ci.org/phpseclib/phpseclib * They all pass in spite of using mcrypt. idk if you've ever used * Travis CI / phpunit but an E_DEPRECATED notice will result in a * failing unit test and yet the unit tests are all passing. / 'Function mcrypt_list_algorithms() is deprecated', 'Function mcrypt_module_open() is deprecated', 'Function mcrypt_generic_init() is deprecated', 'Function mcrypt_generic() is deprecated', 'Function mdecrypt_generic() is deprecated', ); if ( in_array( $errstr, $skips, true ) ) { return; } throw new ErrorException( $errstr, 0, $errno, $errfile, $errline ); } /* * Translate a ZipArchive error code into a human-readable message. * * @since 1.0 * * @static * * @param int $error_code An error code from a ZipArchive constant. * @return string An error message. / public static function translate_zip_error( $error_code = null ) { switch ( $error_code ) { case ZipArchive::ER_EXISTS: $message = esc_html__( 'File already exists', 'boldgrid-backup' ); break; case ZipArchive::ER_INCONS: $message = esc_html__( 'Zip archive inconsistent', 'boldgrid-backup' ); break; case ZipArchive::ER_INVAL: $message = esc_html__( 'Invalid argument', 'boldgrid-backup' ); break; case ZipArchive::ER_MEMORY: $message = esc_html__( 'Malloc failure', 'boldgrid-backup' ); break; case ZipArchive::ER_NOENT: $message = esc_html__( 'No such file', 'boldgrid-backup' ); break; case ZipArchive::ER_NOZIP: $message = esc_html__( 'Not a zip archive', 'boldgrid-backup' ); break; case ZipArchive::ER_OPEN: $message = esc_html__( 'Cannot open file', 'boldgrid-backup' ); break; case ZipArchive::ER_READ: $message = esc_html__( 'Read error', 'boldgrid-backup' ); break; case ZipArchive::ER_SEEK: $message = esc_html__( 'Seek error', 'boldgrid-backup' ); break; default: $message = esc_html__( 'No error code was passed', 'boldgrid-backup' ); break; } return $message; } /* * Translate a file upload error code into a human-readable message. * * @since 1.2.2 * * @static * * @see http://php.net/manual/en/features.file-upload.errors.php * * @param int $error_code An error code from a file upload error constant. * @return string An error message. / public static function translate_upload_error( $error_code ) { switch ( $error_code ) { case UPLOAD_ERR_INI_SIZE: $message = esc_html__( 'The uploaded file exceeds the upload_max_filesize directive in php.ini', 'boldgrid-backup' ); break; case UPLOAD_ERR_FORM_SIZE: $message = esc_html__( 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form', 'boldgrid-backup' ); break; case UPLOAD_ERR_PARTIAL: $message = esc_html__( 'The uploaded file was only partially uploaded', 'boldgrid-backup' ); break; case UPLOAD_ERR_NO_FILE: $message = esc_html__( 'No file was uploaded', 'boldgrid-backup' ); break; case UPLOAD_ERR_NO_TMP_DIR: $message = esc_html__( 'Missing a temporary folder', 'boldgrid-backup' ); break; case UPLOAD_ERR_CANT_WRITE: $message = esc_html__( 'Failed to write file to disk', 'boldgrid-backup' ); break; case UPLOAD_ERR_EXTENSION: $message = esc_html__( 'File upload stopped by extension', 'boldgrid-backup' ); break; default: $message = esc_html( 'Unknown upload error', 'boldgrid-backup' ); break; } return $message; } /* * Make a directory or file writable, if exists. * * @since 1.0 * * @global WP_Filesystem $wp_filesystem The WordPress Filesystem API global object. * * @static * * @param string $filepath A path to a directory or file. * @return bool Success. / public static function make_writable( $filepath ) { // Validate file path string. $filepath = realpath( $filepath ); if ( empty( $filepath ) ) { return true; } // Connect to the WordPress Filesystem API. global $wp_filesystem; // If path exists and is not writable, then make writable. if ( $wp_filesystem->exists( $filepath ) ) { if ( ! $wp_filesystem->is_writable( $filepath ) ) { if ( $wp_filesystem->is_dir( $filepath ) ) { // Is a directory. if ( ! $wp_filesystem->chmod( $filepath, 0755 ) ) { return false; } } else { // Is a file. if ( ! $wp_filesystem->chmod( $filepath, 0644 ) ) { return false; } } } } return true; } /* * Find and replace for option values. * * Similar to self::db_find_replace. This one is special however because it ends up using * self::str_replace_recursive for the replacement mechanism. * * @since SINCEVERSION * * @param string $find * @param string $replace / public static function option_find_replace( $find, $replace ) { global $wpdb; $matched_options = $wpdb->get_results( $wpdb->prepare( 'SELECT `option_name` FROM `' . $wpdb->prefix . 'options` WHERE `option_value` LIKE %s;', '%' . $wpdb->esc_like( $find ) . '%' ), ARRAY_N ); if ( empty( $matched_options ) ) { return; } foreach ( $matched_options as $option_name ) { $option_value = get_option( $option_name[0] ); $option_value = self::str_replace_recursive( $find, $replace, $option_value ); update_option( $option_name[0], $option_value ); } } /* * Increase the PHP max execution time. * * @since 1.2.2 * * @static * * @link http://php.net/manual/en/info.configuration.php#ini.max-execution-time * * @param string $max_execution_time A php.ini style max_execution_time. * @return bool Success of the operation. / public static function bump_max_execution( $max_execution_time ) { // Abort if in safe mode or max_execution_time is not changable. if ( ini_get( 'safe_mode' ) \|\| ! wp_is_ini_value_changeable( 'max_execution_time' ) ) { return false; } // Validate input max_execution_time. if ( ! is_numeric( $max_execution_time ) \|\| $max_execution_time < 0 ) { return false; } // Get the current max execution time set for PHP. $current_max = ini_get( 'max_execution_time' ); // If the current max execution time is less than specified, then try to increase it. // PHP default is "30". if ( $current_max < $max_execution_time ) { set_time_limit( $max_execution_time ); if ( false === ini_set( 'max_execution_time', $max_execution_time ) ) { // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.runtime_configuration_ini_set return false; } } return true; } /* * Get plugin data. * * This is a wrapper function for WordPress' get_plugin_data function, * which requires the full path to a plugin. This method only requires * folder/file.php * * @since 1.5.3 * * @param string $plugin Plugin slug ("boldgrid-backup/boldgrid-backup.php"). * @return array / public function get_plugin_data( $plugin ) { $path = dirname( BOLDGRID_BACKUP_PATH ) . DIRECTORY_SEPARATOR . $plugin; $data = get_plugin_data( $path ); return $data; } /* * Get the file upload limit. * * @since 1.2.2 * * @static * * @see wp_convert_hr_to_bytes() in wp-includes/load.php * @link http://php.net/manual/en/ini.core.php#ini.post-max-size * @link http://php.net/manual/en/ini.core.php#ini.upload-max-filesize * * @return int The upload/post limit in bytes. / public static function get_upload_limit() { // Get PHP setting value for post_max_size. // PHP default is "8M". $post_max_size = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) ); // Get PHP setting value for upload_max_filesize. // PHP default is "2M". $upload_max_filesize = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) ); // Determine the minimum value. $min = min( $post_max_size, $upload_max_filesize ); // Return the resulting minimum value (int in bytes). return $min; } /* * Increase the PHP memory limit. * * @since 1.2.2 * * @static * * @see wp_is_ini_value_changeable() in wp-includes/default-constants.php * @see wp_convert_hr_to_bytes() in wp-includes/load.php * @link http://php.net/manual/en/ini.core.php#ini.memory-limit * * @param string $memory_limit A php.ini style memory_limit string. * @return bool Success of the operation. / public static function bump_memory_limit( $memory_limit ) { // Abort if in safe mode or memory_limit is not changable. if ( ini_get( 'safe_mode' ) \|\| ! wp_is_ini_value_changeable( 'memory_limit' ) ) { return false; } // Convert memory limit string to an integer in bytes. $memory_limit_int = wp_convert_hr_to_bytes( $memory_limit ); // Get the current upload max filesize set for PHP. $current_limit_int = wp_convert_hr_to_bytes( ini_get( 'memory_limit' ) ); // Apply a WordPress filter to help ensure the setting. apply_filters( 'admin_memory_limit', $memory_limit_int ); // If the current memory limit is less than specified, then try to increase it. // PHP default is "128M". if ( $current_limit_int < $memory_limit_int ) { if ( false === ini_set( 'memory_limit', $memory_limit_int ) ) { // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.runtime_configuration_ini_set return false; } } return true; } /* * Attempt to increase the PHP max upload size. * * The upload_max_filesize is set as "PHP_INI_PERDIR"; * The entry can be set in "php.ini", ".htaccess", "httpd.conf" or ".user.ini". * We can attempt to set it to a higher limit via a filter, as WordPress may have previously * reduced it. * * @since 1.2.2 * * @static * * @see wp_convert_hr_to_bytes() in wp-includes/load.php * @link http://php.net/manual/en/ini.sect.safe-mode.php#ini.safe-mode * @link http://php.net/manual/en/ini.core.php#ini.file-uploads * @link http://php.net/manual/en/ini.core.php#ini.max-file-uploads * * @param string $max_filesize A php.ini style upload_max_filesize string. * @return bool Success of the operation. / public static function bump_upload_limit( $max_filesize ) { // Abort if in safe mode. if ( ini_get( 'safe_mode' ) ) { return false; } // Abort if file_uploads is "0" (disabled). // PHP default is "1" (enabled). if ( ! ini_get( 'file_uploads' ) ) { return false; } // Abort if max_file_uploads is "0" (disabled). // PHP default is "20". if ( ! ini_get( 'max_file_uploads' ) ) { return false; } // Convert upload max filesize string to an integer in bytes. $max_filesize_int = wp_convert_hr_to_bytes( $max_filesize ); // Apply a WordPress filter to help ensure the setting. apply_filters( 'upload_size_limit', $max_filesize_int, $max_filesize_int, $max_filesize_int ); return true; } /* * Determine whether or not Total Upkeep is active. * * The fact that Total Upkeep is calling this method shows that it is installed and activated. * However, it we are not listed in the "active_plugins" option, then we are in the middle of * activation. * * Because the library may not be available until activation, this method can help us determine * whether or not we should instantiate library classes at a certain time. * * @since 1.13.5 * * @return bool / public static function is_active() { $active_plugins = get_option( 'active_plugins', array() ); return in_array( 'boldgrid-backup/boldgrid-backup.php', $active_plugins, true ); } /* * Determine whether or not the current user is an administrator. * * @since 1.14.14 * * @return bool / public static function is_user_admin() { return current_user_can( 'update_plugins' ); } /* * Determine whether or not the given $page is the current. * * @since 1.7.0 * * @global string $pagenow * * @param string $page The page to check for in $_GET. * @return boolean / public static function is_admin_page( $page ) { global $pagenow; return 'admin.php' === $pagenow && ! empty( $_GET['page'] ) && $page === $_GET['page']; // phpcs:ignore WordPress.CSRF.NonceVerification } /* * Check if a file is a ZIP archive file. * * @since 1.2.2 * * @static * * @see get_filesystem_method() in wp-admin/includes/file.php * * @param string $file A file path to be checked. * @return bool / public static function is_zip_file( $file ) { // Validate input filename. if ( empty( $file ) ) { return false; } // Create a ZipArchive object. $zip = new ZipArchive(); // Check the ZIP file for consistency. $status = $zip->open( $file, ZipArchive::CHECKCONS ); // Close the ZIP file. $zip->close(); // Check the result. $result = ( true === $status ); // Return the result. return $result; } /* * Check if a specific file exists in a ZIP archive. * * @since 1.2.2 * * @static * * @link http://php.net/manual/en/class.ziparchive.php * * @param string $zip_file Path to a ZIP file. * @param string $locate_file A filename or path to be located. * @param bool $is_path Is the input file a path. * @return bool / public static function zip_file_exists( $zip_file, $locate_file, $is_path = false ) { // Validate input parameters. if ( empty( $zip_file ) \|\| empty( $locate_file ) ) { return false; } // Create a ZipArchive object. $zip = new ZipArchive(); // Check the ZIP file for consistency. $status = $zip->open( $zip_file, ZipArchive::CHECKCONS ); if ( true !== $status ) { // Invalid ZIP file. return false; } // Locate the filename or path. if ( $is_path ) { $index = $zip->locateName( $locate_file ); } else { $index = $zip->locateName( $locate_file, ZipArchive::FL_NODIR ); } // Close the ZIP file. $zip->close(); // Return the result. return (bool) $index; } /* * Chmod a directory or file. * * @since 1.2.2 * * @global WP_Filesystem $wp_filesystem The WordPress Filesystem API global object. * * @static * * @param string $file Path to a directory or file. * @param int $mode (Optional) The permissions as octal number, usually 0644 for files, * 0755 for dirs. * @return bool / public static function chmod( $file, $mode = false ) { // Connect to the WordPress Filesystem API. global $wp_filesystem; // Modify the file permissions. $result = $wp_filesystem->chmod( $file, $mode ); // Return the result. return $result; } /* * Fix wp-config.php file. * * If restoring "wp-config.php", then ensure that the credentials remain intact. * * @since 1.2.2 * * @see http://us1.php.net/manual/en/function.preg-replace.php#103985 * @global WP_Filesystem $wp_filesystem The WordPress Filesystem API global object. * * @static * * @return bool / public static function fix_wpconfig() { // Connect to the WordPress Filesystem API. global $wp_filesystem; // Set the file path. $file = ABSPATH . 'wp-config.php'; // Abort if the file does not exist. if ( ! $wp_filesystem->exists( $file ) ) { return false; } // Get the file contents. $file_contents = $wp_filesystem->get_contents( $file ); // Create an array containing the definition names to replace. $definitions = array( 'DB_NAME', 'DB_USER', 'DB_PASSWORD', 'DB_HOST', 'AUTH_KEY', 'SECURE_AUTH_KEY', 'LOGGED_IN_KEY', 'NONCE_KEY', 'AUTH_SALT', 'SECURE_AUTH_SALT', 'LOGGED_IN_SALT', 'NONCE_SALT', ); // Replace the definitions. foreach ( $definitions as $definition ) { // If the definition does not exist, then skip it. if ( ! defined( $definition ) ) { continue; } // Replace $n ($0-$99) backreferences before preg_replace. // @see http://us1.php.net/manual/en/function.preg-replace.php#103985 . $value = preg_replace( '/\$(\d)/', '\\\$$1', constant( $definition ) ); // Replace definition. $file_contents = preg_replace( '#define.?' . $definition . '.;#', "define('" . $definition . "', '" . $value . "');", $file_contents, 1 ); // If there was a failure, then abort. if ( null === $file_contents ) { return false; } } // Write the changes to file. $wp_filesystem->put_contents( $file, $file_contents, 0600 ); return true; } /* * A wrapper for WordPress' flush_rewrite_rules. * * Wrapper function is necessary because rewriting the .htaccess only works if the * save_mod_rewrite_rules() function exists, which only does in admin. This method ensures it's * there. * * @link https://core.trac.wordpress.org/ticket/51805 * * @param bool $hard Whether to update .htaccess (hard flush) or just update rewrite_rules option * (soft flush). / public static function flush_rewrite_rules( $hard = true ) { if ( $hard && ! function_exists( 'save_mod_rewrite_rules' ) ) { require_once ABSPATH . 'wp-admin/includes/misc.php'; } flush_rewrite_rules( $hard ); } /* * Replace the siteurl in the WordPress database. * * @since 1.2.3 * * @see Boldgrid_Backup_Admin_Utility::str_replace_recursive() * @global wpdb $wpdb The WordPress database class object. * * @static * * @param array $args { * An array of arguments. * * @type string $old_siteurl The old/restored siteurl to find and be replaced. * @type string $siteurl The siteurl to replace the old siteurl. * @type bool $flush Whether or not to flush the rewrite rules. * } * @return bool / public static function update_siteurl( $args = array() ) { wp_parse_args( $args, array( 'flush' => false, ) ); $old_siteurl = $args['old_siteurl']; $new_siteurl = $args['siteurl']; // Validate. if ( false === filter_var( $old_siteurl, FILTER_VALIDATE_URL ) ) { return false; } if ( false === filter_var( $new_siteurl, FILTER_VALIDATE_URL ) ) { return false; } / * Ensure the site url does not end in a trailing slash. * * This is best practice. IE when you manually edit your home / siteurl in the dashboard on * the Settings > General page, WordPress will automatically untrailingslahsit. / $old_siteurl = untrailingslashit( $old_siteurl ); $new_siteurl = untrailingslashit( $new_siteurl ); / * Find and replace option values. * * Do this before updating the "siteurl" and "home" via the update_option calls below. Otherwise, * we'll runing into: * # Old url: domain.com * # Requested new url: domain.com/514/514 * # Resulting url: domain.com/514/514/514/514 / self::option_find_replace( $old_siteurl, $new_siteurl ); remove_all_filters( 'pre_update_option_siteurl' ); update_option( 'siteurl', $new_siteurl ); update_option( 'home', $new_siteurl ); $replacers = array( // Post content. array( 'table' => 'posts', 'column' => 'post_content', 'find' => $old_siteurl, 'replace' => $new_siteurl, ), // Custom urls in menus. array( 'table' => 'postmeta', 'column' => 'meta_value', 'find' => $old_siteurl, 'replace' => $new_siteurl, ), ); foreach ( $replacers as $replacer ) { self::db_find_replace( $replacer['table'], $replacer['column'], $replacer['find'], $replacer['replace'] ); } // Check if the upload_url_path needs to be updated. $upload_url_path = get_option( 'upload_url_path' ); if ( ! empty( $upload_url_path ) ) { $upload_url_path = str_replace( $old_siteurl, $new_siteurl, $upload_url_path ); update_option( 'upload_url_path', $upload_url_path ); } / * If requested (false by default), flush the rewrite rules. * * Why not make this a standard operation? We would except for the fact that the * Boldgrid_Backup_Admin_Restore_Helper class adds the "flush_rewrite_rules" function to the * "shutdown" hook. Does it need to be done at shutdown? Not entirely sure. * * This optional action is helpful when updating the site url outside of a restoration process, * IE a stand alone REST call to update the site url. / if ( ! empty( $args['flush'] ) ) { self::flush_rewrite_rules(); } return true; } /* * Replace string(s) in a string or recurively in an array or object. * * @since 1.2.3 * * @static * * @param string $search Search string. * @param string $replace Replace string. * @param mixed $subject Input subject (array\|object\|string). * @return mixed The input subject with recursive string replacements. / public static function str_replace_recursive( $search, $replace, $subject ) { if ( is_string( $subject ) ) { $subject = str_replace( $search, $replace, $subject ); } elseif ( is_array( $subject ) ) { foreach ( $subject as $index => $element ) { // Recurse. $subject[ $index ] = self::str_replace_recursive( $search, $replace, $element ); } } elseif ( is_object( $subject ) ) { foreach ( $subject as $index => $element ) { // Recurse. $subject->$index = self::str_replace_recursive( $search, $replace, $element ); } } return $subject; } /* * Convert a unix time to user's local time. * * @since 1.5.3 * * @param int $time Time in UNIX seconds. * @return int / public function time( $time ) { $gmt_offset = get_option( 'gmt_offset' ); if ( empty( $gmt_offset ) \|\| ! is_numeric( $gmt_offset ) ) { return $time; } return $time + ( $gmt_offset HOUR_IN_SECONDS ); } /** * Alternative to WordPress' trailingslashit function. * * WordPress' native function does not take into account Windows / the * DIRECTORY_SEPARATOR. * * @since 1.5.1 * * @static * * @param string $string A string. * @return string */ public static function trailingslashit( $string ) { switch ( DIRECTORY_SEPARATOR ) { case '/': $string = str_replace( '\\', '/', $string ); break; case '\\': $string = str_replace( '/', '\\', $string ); break; } return untrailingslashit( $string ) . DIRECTORY_SEPARATOR; } }

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