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<?php |
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namespace HM\BackUpWordPress; |
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/** |
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* Perform a file backup using the PclZip PHP fallback library |
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*/ |
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class Pclzip_File_Backup_Engine extends File_Backup_Engine { |
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public function __construct() { |
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parent::__construct(); |
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} |
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public function load_pclzip() { |
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if ( ! defined( 'PCLZIP_TEMPORARY_DIR' ) ) { |
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define( 'PCLZIP_TEMPORARY_DIR', trailingslashit( PATH::get_path() ) ); |
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} |
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require_once( ABSPATH . 'wp-admin/includes/class-pclzip.php' ); |
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} |
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public function backup() { |
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$this->load_pclzip(); |
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if ( ! class_exists( 'PclZip' ) ) { |
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return false; |
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} |
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global $_hmbkp_exclude_string; |
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$_hmbkp_exclude_string = $this->get_excludes_regex(); |
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$zip = new \PclZip( $this->get_backup_filepath() ); |
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$result = $zip->create( Path::get_root(), \PCLZIP_OPT_REMOVE_PATH, Path::get_root(), \PCLZIP_CB_PRE_ADD, 'HM\BackUpWordPress\hmbkp_pclzip_callback' ); |
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if ( 0 === $result ) { |
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$this->error( __CLASS__, $zip->errorInfo( true ) ); |
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} |
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unset( $GLOBALS['_hmbkp_exclude_string'] ); |
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return $this->verify_backup(); |
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} |
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/** |
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* Generate the exclude params for pclzip |
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* |
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* Takes the exclude rules and formats them as regex |
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* |
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* @return string |
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*/ |
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public function get_excludes_regex() { |
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$wildcard = '([\s\S]*?)'; |
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$separator = '|'; |
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$excludes = $this->excludes->get_excludes(); |
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foreach ( $excludes as $key => &$rule ) { |
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$file = $absolute = $fragment = false; |
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// Files don't end with / |
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View Code Duplication |
if ( ! in_array( substr( $rule, - 1 ), array( '\\', '/' ) ) ) { |
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$file = true; |
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} // If rule starts with a / then treat as absolute path |
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elseif ( in_array( substr( $rule, 0, 1 ), array( '\\', '/' ) ) ) { |
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$absolute = true; |
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} // Otherwise treat as dir fragment |
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else { |
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$fragment = true; |
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} |
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// Strip $this->root and conform |
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$rule = str_ireplace( Path::get_root(), '', untrailingslashit( wp_normalize_path( $rule ) ) ); |
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// Strip the preceeding slash |
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if ( in_array( substr( $rule, 0, 1 ), array( '\\', '/' ) ) ) { |
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$rule = substr( $rule, 1 ); |
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} |
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$rule = str_replace( '.', '\.', $rule ); |
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// Convert any existing wildcards |
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if ( '*' !== $wildcard && false !== strpos( $rule, '*' ) ) { |
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$rule = str_replace( '*', $wildcard, $rule ); |
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} |
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// Add a start carrot to absolute urls for pclzip |
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if ( $absolute ) { |
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$rule = '^' . $rule; |
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} |
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} |
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return implode( $separator, $excludes ); |
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} |
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} |
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function hmbkp_pclzip_callback( $event, $file ) { |
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global $_hmbkp_exclude_string; |
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// Don't try to add unreadable files. |
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if ( ! is_readable( $file['filename'] ) || ! file_exists( $file['filename'] ) ) { |
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return false; |
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} |
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// Match everything else past the exclude list |
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if ( $_hmbkp_exclude_string && preg_match( '(' . $_hmbkp_exclude_string . ')', $file['filename'] ) ) { |
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return false; |
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} |
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return true; |
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} |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: