File "class-itsec-backup.php"
Full Path: /home/siazco/grocery.siazco.se/wp-content/plugins/better-wp-security/core/modules/backup/class-itsec-backup.php
File size: 10.49 KB
MIME-type: text/x-php
Charset: utf-8
<?php
/**
* Backup execution.
*
* Handles database backups at scheduled interval.
*
* @since 4.0.0
*
* @package iThemes_Security
*/
class ITSEC_Backup {
/**
* The module's saved options
*
* @since 4.0.0
* @access private
* @var array
*/
private $settings;
/**
* Setup the module's functionality.
*
* Loads the backup detection module's unpriviledged functionality including
* performing the scans themselves.
*
* @since 4.0.0
*
* @return void
*/
function run() {
$this->settings = ITSEC_Modules::get_settings( 'backup' );
add_action( 'itsec_execute_backup_cron', array( $this, 'do_backup' ) );
add_filter( 'debug_information', [ $this, 'add_site_health_info' ] );
add_filter( 'itsec_notifications', array( $this, 'register_notification' ) );
add_filter( 'itsec_backup_notification_strings', array( $this, 'notification_strings' ) );
if ( class_exists( 'pb_backupbuddy' ) ) {
// Don't run when BackupBuddy is active.
return;
}
ITSEC_Core::get_scheduler()->register_custom_schedule( 'backup', DAY_IN_SECONDS * $this->settings['interval'] );
if ( ! $this->settings['enabled'] || $this->settings['interval'] <= 0 ) {
// Don't run when scheduled backups aren't enabled or the interval is zero or less.
return;
}
add_action( 'itsec_scheduled_backup', array( $this, 'scheduled_callback' ) );
}
/**
* Called when it is time for the backup to run.
*/
public function scheduled_callback() {
$this->do_backup();
}
/**
* Public function to get lock and call backup.
*
* Attempts to get a lock to prevent concurrent backups and calls the backup function itself.
*
* @since 4.0.0
*
* @param boolean $one_time whether this is a one time backup
*
* @return array|WP_Error false on error or nothing
*/
public function do_backup( $one_time = false ) {
if ( ! ITSEC_Lib::get_lock( 'backup', 180 ) ) {
return new WP_Error( 'itsec-backup-do-backup-already-running', __( 'Unable to create a backup at this time since a backup is currently being created. If you wish to create an additional backup, please wait a few minutes before trying again.', 'better-wp-security' ) );
}
ITSEC_Lib::set_minimum_memory_limit( '256M' );
$result = $this->execute_backup( $one_time );
ITSEC_Lib::release_lock( 'backup' );
if ( is_wp_error( $result ) ) {
return $result;
}
switch ( $this->settings['method'] ) {
case 'both':
$message = __( 'Backup complete. The backup was sent to the selected email recipients and was saved locally.', 'better-wp-security' );
break;
case 'email':
$message = __( 'Backup complete. The backup was sent to the selected email recipients.', 'better-wp-security' );
break;
default:
$message = __( 'Backup complete. The backup was saved locally.', 'better-wp-security' );
break;
}
$result['message'] = $message;
return $result;
}
/**
* Executes backup function.
*
* Handles the execution of database backups.
*
* @since 4.0.0
*
* @param bool $one_time whether this is a one-time backup
*
* @return array|WP_Error
*/
private function execute_backup( $one_time = false ) {
global $wpdb;
require_once( ITSEC_Core::get_core_dir() . 'lib/class-itsec-lib-directory.php' );
$dir = $this->settings['location'];
$result = ITSEC_Lib_Directory::create( $dir );
if ( is_wp_error( $result ) ) {
return $result;
} elseif ( ! $result ) {
return new WP_Error( 'itsec-backup-failed-to-create-backup-dir', esc_html__( 'Unable to create the backup directory due to an unknown error.', 'better-wp-security' ) );
}
$file = "$dir/backup-" . substr( sanitize_title( get_bloginfo( 'name' ) ), 0, 20 ) . '-' . current_time( 'Ymd-His' ) . '-' . wp_generate_password( 30, false ) . '.sql';
if ( false === ( $fh = @fopen( $file, 'w' ) ) ) {
return new WP_Error( 'itsec-backup-failed-to-write-backup-file', esc_html__( 'Unable to write the backup file. This may be due to a permissions or disk space issue.', 'better-wp-security' ) );
}
if ( false === $one_time ) {
ITSEC_Modules::set_setting( 'backup', 'last_run', ITSEC_Core::get_current_time_gmt() );
}
$tables = $wpdb->get_col( $wpdb->prepare( 'SHOW TABLES LIKE %s', $wpdb->base_prefix . '%' ) );
$max_rows_per_query = 1000;
foreach ( $tables as $table ) {
$create_table = $wpdb->get_var( "SHOW CREATE TABLE `$table`;", 1 ) . ';' . PHP_EOL . PHP_EOL;
$create_table = preg_replace( '/^CREATE TABLE /', 'CREATE TABLE IF NOT EXISTS ', $create_table );
@fwrite( $fh, $create_table );
if ( in_array( substr( $table, strlen( $wpdb->prefix ) ), $this->settings['exclude'] ) ) {
// User selected to exclude the data from this table.
fwrite( $fh, PHP_EOL . PHP_EOL );
continue;
}
$num_fields = count( $wpdb->get_results( "DESCRIBE `$table`;" ) );
$offset = 0;
$has_more_rows = true;
while ( $has_more_rows ) {
$rows = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM `$table` LIMIT %d, %d", $offset, $max_rows_per_query ), ARRAY_N );
foreach ( $rows as $row ) {
$sql = "INSERT INTO `$table` VALUES (";
for ( $j = 0; $j < $num_fields; $j ++ ) {
if ( isset( $row[ $j ] ) ) {
$row[ $j ] = addslashes( $row[ $j ] );
if ( PHP_EOL !== "\n" ) {
$row[ $j ] = preg_replace( '#' . PHP_EOL . '#', "\n", $row[ $j ] );
}
$sql .= '"' . $row[ $j ] . '"';
} else {
$sql .= '""';
}
if ( $j < ( $num_fields - 1 ) ) {
$sql .= ',';
}
}
$sql .= ");" . PHP_EOL;
@fwrite( $fh, $sql );
}
if ( count( $rows ) < $max_rows_per_query ) {
$has_more_rows = false;
} else {
$offset += $max_rows_per_query;
}
}
@fwrite( $fh, PHP_EOL . PHP_EOL );
}
@fwrite( $fh, PHP_EOL . PHP_EOL );
@fclose( $fh );
$backup_file = $file;
if ( $this->settings['zip'] ) {
if ( ! class_exists( 'PclZip' ) ) {
require( ABSPATH . 'wp-admin/includes/class-pclzip.php' );
}
$zip_file = substr( $file, 0, - 4 ) . '.zip';
$pclzip = new PclZip( $zip_file );
if ( 0 != $pclzip->create( $file, PCLZIP_OPT_REMOVE_PATH, $dir ) ) {
@unlink( $file );
$file = $zip_file;
}
}
if ( 'local' !== $this->settings['method'] || true === $one_time ) {
$mail_success = $this->send_mail( $file );
} else {
$mail_success = null;
}
$log_data = array(
'settings' => $this->settings,
'mail_success' => $mail_success,
'file' => $backup_file,
'output_file' => $file,
'size' => @filesize( $file ),
);
if ( 'email' === $this->settings['method'] ) {
@unlink( $file );
} elseif ( $this->settings['retain'] > 0 ) {
$files = scandir( $dir, 1 );
if ( is_array( $files ) && count( $files ) > 0 ) {
$count = 0;
foreach ( $files as $file ) {
if ( ! strstr( $file, 'backup' ) ) {
continue;
}
if ( $count >= $this->settings['retain'] ) {
@unlink( trailingslashit( $dir ) . $file );
}
$count ++;
}
}
}
if ( 'both' === $this->settings['method'] ) {
if ( false === $mail_success ) {
ITSEC_Log::add_warning( 'backup', 'email-failed-file-stored', $log_data );
} else {
ITSEC_Log::add_notice( 'backup', 'email-succeeded-file-stored', $log_data );
}
} elseif ( 'email' === $this->settings['method'] ) {
if ( false === $mail_success ) {
ITSEC_Log::add_error( 'backup', 'email-failed', $log_data );
} else {
ITSEC_Log::add_notice( 'backup', 'email-succeeded', $log_data );
}
} else {
ITSEC_Log::add_notice( 'backup', 'file-stored', $log_data );
}
return $log_data;
}
private function send_mail( $file ) {
$nc = ITSEC_Core::get_notification_center();
$mail = $nc->mail();
$mail->add_header(
esc_html__( 'Database Backup', 'better-wp-security' ),
sprintf( esc_html__( 'Site Database Backup for %s', 'better-wp-security' ),
'<b>' . date_i18n( get_option( 'date_format' ) ) . '</b>' ),
false,
esc_html__( 'Attached is the database backup file for your site.', 'better-wp-security' ),
);
$mail->add_section_heading( esc_html__( 'Website', 'better-wp-security' ) );
$mail->add_text( $mail->get_display_url() );
$mail->add_section_heading( esc_html__( 'Date', 'better-wp-security' ) );
$mail->add_text( esc_html( date_i18n( get_option( 'date_format' ) ) ) );
$mail->add_footer();
$mail->set_recipients( $nc->get_recipients( 'backup' ) );
$subject = $mail->prepend_site_url_to_subject( $nc->get_subject( 'backup' ) );
$subject = apply_filters( 'itsec_backup_email_subject', $subject );
$mail->set_subject( $subject, false );
$mail->add_attachment( $file );
return $nc->send( 'backup', $mail );
}
/**
* Add backup count to Site Health.
*
* @param array $info
*
* @return array
*/
public function add_site_health_info( $info ) {
$method = ITSEC_Modules::get_setting( 'backup', 'method' );
if ( 'email' === $method ) {
if ( 'file' === ITSEC_Modules::get_setting( 'global', 'log_type' ) ) {
return $info;
}
$count = ITSEC_Log::get_number_of_entries( [ 'module' => 'backup' ] );
} else {
$dir = trailingslashit( ITSEC_Modules::get_setting( 'backup', 'location' ) );
if ( ! $dir || ! @file_exists( $dir ) ) {
return $info;
}
$files = scandir( $dir, SCANDIR_SORT_DESCENDING );
$files = array_unique( $files );
$count = count( $files );
}
$info['solid-security']['fields']['total-backups'] = [
'label' => __( 'Total Backups', 'better-wp-security' ),
'value' => $count,
'debug' => $count,
];
return $info;
}
/**
* Register the Backup notification email.
*
* @param array $notifications
*
* @return array
*/
public function register_notification( $notifications ) {
$method = ITSEC_Modules::get_setting( 'backup', 'method' );
if ( 'local' !== $method ) {
$notifications['backup'] = array(
'subject_editable' => true,
'recipient' => ITSEC_Notification_Center::R_EMAIL_LIST,
'schedule' => ITSEC_Notification_Center::S_NONE,
'module' => 'backup',
);
}
return $notifications;
}
/**
* Register the strings for the Backup email.
*
* @return array
*/
public function notification_strings() {
return array(
'label' => __( 'Database Backup', 'better-wp-security' ),
'description' => sprintf(
__( 'The %1$sDatabase Backup%2$s module will send a copy of any backups to the email addresses listed below.', 'better-wp-security' ),
ITSEC_Core::get_link_for_settings_route( ITSEC_Core::get_settings_module_route( 'backup' ) ),
'</a>'
),
'subject' => __( 'Database Backup', 'better-wp-security' ),
);
}
}