<?php
/**
* Class for BackWPup cron methods
*/
class BackWPup_Cron {
/**
* @param string $arg
*/
public static function run( $arg = 'restart' ) {
if ( ! is_main_site( get_current_blog_id() ) ) {
return;
}
if ( $arg === 'restart' ) {
//reschedule restart
wp_schedule_single_event( time() + 60, 'backwpup_cron', array( 'arg' => 'restart' ) );
//restart job if not working or a restart imitated
self::cron_active( array( 'run' => 'restart' ) );
return;
}
$arg = is_numeric( $arg ) ? abs( (int) $arg ) : 0;
if ( ! $arg ) {
return;
}
//check that job exits
$jobids = BackWPup_Option::get_job_ids( 'activetype', 'wpcron' );
if ( ! in_array( $arg, $jobids, true ) ) {
return;
}
//delay other job start for 5 minutes if already one is running
$job_object = BackWPup_Job::get_working_data();
if ( $job_object ) {
wp_schedule_single_event( time() + 300, 'backwpup_cron', array( 'arg' => $arg ) );
return;
}
//reschedule next job run
$cron_next = self::cron_next( BackWPup_Option::get( $arg, 'cron' ) );
wp_schedule_single_event( $cron_next, 'backwpup_cron', array( 'arg' => $arg ) );
//start job
self::cron_active( array(
'run' => 'cronrun',
'jobid' => $arg,
) );
}
/**
* Check Jobs worked and Cleanup logs and so on
*/
public static function check_cleanup() {
$job_object = BackWPup_Job::get_working_data();
$log_folder = get_site_option( 'backwpup_cfg_logfolder' );
$log_folder = BackWPup_File::get_absolute_path( $log_folder );
// check aborted jobs for longer than a tow hours, abort them courtly and send mail
if ( is_object( $job_object ) && ! empty( $job_object->logfile ) ) {
$not_worked_time = microtime( true ) - $job_object->timestamp_last_update;
if ( $not_worked_time > 3600 ) {
$job_object->log( E_USER_ERROR,
__( 'Aborted, because no progress for one hour!', 'backwpup' ),
__FILE__,
__LINE__ );
unlink( BackWPup::get_plugin_data( 'running_file' ) );
$job_object->update_working_data();
}
}
//Compress not compressed logs
if ( is_readable( $log_folder ) && function_exists( 'gzopen' )
&& get_site_option( 'backwpup_cfg_gzlogs' ) && ! is_object( $job_object ) ) {
//Compress old not compressed logs
try {
$dir = new BackWPup_Directory( $log_folder );
$jobids = BackWPup_Option::get_job_ids();
foreach ( $dir as $file ) {
if ( $file->isWritable() && '.html' == substr( $file->getFilename(), - 5 ) ) {
$compress = new BackWPup_Create_Archive( $file->getPathname() . '.gz' );
if ( $compress->add_file( $file->getPathname() ) ) {
unlink( $file->getPathname() );
//change last logfile in jobs
foreach ( $jobids as $jobid ) {
$job_logfile = BackWPup_Option::get( $jobid, 'logfile' );
if ( ! empty( $job_logfile ) && $job_logfile === $file->getPathname() ) {
BackWPup_Option::update( $jobid, 'logfile', $file->getPathname() . '.gz' );
}
}
}
$compress->close();
unset( $compress );
}
}
} catch ( UnexpectedValueException $e ) {
$job_object->log( sprintf( __( "Could not open path: %s", 'backwpup' ), $e->getMessage() ),
E_USER_WARNING );
}
}
//Jobs cleanings
if ( ! $job_object ) {
//remove restart cron
wp_clear_scheduled_hook( 'backwpup_cron', array( 'arg' => 'restart' ) );
//temp cleanup
BackWPup_Job::clean_temp_folder();
}
//check scheduling jobs that not found will removed because there are single scheduled
$activejobs = BackWPup_Option::get_job_ids( 'activetype', 'wpcron' );
foreach ( $activejobs as $jobid ) {
$cron_next = wp_next_scheduled( 'backwpup_cron', array( 'arg' => $jobid ) );
if ( ! $cron_next || $cron_next < time() ) {
wp_unschedule_event( $cron_next, 'backwpup_cron', array( 'arg' => $jobid ) );
$cron_next = BackWPup_Cron::cron_next( BackWPup_Option::get( $jobid, 'cron' ) );
wp_schedule_single_event( $cron_next, 'backwpup_cron', array( 'arg' => $jobid ) );
}
}
}
/**
* Start job if in cron and run query args are set.
*/
public static function cron_active( $args = array() ) {
//only if cron active
if ( ! defined( 'DOING_CRON' ) || ! DOING_CRON ) {
return;
}
if ( ! is_array( $args ) ) {
$args = array();
}
if ( isset( $_GET['backwpup_run'] ) ) {
$args['run'] = sanitize_text_field( $_GET['backwpup_run'] );
}
if ( isset( $_GET['_nonce'] ) ) {
$args['nonce'] = sanitize_text_field( $_GET['_nonce'] );
}
if ( isset( $_GET['jobid'] ) ) {
$args['jobid'] = absint( $_GET['jobid'] );
}
$args = array_merge( array(
'run' => '',
'nonce' => '',
'jobid' => 0,
),
$args );
if ( ! in_array( $args['run'],
array( 'test', 'restart', 'runnow', 'runnowalt', 'runext', 'cronrun' ),
true ) ) {
return;
}
//special header
@session_write_close();
@header( 'Content-Type: text/html; charset=' . get_bloginfo( 'charset' ), true );
@header( 'X-Robots-Tag: noindex, nofollow', true );
nocache_headers();
//on test die for fast feedback
if ( $args['run'] === 'test' ) {
die( 'BackWPup test request' );
}
if ( $args['run'] === 'restart' ) {
$job_object = BackWPup_Job::get_working_data();
// Restart if cannot find job
if ( ! $job_object ) {
BackWPup_Job::start_http( 'restart' );
return;
}
//restart job if not working or a restart wished
$not_worked_time = microtime( true ) - $job_object->timestamp_last_update;
if ( ! $job_object->pid || $not_worked_time > 300 ) {
BackWPup_Job::start_http( 'restart' );
return;
}
}
// generate normal nonce
$nonce = substr( wp_hash( wp_nonce_tick() . 'backwpup_job_run-' . $args['run'], 'nonce' ), - 12, 10 );
//special nonce on external start
if ( $args['run'] === 'runext' ) {
$nonce = get_site_option( 'backwpup_cfg_jobrunauthkey' );
}
if ( $args['run'] === 'cronrun' ) {
$nonce = '';
}
// check nonce
if ( $nonce !== $args['nonce'] ) {
return;
}
//check runext is allowed for job
if ( $args['run'] === 'runext' ) {
$jobids_link = BackWPup_Option::get_job_ids( 'activetype', 'link' );
$jobids_easycron = BackWPup_Option::get_job_ids( 'activetype', 'easycron' );
$jobids_external = array_merge( $jobids_link, $jobids_easycron );
if ( ! in_array( $args['jobid'], $jobids_external, true ) ) {
return;
}
}
//run BackWPup job
BackWPup_Job::start_http( $args['run'], $args['jobid'] );
}
/**
*
* Get the local time timestamp of the next cron execution
*
* @param string $cronstring cron (* * * * *).
*
* @return int Timestamp
*/
public static function cron_next( $cronstring ) {
$cron = array();
$cronarray = array();
//Cron string
list( $cronstr['minutes'], $cronstr['hours'], $cronstr['mday'], $cronstr['mon'], $cronstr['wday'] ) = explode( ' ',
trim( $cronstring ),
5 );
//make arrays form string
foreach ( $cronstr as $key => $value ) {
if ( strstr( $value, ',' ) ) {
$cronarray[ $key ] = explode( ',', $value );
} else {
$cronarray[ $key ] = array( 0 => $value );
}
}
//make arrays complete with ranges and steps
foreach ( $cronarray as $cronarraykey => $cronarrayvalue ) {
$cron[ $cronarraykey ] = array();
foreach ( $cronarrayvalue as $value ) {
//steps
$step = 1;
if ( strstr( $value, '/' ) ) {
list( $value, $step ) = explode( '/', $value, 2 );
}
//replace weekday 7 with 0 for sundays
if ( $cronarraykey === 'wday' ) {
$value = str_replace( '7', '0', $value );
}
//ranges
if ( strstr( $value, '-' ) ) {
list( $first, $last ) = explode( '-', $value, 2 );
if ( ! is_numeric( $first ) || ! is_numeric( $last ) || $last > 60 || $first > 60 ) { //check
return PHP_INT_MAX;
}
if ( $cronarraykey === 'minutes' && $step < 5 ) { //set step minimum to 5 min.
$step = 5;
}
$range = array();
for ( $i = $first; $i <= $last; $i = $i + $step ) {
$range[] = $i;
}
$cron[ $cronarraykey ] = array_merge( $cron[ $cronarraykey ], $range );
} elseif ( $value === '*' ) {
$range = array();
if ( $cronarraykey === 'minutes' ) {
if ( $step < 10 ) { //set step minimum to 5 min.
$step = 10;
}
for ( $i = 0; $i <= 59; $i = $i + $step ) {
$range[] = $i;
}
}
if ( $cronarraykey === 'hours' ) {
for ( $i = 0; $i <= 23; $i = $i + $step ) {
$range[] = $i;
}
}
if ( $cronarraykey === 'mday' ) {
for ( $i = $step; $i <= 31; $i = $i + $step ) {
$range[] = $i;
}
}
if ( $cronarraykey === 'mon' ) {
for ( $i = $step; $i <= 12; $i = $i + $step ) {
$range[] = $i;
}
}
if ( $cronarraykey === 'wday' ) {
for ( $i = 0; $i <= 6; $i = $i + $step ) {
$range[] = $i;
}
}
$cron[ $cronarraykey ] = array_merge( $cron[ $cronarraykey ], $range );
} else {
if ( ! is_numeric( $value ) || (int) $value > 60 ) {
return PHP_INT_MAX;
}
$cron[ $cronarraykey ] = array_merge( $cron[ $cronarraykey ], array( 0 => absint( $value ) ) );
}
}
}
//generate years
$year = (int) gmdate( 'Y' );
for ( $i = $year; $i < $year + 100; $i ++ ) {
$cron['year'][] = $i;
}
//calc next timestamp
$current_timestamp = (int) current_time( 'timestamp' );
foreach ( $cron['year'] as $year ) {
foreach ( $cron['mon'] as $mon ) {
foreach ( $cron['mday'] as $mday ) {
if ( ! checkdate( $mon, $mday, $year ) ) {
continue;
}
foreach ( $cron['hours'] as $hours ) {
foreach ( $cron['minutes'] as $minutes ) {
$timestamp = gmmktime( $hours, $minutes, 0, $mon, $mday, $year );
if ( $timestamp && in_array( (int) gmdate( 'j', $timestamp ),
$cron['mday'],
true ) && in_array( (int) gmdate( 'w', $timestamp ),
$cron['wday'],
true ) && $timestamp > $current_timestamp ) {
return $timestamp - ( (int) get_option( 'gmt_offset' ) * 3600 );
}
}
}
}
}
}
return PHP_INT_MAX;
}
}
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