| 1 |
<?php |
| 2 |
/** |
| 3 |
* Handles core integrity scan. |
| 4 |
* |
| 5 |
* @package WP_Defender\Behavior\Scan |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace WP_Defender\Behavior\Scan; |
| 9 |
|
| 10 |
use ArrayIterator; |
| 11 |
use WP_Defender\Traits\IO; |
| 12 |
use WP_Defender\Model\Scan; |
| 13 |
use Calotes\Component\Behavior; |
| 14 |
use WP_Defender\Model\Scan_Item; |
| 15 |
use WP_Defender\Component\Timer; |
| 16 |
use WP_Defender\Helper\Analytics\Scan as Scan_Analytics; |
| 17 |
use WP_Defender\Controller\Scan as Scan_Controller; |
| 18 |
|
| 19 |
/** |
| 20 |
* Handles core integrity scan. |
| 21 |
*/ |
| 22 |
class Core_Integrity extends Behavior { |
| 23 |
|
| 24 |
use IO; |
| 25 |
|
| 26 |
public const CACHE_CHECKSUMS = 'wd_cache_checksums', ISSUE_CHECKSUMS = 'wd_issue_checksums'; |
| 27 |
|
| 28 |
/** |
| 29 |
* Check that the folder is empty. |
| 30 |
* |
| 31 |
* @param string $path The path to check. |
| 32 |
* |
| 33 |
* @return bool |
| 34 |
*/ |
| 35 |
protected function is_dir_empty( $path ) { |
| 36 |
$rfiles = scandir( $path ); |
| 37 |
foreach ( $rfiles as $rfile ) { |
| 38 |
if ( ! in_array( $rfile, array( '.', '..' ), true ) ) { |
| 39 |
return false; |
| 40 |
} |
| 41 |
} |
| 42 |
|
| 43 |
return true; |
| 44 |
} |
| 45 |
|
| 46 |
/** |
| 47 |
* Check if the core file is on touch. |
| 48 |
* |
| 49 |
* @return bool |
| 50 |
*/ |
| 51 |
public function core_integrity_check(): bool { |
| 52 |
$checksums = $this->get_checksum(); |
| 53 |
if ( false === $checksums ) { |
| 54 |
return false; |
| 55 |
} |
| 56 |
$core_files = get_site_option( Gather_Fact::CACHE_CORE, array() ); |
| 57 |
$core_files = new ArrayIterator( $core_files ); |
| 58 |
$timer = new Timer(); |
| 59 |
$model = $this->owner->scan; |
| 60 |
$pos = (int) $model->task_checkpoint; |
| 61 |
if ( $pos > 0 ) { |
| 62 |
$core_files->seek( $pos ); |
| 63 |
} |
| 64 |
$this->log( sprintf( 'current pos %s', $pos ), Scan_Controller::SCAN_LOG ); |
| 65 |
while ( $core_files->valid() ) { |
| 66 |
if ( ! $timer->check() ) { |
| 67 |
|
| 68 |
$reason = 'break out cause too long'; |
| 69 |
|
| 70 |
/** |
| 71 |
* Retrieves an instance of the Scan_Analytics class. |
| 72 |
* |
| 73 |
* @var Scan_Analytics $scan_analytics |
| 74 |
*/ |
| 75 |
$scan_analytics = wd_di()->get( Scan_Analytics::class ); |
| 76 |
|
| 77 |
$scan_analytics->track_feature( |
| 78 |
$scan_analytics::EVENT_SCAN_FAILED, |
| 79 |
array( |
| 80 |
$scan_analytics::EVENT_SCAN_FAILED_PROP => $scan_analytics::EVENT_SCAN_FAILED_ERROR, |
| 81 |
'Error_Reason' => $reason, |
| 82 |
) |
| 83 |
); |
| 84 |
|
| 85 |
$this->log( $reason, Scan_Controller::SCAN_LOG ); |
| 86 |
break; |
| 87 |
} |
| 88 |
|
| 89 |
if ( $model->is_issue_whitelisted( $core_files->current() ) ) { |
| 90 |
// This is whitelisted, so do nothing. |
| 91 |
$this->log( sprintf( 'skip %s because of file is whitelisted', $core_files->current() ), Scan_Controller::SCAN_LOG ); |
| 92 |
$core_files->next(); |
| 93 |
continue; |
| 94 |
} |
| 95 |
|
| 96 |
if ( $model->is_issue_ignored( $core_files->current() ) ) { |
| 97 |
// This is ignored, so do nothing. |
| 98 |
$this->log( sprintf( 'skip %s because of file is ignored', $core_files->current() ), Scan_Controller::SCAN_LOG ); |
| 99 |
$core_files->next(); |
| 100 |
continue; |
| 101 |
} |
| 102 |
|
| 103 |
$file = $core_files->current(); |
| 104 |
// Get relative so we can compare. |
| 105 |
$abs_path = defender_replace_line( ABSPATH ); |
| 106 |
$rev_file = str_replace( $abs_path, '', $file ); |
| 107 |
// Remove directory separator on the left. |
| 108 |
$rev_file = ltrim( $rev_file, DIRECTORY_SEPARATOR ); |
| 109 |
|
| 110 |
if ( isset( $checksums[ $rev_file ] ) ) { |
| 111 |
if ( ! $this->compare_hashes( $file, $checksums[ $rev_file ] ) ) { |
| 112 |
$this->log( sprintf( 'modified %s', $file ), Scan_Controller::SCAN_LOG ); |
| 113 |
$model->add_item( |
| 114 |
Scan_Item::TYPE_INTEGRITY, |
| 115 |
array( |
| 116 |
'file' => $file, |
| 117 |
'type' => 'modified', |
| 118 |
) |
| 119 |
); |
| 120 |
} |
| 121 |
} else { |
| 122 |
if ( is_dir( $file ) ) { |
| 123 |
if ( $this->is_dir_empty( $core_files->current() ) ) { |
| 124 |
$this->log( |
| 125 |
sprintf( 'skip %s because of non-WP directory is empty', $core_files->current() ), |
| 126 |
Scan_Controller::SCAN_LOG |
| 127 |
); |
| 128 |
$core_files->next(); |
| 129 |
continue; |
| 130 |
} |
| 131 |
$item_type = 'dir'; |
| 132 |
} else { |
| 133 |
$item_type = 'unversion'; |
| 134 |
} |
| 135 |
|
| 136 |
$model->add_item( |
| 137 |
Scan_Item::TYPE_INTEGRITY, |
| 138 |
array( |
| 139 |
'file' => $file, |
| 140 |
'type' => $item_type, |
| 141 |
) |
| 142 |
); |
| 143 |
} |
| 144 |
$model->calculate_percent( $core_files->key() * 100 / $core_files->count(), 2 ); |
| 145 |
if ( 0 === $core_files->key() % 100 ) { |
| 146 |
// We should update the model percent each 100 files, so we have some progress ont he screen$pos * 100 / $core_files->count(). |
| 147 |
$model->save(); |
| 148 |
} |
| 149 |
$core_files->next(); |
| 150 |
} |
| 151 |
if ( $core_files->valid() ) { |
| 152 |
// Save the current progress and quit. |
| 153 |
$model->task_checkpoint = $core_files->key(); |
| 154 |
} else { |
| 155 |
// We will check if we have any ignore issue from last scan, so we can bring it here. |
| 156 |
$last = Scan::get_last(); |
| 157 |
if ( is_object( $last ) ) { |
| 158 |
$ignored_issues = $last->get_issues( Scan_Item::TYPE_INTEGRITY, Scan_Item::STATUS_IGNORE ); |
| 159 |
foreach ( $ignored_issues as $issue ) { |
| 160 |
$model->add_item( Scan_Item::TYPE_INTEGRITY, $issue->raw_data, Scan_Item::STATUS_IGNORE ); |
| 161 |
} |
| 162 |
} |
| 163 |
// Done, reset this, so we can use it later. |
| 164 |
$model->task_checkpoint = ''; |
| 165 |
} |
| 166 |
$model->save(); |
| 167 |
|
| 168 |
return ! $core_files->valid(); |
| 169 |
} |
| 170 |
|
| 171 |
/** |
| 172 |
* Fetch the checksums. |
| 173 |
* |
| 174 |
* @return bool|array |
| 175 |
*/ |
| 176 |
protected function get_checksum() { |
| 177 |
$cache = get_site_option( self::CACHE_CHECKSUMS, false ); |
| 178 |
if ( is_array( $cache ) ) { |
| 179 |
return $cache; |
| 180 |
} |
| 181 |
$this->log( 'Fetch checksums, should only once', Scan_Controller::SCAN_LOG ); |
| 182 |
|
| 183 |
global $wp_version, $wp_local_package; |
| 184 |
|
| 185 |
if ( ! function_exists( 'get_core_checksums' ) ) { |
| 186 |
include_once ABSPATH . 'wp-admin/includes/update.php'; |
| 187 |
} |
| 188 |
$checksums = get_core_checksums( $wp_version, empty( $wp_local_package ) ? 'en_US' : $wp_local_package ); |
| 189 |
if ( false === $checksums ) { |
| 190 |
$this->log( 'Error from fetching checksums from wp.org', Scan_Controller::SCAN_LOG ); |
| 191 |
$scan = $this->owner->scan; |
| 192 |
$scan->status = Scan::STATUS_IDLE; |
| 193 |
$scan->save(); |
| 194 |
|
| 195 |
update_site_option( self::ISSUE_CHECKSUMS, time() ); |
| 196 |
// We can't send to MP event now because the Scan process continues to ping wp.org. This can cause a event's surge. |
| 197 |
return false; |
| 198 |
} |
| 199 |
|
| 200 |
if ( isset( $checksums[ $wp_version ] ) ) { |
| 201 |
/** |
| 202 |
* Sometimes the API returns the format [$wp_version]=>'...' when locale not right. |
| 203 |
* Use this as fail-safe. |
| 204 |
*/ |
| 205 |
$checksums = $checksums[ $wp_version ]; |
| 206 |
} |
| 207 |
if ( is_array( $checksums ) ) { |
| 208 |
foreach ( $checksums as $key => $checksum ) { |
| 209 |
$formatted_key = defender_replace_line( $key ); |
| 210 |
|
| 211 |
if ( $key !== $formatted_key ) { |
| 212 |
$checksums[ $formatted_key ] = $checksum; |
| 213 |
unset( $checksums[ $key ] ); |
| 214 |
} |
| 215 |
} |
| 216 |
} |
| 217 |
|
| 218 |
update_site_option( self::CACHE_CHECKSUMS, $checksums ); |
| 219 |
|
| 220 |
return $checksums; |
| 221 |
} |
| 222 |
} |
| 223 |
|
