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<?php
namespace WP_Defender\Behavior\Scan_Item;
use Calotes\Component\Behavior;
use WP_Defender\Component\Error_Code;
use WP_Defender\Component\Quarantine as Quarantine_Component;
use WP_Defender\Model\Scan;
use WP_Defender\Model\Scan_Item;
use WP_Defender\Traits\Formats;
use WP_Defender\Traits\IO;
use WP_Defender\Traits\Plugin;
use WP_Error;
class Plugin_Integrity extends Behavior {
use Formats, IO, Plugin;
public const URL_PLUGIN_VCS = 'https://plugins.svn.wordpress.org/%s/tags/%s/%s';
/**
* Trunk URL.
*
* @var string Trunk path of the plugin.
*/
public const URL_PLUGIN_VCS_TRUNK = 'https://plugins.svn.wordpress.org/%s/trunk/%s';
/**
* Return general data so we can output on frontend.
*
* @return array
*/
public function to_array(): array {
$data = $this->owner->raw_data;
$file = $data['file'];
$file_created_at = @filemtime( $file );
if ( $file_created_at ) {
$file_created_at = $this->format_date_time( $file_created_at );
} else {
$file_created_at = 'n/a';
}
$file_size = @filesize( $file );
if ( ! $file_size ) {
$file_size = 'n/a';
} else {
$file_size = $this->format_bytes_into_readable( $file_size );
}
$is_quarantinable = $this->is_likely_wporg_slug(
$this->get_plugin_directory_name( $this->owner->raw_data['file'] )
);
$quarantine_data = class_exists( 'WP_Defender\Component\Quarantine' ) ?
wd_di()->get( Quarantine_Component::class )->scan_item_data( $this->owner ) :
[ 'is_quarantinable' => $is_quarantinable ];
return array_merge(
[
'id' => $this->owner->id,
'type' => Scan_Item::TYPE_PLUGIN_CHECK,
'file_name' => pathinfo( $file, PATHINFO_BASENAME ),
'full_path' => $file,
'date_added' => $file_created_at,
'size' => $file_size,
'scenario' => $data['type'],
'short_desc' => $this->get_short_description(),
],
$quarantine_data
);
}
/**
* Get plugin data.
*
* @param $slug
*
* @return array
*/
private function find_plugin_by_slug( $slug ) {
foreach ( $this->get_plugins() as $file => $data ) {
// Comparison is faster, but the vast majority of plugins installed are not single file plugins.
if ( $file === $slug || 0 === strpos( $file, $slug . '/' ) ) {
return $data;
}
}
return [];
}
/**
* We will get the origin code by looking into svn repo.
*
* @return false|string|WP_Error
*/
private function get_origin_code() {
$data = $this->owner->raw_data;
$file = wp_normalize_path( $data['file'] );
$ds = DIRECTORY_SEPARATOR;
$relative_path = str_replace( wp_normalize_path( WP_PLUGIN_DIR ) . $ds, '', $file );
if ( empty( $relative_path ) ) {
return new WP_Error( 'defender_broken_file_path', __( 'Failed relative file path.', 'wpdef' ) );
}
if ( false === strpos( $relative_path, '/' ) ) {
// Todo: get correct hashes for single-file plugins. Separate case for 'Hello Dolly'.
$slug_and_path = 'hello.php' === $relative_path ? 'hello-dolly' : $relative_path;
$path_data = [ $slug_and_path, $slug_and_path ];
} else {
$path_data = explode( $ds, $relative_path, 2 );
}
if ( ! empty( $path_data ) ) {
$plugin_slug = $path_data[0];
$file_path = $path_data[1];
} else {
return new WP_Error( 'defender_broken_file_path', __( 'Broken file path.', 'wpdef' ) );
}
$plugin_data = $this->find_plugin_by_slug( $plugin_slug );
if ( empty( $plugin_data ) ) {
return new WP_Error( 'defender_broken_file_path', __( 'Empty plugin data.', 'wpdef' ) );
}
// Get original from wp.org e.g. https://plugins.svn.wordpress.org/hello-dolly/tags/1.6/.
$source_file_url = sprintf(
self::URL_PLUGIN_VCS,
$plugin_slug,
$plugin_data['Version'],
$file_path
);
// If file doesn't exist then get the latest stable file as a fallback.
if ( ! $this->is_origin_file_exists( $source_file_url ) ) {
$source_file_url = sprintf(
self::URL_PLUGIN_VCS_TRUNK,
$plugin_slug,
$file_path
);
}
if ( ! function_exists( 'download_url' ) ) {
require_once ABSPATH . 'wp-admin' . $ds . 'includes' . $ds . 'file.php';
}
$tmp = download_url( $source_file_url );
if ( is_wp_error( $tmp ) ) {
return $tmp;
}
$content = file_get_contents( $tmp );
@unlink( $tmp );
return $content;
}
/**
* Restore the file with its origin content.
*
* @return void|array|WP_Error
*/
public function resolve() {
$data = $this->owner->raw_data;
if ( 'modified' !== $data['type'] ) {
// Should not be here unless case changed.
return;
}
$origin = $this->get_origin_code();
if ( false === $origin || is_wp_error( $origin ) ) {
return;
}
$path = $data['file'];
$ret = @file_put_contents( $path, $origin );// phpcs:ignore
if ( $ret ) {
$scan = Scan::get_last();
$scan->remove_issue( $this->owner->id );
$this->log( sprintf( '%s is deleted', $path ), 'scan.log' );
return [ 'message' => __( 'This item has been resolved.', 'wpdef' ) ];
} else {
return new WP_Error(
'defender_permissions_denied',
__( 'Permissions Denied. Defender does not have the needed permissions to edit the file. Please change file permissions to 640 or contact your hosting provider so they could change them for you.', 'wpdef' )
);
}
}
/**
* @return array
*/
public function ignore(): array {
$scan = Scan::get_last();
$scan->ignore_issue( $this->owner->id );
return [ 'message' => __( 'The suspicious file has been successfully ignored.', 'wpdef' ) ];
}
/**
* @return array
*/
public function unignore(): array {
$scan = Scan::get_last();
$scan->unignore_issue( $this->owner->id );
return [ 'message' => __( 'The suspicious file has been successfully restored.', 'wpdef' ) ];
}
/**
* Delete the file or whole folder.
*
* @return array|WP_Error
*/
public function delete() {
$data = $this->owner->raw_data;
$scan = Scan::get_last();
if ( 'unversion' === $data['type'] && unlink( $data['file'] ) ) {
$scan->remove_issue( $this->owner->id );
$this->log( sprintf( '%s is deleted', $data['file'] ), 'scan.log' );
return [ 'message' => __( 'This item has been permanently removed.', 'wpdef' ) ];
} elseif ( 'dir' === $data['type'] && $this->delete_dir( $data['file'] ) ) {
$scan->remove_issue( $this->owner->id );
$this->log( sprintf( '%s is deleted', $data['file'] ), 'scan.log' );
return [ 'message' => __( 'This item has been permanently removed.', 'wpdef' ) ];
}
return new WP_Error(
Error_Code::NOT_WRITEABLE,
__( 'Defender doesn\'t have enough permission to remove this file.', 'wpdef' )
);
}
/**
* Return the source code depending on the type of the issue.
*
* @return array
*/
public function pull_src(): array {
$data = $this->owner->raw_data;
if ( ! file_exists( $data['file'] ) && ! is_dir( $data['file'] ) ) {
return [
'code' => '',
'origin' => '',
];
}
switch ( $data['type'] ) {
case 'unversion':
return [ 'code' => file_get_contents( $data['file'] ) ];
case 'dir':
$dir_tree = new File( $data['file'], true, true, [], [], false );
return [ 'code' => implode( PHP_EOL, $dir_tree->get_dir_tree() ) ];
case 'modified':
default:
return [
'code' => file_get_contents( $data['file'] ),
'origin' => $this->get_origin_code(),
];
}
}
/**
* @return string
*/
private function get_short_description(): string {
$data = $this->owner->raw_data;
if ( 'unversion' === $data['type'] ) {
return esc_html__( 'Unknown file in the WordPress plugin', 'wpdef' );
} elseif ( 'dir' === $data['type'] ) {
return esc_html__( 'This directory does not belong to the WordPress plugin', 'wpdef' );
} elseif ( 'modified' === $data['type'] ) {
return esc_html__( 'This plugin file appears modified', 'wpdef' );
}
}
}