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<?php
namespace WP_Rocket\Logger;
use UnexpectedValueException;
use WP_Rocket\Dependencies\Monolog\Handler\StreamHandler as MonoStreamHandler;
/**
* Class used to log records into a local file.
*
* @since 3.2
*/
class StreamHandler extends MonoStreamHandler {
/**
* Tell if the .htaccess file exists.
*
* @var bool
*
* @since 3.2
*/
private $htaccess_exists;
/**
* Tell if there is an error.
*
* @var bool
*
* @since 3.2
*/
private $has_error;
/**
* Contains an error message.
*
* @var string
*
* @since 3.2
*/
private $error_message;
/**
* Writes the record down to the log of the implementing handler.
*
* @since 3.2
*
* @param array $record Log contents.
*
* @return void
*/
protected function write( array $record ): void {
parent::write( $record );
$this->create_htaccess_file();
}
/**
* Create a .htaccess file in the log folder, to prevent direct access and directory listing.
*
* @since 3.2
*
* @throws \UnexpectedValueException When the .htaccess file could not be created.
*
* @return bool True if the file exists or has been created. False on failure.
*/
public function create_htaccess_file() {
if ( $this->htaccess_exists ) {
return true;
}
if ( $this->has_error ) {
return false;
}
$dir = $this->get_dir_from_stream( $this->url );
if ( ! $dir || ! is_dir( $dir ) ) {
$this->has_error = true;
return false;
}
$file_path = $dir . '/.htaccess';
if ( file_exists( $file_path ) ) {
$this->htaccess_exists = true;
return true;
}
$this->error_message = null;
set_error_handler( [ $this, 'custom_error_handler' ] ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_set_error_handler
$file_resource = fopen( $file_path, 'a' ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_read_fopen
restore_error_handler();
if ( ! is_resource( $file_resource ) ) {
$this->has_error = true;
throw new UnexpectedValueException( sprintf( 'The file "%s" could not be opened: ' . $this->error_message, $file_path ) );
}
$new_content = "<Files ~ \"\.log$\">\nOrder allow,deny\nDeny from all\n</Files>\nOptions -Indexes";
fwrite( $file_resource, $new_content ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_read_fwrite
fclose( $file_resource ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_read_fclose
@chmod( $file_path, 0644 ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
$this->htaccess_exists = true;
return true;
}
/**
* Temporary error handler that "cleans" the error messages.
*
* @since 3.2
*
* @see parent::customErrorHandler()
*
* @param int $code Error code.
* @param string $msg Error message.
*/
private function custom_error_handler( int $code, string $msg ) {
$this->error_message = preg_replace( '{^(fopen|mkdir)\(.*?\): }', '', $msg );
}
/**
* A dirname() that also works for streams, by removing the protocol.
*
* @since 3.2
*
* @see parent::getDirFromStream()
*
* @param string $stream Path to a file.
*
* @return null|string
*/
private function get_dir_from_stream( string $stream ) {
$pos = strpos( $stream, '://' );
if ( false === $pos ) {
return dirname( $stream );
}
if ( 'file://' === substr( $stream, 0, 7 ) ) {
return dirname( substr( $stream, 7 ) );
}
}
}