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ðŸ“„ RoutingApp.php(37.28 KB)
ðŸ“„ Sanitization.php(659 B)
ðŸ“„ Security.php(1.65 KB)
ðŸ“„ Serializable.php(2.23 KB)
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Editing: Serializable.php

<?php

namespace Imagely\NGG\Util;

class Serializable {

/**
	 * Serializes the data
	 *
	 * @param mixed $value
	 * @return string
	 */
	public static function serialize( $value ) {
		// Try encoding using JSON. It's usually Unicode safe but still, sometimes trips over things.
		$serialized = @\json_encode( $value );

if ( ! $serialized ) {
			$serialized = \preg_replace( '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x9F]/u', '', $value );
			$serialized = @\json_encode( $serialized );
		}

// Using json_encode here because PHP's serialize is not Unicode safe.
		return \base64_encode( $serialized );
	}

/**
	 * Unserializes data using our proprietary format
	 *
	 * @throws \Exception This method will not unserialize any objects
	 * @param string $value
	 * @return mixed
	 */
	public static function unserialize( $value ) {
		$retval = null;
		if ( \is_string( $value ) ) {
			$retval = \stripcslashes( $value );

if ( \strlen( $value ) > 1 ) {
				// We can't always rely on base64_decode() or json_decode() to return FALSE as their documentation
				// claims so check if $retval begins with a: as that indicates we have a serialized PHP object.
				if ( \strpos( $retval, 'a:' ) === 0 ) {
					if ( self::check_for_serialized_objects( $value ) ) {
						throw new \Exception( \__( 'NextGEN Gallery will not unserialize data with objects', 'nggallery' ) );
					}

// Record this for later.
					$er = \error_reporting( 0 );

// The second parameter was added by PHP 7.0.
					if ( \version_compare( \phpversion(), '7.0', '>=' ) ) {
						$retval = \unserialize( $value, [ 'allowed_classes' => false ] );
					} else {
						$retval = \unserialize( $value );
					}

// Restore error reporting level.
					\error_reporting( $er );
				} else {
					// We use json_decode() here because PHP's unserialize() is not Unicode safe.
					$retval = \json_decode( \base64_decode( $retval ), true );
				}
			}
		}

return $retval;
	}

/**
	 * Determines if a string may hold a serialized PHP object
	 *
	 * @param $string
	 * @return bool
	 */
	public static function check_for_serialized_objects( $string ) {
		if ( ! \is_string( $string ) ) {
			return false;
		}
		$string = \trim( $string );
		return (bool) \preg_match( '/(O|C):\+?[0-9]+:/is', $string );
	}
}

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