PHP Class Airship\Engine\Security\Util

Contains various utilities that may be useful in developing Airship cabins.

Public Methods

Method	Description
charWhitelist ( string $input, string $whitelist = self::PRINTABLE_ASCII ) : string	Only allow characters present in the whitelist string to pass through the filter.
downloadFileType ( string $mimeType, string $default = 'text/plain', array $badSubstrings = self::DEFAULT_MIME_BLOCK ) : string
noHTML ( string $untrusted ) : string	Don't allow any HTML tags or attributes to be inserted into the DOM.
randomString ( integer $length = 64, string $characters = self::PRINTABLE_ASCII ) : string	Generate a random string of a given length and character set
stringLength ( string $str ) : integer	Binary-safe strlen() implementation
subString ( string $str, integer $start, integer \| null $length = null ) : string	Binary-safe substr() implementation

Only allow characters present in the whitelist string to pass through the filter.

public static charWhitelist ( string $input, string $whitelist = self::PRINTABLE_ASCII ) : string
$input	string
$whitelist	string
return	string

public static downloadFileType ( string $mimeType, string $default = 'text/plain', array $badSubstrings = self::DEFAULT_MIME_BLOCK ) : string
$mimeType	string
$default	string
$badSubstrings	array
return	string

Prevents XSS attacks.

public static noHTML ( string $untrusted ) : string
$untrusted	string
return	string

Generate a random string of a given length and character set

public static randomString ( integer $length = 64, string $characters = self::PRINTABLE_ASCII ) : string
$length	integer	How many characters do you want?
$characters	string	Which characters to choose from
return	string

Binary-safe strlen() implementation

public static stringLength ( string $str ) : integer
$str	string
return	integer

Binary-safe substr() implementation

public static subString ( string $str, integer $start, integer \| null $length = null ) : string
$str	string
$start	integer
$length	integer \| null
return	string