| 1: | <?php |
| 2: | |
| 3: | /** |
| 4: | * Validates tel (for phone numbers). |
| 5: | * |
| 6: | * The relevant specifications for this protocol are RFC 3966 and RFC 5341, |
| 7: | * but this class takes a much simpler approach: we normalize phone |
| 8: | * numbers so that they only include (possibly) a leading plus, |
| 9: | * and then any number of digits and x'es. |
| 10: | */ |
| 11: | |
| 12: | class HTMLPurifier_URIScheme_tel extends HTMLPurifier_URIScheme |
| 13: | { |
| 14: | /** |
| 15: | * @type bool |
| 16: | */ |
| 17: | public $browsable = false; |
| 18: | |
| 19: | /** |
| 20: | * @type bool |
| 21: | */ |
| 22: | public $may_omit_host = true; |
| 23: | |
| 24: | /** |
| 25: | * @param HTMLPurifier_URI $uri |
| 26: | * @param HTMLPurifier_Config $config |
| 27: | * @param HTMLPurifier_Context $context |
| 28: | * @return bool |
| 29: | */ |
| 30: | public function doValidate(&$uri, $config, $context) |
| 31: | { |
| 32: | $uri->userinfo = null; |
| 33: | $uri->host = null; |
| 34: | $uri->port = null; |
| 35: | |
| 36: | // Delete all non-numeric characters, non-x characters |
| 37: | // from phone number, EXCEPT for a leading plus sign. |
| 38: | $uri->path = preg_replace('/(?!^\+)[^\dx]/', '', |
| 39: | // Normalize e(x)tension to lower-case |
| 40: | str_replace('X', 'x', $uri->path)); |
| 41: | |
| 42: | return true; |
| 43: | } |
| 44: | } |
| 45: | |
| 46: | // vim: et sw=4 sts=4 |
| 47: |