| | |
| | | */ |
| | | public static function check_ip($ip) |
| | | { |
| | | // IPv6, but there's no build-in IPv6 support |
| | | if (strpos($ip, ':') !== false && !defined('AF_INET6')) { |
| | | $parts = explode(':', $ip); |
| | | $count = count($parts); |
| | | |
| | | if ($count > 8 || $count < 2) { |
| | | return false; |
| | | } |
| | | |
| | | foreach ($parts as $idx => $part) { |
| | | $length = strlen($part); |
| | | if (!$length) { |
| | | // there can be only one :: |
| | | if ($found_empty) { |
| | | return false; |
| | | } |
| | | $found_empty = true; |
| | | } |
| | | // last part can be an IPv4 address |
| | | else if ($idx == $count - 1) { |
| | | if (!preg_match('/^[0-9a-f]{1,4}$/i', $part)) { |
| | | return @inet_pton($part) !== false; |
| | | } |
| | | } |
| | | else if (!preg_match('/^[0-9a-f]{1,4}$/i', $part)) { |
| | | return false; |
| | | } |
| | | } |
| | | |
| | | return true; |
| | | } |
| | | |
| | | return @inet_pton($ip) !== false; |
| | | return filter_var($ip, FILTER_VALIDATE_IP) !== false; |
| | | } |
| | | |
| | | /** |
| | |
| | | $js_rep_table["'"] = "\\'"; |
| | | $js_rep_table["\\"] = "\\\\"; |
| | | // Unicode line and paragraph separators (#1486310) |
| | | $js_rep_table[chr(hexdec(E2)).chr(hexdec(80)).chr(hexdec(A8))] = '
'; |
| | | $js_rep_table[chr(hexdec(E2)).chr(hexdec(80)).chr(hexdec(A9))] = '
'; |
| | | $js_rep_table[chr(hexdec('E2')).chr(hexdec('80')).chr(hexdec('A8'))] = '
'; |
| | | $js_rep_table[chr(hexdec('E2')).chr(hexdec('80')).chr(hexdec('A9'))] = '
'; |
| | | } |
| | | |
| | | // encode for javascript use |
| | |
| | | /** |
| | | * Generate a ramdom string |
| | | * |
| | | * @param int String length |
| | | * @param int $length String length |
| | | * @param bool $raw Return RAW data instead of hex |
| | | * |
| | | * @return string The generated random string |
| | | */ |
| | | public static function random_bytes($length) |
| | | public static function random_bytes($length, $raw = false) |
| | | { |
| | | if (function_exists('openssl_random_pseudo_bytes')) { |
| | | $random = openssl_random_pseudo_bytes(ceil($length / 2)); |
| | | $random = bin2hex($random); |
| | | $rlen = $raw ? $length : ceil($length / 2); |
| | | $random = openssl_random_pseudo_bytes($rlen); |
| | | |
| | | // if the length wasn't even... |
| | | if ($length < strlen($random)) { |
| | | $random = substr($random, 0, $length); |
| | | } |
| | | if ($raw) { |
| | | return $random; |
| | | } |
| | | else { |
| | | $alpha = 'ABCDEFGHIJKLMNOPQERSTUVXYZabcdefghijklmnopqrtsuvwxyz0123456789+*%&?!$-_='; |
| | | $random = ''; |
| | | |
| | | for ($i = 0; $i < $length; $i++) { |
| | | $random .= $alpha[rand(0, strlen($alpha)-1)]; |
| | | } |
| | | $random = bin2hex($random); |
| | | |
| | | // if the length wasn't even... |
| | | if ($length < strlen($random)) { |
| | | $random = substr($random, 0, $length); |
| | | } |
| | | |
| | | return $random; |