diff options
Diffstat (limited to 'program/include/rcube_utils.php')
| -rw-r--r-- | program/include/rcube_utils.php | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/program/include/rcube_utils.php b/program/include/rcube_utils.php index 9f18b79c4..defb2aed1 100644 --- a/program/include/rcube_utils.php +++ b/program/include/rcube_utils.php @@ -92,9 +92,9 @@ class rcube_utils return false; } - // Check domain part - if (preg_match('/^\[*(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}\]*$/', $domain_part)) { - return true; // IP address + // Validate domain part + if (preg_match('/^\[((IPv6:[0-9a-f:.]+)|([0-9.]+))\]$/i', $domain_part, $matches)) { + return self::ip_check(preg_replace('/^IPv6:/i', '', $matches[1])); // valid IPv4 or IPv6 address } else { // If not an IP address @@ -146,6 +146,52 @@ class rcube_utils return false; } + + /** + * Validates IPv4 or IPv6 address + * + * @param string $ip IP address in v4 or v6 format + * + * @return bool True if the address is valid + */ + public static function ip_check($ip) + { + // IPv6, but there's no build-in IPv6 support + if (strpos($ip, ':') !== false && !defined('AF_INET6')) { + $parts = explode(':', $domain_part); + $count = count($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; + } + + /** * Check whether the HTTP referer matches the current request * |