Improved email address validation with IPv6 support
| | |
| | | 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 |
| | |
| | | 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 |
| | | * |
| | |
| | | atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+', |
| | | quoted_pair = '\\x5c[\\x00-\\x7f]', |
| | | quoted_string = '\\x22('+qtext+'|'+quoted_pair+')*\\x22', |
| | | ip_addr = '\\[*(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}\\]*', |
| | | ipv4 = '\\[(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}\\]', |
| | | ipv6 = '\\[IPv6:[0-9a-f:.]+\\]', |
| | | ip_addr = '(' + ipv4 + ')|(' + ipv6 + ')', |
| | | // Use simplified domain matching, because we need to allow Unicode characters here |
| | | // So, e-mail address should be validated also on server side after idn_to_ascii() use |
| | | //domain_literal = '\\x5b('+dtext+'|'+quoted_pair+')*\\x5d', |
| | |
| | | array('firstname.lastname@domain.com', 'Email contains dot in the address field'), |
| | | array('email@subdomain.domain.com', 'Email contains dot with subdomain'), |
| | | array('firstname+lastname@domain.com', 'Plus sign is considered valid character'), |
| | | array('email@123.123.123.123', 'Domain is valid IP address'), |
| | | array('email@[123.123.123.123]', 'Square bracket around IP address is considered valid'), |
| | | array('email@[123.123.123.123]', 'Square bracket around IP address'), |
| | | array('email@[IPv6:::1]', 'Square bracket around IPv6 address (1)'), |
| | | array('email@[IPv6:::1.2.3.4]', 'Square bracket around IPv6 address (2)'), |
| | | array('email@[IPv6:2001:2d12:c4fe:5afe::1]', 'Square bracket around IPv6 address (3)'), |
| | | array('"email"@domain.com', 'Quotes around email is considered valid'), |
| | | array('1234567890@domain.com', 'Digits in address are valid'), |
| | | array('email@domain-one.com', 'Dash in domain name is valid'), |
| | |
| | | array('email@domain', 'Missing top level domain (.com/.net/.org/etc)'), |
| | | array('email@-domain.com', 'Leading dash in front of domain is invalid'), |
| | | // array('email@domain.web', '.web is not a valid top level domain'), |
| | | array('email@111.222.333.44444', 'Invalid IP format'), |
| | | array('email@123.123.123.123', 'IP address without brackets'), |
| | | array('email@2001:2d12:c4fe:5afe::1', 'IPv6 address without brackets'), |
| | | array('email@IPv6:2001:2d12:c4fe:5afe::1', 'IPv6 address without brackets (2)'), |
| | | array('email@[111.222.333.44444]', 'Invalid IP format'), |
| | | array('email@[111.222.255.257]', 'Invalid IP format (2)'), |
| | | array('email@[.222.255.257]', 'Invalid IP format (3)'), |
| | | array('email@[::1]', 'Invalid IPv6 format (1)'), |
| | | array('email@[IPv6:2001:23x2:1]', 'Invalid IPv6 format (2)'), |
| | | array('email@[IPv6:1111:2222:33333::4444:5555]', 'Invalid IPv6 format (3)'), |
| | | array('email@[IPv6:1111::3333::4444:5555]', 'Invalid IPv6 format (4)'), |
| | | array('email@domain..com', 'Multiple dot in the domain portion is invalid'), |
| | | ); |
| | | } |