diff options
Diffstat (limited to 'phpBB/includes/questionnaire/questionnaire.php')
| -rw-r--r-- | phpBB/includes/questionnaire/questionnaire.php | 54 |
1 files changed, 44 insertions, 10 deletions
diff --git a/phpBB/includes/questionnaire/questionnaire.php b/phpBB/includes/questionnaire/questionnaire.php index 659c088763..5f9e5be1fe 100644 --- a/phpBB/includes/questionnaire/questionnaire.php +++ b/phpBB/includes/questionnaire/questionnaire.php @@ -162,25 +162,59 @@ class phpbb_questionnaire_system_data_provider $server_address = $_SERVER['LOCAL_ADDR']; } - $ip_address_ary = explode('.', $server_address); - - // build ip - if (!isset($ip_address_ary[0]) || !isset($ip_address_ary[1])) - { - $ip_address_ary = explode('.', '0.0.0.0'); - } - return array( 'os' => PHP_OS, 'httpd' => $_SERVER['SERVER_SOFTWARE'], // we don't want the real IP address (for privacy policy reasons) but only // a network address to see whether your installation is running on a private or public network. + 'private_ip' => is_private_ip($server_address), + 'ipv6' => strpos($server_address, ':') !== false, + ); + } + + /** + * Checks whether the given IP is in a private network. + * + * @param string $ip IP in v4 dot-decimal or v6 hex format + * @return bool true if the IP is from a private network, else false + */ + function is_private_ip($ip) + { + // IPv4 + if (strpos($ip, ':') === false) + { + $ip_address_ary = explode('.', $ip); + + // build ip + if (!isset($ip_address_ary[0]) || !isset($ip_address_ary[1])) + { + $ip_address_ary = explode('.', '0.0.0.0'); + } + // IANA reserved addresses for private networks (RFC 1918) are: // - 10.0.0.0/8 // - 172.16.0.0/12 // - 192.168.0.0/16 - 'ip' => $ip_address_ary[0] . '.' . $ip_address_ary[1] . '.XXX.YYY', - ); + if ($ip_address_ary[0] == '10' || + ($ip_address_ary[0] == '172' && intval($ip_address_ary[1]) > 15 && intval($ip_address_ary[1]) < 32) || + ($ip_address_ary[0] == '192' && $ip_address_ary[1] == '168') || + ($ip_address_ary[0] == '192' && $ip_address_ary[1] == '168')) + { + return true; + } + } + // IPv6 + else + { + // unique local unicast + $prefix = substr($ip, 0, 2); + if ($prefix == 'fc' || $prefix == 'fd') + { + return true; + } + } + + return false; } } |