diff options
Diffstat (limited to 'inc/functions.php')
| -rw-r--r-- | inc/functions.php | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/inc/functions.php b/inc/functions.php index dd91fe62..cc12ce78 100644 --- a/inc/functions.php +++ b/inc/functions.php @@ -991,34 +991,31 @@ ))); } - function isDNSBL() { - $dns_black_lists = file('./dnsbl.txt', FILE_IGNORE_NEW_LINES); + function checkDNSBL() { + global $config; - // Reverse the IP - $rev_ip = implode(array_reverse(explode('.', $_SERVER['REMOTE_ADDR'])), '.'); - $response = array(); - foreach ($dns_black_lists as $dns_black_list) { - $response = (gethostbynamel($rev_ip . '.' . $dns_black_list)); - if(!empty($response)) - return true; - } + if(isIPv6()) + return; // No IPv6 support yet. - return false; + if(!isset($_SERVER['REMOTE_ADDR'])) + return; // Fix your web server configuration + + // Reverse IP + $ip = ReverseIPOctets($_SERVER['REMOTE_ADDR']); + + foreach($config['dnsbl'] as &$blacklist) { + $lookup = $ip . '.' . $blacklist; + if(gethostbyname($lookup) != $lookup) { + // On NXDOMAIN (meaning it's not in the blacklist), gethostbyname() returns the host unchanged. + error(sprintf($config['error']['dnsbl'], $blacklist)); + } + } } function isIPv6() { return strstr($_SERVER['REMOTE_ADDR'], ':') !== false; } - function isTor() { - if(isIPv6()) - return false; // Tor does not support IPv6 - - return gethostbyname( - ReverseIPOctets($_SERVER['REMOTE_ADDR']) . '.' . $_SERVER['SERVER_PORT'] . '.' . ReverseIPOctets($_SERVER['SERVER_ADDR']) . '.ip-port.exitlist.torproject.org' - ) == '127.0.0.2'; - } - function ReverseIPOctets($ip) { $ipoc = explode('.', $ip); return $ipoc[3] . '.' . $ipoc[2] . '.' . $ipoc[1] . '.' . $ipoc[0]; |