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functions.php: remove checkDNSBL and DNS functions

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This commit is contained in:
Zankaria 2025-04-24 00:59:29 +02:00
parent 4c29e84527
commit 08a5e0d3bf
1 changed files with 0 additions and 109 deletions
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109
inc/functions.php
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@ -1767,61 +1767,6 @@ function buildJavascript() {
file_write($config['file_script'], $script);
}
function checkDNSBL() {
global $config;
if (isIPv6())
return; // No IPv6 support yet.
if (!isset($_SERVER['REMOTE_ADDR']))
return; // Fix your web server configuration
if (preg_match("/^(::(ffff:)?)?(127\.|192\.168\.|10\.|172\.(1[6-9]|2[0-9]|3[0-1])\.|0\.|255\.)/", $_SERVER['REMOTE_ADDR']))
return; // It's pointless to check for local IP addresses in dnsbls, isn't it?
if (in_array($_SERVER['REMOTE_ADDR'], $config['dnsbl_exceptions']))
return;
$ipaddr = ReverseIPOctets($_SERVER['REMOTE_ADDR']);
foreach ($config['dnsbl'] as $blacklist) {
if (!is_array($blacklist))
$blacklist = array($blacklist);
if (($lookup = str_replace('%', $ipaddr, $blacklist[0])) == $blacklist[0])
$lookup = $ipaddr . '.' . $blacklist[0];
if (!$ip = DNS($lookup))
continue; // not in list
$blacklist_name = isset($blacklist[2]) ? $blacklist[2] : $blacklist[0];
if (!isset($blacklist[1])) {
// If you're listed at all, you're blocked.
error(sprintf($config['error']['dnsbl'], $blacklist_name));
} elseif (is_array($blacklist[1])) {
foreach ($blacklist[1] as $octet) {
if ($ip == $octet || $ip == '127.0.0.' . $octet)
error(sprintf($config['error']['dnsbl'], $blacklist_name));
}
} elseif (is_callable($blacklist[1])) {
if ($blacklist[1]($ip))
error(sprintf($config['error']['dnsbl'], $blacklist_name));
} else {
if ($ip == $blacklist[1] || $ip == '127.0.0.' . $blacklist[1])
error(sprintf($config['error']['dnsbl'], $blacklist_name));
}
}
}
function isIPv6() {
return strstr($_SERVER['REMOTE_ADDR'], ':') !== false;
}
function ReverseIPOctets($ip) {
return implode('.', array_reverse(explode('.', $ip)));
}
function wordfilters(&$body) {
global $config;
@ -2512,60 +2457,6 @@ function undoImage(array $post) {
}
}
function rDNS($ip_addr) {
global $config;
if ($config['cache']['enabled'] && ($host = cache::get('rdns_' . $ip_addr))) {
return $host;
}
if (!$config['dns_system']) {
$host = gethostbyaddr($ip_addr);
} else {
$resp = shell_exec_error('host -W 3 ' . $ip_addr);
if (preg_match('/domain name pointer ([^\s]+)$/', $resp, $m))
$host = $m[1];
else
$host = $ip_addr;
}
$isip = filter_var($host, FILTER_VALIDATE_IP);
if ($config['fcrdns'] && !$isip && DNS($host) != $ip_addr) {
$host = $ip_addr;
}
if ($config['cache']['enabled'])
cache::set('rdns_' . $ip_addr, $host);
return $host;
}
function DNS($host) {
global $config;
if ($config['cache']['enabled'] && ($ip_addr = cache::get('dns_' . $host))) {
return $ip_addr != '?' ? $ip_addr : false;
}
if (!$config['dns_system']) {
$ip_addr = gethostbyname($host);
if ($ip_addr == $host)
$ip_addr = false;
} else {
$resp = shell_exec_error('host -W 1 ' . $host);
if (preg_match('/has address ([^\s]+)$/', $resp, $m))
$ip_addr = $m[1];
else
$ip_addr = false;
}
if ($config['cache']['enabled'])
cache::set('dns_' . $host, $ip_addr !== false ? $ip_addr : '?');
return $ip_addr;
}
function shell_exec_error($command, $suppress_stdout = false) {
global $config, $debug;