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billz 2021-08-05 18:05:31 +01:00
parent cb2e97fdec
commit 99577938f6
1 changed files with 208 additions and 173 deletions
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381
includes/firewall.php
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@ -3,82 +3,99 @@
require_once 'includes/status_messages.php'; require_once 'includes/status_messages.php';
require_once 'includes/functions.php'; require_once 'includes/functions.php';
define('RASPAP_IPTABLES_SCRIPT',"/tmp/iptables_raspap.sh"); define('RASPAP_IPTABLES_SCRIPT', "/tmp/iptables_raspap.sh");
define('RASPAP_IP6TABLES_SCRIPT',"/tmp/ip6tables_raspap.sh"); define('RASPAP_IP6TABLES_SCRIPT', "/tmp/ip6tables_raspap.sh");
function getDependson(&$rule, &$conf) { function getDependson(&$rule, &$conf)
if ( isset($rule["dependson"][0]) ) { {
$don = &$rule["dependson"]; if (isset($rule["dependson"][0]) ) {
if ( !empty($don[0]) && isset($conf[$don[0]["var"]]) ) { $don = &$rule["dependson"];
if ( !isset($don[0]["type"]) ) $don[0]["type"]="bool"; if (!empty($don[0]) && isset($conf[$don[0]["var"]]) ) {
return $don; if (!isset($don[0]["type"]) ) { $don[0]["type"]="bool";
}
}
return false;
}
function isRuleEnabled(&$sect, &$conf) {
$fw_on = isset($conf["firewall-enable"]) && $conf["firewall-enable"];
$active = isset($sect["fw-state"]) && $sect["fw-state"]==1;
$active = $fw_on ? $active : !$active;
$active = $active || !isset($sect["fw-state"]);
if ( ($don = getDependson($sect, $conf)) !== false &&
$don[0]["type"] == "bool" && !$conf[$don[0]["var"]] ) $active = false;
return $active;
}
function createRuleStr(&$sect, &$conf) {
if ( !is_array($sect["rules"]) ) return "";
$rules = $sect["rules"];
$depon = getDependson($sect,$conf);
$rs = array();
foreach ( $rules as $rule ) {
if ( preg_match('/\$[a-z0-9]*\$/i',$rule) ) {
$r = array($rule);
foreach ( $depon as $dep ) {
$rr = array();
$repl=$val="";
switch ( $dep["type"] ) {
case "list":
if ( isset($dep["var"]) && !empty($conf[$dep["var"]]) ) $val = explode(' ', $conf[$dep["var"]]);
if ( !empty($val) && isset($dep["replace"]) ) $repl=$dep["replace"];
break;
case "string":
if ( isset($dep["var"]) ) $val=$conf[$dep["var"]];
if ( !empty($val) && isset($dep["replace"]) ) $repl=$dep["replace"];
break;
default:
break;
} }
if ( !empty($repl) && !empty($val) ) { return $don;
if ( is_array($val) ) { }
foreach ( $val as $v ) $rr = array_merge($rr,str_replace($repl, $v, $r)); }
} return false;
else $rr = array_merge($rr, str_replace($repl, $val, $r)); }
function isRuleEnabled(&$sect, &$conf)
{
$fw_on = isset($conf["firewall-enable"]) && $conf["firewall-enable"];
$active = isset($sect["fw-state"]) && $sect["fw-state"]==1;
$active = $fw_on ? $active : !$active;
$active = $active || !isset($sect["fw-state"]);
if (($don = getDependson($sect, $conf)) !== false
&& $don[0]["type"] == "bool" && !$conf[$don[0]["var"]]
) { $active = false;
}
return $active;
}
function createRuleStr(&$sect, &$conf)
{
if (!is_array($sect["rules"]) ) { return "";
}
$rules = $sect["rules"];
$depon = getDependson($sect, $conf);
$rs = array();
foreach ( $rules as $rule ) {
if (preg_match('/\$[a-z0-9]*\$/i', $rule) ) {
$r = array($rule);
foreach ( $depon as $dep ) {
$rr = array();
$repl=$val="";
switch ( $dep["type"] ) {
case "list":
if (isset($dep["var"]) && !empty($conf[$dep["var"]]) ) { $val = explode(' ', $conf[$dep["var"]]);
}
if (!empty($val) && isset($dep["replace"]) ) { $repl=$dep["replace"];
}
break;
case "string":
if (isset($dep["var"]) ) { $val=$conf[$dep["var"]];
}
if (!empty($val) && isset($dep["replace"]) ) { $repl=$dep["replace"];
}
break;
default:
break;
}
if (!empty($repl) && !empty($val) ) {
if (is_array($val) ) {
foreach ( $val as $v ) { $rr = array_merge($rr, str_replace($repl, $v, $r));
}
}
else { $rr = array_merge($rr, str_replace($repl, $val, $r));
}
}
$r = !empty($rr) ? $rr : $r;
} }
$r = !empty($rr) ? $rr : $r; $rs = array_merge($rs, $rr);
} } else {
$rs = array_merge($rs,$rr); $rs[] = $rule;
} else { }
$rs[] = $rule; }
} $str="";
} foreach ( $rs as $r ) {
$str=""; if (!preg_match('/\$[a-z0-9]*\$/i', $r) ) { $str .= '$IPT '.$r."\n";
foreach ( $rs as $r ) { }
if ( !preg_match('/\$[a-z0-9]*\$/i',$r) ) $str .= '$IPT '.$r."\n"; }
} return $str;
return $str;
} }
function isIPv4(&$rule) { function isIPv4(&$rule)
return !isset($rule["ip-version"]) || strstr($rule["ip-version"],"4") !== false; {
return !isset($rule["ip-version"]) || strstr($rule["ip-version"], "4") !== false;
} }
function isIPv6(&$rule) { function isIPv6(&$rule)
return !isset($rule["ip-version"]) || strstr($rule["ip-version"],"6") !== false; {
return !isset($rule["ip-version"]) || strstr($rule["ip-version"], "6") !== false;
} }
function configureFirewall() { function configureFirewall()
{
$json = file_get_contents(RASPAP_IPTABLES_CONF); $json = file_get_contents(RASPAP_IPTABLES_CONF);
$ipt = json_decode($json, true); $ipt = json_decode($json, true);
$conf = ReadFirewallConf(); $conf = ReadFirewallConf();
@ -92,55 +109,61 @@ function configureFirewall() {
$txt .= "\$IPT -t nat -F\n"; $txt .= "\$IPT -t nat -F\n";
file_put_contents(RASPAP_IPTABLES_SCRIPT, $txt, FILE_APPEND); file_put_contents(RASPAP_IPTABLES_SCRIPT, $txt, FILE_APPEND);
file_put_contents(RASPAP_IP6TABLES_SCRIPT, $txt, FILE_APPEND); file_put_contents(RASPAP_IP6TABLES_SCRIPT, $txt, FILE_APPEND);
if ( empty($conf) || empty($ipt) ) return false; if (empty($conf) || empty($ipt) ) { return false;
}
$count=0; $count=0;
foreach ( $ipt["order"] as $idx ) { foreach ( $ipt["order"] as $idx ) {
if ( isset($ipt[$idx]) ) { if (isset($ipt[$idx]) ) {
foreach ( $ipt[$idx] as $i => $sect ) { foreach ( $ipt[$idx] as $i => $sect ) {
if ( isRuleEnabled($sect, $conf) ) { if (isRuleEnabled($sect, $conf) ) {
$str_rules= createRuleStr($sect, $conf); $str_rules= createRuleStr($sect, $conf);
if ( !empty($str_rules) ) { if (!empty($str_rules) ) {
if ( isIPv4($sect) ) file_put_contents(RASPAP_IPTABLES_SCRIPT, $str_rules, FILE_APPEND); if (isIPv4($sect) ) { file_put_contents(RASPAP_IPTABLES_SCRIPT, $str_rules, FILE_APPEND);
if ( isIPv6($sect) ) file_put_contents(RASPAP_IP6TABLES_SCRIPT, $str_rules, FILE_APPEND); }
++$count; if (isIPv6($sect) ) { file_put_contents(RASPAP_IP6TABLES_SCRIPT, $str_rules, FILE_APPEND);
} }
} ++$count;
} }
} }
}
}
} }
if ( $count > 0 ) { if ($count > 0 ) {
exec("chmod +x ".RASPAP_IPTABLES_SCRIPT); exec("chmod +x ".RASPAP_IPTABLES_SCRIPT);
exec("sudo ".RASPAP_IPTABLES_SCRIPT); exec("sudo ".RASPAP_IPTABLES_SCRIPT);
// exec("sudo iptables-save > /etc/iptables/rules.v4"); // exec("sudo iptables-save > /etc/iptables/rules.v4");
// unlink(RASPAP_IPTABLES_SCRIPT); // unlink(RASPAP_IPTABLES_SCRIPT);
exec("chmod +x ".RASPAP_IP6TABLES_SCRIPT); exec("chmod +x ".RASPAP_IP6TABLES_SCRIPT);
exec("sudo ".RASPAP_IP6TABLES_SCRIPT); exec("sudo ".RASPAP_IP6TABLES_SCRIPT);
// exec("sudo iptables-save > /etc/iptables/rules.v6"); // exec("sudo iptables-save > /etc/iptables/rules.v6");
// unlink(RASPAP_IP6TABLES_SCRIPT); // unlink(RASPAP_IP6TABLES_SCRIPT);
} }
return ($count > 0); return ($count > 0);
} }
function WriteFirewallConf($conf) { function WriteFirewallConf($conf)
{
$ret = false; $ret = false;
if ( is_array($conf) ) write_php_ini($conf,RASPAP_FIREWALL_CONF); if (is_array($conf) ) { write_php_ini($conf, RASPAP_FIREWALL_CONF);
}
return $ret; return $ret;
} }
function ReadFirewallConf() { function ReadFirewallConf()
if ( file_exists(RASPAP_FIREWALL_CONF) ) { {
$conf = parse_ini_file(RASPAP_FIREWALL_CONF); if (file_exists(RASPAP_FIREWALL_CONF) ) {
$conf = parse_ini_file(RASPAP_FIREWALL_CONF);
} else { } else {
$conf = array(); $conf = array();
$conf["firewall-enable"] = false; $conf["firewall-enable"] = false;
$conf["ssh-enable"] = false; $conf["ssh-enable"] = false;
$conf["http-enable"] = false; $conf["http-enable"] = false;
$conf["excl-devices"] = ""; $conf["excl-devices"] = "";
$conf["excluded-ips"] = ""; $conf["excluded-ips"] = "";
$conf["ap-device"] = ""; $conf["ap-device"] = "";
$conf["client-device"] = ""; $conf["client-device"] = "";
$conf["restricted-ips"] = ""; $conf["restricted-ips"] = "";
} }
exec('ifconfig | grep -E -i "^tun[0-9]"', $ret); exec('ifconfig | grep -E -i "^tun[0-9]"', $ret);
$conf["openvpn-enable"] = !empty($ret); $conf["openvpn-enable"] = !empty($ret);
@ -150,39 +173,42 @@ function ReadFirewallConf() {
return $conf; return $conf;
} }
function getVPN_IPs() { function getVPN_IPs()
{
$ips = ""; $ips = "";
# get openvpn and wireguard server IPs // get openvpn and wireguard server IPs
if ( RASPI_OPENVPN_ENABLED && ($fconf = glob(RASPI_OPENVPN_CLIENT_PATH ."/*.conf")) !== false && !empty($fconf) ) { if (RASPI_OPENVPN_ENABLED && ($fconf = glob(RASPI_OPENVPN_CLIENT_PATH ."/*.conf")) !== false && !empty($fconf) ) {
foreach ( $fconf as $f ) { foreach ( $fconf as $f ) {
unset($result); unset($result);
exec('cat '.$f.' | sed -rn "s/^remote\s*([a-z0-9\.\-\_:]*)\s*([0-9]*)\s*$/\1 \2/ip" ', $result); exec('cat '.$f.' | sed -rn "s/^remote\s*([a-z0-9\.\-\_:]*)\s*([0-9]*)\s*$/\1 \2/ip" ', $result);
if ( !empty($result) ) { if (!empty($result) ) {
$result = explode(" ",$result[0]); $result = explode(" ", $result[0]);
$ip = (isset($result[0])) ? $result[0] : ""; $ip = (isset($result[0])) ? $result[0] : "";
$port = (isset($result[1])) ? $result[1] : ""; $port = (isset($result[1])) ? $result[1] : "";
if ( !empty($ip) ) { if (!empty($ip) ) {
$ip = gethostbyname($ip); $ip = gethostbyname($ip);
if ( filter_var($ip,FILTER_VALIDATE_IP) && strpos($ips, $ip) === false ) $ips .= " $ip"; if (filter_var($ip, FILTER_VALIDATE_IP) && strpos($ips, $ip) === false ) { $ips .= " $ip";
} }
}
}
} }
}
} }
# get wireguard server IPs // get wireguard server IPs
if ( RASPI_WIREGUARD_ENABLED && ($fconf = glob(RASPI_WIREGUARD_PATH ."/*.conf")) !== false && !empty($fconf) ) { if (RASPI_WIREGUARD_ENABLED && ($fconf = glob(RASPI_WIREGUARD_PATH ."/*.conf")) !== false && !empty($fconf) ) {
foreach ( $fconf as $f ) { foreach ( $fconf as $f ) {
unset($result); unset($result);
exec('sudo /bin/cat '.$f.' | sed -rn "s/^endpoint\s*=\s*\[?([a-z0-9\.\-\_:]*)\]?:([0-9]*)\s*$/\1 \2/ip" ', $result); exec('sudo /bin/cat '.$f.' | sed -rn "s/^endpoint\s*=\s*\[?([a-z0-9\.\-\_:]*)\]?:([0-9]*)\s*$/\1 \2/ip" ', $result);
if ( !empty($result) ) { if (!empty($result) ) {
$result = explode(" ",$result[0]); $result = explode(" ", $result[0]);
$ip = (isset($result[0])) ? $result[0] : ""; $ip = (isset($result[0])) ? $result[0] : "";
$port = (isset($result[1])) ? $result[1] : ""; $port = (isset($result[1])) ? $result[1] : "";
if ( !empty($ip) ) { if (!empty($ip) ) {
$ip = gethostbyname($ip); $ip = gethostbyname($ip);
if ( filter_var($ip,FILTER_VALIDATE_IP) && strpos($ips, $ip) === false ) $ips .= " $ip"; if (filter_var($ip, FILTER_VALIDATE_IP) && strpos($ips, $ip) === false ) { $ips .= " $ip";
} }
}
}
} }
}
} }
return trim($ips); return trim($ips);
} }
@ -200,60 +226,69 @@ function DisplayFirewallConfig()
$clients = getClients(); $clients = getClients();
$str_clients = ""; $str_clients = "";
foreach( $clients["device"] as $dev ) { foreach( $clients["device"] as $dev ) {
if ( !$dev["isAP"] ) { if (!$dev["isAP"] ) {
if ( !empty($str_clients) ) $str_clients .= ", "; if (!empty($str_clients) ) { $str_clients .= ", ";
$str_clients .= $dev["name"]; }
} $str_clients .= $dev["name"];
}
} }
$fw_conf = ReadFirewallConf(); $fw_conf = ReadFirewallConf();
$fw_conf["ap-device"] = $ap_device; $fw_conf["ap-device"] = $ap_device;
$id=findCurrentClientIndex($clients); $id=findCurrentClientIndex($clients);
if ( $id >= 0 ) $fw_conf["client-device"] = $clients["device"][$id]["name"]; if ($id >= 0 ) { $fw_conf["client-device"] = $clients["device"][$id]["name"];
}
if (!empty($_POST)) { if (!empty($_POST)) {
$fw_conf["ssh-enable"] = isset($_POST['ssh-enable']); $fw_conf["ssh-enable"] = isset($_POST['ssh-enable']);
$fw_conf["http-enable"] = isset($_POST['http-enable']); $fw_conf["http-enable"] = isset($_POST['http-enable']);
$fw_conf["firewall-enable"] = isset($_POST['firewall-enable']) || isset($_POST['apply-firewall']); $fw_conf["firewall-enable"] = isset($_POST['firewall-enable']) || isset($_POST['apply-firewall']);
if ( isset($_POST['firewall-enable']) ) $status->addMessage(_('Firewall is now enabled'), 'success'); if (isset($_POST['firewall-enable']) ) { $status->addMessage(_('Firewall is now enabled'), 'success');
if ( isset($_POST['apply-firewall']) ) $status->addMessage(_('Firewall settings changed'), 'success');
if ( isset($_POST['firewall-disable']) ) $status->addMessage(_('Firewall is now disabled'), 'warning');
if ( isset($_POST['save-firewall']) ) $status->addMessage(_('Firewall settings saved. Firewall is still disabled.'), 'success');
if ( isset($_POST['excl-devices']) ) {
$excl = filter_var($_POST['excl-devices'], FILTER_SANITIZE_STRING);
$excl = str_replace(',', ' ', $excl);
$excl = trim(preg_replace('/\s+/', ' ', $excl));
if ( $fw_conf["excl-devices"] != $excl ) {
$status->addMessage(_('Exclude devices '. $excl), 'success');
$fw_conf["excl-devices"] = $excl;
}
} }
if ( isset($_POST['excluded-ips']) ) { if (isset($_POST['apply-firewall']) ) { $status->addMessage(_('Firewall settings changed'), 'success');
$excl = filter_var($_POST['excluded-ips'], FILTER_SANITIZE_STRING); }
$excl = str_replace(',', ' ', $excl); if (isset($_POST['firewall-disable']) ) { $status->addMessage(_('Firewall is now disabled'), 'warning');
$excl = trim(preg_replace('/\s+/', ' ', $excl)); }
if ( !empty($excl) ) { if (isset($_POST['save-firewall']) ) { $status->addMessage(_('Firewall settings saved. Firewall is still disabled.'), 'success');
$excl = explode(' ',$excl); }
$str_excl = ""; if (isset($_POST['excl-devices']) ) {
foreach ( $excl as $ip ) { $excl = filter_var($_POST['excl-devices'], FILTER_SANITIZE_STRING);
if ( filter_var($ip,FILTER_VALIDATE_IP) ) $str_excl .= "$ip "; $excl = str_replace(',', ' ', $excl);
else $status->addMessage(_('Exclude IP address '. $ip . ' failed - not a valid IP address'), 'warning'); $excl = trim(preg_replace('/\s+/', ' ', $excl));
} if ($fw_conf["excl-devices"] != $excl ) {
} $status->addMessage(_('Exclude devices '. $excl), 'success');
$str_excl = trim($str_excl); $fw_conf["excl-devices"] = $excl;
if ( $fw_conf["excluded-ips"] != $str_excl ) { }
$status->addMessage(_('Exclude IP address(es) '. $str_excl ), 'success'); }
$fw_conf["excluded-ips"] = $str_excl; if (isset($_POST['excluded-ips']) ) {
} $excl = filter_var($_POST['excluded-ips'], FILTER_SANITIZE_STRING);
$excl = str_replace(',', ' ', $excl);
$excl = trim(preg_replace('/\s+/', ' ', $excl));
if (!empty($excl) ) {
$excl = explode(' ', $excl);
$str_excl = "";
foreach ( $excl as $ip ) {
if (filter_var($ip, FILTER_VALIDATE_IP) ) { $str_excl .= "$ip ";
} else { $status->addMessage(_('Exclude IP address '. $ip . ' failed - not a valid IP address'), 'warning');
}
}
}
$str_excl = trim($str_excl);
if ($fw_conf["excluded-ips"] != $str_excl ) {
$status->addMessage(_('Exclude IP address(es) '. $str_excl), 'success');
$fw_conf["excluded-ips"] = $str_excl;
}
} }
WriteFirewallConf($fw_conf); WriteFirewallConf($fw_conf);
configureFirewall(); configureFirewall();
} }
$vpn_ips = getVPN_IPs(); $vpn_ips = getVPN_IPs();
echo renderTemplate("firewall", compact( echo renderTemplate(
"status", "firewall", compact(
"ap_device", "status",
"str_clients", "ap_device",
"fw_conf", "str_clients",
"ipt_rules", "fw_conf",
"vpn_ips") "ipt_rules",
"vpn_ips"
)
); );
} }