369 lines
11 KiB
PHP
Executable File
369 lines
11 KiB
PHP
Executable File
<?php
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require_once 'includes/status_messages.php';
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require_once 'includes/functions.php';
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define('RASPAP_IPTABLES_SCRIPT', "/tmp/iptables_raspap.sh");
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define('RASPAP_IP6TABLES_SCRIPT', "/tmp/ip6tables_raspap.sh");
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/**
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*
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* @param array $rule
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* @param array $conf
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* @return array $don
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*/
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function getDependson(&$rule, &$conf)
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{
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if (isset($rule["dependson"][0]) ) {
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$don = &$rule["dependson"];
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if (!empty($don[0]) && isset($conf[$don[0]["var"]]) ) {
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if (!isset($don[0]["type"]) ) { $don[0]["type"]="bool";
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}
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return $don;
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}
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}
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return false;
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}
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/**
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*
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* @param array $sect
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* @param array $conf
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* @return boolean $active
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*/
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function isRuleEnabled(&$sect, &$conf)
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{
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$fw_on = isset($conf["firewall-enable"]) && $conf["firewall-enable"];
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$active = isset($sect["fw-state"]) && $sect["fw-state"]==1;
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$active = $fw_on ? $active : !$active;
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$active = $active || !isset($sect["fw-state"]);
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if (($don = getDependson($sect, $conf)) !== false
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&& $don[0]["type"] == "bool" && !$conf[$don[0]["var"]]
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) { $active = false;
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}
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return $active;
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}
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/**
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*
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* @param array $sect
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* @param array $conf
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* @return string $str
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*/
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function createRuleStr(&$sect, &$conf)
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{
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if (!is_array($sect["rules"]) ) { return "";
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}
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$rules = $sect["rules"];
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$depon = getDependson($sect, $conf);
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$rs = array();
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foreach ( $rules as $rule ) {
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if (preg_match('/\$[a-z0-9]*\$/i', $rule) ) {
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$r = array($rule);
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foreach ( $depon as $dep ) {
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$rr = array();
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$repl=$val="";
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switch ( $dep["type"] ) {
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case "list":
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if (isset($dep["var"]) && !empty($conf[$dep["var"]]) ) { $val = explode(' ', $conf[$dep["var"]]);
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}
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if (!empty($val) && isset($dep["replace"]) ) { $repl=$dep["replace"];
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}
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break;
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case "string":
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if (isset($dep["var"]) ) { $val=$conf[$dep["var"]];
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}
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if (!empty($val) && isset($dep["replace"]) ) { $repl=$dep["replace"];
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}
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break;
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default:
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break;
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}
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if (!empty($repl) && !empty($val) ) {
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if (is_array($val) ) {
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foreach ( $val as $v ) { $rr = array_merge($rr, str_replace($repl, $v, $r));
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}
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}
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else { $rr = array_merge($rr, str_replace($repl, $val, $r));
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}
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}
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$r = !empty($rr) ? $rr : $r;
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}
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$rs = array_merge($rs, $rr);
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} else {
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$rs[] = $rule;
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}
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}
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$str="";
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foreach ( $rs as $r ) {
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if (!preg_match('/\$[a-z0-9]*\$/i', $r) ) { $str .= '$IPT '.$r."\n";
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}
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}
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return $str;
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}
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/**
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*
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* @param array $rule
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* @return boolean
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*/
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function isIPv4(&$rule)
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{
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return !isset($rule["ip-version"]) || strstr($rule["ip-version"], "4") !== false;
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}
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/**
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*
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* @param array $rule
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* @return boolean
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*/
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function isIPv6(&$rule)
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{
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return !isset($rule["ip-version"]) || strstr($rule["ip-version"], "6") !== false;
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}
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/**
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*
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* @return boolean
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*/
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function configureFirewall()
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{
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$json = file_get_contents(RASPI_IPTABLES_CONF);
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$ipt = json_decode($json, true);
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$conf = ReadFirewallConf();
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$txt = "#!/bin/bash\n";
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file_put_contents(RASPAP_IPTABLES_SCRIPT, $txt);
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file_put_contents(RASPAP_IP6TABLES_SCRIPT, $txt);
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file_put_contents(RASPAP_IPTABLES_SCRIPT, 'IPT="iptables"'."\n", FILE_APPEND);
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file_put_contents(RASPAP_IP6TABLES_SCRIPT, 'IPT="ip6tables"'."\n", FILE_APPEND);
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$txt = "\$IPT -F\n";
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$txt .= "\$IPT -X\n";
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$txt .= "\$IPT -t nat -F\n";
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file_put_contents(RASPAP_IPTABLES_SCRIPT, $txt, FILE_APPEND);
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file_put_contents(RASPAP_IP6TABLES_SCRIPT, $txt, FILE_APPEND);
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if (empty($conf) || empty($ipt) ) { return false;
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}
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$count=0;
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foreach ( $ipt["order"] as $idx ) {
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if (isset($ipt[$idx]) ) {
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foreach ( $ipt[$idx] as $i => $sect ) {
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if (isRuleEnabled($sect, $conf) ) {
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$str_rules= createRuleStr($sect, $conf);
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if (!empty($str_rules) ) {
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if (isIPv4($sect) ) { file_put_contents(RASPAP_IPTABLES_SCRIPT, $str_rules, FILE_APPEND);
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}
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if (isIPv6($sect) ) { file_put_contents(RASPAP_IP6TABLES_SCRIPT, $str_rules, FILE_APPEND);
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}
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++$count;
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}
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}
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}
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}
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}
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if ($count > 0 ) {
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exec("chmod +x ".RASPAP_IPTABLES_SCRIPT);
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exec("sudo ".RASPAP_IPTABLES_SCRIPT);
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exec("sudo iptables-save | sudo tee /etc/iptables/rules.v4");
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unlink(RASPAP_IPTABLES_SCRIPT);
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exec("chmod +x ".RASPAP_IP6TABLES_SCRIPT);
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exec("sudo ".RASPAP_IP6TABLES_SCRIPT);
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exec("sudo ip6tables-save | sudo tee /etc/iptables/rules.v6");
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unlink(RASPAP_IP6TABLES_SCRIPT);
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}
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return ($count > 0);
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}
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/**
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*
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* @param array $conf
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* @return string $ret
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*/
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function WriteFirewallConf($conf)
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{
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$ret = false;
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if (is_array($conf) ) { write_php_ini($conf, RASPI_FIREWALL_CONF);
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}
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return $ret;
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}
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/**
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*
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* @return array $conf
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*/
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function ReadFirewallConf()
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{
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$conf = array();
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if (file_exists(RASPI_FIREWALL_CONF) ) {
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$conf = parse_ini_file(RASPI_FIREWALL_CONF);
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}
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if ( !isset($conf["firewall-enable"]) ) {
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$conf["firewall-enable"] = false;
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$conf["ssh-enable"] = false;
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$conf["http-enable"] = false;
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$conf["excl-devices"] = "";
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$conf["excluded-ips"] = "";
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$conf["ap-device"] = "";
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$conf["client-device"] = "";
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$conf["restricted-ips"] = "";
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}
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exec('ifconfig | grep -E -i "^tun[0-9]"', $ret);
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$conf["openvpn-enable"] = !empty($ret);
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unset($ret);
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exec('ifconfig | grep -E -i "^wg[0-9]"', $ret);
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$conf["wireguard-enable"] = !empty($ret);
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return $conf;
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}
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/**
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*
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* @return string $ips
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*/
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function getVPN_IPs()
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{
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$ips = "";
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// get openvpn and wireguard server IPs
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if (RASPI_OPENVPN_ENABLED && ($fconf = glob(RASPI_OPENVPN_CLIENT_PATH ."/*.conf")) !== false && !empty($fconf) ) {
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foreach ( $fconf as $f ) {
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unset($result);
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exec('cat '.$f.' | sed -rn "s/^remote\s*([a-z0-9\.\-\_:]*)\s*([0-9]*)\s*$/\1 \2/ip" ', $result);
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if (!empty($result) ) {
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$result = explode(" ", $result[0]);
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$ip = (isset($result[0])) ? $result[0] : "";
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$port = (isset($result[1])) ? $result[1] : "";
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if (!empty($ip) ) {
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$ip = gethostbyname($ip);
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if (filter_var($ip, FILTER_VALIDATE_IP) && strpos($ips, $ip) === false ) { $ips .= " $ip";
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}
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}
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}
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}
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}
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// get wireguard server IPs
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if (RASPI_WIREGUARD_ENABLED && ($fconf = glob(RASPI_WIREGUARD_PATH ."/*.conf")) !== false && !empty($fconf) ) {
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foreach ( $fconf as $f ) {
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unset($result);
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exec('sudo /bin/cat '.$f.' | sed -rn "s/^endpoint\s*=\s*\[?([a-z0-9\.\-\_:]*)\]?:([0-9]*)\s*$/\1 \2/ip" ', $result);
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if (!empty($result) ) {
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$result = explode(" ", $result[0]);
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$ip = (isset($result[0])) ? $result[0] : "";
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$port = (isset($result[1])) ? $result[1] : "";
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if (!empty($ip) ) {
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$ip = gethostbyname($ip);
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if (filter_var($ip, FILTER_VALIDATE_IP) && strpos($ips, $ip) === false ) { $ips .= " $ip";
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}
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}
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}
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}
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}
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return trim($ips);
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}
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/**
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*
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* @return array $fw_conf
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*/
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function getFirewallConfiguration()
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{
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$fw_conf = ReadFirewallConf();
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$json = file_get_contents(RASPI_IPTABLES_CONF);
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getWifiInterface();
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$ap_device = $_SESSION['ap_interface'];
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$clients = getClients();
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$str_clients = "";
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foreach( $clients["device"] as $dev ) {
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if (!$dev["isAP"] ) {
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if (!empty($str_clients) ) { $str_clients .= ", ";
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}
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$str_clients .= $dev["name"];
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}
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}
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$fw_conf["ap-device"] = $ap_device;
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$fw_conf["client-list"] = $str_clients;
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$id=findCurrentClientIndex($clients);
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if ($id >= 0 ) { $fw_conf["client-device"] = $clients["device"][$id]["name"];
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}
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return $fw_conf;
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}
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/**
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*
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*/
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function updateFirewall()
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{
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$fw_conf = getFirewallConfiguration();
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if ( isset($fw_conf["firewall-enable"]) ) {
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WriteFirewallConf($fw_conf);
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configureFirewall();
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}
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return;
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}
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/**
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*
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*/
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function DisplayFirewallConfig()
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{
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$status = new StatusMessages();
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$fw_conf = getFirewallConfiguration();
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$ap_device = $fw_conf["ap-device"];
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$str_clients = $fw_conf["client-list"];
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if (!empty($_POST)) {
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$fw_conf["ssh-enable"] = isset($_POST['ssh-enable']);
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$fw_conf["http-enable"] = isset($_POST['http-enable']);
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$fw_conf["firewall-enable"] = isset($_POST['firewall-enable']) || isset($_POST['apply-firewall']);
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if (isset($_POST['firewall-enable']) ) { $status->addMessage(_('Firewall is now enabled'), 'success');
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}
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if (isset($_POST['apply-firewall']) ) { $status->addMessage(_('Firewall settings changed'), 'success');
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}
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if (isset($_POST['firewall-disable']) ) { $status->addMessage(_('Firewall is now disabled'), 'warning');
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}
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if (isset($_POST['save-firewall']) ) { $status->addMessage(_('Firewall settings saved. Firewall is still disabled.'), 'success');
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}
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if (isset($_POST['excl-devices']) ) {
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$excl = filter_var($_POST['excl-devices'], FILTER_SANITIZE_STRING);
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$excl = str_replace(',', ' ', $excl);
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$excl = trim(preg_replace('/\s+/', ' ', $excl));
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if ($fw_conf["excl-devices"] != $excl ) {
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$status->addMessage(_('Exclude devices '. $excl), 'success');
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$fw_conf["excl-devices"] = $excl;
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}
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}
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if (isset($_POST['excluded-ips']) ) {
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$excl = filter_var($_POST['excluded-ips'], FILTER_SANITIZE_STRING);
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$excl = str_replace(',', ' ', $excl);
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$excl = trim(preg_replace('/\s+/', ' ', $excl));
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if (!empty($excl) ) {
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$excl = explode(' ', $excl);
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$str_excl = "";
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foreach ( $excl as $ip ) {
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if (filter_var($ip, FILTER_VALIDATE_IP) ) { $str_excl .= "$ip ";
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} else { $status->addMessage(_('Exclude IP address '. $ip . ' failed - not a valid IP address'), 'warning');
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}
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}
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}
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$str_excl = trim($str_excl);
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if ($fw_conf["excluded-ips"] != $str_excl ) {
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$status->addMessage(_('Exclude IP address(es) '. $str_excl), 'success');
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$fw_conf["excluded-ips"] = $str_excl;
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}
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}
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WriteFirewallConf($fw_conf);
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configureFirewall();
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}
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$vpn_ips = getVPN_IPs();
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echo renderTemplate(
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"firewall", compact(
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"status",
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"ap_device",
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"str_clients",
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"fw_conf",
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"vpn_ips"
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)
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);
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}
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