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Find and use the firewall path 

Needed as Debian 8 and 9 have a different iptables location than Debian 11
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FusionPBX 2023-08-23 15:29:04 -06:00 committed by GitHub
parent 9a19fb4f82
commit dcd00c3a15
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1 changed files with 49 additions and 25 deletions
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74
app/event_guard/resources/service/event_guard.php
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@ -65,14 +65,31 @@
//define the firewall command
if ($php_os == 'freebsd') {
$firewall = 'pf';
$firewall_name = 'pf';
if (file_exists('/sbin/pfctl')) {
$firewall_path = '/sbin/pfctl';
}
}
if ($php_os == 'linux') {
$firewall = 'iptables';
$firewall_name = 'iptables';
//find the firewall path
if (file_exists('/usr/sbin/iptables')) {
$firewall_path = '/usr/sbin';
}
if (empty($firewall_path) && file_exists('/sbin/iptables')) {
$firewall_path = '/sbin';
}
}
//check if the firewall command was found
if (empty($firewall_path)) {
echo $firewall_name." command not found\n";
exit;
}
//add the iptables chains
if ($firewall == 'iptables') {
if ($firewall_name == 'iptables') {
//create a chain array
$chains[] = 'sip-auth-ip';
$chains[] = 'sip-auth-fail';
@ -298,8 +315,8 @@
//block an ip address
function block($ip_address, $filter, $event) {
//set global variables
global $firewall;
//define the global variables
global $firewall_path, $firewall_name;
//invalid ip address
if (!filter_var($ip_address, FILTER_VALIDATE_IP)) {
@ -307,16 +324,16 @@
}
//run the block command for iptables
if ($firewall == 'iptables') {
if ($firewall_name == 'iptables') {
//example: iptables -I INPUT -s 127.0.0.1 -j DROP
$command = '/usr/sbin/./iptables -I '.$filter.' -s '.$ip_address.' -j DROP';
$command = $firewall_path.'/./iptables -I '.$filter.' -s '.$ip_address.' -j DROP';
$result = shell($command);
}
//run the block command for pf
if ($firewall == 'pf') {
if ($firewall_name == 'pf') {
//example: pfctl -t sip-auth-ip -T add 127.0.0.5/32
$command = '/sbin/pfctl -t '.$filter.' -T add '.$ip_address.'/32';
$command = $firewall_path.'/pfctl -t '.$filter.' -T add '.$ip_address.'/32';
$result = shell($command);
}
@ -354,8 +371,8 @@
//unblock the ip address
function unblock($ip_address, $filter) {
//set global variables
global $firewall;
//define the global variables
global $firewall_path, $firewall_name;
//invalid ip address
if (!filter_var($ip_address, FILTER_VALIDATE_IP)) {
@ -363,22 +380,22 @@
}
//unblock the address
if ($firewall == 'iptables') {
$command = '/usr/sbin/./iptables -L '.$filter.' -n --line-numbers | grep "'.$ip_address.' " | cut -d " " -f1';
if ($firewall_name == 'iptables') {
$command = $firewall_path.'/./iptables -L '.$filter.' -n --line-numbers | grep "'.$ip_address.' " | cut -d " " -f1';
$line_number = trim(shell($command));
echo "\n". $command . " line ".__line__." result ".$result."\n";
if (is_numeric($line_number)) {
//$result = shell('iptables -D INPUT '.$line_number);
$command = '/usr/sbin/./iptables -D '.$filter.' '.$line_number;
$command = $firewall_path.'/./iptables -D '.$filter.' '.$line_number;
$result = shell($command);
echo "Unblock address ".$ip_address ." line ".$line_number." command ".$command." result ".$result."\n";
}
}
//unblock the address
if ($firewall == 'pf') {
if ($firewall_name == 'pf') {
//example: pfctl -t sip-auth-ip -T delete 127.0.0.5/32
$command = '/sbin/pfctl -t '.$filter.' -T delete '.$ip_address.'/32';
$command = $firewall_path.'/pfctl -t '.$filter.' -T delete '.$ip_address.'/32';
$result = shell($command);
}
@ -390,8 +407,8 @@
//is the ip address blocked
function is_blocked($ip_address) {
//set global variables
global $firewall;
//define the global variables
global $firewall_path, $firewall_name;
//invalid ip address
if (!filter_var($ip_address, FILTER_VALIDATE_IP)) {
@ -399,17 +416,17 @@
}
//determine whether to return true or false
if ($firewall == 'iptables') {
if ($firewall_name == 'iptables') {
//check to see if the address is blocked
$command = '/usr/sbin/./iptables -L -n --line-numbers | grep '.$ip_address;
$command = $firewall_path.'/./iptables -L -n --line-numbers | grep '.$ip_address;
$result = shell($command);
if (strlen($result) > 3) {
return true;
}
}
elseif ($firewall == 'pf') {
elseif ($firewall_name == 'pf') {
//check to see if the address is blocked
$command = '/sbin/pfctl -t ".$filter." -Ts | grep '.$ip_address;
$command = $firewall_path.'/pfctl -t ".$filter." -Ts | grep '.$ip_address;
$result = shell($command);
if (strlen($result) > 3) {
return true;
@ -644,6 +661,9 @@
//add IP table chains
function iptables_chain_add($chain) {
//define the global variables
global $firewall_path, $firewall_name;
//if the chain exists return true
if (iptables_chain_exists($chain)) {
echo "IPtables ".$chain." chain already exists\n";
@ -654,8 +674,8 @@
echo "Add iptables ".$chain." chain\n";
//add the chain
system('/usr/sbin/./iptables --new '.$chain);
system('/usr/sbin/./iptables -I INPUT -j '.$chain);
system($firewall_path.'/./iptables --new '.$chain);
system($firewall_path.'/./iptables -I INPUT -j '.$chain);
//check if the chain exists
if (iptables_chain_exists($chain)) {
@ -669,7 +689,11 @@
//check if the iptables chain exists
function iptables_chain_exists($chain) {
$command = "/usr/sbin/./iptables --list INPUT --numeric | grep ".$chain." | awk '{print \$1}' | sed ':a;N;\$!ba;s/\\n/,/g' ";
//define the global variables
global $firewall_path, $firewall_name;
//build the command to check if the iptables chain exists
$command = $firewall_path."/./iptables --list INPUT --numeric | grep ".$chain." | awk '{print \$1}' | sed ':a;N;\$!ba;s/\\n/,/g' ";
//if ($debug) { echo $command."\n"; }
$response = shell($command);
if (in_array($chain, explode(",", $response))) {