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<?php
//set variables for log
$filter_logfile = "{$g['varlog_path']}/filter.log";
$nentries = 5;
$filterlog = conv_clog_filter($filter_logfile, $nentries);
/* AJAX related routines */
handle_ajax();
/* format filter logs */
function conv_clog_filter($logfile, $tail = 8) {
global $config, $nentries, $logfile;
$logfile = "/var/log/filter.log";
/* make interface/port table */
$iftable = array();
$iftable[$config['interfaces']['lan']['if']] = "LAN";
$iftable[get_real_wan_interface()] = "WAN";
for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++)
$iftable[$config['interfaces']['opt' . $i]['if']] = $config['interfaces']['opt' . $i]['descr'];
$sor = isset($config['syslog']['reverse']) ? "-r" : "";
$logarr = "";
exec("/usr/sbin/clog {$logfile} | /usr/bin/tail {$sor} -n {$tail}", $logarr);
$filterlog = array();
$counter = 0;
foreach ($logarr as $logent) {
if($counter > $nentries)
break;
$log_split = "";
//old reg ex
//preg_match("/(.*)\s.*\spf:\s.*\srule\s(.*)\(match\)\:\s(.*)\s\w+\son\s(\w+)\:\s(.*)\s>\s(.*)\:\s.*/", $logent, $log_split);
preg_match("/(.*)\s.*\spf:\s.*\srule\s(.*)\(match\)\:\s(.*)\s\w+\son\s(\w+)\:\s.*\slength\:.*\s(.*)\s>\s(.*)\:\s.*/", $logent, $log_split);
$logent = strtoupper($logent);
$do_not_display = false;
if(stristr(strtoupper($logent), "UDP") == true)
$flent['proto'] = "UDP";
else if(stristr(strtoupper($logent), "TCP") == true)
$flent['proto'] = "TCP";
else if(stristr(strtoupper($logent), "ICMP") == true)
$flent['proto'] = "ICMP";
else if(stristr(strtoupper($logent), "HSRP") == true)
$flent['proto'] = "HSRP";
else if(stristr(strtoupper($logent), "ESP") == true)
$flent['proto'] = "ESP";
else if(stristr(strtoupper($logent), "AH") == true)
$flent['proto'] = "AH";
else if(stristr(strtoupper($logent), "GRE") == true)
$flent['proto'] = "GRE";
else if(stristr(strtoupper($logent), "IGMP") == true)
$flent['proto'] = "IGMP";
else if(stristr(strtoupper($logent), "CARP") == true)
$flent['proto'] = "CARP";
else if(stristr(strtoupper($logent), "PFSYNC") == true)
$flent['proto'] = "PFSYNC";
else
$flent['proto'] = "TCP";
$time_regex = "";
preg_match("/.*([0-9][0-9]:[0-9][0-9]:[0-9][0-9])/", $log_split[1], $time_regex);
$row_time = strtotime($time_regex[1]);
$flent['time'] = $row_time;
$flent['act'] = $log_split[3];
$friendly_int = convert_real_interface_to_friendly_interface_name($log_split[4]);
$flent['interface'] = strtoupper($friendly_int);
if($config['interfaces'][$friendly_int]['descr'] <> "")
$flent['interface'] = "{$config['interfaces'][$friendly_int]['descr']}";
$flent['src'] = convert_port_period_to_colon($log_split[5]);
$flent['dst'] = convert_port_period_to_colon($log_split[6]);
$flent['dst'] = str_replace(": NBT UDP PACKET(137)", "", $flent['dst']);
$tmp = split("/", $log_split[2]);
$flent['rulenum'] = $tmp[0];
$counter++;
$filterlog[] = $flent;
}
return $filterlog;
}
function convert_port_period_to_colon($addr) {
$addr_split = split("\.", $addr);
if($addr_split[4] == "")
$newvar = $addr_split[0] . "." . $addr_split[1] . "." . $addr_split[2] . "." . $addr_split[3];
else
$newvar = $addr_split[0] . "." . $addr_split[1] . "." . $addr_split[2] . "." . $addr_split[3] . ":" . $addr_split[4];
if($newvar == "...")
return $addr;
return $newvar;
}
function format_ipf_ip($ipfip) {
list($ip,$port) = explode(",", $ipfip);
if (!$port)
return $ip;
return $ip . ", port " . $port;
}
/* AJAX specific handlers */
function handle_ajax() {
if($_GET['getrulenum'] or $_POST['getrulenum']) {
if($_GET['getrulenum'])
$rulenum = $_GET['getrulenum'];
if($_POST['getrulenum'])
$rulenum = $_POST['getrulenum'];
$rule = `pfctl -vvsr | grep @{$rulenum}`;
echo "The rule that triggered this action is:\n\n{$rule}";
exit;
}
if($_GET['lastsawtime'] or $_POST['lastsawtime']) {
global $filter_logfile,$filterent;
if($_GET['lastsawtime'])
$lastsawtime = $_GET['lastsawtime'];
if($_POST['lastsawtime'])
$lastsawtime = $_POST['lastsawtime'];
/* compare lastsawrule's time stamp to filter logs.
* afterwards return the newer records so that client
* can update AJAX interface screen.
*/
$new_rules = "";
$filterlog = conv_clog_filter($filter_logfile, 8);
foreach($filterlog as $log_row) {
$time_regex = "";
preg_match("/.*([0-9][0-9]:[0-9][0-9]:[0-9][0-9])/", $log_row['time'], $time_regex);
$row_time = strtotime($time_regex[1]);
if (strstr(strtolower($log_row['act']), "p"))
$img = "<img border='0' src='/themes/metallic/images/icons/icon_pass.gif'>";
else if(strstr(strtolower($filterent['act']), "r"))
$img = "<img border='0' src='/themes/metallic/images/icons/icon_reject.gif'>";
else
$img = "<img border='0' src='/themes/metallic/images/icons/icon_block.gif'>";
//echo "{$time_regex[1]} - $row_time > $lastsawtime<p>";
if($row_time > $lastsawtime)
$new_rules .= "{$img}||{$log_row['time']}||{$log_row['interface']}||{$log_row['src']}||{$log_row['dst']}||{$log_row['proto']}||" . time() . "||\n";
}
echo $new_rules;
exit;
}
}
?>
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