pfSense

<?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 = 50) {

	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 = "";

		preg_match("/(\b(?:\d{1,3}\.){3}\d{1,3}(\.\w+)?)\s.*\s(\b(?:\d{1,3}\.){3}\d{1,3}(\.\w+)?)/", $logent, $log_split);

		$flent['src'] 		= convert_port_period_to_colon($log_split[1]);

		$flent['dst'] 		= convert_port_period_to_colon($log_split[3]);

		preg_match("/(.*)\s.*\spf:\s.*\srule\s(.*)\(match\)\:\s(.*)\s\w+\son\s(\w+)\:\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, 50);

		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;

	}

}

?>