1 files changed, 77 insertions, 0 deletions
diff --git a/config/widget-snort/snort_alerts.inc.php b/config/widget-snort/snort_alerts.inc.php
new file mode 100644
index 00000000..99e3ee9f
--- /dev/null
+++ b/config/widget-snort/snort_alerts.inc.php
@@ -0,0 +1,77 @@
+<?
+function get_snort_alerts($snort_alerts, $nentries, $tail = 20) {
+	global $config, $g;
+	$logarr = "";
+	/* Always do a reverse tail, to be sure we're grabbing the 'end' of the alerts. */
+	exec("/usr/bin/tail -r -n {$tail} {$snort_alerts}", $logarr);
+	
+	$snortalerts = array();
+	
+	$counter = 0;
+	
+	foreach ($logarr as $logent) {
+		if($counter >= $nentries)
+			break;
+
+		$alert = parse_snort_alert_line($logent);
+		if ($alert != "") {
+			$counter++;
+			$snortalerts[] = $alert;
+		}
+
+	}
+	/* Since the rules are in reverse order, flip them around if needed based on the user's preference */
+	return isset($config['syslog']['reverse']) ? $snortalerts : array_reverse($snortalerts);
+}
+
+function parse_snort_alert_line($line) {
+	$log_split = "";
+	
+	preg_match("/^(.*)\s+\[\*\*\]\s+\[(\d+\:\d+:\d+)\]\s(.*)\s(.*)\s+\[\*\*\].*\s+\[Priority:\s(\d+)\]\s{(.*)}\s+(.*)\s->\s(.*)$/U", $line, $log_split);
+	
+	list($all, $alert['time'], $alert['rule'], $alert['category'], $alert['descr'], 
+	  $alert['priority'], $alert['proto'], $alert['src'], $alert['dst']) = $log_split;
+
+	$usableline = true;
+
+	if(trim($alert['src']) == "")
+		$usableline = false;
+	if(trim($alert['dst']) == "")
+		$usableline = false;
+
+	if($usableline == true) {
+		return $alert;
+	} else {
+		if($g['debug']) {
+			log_error("There was a error parsing line: $line.   Please report to mailing list or forum.");
+		}
+		return "";
+	}
+}
+
+/* AJAX specific handlers */
+function handle_snort_ajax($snort_alerts_logfile, $nentries = 5, $tail = 50) {
+	if($_GET['lastsawtime'] or $_POST['lastsawtime']) {
+		if($_GET['lastsawtime'])
+			$lastsawtime = $_GET['lastsawtime'];
+		if($_POST['lastsawtime'])
+			$lastsawtime = $_POST['lastsawtime'];
+		/*  compare lastsawrule's time stamp to alert logs.
+		 *  afterwards return the newer records so that client
+                 *  can update AJAX interface screen.
+		 */
+		$new_rules = "";
+		$snort_alerts = get_snort_alerts($snort_alerts_logfile, $nentries);
+		foreach($snort_alerts 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($row_time > $lastsawtime) {
+				$new_rules .= "{$log_row['time']}||{$log_row['priority']}||{$log_row['category']}||{$log_row['src']}||{$log_row['dst']}||" . time() . "||\n";
+			}
+		}
+		echo $new_rules;
+		exit;
+	}
+}
+?>
+\ No newline at end of file