diff options
Diffstat (limited to 'config/suricata')
| -rw-r--r-- | config/suricata/suricata_blocked.php | 72 |
1 files changed, 60 insertions, 12 deletions
diff --git a/config/suricata/suricata_blocked.php b/config/suricata/suricata_blocked.php index c3a0c1e3..a091835d 100644 --- a/config/suricata/suricata_blocked.php +++ b/config/suricata/suricata_blocked.php @@ -259,19 +259,67 @@ if ($savemsg) { foreach (glob("{$suricatalogdir}*/block.log*") as $alertfile) { $fd = fopen($alertfile, "r"); if ($fd) { - /* 0 1 2 3 4 5 6 7 8 9 10 */ - /* File format timestamp,action,sig_generator,sig_id,sig_rev,msg,classification,priority,proto,ip,port */ - while (($fields = fgetcsv($fd, 1000, ',', '"')) !== FALSE) { - if(count($fields) != 11) { - log_error("[suricata] ERROR: block.log entry failed to parse correctly with too many or not enough CSV entities, skipping this entry..."); - log_error("[suricata] Failed block.log entry fields are: " . print_r($fields, true)); - continue; + + /*************** FORMAT for file -- BLOCK -- **************************************************************************/ + /* Line format: timestamp action [**] [gid:sid:rev] msg [**] [Classification: class] [Priority: pri] {proto} ip:port */ + /* 0 1 2 3 4 5 6 7 8 9 10 */ + /**********************************************************************************************************************/ + + $buf = ""; + while (($buf = fgets($fd)) !== FALSE) { + $fields = array(); + $tmp = array(); + + /***************************************************************/ + /* Parse block log entry to find the parts we want to display. */ + /* We parse out all the fields even though we currently use */ + /* just a few of them. */ + /***************************************************************/ + + // Field 0 is the event timestamp + $fields['time'] = substr($buf, 0, strpos($buf, ' ')); + + // Field 1 is the action + if (strpos($buf, '[') !== FALSE && strpos($buf, ']') !== FALSE) + $fields['action'] = substr($buf, strpos($buf, '[') + 1, strpos($buf, ']') - strpos($buf, '[') - 1); + else + $fields['action'] = null; + + // The regular expression match below returns an array as follows: + // [2] => GID, [3] => SID, [4] => REV, [5] => MSG, [6] => CLASSIFICATION, [7] = PRIORITY + preg_match('/\[\*{2}\]\s\[((\d+):(\d+):(\d+))\]\s(.*)\[\*{2}\]\s\[Classification:\s(.*)\]\s\[Priority:\s(\d+)\]\s/', $buf, $tmp); + $fields['gid'] = trim($tmp[2]); + $fields['sid'] = trim($tmp[3]); + $fields['rev'] = trim($tmp[4]); + $fields['msg'] = trim($tmp[5]); + $fields['class'] = trim($tmp[6]); + $fields['priority'] = trim($tmp[7]); + + // The regular expression match below looks for the PROTO, IP and PORT fields + // and returns an array as follows: + // [1] = PROTO, [2] => IP:PORT + if (preg_match('/\{(.*)\}\s(.*)/', $buf, $tmp)) { + // Get PROTO + $fields['proto'] = trim($tmp[1]); + + // Get IP + $fields['ip'] = trim(substr($tmp[2], 0, strrpos($tmp[2], ':'))); + if (is_ipaddrv6($fields['ip'])) + $fields['ip'] = inet_ntop(inet_pton($fields['ip'])); + + // Get PORT + $fields['port'] = trim(substr($tmp[2], strrpos($tmp[2], ':') + 1)); } - $fields[9] = inet_pton($fields[9]); - if (isset($tmpblocked[$fields[9]])) { - if (!is_array($src_ip_list[$fields[9]])) - $src_ip_list[$fields[9]] = array(); - $src_ip_list[$fields[9]][$fields[5]] = "{$fields[5]} - " . substr($fields[0], 0, -7); + + // In the unlikely event we read an old log file and fail to parse + // out an IP address, just skip the record since we can't use it. + if (empty($fields['ip'])) + continue; + $fields['ip'] = inet_pton($fields['ip']); + if (isset($tmpblocked[$fields['ip']])) { + if (!is_array($src_ip_list[$fields['ip']])) + $src_ip_list[$fields['ip']] = array(); + $src_ip_list[$fields['ip']][$fields['msg']] = "{$fields['msg']} - " . substr($fields['time'], 0, -7); } } fclose($fd); |