nfdump support for with NFSen (#10376)

* rework the nfsen stuff

* add the new netflow stats page

* update the docs for nfsen

* add the functions back in

* readd the defaults

* rework lowest_five_minutes into lowest_time

* nfsen_channel_rrds removed and will rework it in later post rewriting

* rework something that accidentally got nuked in merging

* rework formatting a bit

* remove a accidentaly added chunk of text =^.^=

* rework some tag capitalization

* remove a accidentally added [

* '='=>' = '

includes/html/functions.inc.php

@@ -571,7 +571,7 @@ function generate_sensor_url($sensor, $vars = array())
     return generate_url(array('page' => 'graphs', 'id' => $sensor['sensor_id'], 'type' => $sensor['graph_type'], 'from' => Config::get('time.day')), $vars);
 }//end generate_sensor_url()
 
- 
+
 function generate_port_url($port, $vars = array())
 {
     return generate_url(array('page' => 'device', 'device' => $port['device_id'], 'tab' => 'port', 'port' => $port['port_id']), $vars);
@@ -1640,3 +1640,105 @@ function get_sensor_label_color($sensor, $type = 'sensors')
     $unit = __("$type.{$sensor['sensor_class']}.unit");
     return "<span class='label $label_style'>".trim(format_si($sensor['sensor_current']).$unit)."</span>";
 }
+
+/**
+ * @params int unix time
+ * @params int seconds
+ * @return int
+ *
+ * Rounds down to the nearest interval.
+ *
+ * The first argument is required and it is the unix time being
+ * rounded down.
+ *
+ * The second value is the time interval. If not specified, it
+ * defaults to 300, or 5 minutes.
+ */
+function lowest_time($time, $seconds = 300)
+{
+    return $time - ($time % $seconds);
+}
+
+/**
+ * @params int
+ * @return string
+ *
+ * This returns the subpath for working with nfdump.
+ *
+ * 1 value is taken and that is a unix time stamp. It will be then be rounded
+ * off to the lowest five minutes earlier.
+ *
+ * The return string will be a path partial you can use with nfdump to tell it what
+ * file or range of files to use.
+ *
+ * Below ie a explanation of the layouts as taken from the NfSen config file.
+ *  0             no hierachy levels - flat layout - compatible with pre NfSen version
+ *  1 %Y/%m/%d    year/month/day
+ *  2 %Y/%m/%d/%H year/month/day/hour
+ *  3 %Y/%W/%u    year/week_of_year/day_of_week
+ *  4 %Y/%W/%u/%H year/week_of_year/day_of_week/hour
+ *  5 %Y/%j       year/day-of-year
+ *  6 %Y/%j/%H    year/day-of-year/hour
+ *  7 %Y-%m-%d    year-month-day
+ *  8 %Y-%m-%d/%H year-month-day/hour
+ */
+function time_to_nfsen_subpath($time)
+{
+    $time=lowest_time($time);
+    $layout=Config::get('nfsen_subdirlayout');
+
+    if ($layout == 0) {
+        return 'nfcapd.'.date('YmdHi', $time);
+    } elseif ($layout == 1) {
+        return date('Y\/m\/d\/\n\f\c\a\p\d\.YmdHi', $time);
+    } elseif ($layout == 2) {
+        return date('Y\/m\/d\/H\/\n\f\c\a\p\d\.YmdHi', $time);
+    } elseif ($layout == 3) {
+        return date('Y\/W\/w\/\n\f\c\a\p\d\.YmdHi', $time);
+    } elseif ($layout == 4) {
+        return date('Y\/W\/w\/H\/\n\f\c\a\p\d\.YmdHi', $time);
+    } elseif ($layout == 5) {
+        return date('Y\/z\/\n\f\c\a\p\d\.YmdHi', $time);
+    } elseif ($layout == 6) {
+        return date('Y\/z\/H\/\n\f\c\a\p\d\.YmdHi', $time);
+    } elseif ($layout == 7) {
+        return date('Y\-m\-d\/\n\f\c\a\p\d\.YmdHi', $time);
+    } elseif ($layout == 8) {
+        return date('Y\-m\-d\/H\/\n\f\c\a\p\d\.YmdHi', $time);
+    }
+}
+
+/**
+ * @params string hostname
+ * @return string
+ *
+ * Takes a hostname and transforms it to the name
+ * used by nfsen.
+*/
+function nfsen_hostname($hostname)
+{
+    $nfsen_hostname=str_replace('.', Config::get('nfsen_split_char'), $hostname);
+
+    if (!is_null(Config::get('nfsen_suffix'))) {
+        $nfsen_hostname=str_replace(Config::get('nfsen_suffix'), '', $nfsen_hostname);
+    }
+    return $nfsen_hostname;
+}
+
+/**
+ * @params string hostname
+ * @return string
+ *
+ * Takes a hostname and returns the path to the nfsen
+ * live dir.
+*/
+function nfsen_live_dir($hostname)
+{
+    $hostname=nfsen_hostname($hostname);
+
+    foreach (Config::get('nfsen_base') as $base_dir) {
+        if (file_exists($base_dir) && is_dir($base_dir)) {
+            return $base_dir.'/profiles-data/live/'.$hostname;
+        }
+    }
+}