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<?php
/*
* Copyright (C) 2019 Alexander Marston (alexander.marston@gmail.com)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class vnStat {
protected $executablePath;
protected $vnstatVersion;
protected $vnstatJsonVersion;
protected $vnstatData;
public function __construct ($executablePath) {
if (isset($executablePath)) {
$this->executablePath = $executablePath;
// Execute a command to output a json dump of the vnstat data
$vnstatStream = popen("$this->executablePath --json", 'r');
// Is the stream valid?
if (is_resource($vnstatStream)) {
$streamBuffer = '';
while (!feof($vnstatStream)) {
$streamBuffer .= fgets($vnstatStream);
}
// Close the handle
pclose($vnstatStream);
$this->processVnstatData($streamBuffer);
} else {
}
} else {
die();
}
}
private function processVnstatData($vnstatJson) {
$decodedJson = json_decode($vnstatJson, true);
// Check the JSON is valid
if (json_last_error() != JSON_ERROR_NONE) {
throw new Exception('JSON is invalid');
}
$this->vnstatData = $decodedJson;
$this->vnstatVersion = $decodedJson['vnstatversion'];
$this->vnstatJsonVersion = $decodedJson['jsonversion'];
}
public function getVnstatVersion() {
return $this->vnstatVersion;
}
public function getVnstatJsonVersion() {
return $this->vnstatJsonVersion;
}
public function getInterfaces() {
// Create a placeholder array
$vnstatInterfaces = [];
foreach($this->vnstatData['interfaces'] as $interface) {
array_push($vnstatInterfaces, $interface['id']);
}
return $vnstatInterfaces;
}
public function getInterfaceData($timeperiod, $type, $interface) {
// If json version equals 1, add an 's' onto the end of each type.
// e.g. 'top' becomes 'tops'
if ($this->vnstatJsonVersion == 1) {
$typeAppend = 's';
}
// Blank placeholder
$trafficData = [];
// Get the array index for the chosen interface
$arrayIndex = array_search($interface, array_column($this->vnstatData['interfaces'], 'id'));
if ($timeperiod == 'top10') {
if ($type == 'table') {
foreach ($this->vnstatData['interfaces'][$arrayIndex]['traffic']['top'.$typeAppend] as $traffic) {
if (is_array($traffic)) {
$i++;
$trafficData[$i]['label'] = date('d/m/Y', strtotime($traffic['date']['month'] . "/" . $traffic['date']['day'] . "/" . $traffic['date']['year']));;
$trafficData[$i]['rx'] = formatSize($traffic['rx'], $this->vnstatJsonVersion);
$trafficData[$i]['tx'] = formatSize($traffic['tx'], $this->vnstatJsonVersion);
$trafficData[$i]['total'] = formatSize(($traffic['rx'] + $traffic['tx']), $this->vnstatJsonVersion);
$trafficData[$i]['totalraw'] = ($traffic['rx'] + $traffic['tx']);
}
}
}
}
if ($timeperiod == 'hourly') {
if ($type == 'table') {
foreach ($this->vnstatData['interfaces'][$arrayIndex]['traffic']['hour'.$typeAppend] as $traffic) {
if (is_array($traffic)) {
$i++;
if ($this->vnstatJsonVersion == 1) {
$hour = $traffic['id'];
} else {
$hour = $traffic['time']['hour'];
}
$trafficData[$i]['label'] = date("d/m/Y H:i", mktime($hour, 0, 0, $traffic['date']['month'], $traffic['date']['day'], $traffic['date']['year']));
$trafficData[$i]['time'] = mktime($hour, 0, 0, $traffic['date']['month'], $traffic['date']['day'], $traffic['date']['year']);
$trafficData[$i]['rx'] = formatSize($traffic['rx'], $this->vnstatJsonVersion);
$trafficData[$i]['tx'] = formatSize($traffic['tx'], $this->vnstatJsonVersion);
$trafficData[$i]['total'] = formatSize(($traffic['rx'] + $traffic['tx']), $this->vnstatJsonVersion);
}
}
usort($trafficData, sortingFunction);
} else if ($type == 'graph') {
foreach ($this->vnstatData['interfaces'][$arrayIndex]['traffic']['hour'.$typeAppend] as $traffic) {
if (is_array($traffic)) {
$i++;
if ($this->vnstatJsonVersion == 1) {
$hour = $traffic['id'];
} else {
$hour = $traffic['time']['hour'];
}
$trafficData[$i]['label'] = sprintf("Date(%d, %d, %d, %d, %d, %d)", $traffic['date']['year'], $traffic['date']['month']-1, $traffic['date']['day'], $hour, 0, 0);
$trafficData[$i]['rx'] = kibibytesToBytes($traffic['rx'], $this->vnstatJsonVersion);
$trafficData[$i]['tx'] = kibibytesToBytes($traffic['tx'], $this->vnstatJsonVersion);
$trafficData[$i]['total'] = kibibytesToBytes(($traffic['rx'] + $traffic['tx']), $this->vnstatJsonVersion);
}
}
}
}
if ($timeperiod == 'daily') {
if ($type == 'table') {
foreach ($this->vnstatData['interfaces'][$arrayIndex]['traffic']['day'.$typeAppend] as $traffic) {
if (is_array($traffic)) {
$i++;
$trafficData[$i]['label'] = date('d/m/Y', mktime(0, 0, 0, $traffic['date']['month'], $traffic['date']['day'], $traffic['date']['year']));
$trafficData[$i]['rx'] = formatSize($traffic['rx'], $this->vnstatJsonVersion);
$trafficData[$i]['tx'] = formatSize($traffic['tx'], $this->vnstatJsonVersion);
$trafficData[$i]['total'] = formatSize(($traffic['rx'] + $traffic['tx']), $this->vnstatJsonVersion);
}
}
} else if ($type == 'graph') {
foreach ($this->vnstatData['interfaces'][$arrayIndex]['traffic']['day'.$typeAppend] as $traffic) {
if (is_array($traffic)) {
$i++;
$trafficData[$i]['label'] = sprintf("Date(%d, %d, %d, %d, %d, %d)", $traffic['date']['year'], $traffic['date']['month']-1, $traffic['date']['day'], 0, 0, 0);
$trafficData[$i]['rx'] = kibibytesToBytes($traffic['rx'], $this->vnstatJsonVersion);
$trafficData[$i]['tx'] = kibibytesToBytes($traffic['tx'], $this->vnstatJsonVersion);
$trafficData[$i]['total'] = kibibytesToBytes(($traffic['rx'] + $traffic['tx']), $this->vnstatJsonVersion);
}
}
}
}
if ($timeperiod == 'monthly') {
if ($type == 'table') {
foreach ($this->vnstatData['interfaces'][$arrayIndex]['traffic']['month'.$typeAppend] as $traffic) {
if (is_array($traffic)) {
$i++;
$trafficData[$i]['label'] = date('F Y', mktime(0, 0, 0, $traffic['date']['month'], 10, $traffic['date']['year']));
$trafficData[$i]['rx'] = formatSize($traffic['rx'], $this->vnstatJsonVersion);
$trafficData[$i]['tx'] = formatSize($traffic['tx'], $this->vnstatJsonVersion);
$trafficData[$i]['total'] = formatSize(($traffic['rx'] + $traffic['tx']), $this->vnstatJsonVersion);
}
}
} else if ($type == 'graph') {
foreach ($this->vnstatData['interfaces'][$arrayIndex]['traffic']['month'.$typeAppend] as $traffic) {
if (is_array($traffic)) {
$i++;
$trafficData[$i]['label'] = sprintf("Date(%d, %d, %d, %d, %d, %d)", $traffic['date']['year'], $traffic['date']['month'] - 1, 10, 0, 0, 0);
$trafficData[$i]['rx'] = kibibytesToBytes($traffic['rx'], $this->vnstatJsonVersion);
$trafficData[$i]['tx'] = kibibytesToBytes($traffic['tx'], $this->vnstatJsonVersion);
$trafficData[$i]['total'] = kibibytesToBytes(($traffic['rx'] + $traffic['tx']), $this->vnstatJsonVersion);
}
}
}
}
if ($type == 'graph') {
// Get the largest value and then prefix (B, KB, MB, GB, etc)
$trafficLargestValue = getLargestValue($trafficData);
$trafficLargestPrefix = getLargestPrefix($trafficLargestValue);
foreach($trafficData as $key => $value) {
$trafficData[$key]['rx'] = formatBytesTo($value['rx'], $trafficLargestPrefix);
$trafficData[$key]['tx'] = formatBytesTo($value['tx'], $trafficLargestPrefix);
$trafficData[$key]['total'] = formatBytesTo($value['total'], $trafficLargestPrefix);
$trafficData[$key]['delimiter'] = $trafficLargestPrefix;
}
}
return $trafficData;
}
}
?>