Add live MTR to LookingGlass
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Marc Hagen
parent
c18884639e
commit
f6a470e8f8
223
LookingGlass.php
223
LookingGlass.php
@ -180,7 +180,7 @@ class LookingGlass
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*/
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public static function mtr(string $host): bool
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{
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return self::procExecute('mtr -4 --report --report-wide', $host);
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return self::procExecute('mtr --raw -n -4 -c ' . self::MTR_COUNT, $host);
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}
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/**
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@ -191,7 +191,7 @@ class LookingGlass
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*/
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public static function mtr6(string $host): bool
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{
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return self::procExecute('mtr -6 --report --report-wide', $host);
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return self::procExecute('mtr --raw -n -6 -c ' . self::MTR_COUNT, $host);
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}
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/**
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@ -232,11 +232,11 @@ class LookingGlass
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private static function procExecute(string $cmd, string $host, int $failCount = 2): bool
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{
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// define output pipes
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$spec = array(
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0 => array("pipe", "r"),
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1 => array("pipe", "w"),
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2 => array("pipe", "w")
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);
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$spec = [
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0 => ['pipe', 'r'],
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1 => ['pipe', 'w'],
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2 => ['pipe', 'w']
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];
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// sanitize + remove single quotes
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$host = str_replace('\'', '', filter_var($host, FILTER_SANITIZE_URL));
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@ -251,16 +251,17 @@ class LookingGlass
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// check for mtr/traceroute
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if (strpos($cmd, 'mtr') !== false) {
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$type = 'mtr';
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$parser = new Parser();
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} elseif (strpos($cmd, 'traceroute') !== false) {
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$type = 'traceroute';
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} else {
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$type = '';
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}
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$fail = 0;
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$match = 0;
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$fail = 0;
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$match = 0;
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$traceCount = 0;
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$lastFail = 'start';
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$lastFail = 'start';
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// iterate stdout
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while (($str = fgets($pipes[1], 4096)) != null) {
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// check for output buffer
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@ -273,12 +274,14 @@ class LookingGlass
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// correct output for mtr
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if ($type === 'mtr') {
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if ($match < 10 && preg_match('/^[0-9]\. /', $str, $string)) {
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$str = preg_replace('/^[0-9]\. /', ' ' . $string[0], $str);
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$match++;
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} else {
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$str = preg_replace('/^[0-9]{2}\. /', ' ' . substr($str, 0, 4), $str);
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}
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// correct output for mtr
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$parser->update($str);
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echo '---' . PHP_EOL . $parser->__toString() . PHP_EOL . str_pad('', 4096) . PHP_EOL;
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// flush output buffering
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@ob_flush();
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flush();
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continue;
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}
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// correct output for traceroute
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elseif ($type === 'traceroute') {
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@ -319,7 +322,7 @@ class LookingGlass
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}
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$status = proc_get_status($process);
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if ($status['running'] == true) {
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if ($status['running']) {
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// close pipes that are still open
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foreach ($pipes as $pipe) {
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fclose($pipe);
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@ -341,3 +344,189 @@ class LookingGlass
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return true;
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}
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}
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class Hop
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{
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/** @var int */
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public $idx;
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/** @var string */
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public $asn = '';
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/** @var float */
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public $avg = 0.0;
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/** @var int */
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public $loss = 0;
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/** @var float */
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public $stdev = 0.0;
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/** @var int */
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public $sent = 0;
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/** @var int */
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public $recieved = 0;
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/** @var float */
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public $last = 0.0;
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/** @var float */
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public $best = 0.0;
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/** @var float */
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public $worst = 0.0;
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/** @var string[] */
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public $ips = [];
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/** @var string[] */
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public $hosts = [];
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/** @var float[] */
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public $timings = [];
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}
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class RawHop
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{
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/** @var string */
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public $dataType;
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/** @var int */
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public $idx;
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/** @var string */
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public $value;
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}
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class Parser
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{
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/** @var Hop[] */
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protected $hopsCollection = [];
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/** @var int */
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private $hopCount = 0;
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/** @var int */
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private $outputWidth = 38;
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public function __construct()
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{
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putenv('RES_OPTIONS=retrans:1 retry:1 timeout:1 attempts:1');
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}
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public function __toString(): string
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{
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$str = '';
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foreach ($this->hopsCollection as $index => $hop) {
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$host = $hop->hosts[0] ?? $hop->ips[0] ?? '???';
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if (strlen($host) > $this->outputWidth) {
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$this->outputWidth = strlen($host);
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}
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$hop->recieved = count($hop->timings);
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if (count($hop->timings)) {
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$hop->last = $hop->timings[count($hop->timings) - 1];
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$hop->best = $hop->timings[0];
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$hop->worst = $hop->timings[0];
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$hop->avg = array_sum($hop->timings) / count($hop->timings);
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}
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if (count($hop->timings) > 1) {
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$hop->stdev = $this->stDev($hop->timings);
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}
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foreach ($hop->timings as $time) {
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if ($hop->best > $time) {
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$hop->best = $time;
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}
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if ($hop->worst < $time) {
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$hop->worst = $time;
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}
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}
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$hop->loss = $hop->sent ? (100 * ($hop->sent - $hop->recieved)) / $hop->sent : 100;
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$str = sprintf(
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"%s%2d.|-- %s%3d.0%% %3d %5.1f %5.1f %5.1f %5.1f %5.1f\n",
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$str,
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$index,
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str_pad($host, $this->outputWidth + 3, ' ', STR_PAD_RIGHT),
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$hop->loss,
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$hop->sent,
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$hop->last,
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$hop->avg,
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$hop->best,
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$hop->worst,
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$hop->stdev
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);
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}
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return sprintf(" Host%sLoss%% Snt Last Avg Best Wrst StDev\n%s", str_pad('', $this->outputWidth + 7, ' ', STR_PAD_RIGHT), $str);
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}
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private function stDev(array $array): float
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{
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$sdSquare = function ($x, $mean) {
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return pow($x - $mean, 2);
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};
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// square root of sum of squares devided by N-1
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return sqrt(array_sum(array_map($sdSquare, $array, array_fill(0, count($array), (array_sum($array) / count($array))))) / (count($array) - 1));
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}
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public function update($rawMtrInput)
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{
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//Store each line of output in rawhop structure
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$things = explode(' ', $rawMtrInput);
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if (count($things) !== 3 && (count($things) !== 4 && $things[0] === 'p')) {
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return;
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}
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$rawHop = new RawHop();
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$rawHop->dataType = $things[0];
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$rawHop->idx = (int)$things[1];
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$rawHop->value = $things[2];
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if ($this->hopCount < $rawHop->idx + 1) {
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$this->hopCount = $rawHop->idx + 1;
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}
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if (!isset($this->hopsCollection[$rawHop->idx])) {
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$this->hopsCollection[$rawHop->idx] = new Hop();
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}
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$hop = $this->hopsCollection[$rawHop->idx];
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$hop->idx = $rawHop->idx;
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switch ($rawHop->dataType) {
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case 'h':
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$hop->ips[] = $rawHop->value;
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$hop->hosts[] = gethostbyaddr($rawHop->value) ? : null;
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break;
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case 'd':
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//Not entirely sure if multiple IPs. Better use -n in mtr and resolve later in summarize.
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//out.Hops[data.idx].Host = append(out.Hops[data.idx].Host, data.value)
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break;
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case 'p':
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$hop->sent++;
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$hop->timings[] = (float)$rawHop->value / 1000;
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break;
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}
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$this->hopsCollection[$rawHop->idx] = $hop;
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$this->filterLastDupeHop();
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}
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// Function to calculate standard deviation (uses sd_square)
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private function filterLastDupeHop()
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{
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// filter dupe last hop
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$finalIdx = 0;
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$previousIp = '';
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foreach ($this->hopsCollection as $key => $hop) {
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if (count($hop->ips) && $hop->ips[0] !== $previousIp) {
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$previousIp = $hop->ips[0];
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$finalIdx = $key + 1;
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}
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}
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unset($this->hopsCollection[$finalIdx]);
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usort($this->hopsCollection, function ($a, $b) {
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return $a->idx - $b->idx;
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});
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}
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}
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