cjdns/contrib/php/peerStats

#!/usr/bin/env php
<?php

require 'Bencode.php';
require 'Cjdns.php';
require 'publicKey2ipv6.php';

define('PASSWORD', 'NONE');

$cjdns = new Cjdns(PASSWORD, "127.0.0.1", 11234);

$peers = []; $page = 0;
do
{
        $res = $cjdns->call("InterfaceController_peerStats", ['page' => $page++]);
        $peers = array_merge($peers, $res['peers']);
} while(!empty($res['more']));

$table = new table();

$table->add(['Public Key', 'Ipv6', 'User', 'State', 'Last', 'Bytes In', 'Bytes Out', 'Lost', 'Ver', 'In']);

foreach ($peers as $a)
{
	$pK   = preg_match('/.{23}([a-z0-6]{4}).+(.{6})$/', $a['addr'], $m) ? $m[1].'...'.$m[2] : '?';
	$ip   = preg_replace('#.+:#', ':', publicKey2ipv6(explode('.', $a['addr'])[5]));
	$ver  = preg_match('/^v(\d+)/', $a['addr'], $m) ? $m[1] : '?';
	$date = str_replace(date(' d.m.y'), '', date('H:i:s d.m.y', $a['last']/1000));
	$table->add([$pK, $ip, $a['user'], $a['state'], $date,
		_h($a['bytesIn']), _h($a['bytesOut']), $a['lostPackets'],
		$ver, $a['isIncoming']]);
}

$table->printSimple();

// human readable bytes
function _h($x)
{
	if ($x < 1024) return sprintf("%5.2f",    $x); $x /= 1024;
	if ($x < 1024) return sprintf("%5.2f Kb", $x); $x /= 1024;
	if ($x < 1024) return sprintf("%5.2f Mb", $x); $x /= 1024;
	if ($x < 1024) return sprintf("%5.2f Gb", $x); $x /= 1024;
	return $x;
}


// class for draw table data
class table
{
	private $data  = [];
	private $width = [];
	private $cur_row   = 0;
	public function add($a)
	{
		array_push($this->data, $a);
		foreach ($a as $i => $x)
		if (@$this->width[$i] < strlen($x))
			$this->width[$i] = strlen($x);
	}
	public function printSimple()
	{
		$this->printLine();
		$this->printRows(1); // header
		$this->printLine();
		$this->printRows();
		$this->printLine();
	}
	public function printLine()
	{
		foreach ($this->width as $w)
		{
			printf("+");
			printf($this->strdup($w+2));
		}
		printf("+\n");
	}
	public function printRows($n = NULL)
	{
		if (is_null($n)) $n = count($this->data);
		for ($this->cur_row; $n && $this->cur_row<count($this->data); $this->cur_row++, $n--)
		{
			foreach ($this->width as $i => $w)
			{
				$this->printCell($this->data[$this->cur_row][$i], $w);
			}
			printf("|\n");
		}
	}
	private function strdup($n,$x='-') { $st=''; for ($i=0;$i<$n;$i++)$st.=$x; return $st; }
	private function printCell($data, $width)
	{
		if (empty($data)) $data = ''; // clear zero-value
		if (!is_numeric($data)) // align string to center
		{
			$d = ($width - strlen($data)) >> 1;
			$data .= $this->strdup($d, ' ');
		}
		printf("| %{$width}s ", $data);
	}
}