graph.php 15 KB
Newer Older
Ad Schellevis's avatar
Ad Schellevis committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390
<?php
/*
	graph.php
	part of m0n0wall (http://m0n0.ch/wall)
	
	Copyright (C) 2004-2006 T. Lechat <dev@lechat.org>, Manuel Kasper <mk@neon1.net>
	and Jonathan Watt <jwatt@jwatt.org>.
	All rights reserved.
	
	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:
	
	1. Redistributions of source code must retain the above copyright notice,
	   this list of conditions and the following disclaimer.
	
	2. Redistributions in binary form must reproduce the above copyright
	   notice, this list of conditions and the following disclaimer in the
	   documentation and/or other materials provided with the distribution.
	
	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	POSSIBILITY OF SUCH DAMAGE.
*/
/*
	pfSense_MODULE:	graph
*/

##|+PRIV
##|*IDENT=page-diagnostics-interfacetraffic
##|*NAME=Diagnostics: Interface Traffic page
##|*DESCR=Allow access to the 'Diagnostics: Interface Traffic' page.
##|*MATCH=graph.php*
##|-PRIV

require("globals.inc");
require("guiconfig.inc");

header("Last-Modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
header("Expires: " . gmdate( "D, j M Y H:i:s", time() ) . " GMT" );
header("Cache-Control: no-store, no-cache, must-revalidate" ); // HTTP/1.1
header("Cache-Control: post-check=0, pre-check=0", FALSE );
header("Pragma: no-cache"); // HTTP/1.0
header("Content-type: image/svg+xml");

/********** HTTP GET Based Conf ***********/
$ifnum=@$_GET["ifnum"];  // BSD / SNMP interface name / number
$ifnum = get_real_interface($ifnum);
$ifname=@$_GET["ifname"]?$_GET["ifname"]:"Interface $ifnum";  //Interface name that will be showed on top right of graph

/********* Other conf *******/
if (isset($config["widgets"]["trafficgraphs"]["scale_type"]))
	$scale_type = $config["widgets"]["trafficgraphs"]["scale_type"];
else
	$scale_type = "up";

$nb_plot=120;                   //NB plot in graph
if ($_GET["timeint"])
	$time_interval = $_GET["timeint"];		//Refresh time Interval
else
	$time_interval = 3;

if ($_GET["initdelay"])
	$init_delay = $_GET["initdelay"];		//Initial Delay
else
	$init_delay = 3;

//SVG attributes
$attribs['axis']='fill="black" stroke="black"';
$attribs['in']='fill="#FF0000" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="7"';
$attribs['out']='fill="#000000" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="7"';
$attribs['graph_in']='fill="none" stroke="#FF0000" stroke-opacity="0.8"';
$attribs['graph_out']='fill="none" stroke="#000000" stroke-opacity="0.8"';
$attribs['legend']='fill="black" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="4"';
$attribs['graphname']='fill="#FF0000" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="8"';
$attribs['grid_txt']='fill="gray" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="6"';
$attribs['grid']='stroke="gray" stroke-opacity="0.5"';
$attribs['switch_unit']='fill="#FF0000" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="4" text-decoration="underline"';
$attribs['switch_scale']='fill="#FF0000" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="4" text-decoration="underline"';
$attribs['error']='fill="blue" font-family="Arial" font-size="4"';
$attribs['collect_initial']='fill="gray" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="4"';

//Error text if we cannot fetch data : depends on which method is used
$error_text = "Cannot get data about interface " . htmlspecialchars($ifnum);

$height=100;            //SVG internal height : do not modify
$width=200;             //SVG internal width : do not modify

$fetch_link = "ifstats.php?if=" . htmlspecialchars($ifnum);

/* check for custom theme colors */
if(file_exists("/usr/local/www/themes/{$g['theme']}/graph.php")) {
	$themetxt = file_get_contents("/usr/local/www/themes/{$g['theme']}/graph.php");
	eval($themetxt);
} 

/********* Graph DATA **************/
print('<?xml version="1.0" ?>' . "\n");?>
<svg width="100%" height="100%" viewBox="0 0 <?=$width?> <?=$height?>" preserveAspectRatio="none" xml:space="preserve" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" onload="init(evt)">
  <g id="graph">
    <rect id="bg" x1="0" y1="0" width="100%" height="100%" fill="white"/>
    <line id="axis_x" x1="0" y1="0" x2="0" y2="100%" <?=$attribs['axis']?>/>
    <line id="axis_y" x1="0" y1="100%" x2="100%" y2="100%" <?=$attribs['axis']?>/>
    <path id="graph_out" d="M0 <?=$height?> L 0 <?=$height?>" <?=$attribs['graph_out']?>/>
    <path id="graph_in"  d="M0 <?=$height?> L 0 <?=$height?>" <?=$attribs['graph_in']?>/>
    <path id="grid"  d="M0 <?=$height/4*1?> L <?=$width?> <?=$height/4*1?> M0 <?=$height/4*2?> L <?=$width?> <?=$height/4*2?> M0 <?=$height/4*3?> L <?=$width?> <?=$height/4*3?>" <?=$attribs['grid']?>/>
    <text id="grid_txt1" x="<?=$width?>" y="<?=$height/4*1?>" <?=$attribs['grid_txt']?> text-anchor="end"> </text>
    <text id="grid_txt2" x="<?=$width?>" y="<?=$height/4*2?>" <?=$attribs['grid_txt']?> text-anchor="end"> </text>
    <text id="grid_txt3" x="<?=$width?>" y="<?=$height/4*3?>" <?=$attribs['grid_txt']?> text-anchor="end"> </text>
    <text id="graph_in_lbl" x="5" y="8" <?=$attribs['in']?>><?=gettext("In"); ?></text>
    <text id="graph_out_lbl" x="5" y="16" <?=$attribs['out']?>><?=gettext("Out"); ?></text>
    <text id="graph_in_txt" x="20" y="8" <?=$attribs['in']?>> </text>
    <text id="graph_out_txt" x="20" y="16" <?=$attribs['out']?>> </text>
    <text id="ifname" x="<?=$width?>" y="8" <?=$attribs['graphname']?> text-anchor="end"><?=htmlspecialchars($ifname)?></text>
    <text id="switch_unit" x="<?=$width*0.55?>" y="5" <?=$attribs['switch_unit']?>><?=gettext("Switch to bytes/s"); ?></text>
    <text id="switch_scale" x="<?=$width*0.55?>" y="11" <?=$attribs['switch_scale']?>><?=gettext("AutoScale"); ?> (<?=$scale_type?>)</text>
    <text id="date" x="<?=$width*0.33?>" y="5" <?=$attribs['legend']?>> </text>
    <text id="time" x="<?=$width*0.33?>" y="11" <?=$attribs['legend']?>> </text>
    <text id="graphlast" x="<?=$width*0.55?>" y="17" <?=$attribs['legend']?>><?=gettext("Graph shows last"); ?> <?=$time_interval*$nb_plot?> <?=gettext("seconds"); ?></text>
    <polygon id="axis_arrow_x" <?=$attribs['axis']?> points="<?=($width) . "," . ($height)?> <?=($width-2) . "," . ($height-2)?> <?=($width-2) . "," . $height?>"/>
    <text id="error" x="<?=$width*0.5?>" y="<?=$height*0.5?>"  visibility="hidden" <?=$attribs['error']?> text-anchor="middle"><?=$error_text?></text>
    <text id="collect_initial" x="<?=$width*0.5?>" y="<?=$height*0.5?>"  visibility="hidden" <?=$attribs['collect_initial']?> text-anchor="middle"><?=gettext("Collecting initial data, please wait"); ?>...</text>
  </g>
  <script type="text/ecmascript">
    <![CDATA[

/**
 * getURL is a proprietary Adobe function, but it's simplicity has made it very
 * popular. If getURL is undefined we spin our own by wrapping XMLHttpRequest.
 */
if (typeof getURL == 'undefined') {
  getURL = function(url, callback) {
    if (!url)
      throw '<?=gettext("No URL for getURL"); ?>';

    try {
      if (typeof callback.operationComplete == 'function')
        callback = callback.operationComplete;
    } catch (e) {}
    if (typeof callback != 'function')
      throw '<?=gettext("No callback function for getURL"); ?>';

    var http_request = null;
    if (typeof XMLHttpRequest != 'undefined') {
      http_request = new XMLHttpRequest();
    }
    else if (typeof ActiveXObject != 'undefined') {
      try {
        http_request = new ActiveXObject('Msxml2.XMLHTTP');
      } catch (e) {
        try {
          http_request = new ActiveXObject('Microsoft.XMLHTTP');
        } catch (e) {}
      }
    }
    if (!http_request)
      throw '<?=gettext("Both getURL and XMLHttpRequest are undefined"); ?>';

    http_request.onreadystatechange = function() {
      if (http_request.readyState == 4) {
        callback( { success : true,
                    content : http_request.responseText,
                    contentType : http_request.getResponseHeader("Content-Type") } );
      }
    }
    http_request.open('GET', url, true);
    http_request.send(null);
  }
}

var SVGDoc = null;
var last_ifin = 0;
var last_ifout = 0;
var last_ugmt = 0;
var max = 0;
var plot_in = new Array();
var plot_out = new Array();

var max_num_points = <?=$nb_plot?>;  // maximum number of plot data points
var step = <?=$width?> / max_num_points ;
var unit = 'bits';
var scale_type = '<?=$scale_type?>';

function init(evt) {
  SVGDoc = evt.target.ownerDocument;
  SVGDoc.getElementById("switch_unit").addEventListener("mousedown", switch_unit, false);
  SVGDoc.getElementById("switch_scale").addEventListener("mousedown", switch_scale, false);

  fetch_data();
}

function switch_unit(event)
{
  SVGDoc.getElementById('switch_unit').firstChild.data = '<?=gettext("Switch to"); ?> ' + unit + '/s';
  unit = (unit == 'bits') ? 'bytes' : 'bits';
}

function switch_scale(event)
{
  scale_type = (scale_type == 'up') ? '<?=gettext("follow"); ?>' : '<?=gettext("up"); ?>';
  SVGDoc.getElementById('switch_scale').firstChild.data = 'AutoScale (' + scale_type + ')';
}

function fetch_data() {
  getURL('<?=$fetch_link?>', plot_data);
}

function plot_data(obj) {
  // Show datetimelegend
  var now = new Date();
  var time = LZ(now.getHours()) + ":" + LZ(now.getMinutes()) + ":" + LZ(now.getSeconds());
  SVGDoc.getElementById('time').firstChild.data = time;
  var date = (now.getMonth()+1) + "/" + now.getDate() + "/" + now.getFullYear();
  SVGDoc.getElementById('date').firstChild.data = date;

  if (!obj.success)
    return handle_error();  // getURL failed to get data

  var t = obj.content.split("|");
  var ugmt = parseFloat(t[0]);  // ugmt is an unixtimestamp style
  var ifin = parseInt(t[1], 10);    // number of bytes received by the interface
  var ifout = parseInt(t[2], 10);   // number of bytes sent by the interface
  var scale;

  if (!isNumber(ifin) || !isNumber(ifout))
    return handle_error();

  var diff_ugmt  = ugmt - last_ugmt;
  var diff_ifin  = ifin - last_ifin;
  var diff_ifout = ifout - last_ifout;

  if (diff_ugmt == 0)
    diff_ugmt = 1;  /* avoid division by zero */

  last_ugmt = ugmt;
  last_ifin = ifin;
  last_ifout = ifout;
  var graphTimerId = 0;
  switch (plot_in.length) {
  	case 0:
  		SVGDoc.getElementById("collect_initial").setAttributeNS(null, 'visibility', 'visible');
		plot_in[0] = diff_ifin / diff_ugmt;
		plot_out[0] = diff_ifout / diff_ugmt;
		setTimeout('fetch_data()',<?=1000*($time_interval + $init_delay)?>);
		return;
	case 1:
    	SVGDoc.getElementById("collect_initial").setAttributeNS(null, 'visibility', 'hidden');
    	break;
    case max_num_points:
		// shift plot to left if the maximum number of plot points has been reached
		var i = 0;
		while (i < max_num_points) {
		  plot_in[i] = plot_in[i+1];
		  plot_out[i] = plot_out[++i];
		}
		plot_in.length--;
		plot_out.length--;
  }

  plot_in[plot_in.length] = diff_ifin / diff_ugmt;
  plot_out[plot_out.length]= diff_ifout / diff_ugmt;
  var index_plot = plot_in.length - 1;

  SVGDoc.getElementById('graph_in_txt').firstChild.data = formatSpeed(plot_in[index_plot], unit);
  SVGDoc.getElementById('graph_out_txt').firstChild.data = formatSpeed(plot_out[index_plot], unit);

  /* determine peak for sensible scaling */
  if (scale_type == 'up') {
    if (plot_in[index_plot] > max)
      max = plot_in[index_plot];
    if (plot_out[index_plot] > max)
      max = plot_out[index_plot];
  }
  else if (scale_type == 'follow') {
    i = 0;
    max = 0;
    while (i < plot_in.length) {
      if (plot_in[i] > max)
        max = plot_in[i];
      if (plot_out[i] > max)
        max = plot_out[i];
      i++;
    }
  }

  var rmax;  // max, rounded up

  if (unit == 'bits') {
    /* round up max, such that
         100 kbps -> 200 kbps -> 400 kbps -> 800 kbps -> 1 Mbps -> 2 Mbps -> ... */
    rmax = 12500;
    i = 0;
    while (max > rmax) {
      i++;
      if (i && (i % 4 == 0))
        rmax *= 1.25;
      else
        rmax *= 2;
    }
  } else {
    /* round up max, such that
         10 KB/s -> 20 KB/s -> 40 KB/s -> 80 KB/s -> 100 KB/s -> 200 KB/s -> 400 KB/s -> 800 KB/s -> 1 MB/s ... */
    rmax = 10240;
    i = 0;
    while (max > rmax) {
      i++;
      if (i && (i % 4 == 0))
        rmax *= 1.25;
      else
        rmax *= 2;
      
      if (i == 8)
        rmax *= 1.024;
    }
  }

  scale = <?=$height?> / rmax;

  /* change labels accordingly */
  SVGDoc.getElementById('grid_txt1').firstChild.data = formatSpeed(3*rmax/4,unit);
  SVGDoc.getElementById('grid_txt2').firstChild.data = formatSpeed(2*rmax/4,unit);
  SVGDoc.getElementById('grid_txt3').firstChild.data = formatSpeed(rmax/4,unit);

  var path_in = "M 0 " + (<?=$height?> - (plot_in[0] * scale));
  var path_out = "M 0 " + (<?=$height?> - (plot_out[0] * scale));
  for (i = 1; i < plot_in.length; i++)
  {
    var x = step * i;
    var y_in = <?=$height?> - (plot_in[i] * scale);
    var y_out = <?=$height?> - (plot_out[i] * scale);
    path_in += " L" + x + " " + y_in;
    path_out += " L" + x + " " + y_out;
  }

  SVGDoc.getElementById('error').setAttributeNS(null, 'visibility', 'hidden');
  SVGDoc.getElementById('graph_in').setAttributeNS(null, 'd', path_in);
  SVGDoc.getElementById('graph_out').setAttributeNS(null, 'd', path_out);

  setTimeout('fetch_data()',<?=1000*$time_interval?>);
}

function handle_error() {
  SVGDoc.getElementById("error").setAttributeNS(null, 'visibility', 'visible');
  setTimeout('fetch_data()',<?=1000*$time_interval?>);
}

function isNumber(a) {
  return typeof a == 'number' && isFinite(a);
}

function formatSpeed(speed, unit) {
  if (unit == 'bits')
    return formatSpeedBits(speed);
  if (unit == 'bytes')
    return formatSpeedBytes(speed);
}

function formatSpeedBits(speed) {
  // format speed in bits/sec, input: bytes/sec
  if (speed < 125000)
    return Math.round(speed / 125) + " <?=gettext("Kbps"); ?>";
  if (speed < 125000000)
    return Math.round(speed / 1250)/100 + " <?=gettext("Mbps"); ?>";
  // else
  return Math.round(speed / 1250000)/100 + " <?=gettext("Gbps"); ?>";  /* wow! */
}

function formatSpeedBytes(speed) {
  // format speed in bytes/sec, input:  bytes/sec
  if (speed < 1048576)
    return Math.round(speed / 10.24)/100 + " <?=gettext("KB/s"); ?>";
  if (speed < 1073741824)
    return Math.round(speed / 10485.76)/100 + " <?=gettext("MB/s"); ?>";
  // else
  return Math.round(speed / 10737418.24)/100 + " <?=gettext("GB/s"); ?>";  /* wow! */
}

function LZ(x) {
  return (x < 0 || x > 9 ? "" : "0") + x;
}

    ]]>
  </script>
</svg>