Subversion Repositories ALCASAR

<?php

    //

    // vnStat PHP frontend (c)2006-2010 Bjorge Dijkstra (bjd@jooz.net)

    //

    // 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 2 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, write to the Free Software

    // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    //

    //

    // see file COPYING or at http://www.gnu.org/licenses/gpl.html

    // for more information.

    //

    require 'config.php';

    require 'localize.php';

    require 'vnstat.php';

    validate_input();

    require "./themes/$style/theme.php";

    function allocate_color($im, $colors)

    {

	return imagecolorallocatealpha($im, $colors[0], $colors[1], $colors[2], $colors[3]);

    }

    function init_image()

    {

        global $im, $xlm, $xrm, $ytm, $ybm, $iw, $ih,$graph, $cl, $iface, $colorscheme, $style;

        if ($graph == 'none')

            return;

        //

        // image object

        //

        $xlm = 70;

        $xrm = 20;

        $ytm = 35;

        $ybm = 60;

        if ($graph == 'small')

        {

            $iw = 300 + $xrm + $xlm;

            $ih = 100 + $ytm + $ybm;

        }

        else

        {

            $iw = 600 + $xrm + $xlm;

            $ih = 200 + $ytm + $ybm;

        }

        $im = imagecreatetruecolor($iw,$ih);

        //

        // colors

        //

	$cs = $colorscheme;

	$cl['image_background'] = allocate_color($im, $cs['image_background']);

	$cl['background'] = allocate_color($im, $cs['graph_background']);

	$cl['background_2'] = allocate_color($im, $cs['graph_background_2']);

        $cl['grid_stipple_1'] = allocate_color($im, $cs['grid_stipple_1']);

        $cl['grid_stipple_2'] = allocate_color($im, $cs['grid_stipple_2']);

        $cl['text'] = allocate_color($im, $cs['text']);

        $cl['border'] = allocate_color($im, $cs['border']);

        $cl['rx'] = allocate_color($im, $cs['rx']);

        $cl['rx_border'] = allocate_color($im, $cs['rx_border']);

        $cl['tx'] = allocate_color($im, $cs['tx']);

        $cl['tx_border'] = allocate_color($im, $cs['tx_border']);

        imagefilledrectangle($im,0,0,$iw,$ih,$cl['image_background']);

	imagefilledrectangle($im,$xlm,$ytm,$iw-$xrm,$ih-$ybm, $cl['background']);

	$x_step = ($iw - $xlm - $xrm) / 12;

	$depth = ($x_step / 8) + 4;

	imagefilledpolygon($im, array($xlm, $ytm, $xlm, $ih - $ybm, $xlm - $depth, $ih - $ybm + $depth, $xlm - $depth, $ytm + $depth), 4, $cl['background_2']);

	imagefilledpolygon($im, array($xlm, $ih - $ybm, $xlm - $depth, $ih - $ybm + $depth, $iw - $xrm - $depth, $ih - $ybm  + $depth, $iw - $xrm, $ih - $ybm), 4, $cl['background_2']);

	// draw title

	$text = T('Traffic data for')." $iface";

 	$bbox = imagettfbbox(10, 0, GRAPH_FONT, $text);

	$textwidth = $bbox[2] - $bbox[0];

	imagettftext($im, 10, 0, ($iw-$textwidth)/2, ($ytm/2), $cl['text'], GRAPH_FONT, $text);

    }

    function draw_border()

    {

        global $im,$cl,$iw,$ih;

        imageline($im,     0,    0,$iw-1,    0, $cl['border']);

        imageline($im,     0,$ih-1,$iw-1,$ih-1, $cl['border']);

        imageline($im,     0,    0,    0,$ih-1, $cl['border']);

        imageline($im, $iw-1,    0,$iw-1,$ih-1, $cl['border']);

    }

    function draw_grid($x_ticks, $y_ticks)

    {

        global $im, $cl, $iw, $ih, $xlm, $xrm, $ytm, $ybm;

        $x_step = ($iw - $xlm - $xrm) / ($x_ticks ?: 1);

        $y_step = ($ih - $ytm - $ybm) / $y_ticks;

	$depth = 10;//($x_step / 8) + 4;

        $ls = array($cl['grid_stipple_1'],$cl['grid_stipple_2']);

        imagesetstyle($im, $ls);

        for ($i=$xlm;$i<=($iw-$xrm); $i += $x_step)

        {

            imageline($im, $i, $ytm, $i, $ih - $ybm, IMG_COLOR_STYLED);

	    imageline($im, $i, $ih - $ybm, $i - $depth, $ih - $ybm + $depth, IMG_COLOR_STYLED);

        }

        for ($i=$ytm;$i<=($ih-$ybm); $i += $y_step)

        {

            imageline($im, $xlm, $i, $iw - $xrm, $i, IMG_COLOR_STYLED);

	    imageline($im, $xlm, $i, $xlm - $depth, $i + $depth, IMG_COLOR_STYLED);

        }

        imageline($im, $xlm, $ytm, $xlm, $ih - $ybm, $cl['border']);

        imageline($im, $xlm, $ih - $ybm, $iw - $xrm, $ih - $ybm, $cl['border']);

    }

    function draw_data($data)

    {

        global $im,$cl,$iw,$ih,$xlm,$xrm,$ytm,$ybm;

        sort($data);

        $x_ticks = count($data);

        $y_ticks = 10;

        $y_scale = 1;

        $prescale = 1;

        $unit = 'K';

        $offset = 0;

        $gr_h = $ih - $ytm - $ybm;

        $x_step = ($iw - $xlm - $xrm) / ($x_ticks ?: 1);

        $y_step = ($ih - $ytm - $ybm) / $y_ticks;

        $bar_w = ($x_step / 2) ;

        //

        // determine scale

        //

        $low = 99999999999;

        $high = 0;

        for ($i=0; $i<$x_ticks; $i++)

        {

            if ($data[$i]['rx'] < $low)

            $low = $data[$i]['rx'];

            if ($data[$i]['tx'] < $low)

            $low = $data[$i]['tx'];

            if ($data[$i]['rx'] > $high)

            $high = $data[$i]['rx'];

            if ($data[$i]['tx'] > $high)

            $high = $data[$i]['tx'];

        }

        while ($high > ($prescale * $y_scale * $y_ticks))

        {

            $y_scale = $y_scale * 2;

            if ($y_scale >= 1024)

            {

            $prescale = $prescale * 1024;

            $y_scale = $y_scale / 1024;

            if ($unit == 'K')

                $unit = 'M';

            else if ($unit == 'M')

                $unit = 'G';

            else if ($unit == 'G')

                $unit = 'T';

            }

        }

        draw_grid($x_ticks, $y_ticks);

        //

        // graph scale factor (per pixel)

        //

	imagesetthickness($im, 1);

        $sf = ($prescale * $y_scale * $y_ticks) / $gr_h;

        if (count($data) == 0)

        {

            $text = T('no data available');

	    $bbox = imagettfbbox(10, 0, GRAPH_FONT, $text);

	    $textwidth = $bbox[2] - $bbox[0];

	    imagettftext($im, 10, 0, ($iw-$textwidth)/2, $ytm + 80, $cl['text'], GRAPH_FONT, $text);

        }

        else

        {

            //

            // draw bars

            //

            for ($i=0; $i<$x_ticks; $i++)

            {

        	$x = $xlm + ($i * $x_step);

        	$y = $ytm + ($ih - $ytm - $ybm) - (($data[$i]['rx'] - $offset) / $sf);

		$depth = $x_step / 8;

		$space = 0;

		$x1 = $x;

		$y1 = $y;

		$x2 = $x + $bar_w - $space;

		$y2 = $ih - $ybm;

        	imagefilledrectangle($im, $x1, $y1, $x2, $y2, $cl['rx']);

		imagerectangle($im, $x1, $y1, $x2, $y2, $cl['rx_border']);

		imagefilledrectangle($im, $x1 - $depth, $y1 + $depth, $x2 -$depth, $y2 + $depth, $cl['rx']);

		imagerectangle($im, $x1 - $depth, $y1 + $depth, $x2 - $depth, $y2 + $depth, $cl['rx_border']);

		imagefilledpolygon($im, array($x1, $y1, $x2, $y1, $x2 - $depth, $y1 + $depth, $x1 - $depth, $y1 + $depth), 4, $cl['rx']);

		imagepolygon($im, array($x1, $y1, $x2, $y1, $x2 - $depth, $y1 + $depth, $x1 - $depth, $y1 + $depth), 4, $cl['rx_border']);

		imagefilledpolygon($im, array($x2, $y1, $x2, $y2, $x2 - $depth, $y2 + $depth, $x2 - $depth, $y1 + $depth), 4, $cl['rx']);

		imagepolygon($im, array($x2, $y1, $x2, $y2, $x2 - $depth, $y2 + $depth, $x2 - $depth, $y1 + $depth), 4, $cl['rx_border']);

        	$y1 = $ytm + ($ih - $ytm - $ybm) - (($data[$i]['tx'] - $offset) / $sf);

		$x1 = $x1 + $bar_w;

		$x2 = $x2 + $bar_w;

        	imagefilledrectangle($im, $x1, $y1, $x2, $y2, $cl['tx']);

		imagerectangle($im, $x1, $y1, $x2, $y2, $cl['tx_border']);

        	imagefilledrectangle($im, $x1 - $depth, $y1 + $depth, $x2 - $depth, $y2 + $depth, $cl['tx']);

		imagerectangle($im, $x1 - $depth, $y1 + $depth, $x2 - $depth, $y2 + $depth, $cl['tx_border']);

		imagefilledpolygon($im, array($x1, $y1, $x2, $y1, $x2 - $depth, $y1 + $depth, $x1 - $depth, $y1 + $depth), 4, $cl['tx']);

		imagepolygon($im, array($x1, $y1, $x2, $y1, $x2 - $depth, $y1 + $depth, $x1 - $depth, $y1 + $depth), 4, $cl['tx_border']);

		imagefilledpolygon($im, array($x2, $y1, $x2, $y2, $x2 - $depth, $y2 + $depth, $x2 - $depth, $y1 + $depth), 4, $cl['tx']);

		imagepolygon($im, array($x2, $y1, $x2, $y2, $x2 - $depth, $y2 + $depth, $x2 - $depth, $y1 + $depth), 4, $cl['tx_border']);

            }

            //

            // axis labels

            //

            for ($i=0; $i<=$y_ticks; $i++)

            {

                $label = ($i * $y_scale).$unit;

		$bbox = imagettfbbox(8, 0, GRAPH_FONT, $label);

		$textwidth = $bbox[2] - $bbox[0];

		imagettftext($im, 8, 0, $xlm - $textwidth - 16, ($ih - $ybm) - ($i * $y_step) + 8 + $depth, $cl['text'], GRAPH_FONT, $label);

            }

            for ($i=0; $i<$x_ticks; $i++)

            {

                $label = $data[$i]['img_label'];

		$bbox = imagettfbbox(9, 0, GRAPH_FONT, $label);

		$textwidth = $bbox[2] - $bbox[0];

		imagettftext($im, 9, 0, $xlm + ($i * $x_step) + ($x_step / 2) - ($textwidth / 2) - $depth - 4, $ih - $ybm + 20 + $depth, $cl['text'], GRAPH_FONT, $label);

            }

        }

        draw_border();

        //

        // legend

        //

        imagefilledrectangle($im, $xlm, $ih-$ybm+39, $xlm+8,$ih-$ybm+47,$cl['rx']);

        imagerectangle($im, $xlm, $ih-$ybm+39, $xlm+8,$ih-$ybm+47,$cl['text']);

	imagettftext($im, 8,0, $xlm+14, $ih-$ybm+48,$cl['text'], GRAPH_FONT,T('bytes in'));

        imagefilledrectangle($im, $xlm+120 , $ih-$ybm+39, $xlm+128,$ih-$ybm+47,$cl['tx']);

        imagerectangle($im, $xlm+120, $ih-$ybm+39, $xlm+128,$ih-$ybm+47,$cl['text']);

	imagettftext($im, 8,0, $xlm+134, $ih-$ybm+48,$cl['text'], GRAPH_FONT,T('bytes out'));

    }

    function output_image()

    {

        global $page,$hour,$day,$month,$im,$iface;

        if ($page == 'summary')

            return;

        init_image();

        if ($page == 'h')

        {

            draw_data($hour);

        }

        else if ($page == 'd')

        {

            draw_data($day);

        }

        else if ($page == 'm')

        {

            draw_data($month);

        }

        header('Content-type: image/png');

        imagepng($im);

    }

    get_vnstat_data();

    output_image();

?>