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<?php

  /* ****************************************** *
   *                                            *
   * (c)2003 by Jan Krupa (krupaj@mobilnews.cz) *
   * http://www.mobilnews.cz/honza/             *
   *                                            *
   * ****************************************** */

  function return_ap_index($comp_ar, $comp_ar_num, $ap_name) {
  // Return computer index in array

    for ($ix1 = 0; ($ix1 < $comp_ar_num); $ix1++) {
      $comp_ar_tmp0 = $comp_ar[$ix1][0];
      $comp_ar_tmp1 = $comp_ar[$ix1][1];
      
      if ( (substr($comp_ar_tmp0, 0, 1) == "!")
        || (substr($comp_ar_tmp0, 0, 1) == "$")
        || (substr($comp_ar_tmp0, 0, 1) == "%") ) { $comp_ar_tmp0 = substr($comp_ar_tmp0, 1, (strlen($comp_ar_tmp0)-1)); }
      
      if ( ($comp_ar_tmp0 == $ap_name)     // name
        || ($comp_ar_tmp1 == $ap_name) ) { // ip
        return $ix1;
      }
    }

    return (-1);

  }

  function return_ip_state($state_ar, $state_ar_num, $state_type, $state_ip) {
  // Return ip address state
  // $state_type - 0 = availability, 1 = packet loss

    for ($ix1 = 0; ($ix1 < $state_ar_num); $ix1++) {
      if ($state_ar[$ix1][0] == $state_ip) {
        return $state_ar[$ix1][(1+$state_type)];
      }
    }

    return (-1);

  }

  function return_link_str1($in_s1) {
    $l_tmp_pat = "";
    $l_tmp_chr = '0'; if (strlen($in_s1) > 1) { $l_tmp_chr = substr($in_s1, (strlen($in_s1)-2), 1); }
    for ($j1 = 0; ($j1 < (substr($in_s1, (strlen($in_s1)-1), 1) + 1)); $j1++) {
      $l_tmp_pat = $l_tmp_pat . $l_tmp_chr;
    }

    return $l_tmp_pat;
  }

  function assign_color($im, $in_col) {
  // Assign defined color to line

    $ln_color=ImageColorExact($im, 180, 180, 180);
    switch ($in_col) {
      case '-' : $ln_color = ImageColorExact($im, 255, 255, 255); break;
      case 1   : $ln_color = ImageColorExact($im,   0,   0,   0); break;
      case 2   : $ln_color = ImageColorExact($im, 180,   0,   0); break;
      case 3   : $ln_color = ImageColorExact($im,   0, 180,   0); break;
      case 4   : $ln_color = ImageColorExact($im,   0,   0, 180); break;
      case 5   : $ln_color = ImageColorExact($im, 255,   0, 255); break; // magenta
      case 6   : $ln_color = ImageColorExact($im, 180, 180,   0); break; // yellow
      case 7   : $ln_color = ImageColorExact($im,   0, 180, 180); break; // white blue
      case 8   : $ln_color = ImageColorExact($im, 255,   0,   0); break;
      case 9   : $ln_color = ImageColorExact($im,   0, 255,   0); break;
    }

    return $ln_color;

  }

  function placeAP ($im, $x1, $y1, $ap_name, $ap_ip, $ap_type, $ap_state, $ap_lat) {
  // Place computer on the map

    $ap_showip = 1;
    if ($ap_ip == "127.0.0.1") { $ap_showip = 0; }

    // ! ... hide ip and packet latency information
    // $ ... hide ip
    // % ... hide packet latency information

    $ap_name_show = $ap_name;
    if ( (substr($ap_name, 0, 1) == "!") || (substr($ap_name, 0, 1) == "$") ) {
      $ap_showip = 0;
      $ap_name_show = substr($ap_name, 1, (strlen($ap_name)-1));
    }

    $ap_lat_show = $ap_lat;
    if ( (substr($ap_name, 0, 1) == "!") || (substr($ap_name, 0, 1) == "%") ) {
      $ap_lat_show = 0;
      $ap_name_show = substr($ap_name, 1, (strlen($ap_name)-1)); // not needed if ! (already done in previous step)
    }

    $ap_xsize = 40;
    $ap_ysize = 20;
    $ap_rowh = $ap_ysize/2;
    $ap_name_font = 1;
    $ap_lat_font = 1;
    $ap_ip_font = 1;

    if ($ap_showip == 0) { $ap_ysize=$ap_ysize/2; }
    $ap_name_size = ImageFontWidth($ap_name_font)*strlen($ap_name_show);
    $ap_ip_size = ImageFontWidth($ap_ip_font)*strlen($ap_ip);
    $ap_lat_size = ImageFontWidth($ap_lat_font)*strlen(round($ap_lat_show))+3;
    if ($ap_lat_show == 0) { $ap_lat_size = 1; }

    if (($ap_name_size + $ap_lat_size + 4) > ($ap_xsize)) {
      $ap_xsize = $ap_name_size + $ap_lat_size + 4;
      /*
      if (($ap_ip_size + 10) > $ap_xsize) {
        $ap_xsize = $ap_ip_size + 10;
      }
      */
    }

    if (($ap_ip_size + 5) > ($ap_xsize)) {
      $ap_xsize = $ap_ip_size + 5;
    }

    switch ($ap_state) {
      case 0 : $ap_color = ImageColorExact($im, 255, 0, 0); $ap_color2=ImageColorExact($im, 255, 140, 140); break;
      case 1 : $ap_color = ImageColorExact($im, 0, 255, 0); $ap_color2=ImageColorExact($im, 140, 255, 140); break;
      case 2 : $ap_color = ImageColorExact($im, 180, 180, 180); $ap_color2=ImageColorExact($im, 220, 220, 220); break;
    }

    ImageRectangle($im, ($x1-($ap_xsize/2)), ($y1-($ap_ysize/2)), ($x1+($ap_xsize/2)), ($y1+($ap_ysize/2)), ImageColorExact($im, 0, 0, 0));
    ImageFilledRectangle($im, ($x1-($ap_xsize/2-1)), ($y1-($ap_ysize/2-1)), ($x1+($ap_xsize/2-$ap_lat_size)), ($y1-($ap_ysize/2-$ap_rowh)), $ap_color);
    if ($ap_showip == 1) {
      ImageLine($im, ($x1-($ap_xsize/2-1)), ($y1-($ap_ysize/2-1-$ap_rowh)), ($x1+($ap_xsize/2-1)), ($y1-($ap_ysize/2-1-$ap_rowh)), ImageColorExact($im, 140, 140, 140));
    }

    if ($ap_lat_show !=0 ) {
      if ($ap_lat_show < 15) {
        ImageFilledRectangle($im, ($x1+($ap_xsize/2-$ap_lat_size+2)), ($y1-($ap_ysize/2-1)), ($x1+($ap_xsize/2-1)), ($y1-($ap_ysize/2-$ap_rowh)), $ap_color2);
      } else {
        ImageFilledRectangle($im, ($x1+($ap_xsize/2-$ap_lat_size+2)), ($y1-($ap_ysize/2-1)), ($x1+($ap_xsize/2-1)), ($y1-($ap_ysize/2-$ap_rowh)), ImageColorExact($im, 255, 140, 140));
      }
      ImageLine($im, ($x1+($ap_xsize/2-$ap_lat_size+1)), ($y1-($ap_ysize/2-1)), ($x1+($ap_xsize/2-$ap_lat_size+1)), ($y1-($ap_ysize/2-$ap_rowh)),ImageColorExact($im, 140, 140, 140));
      ImageString($im, $ap_lat_font, ($x1+($ap_xsize/2)-$ap_lat_size+3), $y1-($ap_ysize/2-1), round($ap_lat_show), ImageColorExact($im, 0, 0, 0));
    }

    if ($ap_showip == 1) {
      ImageFilledRectangle($im, ($x1-($ap_xsize/2-1)), ($y1-($ap_ysize/2-2-$ap_rowh)), ($x1+($ap_xsize/2-1)), ($y1+($ap_ysize/2-1)), ImageColorExact($im, 220, 220, 220));
    }

    for ($i=1; $i<=$ap_type; $i++) {
      ImageRectangle($im, ($x1-($ap_xsize/2)-$i), ($y1-($ap_ysize/2)-$i), ($x1+($ap_xsize/2)+$i), ($y1+($ap_ysize/2)+$i), ImageColorExact($im, 0, 0, 0));
    }

    ImageString($im, $ap_name_font, ($x1-($ap_name_size/2)-($ap_lat_size/2)+2), $y1-($ap_ysize/2-2), $ap_name_show, ImageColorExact($im, 0, 0, 0));
    if ($ap_showip == 1) {
      ImageString($im, $ap_ip_font, ($x1-$ap_ip_size/2), ($y1+2), $ap_ip, ImageColorExact($im, 0, 0, 0));
    }

  }

  function placeLN($im, $x1, $y1, $x2, $y2, $lnd) {
  // Place link onto map

    // Find out how to draw lines
    $ln_dir = 0; // 0 = horizontal, 1 = verical
    $tmp_x = abs($x1 - $x2);
    $tmp_y = abs($y1 - $y2);
    if ($tmp_x > $tmp_y) {
      $ln_dir = 1;
    }

    if ($ln_dir == 0) {
    // Horizontal
      $tmp_s1 = $x1 - round(strlen($lnd) / 2);
      for ($ix1 = $tmp_s1; $ix1 < ($tmp_s1 + strlen($lnd)); $ix1++) {
        ImageLine($im, $ix1, $y1, ($x2 - $x1 + $ix1), $y2, assign_color($im, substr($lnd, ($ix1 - $tmp_s1), 1)));
      }
    }
    else {
    // Vertical
      $tmp_s1 = $y1 - round(strlen($lnd) / 2);
      for ($ix1 = $tmp_s1; $ix1 < ($tmp_s1 + strlen($lnd)); $ix1++) {
        ImageLine($im, $x1, $ix1, $x2, ($y2 - $y1 + $ix1), assign_color($im, substr($lnd, ($ix1 - $tmp_s1), 1)));
      }
    }

  }

  // ------------------------------------------------------------------------

  $image_filename = $argv[1];

  // Basic definitions
  $calstats_version = "0.1.1";
  $calstats_id = "CaLStats";
  $image_date_lu = "Last update ";

  // Date
  $a_date = getdate();
  $a_date_minutes = $a_date['minutes']; if ($a_date_minutes < 10) { $a_date_minutes = "0" . $a_date_minutes; }
  $a_date_seconds = $a_date['seconds']; if ($a_date_seconds < 10) { $a_date_seconds = "0" . $a_date_seconds; }
  $image_date =  $image_date_lu . $a_date['mday'] . " " . $a_date['month'] . " " . $a_date['year'] . " "
                                . $a_date['hours'] . ":" . $a_date_minutes . ":" . $a_date_seconds;

  // --- Load config file - begin -------------------------------------------
  $file_in = fopen($image_filename . ".config", "r");
    if (!$file_in) { exit; }

  $fin_line=rtrim(fgets($file_in, 1024));
    $image_title = strtok($fin_line, ";");
    $image_xsize = strtok(";");
    $image_ysize = strtok(";");
    $image_legend = strtok(";"); // legend location

  fclose($file_in);
  // --- Load config file - end ---------------------------------------------

  // --- Load computer data - begin -----------------------------------------
  $file_in = fopen($image_filename . ".comp", "r");
    if (!$file_in) { exit; }

  $comp_num = 0;
  while (!feof($file_in)) {
    $fin_line=rtrim(fgets($file_in, 1024));
      $a_comp[$comp_num][0] = strtok($fin_line, ";"); // name
      $a_comp[$comp_num][1] = strtok(";"); // ip
      $a_comp[$comp_num][2] = strtok(";"); // type
      $a_comp[$comp_num][3] = strtok(";"); // x1
      $a_comp[$comp_num][4] = strtok(";"); // y1
    $comp_num++;
  }
  $comp_num--;

  fclose($file_in);
  // --- Load computer data - end -------------------------------------------

  // --- Load links data - begin --------------------------------------------
  $link_show = 1;
  if (file_exists($image_filename . ".link")) {
    $file_in = fopen($image_filename . ".link", "r");
      if (!$file_in) { exit; }

    $link_num = 0;
    while (!feof($file_in)) {
      $fin_line=rtrim(fgets($file_in, 1024));
        $link_tmp_type = strtok($fin_line, ";"); // link_type
        $a_link[$link_num][0] = $link_tmp_type;

        $link_tmp = strtok(";");
        while ($link_tmp != "") {
          $a_link[$link_num][0] = $link_tmp_type;
          $a_link[$link_num][3] = 0; // was it drawed on the screen
          $a_link[$link_num][1] = $link_tmp; // comp
          $link_tmp = strtok(";");
          $a_link[$link_num][2] = $link_tmp; // comp
          if ($link_tmp != "") { $link_num++; }
        }
    }

    fclose($file_in);
  }
  else {
    $link_show=0;
  }
  // --- Load links data - end ----------------------------------------------

  // --- Load legend data - begin -------------------------------------------
  $legend_show = 1;
  if (file_exists($image_filename . ".legend")) {
    $file_in = fopen($image_filename . ".legend", "r");
      if (!$file_in) { exit; }

    $legend_num = 0;
    while (!feof($file_in)) {
      $fin_line=rtrim(fgets($file_in, 1024));
        $a_legend[$legend_num][0] = strtok($fin_line, ";"); // name
        $a_legend[$legend_num][1] = strtok(";"); // ip
      $legend_num++;
    }
    $legend_num--;

    fclose($file_in);
  }
  else {
    $legend_show = 0;
  }
  // --- Load legend data - end ---------------------------------------------

  // --- Load links state - begin -------------------------------------------
  $file_in = fopen($image_filename . ".state", "r");
    if (!$file_in) { exit; }

  $state_num = 0;
  while (!feof($file_in)) {
    $fin_line=rtrim(fgets($file_in, 1024));
      $a_state[$state_num][0] = strtok($fin_line, ";"); // ip
      $a_state[$state_num][1] = strtok(";"); // available
      $a_state[$state_num][2] = strtok(";"); // packet loss
    $state_num++;
  }
  $state_num--;

  fclose($file_in);
  // --- Load links state - end ---------------------------------------------


  Header("Content-type: image/png");
  $im = ImageCreate($image_xsize, $image_ysize);

  $im_white = ImageColorAllocate($im, 255, 255, 255);
  $im_black = ImageColorAllocate($im,   0,   0,   0);

  $im_gray1    = ImageColorAllocate($im, 140, 140, 140);
  $im_gray2    = ImageColorAllocate($im, 180, 180, 180);
  $im_gray3    = ImageColorAllocate($im, 200, 200, 200);
  $im_gray4    = ImageColorAllocate($im, 220, 220, 220);
  $im_gray5    = ImageColorAllocate($im, 240, 240, 240);
  $im_red      = ImageColorAllocate($im, 255,   0,   0);
  $im_green    = ImageColorAllocate($im,   0, 255,   0);
  $im_blue     = ImageColorAllocate($im,   0,   0, 255);
  $im_red2     = ImageColorAllocate($im, 180,   0,   0);
  $im_green2   = ImageColorAllocate($im,   0, 180,   0);
  $im_blue2    = ImageColorAllocate($im,   0,   0, 180);
  $im_magenta2 = ImageColorAllocate($im, 180,   0, 180);
  $im_yellow2  = ImageColorAllocate($im, 180, 180,   0);
  $im_wblue2   = ImageColorAllocate($im,   0, 180, 180);
  $im_red3     = ImageColorAllocate($im, 255, 140, 140);
  $im_green3   = ImageColorAllocate($im, 140, 255, 140);
  $im_blue3    = ImageColorAllocate($im, 140, 140, 255);

  ImageRectangle($im, 0, 0, ($image_xsize-1), ($image_ysize-1), $im_black);
  ImageFilledRectangle($im, 1, 1, ($image_xsize-2), 15, $im_black);
  ImageString($im, 3, 5, 1, $image_title, $im_white);
  ImageString($im, 2, ($image_xsize-ImageFontWidth(2)*strlen($image_date)-5), 1, $image_date, $im_gray4);
  ImageStringUp($im, 1, ($image_xsize-10), ($image_ysize-5), $calstats_id . " " . $calstats_version, $im_gray2);

  // Place links
  if ($link_show == 1) {
    for ($i1 = 0; ($i1 < $link_num); $i1++) {
      if ($a_link[$i1][3] == 0) {
        $l_pat = return_link_str1($a_link[$i1][0]);
        $a_link[$i1][3] = 1;

        $i_l1 = return_ap_index($a_comp, $comp_num, $a_link[$i1][1]);
        $i_l2 = return_ap_index($a_comp, $comp_num, $a_link[$i1][2]);

        for ($i2 = ($i1 + 1); ($i2 < $link_num); $i2++) {
          $i_l3_tmp = return_ap_index($a_comp, $comp_num, $a_link[$i2][1]);
          $i_l4_tmp = return_ap_index($a_comp, $comp_num, $a_link[$i2][2]);
          if ( (($i_l1 == $i_l3_tmp) && ($i_l2 == $i_l4_tmp))
            || (($i_l1 == $i_l4_tmp) && ($i_l2 == $i_l3_tmp)) ) {
            $l_pat = $l_pat . "----" . return_link_str1($a_link[$i2][0]);
            $a_link[$i2][3] = 1;
          }
        }

        placeLN($im, $a_comp[$i_l1][3], $a_comp[$i_l1][4], $a_comp[$i_l2][3], $a_comp[$i_l2][4], $l_pat);
      }
    }
  }

  // Place computers
  for ($i1=0; ($i1 < $comp_num); $i1++) {
    $comp_tmp1 = return_ip_state($a_state, $state_num, 0, $a_comp[$i1][1]);
    $comp_tmp2 = return_ip_state($a_state, $state_num, 1, $a_comp[$i1][1]);
    if ($a_comp[$i1][1] == "127.0.0.1") {
      $comp_tmp1 = 2;
      $comp_tmp2 = 0;
    }

    placeAP($im, $a_comp[$i1][3], $a_comp[$i1][4], $a_comp[$i1][0], $a_comp[$i1][1], $a_comp[$i1][2], $comp_tmp1, $comp_tmp2);
  }

  // Draw legend
  if ( ($legend_show == 1) && ($image_legend != 0) ) {
    $l_num_string = 0;
    for ($i1 = 0; ($i1 < $legend_num); $i1++) {
      if (strlen($a_legend[$i1][1]) > $l_num_string) {
        $l_num_string = strlen($a_legend[$i1][1]);
      }
    }

    if ( ($image_legend == 1) || ($image_legend == 3) ) { $l_xloc = 12; } else { $l_xloc = ($image_xsize-37-($l_num_string*ImageFontWidth(2))); }
    if ( ($image_legend == 1) || ($image_legend == 2) ) { $l_yloc = 27; } else { $l_yloc = ($image_ysize-12-($legend_num*15)); }

    ImageRectangle($im, $l_xloc, ($l_yloc-2), ($l_xloc+25+($l_num_string*ImageFontWidth(2))), ($l_yloc + ($legend_num*15) + 1), $im_gray3);
    ImageFilledRectangle($im, ($l_xloc+1), ($l_yloc-1), ($l_xloc+24+($l_num_string*ImageFontWidth(2))), ($l_yloc + ($legend_num*15)), $im_gray5);

    for ($i1 = 0; ($i1 < $legend_num); $i1++) {
      placeLN($im, ($l_xloc+5), ($l_yloc+7), ($l_xloc+15), ($l_yloc+7), return_link_str1($a_legend[$i1][0]), 2);
      ImageString($im, 2, ($l_xloc+20), ($l_yloc), $a_legend[$i1][1], $im_black);
      $l_yloc+=15;
    }
  }

  ImagePng ($im);
  ImageDestroy($im);

?>