./sources/ipsclass.php

function show_gd_img($content="")
{
 $content = '  '. preg_replace( "/(\w)/", "\\1 ", $content ) .' ';
 
 @header("Content-Type: image/jpeg");
 
 $tmp_x = 140;
 $tmp_y = 20;
 
 $image_x = 210;
 $image_y = 65;
 
 $circles = 3;
 
 if ( $this->vars['gd_version'] == 1 )
 {
  $tmp = imagecreate($tmp_x, $tmp_y);
  $im  = imagecreate($image_x, $image_y);
 }
 else
 {
  $tmp = imagecreatetruecolor($tmp_x, $tmp_y);
  $im  = imagecreatetruecolor($image_x, $image_y);
 }
 
 $white  = ImageColorAllocate($tmp, 255, 255, 255);
 $black  = ImageColorAllocate($tmp, 0, 0, 0);
 $grey   = ImageColorAllocate($tmp, 210, 210, 210 );
 
 imagefill($tmp, 0, 0, $white);
 
 for ( $i = 1; $i <= $circles; $i++ )
 {
  $values = array(
      0  => rand(0, $tmp_x - 10),
      1  => rand(0, $tmp_y - 3),
      2  => rand(0, $tmp_x - 10),
      3  => rand(0, $tmp_y - 3),
      4  => rand(0, $tmp_x - 10),
      5  => rand(0, $tmp_y - 3),
      6  => rand(0, $tmp_x - 10),
      7  => rand(0, $tmp_y - 3),
      8  => rand(0, $tmp_x - 10),
      9  => rand(0, $tmp_y - 3),
      10 => rand(0, $tmp_x - 10),
      11 => rand(0, $tmp_y - 3),
      );
 
  $randomcolor = imagecolorallocate( $tmp, rand(100,255), rand(100,255),rand(100,255) );
  imagefilledpolygon($tmp, $values, 6, $randomcolor );
 }

 imagestring($tmp, 5, 0, 2, $content, $black);
 
 //-----------------------------------------
 // Distort by resizing
 //-----------------------------------------
 
 imagecopyresized($im, $tmp, 0, 0, 0, 0, $image_x, $image_y, $tmp_x, $tmp_y);
 
 imagedestroy($tmp);
 
 $white   = ImageColorAllocate($im, 255, 255, 255);
 $black   = ImageColorAllocate($im, 0, 0, 0);
 $grey = ImageColorAllocate($im, 100, 100, 100 );
 
 $random_pixels = $image_x * $image_y / 10;
 
 for ($i = 0; $i < $random_pixels; $i++)
 {
  ImageSetPixel($im, rand(0, $image_x), rand(0, $image_y), $black);
 }
 
 $no_x_lines = ($image_x - 1) / 5;
 
 for ( $i = 0; $i <= $no_x_lines; $i++ )
 {
  // X lines
 
  ImageLine( $im, $i * $no_x_lines, 0, $i * $no_x_lines, $image_y, $grey );
 
  // Diag lines
 
  ImageLine( $im, $i * $no_x_lines, 0, ($i * $no_x_lines)+$no_x_lines, $image_y, $grey );
 }
 
 $no_y_lines = ($image_y - 1) / 5;
 
 for ( $i = 0; $i <= $no_y_lines; $i++ )
 {
  ImageLine( $im, 0, $i * $no_y_lines, $image_x, $i * $no_y_lines, $grey );
 }
 
 ImageJPEG($im);
 ImageDestroy($im);
 
 exit();
}

function show_gd_img($content="")
{
 $content = preg_replace( "/(\w)/", "\\1 ", $content );

 $textarray = explode(' ', $content);

 //---------------------------
 // Options
 //---------------------------
 $super_captcha = 0;   // One of the stronger Captcha Avalible through this mod

 $use_jpg = 0;    // Only turn this off if you dont want to use JPG backgrounds, if none are uploaded this has no effect
 $use_ttf = 1;    // Use TTF fonts, if none are uploaded this has no effect
 $use_gdf = 0;    // Use GDF fonts, TTF fonts will take preferance, if none are uploaded this has no effect

 $fonts_dir = ROOT_PATH.'fonts/'; // The directory were all fonts and jpgs are uploaded to

 //---------------------------
 // No More Options to play with
 //---------------------------

 $tmp_x = 160;
 $tmp_y = 30;
 
 $image_x = 210;
 $image_y = 65;
 
 $circles = 3;

 //-----------------------------
 // Get information from folder
 //-----------------------------
 $dh = opendir( $fonts_dir );
 $fonts = array();
 while ($icon = readdir($dh)) {
  if(preg_match("/(.gdf)/",$icon) && $use_gdf) {
   if($icon != '.' || $icon  != '..') {
    $gdf_fonts[] = $icon;
   }
  }
  if(preg_match("/(.ttf)/",$icon) && $use_ttf) {
   if($icon != '.' || $icon  != '..') {
    $ttf_fonts[] = $icon;
   }
  }
  if(preg_match("/(.jpg)/",$icon) && $use_jpg) {
   if($icon != '.' || $icon  != '..') {
    $jpg_files[] = $icon;
   }
  }
 }
 closedir($dh);
 
 $jpg_max = count($jpg_files) - 1;
 $gdf_max = count($gdf_fonts) - 1;
 $ttf_max = count($ttf_fonts) - 1;

 @header("Content-Type: image/jpeg");
   
 if ( $this->vars['gd_version'] == 1 ) {
  $tmp = imagecreate($tmp_x, $tmp_y);
  $im  = imagecreate($image_x, $image_y);
 } else {
  $tmp = imagecreatetruecolor($tmp_x, $tmp_y);
  $im  = imagecreatetruecolor($image_x, $image_y);
 }

 //------------------------------
 // Super Captcha
 //------------------------------
 if($super_captcha) {
  $color1 = rand(100,200);
  $color2 = rand(100,200);
  $color3 = rand(100,200);

  $color = imageColorAllocate($tmp, $color1, $color2, $color3);
  $textcolor = imageColorAllocate($tmp, $color1 - 10, $color2 - 10, $color3 - 10);

  imagefill($tmp, 0, 0, $color);

  $shadowcode = rand(20, 50);
  $shadowcolor = ImageColorAllocate($tmp, $color1 - 100, $color2 - 100, $color3 - 100 );

  foreach($textarray AS $number) {

   $rand = rand(0, $ttf_max);

   // Only Slight Changes in font size and angle
   $fontsize = rand(14,17);
   $angle = rand(-10,10);

   $aCharDetails = imageftbbox($fontsize, $angle, $fonts_dir."/".$ttf_fonts[$rand], $number);
   
   $iCharHeight = $aCharDetails[2] - $aCharDetails[5];
   $iY = $tmp_y / 2 + $iCharHeight / 4 + rand(-3, 3);

   $rand = rand(0, $ttf_max);

   $offsetx = 2;
   $offsety = 2;
     
   imagefttext($tmp, $fontsize, $angle, $i + $offsetx, $iY + $offsety, $shadowcolor, $fonts_dir."/".$ttf_fonts[$rand], $number);
   
   imagefttext($tmp, $fontsize, $angle, $i, $iY, $textcolor, $fonts_dir."/".$ttf_fonts[$rand], $number);

   $i = $i + rand(20, 45 - $fontsize);
  }
 }else {
  if(count($jpg_files) > 0) {
   $rand = rand(0, $jpg_max);
   $temp = imagecreatefromjpeg($fonts_dir."/".$jpg_files[$rand]);
   list($width, $height) = getimagesize($fonts_dir."/".$jpg_files[$rand]);

   imagecopyresized($tmp, $temp, 0, 0, 0, 0, $tmp_x, $tmp_y, $width, $height);
  }else{
   imagefill($tmp, 0, 0, ImageColorAllocate($tmp, rand(240,250), rand(240,250), rand(240,250)));

   for ( $i = 1; $i <= $circles; $i++ )
   {
    $values = array(
        0  => rand(0, $tmp_x - 10),
        1  => rand(0, $tmp_y - 3),
        2  => rand(0, $tmp_x - 10),
        3  => rand(0, $tmp_y - 3),
        4  => rand(0, $tmp_x - 10),
        5  => rand(0, $tmp_y - 3),
        6  => rand(0, $tmp_x - 10),
        7  => rand(0, $tmp_y - 3),
        8  => rand(0, $tmp_x - 10),
        9  => rand(0, $tmp_y - 3),
        10 => rand(0, $tmp_x - 10),
        11 => rand(0, $tmp_y - 3),
        );
   
    $randomcolor = imagecolorallocate( $tmp, rand(150,200), rand(150,200),rand(150,200) );
    imagefilledpolygon($tmp, $values, 6, $randomcolor );
   }
  }
 
  if(count($textarray) == 5) {
   $min = 30;
   $max = 40;
  }else if(count($textarray) == 6) {
   $min = 20;
   $max = 30;
  }else{
   $min = 2;
   $max = 10;
  }

  $i = rand($min, $max);
  foreach($textarray AS $number) {
   $color = ImageColorAllocate($tmp, rand(50, 150), rand(50, 150), rand(50, 150) );
   $shadowcolor = ImageColorAllocate($tmp, rand(50, 100), rand(50, 100), rand(50, 100) );

   if(count($ttf_fonts) > 0) {
    $rand = rand(0, $ttf_max);

    $fontsize = rand(18, 20);
    $angle = rand(-30, 30);

    $aCharDetails = imageftbbox($fontsize, $angle, $fonts_dir."/".$ttf_fonts[$rand], $number);
   
    $iCharHeight = $aCharDetails[2] - $aCharDetails[5];
    $iY = $tmp_y / 2 + $iCharHeight / 4 + rand(-3, 3);

    $rand = rand(0, $ttf_max);

    $offsetx = rand(1, 2);
    $offsety = rand(1, 2);
     
    imagefttext($tmp, $fontsize, $angle, $i + $offsetx, $iY + $offsety, $shadowcolor, $fonts_dir."/".$ttf_fonts[$rand], $number);
   
    imagefttext($tmp, $fontsize, $angle, $i, $iY, $color, $fonts_dir."/".$ttf_fonts[$rand], $number);

    $i = $i + rand(20, 45 - $fontsize);
   }else{
    if(count($gdf_fonts) > 0) {
     $rand = rand(0, $gdf_max);
     $font = imageloadfont($fonts_dir."/".$gdf_fonts[$rand]);
    }else{
     $font = rand(15,20);
    }

    $height = rand(0, 10);

    $offsetx = rand(1, 2);
    $offsety = rand(1, 2);

    imagestring($tmp, $font, $i + $offsetx, $height + $offsety, $number, $shadowcolor);

    imagestring($tmp, $font, $i, $height, $number, $color);

    $i = $i + rand(20, 30);
   }
  }
 }

 //-----------------------------------------
 // Distort by resizing
 //-----------------------------------------
 
 imagecopyresized($im, $tmp, 0, 0, 0, 0, $image_x, $image_y, $tmp_x, $tmp_y);
 
 imagedestroy($tmp);

 if($super_captcha) {
  $grey = $shadowcolor;
 }else{
  $random = rand(0,20);
  $grey = ImageColorAllocate($im, $random, $random, $random );
 }

 
 $random_pixels = $image_x * $image_y / 10;

 for ($i = 0; $i < $random_pixels; $i++) {
  $random = rand(0, 255);
  $pixelcolor = ImageColorAllocate($im, $random, $random, $random );
  ImageSetPixel($im, rand(0, $image_x), rand(0, $image_y), $pixelcolor);
 }
 
 $no_x_lines = ($image_x - 1) / 10;
 
 for ( $i = 0; $i <= $no_x_lines; $i++ ) {
  ImageLine( $im, $i * $no_x_lines, 0, $i * $no_x_lines, $image_y, $grey );
 }
 
 $no_y_lines = ($image_y - 1) / 5;
 
 for ( $i = 0; $i <= $no_y_lines; $i++ ) {
  ImageLine( $im, 0, $i * $no_y_lines, $image_x, $i * $no_y_lines, $grey );
 }
 
 ImageJPEG($im);
 ImageDestroy($im);
 
 exit();
}