Implements an image recognition captcha.

"; break; case 'admin/modules#description': case 'admin/modules/textimage': case 'admin/textimage': $output = t('Implements an image recognition captcha.'); break; } return $output; } function textimage_captchachallenge(&$form) { $form['captcha_response'] = array ( '#type' => 'textfield', '#title' => t('Captcha Validation'), '#default_value' => '', '#required' => TRUE, '#validate' => array('_captcha_validate' => array()), '#description' => t('Please type in the letters/numbers that are shown in the image above.'), '#prefix' => 'Captcha Image: you will need to recognize the text in it.', ); return $form; } function textimage_captchavalidate(&$captcha_word, &$correct) { $captcha_word = drupal_strtolower($captcha_word); if (($_SESSION['captcha'] != '') && $captcha_word == $_SESSION['captcha']) { $correct = true; } else { $correct = false; form_set_error('captcha_response', t('The image verification code you entered is incorrect.')); } } /** * Implementation of hook_menu(). */ function textimage_menu($may_cache) { $items = array(); $suffix = ''; if (arg(2)!=null) $suffix='/'.arg(2); $items[] = array( 'path' => '_textimage/image'.$suffix, 'title' => t('textimage'), 'callback' => '_textimage_image', 'access' => user_access('access textimages'), 'type' => MENU_CALLBACK ); return $items; } function textimage_perm() { return array('access textimages'); } function textimage_settings() { $fonts_path = variable_get("textimage_fonts_path", ""); $images_path = variable_get("textimage_images_path", ""); //check for GD if (!function_exists(imagecreate)) drupal_set_message(t('Image library not available. Textimage needs the GD library extension to be installed. Please install GD.')); //check for TTF support elseif (!function_exists(imagettftext)) drupal_set_message(t('Your image library does not seem to have TrueType font support. Textimage will work, but will use the default inbuilt font.'),'status'); //check for valid font path elseif ($fonts_path!="" && !is_dir($fonts_path)) drupal_set_message(t('The current font path is invalid. The default font will be used.')); //check for valid image path if ($images_path!="" && !is_dir($images_path)) drupal_set_message(t('The current images path is invalid. No images will be used.')); //Fonts settings $form['fonts'] = array( '#type' => 'fieldset', '#title' => t('Fonts settings'), '#collapsible' => TRUE, '#collapsed' => FALSE ); $form['fonts']['textimage_use_only_upper'] = array( '#type' => 'checkbox', '#title' => t('Use only Uppercase'), '#default_value' => variable_get('textimage_use_only_upper',0) ); $form['fonts']['textimage_fonts_path'] = array( '#type' => 'textfield', '#title' => t('TrueType Fonts Path'), '#default_value' => $fonts_path, '#size' => 30, '#maxlength' => 255, '#description' => t('Location of the directory where the Truetype (.ttf) fonts are stored. If you do not provide any fonts, the module will use the default font for text. Relative paths will be resolved relative to the Drupal installation directory.'), ); $form['fonts']['textimage_font_size'] = array( '#type' => 'textfield', '#title' => t('Font Size'), '#default_value' => variable_get('textimage_font_size',24), '#size' => 5, '#maxlength' => 2, '#description' => t('Font size of Captcha text (in pixels).'), '#validate' => array("_textimage_number_validate" => array("textimage_font_size")), ); $form['fonts']['textimage_char_spacing_max'] = array( '#type' => 'textfield', '#title' => t('Character Spacing'), '#default_value' => variable_get('textimage_char_spacing_max',10), '#size' => 5, '#maxlength' => 4, '#description' => t('Sets the kerning between letters in Captcha. Higher numbers indicate more spacing.'), '#validate' => array("_textimage_number_validate" => array("textimage_char_spacing_max")), ); $form['fonts']['textimage_char_jiggle_amount'] = array( '#type' => 'textfield', '#title' => t('Character Jiggle'), '#default_value' => variable_get('textimage_char_jiggle_amount',5), '#size' => 5, '#maxlength' => 2, '#description' => t('Sets the amount of up and down movement in the Captcha letters. Higher numbers indicate more jiggling.'), '#validate' => array("_textimage_number_validate" => array("textimage_char_jiggle_amount")), ); $form['fonts']['textimage_char_rotate_amount'] = array( '#type' => 'textfield', '#title' => t('Character Rotation'), '#default_value' => variable_get('textimage_char_rotate_amount',5), '#size' => 5, '#maxlength' => 2, '#description' => t('Sets the amount of rotation in the Captcha letters (in degrees, only works with non-default fonts).'), '#validate' => array("_textimage_number_validate" => array("textimage_char_rotate_amount")), ); $form['fonts']['textimage_char_size_amount'] = array( '#type' => 'textfield', '#title' => t('Character Size Adjustment'), '#default_value' => variable_get('textimage_char_size_amount',2), '#size' => 5, '#maxlength' => 2, '#description' => t('Sets the amount of variation in size between the different letters in the Captcha (in pixels).'), '#validate' => array("_textimage_number_validate" => array("textimage_char_size_amount")), ); //Image settings $form['images'] = array( '#type' => 'fieldset', '#title' => t('Image settings'), '#collapsible' => TRUE, '#collapsed' => FALSE ); $form['images']['textimage_images_path'] = array( '#type' => 'textfield', '#title' => t('Background Images Path'), '#default_value' => $images_path, '#size' => 30, '#maxlength' => 255, '#description' => t('Location of the directory where the background images are stored. If you do not provide a directory, solid colors will be used. Relative paths will be resolved relative to the Drupal installation directory.'), ); $form['images']['textimage_image_noise'] = array( '#type' => 'textfield', '#title' => t('Image Noise (pixels)'), '#default_value' => variable_get('textimage_image_noise',4), '#size' => 5, '#maxlength' => 4, '#description' => t('Sets the amount of noise (random pixels) in the Captcha image. Higher numbers indicate more noise.'), '#validate' => array("_textimage_number_validate" => array("textimage_image_noise")), ); $form['images']['textimage_image_lines'] = array( '#type' => 'textfield', '#title' => t('Image Noise (lines)'), '#default_value' => variable_get('textimage_image_lines',4), '#size' => 5, '#maxlength' => 4, '#description' => t('Sets the amount of noise (random lines) in the Captcha image. Higher numbers indicate more noise.'), '#validate' => array("_textimage_number_validate" => array("textimage_image_lines")), ); $form['images']['textimage_image_margin'] = array( '#type' => 'textfield', '#title' => t('Image Margin'), '#default_value' => variable_get('textimage_image_margin',10), '#size' => 5, '#maxlength' => 4, '#description' => t('Set a distance between the Captcha letters and the edges of the image.'), '#validate' => array("_textimage_number_validate" => array("textimage_image_margin")), ); $form['info'] = array( '#type' => 'fieldset', '#title' => t('Image and font information'), '#collapsible' => TRUE, '#collapsed' => FALSE ); if (isset($fonts_path)) { $imagefontinfo .= t('Number of fonts found: ').count(_textimage_font_list()); } if (isset($images_path)) { $imagefontinfo .= '
'.t('Number of background images found: ').count(_textimage_image_list()); } $gdinfo = gd_info(); $imagefontinfo .= '
'.t('GD Version: ').$gdinfo["GD Version"]; $imagefontinfo .= '
'.t(' FreeType Support: '); $imagefontinfo .= ($gdinfo["FreeType Support"]==true) ? 'True' : 'False'; $imagefontinfo .= '
'; $form['info']['captcha_info'] = array ( '#type' => 'item', '#value' => $imagefontinfo, ); return $form; } function textimage_settings_form_validate ($form_id,$form) { //check for valid font path if ($form['textimage_fonts_path'] !="" && !is_dir($form['textimage_fonts_path'])) form_set_error('textimage_fonts_path', t('The entered font path is invalid')); //check for valid image path if ($form['textimage_images_path'] !="" && !is_dir($form['textimage_images_path'])) form_set_error('textimage_images_path', t('The entered image path is invalid')); } function _textimage_number_validate ($field,$fieldName) { if (!is_numeric($field['#value'])) { form_set_error($fieldName,t("The value for")." ".t($field['#title'])." ".t("must be a number")); } } /** * Prints an image containing a textimage code. */ function _textimage_image() { //if we don't have GD2 functions, we can't generate the image if (!function_exists('imagecreatetruecolor')) return; // Set headers header('Expires: Mon, 01 Jan 1997 05:00:00 GMT'); header('Cache-Control: no-store, no-cache, must-revalidate'); header('Cache-Control: post-check=0, pre-check=0', false); header('Pragma: no-cache'); header('Content-type: image/png'); $string = _textimage_code(); // Get truetype font list $fonts = _textimage_font_list(); // Get the background images list $images = _textimage_image_list(); // Randomization amounts: $charSpacingMax = variable_get('textimage_char_spacing_max',10); // Letter spacing max (pixels) $charSpacingMin = max($charSpacingMax*.5,0); // Letter spacing minimum (pixels) $charJiggleAmount = variable_get('textimage_char_jiggle_amount',5); // Up and down randomization (pixels) $charRotateAmount = variable_get('textimage_char_rotate_amount',5); // Character rotation amount (degrees) $charSizeAmount = variable_get('textimage_char_size_amount',2); // Character size amount (pixels) $imageRotateAmount = variable_get('captcha_image_rotate_amount',12); // Image rotation amount (degrees) // Static amounts: $charInitialSize = variable_get('textimage_font_size',24); // Initial Font $imageNoise = variable_get('textimage_image_noise',4); // Amount of noise added to image $imageLines = variable_get('textimage_image_lines',4); // Amount of noise added to image $imageMargin = variable_get('textimage_image_margin',10); // Margin around image (pixels) // write text using a truetype font if (function_exists(imagettftext) && count($fonts) > 0) { // Initialize variables for the loop $characterDetails = array(); // contains the final info about each character // Build a list of character settings for the captcha string for ($i=0;$i $charSize, "angle" => $charAngle, "x" => $x, "y" => $y, "color" => $foreground, "font" => $font, "char" => $char ); // Increment the image size $imageWidth = $x + $charWidth; $imageHeight = max($imageHeight,$y+$charJiggleAmount); } // Create the image based off the string length and margin if (count($images) > 0) { // We're going to be using an image, and need a tranparent background to start with $im = _textimage_create_transparent_image($imageWidth+2*$imageMargin, $imageHeight+2*$imageMargin); $noisecolor = imagecolorallocatealpha($im, 0, 0, 0, 127); } else { // Just make a plain-jane color brackground $im = imagecreatetruecolor($imageWidth+2*$imageMargin, $imageHeight+2*$imageMargin); $background = imagecolorallocate($im, rand(180, 250), rand(180, 250), rand(180, 250)); $noisecolor = $background; imagefill($im, 0, 0, $background); } // Specify colors to be used in the image $foreground = imagecolorallocate($im, rand(0, 80), rand(0, 80), rand(0, 80)); foreach($characterDetails as $char) { // draw character imagettftext($im,$char['size'],$char['angle'],$char['x']+$imageMargin,$char['y']+$imageMargin,$foreground,$char['font'],$char['char']); } } else { // write text using a built-in font $x = 0; $y = 0; $imageWidth = 60 + drupal_strlen($string)*$charSpacingMax*.35; $imageHeight = 30 + $charJiggleAmount; // Create the image if (count($images) > 0 && function_exists(imagecolorallocatealpha)) { // We're going to be using an image, and need a tranparent background to start with $im = _textimage_create_transparent_image($imageWidth, $imageHeight); $noisecolor = imagecolorallocatealpha($im, 0, 0, 0, 127); } else { // Just make a plain-jane color brackground $im = imagecreatetruecolor($imageWidth, $imageHeight); $background = imagecolorallocate($im, rand(180, 250), rand(180, 250), rand(180, 250)); $noisecolor = $background; imagefill($im, 0, 0, $background); } // Add the text for ($i=0;$i 0) { // Prepare a larger image with a background image $im2 = _textimage_create_transparent_image($imageWidth, $imageHeight); } else { // Prepare a larger image with a solid color $im2 = imagecreatetruecolor($imageWidth, $imageHeight); imagefill($im2, 0, 0, $background); } $result = imagecopyresampled ($im2, $im, $imageMargin, $imageMargin, 0, 0, $imageWidth, $imageHeight, imagesx($im), imagesy($im)); $im = $im2; } // strikethrough imageline($im, rand(0, 120), rand(0, 120), rand(0, 120), rand(0, 120), $foreground); // Add Noise for ($x=0; $x<$imageWidth; $x++) { for ($row=0; $row<$imageNoise;$row++) { $y = rand(0,$imageHeight); imagesetpixel($im, $x, $y, $noisecolor); } } // Add Lines and Ellipses for ($x=0; $x<$imageLines;$x++) { imageline($im, rand(0, $imageWidth), rand(0, $imageHeight), rand(0, $imageWidth), rand(0, $imageHeight), $noisecolor); imageellipse($im, rand(0, $imageWidth), rand(0, $imageHeight), rand(0, $imageWidth), rand(0, $imageHeight), $noisecolor); } // Fill image with a random background image if available if (count($images) > 0) { $image = $images[rand(0,count($images)-1)]; _textimage_apply_background_image($im,$image); } //output to browser imagepng($im); imagedestroy($im); } /** * Returns a random string for use in a captcha */ function _textimage_code() { $consts='bcdgjxvmnprst'; $vowels='aeiou'; for ($x=0; $x < 6; $x++) { mt_srand ((double) microtime() * 1000000); $const[$x] = drupal_substr($consts,mt_rand(0,drupal_strlen($consts)-1),1); $vow[$x] = drupal_substr($vowels,mt_rand(0,drupal_strlen($vowels)-1),1); } $string = $const[0] . $vow[0] .$const[2] . $const[1] . $vow[1] . $const[3] . $vow[3] . $const[4]; $string = drupal_substr($string,0,rand(4,6)); //everytime we create a new code, we write it to session $_SESSION['captcha'] = drupal_strtolower($string); if(variable_get('textimage_use_only_upper',0)) $string = drupal_strtoupper($string); return $string; } /** * Returns an array of files with TTF extensions in the specified directory. */ function _textimage_font_list() { $fontdir = variable_get("textimage_fonts_path", ""); $filelist = array(); if (is_dir($fontdir) && $handle = opendir($fontdir)) { while ($file = readdir($handle)) { if (preg_match("/\.ttf$/i",$file) == 1) $filelist[] = $fontdir.'/'.$file; } closedir($handle); } return $filelist; } /** * Returns an array of files with jpg, png, and gif extensions in the specified directory. */ function _textimage_image_list() { $imagesdir = variable_get("textimage_images_path", ""); $filelist = array(); if (is_dir($imagesdir) && $handle = opendir($imagesdir)) { while ($file = readdir($handle)) { if (preg_match("/\.gif|\.png|\.jpg$/i",$file) == 1) $filelist[] = $imagesdir.'/'.$file; } closedir($handle); } return $filelist; } /** * Overlays an image to the supplied image resource */ function _textimage_apply_background_image (&$imageResource,$imageFile) { $backgroundResource = image_gd_open($imageFile,substr($imageFile,-3)); // Copy the text onto the background $backX = imagesx($backgroundResource); $backY = imagesy($backgroundResource); $textX = imagesx($imageResource); $textY = imagesy($imageResource); $randomBackX = rand(0,$backX-$textX); $randomBackY = rand(0,$backY-$textY); // Place the text onto a random location of the background image imagecopyresampled($backgroundResource,$imageResource,$randomBackX,$randomBackY,0,0,$textX,$textY,$textX,$textY); // Crop the background image to the original image size imagecopyresampled($imageResource,$backgroundResource,0,0,$randomBackX,$randomBackY,$textX,$textY,$textX,$textY); } /** * Creates transparent image resources for images with graphic backgrounds */ function _textimage_create_transparent_image($x, $y) { $i = imagecreatetruecolor($x, $y); $b = imagecreatefromstring(base64_decode(_text_image_blankpng())); imagealphablending($i, false); imagesavealpha($i, true); imagecopyresized($i, $b ,0 ,0 ,0 ,0 ,$x, $y, imagesx($b), imagesy($b)); return $i; } function _text_image_blankpng() { $c = "iVBORw0KGgoAAAANSUhEUgAAACgAAAAoCAYAAACM/rhtAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29m"; $c .= "dHdhcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAADqSURBVHjaYvz//z/DYAYAAcTEMMgBQAANegcCBNCg"; $c .= "dyBAAA16BwIE0KB3IEAADXoHAgTQoHcgQAANegcCBNCgdyBAAA16BwIE0KB3IEAADXoHAgTQoHcgQAAN"; $c .= "egcCBNCgdyBAAA16BwIE0KB3IEAADXoHAgTQoHcgQAANegcCBNCgdyBAAA16BwIE0KB3IEAADXoHAgTQ"; $c .= "oHcgQAANegcCBNCgdyBAAA16BwIE0KB3IEAADXoHAgTQoHcgQAANegcCBNCgdyBAAA16BwIE0KB3IEAA"; $c .= "DXoHAgTQoHcgQAANegcCBNCgdyBAgAEAMpcDTTQWJVEAAAAASUVORK5CYII="; return $c; } ?> oellermann.com

  • warning: Creating default object from empty value in /var/www/oellermann/modules/spam/spam.module on line 488.
  • : preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /var/www/oellermann/includes/unicode.inc on line 291.

This is what we get for pushing God out of our lives.

The following was written by Ben Stein and recited by him on CBS Sunday
Morning

Commentary.

My confession:

I am a Jew, and every single one of my ancestors was Jewish. And it does
not bother me even a little bit when people call those beautiful lit up,
bejeweled trees, Christmas trees.. I don't feel threatened. I don't feel
discriminated against. That's what they are: Christmas trees.

It doesn't bother me a bit when people say, 'Merry Christmas' to me. I
don't think they are slighting me or getting ready to put me in a ghetto.
In fact, I kind of like it It shows that we are all brothers and sisters
celebrati ng this happy time of year. It doesn't bother me at all that there
is a manger scene on display at a key intersection near my beach house in
Malibu . If people want a cr?che, it's just as fine with me as is the
Menorah a few hundred yards away.

I don't like getting pushed around for being a Jew, and I don't think
Christians like getting pushed around for being Christians. I think people
who believe in God are sick and tired of getting pushed around, period. I
have no idea where the concept came from that America is an explicitly
atheist country. I can't find it in the Constitution and I don't like it
being shoved down my throat.

Or maybe I can put it another way: where did the idea come from that we
should worship celebrities and we aren't allowed to worship God as we
understand Him? I guess that's a sign that I'm getting old, too. But
there are a lot of us who are wondering where these celebrities came from
and where the America we knew went to.

In light of the many jokes we send to one another for a laugh, this is a
little different: This is not intended to be a joke; it's not funny, it's
intended to get you thinking.

Billy Graham's daughter was interviewed on the Early Show and Jane Clayson
asked her 'How could God let something like this happen?' (regarding
Katrina) Anne Graham gave an extremely profound and insightful response.
She said, 'I believe God is deeply saddened by this, just as we are, but for
years we've been telling God to get out of our schools, to get out of our
government and to get out of our lives. And being the gentleman He is, I
believe He has calmly backed out. How can we expect God to give us His
blessing and His protection if we demand He leave us alone?'

In light of recent events... terrorists attack, school shootings, etc. I
think it started when Madeleine Murray O'Hare (she was murdered, her body
found a few years ago) complained she didn't want prayer in our schools, and
we said OK. Then someone said you better not read the Bible in school. The
Bible says thou shalt not kill, thou shalt not steal, and love your neighbor
as yourself. And we said OK.

Then Dr. Benjamin Spock said we shouldn't spank our children when they
misbehave because their little personalities would be warped and we might
damage their self-esteem (Dr Spock's son committed suicide). We said an
expert should know what he's talking about. And we said OK.

Now we're asking ourselves why our children have no conscience, why they
don't know right from wrong, and why it doesn't bother them to kill
strangers, their classmates, and themselves.

Probably, if we think about it long and hard enough, we can figure it out.
I think it has a great deal to do with 'WE REAP WHAT WE SOW.'

Funny how simple it is for people to trash God and then wonder why the
world's going to hell Funny how we believe what the newspapers say, but
question what the Bible says. Funny how you can send 'jokes' through e-mail
and they spread like wildfire but when you start sending messages regarding
the Lord, people think twice about sharing. Funny how lewd, crude, vulgar
and obscene articles pass freely through cyberspace, but public discussion
of God is suppressed in the school and workplace.

Are you laughing yet?

Funny how when you forward this message, you will not send it to many on

your address list because you're not sure what they believe, or what they

will think of you for sending it.

Funny how we can be more worried about what other people think of us than
what God thinks of us.

Pass it on if you think it has merit. If not then just discard it... no one
will know you did. But, if you discard this thought process, don't sit back
and complain about what bad shape the world is in.

My Best Regards, Honestly and respectfully,

Ben Stein


Reply

  • Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <p> <br> <h1> <h2> <h3>
  • Lines and paragraphs break automatically.
  • You may use [acidfree:xx] tags to display acidfree videos or images inline.
  • Images can be added to this post.
More information about formatting options