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<?php /** * @package phocaguestbook * @subpackage Helpers * @copyright Copyright (C) 2012 Jan Pavelka www.phoca.cz * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL / defined( '_JEXEC' ) or die( 'Restricted access' ); class PhocaguestbookHelperCaptchaTTF { public static function createImageData() { $rand_char = PhocaguestbookHelperCaptchaTTF::generateRandomChar(6); $image_name = PhocaguestbookHelperCaptchaTTF::getRandomImage(); $image = @imagecreatefromjpeg($image_name); $ttf[0] = JPATH_COMPONENT . '/assets/captcha/fonts/essai.ttf'; // $ttf[1] = JPATH_COMPONENT . '/assets/captcha/fonts/vera.ttf'; $ttf[1] = JPATH_COMPONENT . '/assets/captcha/fonts/justus.ttf'; $i = 15; $char_string = ''; foreach ($rand_char as $key => $value) { $font_color = PhocaguestbookHelperCaptchaTTF::getRandomFontColor(); $position_x = PhocaguestbookHelperCaptchaTTF::getRandomPositionX($i); $position_y = mt_rand(55,80); $font_size = mt_rand(20,40); $angle = mt_rand(-30,30); $rand_ttf = mt_rand(0,1); imagettftext($image, $font_size, $angle, $position_x, $position_y, ImageColorAllocate ($image, $font_color[0], $font_color[1], $font_color[2]), $ttf[$rand_ttf], $value); $i = $i + 37; $char_string .= $value; } $image_data['outcome'] = $char_string;//$rand_char; $image_data['image'] = $image; return $image_data; } public static function generateRandomChar($length=6) { $paramsC = JComponentHelper::getParams('com_phocaguestbook') ; $charGroup = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z'; if ($paramsC->get( 'ttf_captcha_chars' ) != '') { $charGroup = str_replace(" ", "", trim( $paramsC->get( 'ttf_captcha_chars' ) )); } $charGroup = explode( ',', $charGroup ); srand ((double) microtime() 1000000); $random_array = array(); for($i=0;$i<$length;$i++) { $random_char_group = rand(0,sizeof($charGroup)-1); $random_array[] = $charGroup[$random_char_group]; } return $random_array; } public static function getRandomImage() { $rand = mt_rand(5,8); $image = '0'.$rand.'.jpg'; $image = JPATH_ROOT.'/components/com_phocaguestbook/assets/captcha/'. $image; return $image; } public static function getRandomPositionX($i) { $rand_2 = mt_rand(-2,3); $rand_3 = $i + ($rand_2); if ((int)$i > $rand_3) { $rand = mt_rand($rand_3, $i); } else { $rand = mt_rand($i,$rand_3); } return $rand; } public static function getRandomFontColor() { $rand = mt_rand(1,6); if ($rand == 1) {$font_color[0] = 0; $font_color[1] = 20; $font_color[2] = 0;} if ($rand == 2) {$font_color[0] = 0; $font_color[1] = 0; $font_color[2] = 143;} if ($rand == 3) {$font_color[0] = 10; $font_color[1] = 102; $font_color[2] = 0;} if ($rand == 4) {$font_color[0] = 110; $font_color[1] = 58; $font_color[2] = 0;} if ($rand == 5) {$font_color[0] = 170; $font_color[1] = 0; $font_color[2] = 0;} if ($rand == 6) {$font_color[0] = 0; $font_color[1] = 93; $font_color[2] = 174;} return $font_color; } } // ================================================ class PhocaguestbookHelperCaptchaMath { public static function createImageItem($item) { switch ($item) { // 1 --------------------------------------------------------------------- case 1: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(10); $ch = $randChar['char']; $randChar['array'] = array ( " ".$ch[0]." ", " ".$ch[1].$ch[2]." ", " ".$ch[3]." ".$ch[4]." ", $ch[5]." ".$ch[6]." ", " ".$ch[7]." ", " ".$ch[8]." ", " ".$ch[9]." ", ); break; // 2 --------------------------------------------------------------------- case 2: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(14); $ch = $randChar['char']; $randChar['array'] = array ( " ".$ch[0].$ch[1].$ch[2]." ", $ch[3]." ".$ch[4], " ".$ch[5]." ", " ".$ch[6]." ", " ".$ch[7]." ", $ch[8]." ", $ch[9].$ch[10].$ch[11].$ch[12].$ch[13] ); break; // 3 --------------------------------------------------------------------- case 3: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(14); $ch = $randChar['char']; $randChar['array'] = array ( " ".$ch[0].$ch[1].$ch[2]." ", $ch[3]." ".$ch[4], " ".$ch[5], " ".$ch[6].$ch[7]." ", " ".$ch[8], $ch[9]." ".$ch[10], " ".$ch[11].$ch[12].$ch[13]." " ); break; // 4 --------------------------------------------------------------------- case 4: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(12); $ch = $randChar['char']; $randChar['array'] = array ( " ".$ch[0]." ", " ".$ch[1]." ", " ".$ch[2]." ", $ch[3]." ".$ch[4]." ", $ch[5].$ch[6].$ch[7].$ch[8].$ch[9], " ".$ch[10]." ", " ".$ch[11]." " ); break; // 5 --------------------------------------------------------------------- case 5: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(17); $ch = $randChar['char']; $randChar['array'] = array ( $ch[0].$ch[1].$ch[2].$ch[3].$ch[4], $ch[5]." ", $ch[6].$ch[7].$ch[8].$ch[9]." ", " ".$ch[10], " ".$ch[11], $ch[12]." ".$ch[13], " ".$ch[14].$ch[15].$ch[16]." " ); break; // 6 --------------------------------------------------------------------- case 6: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(16); $ch = $randChar['char']; $randChar['array'] = array ( " ".$ch[0].$ch[1].$ch[2]." ", $ch[3]." ", $ch[4]." ", $ch[5].$ch[6].$ch[7].$ch[8]." ", $ch[9]." ".$ch[10], $ch[11]." ".$ch[12], " ".$ch[13].$ch[14].$ch[15]." " ); break; // 7 --------------------------------------------------------------------- case 7: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(11); $ch = $randChar['char']; $randChar['array'] = array ( $ch[0].$ch[1].$ch[2].$ch[3].$ch[4], " ".$ch[5], " ".$ch[6], " ".$ch[7]." ", " ".$ch[8]." ", " ".$ch[9]." ", $ch[10]." " ); break; // 8 --------------------------------------------------------------------- case 8: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(17); $ch = $randChar['char']; $randChar['array'] = array ( " ".$ch[0].$ch[1].$ch[2]." ", $ch[3]." ".$ch[4], $ch[5]." ".$ch[6], " ".$ch[7].$ch[8].$ch[9]." ", $ch[10]." ".$ch[11], $ch[12]." ".$ch[13], " ".$ch[14].$ch[15].$ch[16]." " ); break; // 9 --------------------------------------------------------------------- case 9: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(16); $ch = $randChar['char']; $randChar['array'] = array ( " ".$ch[0].$ch[1].$ch[2]." ", $ch[3]." ".$ch[4], $ch[5]." ".$ch[6], " ".$ch[7].$ch[8].$ch[9].$ch[10], " ".$ch[11], " ".$ch[12], " ".$ch[13].$ch[14].$ch[15]." " ); break; // 10 + ------------------------------------------------------------------ case 10: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(9); $ch = $randChar['char']; $randChar['array'] = array ( " ", " ".$ch[0]." ", " ".$ch[1]." ", $ch[2].$ch[3].$ch[4].$ch[5].$ch[6], " ".$ch[7]." ", " ".$ch[8]." ", " " ); break; // 11 - ------------------------------------------------------------------ case 11: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(5); $ch = $randChar['char']; $randChar['array'] = array ( " ", " ", " ", $ch[0].$ch[1].$ch[2].$ch[3].$ch[4], " ", " ", " " ); break; // 12 x ------------------------------------------------------------------ case 12: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(9); $ch = $randChar['char']; $randChar['array'] = array ( " ", $ch[0]." ".$ch[1], " ".$ch[2]." ".$ch[3]." ", " ".$ch[4]." ", " ".$ch[5]." ".$ch[6]." ", $ch[7]." ".$ch[8], " " ); break; // 13 : ------------------------------------------------------------------ case 13: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(8); $ch = $randChar['char']; $randChar['array'] = array ( " ", " ".$ch[0].$ch[1]." ", " ".$ch[2].$ch[3]." ", " ", " ", " ".$ch[4].$ch[5]." ", " ".$ch[6].$ch[7]." " ); break; // 15 = ------------------------------------------------------------------ case 15: $randChar['char'] = PhocaguestbookHelperCaptchaMath::generateRandomChar(10); $ch = $randChar['char']; $randChar['array'] = array ( " ", " ", $ch[0].$ch[1].$ch[2].$ch[3].$ch[4], " ", $ch[5].$ch[6].$ch[7].$ch[8].$ch[9], " ", " " ); break; } return $randChar; } public static function createImageData() { $image_name = PhocaguestbookHelperCaptchaMath::getRandomImage(); $image = @imagecreatefromjpeg($image_name); $math = PhocaguestbookHelperCaptchaMath::getMath(); $items = array( 0 => $math['first'], 1 => $math['operation'], 2 => $math['second'], 3 => 15); $x = 18;//Position X (first) for ($i=0;$i<4;$i++) { $randChar = PhocaguestbookHelperCaptchaMath::createImageItem($items[$i]); // Position Y (first) --- if ($i == 1) { $y = 20; } else { $y = 10; } // ----------------------- foreach ($randChar['array'] as $key => $value) { $font_color = PhocaguestbookHelperCaptchaMath::getRandomFontColor(); if ($i == 1 \|\| $i == 3) { $font_size = 2; } else { $font_size = 5; } $position_x = $x; $position_y = $y; ImageString($image, $font_size, $position_x, $position_y, $value, ImageColorAllocate ($image, $font_color[0], $font_color[1], $font_color[2])); if ($i == 1) { $y = $y + 7; } else { $y = $y + 11; } } if ($i == 0 \|\| $i == 2) { $x = $x + 70; } else { $x = $x + 50; } } // Here is not the rand char but the matematical outcome $image_data['outcome'] = $math['outcome']; $image_data['image'] = $image; return $image_data; } public static function generateRandomChar($length=6) { $paramsC = JComponentHelper::getParams('com_phocaguestbook') ; $charGroup = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z'; if ($paramsC->get( 'math_captcha_chars' ) != '') { $charGroup = str_replace(" ", "", trim( $paramsC->get( 'math_captcha_chars' ) )); } $charGroup = explode( ',', $charGroup ); srand ((double) microtime() * 1000000); $random_string = ""; for($i=0;$i<$length;$i++) { $random_char_group = rand(0,sizeof($charGroup)-1); $random_string .= $charGroup[$random_char_group]; } return $random_string; } public static function getRandomImage() { $rand = mt_rand(10,13); $image = ''.$rand.'.jpg'; $image = JPATH_ROOT.'/components/com_phocaguestbook/assets/captcha/'. $image; return $image; } public static function getRandomFontColor() { $rand = mt_rand(1,6); if ($rand == 1) {$font_color[0] = 0; $font_color[1] = 0; $font_color[2] = 0;} if ($rand == 2) {$font_color[0] = 0; $font_color[1] = 0; $font_color[2] = 153;} if ($rand == 3) {$font_color[0] = 0; $font_color[1] = 102; $font_color[2] = 0;} if ($rand == 4) {$font_color[0] = 102; $font_color[1] = 51; $font_color[2] = 0;} if ($rand == 5) {$font_color[0] = 163; $font_color[1] = 0; $font_color[2] = 0;} if ($rand == 6) {$font_color[0] = 0; $font_color[1] = 82; $font_color[2] = 163;} return $font_color; } public static function getMath() { $math['first'] = mt_rand(1,9); $math['second'] = mt_rand(1,9); $math['operation'] = mt_rand(10,13); switch ($math['operation']) { case 10; $math['outcome'] = (int)$math['first'] + (int)$math['second']; break; case 11; if ((int)$math['first'] < (int)$math['second']) { $prevFirst = $math['first']; $math['first'] = $math['second']; $math['second'] = $prevFirst; } $outcome = (int)$math['first'] - (int)$math['second']; if ($outcome == 0) { $math['second'] = $math['second'] - 1; } $math['outcome'] = (int)$math['first'] - (int)$math['second']; break; case 12; $math['outcome'] = (int)$math['first'] * (int)$math['second']; break; case 13; switch ($math['first']) { case 9: $second = array(1,3,9,9); break; case 8: $second = array(1,2,4,8); break; case 7: $second = array(1,7,7,7); break; case 6: $second = array(1,2,3,6); break; case 5: $second = array(1,5,5,5); break; case 4: $second = array(1,2,4,4); break; case 3: $second = array(1,3,3,3); break; case 2: $second = array(1,2,2,2); break; case 1: default: $second = array(1,1,1,1); break; } $randSecond = mt_rand(0,3); $math['outcome'] = (int)$math['first'] / (int)$second[$randSecond]; $math['second'] = (int)$second[$randSecond];// We must define the second new break; } return $math; } } // ================================================ class PhocaguestbookHelperCaptchaStd { public static function createImageData() { $rand_char = PhocaguestbookHelperCaptchaStd::generateRandomChar(6); $rand_char_array = array ( $rand_char[0]." ", " ".$rand_char[1]." " , " ".$rand_char[2]." " , " ".$rand_char[3]." " , " ".$rand_char[4]." " , " ".$rand_char[5]); $image_name = PhocaguestbookHelperCaptchaStd::getRandomImage(); $image = @imagecreatefromjpeg($image_name); foreach ($rand_char_array as $key => $value) { $font_color = PhocaguestbookHelperCaptchaStd::getRandomFontColor(); $position_x = mt_rand(5,8); $position_y = mt_rand(6,9); $font_size = mt_rand(4,5); ImageString($image, $font_size, $position_x, $position_y, $value, ImageColorAllocate ($image, $font_color[0], $font_color[1], $font_color[2])); } $image_data['outcome'] = $rand_char; $image_data['image'] = $image; return $image_data; } public static function generateRandomChar($length=6) { $paramsC = JComponentHelper::getParams('com_phocaguestbook') ; $charGroup = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z'; if ($paramsC->get( 'standard_captcha_chars' ) != '') { $charGroup = str_replace(" ", "", trim( $paramsC->get( 'standard_captcha_chars' ) )); } $charGroup = explode( ',', $charGroup ); srand ((double) microtime() * 1000000); $random_string = ""; for($i=0;$i<$length;$i++) { $random_char_group = rand(0,sizeof($charGroup)-1); $random_string .= $charGroup[$random_char_group]; } return $random_string; } public static function getRandomImage() { $rand = mt_rand(1,4); $image = '0'.$rand.'.jpg'; $image = JPATH_ROOT.'/components/com_phocaguestbook/assets/captcha/'. $image; return $image; } public static function getRandomFontColor() { $rand = mt_rand(1,6); if ($rand == 1) {$font_color[0] = 0; $font_color[1] = 0; $font_color[2] = 0;} if ($rand == 2) {$font_color[0] = 0; $font_color[1] = 0; $font_color[2] = 153;} if ($rand == 3) {$font_color[0] = 0; $font_color[1] = 102; $font_color[2] = 0;} if ($rand == 4) {$font_color[0] = 102; $font_color[1] = 51; $font_color[2] = 0;} if ($rand == 5) {$font_color[0] = 163; $font_color[1] = 0; $font_color[2] = 0;} if ($rand == 6) {$font_color[0] = 0; $font_color[1] = 82; $font_color[2] = 163;} return $font_color; } } // ================================================ class PhocaguestbookHelperCaptchaEasycalc { /$params->get('calc_opertor') $params->get('calc_operand') $params->get('calc_string'); $params->get('calc_max_value', 20) // Determine max. operand $params->get('calc_negativ') == 0)/ public function createCaptchaData($typeOfOperator, $numOfOperand, $convertToString, $maxValue, $useNegativ){ $captcha = array(); // Determine values if($typeOfOperator == 2) { $tcalc = mt_rand(1, 2); } elseif($typeOfOperator == 1) { $tcalc = 2; } else { $tcalc = 1; } if($numOfOperand == 2) { $toperand = 2; } elseif($numOfOperand == 3) { $toperand = 3; } else { $toperand = mt_rand(2, 3); } //make numbers if ($useNegativ && ($tcalc == 2)) { $spam_check_1 = mt_rand($maxValue / 2, $maxValue); $spam_check_2 = mt_rand(1, $maxValue / 2); if($toperand == 3) { $spam_check_3 = mt_rand(0, $spam_check_1 - $spam_check_2); } } else { $spam_check_1 = mt_rand(1, $maxValue); $spam_check_2 = mt_rand(1, $maxValue); if($toperand == 3) { $spam_check_3 = mt_rand(0, $maxValue); } } //operand 1 $captcha['result'] = $spam_check_1; $captcha['challenge'] = JText::_('COM_PHOCAGUESTBOOK_CALC_CHALLENGE'). PhocaguestbookHelperCaptchaEasycalc::converttostring($spam_check_1, $convertToString); //operand 2 $captcha['challenge'] .= ($tcalc == 1) ? ' '.JText::_('COM_PHOCAGUESTBOOK_CALC_PLUS').' ' : ' '.JText::_('COM_PHOCAGUESTBOOK_CALC_MINUS').' '; $captcha['result'] += ($tcalc == 1) ? $spam_check_2 : (-1 * $spam_check_2); $captcha['challenge'] .= PhocaguestbookHelperCaptchaEasycalc::converttostring($spam_check_2, $convertToString); //operand 3 if($toperand == 3) { $captcha['challenge'] .= ($tcalc == 1) ? ' '.JText::_('COM_PHOCAGUESTBOOK_CALC_PLUS').' ' : ' '.JText::_('COM_PHOCAGUESTBOOK_CALC_MINUS').' '; $captcha['result'] += ($tcalc == 1) ? $spam_check_3 : (-1 * $spam_check_3); $captcha['challenge'] .= PhocaguestbookHelperCaptchaEasycalc::converttostring($spam_check_3, $convertToString); } //done $captcha['challenge'] .= ' '.JText::_('COM_PHOCAGUESTBOOK_CALC_EQUALS').' '; $captcha['result_encoded'] = base64_encode($captcha['result']); return $captcha; } // Convert numbers into strings, depending on type private function converttostring($x, $type) { switch ($type){ case 0: $convert = 0; break; //do not convert case 1: $convert = 1; break; //convert default: case 2: $convert = mt_rand(0, 2); break; // Probability 2/3 for conversion } if($convert >= 1) { if($x > 20) { return $x; //not supported yet } else { // Names of the numbers are read from language file $names = array(JText::_('COM_PHOCAGUESTBOOK_CALC_NULL'), JText::_('COM_PHOCAGUESTBOOK_CALC_ONE'), JText::_('COM_PHOCAGUESTBOOK_CALC_TWO'), JText::_('COM_PHOCAGUESTBOOK_CALC_THREE'), JText::_('COM_PHOCAGUESTBOOK_CALC_FOUR'), JText::_('COM_PHOCAGUESTBOOK_CALC_FIVE'), JText::_('COM_PHOCAGUESTBOOK_CALC_SIX'), JText::_('COM_PHOCAGUESTBOOK_CALC_SEVEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_EIGHT'), JText::_('COM_PHOCAGUESTBOOK_CALC_NINE'), JText::_('COM_PHOCAGUESTBOOK_CALC_TEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_ELEVEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_TWELVE'), JText::_('COM_PHOCAGUESTBOOK_CALC_THIRTEEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_FOURTEEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_FIFTEEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_SIXTEEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_SEVENTEEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_EIGHTEEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_NINETEEN'), JText::_('COM_PHOCAGUESTBOOK_CALC_TWENTY')); return $names[$x]; } } else { return $x; } } } class PhocaguestbookHelperCaptchaHn { //////////////////////////////// // PUBLIC PARAMS public $chars = 6; //How many chars the generated text should have public $minsize = 20; //The minimum size a Char should have public $maxsize = 40; //The maximum size a Char can have public $maxrotation = 25; //The maximum degrees a Char should be rotated. Set it to 30 means a random rotation between -30 and 30. public $noise = TRUE; //Background noise On/Off (if is Off, a grid will be created) //////////////////////////////// // PRIVATE & PROTECTED PARAMS private $noisefactor = 9; // this will multiplyed with number of chars function createImageData() { $paramsC = JComponentHelper::getParams('com_phocaguestbook') ; $this->noise = $paramsC->get('hn_noise', TRUE); //get challenge $rand_char = PhocaguestbookHelperCaptchaHn::generateRandomChar($this->chars); // get number of noise-chars for background if is enabled $nb_noise = $this->noise ? ($this->chars * $this->noisefactor) : 0; // set dimension of image $lx = ($this->chars + 1) * (int)(($this->maxsize + $this->minsize) / 1.5); $ly = (int)(2.4 * $this->maxsize); $ttf[0] = JPATH_COMPONENT . '/assets/captcha/fonts/essai.ttf'; $ttf[1] = JPATH_COMPONENT . '/assets/captcha/fonts/justus.ttf'; //$ttf[2] = JPATH_COMPONENT . '/assets/captcha/fonts/vera.ttf'; $ttfmax = 1; //max ttf[] idx // create Image and set the apropriate function depending on GD-Version & websafecolor-value $image = ImageCreateTruecolor($lx,$ly); // Set Backgroundcolor $rndcolor = PhocaguestbookHelperCaptchaHn::getRandomColor(224, 255); $back = @ImageColorAllocate($image, $rndcolor[0], $rndcolor[1], $rndcolor[2]); @ImageFilledRectangle($image,0,0,$lx,$ly,$back); // allocates the 216 websafe color palette to the image //if($gd_version < 2 \|\| $this->websafecolors) $this->makeWebsafeColors($image); // fill with noise or grid if($nb_noise > 0) { // random characters in background with random position, angle, color for($i=0; $i < $nb_noise; $i++) { $rndcolor = PhocaguestbookHelperCaptchaHn::getRandomColor(160, 224); srand((double)microtime()1000000); $size = intval(rand((int)($this->minsize / 2.3), (int)($this->maxsize / 1.7))); $angle = intval(rand(0, 360)); $x = intval(rand(0, $lx)); $y = intval(rand(0, (int)($ly - ($size / 5)))); $color = @ImageColorAllocate($image, $rndcolor[0], $rndcolor[1], $rndcolor[2]); $rand_ttf = mt_rand(0,$ttfmax); $text = chr(intval(rand(45,250))); @ImageTTFText($image, $size, $angle, $x, $y, $color, $ttf[$rand_ttf], $text); } } else { // generate grid for($i=0; $i < $lx; $i += (int)($this->minsize / 1.5)) { $rndcolor = PhocaguestbookHelperCaptchaHn::getRandomColor(160, 224); $color = @ImageColorAllocate($image, $rndcolor[0], $rndcolor[1], $rndcolor[2]); @imageline($image, $i, 0, $i, $ly, $color); } for($i=0 ; $i < $ly; $i += (int)($this->minsize / 1.8)) { $rndcolor = PhocaguestbookHelperCaptchaHn::getRandomColor(160, 224); $color = @ImageColorAllocate($image, $rndcolor[0], $rndcolor[1], $rndcolor[2]); @imageline($image, 0, $i, $lx, $i, $color); } } // generate Text $char_string = ''; $x = intval(rand($this->minsize,$this->maxsize)); foreach ($rand_char as $key => $value) { srand((double)microtime()1000000); $angle = intval(rand(($this->maxrotation * -1), $this->maxrotation)); $size = intval(rand($this->minsize, $this->maxsize)); $y = intval(rand((int)($size * 1.5), (int)($ly - ($size / 7)))); $rndcolor = PhocaguestbookHelperCaptchaHn::getRandomColor(0, 127); $color = @ImageColorAllocate($image, $rndcolor[0], $rndcolor[1], $rndcolor[2]); $rndcolor = $this->getRandomColor(0, 127); $shadow = @ImageColorAllocate($image, $rndcolor[0] + 127, $rndcolor[1] + 127, $rndcolor[2] + 127); $rand_ttf = mt_rand(0,$ttfmax); @ImageTTFText($image, $size, $angle, $x + (int)($size / 15), $y, $shadow, $ttf[$rand_ttf], $value); @ImageTTFText($image, $size, $angle, $x, $y - (int)($size / 15), $color, $ttf[$rand_ttf], $value); $x += (int)($size + ($this->minsize / 5)); $char_string .= $value; } $image_data['outcome'] = $char_string;//$rand_char; $image_data['image'] = $image; return $image_data; } function generateRandomChar($length=6) { $paramsC = JComponentHelper::getParams('com_phocaguestbook') ; $charGroup = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z'; if ($paramsC->get( 'ttf_captcha_chars' ) != '') { $charGroup = str_replace(" ", "", trim( $paramsC->get( 'hn_captcha_chars' ) )); } $charGroup = explode( ',', $charGroup ); srand ((double) microtime() * 1000000); $random_array = array(); for($i=0;$i<$length;$i++) { $random_char_group = rand(0,sizeof($charGroup)-1); $random_array[] = $charGroup[$random_char_group]; } return $random_array; } function getRandomColor($min,$max) { srand((double)microtime() * 1000000); $color[0] = intval(rand($min,$max)); $color[1] = intval(rand($min,$max)); $color[2] = intval(rand($min,$max)); return $color; } } ?>

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