bbs 의 하위 폴더를 plugin 폴더 밑으로 모두 이동
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gnuboard
215
plugin/gcaptcha/gcaptcha.lib.php
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215
plugin/gcaptcha/gcaptcha.lib.php
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<?php
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include_once("./_common.php");
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class gcaptcha
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{
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// 이미지크기 폭
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var $width = 70;
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// 이미지크기 높이
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var $height = 22;
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// 폰트 사이즈
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var $size = 13;
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// 폰트 기울기
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var $angle = 0;
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// 폰트 왼쪽 위치
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var $x = 5;
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// 폰트 위쪽 위치
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var $y = 18;
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// 캡챠이미지 배경색상 rgb
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var $back = array('r'=>255, 'g'=>255, 'b'=>255);
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// 글자색상 rgb
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var $text = array('r'=>0, 'g'=>0, 'b'=>0);
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// 그림자 글자색상 rgb
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var $shadow = array('r'=>128, 'g'=>128, 'b'=>128);
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var $captcha_length = 6;
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var $captcha_filename = '';
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// 이미지 크기
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function set_box_size($width, $height) {
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$this->width = $width;
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$this->height = $height;
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}
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// 폰트 사이즈
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function set_size($size) {
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$this->size = $size;
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}
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// 폰트 기울기
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function set_angle($angle) {
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$this->angle = $angle;
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}
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// 폰트 위치
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function set_position($x, $y) {
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$this->x = $x;
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$this->y = $y;
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}
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function set_captcha_length($length)
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{
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$this->captcha_length = $length;
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}
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function set_back_color($r, $g, $b) {
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$this->back['r'] = $r;
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$this->back['g'] = $g;
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$this->back['b'] = $b;
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}
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function set_text_color($r, $g, $b) {
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$this->text['r'] = $r;
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$this->text['g'] = $g;
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$this->text['b'] = $b;
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}
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function set_shadow_color($r, $g, $b) {
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$this->shadow['r'] = $r;
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$this->shadow['g'] = $g;
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$this->shadow['b'] = $b;
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}
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function get_captcha_key()
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{
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$from = (int)('1'.str_repeat('0', $this->captcha_length - 1));
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$to = (int)(str_repeat('9', $this->captcha_length));
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return mt_rand($from, $to);
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}
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function run()
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{
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global $g4;
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// The text to draw
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$captcha_key = $this->get_captcha_key();
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set_session('ss_captcha_cnt', 0);
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set_session('ss_captcha_key', $captcha_key);
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// Set the content-type
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//header('Content-Type: image/jpeg');
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// Create the image
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$im = imagecreatetruecolor($this->width, $this->height);
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// Create some colors
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$white = imagecolorallocate($im, $this->back['r'], $this->back['g'], $this->back['b']);
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$grey = imagecolorallocate($im, $this->shadow['r'], $this->shadow['g'], $this->shadow['b']);
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$black = imagecolorallocate($im, $this->text['r'], $this->text['g'], $this->text['b']);
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imagefilledrectangle($im, 0, 0, $this->width, $this->height, $white);
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// Replace path by your own font path
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$fonts = Array();
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foreach (glob(G4_GCAPTCHA_PATH.'/fonts/*.ttf') as $filename) {
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$fonts[] = $filename;
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}
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$font = $fonts[mt_rand(0, count($fonts)-1)];
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$size = $this->size;
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$angle = $this->angle;
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$x = $this->x;
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$y = $this->y;
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// Add some shadow to the text
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imagettftext($im, $size, $angle, $x, $y, $grey, $font, $captcha_key);
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// Add the text
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imagettftext($im, $size, $angle, $x-1, $y-1, $black, $font, $captcha_key);
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if (mt_rand(0,1)) {
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imagettftext($im, $size, $angle, $x-2, $y-2, $white, $font, $captcha_key);
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} else if (mt_rand(0,1)) {
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imagettftext($im, $size, $angle, $x-2, $y-2, $grey, $font, $captcha_key);
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}
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$this->captcha_filename = $this->get_captcha_filename();
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imagejpeg($im, G4_DATA_PATH.'/cache/'.$this->captcha_filename.'.jpg');
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imagedestroy($im);
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$this->make_mp3($this->captcha_filename);
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}
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function get_captcha_filename()
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{
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return 'gcaptcha-'.abs_ip2long().'_'.session_id();
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}
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function make_mp3($captcha_filename)
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{
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global $g4;
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$number = (string)$_SESSION['ss_captcha_key'];
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$mp3s = array();
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for($i=0;$i<strlen($number);$i++){
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$file = G4_GCAPTCHA_PATH.'/mp3/'.$number[$i].'.mp3';
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$mp3s[] = $file;
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}
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$mp3_filepath = G4_DATA_PATH.'/cache/'.$captcha_filename.'.mp3';
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$contents = '';
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foreach ($mp3s as $mp3) {
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$contents .= file_get_contents($mp3);
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}
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file_put_contents($mp3_filepath, $contents);
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}
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}
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/*
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사용법 :
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$gcaptcha = new gcaptcha();
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$gcaptcha->set_captcha_length(mt_rand(4, 6));
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$gcaptcha->set_position(mt_rand(0, 10), mt_rand(15, 20));
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$gcaptcha->set_angle(mt_rand(-3, 3));
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$gcaptcha->set_size(mt_rand(15, 16));
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$gcaptcha->set_back_color(mt_rand(200,255), mt_rand(200,255), mt_rand(200,255));
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$gcaptcha->set_text_color(mt_rand(0,100), mt_rand(0,100), mt_rand(0,100));
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$gcaptcha->set_shadow_color(mt_rand(100,200), mt_rand(100,200), mt_rand(100,200));
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$gcaptcha->run();
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*/
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// 캡챠이미지는 한개만 사용 가능함.
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function captcha_html($class='captcha')
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{
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global $g4, $gcaptcha;
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$obj = new gcaptcha();
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$obj->run();
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$rand = rand();
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$jpg_file_url = G4_DATA_URL.'/cache/'.$obj->captcha_filename.'.jpg';
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$mp3_file_url = G4_DATA_URL.'/cache/'.$obj->captcha_filename.'.mp3';
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$html .= "\n".'<script>var g4_gcaptcha_url = "'.G4_GCAPTCHA_URL.'";</script>';
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$html .= "\n".'<script src="'.G4_GCAPTCHA_URL.'/gcaptcha.js"></script>';
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$html .= '<fieldset id="captcha" class="'.$class.'">';
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$html .= '<legend class="sound_only">자동등록방지</legend>';
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if (G4_IS_MOBILE) $html .= '<audio src="'.$mp3_file_url.'?_='.$rand.'" controls></audio>';
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$html .= '<img src="'.$jpg_file_url.'?_='.$rand.'" alt="자동등록방지 숫자">';
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if (!G4_IS_MOBILE) $html .= '<a href="'.$mp3_file_url.'?_='.$rand.'" id="captcha_mp3" target="_blank"><img src="'.G4_GCAPTCHA_URL.'/img/sound.gif" alt="숫자를 음성으로 듣기"></a>';
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$html .= '<input type="text" id="captcha_key" name="captcha_key" class="captcha_box frm_input" size="6" maxlength="6" required title="자동등록방지 숫자 입력">';
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$html .= '<p class="sound_only">자동등록방지 숫자를 순서대로 입력하세요.</p>';
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$html .= '</fieldset>';
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return $html;
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}
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function chk_captcha()
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{
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$captcha_cnt = (int)$_SESSION['ss_captcha_cnt'];
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if ($captcha_cnt > 5) return false;
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if (!trim($_POST['captcha_key'])) return false;
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if (!isset($_POST['captcha_key'])) return false;
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if ($_POST['captcha_key'] != $_SESSION['ss_captcha_key']) {
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$_SESSION['ss_captcha_cnt'] = $captcha_cnt + 1;
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return false;
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}
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return true;
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}
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function chk_captcha_js()
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{
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return "if (!chk_captcha()) return false;";
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}
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?>
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