에디터, 캡챠를 bbs 밑으로 이동후 코드 수정
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gnuboard
254
bbs/gcaptcha/gcaptcha.lib.php
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254
bbs/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 = 20;
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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 $captcha_length = 6;
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// 이미지 크기
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function set_box_size($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', $captcha_key);
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// Set the content-type
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//header('Content-Type: image/png');
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// Create the image
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$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_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, $captcha_key);
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}
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imagepng($im, captcha_file('.png'), 0, NULL);
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imagedestroy($im);
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make_wav();
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}
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}
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/*
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사용법 :
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$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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$obj->run();
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$html = '<fieldset id="captcha" class="'.$class.'">';
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$html .= '<legend class="sound_only">스팸방지</legend>';
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$html .= '<img src="'.captcha_file('.png').'" title="스팸방지 숫자">';
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$html .= '<a href="'.captcha_file('.wav').'" id="captcha_wav">음성듣기</a>';
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$html .= '<label for="captcha_key">스팸방지 숫자 입력</label>';
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$html .= '<input type="text" id="captcha_key" name="captcha_key" class="captcha_box fieldset_input" size="6" maxlength="6" required title="스팸방지 숫자 입력">';
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$html .= '<p class="sound_only">스팸방지 숫자를 순서대로 입력하세요.</p>';
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$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 (!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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function make_wav()
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{
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global $g4;
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$number = (string)$_SESSION['ss_captcha_key'];
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$wavs = array();
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for($i=0;$i<strlen($number);$i++){
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$file = $g4['gcaptcha_wavs'].'/'.$number[$i].'.wav';
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$wavs[] = $file;
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}
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$wav_filepath = captcha_file('.wav');
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$fp = fopen($wav_filepath, 'w+');
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fwrite($fp, join_wavs($wavs));
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fclose($fp);
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}
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function join_wavs($wavs)
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{
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$fields = join('/',array( 'H8ChunkID', 'VChunkSize', 'H8Format',
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'H8Subchunk1ID', 'VSubchunk1Size',
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'vAudioFormat', 'vNumChannels', 'VSampleRate',
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'VByteRate', 'vBlockAlign', 'vBitsPerSample' ));
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$data = '';
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$info = array();
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foreach($wavs as $wav){
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$fp = fopen($wav,'rb');
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$header = fread($fp,36);
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$info = unpack($fields,$header);
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// read optional extra stuff
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if($info['Subchunk1Size'] > 16){
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$header .= fread($fp,($info['Subchunk1Size']-16));
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}
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// read SubChunk2ID
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$header .= fread($fp,4);
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// read Subchunk2Size
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$size = unpack('vsize',fread($fp, 4));
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$size = $size['size'];
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// read data
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$data .= fread($fp,$size);
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}
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return ''
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.pack('a4', 'RIFF')
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.pack('V', strlen($data) + 36)
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.pack('a4', 'WAVE')
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.pack('a4', 'fmt ')
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.pack('V', $info['Subchunk1Size']) // 16
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.pack('v', $info['AudioFormat']) // 1
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.pack('v', $info['NumChannels']) // 1
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.pack('V', $info['SampleRate']) // 8000
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.pack('V', $info['ByteRate']) // 8000
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.pack('v', $info['BlockAlign']) // 1
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.pack('v', $info['BitsPerSample']) // 8
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.pack('a4', 'data')
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.pack('V', strlen($data))
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.$data;
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}
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// 캡챠 파일의 상대 경로를 반환
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function captcha_file($extension='.png')
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{
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global $g4;
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mk_subdir($g4['cache_dir']);
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$captcha_path = mk_subdir($g4['cache_dir'].'/'.$g4['captcha_dir']);
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return $captcha_path.'/'.abs_ip2long().'_'.$_COOKIE['PHPSESSID'].$extension;
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}
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?>
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