<?php
class ESPCMS_VerificationCode {
var $code;
var $type = 0;
var $width = 0;
var $height = 0;
var $background = 1;
var $adulterate = 1;
var $ttf = 0;
var $angle = 0;
var $color = 1;
var $size = 0;
var $shadow = 0;
var $animator = 0;
var $fontpath = '';
var $datapath = '';
var $includepath = '';
var $bgcolor = '#1C9B1E';
var $im;
function seccodeconvert(&$seccode) {
$s = sprintf('%04s', base_convert($seccode, 10, 20));
$seccodeunits = 'CEFHKLMNOPQRSTUVWXYZ';
$seccode = '';
for ($i = 0; $i < 4; $i++) {
$unit = ord($s{$i});
$seccode .= ( $unit >= 0x30 && $unit <= 0x39) ? $seccodeunits[$unit - 0x30] : $seccodeunits[$unit - 0x57];
}
}
function display() {
$this->type == 2 && !extension_loaded('ming') && $this->type = 0;
$this->width = $this->width >= 0 && $this->width <= 200 ? $this->width : 150;
$this->height = $this->height >= 0 && $this->height <= 80 ? $this->height : 60;
$this->seccodeconvert($this->code);
$this->image();
}
function fileext($filename) {
return trim(substr(strrchr($filename, '.'), 1, 10));
}
function image() {
$bgcontent = $this->background();
$this->im = imagecreatefromstring($bgcontent);
$this->adulterate && $this->adulterate();
$this->ttf && function_exists('imagettftext') || $this->type == 1 ? $this->ttffont() : $this->giffont();
if (function_exists('imagepng')) {
header('Content-type: image/png');
imagepng($this->im);
} else {
header('Content-type: image/jpeg');
imagejpeg($this->im, '', 100);
}
imagedestroy($this->im);
}
function background() {
$this->im = imagecreatetruecolor($this->width, $this->height);
$backgroundcolor = imagecolorallocate($this->im, 255, 255, 255);
$backgrounds = $c = array();
if ($this->background && function_exists('imagecreatefromjpeg') && function_exists('imagecolorat') && function_exists('imagecopymerge') && function_exists('imagesetpixel') && function_exists('imageSX') && function_exists('imageSY')) {
if ($handle = @opendir($this->datapath . 'background/')) {
while ($bgfile = @readdir($handle)) {
if (preg_match('/\.jpg$/i', $bgfile)) {
$backgrounds[] = $this->datapath . 'background/' . $bgfile;
}
}
@closedir($handle);
}
if ($backgrounds) {
$imwm = imagecreatefromjpeg($backgrounds[array_rand($backgrounds)]);
$colorindex = imagecolorat($imwm, 0, 0);
$this->c = imagecolorsforindex($imwm, $colorindex);
$colorindex = imagecolorat($imwm, 1, 0);
imagesetpixel($imwm, 0, 0, $colorindex);
$c[0] = $c['red'];
$c[1] = $c['green'];
$c[2] = $c['blue'];
imagecopymerge($this->im, $imwm, 0, 0, mt_rand(0, 800 - $this->width), mt_rand(0, 80 - $this->height), imageSX($imwm), imageSY($imwm), 100);
imagedestroy($imwm);
}
}
if (!$this->background || !$backgrounds) {
for ($i = 0; $i < 3; $i++) {
$start[$i] = mt_rand(200, 255);
$end[$i] = mt_rand(100, 250);
$step[$i] = ($end[$i] - $start[$i]) / $this->width;
$c[$i] = $start[$i];
}
if (empty($this->bgcolor))
$this->bgcolor = "#1C9B1E";
$bR = hexdec(substr($this->bgcolor, 1, 2));
$bG = hexdec(substr($this->bgcolor, 3, 2));
$bB = hexdec(substr($this->bgcolor, 5));
for ($i = 0; $i < $this->width; $i++) {
$color = imagecolorallocate($this->im, $bR, $bG, $bB);
imageline($this->im, $i, 0, $i - $angle, $this->height, $color);
$c[0] += $step[0];
$c[1] += $step[1];
$c[2] += $step[2];
}
$c[0] -= 20;
$c[1] -= 20;
$c[2] -= 20;
}
ob_start();
if (function_exists('imagepng')) {
imagepng($this->im);
} else {
imagejpeg($this->im, '', 10);
}
imagedestroy($this->im);
$bgcontent = ob_get_contents();
ob_end_clean();
if (empty($this->fontcolor))
$this->fontcolor = "#000";
$bR = hexdec(substr($this->fontcolor, 1, 2));
$bG = hexdec(substr($this->fontcolor, 3, 2));
$bB = hexdec(substr($this->fontcolor, 5));
$this->fontcolor = array($bR, $bG, $bB);
return $bgcontent;
}
function adulterate() {
$linenums = $this->height / 10;
for ($i = 0; $i <= $linenums; $i++) {
$color = $this->color ? imagecolorallocate($this->im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)) : imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);
$x = mt_rand(0, $this->width);
$y = mt_rand(0, $this->height);
if (mt_rand(0, 1)) {
imagearc($this->im, $x, $y, mt_rand(0, $this->width), mt_rand(0, $this->height), mt_rand(0, 360), mt_rand(0, 360), $color);
} else {
imageline($this->im, $x, $y, $linex + mt_rand(0, $linemaxlong), $liney + mt_rand(0, mt_rand($this->height, $this->width)), $color);
}
}
}
function adulteratefont() {
$seccodeunits = 'BCEFGHJKMPQRTVWXY2346789';
$x = $this->width / 4;
$y = $this->height / 10;
$text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);
for ($i = 0; $i <= 3; $i++) {
$adulteratecode = $seccodeunits[mt_rand(0, 23)];
imagechar($this->im, 5, $x * $i + mt_rand(0, $x - 10), mt_rand($y, $this->height - 10 - $y), $adulteratecode, $text_color);
}
}
function ttffont() {
$seccode = $this->code;
$charset = $GLOBALS['charset'];
$seccoderoot = $this->type ? $this->fontpath . 'ch/' : $this->fontpath . 'en/';
$dirs = opendir($seccoderoot);
$seccodettf = array();
while ($entry = readdir($dirs)) {
if ($entry != '.' && $entry != '..' && in_array(strtolower($this->fileext($entry)), array('ttf', 'ttc'))) {
$seccodettf[] = $entry;
}
}
if (empty($seccodettf)) {
$this->giffont();
return;
}
$seccodelength = 4;
$widthtotal = 0;
for ($i = 0; $i < $seccodelength; $i++) {
$font[$i]['font'] = $seccoderoot . $seccodettf[array_rand($seccodettf)];
$font[$i]['angle'] = 0;
$font[$i]['size'] = 20;
$this->size && $font[$i]['size'] = mt_rand($font[$i]['size'] - $this->width / 60, $font[$i]['size'] + $this->width / 50);
$box = imagettfbbox($font[$i]['size'], 0, $font[$i]['font'], $seccode[$i]);
$font[$i]['zheight'] = 18;
$box = imagettfbbox($font[$i]['size'], $font[$i]['angle'], $font[$i]['font'], $seccode[$i]);
$font[$i]['height'] = 18;
$font[$i]['hd'] = 0;
$font[$i]['width'] = 18;
$widthtotal += $font[$i]['width'];
}
$x = mt_rand($font[0]['angle'] > 0 ? cos(deg2rad(90 - $font[0]['angle'])) * $font[0]['zheight'] : 1, $this->width - $widthtotal);
!$this->color && $text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);
for ($i = 0; $i < $seccodelength; $i++) {
if ($this->color) {
$this->shadow && $text_shadowcolor = imagecolorallocate($this->im, 255 - $this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);
$text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);
} elseif ($this->shadow) {
$text_shadowcolor = imagecolorallocate($this->im, 255 - $this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);
}
$y = $font[0]['angle'] > 0 ? mt_rand($font[$i]['height'], $this->height) : mt_rand($font[$i]['height'] - $font[$i]['hd'], $this->height - $font[$i]['hd']);
$this->shadow && imagettftext($this->im, $font[$i]['size'], $font[$i]['angle'], $x + 1, $y + 1, $text_shadowcolor, $font[$i]['font'], $seccode[$i]);
imagettftext($this->im, $font[$i]['size'], $font[$i]['angle'], $x, $y, $text_color, $font[$i]['font'], $seccode[$i]);
$x += $font[$i]['width'];
}
}
function giffont() {
$seccode = $this->code;
$seccodedir = array();
if (function_exists('imagecreatefromgif')) {
$seccoderoot = $this->datapath;
$dirs = opendir($seccoderoot);
while ($dir = readdir($dirs)) {
if ($dir != '.' && $dir != '..' && file_exists($seccoderoot . $dir . '/seccode.gif')) {
$seccodedir[] = $dir;
}
}
}
$widthtotal = 0;
for ($i = 0; $i <= 3; $i++) {
$this->imcodefile = $seccodedir ? $seccoderoot . $seccodedir[array_rand($seccodedir)] . '/' . strtolower($seccode[$i]) . '.gif' : '';
if (!empty($this->imcodefile) && file_exists($this->imcodefile)) {
$font[$i]['file'] = $this->imcodefile;
$font[$i]['data'] = getimagesize($this->imcodefile);
$font[$i]['width'] = $font[$i]['data'][0] + mt_rand(0, 10) - 4;
$font[$i]['height'] = $font[$i]['data'][1] + mt_rand(0, 10) - 4;
$font[$i]['width'] += mt_rand(0, $this->width / 5 - $font[$i]['width']);
$widthtotal += $font[$i]['width'];
} else {
$font[$i]['file'] = '';
$font[$i]['width'] = 8 + mt_rand(0, $this->width / 5 - 5);
$widthtotal += $font[$i]['width'];
}
}
$x = mt_rand(1, $this->width - $widthtotal);
for ($i = 0; $i <= 3; $i++) {
$this->color && $this->fontcolor = array(mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
if ($font[$i]['file']) {
$this->imcode = imagecreatefromgif($font[$i]['file']);
if ($this->size) {
$font[$i]['width'] = mt_rand($font[$i]['width'] - $this->width / 20, $font[$i]['width'] + $this->width / 20);
$font[$i]['height'] = mt_rand($font[$i]['height'] - $this->width / 20, $font[$i]['height'] + $this->width / 20);
}
$y = mt_rand(0, $this->height - $font[$i]['height']);
if ($this->shadow) {
$this->imcodeshadow = $this->imcode;
imagecolorset($this->imcodeshadow, 0, 255 - $this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);
imagecopyresized($this->im, $this->imcodeshadow, $x + 1, $y + 1, 0, 0, $font[$i]['width'], $font[$i]['height'], $font[$i]['data'][0], $font[$i]['data'][1]);
}
imagecolorset($this->imcode, 0, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);
imagecopyresized($this->im, $this->imcode, $x, $y, 0, 0, $font[$i]['width'], $font[$i]['height'], $font[$i]['data'][0], $font[$i]['data'][1]);
} else {
$y = mt_rand(0, $this->height - 20);
if ($this->shadow) {
$text_shadowcolor = imagecolorallocate($this->im, 255 - $this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);
imagechar($this->im, 5, $x + 1, $y + 1, $seccode[$i], $text_shadowcolor);
}
$text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);
imagechar($this->im, 5, $x, $y, $seccode[$i], $text_color);
}
$x += $font[$i]['width'];
}
}
}