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dheader('Content-Type: image');

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dheader('Content-Type: image/jpeg');

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if($img->Thumb($filename, $thumbfile, $w, $h, $type)) {
if($nocache) {
dheader('Content-Type: image/jpeg');
@readfile($_G['setting']['attachdir'].$thumbfile);

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function get_image_extension($image){
$extension = pathinfo($filename,PATHINFO_EXTENSION);
if(in_array($extension,['jpg','jpeg','png','gif','bmp'])){
return 'image/'.$extension;
}
return 'image';
}

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function get_image_extension($filename){
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$rs = '';
if (!$finfo) {
return 'image';
}
$rs = finfo_file($finfo, $filename);
finfo_close($finfo);
return $rs;
}

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<?php
/**
* [Discuz!] (C)2001-2099 Comsenz Inc.
* This is NOT a freeware, use is subject to license terms
*
* $Id: forum_image.php 32531 2013-02-06 10:15:19Z zhangguosheng $
*/
if(!defined('IN_DISCUZ') || empty($_GET['aid']) || empty($_GET['size']) || empty($_GET['key'])) {
header('location: '.$_G['siteurl'].'static/image/common/none.gif');
exit;
}
$nocache = !empty($_GET['nocache']) ? 1 : 0;
$daid = intval($_GET['aid']);
$type = !empty($_GET['type']) ? $_GET['type'] : 'fixwr';
list($w, $h) = explode('x', $_GET['size']);
$dw = intval($w);
$dh = intval($h);
$thumbfile = 'image/'.helper_attach::makethumbpath($daid, $dw, $dh);$attachurl = helper_attach::attachpreurl();
function get_image_extension($filename){
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$rs = '';
if (!$finfo) {
return 'image';
}
$rs = finfo_file($finfo, $filename);
finfo_close($finfo);
return $rs;
}
if(!$nocache) {
if(file_exists($_G['setting']['attachdir'].$thumbfile)) {
dheader('location: '.$attachurl.$thumbfile);
}
}
define('NOROBOT', TRUE);
$id = !empty($_GET['atid']) ? $_GET['atid'] : $daid;
if(dsign($id.'|'.$dw.'|'.$dh) != $_GET['key']) {
dheader('location: '.$_G['siteurl'].'static/image/common/none.gif');
}
if($attach = C::t('forum_attachment_n')->fetch('aid:'.$daid, $daid, array(1, -1))) {
if(!$dw && !$dh && $attach['tid'] != $id) {
dheader('location: '.$_G['siteurl'].'static/image/common/none.gif');
}
dheader('Expires: '.gmdate('D, d M Y H:i:s', TIMESTAMP + 3600).' GMT');
if($attach['remote']) {
$filename = $_G['setting']['ftp']['attachurl'].'forum/'.$attach['attachment'];
dheader('Content-Type: image');
dheader('location: '.$_G['setting']['ftp']['attachurl'].'forum/'.$attach['attachment'].'?imageView2/1/w/'.$dw.'/h/'.$dh.'/format/jpg/interlace/0/q/80');
} else {
$filename = $_G['setting']['attachdir'].'forum/'.$attach['attachment'];
}
require_once libfile('class/image');
$img = new image;
if($img->Thumb($filename, $thumbfile, $w, $h, $type)) {
if($nocache) {
$mine = get_image_extension($_G['setting']['attachdir'].$thumbfile);
dheader('Content-Type: '.$mine);
@readfile($_G['setting']['attachdir'].$thumbfile);
//echo file_get_contents($_G['setting']['attachdir'].$thumbfile);
@unlink($_G['setting']['attachdir'].$thumbfile);
} else {
dheader('location: '.$attachurl.$thumbfile);
}
} else {
dheader('Content-Type: image');
@readfile($filename);
}
}
?>

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