%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
namespace Intervention\Image;
use Closure;
use Intervention\Image\ImageManager;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Http\Response as IlluminateResponse;
use Config;
class ImageCacheController extends BaseController
{
/**
* Get HTTP response of either original image file or
* template applied file.
*
* @param string $template
* @param string $filename
* @return Illuminate\Http\Response
*/
public function getResponse($template, $filename)
{
switch (strtolower($template)) {
case 'original':
return $this->getOriginal($filename);
case 'download':
return $this->getDownload($filename);
default:
return $this->getImage($template, $filename);
}
}
/**
* Get HTTP response of template applied image file
*
* @param string $template
* @param string $filename
* @return Illuminate\Http\Response
*/
public function getImage($template, $filename)
{
$template = $this->getTemplate($template);
$path = $this->getImagePath($filename);
// image manipulation based on callback
$manager = new ImageManager(Config::get('image'));
$content = $manager->cache(function ($image) use ($template, $path) {
if ($template instanceof Closure) {
// build from closure callback template
$template($image->make($path));
} else {
// build from filter template
$image->make($path)->filter($template);
}
}, config('imagecache.lifetime'));
return $this->buildResponse($content);
}
/**
* Get HTTP response of original image file
*
* @param string $filename
* @return Illuminate\Http\Response
*/
public function getOriginal($filename)
{
$path = $this->getImagePath($filename);
return $this->buildResponse(file_get_contents($path));
}
/**
* Get HTTP response of original image as download
*
* @param string $filename
* @return Illuminate\Http\Response
*/
public function getDownload($filename)
{
$response = $this->getOriginal($filename);
return $response->header(
'Content-Disposition',
'attachment; filename=' . $filename
);
}
/**
* Returns corresponding template object from given template name
*
* @param string $template
* @return mixed
*/
private function getTemplate($template)
{
$template = config("imagecache.templates.{$template}");
switch (true) {
// closure template found
case is_callable($template):
return $template;
// filter template found
case class_exists($template):
return new $template;
default:
// template not found
abort(404);
break;
}
}
/**
* Returns full image path from given filename
*
* @param string $filename
* @return string
*/
private function getImagePath($filename)
{
// find file
foreach (config('imagecache.paths') as $path) {
// don't allow '..' in filenames
$image_path = $path.'/'.str_replace('..', '', $filename);
if (file_exists($image_path) && is_file($image_path)) {
// file found
return $image_path;
}
}
// file not found
abort(404);
}
/**
* Builds HTTP response from given image data
*
* @param string $content
* @return Illuminate\Http\Response
*/
private function buildResponse($content)
{
// define mime type
$mime = finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $content);
// return http response
return new IlluminateResponse($content, 200, array(
'Content-Type' => $mime,
'Cache-Control' => 'max-age='.(config('imagecache.lifetime')*60).', public',
'Etag' => md5($content)
));
}
}
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