281 lines
8.5 KiB
PHP
281 lines
8.5 KiB
PHP
<?php
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/**
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpFoundation;
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use Symfony\Component\HttpFoundation\File\File;
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use Symfony\Component\HttpFoundation\File\Exception\FileException;
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/**
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* BinaryFileResponse represents an HTTP response delivering a file.
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*
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* @author Niklas Fiekas <niklas.fiekas@tu-clausthal.de>
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* @author stealth35 <stealth35-php@live.fr>
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* @author Igor Wiedler <igor@wiedler.ch>
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* @author Jordan Alliot <jordan.alliot@gmail.com>
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* @author Sergey Linnik <linniksa@gmail.com>
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*/
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class BinaryFileResponse extends Response
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{
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protected static $trustXSendfileTypeHeader = false;
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protected $file;
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protected $offset;
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protected $maxlen;
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/**
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* Constructor.
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*
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* @param SplFileInfo|string $file The file to stream
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* @param integer $status The response status code
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* @param array $headers An array of response headers
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* @param boolean $public Files are public by default
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* @param null|string $contentDisposition The type of Content-Disposition to set automatically with the filename
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* @param boolean $autoEtag Whether the ETag header should be automatically set
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* @param boolean $autoLastModified Whether the Last-Modified header should be automatically set
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*/
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public function __construct($file, $status = 200, $headers = array(), $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
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{
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parent::__construct(null, $status, $headers);
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$this->setFile($file, $contentDisposition, $autoEtag, $autoLastModified);
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if ($public) {
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$this->setPublic();
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}
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}
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/**
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* {@inheritdoc}
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*/
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public static function create($file = null, $status = 200, $headers = array(), $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
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{
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return new static($file, $status, $headers, $public, $contentDisposition, $autoEtag, $autoLastModified);
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}
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/**
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* Sets the file to stream.
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*
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* @param SplFileInfo|string $file The file to stream
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* @param string $contentDisposition
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* @param Boolean $autoEtag
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* @param Boolean $autoLastModified
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*
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* @return BinaryFileResponse
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*
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* @throws FileException
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*/
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public function setFile($file, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
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{
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$file = new File((string) $file);
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if (!$file->isReadable()) {
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throw new FileException('File must be readable.');
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}
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$this->file = $file;
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if ($autoEtag) {
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$this->setAutoEtag();
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}
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if ($autoLastModified) {
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$this->setAutoLastModified();
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}
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if ($contentDisposition) {
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$this->setContentDisposition($contentDisposition);
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}
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return $this;
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}
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/**
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* Gets the file.
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*
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* @return File The file to stream
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*/
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public function getFile()
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{
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return $this->file;
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}
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/**
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* Automatically sets the Last-Modified header according the file modification date.
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*/
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public function setAutoLastModified()
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{
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$this->setLastModified(\DateTime::createFromFormat('U', $this->file->getMTime()));
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return $this;
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}
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/**
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* Automatically sets the ETag header according to the checksum of the file.
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*/
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public function setAutoEtag()
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{
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$this->setEtag(sha1_file($this->file->getPathname()));
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return $this;
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}
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/**
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* Sets the Content-Disposition header with the given filename.
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*
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* @param string $disposition ResponseHeaderBag::DISPOSITION_INLINE or ResponseHeaderBag::DISPOSITION_ATTACHMENT
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* @param string $filename Optionally use this filename instead of the real name of the file
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* @param string $filenameFallback A fallback filename, containing only ASCII characters. Defaults to an automatically encoded filename
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*
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* @return BinaryFileResponse
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*/
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public function setContentDisposition($disposition, $filename = '', $filenameFallback = '')
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{
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if ($filename === '') {
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$filename = $this->file->getFilename();
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}
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$dispositionHeader = $this->headers->makeDisposition($disposition, $filename, $filenameFallback);
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$this->headers->set('Content-Disposition', $dispositionHeader);
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return $this;
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}
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/**
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* {@inheritdoc}
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*/
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public function prepare(Request $request)
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{
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$this->headers->set('Content-Length', $this->file->getSize());
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$this->headers->set('Accept-Ranges', 'bytes');
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$this->headers->set('Content-Transfer-Encoding', 'binary');
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if (!$this->headers->has('Content-Type')) {
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$this->headers->set('Content-Type', $this->file->getMimeType() ?: 'application/octet-stream');
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}
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if ('HTTP/1.0' != $request->server->get('SERVER_PROTOCOL')) {
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$this->setProtocolVersion('1.1');
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}
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$this->ensureIEOverSSLCompatibility($request);
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$this->offset = 0;
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$this->maxlen = -1;
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if (self::$trustXSendfileTypeHeader && $request->headers->has('X-Sendfile-Type')) {
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// Use X-Sendfile, do not send any content.
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$type = $request->headers->get('X-Sendfile-Type');
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$path = $this->file->getRealPath();
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if (strtolower($type) == 'x-accel-redirect') {
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// Do X-Accel-Mapping substitutions.
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foreach (explode(',', $request->headers->get('X-Accel-Mapping', '')) as $mapping) {
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$mapping = explode('=', $mapping, 2);
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if (2 == count($mapping)) {
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$location = trim($mapping[0]);
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$pathPrefix = trim($mapping[1]);
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if (substr($path, 0, strlen($pathPrefix)) == $pathPrefix) {
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$path = $location.substr($path, strlen($pathPrefix));
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break;
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}
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}
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}
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}
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$this->headers->set($type, $path);
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$this->maxlen = 0;
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} elseif ($request->headers->has('Range')) {
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// Process the range headers.
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if (!$request->headers->has('If-Range') || $this->getEtag() == $request->headers->get('If-Range')) {
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$range = $request->headers->get('Range');
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$fileSize = $this->file->getSize();
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list($start, $end) = explode('-', substr($range, 6), 2) + array(0);
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$end = ('' === $end) ? $fileSize - 1 : (int) $end;
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if ('' === $start) {
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$start = $fileSize - $end;
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$end = $fileSize - 1;
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} else {
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$start = (int) $start;
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}
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$start = max($start, 0);
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$end = min($end, $fileSize - 1);
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$this->maxlen = $end < $fileSize ? $end - $start + 1 : -1;
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$this->offset = $start;
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$this->setStatusCode(206);
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$this->headers->set('Content-Range', sprintf('bytes %s-%s/%s', $start, $end, $fileSize));
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}
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}
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return $this;
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}
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/**
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* Sends the file.
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*/
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public function sendContent()
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{
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if (!$this->isSuccessful()) {
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parent::sendContent();
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return;
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}
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if (0 === $this->maxlen) {
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return;
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}
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$out = fopen('php://output', 'wb');
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$file = fopen($this->file->getPathname(), 'rb');
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stream_copy_to_stream($file, $out, $this->maxlen, $this->offset);
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fclose($out);
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fclose($file);
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}
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/**
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* {@inheritdoc}
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*
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* @throws \LogicException when the content is not null
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*/
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public function setContent($content)
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{
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if (null !== $content) {
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throw new \LogicException('The content cannot be set on a BinaryFileResponse instance.');
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}
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}
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/**
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* {@inheritdoc}
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*
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* @return false
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*/
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public function getContent()
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{
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return false;
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}
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/**
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* Trust X-Sendfile-Type header.
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*/
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public static function trustXSendfileTypeHeader()
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{
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self::$trustXSendfileTypeHeader = true;
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}
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}
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