405 lines
13 KiB
PHP
405 lines
13 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
|
*
|
|
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
|
|
* @author Bart Visscher <bartv@thisnet.nl>
|
|
* @author Björn Schießle <bjoern@schiessle.org>
|
|
* @author Clark Tomlinson <fallen013@gmail.com>
|
|
* @author Frank Karlitschek <frank@karlitschek.de>
|
|
* @author Jakob Sack <mail@jakobsack.de>
|
|
* @author Joas Schilling <coding@schilljs.com>
|
|
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
|
|
* @author Ko- <k.stoffelen@cs.ru.nl>
|
|
* @author Lukas Reschke <lukas@statuscode.ch>
|
|
* @author Michael Gapczynski <GapczynskiM@gmail.com>
|
|
* @author Nicolai Ehemann <en@enlightened.de>
|
|
* @author noveens <noveen.sachdeva@research.iiit.ac.in>
|
|
* @author Piotr Filiciak <piotr@filiciak.pl>
|
|
* @author Robin Appelman <robin@icewind.nl>
|
|
* @author Robin McCorkell <robin@mccorkell.me.uk>
|
|
* @author Thibaut GRIDEL <tgridel@free.fr>
|
|
* @author Thomas Müller <thomas.mueller@tmit.eu>
|
|
* @author Victor Dubiniuk <dubiniuk@owncloud.com>
|
|
* @author Vincent Petry <pvince81@owncloud.com>
|
|
*
|
|
* @license AGPL-3.0
|
|
*
|
|
* This code is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License, version 3,
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License, version 3,
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>
|
|
*
|
|
*/
|
|
|
|
use OC\Files\View;
|
|
use OC\Streamer;
|
|
use OCP\ILogger;
|
|
use OCP\Lock\ILockingProvider;
|
|
|
|
/**
|
|
* Class for file server access
|
|
*
|
|
*/
|
|
class OC_Files {
|
|
const FILE = 1;
|
|
const ZIP_FILES = 2;
|
|
const ZIP_DIR = 3;
|
|
|
|
const UPLOAD_MIN_LIMIT_BYTES = 1048576; // 1 MiB
|
|
|
|
|
|
private static $multipartBoundary = '';
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
private static function getBoundary() {
|
|
if (empty(self::$multipartBoundary)) {
|
|
self::$multipartBoundary = md5(mt_rand());
|
|
}
|
|
return self::$multipartBoundary;
|
|
}
|
|
|
|
/**
|
|
* @param string $filename
|
|
* @param string $name
|
|
* @param array $rangeArray ('from'=>int,'to'=>int), ...
|
|
*/
|
|
private static function sendHeaders($filename, $name, array $rangeArray) {
|
|
OC_Response::setContentDispositionHeader($name, 'attachment');
|
|
header('Content-Transfer-Encoding: binary', true);
|
|
header('Pragma: public');// enable caching in IE
|
|
header('Expires: 0');
|
|
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
|
|
$fileSize = \OC\Files\Filesystem::filesize($filename);
|
|
$type = \OC::$server->getMimeTypeDetector()->getSecureMimeType(\OC\Files\Filesystem::getMimeType($filename));
|
|
if ($fileSize > -1) {
|
|
if (!empty($rangeArray)) {
|
|
http_response_code(206);
|
|
header('Accept-Ranges: bytes', true);
|
|
if (count($rangeArray) > 1) {
|
|
$type = 'multipart/byteranges; boundary='.self::getBoundary();
|
|
// no Content-Length header here
|
|
}
|
|
else {
|
|
header(sprintf('Content-Range: bytes %d-%d/%d', $rangeArray[0]['from'], $rangeArray[0]['to'], $fileSize), true);
|
|
OC_Response::setContentLengthHeader($rangeArray[0]['to'] - $rangeArray[0]['from'] + 1);
|
|
}
|
|
}
|
|
else {
|
|
OC_Response::setContentLengthHeader($fileSize);
|
|
}
|
|
}
|
|
header('Content-Type: '.$type, true);
|
|
}
|
|
|
|
/**
|
|
* return the content of a file or return a zip file containing multiple files
|
|
*
|
|
* @param string $dir
|
|
* @param string $files ; separated list of files to download
|
|
* @param array $params ; 'head' boolean to only send header of the request ; 'range' http range header
|
|
*/
|
|
public static function get($dir, $files, $params = null) {
|
|
|
|
$view = \OC\Files\Filesystem::getView();
|
|
$getType = self::FILE;
|
|
$filename = $dir;
|
|
try {
|
|
|
|
if (is_array($files) && count($files) === 1) {
|
|
$files = $files[0];
|
|
}
|
|
|
|
if (!is_array($files)) {
|
|
$filename = $dir . '/' . $files;
|
|
if (!$view->is_dir($filename)) {
|
|
self::getSingleFile($view, $dir, $files, is_null($params) ? array() : $params);
|
|
return;
|
|
}
|
|
}
|
|
|
|
$name = 'download';
|
|
if (is_array($files)) {
|
|
$getType = self::ZIP_FILES;
|
|
$basename = basename($dir);
|
|
if ($basename) {
|
|
$name = $basename;
|
|
}
|
|
|
|
$filename = $dir . '/' . $name;
|
|
} else {
|
|
$filename = $dir . '/' . $files;
|
|
$getType = self::ZIP_DIR;
|
|
// downloading root ?
|
|
if ($files !== '') {
|
|
$name = $files;
|
|
}
|
|
}
|
|
|
|
self::lockFiles($view, $dir, $files);
|
|
|
|
/* Calculate filesize and number of files */
|
|
if ($getType === self::ZIP_FILES) {
|
|
$fileInfos = array();
|
|
$fileSize = 0;
|
|
foreach ($files as $file) {
|
|
$fileInfo = \OC\Files\Filesystem::getFileInfo($dir . '/' . $file);
|
|
$fileSize += $fileInfo->getSize();
|
|
$fileInfos[] = $fileInfo;
|
|
}
|
|
$numberOfFiles = self::getNumberOfFiles($fileInfos);
|
|
} elseif ($getType === self::ZIP_DIR) {
|
|
$fileInfo = \OC\Files\Filesystem::getFileInfo($dir . '/' . $files);
|
|
$fileSize = $fileInfo->getSize();
|
|
$numberOfFiles = self::getNumberOfFiles(array($fileInfo));
|
|
}
|
|
|
|
$streamer = new Streamer(\OC::$server->getRequest(), $fileSize, $numberOfFiles);
|
|
OC_Util::obEnd();
|
|
|
|
$streamer->sendHeaders($name);
|
|
$executionTime = (int)OC::$server->getIniWrapper()->getNumeric('max_execution_time');
|
|
if (strpos(@ini_get('disable_functions'), 'set_time_limit') === false) {
|
|
@set_time_limit(0);
|
|
}
|
|
ignore_user_abort(true);
|
|
|
|
if ($getType === self::ZIP_FILES) {
|
|
foreach ($files as $file) {
|
|
$file = $dir . '/' . $file;
|
|
if (\OC\Files\Filesystem::is_file($file)) {
|
|
$fileSize = \OC\Files\Filesystem::filesize($file);
|
|
$fileTime = \OC\Files\Filesystem::filemtime($file);
|
|
$fh = \OC\Files\Filesystem::fopen($file, 'r');
|
|
$streamer->addFileFromStream($fh, basename($file), $fileSize, $fileTime);
|
|
fclose($fh);
|
|
} elseif (\OC\Files\Filesystem::is_dir($file)) {
|
|
$streamer->addDirRecursive($file);
|
|
}
|
|
}
|
|
} elseif ($getType === self::ZIP_DIR) {
|
|
$file = $dir . '/' . $files;
|
|
$streamer->addDirRecursive($file);
|
|
}
|
|
$streamer->finalize();
|
|
set_time_limit($executionTime);
|
|
self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
|
|
} catch (\OCP\Lock\LockedException $ex) {
|
|
self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
|
|
OC::$server->getLogger()->logException($ex);
|
|
$l = \OC::$server->getL10N('core');
|
|
$hint = method_exists($ex, 'getHint') ? $ex->getHint() : '';
|
|
\OC_Template::printErrorPage($l->t('File is currently busy, please try again later'), $hint, 200);
|
|
} catch (\OCP\Files\ForbiddenException $ex) {
|
|
self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
|
|
OC::$server->getLogger()->logException($ex);
|
|
$l = \OC::$server->getL10N('core');
|
|
\OC_Template::printErrorPage($l->t('Can\'t read file'), $ex->getMessage(), 200);
|
|
} catch (\Exception $ex) {
|
|
self::unlockAllTheFiles($dir, $files, $getType, $view, $filename);
|
|
OC::$server->getLogger()->logException($ex);
|
|
$l = \OC::$server->getL10N('core');
|
|
$hint = method_exists($ex, 'getHint') ? $ex->getHint() : '';
|
|
\OC_Template::printErrorPage($l->t('Can\'t read file'), $hint, 200);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $rangeHeaderPos
|
|
* @param int $fileSize
|
|
* @return array $rangeArray ('from'=>int,'to'=>int), ...
|
|
*/
|
|
private static function parseHttpRangeHeader($rangeHeaderPos, $fileSize) {
|
|
$rArray=explode(',', $rangeHeaderPos);
|
|
$minOffset = 0;
|
|
$ind = 0;
|
|
|
|
$rangeArray = array();
|
|
|
|
foreach ($rArray as $value) {
|
|
$ranges = explode('-', $value);
|
|
if (is_numeric($ranges[0])) {
|
|
if ($ranges[0] < $minOffset) { // case: bytes=500-700,601-999
|
|
$ranges[0] = $minOffset;
|
|
}
|
|
if ($ind > 0 && $rangeArray[$ind-1]['to']+1 == $ranges[0]) { // case: bytes=500-600,601-999
|
|
$ind--;
|
|
$ranges[0] = $rangeArray[$ind]['from'];
|
|
}
|
|
}
|
|
|
|
if (is_numeric($ranges[0]) && is_numeric($ranges[1]) && $ranges[0] < $fileSize && $ranges[0] <= $ranges[1]) {
|
|
// case: x-x
|
|
if ($ranges[1] >= $fileSize) {
|
|
$ranges[1] = $fileSize-1;
|
|
}
|
|
$rangeArray[$ind++] = array( 'from' => $ranges[0], 'to' => $ranges[1], 'size' => $fileSize );
|
|
$minOffset = $ranges[1] + 1;
|
|
if ($minOffset >= $fileSize) {
|
|
break;
|
|
}
|
|
}
|
|
elseif (is_numeric($ranges[0]) && $ranges[0] < $fileSize) {
|
|
// case: x-
|
|
$rangeArray[$ind++] = array( 'from' => $ranges[0], 'to' => $fileSize-1, 'size' => $fileSize );
|
|
break;
|
|
}
|
|
elseif (is_numeric($ranges[1])) {
|
|
// case: -x
|
|
if ($ranges[1] > $fileSize) {
|
|
$ranges[1] = $fileSize;
|
|
}
|
|
$rangeArray[$ind++] = array( 'from' => $fileSize-$ranges[1], 'to' => $fileSize-1, 'size' => $fileSize );
|
|
break;
|
|
}
|
|
}
|
|
return $rangeArray;
|
|
}
|
|
|
|
/**
|
|
* @param View $view
|
|
* @param string $name
|
|
* @param string $dir
|
|
* @param array $params ; 'head' boolean to only send header of the request ; 'range' http range header
|
|
*/
|
|
private static function getSingleFile($view, $dir, $name, $params) {
|
|
$filename = $dir . '/' . $name;
|
|
OC_Util::obEnd();
|
|
$view->lockFile($filename, ILockingProvider::LOCK_SHARED);
|
|
|
|
$rangeArray = array();
|
|
|
|
if (isset($params['range']) && substr($params['range'], 0, 6) === 'bytes=') {
|
|
$rangeArray = self::parseHttpRangeHeader(substr($params['range'], 6),
|
|
\OC\Files\Filesystem::filesize($filename));
|
|
}
|
|
|
|
if (\OC\Files\Filesystem::isReadable($filename)) {
|
|
self::sendHeaders($filename, $name, $rangeArray);
|
|
} elseif (!\OC\Files\Filesystem::file_exists($filename)) {
|
|
http_response_code(404);
|
|
$tmpl = new OC_Template('', '404', 'guest');
|
|
$tmpl->printPage();
|
|
exit();
|
|
} else {
|
|
http_response_code(403);
|
|
die('403 Forbidden');
|
|
}
|
|
if (isset($params['head']) && $params['head']) {
|
|
return;
|
|
}
|
|
if (!empty($rangeArray)) {
|
|
try {
|
|
if (count($rangeArray) == 1) {
|
|
$view->readfilePart($filename, $rangeArray[0]['from'], $rangeArray[0]['to']);
|
|
}
|
|
else {
|
|
// check if file is seekable (if not throw UnseekableException)
|
|
// we have to check it before body contents
|
|
$view->readfilePart($filename, $rangeArray[0]['size'], $rangeArray[0]['size']);
|
|
|
|
$type = \OC::$server->getMimeTypeDetector()->getSecureMimeType(\OC\Files\Filesystem::getMimeType($filename));
|
|
|
|
foreach ($rangeArray as $range) {
|
|
echo "\r\n--".self::getBoundary()."\r\n".
|
|
"Content-type: ".$type."\r\n".
|
|
"Content-range: bytes ".$range['from']."-".$range['to']."/".$range['size']."\r\n\r\n";
|
|
$view->readfilePart($filename, $range['from'], $range['to']);
|
|
}
|
|
echo "\r\n--".self::getBoundary()."--\r\n";
|
|
}
|
|
} catch (\OCP\Files\UnseekableException $ex) {
|
|
// file is unseekable
|
|
header_remove('Accept-Ranges');
|
|
header_remove('Content-Range');
|
|
http_response_code(200);
|
|
self::sendHeaders($filename, $name, array());
|
|
$view->readfile($filename);
|
|
}
|
|
}
|
|
else {
|
|
$view->readfile($filename);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the total (recursive) number of files and folders in the given
|
|
* FileInfos.
|
|
*
|
|
* @param \OCP\Files\FileInfo[] $fileInfos the FileInfos to count
|
|
* @return int the total number of files and folders
|
|
*/
|
|
private static function getNumberOfFiles($fileInfos) {
|
|
$numberOfFiles = 0;
|
|
|
|
$view = new View();
|
|
|
|
while ($fileInfo = array_pop($fileInfos)) {
|
|
$numberOfFiles++;
|
|
|
|
if ($fileInfo->getType() === \OCP\Files\FileInfo::TYPE_FOLDER) {
|
|
$fileInfos = array_merge($fileInfos, $view->getDirectoryContent($fileInfo->getPath()));
|
|
}
|
|
}
|
|
|
|
return $numberOfFiles;
|
|
}
|
|
|
|
/**
|
|
* @param View $view
|
|
* @param string $dir
|
|
* @param string[]|string $files
|
|
*/
|
|
public static function lockFiles($view, $dir, $files) {
|
|
if (!is_array($files)) {
|
|
$file = $dir . '/' . $files;
|
|
$files = [$file];
|
|
}
|
|
foreach ($files as $file) {
|
|
$file = $dir . '/' . $file;
|
|
$view->lockFile($file, ILockingProvider::LOCK_SHARED);
|
|
if ($view->is_dir($file)) {
|
|
$contents = $view->getDirectoryContent($file);
|
|
$contents = array_map(function($fileInfo) use ($file) {
|
|
/** @var \OCP\Files\FileInfo $fileInfo */
|
|
return $file . '/' . $fileInfo->getName();
|
|
}, $contents);
|
|
self::lockFiles($view, $dir, $contents);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $dir
|
|
* @param $files
|
|
* @param integer $getType
|
|
* @param View $view
|
|
* @param string $filename
|
|
*/
|
|
private static function unlockAllTheFiles($dir, $files, $getType, $view, $filename) {
|
|
if ($getType === self::FILE) {
|
|
$view->unlockFile($filename, ILockingProvider::LOCK_SHARED);
|
|
}
|
|
if ($getType === self::ZIP_FILES) {
|
|
foreach ($files as $file) {
|
|
$file = $dir . '/' . $file;
|
|
$view->unlockFile($file, ILockingProvider::LOCK_SHARED);
|
|
}
|
|
}
|
|
if ($getType === self::ZIP_DIR) {
|
|
$file = $dir . '/' . $files;
|
|
$view->unlockFile($file, ILockingProvider::LOCK_SHARED);
|
|
}
|
|
}
|
|
|
|
}
|