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[stable16] Use File Node API for more download cases, skip unreadable files #18489

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merged 3 commits into from
Dec 23, 2019
Merged

[stable16] Use File Node API for more download cases, skip unreadable files #18489

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38184ca
Use files node API for single file downloads
juliusknorr Nov 20, 2019
2989732
use Nodes API for zip streaming
blizzz Dec 12, 2019
b67980b
when downloading from web, skip files that are not accessible
blizzz Dec 16, 2019
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53 changes: 36 additions & 17 deletions lib/private/Streamer.php
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,12 @@

namespace OC;

use OC\Files\Filesystem;
use OCP\Files\File;
use OCP\Files\Folder;
use OCP\Files\InvalidPathException;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\IRequest;
use ownCloud\TarStreamer\TarStreamer;
use ZipStreamer\ZipStreamer;
Expand Down Expand Up @@ -75,23 +81,25 @@ public function __construct(IRequest $request, int $size, int $numberOfFiles){
$this->streamerInstance = new ZipStreamer(['zip64' => PHP_INT_SIZE !== 4]);
}
}

/**
* Send HTTP headers
* @param string $name
* @param string $name
*/
public function sendHeaders($name){
$extension = $this->streamerInstance instanceof ZipStreamer ? '.zip' : '.tar';
$fullName = $name . $extension;
$this->streamerInstance->sendHeaders($fullName);
}

/**
* Stream directory recursively
* @param string $dir
* @param string $internalDir
*
* @throws NotFoundException
* @throws NotPermittedException
* @throws InvalidPathException
*/
public function addDirRecursive($dir, $internalDir='') {
public function addDirRecursive(string $dir, string $internalDir = ''): void {
$dirname = basename($dir);
$rootDir = $internalDir . $dirname;
if (!empty($rootDir)) {
Expand All @@ -101,22 +109,33 @@ public function addDirRecursive($dir, $internalDir='') {
// prevent absolute dirs
$internalDir = ltrim($internalDir, '/');

$files= \OC\Files\Filesystem::getDirectoryContent($dir);
$userFolder = \OC::$server->getRootFolder()->get(Filesystem::getRoot());
/** @var Folder $dirNode */
$dirNode = $userFolder->get($dir);
$files = $dirNode->getDirectoryListing();

foreach($files as $file) {
$filename = $file['name'];
$file = $dir . '/' . $filename;
if(\OC\Files\Filesystem::is_file($file)) {
$filesize = \OC\Files\Filesystem::filesize($file);
$fileTime = \OC\Files\Filesystem::filemtime($file);
$fh = \OC\Files\Filesystem::fopen($file, 'r');
$this->addFileFromStream($fh, $internalDir . $filename, $filesize, $fileTime);
if($file instanceof File) {
try {
$fh = $file->fopen('r');
} catch (NotPermittedException $e) {
continue;
}
$this->addFileFromStream(
$fh,
$internalDir . $file->getName(),
$file->getSize(),
$file->getMTime()
);
fclose($fh);
}elseif(\OC\Files\Filesystem::is_dir($file)) {
$this->addDirRecursive($file, $internalDir);
} elseif ($file instanceof Folder) {
if($file->isReadable()) {
$this->addDirRecursive($dir . '/' . $file->getName(), $internalDir);
}
}
}
}

/**
* Add a file to the archive at the specified location and file name.
*
Expand Down
50 changes: 34 additions & 16 deletions lib/private/legacy/files.php
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Original file line number Diff line number Diff line change
Expand Up @@ -180,7 +180,11 @@ public static function get($dir, $files, $params = null) {
$userFolder = \OC::$server->getRootFolder()->get(\OC\Files\Filesystem::getRoot());
$file = $userFolder->get($file);
if($file instanceof \OC\Files\Node\File) {
$fh = $file->fopen('r');
try {
$fh = $file->fopen('r');
} catch (\OCP\Files\NotPermittedException $e) {
continue;
}
$fileSize = $file->getSize();
$fileTime = $file->getMTime();
} else {
Expand Down Expand Up @@ -284,30 +288,44 @@ private static function parseHttpRangeHeader($rangeHeaderPos, $fileSize) {
*/
private static function getSingleFile($view, $dir, $name, $params) {
$filename = $dir . '/' . $name;
OC_Util::obEnd();
$view->lockFile($filename, ILockingProvider::LOCK_SHARED);

$rangeArray = array();
$file = null;

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)) {
try {
$userFolder = \OC::$server->getRootFolder()->get(\OC\Files\Filesystem::getRoot());
$file = $userFolder->get($filename);
if(!$file instanceof \OC\Files\Node\File || !$file->isReadable()) {
http_response_code(403);
die('403 Forbidden');
}
$fileSize = $file->getSize();
} catch (\OCP\Files\NotPermittedException $e) {
http_response_code(403);
die('403 Forbidden');
} catch (\OCP\Files\InvalidPathException $e) {
http_response_code(403);
die('403 Forbidden');
} catch (\OCP\Files\NotFoundException $e) {
http_response_code(404);
$tmpl = new OC_Template('', '404', 'guest');
$tmpl->printPage();
exit();
} else {
http_response_code(403);
die('403 Forbidden');
}

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), $fileSize);
}

self::sendHeaders($filename, $name, $rangeArray);

if (isset($params['head']) && $params['head']) {
return;
}

if (!empty($rangeArray)) {
try {
if (count($rangeArray) == 1) {
Expand Down