1 files changed, 297 insertions, 0 deletions
diff --git a/vendor/sabre/dav/lib/DAV/TemporaryFileFilterPlugin.php b/vendor/sabre/dav/lib/DAV/TemporaryFileFilterPlugin.php
new file mode 100644
index 000000000..c5b8aa1ca
--- /dev/null
+++ b/vendor/sabre/dav/lib/DAV/TemporaryFileFilterPlugin.php
@@ -0,0 +1,297 @@
+<?php
+
+namespace Sabre\DAV;
+
+use Sabre\HTTP\RequestInterface;
+use Sabre\HTTP\ResponseInterface;
+use Sabre\HTTP\URLUtil;
+
+/**
+ * Temporary File Filter Plugin
+ *
+ * The purpose of this filter is to intercept some of the garbage files
+ * operation systems and applications tend to generate when mounting
+ * a WebDAV share as a disk.
+ *
+ * It will intercept these files and place them in a separate directory.
+ * these files are not deleted automatically, so it is adviceable to
+ * delete these after they are not accessed for 24 hours.
+ *
+ * Currently it supports:
+ *   * OS/X style resource forks and .DS_Store
+ *   * desktop.ini and Thumbs.db (windows)
+ *   * .*.swp (vim temporary files)
+ *   * .dat.* (smultron temporary files)
+ *
+ * Additional patterns can be added, by adding on to the
+ * temporaryFilePatterns property.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class TemporaryFileFilterPlugin extends ServerPlugin {
+
+    /**
+     * This is the list of patterns we intercept.
+     * If new patterns are added, they must be valid patterns for preg_match.
+     *
+     * @var array
+     */
+    public $temporaryFilePatterns = [
+        '/^\._(.*)$/',     // OS/X resource forks
+        '/^.DS_Store$/',   // OS/X custom folder settings
+        '/^desktop.ini$/', // Windows custom folder settings
+        '/^Thumbs.db$/',   // Windows thumbnail cache
+        '/^.(.*).swp$/',   // ViM temporary files
+        '/^\.dat(.*)$/',   // Smultron seems to create these
+        '/^~lock.(.*)#$/', // Windows 7 lockfiles
+    ];
+
+    /**
+     * A reference to the main Server class
+     *
+     * @var Sabre\DAV\Server
+     */
+    protected $server;
+
+    /**
+     * This is the directory where this plugin
+     * will store it's files.
+     *
+     * @var string
+     */
+    private $dataDir;
+
+    /**
+     * Creates the plugin.
+     *
+     * Make sure you specify a directory for your files. If you don't, we
+     * will use PHP's directory for session-storage instead, and you might
+     * not want that.
+     *
+     * @param string|null $dataDir
+     */
+    function __construct($dataDir = null) {
+
+        if (!$dataDir) $dataDir = ini_get('session.save_path') . '/sabredav/';
+        if (!is_dir($dataDir)) mkdir($dataDir);
+        $this->dataDir = $dataDir;
+
+    }
+
+    /**
+     * Initialize the plugin
+     *
+     * This is called automatically be the Server class after this plugin is
+     * added with Sabre\DAV\Server::addPlugin()
+     *
+     * @param Server $server
+     * @return void
+     */
+    function initialize(Server $server) {
+
+        $this->server = $server;
+        $server->on('beforeMethod',    [$this, 'beforeMethod']);
+        $server->on('beforeCreateFile', [$this, 'beforeCreateFile']);
+
+    }
+
+    /**
+     * This method is called before any HTTP method handler
+     *
+     * This method intercepts any GET, DELETE, PUT and PROPFIND calls to
+     * filenames that are known to match the 'temporary file' regex.
+     *
+     * @param RequestInterface $request
+     * @param ResponseInterface $response
+     * @return bool
+     */
+    function beforeMethod(RequestInterface $request, ResponseInterface $response) {
+
+        if (!$tempLocation = $this->isTempFile($request->getPath()))
+            return;
+
+        switch ($request->getMethod()) {
+            case 'GET' :
+                return $this->httpGet($request, $response, $tempLocation);
+            case 'PUT' :
+                return $this->httpPut($request, $response, $tempLocation);
+            case 'PROPFIND' :
+                return $this->httpPropfind($request, $response, $tempLocation);
+            case 'DELETE' :
+                return $this->httpDelete($request, $response, $tempLocation);
+        }
+        return;
+
+    }
+
+    /**
+     * This method is invoked if some subsystem creates a new file.
+     *
+     * This is used to deal with HTTP LOCK requests which create a new
+     * file.
+     *
+     * @param string $uri
+     * @param resource $data
+     * @param DAV\ICollection $parentNode
+     * @param bool $modified Should be set to true, if this event handler
+     *                       changed &$data.
+     * @return bool
+     */
+    function beforeCreateFile($uri, $data, $parent, $modified) {
+
+        if ($tempPath = $this->isTempFile($uri)) {
+
+            $hR = $this->server->httpResponse;
+            $hR->setHeader('X-Sabre-Temp', 'true');
+            file_put_contents($tempPath, $data);
+            return false;
+        }
+        return;
+
+    }
+
+    /**
+     * This method will check if the url matches the temporary file pattern
+     * if it does, it will return an path based on $this->dataDir for the
+     * temporary file storage.
+     *
+     * @param string $path
+     * @return bool|string
+     */
+    protected function isTempFile($path) {
+
+        // We're only interested in the basename.
+        list(, $tempPath) = URLUtil::splitPath($path);
+
+        foreach ($this->temporaryFilePatterns as $tempFile) {
+
+            if (preg_match($tempFile, $tempPath)) {
+                return $this->getDataDir() . '/sabredav_' . md5($path) . '.tempfile';
+            }
+
+        }
+
+        return false;
+
+    }
+
+
+    /**
+     * This method handles the GET method for temporary files.
+     * If the file doesn't exist, it will return false which will kick in
+     * the regular system for the GET method.
+     *
+     * @param RequestInterface $request
+     * @param ResponseInterface $hR
+     * @param string $tempLocation
+     * @return bool
+     */
+    function httpGet(RequestInterface $request, ResponseInterface $hR, $tempLocation) {
+
+        if (!file_exists($tempLocation)) return;
+
+        $hR->setHeader('Content-Type', 'application/octet-stream');
+        $hR->setHeader('Content-Length', filesize($tempLocation));
+        $hR->setHeader('X-Sabre-Temp', 'true');
+        $hR->setStatus(200);
+        $hR->setBody(fopen($tempLocation, 'r'));
+        return false;
+
+    }
+
+    /**
+     * This method handles the PUT method.
+     *
+     * @param RequestInterface $request
+     * @param ResponseInterface $hR
+     * @param string $tempLocation
+     * @return bool
+     */
+    function httpPut(RequestInterface $request, ResponseInterface $hR, $tempLocation) {
+
+        $hR->setHeader('X-Sabre-Temp', 'true');
+
+        $newFile = !file_exists($tempLocation);
+
+        if (!$newFile && ($this->server->httpRequest->getHeader('If-None-Match'))) {
+             throw new Exception\PreconditionFailed('The resource already exists, and an If-None-Match header was supplied');
+        }
+
+        file_put_contents($tempLocation, $this->server->httpRequest->getBody());
+        $hR->setStatus($newFile ? 201 : 200);
+        return false;
+
+    }
+
+    /**
+     * This method handles the DELETE method.
+     *
+     * If the file didn't exist, it will return false, which will make the
+     * standard HTTP DELETE handler kick in.
+     *
+     * @param RequestInterface $request
+     * @param ResponseInterface $hR
+     * @param string $tempLocation
+     * @return bool
+     */
+    function httpDelete(RequestInterface $request, ResponseInterface $hR, $tempLocation) {
+
+        if (!file_exists($tempLocation)) return;
+
+        unlink($tempLocation);
+        $hR->setHeader('X-Sabre-Temp', 'true');
+        $hR->setStatus(204);
+        return false;
+
+    }
+
+    /**
+     * This method handles the PROPFIND method.
+     *
+     * It's a very lazy method, it won't bother checking the request body
+     * for which properties were requested, and just sends back a default
+     * set of properties.
+     *
+     * @param RequestInterface $request
+     * @param ResponseInterface $hR
+     * @param string $tempLocation
+     * @return bool
+     */
+    function httpPropfind(RequestInterface $request, ResponseInterface $hR, $tempLocation) {
+
+        if (!file_exists($tempLocation)) return;
+
+        $hR->setHeader('X-Sabre-Temp', 'true');
+        $hR->setStatus(207);
+        $hR->setHeader('Content-Type', 'application/xml; charset=utf-8');
+
+        $properties = [
+            'href' => $request->getPath(),
+            200    => [
+                '{DAV:}getlastmodified'                 => new Xml\Property\GetLastModified(filemtime($tempLocation)),
+                '{DAV:}getcontentlength'                => filesize($tempLocation),
+                '{DAV:}resourcetype'                    => new Xml\Property\ResourceType(null),
+                '{' . Server::NS_SABREDAV . '}tempFile' => true,
+
+            ],
+        ];
+
+        $data = $this->server->generateMultiStatus([$properties]);
+        $hR->setBody($data);
+        return false;
+
+    }
+
+
+    /**
+     * This method returns the directory where the temporary files should be stored.
+     *
+     * @return string
+     */
+    protected function getDataDir()
+    {
+        return $this->dataDir;
+    }
+}