nextcloud/3rdparty/Sabre/DAV/Browser/Plugin.php

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<?php
/**
* Browser Plugin
*
* This plugin provides a html representation, so that a WebDAV server may be accessed
* using a browser.
*
* The class intercepts GET requests to collection resources and generates a simple
* html index.
*
* @package Sabre
* @subpackage DAV
* @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
* @author Evert Pot (http://www.rooftopsolutions.nl/)
* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
*/
class Sabre_DAV_Browser_Plugin extends Sabre_DAV_ServerPlugin {
/**
* reference to server class
*
* @var Sabre_DAV_Server
*/
protected $server;
/**
* enableEditing
*
* @var bool
*/
protected $enablePost = true;
/**
* Creates the object.
*
* By default it will allow file creation and uploads.
* Specify the first argument as false to disable this
*
* @param bool $enablePost
* @return void
*/
public function __construct($enablePost=true) {
$this->enablePost = $enablePost;
}
/**
* Initializes the plugin and subscribes to events
*
* @param Sabre_DAV_Server $server
* @return void
*/
public function initialize(Sabre_DAV_Server $server) {
$this->server = $server;
$this->server->subscribeEvent('beforeMethod',array($this,'httpGetInterceptor'));
if ($this->enablePost) $this->server->subscribeEvent('unknownMethod',array($this,'httpPOSTHandler'));
}
/**
* This method intercepts GET requests to collections and returns the html
*
* @param string $method
* @return bool
*/
public function httpGetInterceptor($method, $uri) {
if ($method!='GET') return true;
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try {
$node = $this->server->tree->getNodeForPath($uri);
} catch (Sabre_DAV_Exception_FileNotFound $e) {
// We're simply stopping when the file isn't found to not interfere
// with other plugins.
return;
}
if ($node instanceof Sabre_DAV_IFile)
return;
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$this->server->httpResponse->sendStatus(200);
$this->server->httpResponse->setHeader('Content-Type','text/html; charset=utf-8');
$this->server->httpResponse->sendBody(
$this->generateDirectoryIndex($uri)
);
return false;
}
/**
* Handles POST requests for tree operations
*
* This method is not yet used.
*
* @param string $method
* @return bool
*/
public function httpPOSTHandler($method, $uri) {
if ($method!='POST') return true;
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if (isset($_POST['sabreAction'])) switch($_POST['sabreAction']) {
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case 'mkcol' :
if (isset($_POST['name']) && trim($_POST['name'])) {
// Using basename() because we won't allow slashes
list(, $folderName) = Sabre_DAV_URLUtil::splitPath(trim($_POST['name']));
$this->server->createDirectory($uri . '/' . $folderName);
}
break;
case 'put' :
if ($_FILES) $file = current($_FILES);
else break;
$newName = trim($file['name']);
list(, $newName) = Sabre_DAV_URLUtil::splitPath(trim($file['name']));
if (isset($_POST['name']) && trim($_POST['name']))
$newName = trim($_POST['name']);
// Making sure we only have a 'basename' component
list(, $newName) = Sabre_DAV_URLUtil::splitPath($newName);
if (is_uploaded_file($file['tmp_name'])) {
$parent = $this->server->tree->getNodeForPath(trim($uri,'/'));
$parent->createFile($newName,fopen($file['tmp_name'],'r'));
}
}
$this->server->httpResponse->setHeader('Location',$this->server->httpRequest->getUri());
return false;
}
/**
* Escapes a string for html.
*
* @param string $value
* @return void
*/
public function escapeHTML($value) {
return htmlspecialchars($value,ENT_QUOTES,'UTF-8');
}
/**
* Generates the html directory index for a given url
*
* @param string $path
* @return string
*/
public function generateDirectoryIndex($path) {
$html = "<html>
<head>
<title>Index for " . $this->escapeHTML($path) . "/ - SabreDAV " . Sabre_DAV_Version::VERSION . "</title>
<style type=\"text/css\"> body { Font-family: arial}</style>
</head>
<body>
<h1>Index for " . $this->escapeHTML($path) . "/</h1>
<table>
<tr><th>Name</th><th>Type</th><th>Size</th><th>Last modified</th></tr>
<tr><td colspan=\"4\"><hr /></td></tr>";
$files = $this->server->getPropertiesForPath($path,array(
'{DAV:}displayname',
'{DAV:}resourcetype',
'{DAV:}getcontenttype',
'{DAV:}getcontentlength',
'{DAV:}getlastmodified',
),1);
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$parent = $this->server->tree->getNodeForPath($path);
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if ($path) {
list($parentUri) = Sabre_DAV_URLUtil::splitPath($path);
$fullPath = Sabre_DAV_URLUtil::encodePath($this->server->getBaseUri() . $parentUri);
$html.= "<tr>
<td><a href=\"{$fullPath}\">..</a></td>
<td>[parent]</td>
<td></td>
<td></td>
</tr>";
}
foreach($files as $k=>$file) {
// This is the current directory, we can skip it
if (rtrim($file['href'],'/')==$path) continue;
list(, $name) = Sabre_DAV_URLUtil::splitPath($file['href']);
$type = null;
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if (isset($file[200]['{DAV:}resourcetype'])) {
$type = $file[200]['{DAV:}resourcetype']->getValue();
// resourcetype can have multiple values
if (!is_array($type)) $type = array($type);
foreach($type as $k=>$v) {
// Some name mapping is preferred
switch($v) {
case '{DAV:}collection' :
$type[$k] = 'Collection';
break;
case '{DAV:}principal' :
$type[$k] = 'Principal';
break;
case '{urn:ietf:params:xml:ns:carddav}addressbook' :
$type[$k] = 'Addressbook';
break;
case '{urn:ietf:params:xml:ns:caldav}calendar' :
$type[$k] = 'Calendar';
break;
}
}
$type = implode(', ', $type);
}
// If no resourcetype was found, we attempt to use
// the contenttype property
if (!$type && isset($file[200]['{DAV:}getcontenttype'])) {
$type = $file[200]['{DAV:}getcontenttype'];
}
if (!$type) $type = 'Unknown';
$size = isset($file[200]['{DAV:}getcontentlength'])?(int)$file[200]['{DAV:}getcontentlength']:'';
$lastmodified = isset($file[200]['{DAV:}getlastmodified'])?$file[200]['{DAV:}getlastmodified']->getTime()->format(DateTime::ATOM):'';
$fullPath = Sabre_DAV_URLUtil::encodePath('/' . trim($this->server->getBaseUri() . ($path?$path . '/':'') . $name,'/'));
$displayName = isset($file[200]['{DAV:}displayname'])?$file[200]['{DAV:}displayname']:$name;
$name = $this->escapeHTML($name);
$displayName = $this->escapeHTML($displayName);
$type = $this->escapeHTML($type);
$html.= "<tr>
<td><a href=\"{$fullPath}\">{$displayName}</a></td>
<td>{$type}</td>
<td>{$size}</td>
<td>{$lastmodified}</td>
</tr>";
}
$html.= "<tr><td colspan=\"4\"><hr /></td></tr>";
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if ($this->enablePost && $parent instanceof Sabre_DAV_ICollection) {
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$html.= '<tr><td><form method="post" action="">
<h3>Create new folder</h3>
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<input type="hidden" name="sabreAction" value="mkcol" />
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Name: <input type="text" name="name" /><br />
<input type="submit" value="create" />
</form>
<form method="post" action="" enctype="multipart/form-data">
<h3>Upload file</h3>
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<input type="hidden" name="sabreAction" value="put" />
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Name (optional): <input type="text" name="name" /><br />
File: <input type="file" name="file" /><br />
<input type="submit" value="upload" />
</form>
</td></tr>';
}
$html.= "</table>
<address>Generated by SabreDAV " . Sabre_DAV_Version::VERSION ."-". Sabre_DAV_Version::STABILITY . " (c)2007-2011 <a href=\"http://code.google.com/p/sabredav/\">http://code.google.com/p/sabredav/</a></address>
</body>
</html>";
return $html;
}
}