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<?php
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/**
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* Browser Plugin
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*
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* This plugin provides a html representation, so that a WebDAV server may be accessed
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* using a browser.
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*
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* The class intercepts GET requests to collection resources and generates a simple
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* html index.
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*
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* @package Sabre
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* @subpackage DAV
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* @copyright Copyright (C) 2007-2010 Rooftop Solutions. All rights reserved.
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* @author Evert Pot (http://www.rooftopsolutions.nl/)
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* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
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*/
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class Sabre_DAV_Browser_Plugin extends Sabre_DAV_ServerPlugin {
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/**
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* reference to server class
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*
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* @var Sabre_DAV_Server
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*/
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protected $server;
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/**
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* enableEditing
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*
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* @var bool
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*/
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protected $enablePost = true;
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/**
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* Creates the object.
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*
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* By default it will allow file creation and uploads.
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* Specify the first argument as false to disable this
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*
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* @param bool $enablePost
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* @return void
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*/
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public function __construct($enablePost=true) {
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$this->enablePost = $enablePost;
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}
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/**
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* Initializes the plugin and subscribes to events
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*
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* @param Sabre_DAV_Server $server
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* @return void
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*/
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public function initialize(Sabre_DAV_Server $server) {
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$this->server = $server;
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$this->server->subscribeEvent('beforeMethod',array($this,'httpGetInterceptor'));
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if ($this->enablePost) $this->server->subscribeEvent('unknownMethod',array($this,'httpPOSTHandler'));
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}
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/**
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* This method intercepts GET requests to collections and returns the html
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*
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* @param string $method
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* @return bool
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*/
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public function httpGetInterceptor($method, $uri) {
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if ($method!='GET') return true;
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$node = $this->server->tree->getNodeForPath($uri);
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if ($node instanceof Sabre_DAV_IFile) return true;
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$this->server->httpResponse->sendStatus(200);
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$this->server->httpResponse->setHeader('Content-Type','text/html; charset=utf-8');
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$this->server->httpResponse->sendBody(
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$this->generateDirectoryIndex($uri)
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);
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return false;
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}
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/**
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* Handles POST requests for tree operations
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*
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* This method is not yet used.
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*
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* @param string $method
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* @return bool
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*/
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public function httpPOSTHandler($method, $uri) {
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if ($method!='POST') return true;
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if (isset($_POST['action'])) switch($_POST['action']) {
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case 'mkcol' :
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if (isset($_POST['name']) && trim($_POST['name'])) {
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// Using basename() because we won't allow slashes
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list(, $folderName) = Sabre_DAV_URLUtil::splitPath(trim($_POST['name']));
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$this->server->createDirectory($uri . '/' . $folderName);
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}
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break;
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case 'put' :
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if ($_FILES) $file = current($_FILES);
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else break;
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$newName = trim($file['name']);
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list(, $newName) = Sabre_DAV_URLUtil::splitPath(trim($file['name']));
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if (isset($_POST['name']) && trim($_POST['name']))
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$newName = trim($_POST['name']);
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// Making sure we only have a 'basename' component
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list(, $newName) = Sabre_DAV_URLUtil::splitPath($newName);
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if (is_uploaded_file($file['tmp_name'])) {
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$parent = $this->server->tree->getNodeForPath(trim($uri,'/'));
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$parent->createFile($newName,fopen($file['tmp_name'],'r'));
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}
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}
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$this->server->httpResponse->setHeader('Location',$this->server->httpRequest->getUri());
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return false;
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}
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/**
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* Escapes a string for html.
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*
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* @param string $value
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* @return void
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*/
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public function escapeHTML($value) {
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return htmlspecialchars($value,ENT_QUOTES,'UTF-8');
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}
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/**
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* Generates the html directory index for a given url
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*
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* @param string $path
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* @return string
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*/
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public function generateDirectoryIndex($path) {
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$html = "<html>
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<head>
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<title>Index for " . $this->escapeHTML($path) . "/ - SabreDAV " . Sabre_DAV_Version::VERSION . "</title>
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<style type=\"text/css\"> body { Font-family: arial}</style>
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</head>
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<body>
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<h1>Index for " . $this->escapeHTML($path) . "/</h1>
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<table>
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<tr><th>Name</th><th>Type</th><th>Size</th><th>Last modified</th></tr>
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<tr><td colspan=\"4\"><hr /></td></tr>";
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$files = $this->server->getPropertiesForPath($path,array(
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'{DAV:}displayname',
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'{DAV:}resourcetype',
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'{DAV:}getcontenttype',
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'{DAV:}getcontentlength',
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'{DAV:}getlastmodified',
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),1);
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foreach($files as $k=>$file) {
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// This is the current directory, we can skip it
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if (rtrim($file['href'],'/')==$path) continue;
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list(, $name) = Sabre_DAV_URLUtil::splitPath($file['href']);
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$type = null;
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if (isset($file[200]['{DAV:}resourcetype'])) {
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$type = $file[200]['{DAV:}resourcetype']->getValue();
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// resourcetype can have multiple values
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if (is_array($type)) {
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$type = implode(', ', $type);
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}
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// Some name mapping is preferred
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switch($type) {
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case '{DAV:}collection' :
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$type = 'Collection';
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break;
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}
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}
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// If no resourcetype was found, we attempt to use
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// the contenttype property
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if (!$type && isset($file[200]['{DAV:}getcontenttype'])) {
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$type = $file[200]['{DAV:}getcontenttype'];
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}
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if (!$type) $type = 'Unknown';
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$size = isset($file[200]['{DAV:}getcontentlength'])?(int)$file[200]['{DAV:}getcontentlength']:'';
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$lastmodified = isset($file[200]['{DAV:}getlastmodified'])?$file[200]['{DAV:}getlastmodified']->getTime()->format(DateTime::ATOM):'';
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$fullPath = Sabre_DAV_URLUtil::encodePath('/' . trim($this->server->getBaseUri() . ($path?$path . '/':'') . $name,'/'));
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$displayName = isset($file[200]['{DAV:}displayname'])?$file[200]['{DAV:}displayname']:$name;
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$name = $this->escapeHTML($name);
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$displayName = $this->escapeHTML($displayName);
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$type = $this->escapeHTML($type);
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$html.= "<tr>
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<td><a href=\"{$fullPath}\">{$displayName}</a></td>
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<td>{$type}</td>
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<td>{$size}</td>
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<td>{$lastmodified}</td>
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</tr>";
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}
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$html.= "<tr><td colspan=\"4\"><hr /></td></tr>";
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if ($this->enablePost) {
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$html.= '<tr><td><form method="post" action="">
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<h3>Create new folder</h3>
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<input type="hidden" name="action" value="mkcol" />
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Name: <input type="text" name="name" /><br />
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<input type="submit" value="create" />
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</form>
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<form method="post" action="" enctype="multipart/form-data">
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<h3>Upload file</h3>
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<input type="hidden" name="action" value="put" />
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Name (optional): <input type="text" name="name" /><br />
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File: <input type="file" name="file" /><br />
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<input type="submit" value="upload" />
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</form>
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</td></tr>';
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}
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$html.= "</table>
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<address>Generated by SabreDAV " . Sabre_DAV_Version::VERSION ."-". Sabre_DAV_Version::STABILITY . " (c)2007-2010 <a href=\"http://code.google.com/p/sabredav/\">http://code.google.com/p/sabredav/</a></address>
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</body>
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</html>";
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return $html;
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}
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}
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