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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;
+
+ $node = $this->server->tree->getNodeForPath($uri);
+ if ($node instanceof Sabre_DAV_IFile) return true;
+
+ $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;
+ if (isset($_POST['action'])) switch($_POST['action']) {
+
+ 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);
+
+
+ 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']);
+
+ $type = null;
+
+ if (isset($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>";
+
+ }
+
+ $html.= "<tr><td colspan=\"4\"><hr /></td></tr>";
+
+ if ($this->enablePost) {
+ $html.= '<tr><td><form method="post" action="">
+ <h3>Create new folder</h3>
+ <input type="hidden" name="action" value="mkcol" />
+ 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>
+ <input type="hidden" name="action" value="put" />
+ 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;
+
+ }
+
+}