763 lines
25 KiB
PHP
Executable File
763 lines
25 KiB
PHP
Executable File
<?php
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/*
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+----------------------------------------------------------------------+
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| Copyright (c) 2002-2007 Christian Stocker, Hartmut Holzgraefe |
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| All rights reserved |
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| |
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| Redistribution and use in source and binary forms, with or without |
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| modification, are permitted provided that the following conditions |
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| are met: |
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| |
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| 1. Redistributions of source code must retain the above copyright |
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| notice, this list of conditions and the following disclaimer. |
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| 2. Redistributions in binary form must reproduce the above copyright |
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| notice, this list of conditions and the following disclaimer in |
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| the documentation and/or other materials provided with the |
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| distribution. |
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| 3. The names of the authors may not be used to endorse or promote |
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| products derived from this software without specific prior |
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| written permission. |
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| |
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| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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| FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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| COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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| BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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| ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| POSSIBILITY OF SUCH DAMAGE. |
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+----------------------------------------------------------------------+
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*/
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require_once("../inc/lib_base.php");
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oc_require_once("HTTP/WebDAV/Server.php");
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oc_require_once("System.php");
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/**
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* Filesystem access using WebDAV
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*
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* @access public
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* @author Hartmut Holzgraefe <hartmut@php.net>
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* @version @package-version@
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*/
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class HTTP_WebDAV_Server_Filesystem extends HTTP_WebDAV_Server
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{
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/**
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* Root directory for WebDAV access
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*
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* Defaults to webserver document root (set by ServeRequest)
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*
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* @access private
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* @var string
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*/
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var $base = "";
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/**
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* Serve a webdav request
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*
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* @access public
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* @param string
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*/
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function ServeRequest($base = false)
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{
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// special treatment for litmus compliance test
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// reply on its identifier header
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// not needed for the test itself but eases debugging
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if (isset($this->_SERVER['HTTP_X_LITMUS'])) {
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error_log("Litmus test ".$this->_SERVER['HTTP_X_LITMUS']);
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header("X-Litmus-reply: ".$this->_SERVER['HTTP_X_LITMUS']);
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}
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// set root directory, defaults to webserver document root if not set
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if ($base) {
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$this->base = realpath($base); // TODO throw if not a directory
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} else if (!$this->base) {
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$this->base = $this->_SERVER['DOCUMENT_ROOT'];
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}
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// let the base class do all the work
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parent::ServeRequest();
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}
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/**
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* No authentication is needed here
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*
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* @access private
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* @param string HTTP Authentication type (Basic, Digest, ...)
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* @param string Username
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* @param string Password
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* @return bool true on successful authentication
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*/
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function check_auth($type, $user, $pass)
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{
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return true;
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}
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/**
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* PROPFIND method handler
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*
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* @param array general parameter passing array
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* @param array return array for file properties
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* @return bool true on success
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*/
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function PROPFIND(&$options, &$files)
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{
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// get absolute fs path to requested resource
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$fspath = $options["path"];
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// sanity check
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if (!OC_FILESYSTEM::file_exists($fspath)) {
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return false;
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}
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// prepare property array
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$files["files"] = array();
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// store information for the requested path itself
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$files["files"][] = $this->fileinfo($options["path"]);
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// information for contained resources requested?
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if (!empty($options["depth"]) && OC_FILESYSTEM::is_dir($fspath) && OC_FILESYSTEM::is_readable($fspath)) {
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// make sure path ends with '/'
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$options["path"] = $this->_slashify($options["path"]);
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// try to open directory
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$handle = @OC_FILESYSTEM::opendir($fspath);
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if ($handle) {
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// ok, now get all its contents
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while ($filename = readdir($handle)) {
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if ($filename != "." && $filename != "..") {
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$files["files"][] = $this->fileinfo($options["path"].$filename);
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}
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}
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// TODO recursion needed if "Depth: infinite"
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}
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}
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// ok, all done
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return true;
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}
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/**
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* Get properties for a single file/resource
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*
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* @param string resource path
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* @return array resource properties
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*/
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function fileinfo($path)
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{
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// map URI path to filesystem path
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$fspath =$path;
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// create result array
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$info = array();
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// TODO remove slash append code when base clase is able to do it itself
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$info["path"] = OC_FILESYSTEM::is_dir($fspath) ? $this->_slashify($path) : $path;
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$info["props"] = array();
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// no special beautified displayname here ...
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$info["props"][] = $this->mkprop("displayname", strtoupper($path));
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// creation and modification time
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$info["props"][] = $this->mkprop("creationdate", OC_FILESYSTEM::filectime($fspath));
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$info["props"][] = $this->mkprop("getlastmodified", OC_FILESYSTEM::filemtime($fspath));
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// Microsoft extensions: last access time and 'hidden' status
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$info["props"][] = $this->mkprop("lastaccessed", OC_FILESYSTEM::fileatime($fspath));
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$info["props"][] = $this->mkprop("ishidden", ('.' === substr(basename($fspath), 0, 1)));
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// type and size (caller already made sure that path exists)
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if ( OC_FILESYSTEM::is_dir($fspath)) {
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// directory (WebDAV collection)
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$info["props"][] = $this->mkprop("resourcetype", "collection");
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$info["props"][] = $this->mkprop("getcontenttype", "httpd/unix-directory");
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} else {
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// plain file (WebDAV resource)
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$info["props"][] = $this->mkprop("resourcetype", "");
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if ( OC_FILESYSTEM::is_readable($fspath)) {
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$info["props"][] = $this->mkprop("getcontenttype", $this->_mimetype($fspath));
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} else {
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$info["props"][] = $this->mkprop("getcontenttype", "application/x-non-readable");
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}
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$info["props"][] = $this->mkprop("getcontentlength", OC_FILESYSTEM::filesize($fspath));
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}
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// get additional properties from database
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$query = "SELECT ns, name, value FROM properties WHERE path = '$path'";
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$res = OC_DB::select($query);
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while ($row = $res[0]) {
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$info["props"][] = $this->mkprop($row["ns"], $row["name"], $row["value"]);
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}
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return $info;
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}
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/**
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* detect if a given program is found in the search PATH
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*
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* helper function used by _mimetype() to detect if the
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* external 'file' utility is available
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*
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* @param string program name
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* @param string optional search path, defaults to $PATH
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* @return bool true if executable program found in path
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*/
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function _can_execute($name, $path = false)
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{
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// path defaults to PATH from environment if not set
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if ($path === false) {
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$path = getenv("PATH");
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}
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// check method depends on operating system
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if (!strncmp(PHP_OS, "WIN", 3)) {
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// on Windows an appropriate COM or EXE file needs to exist
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$exts = array(".exe", ".com");
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$check_fn = "file_exists";
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} else {
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// anywhere else we look for an executable file of that name
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$exts = array("");
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$check_fn = "is_executable";
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}
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// now check the directories in the path for the program
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foreach (explode(PATH_SEPARATOR, $path) as $dir) {
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// skip invalid path entries
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if (!file_exists($dir)) continue;
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if (!is_dir($dir)) continue;
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// and now look for the file
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foreach ($exts as $ext) {
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if ($check_fn("$dir/$name".$ext)) return true;
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}
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}
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return false;
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}
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/**
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* try to detect the mime type of a file
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*
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* @param string file path
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* @return string guessed mime type
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*/
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function _mimetype($fspath)
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{
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return OC_FILESYSTEM::getMimeType($fspath);
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return $mime_type;
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}
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/**
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* HEAD method handler
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*
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* @param array parameter passing array
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* @return bool true on success
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*/
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function HEAD(&$options)
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{
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// get absolute fs path to requested resource
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$fspath = $options["path"];
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// sanity check
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if (! OC_FILESYSTEM::file_exists($fspath)) return false;
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// detect resource type
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$options['mimetype'] = $this->_mimetype($fspath);
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// detect modification time
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// see rfc2518, section 13.7
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// some clients seem to treat this as a reverse rule
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// requiering a Last-Modified header if the getlastmodified header was set
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$options['mtime'] = OC_FILESYSTEM::filemtime($fspath);
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// detect resource size
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$options['size'] = OC_FILESYSTEM::filesize($fspath);
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return true;
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}
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/**
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* GET method handler
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*
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* @param array parameter passing array
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* @return bool true on success
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*/
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function GET(&$options)
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{
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// get absolute fs path to requested resource)
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$fspath = $options["path"];
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error_log("get $fspath");
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// is this a collection?
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if (OC_FILESYSTEM::is_dir($fspath)) {
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return $this->GetDir($fspath, $options);
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}
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// the header output is the same as for HEAD
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if (!$this->HEAD($options)) {
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return false;
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}
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// no need to check result here, it is handled by the base class
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$options['stream'] = OC_FILESYSTEM::fopen($fspath, "r");
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return true;
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}
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/**
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* GET method handler for directories
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*
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* This is a very simple mod_index lookalike.
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* See RFC 2518, Section 8.4 on GET/HEAD for collections
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*
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* @param string directory path
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* @return void function has to handle HTTP response itself
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*/
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function GetDir($fspath, &$options)
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{
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$path = $this->_slashify($options["path"]);
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if ($path != $options["path"]) {
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header("Location: ".$this->base_uri.$path);
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exit;
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}
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// fixed width directory column format
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$format = "%15s %-19s %-s\n";
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if (!OC_FILESYSTEM::is_readable($fspath)) {
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return false;
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}
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$handle = OC_FILESYSTEM::opendir($fspath);
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if (!$handle) {
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return false;
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}
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echo "<html><head><title>Index of ".htmlspecialchars($options['path'])."</title></head>\n";
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echo "<h1>Index of ".htmlspecialchars($options['path'])."</h1>\n";
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echo "<pre>";
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printf($format, "Size", "Last modified", "Filename");
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echo "<hr>";
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while ($filename = readdir($handle)) {
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if ($filename != "." && $filename != "..") {
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$fullpath = $fspath."/".$filename;
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$name = htmlspecialchars($filename);
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printf($format,
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number_format(filesize($fullpath)),
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strftime("%Y-%m-%d %H:%M:%S", filemtime($fullpath)),
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"<a href='$name'>$name</a>");
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}
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}
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echo "</pre>";
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closedir($handle);
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echo "</html>\n";
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exit;
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}
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/**
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* PUT method handler
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*
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* @param array parameter passing array
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* @return bool true on success
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*/
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function PUT(&$options)
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{
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$fspath = $options["path"];
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$dir = dirname($fspath);
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if (!OC_FILESYSTEM::file_exists($dir) || !OC_FILESYSTEM::is_dir($dir)) {
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return "409 Conflict"; // TODO right status code for both?
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}
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$options["new"] = ! OC_FILESYSTEM::file_exists($fspath);
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if ($options["new"] && !OC_FILESYSTEM::is_writeable($dir)) {
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return "403 Forbidden";
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}
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if (!$options["new"] && !OC_FILESYSTEM::is_writeable($fspath)) {
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return "403 Forbidden";
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}
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if (!$options["new"] && OC_FILESYSTEM::is_dir($fspath)) {
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return "403 Forbidden";
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}
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$fp = OC_FILESYSTEM::fopen($fspath, "w");
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return $fp;
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}
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/**
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* MKCOL method handler
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*
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function MKCOL($options)
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{
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$path = $options["path"];
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$parent = dirname($path);
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$name = basename($path);
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if (!OC_FILESYSTEM::file_exists($parent)) {
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return "409 Conflict";
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}
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if (!OC_FILESYSTEM::is_dir($parent)) {
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return "403 Forbidden";
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}
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if ( OC_FILESYSTEM::file_exists($parent."/".$name) ) {
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return "405 Method not allowed";
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}
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if (!empty($this->_SERVER["CONTENT_LENGTH"])) { // no body parsing yet
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return "415 Unsupported media type";
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}
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$stat = OC_FILESYSTEM::mkdir($parent."/".$name, 0777);
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if (!$stat) {
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return "403 Forbidden";
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}
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return ("201 Created");
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}
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/**
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* DELETE method handler
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*
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function DELETE($options)
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{
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$path =$options["path"];
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if (!OC_FILESYSTEM::file_exists($path)) {
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return "404 Not found";
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}
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if (OC_FILESYSTEM::is_dir($path)) {
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$query = "DELETE FROM properties WHERE path LIKE '".$this->_slashify($options["path"])."%'";
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OC_DB::query($query);
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// System::rm(array("-rf, $path"));
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OC_FILESYSTEM::delTree($path);
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} else {
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OC_FILESYSTEM::unlink($path);
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}
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$query = "DELETE FROM properties WHERE path = '$options[path]'";
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OC_DB::query($query);
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return "204 No Content";
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}
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/**
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* MOVE method handler
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*
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function MOVE($options)
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{
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return $this->COPY($options, true);
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}
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/**
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* COPY method handler
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*
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function COPY($options, $del=false)
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{
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// TODO Property updates still broken (Litmus should detect this?)
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if (!empty($this->_SERVER["CONTENT_LENGTH"])) { // no body parsing yet
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return "415 Unsupported media type";
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}
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// no copying to different WebDAV Servers yet
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if (isset($options["dest_url"])) {
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return "502 bad gateway";
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}
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$source = $options["path"];
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if (!OC_FILESYSTEM::file_exists($source)) {
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return "404 Not found";
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}
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if (OC_FILESYSTEM::is_dir($source)) { // resource is a collection
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switch ($options["depth"]) {
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case "infinity": // valid
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break;
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case "0": // valid for COPY only
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if ($del) { // MOVE?
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return "400 Bad request";
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}
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break;
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case "1": // invalid for both COPY and MOVE
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default:
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return "400 Bad request";
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}
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}
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$dest = $options["dest"];
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$destdir = dirname($dest);
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if (!OC_FILESYSTEM::file_exists($destdir) || !OC_FILESYSTEM::is_dir($destdir)) {
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return "409 Conflict";
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}
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$new = !OC_FILESYSTEM::file_exists($dest);
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$existing_col = false;
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if (!$new) {
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if ($del && OC_FILESYSTEM::is_dir($dest)) {
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if (!$options["overwrite"]) {
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return "412 precondition failed";
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}
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$dest .= basename($source);
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if (OC_FILESYSTEM::file_exists($dest)) {
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$options["dest"] .= basename($source);
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} else {
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$new = true;
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$existing_col = true;
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}
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}
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}
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if (!$new) {
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if ($options["overwrite"]) {
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$stat = $this->DELETE(array("path" => $options["dest"]));
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if (($stat{0} != "2") && (substr($stat, 0, 3) != "404")) {
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return $stat;
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}
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} else {
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return "412 precondition failed";
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}
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}
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if ($del) {
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if (!OC_FILESYSTEM::rename($source, $dest)) {
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return "500 Internal server error";
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}
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$destpath = $this->_unslashify($options["dest"]);
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if (is_dir($source)) {
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$query = "UPDATE properties
|
|
SET path = REPLACE(path, '".$options["path"]."', '".$destpath."')
|
|
WHERE path LIKE '".$this->_slashify($options["path"])."%'";
|
|
OC_DB::query($query);
|
|
}
|
|
|
|
$query = "UPDATE properties
|
|
SET path = '".$destpath."'
|
|
WHERE path = '".$options["path"]."'";
|
|
OC_DB::query($query);
|
|
} else {
|
|
if (OC_FILESYSTEM::is_dir($source)) {
|
|
$files = OC_FILESYSTEM::find($source);
|
|
$files = array_reverse($files);
|
|
} else {
|
|
$files = array($source);
|
|
}
|
|
|
|
if (!is_array($files) || empty($files)) {
|
|
return "500 Internal server error";
|
|
}
|
|
|
|
|
|
foreach ($files as $file) {
|
|
if (OC_FILESYSTEM::is_dir($file)) {
|
|
$file = $this->_slashify($file);
|
|
}
|
|
|
|
$destfile = str_replace($source, $dest, $file);
|
|
|
|
if (OC_FILESYSTEM::is_dir($file)) {
|
|
if (!OC_FILESYSTEM::file_exists($destfile)) {
|
|
if (!OC_FILESYSTEM::is_writeable(dirname($destfile))) {
|
|
return "403 Forbidden";
|
|
}
|
|
if (!OC_FILESYSTEM::mkdir($destfile)) {
|
|
return "409 Conflict";
|
|
}
|
|
} else if (!OC_FILESYSTEM::is_dir($destfile)) {
|
|
return "409 Conflict";
|
|
}
|
|
} else {
|
|
|
|
if (!OC_FILESYSTEM::copy($file, $destfile)) {
|
|
error_log("copy $file to $destfile failed");
|
|
return "409 Conflict";
|
|
}
|
|
}
|
|
}
|
|
|
|
$query = "INSERT INTO properties SELECT * FROM properties WHERE path = '".$options['path']."'";
|
|
}
|
|
|
|
return ($new && !$existing_col) ? "201 Created" : "204 No Content";
|
|
}
|
|
|
|
/**
|
|
* PROPPATCH method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function PROPPATCH(&$options)
|
|
{
|
|
global $prefs, $tab;
|
|
|
|
$msg = "";
|
|
$path = $options["path"];
|
|
$dir = dirname($path)."/";
|
|
$base = basename($path);
|
|
|
|
foreach ($options["props"] as $key => $prop) {
|
|
if ($prop["ns"] == "DAV:") {
|
|
$options["props"][$key]['status'] = "403 Forbidden";
|
|
} else {
|
|
if (isset($prop["val"])) {
|
|
$query = "REPLACE INTO properties SET path = '$options[path]', name = '$prop[name]', ns= '$prop[ns]', value = '$prop[val]'";
|
|
error_log($query);
|
|
} else {
|
|
$query = "DELETE FROM properties WHERE path = '$options[path]' AND name = '$prop[name]' AND ns = '$prop[ns]'";
|
|
}
|
|
OC_DB::query($query);
|
|
}
|
|
}
|
|
|
|
return "";
|
|
}
|
|
|
|
|
|
/**
|
|
* LOCK method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function LOCK(&$options)
|
|
{
|
|
// get absolute fs path to requested resource
|
|
$fspath = $options["path"];
|
|
|
|
// TODO recursive locks on directories not supported yet
|
|
// makes litmus test "32. lock_collection" fail
|
|
if (is_dir($fspath) && !empty($options["depth"])) {
|
|
return "409 Conflict";
|
|
}
|
|
|
|
$options["timeout"] = time()+300; // 5min. hardcoded
|
|
|
|
if (isset($options["update"])) { // Lock Update
|
|
$where = "WHERE path = '$options[path]' AND token = '$options[update]'";
|
|
|
|
$query = "SELECT owner, exclusivelock FROM locks $where";
|
|
$res = OC_DB::query($query);
|
|
$row = OC_DB::fetch_assoc($res);
|
|
OC_DB::free_result($res);
|
|
|
|
if (is_array($row)) {
|
|
$query = "UPDATE `locks` SET `expires` = '$options[timeout]', `modified` = ".time()." $where";
|
|
OC_DB::query($query);
|
|
|
|
$options['owner'] = $row['owner'];
|
|
$options['scope'] = $row["exclusivelock"] ? "exclusive" : "shared";
|
|
$options['type'] = $row["exclusivelock"] ? "write" : "read";
|
|
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$query = "INSERT INTO `locks`
|
|
SET `token` = '$options[locktoken]'
|
|
, `path` = '$options[path]'
|
|
, `created` = ".time()."
|
|
, `modified` = ".time()."
|
|
, `owner` = '$options[owner]'
|
|
, `expires` = '$options[timeout]'
|
|
, `exclusivelock` = " .($options['scope'] === "exclusive" ? "1" : "0")
|
|
;
|
|
OC_DB::query($query);
|
|
|
|
return OC_DB::affected_rows() ? "200 OK" : "409 Conflict";
|
|
}
|
|
|
|
/**
|
|
* UNLOCK method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function UNLOCK(&$options)
|
|
{
|
|
$query = "DELETE FROM locks
|
|
WHERE path = '$options[path]'
|
|
AND token = '$options[token]'";
|
|
OC_DB::query($query);
|
|
|
|
return OC_DB::affected_rows() ? "204 No Content" : "409 Conflict";
|
|
}
|
|
|
|
/**
|
|
* checkLock() helper
|
|
*
|
|
* @param string resource path to check for locks
|
|
* @return bool true on success
|
|
*/
|
|
function checkLock($path)
|
|
{
|
|
$result = false;
|
|
$query = "SELECT *
|
|
FROM locks
|
|
WHERE path = '$path'
|
|
";
|
|
$res = OC_DB::select($query);
|
|
if ($res) {
|
|
$row=$res[0];
|
|
OC_DB::free_result($res);
|
|
|
|
if ($row) {
|
|
$result = array( "type" => "write",
|
|
"scope" => $row["exclusivelock"] ? "exclusive" : "shared",
|
|
"depth" => 0,
|
|
"owner" => $row['owner'],
|
|
"token" => $row['token'],
|
|
"created" => $row['created'],
|
|
"modified" => $row['modified'],
|
|
"expires" => $row['expires']
|
|
);
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* create database tables for property and lock storage
|
|
*
|
|
* @param void
|
|
* @return bool true on success
|
|
*/
|
|
function create_database()
|
|
{
|
|
// TODO
|
|
return false;
|
|
}
|
|
}
|
|
|
|
?>
|