* @version @package-version@
*/
class HTTP_WebDAV_Server_Filesystem extends HTTP_WebDAV_Server
{
/**
* Root directory for WebDAV access
*
* Defaults to webserver document root (set by ServeRequest)
*
* @access private
* @var string
*/
var $base = "";
/**
* Serve a webdav request
*
* @access public
* @param string
*/
function ServeRequest($base = false)
{
// special treatment for litmus compliance test
// reply on its identifier header
// not needed for the test itself but eases debugging
if (isset($this->_SERVER['HTTP_X_LITMUS'])) {
error_log("Litmus test ".$this->_SERVER['HTTP_X_LITMUS']);
header("X-Litmus-reply: ".$this->_SERVER['HTTP_X_LITMUS']);
}
// set root directory, defaults to webserver document root if not set
if ($base) {
$this->base = realpath($base); // TODO throw if not a directory
} else if (!$this->base) {
$this->base = $this->_SERVER['DOCUMENT_ROOT'];
}
// let the base class do all the work
parent::ServeRequest();
}
/**
* No authentication is needed here
*
* @access private
* @param string HTTP Authentication type (Basic, Digest, ...)
* @param string Username
* @param string Password
* @return bool true on successful authentication
*/
function check_auth($type, $user, $pass)
{
return true;
}
/**
* PROPFIND method handler
*
* @param array general parameter passing array
* @param array return array for file properties
* @return bool true on success
*/
function PROPFIND(&$options, &$files)
{
// get absolute fs path to requested resource
$fspath = $options["path"];
// sanity check
if (!file_exists($fspath)) {
return false;
}
// prepare property array
$files["files"] = array();
// store information for the requested path itself
$files["files"][] = $this->fileinfo($options["path"]);
// information for contained resources requested?
if (!empty($options["depth"]) && OC_FILESYSTEM::is_dir($fspath) && OC_FILESYSTEM::is_readable($fspath)) {
// make sure path ends with '/'
$options["path"] = $this->_slashify($options["path"]);
// try to open directory
$handle = @OC_FILESYSTEM::opendir($fspath);
if ($handle) {
// ok, now get all its contents
while ($filename = readdir($handle)) {
if ($filename != "." && $filename != "..") {
$files["files"][] = $this->fileinfo($options["path"].$filename);
}
}
// TODO recursion needed if "Depth: infinite"
}
}
// ok, all done
return true;
}
/**
* Get properties for a single file/resource
*
* @param string resource path
* @return array resource properties
*/
function fileinfo($path)
{
// map URI path to filesystem path
$fspath =$path;
// create result array
$info = array();
// TODO remove slash append code when base clase is able to do it itself
$info["path"] = OC_FILESYSTEM::is_dir($fspath) ? $this->_slashify($path) : $path;
$info["props"] = array();
// no special beautified displayname here ...
$info["props"][] = $this->mkprop("displayname", strtoupper($path));
// creation and modification time
$info["props"][] = $this->mkprop("creationdate", OC_FILESYSTEM::filectime($fspath));
$info["props"][] = $this->mkprop("getlastmodified", OC_FILESYSTEM::filemtime($fspath));
// Microsoft extensions: last access time and 'hidden' status
$info["props"][] = $this->mkprop("lastaccessed", OC_FILESYSTEM::fileatime($fspath));
$info["props"][] = $this->mkprop("ishidden", ('.' === substr(basename($fspath), 0, 1)));
// type and size (caller already made sure that path exists)
if ( OC_FILESYSTEM::is_dir($fspath)) {
// directory (WebDAV collection)
$info["props"][] = $this->mkprop("resourcetype", "collection");
$info["props"][] = $this->mkprop("getcontenttype", "httpd/unix-directory");
} else {
// plain file (WebDAV resource)
$info["props"][] = $this->mkprop("resourcetype", "");
if ( OC_FILESYSTEM::is_readable($fspath)) {
$info["props"][] = $this->mkprop("getcontenttype", $this->_mimetype($fspath));
} else {
$info["props"][] = $this->mkprop("getcontenttype", "application/x-non-readable");
}
$info["props"][] = $this->mkprop("getcontentlength", OC_FILESYSTEM::filesize($fspath));
}
// get additional properties from database
$query = "SELECT ns, name, value FROM properties WHERE path = '$path'";
$res = OC_DB::query($query);
while ($row = OC_DB::fetch_assoc($res)) {
$info["props"][] = $this->mkprop($row["ns"], $row["name"], $row["value"]);
}
OC_DB::free_result($res);
return $info;
}
/**
* detect if a given program is found in the search PATH
*
* helper function used by _mimetype() to detect if the
* external 'file' utility is available
*
* @param string program name
* @param string optional search path, defaults to $PATH
* @return bool true if executable program found in path
*/
function _can_execute($name, $path = false)
{
// path defaults to PATH from environment if not set
if ($path === false) {
$path = getenv("PATH");
}
// check method depends on operating system
if (!strncmp(PHP_OS, "WIN", 3)) {
// on Windows an appropriate COM or EXE file needs to exist
$exts = array(".exe", ".com");
$check_fn = "file_exists";
} else {
// anywhere else we look for an executable file of that name
$exts = array("");
$check_fn = "is_executable";
}
// now check the directories in the path for the program
foreach (explode(PATH_SEPARATOR, $path) as $dir) {
// skip invalid path entries
if (!file_exists($dir)) continue;
if (!is_dir($dir)) continue;
// and now look for the file
foreach ($exts as $ext) {
if ($check_fn("$dir/$name".$ext)) return true;
}
}
return false;
}
/**
* try to detect the mime type of a file
*
* @param string file path
* @return string guessed mime type
*/
function _mimetype($fspath)
{
return OC_FILESYSTEM::getMimeType($fspath);
return $mime_type;
}
/**
* HEAD method handler
*
* @param array parameter passing array
* @return bool true on success
*/
function HEAD(&$options)
{
// get absolute fs path to requested resource
$fspath = $options["path"];
// sanity check
if (! OC_FILESYSTEM::file_exists($fspath)) return false;
// detect resource type
$options['mimetype'] = $this->_mimetype($fspath);
// detect modification time
// see rfc2518, section 13.7
// some clients seem to treat this as a reverse rule
// requiering a Last-Modified header if the getlastmodified header was set
$options['mtime'] = OC_FILESYSTEM::filemtime($fspath);
// detect resource size
$options['size'] = OC_FILESYSTEM::filesize($fspath);
return true;
}
/**
* GET method handler
*
* @param array parameter passing array
* @return bool true on success
*/
function GET(&$options)
{
// get absolute fs path to requested resource)
$fspath = $options["path"];
error_log("get '$fspath'");
// is this a collection?
if (OC_FILESYSTEM::is_dir($fspath)) {
return $this->GetDir($fspath, $options);
}
// the header output is the same as for HEAD
if (!$this->HEAD($options)) {
return false;
}
// no need to check result here, it is handled by the base class
$options['stream'] = OC_FILESYSTEM::fopen($fspath, "r");
return true;
}
/**
* GET method handler for directories
*
* This is a very simple mod_index lookalike.
* See RFC 2518, Section 8.4 on GET/HEAD for collections
*
* @param string directory path
* @return void function has to handle HTTP response itself
*/
function GetDir($fspath, &$options)
{
$path = $this->_slashify($options["path"]);
if ($path != $options["path"]) {
header("Location: ".$this->base_uri.$path);
exit;
}
// fixed width directory column format
$format = "%15s %-19s %-s\n";
if (!OC_FILESYSTEM::is_readable($fspath)) {
return false;
}
$handle = OC_FILESYSTEM::opendir($fspath);
if (!$handle) {
return false;
}
echo "Index of ".htmlspecialchars($options['path'])."\n";
echo "Index of ".htmlspecialchars($options['path'])."
\n";
echo "";
printf($format, "Size", "Last modified", "Filename");
echo "
";
while ($filename = readdir($handle)) {
if ($filename != "." && $filename != "..") {
$fullpath = $fspath."/".$filename;
$name = htmlspecialchars($filename);
printf($format,
number_format(filesize($fullpath)),
strftime("%Y-%m-%d %H:%M:%S", filemtime($fullpath)),
"$name");
}
}
echo "";
closedir($handle);
echo "\n";
exit;
}
/**
* PUT method handler
*
* @param array parameter passing array
* @return bool true on success
*/
function PUT(&$options)
{
$fspath = $options["path"];
$dir = dirname($fspath);
if (!OC_FILESYSTEM::file_exists($dir) || !OC_FILESYSTEM::is_dir($dir)) {
return "409 Conflict"; // TODO right status code for both?
}
$options["new"] = ! OC_FILESYSTEM::file_exists($fspath);
if ($options["new"] && !OC_FILESYSTEM::is_writeable($dir)) {
return "403 Forbidden";
}
if (!$options["new"] && !OC_FILESYSTEM::is_writeable($fspath)) {
return "403 Forbidden";
}
if (!$options["new"] && OC_FILESYSTEM::is_dir($fspath)) {
return "403 Forbidden";
}
$fp = OC_FILESYSTEM::fopen($fspath, "w");
return $fp;
}
/**
* MKCOL method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function MKCOL($options)
{
$path = $options["path"];
$parent = dirname($path);
$name = basename($path);
if (!OC_FILESYSTEM::file_exists($parent)) {
return "409 Conflict";
}
if (!OC_FILESYSTEM::is_dir($parent)) {
return "403 Forbidden";
}
if ( OC_FILESYSTEM::file_exists($parent."/".$name) ) {
return "405 Method not allowed";
}
if (!empty($this->_SERVER["CONTENT_LENGTH"])) { // no body parsing yet
return "415 Unsupported media type";
}
$stat = OC_FILESYSTEM::mkdir($parent."/".$name, 0777);
if (!$stat) {
return "403 Forbidden";
}
return ("201 Created");
}
/**
* DELETE method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function DELETE($options)
{
$path =$options["path"];
if (!OC_FILESYSTEM::file_exists($path)) {
return "404 Not found";
}
if (OC_FILESYSTEM::is_dir($path)) {
$query = "DELETE FROM properties WHERE path LIKE '".$this->_slashify($options["path"])."%'";
OC_DB::query($query);
// System::rm(array("-rf, $path"));
error_log('delTree');
OC_FILESYSTEM::delTree($path);
} else {
OC_FILESYSTEM::unlink($path);
}
$query = "DELETE FROM properties WHERE path = '$options[path]'";
OC_DB::query($query);
return "204 No Content";
}
/**
* MOVE method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function MOVE($options)
{
return $this->COPY($options, true);
}
/**
* COPY method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function COPY($options, $del=false)
{
// TODO Property updates still broken (Litmus should detect this?)
if (!empty($this->_SERVER["CONTENT_LENGTH"])) { // no body parsing yet
return "415 Unsupported media type";
}
// no copying to different WebDAV Servers yet
if (isset($options["dest_url"])) {
return "502 bad gateway";
}
$source = $options["path"];
if (!OC_FILESYSTEM::file_exists($source)) {
return "404 Not found";
}
if (OC_FILESYSTEM::is_dir($source)) { // resource is a collection
switch ($options["depth"]) {
case "infinity": // valid
break;
case "0": // valid for COPY only
if ($del) { // MOVE?
return "400 Bad request";
}
break;
case "1": // invalid for both COPY and MOVE
default:
return "400 Bad request";
}
}
$dest = $options["dest"];
$destdir = dirname($dest);
if (!OC_FILESYSTEM::file_exists($destdir) || !OC_FILESYSTEM::is_dir($destdir)) {
return "409 Conflict";
}
$new = !OC_FILESYSTEM::file_exists($dest);
$existing_col = false;
if (!$new) {
if ($del && OC_FILESYSTEM::is_dir($dest)) {
if (!$options["overwrite"]) {
return "412 precondition failed";
}
$dest .= basename($source);
if (OC_FILESYSTEM::file_exists($dest)) {
$options["dest"] .= basename($source);
} else {
$new = true;
$existing_col = true;
}
}
}
if (!$new) {
if ($options["overwrite"]) {
$stat = $this->DELETE(array("path" => $options["dest"]));
if (($stat{0} != "2") && (substr($stat, 0, 3) != "404")) {
return $stat;
}
} else {
return "412 precondition failed";
}
}
if ($del) {
if (!OC_FILESYSTEM::rename($source, $dest)) {
return "500 Internal server error";
}
$destpath = $this->_unslashify($options["dest"]);
if (is_dir($source)) {
$query = "UPDATE properties
SET path = REPLACE(path, '".$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)) {
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;
}
}
?>